CN108267193A - For the water level detecting equipment and steam oven of steam oven - Google Patents
For the water level detecting equipment and steam oven of steam oven Download PDFInfo
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- CN108267193A CN108267193A CN201810064923.1A CN201810064923A CN108267193A CN 108267193 A CN108267193 A CN 108267193A CN 201810064923 A CN201810064923 A CN 201810064923A CN 108267193 A CN108267193 A CN 108267193A
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- receiving element
- water
- light receiving
- steam oven
- photocell
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
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- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The embodiment of the present invention provides a kind of water level detecting equipment and steam oven for steam oven, belongs to steam oven field.The equipment includes：One or more detection devices are fixed on the inner wall of water box mounting portion of the steam oven, wherein the detection device includes：Detection module, the detection module include photocell and light receiving element, the photocell and light receiving element is arranged in a crossed manner and angle between the photocell and the light receiving element has predetermined angle；And circuit module, for detecting the intensity for the light that the light receiving element is received, and corresponding indication signal is exported according to the intensity of light that the light receiving element is received；And control device, the indication signal respectively exported according to one or more of detection devices determines the water position status of the water box of the steam oven, wherein, each detection module is fixed at the different location on the inner wall of the water box mounting portion, and the height residing for each detection module differs.It can quickly and accurately detect the water position status of water outlet box in real time.
Description
Technical field
The present invention relates to steam oven fields, and in particular, to a kind of water level detecting equipment and steam oven for steam oven.
Background technology
At present, steam oven water box level testing methods mainly have float type and probe-type, and both of which is contact type measurement side
Method.Float type method is normally based on the principles such as electromagnetism or Hall effect to complete water level detecting, general only two grades, for examining
Survey high and low water level.Probe-type method is to complete water level detecting based on capacitance principle, detect gear number dependent on probe
How much.
Chinese patent application CN101495930A discloses a kind of non-contact type liquid level control apparatus, including at least one
Capacitive sensor is arranged on the outer surface of water tank side wall, according to the volume capacitance variations that capacitive sensor senses
Control is supplied to the water of water tank.
Present inventor has found during stating the prior art on the implementation：(1) float type and probe-type method are
Contaction measurement method, that is to say, that float or metal probe must be placed in water box, not easy to clean in this way, and easy contaminant water
Source；(2) float type method is difficult to complete multi gear water level detecting, and testing result is relatively rough；(3) probe-type method leads to water box
Complex structural designs, circuit lead trouble and inconvenient user take out the cost for adding water, also increasing the manufacturing；(4) it is non-contact
Capacitive detection module needs to be close to water tank side wall in type water-level control apparatus, and the water box of steam oven need often to take out plus water,
If circuit detection module is mounted on water box side wall, is easily sputtered or collided by water, circuit lead can lead to structure in addition
It designs extremely complex, therefore is not suitable for steam oven.
Invention content
The purpose of the embodiment of the present invention is to provide a kind of water level detecting equipment and steam oven for steam oven, for solving
Or at least partly solve above-mentioned technical problem.
To achieve these goals, the embodiment of the present invention provides a kind of water level detecting equipment for steam oven, described to set
It is standby to include：One or more detection devices are fixed on the inner wall of water box mounting portion of the steam oven, wherein the detection dress
Put including：Detection module, the detection module include photocell and light receiving element, the photocell and the light
Receiving element is arranged in a crossed manner and angle between the photocell and the light receiving element has predetermined angle；And electricity
Road module, for detecting the intensity for the light that the light receiving element is received, and the light received according to the light receiving element
Intensity export corresponding indication signal；And control device, the finger respectively exported according to one or more of detection devices
Show that signal determines the water position status of the water box of the steam oven, wherein, each detection module is fixed on the water box installation
At different location on the inner wall in portion, and the height residing for each detection module differs.
Optionally, the equipment further includes：Circuit board, one or more of detection devices are fixed on by the circuit board
On the inner wall of the water box mounting portion；And the detection device further includes：Enclosed seat, the enclosed seat are fixed on the circuit board
On, and there are two holes for setting on the enclosed seat, the photocell is arranged in a hole in described two holes, described
Light receiving element is arranged in another hole in described two holes.
Optionally, the angle between the photocell and the light receiving element is the light hair of the photocell
Penetrate end the optical receiving end of the light receiving element between angle, ranging from 50 ° to 70 ° of the predetermined angle, preferably
60°。
Optionally, it is laid out between the detection module using staged.
Optionally, the circuit module includes：Detection circuit, for the light that is received in response to the light receiving element
Varying strength and export different voltage；Micro control unit is used for：It is more than the feelings of preset value in the voltage of detection circuit output
Under condition, output represents to indicate anhydrous indication signal；And it is not more than the preset value in the voltage of detection circuit output
In the case of, output represents that instruction has the indication signal of water.
Optionally, the detection circuit includes：The power supply and first resistor being connected in series with the photocell；And
The second resistance being connected in series with the light receiving element.
Optionally, the detection circuit further includes：It is connected in parallel with the second resistance and is made of capacitance and resistance
Wave filter.
Optionally, the equipment further includes：Display device, the control device are additionally operable to that the display device is controlled to show
The water position status of the water box；And/or suggestion device, the control device are additionally operable to reach early warning value in the water level of the water box
In the case of, the suggestion device is controlled to send out prompting.
Optionally, the detection module is infrared tube, and the photocell is infrared-emitting diode, and the light connects
Receipts element is infrared receiving diode.
Correspondingly, the embodiment of the present invention also provides a kind of steam oven, and the steam oven includes above-mentioned for steam oven
Water level detecting equipment.
Through the above technical solutions, it can at least realize following technique effect：
(1) each component in water level detecting equipment is not in direct contact with water box, can not only realize contactless water
Position measures, and is also prevented from each component and is sputtered water or the damage caused by collision；
(2) angle has predetermined angle, to ensure in same detection module, light between photocell and light receiving element
The emergent light of radiated element can be received accurately by light receiving element, so as to enhance the intensity for the light that light receiving element is received,
Improve detection sensitivity；
(3) water position status of water outlet box can be quickly and accurately detected in real time.
The other feature and advantage of the embodiment of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is that the embodiment of the present invention is further understood for providing, and a part for constitution instruction, under
The specific embodiment in face is used to explain the embodiment of the present invention, but do not form the limitation to the embodiment of the present invention together.Attached
In figure：
Fig. 1 shows the structure diagram of the water level detecting equipment according to an embodiment of the invention for steam oven；
Fig. 2 shows the side views of the water level detecting equipment according to an embodiment of the invention for steam oven；
Fig. 3 shows the vertical view of the water level detecting equipment according to an embodiment of the invention for steam oven；
Fig. 4 shows the vertical view of the water level detecting equipment according to another embodiment of the present invention for steam oven；And
Fig. 5 shows the schematic diagram of circuit module.
Specific embodiment
The specific embodiment of the embodiment of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this
Locate described specific embodiment and be merely to illustrate and explain the present invention embodiment, be not intended to restrict the invention embodiment.
Those skilled in the art of the present technique are appreciated that the wording " comprising " used in the specification of the present invention refers to that there are upper
Feature, integer, step, operation, element and/or component are stated, but it is not excluded that other one or more features of presence or addition,
Integer, step, operation, element, component and/or combination thereof.It should be understood that when we claim element by " electric connection " or
During " coupled " to another element, it can be directly connected or coupled to other elements or there may also be intermediary elements.This
Outside, " electric connection " or " coupling " used herein can include wireless connection or wireless coupling.Wording used herein " and/
Or " whole including one or more associated list items or any cell and all combine.
Fig. 1 shows the structure diagram of the water level detecting equipment according to an embodiment of the invention for steam oven.Such as Fig. 1
Shown, the embodiment of the present invention provides a kind of water level detecting equipment for steam oven, which can include：One or more inspection
Device 100 is surveyed, is fixed on the inner wall of water box mounting portion of the steam oven, wherein each detection device includes：Detection module
110, the detection module 110 includes photocell 111 and light receiving element 112, the photocell 111 and the light
Receiving element 112 is arranged in a crossed manner and angle between the photocell 111 and the light receiving element 112 have it is default
Angle, so that the angle received between light of 111 emergent light of photocell and light receiving element 112 has the preset angle
Degree；And circuit module 120, for detecting the intensity of light that the light receiving element 112 is received, and according to the light-receiving
The intensity for the light that element 112 is received exports corresponding indication signal；And control device 200, according to one or more of
The indication signal that detection device 100 respectively exports determines the water position status of the water box, wherein, each detection module 110
At different location on the inner wall of the water box mounting portion, and the height residing for each detection module differs.Refer to
Show that signal can indicate that water box have water or anhydrous in the corresponding position of detection module 110, therefore control device 200 can be with
The water position status of water box is determined according to the instruction information of each indication signal.In embodiments of the present invention, be using indication signal as
It is illustrated for level signal, wherein, high level signal has been used to indicate water, and low level signal is used to indicate anhydrous.Water
Each component in level detection apparatus is not in direct contact with water box, can not only realize contactless level measuring, but also
Each component can be prevented to be sputtered water or the damage caused by collision, in addition, the equipment can quickly and accurately in real time
Detect the water position status of water outlet box.
Have in the corresponding position of water box water or it is anhydrous when, the intensity of the light received by light receiving element is different.
Specifically, if anhydrous in the corresponding position of detection module 110 in water box, the emergent light of photocell 111 is by big portion
Dividing and reflected by water box side wall so that light receiving element 112 can receive the most of light being emitted from photocell 111, from
And the intensity of light that light receiving element 112 is received is higher.If having water in the corresponding position of detection module 110 in water box,
Then the emergent light of photocell 111 is most of is reflected or is absorbed by water so that 112 technical ability of light receiving element receives seldom
Partial light, so that the intensity of light that light receiving element 112 is received is relatively low.Therefore, it can be connect according to light receiving element 112
The intensity of the light of receipts judges whether to have water in the corresponding position of detection module 110 in water box, so as to according to different height
The intensity of light that is received of light receiving element 112 at degree position determines the water position status of water box.
Each detection module 110 can be preferably fixed at the different height position of the same inner wall of water box mounting portion, water box
In the container wall materials of the part neighbouring at least with detection module 110 be transparent, such as water box can be transparent plastics water
Box etc..
Angle between photocell 111 and light receiving element 112 is that the light emitting end of photocell 111 and light connect
The angle between the optical receiving end of element 112 is received, for example, detection module 110 can be infrared tube, photocell 111 is
Infrared-emitting diode, light receiving element 112 are infrared receiving diode, then in embodiments of the present invention, two pole of infrared emission
Angle between pipe and infrared receiving diode is the angle between the lamp bead of the two.Optionally, light is sent out in the embodiment of the present invention
The angular range for penetrating the angle between the light emitting end of element 111 and the optical receiving end of light receiving element 112 can be for 50 ° extremely
70 °, preferably can be 60 °.That is, the inner wall institute of the photocell 111 and the water box mounting portion of steam oven after fixed
55 ° to 65 °, preferably 60 ° are may range from the angle of plane, and the light receiving element 111 after fixing and steam oven
The angle of plane may range from -55 ° to -65 °, preferably -60 ° where the inner wall of water box mounting portion；Alternatively, after fixed
The angle of plane where the inner wall of photocell 111 and the water box mounting portion of steam oven may range from -55 ° to -65 ° it is excellent
It is selected as -60 °, and the model of the light receiving element 111 after fixing and the angle of plane where the inner wall of the water box mounting portion of steam oven
Enclosing can be -55 ° to -65 °, preferably 60 °.There is fixed preset angle between photocell 111 and light receiving element 112
Degree, it is ensured that in same detection module 110, the emergent light of photocell 111 can accurately be connect by light receiving element 112
It receives, so as to enhance the intensity for the light that light receiving element 112 is received, improves detection sensitivity.
To be below infrared tube with detection module 110, photocell 111 is infrared-emitting diode, light-receiving member
For part 112 is infrared receiving diode, to the water level detecting equipment provided in an embodiment of the present invention for steam oven into traveling
One step explanation.
Fig. 2 shows the side view of the water level detecting equipment for steam oven according to embodiments of the present invention, such as Fig. 2 institutes
Show, water box 130 can be fixed on water box mounting portion from the horizontal extraction of water box mounting portion 140 and insertion, infrared tube 150
At the different height position of 140 inner wall.Optionally, it is red for the optical signal crosstalk between each infrared tube 150 is minimized
Staged layout may be used between pipe 150 outside, preferably infrared tube 150 can be fixed on the homonymy of water box mounting portion 140
On inner wall, and it is laid out on the homonymy inner wall using staged.
Fig. 3 shows the vertical view of the water level detecting equipment for steam oven according to embodiments of the present invention.Such as Fig. 3 institutes
Showing, infrared tube 150 is preferably fixed on the homonymy inner wall of water box mounting portion 140, in same infrared tube 150, infrared emission
Angle between the lamp bead of diode and the lamp bead of infrared receiving diode may range from 50 ° to 70 °, preferably can be
60°.Infrared tube 150 can be fixed on the inner wall of water box mounting portion 140 by circuit board 160, specifically, circuit board 160
Side can be fitted on the inner wall of water box mounting portion 140, infrared tube 150 can be welded on the another of circuit board 160
Side.
150 quantity of infrared tube and installation site can determine by the quantity of the gear of required water level detecting, for example,
If four gears need to be set, which is 25%, 50%, 75% and 100% respectively, then can be welded on circuit board
4 infrared tubes 150, and 4 infrared tubes 150 correspond respectively to 25%, 50%, 75% and of water box height from low to high
100%, and staged layout may be used in 4 infrared tubes 150.Alternatively, in turn, it can also be according to infrared tube 150
Quantity and position set gear, if for example, covered with 4 infrared tubes 150 on circuit board, and 4 infrared tubes 150
25%, 50%, 75% and the 100% of water box height is corresponded respectively to from low to high, then four gears can be set, four shelves
Position is 25%, 50%, 75% and 100% respectively.
Fig. 4 shows the vertical view of the water level detecting equipment according to another embodiment of the present invention for steam oven.Such as Fig. 4
It is shown, it is provided in an embodiment of the present invention to include for the water level detecting equipment of steam oven：Welding is used on circuit boards
The enclosed seat 170 of fixed infrared-emitting diode and infrared receiving diode, the length that enclosed seat stretches out circuit board 170 can be with
Less than or equal to the length that infrared-emitting diode and infrared receiving diode stretch out circuit board 170.It is provided on enclosed seat 170
Two holes penetrated, infrared-emitting diode be disposed therein a hole (hole relative to circuit board 170 angle of inclination with it is red
Outer emitting diode is consistent relative to the angle of inclination of circuit board 170) in, light receiving element is disposed therein another hole (should
Hole is consistent relative to the angle of inclination of circuit board 170 with infrared receiving diode relative to the angle of inclination of circuit board 170) in.
The shape of enclosed seat 170 can be arbitrary, for example, it may be by two hollow cylinders, two hollow ellipse cylinders or two
The compositions such as a hollow cuboid.The shape in the hole on enclosed seat 170 can also be arbitrary, for example, it may be ellipse, length
It is rectangular etc., alternatively, the shape in hole can keep one with the shape of the lamp bead of the lamp bead and infrared diode of infrared-emitting diode
It causes.Enclosed seat can fix the lamp bead of infrared-emitting diode and the lamp bead of infrared receiving diode, prevent normal use process
The shaking of middle lamp bead, and the optical crosstalk being also prevented between different infrared tubes 150 improve reliability.
Fig. 5 shows the schematic diagram of circuit module.As shown in figure 5, circuit module can include detection circuit and micro-control list
First MCU, wherein, detection circuit can include：With the infrared-emitting diode D1 power supplys being connected in series with and resistance R1, supply voltage
Can be 5V, resistance R1 is infrared-emitting diode D1 divider resistances, the light signal strength of infrared-emitting diode D1 transmittings
Size and electric current I1Correlation, electric current I1The light signal strength of bigger infrared-emitting diode D1 transmittings is bigger.Further, detection electricity
Road can also include：The resistance R2 being connected in series with the infrared receiving diode D2 and resistance R3 being connected in parallel with resistance R2
With capacitance C3, wherein, resistance R3 and capacitance C3 are connected in series with.MCU is used to measure the output voltage V of detection circuitadc, resistance R2
For charging resistor, when infrared receiving diode D2 receives optical signal, then larger electric current I is exported2, due to the pin of MCU
Input resistance is very big, therefore electric current I2Almost from R2In flow away, formed voltage, voltage value Vadc=R2*I2, therefore judge
VadcValue be that can determine whether the power of received IR signal.Resistance R3With capacitance C3A low-pass first order filter is formed, for filtering
Except useless HF noise signal.In addition, in order to further suppress noise fluctuations, smothing filtering may be used in MCU to receiving
Voltage signal handled.
Specifically, when anhydrous at the height and position residing for infrared tube in water box, then infrared-emitting diode emits
Most of optical signal is reflected by water box side wall, therefore the electric current I that infrared receiving diode generates2It is larger, so as to VadcAlso compared with
Greatly, when the voltage is more than preset value, then MCU can determine anhydrous at the height and position in water box residing for infrared tube that MCU is defeated
Go out and indicate anhydrous indication signal, for example, low level signal " 0 " can be exported.When the height position residing for infrared tube in water box
When there is water at the place of putting, then most of optical signal of infrared-emitting diode transmitting is reflected or is absorbed by water, is returned to infrared receiver
The optical signal of diode is few, then the electric current I that infrared receiving diode is caused to generate2It is smaller, so as to VadcAlso it is smaller, when the electricity
When pressure is less than preset value, then MCU can determine there is water at the height and position in water box residing for infrared tube, and MCU output instructions have
The indication signal of water, for example, high level " 1 " can be exported.In this way, water box corresponding one can be detected by each infrared tube
Whether there is water at a height, that is to say, that one grade of water level detecting can be performed by an infrared tube, it is multiple to perform
The water level detecting of gear, it is only necessary to add multiple infrared tubes and corresponding multiple circuit modules.
When it is implemented, R1、R2、R3、C3Can be respectively 1k Ω, 100k Ω, 10k Ω and 1 μ F, voltage preset value can be with
2V is set as, MCU supply voltages are 5V.By taking 4 grades of water level detectings as an example, using 4 infrared tubes in cascade arrangement, 4
The installation position of infrared tube corresponds respectively to 25%, 50%, 75% and the 100% of water box height.When anhydrous, MCU can be with
Five kinds of level signals are exported, respectively " 0000 " " 0001 ", " 0011 ", " 0111 ", " 1111 ", this five kinds of level signals are right respectively
The water position status answered is " being less than 25% ", " being less than 50% higher than 25% ", " being less than 75% higher than 50% ", " is higher than 75%
And less than 100% ", " 100% ", wherein, high level " 1 " indicates water, and low level " 0 " represents anhydrous.So as to which control device can
With according to received volume level signal, corresponding water position status.Level testing methods more than 4 grades are similar with result, herein
It repeats no more.
Further, equipment provided in an embodiment of the present invention can also include display device and/or suggestion device, wherein,
Control device can also control display device to show the water position status of water box and reach early warning value in the water position status of water box
In the case of, control suggestion device sends out the related prompting of water shortage.Display device, suggestion device can be integrated in one with control device
It rises, for example, the function performed by control device, display device and suggestion device can be performed by control panel.
For example, if early warning value is provided that 50%, control device can be " 0011 " in the level signal received
In the case of, control suggestion device sends out the related prompting of few water, if control device further receives level signal
" 0001 " can then control suggestion device to send out the related prompting of water shortage.The suggestion device can be sound prompt device etc.,
Or can prompting be sent out by display device, for example, sending out text prompt or flash for prompting etc., user by display device
Water box can be carried out according to the prompting that suggestion device is sent out adding water.
Correspondingly, the embodiment of the present invention also provides a kind of steam oven, which can include the above embodiment of the present invention
The water level detecting equipment for steam oven provided.
The optional embodiment of the embodiment of the present invention is described in detail above in association with attached drawing, still, the embodiment of the present invention is simultaneously
The detail being not limited in the above embodiment, can be to of the invention real in the range of the technology design of the embodiment of the present invention
The technical solution for applying example carries out a variety of simple variants, these simple variants belong to the protection domain of the embodiment of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the embodiment of the present invention pair
Various combinations of possible ways no longer separately illustrate.
It will be appreciated by those skilled in the art that all or part of the steps of the method in the foregoing embodiments are can to pass through
Program is completed to instruct relevant hardware, which is stored in a storage medium, is used including some instructions so that single
Piece machine, chip or processor (processor) perform all or part of step of each embodiment the method for the application.It is and preceding
The storage medium stated includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory
The various media that can store program code such as (RAM, Random Access Memory), magnetic disc or CD.
In addition, arbitrary combination can also be carried out between a variety of different embodiments of the embodiment of the present invention, as long as it is not
The thought of the embodiment of the present invention is violated, should equally be considered as disclosure of that of the embodiment of the present invention.
Claims (10)
1. a kind of water level detecting equipment for steam oven, which is characterized in that the equipment includes：
One or more detection devices are fixed on the inner wall of water box mounting portion of the steam oven, wherein the detection device
Including：
Detection module, the detection module include photocell and light receiving element, and the photocell and the light connect
It receives element crosses setting and the angle between the photocell and the light receiving element has predetermined angle；And
Circuit module for detecting the intensity for the light that the light receiving element is received, and is connect according to the light receiving element
The intensity of the light of receipts exports corresponding indication signal；And
Control device, the indication signal respectively exported according to one or more of detection devices determine the water box of the steam oven
Water position status,
Wherein, each detection module is fixed at the different location on the inner wall of the water box mounting portion, and each described
Height residing for detection module differs.
2. equipment according to claim 1, which is characterized in that
The equipment further includes：Circuit board, one or more of detection devices are fixed on the water box by the circuit board and pacify
On the inner wall in dress portion；And
The detection device further includes：Enclosed seat, the enclosed seat are fixed on the circuit board, and are provided on the enclosed seat
Two holes, the photocell are arranged in a hole in described two holes, and the light receiving element is arranged on described two
In another hole in a hole.
3. equipment according to claim 1, which is characterized in that between the photocell and the light receiving element
Angle is the angle between the light emitting end of the photocell and the optical receiving end of the light receiving element, the preset angle
Ranging from 50 ° to 70 °, preferably 60 ° of degree.
4. equipment according to claim 1, which is characterized in that be laid out between the detection module using staged.
5. equipment according to claim 1, which is characterized in that the circuit module includes：
Detection circuit exports different voltage for the varying strength of light received in response to the light receiving element；
Micro control unit is used for：
In the case where the voltage of detection circuit output is more than preset value, output represents to indicate anhydrous indication signal；With
And
In the case where the voltage of detection circuit output is not more than the preset value, the instruction that output represents instruction and has water is believed
Number.
6. equipment according to claim 5, which is characterized in that the detection circuit includes：
The power supply and first resistor being connected in series with the photocell；And
The second resistance being connected in series with the light receiving element.
7. equipment according to claim 6, which is characterized in that the detection circuit further includes：
The wave filter for being connected in parallel with the second resistance and being made of capacitance and resistance.
8. equipment according to claim 1, which is characterized in that the equipment further includes：
Display device, the control device are additionally operable to the water position status that the display device is controlled to show the water box；And/or
Suggestion device, the control device are additionally operable to, in the case where the water level of the water box reaches early warning value, carry described in control
Showing device sends out prompting.
9. equipment according to claim 1, which is characterized in that the detection module is infrared tube, the light emitting member
Part is infrared-emitting diode, and the light receiving element is infrared receiving diode.
10. a kind of steam oven, which is characterized in that the steam oven is included according to any one claim in claim 1 to 9
The water level detecting equipment for steam oven.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810064923.1A CN108267193A (en) | 2018-01-23 | 2018-01-23 | For the water level detecting equipment and steam oven of steam oven |
| PCT/CN2018/110851 WO2019144655A1 (en) | 2018-01-23 | 2018-10-18 | Water level detection apparatus and method for steam boiler, and steam boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810064923.1A CN108267193A (en) | 2018-01-23 | 2018-01-23 | For the water level detecting equipment and steam oven of steam oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108267193A true CN108267193A (en) | 2018-07-10 |
Family
ID=62776291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810064923.1A Pending CN108267193A (en) | 2018-01-23 | 2018-01-23 | For the water level detecting equipment and steam oven of steam oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108267193A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019144655A1 (en) * | 2018-01-23 | 2019-08-01 | 广东美的厨房电器制造有限公司 | Water level detection apparatus and method for steam boiler, and steam boiler |
| CN110231839A (en) * | 2019-06-28 | 2019-09-13 | 苏州优德通力科技有限公司 | A kind of device controlled with infrared ray self-identifying Liquid level and ultra low water level |
| CN113854816A (en) * | 2021-09-22 | 2021-12-31 | 华帝股份有限公司 | Evaporator water level detection method and circuit and kitchen electrical equipment |
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| CN113854816A (en) * | 2021-09-22 | 2021-12-31 | 华帝股份有限公司 | Evaporator water level detection method and circuit and kitchen electrical equipment |
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Application publication date: 20180710 |