Water outlet device

Abstract

The invention provides a water outlet device which comprises a variable cavity and a water outlet cavity which are arranged in the water outlet device, and the variable cavity is communicated with the water outlet cavity; the volume of the variable cavity is not equal in the water supply state and the water stop state, a piston is arranged in the water outlet device, and the piston is connected with the inner wall of the water outlet device in a sealed mode to form the variable cavity. When water is introduced, the piston moves in the direction in which the volume of the variable chamber is reduced, so that the volume of the variable chamber is reduced; when the water is closed, the piston moves towards the volume increasing direction of the variable cavity, so that the volume of the variable cavity is increased, a negative pressure cavity is formed, and residual water in the water outlet cavity is sucked into the variable cavity.

Description

Technical Field

[0001] The invention relates to a household item, in particular to a water outlet device. Background Art

[0002] Some shower heads in the prior art are provided with a movable plate in the body that can move up and down in the cavity and is used to seal the water outlet. A pressure chamber is formed between the movable plate and the water outlet panel. When the shower head is turned on and the buoyancy of the water in the pressure chamber is sufficient to lift the movable plate, the shower head discharges water. When the shower head is turned off, the buoyancy of the water in the pressure chamber decreases rapidly, so that the movable plate seals the water outlet again, and the shower head stops water, thus achieving the effect of preventing water from dripping after showering. Since the movable plate has a certain weight, it needs to be lifted up. Before the shower head is turned on and the water actually flows out, the water needs to be held in the pressure chamber for a period of time to form a sufficiently large buoyancy. Therefore, it has the defects of high starting water pressure and delayed water discharge. Summary of the invention

[0003] The main technical problem to be solved by the present invention is to provide a water outlet device which has a sensitive response and less delay when shutting off the water.

[0004] In order to solve the above technical problems, the present invention provides a water outlet device, comprising: a variable chamber and a water outlet cavity arranged in the water outlet device, wherein the variable chamber is connected to the water outlet cavity;

[0005] The volume of the variable chamber is not equal when water is flowing and when water is turned off. A piston is provided in the water outlet device, and the piston is connected to the inner wall of the water outlet device to form the variable chamber. When water is flowing, the piston moves in the direction of reducing the volume of the variable chamber, so that the volume of the variable chamber becomes smaller. When water is turned off, the piston moves in the direction of increasing the volume of the variable chamber, so that the volume of the variable chamber increases, forming a negative pressure chamber, and sucking the residual water in the water outlet chamber into the variable chamber.

[0006] In a preferred embodiment: the piston is connected to a spring; when water is passed, the spring is squeezed by the piston to accumulate elastic restoring force; when the water is turned off, the piston moves in the direction of increasing the volume of the variable chamber under the action of the elastic restoring force, so that the volume of the variable chamber increases, forming a negative pressure chamber, and sucking the residual water in the water outlet chamber into the variable chamber.

[0007] In a preferred embodiment: the variable chamber is provided with a first opening connected to the water outlet chamber. When the water is turned off, the volume of the variable chamber increases to form a negative pressure chamber, and the residual water in the water outlet chamber is sucked into the variable chamber through the first opening.

[0008] In a preferred embodiment: the water outlet chamber is further provided with a variable cross-section flow channel, and after the water flow is accelerated through the variable cross-section flow channel, negative pressure is generated at the connection point between the variable chamber and the water outlet chamber.

[0009] In a preferred embodiment: a second opening is provided on the variable cross-section flow channel, and the second opening is communicated with the first opening.

[0010] In a preferred embodiment: the variable cross-section flow channel includes a flow channel with a small cross-sectional area, a flow channel with a first large cross-sectional area, and a flow channel with a second large cross-sectional area, and the flow channel with the first large cross-sectional area, the flow channel with a small cross-sectional area, and the flow channel with the second large cross-sectional area are sequentially arranged along the water outlet direction;

[0011] When water flows, the water flows through the flow channel with a small cross-sectional area to accelerate and generate negative pressure on the flow channel with a variable cross-sectional area, sucking away the air in the variable chamber and reducing the volume of the variable chamber.

[0012] In a preferred embodiment: the second opening is arranged at the flow channel with the second large cross-sectional area.

[0013] In a preferred embodiment: the piston is sealed and connected to the inner wall of the water outlet device via a sealing ring.

[0014] In a preferred embodiment: the sealing ring is a Y-shaped sealing ring.

[0015] In a preferred embodiment, there are two Y-shaped sealing rings, and the two Y-shaped sealing rings are arranged in opposite directions.

[0016] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0017] 1. The present invention provides a method for shutting off water and a water outlet device. When water is turned on, the water flow is accelerated through a flow channel with a smaller cross-sectional area. According to the Bernoulli equation, the pressure can be reduced, thereby generating a negative pressure on the variable cross-sectional flow channel. The through hole on the variable cross-sectional flow channel is connected to the variable chamber, thereby sucking away the air in the variable chamber, so that the piston overcomes the spring force and moves inward under the action of the external atmospheric pressure.

[0018] When the water is turned off, the negative pressure at the through hole disappears (restored to a state close to atmospheric pressure), and the piston moves outward under the action of the spring force and close to atmospheric pressure, overcoming the external atmospheric pressure. At this time, the air in the variable chamber generates negative pressure due to the increase in the volume of the variable chamber, and the residual water in the water outlet chamber is sucked into the variable chamber through the through hole. Thus, the effect of turning off the water quickly is achieved.

[0019] And because the variable chamber is independently arranged outside the water outlet chamber, the reduction of the volume of the variable chamber when water flows does not depend on the water pressure acting on the variable chamber, so that water can be discharged smoothly even if the water pressure is relatively low when water flows.

[0020] 2. The present invention also provides a method for shutting off water and a water outlet device, which adds a water shutoff seal disposed at the connection between the water outlet hole and the water outlet chamber on the basis of the above method. When shutting off the water, the residual water in the water outlet chamber is sucked into the variable chamber, so that the volume of gas in the water outlet chamber increases to generate negative pressure, and the external atmospheric pressure acts on the check plate with the cutout, causing the check plate to arch upward, thereby achieving the effect of shutting off the water quickly. At the same time, the water contained in the water outlet hole is sucked back due to the arch of the check plate with the cutout, so that there is no trace of residual water on the surface of the water outlet hole. In this way, even if the water outlet device is not in a horizontal state, the outside air will not enter the water outlet chamber, and the purpose of shutting off the water quickly at any angle can be achieved. When the water is flowing, the gas in the variable chamber enters the water outlet chamber, and the water pressure of the water outlet acts on the water shutoff seal, which can push the water shutoff seal downward, thereby restoring the connection between the water outlet hole and the water outlet chamber.

[0021] 3. The above-mentioned water shut-off method and water outlet device are highly sensitive. Water can be discharged as soon as the water is turned on, and water can be stopped as soon as the water is turned off. The starting water pressure is also relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional diagram of the appearance of a preferred embodiment 1 of the present invention;

[0023] Figure 2 It is a schematic diagram of a water-sealing member in a preferred embodiment 1 of the present invention;

[0024] Figure 3 It is a cross-sectional view of the shower head in the preferred embodiment 1 of the present invention in the water-flowing state;

[0025] Figure 4 It is a cross-sectional view of the shower head in the water-off state in the preferred embodiment 1 of the present invention;

[0026] Figure 5 It is a cross-sectional view of the shower head in the preferred embodiment 2 of the present invention in the water-flowing state;

[0027] Figure 6 It is a cross-sectional view of the shower head in the water-off state in the preferred embodiment 2 of the present invention. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] This embodiment provides a method for turning off water, which is applied to a water outlet device, including the steps of using the connection between the variable chamber 1 and the water outlet chamber 2 to release the negative pressure when turning off the water, so that the volume of the variable chamber 1 becomes larger to form a negative pressure chamber, so as to suck the residual water in the water outlet chamber 2 into the negative pressure chamber. Through this step, the residual water in the water outlet chamber 2 can be directly sucked into the negative pressure chamber when turning off the water, forming a quick stop effect of turning off the water. This method can immediately shut off the water outlet of the water outlet device when turning off the water, without waiting for the buoyancy of the water in the pressure chamber to drop before turning off the water as in the prior art. In this way, the sensitivity is relatively high.

[0032] The above technical solution realizes the quick stop of water shut-off. In order to realize the variable volume of the variable chamber 1, the present embodiment also includes a step of reducing the volume of the variable chamber 1 of the water outlet device when water is flowing. In this way, the volume of the variable chamber 1 is relatively small when water is flowing, which provides a basis for increasing the volume when the water is shut off.

[0033] In order to achieve the volume change of the variable chamber 1, when water is passed, a negative pressure is generated at the connection between the variable chamber 1 and the water outlet chamber 2, and the gas in the variable chamber 1 enters the water outlet chamber 2, and the volume of the variable chamber 1 becomes smaller. When the water is turned off, the negative pressure at the connection between the variable chamber 1 and the water outlet chamber 2 disappears, and the chamber can expand under the action of the elastic reset force, and the volume of the variable chamber 1 becomes larger. And because the variable chamber 1 is independently arranged outside the water outlet chamber 2, the reduction of the volume of the variable chamber 1 when water is passed does not depend on the water pressure acting on the variable chamber 1, so that water can be discharged smoothly even if the water pressure is relatively low when water is passed.

[0034] The above technical solution is suitable for application in the state where the water outlet device is kept horizontal, because in this state, after the water is turned off, every part of the water outlet chamber 2 is full of water, and the water in the water outlet chamber 2 can be sucked into the variable chamber 1 by the negative pressure. Once the water outlet device is tilted, the residual water in the water outlet chamber 2 will flow to the tilted side, causing part of the water outlet chamber 2 to be connected to the outside atmosphere. At this time, the water outlet chamber 2 cannot form a negative pressure, and the residual water cannot be kept in the water outlet chamber 2, so the residual water will still drip from the water outlet hole, and the effect of turning off the water quickly cannot be achieved. .

[0035] Therefore, in order to solve the above-mentioned technical problems, the present embodiment also provides a method for shutting off water, which is applied to a water outlet device, including the step of increasing the volume of gas in the water outlet chamber 2 of the water outlet device to form a negative pressure when the water is shut off, so that the water shut-off seal 4 at the water outlet hole 3 seals the connection between the water outlet hole 3 and the water outlet chamber 2.

[0036] Since a water shutoff seal 4 is newly added, when the residual water in the water outlet chamber 2 is sucked into the variable chamber 1, the air volume in the water outlet chamber 2 increases to form a negative pressure, so that a pressure difference can be formed on both sides of the water shutoff seal 4, so that the water shutoff seal 4 arches up and seals the connection between the water outlet hole 3 and the water outlet chamber 2. In this way, even if the water outlet device is tilted, no air will enter the water outlet chamber 2 from the water outlet hole 3, ensuring that the water shutoff and quick stop can be achieved at any angle.

[0037] This method can also realize low-pressure water flow. When water is flowing, the water pressure in the water outlet chamber 2 acts on the water shut-off seal 4, which can push the water shut-off seal 4 downward, thereby restoring the connection between the water outlet hole 3 and the water outlet chamber 2. Therefore, this opening method requires a relatively small water pressure, which can achieve the purpose of low-pressure rapid opening.

[0038] In order to realize the above-mentioned water shut-off method, this embodiment provides two structures that can be realized. It should be pointed out that this embodiment takes the top spray shower as an example, but the structure of this part can also be applied to other water outlet devices, which is a simple replacement of this embodiment and will not be repeated.

[0039] Example 1

[0040] refer to Figure 1-Figure 4, this embodiment provides a water outlet device, including: a variable chamber 1 and a water outlet chamber 2 arranged in the water outlet device, wherein the variable chamber 1 is connected to the water outlet chamber 2; and the variable chamber 1 is independently arranged outside the water outlet chamber 2. The variable chamber 1 is independently arranged outside the water outlet chamber 2, which means that when the water flows through the water outlet chamber 2, it will not enter the variable chamber 1 from the connection between the variable chamber 1 and the water outlet chamber 2. For example, the variable chamber 1 can be arranged on the periphery of the water outlet chamber 2, and the center line of the variable chamber 1 can be perpendicular to the direction of the water flow; or the center line of the shell variable chamber 1 forms an angle with the direction of the water flow. The variable chamber 1 is independently arranged outside the water flow direction of the water outlet chamber 2, which means that when the water flows through the water outlet chamber 2, it will not enter the variable chamber 1 from the connection between the variable chamber 1 and the water outlet chamber 2.

[0041] The water outlet chamber 2 is provided with a variable cross-section flow channel 5 for accelerating the water flowing through; preferably, the variable chamber 1 is arranged on the periphery of the variable cross-section flow channel 5, and the variable cross-section flow channel 5 is provided with a through hole 6 connected to the variable chamber 1. In this embodiment, the through hole includes a first opening 61 arranged on the variable chamber 1, and a second opening 62 arranged on the variable cross-section flow channel 5. The first opening 61 and the second opening 62 are connected to each other through the water outlet chamber 2. When the above-mentioned water outlet device is passed through the flow channel with a smaller cross-sectional area for the first time after installation, the water flow is accelerated through the flow channel with a smaller cross-sectional area. According to the Bernoulli equation, the kinetic energy increases and the pressure energy decreases, so a negative pressure is generated on the variable cross-sectional flow channel 5. The second opening 62 on the variable cross-sectional flow channel 5 is connected to the first opening 61 of the variable chamber 1, thereby sucking away the air in the variable chamber 1, so that the variable chamber 1 shrinks under the action of the external atmospheric pressure and the volume becomes smaller. When the water is turned off, the negative pressure at the second opening 62 disappears (restored to a state close to atmospheric pressure), and the volume of the variable chamber 1 increases. In this way, the volume of the variable chamber 1 changes with the water-on and water-off states, so that the variable chamber 1 forms a negative pressure chamber when the water is turned off.

[0042] In this embodiment, a piston 7 is provided in the water outlet device, and the piston 7 is sealed and connected to the inner wall of the water outlet device to form the variable chamber 1; the piston 7 is connected to the spring 8 on the side facing the fixed end of the variable chamber, and when the volume of the variable chamber 1 decreases, the spring 8 is squeezed by the piston 7 to accumulate elastic reset force. When the negative pressure at the second opening 62 disappears, the piston 7 moves in the direction of increasing the volume of the variable chamber 1 under the combined action of the elastic reset force and the atmospheric pressure, so that the volume of the variable chamber 1 increases, forming a negative pressure chamber, and the residual water in the water outlet chamber 2 is sucked into the variable chamber 1 through the first opening 61 and the second opening 62. Each time the water is passed, the water flow is accelerated through the flow channel with a smaller cross-sectional area. According to the Bernoulli equation, the kinetic energy increases and the pressure energy decreases, so a negative pressure is generated on the variable cross-sectional flow channel 5, and the second opening 62 on the variable cross-sectional flow channel 5 is connected to the first opening 61 of the variable chamber 1, so that the air in the variable chamber 1 and the water sucked into the variable chamber 1 when the water is turned off last time are sucked into the water outlet chamber 2. In this embodiment, the movement direction of the piston is perpendicular to the water flow direction in the water outlet chamber 2 .

[0043] In order to achieve a sealed connection between the piston 7 and the inner wall of the water outlet device, the piston 7 is connected to the inner wall of the water outlet device through two Y-shaped sealing rings 9 and 10. The two Y-shaped sealing rings 9 and 10 are set in opposite directions, so that one of the Y-shaped sealing rings 9 is used to seal and isolate the external atmosphere from the variable chamber 1, and the other Y-shaped sealing ring 10 is used to seal the residual water sucked into the variable chamber 1 when the water is turned off, so as to prevent the residual water from flowing out from this position.

[0044] In order to further achieve the effect of shutting off the water quickly at any angle, in this embodiment, a water shut-off seal 4 is provided at the connection point between the water outlet hole 3 and the water outlet cavity 2;

[0045] When the water is turned off, the residual water in the water outlet chamber 2 is sucked into the variable chamber 1 to form a negative pressure in the water outlet chamber 2. The pressure difference on both sides of the water shut-off seal 4 moves the water shut-off seal 4 to a position that seals the connection between the water outlet hole 3 and the water outlet chamber 2.

[0046] Furthermore, the water shut-off seal 4 is a check plate with a cutout. When the water is shut off, the residual water in the water outlet chamber 2 is sucked into the variable chamber 1, so the volume of gas in the water outlet chamber 2 increases to generate negative pressure, and the external atmospheric pressure acts on the check plate with the cutout, causing the check plate to arch upward, thereby achieving the effect of shutting off the water quickly. At the same time, the water contained in the water outlet 3 is sucked back due to the arch of the check plate with the cutout, so that there is no trace of residual water on the surface of the water outlet 3. In this way, even if the water outlet device is not in a horizontal state, the outside air will not enter the water outlet chamber 2, and the purpose of shutting off the water quickly at any angle can be achieved. When the water is flowing, the gas in the variable chamber 1 enters the water outlet chamber 2, and the water pressure of the water outlet acts on the water shut-off seal 4, which can push the water shut-off seal 4 downward, open the cutout of the water shut-off seal 4, and restore the connection between the water outlet 3 and the water outlet chamber 2.

[0047] Example 2

[0048] refer to Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 is that the variable chamber 1 is an elastic chamber made of elastic material. When the volume of the variable chamber 1 decreases, the elastic material contracts to generate an elastic reset force. In this way, the volume of the variable chamber 1 changes with the water-through and water-off states, so that the variable chamber 1 forms a negative pressure chamber when the water is turned off. In this embodiment, the elastic material is elastic silicone. The rest is the same as embodiment 1 and will not be repeated.

[0049] The above is only a preferred specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. Water outlet device, characterized in that include: A variable chamber and a water outlet chamber are arranged in the water outlet device, wherein the variable chamber is connected to the water outlet chamber; The volume of the variable chamber is not equal when water is flowing and when water is turned off. A piston is provided in the water outlet device, and the piston is connected to the inner wall of the water outlet device to form the variable chamber. When water is flowing, the piston moves in the direction of reducing the volume of the variable chamber, so that the volume of the variable chamber becomes smaller. When water is turned off, the piston moves in the direction of increasing the volume of the variable chamber, so that the volume of the variable chamber increases, forming a negative pressure chamber, and sucking the residual water in the water outlet chamber into the variable chamber.

2. The water outlet device according to claim 1, characterized in that: The piston is connected to a spring; when water is flowing, the spring is squeezed by the piston to accumulate elastic restoring force; when water is turned off, the piston moves in the direction of increasing the volume of the variable chamber under the action of the elastic restoring force, so that the volume of the variable chamber increases, forming a negative pressure chamber, and sucking the residual water in the water outlet chamber into the variable chamber.

3. The water outlet device according to claim 1 or 2, characterized in that: The variable chamber is provided with a first opening connected to the water outlet chamber. When the water is turned off, the volume of the variable chamber increases to form a negative pressure chamber, and the residual water in the water outlet chamber is sucked into the variable chamber through the first opening.

4. The water outlet device according to claim 3, characterized in that: The water outlet chamber is also provided with a variable cross-section flow channel. After the water flow is accelerated through the variable cross-section flow channel, negative pressure is generated at the connection point between the variable chamber and the water outlet chamber.

5. The water outlet device according to claim 4, characterized in that: The variable cross-section flow channel is provided with a second opening, and the second opening is communicated with the first opening.

6. The water outlet device according to claim 5, characterized in that: The variable cross-sectional flow channel comprises a flow channel with a small cross-sectional area, a flow channel with a first large cross-sectional area, and a flow channel with a second large cross-sectional area, wherein the flow channel with the first large cross-sectional area, the flow channel with a small cross-sectional area, and the flow channel with the second large cross-sectional area are sequentially arranged along the water outlet direction; When water flows, the water flows through the flow channel with a small cross-sectional area to accelerate and generate negative pressure on the flow channel with a variable cross-sectional area, sucking away the air in the variable chamber and reducing the volume of the variable chamber.

7. The water outlet device according to claim 5, characterized in that: The second opening is arranged at the flow passage with the second large cross-sectional area.

8. The water outlet device according to claim 1, characterized in that: The piston is sealed and connected to the inner wall of the water outlet device through a sealing ring.

9. The water outlet device according to claim 8, characterized in that: The sealing ring is a Y-shaped sealing ring.

10. The water outlet device according to claim 5, characterized in that: There are two Y-shaped sealing rings, and the two Y-shaped sealing rings are arranged in opposite directions.

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