A water flow sensor with thyristor cooling

Abstract

A water flow sensor with thyristor cooling includes a metal body, an impeller, a magnetic rotor, an impeller cavity cover, a top cover, a circuit board, a thyristor and a Hall sensor. The metal body includes a water inlet, an impeller cavity, a rotor cavity, a plurality of heat sinks and a water outlet. A shaft seat is provided on the bottom plate of the impeller cavity, and the impeller cavity and the rotor cavity are connected; a rotating shaft hole is provided on the impeller cavity cover; the impeller and the magnetic rotor are respectively arranged in the impeller cavity and the rotor cavity, the impeller cavity cover is fitted and sealed with the bottom plate of the rotor cavity, the top cover is buckled with the rotor cavity and fixes the impeller cavity cover, one end of the impeller shaft is rotatably matched with the shaft seat, and the other end passes through the rotating shaft hole and is connected to the magnetic rotor; the Hall sensor is arranged on the top cover and matched with the magnetic rotor; the thyristor is fitted and fixed with the heat sink, and the circuit board is fixed with the metal body. A heat sink is provided on the metal body, and the thyristor is fixed with the heat sink, which reduces the temperature rise of the thyristor and prolongs its service life.

Description

Technical Field

[0001] The utility model relates to a water flow sensor. Background Art

[0002] At present, the existing technology, Chinese patent 202121905948.3, a water flow sensor, including a main body, an impeller, an impeller shaft, a magnet, an impeller cavity cover, an outer cover and a Hall sensor, the main body includes a water inlet interface, an impeller cavity and a water outlet interface, and a cavity shaft seat is provided on the bottom plate of the impeller cavity; the impeller cavity cover includes a cover shaft seat and an upper opening Hall sensor cavity, the impeller cavity cover is buckled with the impeller cavity, and the outer cover is buckled with the impeller cavity cover; the impeller shaft and impeller are made of plastic material, and also include a magnet seat, the magnet is pre-embedded in the magnet seat and is evenly distributed in a circular shape; the magnet seat is arranged on the impeller shaft at the upper part of the impeller, and the impeller shaft, impeller and magnet seat are integrally formed; the Hall sensor cavity is opposite to the magnet seat. No thyristor is set, and when used on an electric water heater, it needs to be set separately, and the heat dissipation performance is poor. Utility Model Content

[0003] The utility model aims to provide a water flow sensor with thyristor cooling, which integrates the thyristor and the water flow sensor into one, and effectively reduces the temperature rise of the thyristor.

[0004] The utility model is implemented as follows: a water flow sensor with thyristor cooling is provided, which is special in that it includes a metal body, an impeller, a magnetic rotor, an impeller cavity cover, a top cover, a circuit board, a thyristor and a Hall sensor.

[0005] The metal body includes a water inlet end, an impeller cavity, a rotor cavity and a plurality of heat sinks. A shaft seat is provided on the bottom plate of the impeller cavity, and the impeller cavity and the rotor cavity are connected;

[0006] The impeller chamber cover is provided with a rotating shaft hole;

[0007] The impeller is arranged in the impeller cavity, the impeller cavity cover is fitted and sealed with the bottom plate of the rotor cavity, the top cover is buckled with the rotor cavity and fixes the impeller cavity cover, one end of the impeller shaft is rotatably matched with the shaft seat, and the other end passes through the shaft hole to be connected with the magnetic rotor; the Hall sensor is arranged on the top cover and matches with the magnetic rotor; the thyristor is fitted and fixed with the heat sink, and the circuit board is fixed with the metal body.

[0008] The water flow sensor with thyristor cooling is special in that a fixed column seat is provided on the metal body, and the circuit board is fixed to the fixed column seat.

[0009] The water flow sensor with thyristor cooling is special in that: a countersunk hole is provided on the upper opening of the rotor cavity;

[0010] A ladder pole is provided on the circumferential wall of the top cover;

[0011] Also includes a sealing ring;

[0012] The sealing ring is arranged in the countersunk hole, the top of the upper part of the step matches with the countersunk hole, and the step presses the sealing ring; the lower end presses the impeller cavity cover.

[0013] The water flow sensor with thyristor cooling is special in that: a receiving cavity is provided on the top cover;

[0014] The Hall sensor is pre-buried in a shell and the data line extends out of the shell, and the shell is inserted into the accommodating cavity.

[0015] The water flow sensor with thyristor cooling is special in that a check valve is arranged inside the water outlet end of the metal body.

[0016] The water flow sensor with thyristor cooling is special in that it also includes a temperature sensor;

[0017] The metal body is provided with a sensor hole and a fixing seat;

[0018] The temperature sensor extends into the inner cavity of the metal body through the sensor hole and is fixed to the fixing seat.

[0019] The utility model discloses a water flow sensor with silicon controlled rectifier cooling. A heat sink is arranged on a metal body. The silicon controlled rectifier and the heat sink are fixed, so the temperature rise of the silicon controlled rectifier is reduced and the service life is prolonged. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is the front view of the utility model.

[0021] Figure 2 yes Figure 1 A-A view of.

[0022] Figure 3 yes Figure 2 B-B view.

[0023] Figure 4 It is a stereogram of the utility model.

[0024] Figure 5 It is one of the three-dimensional exploded views of the utility model.

[0025] Figure 6 This is the second three-dimensional exploded view of the present utility model. DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] like Figure 1 As shown, a water flow sensor with thyristor cooling includes a metal body 1, an impeller 2, a magnetic rotor 3, an impeller chamber cover 4, a top cover 5, a circuit board 6, a thyristor 7 and a Hall sensor 8.

[0029] The metal body 1 includes a water inlet end, an impeller cavity 11, a rotor cavity 12, a plurality of heat sinks 13 and a water outlet end. A shaft seat 111 is provided on the bottom plate of the impeller cavity 11, and the impeller cavity 11 and the rotor cavity 12 are connected. Three heat sinks 13 are provided along the length direction of the metal body 1, and one, two, or more than four heat sinks 13 can also be provided.

[0030] The impeller chamber cover 4 is provided with a shaft hole 41 and a guide hole 42 surrounding the shaft hole;

[0031] The impeller 2 is arranged in the impeller cavity 11, and the magnetic rotor 3 is arranged in the rotor cavity 12. The impeller cavity cover 4 is sealed with the bottom plate of the rotor cavity 12. The top cover 5 is buckled with the rotor cavity 12 and fixes the impeller cavity cover 4. One end of the impeller shaft is rotatably matched with the shaft seat 111, and the other end passes through the shaft hole 41 to be connected with the magnetic rotor 3; the Hall sensor 8 is arranged on the top cover 5 and cooperates with the magnetic rotor 3; the thyristor 7 is fixed with the heat sink 13, and the circuit board 6 is fixed to the metal body 1.

[0032] As a further improvement of the present invention: a fixing column seat 14 is provided on the metal body 1 , and the circuit board 6 is fixed to the fixing column seat 14 . The upper end of the fixing column seat 14 is connected to the heat sink 13 .

[0033] As a further improvement of the present utility model: a countersunk hole 121 is provided on the upper opening of the rotor chamber 12;

[0034] A ladder pole 51 is provided on the circumferential wall of the top cover 5;

[0035] Also includes a sealing ring 9;

[0036] The sealing ring 9 is arranged in the countersunk hole 121 , the top cover 5 on the upper part of the step 51 cooperates with the countersunk hole 121 , and the step 51 presses the sealing ring 9 ; the lower end presses the impeller chamber cover 4 .

[0037] As a further improvement of the present utility model: the top cover 5 is provided with a receiving cavity 52;

[0038] The Hall sensor 8 is pre-buried in a housing 10 and the data line extends out of the housing 10 . The housing is inserted into the accommodating cavity 52 and fixed.

[0039] A check valve 17 is provided in the water outlet end of the metal body 1 .

[0040] As a further improvement of the utility model: further comprising a temperature sensor 16;

[0041] The water inlet end of the metal body 1 is provided with a sensor hole 15 and a fixing seat 151;

[0042] The temperature sensor 16 extends into the inner cavity of the metal body 1 through the sensor hole 15 and is fixed to the fixing seat 151 .

[0043] 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 sensor with thyristor cooling, characterized in that: Including metal body, impeller, magnetic rotor, impeller cavity cover, top cover, circuit board, thyristor and Hall sensor, The metal body includes a water inlet end, an impeller cavity, a rotor cavity, a plurality of heat sinks and a water outlet end. A shaft seat is provided on the bottom plate of the impeller cavity, and the impeller cavity and the rotor cavity are connected; The impeller chamber cover is provided with a rotating shaft hole; The impeller and the magnetic rotor are respectively arranged in the impeller cavity and the rotor cavity, the impeller cavity cover is fitted and sealed with the bottom plate of the rotor cavity, the top cover is buckled with the rotor cavity and fixes the impeller cavity cover, one end of the impeller shaft is rotatably matched with the shaft seat, and the other end passes through the shaft hole to be connected with the magnetic rotor; the Hall sensor is arranged on the top cover and cooperates with the magnetic rotor; the thyristor is fitted and fixed with the heat sink, and the circuit board is fixed with the metal body.

2. A water flow sensor with thyristor cooling according to claim 1, characterized in that: A fixed column seat is arranged on the metal main body, and the circuit board is fixed to the fixed column seat.

3. A water flow sensor with thyristor cooling according to claim 1, characterized in that: A countersunk hole is provided on the upper opening of the rotor chamber; A ladder pole is provided on the circumferential wall of the top cover; Also includes a sealing ring; The sealing ring is arranged in the countersunk hole, the top of the upper part of the step matches with the countersunk hole, and the step presses the sealing ring; the lower end presses the impeller cavity cover.

4. A water flow sensor with thyristor cooling according to claim 1, characterized in that: The top cover is provided with a containing cavity; The Hall sensor is pre-buried in a shell and the data line extends out of the shell, and the shell is inserted into the accommodating cavity.

5. The water flow sensor with thyristor cooling according to claim 1, characterized in that: A check valve is arranged inside the water outlet end of the metal body.

6. A water flow sensor with thyristor cooling according to claim 1, 2, 3, 4 or 5, characterized in that: Also includes a temperature sensor; The metal body is provided with a sensor hole and a fixing seat; The temperature sensor extends into the inner cavity of the metal body through the sensor hole and is fixed to the fixing seat.

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