JP5004684B2 - Top drying nozzle in car wash machines - Google Patents

Description

  The present invention relates to an upper surface drying nozzle that is mounted on a car wash machine that moves a main body frame relative to an automobile to wash a car body, and mainly removes water droplets after washing by blowing high-pressure air onto the upper surface of the car body. In particular, the present invention relates to an upper surface drying nozzle in a car wash machine that realizes reduction of noise generated due to air blowing and considers the surrounding environment in which the car wash machine is installed.

  Noise generated from a car wash machine has an adverse effect on the living environment in the surrounding area where the car wash machine is installed. On the other hand, the owner of a car wash machine usually wants to secure profits by opening a car wash area around a densely populated residential area that can attract customers, and operating for a long time with a small number of people. The result is conducive to the seriousness.

  The noise generated from the car wash machine includes announcement sound, impact sound during brush cleaning, injection sound during spray injection, blowing sound during body drying, etc. It is a factor. The causes of noise generated when the car body is dry include driving sound of the blower, vibration sound when blowing from the blower to the blowing nozzle, blowing sound from the blowing nozzle, etc., and some countermeasures have been taken so far I came. (For example, Patent Documents 1 and 2)

  Under such circumstances, the present applicant paid attention to the noise generated by the upper surface drying nozzle. Conventionally known top drying nozzles are configured as shown in FIGS. That is, the upper surface drying nozzle 50 is formed with air blowing cylinders 52, 52 connected to duct hoses 51, 51 communicating with the blower on the upper surface portion, and is a slit-shaped air blowing outlet opened in the longitudinal direction on the lower surface portion. 53 is formed. The inside of the nozzle is a cavity, and a reinforcing body 54 is provided at the blower outlet 53 and is reinforced so as not to be deformed.

It has been found that the upper surface drying nozzle 50 having such a shape generates noise due to the following factors.
First, as shown in FIG. 9, when high-pressure air is introduced into the nozzle from the air blowing cylinders 52, 52, turbulent flow is generated inside the nozzle due to a rapid expansion of the cross-sectional area of the air passage, and mutual airflow interferes. The first noise was generated. Next, in the reinforcing body 54 provided in the blower outlet 53 in order to prevent the deformation of the nozzle, the upper part of the reinforcing body 54 from which the airflow from the blower introduction cylinders 52 and 52 is separated, and after the separation, it hangs down along the reinforcing body 54. The second noise was generated at the lower part of the reinforcing body 54 where the airflow merges.

In addition, as shown in FIG. 10, when the high-pressure air blows out, the slit-like air blowing outlet 53 generates an air flow that takes in ambient ambient air having a low pressure by the diffuser effect. The third noise was generated by the vibration. Further, the drive sound of the blower is propagated through the duct hoses 51 and 51 inside the nozzle, and the fourth noise is generated by the irregular reflection and reflection on the inner surface of the nozzle.
Japanese Utility Model Sho 62-52066 Japanese Utility Model Sho 62-117158

  The problem to be solved by the present invention is to provide an upper surface drying nozzle in a car wash machine that reduces or eliminates the generation of each noise described above.

  In order to solve such a problem, the upper surface drying nozzle of the present invention opens a blower introduction cylinder into which high-pressure air from a blower is introduced on the upper surface, forms a slit-like blower outlet on the lower surface, and has an inside. A diffuser for diffusing a part of the high-pressure air introduced from the air introduction cylinder in the longitudinal direction in the nozzle is formed.

  The upper surface drying nozzle of the present invention includes a current plate extending from the upper surface to the lower surface along the shape of the inner surface at a position that bisects the air introduction tube in the nozzle in the width direction of the nozzle. A notch is formed at the lower end facing the outlet.

  Moreover, the upper surface drying nozzle of this invention is provided with the winding prevention body which formed the folding | returning part upwards over the width direction of a nozzle in the front-and-back end part of a ventilation blower outlet.

  Moreover, the upper surface drying nozzle of this invention attaches a sound-absorbing material to the nozzle upper surface part except a ventilation introduction cylinder.

  According to the first aspect of the present invention, since the diffuser that deflects a part of the high-pressure air introduced into the nozzle from the air introduction cylinder is provided in the width direction of the nozzle, the occurrence of turbulent flow in the nozzle is suppressed. First noise generated by mutual interference between turbulent flows can be reduced. At the same time, the distribution of the high-pressure air blown from the blower outlet of the nozzle becomes uniform, and the blower performance is improved.

  According to the invention of claim 2, since the rectifying plate is attached from the upper surface to the lower surface along the inner surface of the nozzle and the notch is formed at the lower end facing the blower outlet, the air flow by the rectifying plate that also serves as reinforcement of the nozzle The separation point and the merging point can be set inside the nozzle from the blower outlet, and the second noise can be hardly transmitted to the outside.

  According to the invention of claim 3, since the entrainment prevention body having the folded portion formed at the front and rear ends of the blower outlet is provided, the generation of the airflow sucked from the outer periphery of the blower outlet nozzle by the diffuser effect is prevented, and the airflow is generated. The accompanying third noise can be eliminated.

  According to the invention of claim 4, it is possible to prevent the drive sound of the blower propagating into the nozzle through the duct hose from being irregularly reflected in the nozzle, and to reduce the fourth noise due to reverberation.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a car wash machine.
Reference numeral 1 denotes a main body frame which is formed in a gate shape and reciprocates on the rails 2 and 2 so as to straddle the automobile A. The main body frame 1 has a top brush device 3 for brushing the upper surface of the vehicle body, a pair of left and right side brush devices 4 and 4 for brushing the front and rear surfaces and the side surfaces of the vehicle body, and high-pressure air as the car wash treatment device. The main body frame is provided with a top surface drying nozzle 6 for drying, a pair of left and right side surface drying nozzles 7 and 7 for spraying high pressure air on the side of the vehicle body, and a watering nozzle (not shown). Along with the traveling of 1, a cleaning operation of brushing by spraying water, detergent, wax or the like and a drying operation of blowing high-pressure air from a drying nozzle are performed.

FIG. 2 shows the configuration of the drying apparatus.
A blower 8 supplies high-pressure air to the upper surface drying nozzle 6. The blower 8 is housed in a state in which a rubber leg for vibration isolation is attached in a casing 9 formed of a metal plate, and sucks air from an air inlet 10 opened on the upper surface of the casing 9 and opens on one side of the casing 9. High-pressure air is blown out from the air outlet 11. If necessary, a sound absorbing material may be attached to the inner surface of the casing 9 to improve sound insulation.

  A box-shaped intake cover 12 that prevents the drive sound of the blower 8 from leaking linearly to the outside is attached to the intake port 10. A sound absorbing material 14 is attached to the inner surface of the cover 12 facing the air inlet 10 of the casing 9, and an air inlet 13 communicating with the air inlet 10 of the casing is formed on one side of the cover 12. The intake passage formed by the intake port 10 and the intake port 13 also functions as an exhaust heat passage that promotes exhaust heat of the blower 8 when the blower 8 is stopped.

  A flexible duct hose 15 is connected to the air outlet 11. The duct hose 15 is connected to the upper surface drying nozzle 6 and the side surface drying nozzles 7 and 7 and is supplied with high-pressure air generated by the blower 8. Incidentally, the sound absorbing material is constituted by a single metal alloy or a combination thereof according to a portion using a known metal fiber sintered sound absorbing material, glass wool, punching metal or the like.

3 to 5 show the configuration of the upper surface drying nozzle 6, FIG. 3 is a front sectional view, FIG. 4 is a partially enlarged view of the front sectional view, and FIG. 5 is a side sectional view.
The upper surface drying nozzle 6 is formed with air blowing cylinders 16 and 16 to which duct hoses 15 and 15 are connected on the upper surface, and an air blowing outlet 17 is formed on the lower surface over the nozzle width. The overall view of the nozzle is formed by integrally forming a body portion 6a having a substantially inverted triangular shape on the side surface and an air passage 6b that hangs linearly on the lower end portion of the body portion 6a, and introducing air into the upper surface of the body portion 6a. It is the structure which provided the ventilation blower outlet 17 in the lower end of the pipe | tubes 16 and 16 and the ventilation duct 6b.

  Reference numeral 18 denotes a blower diffuser, which is provided on the inner edge of the opening of the blower introduction cylinder 16 in the nozzle body 6a with the blower introduction cylinder 16 sandwiched in the width direction. The blower diffusing body 18 has a substantially lower semicircular cross section, and its circular arc surface is arranged in a posture that is partially continuous with the inner surface of the blower introduction cylinder 16, and is one of the high-pressure air introduced from the blower introduction cylinder 16 into the nozzle. By deflecting the portion in the width direction of the nozzle, the generation of turbulent flow in the nozzle is suppressed, and noise generated by mutual interference of turbulent flows is reduced.

  A current plate 19 is attached from the upper surface to the lower surface along the inner surface of the nozzle body 6a so as to divide the inside of the nozzle in the width direction. Here, the air blowing cylinders 16, 16 are arranged in the width direction. It is provided at a total of three locations, a position for dividing into two and a center position of the nozzle. The rectifying plate 19 extends its upper end to the upper surface in the nozzle body 6a, so that noise generated when the high-pressure air introduced from the blast introducing tube 16 is separated by the rectifying plate 19 is blown. It has a role to keep away from the outlet 17 and a reinforcing plate for the nozzle itself. The rectifying plate 19 has a notch 20 having a width substantially the same as that of the blower outlet 17 inside the nozzle from the blower outlet 17. The notch 20 has a function of setting a portion where the airflow straight traveling across the rectifying plate 19 is joined to the inside of the nozzle from the blower outlet 17 to make it difficult to transmit the noise generated by the turbulent flow generated during the joining to the outside. have.

  21 is an entrainment prevention body and is formed in the front-and-rear end of the ventilation blower outlet 17 in the ventilation duct 6b. The entanglement preventing body 21 extends horizontally from the front surface and the rear surface of the air duct 6b to the front and rear, and further forms a folded portion whose front end is bent vertically toward the outer surface of the nozzle body 6a. When high-pressure air is blown out from the nozzle, it prevents the generation of airflow sucked from the outer periphery of the nozzle by the diffuser effect and eliminates the noise accompanying the airflow generation.

  A sound absorbing chamber 22 is formed on the upper surface of the nozzle excluding the air blowing cylinders 16 and 16. The sound absorbing chamber 22 has a sound absorbing material attached therein, and prevents the drive sound of the blower 8 propagating into the nozzle through the duct hoses 15 and 15 from being diffusely reflected in the nozzle, and reducing noise due to reverberation. have. In addition, the vibration sound of the nozzle itself due to air blowing is also absorbed.

6 and 7 show the configuration of the side drying nozzle 7.
The side drying nozzle 7 is configured by vertically arranging cylindrical nozzle bodies 7a and 7b having duct hoses 23 and 23 connected to the rear ends. The nozzle bodies 7a and 7b blow out the high-pressure air supplied from the blower 24 through the duct hoses 23 and 23, and reduce the air path resistance and blow out the blown air from the blower 24 efficiently compared to the conventional slit type nozzle. The feature is that it can. The blower 24 is the same as the blower 8 for drying the top surface shown in FIG. 2, and is housed in a state in which a rubber leg for vibration isolation is attached in a casing 9 formed of a metal plate. High-pressure wind is blown out from. A branch body 25 that branches the air passage is connected to the air outlet, and duct hoses 23 and 23 are connected to the branch body 25 to distribute air to the nozzle bodies 7a and 7b.

  The nozzle bodies 7a and 7b are attached in a state where the upper nozzle body 7a is inclined toward the traveling direction of the main body frame 1 and the lower nozzle body 7b is inclined toward the direction opposite to the traveling direction of the main body frame 1, Each blows toward the diagonally forward and diagonally rear side of the vehicle body. Further, the nozzle bodies 7a and 7b are fitted with a rectifying cylinder 28 for forming a tapered and inclined air passage from the air blowing inlet 26 to which the duct hoses 23 and 23 are connected to the air blowing outlet 27. This rectification cylinder 28 rectifies the high-pressure air from the blower 24 for drying the side surface and blows it out in a state where the wind force is increased, thereby reducing the noise generated by the turbulent flow and improving the air blowing performance accompanying the uniform air blowing. Have a role to plan. Instead of the rectifying cylinder 28, the nozzle bodies 7a and 7b can be formed in a tapered shape, and are not particularly limited.

About the Example comprised in this way, operation | movement and an effect | action at the time of drying are demonstrated.
When the washing process in the car washing operation is completed, the blowers 8 and 24 are activated and the drying process is started. Since the blowers 8 and 24 are accommodated in a casing 9 formed of a metal plate with rubber vibration-proof rubber legs attached, noise generated when the blower is started is reduced compared to conventional devices. ing. A cover 12 provided with a sound absorbing material 14 on the inner surface is attached to the intake port of the casing 9 in a state in which an intake passage is secured, and the noise of the blower 8 that leaks linearly from the intake port 10 of the casing 9 is absorbed. The

  Now, the high-pressure air supplied to the upper surface drying nozzle 6 through the duct hoses 15 and 15 is introduced into the nozzle from the blower introduction cylinder 16 as a straight airflow in the hanging direction. At this time, the wind passing through the inner surface side of the air blowing cylinder 16 is bent by the air diffuser 18 formed on the inner edge of the opening of the air blowing cylinder 16 and spreads as a diffused air current in the width direction in the nozzle. Further, the wind passing through the center side of the blower introduction cylinder 16 hangs down along the rectifying plate 19 while maintaining straightness. Thereby, generation | occurrence | production of the turbulent flow within a nozzle is suppressed, and the noise accompanying interference of this turbulent flow is reduced.

  Further, it occurs when the entrained airflow generated when the wind passing through the center side of the air introduction tube 16 is separated by the rectifying plate 19 and the straight airflow hanging along the rectifying plate 19 merge at the notch portion 20. Since the noise generated with the entrained airflow is generated inside the nozzle from the blower outlet 17 of the nozzle, the noise is hardly transmitted to the outside.

  Thus, the air blown from the blower outlet 17 is blown out almost uniformly by the blower diffuser 18 and the current plate 19 over the entire width. At this time, the entanglement preventing bodies 21 provided at the front and rear ends of the blower outlet 17 prevent the outside air around the blower outlet 17 from being caught, and noise caused by the entangled airflow is prevented.

  On the other hand, since the air blower 8 and the nozzle 6 are in communication with each other through the air blowing path described above, the drive sound of the air blower 8 is propagated into the nozzle through the duct hoses 15 and 15. This noise is reflected on the inner surface of the nozzle and causes the nozzle to vibrate to some extent, but is finally absorbed by the sound absorbing chamber 22 on the upper surface of the nozzle, and reverberation in the nozzle is minimized.

  In the upper surface drying nozzle configured as described above, the noise generation factor is eliminated and the noise reduction is realized. Such a configuration can also be diverted to a conventional side drying nozzle having a slit-shaped air blowing port.

  High-pressure air supplied to the side drying nozzles 7 and 7 through the duct hoses 23 and 23 is introduced from the air blowing inlet 26 of the nozzle bodies 7 a and 7 b and blown out from the air blowing outlet 27. At this time, since the air is rectified toward the blower outlet 27 by the tapered inclined air passage formed by the rectifying cylinder 28 in the nozzle bodies 7a and 7b, the noise accompanying the interference of the turbulent flow is reduced, and the air is blown out efficiently. Will be.

  The side drying nozzle configured as described above eliminates the cause of noise generation and achieves low noise. Such a configuration can also be used for a top drying nozzle.

It is a top view of the car wash machine equipped with an upper surface drying nozzle. It is explanatory drawing of the drying apparatus connected with an upper surface drying nozzle. It is front sectional drawing of an upper surface drying nozzle. It is a partial enlarged view in front sectional drawing of an upper surface drying nozzle. It is side surface sectional drawing of an upper surface drying nozzle. It is explanatory drawing of the drying apparatus connected to a side surface drying nozzle. It is front sectional drawing of a side surface drying nozzle. It is front sectional drawing of the conventional upper surface drying nozzle. It is a partial enlarged view in front sectional drawing of the conventional upper surface drying nozzle. It is side surface sectional drawing of the conventional upper surface drying nozzle.

Explanation of symbols

6 Top Drying Nozzle 8 Blower 15 Duct Hose 16 Blower Introducing Tube 17 Blower Outlet 18 Diffuser 19 Rectifying Plate 20 Notch 21 Entrainment Preventer 22 Sound Absorption Chamber

Claims (4)

A car wash machine for washing a car body with a car wash treatment device as the main body frame equipped with the car wash treatment device is moved relative to the car,
In the car wash machine having an upper surface drying nozzle that blows high-pressure air mainly on the upper surface of the automobile as the car wash treatment device,
The upper surface drying nozzle opens a blower introduction cylinder into which high-pressure air from a blower is introduced on the upper surface, forms a slit-like blower outlet on the lower surface, and is one of the high-pressure air introduced from the blower introduction cylinder inside. The upper surface drying nozzle in the car wash machine characterized by forming the diffuser which diffuses a part in the longitudinal direction in a nozzle.
The upper surface drying nozzle includes a current plate extending from the upper surface to the lower surface along the shape of the inner surface so as to bisect the air blowing cylinder in the width direction of the nozzle, and is opposed to the air blowing outlet in the current plate. The upper surface drying nozzle in the car wash machine according to claim 1 , wherein a notch portion is formed at a lower end portion.
The said upper surface drying nozzle was equipped with the curling prevention body which formed the folding | returning part to the upper direction over the width direction of the nozzle in the front-and-back end part of the said ventilation blower outlet, The said claim 1 or 2 characterized by the above-mentioned. Top-side drying nozzle in car wash machines.
The upper surface drying nozzle of the car wash machine according to any one of claims 1 to 3 , wherein the upper surface drying nozzle has a sound absorbing material attached to an upper surface portion excluding the blower introduction cylinder.

Images