CN209310853U - It is a kind of for detecting the compound sensor of liquid - Google Patents
It is a kind of for detecting the compound sensor of liquid Download PDFInfo
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- CN209310853U CN209310853U CN201920278904.9U CN201920278904U CN209310853U CN 209310853 U CN209310853 U CN 209310853U CN 201920278904 U CN201920278904 U CN 201920278904U CN 209310853 U CN209310853 U CN 209310853U
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- circuit board
- box body
- detecting
- sensor
- conducting bar
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Abstract
The utility model discloses a kind of for detecting the compound sensor of liquid, including box body, the tray interior is hollow structure, and the box body is cuboid sealing structure open at one end, the tray interior is box chamber, it is each provided with a positioning conducting bar on two symmetrical sides of the box chamber, is provided with circuit board below the positioning conducting bar of the tray interior；At least one temperature sensor is installed on the circuit board, liquid level sensor is installed on the circuit board, the circuit board back is provided with copper sheet.Beneficial effect is: by the way that temperature sensor and liquid level sensor is integrally disposed, while detecting water temperature to whether be located at underwater judge, pass through while aqueous position and water temperature parameters detect and feed back, improve water temperature detection accuracy；Liquid level and water temperature are carried out while being detected simultaneously, timely power-off protection can be carried out in heater dry combustion method by the feedback of composite signal convenient for controller, improve safety.
Description
Technical field
The utility model relates to liquid sensor technical fields, and in particular to a kind of for detecting the composite sensing of liquid
Device.
Background technique
Existing water heater when in use, needs to detect the water temperature inside container using temperature sensor, existing
Some water heaters have the following problems: temperature sensor is only capable of detecting its outside environment, due to can not be to sensor
Whether judged below liquid level, be on the one hand difficult to ensure that the temperature detected is that water temperature or air themperature are judged,
Influence water temperature detection accuracy.On the other hand it is easy the heater dry combustion method when water level is lower, causes safety accident.
Utility model content
The purpose of this utility model is that solve the above-mentioned problems and provides a kind of for detecting the compound biography of liquid
Sensor, in many technical solutions provided by the utility model preferred technical solution include can by by temperature detector and
Liquid level detector becomes one, and while detecting water temperature, judges water level, to prevent heater dry combustion method, improves
The technical effects such as the safety that water heater uses, elaboration as detailed below.
To achieve the above object, the utility model provides following technical scheme:
It is provided by the utility model a kind of for detecting the compound sensor of liquid, including box body, during which is
Hollow structure, and the box body is cuboid sealing structure open at one end, the tray interior is box chamber, and the two of the box chamber are symmetrical
It is each provided with a positioning conducting bar on side wall, is provided with circuit board below the positioning conducting bar of the tray interior；
At least one temperature sensor is installed on the circuit board, liquid level sensor, institute are installed on the circuit board
It states circuit board back and is provided with copper sheet, which is electrically connected with the liquid level sensor, and the circuit board is opened towards the box body
The spacing at the one end Kou Chu and opening edge is not less than the wall thickness of the box body；
The tray interior is sealed filling using heat-conduction epoxy resin.
Preferably, be provided with 2 temperature sensors on the circuit board, and 2 temperature sensors be located at it is described
The two sides of liquid level sensor.
Preferably, the box body and the positioning conducting bar are integrally formed for thermoplastic resin.
Preferably, the contact surface of two sides and the positioning conducting bar is evenly arranged with rubber salient point at the top of the circuit board,
And rubber salient point tip and circuit board bottom spacing are greater than the positioning conducting bar bottom and cavity bottom surface spacing.
Preferably, the copper sheet is brass, and the copper sheet is adhesively fixed with the circuit board bottom.
Preferably, the temperature sensor is resistance and temperature linearly relevant thermistor element.
Preferably, the contact surface of the copper sheet and the circuit board is provided with felt pad, and four side of the copper sheet and institute
It states and is sealed between circuit board bottom surface using heat-conducting silicone grease.
To sum up, the utility model has the beneficial effects that: 1, by the way that temperature sensor and liquid level sensor is integrally disposed,
To whether being located at underwater and judge while detecting water temperature, by being detected while aqueous position and water temperature parameters and anti-
Feedback improves the accuracy of water temperature detection；
2, liquid level and water temperature are carried out while is detected simultaneously, can heated by the feedback of composite signal convenient for controller
Timely power-off protection is carried out when device dry combustion method, improves safety.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the utility model box body；
Fig. 3 is the overlooking structure diagram of the utility model circuit board；
Fig. 4 is the back structures schematic diagram of the utility model circuit board；
Fig. 5 is the electrical block diagram of the utility model liquid level sensor.
The reference numerals are as follows:
1, box body；2, box chamber；3, conducting bar is positioned；4, circuit board；401, plate body；402, temperature sensor；403, liquid level passes
Sensor；404, rubber salient point；405, copper sheet.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Shown in referring to figures 1-4, the utility model provides a kind of for detecting the compound sensor of liquid, including box body
1, it is hollow structure inside the box body 1, and the box body 1 is cuboid sealing structure open at one end, is box chamber 2 inside box body 1,
It is each provided with a positioning conducting bar 3 on two symmetrical sides of box chamber 2, is provided with circuit board below the positioning conducting bar 3 inside box body 1
4, it is formed between self-positioning 3 bottom surface of conducting bar of circuit board 4 and the bottom surface of box chamber 2 to guide rail interior and is inserted into, until 4 end of circuit board
Connect with the inner sidewall of box chamber 2, pouring sealing can be carried out；
At least one temperature sensor 5 is installed on circuit board 4, liquid level sensor 6, circuit board 4 are installed on circuit board 4
Back is provided with copper sheet 8, which is electrically connected with liquid level sensor 6, and 8 bottom surface of copper sheet is adjacent to 1 inner wall of box body, can be used for detecting
Capacitor physical quantity outside box body 1, and the liquid level detector by being connected electrically generates external liquid level signal, to carry out
Level sensing outside box body 1, circuit board 4 are not less than box body 1 towards the spacing at 1 opening one end of box body and opening edge
Wall thickness, so set, filling heat-conduction epoxy resin sealing when, can the opening to box body 1 closely sealed, and
The structural strength of opening sealing is provided；
Wherein, 6 structure of liquid level sensor such as Fig. 5, U1 are that capacitor compares component, and CS foot is connected to Touch i.e. copper sheet 8,
For incuding the capacitor of 1 outside of box body, what CR foot connect is to compare capacitor, when the capacity ratio CR foot that CS is detected is big, OUT foot
Low level is exported, high level is otherwise exported.The capacity ratio air of liquid is big, so can be sentenced by the capacitor for comparing Touch
Disconnected etui is to be exported by the level signal of OUT foot, in liquid or in air to complete level sensing process；
Filling using heat-conduction epoxy resin sealing inside box body 1, heat-conduction epoxy resin thermal conductivity is good, and temperature sensing can be improved
The sensitivity of device 5.
As optional embodiment, 2 temperature sensors 5 are provided on circuit board 4, and 2 temperature sensors 5 are distinguished
Positioned at the two sides of liquid level sensor 6, the temperature sensor 5 for being respectively in 6 two sides of liquid level sensor is used to carry out extraneous water temperature
Detection can increase thermometric spacing by being arranged on 6 two sides of liquid level sensor, can be by two after feedback temperature monitoring signals
The data comparison of group temperature signal, calculates external accurate temperature；
Box body 1 and positioning conducting bar 3 are integrally formed for thermoplastic resin, so set, positioning conducting bar 3 and box can be improved
The structural strength of body 1；
The contact surface of 4 top two sides of circuit board and positioning conducting bar 3 is evenly arranged with rubber salient point 7, and 7 tip of rubber salient point
It is greater than positioning 3 bottom of conducting bar and 2 bottom surface spacing of box chamber with 4 bottom spacing of circuit board, after circuit board 4 is inserted into 1 inside of box body, rubber
Salient point 7 is held out against with positioning 3 bottom surface of conducting bar, so that 4 bottom surface of circuit board is pressed on 2 bottom of box chamber, improves circuit board 4 and box chamber 2
Bottom contacts and density, and the stability that circuit board 4 is installed is improved, it prevents from being subjected to displacement when heat-conduction epoxy resin is filling；
Copper sheet 8 is brass, and copper sheet 8 is adhesively fixed with 4 bottom of circuit board, so set, copper sheet 8 and circuit board can be improved
The stability of 4 bottoms contact；
Temperature sensor 5 is resistance and temperature linearly relevant thermistor element；
The contact surface of copper sheet 8 and circuit board 4 is provided with felt pad, and uses between 4 bottom surface of 8 four side of copper sheet and circuit board
Heat-conducting silicone grease sealing, so set, the insulation performance between copper sheet 8 and circuit board 4 can be improved.
By the way that temperature sensor 5 and liquid level sensor 6 is integrally disposed, to whether positioned at the water surface while detecting water temperature
Under judged, pass through while aqueous position and water temperature parameters detect and feed back, improve water temperature detection accuracy；
Liquid level and water temperature are carried out while being detected simultaneously, it can be by the feedback of composite signal, convenient for controller in heater
Timely power-off protection is carried out when dry combustion method, improves safety.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (7)
1. a kind of for detecting the compound sensor of liquid, it is characterised in that: including box body (1), which is during inside is
Hollow structure, and the cuboid sealing structure that the box body (1) is open at one end, the internal box body (1) is box chamber (2), the box chamber
(2) a positioning conducting bar (3), the internal positioning conducting bar (3) lower section of the box body (1) are each provided on two symmetrical sides
It is provided with circuit board (4)；
At least one temperature sensor (5) is installed on the circuit board (4), level sensing is installed on the circuit board (4)
Device (6), circuit board (4) back are provided with copper sheet (8), which is electrically connected with the liquid level sensor (6), described
Circuit board (4) is not less than the wall thickness of the box body (1) towards the spacing at the box body (1) opening one end and opening edge；
It is filling using heat-conduction epoxy resin sealing inside the box body (1).
2. a kind of for detecting the compound sensor of liquid according to claim 1, it is characterised in that: the circuit board (4)
On be provided with 2 temperature sensors (5), and 2 temperature sensors (5) are located at the two sides of the liquid level sensor (6).
3. a kind of for detecting the compound sensor of liquid according to claim 1, it is characterised in that: the box body (1) with
The positioning conducting bar (3) is integrally formed for thermoplastic resin.
4. a kind of for detecting the compound sensor of liquid according to claim 1, it is characterised in that: the circuit board (4)
The contact surface of top two sides and positioning conducting bar (3) is evenly arranged with rubber salient point (7), and the rubber salient point (7) tip
It is greater than the positioning conducting bar (3) bottom and box chamber (2) bottom surface spacing with the circuit board (4) bottom spacing.
5. a kind of for detecting the compound sensor of liquid according to claim 1, it is characterised in that: the copper sheet (8) is
Brass, and the copper sheet (8) is adhesively fixed with the circuit board (4) bottom.
6. a kind of for detecting the compound sensor of liquid according to claim 1, it is characterised in that: the temperature sensor
It (5) is resistance and temperature linearly relevant thermistor element.
7. a kind of for detecting the compound sensor of liquid according to claim 1, it is characterised in that: the copper sheet (8) with
The contact surface of the circuit board (4) is provided with felt pad, and adopts between (8) four side of the copper sheet and the circuit board (4) bottom surface
It is sealed with heat-conducting silicone grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920278904.9U CN209310853U (en) | 2019-03-06 | 2019-03-06 | It is a kind of for detecting the compound sensor of liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920278904.9U CN209310853U (en) | 2019-03-06 | 2019-03-06 | It is a kind of for detecting the compound sensor of liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209310853U true CN209310853U (en) | 2019-08-27 |
Family
ID=67682080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920278904.9U Active CN209310853U (en) | 2019-03-06 | 2019-03-06 | It is a kind of for detecting the compound sensor of liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209310853U (en) |
-
2019
- 2019-03-06 CN CN201920278904.9U patent/CN209310853U/en active Active
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