CN215925356U - Water level detection device for washing machine and washing machine - Google Patents
Water level detection device for washing machine and washing machine Download PDFInfo
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- CN215925356U CN215925356U CN202121962578.7U CN202121962578U CN215925356U CN 215925356 U CN215925356 U CN 215925356U CN 202121962578 U CN202121962578 U CN 202121962578U CN 215925356 U CN215925356 U CN 215925356U
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Abstract
The application provides a water level detection device and washing machine for washing machine, water level detection device includes for the washing machine: the washing machine comprises a shell, a water inlet, a water outlet and a water outlet, wherein the shell is provided with an air inlet, the shell is internally provided with an accommodating cavity, and the air inlet is used for being connected with an outer cylinder of the washing machine; the elastic diaphragm is arranged in the accommodating cavity, is connected with the shell, divides the accommodating cavity into a first cavity and a second cavity which are independent, and is communicated with the air inlet; and the strain gauge is positioned in the first cavity and is arranged on the elastic diaphragm. This application is according to the resistance change of foil gage, can obtain washing machine's water level height, and the simple structure of foil gage, sensitivity is high, ensures that washing machine inflow control's accurate nature is high.
Description
Technical Field
The application belongs to the technical field of household appliances, and particularly relates to a water level detection device for a washing machine and the washing machine.
Background
In the prior art, a washing machine water level sensor detects water level by adopting an LC oscillating circuit water level sensor, the LC oscillating circuit frequency is provided for a washing machine computer board, and the washing machine computer board controls and adjusts water inflow of the washing machine according to the oscillating circuit frequency signal, but the LC oscillating circuit water level sensor has high failure rate and poor precision, so that the water inflow precision of the washing machine is low.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a water level detection device and washing machine for washing machine to solve the problem that the current adoption LC tank level sensor detects the water level and leads to washing machine water inlet control accuracy low.
In a first aspect, an embodiment of the present application provides a water level detecting device for a washing machine, including:
the washing machine comprises a shell, wherein an air inlet is formed in the shell, an accommodating cavity is formed in the shell, and the air inlet is used for being connected with an outer barrel of the washing machine;
the elastic diaphragm is arranged in the accommodating cavity, is connected with the shell, divides the accommodating cavity into a first cavity and a second cavity which are independent, and the air inlet is communicated with the second cavity;
a strain gauge located within the first cavity and mounted on the elastic diaphragm.
Optionally, the casing includes a base and a cover plate, the cover plate is located above the base, the base is connected with the cover plate, the elastic diaphragm is located between the base and the cover plate, and the air inlet is arranged on the base.
Optionally, a connecting platform is arranged at the top of the base, the elastic diaphragm is arranged on the connecting platform, and the elastic diaphragm is connected with the connecting platform in a sealing manner.
Optionally, one side of the connecting platform facing the cover plate is provided with a first clamping groove, one side of the cover plate facing the connecting platform is provided with a first protrusion, the edge of the first protrusion and the edge of the elastic diaphragm are located in the first clamping groove, and the base, the cover plate and the elastic diaphragm are fixedly connected through the first clamping groove and the first protrusion.
Optionally, the elastic diaphragm is provided with a second protrusion, the second protrusion is provided with a second clamping groove, the first side wall of the first clamping groove is located in the second clamping groove, and the second side wall of the second clamping groove is located in the first clamping groove.
Optionally, the first protrusion is disposed at an edge of the cover plate, and the first protrusion is provided with an aligning opening, which is connected to a top of the other side wall of the first slot.
In a second aspect, an embodiment of the present application further provides a washing machine, including:
a water level detecting device for a dry washing machine according to any one of the above;
the outer barrel is communicated with an air inlet of the water level detection device for the washing machine through a communicating pipe, and the horizontal height of the position where the air inlet is located is higher than the highest horizontal height of the position where the outer barrel is located.
Optionally, a communicating chamber is arranged outside the outer cylinder, and the communicating chamber communicates the outer cylinder with one end of the communicating pipe.
Optionally, the outer barrel is provided with a first opening of the communication chamber near the bottom, and the bottom of the communication chamber is flush with the lowest position of the first opening.
Optionally, a second opening is arranged at the top of the communicating chamber, the second opening is connected with the communicating pipe, and the horizontal height of the position of the first opening is lower than the horizontal height of the position of the second opening.
The embodiment of the application provides a pair of water level detection device for washing machine, set up the foil gage in elastic diaphragm's one side, it changes along with intaking its atmospheric pressure of change to be located the second chamber of elastic diaphragm opposite side, elastic diaphragm warp and drives the foil gage deformation, foil gage resistance change is relevant with its deformation degree, consequently, only need the resistance change according to the foil gage, can obtain washing machine's water level height, the simple structure of foil gage, sensitivity is high, it is high to ensure that washing machine inflow control's precision.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings without inventive effort for a person skilled in the art.
For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.
Fig. 1 is a schematic structural view of a water level detecting device for a washing machine according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a base of a water level detecting device for a washing machine according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a cover plate of a water level detecting device for a washing machine according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of an elastic diaphragm of a water level detecting device for a washing machine according to an embodiment of the present disclosure.
Fig. 5 is a partially enlarged view of a portion a in fig. 1.
Fig. 6 is a schematic structural diagram of a washing machine according to an embodiment of the present application.
Fig. 7 is a partial enlarged view of fig. 6 at B.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a water level detection device and washing machine for washing machine to solve the problem that the current adoption LC tank level sensor detects the water level and leads to washing machine water inlet control accuracy low. The following description will be made with reference to the accompanying drawings.
The water level detection device of the washing machine provided by the embodiment of the application can be applied to full-automatic washing, including but not limited to a drum washing machine, a pulsator washing machine and the like.
Referring to fig. 1, a schematic structural view of a water level detecting device for a washing machine according to an embodiment of the present application is shown.
Water level detection device for washing machine includes: a housing 1, an elastic diaphragm 2 and a strain gauge 3.
Wherein, be provided with air inlet 10 on the casing 1, it holds chamber 11 to have in the casing 1, air inlet 10 is used for connecting washing machine's urceolus 4, elastic diaphragm 2 installs in holding chamber 11, elastic diaphragm 2 is connected with casing 1, elastic diaphragm 2 will hold chamber 11 and cut apart into independent first chamber 110 and second chamber 111, air inlet 10 and second chamber 111 intercommunication, a airtight cavity of second chamber 111 for having an air inlet 10, foil gage 3 is located first chamber 110, install on elastic diaphragm 2.
Preferably, the elastic diaphragm 2 is made of a rubber material, and has good rubber resilience and is easy to deform.
Preferably, since the maximum deformation position of the elastic diaphragm 2 is at the center position thereof, the strain gauge 3 is provided at the center position of the elastic diaphragm 2, and the sensitivity of the strain gauge 3 to a change in the air pressure is further improved.
It can be understood that the air inlet 10 is used for being connected with the outer cylinder 4 of the washing machine, when the washing machine continuously feeds water, water pressure is generated along with the continuous rising of the water level in the outer cylinder 4, the water pressure acts on the gas in the second cavity 111, the pressure applied to the gas acts on the elastic diaphragm 2 to cause the elastic diaphragm 2 to deform, the elastic diaphragm 2 drives the strain gauge 3 on the other side surface to deform, the resistance change of the strain gauge can be calculated according to the deformation of the strain gauge 3, the relation between the resistance change of the strain gauge 3 and the water level height in the washing machine is obtained through measurement, namely the water level height can be calculated according to the resistance change of the strain gauge, and the water inlet of the washing machine is further controlled; when the washing machine discharges water, as the water level in the outer tub 4 continues to decrease, the water pressure decreases, the pressure of the gas acting on the second chamber 111 decreases, the elastic diaphragm 2 gradually recovers its deformation, and the strain gauge also recovers its deformation. The main detection part is the strain gauge 3, the sensitivity is high, the product structure is simple, the failure rate is low, and the water inlet detection precision is high.
In some embodiments, referring to fig. 1, a schematic structural diagram of a water level detection device for a washing machine according to an embodiment of the present disclosure is provided.
The shell 1 comprises a base 12 and a cover plate 13, wherein the cover plate 13 is positioned above the base 12, the base 12 is connected with the cover plate 13, the elastic diaphragm 2 is positioned between the base 12 and the cover plate 13, and the air inlet 10 is arranged on the base 12. The elastic diaphragm 2 and the strain gauge 3 are installed or overhauled by opening or closing the cover plate 13, the structure is simple, and the installation and the maintenance are convenient.
In some embodiments, referring to fig. 2, fig. 2 is a schematic structural diagram of a base 12 of a water level detecting device for a washing machine according to an embodiment of the present disclosure.
The top of the base 12 is provided with a connecting platform 120, the elastic diaphragm 2 is arranged on the connecting platform 120, and the elastic diaphragm 2 is hermetically connected with the connecting platform 120.
Specifically, the base 12 includes a connecting platform 120, a body 121 and a connector 122, the air inlet 10 is provided on the bottom of the body 121, the connector 122 is connected to the air inlet 10 and extends downward from the air inlet 10, the connecting platform 120 is provided on the upper portion of the body 121 and extends outward from the top of the body 121.
The contact part of the elastic diaphragm 2 and the connecting platform 120 has the function of a sealing gasket, and the contact area of the elastic diaphragm 2 and the base 12 is increased through the connecting platform 120, so that the sealing performance of the second chamber 111 is improved.
In some embodiments, referring to fig. 2, 3, 4 and 5, fig. 2 is a schematic structural diagram of a base 12 of a water level detecting device for a washing machine according to an embodiment of the present disclosure, fig. 3 is a schematic structural diagram of a cover plate 13 of the water level detecting device for a washing machine according to an embodiment of the present disclosure, fig. 4 is a schematic structural diagram of an elastic membrane 2 of the water level detecting device for a washing machine according to an embodiment of the present disclosure, and fig. 5 is a partial enlarged view of a portion a in fig. 1.
Connecting platform 120 is provided with first draw-in groove 123 towards one side of apron 13, first draw-in groove 123 is located connecting platform 120's edge, apron 13 is provided with first arch 130 towards one side of connecting platform 120, the edge of first arch 130 and elastic diaphragm 2 is located first draw-in groove 123, be connected unable adjustment base 12 through first draw-in groove 123 and first arch 130, apron 13 and elastic diaphragm 2, do not need the assistance of other screw bolts or welded structure, make things convenient for base 12, apron 13 and elastic diaphragm 2 to install and dismantle.
Furthermore, the elastic diaphragm 2 is provided with a second protrusion 20, the second protrusion 20 is provided with a second clamping groove 21, the elastic diaphragms 2 on two sides of the second clamping groove 21 are located on the same horizontal line and attached to the inner side surface of the connecting platform 120, the first side wall 124 of the first clamping groove 123 is located in the second clamping groove 21, the second side wall 22 of the second clamping groove 21 is located in the first clamping groove 123, the second protrusion 20 forms a sealing protrusion, the sealing performance of the elastic diaphragm 2 and the connecting platform 120 is improved, and the sealing performance of the second cavity 111 is guaranteed.
Further, the first protrusion 130 is disposed at the edge of the cover plate 13, the first protrusion 130 is provided with an aligning opening 131, the aligning opening 131 is connected to the top of the other side wall 125 of the first slot 123, specifically, the section of the second side wall 22 of the second slot 21 is "□", the section of the first protrusion 130 is "﹃", the vertical edge of the first protrusion 130 and the second side wall 22 of the second slot 21 jointly act to be fixed in the first slot 123, the transverse edge of the first protrusion 130 is attached to the end of the other side wall of the first slot 123, the outer edge of the cover plate 13 is flush with the outer edge of the connecting platform 120, and the product structure is beautiful in appearance.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a washing machine according to an embodiment of the present disclosure.
A washing machine comprising:
any one of the above water level detecting devices for a washing machine;
and an outer tub 4, the outer tub 4 being communicated with an air inlet 10 of a water level detecting device for a washing machine through a communication pipe 40, and a level of the air inlet 10 being higher than a highest level of the outer tub 4. Here, the position of the air inlet 10 refers to an installation position of the water level detecting device when installed on the washing machine, and the position of the outer tub 4 refers to an installation position of the outer tub when installed on the washing machine.
As will be appreciated, as the water level in the tub 4 continues to rise as the tub 4 continues to fill, water pressure will build up, since the level of the position of the air inlet 10 is higher than the highest level of the position of the outer tub 4, according to the principle of the U-shaped pipe, the air in the second chamber 111 of the water level monitor for the washing machine is not exhausted, when the water level in the outer cylinder 4 rises, the generated water pressure acts on the gas in the second chamber 111, the pressure applied to the gas acts on the elastic diaphragm 2 to cause the elastic diaphragm 2 to deform, the elastic diaphragm 2 drives the strain gauge 3 on the other side surface to deform, because the water pressure, the deformation amount of the strain gauge 3 and the resistance change of the strain gauge are in a linear relation, the resistance change of the strain gauge is calculated according to the deformation amount of the strain gauge 3, the resistance change of the strain gauge 3 can be measured to obtain the height change of the water level in the washing machine, so that the water inflow of the washing machine is controlled; when the washing machine discharges water, as the water level in the outer tub 4 continues to decrease, the water pressure decreases, the pressure of the gas acting on the second chamber 111 decreases, the elastic diaphragm 2 gradually recovers its deformation, and the strain gauge also recovers its deformation. The main detection part is the strain gauge 3, the sensitivity is high, the product structure is simple, the failure rate is low, and the water inlet detection precision is high.
Further, a communication chamber 41 is provided outside the outer tub 4, the communication chamber 41 communicates the outer tub 4 and one end of the communication pipe 40, the communication chamber 41 is mounted on an outer wall of the outer tub 4 to form a communication chamber 410 with a portion of the outer wall of the outer tub 4, and the communication chamber 410 communicates the inside of the outer tub 4 with the second chamber 111 for receiving a portion of water flowing out of the outer tub 4 when water is supplied to the washing machine.
In some embodiments, referring to fig. 7, fig. 7 is an enlarged view of a portion of fig. 6 at B.
The outer cylinder 4 is provided with a first opening 42 of the communication chamber 41 near the bottom, and the bottom of the communication chamber 41 is flush with the lowermost part of the first opening 42. Along with the continuous water level rise of the outer barrel 4, after the first opening 42 is submerged, the second cavity 111 forms a closed cavity, the communication chamber 41 contains a part of water, when the outer barrel 4 drains water, the water in the communication chamber 41 also needs to be discharged, the bottom of the communication chamber 41 and the first opening 42 are flush and positioned on the same horizontal line, the water in the communication chamber 41 is ensured to be completely drained, and the phenomenon that the part of water is remained to cause fermentation and odor is avoided.
Further, a second opening 43 is arranged at the top of the communicating chamber 41, the second opening 43 is connected with the communicating pipe 40, and the horizontal height of the position of the first opening 42 is lower than the horizontal height of the position of the second opening 43, that is, the highest water inlet position of the first opening 42 is lower than the lowest water inlet or air inlet position of the second opening 43. When water is also fed into the communication pipe 40, the water in the communication pipe 40 is ensured to be completely emptied.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.
In the description of the present application, the terms "communicate" and "connect" are used for descriptive purposes only and may either directly communicate or connect or implicitly include indirect communication or connection of one or more features.
The dryer inner cylinder device provided by the embodiment of the application is described in detail above, and the principle and the implementation mode of the application are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A water level detecting apparatus for a washing machine, comprising:
the washing machine comprises a shell, wherein an air inlet is formed in the shell, an accommodating cavity is formed in the shell, and the air inlet is used for being connected with an outer barrel of the washing machine;
the elastic diaphragm is arranged in the accommodating cavity, is connected with the shell, divides the accommodating cavity into a first cavity and a second cavity which are independent, and the air inlet is communicated with the second cavity;
a strain gauge located within the first cavity and mounted on the elastic diaphragm.
2. The water level detecting apparatus of claim 1, wherein the housing includes a base and a cover, the cover is disposed above the base, the base is connected to the cover, the elastic diaphragm is disposed between the base and the cover, and the air inlet is disposed on the base.
3. The water level detecting device for washing machine as claimed in claim 2, wherein a connecting platform is provided on the top of the base, the elastic diaphragm is disposed on the connecting platform, and the elastic diaphragm is connected with the connecting platform in a sealing manner.
4. The water level detecting device for washing machine as claimed in claim 3, wherein a first engaging groove is formed on a side of the connecting platform facing the cover plate, a first protrusion is formed on a side of the cover plate facing the connecting platform, the first protrusion and an edge of the elastic diaphragm are located in the first engaging groove, and the base, the cover plate and the elastic diaphragm are fixed by the first engaging groove and the first protrusion.
5. The water level detecting apparatus for washing machine according to claim 4, wherein the elastic diaphragm is provided with a second protrusion, the second protrusion is provided with a second locking groove, a first side wall of the first locking groove is located in the second locking groove, and a second side wall of the second locking groove is located in the first locking groove.
6. The water level detecting device of claim 4, wherein the first protrusion is disposed at an edge of the cover plate, and the first protrusion is provided with an aligning opening, and the aligning opening is connected to a top of the other side wall of the first locking groove.
7. A washing machine, characterized by comprising:
a water level detecting apparatus for a washing machine according to any one of claims 1 to 6;
the outer barrel is communicated with an air inlet of the water level detection device for the washing machine through a communicating pipe, and the horizontal height of the position where the air inlet is located is higher than the highest horizontal height of the position where the outer barrel is located.
8. A washing machine as claimed in claim 7, wherein: a communicating chamber is arranged outside the outer barrel and is communicated with the outer barrel and one end of the communicating pipe.
9. A washing machine as claimed in claim 8, wherein: the outer cylinder is provided with a first opening of the communication chamber close to the bottom, and the bottom of the communication chamber is flush with the lowest position of the first opening.
10. A washing machine as claimed in claim 9, wherein: the top of the communicating chamber is provided with a second opening, the second opening is connected with the communicating pipe, and the horizontal height of the position of the first opening is lower than that of the position of the second opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121962578.7U CN215925356U (en) | 2021-08-19 | 2021-08-19 | Water level detection device for washing machine and washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121962578.7U CN215925356U (en) | 2021-08-19 | 2021-08-19 | Water level detection device for washing machine and washing machine |
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| Publication Number | Publication Date |
|---|---|
| CN215925356U true CN215925356U (en) | 2022-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121962578.7U Active CN215925356U (en) | 2021-08-19 | 2021-08-19 | Water level detection device for washing machine and washing machine |
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| CN (1) | CN215925356U (en) |
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2021
- 2021-08-19 CN CN202121962578.7U patent/CN215925356U/en active Active
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