Flow adjusting device and water heater comprising same

Abstract

The utility model provides a flow regulating device and a water heater including the same, the flow regulating device comprises a control assembly and a shell, an inlet passage and a main passage are arranged in the shell, the control assembly comprises a control body and a sealing element, and the control body drives the sealing element to move back and forth along the main circulation direction so as to enable the main passage and the inlet passage to be communicated or blocked; a flow stabilizing assembly is arranged in the inlet passage and comprises a flow adjusting part, at least one through hole is formed in the flow adjusting part, the inlet passage is communicated with the main passage through the through hole, and the flow adjusting part is used for adjusting the opening size of the through hole according to the pressure so as to adjust the flow passing through the through hole. According to the flow adjusting device and the water heater comprising the flow adjusting device, the opening size of the through hole of the flow adjusting piece is adjusted through the pressure, the flow of the through hole is effectively adjusted, the flow stabilizing and adjusting function needed by the water heater in the normal use state is achieved, and when the water heater is in the pressurizing or circulating working state, the flow is increased, and the pipeline resistance is reduced; the noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a flow regulating device and a water heater comprising the same. Background Art

[0002] Existing gas water heaters require a flow regulator assembly to reduce flow fluctuations and limit the maximum flow under normal water use conditions to ensure the user's bathing experience, such as keeping the water outlet temperature stable and the water temperature reaching the set temperature. However, the flow regulator will increase pipeline resistance and generate noise when in the pressurized and circulating state, and reduce the circulation flow and pressurization effect (flow after pressurization). Therefore, existing water heaters lack a suitable flow regulating device that can effectively adjust the flow according to the pressure, which can enable the flow regulator and other flow regulators to play a normal flow stabilizing role when the water heater is in normal water use, and can also reduce pipeline resistance and noise when the water heater is in the pressurized and circulating state. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defect in the prior art that there is a lack of a suitable flow regulating device that can effectively regulate the flow according to the pressure, so as to satisfy both the flow stabilization function of the water heater during normal water use and the reduction of pipeline resistance during pressurization or circulation working state, and to provide a flow regulating device and a water heater including the same.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A flow regulating device, the flow regulating device comprising a control assembly and a housing, wherein an inlet passage and a main passage are arranged in the housing, the control assembly comprising a control body and a sealing member, the control body driving the sealing member to move back and forth along the main flow direction of the main passage, so that the main passage is connected to or blocked from the inlet passage;

[0006] A flow stabilizing component is provided in the inlet passage, and the flow stabilizing component includes a flow regulating component. The flow regulating component is provided with at least one through hole. The inlet passage is connected to the main passage via the through hole. The flow regulating component is used to adjust the opening size of the through hole according to the pressure to adjust the flow passing through the through hole.

[0007] In this solution, the main body drives the seal to move back and forth along the main flow direction of the main passage to realize the first channel that is connected or blocked between the main passage and the inlet passage; the through hole of the flow regulating member realizes the second channel that is connected and the flow regulation between the main passage and the inlet passage. When the pipeline is in a normal use state without pressurization, by blocking the first channel, the second channel meets the flow required for normal use, and the flow regulating member of the second channel adjusts the opening size of the through hole by the pressure size to adjust the flow through the through hole, thereby realizing the steady flow regulation effect; when the pipeline is in a pressurized or circulating working state, the fluid pressure of the inlet passage becomes larger, and by connecting the first channel, the inlet and outlet sides of the through hole (from the inlet passage to the main passage) are both in the first channel in the connected state, so that the pressure difference on the inlet and outlet sides of the through hole is reduced or eliminated, and the flow regulating member does not produce the flow regulation effect, so that the second channel maintains the connected state of the maximum flow, and realizes that both channels (the first channel and the second channel) are in the connected state, increasing the flow and reducing the pipeline resistance.

[0008] Preferably, the flow stabilizing component further comprises a pressure-bearing component, the flow regulating component is an elastic component, the pressure-bearing component is in contact with the elastic component, and the elastic component is provided with the through hole;

[0009] The pressure-bearing component is used to bear the fluid pressure and elastically press the elastic member to adjust the opening size of the through hole.

[0010] In this solution, the fluid pressure is borne by the pressure-bearing component and the pressure is transmitted to the flow regulating component; the flow regulating component adopts an elastic component to realize the elastic adjustment of the opening size of the through hole. The opening size of the through hole can be adjusted in real time according to the pressure change, thereby reducing the hysteresis of the flow regulation and realizing timely steady flow regulation response.

[0011] Preferably, the elastic member is an elastic sheet, one end of the elastic sheet is connected to the pressure-bearing component, the other end of the elastic sheet is connected to the base of the flow stabilizing component or the supporting structure in the shell, and the middle part of the elastic sheet is provided with the through hole.

[0012] In this solution, an elastic sheet is used as the elastic part, which is easy to manufacture. A linear proportional relationship between the pressure change and the change in the distance between the two ends of the elastic sheet (i.e., the amount of compression) is established, thereby achieving a linear proportional relationship between the opening size of the through hole and the pressure change, which is beneficial to improving the accuracy of steady flow regulation.

[0013] Preferably, the flow stabilizing component is annular in shape, and is sleeved on the outer wall of the main passage;

[0014] The flow stabilizing component further includes a base, and the elastic member is clamped between the pressure-bearing component and the base.

[0015] In this solution, the flow stabilizing component adopts an annular structure. When the fluid passes through the annular flow stabilizing component, a circular flow is formed, which is beneficial to improving the flow stabilizing effect. By clamping the elastic member between the pressure-bearing component and the base, the position of the elastic member is fixed, and the pressure transmitted by the pressure-bearing component directly acts on the elastic member, that is, the elastic deformation of the elastic member directly reflects the pressure change.

[0016] Preferably, the housing comprises a first housing and a second housing;

[0017] The first shell includes a first part and a second part in sequence along the main flow direction, the first part includes an inner shell and an outer shell spaced apart in a radial direction, the inner cavity of the inner shell is connected to the inner cavity of the second part to form the main flow passage, and the flow stabilizing component is sleeved on the outer surface of the inner shell;

[0018] The gap cavity between the outer shell and the inner shell and the inner cavity of the second shell form the inlet passage.

[0019] In this solution, the first part of the first shell forms an annular spacing cavity through the radially spaced inner shell and outer shell. The fluid flows from the inner cavity of the second shell into the annular spacing cavity, and the fluid pressure is buffered, which is beneficial to the flow stabilization effect.

[0020] Preferably, the sealing member comprises an upper seal and a lower seal arranged in sequence along the main flow direction;

[0021] Two connecting pieces and a sealing piston are provided on the surface of the upper seal along the main flow direction, the two connecting pieces are respectively engaged with the lower seal, the sealing piston passes through the lower seal and is movably connected with the main flow path and seals and cooperates, the control body drives the upper seal to move back and forth along the main flow direction, and drives the sealing piston to block or open the main flow path;

[0022] The two connecting members are both placed in the gap cavity between the outer shell and the inner shell, one of the two connecting members is provided with an inner hole, the inner hole communicates with the gap cavity and the inner cavity of the upper seal, and the other of the two connecting members has no inner hole.

[0023] In this solution, the upper seal and the lower seal are connected by two connecting parts and the lower seal is connected, and the main passage is blocked or opened by the sealing piston, which is movably connected and sealed with the main passage. Therefore, when the control body drives the upper seal to move, it also drives the movement of the lower seal, opens or closes the inner cavity of the inner shell (which is part of the main passage) and the annular gap cavity (which is part of the inlet passage), and realizes the connection or blocking of the main passage and the inlet passage. Both connecting parts are placed in the gap cavity, and an inner hole is set through one of the two connecting parts, so that the annular gap cavity is connected with the inner cavity of the upper seal, so that when the lower seal closes the main passage, the fluid flows from the inner hole of the connecting part into the upper seal, and the fluid pressure formed presses on the lower seal, thereby improving the sealing effect.

[0024] Preferably, the control body comprises a solenoid valve assembly and a push rod, the push rod is connected to the sealing member, and the solenoid valve assembly is used to be electrically connected to an external power source to drive the push rod and drive the sealing member to move along the main flow direction.

[0025] In this solution, the magnetic force generated when the solenoid valve assembly is energized drives the push rod to produce linear motion, thereby driving the seal to move along the main flow direction, thereby achieving the blocking of the main path.

[0026] Preferably, the control body further comprises a reset member, the reset member is connected to the push rod, and the reset member is used to drive the push rod and drive the sealing member to move in the opposite direction of the main flow direction when the solenoid valve assembly is powered off.

[0027] In this solution, when the solenoid valve assembly is powered off and has no magnetic power, the reset member drives the push rod and drives the sealing member to move in the opposite direction of the main flow direction, thereby opening the main passage and connecting the main passage with the inlet passage.

[0028] Preferably, the flow regulating member is provided with a plurality of the through holes.

[0029] In this solution, by providing a plurality of through holes on the flow regulating member, the adjustable flow range is increased, the pressure received at various positions on the flow regulating member is balanced, and a better steady flow regulating effect is achieved.

[0030] A water heater, the water heater comprising the flow regulating device and the control system as described above, the control system being electrically connected to the control body, the water heater comprising a normal working mode, a boost working mode or a circulation working mode;

[0031] When the water heater is in a normal working mode, the control system is used to control the control body to be energized, and drive the sealing member to move along the main flow direction to block the main flow passage;

[0032] When the water heater is in a boost working mode or a circulation working mode, the control system is used to control the control body to be powered off, and drive the sealing element to move in the opposite direction of the main flow direction to connect the main passage with the inlet passage.

[0033] In the present scheme, the water heater adopts the above-mentioned flow regulating device, so that when the water heater is in the normal working mode, the control body is energized to drive the seal to block the main path, the first channel is blocked, and the second channel is used to meet the flow required for normal use. The flow regulating member of the second channel adjusts the opening size of the through hole by the pressure, adjusts the flow through the through hole, and realizes the steady flow regulation effect; and when the water heater is in the boost working mode or the circulation working mode, the control body is de-energized to drive the seal to move in the opposite direction to connect the main path with the inlet path, and the flow regulating member does not produce the flow regulation effect, so that the second channel maintains the connected state of maximum flow, so that both channels (the first channel and the second channel) are in the connected state, thereby increasing the flow, reducing the pipeline resistance, and reducing the noise.

[0034] The positive progressive effect of the utility model is that the flow regulating device and the water heater including the same can adjust the opening size of the through hole of the flow regulating member by adjusting the pressure, thereby effectively adjusting the flow through the through hole, which not only satisfies the steady flow regulation required by the water heater in normal use, but also increases the flow rate when the water heater is in a pressurized or circulating working state, reduces the pipeline resistance and reduces the noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the three-dimensional structure of the flow regulating device of Example 1 of the utility model.

[0036] Figure 2 This is a schematic diagram of the half-section structure of the flow regulating device of Example 1 of the utility model.

[0037] Figure 3 This is a schematic diagram of the structure of the flow stabilizing component of Example 1 of the utility model.

[0038] Figure 4 This is a schematic diagram of the half-section structure of the flow stabilizing component of Example 1 of the utility model.

[0039] Figure 5a The structure diagram of the upper seal of Example 1 of the utility model is shown in FIG. Figure 1 .

[0040] Figure 5b The structure diagram of the upper seal of Example 1 of the utility model is shown in FIG. Figure 2 .

[0041] Figure 6This is a schematic structural diagram of the lower seal of Example 1 of the utility model.

[0042] Description of reference numerals:

[0043] Flow regulating device 1

[0044] Control Component 2

[0045] Control body 21

[0046] Solenoid valve assembly 210

[0047] Putter 211

[0048] Seal 22

[0049] Upper seal 221

[0050] Connector 2210

[0051] Inner hole 2211

[0052] Sealing piston 2212

[0053] Lower seal 222

[0054] Reset 212

[0055] Shell 3

[0056] First housing 31

[0057] Part 1 310

[0058] Inner shell 311

[0059] Shell 312

[0060] Gap cavity 313

[0061] Part II 314

[0062] Second housing 32

[0063] Entrance path 33

[0064] Main Road Access 34

[0065] Flow stabilization component 4

[0066] Flow regulating element 41

[0067] Elastic sheet 410

[0068] Through hole 411

[0069] Pressure bearing parts 42

[0070] Base 43

[0071] Support rod 431

[0072] Main flow direction A. DETAILED DESCRIPTION

[0073] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0074] Example 1

[0075] This embodiment provides a flow regulating device 1, which can be used in a water heater or other products that require flow regulation.

[0076] like Figure 1-6 As shown, the flow regulating device 1 includes a control assembly 2 and a housing 3. The housing 3 is a right-angled pipe, in which an inlet passage 33 and a main passage 34 are arranged. The control assembly 2 includes a control body 21 and a seal 22. The control body 21 drives the seal 22 to move back and forth along the main flow direction A of the main passage 34, so that the main passage 34 is connected to or blocked from the inlet passage 33.

[0077] A flow stabilizing component 4 is provided in the inlet passage 33, and the flow stabilizing component 4 includes a flow regulating component 41. A plurality of through holes 411 are provided on the flow regulating component 41. The inlet passage 33 is connected to the main passage 34 via the through holes 411. The flow regulating component 41 is used to adjust the opening size of the through holes 411 according to the pressure to adjust the flow through the through holes 411.

[0078] The flow regulating device 1 drives the seal 22 to move back and forth along the main flow direction A of the main passage 34 by controlling the main body 21, thereby realizing a first channel connected or blocked between the main passage 34 and the inlet passage 33; and realizes a second channel for connecting and regulating the flow between the main passage 34 and the inlet passage 33 through the through hole 411 of the flow regulating member 41. When the pipeline is in normal use without pressurization, by blocking the first channel, the second channel meets the flow required for normal use, and the flow regulating member 41 of the second channel adjusts the opening size of the through hole 411 by the pressure, adjusts the flow through the through hole 411, and realizes the steady flow regulation effect; when the pipeline is in a pressurized or circulating working state, the fluid pressure of the inlet passage 33 becomes larger, and by connecting the first channel, both the inlet and outlet sides of the through hole 411 (from the inlet passage 33 to the main passage 34) are in the first channel in a connected state, so that the pressure difference on both sides of the inlet and outlet of the through hole 411 is reduced or eliminated, and the flow regulating member 41 does not produce a flow regulation effect, so that the second channel maintains a connected state of maximum flow, so that both channels (the first channel and the second channel) are in a connected state, the flow is increased, and the pipeline resistance is reduced.

[0079] like Figure 2As shown, specifically, the control body 21 includes a solenoid valve assembly 210 and a push rod 211. The solenoid valve assembly 210 is specifically a water solenoid valve assembly 210. The water solenoid valve assembly 210 is electrically connected to an external power source. The driving coil and the iron core in the water solenoid valve assembly 210 cooperate to generate magnetic power when powered on. The magnetic power can drive the push rod 211 to move linearly along the main flow direction A. The push rod 211 is connected to the sealing member 22, so the push rod 211 can drive the sealing member 22 to move along the main flow direction A, thereby achieving the blocking of the main passage 34.

[0080] The control body 21 further includes a reset member 212, which is specifically a reset spring connected to the push rod 211. When the push rod 211 moves along the main flow direction A, the reset spring is compressed to generate a reset elastic force. When the solenoid valve assembly 210 is powered off, the reset elastic force of the reset spring drives the push rod 211 and drives the sealing member 22 to move in the opposite direction of the main flow direction A, so as to open the main path 34, so that the main path 34 is connected to the inlet path 33.

[0081] In other embodiments, there are various forms of power to drive the sealing member 22 to move back and forth, and other forms of power, such as pneumatic drive components, may also be used as needed. The reset member 212 may also be other devices capable of achieving a reset effect.

[0082] like Figure 3-4 As shown, in this embodiment, the flow stabilizing component 4 is specifically an annular structure, which includes a pressure-bearing component 42 and a base 43 in addition to a flow regulating component 41. The flow regulating component 41 is an elastic component, which is clamped between the pressure-bearing component 42 and the base 43. The base 43 is an annular structure, and its inner ring is provided with a plurality of support rods 431 spaced apart along the circumference, forming a leaky structure, so that the through hole 411 is exposed between the spaced support rods 431 and connected to the main passage 34. The top of the base 43 has an annular boss, and the pressure-bearing component 42 and the elastic component are limited between the annular boss at the top of the base 43 and the bottom platform, and can slide freely up and down along the support rods 431. The top surface of the pressure-bearing component 42 is an annular surface with a large area. The fluid pressure in the inlet passage 33 acts on this annular surface and elastically presses the elastic component to adjust the opening size of the through hole 411.

[0083] The fluid pressure is borne by the pressure-bearing component 42 and transmitted to the flow regulating component 41; the flow regulating component 41 adopts an elastic component to realize the elastic adjustment of the opening size of the through hole 411. The opening size of the through hole 411 can be adjusted in real time according to the pressure change, thereby reducing the hysteresis of the flow regulation and realizing timely steady flow regulation response.

[0084] In this example, the elastic member is specifically a V-shaped elastic sheet 410 , one end of the elastic sheet 410 is connected to the pressure-bearing component 42 , the other end of the elastic sheet 410 is connected to the base 43 of the flow stabilizing component 4 , and a through hole 411 is provided in the middle portion of the elastic sheet 410 .

[0085] The elastic sheet 410 is used as the elastic part, which is easy to manufacture and establishes a linear proportional relationship between the pressure change and the change in the distance between the two ends of the elastic sheet 410 (i.e., the amount of compression), thereby achieving a linear proportional relationship between the opening size of the through hole 411 and the pressure change, which is beneficial to improving the accuracy of steady flow regulation.

[0086] In other embodiments, the flow regulating member 41 is not limited to the sheet-shaped elastic sheet 410, and may also be made of other elastic materials, such as a rubber elastic member; or the flow regulating member 41 may also be other non-elastic components that can adjust the opening size of the through hole 411 according to the fluid pressure. The shape of the elastic member or elastic sheet 410 may also be adjusted accordingly according to needs or specific matching structures, such as a U-shaped elastic sheet 410.

[0087] like Figure 2 As shown, the shell 3 includes a first shell 31 and a second shell 32; the first shell 31 includes a first part 310 and a second part 314 in sequence along the main flow direction A, and the first part 310 includes an inner shell 311 and an outer shell 312 arranged in radial intervals, and the inner shell 311 and the outer shell 312 form an annular interval cavity. The inner cavity of the inner shell 311 is connected to the inner cavity of the second part 314 to form a main passage 34. The flow stabilizing component 4 is sleeved on the outer surface of the inner shell 311 and is located in the annular interval cavity. The gap cavity 313 between the outer shell 312 and the inner shell 311 forms an inlet passage 33 with the inner cavity of the second shell 32.

[0088] In this embodiment, the flow stabilizing component 4 is annular in shape, and is sleeved on the outer wall of the main passage 34, resting on the step surface of the annular spaced cavity. The fluid flows from the inner cavity of the second shell 32 into the annular spaced cavity, and forms a circular flow when passing through the annular flow stabilizing component 4. The fluid pressure is buffered, which is beneficial to improving the flow stabilizing effect. By clamping the elastic member between the pressure-bearing component 42 and the base 43, the position of the elastic member is fixed, and the pressure transmitted by the pressure-bearing component 42 directly acts on the elastic member, that is, the elastic deformation of the elastic member directly reflects the pressure change.

[0089] In other embodiments, according to the specific matching needs of the structure, the specific shape and structure of the inlet passage 33 and the main passage 34 in the shell 3 can be adjusted accordingly according to the needs of the flow regulation effect, and it is not necessarily a ring structure. The placement of the flow regulating member 41 can also be adjusted accordingly according to the internal structure of the shell 3. For example, the other end of the elastic sheet 410 can also directly abut against the step surface at the annular spaced cavity, and the flow regulating member 41 can have no base 43, but use the step surface of the shell 3 at this annular spaced cavity as a support structure for placing the flow regulating member 41.

[0090] like Figure 2 , Figure 5a , Figure 5b and Figure 6 As shown, the seal 22 includes an upper seal 221 and a lower seal 222 which are sequentially arranged along the main flow direction A; two connectors 2210 and a sealing piston 2212 are provided on the surface of the upper seal 221 along the main flow direction A, the two connectors 2210 are respectively engaged with the lower seal 222, the sealing piston 2212 passes through the lower seal 222 and is movably connected and sealed with the main path 34, the control body 21 drives the upper seal 221 to move back and forth along the main flow direction A, and drives the sealing piston 2212 to block or open the main path 34; the two connectors 2210 are both placed in the gap cavity 313 between the outer shell 312 and the inner shell 311, one of the two connectors 2210 is provided with an inner hole 2211, the inner hole 2211 connects the gap cavity 313 and the inner cavity of the upper seal 221, and the other of the two connectors 2210 has no inner hole 2211.

[0091] The upper seal 221 and the lower seal 222 are connected by two connecting pieces 2210 and the lower seal 222, and the upper seal 221 and the lower seal 222 are connected in a linkage manner. The main passage 34 is blocked or opened by the sealing piston 2212, and the upper seal 221 is moved by the control body 21, and the lower seal 222 is also moved, and the inner cavity of the inner shell 311 (which is a part of the main passage 34) and the annular spacer cavity (which is a part of the inlet passage 33) are opened or closed, and the main passage 34 and the inlet passage 33 are connected or blocked. By placing both connectors 2210 in the gap cavity 313 and setting an inner hole 2211 through one of the two connectors 2210, the annular gap cavity 313 is connected with the inner cavity of the upper seal 221, so that when the lower seal 222 closes the main passage 34, the fluid flows from the inner hole 2211 of the connector 2210 into the upper seal 221, and the resulting fluid pressure presses on the lower seal 222 to improve the sealing effect.

[0092] In this embodiment, by providing a plurality of through holes 411 on the flow regulating member 41, the adjustable flow range is increased, the pressure received at various positions on the flow regulating member 41 is balanced, and a better steady flow regulating effect is achieved.

[0093] In other embodiments, depending on the application type, the flow regulating device 1 can be used in a water heater or other products that require flow regulation.

[0094] Example 2

[0095] This embodiment provides a water heater, which includes a flow regulating device 1 and a control system as in Embodiment 1, the control system is electrically connected to a control body 21, and the water heater includes a normal working mode, a boost working mode or a circulation working mode;

[0096] When the water heater is in a normal working mode, the control system is used to control the control body 21 to be energized, driving the sealing member 22 to move along the main flow direction A to block the main flow passage 34;

[0097] When the water heater is in the boost mode or the circulation mode, the control system is used to control the control body 21 to be powered off, and drive the seal 22 to move in the opposite direction of the main flow direction A to connect the main passage 34 with the inlet passage 33.

[0098] The water heater adopts the flow regulating device 1 as in Example 1, so that when the water heater is in the normal working mode, the control body 21 is energized to drive the seal 22 to block the main path 34, the first channel is blocked, and the second channel is used to meet the flow required for normal use. The flow regulating member 41 of the second channel adjusts the opening size of the through hole 411 by the pressure, adjusts the flow through the through hole 411, and realizes the steady flow regulation effect; when the water heater is in the boost working mode or the circulation working mode, the control body 21 is de-energized to drive the seal 22 to move in the opposite direction, and the main path 34 is connected with the inlet path 33. The flow regulating member 41 does not produce a flow regulation effect, so that the second channel maintains the connection state of the maximum flow, so that the two channels (the first channel and the second channel) are both in the connection state, which increases the flow, reduces the pipeline resistance, and reduces the noise.

[0099] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A flow regulating device, characterized in that: The flow regulating device comprises a control assembly and a housing, wherein an inlet passage and a main passage are arranged in the housing, and the control assembly comprises a control body and a sealing member, wherein the control body drives the sealing member to move back and forth along the main flow direction of the main passage, so that the main passage is connected to or blocked from the inlet passage; A flow stabilizing component is provided in the inlet passage, and the flow stabilizing component includes a flow regulating component. The flow regulating component is provided with at least one through hole. The inlet passage is connected to the main passage via the through hole. The flow regulating component is used to adjust the opening size of the through hole according to the pressure to adjust the flow passing through the through hole.

2. The flow regulating device according to claim 1, characterized in that: The flow stabilizing assembly further includes a pressure-bearing component, the flow regulating component is an elastic component, the pressure-bearing component is in contact with the elastic component, and the elastic component is provided with the through hole; The pressure-bearing component is used to bear the fluid pressure and elastically press the elastic member to adjust the opening size of the through hole.

3. The flow regulating device according to claim 2, characterized in that: The elastic member is an elastic sheet, one end of which is connected to the pressure-bearing component, the other end of which is connected to the base of the flow stabilizing component or the supporting structure in the shell, and the middle part of the elastic sheet is provided with the through hole.

4. The flow regulating device according to claim 2, characterized in that: The flow stabilizing component is annular in shape and is sleeved on the outer wall of the main passage. The flow stabilizing component also includes a base, and the elastic member is clamped between the pressure-bearing component and the base.

5. The flow regulating device according to claim 4, characterized in that: The housing comprises a first housing and a second housing; The first shell includes a first part and a second part in sequence along the main flow direction, the first part includes an inner shell and an outer shell spaced apart in a radial direction, the inner cavity of the inner shell is connected to the inner cavity of the second part to form the main flow passage, and the flow stabilizing component is sleeved on the outer surface of the inner shell; The gap cavity between the outer shell and the inner shell and the inner cavity of the second shell form the inlet passage.

6. The flow regulating device according to claim 5, characterized in that: The sealing member comprises an upper seal and a lower seal arranged in sequence along the main flow direction; Two connecting pieces and a sealing piston are provided on the surface of the upper seal along the main flow direction, the two connecting pieces are respectively engaged with the lower seal, the sealing piston passes through the lower seal and is movably connected with the main flow path and seals and cooperates, the control body drives the upper seal to move back and forth along the main flow direction, and drives the sealing piston to block or open the main flow path; The two connecting members are both placed in the gap cavity between the outer shell and the inner shell, one of the two connecting members is provided with an inner hole, the inner hole communicates with the gap cavity and the inner cavity of the upper seal, and the other of the two connecting members has no inner hole.

7. The flow regulating device according to claim 1, characterized in that: The control body includes a solenoid valve assembly and a push rod, wherein the push rod is connected to the sealing member, and the solenoid valve assembly is used to be electrically connected to an external power source to drive the push rod and drive the sealing member to move along the main flow direction.

8. The flow regulating device according to claim 7, characterized in that: The control body further comprises a reset member, which is connected to the push rod and is used to drive the push rod and drive the sealing member to move in the opposite direction of the main flow direction when the solenoid valve assembly is powered off.

9. The flow regulating device according to any one of claims 1 to 8, characterized in that: The flow regulating member is provided with a plurality of through holes.

10. A water heater, characterized in that: The water heater comprises a flow regulating device and a control system as described in any one of claims 1 to 9, the control system is electrically connected to the control body, and the water heater comprises a normal working mode, a boost working mode or a circulation working mode; When the water heater is in a normal working mode, the control system is used to control the control body to be energized, and drive the sealing member to move along the main flow direction to block the main flow passage; When the water heater is in a boost working mode or a circulation working mode, the control system is used to control the control body to be powered off, and drive the sealing element to move in the opposite direction of the main flow direction to connect the main passage with the inlet passage.

Images