CN110604527A - Water inlet control method of dish washing machine and dish washing machine - Google Patents
Water inlet control method of dish washing machine and dish washing machine Download PDFInfo
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- CN110604527A CN110604527A CN201810621763.6A CN201810621763A CN110604527A CN 110604527 A CN110604527 A CN 110604527A CN 201810621763 A CN201810621763 A CN 201810621763A CN 110604527 A CN110604527 A CN 110604527A
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- water
- water inlet
- water level
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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
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
- A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
- A47L15/0023—Water filling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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- Washing And Drying Of Tableware (AREA)
Abstract
The invention discloses a water inlet control method of a dish washing machine and the dish washing machine. The dishwasher of the invention can meet the control of water inlet time under various water pressure conditions, and can find the fault of the water inlet device of the dishwasher as soon as possible, thereby greatly reducing unnecessary water inlet waiting time, effectively utilizing the working time of the dishwasher and enabling the work of the dishwasher to be more efficient.
Description
Technical Field
The invention belongs to the field of dish-washing machine equipment, and particularly relates to a dish-washing machine and a water inlet control method thereof.
Background
In the field of dishwasher technology, water level switches or flow meters are commonly used to control the intake of water into the dishwasher tank. The working principle of controlling the water inlet of the dish washing machine by the water level switch is mainly that the water level is detected by an electronic probe and then the water inlet is controlled by matching with a peripheral control circuit. The electronic probe of the water level switch is usually arranged at the water level control position of the water tank, namely when the water level reaches the position, the water level switch acts, and the peripheral control circuit controls the dish washing machine to stop water inflow.
The principle of controlling water inflow by using a flow meter is that the dish-washing machine enters water through a water inlet valve, and the flow meter is used for measuring the water inflow. In this embodiment, the flow meter may include a rotating body, a fixed magnet, a flow rate detecting unit for detecting the number of rotations, and an electronic switch for detecting the amount of opening and closing of the magnet that is repeated when the rotating body rotates. The electronic switch takes the signal output by the flowmeter as an input signal, and the water inlet valve is controlled to stop water inlet when the counting reaches the set switching value, namely the water inlet valve is controlled to stop water inlet when the counting reaches the set counting value.
However, no matter which water inlet mode is used for controlling the water inlet of the dishwasher, the working principle of the dishwasher is to control the water inlet process according to the current water inlet amount of the dishwasher. That is, the dishwasher will continue to be supplied with water as long as the amount of water in the dishwasher does not reach the prescribed water intake amount. Such a control method has a great disadvantage: firstly, if the water pressure of the inlet water is very small, the requirement that the whole inlet water washing process is finished within the time range which can be endured by a user may not be met at all, under the action of the existing inlet water control mode, the dishwasher can only feed water continuously until the water quantity meets the requirement because the inlet water quantity does not reach the specified water level in time, and the possibly long inlet water time is not desired by the user; on the other hand, when the water inlet device breaks down, the existing control mode cannot find the problem in time, so that the user experience is influenced, and even danger is caused.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a water inlet control method of a dish-washing machine and the dish-washing machine, which can meet the control of water inlet time under various water pressure conditions and can find the fault of a water inlet device of the dish-washing machine as early as possible, thereby greatly reducing unnecessary water inlet waiting time, effectively utilizing the working time of the dish-washing machine and enabling the work of the dish-washing machine to be more efficient.
In order to realize the purpose, the invention adopts the following technical scheme:
a water inlet control method of a dish washing machine comprises a plurality of water inlet periods which are sequentially executed in a water inlet stage until the water inlet stage is finished or the water inlet stage is suspended.
Further, the number of the plurality of water inlet periods is N, wherein N is more than 1; if the current water level does not reach the preset water level after the last water inlet period is executed in the water inlet stage of the dish-washing machine, alarming;
preferably, the alarm comprises an audible/visual alarm to indicate water shortage;
preferably, if the dishwasher water inlet stage is executed after the last water inlet period, the current water level still does not reach the preset water level; the dishwasher stops the water intake and the water intake phase ends.
Further, the water inlet stage is suspended after each water inlet period is finished, and whether the current water level reaches the preset water level is judged: if the current water level does not reach the preset water level, controlling the inflow water to enter the next water inflow period and continuously inflow water into the dish washing machine; otherwise, stopping water inflow, and ending the water inflow stage.
Further, judging whether the current water level reaches a preset water level in real time in each water inlet period; and if the current water level reaches the preset water level, stopping water inflow, and ending the water inflow stage.
Furthermore, the time lengths of at least two water inlet periods in the N water inlet periods are different;
preferably, the time length of the first water inlet period in the water inlet stage is longest;
further preferably, the number of the water inlet periods is 2, and the time length of the first water inlet period is longer than that of the second water inlet period.
Furthermore, the time duration of the N water inlet periods is the same.
A dishwasher, comprising: a control device; the control device controls a plurality of water inlet periods which are sequentially executed in the water inlet stage of the dish washing machine until the water inlet stage is finished or the water inlet stage is suspended.
Further, the control device of the dishwasher includes:
the water level judging device is used for judging whether the current water level in the dish washing machine reaches a preset water level or not;
the clock unit is used for sequentially setting a plurality of water inlet periods in the water inlet stage;
the controller is in circuit connection with the water level judgment device and the clock unit, and controls the water level judgment device to judge whether the current water inflow reaches a preset water level after each water inflow period is finished until the water inflow stage is finished or is suspended;
preferably, the water level judging device comprises a water level detecting device and a judging device, wherein the water level detecting device and the judging device are electrically connected with each other and are used for detecting the current water level in the dishwasher and judging whether the current water level reaches a preset water level; the water level detection device is arranged in the dishwasher and sends current water level information to the judgment device, and the judgment device judges whether the current water level reaches a preset water level according to the water level information;
preferably, the water level judging device is arranged in the dishwasher and is provided with a signal transmitting circuit for transmitting water level information to the controller; the signal transmitting circuit is a normally open circuit, is switched on and closed only when the water level in the dish washer reaches a preset water level, and transmits a water level information signal to the controller;
further preferably, the signal transmitting circuit comprises a normally open switch, and when the normally open switch is closed, the signal transmitting circuit is switched on and closed and transmits the water level information signal to the controller; the water level judging device is also provided with a float switch which is connected with the normally open switch and is used for controlling the normally open switch, the float switch comprises a float, the float moves up and down along with the rise and fall of the liquid level in the dishwasher, and when the float reaches a preset water level, the normally open switch is controlled to be closed, and the signal sending circuit is switched on;
further preferably, the dishwasher comprises an inner container for accommodating tableware, the float switch is arranged at the bottom of the inner container, and the float switch is electrically connected with the controller through a signal line.
The dishwasher further comprises a water inlet switch which is connected with the controller through a circuit and is used for controlling the water inlet waterway of the dishwasher to be switched on/off, the controller controls the water inlet switch to be switched on/off, and the controller controls the water inlet switch to be switched off after receiving the information that the water level judging device judges that the current water level reaches the preset water level;
preferably, the water inlet period set by the clock unit comprises N water inlet periods, wherein N is greater than 1; and if the current water level does not reach the preset water level after the last water inlet period is executed in the water inlet stage of the dish washing machine, the controller controls the water inlet switch to close the water inlet waterway, and the water inlet stage is finished.
Furthermore, the control device also comprises an alarm prompting device which is connected with the controller circuit, the water inlet period set by the clock unit comprises N water inlet periods, and N is more than 1; if the current water level still does not reach the preset water level after the last water inlet period is executed in the water inlet stage of the dish-washing machine, the controller indicates the alarm prompting device to send an alarm signal;
further preferably, the alarm signal includes an audible/visual alarm to indicate water shortage.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the dish washing machine water inlet control method and the dish washing machine set a plurality of water inlet periods for the water inlet stage, so that the dish washing machine can evaluate the current water inlet condition after each water inlet period is finished, the dish washing machine can find the current water inlet problem in time conveniently, the water inlet process can be controlled conveniently, and the defect that the water inlet control is carried out through the water inlet amount in the past is overcome.
According to the invention, the current water inlet level is judged by the water level judgment device of the dish washing machine after each water inlet period is finished, and if the current water level still cannot reach the preset water level and cannot meet the washing requirement of the dish washing machine after all the water inlet periods are finished, the dish washing machine notifies a user in time in an alarm mode or stops water inlet in a crisp way, so that long-time waiting of the user is avoided.
In the setting of the water inlet period, the invention adopts two different period setting modes: one is to adopt a period setting mode with at least two water inlet periods with different time lengths; one is to adopt a period setting mode that the time of a water inlet period is the same. These two solutions each have their own advantages: the first scheme is relatively in line with the water inlet rule of the dish-washing machine, the set number of water inlet periods can be reduced by properly adjusting the length of the first water inlet period, and a relatively good balance is obtained between the reduction of detection and judgment times and the timely discovery of water inlet problems; in the other scheme, the time set periodically is the same, so that the method is easier to realize for a time control system, the control process is simpler, and the requirement on a clock unit is lower, so that the implementation cost is lower.
The invention adopts the float switch mode to judge the water inflow by the water level in the inner container of the dish-washing machine, not only has high precision, but also controls the normal open switch of the signal sending circuit to be closed by the float switch so as to send the water level information signal, has high reliability and accurate result, and generally the float switch is controlled by weak current, the working current is in mA level, so that the control device of the whole dish-washing machine is safer and more reliable.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a flow chart of a method for controlling water inflow of a dishwasher according to the present invention;
FIG. 2 is a schematic view of the control device of the dishwasher of the present invention;
fig. 3 is a schematic structural view of a float switch of a dishwasher according to the present invention.
In the figure: 1. a wire; 2. a float base; 3. a float.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
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 will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 3, the present invention discloses a water inlet control method of a dishwasher and the dishwasher, wherein the water inlet stage comprises a plurality of water inlet cycles which are executed in sequence until the water inlet stage is finished or the water inlet stage is suspended. The dishwasher of the invention can meet the control of water inlet time under various water pressure conditions, and can find the fault of the water inlet device of the dishwasher as soon as possible, thereby greatly reducing unnecessary water inlet waiting time, effectively utilizing the working time of the dishwasher and enabling the work of the dishwasher to be more efficient.
Example 1
The embodiment provides a water inlet control method of a dishwasher, which comprises a plurality of water inlet periods which are sequentially executed in a water inlet stage until the water inlet stage is finished or the water inlet stage is suspended. In this embodiment, as shown in fig. 1, after each water inlet cycle is finished, the water inlet stage is suspended, and whether the current water level reaches the preset water level is determined: if the current water level does not reach the preset water level, controlling the inflow water to enter the next water inflow period and continuously inflow water into the dish washing machine; otherwise, stopping water inflow, and ending the water inflow stage. The invention actively sets a plurality of water inlet periods, actively evaluates the current water inlet condition after each water inlet period is finished, and controls the subsequent operation according to the evaluation result. The defect that the early intervention on the whole running time of the dish washing machine cannot be carried out due to the fact that water inlet control is carried out only by the difference between the water inlet amount and the target water inlet amount at present is overcome. The user can find the water inlet fault of the dish washer as early as possible and make corresponding adjustment as early as possible according to the current situation of the current water inlet system.
In the embodiment, if the current water level does not reach the preset water level after the last water inlet period is executed in the water inlet stage of the dish-washing machine, an alarm is given; preferably, the alarm comprises an audible/visual alarm to indicate water shortage. The purpose of such setting of this embodiment is to set the longest water intake time for the water intake process of the dishwasher, after all water intake cycles are completed, compare the current water intake with the preset water level, if the water intake requirement can not be met yet, indicate that the current water intake system has a problem, and prompt the problem to the user in an alarm manner, provide a chance of active judgment and adjustment for the user, instead of keeping the water intake state as in the existing dishwasher, and neglecting the subjective feeling of the user.
In this embodiment, if the dishwasher has executed the last water intake cycle in the water intake stage, the current water level still does not reach the preset water level; besides the alarm action, the dishwasher can stop water feeding, and the water feeding stage is controlled to be finished so as to wait for the indication of a user and avoid equipment damage caused by long-time opening of a water feeding system.
As shown in fig. 1, the number of the plurality of water inlet periods is N, where N > 1. In the embodiment, the time lengths of at least two water inlet periods in the N water inlet periods are different; preferably, the length of time of the first water intake cycle in the water intake phase is the longest. The longest time for setting the first water intake period is the setting made according to the water intake law of the dishwasher. The number of the water inlet periods can be reduced by properly adjusting the length of the first water inlet period, and a better balance is obtained between the reduction of the detection judgment times and the timely discovery of the water inlet problem. Further preferably, the number of the water inlet periods is 2, and the time length of the first water inlet period is longer than that of the second water inlet period.
In this embodiment, the time length setting of the first water inlet period can adopt various schemes, and the setting is as much as possible, so that the dish washing machine reaches the preset water amount under the normal water pressure condition, and the required water inlet time when the dish washing requirement of the dish washing machine is met. The time length can be set in various ways, can be set in the system in advance, and can also be set by the user.
In some embodiments, the first intake cycle duration is a time required for the intake water amount to reach a preset intake water amount under an actual intake water pressure condition at the time of the initial operation of the dishwasher. Setting the water inlet time as a first water inlet period, and setting the total water inlet time and the number of water inlet periods included in the total water inlet time according to user or system preset. And executing water inlet control of a plurality of water inlet periods including the first water inlet period in the future water inlet process.
The dishwasher in the embodiment evaluates the current water inlet condition after finishing the water inlet of one water inlet period, so that the dishwasher can find the current water inlet problem in time conveniently, the water inlet process can be controlled conveniently, and the defect that the water inlet control is performed through the water inlet amount in the past is overcome.
In every cycle of intaking in this embodiment, can also monitor whether current water level reaches and predetermines the water level in real time, can in time close the switch of intaking when the water level reaches and predetermines the water level, end the process of intaking.
Example 2
The embodiment is a supplement to embodiment 1, and the difference between the embodiment and embodiment 1 is that the number of a plurality of water inlet periods of the dishwasher is N, and N > 1; the time of N water inlet periods is the same. The control mode of the equal-length water inlet period adopted by the embodiment is easier to realize for a time control system, the control process is simpler, and the requirement on a clock unit is lower, so that the implementation cost is lower
Example 3
As shown in fig. 2 and 3, the present embodiment discloses a dishwasher. The dishwasher includes: a control device; the control device performs the water inlet control method described in the above embodiment, controls the dish washer to sequentially execute a plurality of water inlet cycles in the water inlet stage until the water inlet stage is finished or the water inlet stage is suspended, and completes the water inlet process control in the above embodiment.
As shown in fig. 2, the control device of the dishwasher in the present embodiment includes:
the water level judging device is used for judging whether the current water level in the dish washing machine reaches a preset water level or not;
the clock unit is used for sequentially setting a plurality of water inlet periods in the water inlet stage; the water inlet period comprises N water inlet periods, wherein N is more than 1; the clock unit may enable a time timer to be provided within the system.
And the controller is in circuit connection with the water level judgment device and the clock unit, and controls the water level judgment device to judge whether the current water inflow reaches the preset water level after each water inflow period is finished until the water inflow stage is finished or the water inflow stage is suspended. The controller may be an integrated circuit with logic judgment capability or a control chip.
The dishwasher also comprises a water inlet switch which is connected with the controller circuit and is used for controlling the water inlet waterway of the dishwasher to be switched on/off, the controller controls the water inlet switch to be switched on/off, and the controller controls the water inlet switch to switch off the water inlet waterway after receiving the information that the water level judging device judges that the current water level reaches the preset water level;
in this embodiment, if the current water level does not reach the preset water level after the last water inlet cycle of the dishwasher is executed, the controller controls the water inlet switch to close the water inlet waterway, and the water inlet stage is ended.
In other implementations, the control device of the dishwasher further comprises an alarm prompting device which is not shown in the figure and is connected with the controller circuit, the water inlet period set by the clock unit comprises N water inlet periods, and N is more than 1; if the current water level does not reach the preset water level after the last water inlet period is executed in the water inlet stage of the dish-washing machine, the controller indicates the alarm prompting device to send out an alarm signal. The alarm signal comprises a sound/light alarm mode for prompting water shortage.
As shown in fig. 2, the water level judging means in this embodiment includes a water level detecting means for detecting a current water level in the dishwasher and a judging means for judging whether the current water level reaches a preset water level, which are electrically connected to each other. The water level detection device is arranged in the dishwasher and sends current water level information to the judgment device, and the judgment device judges whether the current water level reaches the preset water level according to the water level information.
Preferably, the water level judging device is arranged in the dishwasher and is provided with a signal transmitting circuit for transmitting water level information to the controller; the signal transmitting circuit is a normally open circuit, is switched on and closed only when the water level in the dish washer reaches a preset water level, and transmits a water level information signal to the controller;
in order to fulfill the purpose of sending the water level information signal by the phase controller of the water level judging device, the signal sending circuit in this embodiment includes a normally open switch, and when the normally open switch is closed, the signal sending circuit is closed and is switched on, and sends the water level information signal to the controller.
As shown in fig. 3, the water level determining device in this embodiment has a float switch connected to the normally open switch for controlling the normally open switch, the float switch includes a float 3, the float 3 moves up and down along with the rise and fall of the liquid level in the dishwasher, and when the float 3 reaches a predetermined water level, the normally open switch is controlled to be closed, and the signal transmitting circuit is connected. The dishwasher comprises an inner container for accommodating tableware, the float switch is arranged at the bottom of the inner container, and the float switch is electrically connected with the controller through a lead 1.
Specifically, the float switch of the embodiment is arranged at the bottom of the inner container of the dish washer, and the float switch is used for detecting the water level of the inlet water in the inner container and judging whether the water amount of the inlet water meets the set requirement. The float switch is composed of a float 3, a lead 1, a float base 2 and the like. The working principle is that the float switch is arranged in the inner container of the dish washing machine, the float 3 contains a magnet, the water level of the inlet water rises, and the float 3 rises along with the water level. The floater 3 is equivalent to a water level detection device, when the floater 3 ascends to a set position, the magnet in the floater 3 generates a magnetic field, so that the magnetic reed switch in the floater base 2 is closed and conducted, one end of the lead 1 is connected with the magnetic reed switch, and the other end of the lead is connected to the controller through a wiring terminal. After the water level is conducted, a signal is sent to the controller to indicate that the water level of the inlet water reaches the set requirement, and the next action can be carried out. Whether or not the float 3 can control the conduction of the reed switch in this embodiment corresponds to a determination means in the water level determination means. Therefore, the present embodiment performs the functions of water level detection and water level determination of the water level determining apparatus through the float switch, and controls whether to send water level detection information to the controller according to the result of the water level determination. The float switch of this embodiment judges the inflow through the water level height in the inner bag, and the precision is high. And the float switch is controlled by weak current, the working current is in mA level, and the safety and the reliability are realized.
The above embodiments may be implemented individually or in combination. Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The water inlet control method of the dish washing machine is characterized in that the water inlet stage comprises a plurality of water inlet periods which are sequentially executed until the water inlet stage is finished or the water inlet stage is suspended.
2. The method of claim 1, wherein the number of the plurality of water intake cycles is N, N > 1; if the current water level does not reach the preset water level after the last water inlet period is executed in the water inlet stage of the dish-washing machine, alarming;
preferably, the alarm comprises an audible/visual alarm to indicate water shortage;
preferably, if the dishwasher water inlet stage is executed after the last water inlet period, the current water level still does not reach the preset water level; the dishwasher stops the water intake and the water intake phase ends.
3. The method of claim 2, wherein the water inlet stage is suspended after each water inlet cycle is finished, and the judgment of whether the current water level reaches the preset water level is performed: if the current water level does not reach the preset water level, controlling the inflow water to enter the next water inflow period and continuously inflow water into the dish washing machine; otherwise, stopping water inflow, and ending the water inflow stage.
4. The method of claim 2 or 3, wherein the determination of whether the current water level reaches the preset water level is performed in real time during each water intake cycle; and if the current water level reaches the preset water level, stopping water inflow, and ending the water inflow stage.
5. The method of claim 2, wherein at least two of the N water intake periods have different time durations;
preferably, the time length of the first water inlet period in the water inlet stage is longest;
further preferably, the number of the water inlet periods is 2, and the time length of the first water inlet period is longer than that of the second water inlet period.
6. The method of claim 2, wherein the N water supply periods have the same time duration.
7. A dishwasher, comprising: a control device; the control device controls a plurality of water inlet periods which are sequentially executed in the water inlet stage of the dish washing machine until the water inlet stage is finished or the water inlet stage is suspended.
8. The dishwasher of claim 7, wherein the control device of the dishwasher comprises:
the water level judging device is used for judging whether the current water level in the dish washing machine reaches a preset water level or not;
the clock unit is used for sequentially setting a plurality of water inlet periods in the water inlet stage;
the controller is in circuit connection with the water level judgment device and the clock unit, and controls the water level judgment device to judge whether the current water inflow reaches a preset water level after each water inflow period is finished until the water inflow stage is finished or is suspended;
preferably, the water level judging device comprises a water level detecting device and a judging device, wherein the water level detecting device and the judging device are electrically connected with each other and are used for detecting the current water level in the dishwasher and judging whether the current water level reaches a preset water level; the water level detection device is arranged in the dishwasher and sends current water level information to the judgment device, and the judgment device judges whether the current water level reaches a preset water level according to the water level information;
preferably, the water level judging device is arranged in the dishwasher and is provided with a signal transmitting circuit for transmitting water level information to the controller; the signal transmitting circuit is a normally open circuit, is switched on and closed only when the water level in the dish washer reaches a preset water level, and transmits a water level information signal to the controller;
further preferably, the signal transmitting circuit comprises a normally open switch, and when the normally open switch is closed, the signal transmitting circuit is switched on and closed and transmits the water level information signal to the controller; the water level judging device is also provided with a float switch which is connected with the normally open switch and is used for controlling the normally open switch, the float switch comprises a float, the float moves up and down along with the rise and fall of the liquid level in the dishwasher, and when the float reaches a preset water level, the normally open switch is controlled to be closed, and the signal sending circuit is switched on;
further preferably, the dishwasher comprises an inner container for accommodating tableware, the float switch is arranged at the bottom of the inner container, and the float switch is electrically connected with the controller through a signal line.
9. The dishwasher of claim 8, further comprising a water inlet switch connected with the controller circuit and used for controlling the opening/closing of the water inlet channel of the dishwasher, wherein the controller controls the opening/closing of the water inlet switch, and the controller controls the water inlet switch to close the water inlet channel after receiving the information that the water level judging device judges that the current water level reaches the preset water level;
preferably, the water inlet period set by the clock unit comprises N water inlet periods, wherein N is greater than 1; and if the current water level does not reach the preset water level after the last water inlet period is executed in the water inlet stage of the dish washing machine, the controller controls the water inlet switch to close the water inlet waterway, and the water inlet stage is finished.
10. The dishwasher of claim 9, wherein the control device further comprises an alarm prompting device connected with the controller circuit, the water inlet period set by the clock unit comprises N water inlet periods, and N > 1; if the current water level still does not reach the preset water level after the last water inlet period is executed in the water inlet stage of the dish-washing machine, the controller indicates the alarm prompting device to send an alarm signal;
further preferably, the alarm signal includes an audible/visual alarm to indicate water shortage.
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| CN201810621763.6A CN110604527B (en) | 2018-06-15 | 2018-06-15 | Water inlet control method of dish washing machine and dish washing machine |
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| CN201810621763.6A CN110604527B (en) | 2018-06-15 | 2018-06-15 | Water inlet control method of dish washing machine and dish washing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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