CN114575110A - Liquid level detection device and washing machine with same - Google Patents
Liquid level detection device and washing machine with same Download PDFInfo
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- CN114575110A CN114575110A CN202210171908.3A CN202210171908A CN114575110A CN 114575110 A CN114575110 A CN 114575110A CN 202210171908 A CN202210171908 A CN 202210171908A CN 114575110 A CN114575110 A CN 114575110A
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- 239000007788 liquid Substances 0.000 title claims abstract description 132
- 238000005406 washing Methods 0.000 title claims abstract description 77
- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 230000008859 change Effects 0.000 claims abstract description 32
- 230000009471 action Effects 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 230000000670 limiting effect Effects 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 9
- 101150114468 TUB1 gene Proteins 0.000 description 19
- 230000003467 diminishing effect Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/087—Water level measuring or regulating devices
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/18—Washing liquid level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The invention discloses a liquid level detection device and a washing machine with the same. The air bag is positioned outside the first container and is communicated with the inner cavity of the first container; the first container is filled with liquid in the inner cavity and is also communicated with the second container through a pipeline, and a flowmeter is arranged on the pipeline; the volume change of the air bag is opposite to and related to the volume change of the inner cavity of the second container; when the air bag is pressed to increase and reduce the volume, the liquid in the first container flows into the second container, and when the air bag is pressed to reduce and rebound the volume, the liquid in the second container flows into the first container. The flowmeter arranged on the pipeline can detect the liquid flow, so that the volume change of the air pocket and the pressure borne by the air pocket can be correspondingly explained, the liquid level in the washing bucket is finally reflected, the structure is simple, the installation is simple and convenient, only the liquid level detection is carried out, other actions of the washing machine are not participated, the equipment loss is reduced, and the possibility of equipment failure caused by the participation of unnecessary actions is avoided.
Description
Technical Field
The invention belongs to the field of washing machines, and particularly relates to a liquid level detection device and a washing machine with the same.
Background
The washing machine needs to detect the water level in the washing bucket during washing, and the existing liquid level detection device has a complex structure and is inconvenient to use.
The application number is 202120258439.X Chinese patent discloses a liquid level detection device and a washing machine with the same, wherein the liquid level detection device is used for detecting liquid level and controlling related actions during water storage and drainage of the washing machine, and the operations except for the liquid level detection function are inevitably required, and the water storage and drainage actions of the washing machine occur for many times in the washing process, so that the operation is inconvenient, and equipment faults are easily caused due to more mechanisms.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a liquid level detection device which is simple in equipment structure, convenient and fast to install and reliable in operation.
The invention also aims to provide a washing machine with the liquid level detection device.
In order to solve the technical problems, the invention adopts the technical scheme that:
a liquid level detection device comprises a first container, an air bag, a flow meter and a second container.
The air bag is positioned outside the first container and is communicated with the inner cavity of the first container; the first container is filled with liquid in the inner cavity and is also communicated with the second container through a pipeline, and a flowmeter is arranged on the pipeline; the volume change of the air bag is opposite to and related to the volume change of the inner cavity of the second container; when the air bag is pressurized to increase the volume and reduce the volume, the liquid in the first container flows into the second container, and when the air bag is pressurized to reduce the volume and rebounds, the liquid in the second container flows into the first container.
Through setting up the gas pocket of first container outside setting and first container inner chamber intercommunication to be connected with the second container through the pipeline, can change and then make the gas pocket volume by big when diminishing at the pressure that the gas pocket receives, with the first container of liquid discharge in the first container and then flow into the second container through the pipeline, perhaps when the pressure that the gas pocket receives changes and then makes the gas pocket volume by little grow, the liquid that will flow into in the second container flows back to the first container through the pipeline. When the first container of liquid discharge in with first container and then flow into the second container through the pipeline, install the flowmeter on the pipeline and can detect flow, and then correspond and explain the gas pocket volume change, reflect the pressure size that the gas pocket receives, because this liquid level detection device installs the water in washing machine contact pail, because of the water level height in the pail leads to the pressure size change that the gas pocket receives, consequently, finally reflect liquid level height in the pail.
Furthermore, a pressing plate is arranged in an inner cavity of the second container, the pressing plate divides the inner cavity of the second container into a first inner cavity and a second inner cavity, the first inner cavity is communicated with the first container, and the second inner cavity is isolated from the first container but communicated with the outside; a spring is arranged between the pressure plate and the second container wall, and the pressure plate can move under the action of liquid and the spring to change the size of the first inner cavity.
When the air bag is pressurized, the liquid in the first container flows into the second container, so that a pressure plate is arranged in the inner cavity of the second container, the pressure plate divides the inner cavity of the second container into a first inner cavity and a second inner cavity, the first inner cavity is communicated with the first container, and the second inner cavity is isolated from the first container but communicated with the outside; thus, when the liquid in the first container flows into the second container, the pressure plate is pushed to move, so that the first inner cavity part is enlarged to contain the liquid; the second inner cavity of the second container is isolated from the first container and communicated with the outside, so that the pressure plate is not subjected to resistance due to air compression when moving.
When the pressure applied to the outside of the air bag is reduced, the liquid flowing into the second container from the first container is pressed back to the first container, so that a power device is required to be arranged in the inner cavity of the second container to provide power to drive the pressing plate to move and compress the part of the first inner cavity.
Furthermore, a spring is arranged in the second inner cavity, and two ends of the spring respectively support against the pressing plate and the wall of the second container barrel opposite to the pressing plate.
In order to facilitate installation and avoid corrosion of the spring, the spring is arranged in the second inner cavity, and two ends of the spring respectively abut against the pressing plate and the second container barrel wall opposite to the pressing plate.
Further, the liquid level detection device further comprises a pressing plate limiting rod, a second inner cavity is formed, a hole is formed in the wall of the second container barrel opposite to the pressing plate, one end of the pressing plate limiting rod is fixedly connected with the pressing plate, the other end of the pressing plate limiting rod penetrates out of the hole, and the spring is sleeved outside the pressing plate limiting rod.
In order to stabilize the pressing plate in the moving process and ensure that the pressing plate does not incline to prevent the liquid in the first inner cavity part from leaking, the liquid level detection device further comprises a pressing plate limiting rod, a hole is formed in the wall of the second container barrel which forms the second inner cavity and is opposite to the pressing plate, one end of the pressing plate limiting rod is fixedly connected with the pressing plate, the other end of the pressing plate limiting rod penetrates out of the hole, and the spring is sleeved outside the pressing plate limiting rod. Through the matching limiting effect of the pressure plate limiting rod and the hole, the pressure plate cannot overturn when moving, so that liquid in the first inner cavity part is prevented from leaking.
Further, the spring is a compression spring.
The spring is a compression spring because it is mounted in the second chamber and the spring is required to generate a force to compress the volume of the first chamber portion.
Furthermore, a spring is arranged in the first inner cavity, and two ends of the spring are respectively connected with the pressing plate and a second container barrel wall opposite to the pressing plate.
In order to enable the pressure plate to be stressed to compress the volume of the first inner cavity part, another scheme can be adopted, namely a spring is arranged in the first inner cavity, and two ends of the spring are respectively connected with the pressure plate and a second container barrel wall opposite to the pressure plate. The spring is here an extension spring.
When the pressure of the liquid in the first interior chamber portion on the pressure plate is reduced, the extension spring retracts from the original extension state, and provides a pulling force to the pressure plate to move the pressure plate, so that the volume of the first interior chamber portion is compressed, and the liquid in the first interior chamber portion is pressed back to the first container.
Further, an air bag is fixed on the top of the first container and communicated with the first container.
In order to ensure that the installation and fixation of the liquid level detection device meet the requirement of compact size of the washing machine, the air bag is fixed at the top of the first container and communicated with the inner cavity of the first container, so that when the liquid level detection device is installed at the bottom of the washing bucket and used for detecting the water level in the washing machine, the air bag positioned at the top of the first container can be in contact with liquid in the washing bucket, and the waste of the whole occupied volume can not be caused.
The invention also provides a washing machine, which is provided with the liquid level detection device, wherein the liquid level detection device is fixed below the washing barrel, and the air bag can be contacted with water at the bottom of the washing barrel.
Because adopt the change of air pocket pressure and then make the liquid flow meter liquid flow thereby know pail water level in, so need can guarantee to detect the most accurate with the water contact of air pocket and pail bottom. Therefore, the liquid level detection device is fixed below the washing bucket, and the air bag can be contacted with water at the bottom of the washing bucket.
Furthermore, a hole is formed in the bottom of the washing tub, the first container is fixedly connected to the lower portion of the washing tub and seals the bottom of the hole, and the air bag is located in the hole.
Through set up the hole in the pail bottom, place the gas package in the hole and the water contact of pail bottom to make the hydroenergy in the pail act on the gas package, the aperture is greater than the gas package maximum diameter. To prevent leakage, the first container is fixedly coupled to a lower portion of the tub and seals a bottom of the aperture.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
The invention discloses a liquid level detection device and a washing machine with the same. The air bag is positioned outside the first container and is communicated with the inner cavity of the first container; the first container is filled with liquid in the inner cavity and is communicated with the second container through a pipeline, and a flowmeter is arranged on the pipeline; the volume change of the air bag is opposite to and related to the volume change of the inner cavity of the second container; when the air bag is pressed to increase and reduce the volume, the liquid in the first container flows into the second container, and when the air bag is pressed to reduce and rebound the volume, the liquid in the second container flows into the first container. Through setting up the gas pocket of first container outside setting and first container inner chamber intercommunication to be connected with the second container through the pipeline, can change and then make the gas pocket volume by big when diminishing at the pressure that the gas pocket receives, with the first container of liquid discharge in the first container and then flow into the second container through the pipeline, perhaps when the pressure that the gas pocket receives changes and then makes the gas pocket volume by little grow, the liquid that will flow into in the second container flows back to the first container through the pipeline. When the liquid in the first container is discharged out of the first container and flows into the second container through the pipeline, the flowmeter arranged on the pipeline can detect the liquid flow, so that the volume change of the air bag is correspondingly explained, and the pressure borne by the air bag is reflected. The invention also provides a washing machine, which is provided with the liquid level detection device, because the liquid level detection device is arranged in the washing machine and contacts with water in a washing barrel, the pressure of an air pocket changes due to the high and low water level in the washing barrel, the liquid flow detected by a flow meter arranged on a pipeline finally reflects the liquid level in the washing barrel, the structure is simple, the installation is simple and convenient, and the liquid level detection device only detects the liquid level and does not participate in other actions of the washing machine, thereby greatly reducing the equipment loss and avoiding the equipment failure possibility caused by participation in unnecessary actions.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of the installation of the liquid level detection unit of the present invention in a washing machine;
FIG. 2 is a schematic view showing a state where a washing tub does not store water according to the liquid level detecting apparatus of the present invention;
FIG. 3 is a schematic view showing a state where a washing tub stores water in the liquid level detection apparatus according to the present invention;
FIG. 4 is a schematic view of the installation of the liquid level detecting device in the second embodiment of the present invention in the washing machine;
fig. 5 is a schematic view of a liquid level detection apparatus according to a second embodiment of the present invention in a state where a wash tub does not store water;
fig. 6 is a schematic view of a state of the liquid level detection apparatus in the second embodiment of the present invention when the wash tub stores water.
In the figure: 1. a washing tub; 2. a first container; 3. a second container; 4. a flow meter; 5. air bags; 6. a second platen; 7. pressing a plate; 8. a spring.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being 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 invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
The invention discloses a liquid level detection device, which is shown in a combined mode in figures 1-3 and comprises a first container 2, an air bag 5, a flow meter 4 and a second container 3.
The air bag 5 is positioned outside the first container 2 and is communicated with the inner cavity of the first container 2; the first container 2 is filled with liquid in the inner cavity and is also communicated with the second container 3 through a pipeline, and a flowmeter 4 is arranged on the pipeline; the volume change of the air bag 5 is opposite to and related to the volume change of the inner cavity of the second container 3; when the air bag 5 is pressed to increase and reduce the volume, the liquid in the first container 2 flows into the second container 3, and when the air bag 5 is pressed to reduce the volume and rebounds, the liquid in the second container 3 flows into the first container 2.
Through setting up the gas bag 5 of 2 outside settings of first container and 2 inner chambers of first container to be connected with second container 3 through the pipeline, can change and then make the gas bag 5 volume by big when diminishing at the pressure that gas bag 5 receives, with the first container 2 of liquid discharge in first container 2 and then flow in second container 3 through the pipeline, perhaps when gas bag 5 receives pressure changes and then makes gas bag 5 volume by little grow, the liquid that will flow in second container 3 passes through the pipeline and flows back to first container 2. When the liquid in the first container 2 is discharged out of the first container 2 and flows into the second container 3 through the pipeline, the flow meter 4 installed on the pipeline can detect the liquid flow, so that the volume change of the air bag 5 is correspondingly explained, and the pressure applied to the air bag 5 is reflected.
In order to ensure that the installation and fixation of the liquid level detection device meet the requirement of compact size of the washing machine, the air bag 5 is fixed at the top of the first container 2, and the air bag 5 is communicated with the inner cavity of the first container 2, so that when the liquid level detection device is installed at the bottom of the washing tub 1 and is used for detecting the water level in the washing machine, the air bag 5 at the top of the first container 2 can be in contact with the liquid in the washing tub 1 and cannot cause waste of the whole occupied volume.
A pressing plate 7 is arranged in the inner cavity of the second container 3, the pressing plate 7 divides the inner cavity of the second container 3 into a first inner cavity and a second inner cavity, the first inner cavity is communicated with the first container 2, and the second inner cavity is isolated from the first container 2 but communicated with the outside; a spring 8 is arranged between the pressure plate 7 and the wall of the second container 3, and the pressure plate 7 can move under the action of liquid and the spring 8 to change the size of a first inner cavity of the second container 3 communicated with the first container 2. In particular to the present structure, a change in volume of the gas pocket that is opposite and correlated to a change in volume of the second container internal cavity means that a change in volume of the gas pocket is opposite and correlated to a change in volume of the second container first internal cavity.
For better sealing, a sealing ring is arranged on the periphery of the pressure plate 7, so that the periphery of the pressure plate 7 is sealed with the wall of the second container 3.
When the volume of the air bag 5 is reduced due to the increase of the external pressure, the liquid in the first container 2 flows into the second container 3, so that the volume of the first inner cavity of the second container which is required to be communicated with the first container 2 can be increased, and the liquid in the first container 2 can push the pressing plate 7 to move when flowing into the second container 3, so that the first inner cavity part of the second container which is communicated with the first container 2 is increased; and the second inner cavity of the second container 3 is isolated from the first container 2 but communicated with the outside, so that the pressing plate 7 is not subjected to resistance due to air compression when moving.
Because the liquid flowing into the second container 3 from the first container 2 needs to be pressed back to the first container 2 when the pressure applied to the outside of the air bag 5 is reduced, a power device needs to be arranged in the inner cavity of the second container 3 to provide power to drive the pressing plate 7 to move and compress the first inner cavity of the second container 3 communicated with the first container 2, and the spring 8 is arranged between the pressing plate 7 and the wall of the second container 3 in the invention, and because the pressure applied to the outside of the air bag 5 is reduced, the pressure applied to the liquid in the first container 2 is reduced, the pressure transmitted to the pressing plate 7 in the second container 3 by the liquid is reduced, so that the pressing plate 7 can move under the action of the spring 8 to reduce the size of the first inner cavity of the second container 3 and press the liquid in the second container 3 into the first container 2.
In order to facilitate installation and avoid corrosion of the spring 8, the spring 8 is arranged in the second inner cavity of the second container 3, and two ends of the spring 8 respectively abut against the pressing plate 7 and the barrel wall of the second container 3 opposite to the pressing plate 7. The spring 8 is here selected as the compression spring 8, since the spring 8 is mounted in the second cavity and the spring 8 needs to generate a force to compress the volume of the first cavity of the second container 3.
As shown in fig. 2 and 3, the liquid level detection device further comprises a pressing plate limiting rod, a hole is formed in the wall of the second container 3, which forms the second inner cavity and is opposite to the pressing plate 7, one end of the pressing plate limiting rod is fixedly connected with the pressing plate 7, the other end of the pressing plate limiting rod penetrates out of the hole, and the spring is sleeved outside the pressing plate limiting rod.
In order to make the clamp plate 7 can be stable at the in-process that removes, guarantee that clamp plate 7 does not incline and prevent to take place to reveal with the liquid in the first inner chamber of the second container 3 of first container 2 intercommunication, liquid level detection device still includes the clamp plate gag lever post, be equipped with the hole on forming the second inner chamber and with the 3 bucket walls of second container relative with clamp plate 7, clamp plate gag lever post one end fixed connection clamp plate 7, the clamp plate gag lever post other end is worn out from the hole, the spring cup joints outside the clamp plate gag lever post. Through the cooperation limiting displacement in clamp plate gag lever post and hole, clamp plate 7 can not take place to overturn when removing to guaranteed not to take place to reveal with the liquid in the first inner chamber of the second container 3 of first container 2 intercommunication.
In other embodiments, in order to make the pressure plate compressed by the acting force, a spring is disposed in the first inner cavity, and two ends of the spring are respectively connected to the pressure plate and a second container barrel wall opposite to the pressure plate. The spring is here an extension spring. When the pressure of the liquid in the first inner cavity on the pressure plate is reduced, the extension spring retracts from the original extension state, and provides pulling force for the pressure plate to move, so that the volume of the first inner cavity is compressed, and the liquid in the first inner cavity is pressed back to the first container.
Example two
The difference between this embodiment and the first embodiment is:
referring to fig. 4-6, a second pressing plate 6 is arranged in the inner cavity of the first container 2, the diameter of the second pressing plate 6 is matched with the inner diameter of the first container 2, and a sealing ring is arranged on the periphery of the second pressing plate 6.
The second pressing plate 6 divides the inner cavity of the first container 2 into two parts, one part of the inner cavity is communicated with the air bag, air is filled in the inner cavity of the part, and the other part of the inner cavity is filled with liquid and is communicated with the second container through a pipeline.
The second pressing plate 6 can move axially along the first container 2, and in order to enable the second pressing plate 6 to move stably, a limiting rod is arranged on one side of the second pressing plate 6 and inserted into a connecting port between the first container 2 and the pipeline.
When the air bag is compressed, air enters the inner cavity of the first container 2, so that the second pressing plate 6 is pushed to move to press liquid in the other part of the inner cavity of the first container 2 to be discharged outwards, and the liquid is discharged to the second container through the pipeline and the flowmeter.
The invention also provides a washing machine, which is provided with any one of the liquid level detection devices, wherein the liquid level detection device is fixed below the washing tub 1, and the air bag 5 can be contacted with water at the bottom of the washing tub 1.
Because the pressure change of the air bag 5 is adopted, the liquid flow is measured, and the water level in the washing tub 1 is obtained, the air bag 5 is required to be in contact with the water at the bottom of the washing tub 1, and the detection can be ensured to be most accurate. Therefore, the liquid level detection device is fixed under the washing tub 1, and the air bag 5 can contact with the water in the bottom of the washing tub 1.
A hole is arranged at the bottom of the washing tub 1, the first container 2 is fixedly connected to the lower part of the washing tub 1 and seals the bottom of the hole, and the air bag 5 is positioned in the hole.
By providing the holes at the bottom of the washing tub 1, the air bag 5 is placed in the holes to contact with the water at the bottom of the washing tub 1, so that the water in the washing tub 1 can act on the air bag 5, and the hole diameter is larger than the maximum diameter of the air bag 5. To prevent leakage, the first container 2 is fixedly coupled to the lower side of the tub 1 and seals the bottom of the aperture.
In the design stage of the washing machine, water is added into the washing tub 1 and the water level height is detected, an air bag 5 of the liquid level detection device is compressed, liquid in the first container 2 flows into the second container 3 after being extruded through the flow meter 4, the flow meter 4 calculates the flow rate, logic calculation is carried out according to the detected water level height of the washing tub 1 and the liquid flow rate of the flow meter 4, fuzzy algorithm and digital modeling are utilized, the water level height in the washing tub 1 corresponds to the liquid flow rate of the flow meter 4, and the corresponding result is filed and written into a computer board control device of the washing machine.
When the washing machine is used by a user, water is added into the washing tub 1, the air bag 5 of the liquid level detection device is compressed under increased pressure, liquid in the first container 2 flows to the second container 3 through the flow meter 4, the computer board control device of the washing machine calculates the corresponding water level height value in the washing tub 1 according to the liquid flow meter 4 flowing through the flow meter 4 through logic calculation, and the water level height value is displayed and transmitted to the user through the display device.
The invention discloses a liquid level detection device and a washing machine with the same. The air bag is positioned outside the first container and is communicated with the inner cavity of the first container; the first container is filled with liquid in the inner cavity and is communicated with the second container through a pipeline, and a flowmeter is arranged on the pipeline; the volume change of the air bag is opposite to and related to the volume change of the inner cavity of the second container; when the air bag is pressed to increase and reduce the volume, the liquid in the first container flows into the second container, and when the air bag is pressed to reduce and rebound the volume, the liquid in the second container flows into the first container. Through setting up the gas pocket of first container outside setting and first container inner chamber intercommunication to be connected with the second container through the pipeline, can change and then make the gas pocket volume by big when diminishing at the pressure that the gas pocket receives, with the first container of liquid discharge in the first container and then flow into the second container through the pipeline, perhaps when the pressure that the gas pocket receives changes and then makes the gas pocket volume by little grow, the liquid that will flow into in the second container flows back to the first container through the pipeline. When the liquid in the first container is discharged out of the first container and flows into the second container through the pipeline, the flowmeter arranged on the pipeline can detect the liquid flow, so that the volume change of the air bag is correspondingly explained, and the pressure borne by the air bag is reflected. The invention also provides a washing machine, which is provided with the liquid level detection device, because the liquid level detection device is arranged in the washing machine and contacts with water in a washing barrel, the pressure of an air pocket changes due to the high and low water level in the washing barrel, the liquid flow detected by a flow meter arranged on a pipeline finally reflects the liquid level in the washing barrel, the structure is simple, the installation is simple and convenient, and the liquid level detection device only detects the liquid level and does not participate in other actions of the washing machine, thereby greatly reducing the equipment loss and avoiding the equipment failure possibility caused by participation in unnecessary actions.
The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in any way, and although the present invention has been disclosed by the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications to the equivalent embodiments by using the technical contents disclosed above without departing from the technical scope of the present invention, and the embodiments in the above embodiments can be further combined or replaced, but any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.
Claims (10)
1. A liquid level detection device characterized in that: comprises a first container, an air bag, a flow meter and a second container,
the air bag is positioned outside the first container and is communicated with the inner cavity of the first container;
the first container is filled with liquid in the inner cavity and is also communicated with the second container through a pipeline, and a flowmeter is arranged on the pipeline;
the volume change of the air bag is opposite to and related to the volume change of the inner cavity of the second container;
when the air bag is pressed to increase and reduce the volume, the liquid in the first container flows into the second container, and when the air bag is pressed to reduce and rebound the volume, the liquid in the second container flows into the first container.
2. The liquid level detecting device according to claim 1, wherein:
the second container is provided with a pressing plate in an inner cavity, the pressing plate divides the inner cavity of the second container into a first inner cavity and a second inner cavity, the first inner cavity is communicated with the first container, and the second inner cavity is isolated from the first container but communicated with the outside;
a spring is arranged between the pressure plate and the second container wall, and the pressure plate can move under the action of liquid and the spring to change the size of the first inner cavity.
3. A liquid level detecting device according to claim 2, wherein: the second pressing plate is arranged in the inner cavity of the first container, the diameter of the second pressing plate is matched with the inner diameter of the first container, the second pressing plate divides the inner cavity of the first container into two parts, one part of the inner cavity is communicated with the air bag, air is filled in the inner cavity of the part, liquid is filled in the inner cavity of the other part of the inner cavity, the inner cavity of the other part is communicated with the second container through a pipeline, and a flowmeter is arranged on the pipeline.
4. A liquid level detection apparatus according to any one of claims 1 to 3, characterized in that: a spring is arranged in the second inner cavity, and two ends of the spring respectively support against the pressing plate and the second container barrel wall opposite to the pressing plate.
5. The liquid level detecting device according to claim 4, wherein: a hole is arranged on the barrel wall of the second container which forms a second inner cavity and is opposite to the pressure plate,
the pressing plate limiting rod is further included, one end of the pressing plate limiting rod is fixedly connected with the pressing plate, the other end of the pressing plate limiting rod penetrates out of the hole, and the spring is sleeved outside the pressing plate limiting rod.
6. The liquid level detecting device according to claim 5, wherein: the spring is a compression spring.
7. A liquid level detection apparatus according to any one of claims 1 to 3, characterized in that: the spring is arranged in the first inner cavity, two ends of the spring are respectively connected with the pressing plate and the second container barrel wall opposite to the pressing plate, and the spring is an extension spring.
8. The liquid level detecting device according to claim 1, wherein: the top of the first container is fixed with an air bag and communicated with the air bag.
9. A washing machine characterized by: the liquid level detecting device according to any one of claims 1 to 8, wherein the liquid level detecting device is fixed under a washing tub, and the air bag is in contact with water in the bottom of the washing tub.
10. The washing machine as claimed in claim 9, wherein: the bottom of the washing tub is provided with a hole, the first container is fixedly connected below the washing tub and seals the bottom of the hole, and the air bag is positioned in the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210171908.3A CN114575110A (en) | 2022-02-24 | 2022-02-24 | Liquid level detection device and washing machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210171908.3A CN114575110A (en) | 2022-02-24 | 2022-02-24 | Liquid level detection device and washing machine with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114575110A true CN114575110A (en) | 2022-06-03 |
Family
ID=81770353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210171908.3A Pending CN114575110A (en) | 2022-02-24 | 2022-02-24 | Liquid level detection device and washing machine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114575110A (en) |
-
2022
- 2022-02-24 CN CN202210171908.3A patent/CN114575110A/en active Pending
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