One-way valve and water heater comprising same

Abstract

The utility model provides a one-way valve and a water heater comprising the same. The one-way valve is provided with a water inlet and further comprises a valve element assembly, a telescopic piece and a coil, the valve element assembly can move between the opening position enabling the water inlet to be opened and the closing position enabling the water inlet to be closed, and the valve element assembly is subjected to water flow thrust. The water inlet, the valve element assembly and the telescopic piece are sequentially arranged in the flowing direction of water flow, and a magnet is arranged at the movable end of the telescopic piece. When the water heater adopts the pressurizing function, the coil is powered on, magnetic force opposite to the water flow thrust in direction is applied to the magnet, the magnet drives the movable end to move towards the water inlet and abut against the valve element assembly, the movable end applies thrust to the valve element assembly to overcome the water flow thrust, and the valve element assembly is pushed to the closed position; when the water heater adopts a circulation function, the coil is not electrified, and water flow thrust pushes the valve element assembly to move to the opening position. By means of the arrangement, the water heater can be timely and reliably switched between the pressurization function and the circulation function.

Description

TECHNICAL FIELD

[0001] The utility model relates to the valve field especially a kind of one-way valve and water heater comprising it. BACKGROUND

[0002] The existing gas water heater has a one-way valve for circulation, which cannot actively control the opening and closing of the valve core passage, resulting in a conflict between the boost function and the circulation function. Specifically, after the water pump of the water heater starts the boost function, the one-way valve will open, causing the water flow to circulate and return to rotation, and the increased water flow cannot be provided to the shower for user showering.

[0003] The existing technology mainly changes the material of the valve core spring from stainless steel to memory alloy, and adjusts the spring constant by utilizing the temperature difference between the circulating water and the boost flow. This technical solution has hysteresis (memory alloy spring deformation requires time) and unreliability (water temperature is affected by user operation and external environment). UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem of overcoming the hysteresis and unreliability of the existing water heater when switching between the boost function and the circulation function, and provides a one-way valve and a water heater comprising the same.

[0005] The utility model solves the above technical problems by the following technical solutions:

[0006] A one-way valve has a water inlet, and further comprises a valve core assembly, which can move between an open position that opens the water inlet and a closed position that closes the water inlet, and the valve core assembly is subjected to a water flow thrust of water flow entering from the water inlet;

[0007] The one-way valve further comprises a telescopic member and a coil, and the water inlet, the valve core assembly and the telescopic member are arranged in sequence along the flow direction of the water flow, and the movable end of the telescopic member is provided with a magnet;

[0008] When the coil is energized, the coil exerts a magnetic force on the magnet, which is opposite in direction to the water flow thrust, the magnet drives the movable end to move towards the water inlet and abuts against the valve core assembly, and the movable end exerts a thrust on the valve core assembly to overcome the water flow thrust and push the valve core assembly to the closed position;

[0009] When the coil is not energized, the water flow thrust pushes the valve core assembly to move to the open position.

[0010] In the technical solution, the one-way valve is provided, the stroke of the valve core assembly can be adjusted, and the action ability of the valve core assembly can be controlled. When the water heater adopts the pressure boosting function, the coil is powered on, the magnet drives the movable end to push the valve core assembly to the closed position, the water flow cannot pass through the one-way valve to enter the circulation backflow, and the increased water flow can be supplied to the shower head for the user to take a shower. When the water heater adopts the circulation function, the coil is not powered on, the valve core assembly is reset to the open position, and the one-way valve normally flows. The one-way valve enables the water heater to timely and reliably switch between the pressure boosting function and the circulation function, and improves the user experience in the two functions.

[0011] Preferably, the one-way valve further comprises a valve skeleton, the valve skeleton comprises a skeleton shaft and a hollow skeleton main body, and the coil is arranged on the outer circumferential side of the skeleton main body.

[0012] The skeleton shaft is located in the interior of the skeleton main body, and the skeleton shaft has a first cavity in the interior;

[0013] The fixed end of the telescopic piece is fixed to one end of the first cavity away from the valve core assembly, and the movable end of the telescopic piece is arranged close to the valve core assembly.

[0014] In the technical solution, the telescopic piece can be accommodated in the first cavity in the skeleton shaft, the telescopic piece is protected, the telescopic piece is prevented from being stuck or damaged due to foreign matter impact, and the service life of the one-way valve is improved. Meanwhile, the coil is arranged around the telescopic piece in a relatively stable structure, and the movement of the magnet can be better adjusted.

[0015] Preferably, the telescopic piece comprises a fixed rod and a movable rod.

[0016] The fixed rod is fixed in the first cavity, the fixed rod has a hollow structure and is sleeved on the outer side of one end of the movable rod away from the valve core assembly, and the movable rod is provided with a magnet.

[0017] In the technical solution, the telescopic piece can be telescoped in a relatively simple structure.

[0018] Preferably, the telescopic piece further comprises a first elastic piece, one end of the first elastic piece is connected to the fixed rod, the other end of the first elastic piece is connected to the movable rod, and the first elastic piece applies an elastic force to the movable rod in a direction away from the water inlet.

[0019] In the technical solution, the first elastic piece is arranged, the movable rod can be moved in a direction away from the water inlet in time when the coil is not powered on, the valve core assembly can be reset to the open position, and the water heater can be more timely and reliably switched between the pressure boosting function and the circulation function.

[0020] Preferably, the magnet is arranged close to one end of the movable rod close to the valve core assembly, and an end of the first elastic member is connected to the magnet; and / or,

[0021] The first elastic member is a spring, and the first elastic member is arranged around the outer circumferential side of the movable rod.

[0022] In the technical solution, the magnet is arranged close to one end of the movable rod close to the valve core assembly, and an end of the first elastic member is connected to the magnet, so that the force received by the telescopic member is concentrated on one end of the movable rod close to the valve core assembly, improving the stability of the movable rod during movement. The first elastic member is a spring, and the first elastic member is arranged around the outer circumferential side of the movable rod, so that the elastic force received by the movable rod is more uniform in the circumferential direction and is applied in the axial direction, further improving the stability of the movable rod during movement.

[0023] Preferably, the one-way valve further comprises a hollow valve body, and the valve body is arranged around the outer circumferential side of the valve framework.

[0024] The valve framework further comprises an inlet limiting portion and an outlet limiting portion, the water inlet is arranged on the inlet limiting portion, the water outlet of the one-way valve is arranged on the outlet limiting portion, and the coil is jointly limited by the inlet limiting portion, the outlet limiting portion and the valve body.

[0025] In the technical solution, the coil is jointly limited by the inlet limiting portion, the outlet limiting portion and the valve body, so that the coil is stable, the possibility of falling off due to the interaction force with the magnet is reduced, and the service life of the one-way valve is further improved.

[0026] Preferably, the inner wall of the inlet limiting portion, the inner wall of the valve framework and the end of the framework shaft jointly form a second cavity.

[0027] The valve core assembly comprises a valve core, a valve rod and a second elastic member, the valve core is connected to the valve rod, the valve core is movably arranged in the second cavity, and one end of the valve rod away from the valve core is movably arranged in the first cavity.

[0028] One end of the second elastic member is connected to the framework shaft, the other end of the second elastic member is connected to the valve core, and the second elastic member applies an elastic force away from the water inlet to the valve core.

[0029] In the technical solution, the above arrangement can make the valve core limited by the valve rod, stably reciprocate in the second cavity, and timely leave the water inlet when the coil is not powered on, so that the water heater can more timely and reliably switch between the pressure boosting function and the circulation function.

[0030] Preferably, the second elastic member is a spring, and the second elastic member is arranged around the outer periphery of the valve rod.

[0031] In the technical solution, the elastic force applied to the valve core is relatively uniform in the circumferential direction and is applied in the axial direction, thereby further improving the stability of the valve core during movement.

[0032] Preferably, the valve framework further comprises a support, one end of the support is connected to the outer wall of the framework shaft, and the other end of the support is connected to the inner wall of the framework body.

[0033] The framework shaft, the framework body and the support jointly enclose a fluid channel, the water inlet, the fluid channel and the water outlet of the one-way valve are sequentially communicated.

[0034] In the technical solution, the fluid channel through which water flows is located between the framework shaft and the framework body, and plays a good guiding role between the water inlet and the water outlet, thereby reducing the occurrence of turbulence and reducing the possibility of water flow damaging other non-waterproof structures.

[0035] A water heater has a booster circuit and a circulation circuit; the water heater comprises the one-way valve according to any one of the preceding technical solutions, and the one-way valve is located at the connection between the booster circuit and the circulation circuit.

[0036] When the valve core assembly is located at the open position, the booster circuit and the circulation circuit are communicated.

[0037] When the valve core assembly is located at the closed position, the booster circuit and the circulation circuit are not communicated.

[0038] In the technical solution, when the booster function is used, the coil is powered on, the movable end driven by the magnet pushes the valve core assembly to the closed position, water flow cannot pass through the one-way valve to enter the circulation return, and the increased water flow can be supplied to the shower head for user showering. When the water heater uses the circulation function, the coil is not powered on, the valve core assembly is reset to the open position, and the one-way valve normally flows. The one-way valve enables the water heater to timely and reliably switch between the booster function and the circulation function, thereby improving the user experience in the two functions.

[0039] The positive progress effect of the utility model lies in:

[0040] By providing the one-way valve and the water heater comprising the same, the stroke of the valve core assembly can be adjusted to control the action ability of the valve core assembly. When the water heater adopts the pressure boosting function, the coil is powered on, the magnet drives the movable end to push the valve core assembly to the closed position, the water flow cannot pass through the one-way valve to enter the circulation backflow, and the increased water flow can be given to the shower head for the user to shower. When the water heater adopts the circulation function, the coil is not powered on, the valve core assembly is reset to the open position, and the one-way valve normally flows. The one-way valve enables the water heater to timely and reliably switch between the pressure boosting function and the circulation function, and improves the user experience under the two functions. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is a schematic diagram of the three-dimensional structure of the one-way valve of an embodiment of the utility model.

[0042] Figure 2 It is a schematic diagram of the three-dimensional structure of the one-way valve of an embodiment of the utility model.

[0043] Figure 3 It is a schematic diagram of the cross-sectional structure of the valve core assembly of the one-way valve of an embodiment of the utility model in the open position.

[0044] Figure 4 It is a schematic diagram of the cross-sectional structure of the valve core assembly of the one-way valve of an embodiment of the utility model in the closed position.

[0045] BRIEF DESCRIPTION OF DRAWINGS

[0046] One-way valve 1

[0047] Water inlet 11

[0048] Water outlet 12

[0049] Valve core assembly 13

[0050] Valve core 131

[0051] Valve rod 132

[0052] Second elastic member 133

[0053] Telescopic member 14

[0054] Magnet 141

[0055] Fixed rod 142

[0056] Movable rod 143

[0057] First elastic member 144

[0058] Coil 15

[0059] Valve skeleton 16

[0060] Skeleton shaft 161

[0061] skeleton body 162

[0062] first cavity 163

[0063] second cavity 164

[0064] inlet limiting part 165

[0065] outlet limiting part 166

[0066] support 167

[0067] fluid channel 168

[0068] valve body 17

[0069] flow direction A of water flow DETAILED DESCRIPTION

[0070] The utility model will be described in detail below with reference to the preferred embodiments and drawings.

[0071] As Figures 1-3 shown, the embodiment provides a one-way valve 1 with a water inlet 11, further comprising a valve core 131 assembly 13, the valve core 131 assembly 13 can be moved between an opening position (refer to Figure 3 ) enabling the water inlet 11 to open and a closing position (refer to Figure 4 ) enabling the water inlet 11 to close, the valve core 131 assembly 13 is subjected to water flow thrust (direction same as the flow direction A of water flow) of water flow entering from the water inlet 11.

[0072] The one-way valve 1 further comprises a telescopic piece 14 and a coil 15, the water inlet 11, the valve core 131 assembly 13 and the telescopic piece 14 are arranged in sequence along the flow direction A of water flow, and the movable end of the telescopic piece 14 is provided with a magnet 141.

[0073] When the coil 15 is powered, the coil 15 exerts a magnetic force on the magnet 141 in the opposite direction of the water flow thrust, the magnet 141 drives the movable end to move in the direction of the water inlet 11 and abuts against the valve core 131 assembly 13, the movable end exerts a thrust on the valve core 131 assembly 13 to overcome the water flow thrust and drives the valve core 131 assembly 13 to the closing position. In this way, when the water heater adopts the pressure boosting function, the coil 15 is powered, the magnet 141 drives the movable end to push the valve core 131 assembly 13 to the closing position, and the water flow cannot enter the circulation reflux through the one-way valve 1, and the increased water flow can be supplied to the shower for the user to take a shower.

[0074] When the coil 15 is not powered, the water flow thrust drives the valve core 131 assembly 13 to move to the opening position. In this way, when the water heater adopts the circulation function, the coil 15 is not powered, the valve core 131 assembly 13 is reset to the opening position, and the one-way valve 1 normally flows.

[0075] The above setting can adjust the stroke of the valve core 131 assembly 13, control the action ability of the valve core 131 assembly 13. The one-way valve 1 enables the water heater to switch between the pressurization function and the circulation function in time and reliably, and improves the user experience under the two functions.

[0076] In the embodiment, the one-way valve 1 further comprises a valve skeleton 16, the valve skeleton 16 comprises a skeleton shaft 161 and a hollow skeleton main body 162, and the coil 15 is arranged on the outer circumferential side of the skeleton main body 162. The skeleton shaft 161 is located inside the skeleton main body 162, and the skeleton shaft 161 has a first cavity 163 therein. The fixed end of the telescopic piece 14 is fixed to one end of the first cavity 163 away from the valve core 131 assembly 13, and the movable end of the telescopic piece 14 is arranged close to the valve core 131 assembly 13. In this way, the telescopic piece 14 can be accommodated in the first cavity 163 in the skeleton shaft 161, thereby protecting the telescopic piece 14 from being impacted by foreign matters and causing the telescopic piece 14 to be stuck or damaged, and improving the service life of the one-way valve 1. At the same time, the coil 15 is arranged around the telescopic piece 14 in a relatively stable structure, which facilitates better adjustment of the movement of the magnet 141.

[0077] In the embodiment, the telescopic piece 14 comprises a fixed rod 142 and a movable rod 143. The fixed rod 142 is fixed in the first cavity 163, the fixed rod 142 is a hollow structure and is sleeved outside one end of the movable rod 143 away from the valve core 131 assembly 13, and the magnet 141 is arranged on the movable rod 143. In this way, the telescopic piece 14 can be telescoped in a relatively simple structure.

[0078] In the embodiment, the telescopic piece 14 further comprises a first elastic piece 144, one end of the first elastic piece 144 is connected to the fixed rod 142, the other end of the first elastic piece 144 is connected to the movable rod 143, and the first elastic piece 144 applies an elastic force to the movable rod 143 in a direction away from the water inlet 11. In this way, when the coil 15 is not powered, the movable rod 143 can be moved in a direction away from the water inlet 11 in time, which facilitates the valve core 131 assembly 13 to return to the open position, and enables the water heater to switch between the pressurization function and the circulation function in time and reliably.

[0079] In the embodiment, the magnet 141 is arranged close to one end of the movable rod 143 close to the valve core 131 assembly 13, and the end of the first elastic piece 144 is connected to the magnet 141, so that the force received by the telescopic piece 14 is concentrated on one end of the movable rod 143 close to the valve core 131 assembly 13, thereby improving the stability of the movable rod 143 when it moves.

[0080] In the embodiment, the first elastic member 144 is a spring, and the first elastic member 144 is arranged around the outer circumferential side of the movable rod 143. In this way, the elastic force acting on the movable rod 143 is more uniform in the circumferential direction and is applied in the axial direction, further improving the stability of the movable rod 143 when moving.

[0081] In the embodiment, the one-way valve 1 further comprises a hollow valve body 17, and the valve body 17 is sleeved on the outer circumferential side of the valve framework 16. The valve framework 16 further comprises an inlet limiting portion 165 and an outlet limiting portion 166, the water inlet 11 is arranged on the inlet limiting portion 165, the water outlet 12 of the one-way valve 1 is arranged on the outlet limiting portion 166, and the coil 15 is limited by the inlet limiting portion 165, the outlet limiting portion 166 and the valve body 17. In this way, the coil 15 can be stabilized, the possibility of falling off due to the interaction force with the magnet 141 is reduced, and the service life of the one-way valve 1 is further improved.

[0082] In the embodiment, the inner wall of the inlet limiting portion 165, the inner wall of the valve framework 16 and the end of the framework shaft 161 jointly form a second cavity 164. The valve core 131 assembly 13 comprises a valve core 131, a valve rod 132 and a second elastic member 133, the valve core 131 is connected to the valve rod 132, the valve core 131 is movably arranged in the second cavity 164, and the end of the valve rod 132 away from the valve core 131 is movably arranged in the first cavity 163. One end of the second elastic member 133 is connected to the framework shaft 161, the other end of the second elastic member 133 is connected to the valve core 131, and the second elastic member 133 applies an elastic force away from the water inlet 11 to the valve core 131. In this way, the valve core 131 is limited by the valve rod 132, and reciprocates stably in the second cavity 164, and timely leaves the water inlet 11 when the coil 15 is not energized, so that the water heater can be more timely and reliably switched between the pressure boosting function and the circulation function.

[0083] In the embodiment, the second elastic member 133 is a spring, and the second elastic member 133 is arranged around the outer circumferential side of the valve rod 132. In this way, the elastic force acting on the valve core 131 is more uniform in the circumferential direction and is applied in the axial direction, further improving the stability of the valve core 131 when moving.

[0084] In the embodiment, the valve skeleton 16 further comprises a support 167, one end of the support 167 is connected to the outer wall of the skeleton shaft 161, and the other end of the support 167 is connected to the inner wall of the skeleton main body 162. The skeleton shaft 161, the skeleton main body 162 and the support 167 jointly enclose a fluid passage 168, the water inlet 11, the fluid passage 168 and the water outlet 12 of the one-way valve 1 are sequentially communicated. In this way, the fluid passage 168 through which the water flows is located between the skeleton shaft 161 and the skeleton main body 162, and plays a good guiding role between the water inlet 11 and the water outlet 12, reduces the occurrence of turbulence, and reduces the possibility of water flow damaging other non-waterproof structures.

[0085] In the embodiment, the plurality of supports 167 are uniformly distributed along the inner circumferential side of the skeleton main body 162, which can make the water flow uniform, reduce the occurrence of local turbulence, and avoid damage to the structure in the one-way valve caused by excessive impact force of local water flow.

[0086] The embodiment also provides a water heater having a pressurization circuit and a circulation circuit; the water heater comprises the one-way valve 1 of any one of the above, and the one-way valve 1 is located at the connection between the pressurization circuit and the circulation circuit.

[0087] When the valve core 131 assembly 13 is located at the open position, the pressurization circuit and the circulation circuit are communicated.

[0088] When the valve core 131 assembly 13 is located at the closed position, the pressurization circuit and the circulation circuit are not communicated.

[0089] The one-way valve 1 enables the water heater to timely and reliably switch between the pressurization function and the circulation function, and improves the user experience under the two functions.

[0090] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and these changes and modifications all fall within the protection scope of the present application.

Claims

1. A one-way valve having a water inlet, the one-way valve further comprising a valve core assembly movable between an open position to open the water inlet and a closed position to close the water inlet, the valve core assembly subjected to a water flow thrust from a water flow entering the water inlet; characterized in that: the one-way valve further comprising a telescopic member and a coil, the water inlet, the valve core assembly and the telescopic member arranged in sequence along a flow direction of the water flow, a movable end of the telescopic member provided with a magnet; when the coil is energized, the coil applies a magnetic force to the magnet, the magnetic force being opposite to the water flow thrust, the magnet driving the movable end to move towards the water inlet and abutting against the valve core assembly, the movable end applying a thrust to the valve core assembly to overcome the water flow thrust and drive the valve core assembly to the closed position; when the coil is not energized, the water flow thrust drives the valve core assembly to move to the open position; the one-way valve further comprising a valve skeleton, the valve skeleton comprising a skeleton shaft and a hollow skeleton main body, the coil being arranged around an outer periphery of the skeleton main body; the skeleton shaft being located inside the skeleton main body, the skeleton shaft having a first cavity therein; a fixed end of the telescopic member being fixed to an end of the first cavity away from the valve core assembly, a movable end of the telescopic member being arranged close to the valve core assembly; the telescopic member comprising a fixed rod and a movable rod; the fixed rod being fixed in the first cavity, the fixed rod being hollow and sleeved outside an end of the movable rod away from the valve core assembly, the movable rod being provided with the magnet; the telescopic member further comprising a first elastic member, one end of the first elastic member being connected to the fixed rod, the other end of the first elastic member being connected to the movable rod, the first elastic member applying an elastic force to the movable rod towards an end away from the water inlet; the magnet being arranged close to an end of the movable rod close to the valve core assembly, the end of the first elastic member being connected to the magnet; and / or, the first elastic member being a spring, the first elastic member being arranged around an outer periphery of the movable rod; the one-way valve further comprising a hollow valve body, the valve body being sleeved outside an outer periphery of the valve skeleton; the valve skeleton further comprising an inlet limiting portion and an outlet limiting portion, the water inlet being formed on the inlet limiting portion, a water outlet of the one-way valve being formed on the outlet limiting portion, the coil being limited by the inlet limiting portion, the outlet limiting portion and the valve body; an inner wall of the inlet limiting portion, an inner wall of the valve skeleton and an end of the skeleton shaft collectively forming a second cavity; the valve core assembly comprising a valve core, a valve rod and a second elastic member, the valve core being connected to the valve rod, the valve core being movably arranged in the second cavity, an end of the valve rod away from the valve core being movably arranged in the first cavity; one end of the second elastic member being connected to the skeleton shaft, the other end of the second elastic member being connected to the valve core, the second elastic member applying an elastic force to the valve core away from the water inlet. ​ ​ ​ 2. The one-way valve of claim 1, wherein ​ ​ ​ 3. The one-way valve of claim 2, wherein, ​ ​ 4. The one-way valve of claim 3, wherein ​ 5. The one-way valve of claim 4, wherein, ​ ​ 6. The one-way valve of claim 2, wherein ​ ​ 7. The one-way valve of claim 6, wherein ​ ​ ​ 8. The one-way valve of claim 7, wherein, The second elastic member is a spring, and is arranged around the outer periphery of the valve rod.

9. The one-way valve of claim 2, wherein The valve skeleton further comprises a support, one end of the support is connected to the outer wall of the skeleton shaft, and the other end of the support is connected to the inner wall of the skeleton main body. The skeleton shaft, the skeleton main body and the support jointly enclose a fluid channel, the water inlet, the fluid channel and the water outlet of the one-way valve are sequentially communicated.

10. A water heater having a booster circuit and a circulation circuit; characterised in that, The water heater comprises the one-way valve according to any one of claims 1-9, and the one-way valve is located at the connection between the pressure boosting circuit and the circulation circuit. When the valve core assembly is located at the opening position, the pressure boosting circuit and the circulation circuit are communicated. When the valve core assembly is located at the closing position, the pressure boosting circuit and the circulation circuit are not communicated.

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