Flow control device of purifying and heating all-in-one machine

Abstract

The utility model discloses a flow control device of a purifying and heating all-in-one machine, the purifying and heating all-in-one machine comprises a filter element and an instant heating body, the flow control device is used for conveying purified water filtered by the filter element to the instant heating body at an adjustable flow, and the flow control device comprises a pressure reducing valve and a flow control assembly located at the downstream of the pressure reducing valve in the fluid flowing direction from the filter element to the instant heating body. The flow control assembly comprises a driving unit, a water inlet valve body and a water outlet valve body, the water inlet valve body is provided with a water inlet communicated with the pressure reducing valve, the water outlet valve body is provided with a water outlet communicated with the instant heating body, and the driving unit can drive the water inlet valve body to move relative to the water outlet valve body so as to adjust the water passing area of the water outlet below the water inlet. According to the flow control device, vibration noise generated in the working state is reduced, shock absorption and noise reduction of the heat purification all-in-one machine are facilitated, in addition, the mode that the water inlet valve body moves relative to the water outlet valve body to adjust the water flow belongs to mechanical structure type physical flow control, the function stability is high, and the fault risk is low.

Description

Technical Field

[0001] The present application relates to the technical field of water purification equipment, and in particular to a flow control device of an all-in-one water purification and heating machine. 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. 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 heating a small amount of water and quickly producing hot water. This makes the amount of water heated by the instant heating body often much smaller than the amount of water filtered out by the filter element. Therefore, existing integrated water heaters usually set a flow control device to control the water flow in the water channel between the filter element and the instant heating body. The flow control device includes a pressure reducing valve, a flow meter and a water pump. The front end of the pressure reducing valve is subject to the high water pressure at the rear end of the filter element, so it is located at the front end of the entire flow control device to stabilize the flow and pressure after the pressure reducing valve. The flow meter plays the role of monitoring the flow and data, and also plays the role of preventing dry burning of the entire heating system. The water pump is located at the end of the flow control device. Since the temperature rise of the instant heating body needs to be achieved through water flow regulation, the water pump adjusts its own duty cycle to limit the flow pumped out from the water pump, so as to cooperate with the instant heating body to achieve the purpose of small flow heating and quickly producing hot water. However, the water pump will generate relatively large vibration noise during operation, which makes the noise generated by the flow control device relatively large, becoming a major pain point in the development trend of vibration and noise reduction of the all-in-one heat and water machine. Utility Model Content

[0003] The present application aims to improve or solve the technical problems in the above-mentioned technologies to at least a certain extent. In order to overcome the technical problem that the flow control device of the existing heat and air purification integrated machine generates large vibration and noise during operation, the present application provides a flow control device for the heat and air purification integrated machine.

[0004] The technical solutions adopted in this application are:

[0005] A flow control device for a water purification and heating integrated machine, the water purification and heating integrated machine comprising a filter element and an instant heating body, the flow control device being used to deliver the clean water filtered by the filter element to the instant heating body at an adjustable flow rate, along the fluid flow direction from the filter element to the instant heating body, the flow control device comprising a pressure reducing valve and a flow control component located downstream of the pressure reducing valve, the flow control component comprising a drive unit, an inlet valve body and a water outlet valve body, the inlet valve body being provided with a water inlet connected to the pressure reducing valve, the water outlet valve body being provided with a water outlet connected to the instant heating body, the drive unit being capable of driving the inlet valve body to move relative to the water outlet valve body to adjust the water flow area of the water outlet below the water inlet.

[0006] The flow control device of the heat and air purifier provided in this application also includes the following additional technical features:

[0007] 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, the water inlet valve plate is in contact with the water outlet valve plate, and the water inlet valve body is driven by the driving unit to make the water inlet valve plate slide along the water outlet valve plate.

[0008] The driving unit includes a stepping motor, and the water inlet valve body is driven by the stepping motor to cause the water inlet valve plate to rotate relative to the water outlet valve plate.

[0009] 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. Under the drive of the stepper motor, the water inlet valve body enables the water inlet to have a first position corresponding to the first end of the water outlet and a second position corresponding to the second end of the water outlet. During the process of the water inlet rotating from the first position toward the second position along the first direction, the water flow area of the water outlet gradually decreases. During the process of the water inlet rotating from the second position toward the first position along the second direction, the water flow area of the water outlet gradually increases.

[0010] The driving unit further comprises a transmission member connected to the output shaft of the stepping motor, and two ends of the transmission member respectively form circumferential limit with the output shaft and the water inlet valve body.

[0011] A compressed spring is provided between the transmission member and the water inlet valve plate, so that the spring applies pressure to make the water inlet valve plate press against the water outlet valve plate.

[0012] The driving unit includes a stepping motor and a screw-nut motion pair driven by the stepping motor. The stepping motor drives the water inlet valve plate to perform linear motion relative to the water outlet valve plate through the screw-nut motion pair.

[0013] The water outlet valve body also includes a guide pipe connected to the water outlet valve plate, and the guide pipe is communicated with the water outlet, so that the water outlet valve body can transport water toward the instant heating element through the guide pipe.

[0014] The water outlet valve body is also provided with a normal temperature water outlet. The water inlet valve body is driven by the driving unit to move relative to the water outlet valve body so that the water inlet is connected to either the water outlet or the normal temperature water outlet.

[0015] The flow control device also includes a solenoid valve and a flow meter. Along the fluid flow direction from the filter element to the instant heating body, the solenoid valve is connected upstream of the pressure reducing valve to control the on-off of the water path from the filter element to the pressure reducing valve, and the flow meter is connected downstream of the flow control component.

[0016] Due to the adoption of the above technical solution, the technical effects achieved by this application include at least:

[0017] 1. The flow control device of the integrated heat and water heater provided in the present application has a pressure reducing valve located at the front end of the flow control device along the direction of fluid flow from the filter element to the instant heat element. 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 flow control component located behind the pressure reducing valve. The flow control component includes a drive unit, an inlet valve body, and an outlet valve body. The drive unit can drive the inlet valve body to move relative to the outlet valve body to adjust the size of the water flow area of the outlet valve body, thereby adjusting the water flow from the outlet valve body to the instant heat element, playing a flow control role, thereby cooperating with the instant heat element to achieve the purpose of heating with a small flow rate and quickly producing hot water. Moreover, the water flow is regulated by the drive unit driving the inlet valve body to move. Compared with the solution of using a water pump in the prior art, the drive unit has a higher selectivity. For example, in a preferred embodiment, a low-noise motor can be selected to significantly reduce the vibration noise generated by the flow control device when it is in operation, which helps to reduce vibration and noise of the integrated heat and water heater. In addition, the way the inlet valve body moves relative to the outlet valve body to adjust the water flow is a physical flow control of a mechanical structure, which has high functional stability and low failure risk.

[0018] 2. The water inlet and the water outlet are sealed by the inlet valve plate and the outlet valve plate. Compared with the sealing body formed by the common silicone in the existing sealing, 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 matching surface of the inlet valve plate and the outlet valve plate is also eliminated, which helps to simplify the structure of the inlet valve plate and the outlet valve plate.

[0019] 3. The water inlet valve body is driven by a stepper motor to make the water inlet valve plate rotate relative to the water outlet valve plate. On the one hand, the noise generated by the stepper motor in working state is relatively small, which helps to reduce the noise of the flow control device. On the other hand, compared with other forms of movement, the movement space required for 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.

[0020] 4. The transmission part is connected to the output end of the stepper motor. The transmission part is used to transmit the power output by the stepper motor. The two ends of the transmission part form circumferential limit with the output shaft and the water inlet valve body respectively, so that the output shaft drives the transmission part to rotate synchronously while the transmission part drives the water inlet valve body to rotate synchronously, which also facilitates the connection between the water inlet valve body and the stepper motor.

[0021] 5. A compressed spring is provided 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. 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

[0022] 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:

[0023] Figure 1 An assembly diagram of the flow control device of the heat and air purifier provided in an embodiment of the present application;

[0024] Figure 2 This is an exploded view of the flow control device of the heat and air purifier provided in an embodiment of the present application;

[0025] Figure 3 A cross-sectional view of the flow control device of the heat and air purifier provided in the embodiment of the present application Figure 1 ;

[0026] Figure 4 for Figure 3 A partial enlarged view of the structure at point A in the middle;

[0027] Figure 5 A schematic structural diagram of the water inlet valve body provided in an embodiment of the present application;

[0028] Figure 6 A schematic structural diagram of the water outlet valve body provided in an embodiment of the present application;

[0029] Figure 7 A cross-sectional view of the flow control device of the heat and air purifier provided in the embodiment of the present application Figure 2 ;

[0030] Figure 8for Figure 7 A partial enlarged view of the structure at point B in the middle;

[0031] Figure 9 Schematic diagram of the structure of the transmission member provided in the embodiment of the present application Figure 1 ;

[0032] Figure 10 Schematic diagram of the structure of the transmission member provided in the embodiment of the present application Figure 2 ;

[0033] Figure 11 A cross-sectional view of the flow control device of the heat and air purifier provided in the embodiment of the present application Figure 3 .

[0034] List of parts and reference numerals:

[0035] 1 pressure reducing valve;

[0036] 2 driving unit, 21 stepping motor, 22 transmission member, 221 flat hole, 222 limiting rib;

[0037] 3 water inlet valve body, 31 water inlet valve plate, 311 water inlet, 32 limit cylinder, 321 limit slot;

[0038] 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;

[0039] 5 springs;

[0040] 6 solenoid valves;

[0041] 7. Flow meter;

[0042] 8 integrated mounting seat, 81 water inlet, 82 return port, 83 normal temperature water discharge port. DETAILED DESCRIPTION

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] In the embodiments of this application, a flow control device for a heat and air conditioning unit is provided. For ease of explanation and understanding, the following content provided in this application is based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is merely a specific example and schematic illustration and does not constitute a specific limitation on the technical solution provided in this application.

[0049] like Figures 1 to 11As shown, the present application provides a flow control device of a water purification and heat integrated machine, which includes a filter element and an instant heating body. The flow control device is used to transport the clean water filtered by the filter element to the instant heating body at an adjustable flow rate, along the fluid flow direction from the filter element to the instant heating body, the flow control device includes a pressure reducing valve 1 and a flow control component located downstream of the pressure reducing valve 1, the flow control component includes a drive unit 2, an inlet valve body 3 and an outlet valve body 4, the inlet valve body 3 is provided with a water inlet 311 that can be communicated with the filter element, and the outlet valve body 4 is provided with a water outlet 411 that can be communicated with the instant heating body, and the drive unit 2 can drive the inlet valve body 3 to move relative to the outlet valve body 4 to adjust the water flow area of the water outlet 411 under the water inlet 311.

[0050] The flow control device of the integrated water purifier and heat machine provided in the present application has a pressure reducing valve 1 located at the front end of the flow control device along the fluid flow direction from the filter element to the instant heating body. It withstands the high water pressure at the rear end of the filter element to stabilize the flow and pressure of the flow control component located on the rear side of the pressure reducing valve 1. The flow control component is located downstream of the pressure reducing valve 1, and the water inlet 311 of the water inlet valve body 3 is connected to the pressure reducing valve 1, and the water outlet 411 of the water outlet valve body 4 is connected to the instant heating body, so that the filter element is connected to the instant heating body through the pressure reducing valve 1 and the flow control component in turn. The flow control component is used to control the flow of water transported toward the instant heating body. Specifically, the flow control component includes a driving unit 2, a water inlet valve body 3 and a water outlet valve body 4. 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 of the water outlet valve body 4 under the water inlet 311 of the water inlet valve body 3. If the water flow area of the water outlet 411 increases, the water flow rate of the filter element to the instant heating body can be increased. If the water flow area of the water outlet 411 decreases, the water flow rate of the filter element to the instant heating body can be reduced, and then the water flow rate delivered to the instant heating body can be adjusted to play a flow control role, so as to cooperate with the instant heating body to achieve the purpose of small-flow heating and rapid hot water output. Moreover, the regulation of water flow is achieved by driving the water inlet valve body 3 to move through the drive unit 2. Compared with the solution of using a water pump in the prior art, the drive unit 2 has higher selectivity. For example, in a preferred embodiment, a low-noise motor can be selected to greatly reduce the vibration noise generated by the flow control device when it is in operation, which helps to reduce shock and noise of the heat and water purification unit. 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 is a physical flow control of a mechanical structure, with high functional stability and low risk of failure.

[0051] The present application does not limit the manner in which the driving unit 2 drives the water inlet valve body 3 to move relative to the water outlet valve body 4. For example, a suitable driving unit 2 can be selected to drive the water inlet valve body 3 to perform rotational motion, linear motion, etc. relative to the water outlet valve body 4, as long as the flux of the water inlet 311 and the water outlet 411 can be adjusted as the water inlet valve body 3 is driven to move.

[0052] As a preferred embodiment of the present application, Figures 3 to 6 As shown, the water inlet valve body 3 includes an inlet valve disc 31, the water inlet 311 is provided on the inlet valve disc 31, and the water outlet valve body 4 includes an outlet valve disc 41, the water outlet 411 is provided on the outlet valve disc 41, the inlet valve disc 31 is in abutment with the outlet valve disc 41, and the water inlet valve disc 31 is driven by the drive unit 2 to slide the inlet valve disc 31 along the outlet valve disc 41. It will be appreciated by those skilled in the art that the inlet 311 and the outlet 411 are sealed by the inlet valve disc 31 and the outlet valve disc 41 in abutment with each other. Compared to sealing with a sealing body formed by common silicone in the prior art, the abutment sealing does not suffer from the problem of rapid wear of the flexible sealing body, resulting in higher sealing reliability and a longer life cycle. Moreover, without the need for a sealing body, the need for a limiting groove structure of a limiting sealing body on the mating surface of the inlet valve disc 31 and the outlet valve disc 41 is eliminated, which helps to simplify the structure of the inlet valve disc 31 and the outlet valve disc 41. Preferably, during the processing of the water inlet valve body 3 and the water outlet valve body 4, grinding, polishing and other processes can be used to smooth the surfaces of the water inlet valve body 3 and the water outlet valve body 4 that are in contact with each other, which helps to improve the tightness of the water inlet valve body 3 and the water outlet valve body 4, and thereby improve the circumferential sealing effect of the water inlet 311 and the water outlet 411.

[0053] As a preferred embodiment of this embodiment, Figure 2 and Figure 3 As shown, the drive unit 2 includes a stepper motor 21. The water inlet valve body 3 is driven by the stepper motor 21 to rotate the water inlet valve disc 31 relative to the water outlet valve disc 41. Those skilled in the art will appreciate that the water inlet valve body 3 is driven by the stepper motor 21 to rotate the water inlet valve disc 31 relative to the water outlet valve disc 41. On the one hand, the noise generated by the stepper motor 21 during operation is relatively low, which helps reduce noise in the flow control device. The stepper motor 21 can rotate a fixed angle in a set direction. Its rotation operates step by step at a fixed angle. The angular displacement can be controlled by controlling the number of pulses to achieve accurate positioning. Therefore, it is more suitable for adjusting the water flow area of the water outlet 411 in this solution. On the other hand, compared with other forms of motion, the motion space required for rotational motion is generally smaller. It only needs to control the water inlet valve disc 31 to rotate in place around a rotation axis, which helps to make the flow control device compact and miniaturized. Preferably, the water inlet valve plate 31 and the water outlet valve plate 41 can be integrally arranged into a disc-shaped structure, and the driving unit 2 is connected to the central axis of the water inlet valve plate 31 to drive the water inlet valve plate 31 to rotate around its central axis.

[0054] Furthermore, in this embodiment, if Figures 5 to 8As shown, the water outlet 411 is constructed on the water outlet valve plate 41 as an arc-shaped structure extending along the rotation direction of the water inlet valve plate 31, and the area of the water outlet 411 gradually decreases from the first end 4111 to the second end 4112. The water inlet valve body 3, driven by the stepping motor 21, makes the water inlet 311 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. During the rotation of the water inlet 311 from the first position toward the second position along the first direction, the water flow area of the water outlet 411 gradually decreases. During the rotation of the water inlet 311 from the second position toward the first position along the second direction, the water flow area of the water outlet 411 gradually increases. 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 during the process of rotating from the first position to the second position along the first direction, the water flow area of the water outlet 411 gradually decreases and during the process of rotating from the second position to the first position along the second direction, the water flow area of the water outlet 411 gradually increases. Therefore, as shown in FIG. Figure 6 As shown, when the water flow area of the water outlet 411 needs to be adjusted, 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. 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.

[0055] Furthermore, in this embodiment, if Figure 2 and Figure 3As 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 form a circumferential limit with the output shaft and the water inlet valve body 3 respectively. 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 circumferential limit between 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.

[0056] 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.

[0057] As another preferred embodiment of this embodiment, the driving unit may include a stepper motor and a screw-nut kinematic pair driven by the stepper motor, wherein the stepper motor drives the water inlet valve disc to perform linear motion relative to the water outlet valve disc via the screw-nut kinematic pair. Different from the aforementioned embodiment in which the water inlet valve disc is driven to perform rotational motion by the stepper motor, this embodiment drives the water inlet valve disc to perform linear motion through the drive of the stepper motor and the transmission of the screw-nut kinematic pair. Specifically, the water outlet can be extended in a straight line and have a tapered structure with a large area at one end and a small area at the other end. The water inlet valve disc moves back and forth along the straight line, causing the water inlet to switch positions between the two ends of the water outlet, thereby adjusting the flux between the two ends.

[0058] As a preferred embodiment of this embodiment, Figure 6As shown, all the aforementioned embodiments of the present application may 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 instant heating element through the guide pipe 42. It will be understood by those skilled in the art that the provision of the guide pipe 42 can converge and guide the water flow entering the water outlet 411, especially for the aforementioned embodiment in which the water outlet 411 is an irregularly shaped arc with a gradually varying area. 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.

[0059] As a preferred embodiment of the present application, Figure 6 and Figure 11 As shown, the water outlet valve body 4 is also provided with a normal temperature water outlet 412. The water inlet valve body 3 is driven by the drive unit 2 to move relative to the water outlet valve body 4, so that 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 flow control component can not only control the purified water produced by the filter element to be input into the instant heating body in a variable flow manner, but also control the purified water produced by the filter element to be directly supplied to the water use 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.

[0060] As a preferred embodiment of the present application, Figures 1 to 3 As shown, the flow control device also includes a solenoid valve 6 and a flow meter 7. Along the direction of fluid flow from the filter element to the instant heating element, the solenoid valve 6 is connected upstream of the pressure reducing valve 1 to control the on / off of the water path from the filter element to the pressure reducing valve 1, and the flow meter 7 is connected downstream of the flow control component. 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 not only monitors the flow rate and data, but also prevents the entire instant heating element from drying out.

[0061] In a preferred embodiment, Figures 1 to 3 as well as Figure 11As shown, the flow control device can also include an integrated mounting base 8, on which mounting positions corresponding to the solenoid valve 6, the pressure reducing valve 1, the flow control component and the flow meter 7 are respectively provided, as well as a water channel that can connect the pressure reducing valve 1, the flow control component and the flow meter 7 in sequence. The integrated mounting base 8 can also be provided with a water inlet 81 connected to the pressure reducing valve 6 and a return port 82 connected to the water inlet 81, so that after the clean water produced by the filter element enters from the water inlet 81, a part of it can be transported toward the instant heating body, and the other part of the redundant clean water can be returned through the return port 82. For the embodiment in which the water outlet valve body 4 is also provided with a normal temperature water outlet 412, a normal temperature water discharge port 83 connected to the normal temperature water outlet 412 can also be provided on the integrated mounting base 8. The solenoid valve 6, the pressure reducing valve 1, the flow control component and the flow meter 7 can be 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.

[0062] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0063] 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.

[0064] 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 for a water purification and heating unit, the water purification and heating unit comprising a filter element and an instant heating element, the flow control device being used to deliver the purified water filtered by the filter element to the instant heating element at an adjustable flow rate, characterized in that: Along the fluid flow direction from the filter element to the instant heating body, the flow control device includes a pressure reducing valve and a flow control component located downstream of the pressure reducing valve, the flow control component includes a driving unit, an inlet valve body and a water outlet valve body, the inlet valve body is provided with a water inlet connected to the pressure reducing valve, the water outlet valve body is provided with a water outlet connected to the instant heating body, and the driving unit can drive the inlet valve body to move relative to the outlet valve body to adjust the water flow area of the water outlet under the water inlet.

2. The flow control device of the heat and air conditioning machine according to claim 1, 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, the water inlet valve plate is in contact with the water outlet valve plate, and the water inlet valve body is driven by the driving unit to make the water inlet valve plate slide along the water outlet valve plate.

3. The flow control device of the heat and air conditioning integrated machine according to claim 2, characterized in that: The driving unit includes a stepping motor, and the water inlet valve body is driven by the stepping motor to cause the water inlet valve plate to rotate relative to the water outlet valve plate.

4. The flow control device of the heat and air conditioning integrated machine according to claim 3, 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. Under the drive of the stepper motor, the water inlet valve body enables the water inlet to have a first position corresponding to the first end of the water outlet and a second position corresponding to the second end of the water outlet. During the process of the water inlet rotating from the first position toward the second position along the first direction, the water flow area of the water outlet gradually decreases. During the process of the water inlet rotating from the second position toward the first position along the second direction, the water flow area of the water outlet gradually increases.

5. The flow control device of the heat and air conditioning integrated machine according to claim 3, characterized in that: The driving unit further comprises a transmission member connected to the output shaft of the stepping motor, and two ends of the transmission member respectively form circumferential limit with the output shaft and the water inlet valve body.

6. The flow control device of the heat and air conditioning integrated machine according to claim 5, characterized in that: A compressed spring is provided between the transmission member and the water inlet valve plate, so that the spring applies pressure to make the water inlet valve plate press against the water outlet valve plate.

7. The flow control device of the heat and air conditioning integrated machine according to claim 2, characterized in that: The driving unit includes a stepping motor and a screw-nut motion pair driven by the stepping motor. The stepping motor drives the water inlet valve plate to perform linear motion relative to the water outlet valve plate through the screw-nut motion pair.

8. The flow control device of the heat and air conditioning integrated machine according to any one of claims 2 to 7, characterized in that: The water outlet valve body also includes a guide pipe connected to the water outlet valve plate, and the guide pipe is communicated with the water outlet, so that the water outlet valve body can transport water toward the instant heating element through the guide pipe.

9. The flow control device of the heat and air conditioning integrated machine according to any one of claims 1 to 7, characterized in that: The water outlet valve body is also provided with a normal temperature water outlet. The water inlet valve body is driven by the driving unit to move relative to the water outlet valve body so that the water inlet is connected to either the water outlet or the normal temperature water outlet.

10. The flow control device of the heat and air conditioning integrated machine according to any one of claims 1 to 7, characterized in that: The flow control device also includes a solenoid valve and a flow meter. Along the fluid flow direction from the filter element to the instant heating body, the solenoid valve is connected upstream of the pressure reducing valve to control the on-off of the water path from the filter element to the pressure reducing valve, and the flow meter is connected downstream of the flow control component.

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