By-pass valve and water heater comprising same

Abstract

The application discloses a bypass valve and a water heater comprising the same, and belongs to the technical field of water heaters. The bypass valve comprises a valve body, a water inlet channel, a water outlet channel and a bypass channel are arranged in the valve body; further comprising a fixed support, a rotating disc and a sliding block, the fixed support comprises a water passing hole and a sliding groove arranged on the radial outer side of the water passing hole, one end of the sliding groove extends to the water passing hole, the rotating disc is rotationally connected with the fixed support, the rotating disc is arranged to be capable of rotating towards a first direction and a second direction along the circumferential direction of the bypass channel, the sliding block is embedded in the sliding groove, the sliding block is capable of sliding along the extension direction of the sliding groove, the sliding block is movably connected with the rotating disc, when the rotating disc rotates towards the first direction, the sliding block moves along the extension direction of the sliding groove towards the water passing hole to reduce the opening degree of the water passing hole; when the rotating disc rotates towards the second direction, the sliding block moves along the extension direction of the sliding groove away from the water passing hole to increase the opening degree of the water passing hole. The bypass flow is adjusted by changing the opening degree of the water passing hole.

Description

Technical Field

[0001] This invention relates to the field of water heater technology, and particularly to a bypass valve and a water heater containing the same. Background Technology

[0002] A water heater is a common appliance used to heat water. Cold water flows into the heat exchanger of the water heater from the inlet pipe. After the water exchanges heat with the heat exchanger and its temperature rises, it flows out through the outlet pipe for the user's use.

[0003] When a user closes the valve to stop using hot water, the water in the heat exchanger stops flowing. Because the heat exchanger has thermal inertia, the heat stored in the heat exchanger continues to be conducted to the water inside after the water is turned off, causing this portion of the water to become too hot, resulting in a temperature rise during the water outage. When the user reopens the valve, they may experience a period of hot water, causing discomfort.

[0004] To address the issue of temperature rise during water outages, current technical solutions involve connecting a bypass pipe between the inlet and outlet pipes inside the water heater. This allows some cold water to bypass the heat exchanger and flow directly through the bypass pipe to the water heater's outlet pipe, neutralizing the temperature rise caused by the outage. However, conventional bypass pipes are fixed flow channels with no adjustable flow rate. If the channel is too narrow, the flow rate is too low to effectively reduce the temperature rise during outages; if the channel is too wide, the flow rate is too high, potentially causing excessive cooling of the hot water. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defect that the bypass flow of water heaters in the prior art cannot be adjusted, and to provide a bypass valve and a water heater containing the same.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] A bypass valve includes a valve body, the valve body having an inlet channel, an outlet channel and a bypass channel, the bypass channel being connected to the inlet channel and the outlet channel;

[0008] The bypass valve also includes a fixed support, a rotary table, and a slider;

[0009] The fixed support is disposed in the bypass channel and fixed on the valve body. The fixed support includes a water passage hole that extends through both ends of the bypass channel in the axial direction and a sliding groove disposed on the radially outer side of the water passage hole. One end of the sliding groove extends to the water passage hole.

[0010] The turntable is disposed on one side of the fixed support along the axial direction of the bypass channel. The turntable is rotatably connected to the fixed support. The turntable is configured to rotate in a first direction and a second direction along the circumferential direction of the bypass channel, wherein the first direction and the second direction are two opposite directions.

[0011] The slider is located at the end of the fixed support away from the turntable. The slider is embedded in the groove and can slide along the extension direction of the groove. The slider and the turntable are movably connected. When the turntable rotates in the first direction, the slider moves towards the water passage hole along the extension direction of the groove to reduce the opening of the water passage hole. When the turntable rotates in the second direction, the slider moves away from the water passage hole along the extension direction of the groove to increase the opening of the water passage hole.

[0012] In this design, the slider and the turntable are movably connected. The rotation of the turntable causes the slider to move in the groove. Simultaneously, since one end of the slider embedded in the groove extends to the water passage hole, when the turntable rotates in the first direction, the slider moves towards the water passage hole in the groove and enters the water passage hole. Due to the blocking effect of the slider, the opening of the water passage hole is reduced, and the total bypass flow of the bypass valve is reduced, preventing too much cold water from flowing out directly without heating and affecting the outlet water temperature. When the turntable rotates in the second direction, the slider moves away from the water passage hole in the groove and moves out of the water passage hole, thereby increasing the opening of the water passage hole. The total bypass flow of the bypass valve is large, which helps to reduce the temperature rise during water outage as quickly as possible.

[0013] Preferably, the turntable has a spiral guide groove extending circumferentially along the bypass channel on the side facing the fixed support, and the slider has a connecting part on the side facing the turntable. The connecting part is accommodated in the guide groove and abuts against the two side walls of the guide groove. The connecting part is movably accommodated in the guide groove to convert the rotational motion of the turntable into the linear motion of the slider.

[0014] In this design, the turntable is equipped with a spiral guide groove. When the turntable rotates, the guide groove rotates circumferentially along the bypass channel. The connecting part of the slider abuts against the guide groove. When the spiral guide groove rotates, the slider will have a spiral tendency to move towards the center of the guide groove (or a movement tendency in the opposite direction). Since the slider is confined in the slide groove, this movement tendency of the slider is restricted to a straight line movement along the slide groove. When the turntable rotates one revolution, the slider moves to the guide groove of the adjacent revolution, thereby moving in the slide groove.

[0015] Preferably, the connecting part is serrated and includes a plurality of protruding teeth. The plurality of protruding teeth are spaced apart along the extension direction of the slide groove, and each of the protruding teeth abuts against the two side walls of the guide groove.

[0016] In this design, the serrated connecting part has protruding teeth spaced apart in the guide groove, which makes the contact between the connecting part and the guide groove more complete and the connection more stable. This allows more turns of the guide groove to drive the connecting part to move. At the same time, the multiple protruding teeth also extend the length of the connecting part (or slider), increasing the slider's range of motion. This allows the turntable to effectively drive the slider to reduce or increase the opening of the water passage without rotating the turntable too many times.

[0017] Preferably, along the circumferential direction of the bypass channel, one of the slider and the groove has a protrusion on its peripheral sidewall and the other has a groove on its peripheral sidewall, and the protrusion is movably accommodated in the groove.

[0018] In this design, the slider and the groove are connected by a protrusion and a groove, which on the one hand realizes the connection between the slider and the groove, and on the other hand allows the slider to slide in the groove.

[0019] Preferably, the end of the chute away from the water passage abuts against the inner peripheral wall of the bypass channel.

[0020] In this solution, with the above-mentioned structure, when the slider moves away from the water passage, the slider will be limited to the inner wall of the bypass channel because one end of the slide groove abuts against the inner wall of the bypass channel, thus restricting further movement of the slider and preventing it from detaching from the turntable.

[0021] Preferably, there are multiple and equal numbers of both the slider and the groove, and one slider is embedded in any one of the grooves;

[0022] The extension directions of the plurality of grooves converge at the radial center of the water passage hole.

[0023] In this design, since the extension directions of multiple slides converge at the radial center of the water passage, when multiple slides move towards the water passage, they eventually converge and abut against the center of the water passage, thus reducing the opening. When multiple slides move away from the water passage, they disperse from the center of the water passage, thus increasing the opening. Compared to using a single slide (and slide groove), adjusting the opening of the water passage by the convergence and dispersion of multiple slides shortens the movement path of each slide, making the bypass valve structure more compact. Furthermore, if one slide fails, the others can continue to operate, preventing the bypass valve from becoming completely unusable.

[0024] Preferably, the length of the slider is greater than the radius of the water passage hole.

[0025] In this design, when there are multiple sliders, the length of the slider is greater than the radius of the water passage hole. This ensures that the sliders can abut together and prevents the sliders from detaching from the turntable due to being too short.

[0026] Preferably, the bypass valve further includes a drive assembly and a connecting rod, the drive assembly being connected to the turntable via the connecting rod, and the drive assembly being used to drive the turntable to rotate in the first direction and the second direction.

[0027] In this design, the drive assembly is the power source for the rotation of the turntable. Through the connection of the connecting rod, it drives the turntable to rotate, thereby causing the slider to move.

[0028] Preferably, the drive assembly includes a turbine rotor, the axis of which is parallel to the axis of the bypass channel, and the turbine rotor can rotate in the first direction along the circumference of the bypass channel under the action of water flow, so as to drive the turntable to rotate in the first direction.

[0029] The drive assembly further includes a reset member connected to the turbine rotor, the reset member being used to apply a rotational force toward the turbine rotor in the second direction.

[0030] In this scheme, since the turbine rotor can rotate under the action of water flow, when water flows through the bypass valve, the turbine rotor can rotate to drive the turntable to rotate in the first direction; in addition, the reset member is connected to the turbine rotor to drive the turbine rotor to rotate in the opposite direction to drive the turntable to rotate in the second direction.

[0031] Preferably, the reset element includes a coil spring connected to the end of the turbine rotor away from the turntable.

[0032] In this design, the coil spring is connected to the turbine rotor. When the turbine rotor rotates under the action of water flow, the coil spring is compressed. When the water flow stops, the coil spring releases its elastic force, driving the turbine rotor to rotate in the opposite direction.

[0033] A water heater comprising a bypass valve as described above.

[0034] The positive and progressive effects of this invention are as follows:

[0035] In this invention, the slider and the turntable are movably connected. Since one end of the slider is embedded in the groove extends to the water passage hole, when the turntable rotates in the first direction, the slider moves towards the water passage hole in the groove and enters the water passage hole to reduce the opening of the water passage hole, thereby reducing the total bypass flow of the bypass valve and preventing too much cold water from flowing out directly without heating, which would affect the outlet water temperature. When the turntable rotates in the second direction, the slider moves away from the water passage hole in the groove and moves out of the water passage hole to increase the opening of the water passage hole. The total bypass flow of the bypass valve is large, which helps to reduce the temperature rise during water outage as quickly as possible. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of a water heater according to a preferred embodiment of the present invention.

[0037] Figure 2 This is a three-dimensional structural diagram of the bypass valve according to a preferred embodiment of the present invention.

[0038] Figure 3 This is a cross-sectional structural diagram of a bypass valve according to a preferred embodiment of the present invention, wherein the opening of the water passage hole is relatively large.

[0039] Figure 4 This is a cross-sectional structural diagram of a bypass valve according to a preferred embodiment of the present invention, wherein the opening of the water passage hole is relatively small.

[0040] Figure 5 This is a three-dimensional structural diagram of the fixed support, slider, and turbine rotor of the bypass valve according to a preferred embodiment of the present invention, wherein the opening of the water passage hole is relatively large.

[0041] Figure 6 This is a three-dimensional structural diagram of the fixed support, slider, and turbine rotor of the bypass valve according to a preferred embodiment of the present invention, wherein the opening of the water passage is small and the bracket is not shown.

[0042] Figure 7 This is a three-dimensional structural diagram of the fixed support, turntable, and slider of the bypass valve according to a preferred embodiment of the present invention.

[0043] Figure 8 This is a three-dimensional structural diagram of the rotary table and slider of the bypass valve according to a preferred embodiment of the present invention.

[0044] Figure 9 This is a three-dimensional structural diagram of the slider of the bypass valve according to a preferred embodiment of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] Water heater 100

[0047] Water inlet pipe 110

[0048] Water outlet pipe 120

[0049] Heat exchanger 130

[0050] Bypass valve 200

[0051] Valve body 210

[0052] Water inlet channel 220

[0053] Water outlet channel 230

[0054] Bypass channel 240

[0055] Mounting slot 250

[0056] Fixed support 300

[0057] Water passage 310

[0058] 320 Slide

[0059] Groove 321

[0060] Turntable 400

[0061] Guide groove 410

[0062] Slider 500

[0063] Connecting part 510

[0064] Convex tooth 511

[0065] Protrusion 520

[0066] Contact part 530

[0067] Oblique side 531

[0068] Flat top surface 532

[0069] Turbine Rotor 600

[0070] Connecting rod 700

[0071] 800 coil spring

[0072] 901 bracket

[0073] Head 902 Detailed Implementation

[0074] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0075] like Figure 1As shown, this embodiment discloses a water heater 100, which includes an inlet pipe 110, an outlet pipe 120, a heat exchanger 130, and a bypass valve 200. Both the inlet pipe 110 and the outlet pipe 120 are connected to the heat exchanger 130. Cold water enters the heat exchanger 130 from the inlet pipe 110, is heated, and then flows out from the outlet pipe 120 for user use. The bypass valve 200 is connected between the inlet pipe 110, the outlet pipe 120, and the heat exchanger 130. It is used to allow a portion of the cold water in the inlet pipe 110 to bypass the heat exchanger 130 and flow directly through the bypass valve 200 to the outlet pipe 120, using this portion of cold water to neutralize the hot water section in the outlet pipe 120 caused by a water outage.

[0076] like Figures 2-9 As shown, the bypass valve 200 includes a valve body 210, which contains an inlet channel 220, an outlet channel 230, and a bypass channel 240. The inlet channel 220 is connected to the inlet pipe 110 and the inlet end of the heat exchanger 130, respectively. The outlet channel 230 is connected to the outlet pipe 120 and the outlet end of the heat exchanger 130, respectively. The bypass channel 240 connects the inlet channel 220 and the outlet channel 230.

[0077] The bypass valve 200 also includes a fixed support 300, a rotary table 400, and a slider 500.

[0078] The fixed support 300 is disposed in the bypass channel 240 and fixed on the valve body 210. The fixed support 300 includes a water passage 310 that passes through both ends of the bypass channel 240 in the axial direction and a sliding groove 320 disposed on the radially outer side of the water passage 310. One end of the sliding groove 320 extends to the water passage 310.

[0079] The turntable 400 is disposed on one side of the fixed support 300 in the axial direction of the bypass channel 240. The turntable 400 is rotatably connected to the fixed support 300. The turntable 400 is configured to be able to rotate in the circumferential direction of the bypass channel 240 toward a first direction and a second direction, wherein the first direction and the second direction are two opposite directions.

[0080] The slider 500 is located at the end of the fixed support 300 away from the turntable 400. The slider 500 is embedded in the slide groove 320 and can slide along the extension direction of the slide groove 320. The slider 500 and the turntable 400 are movably connected. When the turntable 400 rotates in the first direction, the slider 500 moves along the extension direction of the slide groove 320 toward the water passage hole 310 to reduce the opening of the water passage hole 310. When the turntable 400 rotates in the second direction, the slider 500 moves along the extension direction of the slide groove 320 away from the water passage hole 310 to increase the opening of the water passage hole 310.

[0081] Thus, the slider 500 and the turntable 400 are movably connected. The rotation of the turntable 400 drives the slider 500 to move in the groove 320. At the same time, since one end of the groove 320 into which the slider 500 is embedded extends to the water passage hole 310, when the turntable 400 rotates in the first direction, the slider 500 moves towards the water passage hole 310 in the groove 320 and enters the water passage hole 310. Due to the blocking effect of the slider 500, the opening of the water passage hole 310 is reduced, and the total bypass flow of the bypass valve 200 is reduced, thus preventing too much cold water from flowing out directly without heating and affecting the outlet water temperature. When the turntable 400 rotates in the second direction, the slider 500 moves away from the water passage hole 310 in the groove 320 and moves out of the water passage hole 310, thereby increasing the opening of the water passage hole 310. The total bypass flow of the bypass valve 200 is large, which helps to reduce the temperature rise during water outage as quickly as possible.

[0082] The first and second directions do not refer to any specific fixed direction, but are only related to the movement state of the slider 500: when the turntable 400 rotates, causing the slider 500 to move toward the water passage 310, the turntable 400 rotates toward the first direction; when the turntable 400 rotates, causing the slider 500 to move away from the water passage 310, the turntable 400 rotates toward the second direction.

[0083] In this embodiment, the turntable 400 is disposed on the side of the fixed support 300 near the outlet channel 230 along the axial direction of the bypass channel 240. In other alternative embodiments, the turntable 400 may also be disposed on the side of the fixed support 300 near the inlet channel 220, and the rotation direction of the turntable 400 can be adjusted.

[0084] Furthermore, the turntable 400 has a spiral guide groove 410 extending circumferentially along the bypass channel 240 on the side facing the fixed support 300, and the slider 500 has a connecting part 510 on the side facing the turntable 400. The connecting part 510 is accommodated in the guide groove 410 and abuts against the two side walls of the guide groove 410. The connecting part 510 is movably accommodated in the guide groove 410 so as to convert the rotational motion of the turntable 400 into the linear motion of the slider 500.

[0085] Since the turntable 400 is provided with a spiral guide groove 410, when the turntable 400 rotates, the guide groove 410 will rotate circumferentially along the bypass channel 240 along with the rotation of the turntable 400. The connecting part 510 of the slider 500 abuts against the guide groove 410. When the spiral guide groove 410 rotates, the slider 500 will have a spiral tendency to move towards the center of the guide groove 410 (or a movement tendency in the opposite direction). Since the slider 500 is confined in the slide groove 320, this movement tendency of the slider 500 is restricted to a straight line movement along the slide groove 320. When the turntable 400 rotates one revolution, the slider 500 moves into the guide groove 410 of the adjacent revolution, thereby moving in the slide groove 320.

[0086] Specifically, the connecting part 510 is serrated in shape and includes a plurality of protruding teeth 511. The plurality of protruding teeth 511 are spaced apart along the extension direction of the slide groove 320, and each protruding tooth 511 abuts against the two side walls of the guide groove 410.

[0087] The serrated connecting portion 510 has protruding teeth 511 spaced apart in the guide groove 410, which makes the contact between the connecting portion 510 and the guide groove 410 more complete and the connection more stable. This allows more turns of the guide groove 410 to drive the connecting portion 510 to move. At the same time, the multiple protruding teeth 511 also extend the length of the connecting portion 510 (or slider 500), increasing the range of motion of the slider 500. This allows the turntable 400 to effectively drive the slider 500 to reduce or increase the opening of the water passage hole 310 without rotating too many times.

[0088] In this embodiment, the guide groove 410 surrounds the radial periphery of the water passage hole 310 and extends spirally from the radial periphery of the water passage hole 310 to the outer edge of the turntable 400, thereby increasing the range of motion of the connecting part 510.

[0089] The guide groove 410 can be manufactured separately and then connected to the turntable 400, or it can be etched onto the turntable 400. In this embodiment, a planar thread is etched onto the turntable 400 to form the guide groove 410. Thus, for every revolution of the turntable 400, the slider 500 moves by one thread pitch. Furthermore, by controlling the number of turns of the planar thread and the pitch, the moving speed of the slider 500 can be controlled: the more turns of the planar thread and the smaller the pitch, the slower the slider 500 moves; the fewer turns of the planar thread and the larger the pitch, the faster the slider 500 moves. Therefore, the time it takes for the water passage 310 to shrink from fully open to its limit state can be controlled. By setting an appropriate number of turns and pitch of the planar thread, a suitable time is required for the water passage 310 to shrink to its limit state. During this time, since the opening of the water passage 310 is in the process of shrinking, the bypass flow is still relatively large, which can quickly improve the water outage temperature rise. When the opening of the water passage 310 shrinks to its limit state, a smaller bypass flow is restored to avoid other problems caused by excessive bypass flow, such as cold water flowing out directly without heating, or water boiling due to a small flow through the heat exchanger 130.

[0090] Furthermore, along the circumferential direction of the bypass channel 240, one of the slider 500 and the slide groove 320 has a protrusion 520 on its circumferential sidewall, and the other has a groove 321 on its circumferential sidewall, with the protrusion 520 being movably accommodated in the groove 321.

[0091] Thus, the slider 500 and the groove 320 are connected by the protrusion 520 and the groove 321, and the slider 500 can slide in the groove 320.

[0092] In this embodiment, the protrusion 520 is disposed on the peripheral sidewall of the slider 500, and the groove 321 is disposed on the peripheral side of the groove 320. In other alternative embodiments, the opposite arrangement can be made.

[0093] Furthermore, the end of the chute 320 away from the water passage 310 abuts against the inner peripheral wall of the bypass channel 240.

[0094] With the above structure, when the slider 500 moves away from the water passage 310, since one end of the slide groove 320 abuts against the inner peripheral wall of the bypass channel 240, the slider 500 will also be limited to the inner peripheral wall of the bypass channel 240, restricting the further movement of the slider 500 and preventing it from detaching from the turntable 400.

[0095] Specifically, in this embodiment, the groove 321 extends from the peripheral wall of the water passage 310 to the peripheral wall of the fixed support 300, and the peripheral wall of the fixed support 300 abuts against the inner peripheral wall of the bypass channel 240, so that the end of the chute 320 away from the water passage 310 abuts against the inner peripheral wall of the bypass channel 240.

[0096] Furthermore, the number of sliders 500 and grooves 320 can be set to one or more.

[0097] When there is only one slide groove 320, only one slider 500 is needed. In order to ensure the effect of reducing the opening of the water passage hole 310, the width of the slider 500 needs to be close to the diameter of the water passage hole 310. A limiting structure (such as a baffle) needs to be set on the inner peripheral wall of the water passage hole 310 facing the slide groove 320 so that when the slider 500 moves into the water passage hole 310 and reduces the opening of the water passage hole 310 to the limit position, the limiting structure can restrict the further movement of the slider 500.

[0098] The number of sliders 500 and grooves 320 can also be multiple and the same, with one slider 500 embedded in each groove 320. The extending directions of the multiple grooves 320 converge at the radial center of the water passage hole 310.

[0099] Since the extension directions of multiple slide grooves 320 converge at the radial center of the water passage hole 310, when multiple sliders 500 move towards the water passage hole 310, they eventually converge and abut against each other at the center of the water passage hole 310 to reduce the opening. When multiple sliders 500 move away from the water passage hole 310, they disperse from the center of the water passage hole 310 to increase the opening. Compared with setting a single slider 500 (and slide groove 320), adjusting the opening of the water passage hole 310 by the convergence and dispersion of multiple sliders 500 shortens the movement path of each slider 500, making the bypass valve 200 more compact. Furthermore, the mutual abutment of multiple sliders 500 restricts further movement of each other, eliminating the need for additional limiting structures. Finally, if one slider 500 fails, the other sliders 500 can continue to operate, preventing the bypass valve 200 from becoming completely unusable.

[0100] Furthermore, when there are multiple sliders 500 and grooves 320, the grooves 320 can be distributed at equal angles or unevenly.

[0101] The equal-angled distribution of the grooves 320 ensures that the resultant force of the corresponding sliders 500 is zero when they abut against each other, thus restricting further movement and preventing the generation of additional external forces, thereby making the bypass valve 200 more stable. When the grooves 320 are unevenly distributed, the manufacturing precision and difficulty of the fixed support 300 are reduced. However, it is necessary to consider whether the paths between the sliders 500 can abut against each other to reduce the opening of the water passage 310, and whether some (or a specific) sliders 500 can be stably limited and prevent further movement when they abut against each other. Furthermore, to ensure structural stability to a minimum, when multiple grooves 320 are unevenly distributed, the extension direction of the grooves 320 should not all be located on one side of the semicircle of the cross-section of the water passage 310. In summary, the equal-angled distribution of the grooves 320 is the optimal choice.

[0102] In this embodiment, there are three sliders 500 and three grooves 320, with one slider 500 embedded in each groove 320. The three grooves 320 extend at equal angles, meaning that the angle between the extension directions of any two adjacent grooves 320 is 120 degrees. Furthermore, the water passage 310 is coaxial with the fixed support 300, and each groove 320 extends both radially outward from the water passage 310 and radially from the fixed support 300, ensuring that the length of each groove 320 is equal and guaranteeing the synchronicity of the movement of the sliders 500.

[0103] Furthermore, such as Figure 8 and Figure 9 As shown, in this embodiment, each slider 500 has an abutment portion 530 at one end facing the water passage 310. The abutment portion 530 protrudes towards the water passage 310, and is trapezoidal in shape when viewed along the radial section of the fixed support 300, thus including two inclined side surfaces 531 and a flat top surface 532. When the three sliders 500 move into the water passage 310, due to the angle limitation between the slide grooves 320, the inclined side surface 531 of the abutment portion 530 of any slider 500 contacts the inclined side surface 531 of the abutment portion 530 of the adjacent slider 500, thereby mutually restricting further movement. The flat top surfaces 532 of the abutment portions 530 of the three sliders 500 form an angle with each other, so that the flat top surfaces 532 enclose a gap, preventing the water passage 310 from being completely closed, and even if the slider 500 moves to the limit position, a certain bypass flow can still be maintained.

[0104] The angle between the inclined side surface 531 and the flat top surface 532 can be adjusted, so that the adjacent inclined side surfaces 531 can be in complete surface contact or only form line contact.

[0105] In other alternative embodiments, the flat top surface 532 may be omitted, so that when the multiple abutting parts 530 abut against each other, no gaps are left, and the water passage hole 310 is completely closed; the abutting part 530 may also be configured as a hemispherical or other shape.

[0106] Furthermore, when there are multiple sliders 500 and grooves 320, the length of the slider 500 is greater than the radius of the water passage hole 310. This ensures that the sliders 500 can abut together, and also prevents the sliders 500 from detaching from the turntable 400 at the water passage hole 310 due to being too short.

[0107] Furthermore, the bypass valve 200 also includes a drive assembly and a connecting rod 700.

[0108] The drive assembly is connected to the turntable 400 via the connecting rod 700. The drive assembly is the power source for the rotation of the turntable 400 and is used to drive the turntable 400 to rotate in the first direction and the second direction, thereby moving the slider 500.

[0109] Specifically, the drive assembly includes a turbine rotor 600, the axial direction of which is parallel to the axial direction of the bypass channel 240. The turbine rotor 600 can rotate in the first direction along the circumference of the bypass channel 240 under the action of water flow, so as to drive the turntable 400 to rotate in the first direction.

[0110] The drive assembly also includes a reset member connected to the turbine rotor 600, which is used to apply a force to the turbine rotor 600 to rotate in a second direction.

[0111] Since the turbine rotor 600 can rotate under the action of water flow, when water flows through the bypass valve 200, the turbine rotor 600 can rotate to drive the turntable 400 to rotate in the first direction; in addition, the reset member is connected to the turbine rotor 600 and drives the turbine rotor 600 to rotate in the opposite direction to drive the turntable 400 to rotate in the second direction.

[0112] Specifically, the reset element includes a coil spring 800, which is connected to the end of the turbine rotor 600 away from the turntable 400. When the turbine rotor 600 rotates under the action of water flow, the coil spring 800 is compressed; when the water flow stops, the coil spring 800 releases its elastic force, driving the turbine rotor 600 to rotate in the opposite direction. In other alternative embodiments, the reset element may also be other devices capable of driving the turbine rotor 600 to rotate in the second direction.

[0113] In this embodiment, the turbine rotor 600 is disposed in the water outlet channel 230 and connected to the turntable 400 located in the bypass channel 240 via the connecting rod 700. Since the turbine rotor 600 only needs to rotate in the circumferential direction of the bypass channel 240 under the action of water flow, in order to avoid the turbine rotor 600 displacing in the axial direction of the bypass channel 240 and coming into contact or colliding with the valve body 210, thereby causing damage to the valve body 210 or the turbine rotor 600, the bypass valve 200 also includes a limiting device, which includes a bracket 901 and a head 902.

[0114] The bracket 901 is fixedly connected to the valve body 210 and is located on the side of the bypass channel 240 near the outlet channel 230. The bracket 901 has a through hole for water flow and a through hole for the connecting rod 700 to pass through. The end of the turbine rotor 600 connected to the connecting rod 700 abuts against the bracket 901, and the connecting rod 700 is connected to the turntable 400 through the through hole. By setting the bracket 901, the movement of the turbine rotor 600 along the axial direction of the bypass channel 240 is restricted.

[0115] The head 902 is connected to the end of the turbine rotor 600 away from the connecting rod 700. The valve body 210 also has a mounting groove 250 located on the side of the head 902 away from the turbine rotor 600, and the head 902 is fixed within the mounting groove 250. Furthermore, a coil spring 800 is connected between the head 902 and the turbine rotor 600, restricting the turbine rotor 600 from moving axially along the bypass channel 240 away from the bypass channel 240 by the coil spring 800 and the head 902.

[0116] In practical use, the overall operation of the bypass valve 200 in this embodiment is as follows:

[0117] When the user restarts the water supply after a water outage, cold water flows from the inlet pipe 110 into the inlet channel 220 of the bypass valve 200. Some of the cold water flows into the bypass channel 240 and then through the water passage 310 in the fixed support 300 and the through hole on the bracket 901 into the outlet channel 230 containing hot water, thus neutralizing the temperature rise caused by the water outage. Driven by the water flow, the turbine rotor 600 rotates, at which time the coil spring 800 connected to the turbine rotor 600 is compressed.

[0118] Since the turbine rotor 600 is confined between the support 901 and the head 902, the turbine rotor 600 only rotates in the circumferential direction of the bypass channel 240. The turntable 400 is connected to the turbine rotor 600 through the connecting rod 700, so that the turntable 400 and the turbine rotor 600 rotate synchronously (at this time, the turntable 400 rotates in the first direction). At the same time, the guide groove 410 provided on the turntable 400 also rotates, and the slider 500 embedded in the slide groove 320 of the fixed support 300 is provided with a serrated connecting part 510. The connecting part 510 abuts against the two side walls of the guide groove 410 on the turntable 400. Under the rotation of the guide groove 410, the slider 500 moves towards the water passage hole 310 along the extension direction of the slide groove 320. Multiple sliders 500 eventually converge and abut against the center of the water passage hole 310, thereby reducing the opening of the water passage hole 310.

[0119] Due to the cooperation between the guide groove 410 and the connecting part 510 on the slider 500, it takes a certain amount of time for the slider 500 to close the opening of the water passage 310. During this process, the bypass channel 240 can maintain a large bypass flow rate, which helps to neutralize the temperature rise during water outages as quickly as possible. When the opening of the water passage 310 is reduced to its limit, the total bypass flow rate decreases, preventing too much cold water from flowing directly out of the outlet channel 230 without heating, thus affecting the outlet water temperature.

[0120] When the user turns off the water, the water flow stops, and the turbine rotor 600 is no longer subjected to the force of the water flow. The compressed coil spring 800 releases its elasticity, causing the turbine rotor 600 to rotate in the opposite direction. At the same time, the turntable 400 rotates in the opposite direction (at this time, the turntable 400 rotates in the second direction). Simultaneously, the guide groove 410 on the turntable 400 also rotates in the opposite direction. Driven by the guide groove 410, the slider 500 moves along the extension direction of the slide groove 320 away from the water passage hole 310 to increase the opening of the water passage hole 310. The above operation process is repeated after the user turns the water back on.

[0121] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0122] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention 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 invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A bypass valve comprising a valve body, a water inlet channel, a water outlet channel and a bypass channel being communicated with the water inlet channel and the water outlet channel are arranged in the valve body; characterized in that: the bypass valve further comprises a fixed support, a rotating disc and a sliding block; the fixed support is arranged in the bypass channel and fixed on the valve body, the fixed support comprises a water passing hole penetrating through two ends in the axial direction of the bypass channel and a sliding groove arranged on the radial outer side of the water passing hole, one end of the sliding groove extends to the water passing hole; the rotating disc is arranged on one side of the fixed support in the axial direction of the bypass channel, the rotating disc is rotatably connected with the fixed support, and the rotating disc is arranged to be able to rotate in a circumferential direction of the bypass channel towards a first direction and a second direction, wherein the first direction and the second direction are two opposite directions; the sliding block is arranged at one end of the fixed support away from the rotating disc, the sliding block is embedded in the sliding groove, the sliding block can slide along the extension direction of the sliding groove, and the sliding block is movably connected with the rotating disc, when the rotating disc rotates towards the first direction, the sliding block moves along the extension direction of the sliding groove towards the water passing hole to reduce the opening of the water passing hole; when the rotating disc rotates towards the second direction, the sliding block moves along the extension direction of the sliding groove away from the water passing hole to increase the opening of the water passing hole; a helical guide groove extending along the circumferential direction of the bypass channel is arranged on the side of the rotating disc facing the fixed support, a connecting part is arranged on the side of the sliding block facing the rotating disc, the connecting part is accommodated in the guide groove, the connecting part abuts against the two side walls of the guide groove, and the connecting part is movably accommodated in the guide groove to convert the rotary motion of the rotating disc into the linear motion of the sliding block; the bypass valve further comprises a driving assembly and a connecting rod, the driving assembly is connected with the rotating disc through the connecting rod, and the driving assembly is used for driving the rotating disc to rotate towards the first direction and the second direction; the driving assembly comprises a turbine rotor, the axial direction of the turbine rotor is parallel to the axial direction of the bypass channel, and the turbine rotor can rotate along the circumferential direction of the bypass channel towards the first direction under the action of water flow to drive the rotating disc to rotate towards the first direction; the driving assembly further comprises a reset member connected with the turbine rotor, and the reset member is used for applying a force to the turbine rotor towards the second direction of rotation.

2. The bypass valve of claim 1, wherein The connecting part is sawtooth-shaped, the connecting part comprises a plurality of teeth, the plurality of teeth are arranged at intervals along the extension direction of the sliding groove, and any tooth abuts against the two side walls of the guide groove.

3. The bypass valve of claim 1, wherein In the circumferential direction of the bypass channel, a protruding part is arranged on the circumferential side wall of one of the sliding block and the sliding groove, and a groove is arranged on the circumferential side wall of the other one, and the protruding part is movably accommodated in the groove.

4. The bypass valve of claim 1, wherein One end of the sliding groove away from the water passing hole abuts against the inner circumferential wall of the bypass channel.

5. The bypass valve of claim 1, wherein The number of the sliding blocks and the number of the sliding grooves are the same and each of the sliding grooves is embedded with one of the sliding blocks; The extension directions of the plurality of the sliding grooves intersect at the radial center of the water passing hole.

6. The bypass valve of claim 5, wherein The length of the sliding block is greater than the radius of the water passing hole.

7. The bypass valve of claim 1, wherein The reset member comprises a coil spring connected to the end of the turbine rotor away from the rotating disc.

8. A water heater, characterized by The water heater comprises the bypass valve according to any one of claims 1-7.

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