Air suction shower head

Abstract

The air suction shower head comprises a body, a water distribution seat and a plug, the water distribution seat is installed in the body, a water-air mixing cavity and a water inlet hole communicated with the water-air mixing cavity are formed in the water distribution seat, the water inlet hole sequentially comprises a water inlet section and an air suction section in the water inlet direction, and an air suction hole is formed in the inner wall of the air suction section. The plug comprises a film capable of elastically deforming, the film can be tightly attached to the inner wall of the air suction section to seal the air suction hole when not deforming, water flow can form a water column after passing through the water inlet section, a distance exists between the water column and the film when not deforming, and the film can retract inwards to open the air suction hole in the water passing state. When water flow is input from the water inlet section and then passes through the thin film, a negative pressure area can be generated on the inner side of the thin film, the thin film contracts and deforms inwards under the influence of external atmospheric pressure, the air suction hole is opened, air is sucked from the outside, air and water are mixed to generate bubble water, the thin film is reset after water is closed, non-return is achieved, and air hole water leakage is prevented.

Description

Technical Field

[0001] This utility model relates to the field of shower head technology, and in particular to an air-suction shower head. Background Technology

[0002] Sparkling water, also known as oxygenated water, is a showerhead that draws in air during the water flow process, mixing the water with air before it is ejected from the nozzle. Because the water contains a certain amount of gas, the water flow feels soft on the body and makes people feel hydrated and full. At the same time, sparkling water can also improve water utilization and achieve a certain water-saving effect, overcoming the shortcomings of traditional direct water jets that have a strong impact and waste water. Therefore, it is a water flow mode that is widely favored by the industry and users.

[0003] Most existing air-suction showerheads used for showering employ a single air intake hole next to the water pipe. After the water is turned off, the residual water in the showerhead cavity will back out from the air intake hole. Utility Model Content

[0004] The present invention aims to at least partially solve one of the aforementioned technical problems in the related art. Therefore, the present invention proposes an air-suction shower head.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] According to an embodiment of the present invention, a suction shower head includes a body, a water distribution base, and a plug. The water distribution base is installed in the body and has a water-air mixing chamber and a water inlet communicating with the water-air mixing chamber. The water inlet includes a water inlet section and a suction section in sequence along the water inlet direction. The inner wall of the suction section has a suction hole. The plug includes an elastically deformable membrane. The membrane is disposed in the suction section and is adapted to the inner wall of the suction section. When the membrane is not deformed, it can tightly adhere to the inner wall of the suction section to close the suction hole. After water flows through the water inlet section, it can form a water column. There is a distance between the water column and the membrane when it is not deformed. When water is flowing, the membrane can retract to open the suction hole.

[0007] The air-suction shower head according to the embodiments of this utility model has at least the following beneficial effects:

[0008] When water flows in from the inlet section and passes through the membrane, the water jet is sprayed into the water-air mixing chamber in the form of a water column. At this time, a negative pressure zone is generated inside the membrane. Because there is a distance between the membrane and the water column that allows the membrane to contract inward, the membrane can be affected by the external atmospheric pressure and will contract and deform inward. The air intake hole opens and draws in air from the outside, realizing the mixing of air and water to produce bubble water. After the water is turned off, the membrane resets to achieve backflow prevention and prevent water leakage from the air hole.

[0009] According to some embodiments of the present invention, the membrane is composed of two or more membrane flaps, which are spaced apart circumferentially along the water inlet.

[0010] According to some embodiments of the present invention, the plug further includes a fixing seat, which is annular and embedded in the water inlet section. The inner diameter of the fixing seat is smaller than the inner diameter of the air intake section. The two ends of the fixing seat in the axial direction are the water inlet end and the water outlet end, respectively. The membrane is fixed to the water outlet end of the fixing seat.

[0011] According to some embodiments of the present invention, the inner wall of the water inlet end of the fixed base is formed with a guide cone surface, and the diameter of the guide cone surface gradually decreases along the water inlet direction.

[0012] According to some embodiments of the present invention, the inner wall of the fixing seat is provided with spiral ribs so that a spiral jet channel is formed inside the fixing seat.

[0013] According to some embodiments of the present invention, a cover plate is also included, which covers the water-air mixing chamber above. The upper surface of the cover plate is provided with an air intake chamber. The wall of the air intake chamber has at least one air inlet hole. One end of the air intake chamber is provided with an air intake channel, which is located above the air intake section. The air intake channel connects the air intake chamber and the air intake hole, and the air inlet hole is away from the air intake channel.

[0014] According to some embodiments of the present invention, it also includes an upper cover, the upper surface of which is provided with a surrounding rib, the upper cover covering the area enclosed by the surrounding rib to form the air intake chamber, and the air inlet opening is opened on the upper cover.

[0015] According to some embodiments of the present invention, the width of the air intake chamber in the vertical direction gradually increases along the airflow direction.

[0016] According to some embodiments of the present invention, the inner wall surfaces of the air intake chamber and the air intake channel are coated with a hydrophobic coating.

[0017] According to some embodiments of this utility model, it also includes a water outlet switching valve for switching the water outlet mode of the shower head. The water outlet switching valve is installed inside the handle of the main body. The water outlet switching valve includes a valve body and a button assembly. The valve body is provided with a water outlet column. The water outlet column is embedded in the water inlet hole and is connected to the water inlet end of the fixed base. The ratio of the cross-sectional area A1 of the water outlet column to the minimum projected area A2 of the spiral spray channel satisfies A1≥4*A2.

[0018] According to some embodiments of this utility model, it further includes a sealing seat and a water outlet net. The sealing seat is connected to the lower part of the water distribution seat. The water-air mixing chamber is provided with a plurality of water troughs. The sealing seat is provided with a water distribution chamber, which is connected to the water troughs. The bottom of the water distribution chamber is provided with a plurality of water distribution holes. The water outlet net is located below the sealing seat. The water outlet net is provided with water outlet holes. The sealing seat and the water outlet net form a water distribution space for the flow of bubble water. The water distribution holes are connected to the water outlet holes through the water distribution space. The water outlet end of the water inlet hole is provided with a ring of water-blocking ribs along the circumference of the water inlet hole. The water passage area of ​​the water-blocking ribs is A3. The total water passage area of ​​all the water troughs is A4. The total water passage area of ​​all the water distribution holes is A5. The total water passage area of ​​all the water outlet holes is A6, and A4 > A5 > A6 > A3 > A2.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is an exploded view of the suction shower head of this utility model;

[0022] Figure 2 This is a schematic diagram of the plug of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the water distribution seat of this utility model;

[0024] Figure 4 This is a first partial sectional view of the air-suction shower head of this utility model;

[0025] Figure 5 yes Figure 4 A magnified view of a section at point A (water shut off);

[0026] Figure 6 yes Figure 4 A magnified view of a section at point A (in water flow mode);

[0027] Figure 7 This is a schematic diagram of the structure of the cover plate of this utility model;

[0028] Figure 8 This is a second partial sectional view of the air-suction shower head of this utility model;

[0029] Figure 9 This is a schematic diagram of the sealing seat of this utility model.

[0030] Reference numerals: Body 100, water distribution seat 200, water-air mixing chamber 210, water inlet 220, air intake 221, water baffle 222, water inlet section 223, air intake section 224, lower water tank 230, plug 300, fixing seat 310, guide cone surface 311, spiral rib 312, membrane 320, membrane flap 321, cover plate 400, air intake chamber 410, air intake channel 420, surrounding rib 430, upper cover 500, air inlet 510, water outlet switching valve 600, water outlet column 610, sealing seat 700, water distribution chamber 710, water distribution hole 711, water outlet net 800, water outlet hole 810. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Reference Figure 1-9 A suction shower head includes a body 100, a water distribution base 200, and a stopper 300. The water distribution base 200 is installed inside the body 100. The water distribution base 200 has a water-air mixing chamber 210 and a water inlet 220 communicating with the water-air mixing chamber 210. The water inlet 220 includes a water inlet section 223 and a suction section 224 along the water inlet direction. The inner wall of the suction section 224 has a suction hole 221. The stopper 300 includes an elastically deformable diaphragm 320, which is disposed in the suction section 224. The shape of the membrane 320 is adapted to the inner wall of the air intake section 224. For example, if the water inlet 220 is a round hole, the membrane 320 will be arc-shaped; if the water inlet 220 is a square hole, the membrane 320 will be a straight sheet. When the membrane 320 is not deformed, it can tightly adhere to the inner wall of the air intake section 224 to seal the air intake hole 221. After water flows through the water intake section 223, it can form a water column. There is a distance between this water column and the membrane when it is not deformed. Under water flow conditions, the membrane 320 can retract to open the air intake hole 221. The membrane 320 is made of silicone. The number of air intake holes 221 is ≥2, and they can be located on both sides of the water inlet 220, or evenly distributed in a ring array around the axis of the water inlet 220.

[0034] Working principle: such as Figure 5-6 As shown (the dashed arrows in the figure indicate the airflow direction, and the solid arrows indicate the water flow direction), when the water flows in from the inlet section 223 and then through the membrane 320, the water is sprayed into the water-air mixing chamber 210 in the shape of a water column. At this time, a negative pressure zone is generated inside the membrane 320. Since there is a distance between the membrane and the water column that allows the membrane to contract inward, the membrane 320 can be deformed inward by the influence of the external atmospheric pressure. The air intake hole 221 opens, drawing in air from the outside, realizing the mixing of air and water to produce bubble water. After the water is turned off, the membrane 320 resets, realizing the backflow prevention and preventing water leakage from the air hole.

[0035] In some embodiments of this utility model, the plug 300 further includes a fixing seat 310, which is annular and embedded in the water inlet section 223. The inner diameter of the fixing seat is smaller than the inner diameter of the air intake section 224. The two ends of the fixing seat 310 in the axial direction are the water inlet end and the water outlet end, respectively. The membrane 320 is fixed to the water outlet end of the fixing seat 310. The fixing seat 310 provides a stable mounting base for the membrane 320. This structure ensures that the membrane 320 can be accurately positioned at a specific position (air intake section 224) within the water inlet hole 220, allowing it to elastically deform inward under the action of water flow. The membrane 320 and the fixing seat 310 are an integral unit; during installation, the entire plug is simply inserted into the water inlet hole 220, making assembly and disassembly convenient.

[0036] In some embodiments of this utility model, the membrane 320 is composed of two or more membrane flaps 321, which are spaced apart circumferentially along the water inlet 220. The membrane flaps 321 can be arc-shaped or straight. In some embodiments, the membrane flaps 321 are arc-shaped, and two or more membrane flaps 321 are arranged in a ring array around the axis of the water inlet 220 to form a non-closed circular area. The inner diameter d1 of this circular area is larger than the inner diameter d2 of the fixing base 310 (e.g., ...). Figure 5 As shown in the diagram, this design ensures that the water flowing through the fixed seat 310 to the air intake section 224 does not come into contact with the membrane 320, allowing space for the membrane 320 to contract and deform. The design of the membrane flap 321 is beneficial to improving air intake efficiency. If the membrane 320 is a complete ring, its rigidity is high, and the bending resistance is large due to its overall integrity during deformation, making it difficult to effectively contract in low flow or low pressure environments. The segmented membrane flaps 321 have a narrower structure and are independently movable. Each membrane flap 321 has a lower elastic deformation threshold and can respond more sensitively to the negative pressure generated by the water flow, ensuring that the air intake hole 221 can be opened in time under different water pressures, thus improving air intake efficiency. The circumferentially spaced membrane flaps 321 can contract evenly inward, avoiding uneven deformation or jamming of the entire membrane 320 due to local stress concentration.

[0037] In some embodiments of this invention, the inner wall of the water inlet end of the fixing base 310 is formed with a guide cone surface 311, the diameter of which gradually decreases along the water inlet direction. The tapered structure (reduced diameter) of the cone surface conforms to the principles of fluid dynamics, causing the cross-sectional area to gradually narrow as water flows into the water inlet hole 220, thus increasing the flow velocity. The increased flow velocity leads to a further reduction in pressure inside the membrane 320, forming a stronger negative pressure zone. This makes the membrane 320 more likely to contract inward due to the internal and external pressure difference when water flows through it, ensuring that the air intake hole 221 opens promptly and fully, thereby improving air intake efficiency.

[0038] In some embodiments of this utility model, the inner wall of the fixing base 310 is provided with spiral ribs 312 so that a spiral jet channel is formed inside the fixing base 310. The spiral jet channel and the guide cone surface 311 accelerate and pressurize the fluid, while also allowing the fluid to flow in an orderly manner, reducing turbulence, noise and energy loss.

[0039] In some embodiments of this utility model, a cover plate 400 is also included, which covers the water-air mixing chamber 210. The upper surface of the cover plate 400 is provided with an air intake chamber 410. The wall of the air intake chamber 410 has at least one air inlet 510. One end of the air intake chamber 410 is provided with an air intake channel 420, which is located above the air intake section 224 and connects the air intake chamber 410 and the air intake 221. The air inlet 510 is located away from the air intake channel 420. The cover plate 400 is welded to the wall of the water-air mixing chamber 210. The air inlet 510 communicates with the internal environment of the shower head. The air intake chamber 410 has a long and narrow structure. The air intake channel 420 is located at one end of the length direction of the air intake chamber 410, and at least one air inlet 510 is located at the other end of the length direction of the air intake chamber 410. Existing air-suction showerheads, especially handheld showerheads, suffer from weak jet power and high noise. This invention employs a water-air channel separation structure, using physical isolation to create an air-suction chamber 410 between the air inside the showerhead and the air-suction hole 221 as a buffer zone, effectively reducing the noise generated by the showerhead's air intake. Furthermore, in the event of a backflow prevention failure of the diaphragm 320, the air-suction chamber 410 also acts as a protective barrier against leakage from the air-suction hole 221. Because the air-suction chamber 410 has a long and narrow structure, and the air-suction hole 221 is far from the air inlet 510, a small amount of residual water that has flowed back can be retained at the bottom of the air-suction chamber 410. When water is supplied again, negative pressure draws this residual water into the water-air mixing chamber 210. Figure 8 As shown in the figure (the dashed arrows indicate the airflow direction, and the solid arrows indicate the waterflow direction).

[0040] In some embodiments of this utility model, a top cover 500 is also included. The upper surface of the cover plate 400 is provided with a surrounding rib 430. The top cover 500 covers the area enclosed by the surrounding rib 430 to form an air intake chamber 410. An air inlet 510 is opened in the top cover 500. The cover plate 400 and the surrounding rib 430 are welded together to form a closed air intake chamber 410. Since shower heads are used horizontally or vertically 80% of the time, and rarely inverted, the air inlet 510 is located on the top cover 500, so that the air inlet 510 faces upward and is opposite to the direction of the shower head water outlet 810, reducing the possibility of water leakage from the air inlet 510.

[0041] In some embodiments of this invention, the width of the suction chamber 410 in the vertical direction gradually increases along the airflow direction. Compared to a straight wall, the suction chamber 410 is conical, with its walls gradually expanding outwards along the airflow direction. This significantly reduces the frictional resistance between the airflow and the chamber walls, reducing pressure loss and thus noise. Furthermore, the conical design allows for greater storage of water leaking from the suction port 221, preventing backflow from the air inlet port 510.

[0042] In some embodiments of this invention, the inner walls of the intake chamber 410 and the intake channel 420 are coated with a hydrophobic coating. The superhydrophobic coating (contact angle > 150°) causes the inhaled micro-water mist to roll off in a spherical shape, preventing the formation of a water film or droplet accumulation. The continuous hydrophobic surface reduces the viscosity effect between the airflow and the chamber wall, resulting in a more uniform airflow velocity distribution. The hydrophobic coating increases the proportion of the airflow core area from 65% to 85%, reducing the whistling sound caused by boundary layer separation. Furthermore, the intake port 221 and the inlet port 510 are mirror-polished; the smooth polished surface improves the stability of the airflow boundary layer, preventing vibration of the intake port 221 wall caused by airflow separation.

[0043] In some embodiments of this utility model, a water outlet switching valve 600 for switching the water outlet mode of the shower head is also included. The water outlet switching valve 600 is installed inside the handle of the main body 100. The water outlet switching valve 600 includes a valve body and a button assembly. The valve body is provided with a water outlet column 610. The water outlet column 610 is embedded in the water inlet hole 220 and is connected to the water inlet end of the fixed base 310. The ratio of the cross-sectional area A1 of the water outlet column 610 to the minimum projected area A2 of the spiral jet channel satisfies A1≥4*A2. Let the flow velocity at the outlet column 610 be V1, and the flow velocity at the spiral jet channel be V2. Based on the principle of flow conservation and Bernoulli's equation, and given that A1 ≥ 4 * A2, we can deduce that V2 ≥ 4 * V1. When water flows from the outlet column 610 and passes through the spiral jet channel, the water is injected at double speed into the water-air mixing chamber 210, generating a large negative pressure inside the membrane 320. According to theoretical and practical verification, when A1 ≥ 4 * A2, the air intake 221 is leak-proof and has excellent air intake efficiency. The structure of the outlet switching valve 600 can be referenced in patent CN219317693U.

[0044] In some embodiments of this utility model, a sealing seat 700 and a water outlet screen 800 are also included. The sealing seat 700 is connected below the water distribution seat 200. A plurality of water troughs 230 are provided on the water-air mixing chamber 210. The sealing seat 700 is provided with a water distribution chamber 710, which communicates with the water troughs 230. A plurality of water distribution holes 711 are provided at the bottom of the water distribution chamber 710. The water outlet screen 800 is located below the sealing seat 700 and has water outlet holes 810. A water distribution space is formed between the water distribution net 800 and the water outlet net 800 to allow the flow of bubble water. The water distribution hole 711 is connected to the water outlet hole 810 through the water distribution space. A water-blocking rib 222 is provided around the water outlet end of the water inlet hole 220. The water passage area of ​​the water-blocking rib 222 is A3. The total water passage area of ​​all the water outlet troughs 230 is A4. The total water passage area of ​​all the water distribution holes 711 is A5. The total water passage area of ​​all the water outlet holes 810 is A6. Let A4 > A5 > A6 > A3 > A2. The inlet hole 220, water-air mixing chamber 210, drain trough 230, water distribution chamber 710, water distribution hole 711, and outlet hole 810 form a closed water circuit chain. The relationship between the nodes in the chain satisfies A4 > A5 > A6 > A3 > A2, which minimizes pressure loss when water flows through each node, ensuring strong jet force at the showerhead's terminal outlet to satisfy the consumer's showering experience. The baffle rib 222 prevents fluid from flowing back along the side wall of the water-air mixing chamber 210 into the negative pressure zone, thus avoiding affecting suction efficiency. Specifically, there are 10 drain troughs 230 arranged in a ring array around the edge of the water-air mixing chamber 210. The water distribution chamber 710 is a non-closed ring, positioned opposite the drain trough 230. There are 12 water distribution holes 711 evenly distributed at the bottom of the water distribution chamber 710, and 40 outlet holes 810 evenly distributed on the outlet net 800.

[0045] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A suction shower head, characterized in that, The device includes a main body (100), a water distribution seat (200), and a plug (300). The water distribution seat (200) is installed inside the main body (100). The water distribution seat (200) is provided with a water-air mixing chamber (210) and a water inlet (220) communicating with the water-air mixing chamber (210). The water inlet (220) includes a water inlet section (223) and an air intake section (224) in sequence along the water inlet direction. The inner wall of the air intake section (224) has an air intake hole (221). The plug (300) includes an elastic... A deformable membrane (320) is disposed in the air intake section (224). The membrane (320) is adapted to the inner wall of the air intake section (224). When the membrane (320) is not deformed, it can adhere tightly to the inner wall of the air intake section (224) to close the air intake hole (221). After the water flows through the water inlet section (223), a water column can be formed. There is a distance between the water column and the membrane when it is not deformed. When water is flowing, the membrane (320) can retract to open the air intake hole (221).

2. The suction shower head according to claim 1, characterized in that, The membrane (320) is composed of two or more membrane flaps (321), which are spaced apart circumferentially along the water inlet (220).

3. The air-suction shower head according to claim 1, characterized in that, The plug (300) also includes a fixing seat (310), which is annular and is fitted into the water inlet section (223). The inner diameter of the fixing seat is smaller than the inner diameter of the air intake section (224). The two ends of the fixing seat (310) in the axial direction are the water inlet end and the water outlet end, respectively. The membrane (320) is fixed to the water outlet end of the fixing seat (310).

4. The suction shower head according to claim 3, characterized in that, The inner wall of the water inlet end of the fixed seat (310) is formed with a guide cone surface (311), and the diameter of the guide cone surface (311) gradually decreases along the water inlet direction.

5. The suction shower head according to claim 3 or 4, characterized in that, The inner wall of the fixing seat (310) is provided with spiral ribs (312) so that a spiral injection channel is formed inside the fixing seat (310).

6. The suction shower head according to claim 1, characterized in that, It also includes a cover plate (400) that covers the water-air mixing chamber (210). The upper surface of the cover plate (400) is provided with an air intake chamber (410). The chamber wall of the air intake chamber (410) has at least one air inlet hole (510). One end of the air intake chamber (410) is provided with an air intake channel (420). The air intake channel (420) is located above the air intake section (224). The air intake channel (420) connects the air intake chamber (410) and the air intake hole (221). The air inlet hole (510) is away from the air intake channel (420).

7. The suction shower head according to claim 6, characterized in that, It also includes an upper cover (500), the upper surface of which is provided with a surrounding rib (430), the upper cover (500) covers the area enclosed by the surrounding rib (430) to form the air intake chamber (410), and the air inlet (510) is opened on the upper cover (500).

8. The suction shower head according to claim 6, characterized in that, The width of the air intake chamber (410) gradually increases in the vertical direction along the airflow direction.

9. The suction shower head according to claim 5, characterized in that, It also includes a water outlet switching valve (600) for switching the shower head water outlet mode. The water outlet switching valve (600) is installed inside the handle of the main body (100). The water outlet switching valve (600) includes a valve body and a button assembly. The valve body is provided with a water outlet column (610). The water outlet column (610) is embedded in the water inlet (220), and the water outlet column (610) is connected to the water inlet end of the fixed seat (310). The ratio of the water passage area A1 of the water outlet column (610) to the minimum projected area A2 of the spiral jet channel satisfies A1≥4*A2.

10. The suction shower head according to claim 9, characterized in that, It also includes a sealing seat (700) and a water outlet screen (800). The sealing seat (700) is connected below the water distribution seat (200). The water-air mixing chamber (210) is provided with several water troughs (230). The sealing seat (700) is provided with a water distribution chamber (710), which is connected to the water troughs (230). The bottom of the water distribution chamber (710) is provided with several water distribution holes (711). The water outlet screen (800) is located below the sealing seat (700) and is provided with water outlet holes (810). The sealing seat (700) is connected below the water distribution seat (200). The water distribution space is formed between the water distribution hole (711) and the water outlet net (800) to allow the flow of bubble water. The water distribution hole (711) is connected to the water outlet hole (810) through the water distribution space. The water outlet end of the water inlet hole (220) is provided with a water baffle (222) around the circumference of the water inlet hole (220). The water passage area of ​​the water baffle (222) is A3. The total water passage area of ​​all the water troughs (230) is A4. The total water passage area of ​​all the water distribution holes (711) is A5. The total water passage area of ​​all the water outlet holes (810) is A6. Let A4 > A5 > A6 > A3 > A2.

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