Water inlet assembly and water heater

Abstract

The utility model discloses a water inlet assembly and water heater relates to water heater technical field, wherein, water inlet assembly includes flow sensor, water inlet joint and locking structure, the flow sensor includes valve body and magnetic rotor subassembly, the valve body has the flow channel, the flow channel has the water inlet interface, the magnetic rotor subassembly is located in the flow channel, the flow channel is equipped with the limiting portion, the one end of magnetic rotor subassembly is away from water inlet interface and abuts with limiting portion, the water outlet end is inserted in the flow channel from the water inlet interface and is used for limiting the other end of magnetic rotor subassembly, the utility model provides technical scheme can make magnetic rotor subassembly be limited between the water outlet end of water inlet joint and limiting portion, make magnetic rotor subassembly get effective fixed, avoid magnetic rotor subassembly to come loose after assembling and using, influence flow sensor's use function.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a water inlet component and a water heater. Background Technology

[0002] During the assembly of a water heater, an inlet assembly is typically installed at the inlet end, and the inlet flow rate is detected by a flow sensor in the inlet assembly. When using a flow sensor based on the Hall effect principle, a magnetic rotor assembly needs to be installed inside the flow channel of the inlet assembly. However, existing magnetic rotor assemblies cannot be properly installed and limited within the flow channel, and may become loose after assembly under the influence of water flow or external force. Utility Model Content

[0003] The main purpose of this utility model is to provide a water inlet component and a water heater, which aims to prevent the magnetic rotor component from becoming loose after assembly and use.

[0004] To achieve the above objectives, the water inlet assembly proposed in this utility model includes: A flow sensor includes a valve body and a magnetic rotor assembly. The valve body has a flow channel with a water inlet. The magnetic rotor assembly is disposed in the flow channel and a limiting part is provided in the flow channel. The end of the magnetic rotor assembly away from the water inlet abuts against the limiting part. A water inlet connector, having a water outlet end, the water outlet end being inserted into the flow channel from the water inlet interface, for limiting the other end of the magnetic rotor assembly; and A locking structure is used to lock and fix the flow sensor to the water inlet connector.

[0005] In one embodiment, the locking structure includes a fastener and a threaded component disposed on the valve body. The threaded component has a threaded hole disposed along the extension direction of the flow channel. The water inlet connector has a connecting hole disposed along the extension direction of the flow channel. The connecting hole communicates with the threaded hole. The fastener passes through the connecting hole and the threaded hole and is threadedly connected to the threaded hole.

[0006] In one embodiment, the valve body has a positioning part located on the periphery of the water inlet interface, and the water inlet connector has a positioning mating part located on the outer surface of the water inlet connector. The positioning part and the positioning mating part are positioned and mated to make the connecting hole communicate with the threaded hole.

[0007] In one embodiment, the connecting hole is formed in the positioning mating part, and the threaded part is provided in the positioning part.

[0008] In one embodiment, the positioning part has a receiving groove, the threaded part is disposed in the receiving groove, and the positioning part has a mating hole that connects the threaded hole and the connecting hole.

[0009] In one embodiment, the threaded part is integrally formed with the valve body.

[0010] In one embodiment, the water inlet connector includes a body section and an insertion section, the water outlet is the end of the insertion section away from the body section, the insertion section is inserted into the flow channel, and the insertion section is fitted with a plurality of sealing rings, which are sealed to the inner circumferential wall of the flow channel.

[0011] In one embodiment, the insertion segment has multiple limiting grooves, the limiting grooves are arranged around the outer surface of the insertion segment, and the sealing ring is limited and disposed within the limiting grooves.

[0012] In one embodiment, the flow sensor further includes a buffer element disposed within the flow channel and located between the magnetic rotor assembly and the water outlet. One end of the buffer element abuts against the magnetic rotor assembly, and the other end abuts against the water outlet. And / or, the limiting part is a stepped surface provided in the flow channel, and the stepped surface is disposed facing the magnetic rotor assembly.

[0013] This utility model also proposes a water heater, including the water inlet component as described above.

[0014] The technical solution of this utility model is to set the water inlet assembly including a flow sensor, a water inlet connector, and a locking structure. The flow sensor includes a valve body and a magnetic rotor assembly. The magnetic rotor assembly is set in the flow channel of the valve body, with one end of the magnetic rotor assembly abutting against the limiting part in the flow channel. The outlet end of the water inlet connector is inserted into the flow channel from the water inlet interface, limiting the other end of the magnetic rotor assembly. After the flow sensor and the water inlet connector are locked and fixed by the locking structure, the magnetic rotor assembly is limited between the outlet end of the water inlet connector and the limiting part, so that the magnetic rotor assembly is effectively fixed and prevents the magnetic rotor assembly from loosening after assembly and use, which would affect the function of the flow sensor. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of an embodiment of the water heater provided by this utility model; Figure 2 A schematic diagram of the structure of an embodiment of the water inlet assembly provided by this utility model; Figure 3 for Figure 2 A schematic diagram of a medium flow sensor embodiment; Figure 4 for Figure 3 A schematic diagram of the flow sensor from another angle; Figure 5 for Figure 2 A schematic diagram of a structural embodiment of the central water inlet connector; Figure 6 for Figure 2 Partial cross-sectional view of the central water inlet assembly.

[0017] Explanation of icon numbers: 1000, Water heater; 100. Inlet assembly; 10. Flow sensor; 101. Inlet interface; 103. Flow channel; 11. Valve body; 111. Limiting part; 112. Positioning part; 1121. Receiving groove; 1122. Docking hole; 1123. Positioning groove; 12. Magnetic rotor assembly; 20. Inlet connector; 201. Outlet end; 202. Inlet end; 21. Positioning mating part; 211. Connecting hole; 22. Body section; 23. Insertion section; 231. Sealing ring; 232. Limiting groove; 30. Locking structure; 31. Fastener; 32. Threaded part; 321. Threaded hole; 40. Buffer part; 50. Filter screen; 200. Fan; 301. Water inlet pipe; 302. Water outlet pipe; 400. Heat exchange device; 500. Burner.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] During the assembly of a water heater, an inlet assembly is typically installed at the inlet end, and the inlet flow rate is detected by a flow sensor in the inlet assembly. When using a flow sensor based on the Hall effect principle, a magnetic rotor assembly needs to be installed inside the flow channel of the inlet assembly. However, existing magnetic rotor assemblies cannot be properly installed and limited within the flow channel, and may become loose after assembly under the influence of water flow or external force.

[0023] This utility model proposes a water inlet component 100.

[0024] Please see Figures 2 to 6 As shown, in one embodiment of this utility model, the water inlet assembly 100 includes a flow sensor 10, a water inlet connector 20, and a locking structure 30; the flow sensor 10 includes a valve body 11 and a magnetic rotor assembly 12, the valve body 11 has a flow channel 103, the flow channel 103 has a water inlet interface 101, the magnetic rotor assembly 12 is disposed in the flow channel 103, the flow channel 103 is provided with a limiting part 111, one end of the magnetic rotor assembly 12 away from the water inlet interface 101 abuts against the limiting part 111, and the water outlet 201 is inserted from the water inlet interface 101 into the flow channel 103 to limit the other end of the magnetic rotor assembly 12.

[0025] The water inlet component 100 of this utility model can be installed in the water inlet pipe of the water heater 1000 to monitor the water flow data of the water inlet pipe of the water heater 1000. Specifically, it can be set at the water inlet end 202 of the water inlet pipe, and the water inlet connector 20 can be used as an external water inlet of the water inlet pipe of the water heater 1000.

[0026] It is understood that the flow sensor 10 can be a flow sensor using the Hall effect. The flow sensor 10 can also include a Hall sensor disposed outside the valve body 11. When there is flowing water in the flow channel 103, the water flow can drive the impeller of the magnetic rotor assembly 12 to rotate, thereby generating a periodically changing magnetic field. After sensing the magnetic field, the Hall sensor outputs a pulse signal that is positively correlated with the flow rate, thereby realizing the measurement of water flow.

[0027] The magnetic rotor assembly 12 may include a mounting bracket and an impeller rotatably mounted on the bracket. In order to prevent the magnetic rotor assembly 12 from becoming loose and displaced when the impeller rotates and during the transport of the flow sensor 10, the magnetic rotor assembly 12 needs to be limited within the flow channel 103. Since the impeller needs to rotate, the mounting bracket needs to be limited to prevent the magnetic rotor assembly 12 from becoming loose and displaced.

[0028] Therefore, this invention provides a limiting part 111 within the flow channel 103 of the valve body 11. When the magnetic rotor assembly 12 is inserted into the flow channel 103 from the water inlet 101, it can abut against the limiting part 111. The limiting part 111 can be configured as a stepped surface within the flow channel 103 facing the water inlet 101, with the magnetic rotor assembly 12 abutting against the stepped surface. The other end of the magnetic rotor assembly 12 can be inserted into the flow channel 103 through the outlet end 201 of the water inlet connector 20 when the flow sensor 10 is installed with the water inlet connector 20. The outlet end 201 of the water inlet connector 20 limits the other end of the magnetic rotor assembly 12. After the flow sensor 10 and the water inlet connector 20 are locked and fixed by the locking structure 30, the magnetic rotor assembly 12 can be fixed within the flow channel 103.

[0029] The limiting of the other end of the magnetic rotor assembly 12 by the outlet end 201 of the inlet connector 20 can be achieved by directly abutting against the magnetic rotor assembly 12, or by setting a buffer 40 between the magnetic rotor assembly 12 and the outlet end 201 of the inlet connector 20, and indirectly abutting against the magnetic rotor assembly 12 through the buffer 40. No specific limitation is made here.

[0030] The technical solution of this utility model is to set the water inlet assembly 100, which includes a flow sensor 10, a water inlet connector 20, and a locking structure 30. The flow sensor 10 includes a valve body 11 and a magnetic rotor assembly 12. The magnetic rotor assembly 12 is set in the flow channel 103 of the valve body 11, with one end of the magnetic rotor assembly 12 abutting against the limiting part 111 in the flow channel 103. The outlet end 201 of the water inlet connector 20 is inserted into the flow channel 103 from the water inlet interface 101 to limit the other end of the magnetic rotor assembly 12. After the flow sensor 10 and the water inlet connector 20 are locked and fixed by the locking structure 30, the magnetic rotor assembly 12 is limited between the outlet end 201 of the water inlet connector 20 and the limiting part 111, so that the magnetic rotor assembly 12 is effectively fixed and prevents the magnetic rotor assembly 12 from loosening after assembly and use, which would affect the function of the flow sensor 10.

[0031] The specific settings of the locking structure 30 are described below, such as... Figure 3 , Figure 6 As shown, in one embodiment, the locking structure 30 includes a fastener 31 and a threaded member 32 disposed on the valve body 11. The threaded member 32 has a threaded hole 321 disposed along the extension direction of the flow channel 103. The water inlet connector 20 has a connecting hole 211 disposed along the extension direction of the flow channel 103. The connecting hole 211 communicates with the threaded hole 321. The fastener 31 passes through the connecting hole 211 and the threaded hole 321 and is threadedly connected to the threaded hole 321.

[0032] It is understood that the outer surface of the fastener 31 can be provided with an external thread groove that matches the internal thread of the threaded hole 321. The fastener 31 can be a screw or a threaded rod. By passing the fastener 31 through the connecting hole 211 and the threaded hole 321 and threadedly connecting it with the threaded part 32, not only can the water inlet connector 20 be locked onto the flow sensor 10, but also the thread engagement between the fastener 31 and the threaded hole 321 can push the water inlet connector 20 to move into the flow channel 103 along with the fastener 31 and abut against the magnetic rotor assembly 12. In this way, the movement depth of the water inlet connector 20 in the flow channel 103 can be controlled, avoiding the water inlet connector 20 from being inserted too deeply into the flow channel 103 and squeezing the magnetic rotor assembly 12, which would cause damage to the magnetic rotor assembly 12.

[0033] When inserting the water inlet connector 20 into the flow channel 103, to prevent the water inlet connector 20 from deflecting and causing the connecting hole 211 and the threaded hole 321 to fail to connect effectively, such as... Figure 4 , Figure 5As shown, in one embodiment, the valve body 11 has a positioning part 112, which is disposed on the periphery of the water inlet interface 101. The water inlet connector 20 has a positioning mating part 21, which is disposed on the outer surface of the water inlet connector 20. The positioning part 112 and the positioning mating part 21 are positioned and mated to make the connecting hole 211 communicate with the threaded hole 321.

[0034] The positioning part 112 can be a first connecting ear protruding from the outer surface of the valve body 11. The connecting ear is used to install the threaded part 32. The positioning part 112 can have a positioning groove 1123 on the side facing the water inlet connector 20. The positioning mating part 21 can be a second connecting ear protruding from the outer surface of the water inlet connector 20. The second connecting ear has a connecting hole 211. The second connecting ear can be inserted into the positioning groove 1123, thereby realizing the positioning mating of the positioning part 112 and the positioning mating part 21. When the second connecting ear is inserted into the positioning groove 1123, the connecting hole 211 on the second connecting ear can communicate with the threaded hole 321 of the threaded part 32 on the first connecting ear. This facilitates the communication between the connecting hole 211 and the threaded hole 321, facilitates the installation of the fastener 31, and is beneficial to the automated assembly of the flow sensor 10 and the water inlet connector 20.

[0035] like Figure 3 , Figure 6 As shown, in one embodiment, the connecting hole 211 is formed in the positioning mating part 21, and the threaded part 32 is provided in the positioning part 112.

[0036] When the connecting hole 211 is located in the positioning mating part 21 and the threaded part 32 is located in the positioning part 112, the positioning part 112 and the positioning mating part 21 can be configured as described above, which will not be repeated here. This configuration eliminates the need for additional structures to create the connecting hole 211 and to configure the threaded part 32 for mounting and fixing on the valve body 11. The positioning part 112 and the positioning mating part 21 can not only serve to position the connecting hole 211 and the threaded hole 321, but also to provide the connecting hole 211 and configure the threaded part 32. This avoids the need for complex structures of the flow sensor 10 and the water inlet connector 20, which would increase the cost of the water inlet assembly 100.

[0037] like Figure 3 As shown, the positioning part 112 has a receiving groove 1121, the threaded part 32 is disposed in the receiving groove 1121, the positioning part 112 has a mating hole 1122, and the mating hole 1122 connects the threaded hole 321 and the connecting hole 211.

[0038] The receiving groove 1121 may have an opening for inserting the threaded component 32. The threaded component 32 is inserted into the receiving groove 1121 through the opening, and the insertion direction of the threaded component 32 may be intersected with the assembly direction of the fastener 31 and the threaded component 32. This prevents the threaded component 32 from falling out of the receiving groove 1121 after the threaded fastener 31 is threadedly locked. The mating hole 1122 may be formed in the groove wall of the receiving groove 1121 near the positioning mating part 21, and extends through the groove wall to the positioning groove 1123.

[0039] In addition, in order to prevent the threaded part 32 from rotating with the fastener 31 when the fastener 31 is threadedly assembled with the threaded part 32, the two side walls of the receiving groove 1121 can be provided to limit the rotation of the threaded part 32 along the axial direction by limiting the rotation of the threaded part 32.

[0040] When the fastener 31 is a screw or threaded rod, after the fastener 31 passes through the threaded hole 321, in order to avoid interference between the other side of the receiving groove 1121 and the fastener 31, a notch can be opened through the other side of the receiving groove 1121 for the fastener 31 to pass through. The size of the notch is smaller than the size of the threaded part 32 to prevent the threaded part 32 from falling off.

[0041] Optionally, the threaded part 32 is integrally formed with the valve body 11.

[0042] With this configuration, the threaded part 32 and the valve body 11 can be integrally formed before the flow sensor 10 and the water inlet connector 20 are assembled. There is no need to install the threaded part 32 separately during assembly. This allows the flow sensor 10 and the water inlet connector 20 to be installed only along the first direction, which is the extension direction of the flow channel 103. This facilitates the automated assembly between the flow sensor 10 and the water inlet connector 20.

[0043] The following is a further introduction to the water inlet connector 20, such as... Figure 5 , Figure 6 As shown, in one embodiment, the water inlet connector 20 includes a body section 22 and an insertion section 23. The water outlet 201 is the end of the insertion section 23 away from the body section 22. The insertion section 23 is inserted into the flow channel 103. The insertion section 23 is fitted with a plurality of sealing rings 231, and the plurality of sealing rings 231 are sealed with the inner peripheral wall of the flow channel 103.

[0044] It is understandable that the inlet connector 20 is configured as a body section 22 and an insertion section 23. The body section 22 can be used to set the main connector of the inlet connector 20, such as the inlet end 202, filter screen 50, positioning mating part 21, and corresponding switch valve structure. The insertion section 23 can be specifically set for connection with the flow sensor 10. Multiple sealing rings 231 are set in the insertion section 23 to seal and fit with the inner wall of the flow channel 103. With this configuration, multiple sealing structures are formed between the outer wall of the insertion section 23 and the inner wall of the flow channel 103 through the multiple sealing rings 231. Combined with the locking structure 30 to lock and fix the inlet connector 20 and the flow sensor 10, the connection sealing between the inlet connector 20 and the flow sensor 10 can be improved.

[0045] like Figure 5 , Figure 6 As shown, in one embodiment, the insertion segment 23 has a plurality of limiting grooves 232, the limiting grooves 232 are arranged around the outer surface of the insertion segment 23, and the sealing ring 231 is limited and disposed in the limiting grooves 232.

[0046] Understandably, when the insertion section 23 is inserted into the flow channel 103 from the water inlet 101, there is contact friction between the inner wall of the flow channel 103 and the sealing ring 231. The thrust generated by the contact friction will push the sealing ring 231 towards the body section 22, causing the sealing ring 231 to shift. To address this, multiple limiting grooves 232 are provided in the insertion section 23 to limit the sealing ring 231 within the limiting grooves 232, thus limiting the sealing ring 231. This prevents the sealing ring 231 from shifting during the movement of the insertion section 23 into the flow channel 103, which would result in poor sealing between the water inlet connector 20 and the flow sensor 10.

[0047] like Figure 6 As shown, optionally, the flow sensor 10 further includes a buffer 40, which is disposed in the flow channel 103 and located between the magnetic rotor assembly 12 and the water outlet 201. One end of the buffer 40 abuts against the magnetic rotor assembly 12, and the other end abuts against the water outlet 201.

[0048] It is understandable that the inlet connector 20 is typically a rigid structure. When the insertion section 23 of the inlet connector 20 moves into the flow channel 103 and directly abuts against the magnetic rotor assembly 12, and is pre-tightened by the locking element, the magnetic rotor assembly 12 is easily subjected to rigid compression from the inlet connector 20. This may cause deformation of the mounting bracket of the magnetic rotor assembly 12, resulting in impeller rotation problems and affecting the measurement accuracy of the flow sensor 10. Therefore, a buffer 40 is provided between the magnetic rotor assembly 12 and the inlet connector 20 to absorb the rigid compression impact of the inlet connector 20 and prevent deformation and damage to the magnetic rotor assembly 12.

[0049] Optionally, the limiting part 111 is a stepped surface provided in the flow channel 103, and the stepped surface is disposed facing the magnetic rotor assembly 12.

[0050] It is understood that the flow channel 103 can be configured to include a first flow section and a second flow section. The inner diameter of the first flow section is larger than the inner diameter of the second flow section. A stepped surface can be formed at the connection between the first flow section and the second flow section, so that the magnetic rotor assembly 12 can abut against the stepped surface, thereby limiting the other end of the magnetic rotor assembly 12.

[0051] like Figure 1 As shown, this utility model also proposes a water heater 1000, which includes a water inlet assembly 100, a fan 200, a heat exchange device 400, a burner 500, a water inlet pipe 301, and a water outlet pipe 302. The specific structure of the water inlet assembly 100 is as described in the above embodiments. Since this water heater 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The fan 200, heat exchange device 400 and burner 500 are connected in sequence. The heat exchange device 400 has a water inlet end 202 and a water outlet end 201. The water inlet pipe 301 is connected to the water inlet end 202 and the water outlet pipe 302 is connected to the water outlet end 201. The water inlet assembly 100 can be set in the water inlet pipe 301, specifically on the side of the water inlet pipe 301 away from the water inlet end 202 of the heat exchange device 400. The water inlet connector 20 of the water inlet assembly 100 can be used as a connecting connector for the water inlet pipe 301 to connect to an external water pipe.

[0052] The water heater 1000 can be a gas water heater 1000. When working, the burner 500 burns to form high-temperature flue gas. Under the guidance of the fan 200, the high-temperature flue gas flows through the heat exchange device 400. Water enters the heat exchange pipe of the heat exchange device 400 through the inlet pipe 301 and exchanges heat with the high-temperature flue gas flowing through the heat exchange device 400. After being heated, the flue gas flows out from the outlet pipe 302, enabling the water heater 1000 to provide hot water.

[0053] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A water inlet assembly, characterized in that, include: A flow sensor includes a valve body and a magnetic rotor assembly. The valve body has a flow channel with a water inlet. The magnetic rotor assembly is disposed in the flow channel and a limiting part is provided in the flow channel. The end of the magnetic rotor assembly away from the water inlet abuts against the limiting part. A water inlet connector, having a water outlet end, the water outlet end being inserted into the flow channel from the water inlet interface, for limiting the other end of the magnetic rotor assembly; and A locking structure is used to lock and fix the flow sensor to the water inlet connector.

2. The water inlet assembly as described in claim 1, characterized in that, The locking structure includes a fastener and a threaded component on the valve body. The threaded component has a threaded hole along the extension direction of the flow channel. The water inlet connector has a connecting hole along the extension direction of the flow channel. The connecting hole communicates with the threaded hole. The fastener passes through the connecting hole and the threaded hole and is threadedly connected to the threaded hole.

3. The water inlet assembly as described in claim 2, characterized in that, The valve body has a positioning part located on the periphery of the water inlet interface. The water inlet connector has a positioning mating part located on the outer surface of the water inlet connector. The positioning part and the positioning mating part are positioned and mated to make the connecting hole communicate with the threaded hole.

4. The water inlet assembly as described in claim 3, characterized in that, The connecting hole is formed in the positioning mating part, and the threaded part is provided in the positioning part.

5. The water inlet assembly as described in claim 4, characterized in that, The positioning part has a receiving groove, the threaded part is disposed in the receiving groove, and the positioning part has a mating hole, which connects the threaded hole and the connecting hole.

6. The water inlet assembly as described in claim 2, characterized in that, The threaded component is integrally formed with the valve body.

7. The water inlet assembly as described in claim 1, characterized in that, The water inlet connector includes a body section and an insertion section. The water outlet is the end of the insertion section away from the body section. The insertion section is inserted into the flow channel. The insertion section is fitted with multiple sealing rings, which seal against the inner circumferential wall of the flow channel.

8. The water inlet assembly as described in claim 7, characterized in that, The insertion section has multiple limiting grooves, which are arranged around the outer surface of the insertion section, and the sealing ring is limited and disposed within the limiting grooves.

9. The water inlet assembly as described in any one of claims 1 to 8, characterized in that, The flow sensor also includes a buffer element, which is disposed in the flow channel and located between the magnetic rotor assembly and the water outlet. One end of the buffer element abuts against the magnetic rotor assembly, and the other end abuts against the water outlet. And / or, the limiting part is a stepped surface provided in the flow channel, and the stepped surface is disposed facing the magnetic rotor assembly.

10. A water heater, characterized in that, Includes the water inlet assembly as described in any one of claims 1 to 9.

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