CN219457454U

CN219457454U - Water flow switch

Info

Publication number: CN219457454U
Application number: CN202320416135.0U
Authority: CN
Inventors: 王平
Original assignee: Foshan Shunde Saier Sensor Co ltd
Current assignee: Foshan Shunde Saier Sensor Co ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-08-01
Anticipated expiration: 2033-03-07

Abstract

The utility model discloses a water flow switch, comprising: the switch comprises a switch body, wherein a fluid cavity for liquid to flow through is formed in the switch body, a mounting cavity is formed in one side of the switch body, and an optical signal transmitting module and an optical signal receiving module are arranged in the mounting cavity; the optical adjusting piece is arranged in the fluid cavity, the optical adjusting piece can adjust the optical signal sent by the optical signal transmitting module, when the fluid cavity is in a liquid-free state, the optical adjusting piece can adjust the optical signal sent by the optical signal transmitting module, so that the optical signal receiving module receives the optical signal to generate a first signal, when the fluid cavity is filled with liquid, the optical adjusting piece can be matched with the liquid in the fluid cavity to adjust the optical signal sent by the optical signal transmitting module, and the optical signal receiving module is prevented from receiving the optical signal, so that a second signal is generated. The intelligent water household appliance detection device is simple in structure, small in size and accurate in detection, and can meet the requirements of increasing intelligent and accurate water household appliances.

Description

Water flow switch

Technical Field

The utility model belongs to the technical field of water treatment switches, and particularly relates to a water flow switch.

Background

The water flow switch is a commonly used sensing device in water home appliances, and is suitable for water inlet and outlet control, water heating control, water circulation control, electromagnetic valve on-off control, water pump on-off control or water outlet power-off, water outlet power-on and other control processes in the water home appliances. The existing water flow switch mainly comprises a piston type, a gravity type, a magnetic type, a baffle type and other types, but the water flow switch of the types is complex in structure, large in size and easy to produce errors, and cannot meet the requirements of increasing intellectualization and precision of water home appliances.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the water flow switch which has the advantages of simple structure, small volume and accurate detection, and can meet the requirements of more and more intellectualization and precision of water home appliances.

A water flow switch according to an embodiment of the present utility model includes: the switch comprises a switch body, wherein a fluid cavity for liquid to flow through is formed in the switch body, an installation cavity is formed in one side of the switch body, and an optical signal transmitting module and an optical signal receiving module are arranged in the installation cavity; the optical adjusting piece is arranged in the fluid cavity, the optical adjusting piece can adjust the optical signal sent by the optical signal transmitting module, when the fluid cavity is in a liquid-free state, the optical adjusting piece can adjust the optical signal sent by the optical signal transmitting module, so that the optical signal receiving module receives the optical signal to generate a first signal, and when the fluid cavity is filled with liquid, the optical adjusting piece can be matched with the liquid in the fluid cavity to adjust the optical signal sent by the optical signal transmitting module, and the optical signal receiving module is prevented from receiving the optical signal, so that a second signal is generated.

According to the water flow switch provided by the embodiment of the utility model, the water flow switch has at least the following technical effects: this water flow switch, compare traditional water flow switch through photoelectric type response output monitoring signal, small and detect accurately, while simple structure, be convenient for production and equipment, when specifically using in water household electrical appliances simultaneously, generally cooperate the water pump to use, when drawing water, begin to be full of liquid and export the second signal in the fluid chamber, after drawing no water, be in no liquid state in the fluid chamber, then can export first signal, suggestion water tank no water (water has been taken out), thereby cooperate external circuit to realize opening and stopping control to the water pump, and then can satisfy the more and more intelligent and accurate requirement of water household electrical appliances.

According to some embodiments of the present utility model, the light adjuster is a transparent trapezoid boss, two oblique sides of the trapezoid boss are located in the fluid cavity, when the fluid cavity is in a liquid-free state, the light signals sent by the light signal transmitting module can be injected into the trapezoid boss and sequentially reflected by the two oblique sides of the trapezoid boss, and then injected into the light signal receiving module; when the fluid cavity is filled with liquid, the optical signal emitted by the optical signal emitting module can be emitted into the trapezoid boss and refracted from one bevel edge of the trapezoid boss into the liquid in the fluid cavity, so that the optical signal is prevented from being received by the optical signal receiving module. When the fluid cavity is in a liquid-free state, two oblique sides of the trapezoid boss are in air, an optical signal sent by the optical signal transmitting module is injected into the trapezoid boss and sequentially reflected at the two oblique sides of the trapezoid boss, when the fluid cavity is filled with liquid, the two oblique sides of the trapezoid boss are in liquid, and the optical signal sent by the optical signal transmitting module is injected into the trapezoid boss and refracted from one oblique side of the trapezoid boss into the liquid of the fluid cavity.

According to some embodiments of the utility model, the mounting cavity is arranged on an outer side wall of one side of the switch body, the trapezoid boss is arranged on an inner side wall of the same side of the switch body, and the switch body is made of transparent materials. The switch body is made of transparent materials, so that the optical signals sent by the optical signal transmitting module in the installation cavity can be ensured to be emitted into the trapezoid boss, and when the fluid cavity is in a liquid-free state, the optical signals sent by the optical signal transmitting module can be received by the optical signal receiving module in the installation cavity.

According to some embodiments of the utility model, the optical signal transmitting module is an infrared transmitting lamp, and the optical signal receiving module is an infrared photosensitive receiving lamp.

According to some embodiments of the utility model, a light shield is detachably arranged on the switch body, and the light shield shields the mounting cavity and the trapezoid boss. The arrangement of the light shield can prevent the external light from interfering, so that the monitoring accuracy is further ensured.

According to some embodiments of the utility model, an opening is formed on one side of the light shield, and the light shield is elastically clamped on the switch body through the opening. The light shield is convenient to detach and install.

According to some embodiments of the utility model, the switch body comprises a water inlet port and a water outlet port, and a backflow prevention valve is arranged on the water outlet port. The backflow prevention valve can prevent liquid in the water flow switch from flowing back, and the accuracy of monitoring the water flow switch is guaranteed.

According to some embodiments of the utility model, the backflow prevention valve comprises a piston, a spring and a fixing seat, wherein the piston and the fixing seat are respectively connected with two ends of the spring, the fixing seat is in interference fit with the inner wall of the water outlet port, a through hole communicated with the fluid cavity is formed in the fixing seat, an annular step matched with the piston is formed in the inner wall of the water outlet port, a gap exists between the piston and the inner wall of the fluid cavity, the piston is abutted with the annular step under the action of the spring in an initial state, when liquid in the fluid cavity positively flows, the piston is displaced towards the fixing seat, the spring is compressed, and the liquid in the fluid cavity flows out of the through hole. When the liquid in the fluid cavity flows reversely, the spring is restored to deform, so that the piston is abutted with the annular step to perform airtight blocking on the water outlet port, and backflow is prevented.

According to some embodiments of the utility model, the piston is provided with a limiting abutment ring capable of being matched with the annular step, and a gap exists between the limiting abutment ring and the inner wall of the fluid cavity.

According to some embodiments of the utility model, the outer surfaces of the water inlet port and the water outlet port are in a pagoda interface shape. The device is convenient to connect with an external soft pipeline, is simple to install and is not easy to fall off.

According to some embodiments of the utility model, the switch body is integrally formed, so that the production cost can be effectively reduced by integrally forming, and meanwhile, the waterproof performance is ensured.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is one of the cross-sectional views of an embodiment of the present utility model, showing an optical path diagram of an optical signal in a fluid chamber in a water-free state;

FIG. 2 is a second cross-sectional view of an embodiment of the present utility model, showing an optical path of an optical signal when the fluid chamber is filled with water;

fig. 3 is a schematic diagram of the embodiment of the utility model when the light shield is separated from the switch body.

Reference numerals:

100. a switch body; 101. a fluid chamber; 102. a mounting cavity; 103. an optical signal transmitting module; 104. an optical signal receiving module; 105. a light shield; 106. an opening; 107. a water inlet port; 108. a water outlet port; 109. a backflow prevention valve; 109a, a piston; 109b, springs; 109c, fixing base; 110. a through hole; 111. an annular step; 112. a limiting abutting ring;

201. a trapezoid boss.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

A water flow switch according to an embodiment of the present utility model will be described with reference to fig. 1 to 3.

As shown in fig. 1 and 2, a water flow switch according to an embodiment of the present utility model includes: the switch comprises a switch body 100 and a light regulating piece, wherein the switch body 100 is of a tubular structure, a fluid cavity 101 for liquid to flow through is arranged on the switch body 100, a mounting cavity 102 is arranged on one side of the switch body 100, and a light signal transmitting module 103 and a light signal receiving module 104 are arranged in the mounting cavity 102; the optical adjusting member is disposed in the fluid cavity 101, and is capable of adjusting an optical signal emitted by the optical signal emitting module 103, when the fluid cavity 101 is in a non-liquid state, the optical adjusting member is capable of adjusting the optical signal emitted by the optical signal emitting module 103, so that the optical signal receiving module 104 receives the optical signal to generate a first signal (as shown in fig. 1), and when the fluid cavity 101 is filled with liquid, the optical adjusting member is capable of adjusting the optical signal emitted by the optical signal emitting module 103 in cooperation with the liquid in the fluid cavity 101, so that the optical signal receiving module 104 is prevented from receiving the optical signal, thereby generating a second signal (as shown in fig. 2). This water flow switch, compare traditional water flow switch through photoelectric type response output monitoring signal, small and detect accurately, while simple structure, be convenient for production and equipment, when specifically using in water household electrical appliances simultaneously, generally cooperate the water pump to use, when drawing water, begin to be full of liquid and export the second signal in the fluid chamber 101, after drawing water to no water, be in no liquid state in the fluid chamber 101, then can export first signal, suggestion water tank does not have water (water has been taken out), thereby cooperate external circuit to realize stopping control to opening of water pump, and then can satisfy the more and more intelligent and accurate requirement of water household electrical appliances.

In some embodiments of the present utility model, the light adjusting member is a transparent trapezoid boss 201, two oblique sides of the trapezoid boss 201 are located in the fluid chamber 101, when the fluid chamber 101 is in a liquid-free state, the light signal emitted by the light signal emitting module 103 can be emitted into the trapezoid boss 201 and sequentially reflected by the two oblique sides of the trapezoid boss 201, and then emitted into the light signal receiving module 104; when the fluid cavity 101 is filled with liquid, the optical signal emitted by the optical signal emitting module 103 can be emitted into the trapezoid boss 201 and refracted from a bevel edge of the trapezoid boss 201 into the liquid in the fluid cavity 101, so that the optical signal is prevented from being received by the optical signal receiving module 104. The cross section of the trapezoid boss 201 is isosceles trapezoid, the included angle between two oblique sides of the trapezoid boss 201 is 90 degrees, when the fluid cavity 101 is in a liquid-free state, the two oblique sides of the trapezoid boss 201 are in air, the optical signals sent out by the optical signal transmitting module 103 are injected into the trapezoid boss 201 and are reflected at the two oblique sides of the trapezoid boss 201 in sequence, when the fluid cavity 101 is filled with liquid, the two oblique sides of the trapezoid boss 201 are in liquid, and the optical signals sent out by the optical signal transmitting module 103 are injected into the trapezoid boss 201 and are refracted into the liquid of the fluid cavity 101 from one oblique side of the trapezoid boss 201.

In some embodiments of the present utility model, the mounting cavity 102 is disposed on an outer sidewall of one side of the switch body 100, the trapezoid boss 201 is disposed on an inner sidewall of the same side of the switch body 100, and the switch body 100 is made of transparent material. The switch body 100 is made of transparent material, so that the optical signal emitted by the optical signal emitting module 103 in the installation cavity 102 can be emitted into the trapezoid boss 201, and when the fluid cavity 101 is in a liquid-free state, the optical signal emitted by the optical signal emitting module 103 can be received by the optical signal receiving module 104 in the installation cavity 102.

In some embodiments of the present utility model, the optical signal transmitting module 103 is an infrared transmitting lamp, and the optical signal receiving module 104 is an infrared photosensitive receiving lamp.

As shown in fig. 2 and 3, in some embodiments of the present utility model, a light shield 105 is detachably disposed on the switch body 100, and the light shield 105 shields the mounting cavity 102 and the trapezoidal boss 201. The light shield 105 can prevent the interference of external light, and further ensure the accuracy of monitoring.

In some embodiments of the present utility model, an opening 106 is disposed on one side of the light shield 105, and the light shield 105 is elastically clamped on the switch body 100 through the opening 106. The light shield 105 is convenient to detach and mount.

In some embodiments of the present utility model, the switch body 100 includes a water inlet port 107 and a water outlet port 108, and a backflow prevention valve 109 is provided on the water outlet port 108. The backflow prevention valve 109 can prevent liquid in the water flow switch from flowing back, and the accuracy of monitoring the water flow switch is ensured.

In some embodiments of the present utility model, as shown in fig. 1, the backflow preventing valve 109 includes a piston 109a, a spring 109b and a fixed seat 109c, where the piston 109a and the fixed seat 109c are connected to two ends of the spring 109b, the fixed seat 109c is installed with an interference fit with an inner wall of the outlet port 108, a through hole 110 communicating with the fluid chamber 101 is provided on the fixed seat 109c, an annular step 111 capable of matching with the piston 109a is provided on the inner wall of the outlet port 108, a gap exists between the piston 109a and an inner wall of the fluid chamber 101, in an initial state, the piston 109a abuts against the annular step 111 under the action of the spring 109b, when the liquid in the fluid chamber 101 flows forward, the piston 109a displaces toward the fixed seat 109c, and the spring 109b is compressed, and the liquid in the fluid chamber 101 flows out from the through hole 110. When the liquid in the fluid chamber 101 flows reversely, the spring 109b returns to its shape, so that the piston 109a abuts against the annular step 111, and the water outlet 108 is blocked in a sealing manner, thereby preventing backflow.

In some embodiments of the present utility model, a limiting abutment ring 112 capable of cooperating with the annular step 111 is provided on the piston 109a, and a gap exists between the limiting abutment ring 112 and the inner wall of the fluid chamber 101.

In some embodiments of the present utility model, the outer surfaces of the inlet port 107 and the outlet port 108 are in the shape of a pagoda interface. The device is convenient to connect with an external soft pipeline, is simple to install and is not easy to fall off.

In some embodiments of the present utility model, the switch body 100 is integrally formed. The integrated forming can effectively reduce the production cost, and the waterproof performance is guaranteed.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The present utility model is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, which are intended to be included in the scope of the present utility model as defined in the appended claims.

Claims

1. A water flow switch, comprising:

the switch comprises a switch body (100), wherein a fluid cavity (101) for liquid to flow through is formed in the switch body (100), an installation cavity (102) is formed in one side of the switch body (100), and an optical signal transmitting module (103) and an optical signal receiving module (104) are arranged in the installation cavity (102);

the optical adjusting piece is arranged in the fluid cavity (101), the optical adjusting piece can adjust an optical signal sent by the optical signal transmitting module (103), when the fluid cavity (101) is in a liquid-free state, the optical adjusting piece can adjust the optical signal sent by the optical signal transmitting module (103), so that the optical signal receiving module (104) receives the optical signal to generate a first signal, and when the fluid cavity (101) is filled with liquid, the optical adjusting piece can be matched with the liquid in the fluid cavity (101) to adjust the optical signal sent by the optical signal transmitting module (103), and the optical signal receiving module (104) is prevented from receiving the optical signal, so that a second signal is generated.

2. A water flow switch as claimed in claim 1, wherein: the light adjusting piece is a transparent trapezoid boss (201), two oblique sides of the trapezoid boss (201) are located in the fluid cavity (101), when the fluid cavity (101) is in a liquid-free state, light signals emitted by the light signal emitting module (103) can be emitted into the trapezoid boss (201) and are emitted into the light signal receiving module (104) after being reflected by the two oblique sides of the trapezoid boss (201) in sequence; when the fluid cavity (101) is filled with liquid, the optical signal emitted by the optical signal emitting module (103) can be injected into the trapezoid boss (201) and refracted from one bevel edge of the trapezoid boss (201) into the liquid in the fluid cavity (101) so as to be prevented from being received by the optical signal receiving module (104).

3. A water flow switch as claimed in claim 2, wherein: the installation cavity (102) is arranged on the outer side wall of one side of the switch body (100), the trapezoid boss (201) is arranged on the inner side wall of the same side of the switch body (100), and the switch body (100) is made of transparent materials.

4. A water flow switch according to claim 3, wherein: a light shield (105) is detachably arranged on the switch body (100), and the light shield (105) shields the mounting cavity (102) and the trapezoid boss (201).

5. A water flow switch as claimed in claim 4, wherein: an opening (106) is formed in one side of the light shield (105), and the light shield (105) is elastically clamped on the switch body (100) through the opening (106).

6. A water flow switch as claimed in claim 1, wherein: the switch body (100) comprises a water inlet port (107) and a water outlet port (108), and a backflow prevention valve (109) is arranged on the water outlet port (108).

7. A water flow switch as claimed in claim 6, wherein: the backflow prevention valve (109) comprises a piston (109 a), a spring (109 b) and a fixing seat (109 c), wherein the piston (109 a) and the fixing seat (109 c) are respectively connected with two ends of the spring (109 b), the fixing seat (109 c) is installed with the inner wall of the water outlet port (108) in an interference fit mode, a through hole (110) communicated with the fluid cavity (101) is formed in the fixing seat (109 c), an annular step (111) capable of being matched with the piston (109 a) is formed in the inner wall of the water outlet port (108), a gap exists between the piston (109 a) and the inner wall of the fluid cavity (101), in an initial state, the piston (109 a) is abutted to the annular step (111) under the action of the spring (109 b), when liquid in the fluid cavity (101) flows forwards, the piston (109 a) moves towards the direction of the fixing seat (109 c), meanwhile, the spring (109 b) is compressed, and the liquid in the fluid cavity (101) flows out of the through hole (110).

8. A water flow switch as claimed in claim 7, wherein: the piston (109 a) is provided with a limiting abutting ring (112) which can be matched with the annular step (111), and a gap exists between the limiting abutting ring (112) and the inner wall of the fluid cavity (101).

9. A water flow switch as claimed in claim 6, wherein: the outer surfaces of the water inlet port (107) and the water outlet port (108) are in a pagoda interface shape.

10. A water flow switch as claimed in claim 1, wherein: the switch body (100) is integrally formed.