CN112127097A - Liquid level detection device, control method, steam box assembly and washing machine - Google Patents
Liquid level detection device, control method, steam box assembly and washing machine Download PDFInfo
- Publication number
- CN112127097A CN112127097A CN202010828321.6A CN202010828321A CN112127097A CN 112127097 A CN112127097 A CN 112127097A CN 202010828321 A CN202010828321 A CN 202010828321A CN 112127097 A CN112127097 A CN 112127097A
- Authority
- CN
- China
- Prior art keywords
- power supply
- elastic sheet
- probe
- level detection
- state
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005406 washing Methods 0.000 title claims abstract description 9
- 239000000523 sample Substances 0.000 claims abstract description 94
- 238000001179 sorption measurement Methods 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 2
- 239000012634 fragment Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
- D06F33/43—Control of cleaning or disinfection of washing machine parts, e.g. of tubs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/04—Heat
- A61L2/06—Hot gas
- A61L2/07—Steam
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/24—Apparatus using programmed or automatic operation
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
-
- D06F39/40—
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
- A61L2202/20—Targets to be treated
- A61L2202/26—Textiles, e.g. towels, beds, cloths
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/60—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to auxiliary conditioning or finishing agents, e.g. filling level of perfume tanks
- D06F2103/62—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to auxiliary conditioning or finishing agents, e.g. filling level of perfume tanks related to systems for water or steam used for conditioning or finishing
Abstract
The invention provides a liquid level detection device, a control method, a steam box assembly and a washing machine. Liquid level detection apparatus comprising: a first probe and a second probe; a controller, comprising: the first access end is connected with the first probe; the second access end is connected with the second probe; the first power supply connecting end and the second power supply connecting end are respectively and simultaneously connected with the positive pole and the negative pole of the power supply; the switching mechanism is electrically connected with the first access end and the second access end and is also connected with the first power supply connecting end or the second power supply connecting end, when the switching mechanism is connected with the first power supply connecting end, the first probe is connected with the positive electrode of the power supply, and the second probe is connected with the negative electrode of the power supply; when the switching mechanism is connected with the second power supply connecting end, the first probe is connected with the negative electrode of the power supply, and the second probe is connected with the positive electrode of the power supply. The invention can prolong the service life of the probe.
Description
Technical Field
The invention relates to the technical field of liquid level detection, in particular to a liquid level detection device, a control method, a steam box assembly and a washing machine.
Background
The liquid level detection device of the steam box of the existing washing machine mainly adopts a liquid level probe or a liquid level sensor. Because the liquid level probe is adopted for detection, the conductivity of water is utilized, and when the water level is higher than the lowest point of the probe, the two probes are mutually conducted. In actual use, the water level is basically higher than the lowest point of the probes, so that the two probes are always conducted to generate the electrolytic reaction of water. In long-term use, the probe connected with the positive electrode is corroded, and the probe connected with the negative electrode adsorbs positive charge ions such as calcium and magnesium, so that a layer of dirt is attached. Resulting in shortened life of the liquid level probe and secondary contamination of the water after entering the steam box. Aiming at the problems, a descaling method for a liquid level probe is provided to solve the problems caused by the electrolytic reaction of the probe.
Disclosure of Invention
In view of the above, the present invention provides a liquid level detection device, a control method, a steam box assembly and a washing machine, which are at least used for solving the technical problem that a probe in the prior art is easily corroded, and specifically:
in a first aspect, the present invention provides a liquid level detection apparatus comprising:
a first probe and a second probe;
a controller, comprising:
the first access end is connected with the first probe;
the second access end is connected with the second probe;
the first power supply connecting end and the second power supply connecting end are respectively and simultaneously connected with the positive pole and the negative pole of the power supply;
a switching mechanism electrically connected to the first and second inlet ends and also connected to the first or second power connection end,
when the switching mechanism is connected with the first power supply connecting end, the first probe is connected with the positive electrode of a power supply, and the second probe is connected with the negative electrode of the power supply;
when the switching mechanism is connected with the second power supply connecting end, the first probe is connected with the negative electrode of the power supply, and the second probe is connected with the positive electrode of the power supply.
In a further alternative,
the first power supply connecting end comprises a first positive connecting point and a first negative connecting point, the first positive connecting point is connected with the positive electrode of the power supply, and the first negative connecting point is connected with the negative electrode of the power supply;
the second power connection end comprises a second positive connection point and a second negative connection point, the second positive connection point is connected with the positive pole of the power supply, and the second negative connection point is connected with the negative pole of the power supply.
Further optionally, the switching mechanism comprises a first resilient tab and a second resilient tab,
one end of the first elastic sheet is fixedly connected with the first access end, the other end of the first elastic sheet is connected with the first positive connecting point in a first state, and the other end of the first elastic sheet is connected with the second negative connecting point in a second state;
one end of the second elastic sheet is fixedly connected with the second access end, the other end of the second elastic sheet is connected with the first negative electrode connecting point in a first state, and the other end of the second elastic sheet is connected with the second positive electrode connecting point in a second state;
the elastic piece structure further comprises a driving part, wherein the driving part provides driving force to enable the first elastic piece and the second elastic piece to be in a first state or a second state.
Further optionally, the first resilient tab and the second resilient tab are configured as conductive structures having elasticity.
In a further alternative,
the driving part comprises an electromagnet and an adsorption block, the adsorption block is arranged on the first elastic sheet and the second elastic sheet, the adsorption block is connected with the first elastic sheet and the second elastic sheet in an insulation way,
when the electromagnet is electrified, the adsorption block is adsorbed, and the first elastic sheet and the second elastic sheet move along with the adsorption block, so that the first elastic sheet and the second elastic sheet enter a second state from a first state; alternatively, the first and second electrodes may be,
when the electromagnet is electrified, the adsorption block is adsorbed, and the first elastic sheet and the second elastic sheet move along with the adsorption block, so that the first elastic sheet and the second elastic sheet enter a first state from a second state.
Further optionally, one adsorption block is arranged, and the first elastic sheet and the second elastic sheet are connected with the adsorption block at the same time; alternatively, the first and second electrodes may be,
the adsorption blocks are arranged in two numbers, and the first elastic sheet and the second elastic sheet are respectively provided with one adsorption block.
Further optionally, the controller comprises a housing comprising a bottom shell and an end cap covering the bottom shell forming a cavity therebetween,
the first access end and the second access end are arranged on the bottom shell;
the first elastic sheet and the second elastic sheet are arranged in the cavity and are respectively connected with the first access end and the second access end;
the first power supply connecting end is arranged on the end cover, the second power supply connecting end is arranged on the bottom shell, and the first power supply connecting end and the second power supply connecting end are arranged oppositely;
the electromagnet is arranged on the bottom shell and is positioned at a position close to the second power supply connecting end.
In a second aspect, the present invention provides a control method of the above liquid level detection apparatus, including:
the first probe and the second probe are energized,
when the working time is longer than the set time t, the controller acts to switch the connection state of the first probe and the second probe with the positive electrode and the negative electrode of the power supply,
the above-described operations are performed periodically.
In a third aspect, the present invention provides a steam box assembly comprising
The steam box is provided with a steam box,
in the liquid level detection device, the first probe and the second probe extend into the steam box and are used for detecting the water level in the steam box.
In a fourth aspect, the present invention provides a washing machine comprising the above steam box assembly.
According to the invention, the connection states of the first probe and the second probe with the positive electrode and the negative electrode of the power supply can be switched through the controller, so that dirt attached to the probes can fall off and be drained along with water, the electrolytic reaction is inhibited, the corrosion speed of the probes is reduced, and the service lives of the probes are prolonged.
Drawings
The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.
FIG. 1 shows a schematic cross-sectional view (without probe) of a liquid level detection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an end cover and an elastic sheet of the liquid level detection device according to the embodiment of the invention;
FIG. 3 shows an exploded view of a vapor box assembly according to an embodiment of the invention;
FIG. 4 shows a control flow chart of the liquid level detection device according to the embodiment of the invention.
In the figure:
11. a bottom case; 12. an end cap; 21. a first spring plate; 22. a second elastic sheet; 31. a first power connection terminal; 311. a first positive connection point; 312. a first negative connection point; 32. a second power connection terminal; 41. an electromagnet; 42. an adsorption block; 51. a first probe; 52. a second probe; 61. a lower cover; 62. an upper cover; 63. a steam outlet; 7. a heater.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
According to the invention, the connection states of the first probe and the second probe with the positive electrode and the negative electrode of the power supply can be switched through the controller, so that dirt attached to the probes can fall off and be drained along with water, the electrolytic reaction is inhibited, the corrosion speed of the probes is reduced, and the service lives of the probes are prolonged. The present invention will be described in detail with reference to specific examples.
The present invention provides a liquid level detection device, as shown in fig. 1, 2, and 3, comprising: a first probe 51, a second probe 52; a controller, comprising: a first access end connected to the first probe 51, preferably, the first access end is electrically connected to the first probe 51 through a wire, so as to facilitate installation of the first probe 51; a second access terminal connected to the second probe 52, preferably, the second access terminal is electrically connected to the second probe 52 through a wire, so as to facilitate the installation of the second probe 52; the first power supply connection end 31 and the second power supply connection end 32 are respectively and simultaneously connected with the positive pole and the negative pole of the power supply, namely the first power supply connection end 31 is simultaneously connected with the positive pole and the negative pole of the power supply, and the second power supply connection end 32 is also simultaneously connected with the positive pole and the negative pole of the power supply; the switching mechanism is electrically connected with the first access end and the second access end and is also connected with the first power supply connecting end 31 or the second power supply connecting end 32, when the switching mechanism is connected with the first power supply connecting end 31, the first probe 51 is connected with the positive electrode of the power supply, and the second probe 52 is connected with the negative electrode of the power supply; when the switching mechanism is connected to the second power connection terminal 32, the first probe 51 is connected to the negative electrode of the power supply, and the second probe 52 is connected to the positive electrode of the power supply.
In particular, the amount of the solvent to be used,
as shown in fig. 2, the first power connection terminal 31 includes a first positive connection point 311 and a first negative connection point 312, the first positive connection point 311 is connected to the positive power supply, and the first negative connection point 312 is connected to the negative power supply;
the second power connection 32 comprises a second positive connection point connected to the positive power supply and a second negative connection point connected to the negative power supply.
The switching mechanism includes a first elastic sheet 21 and a second elastic sheet 22, the first elastic sheet 21 and the second elastic sheet 22 are configured to be conductive structures with elasticity, preferably metal sheets with elasticity and good conductivity, and the first elastic sheet 21 and the second elastic sheet 22 are arranged independently.
One end of the first elastic sheet 21 is fixedly connected with the first access end, and the other end is provided with a conductive contact which is electrically connected with the first positive connection point 311 in the first state and electrically connected with the second negative connection point in the second state; one end of the second elastic sheet 22 is fixedly connected with the second access end, and the other end is provided with a conductive contact which is electrically connected with the first negative connection point 312 in the first state and electrically connected with the second positive connection point in the second state; the elastic piece structure further comprises a driving part, wherein the driving part provides driving force to enable the first elastic piece 21 and the second elastic piece 22 to be in a first state or a second state.
The driving component includes an electromagnet 41 and an adsorption block 42, the adsorption block 42 is disposed on the first elastic sheet 21 and the second elastic sheet 22, the adsorption block 42 is connected with the first elastic sheet 21 and the second elastic sheet 22 in an insulating manner, and preferably, the adsorption block 42 is a structure capable of being magnetically adsorbed, for example, an iron block, a permanent magnet, and the like. One adsorption block 42 is arranged, and the first elastic sheet 21 and the second elastic sheet 22 are simultaneously connected with the adsorption block 42; or, two adsorption blocks 42 are provided, and one adsorption block 42 is provided on each of the first elastic sheet 21 and the second elastic sheet 22.
When the electromagnet 41 is electrified, the adsorption block 42 is adsorbed, and the first elastic sheet 21 and the second elastic sheet 22 move along with the adsorption block 42, so that the first elastic sheet 21 and the second elastic sheet 22 enter a second state from a first state; or, when the electromagnet 41 is energized, the adsorption block 42 is adsorbed, and the first elastic sheet 21 and the second elastic sheet 22 move along with the adsorption block 42, so that the first elastic sheet 21 and the second elastic sheet 22 enter the first state from the second state.
In this embodiment, when the electro-magnet 41 cuts off the power supply, first shell fragment 21 and second shell fragment 22 all are connected with first power connection 31 electricity, produce magnetic force when electro-magnet 41 circular telegram, inhale sound and adsorb piece 42, along with magnetic force increase, adsorb the piece 42 and remove to the direction that is close to electro-magnet 41 to drive first shell fragment 21 and second shell fragment 22 and take place elastic deformation, when adsorbing piece 42 and being adsorbed on electro-magnet 41, first shell fragment 21 and second shell fragment 22 contact and realize the electricity and connect with second power connection 32. After the electromagnet 41 is powered off again, the first elastic sheet 21 and the second elastic sheet 22 recover to the original state under the action of the elastic force, and are in contact with the first power connection end 31 to realize electrical connection.
Preferably, the controller comprises a housing, the housing comprises a bottom shell 11 and an end cover 12, the end cover 12 is covered on the bottom shell 11, a cavity is formed between the bottom shell 11 and the end cover, and the controller is preferably a closed air conditioner and can prevent water, dust and the like from entering.
The first access end and the second access end are arranged on the bottom shell 11, and a part of each of the first access end and the second access end penetrates through the bottom shell 11 and is located on the outer side of the bottom shell 11 and is used for being electrically connected with the probe, and a part of each of the first access end and the second access end penetrates through the bottom shell 11 and is located on the inner side of the bottom shell 11 and is used for being electrically connected with the first elastic piece 21 and the second elastic piece 22.
The first elastic sheet 21 and the second elastic sheet 22 are arranged in the cavity and are respectively connected with the first access end and the second access end, the end part of the first elastic sheet 21 connected with the first connecting end is fixed on the bottom shell 11, and the end part of the second elastic sheet 22 connected with the second access end is fixed on the bottom shell 11.
Preferably, the first power connection terminal 31 is disposed on the end cover 12, the second power connection terminal 32 is disposed on the bottom case 11, and the first power connection terminal 31 and the second power connection terminal 32 are disposed opposite to each other; the electromagnet 41 is provided on the bottom case 11 at a position close to the second power connection terminal 32.
The present invention further provides a control method of the liquid level detection apparatus, as shown in fig. 4, including:
the first probe 51 and the second probe 52 are energized,
when the working time is longer than the set time t, the controller acts to switch the connection state of the first probe 51 and the second probe 52 with the positive electrode and the negative electrode of the power supply,
the above-described operations are performed periodically.
Specifically, when the first probe 51 and the second probe 52 simultaneously extend below the liquid level of the liquid to be measured, the two probes are energized, and the operation time is started to be counted.
When the timing reaches time t, the controller acts, the electromagnet 41 is electrified, the first probe 51 and the second probe 52 are in contact with the second power supply connecting end 32, and when the timing reaches 2t, the controller acts again, the electromagnet 41 is powered off, and the first probe 51 and the second probe 52 are in contact with the first power supply connecting end 31. The controller executes a cycle of operations, i.e., each time nt is counted and n is an integer.
According to the invention, the connection state of the first probe 51 and the second probe 52 with the positive electrode and the negative electrode of the power supply is switched by the electromagnet 41, so that the situation that the same probe is connected with the positive electrode or the negative electrode for a long time to cause serious corrosion or excessive dirt adhesion is avoided. So as to achieve the effect of prolonging the service life of the probe.
The invention also provides a steam box assembly, as shown in fig. 3, comprising a steam box and the liquid level detection device, wherein the steam box comprises a lower cover 61 and an upper cover 62, the lower cover 61 and the upper cover 62 are sealed together to form a cavity inside, the lower cover 61 and/or the upper cover 62 are/is provided with a water inlet and a water outlet, and the upper cover 62 is provided with a steam outlet 63. The water heater further comprises a heater 7, wherein the heater 7 is arranged in the cavity and used for heating water in the cavity to generate steam.
The upper cover 62 is provided with two probe mounting holes, and the first probe 51 and the second probe 52 respectively extend into the cavity through the two probe mounting holes for detecting the water level in the cavity.
The invention also provides a washing machine which comprises the steam box assembly, and steam is generated by the steam box assembly and is used for sterilizing the washed clothes.
Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A liquid level detection device characterized in that: the method comprises the following steps:
a first probe (51) and a second probe (52);
a controller, comprising:
a first access end connected to the first probe (51);
a second access end connected to the second probe (52);
the power supply comprises a first power supply connecting end (31) and a second power supply connecting end (32), wherein the first power supply connecting end (31) and the second power supply connecting end (32) are respectively connected with the positive pole and the negative pole of a power supply;
a switching mechanism electrically connected to the first and second input ends and selectively connected to the first power connection end (31) or the second power connection end (32),
when the switching mechanism is connected with the first power supply connection end (31), the first probe (51) is connected with a positive power supply electrode, and the second probe (52) is connected with a negative power supply electrode;
when the switching mechanism is connected with the second power supply connection end (32), the first probe (51) is connected with the negative pole of a power supply, and the second probe (52) is connected with the positive pole of the power supply.
2. The fluid level detection apparatus of claim 1, wherein:
the first power supply connection end (31) comprises a first positive connection point and a first negative connection point, the first positive connection point is connected with a positive electrode of a power supply, and the first negative connection point is connected with a negative electrode of the power supply;
the second power connection end (32) comprises a second positive connection point and a second negative connection point, the second positive connection point is connected with the positive pole of the power supply, and the second negative connection point is connected with the negative pole of the power supply.
3. The liquid level detection apparatus of claim 2, wherein:
the switching mechanism comprises a first elastic sheet (21) and a second elastic sheet (22),
one end of the first elastic sheet (21) is fixedly connected with the first access end, the other end of the first elastic sheet is connected with the first positive connecting point in a first state, and is connected with the second negative connecting point in a second state;
one end of the second elastic sheet (22) is fixedly connected with the second access end, the other end of the second elastic sheet is connected with the first negative electrode connecting point in a first state, and the other end of the second elastic sheet is connected with the second positive electrode connecting point in a second state;
the elastic piece fixing device further comprises a driving part, wherein the driving part provides driving force to enable the first elastic piece (21) and the second elastic piece (22) to be in a first state or a second state.
4. A liquid level detection apparatus as claimed in claim 3, wherein: the first elastic sheet (21) and the second elastic sheet (22) are constructed into elastic conductive structures.
5. A liquid level detection apparatus as claimed in claim 3, wherein:
the driving component comprises an electromagnet and an adsorption block, the adsorption block is arranged on the first elastic sheet (21) and the second elastic sheet (22), the adsorption block is connected with the first elastic sheet (21) and the second elastic sheet (22) in an insulation manner,
when the electromagnet is electrified, the adsorption block is adsorbed, and the first elastic sheet (21) and the second elastic sheet (22) move along with the adsorption block, so that the first elastic sheet (21) and the second elastic sheet (22) enter a second state from a first state; alternatively, the first and second electrodes may be,
when the electromagnet is electrified, the adsorption block is adsorbed, and the first elastic sheet (21) and the second elastic sheet (22) move along with the adsorption block, so that the first elastic sheet (21) and the second elastic sheet (22) enter a first state from a second state.
6. The fluid level detection apparatus of claim 5, wherein: one adsorption block is arranged, and the first elastic sheet (21) and the second elastic sheet (22) are simultaneously connected with the adsorption block; alternatively, the first and second electrodes may be,
the number of the adsorption blocks is two, and the first elastic sheet (21) and the second elastic sheet (22) are respectively provided with one adsorption block.
7. The liquid level detection apparatus according to claim 5 or 6, wherein: the controller comprises a shell, the shell comprises a bottom shell and an end cover, the end cover is covered on the bottom shell, a cavity is formed between the bottom shell and the end cover,
the first access end and the second access end are arranged on the bottom shell;
the first elastic sheet (21) and the second elastic sheet (22) are arranged in the cavity and are respectively connected with the first access end and the second access end;
the first power supply connecting end (31) is arranged on the end cover, the second power supply connecting end (32) is arranged on the bottom shell, and the first power supply connecting end (31) and the second power supply connecting end (32) are oppositely arranged;
the electromagnet is arranged on the bottom shell and is positioned close to the second power supply connecting end (32).
8. A method of controlling a liquid level detection apparatus according to any one of claims 1 to 7, characterized by: the method comprises the following steps:
the first probe (51) and the second probe (52) are energized,
when the working time is longer than the set time t, the controller acts to switch the connection state of the first probe (51) and the second probe (52) with the positive electrode and the negative electrode of the power supply,
the above-described operations are performed periodically.
9. A steam box assembly, characterized in that: comprises that
The steam box is provided with a steam box,
the liquid level detection apparatus of any one of claims 1-7, the first probe (51) and the second probe (52) extending into the interior of the steam box for detecting a water level within the steam box.
10. A washing machine comprising the steam box assembly of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010828321.6A CN112127097B (en) | 2020-08-17 | 2020-08-17 | Liquid level detection device, control method, steam box assembly and washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010828321.6A CN112127097B (en) | 2020-08-17 | 2020-08-17 | Liquid level detection device, control method, steam box assembly and washing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112127097A true CN112127097A (en) | 2020-12-25 |
| CN112127097B CN112127097B (en) | 2021-09-28 |
Family
ID=73851714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010828321.6A Active CN112127097B (en) | 2020-08-17 | 2020-08-17 | Liquid level detection device, control method, steam box assembly and washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112127097B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114642383A (en) * | 2022-04-22 | 2022-06-21 | 北京顺造科技有限公司 | Surface cleaning device and method for operating a surface cleaning device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2881431Y (en) * | 2006-02-13 | 2007-03-21 | 余伯坚 | Electric heating boiler |
| CN201311315Y (en) * | 2008-12-06 | 2009-09-16 | 俞险峰 | Non-contact type inductance-capacitance liquid level sensor |
| US20110320133A1 (en) * | 2003-06-24 | 2011-12-29 | Ecolab Inc. | Concentration monitor |
| CN203187995U (en) * | 2013-04-09 | 2013-09-11 | 浙江月立电器有限公司 | Steam and dry iron automatically sensing water level |
| CN203893911U (en) * | 2014-06-26 | 2014-10-22 | 广东瑞德智能科技股份有限公司 | Water level detection circuit |
| CN105088689A (en) * | 2014-04-22 | 2015-11-25 | 无锡小天鹅股份有限公司 | Washing machine and washing agent storage system used for washing machine |
| CN105371921A (en) * | 2015-12-21 | 2016-03-02 | 珠海格力电器股份有限公司 | Liquid level detection circuit and device |
| CN106609872A (en) * | 2015-10-26 | 2017-05-03 | 德阳九鼎智远知识产权运营有限公司 | Automatic one-way valve |
| CN209355107U (en) * | 2018-12-22 | 2019-09-06 | 江苏承煦电气集团有限公司 | A kind of selfreparing road lamp cap device |
-
2020
- 2020-08-17 CN CN202010828321.6A patent/CN112127097B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110320133A1 (en) * | 2003-06-24 | 2011-12-29 | Ecolab Inc. | Concentration monitor |
| CN2881431Y (en) * | 2006-02-13 | 2007-03-21 | 余伯坚 | Electric heating boiler |
| CN201311315Y (en) * | 2008-12-06 | 2009-09-16 | 俞险峰 | Non-contact type inductance-capacitance liquid level sensor |
| CN203187995U (en) * | 2013-04-09 | 2013-09-11 | 浙江月立电器有限公司 | Steam and dry iron automatically sensing water level |
| CN105088689A (en) * | 2014-04-22 | 2015-11-25 | 无锡小天鹅股份有限公司 | Washing machine and washing agent storage system used for washing machine |
| CN203893911U (en) * | 2014-06-26 | 2014-10-22 | 广东瑞德智能科技股份有限公司 | Water level detection circuit |
| CN106609872A (en) * | 2015-10-26 | 2017-05-03 | 德阳九鼎智远知识产权运营有限公司 | Automatic one-way valve |
| CN105371921A (en) * | 2015-12-21 | 2016-03-02 | 珠海格力电器股份有限公司 | Liquid level detection circuit and device |
| CN209355107U (en) * | 2018-12-22 | 2019-09-06 | 江苏承煦电气集团有限公司 | A kind of selfreparing road lamp cap device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114642383A (en) * | 2022-04-22 | 2022-06-21 | 北京顺造科技有限公司 | Surface cleaning device and method for operating a surface cleaning device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112127097B (en) | 2021-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112127097B (en) | Liquid level detection device, control method, steam box assembly and washing machine | |
| KR920003529B1 (en) | Air cleaner | |
| CN216569806U (en) | Sewage tank with detect function | |
| CN213027149U (en) | Intelligent protection switch | |
| CN208422788U (en) | A kind of multilink relay of waterproof antidetonation | |
| CN209388963U (en) | Relay | |
| CN214300822U (en) | Shell structure of steam generator | |
| CN212533452U (en) | Heating assembly for steam generator, steam generator and washing machine | |
| CN204344970U (en) | Automatically cleaning gate valve | |
| JP2003042330A (en) | Driving device for fluid control valve, and fuel cell power generating device | |
| JP2001162283A (en) | Ion removing apparatus | |
| CN217655817U (en) | Three-phase AC vacuum contactor | |
| CN218829084U (en) | Abnormal protection device for DC-DC power supply | |
| JP2005172260A (en) | Air conditioner | |
| CN216517398U (en) | Electromagnet for cabinet door locking structure of disinfection cabinet | |
| CN209118988U (en) | A kind of three-phase alternating current vacuum contactor | |
| CN219626557U (en) | Energy-saving low-noise contactor | |
| CN217057864U (en) | Just, dress formula air purifier filter core | |
| CN217932443U (en) | Industrial timer for detecting working time of equipment | |
| CN215412192U (en) | Part mounting structure | |
| CN218482157U (en) | Relay, control device and control circuit module | |
| CN109119290B (en) | contactor | |
| CN209544253U (en) | A kind of novel Mobyneb A.C. contactor | |
| CN210984607U (en) | Switch and household appliance | |
| JPS6014086Y2 (en) | steam generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |