CN209153558U - A kind of dish-washing machine with water level detecting function - Google Patents
A kind of dish-washing machine with water level detecting function Download PDFInfo
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- CN209153558U CN209153558U CN201821493192.4U CN201821493192U CN209153558U CN 209153558 U CN209153558 U CN 209153558U CN 201821493192 U CN201821493192 U CN 201821493192U CN 209153558 U CN209153558 U CN 209153558U
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Abstract
The utility model discloses a kind of dish-washing machine with water level detecting function, including level switch and unit, the level switch is installed on the bottom of the liner of the unit, and the level switch detects the water level of the liner；The side of insulation shell is additionally provided with horizontal detection lug boss outstanding outward, the detection lug boss is set to the top of the reference lugs, the detection conductor is placed in the internal cavities of the detection lug boss, and the detection conductor and the electrical connection of capacitive induction detection circuit, the reference lugs of the insulation shell are fixed on the bottom of the liner.The equivalent capacity between detection conductor and reference conductor is detected by capacitive induction detection circuit to judge water level, and compared with existing vapour-pressure type water level switch, water level judgement is more accurate.
Description
Technical field
The utility model relates to cooking apparatus field more particularly to a kind of dish-washing machines with water level detecting function.
Background technique
Dish-washing machine is to be carried out using detergent and washing water to rubbish such as the swills for being attached to tableware or cooker etc.
The equipment of washing, the waste water for washing generation are discharged by drainpipe, it is therefore desirable to which it is interior to adjust to detect the water level of internal cavity of bowl washer
The water of gallbladder.But existing dish-washing machine uses vapour-pressure type water level switch, pushes touch-switch to sentence using the pressure of height of water level
It cuts off the water supply position, is unable to judge accurately water level, so that dish-washing machine can not disconnect protection and draining according to the change triggers inlet valve of water level
Pump spilling water draining.
Utility model content
The purpose of this utility model is that propose a kind of dish-washing machine with water level detecting function, can accurate judgement water level,
So that dish-washing machine can disconnect protection according to the change triggers inlet valve of water level and draining pump spilling water drains.
For this purpose, the utility model uses following technical scheme:
A kind of dish-washing machine with water level detecting function, including level switch and unit, the water level detecting
Device is installed on the bottom of the liner of the unit, and the level switch detects the water level of the liner；
The level switch includes insulation shell, detects conductor, reference conductor and capacitive induction detection circuit, described
The inside of insulation shell is hollow structure, and the capacitive induction detection circuit is installed on the inside of the insulation shell；It is described
Horizontal protrude forms reference lugs outward for the bottom of the side of insulation shell, and the reference conductor is placed in the benchmark protrusion
In the internal cavities in portion, and the reference conductor is grounded；
The side of the insulation shell is additionally provided with horizontal detection lug boss outstanding, the detection lug boss outward and is set to
The top of the reference lugs, the detection conductor is placed in the internal cavities of the detection lug boss, and the inspection
Conductor and the electrical connection of capacitive induction detection circuit are surveyed, the reference lugs of the insulation shell are fixed on the bottom of the liner
Portion.
Preferably, the insulation shell is equipped with multiple detection lug bosses, and multiple detection lug bosses are from top to bottom
It is arranged in the top of the reference lugs evenly and at intervals；
The level switch is equipped with multiple detection conductors, places in the internal cavities of each detection lug boss
One detection conductor；The capacitive induction detection circuit is equipped with multiple detection ports, in multiple detection conductors
Each it is electrically connected to corresponding detection port.
Preferably, the material of the detection conductor and reference conductor is sheet metal.
Preferably, the capacitive induction detection circuit includes capacitive induction integrated chip, the capacitive induction collection
At the model TS02 of chip, the equivalent capacitance value of the detection of capacitive induction integrated chip the detection conductor and water；The inspection
Survey the detection port electrical connection of conductor and capacitive induction integrated chip.
Preferably, the capacitive induction detection circuit further includes reference capacitance, detection capacitor and detection resistance, the base
One end of pseudo-capacitance and reference conductor electrical connection, the other end of the reference capacitance and one end electrical connection of detection resistance, it is described
One end electrical connection of the other end and detection capacitor of detection resistance, the other end of the detection capacitor and detection conductor electrical connection.
Preferably, the capacitive induction detection circuit further includes filter resistance and filter capacitor, the detection conductor and
After the filter resistance series connection and detection port of capacitive induction integrated chip is electrically connected；
One end of the separate detection conductor of one end and filter resistance of the filter capacitor is electrically connected, the filter capacitor
Other end ground connection.
Preferably, the unit is equipped with main control board, and the main control board is by MCU chip and its periphery electricity
Road composition；The output port of the capacitive induction integrated chip passes through conducting wire and the electrical connection of the input port of MCU chip.
Preferably, the unit is additionally provided with inlet valve, the first output port electricity of the inlet valve and MCU chip
Connection.
Preferably, the unit is additionally provided with draining pump, the second output terminal mouth electricity of the draining pump and MCU chip
Connection.
Preferably, the bottom of the liner is equipped with sink, and the level switch is installed on the bottom of the sink, described
The reference lugs of insulation shell are fixed on the bottom of the sink.
Water level detecting is arranged by the bottom of the liner in unit in the dish-washing machine with water level detecting function
Device accurately detects the water level of liner, in order to disconnect protection and draining pump spilling water row according to the change triggers inlet valve of water level
Water.The reference conductor of the level switch is grounded, and as datum level, is set to the bottom of liner；Detect conductor and capacitor
Formula incudes detection circuit electrical connection, detects the equivalent electricity between detection conductor and reference conductor by capacitive induction detection circuit
Hold to judge water level, compared with existing vapour-pressure type water level switch, water level judgement is more accurate.The vapour-pressure type water level switch is
Touch-switch is pushed to judge water level using the pressure of height of water level.
Detailed description of the invention
Attached drawing is described further the utility model, but the content in attached drawing does not constitute any limit to the utility model
System.
Fig. 1 is the level switch structural schematic diagram of the one of embodiment of the utility model；
Fig. 2 is the level switch optimization structural schematic diagram of the one of embodiment of the utility model；
Fig. 3 is the capacitive induction detection circuit structure diagram of the one of embodiment of the utility model.
Wherein: level switch 1；Unit 2；Liner 21；Insulation shell 11；Detect conductor 12；Reference conductor 13；
Capacitive induction detection circuit 14；Reference lugs 111；Detect lug boss 112；Capacitive induction integrated chip 141；Benchmark electricity
Hold 142；Detect capacitor 143；Detection resistance 144；Filter resistance 145；Filter capacitor 146；MCU chip 22；Inlet valve 23；Draining
Pump 24.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
The dish-washing machine with water level detecting function of the present embodiment, as shown in Figure 1, including level switch 1 and dish-washing machine
Main body 2, the level switch 1 are installed on the bottom of the liner 21 of the unit 2, and the level switch 1 detects
The water level of the liner 21；
The level switch 1 includes insulation shell 11, detection conductor 12, reference conductor 13 and capacitive induction detection electricity
The inside on road 14, the insulation shell 11 is hollow structure, and the capacitive induction detection circuit 14 is installed on the insulation shell
The inside of body 11；Horizontal protrusion forms reference lugs 111 outward for the bottom of the side of the insulation shell 11, and the benchmark is led
Body 13 is placed in the internal cavities of the reference lugs 111, and the reference conductor 13 is grounded；
The side of the insulation shell 11 is additionally provided with horizontal detection lug boss 112 outstanding outward, the detection lug boss
112 are set to the top of the reference lugs 111, and the detection conductor 12 is placed in the inside of the detection lug boss 112
In cavity, and the detection conductor 12 and capacitive induction detection circuit 14 are electrically connected, and the benchmark of the insulation shell 11 is convex
Play the bottom that the liner 21 is fixed in portion 111.
The dish-washing machine with water level detecting function is arranged water level by the bottom of the liner 21 in unit 2 and examines
Device 1 is surveyed, accurately detects the water level of liner 21, in order to disconnect protection and draining pump according to the change triggers inlet valve 23 of water level
The draining of 24 spilling waters.The reference conductor 13 of the level switch 1 is grounded, and as datum level, is set to the bottom of liner 21；Inspection
It surveys conductor 12 and capacitive induction detection circuit 14 is electrically connected, detection 12 He of conductor is detected by capacitive induction detection circuit 14
Equivalent capacity between reference conductor 13 judges water level, and compared with existing vapour-pressure type water level switch, water level judgement is more smart
Really.The vapour-pressure type water level switch is to push touch-switch to judge water level using the pressure of height of water level.
Preferably, as shown in Fig. 2, the insulation shell 11 is equipped with multiple detection lug bosses 112, multiple detections
Lug boss 112 is arranged in the top of the reference lugs 111 evenly and at intervals from top to bottom；
The level switch 1 is equipped with multiple detection conductors 12, the internal cavities of each detection lug boss 112
One detection conductor 12 of middle placement；The capacitive induction detection circuit 14 is equipped with multiple detection ports, multiple inspections
It surveys each of conductor 12 and is electrically connected to corresponding detection port.
Multiple detection lug bosses 112 are arranged in the top of the reference lugs 111 evenly and at intervals from top to bottom,
A detection conductor 12 is placed in the internal cavities of each detection lug boss 112, to can detect that liner 21
Multiple water levels, using guarantee water and detect conductor 12 equivalent capacity capacity because the variation of water level is mutation effect, can precisely sentence
It cuts off the water supply position.The setting quantity of the detection conductor 12, is determined by required water level number.It is so that two detection conductors 12 are arranged
Example, as shown in Fig. 2, defining the detection conductor 12 that underlying detection conductor 12 is sensed water level A, the water level A is triggering
Inlet valve 23 disconnects the water height of protection；Define the detection conductor 12 that the detection conductor 12 being located above is sensed water level B, institute
Stating water level B is the water height for triggering the draining of 24 spilling water of draining pump.
Reference conductor 13 is set to the bottom of liner 21, must be covered with water, and defines the equivalent electricity of reference conductor 13 and water body
Holding is CA.When water height is not up to water level A, the equivalent capacity of underlying detection conductor 12 and water body is CB, CB<
CA；When water height reaches water level A, the equivalent capacity of underlying detection conductor 12 and water body is CA.Similarly, work as water body
When height is not up to water level B, the equivalent capacity of underlying detection conductor 12 and water body is also CB, CB< CA；Work as water height
When reaching water level B, the equivalent capacity of the detection conductor 12 and water body that are located above also is CA.To whenever the capacity of equivalent capacity
As water height reaches a preset water level when mutation, and capacitive induction detection circuit 14 can be detected water-outlet body height
Which preset water level reached.
Preferably, the material of the detection conductor 12 and reference conductor 13 is sheet metal.
Preferably, as shown in figure 3, the capacitive induction detection circuit 14 includes capacitive induction integrated chip 141, institute
State the model TS02 of capacitive induction integrated chip 141, the detection of the capacitive induction integrated chip 141 detection conductor 12 with
The equivalent capacitance value of water；The detection port electrical connection of the detection conductor 12 and capacitive induction integrated chip 141.
When detecting conductor 12 has multiple, the setting of capacitive induction integrated chip 141 is identical with detection 12 quantity of conductor
Port is detected, a detection port is electrically connected a detection conductor 12, to send out according to the equivalent capacitance value of which detection port
Changing, can know which preset water level water height reaches.Still for two detection conductors 12 are arranged, as shown in figure 3, electric
It is detection port that appearance formula, which incudes integrated chip 141 middle port CS1, CS2, and underlying detection conductor 12 and port CS1 are electrically connected
It connects, port CS1 is for detecting whether water height reaches water level A；Detection conductor 12 and port the CS2 electrical connection being located above,
Port CS2 is for detecting whether water height reaches water level B.
Preferably, as shown in figure 3, the capacitive induction detection circuit 14 further includes reference capacitance 142, detection capacitor
143 and detection resistance 144, one end of the reference capacitance 142 and reference conductor 13 are electrically connected, the reference capacitance 142 it is another
One end and the electrical connection of one end of detection resistance 144, the other end of the detection resistance 144 and one end of detection capacitor 143 are electrically connected
It connects, the other end and detection conductor 12 of the detection capacitor 143 are electrically connected.
The volume change that can detect that the equivalent capacity of detection conductor 12 and water by foregoing circuit, when detection conductor 12 has
When multiple, the inspection branch of each detection conductor 12 is still one detection capacitor 143 of series connection and a detection resistance 144.Still with
It is arranged for two detection conductors 12, as shown in figure 3, resistance R1 and resistance R2 are detection resistance 144, electricity on the basis of capacitor C0
Hold 142, capacitor C1 and capacitor C2 are detection capacitor 143；One end of capacitor C0 and reference conductor 13 are electrically connected, and capacitor C0's is another
One end and the electrical connection of one end of resistance R1, one end electrical connection of the other end and capacitor C1 of the resistance R1, capacitor C1's is another
The detection conductor 12 of end and water level A are electrically connected；One end of resistance R2 and the other end electrical connection of capacitor C0, the other end of resistance R2
It is electrically connected with one end of capacitor C2, the other end of capacitor C2 and the detection conductor 12 of water level B are electrically connected.
When detection, when water height is not up to water level A, capacitance that port CS1 is detected are as follows:
Due to CB< CA, the capacitance of port CS1 is not up to preset threshold, do not export water
Position detection signal；When water height reaches water level A, capacitance that port CS1 is detected are as follows:
The capacitance of port CS1 is more than preset threshold, exports water level detecting signal, obtains
Water-outlet body height reaches the water level inspection result of water level A.
Similarly, when water height is not up to water level B, capacitance that port CS2 is detected are as follows:
Due to CB< CA, the capacitance of port CS2 is not up to preset threshold, do not export water
Position detection signal；When water height reaches water level B, capacitance that port CS2 is detected are as follows:
The capacitance of port CS2 is more than preset threshold, exports water level detecting signal, obtains
Water-outlet body height reaches the water level inspection result of water level B.
Preferably, as shown in figure 3, the capacitive induction detection circuit 14 further includes filter resistance 145 and filter capacitor
146, it is described detection conductor 12 and filter resistance 145 connect after and capacitive induction integrated chip 141 detection port be electrically connected；
One end of the separate detection conductor 12 of one end and filter resistance 145 of the filter capacitor 146 is electrically connected, the filter capacitor
146 other end ground connection.
Make the equivalent capacitance value detected more accurate by the way that filter circuit is arranged, avoids its other than SEA LEVEL VARIATION
His influence of the environment factor to equivalent capacitance value.When detecting conductor 12 has multiple, each detection conductor 12 configures a filtering
Circuit.Still for two detection conductors 12 are arranged, as shown in figure 3, resistance R3 and resistance R4 are filter resistance 145, capacitor
C3 and capacitor C4 is detection capacitor 143；Water level A detection conductor 12 and resistance R3 series connection after and capacitive induction integrated chip
141 port CS1 electrical connection, one end of capacitor C3 and one end by proximal port CS1 of resistance R3 are electrically connected, and capacitor C3's is another
End ground connection；It is electrically connected after detection conductor 12 and resistance the R4 series connection of water level B with the port CS2 of capacitive induction integrated chip 141,
One end of capacitor C4 and one end by proximal port CS2 of resistance R4 are electrically connected, the other end ground connection of capacitor C4.
Preferably, as shown in figure 3, the unit 2 is equipped with main control board, the main control board is by MCU core
Piece 22 and its peripheral circuit composition；The output port of the capacitive induction integrated chip is defeated by conducting wire and MCU chip 22
Inbound port electrical connection.
Obtained water level detecting result is sent to MCU chip 22 by the capacitive induction integrated chip, so as to MCU chip
The corresponding device of 22 triggerings, carries out water height adjusting.As shown in figure 3, the port out1 of capacitive induction integrated chip 141,
Out2 is output port, and port IO1, IO2 of MCU chip 22 are input port；The end of capacitive induction integrated chip 141
Mouth out1 and the port IO1 of MCU chip 22 electrical connection, send the water level detecting knot that water height reaches water level A to MCU chip 22
Fruit；The port out2 of capacitive induction integrated chip 141 and the port IO2 electrical connection of MCU chip 22, send to MCU chip 22
Water height reaches the water level detecting result of water level B.
Preferably, as shown in figure 3, the unit 2 is additionally provided with inlet valve 23, the inlet valve 23 and MCU chip
22 the first output port electrical connection.Protection, water inlet are disconnected to which MCU chip 22 triggers inlet valve 23 according to water level detecting result
Pump stops supplying water to liner 21.As shown in figure 3, the port out1 of MCU chip 22 is the first output port, inlet valve 23 and MCU
The port out1 of chip 22 is electrically connected, and when water height reaches water level A, the port IO1 of MCU chip 22 receives water level detecting
Signal show that water height reaches the water level inspection result of water level A, so that the port out1 of MCU chip 22 is defeated to inlet valve 23
The trigger signal of protection is disconnected out.
Preferably, as shown in figure 3, the unit 2 is additionally provided with draining pump 24, the draining pump 24 and MCU chip
22 second output terminal mouth electrical connection.To which MCU chip 22 triggers the draining of 24 spilling water of draining pump according to water level detecting result, prevent
The water height of liner 21 is more than peak level.As shown in figure 3, the port out2 of MCU chip 22 is second output terminal mouth, draining
Pump 24 and the port out2 of MCU chip 22 electrical connection, when water height reaches water level B, the port IO2 of MCU chip 22 is received
To water level detecting signal, show that water height reaches the water level inspection result of water level B, thus the port out2 of MCU chip 22 to
Draining pump 24 exports the trigger signal of spilling water draining.
Preferably, the bottom of the liner 21 is equipped with sink, and the level switch 1 is installed on the bottom of the sink,
The reference lugs 111 of the insulation shell 11 are fixed on the bottom of the sink.Sink is connected to cup, and is equipped with draining
Mouthful, level switch 1 is installed on to the bottom of the sink, can accurately detect the actual water level variation of liner 21.
Technical principle of the utility model has been described above with reference to specific embodiments.These descriptions are intended merely to explain this reality
With novel principle, and it cannot be construed to the limitation to scope of protection of the utility model in any way.Based on the explanation herein,
Those skilled in the art, which does not need to pay for creative labor, can associate with other specific implementation modes of this utility model,
These modes are fallen within the protection scope of the utility model.
Claims (10)
1. a kind of dish-washing machine with water level detecting function, including level switch and unit, the level switch
It is installed on the bottom of the liner of the unit, the level switch detects the water level of the liner, it is characterised in that:
The level switch includes insulation shell, detection conductor, reference conductor and capacitive induction detection circuit, the insulation
The inside of shell is hollow structure, and the capacitive induction detection circuit is installed on the inside of the insulation shell；The insulation
Horizontal protrusion forms reference lugs outward for the bottom of the side of shell, and the reference conductor is placed in the reference lugs
In internal cavities, and the reference conductor is grounded；
The side of the insulation shell is additionally provided with horizontal detection lug boss outstanding, the detection lug boss outward and is set to described
The top of reference lugs, the detection conductor is placed in the internal cavities of the detection lug boss, and the detection is led
Body and the electrical connection of capacitive induction detection circuit, the reference lugs of the insulation shell are fixed on the bottom of the liner.
2. the dish-washing machine according to claim 1 with water level detecting function, it is characterised in that: the insulation shell is equipped with
Multiple detection lug bosses, multiple detection lug bosses are arranged in the reference lugs evenly and at intervals from top to bottom
Top；
The level switch is equipped with multiple detection conductors, places one in the internal cavities of each detection lug boss
The detection conductor；The capacitive induction detection circuit is equipped with multiple detection ports, each of multiple described detection conductors
It is electrically connected to corresponding detection port.
3. the dish-washing machine according to claim 1 or 2 with water level detecting function, it is characterised in that: the detection conductor
Material with reference conductor is sheet metal.
4. the dish-washing machine according to claim 1 or 2 with water level detecting function, it is characterised in that: the condenser type sense
Answering detection circuit includes capacitive induction integrated chip, the model TS02 of the capacitive induction integrated chip, the capacitor
Formula incudes the equivalent capacitance value of integrated chip detection detection conductor and water；The detection conductor and capacitive induction integrated chip
Detect port electrical connection.
5. the dish-washing machine according to claim 4 with water level detecting function, it is characterised in that: the capacitive induction inspection
Slowdown monitoring circuit further includes reference capacitance, detection capacitor and detection resistance, and one end of the reference capacitance and reference conductor are electrically connected, institute
State the other end of reference capacitance and one end electrical connection of detection resistance, the other end of the detection resistance and one end of detection capacitor
Electrical connection, the other end of the detection capacitor and detection conductor electrical connection.
6. the dish-washing machine according to claim 5 with water level detecting function, it is characterised in that: the capacitive induction inspection
Slowdown monitoring circuit further includes filter resistance and filter capacitor, and after the detection conductor and filter resistance are connected and capacitive induction integrates core
The detection port of piece is electrically connected；
One end of the separate detection conductor of one end and filter resistance of the filter capacitor is electrically connected, the filter capacitor it is another
End ground connection.
7. the dish-washing machine according to claim 6 with water level detecting function, it is characterised in that: the unit is set
There is main control board, the main control board is made of MCU chip and its peripheral circuit；The capacitive induction integrated chip
Output port passes through conducting wire and the electrical connection of the input port of MCU chip.
8. the dish-washing machine according to claim 7 with water level detecting function, it is characterised in that: the unit is also
Equipped with inlet valve, the first output port of the inlet valve and MCU chip is electrically connected.
9. the dish-washing machine according to claim 7 with water level detecting function, it is characterised in that: the unit is also
Equipped with draining pump, the second output terminal mouth of the draining pump and MCU chip is electrically connected.
10. the dish-washing machine according to claim 1 or 2 with water level detecting function, it is characterised in that: the bottom of the liner
Portion is equipped with sink, and the level switch is installed on the bottom of the sink, and the reference lugs of the insulation shell are fixed on
The bottom of the sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821493192.4U CN209153558U (en) | 2018-09-12 | 2018-09-12 | A kind of dish-washing machine with water level detecting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821493192.4U CN209153558U (en) | 2018-09-12 | 2018-09-12 | A kind of dish-washing machine with water level detecting function |
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| Publication Number | Publication Date |
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| CN209153558U true CN209153558U (en) | 2019-07-26 |
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ID=67331086
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| CN201821493192.4U Active CN209153558U (en) | 2018-09-12 | 2018-09-12 | A kind of dish-washing machine with water level detecting function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116182497A (en) * | 2021-11-26 | 2023-05-30 | 青岛海尔电冰箱有限公司 | Water level detection method of water storage container and computer storage medium |
-
2018
- 2018-09-12 CN CN201821493192.4U patent/CN209153558U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116182497A (en) * | 2021-11-26 | 2023-05-30 | 青岛海尔电冰箱有限公司 | Water level detection method of water storage container and computer storage medium |
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