CN219284409U

CN219284409U - Contact type water level detection structure

Info

Publication number: CN219284409U
Application number: CN202320174334.5U
Authority: CN
Inventors: 张虔源; 张湘建
Original assignee: Anhui Moyu Technology Co ltd
Current assignee: Anhui Moyu Technology Co ltd
Priority date: 2023-01-18
Filing date: 2023-01-18
Publication date: 2023-06-30
Anticipated expiration: 2033-01-18

Abstract

The utility model relates to the technical field of water level detection, in particular to a contact type water level detection structure, which comprises a water level detection contact assembly, a metal detection point and a metal detection point, wherein the water level detection contact assembly is fixedly arranged at the bottom of an outer barrel and used as an anode or a cathode, the metal detection point is fixedly arranged at different water level positions in the outer barrel and used as a cathode or an anode, the metal detection point can form a closed loop with the metal contact through liquid in contact, and an electric control board is electrically connected to the closed loop, so that water level detection and control can be realized; the water level is accurately detected and controlled by the water level detection contact assembly fixedly arranged in the outer barrel and the electric control board; through the metal contact and the metal detection point that set up at the bottom and different water level height department respectively opposite electrode, can form closed electric loop when reaching different detection water levels, the automatically controlled board detects different water levels of discernment, is in the disconnected state when the water level does not reach, has higher detection accuracy to this structural principle is simple, and the structure is simplified, and the cost is advantageous.

Description

Contact type water level detection structure

Technical Field

The utility model relates to the technical field of water level detection, in particular to a contact type water level detection structure.

Background

In the using process of the drum washing machine, water with different liquid levels is needed to be injected according to different washing conditions, and most of the existing drum washing machines detect the water level in a pressure type water level sensor detection mode.

However, the existing pressure sensor requires complex pipeline connection and software identification control in water level detection, so that the detection cost is high; meanwhile, the washing machine is easy to clamp and press the return air pipeline of the sensor during assembly, so that the water level sensing detection is invalid or the detected data have larger deviation, and the normal use of the washing machine is directly affected. It is therefore desirable to have a device that can accurately detect the liquid level while avoiding excessive costs. In view of this, we propose a contact type water level detection structure.

Disclosure of Invention

In order to make up for the defects, the utility model provides a contact type water level detection structure.

The technical scheme of the utility model is as follows:

the utility model provides a contact type water level detection structure, includes can pour into and hold the outer bucket of liquid into, still includes:

the water level detection contact assembly comprises a metal contact which is fixedly arranged at the bottom of the outer barrel and used as an anode or a cathode, and the water level detection contact assembly further comprises metal detection points which are fixedly arranged at different water level heights inside the outer barrel and used as cathodes or anodes, wherein the metal detection points can form a closed loop with the metal contact through liquid in contact, and an electric control board is electrically connected to the closed loop, so that water level detection and control can be realized.

Preferably, the water level detection contact assembly comprises a water level detection bolt, a sealing ring which can play a role in sealing and water isolation is sleeved on the water level detection bolt, the water level detection bolt is installed on the fastening nut in a threaded mode, and the water level detection bolt is provided with a lead-out part in a threaded mode.

Preferably, the lead-out part comprises a contact piece which can play a role in conducting connection, and the lead-out wire which can conduct a closed loop is fixedly connected to the contact piece.

Preferably, the outer barrel bottom be equipped with the circular recess that water level detection bolt size agrees with, circular recess bottom be equipped with the recess lower surface that the sealing washer agrees with in order to improve the seal, the outer barrel is located circular recess below and is equipped with can the screw thread installation water level detection bolt's the perforation that is used, the circular recess back is equipped with can install fixedly the mounting platform of automatically controlled board and lead-out wire.

Preferably, the leading-out part is positioned at one side of the mounting platform, the whole water level detection bolt is made of metal conductive materials, and at least any one of the fastening nut or the bottom of the outer barrel is made of or provided with insulating materials on the surface.

Preferably, the outgoing line and the metal detection points at different water level heights are respectively connected with the electric control board in parallel through wires.

Compared with the prior art, the utility model has the beneficial effects that:

according to the contact type water level detection structure, the water level can be accurately detected and controlled by the water level detection contact assembly fixedly arranged in the outer barrel and the electric control plate; through the metal contact and the metal detection point that set up at the bottom and different water level height department respectively opposite electrode, can form closed electric loop when reaching different detection water levels, the automatically controlled board detects different water levels of discernment, is in the disconnected state when the water level does not reach, has higher detection accuracy to this structural principle is simple, and the structure is simplified, and the cost is advantageous.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:

FIG. 1 is a schematic view of a water level sensing contact assembly of the present utility model;

FIG. 2 is a schematic diagram of an outer tub of the present utility model;

FIG. 3 is an installation view of the outer tub and water level sensing contact assembly of the present utility model;

FIG. 4 is an installation diagram of an embodiment of the present utility model;

fig. 5 is a circuit diagram of the present utility model.

The meaning of each reference numeral in the figures is:

1. a water level detection contact assembly; 11. a water level detection bolt; 12. a seal ring; 13. a lead-out part; 131. a contact piece; 132. a lead-out wire; 14. a fastening nut;

2. an outer tub; 21. a circular groove; 22. the lower surface of the groove; 23. perforating; 24. and (5) installing a platform.

Detailed Description

The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the utility model are shown in the drawings.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1-5, the present utility model is described in detail by the following embodiments:

a contact type water level detection structure, comprising an outer barrel 2 capable of injecting and containing liquid, and further comprising:

the water level detection contact assembly 1, the water level detection contact assembly 1 includes the metal contact of positive pole or negative pole as the fixed mounting in outer bucket 2 bottom, and water level detection contact assembly 1 still includes the metal check point of different water level height departments as negative pole or positive pole of fixed mounting in outer bucket 2 inside, and the metal check point can form closed circuit with the liquid that the metal contact passed through the contact, and is connected with the automatically controlled board on the closed circuit electricity, can realize water level detection and control.

It should be explained that, in this embodiment, a metal contact is specifically set at the bottommost part of the outer barrel 2 as a negative electrode for water level detection, metal detection points serving as positive electrode detection points are installed at positions of different water level lines to be set in the outer barrel 2, and the metal detection points and the metal contact are both connected to an electric control board; when the water level reaches different contacts, each metal contact can be conducted to form a closed loop to generate a current electric signal, and the electric control board can identify different adjusted water levels after detecting the electric signal, so that accurate water level detection and control are realized.

The water level detection contact assembly 1 comprises a water level detection bolt 11, a sealing ring 12 capable of playing a role in sealing and isolating water is sleeved on the water level detection bolt 11, the water level detection bolt 11 is installed on a fastening nut 14 in a threaded mode, a lead-out portion 13 is installed on the water level detection bolt 11 in a threaded mode, the lead-out portion 13 comprises a contact piece 131 capable of playing a role in conducting connection, and a lead-out wire 132 capable of conducting a closed loop is fixedly connected to the contact piece 131. As shown in fig. 1 and 3, mainly functions as a component for electrical connection conduction.

The bottom of the outer barrel 2 is provided with a circular groove 21 which is matched with the water level detection bolt 11 in size, the bottom of the circular groove 21 is provided with a groove lower surface 22 which is matched with the sealing ring 12 to improve the sealing performance, the outer barrel 2 is positioned below the circular groove 21 and is provided with a through hole 23 which can be used for installing the water level detection bolt 11 in a threaded manner, the back of the circular groove 21 is provided with an installation platform 24 which can be used for installing and fixing an electric control plate and an outgoing line 132, the outgoing portion 13 is positioned on one side of the installation platform 24, the water level detection bolt 11 is integrally made of a metal conductive material, and the bottom of the fastening nut 14 or the outer barrel 2 is made of an insulating material. As shown in fig. 1, 2 and 3, the insulating material is mainly used for avoiding the phenomenon of continuous electricity caused by water level sputtering in the outer barrel 2 due to excessive conductive parts, so that short circuit is avoided, and accurate detection is ensured.

The outgoing line 132 and the metal detection points at different water level heights are respectively and electrically connected with the electric control board in parallel through wires, and the parallel connection is to enable each loop to have an independent detection function, so that the integral function failure caused by single damage is avoided, as shown in fig. 5, IO-YW1 and IO-YW2 are connected to the IO port of the MCU, and 2 feet and 3 feet of the CN12 are connected with corresponding water level contacts in the actual barrel. In the anhydrous state, the input voltages YW1 and YW2 are close to 0V due to the grounding; when water exists in the barrel, a water resistance, namely a resistor, is formed between 5V and the 2 feet of CN2, and after the water resistance is divided by 100K, the voltage of YW1 is changed, so that whether the corresponding water level is reached is judged; wherein if the water is purer, i.e. the conductivity is lower, the voltage detected by the MCU is lower, and vice versa.

The contact type water level detection structure of this embodiment is equipped with low, well, high three-gear water level setting when using in the washing machine, sets up metal detection point at the different height of outer bucket, in order to guarantee to have the detection benchmark simultaneously, can install water level detection contact assembly 1 in the barrel head, as shown in fig. 4, point A is a negative pole detection point that is located the barrel head, and wherein point A department fixed mounting water level detection contact assembly 1, the rest is as anodal respectively: a low water level metal detection point B, a middle water level metal detection point C and a high water level metal detection point D, wherein when the washing machine is fed with water, the water level is firstly higher than the point A at the lowest position, namely, the water level is contacted with the water level detection bolt 11 through water; as the water temperature rises, then the water reaches the point B, and after the point AB is conducted, the water level detection bolt 11 forms a closed loop through the lead-out part 13 and a wire connected with the metal detection point; the electric control board system recognizes that the water level reaches the low water level and executes corresponding program operation; when water is continuously fed, the water can reach the point C, so that the point CA is conducted, the system can recognize that the water level reaches the middle water level, and corresponding program operation is executed; when water is fed continuously, the water reaches the point D, so that the point DA is conducted, and the system recognizes that the water level reaches the high water level. After water enters the required water level according to the set requirement, the electric control board can control the water inlet valve to stop water inlet and enter a washing state, when the washing time reaches the set value, the computer board controls the water outlet valve to start, water drainage is started, whether the lowest water level is disconnected is detected during water drainage, because the lowest water level is at the lowest point in the machine, the water is always on during washing, when the water drainage is disconnected to the lowest water level point, the water is judged to be drained, then the water outlet valve is closed, water inlet is started again to perform rinsing operation, and the process is repeated until the program is finished.

The accurate water level detection control is realized through the conduction mode of contact between the water medium and the metal sheet, and meanwhile, the control mode has no return air pipeline, and the problem of inaccurate detection caused by pipeline pressure disassembly does not exist.

The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the utility model referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the utility model. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims

1. The utility model provides a contact type water level detection structure, includes can pour into and hold outer bucket (2) of liquid, its characterized in that: further comprises:

the water level detection contact assembly (1), water level detection contact assembly (1) is including fixed mounting be in outer bucket (2) bottom is as anodal or negative pole metal contact, water level detection contact assembly (1) is still including fixed mounting be in inside different water level height departments of outer bucket (2) are as the metal check point of negative pole or anodal, the metal check point can form closed circuit with the liquid that the metal contact passes through the contact, just the electric control board is connected with to the electricity on the closed circuit, can realize water level detection and control.

2. The contact type water level detecting structure as claimed in claim 1, wherein: the water level detection contact assembly (1) comprises a water level detection bolt (11), a sealing ring (12) capable of playing a role in sealing and isolating water is sleeved on the water level detection bolt (11), the water level detection bolt (11) is installed on a fastening nut (14) in a threaded mode, and a lead-out portion (13) is installed on the water level detection bolt (11) in a threaded mode.

3. The contact type water level detecting structure as claimed in claim 2, wherein: the lead-out part (13) comprises a contact piece (131) which can play a role in conducting connection, and a lead-out wire (132) which can conduct a closed loop is fixedly connected to the contact piece (131).

4. A contact type water level detecting structure as claimed in claim 3, wherein: the utility model discloses a water level detection bolt, including outer bucket (2), sealing washer (12), outer bucket (2) bottom be equipped with circular recess (21) that water level detection bolt (11) size agreed with, circular recess (21) bottom be equipped with sealing washer (12) agree with recess lower surface (22) in order to improve the seal, outer bucket (2) are located circular recess (21) below and are equipped with can install by screw thread water level detection bolt (11) inertial perforation (23), circular recess (21) back is equipped with can install fixedly mounting platform (24) of automatically controlled board and lead-out wire (132).

5. The contact type water level detecting structure as claimed in claim 4, wherein: the extraction part (13) is positioned on one side of the mounting platform (24), the water level detection bolt (11) is integrally made of metal conductive materials, and at least any one of the fastening nut (14) or the bottom of the outer barrel (2) is made of or provided with insulating materials on the surface.

6. The contact type water level detecting structure as claimed in claim 5, wherein: the outgoing line (132) and the metal detection points at different water level heights are respectively connected with the electric control board in parallel through wires.