CN112919555A

CN112919555A - Water purifier

Info

Publication number: CN112919555A
Application number: CN201911239053.8A
Authority: CN
Inventors: 朱泽春; 吴孟; 陆建土
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2021-06-08
Anticipated expiration: 2039-12-06
Also published as: CN112919555B

Abstract

The embodiment of the invention discloses a water purifier, which comprises a water circuit board and a core replacing operation device, wherein the water circuit board is provided with a filter element and a core replacing mechanism; the core changing mechanism bounces up the specified filter core after the core changing operation device is triggered so as to change the core conveniently. Through the scheme of the embodiment, a series of problems that the filter element is difficult and complicated to replace due, the filter element is not installed in place by a user and the filter element is replaced in a staggered manner are solved, manpower and material resources are reduced, and the user experience is improved.

Description

Water purifier

Technical Field

The embodiment of the invention relates to a design technology of household electrical appliances, in particular to a water purifier.

Background

Current purifier filter core is generally changed by professional on the home after the expiration, and especially conventional reverse osmosis water purification machine or ultrafiltration purifier are four-stage filtration system generally, and non-professional changes and probably has the filter core installation dislocation, does not target in place the scheduling problem, leads to the purifier to leak or unusual appearance such as unable work, however these works will consume very big manpower, material resources, and the loss is high, and user experience is poor.

Disclosure of Invention

The embodiment of the invention provides a water purifier, which can solve a series of problems that a filter element is difficult and complicated to replace due, the filter element is not installed in place when a user replaces the filter element by himself, and the filter element is replaced in a staggered manner, and can reduce manpower and material resources and improve the user experience.

In order to achieve the purpose of the embodiment of the invention, the embodiment of the invention provides a water purifier, which can comprise a water circuit board and a core changing operation device, wherein the water circuit board is provided with a filter element and a core changing mechanism;

the core changing mechanism bounces up the specified filter core after the core changing operation device is triggered so as to change the core conveniently.

In an exemplary embodiment of the present invention, the number of the filter elements may be at least two; the core changing mechanism can be arranged between the two filter elements;

and the core replacing driving unit drives and pops out the specified filter core in the two filter cores determined by the core replacing operation device.

In an exemplary embodiment of the present invention, the core changing driving unit is a core changing disc, and the core changing mechanism may further include: the device comprises a main control unit, a motor, a rotatable chuck and an ejection assembly; the rotatable chuck and the ejection assembly are arranged on the filter element mounting base of each filter element;

the main control unit is connected with a driving device of the motor;

the core changing disc is connected with the motor, and the core changing disc is provided with shifting teeth;

the rotatable chuck is provided with a meshing part of the poking teeth;

the rotatable chuck is also provided with a first clamping structure, and the first clamping structure is matched with a second clamping structure on the filter element to fix the filter element;

the ejection assembly is positioned below the filter element and used for ejecting the filter element.

In an exemplary embodiment of the present invention, the core changing mechanism that pops up the specified filter cartridge when the core changing operation device is triggered may include:

when the main control unit detects that a core replacing operation device corresponding to a filter core to be replaced is triggered, the main control unit controls the motor to start, and the motor drives the core replacing disc to start rotating; when the poking teeth rotate to the meshing part, the rotatable chuck starts to rotate under the driving of the core changing disc, when the rotatable chuck rotates to a preset position and/or rotates by a preset angle, the filter core to be replaced is unlocked, and the ejection assembly ejects the filter core to be replaced.

In an exemplary embodiment of the invention, when there are two filter cores, the main control unit controls the motor to rotate in different directions according to different triggered core changing operation devices, so as to drive the rotatable chuck on the filter core mounting base where the filter core corresponding to the triggered core changing operation device is located to rotate, thereby bouncing up the corresponding filter core.

In an exemplary embodiment of the present invention, the core-changing mechanism may further include: the position detection assembly is used for detecting whether the rotatable chuck rotates to a preset position or not;

the position detection assembly may include: a Hall element and a magnetic element arranged on the rotatable chuck;

the Hall element is connected with the main control unit and generates level signal conversion when the magnetic element reaches the preset position;

and when the main control unit detects the level signal change, the main control unit determines that the rotatable chuck rotates in place.

In an exemplary embodiment of the present invention, when the core changing operation device is triggered, the main control unit determines whether the filter core corresponding to the triggered core changing operation device is installed in place by detecting an initial level signal of the corresponding hall element.

In an exemplary embodiment of the invention, when a filter element to be replaced is positioned in front of a water inlet valve, and the main control unit detects that a core replacing operation device corresponding to the filter element to be replaced is triggered, whether the water inlet valve is closed or not is judged, the water inlet valve is reminded to be manually closed when the water inlet valve is judged not to be closed, whether a waterway of the water purifier needs to be decompressed or not is judged when the water inlet valve is judged to be closed, and a subsequent flow is executed according to a judgment result;

when the filter element to be replaced is positioned behind the water inlet valve, the main control unit closes the water inlet valve and the water pump and opens the waste water valve when detecting that the core replacing operation device corresponding to the filter element to be replaced is triggered, defaults that the pressure relief of the water path is finished after the waste water valve is opened for a preset time, and enters a core replacing treatment process after the water inlet valve, the water pump and the waste water valve are powered off.

In an exemplary embodiment of the present invention, the core-changing mechanism may further include: the pressure detection device is used for detecting the water pressure in the water channel of the water purifier when the core replacing operation device is triggered, converting a water pressure signal into a level signal and sending the level signal to the main control unit;

whether the water route of main control unit judgement water purifier need carry out the pressure release, carry out follow-up flow according to the judged result and can include: judging the level signal; when the level signal is a first level signal, determining that pressure relief is needed, and starting a water inlet valve, a water pump and a waste water valve to relieve pressure of the waterway; and when the level signal is a second level signal, determining that pressure relief is not needed, and controlling the motor to start after the water inlet valve, the water pump and the waste water valve are powered off to enter a core replacement processing flow.

In an exemplary embodiment of the invention, the motor is a direct current motor; in the rotation process of the motor, the main control unit detects the working current of the motor in real time, and when the working current is greater than or equal to a preset current threshold value, the rotatable chuck is determined to rotate in place; alternatively, the first and second electrodes may be,

the motor is a stepping motor; in the rotation process of the motor, the main control unit detects the step number of the motor in real time, and when the step number reaches a preset step number threshold value, the rotatable chuck is determined to rotate in place.

The beneficial effects of the embodiment of the invention can include:

the water purifier can comprise a water circuit board and a core replacing operation device, wherein the water circuit board is provided with a filter core and a core replacing mechanism; the core changing mechanism bounces up the specified filter core after the core changing operation device is triggered so as to change the core conveniently. Through the scheme of the embodiment, a series of problems that the filter element is difficult and complicated to replace due, the filter element is not installed in place by a user and the filter element is replaced in a staggered manner are solved, manpower and material resources are reduced, and the user experience is improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.

FIG. 1 is a block diagram showing the composition of a water purifier according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a core-changing driving unit controlling two filter cores according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a core-exchanging mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic view of the position of the engaging portion according to the embodiment of the present invention;

FIG. 5 is a schematic view of a core changing disk in accordance with an embodiment of the present invention;

FIG. 6 is a schematic diagram of a motor driving circuit according to an embodiment of the present invention;

FIG. 7 is a schematic view of a core changing process according to an embodiment of the present invention;

FIG. 8 is a circuit diagram of a pressure switch control circuit according to an embodiment of the present invention;

FIG. 9 is a schematic view of the connection position of the filter cartridge and the valve body according to the embodiment of the present invention;

FIG. 10 is a schematic diagram of a method of determining whether a line is vented for a filter cartridge positioned in front of a fill valve according to an embodiment of the present invention;

FIG. 11 is a schematic view of a method for determining whether a line is vented for a filter element placed behind a fill valve according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.

Example one

The embodiment of the invention provides a water purifier A, as shown in fig. 1, the water purifier A can comprise a water circuit board 1 and a core replacing operation device 2, wherein the water circuit board 1 is provided with a filter element 11 and a core replacing mechanism 12;

the core changing mechanism 12 springs up the designated filter element 11 after the core changing operation device 2 is triggered, so as to facilitate core changing.

In an exemplary embodiment of the present invention, as shown in fig. 2, the number of the filter cartridges 11 may be at least two; the core changing driving unit of the core changing mechanism 12 can be arranged between two filter cores (such as 11-1 and 11-2);

the core changing driving unit drives and pops out a specified filter core in the two filter cores determined by the core changing operation device 2.

In an exemplary embodiment of the present invention, as shown in fig. 3, 4 and 5, the core changing driving unit may be a core changing disc 123, and the core changing mechanism 12 may include: a main control unit 121, a motor 122, a rotatable chuck 124, and an ejection assembly 125; the rotatable chuck 124 and the ejection assembly 125 are both disposed on the filter cartridge mounting base 111 of each filter cartridge 11;

the main control unit 121 is connected with a driving device of the motor 122;

the core changing disc 123 is connected with the motor 122, and toggle teeth 1231 are arranged on the core changing disc 123;

the rotatable chuck 124 is provided with an engaging part 1241 of the pulling tooth 1231;

the rotatable chuck 124 is further provided with a first clamping structure 1242, and the first clamping structure 1242 is matched with the second clamping structure 112 on the filter element 11 to fix the filter element;

the ejector assembly 125 is positioned below the filter cartridge 11 for ejecting the filter cartridge.

when the main control unit 121 detects that the core changing operation device 2 corresponding to the filter core 11 to be replaced is triggered, the main control unit 121 controls the motor 122 to start, and the motor 122 drives the core changing disc 123 to start rotating; when the pulling teeth 1231 rotate to the engaging portions 1241, the rotatable chuck 124 starts to rotate under the driving of the core changing disk 123, and when the rotatable chuck 124 rotates to a preset position and/or rotates through a preset angle, the filter cartridge to be replaced is unlocked, and the ejector assembly 125 ejects the filter cartridge to be replaced.

In an exemplary embodiment of the present invention, when there are two filter cartridges, the main control unit 121 controls the motor 122 to rotate in different directions according to different triggered cartridge replacement operation devices, so as to drive the rotatable chuck on the filter cartridge mounting base where the filter cartridge corresponding to the triggered cartridge replacement operation device is located to rotate, thereby bouncing up the corresponding filter cartridge.

In the exemplary embodiment of the invention, the scheme of the embodiment realizes the convenient replacement of the filter element in the water purifier, and improves the user experience.

Example two

The embodiment is added with a position detection component on the basis of the first embodiment.

In an exemplary embodiment of the present invention, the core-changing mechanism 12 may further include: a position detecting assembly 126 for detecting whether the rotatable chuck 124 rotates to a preset position;

the position detection component 124 may include: a Hall element 126-1 and a magnetic element 126-2 disposed on the rotatable chuck 124;

the hall element 126-1 is connected with the main control unit 121, and level signal conversion occurs when the magnetic element 126-2 reaches the preset position;

the master control unit 121 determines that the rotatable chuck 124 is rotated into position when it detects the level signal change.

In an exemplary embodiment of the present invention, two filter cartridges may be controlled by one core exchanging mechanism 12, a core exchanging driving unit (e.g., a core exchanging disk 123) may be disposed between the filter cartridge mounting bases 111 of the two filter cartridges, and a sensing region may be disposed between the position detecting assembly 126 and the core exchanging driving unit, and the sensing region may be disposed as a region (which may be about 135 °) formed by the centers of the two filter cartridge mounting bases 111 and the core exchanging disk 123.

In an exemplary embodiment of the present invention, when a user triggers a core changing operation device corresponding to the core changing element 11-1, the motor 122 may drive the core changing disc 123 to rotate counterclockwise (the motor rotates forward), and after detecting a core changing start position (the hall element 126-1 may go from high level to low level) (the start position may be a position where the hall element can just detect the magnet 126-2 on the core changing disc 123), the operation may continue for a certain period of time (e.g., 500ms) to eject the core changing disc 11-1, so that the user may change the core changing disc. The motor can rotate clockwise again until the core changing disc 123 leaves the core changing area (the hall element 126-1 goes from low level to high level, and the hall element 126-1 cannot sense the position of the magnet 126-2), and the motor 122 stops working. Similarly, when the user triggers the core-changing operation device corresponding to the filter element 11-2, the motor 122 can rotate clockwise, and after the core-changing start position is detected, the filter element can continue to work for a certain time (for example, 500ms), the filter element is ejected, the user can replace the filter element, the motor 122 can rotate counterclockwise again until the core-changing disc 123 leaves the core-changing area, and the motor 122 stops working.

IN an exemplary embodiment of the present invention, as shown IN fig. 6, the motor driving chip U1 on the left side and the corresponding control circuit may be powered by 24V, IN1 and IN2 may be connected to the main control unit 121, and the main control unit 121 outputs high and low levels to IN1 and IN2 to control the voltage values of OUT1 and OUT2, so as to implement the forward and reverse rotation and stop functions of the motor; the Hall element detection circuit is arranged on the right side.

IN an exemplary embodiment of the present invention, when the Hall element 126-1 does not detect a signal, the IN4 theoretical voltage is 5V at this time; when the magnetic induction intensity reaches a certain level, a trigger IN the Hall element 126-1 is triggered to drive the output level state of the Hall element 126-1 to be converted, and at the moment, the IN4 theoretical voltage is 0V; that is, the output levels of the IN1 and IN2 from the main control unit 121 are controlled by detecting the voltage of the IN4, so that the motor 122 is driven to realize the ejection effect of the filter cartridge 11.

In an exemplary embodiment of the present invention, the position detection assembly 126 can be detected to control the operation of the motor 122, so as to realize an electrically controlled core changing function. When the core changing function is triggered, the position detection assembly 126 can detect whether the filter core is ejected, so as to control the stop and reset functions of the motor 122.

In an exemplary embodiment of the present invention, when the core changing operation device is triggered, the main control unit 121 determines whether the filter core corresponding to the triggered core changing operation device is installed in place by detecting an initial level signal of the corresponding hall element 126-1.

In an exemplary embodiment of the present invention, the filter cartridge in-place determination may be implemented by the position detection component 126: for example, after the power is supplied for 500ms, the state of the Hall element is detected, and the position of the disc is judged by reading the level of the IO port corresponding to the Hall element 126-1, so that whether the filter element is installed in place is determined; the magnet is located hall element top, and the voltage becomes the low level, and the filter core is bounced open.

EXAMPLE III

In this embodiment, a pressure relief determination process is added on the basis of the first or second embodiment, as shown in fig. 7.

In an exemplary embodiment of the present invention, when the filter element to be replaced is located in front of the water inlet valve, and the main control unit 121 detects that the core replacement operation device corresponding to the filter element to be replaced is triggered, it is determined whether the water inlet valve is closed, and when it is determined that the water inlet valve is not closed, it is prompted to manually close the water inlet valve, and when it is determined that the water inlet valve is closed, it is determined whether a waterway of the water purifier needs to be depressurized, and a subsequent flow is executed according to a determination result;

when the filter element to be replaced is located behind the water inlet valve, the main control unit 121 closes the water inlet valve and the water pump and opens the waste water valve when detecting that the core replacing operation device corresponding to the filter element to be replaced is triggered, defaults that the pressure relief of the water path is finished after the waste water valve is opened for a preset time, and enters a core replacing treatment process after the water inlet valve, the water pump and the waste water valve are powered off.

In an exemplary embodiment of the present invention, the core-changing mechanism 12 may further include: the pressure detection device 127 is used for detecting the water pressure in the water channel of the water purifier when the core replacing operation device is triggered, converting a water pressure signal into a level signal and sending the level signal to the main control unit 121;

the main control unit 121 determines whether the waterway of the water purifier needs to be depressurized, and executing the subsequent flow according to the determination result may include: judging the level signal; when the level signal is a first level signal, determining that pressure relief is needed, and starting a water inlet valve, a water pump and a waste water valve to relieve pressure of the waterway; and when the level signal is a second level signal, determining that pressure relief is not needed, and controlling the motor to start after the water inlet valve, the water pump and the waste water valve are powered off to enter a core replacement processing flow.

In an exemplary embodiment of the present invention, as shown in fig. 8, a pressure detection device 127 (e.g., a pressure switch) detection circuit is provided. When the pressure of the water path is low, the pressure switch is closed, for example, when the pipeline is free of water, the low-pressure switch is closed, and the IN5 processing theoretical voltage is 5V; that is, the output levels of the IN1 and IN2 from the main control unit 121 are controlled by detecting the voltage of the IN5, so that the motor 122 is driven to realize the ejection effect of the filter cartridge 11.

In an exemplary embodiment of the present invention, after triggering the core replacement operation, whether the pipeline is depressurized or not is determined, and two different manners may be adopted according to whether the filter core is placed in front of the water inlet valve or behind the water inlet valve (the filter core is a coarse filter core placed in front of the valve, and the filter core is a fine filter core placed behind the valve, such as RO, and the coarse filter core is placed in front of the valve to filter out impurities and large particulate matters before the fine filter core enters the fine filter, so as to prevent the fine filter core and the valve body from being blocked), wherein a schematic diagram of the arrangement position of the filter core may be as shown in fig..

1. For a cartridge placed in front of the inlet valve:

a. as shown in fig. 10, a user can manually close the three-way ball valve, cut off the water source of the water purifier, and select a filter element to be ejected through the core-changing operation device 2 (such as a button);

b. when the main control unit 121 detects that the trigger signal of the core changing operation device 2 is valid, the low-voltage switch detects the water pressure of the pipeline, when the single chip microcomputer reads that the IN5 is at a low level, the valve body and the pump continue to work to release the pressure of the pipeline, and when the single chip microcomputer reads that the IN5 is at a high level, the subsequent core changing operation is performed;

c. if the IN5 is read to be low level continuously for a certain time, if the IN5 is read within 15s, it indicates that the fittings (such as a pressure switch, a pump, a valve and the like) are abnormal or the three-way ball valve is not closed by a user, so that the pipeline is not decompressed, a buzzer can be triggered to alarm, the user is prompted, and the user can continue to trigger the core changing operation to decompress (because the performances of the pipeline and the fittings are inconsistent, the detection limit value of the low-pressure switch IN the embodiment of the invention is 15s, and the value can be adjusted according to the actual situation).

2. For a cartridge placed behind the inlet valve:

a. as shown in fig. 11, when the main control unit 121 detects that the trigger signal of the core changing operation device 2 is valid, the water inlet valve is closed;

b. after the waste water valve is opened for a certain time, if the time is 3 seconds, the water channel is defaulted to be decompressed, and subsequent core replacing operation is carried out (because the performances of the pipeline and the fittings are inconsistent, the waste water valve, or called a cleaning valve, is opened for 3 seconds, and in the embodiment of the invention, the value can be adjusted according to the actual situation).

Example four

On the basis of the third embodiment, the complete embodiment for replacing the filter element is provided.

IN an exemplary embodiment of the present invention, according to the determination of whether to eject the first filter element (e.g., filter element 1) or the second filter element (e.g., filter element 2) by the core changing operation device 2 read when the core changing is triggered, the high and low levels are output to IN1 and IN2 to control the voltage values of OUT1 and OUT2, when the main control unit 121 reads that the first filter element is triggered, after the pressure relief step is completed, IN1 is set to be at the high level, IN2 is set to be at the low level, the theoretical voltage value of OUT1 is VDD, the theoretical voltage value of OUT2 is GND, and the motor 122 rotates; on the contrary, when the main control unit 121 reads that the second filter element is triggered, the IN1 is set to be at a low level, the IN2 is set to be at a high level, the theoretical voltage value of the OUT1 is GND, the theoretical voltage value of the OUT2 is VDD, and the motor rotates reversely; according to the embodiment of the invention, the output levels of IN1 and IN2 can be adjusted according to different overall structures, and the filter elements at different positions are subjected to pop-up control through the forward and reverse rotation of the motor.

IN an exemplary embodiment of the invention, the position of the core changing disc 123 can be judged by the hall element, the magnet is placed below the core changing disc 123, the installation position of the hall element 126-1 can be as shown IN fig. 3, when the magnet below the core changing disc 123 rotates to above the hall element 126-1, the IN4 processing voltage is changed from 5V to 0V, the main control unit 121 reads that the IN4 is at a low level, the motor continues to work for 500ms, and when the low level is detected, the core changing disc 123 reaches the core changing starting position. In this process, the filter cartridge has been ejected by filter cartridge ejection assembly 125.

IN the exemplary embodiment of the present invention, the motor 122 operates for 500ms and then rotates IN the reverse direction, and when the IN4 is read to change from the low level to the high level, the core changing disc 123 leaves the core changing area, the IN1 and the IN2 are set to the high level, the motor 122 stops rotating, and the core changing is completed.

IN the exemplary embodiment of the present invention, the main control unit 121 controls the operating state of the motor through the hall element signal, after the pressure relief is completed, the main control unit 121 re-assigns the outputs to IN1 and IN2 to start timing, and if a certain time duration, for example, if the IN4 is not read as the low level after 8s, the output level state of the hall element 126-1 is not changed, which indicates that the motor component or the hall element is abnormal (because the performance of the pipeline and the accessory is not consistent, this example 8s can be adjusted according to the actual situation).

EXAMPLE five

On the basis of the first embodiment, the embodiment is provided for judging the position of the core changing disc 123 by detecting the current of the motor without a hall switch.

In an exemplary embodiment of the present invention, the motor may be a direct current motor; in the rotation process of the motor, the main control unit detects the working current of the motor in real time, and when the working current is larger than or equal to a preset current threshold value, the rotatable chuck is determined to rotate in place.

In an exemplary embodiment of the present invention, the master control board may be initialized with a timer and analog-to-digital (AD) sampling of the master control unit 121. Whether the original core replacing disc 123 rotates IN place is judged by detecting the IN5 level. Because when the motor 122 rotates to the right position, the rotatable chuck 124 can cause the motor 122 to block the rotation, the current is increased, and the alternative scheme can carry out AD sampling and judge whether the motor blocks the rotation or not, thereby judging whether the core changing disc 123 rotates to the right position or not and whether the filter core is popped up or not.

EXAMPLE six

The embodiment provides an embodiment that a hall switch is eliminated and a stepping motor is used for replacing a direct current motor on the basis of the first embodiment.

In an exemplary embodiment of the present invention, the motor 122 is a stepper motor; in the rotation process of the motor 122, the main control unit 121 detects the number of step steps of the motor 122 in real time, and determines that the rotatable chuck 124 rotates in place when the number of step steps reaches a preset step threshold.

In an exemplary embodiment of the present invention, whether the core changing disk 123 is rotated to the position may be determined by the number of steps of the stepping motor. In a specific example, the number of steps may be adjusted according to the actual rotation angle.

EXAMPLE seven

On the basis of the third embodiment, the embodiment adopts the electric three-way ball valve to replace the common three-way ball valve.

In the exemplary embodiment of the invention, in the original scheme, for the filter element placed in front of the water inlet valve, a user is required to manually cut off the water source when the filter element is replaced; in this embodiment, an electric three-way ball valve may be used to replace a common three-way ball valve, and after the core replacement function is triggered, the main control unit 121 may close the three-way ball valve by controlling one IO port, thereby ensuring pressure relief of the pipeline.

It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.

Claims

1. A water purifier is characterized by comprising a water circuit board and a core replacing operation device, wherein the water circuit board is provided with a filter element and a core replacing mechanism;

2. The water purifier of claim 1, wherein the number of the filter elements is at least two; a core replacing driving unit of the core replacing mechanism is arranged between the two filter cores;

3. The water purifier according to claim 1 or 2, wherein the refill driving unit is a refill disc, and the refill mechanism further comprises: the device comprises a main control unit, a motor, a rotatable chuck and an ejection assembly; the rotatable chuck and the ejection assembly are arranged on the filter element mounting base of each filter element;

the main control unit is connected with a driving device of the motor;

the rotatable chuck is provided with a meshing part of the poking teeth;

4. The water purifier according to claim 3, wherein the core-changing mechanism bouncing up the designated filter element when the core-changing operation means is triggered comprises:

5. The water purifier as claimed in claim 4, wherein when there are two filter elements, the main control unit controls the motor to rotate in different directions according to different activated filter element changing operation devices, so as to drive the rotatable chuck on the filter element mounting base of the filter element corresponding to the activated filter element changing operation device to rotate, thereby bouncing up the corresponding filter element.

6. The water purifier according to claim 3, wherein the core-changing mechanism further comprises: the position detection assembly is used for detecting whether the rotatable chuck rotates to a preset position or not;

the position detection assembly includes: a Hall element and a magnetic element arranged on the rotatable chuck;

7. The water purifier according to claim 6, wherein the main control unit determines whether the filter cartridge corresponding to the triggered core changing operation device is mounted in place by detecting an initial level signal of the corresponding hall element when the core changing operation device is triggered.

8. The water purifier according to claim 3,

when the filter element to be replaced is positioned in front of the water inlet valve, the main control unit judges whether the water inlet valve is closed or not when detecting that the core replacing operation device corresponding to the filter element to be replaced is triggered, and reminds the manual closing of the water inlet valve when judging that the water inlet valve is not closed, judges whether the waterway of the water purifier needs to be decompressed or not when judging that the water inlet valve is closed, and executes the subsequent flow according to the judgment result;

9. The water purifier of claim 8, wherein the core-changing mechanism further comprises: the pressure detection device is used for detecting the water pressure in the water channel of the water purifier when the core replacing operation device is triggered, converting a water pressure signal into a level signal and sending the level signal to the main control unit;

whether the water route of main control unit judgement water purifier need carry out the pressure release, carry out follow-up flow according to the judged result and include: judging the level signal; when the level signal is a first level signal, determining that pressure relief is needed, and starting a water inlet valve, a water pump and a waste water valve to relieve pressure of the waterway; and when the level signal is a second level signal, determining that pressure relief is not needed, and controlling the motor to start after the water inlet valve, the water pump and the waste water valve are powered off to enter a core replacement processing flow.

10. The water purifier according to claim 4 or 5, wherein the motor is a direct current motor; in the rotation process of the motor, the main control unit detects the working current of the motor in real time, and when the working current is greater than or equal to a preset current threshold value, the rotatable chuck is determined to rotate in place; alternatively, the first and second electrodes may be,