Water flow switch

Abstract

A water flow switch comprises a main body part, a head part, an impeller, a shaft body, a rotor, a magnet, a circuit board and a Hall sensor, and the main body part comprises a water inlet cavity, an impeller cavity located in the water inlet cavity, a spiral water inlet hole formed in the wall of the impeller cavity and an external connector. A lower shaft hole is formed in a bottom plate of the impeller cavity; the head part comprises a water outlet cavity, a rotor cavity, a packaging cavity, a Hall cavity, an external thread part and a flange part, a radial water outlet hole is formed in the water outlet cavity, and an upper shaft hole is formed in the top of the rotor cavity; the magnet is pre-embedded in the rotor, the shaft body is connected with a shaft seat of the impeller, and the rotor is arranged at one end of the shaft seat; the shaft body is in running fit with the upper shaft hole and the lower shaft hole, and the impeller is located in the impeller cavity; the rotor is positioned in the rotor cavity; the circuit board is arranged in the packaging cavity, and the Hall sensor is arranged in the Hall cavity and corresponds to the magnet. The water inlet direction of the body is perpendicular to the water outlet direction of the head, and the device is installed in the scene where the water direction needs to be changed.

Description

Technical Field

[0001] The utility model relates to a water flow switch used on a hot water device. Background Art

[0002] The current existing technology, Chinese patent 201520707266.X, a water flow sensor, includes a shell with upper and lower openings, a magnetic rotor, a magnetic rotor bracket, a Hall sensor and a rectifier, the magnetic rotor bracket is arranged in the shell, the Hall sensor is arranged on the shell, the magnetic rotor is arranged on the magnetic rotor bracket, the rectifier is arranged at the bottom of the shell, and the lower end of the magnetic rotor bracket cooperates with the rectifier; the rectifier includes a cylindrical seat and a top plate, and there are several flow-stabilizing holes evenly distributed on the top plate. The problem is: it is connected in series in a straight line pipeline, and the water inlet and outlet are in a straight line. Utility Model Content

[0003] The utility model aims to provide a water flow switch, which has the characteristics that the water inlet and water outlet directions are vertical.

[0004] The utility model is implemented as follows: a water flow switch, which is special in that it includes a main body, a head, an impeller, a shaft, a rotor, a magnet, a circuit board and a Hall sensor.

[0005] The main body includes a water inlet cavity, an impeller cavity located in the water inlet cavity, a spiral water inlet hole arranged on the wall of the impeller cavity, and an external interface. A lower shaft hole is arranged on the bottom plate of the impeller cavity;

[0006] The head comprises a water outlet cavity, a rotor cavity, a packaging cavity, a Hall cavity, an external threaded portion and a flange portion. The water outlet cavity is provided with a radial water outlet hole, and the top of the rotor cavity is provided with an upper shaft hole.

[0007] The magnet is embedded in the rotor, the shaft body and the impeller shaft seat, and the rotor is arranged at one end of the shaft seat; the external interface is inserted into the water inlet cavity and sealed, the shaft body is rotatably matched with the upper shaft hole and the lower shaft hole, and the impeller is located in the impeller cavity; the rotor is located in the rotor cavity; the circuit board is arranged in a packaging cavity, and the Hall sensor is arranged in the Hall cavity and corresponds to the magnet.

[0008] The water flow switch is special in that: a countersunk hole is provided at the opening end of the water inlet cavity;

[0009] It also includes a water filter screen plate; the water filter screen plate is arranged in the sink hole.

[0010] The water flow switch is special in that: the impeller and the rotor are made of plastic material in one piece;

[0011] The shaft body is pre-buried in the shaft seat.

[0012] The water flow switch is special in that the shaft seat of the blade shaft wraps around the part where the shaft body and the upper shaft hole are rotatably matched.

[0013] The water flow switch is special in that the outer peripheral surface of the packaging cavity is in the shape of a regular hexagon.

[0014] The water flow switch is special in that an axial water guide cavity is provided between the impeller cavity and the water inlet cavity, and the spiral water inlet hole is connected with the axial water guide cavity.

[0015] The water flow switch is special in that it also includes a temperature sensor.

[0016] The head is provided with a sensing cavity, which is connected with the packaging cavity and the water outlet cavity;

[0017] The temperature sensor is arranged in the sensing cavity and extends into the water outlet cavity.

[0018] The utility model discloses a water flow switch, wherein the water inlet direction of the main body is perpendicular to the water outlet direction of the head, and is installed in a scene where the water direction needs to be changed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the utility model.

[0020] Figure 2 yes Figure 1 A-A view of.

[0021] Figure 3 It is one of the three-dimensional exploded views of the utility model.

[0022] Figure 4 This is the second three-dimensional exploded view of the present utility model.

[0023] Figure 5 It is a stereogram of the utility model. DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figure 1 , Figure 3 , Figure 4 As shown, a water flow switch includes a main body 1, a head 2, an impeller 3, a shaft 4, a rotor 5, a magnet 6, a circuit board 7 and a Hall sensor 8.

[0027] The main body 1 includes a water inlet chamber 11, an impeller chamber 12 located in the water inlet chamber 11, a spiral water inlet hole 13 provided on the wall of the impeller chamber 12, and an external interface 14. A lower shaft hole is provided on the bottom plate of the impeller chamber 12;

[0028] The head 2 includes a water outlet cavity 21, a rotor cavity 22, a packaging cavity 23, a Hall cavity 24, an external threaded portion 25 and a flange portion 26. The water outlet cavity 21 is provided with a radial water outlet hole 211, and the top of the rotor cavity 22 is provided with an upper shaft hole.

[0029] The magnet 6 is embedded in the rotor 5, the shaft body 4 and the shaft seat 31 of the impeller 3, and the rotor 5 is arranged at one end of the shaft seat 31; the external interface 14 is inserted into the water inlet cavity 11 and sealed, the shaft body 4 is rotatably matched with the upper shaft hole and the lower shaft hole, and the impeller 3 is located in the impeller cavity 12; the rotor 5 is located in the rotor cavity 22; the circuit board 7 is arranged in the packaging cavity 23, and the Hall sensor 8 is arranged in the Hall cavity 24 and corresponds to the magnet 6.

[0030] As a further improvement of the utility model: an axial water guide cavity 15 is provided between the impeller cavity 12 and the water inlet cavity 11, and the spiral water inlet hole 13 is connected to the axial water guide cavity 15;

[0031] The spiral water inlet hole 13 is left-handed and is located at the end of the axial water guide cavity 15 in the clockwise direction.

[0032] As a further improvement of the utility model: the opening end of the water inlet chamber 11 is provided with a countersunk hole 11;

[0033] It also includes a water filter screen plate 10; the water filter screen plate 10 is arranged in the sink hole 111;

[0034] The bottom plate of the impeller chamber 12 is provided with a support column 121, and the support column 12 is provided with a pin column 1211;

[0035] The water filter screen plate 10 is provided with a pin hole 101, and the pin column 1211 is inserted into the pin hole 101, and the support column supports the water filter screen plate 10. With such a design, the water filter screen plate can be prevented from being deformed.

[0036] As a further improvement of the present utility model: the impeller 3 and the rotor 5 are made of plastic material in one piece;

[0037] The shaft body 4 is pre-buried on the shaft seat 31; the shaft seat 31 of the impeller 3 wraps the part where the shaft body 4 rotates with the upper shaft hole.

[0038] The outer peripheral surface of the packaging cavity 23 is in the shape of a regular hexagon, so as to allow the rotating tool to rotate its head.

[0039] As a further improvement of the utility model: it also includes a temperature sensor 16,

[0040] The head 2 is provided with a sensing cavity, which is connected to the packaging cavity 23 and the water outlet cavity 21;

[0041] The temperature sensor 16 is disposed in the sensing cavity and extends into the water outlet cavity 21, and is used to sense the water temperature and transmit it to the circuit board.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A water flow switch, characterized in that: It includes a main body, a head, an impeller, a shaft, a rotor, a magnet, a circuit board and a Hall sensor. The main body includes a water inlet cavity, an impeller cavity located in the water inlet cavity, a spiral water inlet hole arranged on the wall of the impeller cavity, and an external interface; a lower shaft hole is arranged on the bottom plate of the impeller cavity; The head comprises a water outlet cavity, a rotor cavity, a packaging cavity, a Hall cavity, an external threaded portion and a flange portion. The water outlet cavity is provided with a radial water outlet hole, and the top of the rotor cavity is provided with an upper shaft hole. The magnet is embedded in the rotor, the shaft body and the impeller shaft seat, and the rotor is arranged at one end of the shaft seat; the external interface is inserted into the water inlet cavity and sealed, the shaft body is rotatably matched with the upper shaft hole and the lower shaft hole, the impeller is located in the impeller cavity; the rotor is located in the rotor cavity; The circuit board is arranged in the packaging cavity, and the Hall sensor is arranged in the Hall cavity and corresponds to the magnet.

2. A water flow switch according to claim 1, characterized in that: The opening end of the water inlet cavity is provided with a sink hole; It also includes a water filter screen plate; the water filter screen plate is arranged in the sink hole.

3. A water flow switch according to claim 1, characterized in that: The impeller and the rotor are made of plastic material in one piece; The shaft body is pre-buried in the shaft seat.

4. A water flow switch according to claim 3, characterized in that: The shaft seat of the impeller wraps the portion where the shaft body and the upper shaft hole are rotatably matched.

5. A water flow switch according to claim 1, characterized in that: The outer circumferential surface of the packaging cavity is in the shape of a regular hexagon.

6. A water flow switch according to claim 1, characterized in that: An axial water guide cavity is provided between the impeller cavity and the water inlet cavity, and the spiral water inlet hole is communicated with the axial water guide cavity.

7. A water flow switch according to claim 1, 2, 3, 4, 5 or 6, characterized in that: Also includes temperature sensor, The head is provided with a sensing cavity, which is connected with the packaging cavity and the water outlet cavity; The temperature sensor is arranged in the sensing cavity and extends into the water outlet cavity.

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