A water outlet device

Abstract

This utility model discloses a water outlet device, including a main body with a water passage cavity and a flow-limiting column. The water passage cavity has an inlet and an outlet. The flow-limiting column protrudes from the wall of the water passage cavity and includes at least a first part and a second part located downstream of the first part, the second part being larger than the first part. A flow-limiting element includes a fixed end and a free end. The fixed end is fixed relative to the main body, and the flow-limiting column is located on the side of the free end opposite to the fixed end. A water passage gap is formed between the free end and the flow-limiting column, connecting the inlet and outlet. The free end is adapted to deform from a first position corresponding to the first part to a second position corresponding to the second part when the inlet water pressure increases, thereby reducing the water passage area of ​​the water passage gap and achieving flow control. Thus, under different water pressures, multi-stage flow control can be achieved, causing the flow rate to slow down or gradually increase horizontally (or remain constant).

Description

Technical Field

[0001] This utility model relates to the field of water discharge products, specifically to a water discharge device. Background Technology

[0002] In existing technologies, a flow restrictor is usually installed in the water passage cavity of the water outlet device. The flow restrictor deforms downward under water pressure, changing the distance between the flow restrictor and the cavity wall (flow restrictor surface) of the water passage cavity to achieve the flow restriction effect. However, in existing technologies, the flow restrictor surface is usually a plane with no change in size and is located below the flow restrictor. When the water pressure increases, the flow rate will increase linearly or abruptly. Although there is a certain flow restriction effect, it is not obvious. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems existing in the background art or to provide a material basis for overcoming the above-mentioned defects or problems existing in the background art, and to provide a water outlet device.

[0004] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] Option 1: A water outlet device, including...

[0006] The body has a water passage cavity and a flow-limiting column. The water passage cavity has an inlet and an outlet. The flow-limiting column protrudes from the cavity wall of the water passage cavity and includes at least a first part and a second part disposed downstream of the first part. The size of the second part is larger than the size of the first part.

[0007] A flow restrictor includes a fixed end and a free end. The fixed end is fixed relative to the body, and the flow restrictor column is located on the side of the free end away from the fixed end. A water passage gap is formed between the free end and the flow restrictor column, connecting the inlet and the outlet. The free end is adapted to deform from a first position corresponding to the first part to a second position corresponding to the second part when the inlet water pressure increases, so as to reduce the water passage area of ​​the water passage gap.

[0008] Option 2, based on Option 1, is that the first part is annular, or there are at least two first parts, each of which is spaced apart around the central axis of the body, and a first water passage is formed between adjacent first parts.

[0009] Option 3, based on Option 1, is that the second part is annular, or there are at least two second parts, each of which is spaced apart around the central axis of the body, and a second water passage is formed between adjacent second parts.

[0010] Option 4, based on Option 1, has at least two first parts, each of which is spaced apart around the central axis of the body; the second part corresponds one-to-one with the first part, with a first water passage formed between adjacent first parts, and a second water passage connected to the first water passage formed between adjacent second parts.

[0011] Option 5, based on Option 1, further includes at least two central axis limiting posts surrounding the body. The limiting posts are located downstream of the flow-limiting posts, and a third water passage is formed between adjacent limiting posts. The third water passage is connected to the water passage gap, and the free end is adapted to abut against the limiting posts to limit further deformation.

[0012] Option 6, based on Option 1, further includes a first water outlet chamber, a second water outlet chamber, an air passage gap, and an acceleration hole;

[0013] The air gap connects the first water outlet chamber and the second water outlet chamber;

[0014] The water outlet end of the acceleration hole is located near the air gap, which is adapted to accelerate the water flow to generate negative pressure at its water outlet end, so that when the acceleration hole is connected to the first water outlet chamber, gas enters the first water outlet chamber through the water outlet end of the second water outlet chamber and the air gap, or when the acceleration hole is connected to the second water outlet chamber, gas enters the second water outlet chamber through the water outlet end of the first water outlet chamber and the air gap.

[0015] Option 7, based on Option 6, the main body includes a water outlet body and a switching component. The water outlet body is provided with a first water outlet chamber and a second water outlet chamber. The switching component is provided with the acceleration hole. The air passage gap is formed between the switching component and the water outlet body. The switching component is adapted to move relative to the water outlet body so that the acceleration hole communicates with the first water outlet chamber or the second water outlet chamber.

[0016] Option 8, based on Option 7, wherein the switching component is rotatably connected to the water outlet body around the first axis, the first water outlet cavity is provided with a plurality of first water inlets arranged around the first axis, the second water outlet cavity is provided with a plurality of second water inlets arranged around the first axis, the first water inlets and the second water inlets are adapted to communicate with the acceleration hole, and the first water inlets and the second water inlets are alternately arranged.

[0017] Option 9, based on Option 7, wherein the switching component is rotatably connected to the water outlet body around a first axis, the first water outlet chamber is provided with a first water inlet end, the second water outlet chamber is provided with a second water inlet end, and the first water inlet end and the second water inlet end are adapted to communicate with the acceleration hole; the water outlet body is provided with a first inclined surface, the first water inlet end and the second water inlet end are provided on the first inclined surface, and the first inclined surface and the switching component form the air passage gap.

[0018] Option 10, based on Option 1, further includes a descaling rod. The main body includes a filter surface and a descaling hole. The water inlet opening of the descaling hole is located on the filter surface. The filter surface is provided with filter holes. The filter surface is inclined so that impurities on the filter surface can move toward the water inlet of the descaling hole. The descaling rod is adapted to slide to seal or open the water inlet of the descaling hole.

[0019] Option 11, based on Option 10, further includes a reset component. The descaling rod is adapted to move under water pressure when water enters the water outlet device to seal the inlet end of the descaling hole. At this time, the reset component stores energy. The reset component is adapted to release energy when the water outlet device stops water flow to drive the descaling rod to open the inlet end of the descaling hole and / or the descaling rod is adapted to move under water pressure when water enters the water outlet device to seal the inlet end of the descaling hole. The descaling rod has an operating end, which is adapted to be pressed to drive the descaling rod to move away from the device and open the inlet end of the descaling hole.

[0020] As can be seen from the above description of the present invention and its preferred embodiments, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0021] 1. In Scheme 1 and its preferred embodiments, a water outlet device includes...

[0022] The body has a water passage cavity and a flow-limiting column. The water passage cavity has an inlet and an outlet. The flow-limiting column protrudes from the cavity wall of the water passage cavity and includes at least a first part and a second part located downstream of the first part. The size of the second part is larger than that of the first part.

[0023] The flow-limiting component includes a fixed end and a free end. The fixed end is fixed relative to the main body, and the flow-limiting column is located on the side of the free end opposite to the fixed end. A water-passing gap is formed between the free end and the flow-limiting column, connecting the inlet and outlet. The free end is adapted to deform from a first position corresponding to the first part to a second position corresponding to the second part when the inlet water pressure increases, thereby reducing the water-passing area of ​​the water-passing gap and achieving flow control. In the prior art, since the size of the flow-limiting surface does not change, the flow rate will increase linearly or abruptly when the water pressure increases. Although there is a certain flow-limiting effect, it is not obvious. In this embodiment, the flow-limiting column includes at least a first part and a second part located downstream of the first part. The size of the second part (the size along the direction perpendicular to the first axis) is larger than the size of the first part, thereby achieving multi-stage flow control under different water pressures, making the flow rate slow down or gradually increase horizontally (or remain horizontally constant). The sizes of the first and second parts can be adjusted during design, and a size with better flow-limiting effect can be obtained through experiments.

[0024] 2. In Scheme 2 and its preferred embodiments, the first part is annular, with a simple structure. Alternatively, there may be at least two first parts, spaced apart, forming a first water passage between adjacent first parts to increase the water flow. Furthermore, the flow can be limited by adjusting the size of the first water passage during the design phase.

[0025] 3. In Scheme 3 and its preferred embodiments, the second part is annular, with a simple structure. Alternatively, there may be at least two second parts, spaced apart, forming a second water passage between adjacent second parts to increase the water flow. Furthermore, the size of the second water passage can be adjusted during the design phase to achieve a flow-limiting effect.

[0026] 4. In Scheme 4 and its preferred embodiments, there are at least two first parts, each spaced apart; the second parts correspond one-to-one with the first parts, but are staggered to provide a stable flow-limiting effect. A first water passage is formed between adjacent first parts, and a second water passage is formed between adjacent second parts, which is connected to the first water passage, increasing the water flow. The flow-limiting effect can also be achieved by adjusting the size of the second and first water passages during the design phase.

[0027] 5. In Scheme 5 and its preferred embodiments, the main body also includes at least two limiting posts. The limiting posts are located downstream of the flow limiting posts, and a third water passage is formed between adjacent limiting posts. The third water passage is connected to the water passage gap to ensure water passage. The free end is adapted to abut against the limiting posts to limit further deformation and prevent damage caused by excessive deformation of the free end. The size of the third water passage and the size of the limiting posts can be adjusted during the design to achieve a further flow limiting effect.

[0028] 6. In Scheme 6 and its preferred embodiments, the main body is further provided with a first water outlet chamber, a second water outlet chamber, an air passage gap, and an acceleration hole;

[0029] The air gap connects the first water outlet chamber and the second water outlet chamber; the first water outlet chamber and the second water outlet chamber can share the air gap, making the structure simpler.

[0030] The water outlet of the acceleration hole is located near the air gap, which is suitable for accelerating the water flow to generate negative pressure at its water outlet. When the acceleration hole is connected to the first water outlet chamber, gas enters the first water outlet chamber through the water outlet of the second water outlet chamber and the air gap. Alternatively, when the acceleration hole is connected to the second water outlet chamber, gas enters the second water outlet chamber through the water outlet of the first water outlet chamber and the air gap. This achieves the effect of double-bubble water. The structure is simple, the user experience is good, and the air inlet is the water outlet of the first or second water outlet chamber. There is no additional air inlet on the surface, resulting in a better appearance.

[0031] 7. In Scheme 7 and its preferred embodiments, the main body includes a water outlet body and a switching component. The water outlet body is provided with a first water outlet chamber and a second water outlet chamber. The switching component is provided with an acceleration hole. An air gap is formed between the switching component and the water outlet body. The switching component is adapted to move relative to the water outlet body so that the acceleration hole communicates with the first water outlet chamber or the second water outlet chamber, so that the first water outlet chamber and the second water outlet chamber can share the acceleration hole, simplifying the product structure and achieving the corresponding switching effect.

[0032] 8. In Scheme 8 and its preferred embodiments, the switching component and the water outlet body are rotatably connected around the first axis. The first water outlet chamber is provided with a plurality of first water inlets arranged around the first axis, and the second water outlet chamber is provided with a plurality of second water inlets arranged around the first axis. The first water inlets and the second water inlets are adapted to communicate with the acceleration hole, and the first water inlets and the second water inlets are alternately arranged so that the corresponding switching can be achieved by rotating the switching component by a small angle. Furthermore, one first water inlet is adjacent to two second water inlets, and one second water inlet is adjacent to two first water inlets, which increases the air intake effect and makes the bubble water effect better.

[0033] 9. In Scheme 9 and its preferred embodiments, the switching component and the water outlet body are rotatably connected around the first axis. The first water outlet cavity is provided with a first water inlet end, and the second water outlet cavity is provided with a second water inlet end. The first water inlet end and the second water inlet end are adapted to communicate with the acceleration hole. The water outlet body is provided with a first inclined surface. The first water inlet end and the second water inlet end are provided on the first inclined surface. An air gap is formed between the first inclined surface and the switching component. The first inclined surface is a slope, which facilitates demolding during injection molding and is less likely to form burrs that damage the rotation of the switching component, making the rotation of the switching component smoother.

[0034] 10. In Scheme 10 and its preferred embodiments, the main body includes a filter surface and a descaling hole; the filter surface is provided with filter holes to block some impurities from passing through, the water inlet end of the descaling hole opens into the filter surface, the filter surface is inclined so that impurities on the filter surface are suitable to move toward the water inlet end of the descaling hole, so that the impurities move toward the descaling hole with the water flow, and the descaling rod is suitable to slide to seal or open the water inlet end of the descaling hole, thereby sealing the water inlet end of the descaling hole during normal water use to prevent water from flowing out of the descaling hole, and opening the water inlet end of the descaling hole to discharge impurities when descaling is required.

[0035] 11. In Scheme 11 and its preferred embodiments, a reset component is also included. The descaling rod is adapted to move under water pressure when water enters the water outlet device to seal the water inlet end of the descaling hole. At this time, the reset component stores energy. The reset component is adapted to release energy when the water outlet device stops water flow to drive the descaling rod to open the water inlet end of the descaling hole. When the water is stopped, the function of automatically removing impurities is realized, which is more convenient.

[0036] And / or the descaling rod has an operating end that is adapted to be pressed to drive the descaling rod to move away and open the water inlet of the descaling hole for manual removal of impurities. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a perspective view of the water outlet device in Example 1;

[0039] Figure 2 This is a bottom view of the water outlet device in Embodiment 1;

[0040] Figure 3 This is an exploded view of the water outlet device in Example 1;

[0041] Figure 4 This is a perspective view of the switching component in Embodiment 1;

[0042] Figure 5 This is a perspective view of the switching component in Embodiment 1 from another angle;

[0043] Figure 6 This is a schematic diagram showing the first water inlet end connected to the acceleration hole in Embodiment 1;

[0044] Figure 7 This is a schematic diagram of air intake at the second water inlet when the first water inlet is connected to the acceleration hole in Embodiment 1.

[0045] Figure 8 This is a schematic diagram of the water passage structure when the first water inlet is connected to the acceleration hole in Embodiment 1;

[0046] Figure 9 This is a schematic diagram of the air intake path when the first water inlet is connected to the acceleration hole in Embodiment 1;

[0047] Figure 10 This is a schematic diagram showing the second water inlet end connected to the acceleration hole in Embodiment 1;

[0048] Figure 11 This is a schematic diagram of air intake at the first water inlet when the second water inlet is connected to the acceleration hole in Embodiment 1.

[0049] Figure 12 This is a schematic diagram of the water passage structure when the second water inlet is connected to the acceleration hole in Embodiment 1;

[0050] Figure 13 This is a schematic diagram of the air intake path when the second water inlet is connected to the acceleration hole in Embodiment 1;

[0051] Figure 14This is another configuration of the first and second water inlets in Embodiment 1;

[0052] Figure 15 This is a schematic diagram of the low pressure when both the first and second parts are cylindrical in Example 1;

[0053] Figure 16 This is a schematic diagram of the medium pressure when both the first and second parts are cylindrical in Example 1;

[0054] Figure 17 This is a schematic diagram of the high pressure when both the first and second parts are cylindrical in Example 1;

[0055] Figure 18 This is a schematic diagram of the low pressure when the first part is frustum-shaped and the second part is cylindrical in Example 1;

[0056] Figure 19 This is a schematic diagram of the medium pressure when the first part is frustum-shaped and the second part is cylindrical in Example 1;

[0057] Figure 20 This is a schematic diagram of high pressure when the first part is frustum-shaped and the second part is cylindrical in Example 1;

[0058] Figure 21 This is a schematic diagram of the descaling rod blocking the descaling hole in Example 1;

[0059] Figure 22 This is a schematic diagram of the descaling rod with open descaling holes in Example 1;

[0060] Explanation of key figure labels:

[0061] Body 10; Outer shell 1; Switching component 2; Water passage chamber 21; Inlet 211; Acceleration hole 212; Flow limiting column 213; First part 2131; Second part 2132; Limiting column 214; Third water passage 215; Second through hole 216; Filter screen 3; Filter surface 31; Filter hole 311; Descaling hole 32; Water outlet 4; Water spreader 41; Sealing surface 411; First inclined surface 412; First inlet end 4121; Second Water inlet end 4122; First surface 413; First inner water channel 414; First outer water channel 415; Water outlet net 42; Second inner water channel 421; Second outer water channel 422; First through hole 423; First water outlet cavity 43; Second water outlet cavity 44; Flow limiting element 20; Fixed end 201; Free end 202; Descaling rod 30; Operating end 301; Reset element 40; First axis 50; Air passage gap 60; Water passage gap 70; Detailed Implementation

[0062] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0063] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0064] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of the invention.

[0065] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0066] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0067] refer to Figures 1-22 A water outlet device includes a body 10, a flow restrictor 20, a descaling rod 30, and a reset component 40.

[0068] The main body 10 includes a shell 1, a switching component 2, a filter screen 3, and a water outlet 4.

[0069] refer to Figure 3 The outer shell 1 is a hollow cylindrical shape, and the switching component 2, filter screen 3 and water outlet 4 are installed inside the outer shell 1.

[0070] refer to Figure 3 , Figure 11 , Figure 12The water outlet body 4 includes a water distribution plate 41 and a water outlet net 42 arranged sequentially from top to bottom, in this embodiment. The water distribution plate 41 and the water outlet net 42 are elastically snapped together as one unit.

[0071] refer to Figure 11 The water diffuser 41 is located on the outer casing 1. The water diffuser 41 has an annular wall, and the top surface of the annular wall is provided with a sitting surface 411 and a first inclined surface 412. The first inclined surface 412 is provided with a first water inlet end 4121. Figure 11 (Square) and second inlet 4122 ( Figure 11 The switching element 2 is a triangular structure. A first water inlet 4121 has several inlets arranged around a first axis 50, and a second water inlet 4122 has several inlets also arranged around the first axis 50. The distance from the first water inlet 4121 to the first axis 50 is equal to the distance from the second water inlet 4122 to the first axis 50, and the first and second water inlets 4121 are alternately arranged. The first axis 50 is the rotation axis of the switching element 2. One end of the first inclined surface 412 is connected to the sitting surface 411, and the other end gradually slopes downwards along a direction close to the first axis 50. (Reference) Figure 14 In other embodiments, a first surface 413 parallel to the landing surface 411 may also be provided. The first surface 413 is provided with a first water inlet 4121 and a second water inlet 4122, and the first surface 413 is located below the landing surface 411. Specifically, there is a sidewall connected to the annular wall between the first water inlet 4121 and the second water inlet 4122. The end of the sidewall near the switching member 2 forms the first surface 413, and an air gap 60 is formed between the first surface 413 and the switching member 2. The first surface 413 is a plane perpendicular to the annular wall.

[0072] refer to Figure 8 , Figure 12 The inner side of the annular wall is also provided with a first inner water channel 414 and a first outer water channel 415. The first inner water channel 414 is connected to the first water inlet 4121, and the second outer water channel 422 is connected to the second water inlet 4122. The middle part of the water diffuser 41 has a through hole for the installation of the switching component 2.

[0073] refer to Figure 8 , Figure 12 The water outlet net 42 is provided with a second inner water channel 421 and a second outer water channel 422. The middle part of the water outlet net 42 is also provided with a first through hole 423. The first through hole 423 runs through the water outlet net 42 in the vertical direction and is used for the descaling rod 30 to pass through.

[0074] refer to Figure 12When the water outlet net 42 and the water distribution plate 41 are installed together through an elastic convex bulge and grooves that cooperate with the elastic convex bulge (multiple grooves can be provided and distributed on the inner and outer sides), the two are fixed to each other, and the water outlet net 42 abuts upward against the outer shell 1. The inlet end of the second inner water channel 421 is connected to the outlet end of the first inner water channel 414. Water flows through the first inlet end 4121, the first inner water channel 414, and the second inner water channel 421 in sequence to form the first water outlet cavity 43. The inlet end of the second outer water channel 422 is connected to the outlet end of the first outer water channel 415. Water flows through the second inlet end 4122, the first outer water channel 415, and the second outer water channel 422 in sequence to form the second water outlet cavity 44. The outlet end of the inner water channel, which is the final water outlet cavity, is located in the middle, while the water outlet cavity formed by the outer water channel surrounds the aforementioned outer side.

[0075] refer to Figure 12 The switching element 2 is located on the water outlet body 4 and is engaged with the water outlet body 4 via an elastic buckle. In this embodiment, the switching element 2 is located on the sitting surface 411 and is engaged with the water distribution plate 41 via an elastic buckle. Specifically, the elastic buckle protrudes outward and is adapted to deform. After passing through the through hole in the middle of the water distribution plate 41, it returns to its original position and abuts against the water distribution plate 41 upward, thus achieving engagement and allowing the switching element 2 to rotate relative to the water outlet body 4. (Reference) Figure 12 The elastic buckle of the switching component 2 is also provided with a second through hole 216. After assembly, the second through hole 216 communicates with the first through hole 423 for installing the reset component 40 and for the descaling rod 30 to pass through. Furthermore, an air gap 60 is formed between the switching component 2 and the first inclined surface 412 of the water outlet body 4. The air gap 60 connects the first water inlet end 4121 of the first water outlet chamber 43 and the second water inlet end 4122 of the second water outlet chamber 44.

[0076] refer to Figure 4 , Figure 5 and Figure 12 The switching component 2 includes a main body with a water passage cavity 21. The water passage cavity 21 has an inlet 211 and an outlet. In this embodiment, the outlet is an acceleration hole 212, and there are eight acceleration holes 212 arranged around the first axis 50. In other embodiments, the outlet can be the outlet end of the entire water outlet device and does not have an acceleration function. The outlet end of the acceleration hole 212 is located near the air gap 60 and is adapted to accelerate the water flow to generate negative pressure at its outlet end. The switching component 2 is adapted to move relative to the water outlet body 4 so that the acceleration hole 212 communicates with the first inlet end 4121 of the first water outlet cavity 43 or the second inlet end 4122 of the second water outlet cavity 44. In this embodiment, the switching component 2 and the water outlet body 4 are rotatably connected around the first axis 50 to realize the switching of the water path. Reference Figures 6-9When the acceleration hole 212 is connected to the first water outlet chamber 43, gas enters the first water outlet chamber 43 through the water outlet end of the second water outlet chamber 44 and the air gap 60, mixing with the water in the first water outlet chamber 43 to form bubble water. Figures 10-13 When the acceleration hole 212 is connected to the second water outlet chamber 44, the gas enters the second water outlet chamber 44 through the water outlet end of the first water outlet chamber 43 and the air gap 60, and mixes with the water in the second water outlet chamber 44 to form bubble water. The acceleration hole 212 can be set as a tapered section along the water flow direction, or it can be set as a micropore to achieve the acceleration effect.

[0077] refer to Figure 5 , Figures 15-20 The switching component 2 is provided with a flow-limiting column 213, which protrudes from the cavity wall of the water passage cavity 21. The flow-limiting column 213 includes at least a first part 2131 and a second part 2132 disposed downstream of the first part 2131. The size of the second part 2132 (the size along the direction perpendicular to the first axis 50) is larger than the size of the first part 2131. When the flow-limiting column 213 is formed on the inner side wall of the main body, the first part 2131 and the second part 2132 protrude toward the first axis 50, and the outer edge of the second part 2132 is closer to the first axis 50 than the outer edge of the first part 2131. When the flow-limiting column 213 is formed in the middle of the main body, the first part 2131 and the second part 2132 protrude away from the first axis 50, and the outer edge of the second part 2132 is farther away from the first axis 50 than the outer edge of the first part 2131 (e.g., Figure 5 (As shown). The first part 2131 is annular, or there are at least two first parts 2131, each first part 2131 is spaced apart around the central axis of the switching member 2, and a first water passage is formed between adjacent first parts 2131. The second part 2132 is annular, or there are at least two second parts 2132, each second part 2132 is spaced apart around the central axis of the switching member 2, and a second water passage is formed between adjacent second parts 2132. When there are multiple second parts 2132 and first parts 2131, the second parts 2132 are arranged in a one-to-one correspondence with the first parts 2131, and one second part 2132 is connected to one first part 2131.

[0078] refer to Figure 5 In this embodiment, both the first part 2131 and the second part 2132 are annular, and both the first part 2131 and the second part 2132 can be cylindrical, or the first part 2131 can be frustum-shaped and the second part 2132 can be cylindrical. In other embodiments, the first part 2131 and the second part 2132 can also be cuboids.

[0079] The switching component 2 also includes at least two central axis limiting posts 214 surrounding the main body. The limiting posts 214 are located downstream of the flow-limiting posts 213. In this embodiment, there are multiple limiting posts 214, which surround the outer periphery of the second part 2132. The limiting posts 214 protrude radially from the second part 2132 and protrude from the bottom wall of the switching component 2, and their height is lower than the height of the second part 2132. A third water passage 215 is formed between adjacent limiting posts 214, and the third water passage 215 communicates with the water passage gap 70.

[0080] refer to Figure 2 , Figure 12 In this embodiment, the current limiting element 20 is annular. The current limiting element 20 includes a fixed end 201 and a free end 202. The fixed end 201 is fixed relative to the body 10. In this embodiment, reference... Figure 12 The fixed end 201 of the flow restrictor 20 is fixed by the filter screen 3 and the switching element 2. The fixed end 201 is located on the flow restrictor 20, the filter screen 3 is located in the water passage cavity 21, the filter element is elastically engaged with the flow restrictor 20 and abuts against the fixed end 201, so that the two ends of the fixed end 201 are respectively clamped by the filter screen 3 and the switching element 2.

[0081] In this embodiment, the free end 202 and the fixed end 201 are arranged in a direction perpendicular to the first axis 50, and the fixed end 201 is farther away from the first axis 50 relative to the free end 202. However, in other embodiments, the fixed end 201 may be closer to the first axis 50 relative to the free end 202, and the free end 202 is adapted to abut against the limiting post 214 to limit further deformation. (See reference...) Figures 15-20 The flow-limiting column 213 is located on the side of the free end 202 away from the fixed end 201. For example, the fixed end 201, the free end 202 and the flow-limiting column 213 are arranged in sequence from the inside to the outside, or from the outside to the inside.

[0082] A water passage gap 70 is formed between the free end 202 and the flow-limiting column 213, connecting the inlet 211 and the acceleration hole 212. The free end 202 of the flow-limiting member 20 is adapted to deform from a first position corresponding to the first part 2131 to a second position corresponding to the second part 2132 when the inlet water pressure increases, so as to reduce the water passage area of ​​the water passage gap 70. (Reference) Figures 15-17 ,or Figures 18-20The first distance L1 is the distance between the free end 202 and the end of the first part 2131, the second distance L2 is the distance between the bottom wall of the flow restrictor 20 and the cavity wall of the water passage cavity 21, and the third distance L3 is the distance between the free end 202 and the end of the second part 2132. Initially, the flow restrictor 20 is in the first position. When the water pressure is 0.1-0.2 MPa (low pressure), the flow restrictor 20 deforms slightly under the water pressure, and the second distance L2 deforms slightly. At this time, the water passage gap 70 between the flow restrictor 20 and the first part 2131 is at its minimum, controlling the flow rate at 0.1-0.2 MPa. When the water pressure is 0.2-0.4 MPa (medium pressure), the flow restrictor 20 deforms to the middle position under the water pressure, and the second distance L2 shrinks to the top of the second part 2132 (or the bottom of the first part 2131). At this time, the water passage gap 70 between the flow restrictor 20 and the top of the second part 2132 (or the bottom of the first part 2131) is at its minimum, controlling the flow rate at 0.2-0.4 MPa. In the current state, the distance between the free end of the flow restrictor 20 and the flow restrictor column 213 remains at the first distance L1. When the water pressure is 0.4-0.6 MPa (high pressure), the flow restrictor 20 continues to deform downward to the second position. At this time, part of the flow restrictor 20 shrinks from the first distance L1 to the third distance L3, and the second distance L2 shrinks to the downstream of the top of the second part 2132. The flow restrictor 20 deforms above the limiting column 214 and downstream of the top of the second part 2132. Alternatively, the flow restrictor 20 deforms under the action of water pressure and abuts against the limiting column 214. At this time, the second distance L2 is the smallest, and the water passage gap 70 between the flow restrictor 20 and the second part 2132 is the smallest, controlling the flow rate of 0.4-0.6 MPa and realizing three-stage flow control and constant flow. In other embodiments, when the water pressure is 0.4-0.6 MPa (high pressure), the flow restrictor 20 is reduced from the first distance L1 to the third distance L3, and the flow restrictor 20 is deformed above the limiting post 214 and downstream of the top of the second part 2132.

[0083] In existing technologies, since the size of the flow-limiting surface remains unchanged, the flow rate will increase linearly or abruptly when the water pressure increases. Although there is a certain flow-limiting effect, it is not significant. In this embodiment, the flow-limiting column 213 includes at least a first part 2131 and a second part 2132 disposed downstream of the first part 2131. The size of the second part 2132 (the size along the direction perpendicular to the first axis 50) is larger than the size of the first part 2131. Therefore, under different water pressures, multi-stage flow control can be achieved, making the flow rate slow down or increase slowly horizontally (or remain horizontally constant).

[0084] refer to Figure 1 , Figure 12The filter screen 3 is elastically engaged with the switching component 2. The filter screen 3 has a filter surface 31 and a descaling hole 32. The water inlet of the descaling hole 32 is located on the filter surface 31, and the water outlet of the descaling hole 32 is adapted to communicate with the outside. The filter surface 31 has filter holes 311. The filter surface 31 is inclined so that impurities on the filter surface 31 can move towards the water inlet of the descaling hole 32. In this embodiment, the filter surface 31 gradually slopes downward along the direction close to the first axis 50. The descaling hole 32 communicates with the first through hole 423 and the second through hole 216 to form a sewage discharge channel for installing the reset component 40 and for the descaling rod 30 to pass through.

[0085] refer to Figure 12 , Figure 21 and Figure 22 The descaling rod 30 has a sealing portion at its top for sealing the descaling hole 32. This sealing portion is disposed outside the descaling hole 32. The descaling rod 30 is adapted to slide so that the sealing portion seals or opens the water inlet end of the descaling hole 32. Specifically, in this embodiment, the descaling rod 30 seals the water inlet end of the descaling hole 32 by water pressure. When water enters through the inlet 211, the descaling rod 30 moves under the action of water pressure to seal the water inlet end of the descaling hole 32. The descaling rod 30 has an operating end 301, which passes through the first through hole 423 and the second through hole 216 to protrude from the body 10. The operating end 301 is adapted to be pressed to drive the descaling rod 30 to move away and open the water inlet end of the descaling hole 32.

[0086] Optionally, the descaling rod 30 can also be reset by a reset member 40. The reset member 40 is installed in the second through hole 216. The two ends of the reset member 40 act on the second through hole 216 of the body 10 and the descaling rod 30. When the descaling rod 30 moves under water pressure to seal the water inlet end of the descaling hole 32, the reset member 40 stores energy. The reset member 40 is adapted to release energy when the water outlet device stops water flow, so as to drive the descaling rod 30 to open the water inlet end of the descaling hole 32 to discharge dirt. The reset member 40 is a spring.

[0087] During installation, refer to Figure 12 The water distribution plate 41 and the water outlet screen 42 are inserted into the outer casing 1 from both ends until they are snapped together and assembled as one unit. The water distribution plate 41 and the outer casing 1 are anti-rotationally engaged by anti-rotation protrusions and anti-rotation grooves. Then, the switching component 2 is snapped into the water distribution plate 41 and the flow limiting component 20 is installed. The filter screen 3 is elastically snapped into the switching component 2 to fix the flow limiting component 20. Finally, the reset component 40 and the descaling rod 30 are installed.

[0088] When using, refer to Figures 6-9 , Figure 12Taking the water outlet of the first water outlet chamber 43 as an example, water enters the water passage chamber 21 through the water inlet 211, and after being limited by the water passage gap 70 between the flow limiting component 20 and the switching component 2, it reaches the acceleration hole 212 and enters each first water inlet end 4121. The water flows out through the acceleration hole 212. The water outlet area of ​​the water outlet end of the first water outlet chamber 43 and the second water outlet chamber 44 is 2.5 times to 10 times the water outlet area of ​​the acceleration hole 212, which conforms to the Venturi principle and can realize bidirectional air intake.

[0089] Due to the high-speed water flow at the acceleration hole 212, a negative pressure is generated at the air gap 60 according to Bernoulli's principle. Gas enters the second water outlet chamber 44 from the outlet end and then enters the first water inlet 4121 from the two adjacent second water inlets 4122, mixing with the water to produce bubble water, which finally flows out from the outlet end of the first water outlet chamber 43. (Reference) Figures 10-13 By rotating the switching component 2 or the water outlet 4, water enters the acceleration hole 212 and the second water inlet 4122. At the same time, similarly, gas enters from the water outlet of the first water outlet chamber 43 and enters the second water inlet 4122 from the two first water inlets 4121 adjacent to each second water inlet 4122, mixing with water to produce bubble water.

[0090] During use, refer to Figure 21 , Figure 22 The descaling rod 30 moves under water pressure to seal the inlet end of the descaling hole 32. Impurities are intercepted by the filter screen 3 and move towards the descaling hole 32 under the action of the inclined surface of the filter surface 31, and are blocked by the descaling rod 30. When the water is turned off (in the case of having a reset element 40) or the descaling rod 30 is manually pushed, the descaling rod 30 opens the inlet end of the descaling hole 32. Impurities flow into the inlet end of the descaling hole 32 along with the residual water and are discharged out of the water outlet device.

[0091] refer to Figures 15-20 When the inlet water pressure increases or decreases, the flow rate changes slowly or remains constant due to the cooperation between the flow restrictor 20 and the flow restrictor column 213 with different sizes.

[0092] Compared with the prior art, this embodiment has the following beneficial effects:

[0093] In one exemplary embodiment, a water outlet device includes...

[0094] The main body 10 is provided with a water passage cavity 21 and a flow limiting column 213. The water passage cavity 21 is provided with an inlet 211 and an outlet. The flow limiting column 213 protrudes from the cavity wall of the water passage cavity 21. The flow limiting column 213 includes at least a first part 2131 and a second part 2132 disposed downstream of the first part 2131. The size of the second part 2132 is larger than the size of the first part 2131.

[0095] The flow restrictor 20 includes a fixed end 201 and a free end 202. The fixed end 201 is fixed relative to the main body 10, and the flow restrictor column 213 is located on the side of the free end 202 away from the fixed end 201. A water passage gap 70 is formed between the free end 202 and the flow restrictor column 213, connecting the inlet 211 and the outlet. The free end 202 is adapted to deform from a first position corresponding to the first part 2131 to a second position corresponding to the second part 2132 when the inlet water pressure increases, so as to reduce the water passage area of ​​the water passage gap 70 and achieve flow control. In the prior art, since the size of the flow restrictor surface does not change, the flow rate will increase linearly or abruptly when the water pressure increases. Although there is a certain flow restriction effect, it is not obvious. This embodiment uses a flow-limiting column 213, which includes at least a first part 2131 and a second part 2132 located downstream of the first part 2131. The size of the second part 2132 (the size along the direction perpendicular to the first axis 50) is larger than the size of the first part 2131. This allows for multi-stage flow control under different water pressures, resulting in a slower flow rate or a gradual increase in flow (or a constant flow). The sizes of the first part 2131 and the second part 2132 can be adjusted during the design phase, and a size with better flow-limiting effect can be obtained through experiments.

[0096] In one exemplary embodiment, the first part 2131 is annular, with a simple structure. Alternatively, there may be at least two first parts 2131, each spaced apart, forming a first water passage between adjacent first parts 2131 to increase the water flow. Furthermore, the flow can be limited by adjusting the size of the first water passage during the design phase.

[0097] In one exemplary embodiment, the second part 2132 is annular, with a simple structure. Alternatively, there may be at least two second parts 2132, spaced apart, forming a second water passage between adjacent second parts 2132 to increase the water flow. Furthermore, the flow restriction function can be achieved by adjusting the size of the second water passage during the design phase.

[0098] In one exemplary embodiment, there are at least two first parts 2131, each spaced apart; the second parts 2132 correspond one-to-one with the first parts 2131, but are staggered to provide a stable flow-limiting effect. A first water passage is formed between adjacent first parts 2131, and a second water passage, connected to the first water passage, is formed between adjacent second parts 2132, increasing the water flow. Furthermore, the flow-limiting effect can be achieved by adjusting the size of the second and first water passages during the design phase.

[0099] In one exemplary embodiment, the body 10 further includes at least two limiting posts 214. The limiting posts 214 are located downstream of the flow-limiting posts 213. A third water passage 215 is formed between adjacent limiting posts 214 to ensure water passage. The third water passage 215 is connected to the water passage gap 70. The free end 202 is adapted to abut against the limiting posts 214 to limit further deformation and prevent excessive deformation of the free end 202 from causing damage. The size of the third water passage 215 and the size of the limiting posts 214 can be adjusted during the design to achieve a further flow-limiting effect.

[0100] In one exemplary embodiment, the body 10 is further provided with a first water outlet chamber 43, a second water outlet chamber 44, an air passage gap 60, and an acceleration hole 212;

[0101] The air gap 60 connects the first water outlet chamber 43 and the second water outlet chamber 44; the first water outlet chamber 43 and the second water outlet chamber 44 can share the air gap 60, making the structure simpler.

[0102] The water outlet of the acceleration hole 212 is located near the air gap 60. It is suitable for accelerating the water flow to generate negative pressure at its water outlet. When the acceleration hole 212 is connected to the first water outlet chamber 43, gas enters the first water outlet chamber 43 through the water outlet of the second water outlet chamber 44 and the air gap 60. Alternatively, when the acceleration hole 212 is connected to the second water outlet chamber 44, gas enters the second water outlet chamber 44 through the water outlet of the first water outlet chamber 43 and the air gap 60. This achieves the effect of double-bubble water. The structure is simple, the user experience is good, and the air inlet is the water outlet of the first water outlet chamber 43 or the second water outlet chamber 44. There is no additional air inlet on the surface, resulting in a better appearance.

[0103] In one exemplary embodiment, the main body 10 includes a water outlet body 4 and a switching component 2. The water outlet body 4 is provided with a first water outlet cavity 43 and a second water outlet cavity 44. The switching component 2 is provided with an acceleration hole 212. An air gap 60 is formed between the switching component 2 and the water outlet body 4. The switching component 2 is adapted to move relative to the water outlet body 4 so that the acceleration hole 212 communicates with the first water outlet cavity 43 or the second water outlet cavity 44, so that the first water outlet cavity 43 and the second water outlet cavity 44 can share the acceleration hole 212, simplifying the product structure and achieving the corresponding switching effect.

[0104] In one exemplary embodiment, the switching element 2 is rotatably connected to the water outlet body 4 around the first axis 50. The first water outlet cavity 43 is provided with a plurality of first water inlets 4121 arranged around the first axis 50, and the second water outlet cavity 44 is provided with a plurality of second water inlets 4122 arranged around the first axis 50. The first water inlets 4121 and the second water inlets 4122 are adapted to communicate with the acceleration hole 212. The first water inlets 4121 and the second water inlets 4122 are alternately arranged so that the corresponding switching can be achieved by rotating the switching element 2 by a small angle. Furthermore, one first water inlet 4121 is adjacent to two second water inlets 4122, and one second water inlet is adjacent to two first water inlets 4121, which increases the air intake effect and makes the bubble water effect better.

[0105] In one exemplary embodiment, the switching component 2 is rotatably connected to the water outlet body 4 around the first axis 50. The first water outlet cavity 43 is provided with a first water inlet end 4121, and the second water outlet cavity 44 is provided with a second water inlet end 4122. The first water inlet end 4121 and the second water inlet end 4122 are adapted to communicate with the acceleration hole 212. The water outlet body 4 is provided with a first inclined surface 412. The first water inlet end 4121 and the second water inlet end 4122 are provided on the first inclined surface 412. An air gap 60 is formed between the first inclined surface 412 and the switching component 2. The first inclined surface 412 is an inclined surface, which facilitates demolding during injection molding and is less likely to form burrs that damage the rotation of the switching component 2, making the rotation of the switching component 2 smoother.

[0106] In one exemplary embodiment, the body 10 includes a filter surface 31 and a descaling hole 32. The filter surface 31 is provided with filter holes 311 to block some impurities from passing through. The water inlet end of the descaling hole 32 opens into the filter surface 31. The filter surface 31 is inclined so that impurities on the filter surface 31 are suitable to move towards the water inlet end of the descaling hole 32, so that the impurities approach the descaling hole 32 with the water flow. The descaling rod 30 is adapted to slide to seal or open the water inlet end of the descaling hole 32, thereby sealing the water inlet end of the descaling hole 32 during normal water use to prevent water from flowing out of the descaling hole 32. When descaling is required, the water inlet end of the descaling hole 32 is opened to discharge impurities.

[0107] In one exemplary embodiment, a reset member 40 is also included. The descaling rod 30 is adapted to move under water pressure when water enters the water outlet device to seal the water inlet end of the descaling hole 32. At this time, the reset member 40 stores energy. The reset member 40 is adapted to release energy when the water outlet device stops water flow to drive the descaling rod 30 to open the water inlet end of the descaling hole 32. When the water is stopped, the function of automatically removing impurities is realized, which is more convenient.

[0108] And / or the descaling rod 30 has an operating end 301, which is adapted to be pressed to drive the descaling rod 30 to move away and open the water inlet end of the descaling hole 32 for manual removal of impurities.

[0109] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. A water outlet device, characterized in that: include The body (10) is provided with a water passage cavity (21) and a flow-limiting column (213). The water passage cavity (21) is provided with an inlet (211) and an outlet. The flow-limiting column (213) protrudes from the cavity wall of the water passage cavity (21). The flow-limiting column (213) includes at least a first part (2131) and a second part (2132) disposed downstream of the first part (2131). The size of the second part (2132) is larger than the size of the first part (2131). A flow restrictor (20) includes a fixed end (201) and a free end (202). The fixed end (201) is fixed relative to the body (10), and the flow restrictor (213) is located on the side of the free end (202) away from the fixed end (201). A water passage gap (70) is formed between the free end (202) and the flow restrictor (213) to connect the inlet (211) and the outlet. The free end (202) is adapted to deform from a first position corresponding to the first part (2131) to a second position corresponding to the second part (2132) when the inlet water pressure increases, so as to reduce the water passage area of ​​the water passage gap (70).

2. The water outlet device as described in claim 1, characterized in that: The first part (2131) is annular, or there are at least two first parts (2131), each of the first parts (2131) is arranged at intervals around the central axis of the body (10), and a first water passage is formed between adjacent first parts (2131).

3. The water outlet device as described in claim 1, characterized in that: The second part (2132) is annular, or there are at least two second parts (2132), each second part (2132) is arranged at intervals around the central axis of the body (10), and a second water passage is formed between adjacent second parts (2132).

4. The water outlet device as described in claim 1, characterized in that: The first part (2131) has at least two parts, and each first part (2131) is spaced apart around the central axis of the body (10); the second part (2132) corresponds to the first part (2131) one by one, and a first water passage is formed between adjacent first parts (2131), and a second water passage communicating with the first water passage is formed between adjacent second parts (2132).

5. A water outlet device as described in claim 1, characterized in that: The body (10) also includes at least two limiting posts (214) arranged around the central axis of the body (10). The limiting posts (214) are located downstream of the flow limiting post (213). A third water passage (215) is formed between adjacent limiting posts (214). The third water passage (215) is connected to the water passage gap (70). The free end (202) is adapted to abut against the limiting post (214) to limit further deformation.

6. A water outlet device as described in claim 1, characterized in that: The main body (10) is also provided with a first water outlet chamber (43), a second water outlet chamber (44), an air passage gap (60) and an acceleration hole (212); The air gap (60) connects the first water outlet chamber (43) and the second water outlet chamber (44); The water outlet end of the acceleration hole (212) is located near the air gap (60), which is adapted to accelerate the water flow to generate negative pressure at its water outlet end, so that when the acceleration hole (212) is connected to the first water outlet chamber (43), the gas enters the first water outlet chamber (43) through the water outlet end of the second water outlet chamber (44) and the air gap (60), or when the acceleration hole (212) is connected to the second water outlet chamber (44), the gas enters the second water outlet chamber (44) through the water outlet end of the first water outlet chamber (43) and the air gap (60).

7. A water outlet device as described in claim 6, characterized in that: The main body (10) includes a water outlet (4) and a switching component (2). The water outlet (4) is provided with a first water outlet cavity (43) and a second water outlet cavity (44). The switching component (2) is provided with an acceleration hole (212). An air gap (60) is formed between the switching component (2) and the water outlet (4). The switching component (2) is adapted to move relative to the water outlet (4) so ​​that the acceleration hole (212) communicates with the first water outlet cavity (43) or the second water outlet cavity (44).

8. A water outlet device as described in claim 7, characterized in that: The switching component (2) is rotatably connected to the water outlet body (4) around the first axis (50). The first water outlet cavity (43) is provided with a plurality of first water inlets (4121) arranged around the first axis (50). The second water outlet cavity (44) is provided with a plurality of second water inlets (4122) arranged around the first axis (50). The first water inlets (4121) and the second water inlets (4122) are adapted to communicate with the acceleration hole (212), and the first water inlets (4121) and the second water inlets (4122) are alternately arranged.

9. A water outlet device as described in claim 7, characterized in that: The switching component (2) is rotatably connected to the water outlet body (4) around the first axis (50). The first water outlet chamber (43) is provided with a first water inlet end (4121), and the second water outlet chamber (44) is provided with a second water inlet end (4122). The first water inlet end (4121) and the second water inlet end (4122) are adapted to communicate with the acceleration hole (212). The water outlet body (4) is provided with a first inclined surface (412). The first water inlet end (4121) and the second water inlet end (4122) are provided on the first inclined surface (412). The air passage gap (60) is formed between the first inclined surface (412) and the switching component (2).

10. A water outlet device as described in claim 1, characterized in that: It also includes a descaling rod (30), the body (10) includes a filter surface (31) and a descaling hole (32); the water inlet opening of the descaling hole (32) is provided on the filter surface (31), the filter surface (31) is provided with a filter hole (311), the filter surface (31) is inclined so that the impurities on the filter surface (31) are suitable to move to the water inlet of the descaling hole (32), and the descaling rod (30) is adapted to slide to seal or open the water inlet of the descaling hole (32).

11. A water outlet device as described in claim 10, characterized in that: It also includes a reset member (40), the descaling rod (30) is adapted to move under water pressure when water enters the water outlet device to seal the water inlet end of the descaling hole (32), at which time the reset member (40) stores energy; the reset member (40) is adapted to release energy when the water outlet device stops water flow to drive the descaling rod (30) to open the water inlet end of the descaling hole (32) and / or the descaling rod (30) is adapted to move under water pressure when water enters the water outlet device to seal the water inlet end of the descaling hole (32), the descaling rod (30) has an operating end (301), the operating end (301) is adapted to be pressed to drive the descaling rod (30) to move away from the device and open the water inlet end of the descaling hole (32).

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