CN206019786U - Liquid level detection device and electrical equipment - Google Patents
Liquid level detection device and electrical equipment Download PDFInfo
- Publication number
- CN206019786U CN206019786U CN201620977253.9U CN201620977253U CN206019786U CN 206019786 U CN206019786 U CN 206019786U CN 201620977253 U CN201620977253 U CN 201620977253U CN 206019786 U CN206019786 U CN 206019786U
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- metalwork
- liquid level
- carrier
- detection device
- level detection
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Abstract
The utility model discloses a kind of liquid level detection device and electrical equipment, the liquid level detection device includes carrier, capacitive detection circuit and multiple metalworks, there is carrier relative first end and the second end, multiple metalworks to be arranged on carrier, and the first end along carrier is arranged to the second extreme direction spacing；Each metalwork has the installation portion that installs with carrier, and installation portion is tinsel of the diameter less than or equal to 2 millimeters；The installation portion of each metalwork is connected with capacitive detection circuit respectively, and capacitive detection circuit is used for the capacitance signal for detecting each metalwork, and exports corresponding voltage detection signal.The accuracy of this utility model liquid level detection device detection, cleanliness factor and resistance to elevated temperatures are higher.
Description
Technical field
This utility model is related to Technology of Level Detection field, more particularly to a kind of liquid level detection device and electrical equipment.
Background technology
At present, realizing that the mode of Level Detection is mainly contact, i.e. sensor and is contacted with liquid carries out Level Detection, mesh
Front mainly have tongue tube and Hall element.Both modes are required for arranging magnetic floating ball cooperation in container to be detected in fact
Existing, as magnetic floating ball is contacted with liquid in container, for food stage and with heating function electrical equipment (such as Garment Steamer Machine, bean milk
The electrical equipment such as machine, wall-breaking machine, insulating pot and milk brewing machine) Level Detection for, not only not clean hygiene, and testing result can be received
Affect to high temperature, because tongue tube or Hall element are also required to be arranged on the outer wall of container, during heating, heat can be straight
Conduction is connect to tongue tube or Hall element, detection performance is affected.
Utility model content
Main purpose of the present utility model is to provide a kind of liquid level detection device, it is intended to improve the accurate of Level Detection
Degree, cleanliness factor and resistance to elevated temperatures.
For achieving the above object, the utility model proposes a kind of liquid level detection device, the liquid level detection device include carrier,
There is relative first end and the second end, multiple metalworks to arrange for capacitive detection circuit and multiple metalworks, the carrier
On the carrier, and the first end along the carrier is arranged to the second extreme direction spacing；Each metalwork has and institute
The installation portion of carrier installation is stated, the installation portion is tinsel of the diameter less than or equal to 2 millimeters；The peace of each metalwork
Dress portion is connected with the capacitive detection circuit respectively, and the capacitive detection circuit is used for the electric capacity letter for detecting each metalwork
Number, and export corresponding voltage detection signal.
Preferably, the metalwork is metal forming or quoit.
Preferably, the tinsel is spring structure.
Preferably, the metalwork and tinsel one are arranged in spring.
Preferably, on the carrier, the position of corresponding each metalwork is provided with sheet metal, the sheet metal with corresponding
The installation portion connection of metalwork.
Preferably, signal isolation part is provided between metalwork described in adjacent two.
Preferably, the signal connecting line between the installation portion and the capacitive detection circuit of each metalwork is mutually carried out
The anti-tampering setting of signal.
Preferably, the carrier is multilayer circuit board, is provided with the signal connecting line, and any two at least two flaggies
The signal connecting line non-overlapping copies and intersection on flaggy.
This utility model also proposes a kind of electrical equipment, and the electrical equipment includes housing, tank and Level Detection as above
Device, the liquid level detection device include that carrier, capacitive detection circuit and multiple metalworks, the carrier have relative first end
With the second end, multiple metalworks are arranged on the carrier, and along the carrier first end to the second extreme direction spacing
Arrange；Each metalwork has the installation portion that installs with the carrier, and the installation portion is that diameter is less than or equal to 2 millis
The tinsel of rice；The installation portion of each metalwork is connected with the capacitive detection circuit respectively, and the capacitive detection circuit is used
In the capacitance signal for detecting each metalwork, and export corresponding voltage detection signal；The liquid level detection device is arranged on
In the housing, the metalwork of the liquid level detection device is fitted with the outer wall of the container and arranges or close on the container
Outer wall is arranged.
Preferably, the electrical equipment is Garment Steamer Machine/soy bean milk making machine/wall-breaking machine/insulating pot/milk brewing machine.
This utility model detects the capacitance signal of liquid by metalwork, without the need for contacting with liquid, you can detection container
Liquid level, safety clean；And in the present embodiment, metalwork is by being connected with carrier using installation portion, and installation portion is straight
Tinsel of the footpath less than or equal to 2 millimeters, when detecting for high-temperature-hot-water, it is ensured that do not affecting the same of detection signal
When, the heat that metalwork is transferred to carrier is reduced, the impact to carrier and upper carrier part is reduced, so as to improve the standard of detection
True property.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work
Under, other accompanying drawings can be obtained with the structure according to these accompanying drawings.
Structural representations of the Fig. 1 for one embodiment of this utility model liquid level detection device；
Structural representations of the Fig. 2 for another embodiment of this utility model liquid level detection device；
Structural representations of the Fig. 3 for one embodiment of this utility model metalwork and installation portion；
Fig. 4 is the structural representation of this utility model metalwork and another embodiment of installation portion；
Fig. 5 is the structural representation of this utility model metalwork and the another embodiment of installation portion.
Drawing reference numeral explanation：
| Label | Title |
| 10 | Carrier |
| 20 | Capacitive detection circuit |
| 30 | Metalwork |
| 31 | Installation portion |
| 40 | Sheet metal |
The realization of this utility model purpose, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than all
Embodiment.Embodiment in based on this utility model, those of ordinary skill in the art are not paying creative work premise
Lower obtained every other embodiment, belongs to the scope of this utility model protection.
It is to be appreciated that institute's directional instruction (such as up, down, left, right, before and after ...) in this utility model embodiment
It is only used for explaining in the relative position relation under a certain particular pose (as shown in drawings) between each part, motion conditions etc., such as
When really the particular pose changes, then directionality indicates also correspondingly to change therewith.
In addition, the description for being related to " first ", " second " etc. in this utility model is only used for describing purpose, and it is not understood that
For indicating or implying its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ",
The feature of " second " can be expressed or implicitly include at least one this feature.In addition, the technical side between each embodiment
Case can be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme
Will be understood that the combination of this technical scheme is not present when appearance is conflicting or cannot realize, also do not require in this utility model
Protection domain within.
The utility model proposes a kind of liquid level detection device, it is adaptable to the Level Detection of various containers.
In one embodiment, with reference to Fig. 1, the utility model proposes liquid level detection device include carrier 10, capacitance detecting
Circuit 20 and multiple metalworks 30 for detecting liquid capacitance signal.
In the present embodiment, there is carrier 10 relative first end and the second end, multiple metalworks 30 to be arranged at described
On carrier 10, carrier 10 can be circuit board, install electronic component and arrangement circuit to facilitate, it should be noted that the carrier 10
Can be that only metalwork 30 (such as Fig. 1) is set, being so easily installed on the outer wall of container carries out Level Detection, naturally it is also possible to
It is that metalwork 30 is set along on carrier 10 (such as Fig. 2), with cost-effective with capacitive detection circuit 20.Also, multiple metals
Part 30 is arranged to the second extreme direction spacing along the first end of carrier 10, after being installed on container, can detection container diverse location height
The liquid level of degree.In addition, 30 spacing of multiple metalworks is arranged, namely multiple metalworks 30 are relatively independent, do not interfere with each other, can be in container
Inwall has the globule to hang cup and be erroneously detected then, and the size identification according to comparison signal goes out correct liquid level, so as to improve liquid level
The accuracy of detection.
In the present embodiment, the structure of metalwork 30 is not limited, and can be metal forming or quoit, and it is right that these can be realized
The detection of liquid capacitance signal.Wherein, metal forming can be native gold, native silver, aluminium foil or Copper Foil etc., and Copper Foil cost is relatively low, and electricity
Hold characteristic good.Wherein, the shape of the metalwork 30 is not also limited, can rounded, rectangle, polygon etc., in the present embodiment, preferably
For circle, to facilitate setting.
In the present embodiment, each metalwork 30 has the installation portion 31 that installs with the carrier 10, each metal
The installation portion 31 of part 30 is connected with the capacitive detection circuit 20 respectively, and wherein, installation portion 31 is that diameter is less than or equal to 2 millis
The tinsel of rice.Metalwork 30 after the tinsel with the installation of carrier 10 is realized fixing, while the tinsel and the electric capacity
Detection circuit 20 connects, and the liquid electric capacity signal transmission that metalwork 30 is detected is to capacitive detection circuit 20.Need explanation
It is, as installation portion 31 is tinsel of the diameter less than or equal to 2 millimeters, when detecting for high-temperature-hot-water, it is ensured that
While detection signal is not affected, the heat that metalwork 30 is transferred to carrier 10 is reduced, reduced to carrier 10 and carrier 10
The impact of upper-part.It should be appreciated that the shape wiry is not limited, can be linear (as shown in Figure 3), wave
Shape (as shown in Figure 4) or helical spring shape (as shown in Figure 5) etc., the present embodiment are preferably helical spring shape, not only facilitate
Install, in equal space length, effectively increase heat-transfer path, further reduce the transmission of heat.
In the present embodiment, capacitive detection circuit 20 is used for the capacitance signal for detecting each metalwork 30, and exports corresponding
Voltage detection signal.It should be noted that liquid itself has capacitance characteristic, when metalwork 30 is near liquid certain distance
When, capacitance signal will be produced on metalwork 30, the capacitance signal is obtained by capacitive detection circuit 20, through amplification, voltage
After conversion etc. is processed, voltage signal output is generated, container would know that by the capacitance signal of the corresponding metalwork 30 of identification so
Current liquid level.
It is understood that the utility model proposes liquid level detection device by metalwork 30 detect liquid electric capacity letter
Number, without the need for contacting with liquid, you can the liquid level of detection container, safety clean；And in the present embodiment, metalwork 30 passes through
It is connected with carrier 10 using installation portion 31, and installation portion 31 is tinsel of the diameter less than or equal to 2 millimeters, is being used for high temperature
When hot water is detected, it is ensured that while detection signal is not affected, the heat that metalwork 30 is transferred to carrier 10 is reduced, reduced
Impact to 10 upper-part of carrier 10 and carrier, so that improve the accuracy of detection, i.e. this utility model liquid level detection device
Can be resistant to applied at elevated temperature.Additionally, 30 spacing of multiple metalworks is arranged, namely multiple metalworks 30 are relatively independent, do not interfere with each other, can
There is the globule to hang cup and be erroneously detected then in container inner wall, the size identification according to comparison signal goes out correct liquid level, further
Improve the accuracy of Level Detection.
Further illustrate, in above-described embodiment, the metalwork 30 and tinsel one are arranged in spring.Bullet
Spring ensure that the detection of liquid capacitance signal, in equal space length, effectively increase heat-transfer path, reduces container and leads to
Cross metalwork 30 and installation portion 31 is transferred to the heat on carrier 10, reduce the impact to 10 upper-part of carrier 10 and carrier.
Additionally, spring also facilitates to install fixing, it is worth mentioning at this point that, due to the compression of spring, when mounted, it may not be necessary to right
Spring is fixed, and is crimped on the outer wall of container by carrier 10.Certainly this structure, needs to arrange over the carrier 10
Effective contact area, for example, arrange corresponding sheet metal 40, and the sheet metal 40 by welding or can be bonded and fixed to carrier 10
On, certainly, it is preferable that when arranging the sheet metal 40 and being wholely set with the carrier 10, steadiness is higher, and facilitates molding.
Additionally, the sheet metal 40 can also be used for being fixedly connected with the installation portion 31 of corresponding metalwork, convenient fixation.
With reference to Fig. 2, further illustrate, in above-described embodiment, capacitive detection circuit 20 can adopt capacitance detecting chips
U1 realizes that capacitance detecting chips U1 have power end VDD, earth terminal VSS and the multiple signals being connected with power supply VCC
Input water1, water2, water3, water4, waterx etc., for connecting with corresponding metalwork 30, to be input into inspection
Signal is surveyed, capacitance detecting chips are analyzed judgement to the signal for detecting, finally identify tank fill level.Wherein, power end
Between VDD and earth terminal VSS can series filtering electric capacity C1, carry out power filter.
Further illustrate, in above-described embodiment, can further to each metalwork 30 and capacitance detecting electricity
Signal connecting line L1, L2, L3, L4 ... Ln between road 20 mutually carries out the anti-tampering setting of signal.Specifically, can pass through to arrange
Signal screen shield is isolated each signal connecting line, or arranges the signal distance of safety, it is also possible that metalwork 30 and electricity
Either connected as signal connecting line using wire between appearance detection circuit 20, or using arrangement holding wire over the carrier 10
Road connects as signal connecting line, and the signal connecting line between each metalwork 30 and the capacitive detection circuit 20 is mutually not
Intersect.Additionally, when carrier 10 is multilayer circuit board, can respectively arrange metalwork 30 and capacitive detection circuit 20 in different flaggies
Between signal connecting line, meanwhile, the signal connecting line of different layers is also non-cross, and non-overlapping copies, i.e., in any two-ply
On projection of the signal connecting line on the thickness direction of multilayer circuit board do not overlap, also do not intersect, to realize each signal connection
The anti-tampering setting of signal is carried out between line.
This utility model also provides a kind of electrical equipment, and the electrical equipment can be Garment Steamer Machine/soy bean milk making machine/wall-breaking machine/insulating pot/milk brewing machine
Deng specifically, the electrical equipment includes housing, tank and above-mentioned liquid level detection device, and the liquid level detection device is arranged on institute
State in housing, the metalwork of the liquid level detection device is fitted with the outer wall of the container and arranges or close on the outer of the container
Wall is arranged.Wherein, when the outer wall that the carrier of liquid level detection device closes on container is arranged, should ensure that between metalwork and side wall
Distance is less than or equal to 10 millimeters, with the liquid capacitance signal being able to detect that inside container.
It should be noted that employing the whole of all embodiments of above-mentioned liquid level detection device due to this utility model electrical equipment
Technical scheme, then what the technical scheme of this utility model electrical equipment embodiment accordingly with the liquid level detection device was brought own
Beneficial effect, this is no longer going to repeat them.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
Every equivalent structure that under utility model of the present utility model design, is made using this utility model description and accompanying drawing content
Conversion, or directly/be used in indirectly other related technical fields and be included in scope of patent protection of the present utility model.
Claims (10)
1. a kind of liquid level detection device, it is characterised in that including carrier, capacitive detection circuit and multiple metalworks, the carrier
There is relative first end and the second end, multiple metalworks are arranged on the carrier, and the first end along the carrier
Arrange to the second extreme direction spacing；Each metalwork has the installation portion that installs with the carrier, and the installation portion is straight
Tinsel of the footpath less than or equal to 2 millimeters；The installation portion of each metalwork is connected with the capacitive detection circuit respectively, institute
Capacitive detection circuit is stated for detecting the capacitance signal of each metalwork, and exports corresponding voltage detection signal.
2. liquid level detection device as claimed in claim 1, it is characterised in that the metalwork is metal forming or quoit.
3. liquid level detection device as claimed in claim 1, it is characterised in that the tinsel is spring structure.
4. liquid level detection device as claimed in claim 1, it is characterised in that the metalwork and tinsel one are in bullet
Spring is arranged.
5. liquid level detection device as claimed in claim 1, it is characterised in that the position of corresponding each metalwork on the carrier
Install and be equipped with sheet metal, the sheet metal is connected with the installation portion of corresponding metalwork.
6. liquid level detection device as claimed in claim 1, it is characterised in that be provided with signal between metalwork described in adjacent two
Separator.
7. liquid level detection device as claimed in claim 1, it is characterised in that the installation portion of each metalwork and the electric capacity
Signal connecting line between detection circuit mutually carries out the anti-tampering setting of signal.
8. liquid level detection device as claimed in claim 7, it is characterised in that the carrier is multilayer circuit board, at least two plates
The signal connecting line non-overlapping copies and the intersection being provided with layer on the signal connecting line, and any two flaggy.
9. a kind of electrical equipment, it is characterised in that the liquid level inspection including housing, tank and as described in any one of claim 1 to 8
Device is surveyed, the liquid level detection device is arranged in the housing, the metalwork of the liquid level detection device and the container
Outer wall laminating arranges or closes on the outer wall of the container and arranges.
10. electrical equipment as claimed in claim 9, it is characterised in that the electrical equipment is Garment Steamer Machine/soy bean milk making machine/wall-breaking machine/electricity water
Kettle/milk brewing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620977253.9U CN206019786U (en) | 2016-08-29 | 2016-08-29 | Liquid level detection device and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620977253.9U CN206019786U (en) | 2016-08-29 | 2016-08-29 | Liquid level detection device and electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206019786U true CN206019786U (en) | 2017-03-15 |
Family
ID=58254598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620977253.9U Active CN206019786U (en) | 2016-08-29 | 2016-08-29 | Liquid level detection device and electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206019786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782409A (en) * | 2016-08-29 | 2018-03-09 | 佛山市顺德区美的电热电器制造有限公司 | Liquid level detection device and electrical equipment |
-
2016
- 2016-08-29 CN CN201620977253.9U patent/CN206019786U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782409A (en) * | 2016-08-29 | 2018-03-09 | 佛山市顺德区美的电热电器制造有限公司 | Liquid level detection device and electrical equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |