Dental water jet throttling method, throttling system and method of use thereof

Abstract

The application provides a waterpik throttling method, a throttling system and a use method thereof, comprising the following steps: obtaining a pulse flow change graph of the waterpik in the running time flow change; determining a flow demarcation value, in a single pulse cycle, dividing the area defined by the flow curve and the time axis in the pulse flow change graph into a high-flow sprayable area and a low-flow backflow area; judging whether the current flow value of the waterpik is greater than the flow demarcation value in real time, if yes, the liquid in the liquid pump device of the waterpik is sprayed from the nozzle of the waterpik; if not, the liquid in the liquid pump device of the waterpik before and / or after the flow peak value appears is backflowed to the liquid storage tank of the waterpik. The application can recycle part of the oral cleaning liquid before and after the flow peak value, the cleaning endurance time is long, the spraying time of the pulse jet is shorter, the intermittent time of the pulse jet is longer, and the rhythm of the oral impact is stronger.

Description

Technical Field

[0001] This invention relates to the field of oral hygiene technology, and in particular to a water flossing device throttling method, throttling system and its usage. Background Technology

[0002] As living standards improve, people are becoming more aware of oral care, and the market offers a wider variety of oral cleaning tools. Among them, water flossers, as an alternative to traditional dental floss, have become an essential household appliance. Their basic working principle involves using a pump to draw water from a tank and then spraying it through a nozzle at a rate of hundreds or even thousands of high-pressure pulses per minute to clean food debris and plaque from between teeth, as well as massage the gums, thus improving the oral environment.

[0003] Currently available pulse-type oral irrigators rely on pulses and water pressure as the key mechanisms for their cleaning effect. To achieve a cleaning effect, the pulse intensity of the water flow needs to be maintained for a longer period.

[0004] Figure 1 The diagram shows the pulse flow rate variation of the plunger pump in a traditional oral irrigator over time. The flow rate curves resemble separate "mound structures," with the shaded area corresponding to each "mound structure" representing the total flow rate ejected within one cycle. Within each pulse cycle, the flow rate before and after the peak flow rate (instantaneous flow rate can be simply referred to as flow) is low, resulting in a lower jet velocity, less impact on the user's oral cavity, weaker oral cleaning ability, and thus lower water utilization. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a water flosser throttling method, throttling system and its usage method, which can recycle and reuse part of the oral cleaning fluid before and after the flow peak, has a long cleaning endurance, a shorter pulse jet spray time, a longer pulse jet interruption time, and a stronger rhythmic impact on the oral cavity.

[0006] To solve the above-mentioned technical problems, the present invention provides a method for throttling a dental flosser, comprising the following steps:

[0007] Obtain the pulse flow rate variation relationship of the water flosser during operation over time;

[0008] Determine the flow rate boundary value. Within a single pulse cycle, divide the change of pulse flow rate over time into a high flow rate stage and a low flow rate stage. Within a single pulse cycle, the maximum value of pulse flow rate is located in the high flow rate stage.

[0009] Determine if the current flow rate of the oral irrigator is greater than the flow rate threshold. If so, determine that the current operating state of the oral irrigator is oral rinsing state, so that the liquid in the pump device of the oral irrigator is ejected from the nozzle of the oral irrigator. If not, determine that the current operating state of the oral irrigator is return flow throttling state, so that the liquid in the pump device of the oral irrigator before and / or after the flow rate peak occurs is returned to the liquid storage tank of the oral irrigator.

[0010] Preferably, the step of determining whether the current flow rate of the oral irrigator is greater than the flow rate threshold, and if so, determining that the current operating state of the oral irrigator is oral rinsing state, so as to eject the liquid in the pump device of the oral irrigator from the nozzle of the oral irrigator; if not, determining that the current operating state of the oral irrigator is return flow throttling state, so as to return the liquid in the pump device of the oral irrigator located before and / or after the flow rate peak to the liquid storage tank of the oral irrigator includes: recording the pump chamber pressure of the pump device when the current flow rate is the flow rate threshold as the return pressure value, determining whether the current pump pressure value of the pump device is greater than the return pressure value, and if so, closing the flow channel valve structure between the pump device and the liquid storage tank; if not, opening the flow channel valve structure between the pump device and the liquid storage tank.

[0011] Preferably, the step of determining whether the current flow rate of the oral irrigator is greater than the flow rate threshold, and if so, determining that the current operating state of the oral irrigator is the oral rinsing state, so as to eject the liquid in the pump device of the oral irrigator from the nozzle of the oral irrigator; if not, determining that the current operating state of the oral irrigator is the return flow throttling state, so as to return the liquid in the pump device of the oral irrigator that is located before and / or after the flow rate peak to the liquid storage tank of the oral irrigator includes: recording the positions of the eccentric wheel of the pump device when the current flow rate is the flow rate threshold as P1 and P2, the rotation stage of the eccentric wheel from P1 to P2 is the high flow stage, and the rotation stage of the eccentric wheel from P2 to P1 is the low flow stage, determining whether the current rotation position of the eccentric wheel is located in the rotation stage from P1 to P2, and if so, closing the flow channel valve structure between the pump device and the liquid storage tank; if not, opening the flow channel valve structure between the pump device and the liquid storage tank.

[0012] The present invention also provides a throttling system for implementing the throttling method of the oral irrigator, comprising:

[0013] A liquid pump device, comprising a liquid pump chamber and a piston, wherein the piston is reciprocally disposed within the pump chamber of the liquid pump chamber;

[0014] The liquid inlet channel is connected to the liquid storage tank at its inlet end, and to the pump chamber at its outlet end via a one-way valve.

[0015] The nozzle is connected to the pump chamber via a liquid outlet check valve;

[0016] The return liquid system includes a return liquid channel and a return liquid valve assembly. The inlet end of the return liquid channel is connected to the pump chamber through the return liquid valve assembly, and the outlet end of the return liquid channel is connected to the liquid storage tank.

[0017] Preferably, the return valve assembly includes a pre-peak reflux valve and / or a post-peak reflux valve, wherein the pre-peak reflux valve recovers liquid before the high-flow stage occurs only when the piston is performing the discharge stroke, and the post-peak reflux valve recovers liquid after the high-flow stage ends only when the piston is performing the discharge stroke.

[0018] Preferably, the pre-peak reflux valve includes a first pre-peak valve seat formed in the pump cavity, a second pre-peak valve seat formed in the return flow channel, and a pre-peak valve core that floats and is liquid-tightly abutted between the first and second pre-peak valve seats as the hydraulic pressure in the pump cavity changes.

[0019] Preferably, the post-peak reflux valve includes a post-peak valve seat formed in the liquid pump cavity, a sliding member slidably passing through the post-peak valve seat, a post-peak valve core located in the return liquid flow channel and disposed in the sliding member, and an elastic reset member disposed between the inner wall of the return liquid flow channel and the post-peak valve core, wherein the post-peak valve core and the post-peak valve seat are in a liquid-tight abutment fit.

[0020] Preferably, the sliding member extends in a direction parallel to the reciprocating motion of the piston and extends into the pump chamber. The sliding member is pushed out of the pump chamber by the piston only when the piston is performing the discharge stroke and the current flow rate of the flushing device is not higher than the flow rate threshold value, so as to open the post-peak reflux valve.

[0021] Preferably, the throttling system further includes an inlet / outlet adapter located outside the pump chamber, and the inlet / outlet adapter is equipped with the inlet check valve, the outlet check valve, and the return valve assembly.

[0022] Preferably, the throttling system further includes a liquid pump housing for mounting the inlet / outlet adapter, and a partial structure with a return flow channel formed between the liquid pump housing and the inlet / outlet adapter.

[0023] The present invention also provides a method of using the throttling system, comprising the following steps:

[0024] When the current flow rate of the water flosser is not greater than the flow rate threshold and before the flow peak occurs, the pre-peak reflux valve is open and the post-peak reflux valve is closed. The liquid flows back to the liquid storage tank through the pre-peak reflux valve and the return flow channel in sequence.

[0025] When the current flow rate of the water flosser is greater than the flow rate threshold, both the pre-peak reflux valve and the post-peak reflux valve are closed.

[0026] When the current flow rate of the water flosser is not greater than the flow rate threshold and after the flow peak occurs, the pre-peak reflux valve is closed and the post-peak reflux valve is open. The liquid flows back to the liquid storage tank through the post-peak reflux valve and the return flow channel in sequence.

[0027] As described above, the water-throttling method, water-throttling system, and method of use of the water flosser of the present invention have the following beneficial effects:

[0028] First, flow rate data of the oral irrigator during operation can be collected through experimental testing to obtain a pulse flow rate variation graph showing the flow rate changing over time. In this graph, the horizontal axis represents time (T), and the vertical axis represents flow rate (Q). Next, based on the required flushing force of the jet when rinsing the user's mouth, flow rate thresholds can be defined. Within a single pulse cycle, the area defined by the flow rate curve and the time axis in the pulse flow rate variation graph can be divided into a high-flow-rate sprayable region and a low-flow-rate backflow region. The peak data points in the pulse flow rate variation graph belong to the high-flow-rate sprayable region. max It is the peak flow rate, Q 分界值 This refers to the flow rate threshold. Based on this threshold, the region defined by the flow rate curve and time axis is divided into three regions: X, Y, and Z. Region X is the low-flow recirculation region before the flow rate peak, where the flow rate is relatively low, and the total flow rate in this region can be recirculated. Region Y is the high-flow sprayable region, where the flow rate is relatively high, and the total flow rate in this region is used for oral cleaning. Region Z is the low-flow recirculation region after the flow rate peak, where the flow rate is also relatively low, and the total flow rate in this region can be recirculated. Finally, when the user uses the water flosser, it is determined whether the current flow rate of the water flosser is greater than the flow rate threshold. If so, the current operating state of the water flosser is determined to be oral rinsing mode, so that the liquid in the water flosser's pump device is ejected from the nozzle of the water flosser. If not, the current operating state of the water flosser is determined to be return flow throttling mode, so that the liquid in the water flosser's pump device before and / or after the flow rate peak is returned to the water flosser's liquid storage tank. In other words, the oral cleaning fluid before the peak flow rate occurs can be recycled and conserved separately, the oral cleaning fluid after the peak flow rate occurs separately, or the oral cleaning fluid before and after the peak flow rate occurs can be recycled and conserved simultaneously. Therefore, compared with the cleaning methods of existing oral irrigators, the water-saving method of this invention can recover and reuse a portion of the oral cleaning fluid before and after the flow rate peak, resulting in a longer cleaning duration, shorter pulse jet spray time, longer pulse jet interval, and a stronger rhythmic impact on the oral cavity. Attached Figure Description

[0029] Figure 1 The graph shows the pulse flow rate variation of the plunger pump in a conventional oral irrigator in the prior art.

[0030] Figure 2 The diagram shows the pulse flow rate variation corresponding to the throttling method of the water flosser of the present invention.

[0031] Figure 3 Shown is a front view of the throttling system of the present invention;

[0032] Figure 4 Displayed as along Figure 3 A sectional view of line A-A in the middle;

[0033] Figure 5 Displayed as Figure 4 Enlarged view of section C;

[0034] Figure 6 Displayed as along Figure 4 A sectional view along line B-B in the middle;

[0035] Figure 7 Displayed as Figure 6 Enlarged view of section D.

[0036] Component designation explanation

[0037] 1. Liquid pump unit

[0038] 11. Liquid pump chamber

[0039] 111 Pump Chamber

[0040] 12 Pistons

[0041] 13 Transmission Mechanism

[0042] 14 Drive mechanism

[0043] 15 In / Output Adapters

[0044] 16. Pump housing

[0045] 2. Liquid inlet channel

[0046] 3. Inlet check valve

[0047] 4 nozzles

[0048] 5. Discharge check valve

[0049] 6. Liquid return system

[0050] 61 Return flow channel

[0051] 62 Peak-front reflux valve

[0052] 621 First Peak Front Valve Seat

[0053] 622 Second Peak Front Valve Seat

[0054] 623 Peak Pre-Valve Core

[0055] 63 Peak Post-Recirculation Valve

[0056] 631 Peak Post-Valve Seat

[0057] 632 Slider

[0058] 633 Peak Post-Valve Core

[0059] 634 Elastic Reset Component

[0060] 635 Peak Post-Flow Hole

[0061] 635a Large diameter hole

[0062] 635b Small Diameter Hole Section

[0063] 635c post-peak connecting groove Detailed Implementation

[0064] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0065] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0066] like Figure 2 and Figure 3 As shown, the present invention provides a method for throttling a dental flosser, comprising the following steps:

[0067] Obtain the pulse flow rate variation relationship of the water flosser during operation over time;

[0068] Determine the flow rate boundary value. Within a single pulse cycle, divide the change of pulse flow rate over time into a high flow rate stage and a low flow rate stage. Within a single pulse cycle, the maximum value of pulse flow rate is located in the high flow rate stage.

[0069] If the current flow rate of the water flosser is greater than the flow rate threshold, the water flosser is determined to be in oral rinsing mode, so that the liquid in the water pump device 1 of the water flosser is ejected from the nozzle 4 of the water flosser; otherwise, the water flosser is determined to be in return flow throttling mode, so that the liquid in the water pump device 1 of the water flosser before and / or after the flow rate peak occurs is returned to the liquid storage tank (not shown).

[0070] In this invention, firstly, flow data of the oral irrigator during operation can be collected through experimental testing to obtain the pulse flow rate variation relationship between the flow rate and time. Generally, this pulse flow rate variation relationship is expressed as a pulse flow rate variation graph; in the graph, the horizontal axis represents time T, and the vertical axis represents flow rate Q. Next, based on the required flushing force of the jet when rinsing the user's mouth, a flow rate threshold can be determined. Within a single pulse cycle, the area defined by the flow rate curve and the time axis in the pulse flow rate variation graph is divided into a high-flow-rate sprayable region and a low-flow-rate backflow region. The peak data points in the pulse flow rate variation graph belong to the high-flow-rate sprayable region; see details below. Figure 2 Q max It is the peak flow rate, Q 分界值 This refers to the flow rate boundary value. Based on this value, the region defined by the flow rate curve and the time axis is divided into three areas: X (grid-line filled), Y (diagonal-line filled), and Z (grid-line filled). The X area is the low-flow recirculation region before the flow rate peak (i.e., the low-flow stage), where the flow rate is relatively low, and the total flow rate can be recirculated. The Y area is the high-flow sprayable region (i.e., the high-flow stage), where the flow rate is relatively high, and the total flow rate is used for oral cleaning. The Z area is the low-flow recirculation region after the flow rate peak (i.e., the low-flow stage), where the flow rate is also relatively low, and the total flow rate can be recirculated. Finally, when the user uses the water flosser, the system continuously checks whether the current flow rate exceeds the flow threshold. If so, the system determines the current operating state of the water flosser to be oral rinsing mode, and ejects the liquid from the pump unit 1 through the nozzle 4. If not, the system determines the current operating state to be liquid return and throttling mode, and returns the liquid from the pump unit 1 before and / or after the flow peak to the liquid storage tank. In other words, the system can separately return and conserve the oral cleaning solution (e.g., purified water) before the peak flow occurs, separately return and conserve the oral cleaning solution after the peak flow occurs, or simultaneously return and conserve the oral cleaning solution before and after the peak flow occurs.

[0071] Therefore, compared with the existing oral irrigator cleaning methods, the oral irrigator throttling method of the present invention can recover and reuse part of the oral cleaning fluid before and after the flow peak, resulting in a longer cleaning duration, a shorter pulse jet spray time, a longer pulse jet interval, and a stronger rhythmic impact on the oral cavity.

[0072] As a more easily implemented specific implementation of the above-mentioned water flosser throttling method: the step of determining in real time whether the current flow rate of the water flosser is greater than the flow threshold value, and if so, determining that the current operating state of the water flosser is oral rinsing state, so as to eject the liquid in the water flosser's pump device 1 from the nozzle 4 of the water flosser; if not, determining that the current operating state of the water flosser is return throttling state, so as to return the liquid in the water flosser's pump device 1 and located before and / or after the flow peak value to the water flosser's liquid storage tank includes: recording the pump chamber pressure of the pump device 1 when the current flow rate is the flow threshold value as the return pressure value, determining whether the current pump pressure value of the pump device 1 is greater than the return pressure value, and if so, closing the flow channel valve structure between the pump device 1 and the liquid storage tank; if not, opening the flow channel valve structure between the pump device and the liquid storage tank. Specifically, the flow channel valve structure can switch on and off states under the control of the water flosser's control system, and the flow channel valve structure can also switch on and off states according to its own pressure resistance.

[0073] As another, more easily implemented, specific implementation of the above-mentioned water flosser throttling method: the step of determining whether the current flow rate of the water flosser is greater than the flow rate threshold value, and if so, determining that the current operating state of the water flosser is the oral rinsing state, so as to eject the liquid in the water pump device 1 of the water flosser from the nozzle 4 of the water flosser; if not, determining that the current operating state of the water flosser is the return throttling state, so as to return the liquid in the water pump device 1 of the water flosser that is located before and / or after the flow rate peak value to the liquid storage tank of the water flosser includes: recording the positions of the eccentric wheel of the water pump device 1 when the current flow rate is the flow rate threshold value as P1 and P2, the rotation stage of the eccentric wheel from P1 to P2 is the high flow stage, and the rotation stage of the eccentric wheel from P2 to P1 is the low flow stage, determining whether the current rotation position of the eccentric wheel is located in the rotation stage from P1 to P2, and if so, closing the flow channel valve structure between the water pump device 1 and the liquid storage tank; if not, opening the flow channel valve structure between the water pump device and the liquid storage tank. Specifically, the angle corresponding to the rotation stage of the eccentric wheel from P1 to P2 is less than 180 degrees, and the angle corresponding to the rotation stage of the eccentric wheel from P2 to P1 is greater than 180 degrees. The sum of the angles corresponding to the two rotation stages is 360 degrees. Compared with the method of determining the pump pressure value, the method of determining the position of the eccentric wheel is more accurate.

[0074] like Figure 3 , Figure 4 as well as Figure 5As shown, the present invention also provides a throttling system for implementing the above-described throttling method for a dental flosser, comprising:

[0075] The liquid pump device 1 includes a liquid pump chamber 11 and a piston 12, with the piston 12 reciprocatingly disposed in the pump chamber 111 of the liquid pump chamber 11.

[0076] Liquid inlet channel 2, the liquid inlet end of liquid inlet channel 2 is connected to liquid storage tank, and the liquid outlet end of liquid inlet channel 2 is connected to pump chamber 111 through liquid inlet check valve 3;

[0077] Nozzle 4 is connected to pump chamber 111 via liquid outlet check valve 5;

[0078] The return system 6 includes a return flow channel 61 and a return valve assembly. The inlet end of the return flow channel 61 is connected to the pump chamber 111 through the return valve assembly, and the outlet end of the return flow channel 61 is connected to the liquid storage tank.

[0079] In the throttling system of the present invention, when the piston 12 is pulled back to perform the suction stroke, the discharge check valve 5 is closed and the inlet check valve 3 is opened, and the oral cleaning fluid flows into the pump chamber 111 in sequence through the inlet flow channel 2 and the inlet check valve 3.

[0080] When piston 12 pushes out to perform the discharge stroke, discharge check valve 5 opens and inlet check valve 3 closes, and oral cleaning fluid is sprayed out sequentially through discharge check valve 5 and nozzle 4.

[0081] The above-mentioned return liquid system 6 has three operating modes:

[0082] The first method involves opening the return valve assembly when the piston 12 begins its discharge stroke, and closing it before the high flow stage occurs as the piston 12 moves outward, until the piston 12's discharge stroke ends.

[0083] The second method is that when the piston 12 begins its discharge stroke, the return valve assembly is closed. As the piston 12 moves outward, the return valve assembly opens after the high flow stage ends, and continues until the piston 12's discharge stroke ends.

[0084] The third method involves opening the return valve assembly when the piston 12 begins its discharge stroke, closing it before the high flow rate phase occurs as the piston 12 continues its push-out motion, and then reopening the return valve assembly after the high flow rate phase ends, until the piston 12's discharge stroke ends.

[0085] The aforementioned liquid pump device 1 further includes a transmission mechanism 13 and a drive mechanism 14. The piston 12 is connected to the drive mechanism 14 via the transmission mechanism 13. The piston 12 reciprocates under the drive of the drive mechanism 14.

[0086] The aforementioned liquid pump device 1 can be a plunger pump; the aforementioned transmission mechanism 13 and drive mechanism 14 are both existing mechanisms. The transmission mechanism 13 can be an eccentric wheel assembly, and the drive mechanism 14 can be a motor assembly, which will not be described in detail here.

[0087] The inlet check valve 3 and outlet check valve 5 mentioned above can be ball valves (with return springs) or valve plates.

[0088] The aforementioned return valve assembly can have one or two valves. For example, the return valve assembly includes a pre-peak return valve 62 and / or a post-peak return valve 63. The pre-peak return valve 62 recovers liquid before the high-flow stage occurs only during the piston 12's discharge stroke, while the post-peak return valve 63 recovers liquid after the high-flow stage ends only during the piston 12's discharge stroke. In practical use, when the piston 12's discharge stroke begins, the pre-peak return valve 62 opens. As the piston 12 extends, before the high-flow stage occurs, the pre-peak return valve 62 closes. Then, as the piston 12 continues its extension movement, after the high-flow stage ends, the post-peak return valve 63 opens until the piston 12's discharge stroke ends.

[0089] To enable the aforementioned pre-peak reflux valve 62 to automatically switch on and off, the pre-peak reflux valve 62 includes a first pre-peak valve seat 621 formed in the pump chamber 11, a second pre-peak valve seat 622 formed in the return flow channel 61, and a pre-peak valve core 623 that floats and is fluidly abutted between the first pre-peak valve seat 621 and the second pre-peak valve seat 622 as the hydraulic pressure in the pump chamber 111 changes. Specifically, a portion of the pump chamber 11 is configured as a first pre-peak valve seat 621 with a first pre-peak flow hole, and the port of the return flow channel 61 is configured as a second pre-peak valve seat 622 with a second pre-peak flow hole. The pre-peak valve core 623 is used to block the first pre-peak flow hole of the first pre-peak valve seat 621 or to block the second pre-peak flow hole of the second pre-peak valve seat 622.

[0090] When the pump chamber 11 draws in liquid, the pre-peak valve core 623 falls on the first pre-peak valve seat 621, increasing the pump chamber 11's liquid-drawing capacity. When the pump chamber 11 discharges liquid, at the beginning of the discharge, the pre-peak valve core 623 does not fall on either the second pre-peak valve seat 622 or the first pre-peak valve seat 621 (i.e., the pre-peak return valve 62 is in the open state). As the internal pressure of the pump chamber 111 increases, the liquid, when flowing back to the return flow channel 61 through the pre-peak valve core 623, will drive the pre-peak valve core 623 toward the second pre-peak valve seat 622 until it completely blocks the second pre-peak flow hole of the second pre-peak valve seat 622. By controlling the distance between the first pre-peak valve seat 621 and the second pre-peak valve seat 622, the size or weight of the pre-peak valve core 623, and the gap between the pre-peak valve core 623 and the inner wall of the valve cavity, the pre-peak valve core 623 can be controlled to completely block the second pre-peak flow hole of the second pre-peak valve seat 622 before the flow peak occurs, thus achieving precise control.

[0091] If the gap between the pre-peak valve core 623 and the inner wall of the valve chamber is very small, the volume generated by the pre-peak valve core 623 due to its own movement (the cross-section of the pre-peak valve core 623 multiplied by the moving distance of the pre-peak valve core 623) is approximately equal to the volume of liquid reduced before the flow peak occurs.

[0092] Specifically, the flow hole of the first peak-front valve seat 621 is opened at the top of the pump chamber 11, and the valve cavity of the peak-front return valve 62 is formed at the flow point between the pump chamber 11 and the return flow channel 61; the peak-front valve core 623 can be spherical.

[0093] To achieve the switching function of the post-peak reflux valve 63, the post-peak reflux valve 63 includes a post-peak valve seat 631 formed in the pump cavity 11, a sliding member 632 slidably passing through the post-peak valve seat 631, a post-peak valve core 633 located in the return flow channel 61 and disposed in the sliding member 632, and an elastic reset member 634 (e.g., a compression spring) disposed between the inner wall of the return flow channel 61 and the post-peak valve core 633. The post-peak valve core 633 and the post-peak valve seat 631 are in a liquid-tight abutment fit. The post-peak valve seat 631 has a post-peak flow hole 635.

[0094] The post-peak valve core 633 is pressed against the post-peak valve seat 631 by the elastic force of the elastic reset member 634, thereby switching the post-peak reflux valve 63 to the closed state; when the elastic force of the elastic reset member 634 is overcome after the flow peak occurs, the post-peak valve core 633 can move away from the post-peak valve seat 631, thereby switching the post-peak reflux valve 63 to the open state.

[0095] To simplify the switching method of the post-peak reflux valve 63, the sliding member 632 extends in a direction parallel to the reciprocating motion direction of the piston 12 and extends into the pump chamber 111. The sliding member 632 is pushed out of the pump chamber 111 by the piston 12 only when the piston 12 is performing a discharge stroke and the current flow value of the flushing device is not higher than the flow threshold value, so as to open the post-peak reflux valve 63.

[0096] Specifically, the normal internal pressure of the pump chamber 111 is insufficient to move the post-peak valve core 633 away from the post-peak valve seat 631. If the nozzle 4 is blocked, the internal pressure of the pump chamber 111 increases and reaches the preset pressure, and the internal pressure of the pump chamber 111 is released through the existing release valve of the water flosser.

[0097] When liquid is discharged from the pump chamber 11, after the flow peak occurs, the piston 12 reaches a preset position. The piston 12 then pushes the sliding member 632 out of the pump chamber 11. Since the post-peak valve core 633 moves synchronously with the sliding member 632, it moves away from the post-peak valve seat 631, thus achieving the function of forcibly releasing pressure after the flow peak occurs. Consequently, some liquid flows back to the liquid storage tank through the return flow channel 61, thereby reducing the amount of liquid after the flow peak. Furthermore, the sliding member 632 has a motion guiding function, ensuring the movement accuracy of the post-peak valve core 633 after the flow peak occurs, enhancing sealing and stability. In some specific embodiments, the sliding member 632 is pin-shaped. The sliding member 632 slides through the post-peak flow hole 635 of the post-peak valve seat 631. Further, as... Figure 5 , Figure 6 as well as Figure 7 As shown, the post-peak flow hole 635 of the post-peak valve seat 631 is in the shape of a two-stage stepped hole. The post-peak flow hole 635 includes a large-diameter hole portion 635a and a small-diameter hole portion 635b that are interconnected. A post-peak connecting groove 635c is provided on the hole wall of the small-diameter hole portion 635b. The large-diameter hole portion 635a is blocked by the aforementioned post-peak valve core 633. The small-diameter hole portion 635b is slidably engaged with the sliding member 632. The post-peak connecting groove 635c is used to connect the large-diameter hole portion 635a and the pump chamber 111.

[0098] To improve the structural integration of the above-mentioned throttling system, the above-mentioned throttling system also includes an inlet / outlet adapter 15 located outside the liquid pump chamber 11. The inlet / outlet adapter 15 is equipped with the above-mentioned inlet check valve 3, outlet check valve 5 and return valve assembly.

[0099] To facilitate the connection between the aforementioned return flow channel 61 and the pump chamber 11, the aforementioned throttling system also includes a pump housing 16 for mounting the inlet / outlet adapter 15, and a portion of the structure between the pump housing 16 and the inlet / outlet adapter 15 is formed with the return flow channel 61.

[0100] The present invention also provides a method of using the above-mentioned throttling system, comprising the following steps:

[0101] When the current flow rate of the water flosser is not greater than the flow rate threshold and before the flow rate peak occurs, the pre-peak return valve 62 is in the open state and the post-peak return valve 63 is in the closed state. The liquid flows back to the liquid storage tank through the pre-peak return valve 62 and the return flow channel 61 in sequence.

[0102] When the current flow rate of the water flosser is greater than the flow rate threshold, both the pre-peak reflux valve 62 and the post-peak reflux valve 63 are closed.

[0103] When the current flow rate of the water flosser is not greater than the flow rate threshold and after the flow rate peak occurs, the pre-peak reflux valve 62 is closed and the post-peak reflux valve 63 is open. The liquid flows back to the liquid storage tank through the post-peak reflux valve 63 and the return flow channel 61 in sequence.

[0104] The method of use of the present invention can recycle and reuse part of the oral cleaning fluid before and after the flow peak, with a long cleaning duration, a shorter pulse jet spray time, a longer pulse jet interval, and a stronger rhythmic impact on the oral cavity.

[0105] In summary, this invention can recover and reuse a portion of the oral cleaning fluid before and after the peak flow rate, resulting in a longer cleaning duration, shorter pulse jet spray time, longer pulse jet intervals, and a stronger rhythmic impact on the oral cavity. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial application value.

[0106] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A method of throttling a waterpik, the method comprising: The method comprises the following steps: obtaining a pulse flow change relationship of the oral irrigator in a running time flow change; determining a flow demarcation value, and dividing the change of the pulse flow over time in a single pulse cycle into a high flow stage and a low flow stage, and the maximum value of the pulse flow in the single pulse cycle is located in the high flow stage; determining whether the current flow value of the oral irrigator is greater than the flow demarcation value, if yes, determining that the current running state of the oral irrigator is a mouth washing state, and the liquid in the liquid pump device (1) of the oral irrigator is ejected from the nozzle (4) of the oral irrigator; if no, determining that the current running state of the oral irrigator is a liquid return throttling state, and the liquid in the liquid pump device (1) of the oral irrigator before and / or after the occurrence of the flow peak value is returned to the liquid storage tank of the oral irrigator.

2. The oral irrigator throttling method of claim 1, wherein: The step of determining whether the current flow value of the oral irrigator is greater than the flow demarcation value, if yes, determining that the current running state of the oral irrigator is a mouth washing state, and the liquid in the liquid pump device (1) of the oral irrigator is ejected from the nozzle (4) of the oral irrigator; if no, determining that the current running state of the oral irrigator is a liquid return throttling state, and the liquid in the liquid pump device (1) of the oral irrigator before and / or after the occurrence of the flow peak value is returned to the liquid storage tank of the oral irrigator, comprises: recording the pump cavity pressure of the liquid pump device (1) when the current flow value is the flow demarcation value as a return pressure value, determining whether the current pump pressure value of the liquid pump device (1) is greater than the return pressure value, if yes, closing the flow channel valve structure between the liquid pump device (1) and the liquid storage tank; if no, opening the flow channel valve structure between the liquid pump device and the liquid storage tank.

3. The oral irrigator throttling method of claim 1, wherein: The step of determining whether the current flow value of the oral irrigator is greater than the flow demarcation value, if yes, determining that the current running state of the oral irrigator is a mouth washing state, and the liquid in the liquid pump device (1) of the oral irrigator is ejected from the nozzle (4) of the oral irrigator; if no, determining that the current running state of the oral irrigator is a liquid return throttling state, and the liquid in the liquid pump device (1) of the oral irrigator before and / or after the occurrence of the flow peak value is returned to the liquid storage tank of the oral irrigator, comprises: recording the eccentric wheel position of the liquid pump device (1) when the current flow value is the flow demarcation value as P1 and P2, the rotation stage of the eccentric wheel from P1 to P2 is a high flow stage, and the rotation stage of the eccentric wheel from P2 to P1 is a low flow stage, determining whether the current rotation position of the eccentric wheel is located in the rotation stage from P1 to P2, if yes, closing the flow channel valve structure between the liquid pump device (1) and the liquid storage tank; if no, opening the flow channel valve structure between the liquid pump device and the liquid storage tank.

4. A flow restriction system implementing the flow restriction method of any one of claims 1 to 3, characterized in that, It comprises: a liquid pump device (1), the liquid pump device (1) comprising a liquid pump cavity (11) and a piston (12), the piston (12) being reciprocatingly arranged in a pump cavity (111) of the liquid pump cavity (11); a liquid inlet flow channel (2), a liquid inlet end of the liquid inlet flow channel (2) being communicated with a liquid storage tank, and a liquid outlet end of the liquid inlet flow channel (2) being communicated with the pump cavity (111) through a liquid inlet one-way valve (3); a nozzle (4), the nozzle (4) being communicated with the pump cavity (111) through a liquid outlet one-way valve (5); The liquid return system (6) comprises a liquid return channel (61) and a liquid return valve assembly, the liquid inlet end of the liquid return channel (61) is communicated with the pump cavity (111) through the liquid return valve assembly, and the liquid outlet end of the liquid return channel (61) is communicated with the liquid storage tank.

5. The throttling system of claim 4, wherein: The liquid return valve assembly comprises a pre-peak return valve (62) and / or a post-peak return valve (63), the pre-peak return valve (62) recovers liquid appearing before the high flow stage only when the piston (12) does the liquid discharge stroke, and the post-peak return valve (63) recovers liquid after the end of the high flow stage only when the piston (12) does the liquid discharge stroke.

6. The throttling system of claim 5, wherein: The pre-peak return valve (62) comprises a first pre-peak valve seat (621) formed in the liquid pump cavity (11), a second pre-peak valve seat (622) formed in the liquid return channel (61), and a pre-peak valve core (623) floatingly and liquid-tightly abutting between the first pre-peak valve seat (621) and the second pre-peak valve seat (622) with the hydraulic change of the pump cavity (111).

7. The throttling system of claim 5, wherein: The post-peak return valve (63) comprises a post-peak valve seat (631) formed in the liquid pump cavity (11), a sliding member (632) slidingly penetrating the post-peak valve seat (631), a post-peak valve core (633) located in the liquid return channel (61) and arranged on the sliding member (632), and an elastic reset member (634) arranged between the inner wall of the liquid return channel (61) and the post-peak valve core (633), the post-peak valve core (633) and the post-peak valve seat (631) are liquid-tightly abuttingly matched.

8. The throttling system of claim 7, wherein: The sliding member (632) extends in a direction parallel to the reciprocating direction of the piston (12) and extends into the pump cavity (111), the sliding member (632) is only pushed out of the pump cavity (111) by the piston (12) to open the post-peak return valve (63) when the piston (12) does the liquid discharge stroke and the current flow value of the oral irrigator is not higher than the flow boundary value.

9. The throttling system of claim 4, wherein: The throttling system further comprises an access adapter (15) arranged outside the liquid pump cavity (11), the access adapter (15) is provided with the liquid inlet one-way valve (3), the liquid outlet one-way valve (5), and the liquid return valve assembly.

10. The throttling system of claim 9, wherein: The throttling system further comprises a liquid pump shell (16) for mounting the access adapter (15), and part of the structure of the liquid return channel (61) is formed between the liquid pump shell (16) and the access adapter (15).

11. A method of using a restriction system as claimed in any one of claims 5 to 10, characterised in that, The method comprises the following steps: When the current flow value of the oral irrigator is not greater than the flow boundary value and before the flow peak value appears, the pre-peak return valve (62) is in an open state, the post-peak return valve (63) is in a closed state, and the liquid returns to the liquid storage tank through the pre-peak return valve (62) and the liquid return channel (61) in sequence; When the current flow value of the oral irrigator is greater than the flow boundary value, the pre-peak return valve (62) and the post-peak return valve (63) are both in a closed state; When the current flow value of the oral irrigator is not greater than the flow boundary value and after the flow peak value appears, the pre-peak return valve (62) is in a closed state, the post-peak return valve (63) is in an open state, and the liquid returns to the liquid storage tank through the post-peak return valve (63) and the liquid return channel (61) in sequence.

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