Flow control device

Abstract

The utility model discloses a flow control device which comprises an integrated mounting seat, a waterway channel is formed in the integrated mounting seat, and an electromagnetic valve, a pressure reducing valve and a cut-off assembly are sequentially packaged in the integrated mounting seat in the water flow direction; the closure assembly comprises a water inlet cavity and a water outlet cavity, and the closure assembly can adjust the flux of water flowing into the water outlet cavity from the water inlet cavity; a water passing channel of the pressure reducing valve and the waterway channel are coaxially arranged, and the axis of the water passing channel penetrates through the water inlet cavity; a flow meter is installed at the tail end, located on the cut-off assembly, of the integrated installation base, and a water passing channel of the flow meter and the water outlet cavity are coaxially arranged. By means of the reasonable water path design, the problem that flow control is not accurate due to secondary loss of pressure and flow is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of water purification equipment, and in particular to a flow control device. Background Art

[0002] The all-in-one water purifier and heat pump, which can provide both clean water and hot water at room temperature, is gaining recognition and favor among consumers. The all-in-one water purifier and heat pump consists of a filter element and an instant heating element. Its working principle is that the filter element directly outputs the purified water produced after filtering the raw water, or it is further heated by the instant heating element before output. When connected to the faucet, it can achieve the function of providing clean water or hot water at room temperature.

[0003] In order to ensure that the integrated water heater can respond quickly after the user selects the hot water function, it is usually necessary to control the amount of water input from the filter element into the instant heating body to achieve the purpose of quickly producing hot water. This makes the amount of water heated by the instant heating body often much less than the amount of water filtered out by the filter element. Therefore, existing integrated water heaters usually set up a flow control system to control the water flow in the water channel between the filter element and the instant heating body. The flow control system includes a pressure reducing valve, a flow meter and a water pump. Since flow fluctuations may cause the flow control system to fail and affect the outlet water temperature at the rear end, a pressure reducing valve is used to maintain a constant pressure behind the valve, ensure the stability of the flow after the valve and reduce flow fluctuations. At the same time, it is used to protect the downstream water pump from the impact of high-pressure water flow. The flow meter plays the role of monitoring flow data and also plays the role of preventing dry burning of the entire heating system. The water pump adjusts its own duty cycle through the flow data of the flow meter to control the flow pumped out from the water pump, so as to cooperate with the instant heating body to achieve the purpose of instant heating temperature control.

[0004] However, the water pump will generate large vibrations during operation. The existing solution uses a motor-driven shut-off component to replace the water pump to achieve the purpose of noise reduction. However, the existing shut-off component and the pressure reducing valve have the problem of inaccurate flow control due to the pressure and flow loss caused by the unreasonable water channel design after the pressure reducing valve reduces the pressure. Utility Model Content

[0005] The purpose of this application is to provide a flow control device with a reasonable water channel design that effectively avoids the problem of inaccurate flow control caused by the loss of pressure and flow again.

[0006] The technical solutions adopted in this application are:

[0007] A flow control device, comprising an integrated mounting seat, a water channel formed therein, and a solenoid valve, a pressure reducing valve, and a shutoff assembly sequentially encapsulated within the integrated mounting seat along the direction of water flow; the shutoff assembly comprising a water inlet chamber and a water outlet chamber, and capable of regulating the flux of water from the water inlet chamber into the water outlet chamber;

[0008] The water passage of the pressure reducing valve is coaxially arranged with the water channel, and the axis passes through the water inlet cavity; the integrated mounting seat is located at the end of the intercepting assembly and a flow meter is installed, and the water passage of the flow meter is coaxially arranged with the water outlet cavity.

[0009] The flow control system of the heat and air purifier provided in this application also includes the following additional technical features:

[0010] The water channel includes a water inlet section located upstream of the solenoid valve and a water outlet section located downstream of the solenoid valve, and an axis of the water inlet section is arranged at an angle to an axis of the water outlet section.

[0011] A water inlet pipe communicating with the water inlet section is also formed in the integrated mounting seat, and the axis of the water inlet pipe is arranged at an angle to the axis of the water inlet section.

[0012] A return pipe communicating with the water inlet section is also formed in the integrated mounting seat, and a one-way valve for controlling the one-way outflow of water in the water inlet section is provided in the return pipe.

[0013] The interception assembly includes an inlet valve body, an outlet valve body, and a drive unit that drives the inlet valve body to move relative to the outlet valve body. The inlet valve body is provided with a water inlet communicating with the water inlet cavity, and the outlet valve body is provided with a water outlet communicating with the water outlet cavity. When the inlet valve body moves relative to the outlet valve body, the water flow area of the outlet below the inlet is adjusted to achieve the flow rate adjustment. Preferably, the drive unit is a stepping motor.

[0014] The water inlet valve body includes a water inlet valve plate, the water inlet is arranged on the water inlet valve plate, the water outlet valve body includes a water outlet valve plate, the water outlet is arranged on the water outlet valve plate, and the water inlet valve body is driven by the driving unit to make the water inlet valve plate rotate on the water outlet valve plate.

[0015] The driving unit includes an output shaft and a transmission member, and the two ends of the transmission member are respectively connected to the output shaft and the water inlet valve plate; a compressed spring is arranged between the transmission member and the water inlet valve plate, so that the spring applies pressure to press the water inlet valve plate against the water outlet valve plate.

[0016] The water outlet is constructed on the water outlet valve plate as an arc-shaped structure extending along the rotation direction of the water inlet valve plate; when the water inlet valve plate rotates on the water outlet valve plate, the water flow area of the water outlet under the water inlet gradually decreases along the first end of the water outlet toward the second end of the water outlet.

[0017] The water outlet valve body is also provided with a normal temperature water outlet. When the water inlet valve body moves relative to the water outlet valve body, the water inlet is connected to either the water outlet or the normal temperature water outlet.

[0018] The water outlet valve body is further provided with a flow guide pipe connected to the water outlet, and the integrated mounting seat is further formed with a normal temperature water outlet pipe connected to the normal temperature water outlet.

[0019] Due to the adoption of the above technical solution, the technical effects achieved by this application include at least:

[0020] 1. In the flow control device of the present application, the pressure reducing valve withstands the high water pressure at the rear end of the filter element to stabilize the flow and pressure of the intercepting assembly located at the rear side of the pressure reducing valve. The intercepting assembly can adjust the flux of water in the water inlet chamber into the water outlet chamber, and then adjust the water flow delivered to the instant heating body, thereby playing a role of precise flow control, thereby cooperating with the instant heating body to achieve the purpose of precise temperature control of instant heating; the water passage of the pressure reducing valve is coaxially arranged with the water channel and the axis passes through the water inlet chamber, so that the water flow has no obstruction before smoothly entering the water inlet chamber, reducing the problem of inaccurate flow control caused by pressure and flow loss; at the same time, the water passage of the flow meter is coaxially arranged with the water outlet chamber, which also facilitates the water flow to smoothly enter the flow meter without any obstruction, thereby improving the accuracy of flow monitoring.

[0021] 2. This application sets the angle between the water inlet section upstream of the solenoid valve and the water outlet section downstream of the solenoid valve, and also sets the angle between the water inlet pipe and the water inlet section, so that the high-pressure water flow at the rear end of the filter element undergoes two pressure reductions before entering the pressure reducing valve, thereby reducing the workload of the pressure reducing valve and effectively improving the service life of the pressure reducing valve.

[0022] 3. The regulation of water flow in the present application is achieved by driving the water inlet valve body to move through a drive unit. Compared with the solution of using a water pump in the prior art, the drive unit has higher selectivity. For example, in a preferred embodiment, a low-noise stepper motor can be selected as a drive to greatly reduce the vibration noise generated by the flow control system when it is in operation, which is helpful to reduce vibration and noise of the heat and water purification unit. In addition, the movement of the water inlet valve body relative to the water outlet valve body to adjust the water flow is a physical flow control of a mechanical structure, with high functional stability and low risk of failure.

[0023] 4. The water inlet and outlet of the present application are sealed by the water inlet valve plate and the water outlet valve plate. Compared with the sealing body formed by the common silicone in the existing application, the abutting seal does not have the problem of rapid wear of the flexible sealing body. The sealing reliability is higher and the life cycle is longer. Moreover, without installing a sealing body, the limit groove structure of the limit sealing body on the surface where the water inlet valve plate and the water outlet valve plate cooperate with each other is also eliminated, which helps to simplify the structure of the water inlet valve plate and the water outlet valve plate.

[0024] 5. The water inlet valve body of the present application is driven by a driving unit to make the water inlet valve plate rotate relative to the water outlet valve plate. Compared with other forms of movement, the movement space required for the rotational movement is generally smaller. It is only necessary to control the water inlet valve plate to rotate in place around a rotation axis, which helps to make the flow control device compact and miniaturized.

[0025] 6. A compressed spring is provided between the transmission member of the present application and the water inlet valve plate, so that the spring applies pressure to press the water inlet valve plate against the water outlet valve plate. By increasing the pressing force between the water inlet valve plate and the water outlet valve plate, it helps to improve the sealing effect of the water inlet valve plate and the water outlet valve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 This is an assembly diagram of the flow control system of the heat and air purifier provided in an embodiment of the present application;

[0028] Figure 2 This is an exploded diagram of the flow control system of the heat and air purifier provided in an embodiment of the present application;

[0029] Figure 3 A cross-sectional view of the flow control system of the heat and air purifier provided in the embodiment of the present application Figure 1 ;

[0030] Figure 4 for Figure 3 A partial enlarged view of the structure at point A in the middle;

[0031] Figure 5 A schematic structural diagram of the water inlet valve body provided in an embodiment of the present application;

[0032] Figure 6 A schematic structural diagram of the water outlet valve body provided in an embodiment of the present application;

[0033] Figure 7 A cross-sectional view of the flow control system of the heat and air purifier provided in the embodiment of the present application Figure 2 ;

[0034] Figure 8 for Figure 7 A partial enlarged view of the structure at point B in the middle;

[0035] Figure 9 Schematic diagram of the structure of the transmission member provided in the embodiment of the present application Figure 1 ;

[0036] Figure 10 Schematic diagram of the structure of the transmission member provided in the embodiment of the present application Figure 2 ;

[0037] Figure 11 A cross-sectional view of the flow control system of the heat and air purifier provided in the embodiment of the present application Figure 3 .

[0038] List of parts and reference numerals:

[0039] 1 pressure reducing valve;

[0040] 2 driving unit, 21 stepping motor, 22 transmission member, 221 flat hole, 222 limiting rib;

[0041] 3 water inlet valve body, 31 water inlet valve plate, 311 water inlet, 32 limit cylinder, 321 limit slot;

[0042] 4 water outlet valve body, 41 water outlet valve plate, 411 water outlet, 4111 first end, 4112 second end, 412 normal temperature water outlet, 42 guide pipe;

[0043] 5 springs;

[0044] 6 solenoid valves;

[0045] 7. Flow meter;

[0046] 8 integrated mounting seat, 81 water inlet pipe, 82 return pipe, 83 normal temperature water outlet pipe, 84 water inlet section, 85 water outlet section. DETAILED DESCRIPTION

[0047] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0048] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0049] In addition, in the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "lateral", "longitudinal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0050] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0051] In this application, unless otherwise expressly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0052] In the embodiments of the present application, a flow control device is provided. For ease of explanation and understanding, the following contents provided in this application are all explained based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is only a specific example and schematic description and does not constitute a specific limitation of the technical solution provided in this application.

[0053] like Figures 1 to 11 As shown, the flow control device provided in the present application is used for a water purification and heat all-in-one machine, which includes a filter element and an instant heating body. The flow control device is used to deliver the clean water filtered by the filter element to the instant heating body at an adjustable flow rate.

[0054] The flow control device specifically includes an integrated mounting seat 8, in which a water channel is formed. The integrated mounting seat 8 is encapsulated with a solenoid valve 6, a pressure reducing valve 1 and a cut-off assembly in sequence along the direction of water flow. The cut-off assembly includes a water inlet chamber and a water outlet chamber, and the cut-off assembly can adjust the flux of water flowing from the water inlet chamber to the water outlet chamber.

[0055] The water passage of the pressure reducing valve 1 is coaxially arranged with the water channel, and the axis passes through the water inlet cavity; the integrated mounting seat 8 is located at the end of the intercepting assembly and is equipped with a flow meter 7, and the water passage of the flow meter 7 is coaxially arranged with the water outlet cavity.

[0056] The integrated mounting base 8 of the present application is provided with mounting positions corresponding to the solenoid valve 6, the pressure reducing valve 1, the shut-off assembly and the flow meter 7, respectively. The solenoid valve 6, the pressure reducing valve 1, the shut-off assembly and the flow meter 7 are integrated and installed on the integrated mounting base 8, thereby improving the integration of the flow control device and forming a multifunctional flow control integrated structure with strong functionality and stability, high standardization rate, and can match a variety of water purification systems. The solenoid valve 6 controls the on-off of the water path. When the instant heating element needs to be heated by water, the solenoid valve 6 can be opened to connect the water path from the filter element to the pressure reducing valve 1. The flow meter 7 plays the role of monitoring flow and data, and also plays the role of preventing the entire instant heating element from dry burning.

[0057] The pressure-reducing valve 1 of this application withstands the high water pressure at the rear end of the filter element to stabilize the flow and pressure of the intercepting assembly located on the rear side of the pressure-reducing valve 1. The intercepting assembly is located downstream of the pressure-reducing valve 1. The water inlet chamber of the intercepting assembly is connected to the pressure-reducing valve 1, and the water outlet chamber is connected to the flowmeter 7. Water filtered by the filter element passes through the pressure-reducing valve 1, the intercepting assembly, and the flowmeter 7 in sequence and enters the instant heating element. The intercepting assembly can regulate the flux of water from the water inlet chamber into the water outlet chamber, and thus can regulate the water flow delivered to the instant heating element, playing a role in precise flow control, thereby cooperating with the instant heating element to achieve the purpose of precise temperature control of instant heating.

[0058] In this application, the water passage of the pressure reducing valve 1 is coaxially arranged with the water channel and the axis passes through the water inlet chamber, so that the water flow has no obstruction before smoothly entering the water inlet chamber, reducing the problem of inaccurate flow control caused by pressure and flow loss; at the same time, the water passage of the flow meter 7 is coaxially arranged with the water outlet chamber, which also facilitates the water flow to have no obstruction before smoothly entering the flow meter 7, thereby improving the accuracy of flow monitoring.

[0059] As a preferred embodiment of the present application, Figure 3 As shown, the water channel includes a water inlet section 84 located upstream of the solenoid valve 6 and a water outlet section 85 located downstream of the solenoid valve 6 , and the axis of the water inlet section 84 is set at an angle to the axis of the water outlet section 85 .

[0060] Furthermore, a water inlet pipe 81 communicating with the water inlet section 84 is formed in the integrated mounting seat 8 , and the axis of the water inlet pipe 81 is arranged at an angle to the axis of the water inlet section.

[0061] The present application sets the angle between the water inlet section 84 upstream of the solenoid valve 6 and the water outlet section 85 downstream of the solenoid valve 6, preferably vertically, and also sets the angle between the water inlet pipe 81 and the water inlet section 84, preferably vertically, so that the high-pressure water flow at the rear end of the filter element undergoes two pressure reductions before entering the pressure reducing valve 1. Specifically, when the high-pressure water flow enters the water inlet section 84 from the water inlet pipe 81, it collides with the inner wall of the water inlet section 84 for the first time, and the pressure is attenuated for the first time. When entering the water outlet section 85 from the water inlet section 84, it collides with the inner wall of the water outlet section 85 for the second time, and the pressure is attenuated for the second time, thereby reducing the workload of the pressure reducing valve 1 and effectively improving the working life of the pressure reducing valve 1.

[0062] As a preferred embodiment of the present application, Figure 3 As shown, a return pipe 82 connected to the water inlet section 84 is also formed in the integrated mounting seat 8. A one-way valve is provided in the return pipe 82 to control the one-way outflow of water in the water inlet section 84, so that after the clean water produced by the filter element enters the water inlet pipe 81, a part of it can be transported toward the heating body, and the other part of the redundant clean water can flow back through the return pipe 82.

[0063] As a preferred embodiment of the present application, the interception assembly includes a driving unit 2, a water inlet valve body 3 and a water outlet valve body 4. The water inlet valve body 3 is provided with a water inlet 311 connected to the water inlet chamber, and the water outlet valve body 4 is provided with a water outlet 411 connected to the water outlet chamber; the driving unit 2 can drive the water inlet valve body 3 to move relative to the water outlet valve body 4 to adjust the water flow area of the water outlet 411 below the water inlet 311 to achieve flux regulation.

[0064] The interception assembly of the present application is used to control the flow of water transported to the instant heating body. Specifically, if the water flow area of the water outlet 411 below the water inlet 311 increases, the water flow of the filter element to the instant heating body can be increased. If the water flow area below the water inlet 311 and the water outlet 411 decreases, the water flow of the filter element to the instant heating body can be reduced, and then the water flow transported to the instant heating body can be adjusted to play a flow control role, thereby cooperating with the instant heating body to achieve the purpose of instant heating temperature control. Moreover, the regulation of water flow is achieved by driving the water inlet valve body 3 to move by the drive unit 2. Compared with the solution of using a water pump in the prior art, the drive unit 2 has higher selectivity. In this embodiment, a low-noise stepper motor 21 is selected as the drive, so that the vibration noise generated by the flow control system in the working state is greatly reduced, which helps to reduce vibration and noise of the heat and water purification integrated machine. In addition, the way in which the water inlet valve body 3 moves relative to the water outlet valve body 4 to adjust the water flow belongs to a physical flow control of a mechanical structure, with high functional stability and low risk of failure.

[0065] As a preferred embodiment of the present application, Figures 3 to 6As shown, the water inlet valve body 3 includes a water inlet valve plate 31, and the water inlet 311 is arranged on the water inlet valve plate 31. The water outlet valve body 4 includes a water outlet valve plate 41, and the water outlet 411 is arranged on the water outlet valve plate 41. The water inlet valve plate 31 is in contact with the water outlet valve plate 41. The water inlet valve plate 31 is driven by the driving unit 2 to make the water inlet valve plate 31 rotate on the water outlet valve plate 41. Specifically, the water inlet valve body 3 is driven by a stepper motor 21, causing the water inlet valve disc 31 to rotate relative to the water outlet valve disc 41. On the one hand, the noise generated by the stepper motor 21 in operation is relatively low, which helps reduce the noise of the flow control system. The stepper motor 21 can rotate a fixed angle in a set direction. Its rotation is performed step by step at a fixed angle. The angular displacement can be controlled by controlling the number of pulses to achieve the purpose of accurate positioning. Therefore, it is more suitable for adjusting the water flow area of the water outlet 411 of this solution. On the other hand, compared with other forms of movement, the movement space required for rotation is generally smaller. It is only necessary to control the water inlet valve disc 31 to rotate in place around a rotation axis, which helps to make the flow control system compact and miniaturized. Preferably, the water inlet valve disc 31 and the water outlet valve disc 41 can be configured as a disc-shaped structure as a whole, and the drive unit 2 is connected to the central axis of the water inlet valve disc 31 to drive the water inlet valve disc 31 to rotate around its central axis.

[0066] Those skilled in the art will appreciate that the water inlet 311 and the water outlet 411 are sealed by the water inlet valve disc 31 and the water outlet valve disc 41 in abutting manner. Compared with the sealing body formed by the commonly used silicone, the abutting seal does not have the problem of rapid wear of the flexible sealing body, and the sealing reliability is higher and the life cycle is longer. Moreover, without the installation of a sealing body, it is also unnecessary to provide a limiting groove structure of the limiting sealing body on the surface where the water inlet valve disc 31 and the water outlet valve disc 41 match, which helps to simplify the structure of the water inlet valve disc 31 and the water outlet valve disc 41. Preferably, during the processing of the water inlet valve body 3 and the water outlet valve body 4, the surfaces of the water inlet valve body 3 and the water outlet valve body 4 that are in contact with each other can be smoothed by grinding, polishing, etc., which helps to improve the tightness of the water inlet valve body 3 and the water outlet valve body 4, thereby improving the circumferential sealing effect of the water inlet 311 and the water outlet 41.

[0067] Furthermore, in this embodiment, if Figures 5 to 8As shown, the water outlet 411 on the water outlet valve disc 41 is constructed as an arc-shaped structure extending along the rotation direction of the water inlet valve disc 31. When the water inlet valve disc 31 rotates on the water outlet valve disc 41, the water flow area of the water outlet 411 below the water inlet 311 gradually decreases from the first end 4111 of the water outlet 411 toward the second end 4112 of the water outlet 411. Driven by the stepper motor 21, the water inlet valve body 3 causes the water inlet 311 to have a first position corresponding to the first end 4111 of the water outlet 411 and a second position corresponding to the second end 4112 of the water outlet 411. As the water inlet 311 rotates from the first position 4111 to the second position 4112 in the first direction, the water flow area of the water outlet 411 gradually decreases; as the water inlet 311 rotates from the second position 4112 to the first position 4111 in the second direction, the water flow area of the water outlet 411 gradually increases.

[0068] Specifically, taking the aforementioned water inlet valve disc 31 and water outlet valve disc 41 as an example, the water inlet 311 can be set at an eccentric position of the water inlet valve disc 31, and the water outlet 411 can also be set at an eccentric position of the water outlet valve disc 41, and the water outlet 411 can be arranged in an arc around the central axis of the water outlet valve disc 41. When the water inlet valve disc 31 and the water outlet valve disc 41 are in contact, the central axes of the two coincide, and when the water inlet 311 and the water outlet 411 are arranged directly opposite each other, communication is achieved. Figure 8 The figure shows the state when the water inlet 311 and the water outlet 411 are facing each other. Figure 5 The fan-shaped structure shown in the figure may also be other suitable structures, such as circular, triangular, etc. It should be noted that since the water inlet valve plate 31 can switch between the first position and the second position by rotating counterclockwise or clockwise relative to the water outlet valve plate 41, it is necessary to ensure that the water flow area of the water outlet 411 gradually decreases during the process of the water inlet 311 rotating from the first position to the second position along the first direction, and the water flow area of the water outlet 411 gradually increases during the process of the water inlet 311 rotating from the second position to the first position along the second direction; therefore, Figure 6 As shown, when the water flow area of the water outlet 411 needs to be increased or decreased, the water inlet valve plate 31 can be set by the stepping motor 21 to rotate back and forth within an angle α relative to the water outlet valve plate 41. The two ends of the angle α are the lines connecting the center of the water outlet valve plate 41 and the first end 4111 and the second end 4112 of the water outlet 411 respectively. Among them, the first direction is Figure 6 The counterclockwise direction X is shown in the figure, and the second direction is the clockwise direction opposite to the counterclockwise direction X. When the water inlet 311 and the water outlet 411 need to be disconnected, the stepping motor 21 can drive the water inlet valve plate 31 to rotate to the area where the water inlet 311 deviates from the angle α, so that the water inlet 311 and the water outlet 411 are in a staggered state.

[0069] Furthermore, in this embodiment, if Figure 2 and Figure 3 As shown, the drive unit 2 also includes a transmission member 22 connected to the output shaft of the stepper motor 21, and the two ends of the transmission member 22 are respectively connected to the output shaft and the water inlet valve plate; specifically, the transmission member 22 forms a circumferential limit with the output shaft and the water inlet valve body 3, and the transmission member 22 is connected to the output end of the stepper motor 21. The transmission member 22 is used to transmit the power output by the stepper motor 21. The two ends of the transmission member 22 form a circumferential limit with the output shaft and the water inlet valve body 3, respectively, so that the output shaft drives the transmission member 22 to rotate synchronously while the transmission member 22 drives the water inlet valve body 3 to rotate synchronously, which also facilitates the connection between the water inlet valve body 3 and the stepper motor 21. Regarding the way of circumferentially limiting the transmission member 22 and the output shaft, in a preferred embodiment, as shown in FIG. Figure 9 As shown, a flat hole 221 for inserting the output shaft of the stepping motor 21 can be provided on the transmission member 22, and the flat hole 221 and the output shaft are circumferentially limited. Regarding the circumferential limitation of the transmission member 22 and the water inlet valve body 3, in a preferred embodiment, as shown Figure 4 、 Figure 5 and Figure 10 As shown, the water inlet valve body 3 can also include a limiting cylinder 32 connected to the water inlet valve plate 31, the transmission part 22 is inserted into the limiting cylinder 32, a limiting slot 321 is set on the side of the limiting cylinder 32, and the transmission part 22 is provided with a limiting rib 222. The limiting slot 321 and the limiting rib 222 are inserted and matched to achieve circumferential limitation.

[0070] Furthermore, if Figure 4 and Figure 5 As shown, a compressed spring 5 is disposed between the transmission member 22 and the water inlet valve disc 31, so that the spring 5 applies pressure to press the water inlet valve disc 31 against the water outlet valve disc 41. Under the compression of the spring 5, the pressing force between the water inlet valve disc 31 and the water outlet valve disc 41 is increased, which helps to improve the sealing effect of the water inlet valve disc 31 and the water outlet valve disc 41.

[0071] As a preferred embodiment of the present application, Figure 6 and Figure 11As shown, the water outlet valve body 4 is also provided with a normal temperature water outlet 412. When the water inlet valve body 3 moves relative to the water outlet valve body 4, the water inlet 311 is connected to either the water outlet 411 or the normal temperature water outlet 412. By providing the normal temperature water outlet 412, the intercepting assembly can not only control the purified water produced by the filter element to be input into the instant heating unit at a variable flow rate, but also control the purified water produced by the filter element to be directly supplied to the water consumption end. Specifically, the normal temperature water outlet 412 can be connected to the water outlet faucet of the integrated heat and water purification unit. Specifically, the normal temperature water outlet 412 can be set on the water outlet valve plate 41. Taking the aforementioned stepper motor 21 driving the water inlet valve plate 31 to rotate as an example, when the machine needs to discharge normal temperature water, the stepper motor 21 can drive the water inlet valve plate 31 to rotate to a position where the water inlet 311 corresponds to the normal temperature water outlet 412. At this time, the water inlet 311 and the water outlet 411 are no longer connected. The clean water discharged from the filter element reaches the water inlet valve plate 31 through the pressure reducing valve 1, and then is discharged through the normal temperature water outlet 412.

[0072] As a preferred embodiment of this embodiment, Figure 6 As shown, all the aforementioned embodiments of the present application can further include the water outlet valve body 4 further comprising a guide pipe 42 connected to the water outlet valve plate 41, the guide pipe 42 being in communication with the water outlet 411, so that the water outlet valve body 4 delivers water toward the hot body through the guide pipe 42. The inner cavity of the guide pipe 42 is the aforementioned water outlet cavity. It will be understood by those skilled in the art that the water flow entering the water outlet 411 can be converged and guided by the provision of the guide pipe 42, especially for the embodiment in which the aforementioned water outlet 411 is an irregularly shaped structure with a gradually changing area arc, the convergence and guidance of the guide pipe 42 facilitates the stable discharge of the water flow, and also facilitates the connection of the water outlet valve body 4 with downstream components.

[0073] Furthermore, for the embodiment in which the aforementioned water outlet valve body 4 is also provided with a normal temperature water outlet 412, a normal temperature water outlet pipe 83 connected to the normal temperature water outlet 412 is also formed on the integrated mounting seat 8, and the normal temperature water is discharged through the normal temperature water discharge port on the normal temperature water outlet pipe 83.

[0074] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0075] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0076] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A flow control device, characterized in that: The flow control device includes an integrated mounting seat, a water channel is formed in the integrated mounting seat, and a solenoid valve, a pressure reducing valve and a shut-off assembly are sequentially encapsulated in the integrated mounting seat along the direction of water flow; the shut-off assembly includes a water inlet chamber and a water outlet chamber, and the shut-off assembly is capable of regulating the flux of water in the water inlet chamber into the water outlet chamber; The water passage of the pressure reducing valve is coaxially arranged with the water channel, and the axis passes through the water inlet cavity; the integrated mounting seat is located at the end of the intercepting assembly and a flow meter is installed, and the water passage of the flow meter is coaxially arranged with the water outlet cavity.

2. The flow control device according to claim 1, characterized in that: The water channel includes a water inlet section located upstream of the solenoid valve and a water outlet section located downstream of the solenoid valve, and an axis of the water inlet section is arranged at an angle to an axis of the water outlet section.

3. The flow control device according to claim 2, characterized in that: A water inlet pipe communicating with the water inlet section is also formed in the integrated mounting seat, and the axis of the water inlet pipe is arranged at an angle to the axis of the water inlet section.

4. The flow control device according to claim 2 or 3, characterized in that: A return pipe communicating with the water inlet section is also formed in the integrated mounting seat, and a one-way valve for controlling the one-way outflow of water in the water inlet section is provided in the return pipe.

5. The flow control device according to claim 1, characterized in that: The interception assembly includes an inlet valve body, an outlet valve body, and a driving unit that drives the inlet valve body to move relative to the outlet valve body; the inlet valve body is provided with a water inlet connected to the water inlet cavity, and the outlet valve body is provided with a water outlet connected to the water outlet cavity; when the inlet valve body moves relative to the outlet valve body, the water flow area of the water outlet under the water inlet can be adjusted to achieve the regulation of the flux.

6. The flow control device according to claim 5, characterized in that: The water inlet valve body includes a water inlet valve plate, the water inlet is arranged on the water inlet valve plate, the water outlet valve body includes a water outlet valve plate, the water outlet is arranged on the water outlet valve plate, and the water inlet valve body is driven by the driving unit to make the water inlet valve plate rotate on the water outlet valve plate.

7. The flow control device according to claim 6, characterized in that: The driving unit includes an output shaft and a transmission member, and the two ends of the transmission member are respectively connected to the output shaft and the water inlet valve plate; a compressed spring is arranged between the transmission member and the water inlet valve plate, so that the spring applies pressure to press the water inlet valve plate against the water outlet valve plate.

8. The flow control device according to claim 6, characterized in that: The water outlet is constructed on the water outlet valve plate as an arc-shaped structure extending along the rotation direction of the water inlet valve plate; when the water inlet valve plate rotates on the water outlet valve plate, the water flow area of the water outlet under the water inlet gradually decreases along the first end of the water outlet toward the second end of the water outlet.

9. The flow control device according to any one of claims 5 to 8, characterized in that: The water outlet valve body is also provided with a normal temperature water outlet. When the water inlet valve body moves relative to the water outlet valve body, the water inlet is connected to either the water outlet or the normal temperature water outlet.

10. The flow control device according to claim 9, characterized in that: The water outlet valve body is further provided with a flow guide pipe connected to the water outlet, and the integrated mounting seat is further formed with a normal temperature water outlet pipe connected to the normal temperature water outlet.

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