Flow controller

Abstract

The utility model discloses a flow controller which comprises a base and an elastic piece embedded in the base. A flow passing groove is formed in the base, a supporting part is arranged on the flow passing groove, and a flow limiting hole is formed in the flow passing groove; the elastic piece abuts against the supporting part and forms a flow passing channel with the bottom wall of the flow passing groove, and a water inlet of the flow passing groove is communicated with the flow limiting hole through the flow passing channel. In the axial direction of the base, the projection area of the elastic piece covers the projection area of the flow limiting hole. According to the utility model, flow control is realized, the production difficulty of the elastic sheet can be reduced, and the product yield is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bathroom, especially point to flow controller. BACKGROUND

[0002] The internal of the water faucet, shower or bubbler and other bathroom water products on the market usually has a flow controller, and the main role of the flow controller is that when the water pressure reaches a certain degree, the water flow will not change significantly with the increase of the water pressure, so that the water flow remains basically constant, thus ensuring that the water flow of the water product is basically the same under different water pressure conditions, making the water effect of the water product stable and ensuring water saving and comfort.

[0003] For example, a flow controller and a bubbler are disclosed in Chinese patent document (publication number CN211436641U), wherein the sheet-shaped body has legs produced by bending the sheet-shaped body, and the leg height of the sheet-shaped body has a great influence on the performance of the product, so the production difficulty of the sheet-shaped body is great, and the yield is low. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to provide a flow controller that reduces production difficulty and ensures stable product performance.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] The flow controller comprises a base and an elastic sheet embedded in the base.

[0007] The base has a flow passage, and a support portion is arranged around the flow passage, and a flow limiting hole for communication with the outside is formed in the flow passage.

[0008] The elastic sheet is pressed against the support portion, a flow passage is formed between the bottom surface of the elastic sheet and the bottom wall of the flow passage, a gap for water flow is formed between the edge of the elastic sheet and the side wall of the base, and the gap is communicated with the flow limiting hole through the flow passage.

[0009] In the axial direction of the base, the projection area of the elastic sheet covers the projection area of the flow limiting hole.

[0010] Further, the cross-sectional area of the flow limiting hole is less than one fifth of the cross-sectional area of the water inlet of the base.

[0011] Further, the support portion is an annular boss.

[0012] Further, the thickness of the elastic sheet is less than 1mm.

[0013] Further, the edge of the elastic sheet has at least two notches, and the notches and the sidewall of the base form the gap.

[0014] Further, the over-flow channel has a first distance between the elastic sheet and the base in the axial direction of the base.

[0015] In the radial direction of the base, the maximum value of the gap is at least twice the maximum value of the first distance.

[0016] Further, the inner wall of the over-flow channel has a limiting protruding lip which is arranged around and extends towards the center of the flow controller, and the limiting protruding lip is located at one end of the over-flow channel away from the flow limiting hole, and the diameter of the limiting protruding lip is smaller than the maximum diameter of the elastic sheet.

[0017] Further, the edge of the elastic sheet is provided with an extension, and the extension is located in the gap.

[0018] Further, the middle part of the elastic sheet is provided with a water passing hole.

[0019] Further, the edge of the elastic sheet has at least four uniformly distributed notches, two of the notches are symmetrically arranged and provided with a first extension, and the remaining notches are symmetrically arranged and provided with a second extension, and the first extension and the second extension are located in the gap.

[0020] In the axial direction of the base, the projection area of the first extension is greater than the projection area of the second extension.

[0021] The beneficial effects of the utility model lie in that: through the arrangement of the supporting part, an over-flow channel is formed between the elastic sheet and the bottom wall of the over-flow channel, so as to replace the supporting leg of the elastic sheet in the prior art. In the utility model, when the elastic sheet is impacted by water flow, the elastic sheet will be concave towards the side where the flow limiting hole is located, so that the height of the over-flow channel is reduced and the water passing area of the over-flow channel is reduced. With the gradual increase of the water pressure of the front end water inlet, the concave degree of the elastic sheet gradually increases, so that the height of the over-flow channel gradually decreases. The water pressure increase amount and the height decrease amount of the over-flow channel of the front end water inlet are proportional, the water pressure increase causes the flow rate of the water flow passing through the over-flow channel to increase, and the height decrease of the over-flow channel causes the water passing area to decrease, so that the output water flow remains basically constant and does not increase synchronously with the increase of the water pressure of the front end water inlet, so that the effect of stable flow is realized. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure diagram of the flow controller in the utility model Figure 1 ;

[0023] Figure 2 It is a structure diagram of the flow controller in the utility model Figure 2;

[0024] Figure 3 is a top view of the flow controller in the embodiment one of the utility model; Figure 1 is a top view of the flow controller in the embodiment one of the utility model;

[0025] Figure 4 is a sectional view of A-A part in the embodiment one of the utility model; Figure 3 Figure 1 ;

[0026] Figure 5 is a sectional view of A-A part in the embodiment one of the utility model; Figure 3 Figure 2 ;

[0027] Figure 6 is a sectional view of the elastic sheet of the flow controller in the embodiment one of the utility model under the condition of slight deformation;

[0028] Figure 7 is a sectional view of the elastic sheet of the flow controller in the embodiment one of the utility model under the condition of serious deformation;

[0029] Figure 8 is a sectional view of B-B part in the embodiment one of the utility model; Figure 3 Figure 1 ;

[0030] Figure 9 is a sectional view of B-B part in the embodiment one of the utility model; Figure 3 Figure 2 ;

[0031] Figure 10 is a structural schematic view of the elastic sheet in the embodiment two of the utility model;

[0032] Figure 11 is a structural schematic view of the elastic sheet in the embodiment three of the utility model.

[0033] Explanation of reference numerals:

[0034] 1, base; 11, overflow groove; 12, support part; 13, flow limiting hole; 14, overflow channel; 15, protrusion; 16, limiting protruding lip;

[0035] 2, elastic sheet; 21, notch; 22, water through hole;

[0036] 3, first extension part; 4, second extension part. DETAILED DESCRIPTION

[0037] In order to make the technical content, the purpose and the effect of the utility model clear, the following will be explained in combination with the embodiment and the drawings.

[0038] Please refer to Figures 1-11 ​​​​The flow controller comprises a base 1 and an elastic sheet 2 embedded in the base 1, the base 1 is provided with an overflow groove 11, the overflow groove 11 is provided with a supporting part 12 around, the overflow groove 11 is provided with a flow limiting hole 13 for communicating with the outside, the elastic sheet 2 is pressed against the supporting part 12, the bottom surface of the elastic sheet 2 and the bottom wall of the overflow groove 11 form an overflow channel 14, the edge of the elastic sheet 2 and the side wall of the base 1 have a gap for water flow, the gap is communicated with the flow limiting hole 13 through the overflow channel 14, and the projection area of the elastic sheet 2 covers the projection area of the flow limiting hole 13 in the axial direction of the base 1. In order to ensure the formation of the overflow channel 14, the flow limiting hole 13 is further provided with a plurality of protrusions 15 around the inlet of the flow limiting hole 13, the elastic sheet 2 is pressed against the protrusions 15 after being severely deformed, at this time, water flow can still pass through the gap between the protrusions 15, and therefore, the protrusions 15 can avoid that the elastic sheet 2 completely adheres to the inlet of the flow limiting hole 13 to close the flow limiting hole 13 and causes the water passage to be disconnected. The flow limiting hole 13 is coaxially arranged with the base 1.

[0039] It can be understood that, by arranging the supporting part 12, the overflow channel 14 is formed between the elastic sheet 2 and the bottom wall of the overflow groove 11, instead of the supporting leg of the elastic sheet 2 in the prior art. In the utility model, when the elastic sheet 2 is impacted by water flow and is recessed towards the side where the flow limiting hole 13 is located, the height of the overflow channel 14 is reduced, and the water passing area of the overflow channel 14 is reduced. With the gradual increase of the water pressure of the front-end water inlet, the recessing degree of the elastic sheet 2 gradually increases, and the height of the overflow channel 14 gradually decreases. The water pressure increase amount and the height reduction amount of the overflow channel 14 are proportional, the water pressure increase causes the flow rate of the water flow passing through the overflow channel 14 to increase, and the height reduction of the overflow channel 14 causes the water passing area to decrease, so that the output water flow remains basically constant and does not increase synchronously with the increase of the water pressure of the front-end water inlet, thereby realizing the effect of stable flow.

[0040] In addition, the elastic sheet 2 in the utility model is a planar sheet structure, which is more convenient to process and has a high forming yield; since the front and back surfaces have the same structure, the front and back surfaces need not be distinguished during assembly, and assembly is facilitated.

[0041] In some embodiments, the elastic sheet 2 is pressed against the side wall of the overflow groove 11, so that the position of the elastic sheet 2 in the radial direction of the overflow groove 11 is maintained.

[0042] In some embodiments, the thickness of the elastic sheet 2 is less than 1 mm. When the thickness of the elastic sheet 2 is too large, the elastic deformation capability of the elastic sheet 2 will be weakened, so that the deformation amount of the elastic sheet 2 to the water pressure change is reduced, and the effect of stabilizing the flow is not good. The thickness of the elastic sheet 2 should not be too small. When the thickness of the elastic sheet 2 is too small, the deformation amount of the elastic sheet 2 is too large, which easily causes the overflow channel 14 to be reduced too much. Therefore, the thickness of the elastic sheet 2 should be less than 1 mm. Optionally, the thickness of the elastic sheet 2 is 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, or 0.9 mm.

[0043] In some embodiments, the edge of the elastic sheet 2 has at least two notches 21, and the notches 21 form gaps with the side wall of the base 1. The notches 21 are formed for water flow to flow into the flow limiting hole 13 from the water inlet formed between the notches 21 and the support 12 and the overflow channel 14 formed between the overflow groove 11 bottom wall. Since the elastic sheet 2 will deform after being pressed, the water area of the overflow channel 14 is reduced. Therefore, the formation of the notches 21 can not only ensure the stability of the positional relationship between the elastic sheet 2 and the support 12 to ensure the retention of the overflow channel 14, but also make the structure of the elastic sheet 2 more stable.

[0044] In some embodiments, the cross-sectional area of the flow limiting hole 13 is less than one fifth of the cross-sectional area of the water inlet of the base 1. Since the maximum outer diameter of the elastic sheet 2 matches the overflow groove 11, controlling the ratio of the cross-sectional areas of the flow limiting hole 13 and the water inlet of the base 1 can make the notches 21 of the elastic sheet 2 have enough extension space to consider the size of the gap and the length of the overflow channel 14, so that the control of the flow can meet the flow standard of the bathroom product.

[0045] In some embodiments, the support 12 is arranged around the flow limiting hole 13. Optionally, the support 12 includes a plurality of support platforms arranged at equal intervals around the flow limiting hole 13, or the support 12 is an annular boss. When the support 12 includes a plurality of support platforms, the elastic sheet 2 will be pressed against each support platform, and the notches 21 are located between each two adjacent support platforms.

[0046] In some embodiments, the flow passage 14 has a first distance h between the base 1 and the elastic sheet 2 in the axial direction of the base 1; in the radial direction of the base 1, the maximum value of the gap w is at least twice the maximum value of the first distance h, wherein the maximum value of the first distance h is the distance between the elastic sheet 2 and the bottom wall of the flow passage 11 when the elastic sheet 2 is not impacted by the water flow. When the maximum gap w between the notch 21 and the side wall of the base 1 is too small, if the water area of the gap w is smaller than the water area of the first distance h, the elastic sheet 2 loses the function of regulating the flow, therefore, in order to ensure that the elastic sheet 2 can normally play the role of stabilizing the flow, the maximum gap w between the notch 21 and the side wall of the base 1 should not be too small, specifically, the maximum gap w between the notch 21 and the side wall of the base 1 is at least twice the maximum value of the first distance h.

[0047] In some embodiments, the inner wall of the flow passage 11 has a limiting convex lip 16 arranged around and extending towards the center direction of the flow controller, the limiting convex lip 16 is located at one end of the flow passage 11 away from the flow limiting hole 13, and the diameter of the limiting convex lip 16 is smaller than the maximum diameter of the elastic sheet 2, so as to prevent the elastic sheet 2 from falling off from the flow passage 11 when the flow controller is installed on the water outlet device and used upside down.

[0048] In some embodiments, the edge of the elastic sheet 2 is provided with an extension, the extension is located in the gap, and the turbulent water flow during water inlet acts on the upper surface of the elastic sheet 2. Water pressure fluctuation causes a certain frequency of vibration of part of the elastic sheet 2 relative to other parts of the elastic sheet 2. Since the vibration frequency of the elastic sheet 2 at this position is necessarily different from the vibration frequency of the water flow, and the vibration frequency of the water flow itself can be recognized by the human ear as the sound of the water flow, when the vibration amplitude of the elastic sheet 2 is large enough to be recognized by the human ear, it will be identified as noise different from the sound of the water flow. The extension is arranged to cause the elastic sheet 2 to generate a vibration amplitude at the extension that is different from the vibration amplitude at other positions of the elastic sheet 2 during water inlet, thereby breaking the regular vibration state of the entire elastic sheet 2, and further reducing the vibration of the elastic sheet 2. Since the maximum vibration amplitude of the elastic sheet 2 is located in the middle of the notch 21, the extension arranged at this position can best reduce the vibration and noise of the elastic sheet 2. Further, an extension is centrally arranged on each notch 21, and the extensions located on different notches 21 can have different external contours, so that the elastic sheet 2 obtains different pressure bearing areas on different notches 21, thereby causing the vibration amplitude of the elastic sheet 2 to be different at different positions, and the vibration amplitude and vibration frequency of different regions to cancel each other out, thereby reducing the vibration amplitude and vibration frequency of the elastic sheet 2, and finally making the noise more subtle or less recognizable by humans.

[0049] In some embodiments, the middle part of the elastic sheet 2 is provided with a water passage hole 22 for increasing the water flow rate. Since the first distance of the overflow channel 14 will decrease with the increase of water pressure, even approaching to zero, the overflow channel 14 will not be able to pass water flow, resulting in the situation of water flow interruption. However, the water passage hole 22 can ensure that the water flow will always flow out regardless of the change of the first distance of the overflow channel 14. In order to ensure that the elastic sheet 2 can be deformed after being impacted by water flow, the size of the water passage hole 22 should not be too large, and the axial projection area of the water passage hole 22 is less than or equal to 10% of the pressure bearing area of the elastic sheet 2.

[0050] Please refer to Figures 1-9 The embodiment one of the utility model discloses:

[0051] The flow controller comprises a base 1 and an elastic sheet 2 embedded in the base 1. The base 1 is provided with an overflow groove 11, and the overflow groove 11 is provided with a supporting part 12. The supporting part 12 is annularly arranged around a flow limiting hole 13. Preferably, the supporting part 12 is an annular boss. The flow limiting hole 13 is arranged in the overflow groove 11. The elastic sheet 2 is pressed against the supporting part 12 and forms an overflow channel 14 with the bottom wall of the overflow groove 11. The water inlet of the overflow groove 11 is communicated with the flow limiting hole 13 through the overflow channel 14. In the axial direction of the base 1, the projection area of the elastic sheet 2 covers the projection area of the flow limiting hole 13. The elastic sheet 2 is pressed against the side wall of the overflow groove 11, and the thickness of the elastic sheet 2 is 0.8 mm. The cross-sectional area of the flow limiting hole 13 is less than one fifth of the cross-sectional area of the water inlet of the base 1.

[0052] In the embodiment, the elastic sheet 2 has four notches 21 in the circumferential direction of the base 1.

[0053] In the embodiment, the overflow channel 14 has a first distance h in the axial direction of the base 1. In the radial direction of the base 1, the maximum gap w between the notch 21 and the side wall of the base 1 is twice the maximum value of the first distance h.

[0054] In the embodiment, the inner wall of the overflow groove 11 is provided with an annular limiting convex lip 16, and the limiting convex lip 16 is located at the end of the overflow groove 11 away from the flow limiting hole 13.

[0055] Please refer to Figure 10 The embodiment two of the utility model discloses:

[0056] The difference between the embodiment and the embodiment one is that the embodiment comprises a first extension part 3 and a second extension part 4.

[0057] In the embodiment, the edge of the elastic sheet 2 has four evenly distributed notches 21, two of which are symmetrically provided with the first extension 3, and the other two are symmetrically provided with the second extension 4, the first extension 3 and the second extension 4 are located in the gap, the first extension 3 is trapezoidal, and the second extension 4 is rectangular, and in the axial direction of the base 1, the projection area of the first extension 3 is larger than that of the second extension 4. Wherein, the first extension 3 and the second extension 4 are integrally formed with the elastic sheet 2, and constitute a sheet structure.

[0058] Please refer to Figure 11 The third embodiment of the utility model is:

[0059] The difference between the embodiment and the second embodiment is that the water through hole 22 is arranged.

[0060] In the embodiment, the middle part of the elastic sheet 2 is provided with a water through hole 22 coaxially arranged with the flow limiting hole 13.

[0061] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent transformation, direct or indirect application in related technical fields by using the content of the utility model specification and drawings are also included in the patent protection range of the utility model.

Claims

1. A flow controller characterized by, The base and the spring embedded in the base; The base has a flow channel, and a support is arranged around the flow channel, and a flow limiting hole is arranged in the flow channel to communicate with the outside; The spring is pressed against the support, and a flow passage is formed between the bottom surface of the spring and the bottom wall of the flow channel, and a gap is formed between the edge of the spring and the side wall of the base, and the gap communicates with the flow limiting hole through the flow passage; In the axial direction of the base, the projection area of the spring covers the projection area of the flow limiting hole.

2. The flow controller of claim 1, wherein, The cross-sectional area of the flow limiting hole is less than one fifth of the cross-sectional area of the water inlet of the base.

3. The flow controller of claim 1, wherein, The support is an annular boss.

4. The flow controller of claim 1, wherein, The thickness of the spring is less than 1mm.

5. The flow controller of claim 1, wherein, The edge of the spring has at least two notches, and the notches form the gap with the side wall of the base.

6. The flow controller of claim 5, wherein, The flow passage has a first distance with the spring in the axial direction of the base; In the radial direction of the base, the maximum value of the gap is at least twice the maximum value of the first distance.

7. The flow controller of claim 1, wherein, The inner wall of the flow channel has a limiting convex lip arranged around and extending towards the center direction of the flow controller, and the limiting convex lip is located at one end of the flow channel away from the flow limiting hole, and the diameter of the limiting convex lip is less than the maximum diameter of the spring.

8. The flow controller of claim 1, wherein, The edge of the spring is provided with an extension, and the extension is located in the gap.

9. The flow controller of claim 1 or 8, wherein, The middle part of the spring is provided with a water passing hole.

10. The flow controller of claim 5, wherein, The edge of the spring has at least four uniformly distributed notches, two of which are symmetrically arranged and provided with a first extension, and the remaining symmetrically arranged notches are provided with a second extension, and the first extension and the second extension are located in the gap; In the axial direction of the base, the projection area of the first extension is greater than the projection area of the second extension.

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