Patent Publication Number: US-2023145861-A1

Title: Water conditioning system of an edr water purifier

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a water conditioning system of a water purifier, especially to a water conditioning system of an electrodialysis reversal (EDR) water purifier. 
     2. Description of the Prior Art(s) 
     With improvement of people&#39;s quality of life, many families have water purifiers installed in their houses, so as to ensure the safety of drinking water. However, when using the water purifier, including an electrodialysis reversal (EDR) water purifier, quality of discharged water changes according to quality of source water and purifying capacity of the water purifier. If the quality of the discharged water is not adjusted at any time, the quality of the discharged water that has been purified and tastes of water would be affected. Moreover, when brewing tea or coffee, water having a specific quality is especially required for making a good cup of tea or coffee. 
     A conventional way to solve the above-mentioned problem and to improve the quality of the water that has been purified is to clean an EDR film stack regularly, which is time consuming and laborious. 
     To overcome the shortcomings, the present invention provides a water conditioning system of an EDR water purifier to mitigate or obviate the aforementioned problems. 
     SUMMARY OF THE INVENTION 
     The main objective of the present invention is to provide a water conditioning system of an electrodialysis reversal (EDR) water purifier. The water conditioning system includes a first source water inlet, a second source water inlet, an EDR film stack, a first conductive probe, a second conductive probe, a third conductive probe, a fourth conductive probe, a variable speed pump, a one-way valve, a clean water outlet, a waste water outlet, an electrode A, an electrode B, and a control system module. 
     The EDR film stack has a first inlet port, a second inlet port, a first outlet port, and a second outlet port. The first source water inlet, the first conductive probe, and the first inlet port of the EDR film stack are connected in sequence. The second source water inlet, the one-way valve, the third conductive probe, and the second inlet port of the EDR film stack are connected in sequence. The first outlet port, the second conductive probe, and the clean water outlet are connected in sequence. The second outlet port of the EDR film stack, the fourth conductive probe, and the waste water outlet are connected in sequence. 
     The variable speed pump has two ends connected to the third conductive probe and the waste water outlet respectively. The electrode A and the electrode B have opposite polarities and are disposed at two sides of the EDR film stack. The control system module is electrically connected with the first conductive probe, the second conductive probe, the third conductive probe, the fourth conductive probe, the variable speed pump, the electrode A, and the electrode B. 
     With the four conductive probes detecting conductivity of water flowing through four ports on the two sides of the EDR film stack and by sending detected data to the control system module, the control system module adjusts voltages of the electrode A and electrode B accordingly to instantly increase or decrease removal efficiency of the EDR film stack. Thus, the conductivity of the discharged clean water and the quality of the clean water can be stabilized. 
     Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The FIGURE is a schematic diagram of an electrodialysis reversal (EDR) water purifier in accordance with the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     With reference to the FIGURE, a water conditioning system of an electrodialysis reversal (EDR) water purifier in accordance with the present invention includes a first source water inlet  1 , a second source water inlet  6 , an EDR film stack  3 , a first conductive probe  2 , a second conductive probe  4 , a third conductive probe  8 , a fourth conductive probe  10 , a variable speed pump  9 , a one-way valve  7 , a clean water outlet  5 , a waste water outlet  12 , an electrode A  18 , an electrode B  19 , and a control system module  20 . The EDR film stack  3  has a first inlet port  14 , a second inlet port  15 , a first outlet port  16 , and a second outlet port  17 . The first source water inlet  1 , the first conductive probe  2 , and the first inlet port  14  of the EDR film stack  3  are connected in sequence. The second source water inlet  6 , the one-way valve  7 , the third conductive probe  8 , and the second inlet port  15  of the EDR film stack  3  are connected in sequence. The first outlet port  16 , the second conductive probe  4 , and the clean water outlet  5  are connected in sequence. The second outlet port  17  of the EDR film stack  3 , the fourth conductive probe  10 , and the waste water outlet  12  are connected in sequence. The variable speed pump  9  is a water pump with adjustable pump rotational speed and has two ends connected to the third conductive probe  8  and the waste water outlet  12  respectively. The electrode A  18  and the electrode B  19  have opposite polarities and are disposed at two sides of the EDR film stack  3 . The control system module  20  is electrically connected with the first conductive probe  2 , the second conductive probe  4 , the third conductive probe  8 , the fourth conductive probe  10 , the variable speed pump  9 , the electrode A  18 , and the electrode B  19 . 
     The water conditioning system may further include an adjustable throttle  11 . The adjustable throttle  11  has two ends connected with the fourth conductive probe  10  and the waste water outlet  12  respectively. The control system module  20  is electrically connected with the adjustable throttle  11 . With the adjustable throttle  11 , conductivity of water that flows through the waste water outlet  12  can be controlled, so as to avoid excessive conductivity of the water and to prevent the waste water outlet  12  from furring up quickly. Moreover, flow of the water that is discharged from the waste water outlet  12  can be optimized, and source water that is used to be purified can be conserved. 
     The water conditioning system may further include a rinsing solenoid valve  13 . The rinsing solenoid valve  13  has two ends connected with the variable speed pump  9  and the waste water outlet  12  respectively. The control system module  20  is electrically connected with the rinsing solenoid valve  13 . With the rinsing solenoid valve  13 , the conductivity of the water that flows through the waste water outlet  12  can be controlled, so as to avoid excessive conductivity of the water and to prevent the waste water outlet  12  from furring up quickly. Moreover, the flow of the water that is discharged from the waste water outlet  12  can be optimized, and the source water that is used to be purified can be conserved. 
     Embodiment 
     With reference to  FIG.  1   , a water conditioning system of an EDR water purifier in accordance with the present invention includes a first source water inlet  1 , a second source water inlet  6 , an EDR film stack  3 , a first conductive probe  2 , a second conductive probe  4 , a third conductive probe  8 , a fourth conductive probe  10 , a variable speed pump  9 , a one-way valve  7 , a clean water outlet  5 , a waste water outlet  12 , an electrode A  18 , an electrode B  19 , a control system module  20 , an adjustable throttle  11 , and a rinsing solenoid valve  13 . The EDR film stack  3  has a first inlet port  14 , a second inlet port  15 , a first outlet port  16 , and a second outlet port  17 . The first source water inlet  1 , the first conductive probe  2 , and the first inlet port  14  of the EDR film stack  3  are connected in sequence. The second source water inlet  6 , the one-way valve  7 , the third conductive probe  8 , and the second inlet port  15  of the EDR film stack  3  are connected in sequence. The first outlet port  16 , the second conductive probe  4 , and the clean water outlet  5  are connected in sequence. The second outlet port  17  of the EDR film stack  3 , the fourth conductive probe  10 , and the waste water outlet  12  are connected in sequence. The variable speed pump  9  is a water pump with adjustable pump rotational speed and has two ends connected to the third conductive probe  8  and the waste water outlet  12  respectively. The adjustable throttle  11  has two ends connected with the fourth conductive probe  10  and the waste water outlet  12  respectively. The rinsing solenoid valve  13  has two ends connected with the variable speed pump  9  and the waste water outlet  12  respectively. The control system module  20  is electrically connected with the first conductive probe  2 , the second conductive probe  4 , the third conductive probe  8 , the fourth conductive probe  10 , the variable speed pump  9 , the electrode A  18 , the electrode B  19 , the adjustable throttle  11 , and the rinsing solenoid valve  13 . 
     Working principle of the water conditioning system of the EDR water purifier is described as follows. With the four conductive probes  2 ,  4 ,  8 ,  10  detecting the conductivity of the water flowing through the two inlet ports  14 ,  15  and the two outlet ports  16 ,  17  and sending detected data to the control system module  20 , the control system module  20  adjusts voltages of the electrode A  18  and the electrode B accordingly, so as to instantly increase or decrease removal efficiency of the EDR film stack  3 . Thus, the conductivity of the discharged clean water can be stabilized and the quality of the clean water can also be stabilized. Moreover, the control system module  20  controls the adjustable throttle  11 , the rinsing solenoid valve  13  according to the conductivity of the water discharged from the waste water outlet  12 , so as to control the conductivity of the water discharged from the waste water outlet  12 . Thus, excessive conductivity of the water discharged from the waste water outlet  12  can be avoided and the waste water outlet  12  does fur up quickly. The flow of the water discharged from the waste water outlet  12  can be optimized, and the source water that is used to be purified can be conserved. 
     Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.