Patent Publication Number: US-2023158521-A1

Title: Spray head structure

Description:
TECHNICAL FIELD 
     The present application relates to a spray head structure, particularly to a spray head structure provided with a load member and a fan component. 
     BACKGROUND ART 
     With the improvement of the quality of life including clothing, food, housing, transportation and entertainment, the means of transportation have also been upgraded from bicycles and motorcycles to sedans and SUVs. The cars running on the road will inevitably be contaminated with sand and dust. Therefore, after the cars have run for a period of time, they must be cleaned, For this reason, many car owners will have their cars washed in car washing stations during holidays. The cleaning worker soaks foam with detergent, nibs the car body with the foam and then flushes away the detergent froth with jet water. However, during the cleaning process of the car body, often the pressure of the jet water is not high enough to remove the dirt on the car body, leaving marks of dirt and sand after the car is washed. 
     Therefore, some people have developed an air spray gun, which uses high-pressure air to improve the cleaning effect of the air spray gun. The air spray gun uses a T-shaped tube to connect a lever, a. liquid drum and a nozzle respectively, and the bottom of the lever is connected to a tube, which is connected to an air compressor. The lever controls the high pressure air of the air compressor to enter the T-shaped tube to produce a Venturi effect so as to draw out the liquid in the liquid drum and then spray the liquid out via a nozzle. 
     However, the air spray gun only has a small spray area. Therefore, if the cleaning worker wants to use the air spray gun to quickly clean a large area, it is liable for the cleaning worker to skip part of the cleaning area due to rapid sweep, thereby causing unclean locations, In order to achieve a good cleaning effect, the cleaning worker has to spend a lot of time repeatedly cleaning the same area. Therefore, how to improve the overall cleaning. ability of the air spray gun has become an issue that designers need to solve at present. 
     SUMMARY OF THE INVENTION 
     An embodiment of the present application provides a spray head structure to solve the problem of an insufficient cleaning ability of the air spray gun in the prior art. 
     A spray head structure disclosed by an embodiment of the present application is for spraying a gas at a high flow rate and a liquid and comprises an airflow pipe, a rotary member, a load member, a fan component, a spoiler pipe and a liquid flow pipe. The airflow pipe is provided with an airflow channel for circulation of the gas at a high flow rate. The rotary member is rotatably sleeved on the airflow pipe. The load member is mounted at the rotary member to increase the load of the rotary member so as to improve the torsion of the rotary member. The fan component is mounted at the rotary member. The spoiler pipe is fixedly arranged on the rotary member, provided with a spoiler channel and connected to the airflow pipe. The airflow channel is in communication with the spoiler channel. The spoiler channel is provided with an outlet end, and an injection path at the outlet end. The injection path forms an acute angle with the axis of the airflow pipe. The liquid flow pipe is provided with a liquid inlet end and a liquid outlet end opposite to each other. The liquid inlet end is located outside the airflow pipe, and the liquid outlet end passes through the airflow pipe to the airflow channel, extends from the airflow channel to the outlet end of the spoiler channel, and allows a liquid to be sprayed out from the liquid outlet end and mixed and atomized with a gas at a high flow rate. Here, the gas at a high flow rate is sprayed from the airflow channel toward the outlet end, so that the outlet end of the spoiler pipe rotates relative to the axis due to eccentric force. When the rotary member rotates, it will drive the fan component to rotate and form an airflow. The outlet end is located in the flow path of the airflow. 
     According to the spray bead. structure disclosed in the above embodiment, since the fan component and the load member are jointly mounted on the rotary member, when a gas at a high flow rate flows through the spoiler pipe, it will drive the fan component and the load member to rotate. Here, the rotating fan component will generate an airflow, which flows from the fan component toward the outlet end to improve the atomization effect of the liquid and the gas at a high flow rate, or flows from the outlet end toward the fan component to perform the suction of impurities adjacent to the outlet end. Further, the load member increases the load of the rotary member, so as to improve the torsion of the rotary member. In this way, under the settings of the fan component and the load member, the overall cleaning ability of the spray head structure can be further improved. 
     The above description of the content of the present application and the following description of implementation manners are used to demonstrate and explain the spirit and principle of the present application, and provide a further explanation on the protection scope of the claims of the present application 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings described here are used to provide further understanding on the present application and form part of the present application. The schematic embodiments of the present application and description thereof are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings: 
         FIG.  1    is an exploded sectional view of a spray head structure disclosed by a first: embodiment of the present application. 
         FIG.  2    is a schematic view of operation of  FIG.  1   ; 
         FIG.  3    is a schematic view of operation of a spray head structure disclosed by a second embodiment of the present application. 
         FIG.  4    is a schematic view of operation of a spray head structure disclosed by a third embodiment of the present application, 
     
    
    
     DETAILED DESCRIPTION 
     In order to make the object, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely hereinafter in conjunction with the specific embodiments and corresponding drawings of the present application. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts all fall within the protection scope of the present application. 
     The technical solutions provided by the embodiments of the present application will be described in detail in conjunction with the accompanying drawings. 
     Please refer to  FIG.  1    and  FIG.  2   .  FIG.  1    is an exploded sectional view of a spray head structure disclosed by a first embodiment of the present application.  FIG.  2    is a schematic view of operation of  FIG.  1   . 
     The spray head structure  1  provided by this embodiment is for spraying and atomizing a gas at a high flow rate and a liquid. Further, the spray head structure  1  for example can be used in a cleaning spray gun for cleaning car bodies. The spray head structure  1  comprises an airflow pipe  10 , a gas compressor  20 , a rotary member  30 , a spoiler pipe  40 , a liquid flow pipe  50 , a liquid storage tank  60  and a load member  70 . 
     The airflow pipe  10  is provided with a through airflow channel  11 . The two opposite ends of the airflow pipe  10  are provided with a gas inlet end  12  and a gas outlet end  13  respectively. The gas inlet end  12  is connected to a gas compressor  20 . The ins compressor  20  is used to provide a gas at a high flow rate. 
     The rotary member  30  is rotatably sleeved on the airflow pipe  10 . In more detail, the rotary member  30  is provided with a first end  31  and a second end  32  opposite to each other, and a through channel  33  that extends from the first end  31  to the second end  32 . The first end  31  is rotatably sleeved on the airflow pipe  10 , so that part of the airflow pipe  10  is located inside the through channel  33 . 
     The spoiler pipe  40  is fixedly arranged on the rotary member  30  and is provided with a spoiler channel  41 . Part of the spoiler pipe  40  is connected to the airflow pipe  10  so that the airflow channel  11  is in communication with the spoiler channel  41 . In detail, the spoiler channel  41  is provided with an outlet end  411  and a combined end  412  opposite to each other The spoiler channel  41  is in communication with the airflow channel  11  as the combined end  412  is connected to the gas outlet end  13 . The gas at a high flow rate provided by the gas compressor  20  may flow via the gas inlet end  12  through the airflow channel  11  and the spoiler channel  41  in order and be sprayed out from the outlet end  411  of the spoiler channel  41 . In detail, the spoiler pipe  40  comprises a bent pipe body  42  and a combined pipe body  43 . which are connected to each other, and the spoiler channel  41  runs through the bent pipe body  42  and the combined pipe body  43 . Here, the outlet end  411  is located at an end of the bent pipe body  42  farther from the combined pipe body  43 , while the combined end  412  is located at an end of the combined. pipe body  43  farther from the bent pipe body  42 , and the combined pipe body  43  is connected to the airflow pipe  10 . The outlet end  411  and the combined end  412  are not on the same axis, causing an injection path A of the gas at a high flow rate when being sprayed out from the outlet end  411  to form an acute angle θ with an axis P of the airflow pipe  10 . 
     When the gas at a high flow rate flows through the spoiler channel  41  to the outlet end  411  and is sprayed out, the gas generates a reaction force on the outlet end  411 . As the outlet end  411  is not located on the axis P, and the injection path A is not parallel to the axis P, when the reaction three acts on the outlet end  411 , the outlet end  411  is in a state of eccentric force, causing the spoiler pipe  40  to drive the rotary member  30  to rotate together. In the process of rotation of the spoiler pipe  40 , because the injection path A of the gas at a high flow rate when being sprayed out from the outlet end  411  forms an acute angle θ with the axis P of the airflow pipe  10 , the outlet end  411  of the spoiler pipe  40  makes a circular motion around the axis P. 
     The liquid flow pipe  50  is provided with a liquid inlet end  51  and a liquid outlet end  52  opposite to each other. The liquid outlet end  52  is located outside the airflow pipe  10 , and the liquid inlet end  51  is located inside a liquid storage tank  60 . Further, the airflow pipe  10  is provided with a circular sidewall  14  that forms the airflow channel  11 , and the circular sidewall  14  is provided with an opening  141  in communication with the airflow channel  11 . In detail, the liquid flow pipe  50  passes through the opening  141  and enters the airflow channel  11 , and the liquid flow pipe  50  extends toward the outlet end  411  of the spoiler channel  41  so that the liquid outlet end  52  is located outside the airflow pipe  10 . The liquid storage tank  60  contains a cleaning liquid  2 , such as water, soap liquid and cleansing liquid. The liquid flow pipe  50  draws the cleaning liquid  2  via the liquid inlet end  51 . In addition, the spray head structure  1  further comprises a leak stopper  80 , which is located at the opening  141  and is used for sealing a gap between the liquid flow pipe  50  and the opening  141  to prevent the gas in the airflow channel  11  from leaking out of the gap. 
     The load member  70  is, for example, a compression spring, is mounted at a second end of the rotary member  30  and covers the spoiler pipe  40 . The load member  70  is used to increase the load of the rotary member  30 , so as to improve the torsion of the rotary member  30 . In this embodiment, the setting of the load member  70  as a compression spring is not intended to limit the present application, In other embodiments, other elements such as a collar can be used instead. 
     In this embodiment, the spray head structure  1  further comprises a nozzle mask  90 . The nozzle mask  90  is provided with a third end  91 , a fourth end  92  and a nozzle tip  93 . The third end  91  and the fourth end  92  are located on two opposite sides of the nozzle mask  90 , the nozzle tip  93  is located at the fourth end  92 , and the outer diameter W 1  of an opening of the third end  91  of the nozzle mask  90  is smaller than the outer diameter W 2  of an opening of the fourth end  92 . The third end  91  of the nozzle mask  90  is sleeved on the gas outlet end  13  of the airflow pipe  10  so that the rotary member  30 , the spoiler pipe  40  and the load member  70  are all located inside the nozzle mask  90 , and the outlet end  411  of the spoiler pipe  40  corresponds to the nozzle tip  93 . Further, when the outlet end  411  of the spoiler pipe  40  rotates around the axis P, the maximum rotation diameter of the outlet end  411  is smaller than the diameter of the nozzle tip  93 , so the outlet end  411  will not interfere with the nozzle tip  93 , and the spoiler pipe  40  can rotate smoothly. Further, the nozzle mask  90  can also protect the spoiler pipe  40  to prevent the spoiler pipe  40  from being damaged by an external force. 
     When a gas at a high flow rate enters the airflow channel  11  and the spoiler channel  41  via the gas inlet end  12  in order and passes through the liquid outlet end  52  of the liquid flow pipe  50  inside the spoiler channel  41 , a Venturi effect will be generated at the liquid outlet end  52  of the liquid flow pipe  50  inside the spoiler channel  41 , causing the pressure at the liquid outlet end  52  to be smaller than the pressure at the liquid inlet end  51 . In this way, due to the influence of the pressure difference between the liquid outlet end  52  and the liquid inlet end  51 , the cleaning liquid  2  in the liquid storage tank  60  is sucked from the liquid inlet end  51  to the liquid outlet end  52  and discharged. Next, the cleaning liquid  2  discharged from the liquid outlet end  52  will be mixed with the gas at a high flow rate in the spoiler channel  41  and atomized, and then sprayed out from the outlet end  411  together with the gas at a high flow rate. While the cleaning liquid  2  and the gas at a high flow rate are sprayed out from the outlet end  411 , the outlet end  411  rotates around the axis P, so that the gas-liquid mixed cleaning jet water is continuously sprayed in a swirling state. Therefore, the cleaning jet water in a swirling spray state can increase the spray area of the spray head structure  1 , thereby increasing the cleaning area. On the other hand, the nozzle mask  90  limits the spray range of the outlet end  411  to avoid an excessive and uncontrolled spray range of the cleaning jet water which will affect the operation of the operator. 
     Further, as the load member  70  is mounted on the rotary member  30 , increasing the load of the rotary member  30 , so as to improve the torsion of the rotary member  30 , the overall cleaning ability of the spray head structure  1  can be improved. In detail, please refer to the table below. The table below shows a comparison between the spray head structure  1  of this embodiment and the spray head structure  1  without the load member  70  under the same water volume, in terms of air volume, rotation speed without supply of water, rotation speed with supply of water, and water consumption time. Therefore, it can be known that compared with the spray head structure  1  without the load member  70 , the spray head structure  1  of this embodiment has good performance in terms of the items such as air volume, rotation speed without supply of water, rotation speed with supply of water, and water consumption time, so the load member  70  can improve the overall cleaning ability of the spray head structure  1 . 
     
       
         
           
               
               
               
             
               
                   
               
               
                   
                 Rotary spray  
                 Rotary spray head  
               
               
                   
                 head structure 
                 structure without a  
               
               
                   
                 with a load member 
                 load member 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
            
               
                 Volume of water drum 
                 600 
                 600 
               
               
                 (mL) 
                   
                   
               
               
                 Air volume (L/min) 
                 125 
                 102 
               
               
                 Rotation speed of the spray 
                 4100 
                 6600 
               
               
                 head structure without 
                   
                   
               
               
                 supply of water (rpm) 
                   
                   
               
               
                 Rotation speed of the spray 
                 3900 
                 6300 
               
               
                 head structure with supply 
                   
                   
               
               
                 of water (rpm) 
                   
                   
               
               
                 Water consumption time 
                 12 min 49 s 
                 4 min 37 s 
               
               
                   
               
            
           
         
       
     
     Further, the spray head structure  1  of this embodiment further comprises a fan component  100 , a composite member  110  and a wind scooper  120 , and the rotary member  30  comprises a sleeving section  34 , a mounting section  35  and an extending section  36  on the outer surface, which are connected to each other. The mounting section  35  of the rotary member  30  is located between the sleeving section  34  and the extending section  36 , and the first end  31  is located at an end of the sleeving section  34  farther from tire mounting section  35 , and the second end  32  is located at an end of the extending section  36  farther from the mounting section  35 . The sleeving section  34  of the rotary member  30  is sleeved on the airflow pipe  10 , and the load member  70  and die fan component  100  are coaxial and are arranged at the extending section  36  and the mounting section  35  respectively. 
     Further, the nozzle mask  90  is further provided with a through opening  94 , which is located between the third end  91  and the fourth end  92 . The composite member  110  is sleeved on the airflow pipe  10  and provided with an air inlet  1101 . The air inlet  1101  corresponds to the through opening  94 . The wind scooper  120  is located inside the nozzle mask  90  and provided with an air channel  1201  and an air outlet  1202  in communication with the air channel  1201 . One end of the wind scooper  120  opposite to the air outlet  1202  is sleeved on the airflow pipe  10 . In more detail, one end of the wind scooper  120  opposite to the air outlet  1202  is mounted at the composite member  110 , so as to be sleeved on the airflow pipe  10 . The combined pipe body  43  of the spoiler pipe  40 , the fan component  100 , the rotary member  30  and the load member  70  are located inside the air channel  1201  of the wind scooper  120 . 
     As shown in  FIG.  2   , in this embodiment, when the rotary member  30  rotates, it will drive the fan component  100  to rotate together, so that an airflow passes through the through opening  94 , enters the wind scooper  120  from the air inlet  1101 , passes through the air channel  1201  and the air outlet  1202  along a first direction D 1  and leaves the wind scooper  120 . Because the wind scooper  120  has an effect of collecting wind, the airflow can further enhance the degree of mixing and atomization of the gas at a high flow rate and the cleaning liquid  2 , thereby improving the overall cleaning effect of the spray head structure  1 . In addition to the elect of collecting wind, the wind scooper  120  can also ensure that tire load member  70  will not shake excessively when the load member  70  rotates. 
     In this embodiment, the airflow generated by the fan component  100  flows from the air inlet  1101  to the air outlet  1202  along the first direction D 1 , but it is not limited to this. Please refer to  FIG.  3   ,  FIG.  3    is a schematic view of operation of a spray head structure disclosed by a second embodiment of the present application. In this embodiment, the flow direction of the airflow generated by the fan component  100 ′ is opposite to the fan component  100  of  FIG.  1   . In detail, when the rotary member  30 ′ drives the fan component  100 ′ to rotate, an airflow enters the wind scooper  120 ′ from the air outlet  1202 ′ and then the airflow passes through the air channel  1201 ′, the air inlet  1101 ′ and the through opening  94 ′ in order along a second direction D 2  and leaves the nozzle mask  90 ′. Because the wind scooper  120 ′ has an effect of collecting wind, it can further enhance the ability of the spray head structure  1 ′ to suck impurities adjacent to the outlet end  411 ′ of the spoiler channel  41 ′, thereby improving the overall cleaning effect of the spray head structure  1 . 
     In this embodiment, the load member and the fan component are used to improve the overall cleaning effect of the spray head structure, but it is not limited to this. Please refer to  FIG.  4   .  FIG.  4    is a schematic view of operation of a spray head structure disclosed by a third embodiment of the present application. 
     The spray head stricture  1 ″ in this embodiment further comprises a torsion adjuster  130 ″. The torsion adjuster  130 ″ is, for example, a brush structure. Further, the torsion adjuster  130 ″ is arranged at the composite member  110 ″, located inside the air channel  1201 ″ of the wind scooper  120 ″ and in contact with the rotary member  30 ″, while other detail components of the spray head structure  1 ″ are similar to the detail components of the spray head structure  1  in the embodiment shown in  FIG.  1   , so they are not described again. 
     In this embodiment, when the rotary member  30 ″ rotates and brushes the torsion adjuster  130 ″, the torsion adjuster  130 ″ will provide a resistance against the rotary member  30 ″, causing increase of torsion of the rotary member  30 ″, thereby further enhancing the overall cleaning ability of the spray head structure  1 . 
     According to the spray head structure disclosed in the above embodiment, since the fan component and the load member are jointly mounted on the rotary member, when a gas at a high flow rate flows through the spoiler pipe, it will drive the fan component and the load member to rotate. Here, the rotating fan component will generate an airflow, which flows from the fan component toward the outlet end to improve the atomization effect of the liquid and the gas at a high flow rate, or flows from the outlet end toward the fan component to perform the suction of impurities adjacent to the outlet end. Further, the load member increases the load of the rotary member, so as to improve the torsion of the rotary member. In this way, under the settings of the fan component and the load member, the overall cleaning ability of the spray head structure can be further improved. 
     Further, the setting of a torsion adjuster arranged at the composite member can increase the torsion of the rotary member, so the overall cleaning ability of the spray head structure is further improved. 
     The foregoing descriptions are embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and modifications. All modifications, identical replacements and improvements made without departing from the spirit and principle of the present application shall be within the protection scope of the present application. 
     It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the technical field of the present application. The terms used in the description of the present application herein are only for the purpose of describing, specific embodiments and not intended to limit the present application. The term “and/or” used herein includes any and all combinations of one or more relevant listed items. The terms “vertical,” “horizontal,” “first,” “second” and similar expressions used herein are for illustrative purposes only, and do not mean the only implementation manner.