CN106764996A - A kind of steam generation device and use have the steam box of the steam generation device - Google Patents
A kind of steam generation device and use have the steam box of the steam generation device Download PDFInfo
- Publication number
- CN106764996A CN106764996A CN201611170610.1A CN201611170610A CN106764996A CN 106764996 A CN106764996 A CN 106764996A CN 201611170610 A CN201611170610 A CN 201611170610A CN 106764996 A CN106764996 A CN 106764996A
- Authority
- CN
- China
- Prior art keywords
- electrode
- water level
- level detecting
- water container
- generation device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
-
- 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
- A47J2027/043—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels for cooking food in steam
Abstract
The closed water container of electric heater is provided with the present invention relates to a kind of steam generation device, including bottom, the high water level detecting electrode for detecting water level in closed water container in closed water container is arranged on, it is characterised in that：The closed water container top is provided with the enclosed electrode protection chamber connected with closed water container, enclosed electrode protection is provided with certain amount of air in chamber, high water level detecting electrode is protected in chamber and closed water container through enclosed electrode is arranged on, and the low side of high water level detecting electrode is located in closed water container.Compared with prior art, the advantage of the invention is that：Chamber is protected by setting enclosed electrode at the top of closed water container, so as to increase electrode to the creep age distance between steam generator metal shell (second electrode), the probability for undesirable electrode detection loop occur also can be effectively reduced by extending creep age distance such that it is able to more accurately and reliably, widely adapt to from ultra-pure water to the level sensing of all water quality of superhard water.
Description
Technical field
The present invention relates to a kind of steam generation device and using the steam box for having the steam generation device.
Background technology
Whether by having water in electrode detection water level, or detection container, it is widely used in small household appliances, such as soya-bean milk
The anti-flow electrode of mechanical, electrical rice cooker, fruit juice level detection of commercial fruit juice equipment etc. are useful.It is traditional by electrode detection
All there is more use limitation in water level or the solution for whether having water：Soy bean milk making machine, electric cooker have to cleaning using complete every time
Electrode, commercial fruit juice equipment can only be used etc. under the liquid environment rich in electrolyte.
The steam box of presently commercially available use electrode inspection water level or other with the cooking equipments for steaming function, have to water quality compared with
High request, i.e., can not use pure water or high hardness water, and this causes that the use of steam box is subject to a definite limitation, is brought not to user
It is convenient.
With the embedded cooking equipment for steaming function, the principle of its generation steam is：The water of water tank pass sequentially through two-way pump,
Magnetic valve, produces steam, the steam of generation to be cooked into cooking space into heater.It is unnecessary that culinary art terminates post-heater
Water again back through magnetic valve, two-way pump, be recovered to water tank, the difficult point of this system be how low cost, accurate reliable control
The water level of heater processed.Water lev el control is bad to occur following two situations：One when be very few heater water can not and
Shi Jiashui occurs heater dry combustion method phenomenon, and dry combustion method occurs niff, while influenceing heater life, heater easily to burn
It is bad；Two is that when adding water excessive, water spills into cooking space, or even water soaks user family's cabinet etc. from cooking space outflow.
In the existing cooking equipment with steaming function, the water level of heater is controlled mainly by following two modes：
First way：Control heater water level is simulated by program, the method is when being added water according to pump capacity control
Between, a temperature sensor is arranged in heater base in addition, the temperature that adds water is obtained by experiment test, when sensor temperature is high
In add water temperature when just add water, it is to avoid there is dry combustion method phenomenon, but because the feedback of temperature sensor signal occurs hysteresis quality,
Therefore heater occurs dry combustion method phenomenon in the same old way；The change of other pump capacity, the individual difference fluctuation of heater power, also
The water hardness easy scaling of local heater high, has incrustation scale that heater can be caused to conduct heat abnormal, can equally cause this kind of
Method is not very reliable, and dry combustion method phenomenon is not avoided that, dry combustion method smell occurs, and have considerable influence to heater life.
The second way：One water box connected with heater of design, by water box and heater both sides water surface elevation one
Cause principle controlling water level；Then buoy is provided with water box, it is (logical that the position signalling that liquid level fluctuates is converted into electric signal
It is often using magnet tongue tube principle), so as to control the height of water level in heater；This mode is also easily subject to water quality shadow
Ring, when the water hardness is high, the easy scaling of heater base, the water level in such water box and heater, be substantially it is inconsistent,
Also heater is easily made dry combustion method phenomenon occur.
The content of the invention
Primary technical problem to be solved by this invention is that one kind can accurately and reliably detect at least two different heights position
Put water level and adapt to the steam generation device of all types water quality.
Further technical problem to be solved of the invention is to provide a kind of steam generation device can accurately and reliably be detected
Water level and adapt to the steam box of all types water quality.
The present invention solve technical scheme that above-mentioned primary technical problem used for：A kind of steam generation device, including bottom
Portion is provided with the closed water container of electric heater, be arranged in closed water container for detecting water level in closed water container
High water level detecting electrode, it is characterised in that：The high water level detecting electrode is provided with least two, the bottom of all high water level detecting electrodes
It is respectively positioned in closed water container, the bottom of at least two high water level detecting electrodes is located at height in closed water container not phase
Together；The closed water container top is provided with the enclosed electrode protection chamber connected with closed water container, enclosed electrode protection chamber
Certain amount of air is inside provided with, high water level detecting electrode is protected in chamber and closed water container through enclosed electrode is arranged on.
As improvement, connected by electrode hole between the closed water container and enclosed electrode protection chamber, electrode hole
Number is identical with the number of high water level detecting electrode, and each high water level detecting electrode is arranged in a corresponding electrode hole respectively.
Under the effect of electrode cavity air pressure inside, be effectively reduced closed water container add water it is incrustation scale etc. is miscellaneous after excessive or its internal boiling water
Matter brings enclosed electrode protection chamber into so that enclosed electrode protection forms undesirable electrode detection loop in chamber, causes water level to be examined
Survey electrode failure.
Improve again, connected by electrode hole between the closed water container and enclosed electrode protection chamber, the water level inspection
Survey electrode to be arranged in former electrodes hole, the distance between the high water level detecting electrode outer wall and electrode hole inwall are arrived for 1mm
50mm, distance closely easily forms moisture film very much between the two, so as to undesirable electrode detection loop occur, water boils if too far away
Easily make to bring the impurity such as incrustation scale into enclosed electrode protection chamber after rising, can also cause that enclosed electrode is protected in chamber and form undesirable
Electrode detection loop, causes electrode failure.
Improve again, the closed water container has the bottom basin and closure of opening located at the upper of bottom basin oral area including top
Lid, the electrode hole is on upper lid.
Catch of the circle positioned at high water level detecting electrode periphery is provided with the closed water container, can effectively prevent water from boiling
Influence of the rear water surface big ups and downs to water level detecting is risen, water level detecting precision is improved.
The high water level detecting electrode is provided with three, wherein the first high water level detecting electrode and the second high water level detecting electrode are used respectively
In the first water level and the second water level in closed water container is measured, the 3rd high water level detecting electrode bottom is arranged on the closed appearance that is filled with water
In device, the top ground of the 3rd high water level detecting electrode.
The high water level detecting electrode can also be provided with two, and enclosed electrode protection chamber is wire chamber, and ground connection.
The present invention solve technical scheme that above-mentioned further technical problem used for：A kind of steam box, including cooking cavity, with
Steam generation device that cooking cavity is connected, for conveying steam to cooking cavity, is connected by water pump with steam generation device
Water tank, it is characterised in that：The steam generation device uses the steam generation device of said structure.
Used as improvement, steam box of the invention also includes water level detection circuit, and the water level detection circuit includes that PWM letters can be provided
Number MCU controllers, capacitance, the first build-out resistor and the second build-out resistor, the top of the high water level detecting electrode passes through
Enclosed electrode protection be connected behind chamber with the first end of capacitance, the second end of capacitance and the first end of the first build-out resistor
Connection, the second end of the first build-out resistor is connected with the pwm signal output end of MCU controllers, the first end of the second build-out resistor
It is connected with the second end of capacitance, the second end of the second build-out resistor is connected with MCU controllers detection input signal；It is described close
Water container is closed for canister, and the canister is grounded.
Compared with prior art, the advantage of the invention is that：Prevented by setting enclosed electrode at the top of closed water container
Shield chamber, by high water level detecting electrode through being arranged in enclosed electrode protection chamber and closed water container, arrives so as to increase electrode
Creep age distance between steam generator metal shell (second electrode), appearance also can be effectively reduced not by extending creep age distance
Expect the probability in electrode detection loop such that it is able to more accurately and reliably, widely adapt to all from ultra-pure water to superhard water
The level sensing of water quality, breaks water quality limitation, provides the user more preferable operating experience；By setting multiple high water level detecting electrodes
Such that it is able to detect different height water level.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of steam generation device in the embodiment of the present invention；
Fig. 2 is the internal structure schematic diagram of steam generation device in the embodiment of the present invention；
Fig. 3 is water level detecting circuit theory diagrams in the embodiment of the present invention；
Fig. 4 is steam box internal structure schematic diagram in the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
Steam generation device as shown in Figure 1, including bottom is provided with the closed water container of electric heater, and this is closed to be filled with water
Container has the bottom basin 1 and closure of opening located at the upper lid 2 of bottom basin oral area including top, is arranged in closed water container
For detect it is closed be filled with water hold in water level three high water level detecting electrode 3A, 3B, 3C, closed water container top be provided with it is closed
The enclosed electrode protection chamber 4 of water container connection, three electrode holes are passed through between closed water container and enclosed electrode protection chamber 4
21A, 21B, 21C are connected, and on upper lid 2, enclosed electrode protection is provided with certain amount of air, water in chamber 4 for electrode hole 21A, 21B, 21C
Through being arranged in enclosed electrode protection chamber and closed water container, three high water level detecting electrodes are each passed through position detecting electrode 3
After foregoing three electrode holes 2121A, 21B, 21C, bottom be located at closed water container in, three bottom positions of high water level detecting electrode
Differed in the height in closed water container, the top of two of which high water level detecting electrode 3A, 3B is anti-through enclosed electrode
Shield is connected behind chamber with external detection unit, and the top of another high water level detecting electrode 3A is grounded after protecting chamber through enclosed electrode.
Enclosed electrode protects chamber 4 to be connected outward except the electrode hole for having lower section and the space in addition to electrode chamber, its remaining part
Divide sealing, inside is provided with certain amount of air, its beneficial effect is, under the enclosed electrode protection air pressure inside of chamber 4 effect, effectively reduction
Closed water container adds water excessively or brings the impurity such as incrustation scale into enclosed electrode protection chamber after its internal boiling water so that sealing electricity
Pole forms undesirable electrode detection loop in protection chamber, causes electrode failure.Coordinate corresponding detection circuit realiration to closed Sheng
Water receptacle water level inside is monitored, and realizes the purpose of anti-dry.
The distance between each high water level detecting electrode 3A, 3B, 3C outer wall and corresponding electrode hole 21A, 21B, 21C inwall are
1mm to 50mm, distance is too near easily to form moisture film between the two, undesirable electrode detection loop occurs, the water if too far away
Easily make to bring the impurity such as incrustation scale into enclosed electrode protection chamber after boiling, can also cause that enclosed electrode is protected in chamber and form undesirable
Electrode detection loop, cause high water level detecting electrode to fail.
Catch 11 of the circle positioned at high water level detecting electrode periphery is provided with closed water container.
In addition, invention further provides a kind of steam box, it includes cooking cavity 5, it is being connected with cooking cavity 5, for
Cooking cavity conveys the steam generation device A of steam, and the water tank 7 connected with steam generation device by water pump 6, above-mentioned steam is produced
Device uses the steam generation device of said structure, shown in Figure 4.
In addition, above-mentioned steam box also includes water level detection circuit, the water level detection circuit includes providing the MCU of pwm signal
Controller, capacitance C1, the first build-out resistor R1 and the second build-out resistor R2, the top of the high water level detecting electrode is through close
Envelope electrode protection be connected behind chamber with the first end of capacitance C1, and the of second end of capacitance C1 and the first build-out resistor R1
One end connects, and second end of the first build-out resistor R1 is connected with the pwm signal output end of MCU controllers, the second build-out resistor R2
First end be connected with second end of capacitance C1, second end of the second build-out resistor R2 and MCU controllers detection input letter
Number end connection；The closed water container be canister, and the canister be grounded.Examined using pure AC signal as electrode
The pumping signal of survey, ensures pumping signal as far as possible without or with a small amount of direct current signal, by MCU by capacitance C1
The pwm signal that controller is provided, by the first build-out resistor R1, capacitance C1, by (such as machine of electrode → water → publicly
Metal shell) formed loop；Impedance between electrode → water → publicly is set to RV1, and works as | RV1 |>>|1/(C1·S)|
When：U (S) ≈ RV1/ (R1+RV1), U (S) are the alternating current voltage component transmission function at MCU controllers detection input signal end；By
1. above-mentioned formula is understood, as long as the appropriate R1 of selection so that R1 is fallen into the case of water in the range of the impedance value of RV1, you can spirit
Quick judges whether water loop by U (S).High water level detecting electrode 3 can be made of stainless steel, by the way that water level detecting is electric
The bottom of pole 3 is located at required water level, and then checks the water level in closed water container.
Claims (9)
1. a kind of steam generation device, including bottom is provided with the closed water container of electric heater, is arranged on closed water container
The interior high water level detecting electrode for detecting water level in closed water container, it is characterised in that：The high water level detecting electrode is provided with
At least two, the bottom of all high water level detecting electrodes is respectively positioned in closed water container, the bottom of at least two high water level detecting electrodes
The height that portion is located in closed water container is differed；The closed water container top is provided with what is connected with closed water container
Enclosed electrode protects chamber (4), and certain amount of air is provided with enclosed electrode protection chamber (4), and high water level detecting electrode is through being arranged on sealing
Electrode is protected in chamber and closed water container.
2. steam generation device according to claim 1, it is characterised in that：The closed water container is prevented with enclosed electrode
Shield is connected between chamber by electrode hole, and the number of electrode hole is identical with the number of high water level detecting electrode, each high water level detecting electrode
It is arranged in respectively in a corresponding electrode hole.
3. steam generation device according to claim 2, it is characterised in that：The high water level detecting electrode outer wall and electrode hole
The distance between inwall is 1mm to 50mm.
4. steam generation device according to claim 3, it is characterised in that：The closed water container has including top
, located at the upper lid of bottom basin oral area, the electrode hole is on upper lid for the bottom basin and closure of opening.
5. steam generation device according to claim 1, it is characterised in that：Circle position is provided with the closed water container
In the catch of high water level detecting electrode periphery.
6. steam generation device according to claim 1, it is characterised in that：The high water level detecting electrode is provided with three, its
In the first high water level detecting electrode and the second high water level detecting electrode be respectively used to measure the first water level and in closed water container
Two water levels, the 3rd high water level detecting electrode bottom is arranged in closed water container, the top ground of the 3rd high water level detecting electrode.
7. steam generation device according to claim 1, it is characterised in that：The high water level detecting electrode is provided with two, and
Enclosed electrode protection chamber is wire chamber, and is grounded.
8. a kind of steam box, including cooking cavity, steam generation device connected with cooking cavity, for conveying steam to cooking cavity,
The water tank connected with steam generation device by water pump, it is characterised in that：The steam generation device is used such as claim 1 institute
The steam generation device stated.
9. the steam box according to claim 8, it is characterised in that：Also include water level detection circuit, the water level detection circuit
MCU controllers, capacitance (C1), the first build-out resistor (R1) and the second build-out resistor (R2) including pwm signal can be provided,
The top of the high water level detecting electrode is connected after protecting chamber through enclosed electrode with the first end of capacitance (C1), capacitance
(C1) the second end is connected with the first end of the first build-out resistor (R1), and the second end and the MCU of the first build-out resistor (R1) are controlled
The pwm signal output end connection of device, the first end of the second build-out resistor (R2) is connected with the second end of capacitance (C1), and second
Second end of build-out resistor (R2) is connected with MCU controllers detection input signal；The closed water container is canister, and
The canister is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170610.1A CN106764996A (en) | 2016-12-16 | 2016-12-16 | A kind of steam generation device and use have the steam box of the steam generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170610.1A CN106764996A (en) | 2016-12-16 | 2016-12-16 | A kind of steam generation device and use have the steam box of the steam generation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106764996A true CN106764996A (en) | 2017-05-31 |
Family
ID=58892391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611170610.1A Pending CN106764996A (en) | 2016-12-16 | 2016-12-16 | A kind of steam generation device and use have the steam box of the steam generation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106764996A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107440512A (en) * | 2017-08-18 | 2017-12-08 | 浙江绍兴苏泊尔生活电器有限公司 | Anti-overflow detection method and health preserving kettle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2457505Y (en) * | 2000-12-01 | 2001-10-31 | 吴晓政 | Steam generator |
| CN2771651Y (en) * | 2005-03-03 | 2006-04-12 | 马丹 | High-pressure saturation steam generator |
| EP1883727A1 (en) * | 2005-05-23 | 2008-02-06 | LG Electronics Inc. | A structure of water level sensor for steam generator in drum washing machine |
| CN101991348A (en) * | 2010-09-21 | 2011-03-30 | 宁波方太厨具有限公司 | External tap water tank box of electric steam box |
| CN202647695U (en) * | 2012-06-12 | 2013-01-02 | 美得彼烹饪设备制造(上海)有限公司 | Water tank evaporator |
| CN204670907U (en) * | 2015-05-18 | 2015-09-30 | 宁波方太厨具有限公司 | A kind of electric steam box |
| CN105615629A (en) * | 2016-02-22 | 2016-06-01 | 北京利仁科技股份有限公司 | Steam generator communicated with water level monitoring chamber |
| CN206257642U (en) * | 2016-12-16 | 2017-06-16 | 宁波方太厨具有限公司 | A kind of steam generation device and use have the steam box of the steam generation device |
-
2016
- 2016-12-16 CN CN201611170610.1A patent/CN106764996A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2457505Y (en) * | 2000-12-01 | 2001-10-31 | 吴晓政 | Steam generator |
| CN2771651Y (en) * | 2005-03-03 | 2006-04-12 | 马丹 | High-pressure saturation steam generator |
| EP1883727A1 (en) * | 2005-05-23 | 2008-02-06 | LG Electronics Inc. | A structure of water level sensor for steam generator in drum washing machine |
| CN101991348A (en) * | 2010-09-21 | 2011-03-30 | 宁波方太厨具有限公司 | External tap water tank box of electric steam box |
| CN202647695U (en) * | 2012-06-12 | 2013-01-02 | 美得彼烹饪设备制造(上海)有限公司 | Water tank evaporator |
| CN204670907U (en) * | 2015-05-18 | 2015-09-30 | 宁波方太厨具有限公司 | A kind of electric steam box |
| CN105615629A (en) * | 2016-02-22 | 2016-06-01 | 北京利仁科技股份有限公司 | Steam generator communicated with water level monitoring chamber |
| CN206257642U (en) * | 2016-12-16 | 2017-06-16 | 宁波方太厨具有限公司 | A kind of steam generation device and use have the steam box of the steam generation device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107440512A (en) * | 2017-08-18 | 2017-12-08 | 浙江绍兴苏泊尔生活电器有限公司 | Anti-overflow detection method and health preserving kettle |
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Application publication date: 20170531 |
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