Power supply control method for an ozone water generator

Abstract

The application discloses a power supply control method of an ozone water generating device. The electrolytic electrode plate assembly of the ozone water generating device comprises an anode group composed of a plurality of anode sheets, a cathode group I composed of a plurality of cathode sheets I, and a cathode group II composed of a plurality of cathode sheets II. The cathode sheet I is made of a punched titanium plate or a punched stainless steel plate, the cathode sheet II is made of a titanium plate or a stainless steel plate, and the anode sheet is made of a doped tin dioxide titanium anode plate. In the process of electrolyzing water, the two cathode groups alternately obtain short-time high levels, and the two cathode groups obtain low levels at other times, so that the scale on the surface of the cathode is removed in time during the use of the device, the electrolysis efficiency of the device is ensured, the device does not need to be descaled by using a medicament and does not need to be maintained, and the user has a good use experience. In addition, the scale is removed during the working process, the generated gas is discharged along with the water flow, and the device does not need a gas discharge port. The control circuit adopts a field effect tube as a power switch switching device, and the high-speed switching can be realized due to the absence of a contact. The application has the advantages of simple structure, stable operation and good descaling effect.

Description

TECHNICAL FIELD

[0001] The application relates to a power supply control method of an ozone water generating device and belongs to the technical field of electrolytic water ozone generation. BACKGROUND

[0002] Ozone can be generated by electrolyzing tap water under the action of an electric field and an anode catalyst. The electrolysis process is very complex, and the generation mechanism of the electrolysis process is as follows:

[0003] Main anode reaction: 3H2O -> O3+ 6H + + 6e –

[0004] Anode side reaction: 2H2O -> O2+ 4H + + 4e –

[0005] Main cathode reaction: 2H + + 2e – -> H2

[0006] Ozone generated by electrolysis is rapidly combined with water to form ozone water, and the ozone water has a very high oxidation potential. It can instantly react with organic matter in water to oxidize the organic matter into stable substances harmless to human bodies, and therefore can be used for water purification, disinfection and sterilization. The method for generating ozone water by electrolyzing tap water has been widely applied to the fields of removing pesticide residues, insect eggs and microorganisms from food in a vegetable washing machine and the like.

[0007] However, there is a side reaction at the cathode during the electrolysis of tap water, and calcium and magnesium ions in the water will accumulate at the cathode, and scale will gradually form on the surface of the cathode. The scale is difficult to remove, especially in the case of poor water quality and more scale accumulation, which will seriously affect the electrolysis efficiency of the ozone water generating device. The current method is to remove scale by means of chemicals or work intermittently. The method of using chemicals requires that the ozone water generating device be disassembled and soaked in a chemical solution, and then cleaned and assembled again. The user's use and maintenance are complicated, and the use experience is poor. The existing scale removal technology adopts a power supply control method of work intermittently removing scale. The gas generated during the scale removal process increases the internal pressure, and a gas discharge port is needed. The equipment structure is complex, the cost is increased, and the power switch switching device adopts a relay. Frequent switching can easily cause the relay contact to be damaged due to sparking. SUMMARY

[0008] The application aims to overcome the shortcomings of the prior art and provide an ozone water generating device and a power supply control method thereof.

[0009] The technical scheme provided by the application is as follows: a power supply control method of an ozone water generator, characterized in that during the working process of the ozone water generator, a high level is supplied to the anode group in a cycle period; in the same cycle period, a low level is supplied to the cathode group I for TA seconds, then a high level is supplied to the cathode group I for TB seconds, and then the low level is supplied again; in the same cycle period, a low level is supplied to the cathode group II for 2TA+TB seconds, then a high level is supplied to the cathode group II for TB seconds, and then the low level is supplied again to enter the next cycle, and the time of one cycle period is 2TA+2TB, TB is greater than (1 / 15)*(TA+TB) and less than (4 / 5)*(TA+TB).

[0010] Further, TA+TB=30 seconds, and TB=5 seconds.

[0011] Further, the ozone water generator comprises an electrolytic water tank, a power supply control circuit and a flow switch which are connected with each other; the top cover of the electrolytic water tank is sealingly connected to the top of the shell of the electrolytic water tank, and the top cover is provided with a water inlet and a water outlet; the electrolytic water tank is provided with an electrolytic electrode plate assembly in the shell thereof, the electrolytic electrode plate assembly comprises an anode group composed of a plurality of anode plates, a cathode group I composed of a plurality of cathode plates I, and a cathode group II composed of a plurality of cathode plates II, the cathode plates I of the cathode group I are made of punched titanium plates or punched stainless steel plates, the cathode plates II of the cathode group II are made of titanium plates or stainless steel plates, and the anode plates of the anode group are made of doped tin dioxide titanium anode plates; each of the anode plates of the anode group is connected with an anode conductive sheet, each of the cathode plates I of the cathode group I is connected with a cathode I conductive sheet, each of the cathode plates II of the cathode group II is connected with a cathode II conductive sheet, the lower end of the anode conductive sheet is provided with an anode conductive column, the lower end of the cathode I conductive sheet is provided with a cathode I conductive column, and the lower end of the cathode II conductive sheet is provided with a cathode II conductive column; the bottom inside of the shell and the top inside of the top cover are respectively provided with a bottom electrode plate isolation strip and a top electrode plate isolation strip which correspond to each other, and each of the cathode plates I, each of the cathode plates II and each of the anode plates is inserted into the top electrode plate isolation groove formed between the top electrode plate isolation strips and the bottom electrode plate isolation groove formed between the bottom electrode plate isolation strips.

[0012] Further, the electrolytic electrode plate assembly comprises an anode group composed of n anode plates, a cathode group I composed of 2n cathode plates I, and a cathode group II composed of 2 cathode plates II, n is a natural number greater than or equal to 1; the cathode plates I and the anode plates are distributed in sequence with intervals, and the cathode plates II are arranged outside the outermost cathode plates I.

[0013] Further, the electrolytic plate assembly comprises an anode group composed of n anode sheets, a cathode group I composed of 2n cathode sheets I, a cathode group II composed of n+1 cathode sheets II, and n is a natural number greater than or equal to 1; the cathode sheets I, the cathode sheets II and the anode sheets are distributed in sequence with intervals.

[0014] Further, the power supply control circuit comprises a single-chip microcomputer module, a power supply module and an electrolytic plate control circuit connected with each other; the flow switch is connected to a signal input end of the single-chip microcomputer module, a power input end of the power supply module is connected to a commercial power supply, the power supply module has two output paths, one of which outputs 5V stabilized voltage to the single-chip microcomputer module to supply power to the single-chip microcomputer module, and the other of which provides constant current output to supply power to the electrolytic plate control circuit, a positive electrode of the constant current output of the power supply module is connected to one end of resistors R1, R2 and R3 and the source electrodes of P-channel MOS tubes P1, P2 and P3, the other ends of the resistors R1, R2 and R3 are connected to the gate electrodes of the P-channel MOS tubes P1, P2 and P3 respectively, the gate electrodes of the P-channel MOS tubes P1, P2 and P3 are also connected to the drain electrodes of N-channel MOS tubes MN1, MN2 and MN3 respectively, the gate electrodes of the N-channel MOS tubes MN1 and MN2 are connected to the gate electrodes of the P-channel MOS tubes P2 and P3 respectively, and the drain electrodes of the N-channel MOS tubes MN1 and MN2 are connected to the drain electrodes of the P-channel MOS tubes P2 and P3 respectively; a negative electrode of the constant current output of the power supply module is connected to the source electrodes of the N-channel MOS tubes MN1, MN2, MN3, N1 and N2; the gate electrodes of the N-channel MOS tubes MN1, MN2 and MN3 are connected to a control output end of the single-chip microcomputer module; the drain electrode of the P-channel MOS tube P1 is connected to an anode conductive column on the outer side of the bottom of a shell of an electrolytic water tank; the drain electrodes of the P-channel MOS tube P2 and the N-channel MOS tube N1 are connected to a cathode I conductive column on the outer side of the bottom of the shell of the electrolytic water tank; and the drain electrodes of the P-channel MOS tube P3 and the N-channel MOS tube N2 are connected to a cathode II conductive column on the outer side of the bottom of the shell of the electrolytic water tank.

[0015] Further, the power supply control method of the ozone water generator comprises the following steps.

[0016] 1) install the electrolytic water tank and flow switch on the water supply pipeline, connect the water source and power supply, when on standby, the control output end of the single-chip microcomputer module provides a low-level signal to the gate of N-channel MOS tube MN1, the gate of N-channel MOS tube MN2, and the gate of N-channel MOS tube MN3, N-channel MOS tube MN1, N-channel MOS tube MN2, and N-channel MOS tube MN3 are cut off, P-channel MOS tube P1, P-channel MOS tube P2, and P-channel MOS tube P3 are cut off, N-channel MOS tube N1 and N-channel MOS tube N2 are turned on, cathode group I and cathode group II are connected with the constant current output end V- of the power supply module, the anode group is disconnected with the constant current output end V+ of the power supply module, the electrolysis assembly is not powered, and the ozone water generating device is in a stopped working state;

[0017] 2) when using water, the flow switch is closed, the signal input end of the single-chip microcomputer module obtains the flow switch closing signal, the control output end provides a high-level signal for the gate of N-channel MOS tube MN1, provides a low-level signal for the gate of N-channel MOS tube MN2 and the gate of N-channel MOS tube MN3, N-channel MOS tube MN1 is turned on, N-channel MOS tube MN2 and N-channel MOS tube MN3 are cut off, P-channel MOS tube P1 is turned on, P-channel MOS tube P2 and P-channel MOS tube P3 are cut off, N-channel MOS tube N1 and N-channel MOS tube N2 are turned on, the anode group is in communication with the constant current output end V+ of the power supply module, the cathode group I and the cathode group II are in communication with the constant current output end V- of the power supply module, the ozone water generating device forms an electrolysis power supply loop through the anode group and the cathode group I and the cathode group II, and starts to electrolyze water to generate ozone water; after a time TA, the control output end of the single-chip microcomputer module provides a high-level signal for the gate of N-channel MOS tube MN2, P-channel MOS tube P2 is turned on, N-channel MOS tube N1 is cut off, the cathode group I is in communication with the constant current output end V+ of the power supply module, the ozone water generating device forms an electrolysis power supply loop through the anode group and the cathode group II, starts to electrolyze water to generate ozone water, and meanwhile the cathode group I forms another power supply loop with the cathode group II, and the water scale formed on the cathode group I falls off under the action of an electric field; after a time TB, the control output end of the single-chip microcomputer module provides a low-level signal for the gate of N-channel MOS tube MN2, P-channel MOS tube P2 is cut off, N-channel MOS tube N1 is turned on, the cathode group I is in communication with the constant current output end V- of the power supply module, an electrolysis power supply loop is formed through the anode group and the cathode group I and the cathode group II, and water continues to be electrolyzed to generate ozone water; after a time TA, the control output end of the single-chip microcomputer module provides a high-level signal for the gate of N-channel MOS tube MN3, N-channel MOS tube N2 is cut off, P-channel MOS tube P3 is turned on, the cathode group II and the anode group are in communication with the constant current output end V+ of the power supply module, the cathode group I is in communication with the constant current output end V- of the power supply module, the ozone water generating device forms an electrolysis power supply loop through the anode group and the cathode group I, and water continues to be electrolyzed to generate ozone water; meanwhile, the cathode group II forms another power supply loop with the cathode group I, and the water scale formed on the cathode group II falls off under the action of an electric field; after a time TB, the control output end of the single-chip microcomputer module provides a low-level signal for the gate of N-channel MOS tube MN3, P-channel MOS tube P3 is cut off, N-channel MOS tube N2 is turned on, the cathode group II is in communication with the constant current output end V- of the power supply module, the ozone water generating device forms an electrolysis power supply loop through the anode group and the cathode group I and the cathode group II, and water continues to be electrolyzed to generate ozone water; the next cycle is entered, and the foregoing actions are repeated;

[0018] 3) stop using water, flow switch is off, the signal input end of the single-chip microcomputer module obtains the flow switch off signal, the control output end provides low level signal for the gate of N-channel MOS tube MN1, N-channel MOS tube MN2 and N-channel MOS tube MN3, N-channel MOS tube MN1, N-channel MOS tube MN2 and N-channel MOS tube MN3 are cut off, P-channel MOS tube P1, P-channel MOS tube P2 and P-channel MOS tube P3 are cut off, N-channel MOS tube N1 and N-channel MOS tube N2 are turned on, cathode group I and cathode group II are connected with the constant current output end V- of the power supply module, the anode group is disconnected with the constant current output end V+ of the power supply module, the electrolysis assembly is not powered, and the ozone water generating device enters standby state.

[0019] The beneficial effects of the present application are that the device of the present application is provided with two cathode groups, and in the working process, the power supply control method of the present application is that the two cathode groups obtain short-time high level alternately in the process of electrolyzing water, and the two cathode groups obtain low level at other times, so that the scale on the surface of the cathode is removed in time during the use of the ozone water generating device, thereby ensuring the electrolysis efficiency of the ozone water generating device, without the need of removing scale by chemicals and without the need of maintenance, and the user has good use experience. And scale is removed at the same time in the working process, and the generated gas is discharged with water flow, without the need of a gas discharge port. The control circuit adopts field effect tubes as power switch switching devices to realize high-speed switching without contact. The present application has simple structure, stable operation and good scale removal effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The figure is a structural block diagram of the device of the present application;

[0021] Figure 2 The figure is a structural schematic diagram of the electrolysis water tank of the present application;

[0022] Figure 3 The figure is a structural schematic diagram of the electrolysis electrode plate assembly of the present application;

[0023] Figure 4 The figure is a structural schematic diagram of the electrolysis water tank for enhancing scale removal effect of the present application;

[0024] Figure 5 The figure is a structural schematic diagram of the electrolysis electrode plate assembly for enhancing scale removal effect of the present application;

[0025] Figure 6 The figure is a control circuit schematic diagram of the present application.

[0026] Figure 7 The figure is a working process waveform diagram of each electrode group of the present application. DETAILED DESCRIPTION

[0027] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings:

[0028] As Figure 1 shown, an ozone water generating device includes electrolytic water tank 1, power supply control circuit 2 and flow switch 3 connected to each other.

[0029] As Figure 2 , Figure 3 shown, the electrolytic water tank 1 includes a shell 12, which is provided with an electrolytic electrode plate assembly 11 inside. The electrolytic electrode plate assembly 11 includes an anode group 111 composed of n anode sheets, a cathode group I 112 composed of 2n cathode sheets I, and a cathode group II 113 composed of 2 cathode sheets II. n is a natural number ≥1, and in this embodiment, n=2, i.e. 2 anode sheets form the anode group 111, 4 cathode sheets I form the cathode group I 112, and 2 cathode sheets II form the cathode group II 113. The cathode sheets I and the anode sheets are distributed in sequence with intervals, and the cathode sheets II are placed outside the outermost cathode sheets I. The cathode sheets I of the cathode group I 112 are punched titanium plates or punched stainless steel plates, the cathode sheets II of the cathode group II 113 are titanium plates or stainless steel plates, and the anode sheets of the anode group 111 are doped tin dioxide titanium anode plates. Each anode sheet of the anode group 111 is connected to an anode conductive sheet 114, the lower end of the anode conductive sheet 114 is provided with an anode conductive column 117, and the anode conductive column 117 penetrates through the bottom of the shell 12 of the electrolytic water tank 1. Each cathode sheet I of the cathode group I 112 is connected to a cathode I conductive sheet 115, the lower end of the cathode I conductive sheet 115 is provided with a cathode I conductive column 118, and the cathode I conductive column 118 penetrates through the bottom of the shell 12 of the electrolytic water tank 1. Each cathode sheet of the cathode group II 113 is connected to a cathode II conductive sheet 116, the lower end of the cathode II conductive sheet 116 is provided with a cathode II conductive column 119, and the cathode II conductive column 119 penetrates through the bottom of the shell 12 of the electrolytic water tank 1. The upper part of the shell 12 is sealingly connected to the top cover 13 of the electrolytic water tank 1, and the top cover 13 is provided with a water inlet 131 and a water outlet 132. The bottom inside of the shell 12 and the top inside of the top cover 13 are respectively provided with corresponding bottom electrode sheet isolation strips 121 and top electrode sheet isolation strips 133, the adjacent bottom electrode sheet isolation strips 121 form bottom electrode sheet isolation grooves, the adjacent top electrode sheet isolation strips 133 form top electrode sheet isolation grooves, and the upper and lower ends of each cathode sheet I, each cathode sheet II and each anode sheet are inserted into the corresponding top electrode sheet isolation grooves and bottom electrode sheet isolation grooves to achieve electrical isolation and avoid short circuit between adjacent electrode sheets.

[0030] As Figure 4 , Figure 5To further improve the descaling effect, the electrolytic electrode plate assembly 11 comprises an anode group 111 composed of n anode sheets, a cathode group I 112 composed of 2n cathode sheets I, and a cathode group II 113 composed of n+1 cathode sheets II, where n is a natural number greater than or equal to 1; in this embodiment, n = 2, i.e. 2 anode sheets form the anode group 111, 4 cathode sheets I form the cathode group I 112, and 3 cathode sheets II form the cathode group II 113. The cathode sheets I, the cathode sheets II, and the anode sheets are distributed in sequence with intervals.

[0031] As Figure 6As shown, the power supply control circuit 2 comprises a single-chip microcomputer module 22, a power supply module 21 and an electrolytic plate control circuit 23 connected with each other. The flow switch 3 is connected to the signal input end of the single-chip microcomputer module 22, the power input end of the power supply module 21 is connected to the mains, the power supply module 21 has two output ends, one of which outputs 5V stabilized voltage to the single-chip microcomputer module 22 to supply power to the single-chip microcomputer module 22, and the other of which provides constant current output to supply power to the electrolytic plate control circuit 23, the anode of the constant current output of the power supply module 21 is connected to one end of resistors R1, R2, R3 and the source of P-channel MOS tube P1 (HM4458E), the source of P-channel MOS tube P2 (HM4458E) and the source of P-channel MOS tube P3 (HM4458E), the other end of the resistors R1, R2, R3 is connected to the gate of P-channel MOS tube P1, the gate of P-channel MOS tube P2 and the gate of P-channel MOS tube P3 respectively, the gate of P-channel MOS tube P1, the gate of P-channel MOS tube P2 and the gate of P-channel MOS tube P3 are also connected to the drain of N-channel MOS tube MN1 (CJ8810), the drain of N-channel MOS tube MN2 (CJ8810) and the drain of N-channel MOS tube MN3 (CJ8810) respectively, the gate of N-channel MOS tube N1 (HM4354) and the gate of N-channel MOS tube N2 (HM4354) are connected to the gate of P-channel MOS tube P2 and the gate of P-channel MOS tube P3 respectively, the drain of N-channel MOS tube N1 and the drain of N-channel MOS tube N2 are connected to the drain of P-channel MOS tube P2 and the drain of P-channel MOS tube P3 respectively; the negative electrode of the constant current output of the power supply module 21 is connected to the source of N-channel MOS tube MN1, the source of N-channel MOS tube MN2, the source of N-channel MOS tube MN3, the source of N-channel MOS tube N1 and the source of N-channel MOS tube N2. The gate of N-channel MOS tube MN1, the gate of N-channel MOS tube MN2 and the gate of N-channel MOS tube MN3 are connected to the control output end of the single-chip microcomputer module 22. The drain of P-channel MOS tube P1 is connected to the anode conductive column 117 outside the bottom of the shell 12 of the electrolytic tank 1; the drain of P-channel MOS tube P2 and the drain of N-channel MOS tube N1 are connected to the cathode I conductive column 118 outside the bottom of the shell 12 of the electrolytic tank 1; the drain of P-channel MOS tube P3 and the drain of N-channel MOS tube N2 are connected to the cathode II conductive column 119 outside the bottom of the shell 12 of the electrolytic tank 1.

[0032] The power supply control method of the ozone water generator device is as follows: in a cycle, the anode group 111 is supplied with high level; in a cycle, the cathode group I 112 is supplied with low level for TA seconds, then supplied with high level for TB seconds, and then supplied with low level again; in a cycle, the cathode group II 113 is supplied with low level for "2TA+TB" seconds, then supplied with high level for TB seconds, and then supplied with low level again to enter the next cycle.

[0033] The time of one cycle is "2TA+2TB", TB is less than "(4 / 5)*(TA+TB)" and greater than "(1 / 15)*(TA+TB)", preferably "TA+TB"=30 seconds and TB=5 seconds. Figure 7 The working process waveform diagram of each electrode group.

[0034] The method comprises the following steps:

[0035] 1) Install the electrolytic water tank 1 and the flow switch 3 on the water supply pipeline, connect the water source and the power supply, and when on standby, the control output end of the single-chip microcomputer module 22 provides low level signals for the gate of the N-channel MOS tube MN1, the gate of the N-channel MOS tube MN2, and the gate of the N-channel MOS tube MN3, the N-channel MOS tube MN1, the N-channel MOS tube MN2, and the N-channel MOS tube MN3 are cut off, the P-channel MOS tube P1, the P-channel MOS tube P2, and the P-channel MOS tube P3 are cut off, the N-channel MOS tube N1 and the N-channel MOS tube N2 are turned on, the cathode group I 112 and the cathode group II 113 are connected with the constant current output end V- of the power supply module 21, the anode group 111 is disconnected with the constant current output end V+ of the power supply module 21, the electrolytic assembly is not supplied with power, and the ozone water generator device is in the stop working state.

[0036] 2) when using water, the flow switch 3 is closed, the signal input end of the single-chip microcomputer module 22 obtains the closing signal of the flow switch, the control output end provides a high-level signal for the gate of the N-channel MOS tube MN1, and provides a low-level signal for the gate of the N-channel MOS tube MN2 and the gate of the N-channel MOS tube MN3, the N-channel MOS tube MN1 is turned on, the N-channel MOS tube MN2 and the N-channel MOS tube MN3 are turned off, the P-channel MOS tube P1 is turned on, the P-channel MOS tube P2 and the P-channel MOS tube P3 are turned off, the N-channel MOS tube N1 and the N-channel MOS tube N2 are turned on, the anode group 111 is in communication with the constant-current output end V+ of the power supply module 21, the cathode group I 112 and the cathode group II 113 are in communication with the constant-current output end V- of the power supply module 21, the ozone water generating device forms an electrolysis power supply circuit through the anode group 111 and the cathode group I 112 and the cathode group II 113, and starts to electrolyze water to generate ozone water; after a time TA (preferably 25 seconds), the control output end of the single-chip microcomputer module 22 provides a high-level signal for the gate of the N-channel MOS tube MN2, the P-channel MOS tube P2 is turned on, the N-channel MOS tube N1 is turned off, the cathode group I is in communication with the constant-current output end V+ of the power supply module 21, the ozone water generating device forms an electrolysis power supply circuit through the anode group 111 and the cathode group II 113, starts to electrolyze water to generate ozone water, and the cathode group I 112 forms another power supply circuit with the cathode group II 113, and the water scale formed on the cathode group I 112 falls off under the action of an electric field. After a time TB (preferably 5 seconds), the control output end of the single-chip microcomputer module 22 provides a low-level signal for the gate of the N-channel MOS tube MN2, the P-channel MOS tube P2 is turned off, the N-channel MOS tube N1 is turned on, the cathode group I is in communication with the constant-current output end V- of the power supply module 21, an electrolysis power supply circuit is formed through the anode group and the cathode group I and the cathode group II, and water continues to be electrolyzed to generate ozone water; after another time TA (preferably 25 seconds), the control output end of the single-chip microcomputer module 22 provides a high-level signal for the gate of the N-channel MOS tube MN3, the N-channel MOS tube N2 is turned off, the P-channel MOS tube P3 is turned on, the cathode group II 113 and the anode group 111 are in communication with the constant-current output end V+ of the power supply module 21, the cathode group I 112 is in communication with the constant-current output end V- of the power supply module 21, the ozone water generating device forms an electrolysis power supply circuit through the anode group 111 and the cathode group I 112, and water continues to be electrolyzed to generate ozone water; meanwhile, the cathode group II 113 forms another power supply circuit with the cathode group I 112, and the water scale formed on the cathode group II falls off under the action of an electric field.After the time TB (preferably 5 seconds), the control output of the single-chip module 22 for the gate of the N-channel MOS transistor MN3 becomes low, the P-channel MOS transistor P3 is cut off, the N-channel MOS transistor N2 is turned on, the cathode group II 113 is connected with the constant current output V- of the power module 21, the ozone water generating device forms an electrolysis power supply circuit through the anode group 111 and the cathode group I 112 and the cathode group II 113, and continues to electrolyze water to generate ozone water; the next cycle is entered, and the above-mentioned actions are repeated. Figure 7 The working process waveforms of each electrode group are shown in the figure, wherein V0 is equal to the voltage between V+ and V-, and V1 is equal to the voltage between VCC and V-.

[0037] 3) Stop using water, and the flow switch 3 is disconnected; the signal input of the single-chip module 22 obtains the flow switch disconnection signal, the control output thereof provides low level signals for the gates of the N-channel MOS transistors MN1, MN2 and MN3, the N-channel MOS transistors MN1, MN2 and MN3 are cut off, the P-channel MOS transistors P1, P2 and P3 are cut off, the N-channel MOS transistors N1 and N2 are turned on, the cathode group I 112 and the cathode group II 113 are connected with the constant current output V- of the power module 21, the anode group 111 is disconnected with the constant current output V+ of the power module 21, the electrolysis assembly is not powered, and the ozone water generating device enters a standby state.

[0038] It should be understood that the parts not described in detail in the specification are all prior art. The above examples only describe the preferred embodiments of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements of the technical solutions of the present application made by the ordinary engineering technicians in the field shall fall within the protection scope determined by the claims of the present application.

Claims

1. A power supply control method for an ozone water generating apparatus, characterized by In a cycle period, the anode group is supplied with high level during the working process of the ozone water generating device; in the same cycle period, the cathode group I is supplied with low level for TA seconds, then supplied with high level, and supplied with low level again after TB seconds; in the same cycle period, the cathode group II is supplied with low level for "2TA+TB" seconds, then supplied with high level, and supplied with low level again after TB seconds to enter the next cycle, and the time of a cycle period is "2TA+2TB", TB is greater than "(1 / 15)*(TA+TB)" and less than "(4 / 5)*(TA+TB)".

2. The power supply control method of an ozone water generating apparatus according to claim 1, characterized in that TA+TB=30 seconds, and TB=5 seconds.

3. The power supply control method of an ozone water generating apparatus according to claim 1, characterized in that The ozone water generating device comprises electrolytic water tanks, a power supply control circuit and a flow switch which are connected with each other. The top cover of the electrolytic water tank is sealingly connected to the upper portion of the shell of the electrolytic water tank, and the top cover is provided with a water inlet and a water outlet. The electrolytic water tank is provided with an electrolytic electrode plate assembly in the shell. The electrolytic electrode plate assembly comprises an anode group composed of a plurality of anode plates, a cathode group I composed of a plurality of cathode plates I, and a cathode group II composed of a plurality of cathode plates II. The cathode plates I of the cathode group I are punched titanium plates or punched stainless steel plates, the cathode plates II of the cathode group II are titanium plates or stainless steel plates, and the anode plates of the anode group are doped tin dioxide titanium anode plates. Each of the anode plates of the anode group is connected with an anode conductive sheet, each of the cathode plates I of the cathode group I is connected with a cathode I conductive sheet, each of the cathode plates II of the cathode group II is connected with a cathode II conductive sheet, the lower end of the anode conductive sheet is provided with an anode conductive column, the lower end of the cathode I conductive sheet is provided with a cathode I conductive column, and the lower end of the cathode II conductive sheet is provided with a cathode II conductive column. The cathode II conductive column penetrates through the shell of the electrolytic water tank and is connected with the power supply control circuit. The bottom electrode plate isolation strip and the top electrode plate isolation strip are respectively arranged on the inner bottom of the shell and the inner top of the top cover. Each of the cathode plates I, each of the cathode plates II and each of the anode plates are inserted into the top electrode plate isolation groove and the bottom electrode plate isolation groove formed between the top electrode plate isolation strip and the bottom electrode plate isolation strip.

4. The power supply control method of an ozone water generating apparatus according to claim 3, characterized in that The electrolytic electrode plate assembly comprises an anode group composed of n anode plates, a cathode group I composed of 2n cathode plates I, and a cathode group II composed of n+1 cathode plates II, wherein n is a natural number greater than or equal to 1. The cathode plates I and the anode plates are sequentially and spacedly arranged, and the cathode plates II are arranged outside the outermost cathode plates I.

5. The power supply control method of an ozone water generating apparatus according to claim 3, characterized in that The electrolytic electrode plate assembly comprises an anode group composed of n anode plates, a cathode group I composed of 2n cathode plates I, and a cathode group II composed of n+1 cathode plates II, wherein n is a natural number greater than or equal to 1. The cathode plates I, the cathode plates II and the anode plates are sequentially and spacedly arranged.

6. The power supply control method of an ozone water generating apparatus according to claim 3, characterized in that The power supply control circuit comprises a single-chip microcomputer module, a power supply module and an electrolytic plate control circuit which are connected with each other; the flow switch is connected to the signal input end of the single-chip microcomputer module; the power input end of the power supply module is connected to the mains; the power supply module has two output lines; one output line outputs 5V stabilized voltage to the single-chip microcomputer module to supply power to the single-chip microcomputer module; the other output line provides constant current output to supply power to the electrolytic plate control circuit; the positive electrode of the constant current output of the power supply module is connected to one end of resistors R1, R2 and R3 and the source electrodes of P-channel MOS tubes P1, P2 and P3; the other ends of the resistors R1, R2 and R3 are respectively connected to the gate electrodes of the P-channel MOS tubes P1, P2 and P3; the gate electrodes of the P-channel MOS tubes P1, P2 and P3 are respectively connected to the drain electrodes of N-channel MOS tubes MN1, MN2 and MN3; the gate electrodes of the N-channel MOS tubes N1 and N2 are respectively connected to the gate electrodes of the P-channel MOS tubes P2 and P3; the drain electrodes of the N-channel MOS tubes N1 and N2 are respectively connected to the drain electrodes of the P-channel MOS tubes P2 and P3; the negative electrode of the constant current output of the power supply module is connected to the source electrodes of the N-channel MOS tubes MN1, MN2, MN3, N1 and N2; the gate electrodes of the N-channel MOS tubes MN1, MN2 and MN3 are connected to the control output end of the single-chip microcomputer module; the drain electrode of the P-channel MOS tube P1 is connected to the anode conductive column outside the bottom of the shell of the electrolytic water tank; the drain electrodes of the P-channel MOS tube P2 and the N-channel MOS tube N1 are connected to the cathode I conductive column outside the bottom of the shell of the electrolytic water tank; the drain electrodes of the P-channel MOS tube P3 and the N-channel MOS tube N2 are connected to the cathode II conductive column outside the bottom of the shell of the electrolytic water tank.

7. The power supply control method of an ozone water generating apparatus according to claim 6, characterized in that It comprises the following steps: 1) install the electrolytic water tank and the flow switch on the water supply pipeline, connect the water source and the power supply, when on standby, the control output end of the single-chip microcomputer module provides low-level signals to the gate electrodes of the N-channel MOS tubes MN1, MN2 and MN3, the N-channel MOS tubes MN1, MN2 and MN3 are cut off, the P-channel MOS tubes P1, P2 and P3 are cut off, the N-channel MOS tubes N1 and N2 are turned on, the cathode group I and the cathode group II are in communication with the constant current output end V- of the power supply module, the anode group is disconnected with the constant current output end V+ of the power supply module, the electrolytic assembly is not powered, and the ozone water generating device is in the stop working state; 2) when using water, the flow switch is closed, the signal input end of the single-chip module group obtains the flow switch closing signal, the control output end provides a high level signal for the gate of N-channel MOS tube MN1, provides a low level signal for the gate of N-channel MOS tube MN2 and the gate of N-channel MOS tube MN3, N-channel MOS tube MN1 is turned on, N-channel MOS tube MN2 and N-channel MOS tube MN3 are cut off, P-channel MOS tube P1 is turned on, P-channel MOS tube P2 and P-channel MOS tube P3 are cut off, N-channel MOS tube N1 and N-channel MOS tube N2 are turned on, the anode group is in communication with the constant current output end V+ of the power supply module, the cathode group I and the cathode group II are in communication with the constant current output end V- of the power supply module, the ozone water generating device forms an electrolysis power supply loop through the anode group and the cathode group I and the cathode group II, and starts to electrolyze water to generate ozone water; after time TA, the control output end of the single-chip module group provides a high level signal for the gate of N-channel MOS tube MN2, P-channel MOS tube P2 is turned on, N-channel MOS tube N1 is cut off, the cathode group I is in communication with the constant current output end V+ of the power supply module, the ozone water generating device forms an electrolysis power supply loop through the anode group and the cathode group II, starts to electrolyze water to generate ozone water, and meanwhile the cathode group I forms another power supply loop with the cathode group II, and the water scale formed on the cathode group I falls off under the action of the electric field; after time TB, the control output end of the single-chip module group provides a low level signal for the gate of N-channel MOS tube MN2, P-channel MOS tube P2 is cut off, N-channel MOS tube N1 is turned on, the cathode group I is in communication with the constant current output end V- of the power supply module, an electrolysis power supply loop is formed through the anode group and the cathode group I and the cathode group II, and water continues to be electrolyzed to generate ozone water; after time TA, the control output end of the single-chip module group provides a high level signal for the gate of N-channel MOS tube MN3, N-channel MOS tube N2 is cut off, P-channel MOS tube P3 is turned on, the cathode group II and the anode group are in communication with the constant current output end V+ of the power supply module, the cathode group I is in communication with the constant current output end V- of the power supply module, the ozone water generating device forms an electrolysis power supply loop through the anode group and the cathode group I, and water continues to be electrolyzed to generate ozone water; meanwhile, the cathode group II forms another power supply loop with the cathode group I, and the water scale formed on the cathode group II falls off under the action of the electric field; after time TB, the control output end of the single-chip module group provides a low level signal for the gate of N-channel MOS tube MN3, P-channel MOS tube P3 is cut off, N-channel MOS tube N2 is turned on, the cathode group II is in communication with the constant current output end V- of the power supply module, the ozone water generating device forms an electrolysis power supply loop through the anode group and the cathode group I and the cathode group II, and water continues to be electrolyzed to generate ozone water; the next cycle is entered, and the foregoing actions are repeated. 3) stop using water, flow switch off, single-chip microcomputer module signal input end get flow switch off signal, its control output end for N channel MOS tube MN1, N channel MOS tube MN2, N channel MOS tube MN3 gate provide low level signal, N channel MOS tube MN1, N channel MOS tube MN2, N channel MOS tube MN3 cut off, P channel MOS tube P1, P channel MOS tube P2, P channel MOS tube P3 cut off, N channel MOS tube N1, N channel MOS tube N2 conduction, cathode group I, cathode group II and power module constant current output end V- communication, anode group and power module constant current output end V+ disconnect, electrolytic assembly no power, ozone water generating device into standby state.

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