CN109497902A - A kind of the draining fault detection method and dish-washing machine of dish-washing machine - Google Patents
A kind of the draining fault detection method and dish-washing machine of dish-washing machine Download PDFInfo
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- CN109497902A CN109497902A CN201811531777.5A CN201811531777A CN109497902A CN 109497902 A CN109497902 A CN 109497902A CN 201811531777 A CN201811531777 A CN 201811531777A CN 109497902 A CN109497902 A CN 109497902A
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- draining
- pressure switch
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- washing machine
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
- A47L15/4223—Devices for water discharge, e.g. devices to prevent siphoning, non-return valves
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Washing And Drying Of Tableware (AREA)
Abstract
The invention discloses the draining fault detection methods and dish-washing machine of a kind of dish-washing machine, wherein the draining fault detection method of dish-washing machine includes: starting dish-washing machine bleeding stage；Obtain dish-washing machine bleeding stage in or bleeding stage after pressure switch state；Judge whether the draining of dish-washing machine is abnormal according to the state of pressure switch.The draining fault detection method and dish-washing machine of dish-washing machine disclosed by the invention can detect draining failure of pump in time and alarm, remind user's on-call maintenance.
Description
Technical field
The present invention relates to machine for kitchen use field, the draining fault detection method and dish-washing machine of espespecially a kind of dish-washing machine.
Background technique
It needs currently, dish-washing machine is widely used in dining room, restaurant, family etc. as a kind of warewashing equipment using all kinds of
The place of tableware improves dishwashing detergent efficiency to carry out batch washer to tableware.Existing dish-washing machine, needs in washing process
It to be discharged after sewage is intake again by draining pump and be washed again, once draining pump blocking or damage, will lead to sewage overflows machine,
Destruction is made to equipment and environment.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of draining fault detection method of dish-washing machine and wash the dishes
Machine can detect draining failure of pump in time and alarm, remind user's on-call maintenance.
In order to reach the object of the invention, in a first aspect, the present invention provides a kind of draining fault detection method of dish-washing machine,
Include:
Start dish-washing machine bleeding stage；
Obtain dish-washing machine bleeding stage in or bleeding stage after pressure switch state；
Judge whether the draining of the dish-washing machine is abnormal according to the state of the pressure switch.
Second aspect, the present invention provides a kind of dish-washing machines characterized by comprising
Cavity, for accommodating washing water；
Circulation branch road and the circulating pump for being installed on circulation branch road, the circulation branch road are connected to the cavity；
Draining branch and the draining pump for being installed on draining branch, the draining branch are connected to the cavity；
Pressure switch, for detecting circulation branch road and/or draining the hydraulic pressure in branch；
Module is obtained, for obtaining the state of pressure switch in dish-washing machine bleeding stage；
Whether judgment module, the draining for judging the dish-washing machine according to the state of the pressure switch are abnormal.
The draining fault detection method and dish-washing machine for the dish-washing machine that at least one embodiment of the invention provides, in drainage procedure
In, by bleeding stage or after bleeding stage, by detecting the state of pressure switch, judge draining whether extremely.Energy
Enough draining failure of pump of detection in time are simultaneously alarmed, and user's on-call maintenance is reminded.
In some embodiments of the embodiment of the present invention, pressure switch is located in the circulation branch road of circulating pump, can also reach
To following effect: 1, after bleeding stage, detecting the open or closed state of pressure switch, by starting circulating pump with judgement
Whether draining is abnormal.2, after bleeding stage, the open or closed state of pressure switch is detected by starting circulating pump, is being pressed
Power switchs in the open state, after allowing draining pump work x second, recycles pump work y seconds this judgment step repeatedly after n times, then
The open or closed state of secondary detection pressure switch, to judge whether draining is abnormal.
In some embodiments of the embodiment of the present invention, pressure switch is located at the draining branch road of draining pump, can also reach
To following effect: 3, drainage procedure can carry out stage by stage, and the open or close of pressure switch is detected in draining second stage
State, to judge whether draining is abnormal.4, drainage procedure can carry out stage by stage, detect pressure switch in draining second stage
Whether duration z in the open state is greater than or equal to preset duration a, to judge whether draining is abnormal.5, from draining pump work
Start timing, detection pressure switch duration m in the open state, to judge whether draining is abnormal.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with this
The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the flow diagram for the draining fault detection method that the embodiment of the present invention one provides；
Fig. 2 is the flow diagram of draining fault detection method provided by Embodiment 2 of the present invention；
Fig. 3 is the flow diagram for the draining fault detection method that the embodiment of the present invention three provides；
Fig. 4 is the flow diagram for the draining fault detection method that the embodiment of the present invention four provides；
Fig. 5 is the flow diagram for the draining fault detection method that the embodiment of the present invention five provides；
Fig. 6 is the flow diagram for the draining fault detection method that the embodiment of the present invention six provides；
Fig. 7 is that pressure switch provided in an embodiment of the present invention is located at the structural schematic diagram in the circulation branch road of circulating pump.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
Step shown in the flowchart of the accompanying drawings can be in a computer system such as a set of computer executable instructions
It executes.Also, although logical order is shown in flow charts, and it in some cases, can be to be different from herein suitable
Sequence executes shown or described step.
The embodiment of the present invention provides a kind of draining fault detection method of dish-washing machine and dish-washing machine passes through in bleeding stage
Pressure switch and circulating pump or draining pump are used in combination, to judge whether bleeding stage has exception.Draining can be detected in time
Failure of pump is simultaneously alarmed, and user's on-call maintenance is reminded.
Fig. 1 is the flow diagram for the draining fault detection method that the embodiment of the present invention one provides, as shown in Figure 1, this hair
The draining fault detection method that bright embodiment provides, comprising:
S101: starting dish-washing machine bleeding stage.
In the present embodiment, mainly in dish-washing machine bleeding stage, the detection to draining failure is completed.Wherein, start dish-washing machine
The realization principle of bleeding stage is same as the prior art, and the present embodiment is herein without repeating.
Wherein, the executing subject of the embodiment of the present invention and following embodiments is dish-washing machine, specifically can be dish-washing machine
Main control unit, such as single-chip microcontroller (Microcontroller Unit, abbreviation MCU).
S102: obtain dish-washing machine bleeding stage in or bleeding stage after pressure switch state.
In the present embodiment, by detecting the open or closed state of pressure switch, to judge whether bleeding stage has exception.
Wherein, pressure switch can be connected with circulating pump or draining pump, can be according to the location of pressure switch, in the difference of draining
Stage realizes the detection to pressure switch, can specifically include following two kinds of implementations:
The first implementation: pressure switch is located in the circulation branch road of circulating pump, after bleeding stage, start circulating pump with
Detect the state of pressure switch.
Second of implementation: pressure switch is located at the draining branch road of draining pump, detects pressure in bleeding stage and opens
The state of pass.
Wherein, when hydraulic pressure is greater than or equal to A kpa, pressure switch is opened；When hydraulic pressure is less than A kpa, pressure switch closure.
Akpa is the minimum hydraulic pressure for opening pressure switch.
S103: judge whether the draining of dish-washing machine is abnormal according to the state of pressure switch.
In the present embodiment, in bleeding stage or after bleeding stage, if pressure switch is in the open state or opening state
Duration is greater than preset value, then drains exception.Specifically, without ponding in dish-washing machine cavity, no hydraulic pressure causes if draining is normal
Pressure switch is opened, and pressure switch is in closed state, and judgement draining at this time is normal.If draining pump is faulty to lead to cavity volume
The hydraulic pressure that water, circulating pump or draining pump generate will lead to pressure switch opening, to judge to drain failure of pump.
Draining fault detection method provided in an embodiment of the present invention, in drainage procedure, by bleeding stage or arranging
After the water stage, by detecting the state of pressure switch, to judge whether draining is abnormal.Draining failure of pump can be detected in time and is reported
It is alert, remind user's on-call maintenance.
Pressure switch of the embodiment of the present invention is located in the circulation branch road of circulating pump, after bleeding stage, starting circulation
It pumps to detect the state of pressure switch.Fig. 2 is the flow diagram of draining fault detection method provided by Embodiment 2 of the present invention,
As shown in Fig. 2, draining fault detection method provided in an embodiment of the present invention, may include:
S201: start to drain.
S202: control draining pump work x seconds.
S203: control loop pump work y seconds.
In the present embodiment, after S202 has been executed, S203 is just executed.
In the present embodiment, the state of pressure switch after dish-washing machine bleeding stage is obtained, may include: in draining pump work x
After second, control loop pump work y seconds, the state of pressure switch when obtaining circulation pump work.
Wherein, x > 0, y > 0, x are the shortest time that water in cavity is discharged in draining pump, and y is that circulating pump recirculated water generates hydraulic pressure
Shortest time.
Specifically, bleeding stage, draining pump first works x seconds, and then circulating pump works y seconds again.After draining pump drainage, if chamber
There is ponding in vivo, it is in the open state to will lead to pressure switch for hydraulic pressure when recycling pump work, thus judge that draining is abnormal, draining pump
Failure.If draining is normal, without ponding in dish-washing machine cavity, without water in circulating pump, because leading to pressure switch without hydraulic pressure
It opens, pressure switch is in closed state, to judge that draining is normal.
Wherein, the practical water discharge time of draining pump can be greater than x seconds in practical application, and the circulating pump reality of work working time can
To be greater than y seconds.
S204: judge whether pressure switch is closed.If so, draining is normal, terminate；If it is not, then drain exception, alarm or
Acousto-optic hint user maintenance.
In the present embodiment, judge whether the draining of dish-washing machine is abnormal, may include: in pressure according to the state of pressure switch
When switch is not in closed state, judge that the draining of dish-washing machine is abnormal.
Specifically, pressure switch is opened when recycling pump work after bleeding stage, MCU receives pressure switch and opens letter
Number, judge that draining is abnormal, alarm or acousto-optic hint user maintenance.
In the present embodiment, after judgement drains abnormal alarm, draining pump is closed, closes circulating pump and intake pump, it is anti-to stop loss
Bad machine and spilling water, while sound-light alarm prompt user's maintenance.
Draining fault detection method provided in an embodiment of the present invention, pressure switch are located in the circulation branch road of circulating pump,
After bleeding stage, the open or closed state of pressure switch is detected by starting circulating pump, to judge whether draining is abnormal.
Further, in the embodiment depicted in figure 2, after pressure switch is not in closed state, judge dish-washing machine
Before draining exception, draining fault detection method provided in an embodiment of the present invention can also include: control draining pump work x seconds,
Circulation pump work y seconds, after recycling n times, the state of pressure switch when obtaining circulation pump work again；Wherein, n is whole greater than 1
Number；x> y.
Specifically, Fig. 3 is the flow diagram for the draining fault detection method that the embodiment of the present invention three provides, such as Fig. 3 institute
Show, draining fault detection method provided in an embodiment of the present invention may include:
S301: start to drain.
S302: control draining pump work x seconds.
S303: control loop pump work y seconds.
S304: judge whether pressure switch is closed.If so, draining is normal, terminate；If it is not, then executing S305.
In the present embodiment, S301~S304 is identical as the implementation method of S201~S204 in above-described embodiment, the present embodiment
Herein without repeating.
S305: detection recycles and drains the n whether number of occurrence is greater than setting.If so, draining is abnormal, alarm or acousto-optic
Prompt user's maintenance；If it is not, then executing S302.
In the present embodiment, after MCU receives pressure switch opening signal, then draining pump work x seconds is allowed, then circulating pump is again
Work y seconds judges that draining is abnormal, issues alarm if pressure switch is still opened.
Wherein, dish-washing machine can allow according to actual needs drains pump work x seconds, recycles pump work y seconds, this judgment step
(i.e. S302~S304) n times repeatedly, to determine the accuracy of pressure switch opening signal.
In the present embodiment, after draining abnormal alarm, draining pump is closed, closes circulating pump and intake pump, prevents damage machine
And spilling water, while sound-light alarm prompt user's maintenance.
Draining fault detection method provided in an embodiment of the present invention, pressure switch are located in the circulation branch road of circulating pump,
After bleeding stage, the open or closed state of pressure switch is detected by starting circulating pump, is in open shape in pressure switch
When state, after allowing draining pump work x seconds, pump work y seconds this judgment step of circulation after n times, detects pressure switch repeatedly again
Open or closed state, to judge whether draining is abnormal.
Pressure switch of the embodiment of the present invention is located at the draining branch road of draining pump, and pressure switch is detected in bleeding stage
State.Fig. 4 is the flow diagram for the draining fault detection method that the embodiment of the present invention four provides, as shown in figure 4, the present invention is real
The draining fault detection method that example provides is applied, may include:
S401: start to drain.
S402: control draining pump work x seconds.
S403: draining pump task again is controlled.
In the present embodiment, after S402 has been executed, S403 is just executed.
In the present embodiment, the state of pressure switch in dish-washing machine bleeding stage is obtained, may include: in draining pump first row
After water stage work x seconds, the state of pressure switch when draining pump second drains stage work is obtained；Wherein, x > 0, x are draining
The shortest time of water in pump discharge cavity.
Specifically, pressure switch is connected to the draining branch road of draining pump, drainage procedure can carry out stage by stage.First rank
Section draining pump work x seconds guarantees that water energy drains (without ponding in dish-washing machine cavity) under normal circumstances；Second stage draining pump is again
Task checks that the state of pressure switch illustrates first if pressure switch is opening state in the second stage course of work
Stage water is not discharged and (has ponding in dish-washing machine cavity), and draining is abnormal.
S404: judge whether pressure switch is closed.
In the present embodiment, judge whether the draining of dish-washing machine is abnormal according to the state of pressure switch, comprising: in pressure switch
When being not in closed state, judge that the draining of dish-washing machine is abnormal.
Specifically, in bleeding stage, when draining pump second stage drainage works, pressure switch is opened, and MCU receives pressure
Opening signal is switched, judges that draining is abnormal, alarm or acousto-optic hint user maintenance.
In the present embodiment, after judgement drains abnormal alarm, draining pump is closed, closes circulating pump and intake pump, it is anti-to stop loss
Bad machine and spilling water, while sound-light alarm prompt user's maintenance.
Draining fault detection method provided in an embodiment of the present invention, pressure switch are located at the draining branch road of draining pump, row
Water process can carry out stage by stage, detect the open or closed state of pressure switch, in draining second stage to judge to drain
It is whether abnormal.
Further, in the embodiment shown in fig. 4, after pressure switch is not in closed state, judge dish-washing machine
Before draining exception, draining fault detection method provided in an embodiment of the present invention can also include: since the second bleeding stage
Timing, detection pressure switch duration z in the open state；When duration z is greater than or equal to preset duration a, dish-washing machine is judged
Draining it is abnormal.
Specifically, Fig. 5 is the flow diagram for the draining fault detection method that the embodiment of the present invention five provides, such as Fig. 5 institute
Show, draining fault detection method provided in an embodiment of the present invention may include:
S501: start to drain.
S502: control draining pump work x seconds.
S503: draining pump task again is controlled.
S504: judge whether pressure switch is closed.If so, draining is normal, terminate；If it is not, then executing S505.
In the present embodiment, S501~S304 is identical as the implementation method of S401~S404 in above-described embodiment, the present embodiment
Herein without repeating.
S505: whether detection pressure switch duration z in the open state is greater than or equal to preset duration a.If so, row
Water is abnormal, alarm or acousto-optic hint user maintenance；If it is not, then executing S502.
In the present embodiment, after MCU receives pressure switch opening signal, detection pressure switch duration in the open state
Z judges that draining is abnormal, issues alarm if pressure switch duration z in the open state is greater than or equal to preset duration a.Its
In, z < x.
The present embodiment duration z in the open state by detection pressure switch, to determine pressure switch opening signal
Accuracy.
In the present embodiment, after draining abnormal alarm, draining pump is closed, closes circulating pump and intake pump, prevents damage machine
And spilling water, while sound-light alarm prompt user's maintenance.
Draining fault detection method provided in an embodiment of the present invention, pressure switch are located at the draining branch road of draining pump, row
Water process can carry out stage by stage, and whether detection pressure switch duration z in the open state is greater than in draining second stage
Or it is equal to preset duration a, to judge whether draining is abnormal.In the present embodiment, at setting the second bleeding stage detection pressure switch
Be in the meaning of the duration z of opening state, for the first bleeding stage of draining pump carry out time bias, such as pipeline blockage,
When draining pump power reduction, after draining pump first drains stage work x seconds, what the washing water in cavity was not completely exhausted out
In the case of, by being compensated in the preset duration a of the second draining phase sets, when the duration z, which is greater than or equal to, to be preset
When long a, it is believed that the washing water in compensation time rear chamber is not completely exhausted out yet, and then judges that the draining of the dish-washing machine is different
Often.The present embodiment is in the second draining phase sets preset duration a, it is possible to reduce the abnormal erroneous judgement of the draining of dish-washing machine mentions
The accuracy of high dish-washing machine judgement.
Pressure switch of the embodiment of the present invention is located at the draining branch road of draining pump, and pressure switch is detected in bleeding stage
State.Fig. 6 is the flow diagram for the draining fault detection method that the embodiment of the present invention six provides, as shown in fig. 6, the present invention is real
The draining fault detection method that example provides is applied, may include:
S601: start to drain.
S602: the timing since draining pump work, detection pressure switch duration m in the open state.
In the present embodiment, the state of pressure switch in dish-washing machine bleeding stage is obtained, may include: to be opened from draining pump work
Beginning timing, detection pressure switch duration m in the open state.
Specifically, when draining pump just starts drainage works, the intracorporal ponding of dish-washing machine chamber starts to be discharged, at this point, if pressure
Power switch is opened, and draining is in normal condition.
S603: judge whether m is greater than or equal to preset duration b.If so, draining is abnormal, alarm or acousto-optic hint user
Maintenance；If it is not, draining is normal.
In the present embodiment, in order to reduce erroneous judgement, spy sets preset duration b, is washed according to the judgement of the state of pressure switch
Whether the draining of bowl machine is abnormal, comprising: when duration m is greater than or equal to preset duration b, judges that the draining of dish-washing machine is abnormal；When
It drains pump work preset time (the x second in such as above-described embodiment), guarantees that the intracorporal ponding of dish-washing machine chamber can be arranged under normal circumstances
In the case where to the greatest extent, if pressure switch is still opened at this time, illustrate that water is not discharged when draining pump work, and is beaten in pressure switch
When opening duration m >=b, then determine that draining is abnormal；Wherein, b >=x, x are the shortest time that water in cavity is discharged in draining pump.
In the present embodiment, after MCU receives pressure switch opening signal, detection pressure switch duration in the open state
M judges that draining is abnormal, issues alarm if pressure switch duration m in the open state is greater than or equal to preset duration b.
In the present embodiment, after draining abnormal alarm, draining pump is closed, closes circulating pump and intake pump, prevents damage machine
And spilling water, while sound-light alarm prompt user's maintenance.
Draining fault detection method provided in an embodiment of the present invention, pressure switch are located at the draining branch road of draining pump, from
Draining pump work starts timing, detection pressure switch duration m in the open state, to judge whether draining is abnormal.
The embodiment of the present invention also provides a kind of dish-washing machine, comprising:
Cavity, for accommodating washing water；
Circulation branch road and the circulating pump for being installed on circulation branch road, the circulation branch road are connected to the cavity；
Draining branch and the draining pump for being installed on draining branch, the draining branch are connected to the cavity；
Pressure switch, for detecting circulation branch road and/or draining the hydraulic pressure in branch；
Module is obtained, for obtaining the state of pressure switch in dish-washing machine bleeding stage；
Whether judgment module, the draining for judging the dish-washing machine according to the state of the pressure switch are abnormal.
Wherein, obtaining module and judgment module can be set in the MCU of dish-washing machine.
Further, in the above-described embodiments, the pressure switch is located in the circulation branch road of circulating pump, the draining rank
After section, start circulating pump to detect the state of the pressure switch.
Specifically, Fig. 7 is that the structure that pressure switch provided in an embodiment of the present invention is located in the circulation branch road of circulating pump is shown
It is intended to, as shown in fig. 7, pressure switch one end is connected to power positive end, one end is connected to ground.When pressure switch closure, MCU
I/O port is low level；When pressure switch is opened, MCU I/O port is high level.According to the low and high level of pressure switch, can control
The on-off of circulating pump bleeding stage processed.L indicates that firewire, N indicate zero curve in Fig. 7.
Further, in the above-described embodiments, the pressure switch is located at the draining branch road of draining pump, in bleeding stage
The state of the middle detection pressure switch.
In the present embodiment, pressure switch is located at the structural schematic diagram and realization principle and pressure of the draining branch road of draining pump
The structural schematic diagram that switch is located in the circulation branch road of circulating pump is similar with realization principle, and the present embodiment is herein without repeating.
Further, in the above-described embodiments, the dish-washing machine further include:
Detection module, for detecting pressure switch duration in the open state；
The judgment module is also used to judge that the draining of the dish-washing machine is different when the duration is greater than or equal to preset duration
Often.
Wherein, detection module and judgment module also can be set in the MCU of dish-washing machine.
It will appreciated by the skilled person that whole or certain steps, system, dress in method disclosed hereinabove
Functional module/unit in setting may be implemented as software, firmware, hardware and its combination appropriate.In hardware embodiment,
Division between the functional module/unit referred in the above description not necessarily corresponds to the division of physical assemblies；For example, one
Physical assemblies can have multiple functions or a function or step and can be executed by several physical assemblies cooperations.Certain groups
Part or all components may be implemented as by processor, such as the software that digital signal processor or microprocessor execute, or by
It is embodied as hardware, or is implemented as integrated circuit, such as specific integrated circuit.Such software can be distributed in computer-readable
On medium, computer-readable medium may include computer storage medium (or non-transitory medium) and communication media (or temporarily
Property medium).As known to a person of ordinary skill in the art, term computer storage medium is included in for storing information (such as
Computer readable instructions, data structure, program module or other data) any method or technique in the volatibility implemented and non-
Volatibility, removable and nonremovable medium.Computer storage medium include but is not limited to RAM, ROM, EEPROM, flash memory or
Other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storages, magnetic holder, tape, disk storage or its
His magnetic memory apparatus or any other medium that can be used for storing desired information and can be accessed by a computer.
In addition, known to a person of ordinary skill in the art be, communication media generally comprises computer readable instructions, data structure, program
Other data in the modulated data signal of module or such as carrier wave or other transmission mechanisms etc, and may include any letter
Cease delivery media.
Claims (10)
1. a kind of draining fault detection method of dish-washing machine, comprising:
Start dish-washing machine bleeding stage；
Obtain dish-washing machine bleeding stage in or bleeding stage after pressure switch state；
Judge whether the draining of the dish-washing machine is abnormal according to the state of the pressure switch.
2. the method according to claim 1, wherein the pressure switch is located in the circulation branch road of circulating pump,
The state of pressure switch after the acquisition dish-washing machine bleeding stage, comprising:
After draining pump work x seconds, control loop pump work y seconds, the state of pressure switch when obtaining circulation pump work；
Wherein, x > 0, y > 0, x are the shortest time that water in cavity is discharged in draining pump, and y is that circulating pump recirculated water generates hydraulic pressure most
Short time；
The state according to pressure switch judges whether the draining of the dish-washing machine is abnormal, comprising:
When the pressure switch is not in closed state, judge that the draining of the dish-washing machine is abnormal.
3. according to the method described in claim 2, it is characterized in that, sentencing after the pressure switch is not in closed state
Before the draining exception of the dish-washing machine of breaking, the method also includes:
Control draining pump work x seconds, recycles pump work y seconds, after recycling n times, pressure switch when obtaining circulation pump work again
State；
Wherein, n is the integer greater than 1；x> y.
4. the method according to claim 1, wherein the pressure switch is located at the draining branch road of draining pump,
The state for obtaining pressure switch in dish-washing machine bleeding stage, comprising:
After draining pump first drains stage work x seconds, the state of pressure switch when draining pump second drains stage work is obtained；
Wherein, x > 0, x are the shortest time that water in cavity is discharged in draining pump；
The state according to pressure switch judges whether the draining of the dish-washing machine is abnormal, comprising:
When the pressure switch is not in closed state, judge that the draining of the dish-washing machine is abnormal.
5. according to the method described in claim 4, it is characterized in that, sentencing after the pressure switch is not in closed state
Before the draining exception of the dish-washing machine of breaking, the method also includes:
The timing since second bleeding stage detects pressure switch duration z in the open state；
When the duration z is greater than or equal to preset duration a, judge that the draining of the dish-washing machine is abnormal.
6. the method according to claim 1, wherein the pressure switch is located at the draining branch road of draining pump,
The state for obtaining pressure switch in dish-washing machine bleeding stage, comprising:
The timing since the draining pump work detects pressure switch duration m in the open state；
The state according to pressure switch judges whether the draining of the dish-washing machine is abnormal, comprising:
When the duration m is greater than or equal to preset duration b, judge that the draining of the dish-washing machine is abnormal.
7. a kind of dish-washing machine characterized by comprising
Cavity, for accommodating washing water；
Circulation branch road and the circulating pump for being installed on circulation branch road, the circulation branch road are connected to the cavity；
Draining branch and the draining pump for being installed on draining branch, the draining branch are connected to the cavity；
Pressure switch, for detecting circulation branch road and/or draining the hydraulic pressure in branch；
Module is obtained, for obtaining the state of pressure switch in dish-washing machine bleeding stage；
Whether judgment module, the draining for judging the dish-washing machine according to the state of the pressure switch are abnormal.
8. dish-washing machine according to claim 7, which is characterized in that the pressure switch is located at the circulation branch road of circulating pump
On, after the bleeding stage, start circulating pump to detect the state of the pressure switch.
9. dish-washing machine according to claim 7, which is characterized in that the pressure switch is located at the draining branch of draining pump
On, the state of the pressure switch is detected in bleeding stage.
10. according to the described in any item dish-washing machines of claim 7-9, which is characterized in that the dish-washing machine further include:
Detection module, for detecting pressure switch duration in the open state；
The judgment module is also used to judge that the draining of the dish-washing machine is different when the duration is greater than or equal to preset duration
Often.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811531777.5A CN109497902B (en) | 2018-12-14 | 2018-12-14 | Dish washing machine and drainage fault detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811531777.5A CN109497902B (en) | 2018-12-14 | 2018-12-14 | Dish washing machine and drainage fault detection method thereof |
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| Publication Number | Publication Date |
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| CN109497902A true CN109497902A (en) | 2019-03-22 |
| CN109497902B CN109497902B (en) | 2021-07-06 |
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| CN201811531777.5A Active CN109497902B (en) | 2018-12-14 | 2018-12-14 | Dish washing machine and drainage fault detection method thereof |
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| CN112043218A (en) * | 2019-05-20 | 2020-12-08 | 青岛海尔股份有限公司 | Drainage control method of washing equipment and washing equipment |
| CN113180572A (en) * | 2021-03-16 | 2021-07-30 | 青岛海尔洗碗机有限公司 | Control method of dish-washing machine and dish-washing machine |
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