CN109645824B - Liquid level detection device and water dispenser with same - Google Patents
Liquid level detection device and water dispenser with same Download PDFInfo
- Publication number
- CN109645824B CN109645824B CN201710948287.4A CN201710948287A CN109645824B CN 109645824 B CN109645824 B CN 109645824B CN 201710948287 A CN201710948287 A CN 201710948287A CN 109645824 B CN109645824 B CN 109645824B
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- water
- piece
- pressure
- gas
- gas storage
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 139
- 238000001514 detection method Methods 0.000 title claims abstract description 68
- 239000007788 liquid Substances 0.000 title claims abstract description 41
- 230000009471 action Effects 0.000 claims abstract description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 12
- 229910052710 silicon Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 230000008054 signal transmission Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/4403—Constructional details
- A47J31/4457—Water-level indicators
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J31/00—Apparatus for making beverages
- A47J31/44—Parts or details or accessories of beverage-making apparatus
- A47J31/58—Safety devices
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses a liquid level detection device and a water dispenser with the same, wherein the liquid level detection device comprises: the gas storage piece is internally provided with a gas cavity; the pressure detection piece, the pressure detection piece with the gas storage piece links to each other, the pressure detection piece includes the film, the outside of film with the gas storage piece intercommunication, just the film is suitable for being out of shape and changes into electric signal output under the effect of measured liquid pressure. According to the liquid level detection device, the accurate detection of the water level in the water storage tank can be realized by connecting the pressure detection piece with the gas storage piece, and the liquid level detection device is convenient to operate and good in usability; in addition, the deformation of the film under the action of the measured liquid pressure is converted into an electric signal to be output, so that the accuracy of water level detection is further improved.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a liquid level detection device and a water dispenser with the same.
Background
In the related art, as the bucket of the underneath type water dispenser is arranged in an opaque storage cabinet, whether water exists in the bucket is not easy to be visualized, and a perfect detection method for detecting the residual water quantity in the bucket is not available all the time, so that the usability is poor.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a liquid level detection device which has a simple structure and high detection accuracy.
The invention also provides a water dispenser, and the water dispenser is provided with the liquid level detection device.
According to an embodiment of the first aspect of the present invention, a liquid level detection apparatus includes: the gas storage piece is internally provided with a gas cavity; the pressure detection piece, the pressure detection piece with the gas storage piece links to each other, the pressure detection piece includes the film, the outside of film with the gas storage piece intercommunication, just the film is suitable for being out of shape and changes into electric signal output under the effect of measured liquid pressure.
According to the liquid level detection device provided by the embodiment of the invention, the accurate detection of the water level in the water storage tank can be realized by connecting the pressure detection piece with the gas storage piece, so that the operation is convenient and the usability is good; in addition, the deformation of the film under the action of the measured liquid pressure is converted into an electric signal to be output, so that the accuracy of water level detection is further improved.
In addition, the liquid level detection device according to the above embodiment of the present invention has the following additional technical features:
According to an embodiment of the present invention, the pressure detecting member is a micro pressure sensor including: the gas storage device comprises a body, wherein a gas channel is arranged in the body, a silicon wafer is arranged at the inner end of the gas channel, the silicon wafer is partially constructed relative to the gas channel to form the film, the gas storage piece is connected with the body and communicated with the gas channel, and the silicon wafer is sunken to form a cavity communicated with the gas channel.
According to one embodiment of the invention, the gas storage member is tubular, with one end open and the other end closed by the pressure detecting member.
Further, the gas storage piece is a hose or a metal pipe.
Optionally, the air storage member is in a long strip shape extending along a straight line.
Further, the gas storage piece is detachably and hermetically connected with the body, and is spliced or sleeved with the body.
A water dispenser according to an embodiment of the second aspect of the present invention includes: the machine body is provided with a containing cavity at the lower part, and the containing cavity is used for storing the water storage tank; the liquid level detection device is arranged on the machine body, the liquid level detection device is the liquid level detection device, and the gas storage piece is suitable for extending downwards into the water storage tank; the controller is in signal transmission with the pressure detection piece; and the display piece is in signal transmission with the controller.
Further, the gas storage member is adapted to extend to a position adjacent to the bottom wall of the receiving chamber.
Specifically, the water dispenser further comprises an upper cover for sealing an opening at the upper end of the water storage tank, and the upper cover is connected with the air storage piece.
Optionally, the display piece comprises at least one of a display panel, a color indicator light and a buzzer.
Further, the pressure detecting member is integrated with the controller, the display member, and the buzzer.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention 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 a schematic view of a liquid level detection apparatus according to an embodiment of the present invention;
fig. 2 is a schematic view of a pressure detecting member in the liquid level detecting device according to the embodiment of the present invention.
Reference numerals: the liquid level detecting device 100, the gas storage part 1, the gas cavity 11, the pressure detecting part 2, the body 21, the gas channel 211, the water storage tank 210, the controller 220, the display part 230, the upper cover 240 and the buzzer 250.
Detailed Description
Embodiments of the present invention 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 and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured 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 explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the related art, the underneath type water dispenser mostly adopts one of the following modes to detect the water quantity remained in the water barrel: firstly, the floating ball type reed switch is utilized and is inserted into the bottom of the water bucket through a water pipe with proper length, however, the scheme can only detect one water level, the lowest water level is greatly different due to structural influence (such as the height of the water bucket), the waste of water is caused, and meanwhile, the height of the residual water in the water bucket cannot be reflected in real time. Secondly, by means of combined control of the time and the liquid level sensor, when the water level in the other water storage tank of the water dispenser does not reach the set water level after the water pump continuously works for a period of time, the water barrel is judged to be free of water, however, in the method, the water pump can be empty for a period of time, the service life of the water pump is greatly influenced except noise, if water is continuously used by people during water pumping, the water level in the water storage tank can not reach the designed water level all the time, and misjudgment is caused.
Therefore, the liquid level detection device 100 provided by the invention can accurately detect the water quantity remained in the water bucket, and has good usability.
A liquid level detection apparatus 100 according to an embodiment of the first aspect of the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1 to 2, a liquid level detection apparatus 100 according to an embodiment of the present invention includes: a gas storage member 1 and a pressure detection member 2.
Specifically, the gas storage member 1 has a gas chamber 11 therein, and the gas storage member 1 is adapted to deform under the action of external hydraulic pressure. For example, the gas storage member 1 is capable of being deformed by the pressure of an external liquid, which may be water or the like.
The pressure detecting member 2 is connected to the gas storage member 1. The pressure detection member 2 can detect the air pressure in the air storage member 1 to a certain degree, and can further detect the amount of water remaining in the water storage tank 210.
The pressure detecting member 2 is in sealing connection with the air storage member 1, the pressure of the water in the water storage tank 210 is transmitted to the pressure detecting member 2 through the air storage member 1, the pressure of the air sealed in the air storage member 1 is equal to the pressure of the water in the water storage tank 210, and the pressure of the water and the height of the water are in a proportional relationship, so that the accurate detection of the water level in the water storage tank 210 can be realized by connecting the pressure detecting member 2 with the air storage member 1, and the operation is convenient.
Specifically, the pressure detecting member 2 includes a film, the outer side of which communicates with the gas storage member 1, for example, the inner side of the gas storage member 1 may be provided with the film, at least a portion of the gas storage member 1 may be sleeved on the outer side of the film, or the like; and the membrane is adapted to deform under the pressure of the liquid being measured and to convert it into an electrical signal for output. Therefore, the deformation of the film under the action of pressure is beneficial to more sensitively detecting the pressure change, so that the precision and accuracy of pressure detection are improved.
According to the liquid level detection device 100 provided by the embodiment of the invention, the accurate detection of the water level in the water storage tank 210 can be realized by connecting the pressure detection piece 2 with the air storage piece 1, so that the operation is convenient and the usability is good; in addition, the deformation of the film under the action of the measured liquid pressure is converted into an electric signal to be output, so that the accuracy of water level detection is further improved.
According to some embodiments of the present invention, the pressure detecting member 2 is a micro-pressure sensor, which is advantageous for improving the sensitivity of liquid level detection.
Specifically, the micropressure sensor includes: the body 21 has a gas channel 211 in the body 21, and a silicon wafer is provided at an inner end of the gas channel 211, for example, the silicon wafer may be provided at a top end inside the gas channel 211, or the like. The portion of the silicon wafer opposite to the gas channel 211 is constructed as a thin film, that is, the portion of the silicon wafer opposite to the gas channel 211 in the up-down direction may be constructed as the thin film.
Wherein the gas storage member 1 is connected to the body 21, and the gas storage member 1 may communicate with the gas channel 211, and a silicon wafer recess (e.g., a lower surface of a silicon wafer is recessed upward, etc.) forms a cavity communicating with the gas channel 211. Therefore, in the actual use process of the liquid level detection device 100, a certain air flow buffering effect is facilitated through the cavity, so that the deformation of the film is more accurate, and the accuracy of pressure detection is improved.
Referring to fig. 1, according to an embodiment of the present invention, a gas storage member 1 is tubular, one end of the gas storage member 1 is open and the other end is closed by a pressure detecting member 2. For example, the lower end of the gas storage member 1 is opened, and the upper end of the gas storage member 1 may be closed by the pressure detecting member 2. In the specific use process of the liquid level detection device 100, a closed gas cavity 11 is formed in the gas storage piece 1, and the accuracy of water level detection is ensured.
The present invention is not limited thereto, and the air storage member 1 may be a hose. For example, the air storage member 1 may be a rubber hose or the like. Therefore, the air storage piece 1 can be not influenced by the height difference of the water storage tanks 210, and is suitable for the water storage tanks 210 with various height specifications. Of course, the gas storage member 1 may be a metal pipe or the like.
Alternatively, with reference to fig. 1, the air storage member 1 has a long strip shape extending along a straight line. For example, the gas storage member 1 is a long straight tube shape extending in a straight line, or the like. Thus, the installation of the gas storage piece 1 is facilitated, and the detection accuracy is guaranteed.
The gas channel 211 in which the gas storage member 1 is hermetically connected to the body 21, and the gas storage member 1 communicates with the other end of the gas channel 211. For example, the gas storage member 1 communicates with the lower end of the gas passage 211. Thus, the tightness of the gas chamber 11 can be ensured, which is advantageous for improving the accuracy of water level detection.
Further, referring to fig. 1 and 2, the air storage member 1 is detachably and hermetically connected to the body 21, and the air storage member 1 is inserted into or coupled to the body 21. The air storage member 1 is convenient to mount and dismount from the body 21, and the accuracy of water level detection is improved.
For example, the body 21 may be an interference fit with the air reservoir 1. In addition, a seal may be provided between the body 21 and the gas storage member 1. This can further ensure the tightness of the gas chamber 11 and improve the accuracy of water level detection.
A water dispenser (not shown) according to an embodiment of the second aspect of the present invention includes: the machine body, the liquid level detection device, the controller 220 and the display 230.
Specifically, the lower part of the body is provided with a containing cavity for storing the water storage tank 210; the liquid level detection device is arranged on the machine body, the liquid level detection device is the liquid level detection device 100, and the gas storage piece 1 is suitable for extending downwards into the water storage tank 210 (for example, the height of the water storage tank 210 can be within 600 mm); the controller 220 is in signal transmission with the pressure detecting piece 2; the display 230 is in signal communication with the controller 220. Thus, by providing the liquid level detection apparatus 100 of the above-described first embodiment on the water dispenser, the amount of water remaining in the water storage tank 210 can be accurately detected, and the pressure signal detected by the pressure detecting member 2 can be processed by the controller 220 and displayed by the display member 230, so that the water level in the water storage tank 210 can be intuitively displayed.
Further, with reference to fig. 1, the gas storage member 1 is adapted to extend to a position adjacent to the bottom wall of the receiving chamber. For example, the air storage member 1 is adapted to extend to a position adjacent to the bottom wall of the water storage tank 210. Thus, the accuracy of detection can be ensured.
Specifically, the water dispenser further includes an upper cover 240, the upper cover 240 may be used to cover an opening of the upper end of the water storage tank 210, and the upper cover 240 is connected to the air container 1. For example, the upper cover 240 may be formed with a mounting hole adapted to pass through the air storage member 1, and the upper cover 240 is connected to the air storage member 1 through the mounting hole. One end of the air container 1 is conveniently fixed by the upper cover 240.
The pressure detecting member 2 abuts against the upper cover 240 of the water storage tank 210. The upper cover 240 can provide stable support for the pressure detecting member 2, and the accuracy of detection is ensured.
Of course, the pressure detecting member 2 may be spaced apart from the upper cover 240 of the water storage tank 210 without affecting the accuracy of detection.
Alternatively, referring to fig. 1, the display 230 may include at least one of a display panel, a color indicator lamp, and a buzzer 250. Thus, by selecting the display 230 in a different form, it is convenient for the user to intuitively observe information corresponding to the water level in the water storage tank 210.
For example, the display 230 may display information corresponding to the amount of water in the water storage tank 210 in at least one of a number, an indicator, or a pattern.
The display member 230 may further include a buzzer 250, the buzzer 250 is in signal transmission with the controller 220, and the controller 220 is respectively connected with the pressure detecting member 2, the buzzer 250 and the display member 230 through transmission lines. Thus, it is convenient to remind the user of changing water and controlling the water pump to stop pumping operation with sound and light when water in the water storage tank 210 is not present.
Further, the pressure detecting member 2 may be integrated with the controller 220, the display member 230, and the buzzer 250. Therefore, the length of the connecting wire is shortened, the connecting wire is convenient, and the structure of the water dispenser is more compact.
The operation of the water dispenser according to the embodiment of the present invention is described in detail with reference to fig. 1 to 2.
Specifically, the pressure of the water in the water storage tank 210 is detected by the pressure detecting member 2, and is processed by the controller 220 such as an MCU (Micro Control Unit ), and controlled by the electric control board, the height of the water in the water storage tank 210 is displayed on the display screen, and the user is reminded of changing the water and controlling the water pump to stop pumping operation by using sound and light when no water exists.
The air pipe (the air pipe can be a hose, the length is longer, is crooked form in storage water tank 210, is suitable for the storage water tank 210 of co-altitude) and body 21 between be sealed state, the air pipe inserts storage water tank 210 bottom, and the pressure of water is passed through the air pipe and is given pressure detection spare 2, and sealed gas pressure equals the pressure of water in storage water tank 210 in the air pipe, and pressure detection spare 2 gives the controller 220 such as automatically controlled board etc. with the pressure value that surveys, passes through the transmission line after handling through automatically controlled board MCU and gives the display panel, and the display panel shows the water level state with digit or different colours pilot lamp or other pattern. When the water level in the water storage tank 210 changes, the pressure of the air pipe changes along with the change, when the water level is reduced to the lowest position of the air pipe, the pressure detection part 2 detects no pressure, the electric control board sends out a signal, the buzzer 250 sounds to prompt that the water storage tank 210 is free of water, and the display board displays the corresponding state.
According to the water dispenser provided by the embodiment of the invention, the water level in the water storage tank 210 of the underlying water dispenser is accurately monitored by using the high-precision micro-pressure sensor, water pumping is stopped and a user is reminded to replace the water storage tank 210 when no water exists, the residual water in the water storage tank 210 can be displayed in real time by using the display screen, the user is reminded to replace the water storage tank 210 by sound and light, meanwhile, the water storage tank 210 is connected by the air storage piece 1 such as a hose and the like, and a longer hose is used, so that the water dispenser is not influenced by the height difference of the water storage tank 210 and is suitable for the water storage tanks 210 with various height specifications. The working process of the water dispenser according to the embodiment of the invention is finished.
Other constructions and operations of the water dispenser according to the embodiments of the present invention are known to those of ordinary skill in the art, and will not be described in detail herein.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (7)
1.A water dispenser, comprising:
the machine body is provided with a containing cavity at the lower part, and the containing cavity is used for storing the water storage tank;
the liquid level detection device is arranged on the machine body, and the gas storage piece is suitable for extending downwards into the water storage tank;
The controller is in signal transmission with the pressure detection piece;
the display piece is in signal transmission with the controller, the gas storage piece is suitable for extending to a position adjacent to the bottom wall of the containing cavity, the water dispenser further comprises an upper cover for sealing an opening at the upper end of the water storage tank, the upper cover is connected with the gas storage piece, and the pressure detection piece is stopped against the upper cover of the water storage tank; the liquid level detection device includes:
The gas storage piece is internally provided with a gas cavity;
the pressure detection piece is connected with the gas storage piece and comprises a film, the outer side of the film is communicated with the gas storage piece, and the film is suitable for being deformed under the action of the pressure of the detected liquid and converted into an electric signal for output; the pressure detection piece is a micro-pressure sensor, the micro-pressure sensor includes:
The body is internally provided with a gas channel, the inner end of the gas channel is provided with a silicon wafer, the part of the silicon wafer corresponding to the gas channel constructs the film,
The silicon wafer is sunken to form a cavity communicated with the gas channel.
2. The water dispenser as claimed in claim 1, wherein the air storage member is tubular, one end of the air storage member is opened and the other end is closed by the pressure detecting member.
3. The water dispenser of claim 2 wherein the air reservoir is a hose or a metal tube.
4. The water dispenser as claimed in claim 3, wherein the air storage member is in a long strip shape extending along a straight line.
5. The water dispenser according to claim 1, wherein the gas storage member is detachably and hermetically connected to the body, and the gas storage member is inserted into or sleeved with the body.
6. The water dispenser of any one of claims 1-5, wherein the display comprises at least one of a display panel, a color indicator light, and a buzzer.
7. The water dispenser of claim 6, wherein the pressure sensing member is integrated with the controller, the display member, and the buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710948287.4A CN109645824B (en) | 2017-10-12 | 2017-10-12 | Liquid level detection device and water dispenser with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710948287.4A CN109645824B (en) | 2017-10-12 | 2017-10-12 | Liquid level detection device and water dispenser with same |
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| Publication Number | Publication Date |
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| CN109645824A CN109645824A (en) | 2019-04-19 |
| CN109645824B true CN109645824B (en) | 2024-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710948287.4A Active CN109645824B (en) | 2017-10-12 | 2017-10-12 | Liquid level detection device and water dispenser with same |
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| CN (1) | CN109645824B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR980008289A (en) * | 1996-07-29 | 1998-04-30 | 김광호 | Water level indicator of under-sink water purifier |
| CN106802176A (en) * | 2015-11-26 | 2017-06-06 | 中国科学院电子学研究所 | A kind of water level detecting system |
| CN208625369U (en) * | 2017-10-12 | 2019-03-22 | 佛山市顺德区美的饮水机制造有限公司 | Liquid level detection device and water dispenser with it |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4625553A (en) * | 1985-04-12 | 1986-12-02 | Dresser Industries, Inc. | System to determine the level and weight of liquid in a tank or the like |
| GB8618276D0 (en) * | 1986-07-26 | 1986-09-03 | Bass Plc | Measuring level of beverage in keg |
| FR2755234B1 (en) * | 1996-10-30 | 1998-12-18 | Seb Sa | DEVICE FOR DETECTING THE WATER LEVEL IN AN ELECTRIC HEATER |
| CN2315581Y (en) * | 1997-10-27 | 1999-04-21 | 中国科学院南京土壤研究所 | Waste water treating pot for waste water treating equipment |
| FR2772917B1 (en) * | 1997-12-23 | 2000-06-30 | Jean Yves Delattre | THE PRESENT INVENTION CONCERNS A SENSOR FOR THE DETECTION OF A LIQUID LEVEL AS WELL AS A LIQUID SUPPLY INSTALLATION OF A TANK USING THIS SENSOR |
| CN201637156U (en) * | 2009-12-30 | 2010-11-17 | 山东桑乐太阳能有限公司 | Liquid level sensor of solar water heating system |
| CN105676902B (en) * | 2016-03-15 | 2019-11-26 | 广州达意隆包装机械股份有限公司 | The adjusting method and device of water butt internal pressure |
| CN106219619A (en) * | 2016-07-25 | 2016-12-14 | 浙江沁园水处理科技有限公司 | There is purifier and the Real-time Water level monitoring system thereof of real time water level monitoring function |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR980008289A (en) * | 1996-07-29 | 1998-04-30 | 김광호 | Water level indicator of under-sink water purifier |
| CN106802176A (en) * | 2015-11-26 | 2017-06-06 | 中国科学院电子学研究所 | A kind of water level detecting system |
| CN208625369U (en) * | 2017-10-12 | 2019-03-22 | 佛山市顺德区美的饮水机制造有限公司 | Liquid level detection device and water dispenser with it |
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| CN109645824A (en) | 2019-04-19 |
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