Water inlet pipe with water flow sensor and electric water heater

Abstract

The utility model provides a water inlet pipe with a water flow sensor, which comprises an electricity-proof wall main body and an inner pipe, the electricity-proof wall main body and the inner pipe are respectively provided with a water flow channel, a containing cavity is arranged in the water flow channel of the electricity-proof wall main body, the inner pipe is arranged in the containing cavity, and the inner pipe and the water flow channel of the electricity-proof wall main body form a roundabout waterway. A Hall sensor is arranged on the outer side of the electricity-proof wall body, a magnetic rotor guide cylinder is arranged in the electricity-proof wall body, the magnetic rotor guide cylinder corresponds to the Hall sensor in position, the magnetic rotor guide cylinder is arranged close to the input end of the electricity-proof wall body, and a gap is formed between the magnetic rotor guide cylinder and the outer wall of the containing cavity. The magnetic rotor guide cylinder is arranged to be matched with the Hall sensor to detect the flow rate of water flow, the flow rate of the water flow cannot be reduced while the flow rate of the water flow is detected through the matching between the magnetic rotor guide cylinder and the containing cavity, and the reliability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of components of electric water heaters, and particularly relates to a water inlet pipe with a water flow sensor and an electric water heater. Background Art

[0002] The anti-electricity wall water inlet pipe is used on an electric water heater. The existing anti-electricity wall water inlet pipe is provided with a tortuous water path. By setting the tortuous water path, the volume of the anti-electricity wall water inlet pipe is reduced. For example, the patent document with the Chinese application number 202322040138.1 and the publication date of February 6, 2024 discloses a small-volume external anti-electricity wall assembly and an electric water heater, including a main body, an inner pipe, an external thread insert and an internal thread insert. Both the main body and the inner pipe have water flow channels. The inner pipe is installed in the water flow channel of the main body to form a three-section tortuous water path therewith. It forms a three-section tortuous water path through the cooperation of the body and the inner pipe, reducing the volume of the anti-electricity wall water inlet pipe. This anti-electricity wall water inlet pipe cannot detect the water flow rate. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a water inlet pipe with a water flow sensor and an electric water heater, which are provided with a magnetic rotor guide cylinder and a Hall sensor to cooperate to detect the water flow rate. Through the cooperation between the magnetic rotor guide cylinder and the receiving cavity, while realizing the detection of the water flow rate, the water flow rate will not be reduced, and the reliability is good.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A water inlet pipe with a water flow sensor according to the utility model includes an anti-electricity wall main body and an inner pipe. Both the anti-electricity wall main body and the inner pipe have water flow channels. A receiving cavity is provided in the water flow channel of the anti-electricity wall main body. The inner pipe is installed in the receiving cavity and forms a tortuous water path with the water flow channel of the anti-electricity wall main body. A Hall sensor is provided outside the anti-electricity wall main body, and a magnetic rotor guide cylinder is provided inside the anti-electricity wall main body. The magnetic rotor guide cylinder corresponds to the position of the Hall sensor. The magnetic rotor guide cylinder is arranged near the input end of the anti-electricity wall main body and has a gap with the outer wall of the receiving cavity.

[0006] Preferably, a positioning structure is provided on the inner wall of the anti-electricity wall main body. The magnetic rotor guide cylinder is detachably arranged on the positioning structure. The positioning structure is used to limit the magnetic rotor guide cylinder along the length direction of the anti-electricity wall main body.

[0007] Preferably, the positioning structure includes a resisting part, and the resisting part is arranged near the receiving cavity; one end of the magnetic rotor guide cylinder abuts against the resisting part, and the resisting part restricts the magnetic rotor guide cylinder from approaching the receiving cavity.

[0008] Preferably, the positioning structure further includes a snap ring disposed near the input end of the anti-electricity wall main body; the other end of the magnetic rotor guide cylinder abuts against the snap ring, and the snap ring restricts the magnetic rotor guide cylinder from disengaging from the anti-electricity wall main body.

[0009] Preferably, an installation groove is recessed inwardly on the outer wall of the anti-electricity wall main body, and the Hall sensor is disposed in the installation groove.

[0010] Preferably, a filter screen is disposed between the input end of the anti-electricity wall main body and the magnetic rotor guide cylinder.

[0011] Preferably, an output pipe body is disposed outside the anti-electricity wall main body, the output pipe body is communicated with the circuitous water channel, and a plurality of water outlet holes are disposed on the side wall of the output pipe body.

[0012] Preferably, an external thread insert is disposed at one end of the anti-electricity wall main body, and an internal thread insert is disposed at the other end of the anti-electricity wall main body.

[0013] The present utility model further provides a gas water heater, including an inlet pipe with a water flow sensor as described in any one of claims 1 to 8.

[0014] The beneficial effects of the inlet pipe with a water flow sensor according to the present utility model relative to the prior art are mainly reflected in:

[0015] By arranging the magnetic rotor guide cylinder and the Hall sensor to cooperate to detect the flow rate of the water flow, the flow rate of the incoming water can be obtained; at the same time, a gap is provided between the magnetic rotor guide cylinder and the outer wall of the receiving cavity, so that the receiving cavity will not block the water flow output by the magnetic rotor guide cylinder, thus ensuring the flow rate frequency of the magnetic rotor guide cylinder and not affecting the water flow rate output by the magnetic rotor guide cylinder; through the cooperation between the magnetic rotor guide cylinder and the receiving cavity, while detecting the water flow rate, the water flow rate is not reduced, and the reliability is good.

[0016] By arranging the positioning structure to fix the magnetic rotor guide cylinder, the magnetic rotor guide cylinder is detachably disposed on the anti-electricity wall main body, which is convenient for disassembly and assembly; at the same time, the positioning structure restricts the movement of the magnetic rotor guide cylinder along the length direction of the anti-electricity wall main body, so that when the water flow passes through the magnetic rotor guide cylinder, the magnetic rotor guide cylinder will not approach the receiving cavity, ensuring that the gap between the magnetic rotor guide cylinder and the receiving cavity will not be closed; at the same time, it can prevent the magnetic rotor guide cylinder from disengaging from the anti-electricity wall main body under the action of gravity.

[0017] By the abutting portion and the snap ring respectively abutting against the magnetic rotor guide cylinder, the limit of the magnetic rotor guide cylinder is realized, and the structure is simple.

[0018] By arranging a recessed installation groove on the anti-electricity wall main body for installing the Hall sensor, the distance between the Hall sensor and the magnetic rotor guide cylinder can be shortened, and the reliability of the signal transmission between the Hall sensor and the magnetic rotor guide cylinder is good.

[0019] By providing a filter screen inside the electric shock prevention wall body, impurities in the water flow are filtered through the filter screen, which can prevent impurities from entering the electric water heater and improve the water use experience.

[0020] By providing an output pipe body, the water flow output from the circuitous water path is output through a plurality of water outlet holes, or the water outlet pressure of the output pipe body is reduced.

[0021] By providing an external thread insert and an internal thread insert, the connection between the electric shock prevention wall body and other components is realized.

[0022] In the present utility model, a magnetic rotor guide cylinder is provided to cooperate with a Hall sensor to detect the water flow rate. Through the cooperation between the magnetic rotor guide cylinder and the receiving cavity, while detecting the water flow rate, the water flow rate will not be reduced, and the reliability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and other objects, features and advantages of the present utility model will become clearer through the preferred embodiments of the present utility model shown in the drawings. The same reference numerals in all the drawings indicate the same parts, and the drawings are not deliberately drawn to scale in actual size, with the emphasis on showing the gist of the present utility model.

[0024] Figure 1 It is a schematic diagram of the water inlet pipe with a water flow sensor in the present utility model.

[0025] Figure 2 is Figure 1 a cross-sectional view.

[0026] Figure 3 is Figure 2 an enlarged view of A in

[0027] Figure 4 is Figure 2 an enlarged view of B in

[0028] Figure 5 It is a front view of the electric shock prevention wall body in the present utility model.

[0029] Figure 6 is Figure 5 a cross-sectional view taken along C-C in

[0030] Figure 7 It is an exploded view of the water inlet pipe with a water flow sensor in the present utility model.

[0031] Figure 8 It is a schematic diagram of the circuitous water path in the present utility model.

[0032] Figure 9 It is a schematic diagram of the electric water heater in the present utility model. Brief Description of the Drawings:

[0034] Electric shock prevention wall main body 1, water flow channel 11 of the electric shock prevention wall main body, accommodation cavity 12, first step portion 13, installation groove 14, external thread insert 15, internal thread insert 16.

[0035] Inner pipe 2, water flow channel 21 of the inner pipe, second step portion 22.

[0036] Hall sensor 3,

[0037] Magnetic rotor guide cylinder 4,

[0038] Gap 5.

[0039] Blocking portion 6

[0040] Output pipe body 7, water outlet hole 71, plug 72.

[0041] Filter screen 8.

[0042] Second gap 9.

[0043] Electric water heater main body 100.

[0044] Outlet pipe 200.

[0045] Inlet pipe 300 with a water flow sensor. Detailed Implementation Manner

[0046] The technical solution of the present utility model will be further described in detail below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and be able to implement it. However, the embodiments cited do not limit the present utility model. In this embodiment, it should be understood that the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.

[0047] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element and integrated with it, or there may be an intermediate element at the same time. The terms "installation", "one end", "the other end" and similar expressions used in the present utility model are only for the purpose of illustration.

[0048] Embodiment 1

[0049] This embodiment provides an inlet pipe with a water flow sensor, as Figure 1-8As shown in the figure; it includes an anti-electricity wall main body 1 and an inner pipe 2. Both the anti-electricity wall main body 1 and the inner pipe 2 have water flow channels. In the water flow channel 11 of the anti-electricity wall main body, there is a receiving cavity 12. The inner pipe 2 is installed in the receiving cavity 12. The water flow channel 21 of the inner pipe and the water flow channel 11 of the anti-electricity wall main body form a circuitous waterway. A Hall sensor 3 is provided on the outer side of the anti-electricity wall main body 1. A magnetic rotor guide cylinder 4 is provided inside the anti-electricity wall main body 1. The magnetic rotor guide cylinder 4 corresponds to the position of the Hall sensor 3. The magnetic rotor guide cylinder 4 is arranged near the input end of the anti-electricity wall main body 1 and has a gap 5 with the outer wall of the receiving cavity 12.

[0050] By setting the magnetic rotor guide cylinder 4 to cooperate with the Hall sensor 3 to detect the water flow rate. When water flows through the magnetic rotor guide cylinder 4, the magnetic rotor inside the magnetic rotor guide cylinder 4 rotates to generate a magnetic signal, and the Hall sensor 3 senses the magnetic signal to detect the water flow rate; thus, the water flow rate of the incoming water can be obtained. At the same time, a gap 5 is provided between the magnetic rotor guide cylinder 4 and the outer wall of the receiving cavity 12, so that the receiving cavity 12 will not block the water flow output by the magnetic rotor guide cylinder 4. This ensures the flow frequency of the magnetic rotor guide cylinder 4 and does not affect the water flow rate output by the magnetic rotor guide cylinder 4; through the cooperation between the magnetic rotor guide cylinder 4 and the receiving cavity 12, while detecting the water flow rate, the water flow rate will not be reduced, and the reliability is good.

[0051] A positioning structure is provided on the inner wall of the anti-electricity wall main body 1. The magnetic rotor guide cylinder 4 is detachably arranged on the positioning structure. The positioning structure is used to limit the magnetic rotor guide cylinder 4 along the length direction of the anti-electricity wall main body 1. By setting the positioning structure to fix the magnetic rotor guide cylinder 4, the magnetic rotor guide cylinder 4 can be detachably arranged on the anti-electricity wall main body 1, which is convenient for disassembly and assembly; at the same time, the positioning structure restricts the movement of the magnetic rotor guide cylinder 4 along the length direction of the anti-electricity wall main body 1, so that when water flows through the magnetic rotor guide cylinder 4, the magnetic rotor guide cylinder 4 will not approach the receiving cavity 12, ensuring that the gap 5 between the magnetic rotor guide cylinder 4 and the receiving cavity 12 will not be closed; at the same time, it can prevent the magnetic rotor guide cylinder 4 from disengaging from the anti-electricity wall main body 1 under the action of gravity.

[0052] The positioning structure includes a resisting part 6 and a snap ring (not shown in the figure). The resisting part 6 is arranged close to the receiving cavity 12; the snap ring is arranged close to the input end of the anti-electricity wall main body 1; one end of the magnetic rotor guide cylinder 4 abuts against the resisting part 6, and the resisting part 6 restricts the magnetic rotor guide cylinder 4 from approaching the receiving cavity 12. The other end of the magnetic rotor guide cylinder 4 abuts against the snap ring, and the snap ring restricts the magnetic rotor guide cylinder 4 from disengaging from the anti-electricity wall main body 1. By the resisting part 6 and the snap ring respectively abutting against the magnetic rotor guide cylinder 4, the limitation of the magnetic rotor guide cylinder 4 is realized, and the structure is simple in this way. In this embodiment, the resisting part 6 is formed by protruding inward from the inner wall of the anti-electricity wall main body 1; the snap ring is a hole snap ring.

[0053] In a preferred embodiment, a first stepped portion 13 is provided at the output end of the electric shock prevention wall body 1, and a second stepped portion 22 is provided at one end of the inner pipe 2; the second stepped portion 22 is lapped on the first stepped portion 13; the installation of the inner pipe 2 is realized by supporting the second stepped portion 22 with the first stepped portion 13, and a second gap 9 is provided between the input end of the inner pipe 2 and the bottom of the receiving cavity 12. Water flows into the receiving cavity 12 through the water flow channel 11 of the electric shock prevention wall body and then into the water flow channel 21 of the inner pipe.

[0054] An output pipe body 7 is further provided outside the electric shock prevention wall body 1. The output pipe body 7 is communicated with the tortuous water path. A plurality of water outlet holes 71 are provided on the side wall of the output pipe body 7. A plug 72 is provided at one end of the output pipe body 7 away from the tortuous water path. The output pipe body 7 is used to input the water flow output from the tortuous water path into the electric water heater. The water flow output from the tortuous water path is output through a plurality of water outlet holes 71, or the water outlet pressure of the output pipe body 7 is reduced.

[0055] In a preferred embodiment, an installation groove 14 is recessed inwardly on the outer wall of the electric shock prevention wall body 1, and the Hall sensor 3 is arranged in the installation groove 14. The recessed installation groove 14 is used to install the Hall sensor 3, which can shorten the distance between the Hall sensor 3 and the magnetic rotor guide cylinder 4, and the reliability of signal transmission between the Hall sensor 3 and the magnetic rotor guide cylinder 4 is good.

[0056] In a preferred embodiment, a filter screen 8 is provided between the input end of the electric shock prevention wall body 1 and the magnetic rotor guide cylinder 4. The impurities in the water flow are filtered through the filter screen 8, which can avoid impurities from entering the electric water heater and improve the use experience of the water body.

[0057] In a preferred embodiment, an external thread insert 15 is provided at one end of the electric shock prevention wall body 1, and an internal thread insert 16 is provided at the other end of the electric shock prevention wall body 1. By providing the external thread insert 15 and the internal thread insert 16, the connection between the electric shock prevention wall body 1 and other components is realized.

[0058] Embodiment 2

[0059] An electric water heater, as Figure 9 shown, includes an electric water heater body 100, an upper water outlet pipe 200 provided on the electric water heater body 100, and a water inlet pipe 300 with a water flow sensor. The water outlet pipe 200 and the water inlet pipe 300 with a water flow sensor are both connected to the inner tank (not shown in the figure) of the electric water heater body 100; the water inlet pipe 300 with a water flow sensor has the same structure as that in Embodiment 1, and the water outlet pipe 200 is a prior art and will not be described in detail here.

[0060] In this specification, unless otherwise clearly defined or limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact via an intermediate medium. Also, a first feature being "above", "over" and "on top of" a second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. A first feature being "under", "below" and "beneath" a second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0061] In the description of this specification, the description of reference terms such as "preferred embodiment", "another embodiment", "other embodiments" or "specific examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0062] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A water inlet pipe with a water flow sensor, comprising an anti-electricity wall body and an inner pipe, both of which have a water flow channel, characterized in that: A receiving cavity is provided in the water flow channel of the anti-electricity wall body, an inner tube is installed in the receiving cavity and forms a circuitous water channel with the water flow channel of the anti-electricity wall body, a Hall sensor is provided on the outside of the anti-electricity wall body, a magnetic rotor guide tube is provided inside the anti-electricity wall body, the magnetic rotor guide tube corresponds to the position of the Hall sensor, the magnetic rotor guide tube is arranged close to the input end of the anti-electricity wall body and a gap is provided with the outer wall of the receiving cavity.

2. The water inlet pipe with a water flow sensor according to claim 1, characterized in that: A positioning structure is provided on the inner wall of the anti-electricity wall body, and the magnetic rotor guide tube is detachably arranged on the positioning structure. The positioning structure is used to limit the magnetic rotor guide tube along the length direction of the anti-electricity wall body.

3. The water inlet pipe with a water flow sensor according to claim 2, characterized in that: The positioning structure comprises a resisting portion, which is arranged close to the receiving cavity; one end of the magnetic rotor guide tube abuts against the resisting portion, and the resisting portion restricts the magnetic rotor guide tube from approaching the receiving cavity.

4. The water inlet pipe with a water flow sensor according to claim 3, characterized in that: The positioning structure also includes a retaining spring, which is arranged close to the input end of the anti-electricity wall body; the other end of the magnetic rotor guide tube abuts against the retaining spring, and the retaining spring restricts the magnetic rotor guide tube from escaping from the anti-electricity wall body.

5. The water inlet pipe with a water flow sensor according to claim 1, characterized in that: An installation groove is recessed inwardly on the outer wall of the anti-electricity wall body, and the Hall sensor is arranged in the installation groove.

6. The water inlet pipe with a water flow sensor according to claim 1, characterized in that: A filter screen is arranged between the input end of the anti-electricity wall body and the magnetic rotor guide cylinder.

7. The water inlet pipe with a water flow sensor according to claim 1, characterized in that: An output pipe body is arranged outside the main body of the anti-electricity wall. The output pipe body is communicated with the circuitous water channel. A plurality of water outlet holes are arranged on the side wall of the output pipe body.

8. The water inlet pipe with a water flow sensor according to claim 1, characterized in that: An external thread insert is arranged at one end of the anti-electricity wall main body, and an internal thread insert is arranged at the other end of the anti-electricity wall main body.

9. An electric water heater, characterized in that: It comprises a water inlet pipe with a water flow sensor as claimed in any one of claims 1 to 8.

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