Flow regulating valve at water inlet end of water heater

Abstract

The utility model provides a flow regulating valve at a water inlet end of a water heater. The flow regulating valve comprises a valve body and a valve core assembly, the valve body is provided with a water inlet pipe, a water outlet pipe and a valve element cavity. The valve element assembly comprises a fixing part, a flow adjusting part and a shaft core. The fixed part is fixed in the valve core cavity; the flow adjusting component is rotatably mounted in the valve core cavity relative to the fixed component; the shaft core is rotatably mounted on the valve body around a preset axis; the shaft core is connected with the flow adjusting component so as to drive the flow adjusting component to rotate. A water inlet hole is formed in the fixing part; a shielding part is arranged on the flow adjusting component; the shielding part is attached to the fixing part, and the shielding part can cover part or all of the area of the water inlet hole when the flow adjusting part rotates. According to the flow regulating valve in the technical scheme, the shielding part of the flow regulating component is rotationally matched with the fixing component to regulate the shielding area of the shielding part on the water inlet hole, so that the size of the water inlet hole is changed, and water inlet flow regulation is realized; the structure is simple and easy to implement.

Description

Technical Field

[0001] The utility model relates to a flow regulating valve at the water inlet end of a water heater. Background Art

[0002] Water heaters are household appliances commonly used in people's daily lives. During the use of existing water heaters, when the water is turned off for a short time and hot water is used again, the water temperature will change, affecting the user's experience.

[0003] In order to improve user experience, some water heaters are provided with a flow regulating valve at the water inlet to adjust the water flow rate to reduce water temperature fluctuations, such as the multifunctional flow regulating valve and water heater disclosed in Chinese invention patent application CN115388210A.

[0004] However, the valve core assembly of the multifunctional flow regulating valve includes a first flow control component and a second flow control component; the first flow control component includes a rotating moving component and a first shielding component, and the first shielding component is arranged on the rotating moving component; the second flow control component includes a mounting component and a second shielding component, and the second shielding component is arranged on the mounting component; an elastic component is also arranged between the mounting component and the rotating moving component. Its structure is complex and the installation is cumbersome, which is not conducive to popularization and implementation. Utility Model Content

[0005] The utility model aims to provide a flow regulating valve at the water inlet end of a water heater, comprising a valve body and a valve core assembly installed in the valve body; the valve body is provided with an inlet pipe, an outlet pipe and a valve core cavity connected with the inlet pipe and the outlet pipe; the valve core assembly comprises a fixed component, a flow regulating component and an axis core; the fixed component is fixed in the valve core cavity; the flow regulating component is rotatably installed in the valve core cavity relative to the fixed component; the axis core is rotatably installed on the valve body around a predetermined axis; the axis core is connected to the flow regulating component to drive the flow regulating component to rotate; the fixed component is provided with a water inlet hole; the flow regulating component is provided with a shielding part; the shielding part is in contact with the fixed component, and the shielding part can cover part or all of the area of ​​the water inlet hole when the flow regulating component rotates.

[0006] The flow regulating valve of the present technical solution adjusts the covering area of ​​the water inlet hole by the blocking part of the flow regulating component and the rotating cooperation with the fixed component, thereby changing the size of the water inlet hole and realizing water inlet flow regulation; the structure is simple and easy to implement.

[0007] In addition, the technical solution drives the flow regulating component to rotate by rotating the shaft core. The flow regulating component and the shaft core are designed separately, and the two can be processed with different materials and then assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the utility model.

[0009] Figure 2 It is a cross-sectional view of the utility model.

[0010] Figure 3 It is a structural exploded view of the utility model.

[0011] Figure 4 and Figure 5 Exploded views of the valve core assembly of the utility model at different angles.

[0012] Figure 6 It is a sectional exploded view of the valve core assembly of the utility model.

[0013] Figure 7 It is a structural schematic diagram of the driven gear of the utility model.

[0014] Figure 8 It is a cross-sectional view of the valve body of the utility model.

[0015] Fig. 9 It is a structural schematic diagram of the valve body of the utility model. DETAILED DESCRIPTION

[0016] The present application scheme is further described as follows in conjunction with the accompanying drawings:

[0017] See attached Figure 1-9 A water inlet end flow regulating valve of a water heater comprises a valve body 1, a valve core assembly 2 installed in the valve body 1, a valve cover 3 and a driving mechanism 4 installed on the valve cover 3.

[0018] The valve body 1 is provided with an inlet pipe 11, an outlet pipe 12 and a valve core cavity 13 communicating with the inlet pipe 11 and the outlet pipe 12; the inlet pipe 11 is used to connect to an external water source, and water flows through the inlet pipe 11 into the valve core cavity 13 and then flows to the outlet pipe 12. Figure 2 The valve core assembly 2 is used to adjust the water flow into the water outlet pipe 12.

[0019] The valve core assembly 2 includes a fixing component 21 , a flow regulating component 22 and a shaft core 23 .

[0020] The fixing component 21 is fixed in the valve core cavity 13; the flow regulating component 22 is rotatably installed in the valve core cavity 13 relative to the fixing component 21; the shaft core 23 is rotatably installed on the valve body 1 around a predetermined axis L; the shaft core 23 is connected to the flow regulating component 22 to drive the flow regulating component 22 to rotate.

[0021] The fixed component 21 is provided with a water inlet hole 211 connected with the water inlet pipe 11 and the water outlet pipe 12; the flow regulating component 22 is provided with a shielding portion 221; the shielding portion 221 is in contact with the fixed component 21, and the shielding portion 221 can cover part or all of the area of ​​the water inlet hole 211 when the flow regulating component 22 rotates.

[0022] The flow regulating valve of the present technical solution adjusts the covering area of ​​the water inlet hole 211 by the blocking part 221 of the flow regulating component 22 and the rotating cooperation with the fixing component 21, thereby changing the size of the water inlet hole 211 to achieve water inlet flow regulation; the structure is simple and easy to implement.

[0023] In addition, the technical solution drives the flow regulating component 22 to rotate by rotating the shaft core 23. The flow regulating component 22 and the shaft core 23 are designed separately, and the two can be processed with different materials and then assembled.

[0024] In this embodiment, the water inlet pipe 11 intersects vertically with one end of the water outlet pipe 12 , and the valve core cavity 13 is located at the intersection of the water inlet pipe 11 and the water outlet pipe 12 ; the predetermined axis is on the axis of the water outlet pipe 12 .

[0025] The flow regulating component 22 is made of ceramic material. The contact surface between the flow regulating component 22 and the fixing component 21 is a smooth surface; specifically, the contact surface between the flow regulating component 22 and the fixing component 21 is a polished surface.

[0026] The flow regulating component 22 of the present technical solution is made of ceramic material, which has a smaller coefficient of thermal expansion and contraction, and the rotating friction contact surface of the flow regulating component 22 is polished. Therefore, it can reduce friction and reduce the torque of the driving motor 41 while ensuring water tightness.

[0027] The shielding portion 221 and the water inlet 211 are fan-shaped; the fan-shaped design allows the covering area of ​​the water inlet 211 by the shielding portion 221 to change evenly according to the rotation angle of the flow regulating component 22, which is convenient for automatic control setting of flow regulation.

[0028] The water inlet hole 211 extends along the water flow direction and has a water inlet end and a water outlet end. The shielding portion 221 is in contact with the water inlet end of the water inlet hole 211. The water outlet end of the water inlet hole 211 is provided with a conical surface 212 to play a role in guiding flow.

[0029] The water inlet holes 211 include at least two, and the water inlet holes 211 are arranged at intervals around the predetermined axis L; the number and position of the shielding parts 221 correspond to the water inlet holes 211 .

[0030] In this embodiment, two water inlet holes 211 are provided, and the two water inlet holes 211 are symmetrically arranged.

[0031] A limiting protrusion 213 is provided on the side of the fixing component 21 ; a limiting groove 131 is provided on the cavity wall of the valve core cavity 13 ; the limiting protrusion 213 falls into the limiting groove 131 to limit the axial rotation of the fixing component 21 and fix it.

[0032] A clamping joint 231 is provided at one end of the shaft core 23, and a clamping groove 222 is provided on the side of the flow regulating component 22 opposite to the shielding portion 221. The clamping joint 231 is inserted into the clamping groove 222 and is clamped and connected with the clamping groove 222. In this embodiment, the clamping joint 231 is in the shape of a rectangular protrusion.

[0033] The valve core cavity 13 is provided with a cavity opening 132 for the shaft core 23 to penetrate therein; the valve cover 3 is mounted on the valve body 1 to seal the cavity opening 132 of the valve core cavity 13;

[0034] The valve cover 3 is provided with an axial hole 31, and the shaft core 23 is inserted into the axial hole 31 and rotatably cooperates with the axial hole 31;

[0035] The driving mechanism 4 is connected to the shaft core 23 to drive the shaft core 23 to rotate.

[0036] The existing valve core assembly, such as the multifunctional flow regulating valve and water heater disclosed in the Chinese invention patent application CN115388210A, comprises a shaft sleeve, the shaft sleeve is provided with a threaded hole, the rotating moving part (shaft core) passes through the shaft sleeve, the threaded part is threadedly connected in the threaded hole, and the shaft sleeve is provided on the valve housing. That is, during installation, the threaded shaft sleeve needs to be nested in the pipe and threadedly engaged with the shaft core to lock the valve core. This installation method is difficult to maintain consistency when tightening the threads, and it is possible to tighten the threads by half a turn or less, which easily leads to inconsistent angle ranges of the shaft core rotation, affecting the accuracy of the flow regulation operation and not conducive to the implementation of electric control.

[0037] The shaft core 23 of the present technical solution is directly rotatably matched with the shaft hole 31 of the valve cover 3. The rotation range of the shaft core 23 can be kept consistent with the setting, and there is no need to set a threaded sleeve to match, thereby reducing the difficulty of production and installation.

[0038] In addition, the present technical solution installs the drive mechanism 4 on the valve cover 3 to avoid installing it directly on the valve body 1. There is no need to design a structure for installing the drive on the valve body 1, so as to simplify the structure of the valve body 1 and reduce the manufacturing difficulty and production cost of the valve body 1.

[0039] A first sealing ring 24 is sleeved on the shaft core 23 . The first sealing ring 24 is located between the shaft core 23 and the shaft hole 31 and plays a role of damping, fixing and sealing. In this embodiment, two first sealing rings 24 are provided.

[0040] A second sealing ring 32 is sandwiched between the valve cover 3 and the valve core cavity 13 to improve the sealing performance of the valve cover 3 .

[0041] A third sealing ring 25 is disposed between the fixing member 21 and the valve core cavity 13 to prevent water from leaking out of the gap between the fixing member 21 and the valve core cavity 13 without passing through the water inlet hole 211, thereby affecting the accuracy of flow regulation.

[0042] The driving mechanism 4 includes a driving motor 41, a driving gear 42 and a driven gear 43. The valve cover 3 is provided with a motor mounting portion 33 for mounting the driving motor 41, and the driving motor 41 is mounted on the motor mounting portion 33 of the valve cover 3. The output shaft of the driving motor 41 is connected to the driving gear 42; the driving gear 42 and the driven gear 43 are meshed. A gear joint 232 is provided at one end of the shaft core 23, and a tooth groove 431 is provided on the driven gear 43, and the gear joint 232 is inserted into the tooth groove 431. In this embodiment, the driven gear 43 is fan-shaped. The gear joint 232 and the clamping joint 231 are respectively located at the two ends of the shaft core 23.

[0043] The valve cover 3 is provided with a controller 44 which is electrically connected to the driving motor 41 .

[0044] The valve body 1 is provided with a water flow measurement chamber 14 penetrated by a water outlet pipe 12 ; the valve body 1 is installed with an impeller flowmeter 5 ; the impeller of the impeller flowmeter 5 is placed in the water flow measurement chamber 14 ; the impeller flowmeter 5 is electrically connected to the controller 44 .

[0045] The impeller flowmeter 5 can monitor the water flow and send a signal of the monitoring result to the controller 44. The controller 44 drives the motor 41 to adjust the size of the water inlet hole 211 according to the feedback flow.

[0046] The above-mentioned preferred implementation modes should be regarded as illustrative examples of the implementation modes of the present application scheme. Any technical deductions, replacements, improvements, etc. that are identical or similar to the present application scheme or made based on this scheme should be regarded as within the scope of protection of this patent.

Claims

1. A water heater water inlet end flow regulating valve, comprising a valve body and a valve core assembly installed in the valve body; the valve body is provided with a water inlet pipe, a water outlet pipe and a valve core cavity connected with the water inlet pipe and the water outlet pipe; characterized in that: The valve core assembly includes a fixing component, a flow regulating component and a shaft core; The fixing component is fixed in the valve core cavity; the flow regulating component is rotatably mounted in the valve core cavity relative to the fixing component; the shaft core is rotatably mounted on the valve body around a predetermined axis; the shaft core is connected to the flow regulating component to drive the flow regulating component to rotate; The fixed component is provided with a water inlet hole; the flow regulating component is provided with a shielding portion; the shielding portion is in contact with the fixed component, and the shielding portion can cover part or all of the area of ​​the water inlet hole when the flow regulating component rotates.

2. The water heater water inlet end flow regulating valve according to claim 1, characterized in that: The flow regulating component is made of ceramic material; The contact surface between the flow regulating component and the fixing component is a smooth surface; The contact surface between the flow regulating component and the fixing component is a polished surface.

3. The water inlet end flow regulating valve of the water heater according to claim 1 or 2, characterized in that: The shielding portion and the water inlet hole are fan-shaped; The water inlet hole has a water inlet end and a water outlet end, the shielding portion is in contact with the water inlet end of the water inlet hole, and the water outlet end of the water inlet hole is provided with a conical surface; The water inlet holes include at least two, and the water inlet holes are arranged at intervals around a predetermined axis; the number and positions of the shielding parts correspond to the water inlet holes.

4. The water heater water inlet end flow regulating valve according to claim 1, characterized in that: A limiting protrusion is provided on the side of the fixing component; A limiting groove is provided on the cavity wall of the valve core cavity; The limiting protrusion falls into the limiting groove.

5. The water inlet end flow regulating valve of the water heater according to claim 1, characterized in that: One end of the shaft core is provided with a clamping joint, the flow regulating component is provided with a clamping groove, and the clamping joint is inserted into the clamping groove and is clamped and connected with the clamping groove.

6. The water inlet end flow regulating valve of the water heater according to claim 1, characterized in that: Also includes a valve cover and a driving mechanism mounted on the valve cover; The valve core cavity is provided with a cavity opening for the shaft core to penetrate therein; the valve cover is installed on the valve body to seal the cavity opening of the valve core cavity; The valve cover is provided with an axial hole, and the shaft core is inserted into the axial hole and rotatably matched with the axial hole; The driving mechanism is connected to the shaft core to drive the shaft core to rotate.

7. The water heater water inlet end flow regulating valve according to claim 6, characterized in that: A first sealing ring is sleeved on the shaft core, and the first sealing ring is located between the shaft core and the shaft hole; A second sealing ring is sandwiched between the valve cover and the valve core cavity; A third sealing ring is sandwiched between the fixing component and the valve core cavity.

8. The water inlet end flow regulating valve of the water heater according to claim 6, characterized in that: The driving mechanism comprises a driving motor, a driving gear and a driven gear; The valve cover is provided with a motor mounting portion for mounting a driving motor, and the driving motor is mounted on the motor mounting portion of the valve cover; The output shaft of the driving motor is connected to the driving gear; the driving gear is meshed with the driven gear; One end of the shaft core is provided with a gear joint, the driven gear is provided with a tooth groove, and the gear joint is inserted in the tooth groove.

9. The water heater water inlet end flow regulating valve according to claim 8, characterized in that: A controller electrically connected to the drive motor is installed on the valve cover.

10. The water inlet end flow regulating valve of the water heater according to claim 9, characterized in that: The valve body is provided with a water flow measurement chamber penetrated by the water outlet pipe; The valve body is provided with an impeller flow meter; the impeller of the impeller flow meter is placed in the water flow measurement chamber; The impeller flowmeter is electrically connected to the controller.

Images