Fluid oscillator and water outlet device

Abstract

The utility model provides a fluid oscillator and a water outlet device. The fluid oscillator comprises a main body part, flow guide parts and a movable part, the main body part comprises a fluid inlet and a cavity which are communicated with each other, the flow guide parts are arranged in the cavity, a main flow channel is formed between the two flow guide parts, and the flow guide parts and the wall surface of the cavity form a feedback flow channel; the movable part and the main body part jointly define a fluid outlet, a first movable gap is formed between the surface of the side, back to the fluid outlet, of the movable part and the main body part, the movable part is elastic, and the movable part can move relative to the main body part under the pressure action of fluid at the fluid outlet so as to change the size of the fluid outlet. The fluid outlet of the fluid oscillator can deform under the action of the pressure of the fluid, the coverage range of the fluid ejected by the fluid oscillator can change along with the change of the pressure of the fluid, and the fluid oscillator can improve the swing effect or sweeping effect of the fluid at the outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of bathroom products, in particular to a fluid oscillator and a water outlet device. Background Art

[0002] The fluid oscillator can make the fluid ejected from the fluid oscillator sweep back and forth. Moreover, the fluid oscillator mainly relies on the Coanda effect and the shape of the flow channel inside itself to achieve the above effect. There is no need to set up a driving component such as a motor in the fluid oscillator. The fluid oscillator does not need to drive a certain component to swing back and forth through a motor to achieve the effect of reciprocating sweeping of the fluid. Some water outlet devices on the market (showers, faucets, etc.) are integrated with fluid oscillators, so these water outlet devices have the function of dancing water outlet.

[0003] However, for the current fluid oscillator, the size of the coverage area of ​​the fluid ejected from the fluid oscillator is basically fixed, which results in a relatively monotonous fluid swing effect or sweeping effect at the outlet of the fluid oscillator. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a fluid oscillator, whose fluid outlet can be deformed under the action of fluid pressure, and the coverage of the fluid ejected by the fluid oscillator can change with the change of fluid pressure, and the fluid oscillator can enhance the fluid swing effect or sweeping effect at the outlet.

[0005] According to the fluid oscillator of the first aspect of the present invention, the fluid oscillator comprises: a main body, the main body comprises a fluid inlet and a chamber connected to each other; a guide part, the guide part is fixedly connected to the main body, the guide part is arranged in the chamber, two guide parts are provided, the two guide parts are arranged at intervals to form a main flow channel between the two guide parts, the guide part and the wall surface of the chamber are arranged at intervals to form a feedback flow channel, the outlet end of the feedback flow channel and the inlet end of the feedback flow channel are both connected to the main flow channel; a movable part, the movable part is connected to the main body, the movable part and the main body jointly define a fluid outlet, the fluid outlet and the fluid inlet are respectively connected to the two ends of the main flow channel, a first movable gap is formed between the side surface of the movable part facing away from the fluid outlet and the main body, and the movable part is elastic, and the movable part can be deformed and moved relative to the main body under the pressure of the fluid at the fluid outlet to change the size of the fluid outlet.

[0006] The fluid oscillator according to the first embodiment of the utility model has at least the following beneficial effects:

[0007] When the fluid passes through the fluid outlet, the pressure of the fluid acts on the movable part, causing the movable part to deform and move relative to the main body, thereby changing the size of the fluid outlet. As the fluid pressure at the fluid outlet changes, the size of the fluid outlet will also change. The fluid pressure at the fluid outlet is related to the flow rate or pressure of the fluid entering the fluid oscillator. Therefore, for the fluid oscillator of the utility model, the size of its fluid outlet is variable, and the coverage of the ejected fluid can change with the flow rate or pressure of the fluid, which is conducive to improving the sweeping effect of the fluid ejected from the fluid outlet.

[0008] In addition, since the first movable gap is provided on the side of the movable part facing away from the fluid outlet, the movable part encounters less obstruction when moving and deforming, thereby facilitating the size of the fluid outlet to change with the change of fluid pressure.

[0009] According to some embodiments of the present invention, along the direction in which the fluid flows out of the fluid outlet, the width of the first movable gap gradually increases; and / or along the direction in which the fluid flows out of the fluid outlet, the width of the fluid outlet gradually increases.

[0010] According to some embodiments of the utility model, the direction from the fluid inlet to the fluid outlet is a first direction, the arrangement direction of the fluid outlet and the first movable gap is a second direction, and any two of a third direction, the first direction and the second direction are perpendicular to each other; in the third direction, a second movable gap is formed between the movable part and the main body.

[0011] According to some embodiments of the present invention, the main flow channel includes a through port, a surface of the guide portion facing the main flow channel is a guide surface, an end of the guide surface close to the fluid inlet is a proximal end, and the two proximal ends are arranged at intervals to form the through port; the outlet end of the feedback flow channel is located between the through port and the fluid inlet, the cross-sectional area of ​​the through port is S2, the cross-sectional area of ​​the fluid inlet is S1, S1 <S2。

[0012] According to some embodiments of the utility model, a side surface of the guide portion facing the main channel is a guide surface, an end of the guide surface close to the fluid inlet is a proximal end, an end of the guide surface away from the fluid inlet is a distal end, a distance between the two proximal ends is smaller than a distance between the two distal ends, and, from the fluid inlet to the fluid outlet, the distance between the two guide surfaces first increases and then decreases.

[0013] According to some embodiments of the utility model, the guide portion includes a guide surface facing the main channel, the end of the guide surface close to the fluid inlet is the proximal end, the end of the guide surface away from the fluid inlet is the distal end, the end of the main body close to the fluid inlet is connected to the main body to form a connection, the connection is spaced apart from the distal end, and the inlet end of the feedback flow channel is formed between the connection and the distal end; the arrangement direction of the two guide portions is the second direction, for a connection and a guide surface located on the same side of the main channel: in the second direction, at least a portion of the connection is located between the proximal end and the distal end.

[0014] According to some embodiments of the present invention, the movable portion is integrally connected to the main body portion, and / or the guide portion is integrally connected to the main body portion.

[0015] According to some embodiments of the present invention, the material of the movable part is one of silicone rubber, nitrile rubber and EPDM rubber.

[0016] According to some embodiments of the present invention, the fluid oscillator includes two movable parts, the two movable parts are arranged at an interval, and the fluid outlet is located between the two movable parts.

[0017] The water outlet device according to the embodiment of the second aspect of the utility model comprises the fluid oscillator as described in the embodiment of the first aspect.

[0018] The beneficial effects of the water outlet device according to the second embodiment of the utility model are the same as those of the fluid oscillator in the first embodiment, and will not be repeated here.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of a fluid oscillator according to an embodiment of the present utility model;

[0021] Figure 2 for Figure 1 A front view of the fluid oscillator shown;

[0022] Figure 3 for Figure 2 A cross-sectional view of the fluid oscillator shown along section AA;

[0023] Figure 4 is a schematic diagram of the flow path of the fluid flowing through the fluid oscillator over a period of time;

[0024] Figure 5 is a schematic diagram of the flow path of the fluid flowing through the fluid oscillator during another period of time;

[0025] Figure 6 is a schematic diagram of the coverage of the fluid flowing out of the fluid oscillator;

[0026] Figure 7 It is a schematic diagram of the state of the active part when the fluid pressure is relatively small;

[0027] Figure 8 It is a schematic diagram of the state of the movable part when the fluid pressure is relatively large;

[0028] Fig. 9 This is a three-dimensional diagram of a fluid oscillator according to another embodiment of the present invention.

[0029] Figure Number:

[0030] 100-fluid oscillator, 101-main body, 102-flow guide part, 103-main channel, 104-chamber, 105-feedback channel, 106-first active gap, 107-active part, 108-reference plane, 109-fluid outlet, 110-fluid inlet, 111-first flow guide part, 112-second flow guide part, 113-first feedback channel, 114-second feedback channel, 115-water collection port, 116-connection, 117-flow guide surface, 118-outlet forming surface, 119-outlet back side, 120-gap forming surface, 121-through port, 122-second active gap, 123-fixed surface. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] To facilitate the introduction of the fluid oscillator 100 of the present invention, some terms related to fluid mechanics mentioned in the present application are first explained below:

[0036] (1) Coanda Effect: The fluid deviates from its original direction of motion and flows along the surface of a protruding object.

[0037] (2) Venturi effect: When a confined fluid passes through a reduced flow cross-section, the flow velocity increases; the fluid accelerates in a narrow area, causing the fluid pressure to be minimum where the cross-section is smallest.

[0038] The first direction mentioned below is the direction from the fluid inlet 110 to the fluid outlet 109, the second direction is the arrangement direction of the fluid outlet 109 and the first movable gap 106, and any two of the third direction, the first direction and the second direction are perpendicular to each other. In the drawings, the first direction is specifically the direction from top to bottom, the second direction is specifically the left-right direction, and the third direction is specifically the front-back direction.

[0039] Figure 1 and Figure 2 A fluid oscillator 100 in one embodiment of the present invention is shown. The fluid oscillator 100 includes a main body 101 , a flow guide portion 102 and a movable portion 107 .

[0040] like Figure 1 As shown, the outer contour of the main body 101 is roughly rectangular, and the main body 101 includes a fluid inlet 110 and a chamber 104 that are interconnected. The guide portion 102 is fixedly connected to the main body 101, and the guide portion 102 is arranged in the chamber 104. There are two guide portions 102. In this embodiment, the two guide portions 102 are symmetrical, and the entire fluid oscillator 100 is also symmetrical in shape. The two guide portions 102 are spaced apart, so that a main flow channel 103 is formed between the two guide portions 102. The guide portion 102 is spaced apart from the wall of the chamber 104 to form a feedback flow channel 105. The main flow channel 103 and the feedback flow channel 105 can be regarded as different areas of the chamber 104. As shown Figure 2As shown in FIG. 1 , the feedback channel 105 is generally in a “C” shape, and the outlet end of the feedback channel 105 and the inlet end of the feedback channel 105 are both connected to the main channel 103. The distance between the outlet end of the feedback channel 105 and the fluid inlet 110 is smaller than the distance between the inlet end of the feedback channel 105 and the fluid inlet 110. That is, the outlet end of the feedback channel 105 is closer to the fluid inlet 110 than the inlet end. Figure 2 For example, the inlet end of the feedback flow channel 105 is the bottom end of the feedback flow channel 105 , and the outlet end of the feedback flow channel 105 is the top end of the feedback flow channel 105 .

[0041] like Figure 2 As shown, the movable part 107 is connected to the main body 101, and the movable part 107 and the main body 101 jointly define a fluid outlet 109, and the fluid outlet 109 and the fluid inlet 110 are respectively connected to the two ends of the main channel 103. In this embodiment, there are two movable parts 107, and the two movable parts 107 are arranged at intervals. The reference surface 108 of the main body 101 and the two movable parts 107 jointly enclose a fluid outlet 109, and the fluid outlet 109 is located between the two movable parts 107. In this embodiment, the central axis of the fluid outlet 109, the central axis of the fluid outlet 109 and the central axis of the main channel 103 coincide. A first movable gap 106 is formed between the side surface of the movable part 107 facing away from the fluid outlet 109 and the main body 101, and the movable part 107 is elastic. Therefore, the movable part 107 can be deformed and moved relative to the main body 101 under the pressure of the fluid at the fluid outlet 109 to change the size of the fluid outlet 109.

[0042] The process of the fluid passing through the fluid oscillator 100 is described below. For the convenience of description, water is used as the fluid flowing through the fluid oscillator 100 below. However, it can be understood that the water mentioned below can also be replaced by gas or other liquids other than water. In addition, for the convenience of description, the guide part 102 on the left is referred to as the first guide part 111, the feedback channel 105 on the left is referred to as the first feedback channel 113, the guide part 102 on the right is referred to as the second guide part 112, and the feedback channel 105 on the right is referred to as the second feedback channel 114.

[0043] exist Figures 4 to 6 In FIG. 1 , arrows indicate the flow path of water. The surface of the guide portion 102 facing the main channel 103 is a guide surface 117 (eg, Figure 2 As shown in FIG. 1 , after water enters the chamber 104 from the fluid inlet 110, the water will flow along the guide surface 117 of the guide portion 102 based on the Coanda effect. When the water first enters the chamber 104, it is random which guide portion 102 the water will flow along, but this does not affect the final water discharge effect of the fluid oscillator 100. Assuming that the water first flows along the first guide portion 111, then Figure 4As shown, water flows along the first guide portion 111 to the inlet end (bottom end) of the first feedback channel 113, and then collides with the connection 116 on the left side, and a part of the water enters the first feedback channel 113 and flows back to the top of the main channel 103, and the other part of the water flows out along the right wall of the fluid outlet 109. Among them, one end of the movable portion 107 close to the fluid inlet 110 is connected to the main body 101 to form the connection 116.

[0044] like Figure 2 As shown in FIG. 1 , the direction of the fluid inlet 110 is not parallel to the direction of the outlet end of the feedback channel 105. Therefore, after the water flowing back from the first feedback channel 113 to the top of the main channel 103 merges with the water entering the main channel 103, the merged water flow will deviate to the right and flow along the second guide portion 112. Figure 5 As shown, water flows along the second guide portion 112 to the inlet end of the second feedback channel 114 , then part of the water enters the second feedback channel 114 and flows back to the top of the main channel 103 , and the other part of the water flows out along the left wall of the fluid outlet 109 .

[0045] The water flowing back from the second feedback flow channel 114 to the main flow channel 103 will merge with the water that subsequently enters the main flow channel 103 , and the merged water will deviate to the left, so that the water will flow along the first guide portion 111 again.

[0046] Therefore, in a certain period of time, the water flow path is as follows Figure 4 As shown; in the next period of time, the water flow path is as follows Figure 5 As shown. The direction of the water flow ejected from the fluid outlet 109 changes periodically. In a sufficiently long period of time, the water flow ejected from the fluid outlet 109 will sweep back and forth. The area that can be swept by the water flow ejected from the fluid oscillator 100 is the coverage of the water flow. Figure 6 In the example, the area covered by the water flow is shown by line segment BC. Figure 6 It can be seen that the size of the fluid outlet 109 is related to the coverage of the water flow. The larger the fluid outlet 109 is, the larger the coverage of the water flow is. In the present invention, the size of the fluid outlet 109 specifically refers to the size of the end of the fluid outlet 109 away from the fluid outlet 109.

[0047] When water flows through the fluid outlet 109, the pressure of the water acts on the movable portion 107, causing the movable portion 107 to deform and move relative to the main body 101, thereby changing the size of the fluid outlet 109. Figure 7 As shown, when the water pressure is relatively low, the angle between the two movable parts 107 is α. Figure 8As shown, when the water pressure is relatively high, the angle between the two movable parts 107 is β, β>α. Therefore, as the water pressure at the fluid outlet 109 changes, the size of the fluid outlet 109 will also change. The water pressure at the fluid outlet 109 is related to the flow rate or pressure of the water entering the fluid oscillator 100. Therefore, for the fluid oscillator 100 of the utility model, the size of its fluid outlet 109 is variable, and its water flow coverage can change with the change of the flow rate or pressure of the water, which is conducive to improving the sweeping effect of the water ejected from the fluid outlet 109. Since the first movable gap 106 is provided on the side of the movable part 107 facing away from the fluid outlet 109, the movable part 107 is less obstructed when it moves and deforms, thereby facilitating the size of the fluid outlet 109 to change with the change of water pressure. In addition, since two movable parts 107 are provided in this embodiment and the two movable parts 107 are respectively located on both sides of the fluid outlet 109, the fluid outlet 109 is less obstructed when it is deformed, and the size of the fluid outlet 109 is more easily changed with the change of water pressure.

[0048] In order to make the movable part 107 elastic, the material of the movable part 107 can be set to rubber. More specifically, the material of the movable part 107 can be set to one of silicone rubber, nitrile rubber (Nitrile Butadiene Rubber), and ethylene propylene diene monomer (Ethylene Propylene Diene Monomer).

[0049] like Figure 3 As shown, in the third direction (front-rear direction), a second movable gap 122 is formed between the movable portion 107 and the main body 101. In this way, only the top end of the movable portion 107 is connected to the main body 101, and the movable portion 107 is equivalent to an elastic cantilever structure suspended at the reference plane 108. The movable portion 107 is less obstructed when deforming and moving, and the opening and closing of the fluid outlet 109 are less obstructed.

[0050] More specifically, if Figure 1 As shown, the main body 101 includes a reference surface 108 and a gap forming surface 120 connected to each other. The reference surface 108 is a part of the wall surface of the chamber 104, and the reference surface 108 is located at the rear side of the movable part 107. The movable part 107 covers a part of the reference surface 108, as shown in FIG. Figure 2 As shown, the movable portion 107 includes an outlet forming surface 118 and an outlet back surface 119 facing each other. The two outlet forming surfaces 118 are arranged opposite to each other, and the reference surface 108 and the two outlet forming surfaces 118 jointly define the fluid outlet 109. The outlet back surface 119 and the gap forming surface 120 located on the same side of the main channel 103 are arranged at intervals. The reference surface 108, the outlet back surface 119 located on the same side of the main channel 103, and the gap forming surface 120 jointly define the first movable gap 106. Figure 3 As shown, the movable part 107 also includes a transition surface, which is the rear surface of the movable part 107. In the same movable part 107, the two ends (left and right ends) of the transition surface are respectively connected to the outlet forming surface 118 and the outlet back surface 119. The transition surface and the reference surface 108 are arranged opposite to each other and spaced apart to form a second movable gap 122.

[0051] like Figure 2 As shown, in some embodiments, along the direction in which the fluid flows out of the fluid outlet 109 (i.e., from top to bottom), the width of the fluid outlet 109 gradually increases. This arrangement facilitates the water flow at the fluid outlet 109 to swing, thereby increasing the coverage of the water flow. The width of the fluid outlet 109 refers to the length of the fluid outlet 109 in the second direction, and the second direction refers to the arrangement direction of the fluid outlet 109 and the first movable gap 106.

[0052] like Figure 2 As shown, in some embodiments, the width of the first movable gap 106 gradually increases along the direction in which the fluid flows out of the fluid outlet 109. The width of the first movable gap 106 refers to the length of the first movable gap 106 in the second direction. The above arrangement allows the end of the movable portion 107 away from the fluid inlet 110 to have a larger range of movement, increasing the size of the fluid outlet 109 when it is opened to the maximum amplitude, thereby increasing the maximum coverage of the water flow.

[0053] like Figure 2 As shown, in some embodiments, the main body 101 is further provided with a trumpet-shaped water gathering port 115 , and the water gathering port 115 and the main channel 103 are respectively connected to the two ends of the fluid inlet 110 , and the water gathering port 115 is used to gather water to the fluid inlet 110 so that the water enters the fluid inlet 110 .

[0054] In some embodiments, in order to reduce the assembly process of the fluid oscillator 100, the movable part 107 and the main body 101 can be connected in one piece (the two are formed in one piece); accordingly, the material of the movable part 107 and the main body 101 is the same. In other embodiments, the movable part 107 and the main body 101 may not be formed in one piece, and the movable part 107 and the main body 101 may also be connected together by a detachable connection. Similarly, the guide part 102 and the main body 101 can be connected in one piece (the material of the guide part 102 and the main body 101 is the same), and the guide part 102 and the main body 101 may also be connected together by a detachable connection. It should be noted that if the movable part 107 and the main body 101 are not formed in one piece, then the material of the movable part 107 and the material of the main body 101 can be the same or different, and the main body 101 can be made of a material that does not have elasticity.

[0055] like Figure 2 As shown, the sprue 103 includes a through port 121. One end of the guiding surface 117 close to the fluid inlet 110 is the proximal end, and the two proximal ends are spaced apart to form the through port 121. In Figure 2 , the proximal end of the guiding surface 117 is the top end of the guiding surface 117. The outlet end of the feedback channel 105 is located between the through port 121 and the fluid inlet 110. The cross-sectional area of the through port 121 is S2, and the cross-sectional area of the fluid inlet 110 is S1, where S1 < S2. The cross-sectional area of the fluid inlet 110 refers to the area of the cross-section obtained by intercepting the fluid inlet 110 with a plane perpendicular to the axis of the fluid inlet 110. The cross-sectional area of the through port 121 refers to the area of the cross-section obtained by intercepting the through port 121 with a plane perpendicular to the axis of the through port 121. In the case of S1 < S2, based on the Venturi effect, the pressure of the water between the fluid inlet 110 and the through port 121 is relatively small, that is, the pressure at the outlet end of the feedback channel 105 is relatively small. This causes a negative pressure to be formed at the outlet end of the feedback channel 105, which is conducive to the water flowing out from the outlet end of the feedback channel 105 and merging into the water flow of the sprue 103.

[0056] One end of the guiding surface 117 away from the fluid inlet 110 is the distal end. In Figure 2 , the bottom end of the guiding surface 117 is the distal end. As Figure 2 shown, the distance between the two proximal ends is less than the distance between the two distal ends, and, from the fluid inlet 110 to the fluid outlet 109, the distance between the two guiding surfaces 117 first increases and then decreases. In this way, the sprue 103 is in the shape of a water droplet. Since the distance between the two guiding surfaces 117 first increases and then decreases, the water leaving from one side of the guiding surface 117 (for example, the right guiding surface 117) can be guided by the guiding surface 117 to the other side's movable part 107 (for example, the left movable part 107) so that the water flows out along the surface of one of the movable parts 107.

[0057] As Figure 2 shown, one end of the main body 101 close to the fluid inlet 110 is connected to the main body 101 to form a connection part 116. The connection part 116 is spaced apart from the distal end, and an inlet end of the feedback channel 105 is formed between the connection part 116 and the distal end. The arrangement direction of the two guiding parts 102 is the second direction. For a connection part 116 and a guiding surface 117 on the same side of the sprue 103 (both on the left side or both on the right side): in the second direction, at least a part of the connection part 116 is located between the proximal end and the distal end. In this setting, the connection part 116 can also guide a part of the water to the movable part 107 on the opposite side so that the water flows out along the surface of one of the movable parts 107.

[0058] Fig. 9A fluid oscillator 100 in another embodiment is shown. Fig. 9 The fluid oscillator 100 shown is Figure 1 The main differences of the fluidic oscillator 100 shown are: Fig. 9 The fluid oscillator 100 shown has only one movable portion 107. Specifically, Fig. 9 As shown, the main body 101 includes a fixed surface 123, a reference surface 108 and a gap forming surface 120. The fixed surface 123 and the outlet forming surface 118 of the movable part 107 are arranged opposite to each other and spaced apart. The fixed surface 123, the reference surface 108 and the outlet forming surface 118 jointly surround the fluid outlet 109. The first movable gap 106 is located between the gap forming surface 120 and the movable part 107. As the water pressure at the fluid outlet 109 changes, the deformation and / or movement amplitude of the movable part 107 will also change, the size of the fluid outlet 109 will also change, and the coverage range of the water flow will also change. Figure 1 Similar to the embodiment shown, Fig. 9 The water flow coverage of the fluidic oscillator 100 shown can vary with the change of the flow rate or pressure of the water, which is beneficial to enhance the sweeping effect of the water ejected from the fluid outlet 109 . Fig. 9 The remaining structural designs of the fluid oscillator 100 can refer to the above related descriptions and will not be repeated here.

[0059] The fluid oscillator 100 in any of the above embodiments may be applied to a water outlet device. The water outlet device may specifically be a shower head, a faucet, a spray gun, etc. The water outlet device may have one or more fluid oscillators 100 .

[0060] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A fluid oscillator, characterized in that include: A main body, the main body comprising a fluid inlet and a chamber that are interconnected; A flow guide portion, the flow guide portion is fixedly connected to the main body portion, the flow guide portion is arranged in the chamber, two flow guide portions are provided, the two flow guide portions are arranged at intervals to form a main flow channel between the two flow guide portions, the flow guide portion is arranged at intervals to form a feedback flow channel with the wall surface of the chamber, and the outlet end of the feedback flow channel and the inlet end of the feedback flow channel are both connected to the main flow channel; A movable part, wherein the movable part is connected to the main body, and the movable part and the main body jointly define a fluid outlet, wherein the fluid outlet and the fluid inlet are respectively connected to two ends of the main channel, and a first movable gap is formed between a surface of the movable part facing away from the fluid outlet and the main body, and the movable part is elastic, and can be deformed and moved relative to the main body under the pressure of the fluid at the fluid outlet to change the size of the fluid outlet.

2. The fluid oscillator according to claim 1, characterized in that: Along the direction in which the fluid flows out from the fluid outlet, the width of the first movable gap gradually increases; And / or, along the direction in which the fluid flows out of the fluid outlet, the width of the fluid outlet gradually increases.

3. The fluid oscillator according to claim 1, characterized in that: The direction from the fluid inlet to the fluid outlet is a first direction, the arrangement direction of the fluid outlet and the first movable gap is a second direction, and any two of the third direction, the first direction and the second direction are perpendicular to each other; In the third direction, a second movable gap is formed between the movable portion and the main body portion.

4. The fluid oscillator according to claim 1, characterized in that: The main flow channel comprises a through opening, a surface of the flow guide portion facing the main flow channel is a flow guide surface, an end of the flow guide surface close to the fluid inlet is a proximal end, and two proximal ends are spaced apart to form the through opening; The outlet end of the feedback flow channel is located between the through port and the fluid inlet, the cross-sectional area of ​​the through port is S2, and the cross-sectional area of ​​the fluid inlet is S1, S1 <S2。 5. The fluid oscillator according to claim 1, characterized in that: A surface of the guide portion on one side facing the main channel is a guide surface, an end of the guide surface close to the fluid inlet is a proximal end, an end of the guide surface away from the fluid inlet is a distal end, a distance between the two proximal ends is smaller than a distance between the two distal ends, and, from the fluid inlet to the fluid outlet, the distance between the two guide surfaces first increases and then decreases.

6. The fluid oscillator according to claim 1, characterized in that: The guide portion includes a guide surface facing the main flow channel, an end of the guide surface close to the fluid inlet is a proximal end, an end of the guide surface away from the fluid inlet is a distal end, an end of the main body portion close to the fluid inlet is connected to the main body portion to form a connection, the connection is spaced apart from the distal end, and an inlet end of the feedback flow channel is formed between the connection and the distal end; The arrangement direction of the two guide portions is the second direction. For a connection point and a guide surface located on the same side of the main channel: in the second direction, at least a portion of the connection point is located between the proximal end and the distal end.

7. The fluid oscillator according to claim 1, characterized in that: The movable portion is integrally connected to the main body, and / or the flow guide portion is integrally connected to the main body.

8. The fluid oscillator according to claim 1, characterized in that: The material of the movable part is one of silicone rubber, nitrile rubber and EPDM rubber.

9. The fluid oscillator according to claim 1, characterized in that: The fluid oscillator comprises two movable parts, the two movable parts are arranged at an interval, and the fluid outlet is located between the two movable parts.

10. A water outlet device, characterized in that: Comprising the fluid oscillator as claimed in any one of claims 1 to 9.

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