A pulse nozzle and a cleaning water path

CN224793737UActive Publication Date: 2026-09-25XIAMEN R&T PLUMBING TECH
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Patent Information

Application Number
CN202521895541.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-03
Publication Date
2026-09-25
Estimated Expiration
2035-09-03

AI Technical Summary

Technical Problem

然而,这种技术手段存在诸多问题,一方面,连续直流模式在大流量工况下冲击力集中,易在皮肤敏感区域产生刺痛感,导致用户不适;另一方面,为降低刺痛感而减小孔径或加设节流件后,流量随之下降,清洗力不足,且长时间冲洗仍难以兼顾清洁与舒适

Benefits of technology

[0025]1.通过主水腔的水能够产生文丘里效应并配合储水腔及进气通道,使储水腔内的水被间歇吸入主水腔,形成脉冲水柱,有效解决了连续水流在大流量时刺痛、小流量时清洗力不足的问题,提升了清洗舒适性与效率;

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of bathrooms, and provides a pulse nozzle, which comprises a body, a main water channel, a secondary water channel, a water storage cavity and a water outlet channel are arranged in the body, a main water cavity is formed between the main water channel and the water outlet channel, the main water cavity and the secondary water channel form the water storage cavity, an air inlet channel communicated with the water storage cavity is further arranged in the body, when water is discharged, water in the main water cavity forms a Venturi effect, when the water level of the water storage cavity reaches a preset height, the water in the water storage cavity is sucked into the main water cavity, and then is sprayed along the water outlet channel; when the water level of the water storage cavity does not reach the preset height, the main water cavity stops sucking the water in the water storage cavity. Based on the above, the water flow can be made to have intermittent flow changes, has a massage feeling, can balance cleaning force and comfort, and improves the cleaning experience. In addition, a cleaning water channel is further provided.
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Description

Technical Field

[0001] This invention relates to the field of bathroom technology, specifically to a pulse nozzle and a cleaning water path. Background Technology

[0002] In some scenarios, a single main water channel is installed inside the nozzle, supplemented by a throttling ring, filter, or perforated plate to maintain a constant or slightly turbulent water flow before spraying it out from the outlet channel. However, this technique has several problems. On the one hand, the impact force is concentrated under high flow conditions in continuous direct current mode, which can easily cause stinging sensations in sensitive skin areas, leading to user discomfort. On the other hand, reducing the orifice diameter or adding throttling devices to reduce stinging sensations results in a decrease in flow rate, insufficient cleaning power, and prolonged rinsing still struggles to balance cleanliness and comfort.

[0003] Therefore, this application studies a pulse nozzle that causes intermittent flow rate changes in water, providing a massage-like sensation while balancing cleaning power and comfort, thus improving the cleaning experience. Utility Model Content

[0004] To create intermittent flow variations in the water, providing a massage-like sensation, and balancing cleaning power with comfort, the cleaning experience is enhanced.

[0005] On the one hand, the pulse nozzle provided in this application adopts the following technical solution:

[0006] A pulse nozzle includes a body, which contains a main water channel, a secondary water channel, a water storage chamber, and a water outlet channel. The main water channel and the water outlet channel form a main water chamber, and the main water chamber and the secondary water channel form the water storage chamber. The body also contains an air inlet channel communicating with the water storage chamber. When water is discharged, the water in the main water chamber undergoes a Venturi effect. When the water level in the water storage chamber reaches a preset height, the water is drawn into the main water chamber and then sprayed out along the water outlet channel. If the water level in the water storage chamber does not reach the preset height, the main water chamber stops drawing water from the water storage chamber.

[0007] By adopting the above technical solution, the water in the main water chamber can generate a Venturi effect, which, together with the water storage chamber and air intake channel, allows the water in the water storage chamber to be intermittently drawn into the main water chamber, forming a pulsed water column. This effectively solves the problems of stinging when the continuous water flow is at a high flow rate and insufficient cleaning power when the flow rate is low, thus improving cleaning comfort and efficiency.

[0008] Optionally, the water flow ratio between the main waterway and the secondary waterway is 5:1 to 20:1.

[0009] By adopting the above technical solution, it is possible to ensure that the main water channel has sufficient kinetic energy to generate negative pressure, while avoiding excessive flow in the secondary water channel that could disrupt the intermittent effect. This results in a stable output of massage-style pulsed water flow, further relieving the stinging sensation and enhancing the cleaning power.

[0010] Optionally, the main waterway includes a constant diameter section or a gradually changing section, the minimum diameter of which is 0.6mm to 1.4mm, and the secondary waterway includes an inlet end, the diameter of which is 0.3mm to 0.8mm.

[0011] By adopting the above technical solution, both negative pressure intensity and flow control are taken into account, so that the pulse frequency and impact force are within the human comfort zone, thus solving the problem that traditional nozzles cannot simultaneously meet the requirements of high flow power and low flow gentleness due to their single orifice diameter.

[0012] Optionally, the secondary waterway is provided with a flow-limiting structure, which is a baffle, core, or rib, and cooperates with the wall of the secondary waterway to form a flow-limiting gap.

[0013] By adopting the above technical solution, the flow rate of the secondary waterway can be accurately limited in a simple and reliable manner, and the flow ratio can be controlled to ensure the pulse effect.

[0014] Optionally, a step is provided between the water storage chamber and the main water chamber. The step is connected to the side near the main water channel, and the height of the step is less than the height of the main water chamber. The step can prevent the water in the water storage chamber from directly communicating with the water in the main water chamber. When water is sprayed out from the main water channel, a Venturi effect can be generated. At the same time, the water in the auxiliary water channel enters the water storage chamber and gathers at the step until the water level in the water storage chamber reaches a preset height. Then, it is forced into the water flow of the main water chamber by negative pressure, which makes the sprayed water flow increase instantaneously. After that, the water level in the water storage chamber drops, and the main water chamber stops sucking water from the water storage chamber, so that the water adsorbed by the main water chamber is in an intermittent state.

[0015] By adopting the above technical solution, the step between the water storage chamber and the main water chamber prevents the water in the water storage chamber from directly communicating with the water in the main water chamber, enhances the intermittent effect of the water mass, makes the fluctuating size of the pulsed water column more obvious, significantly enhances the massage experience and avoids continuous high-pressure stinging.

[0016] Optionally, the air intake channel is an air hole opened on the side wall and / or top wall of the main body. When the water in the main water chamber forms a Venturi effect and the water level in the water storage chamber reaches a preset height, outside air enters through the air hole, presses the water in the water storage chamber into the main water chamber, and sprays out together with the water in the main water chamber.

[0017] By adopting the above technical solution, the vent holes on the side wall and / or top wall can generate a Venturi effect when water is sprayed out from the main water channel, so as to replenish air in time, maintain the pressure balance in the water storage chamber, prevent pulse failure caused by insufficient negative pressure, and further squeeze the water in the water storage chamber into the main water chamber.

[0018] Optionally, it also includes a water inlet channel, wherein the main water channel and the secondary water channel are connected to the same water inlet channel or different water inlet channels; the body includes a connected outer shell, a front cover, a sealing cover and a lower cover, the main water channel and the secondary water channel are opened in the front cover, and a flow passage is provided between the water inlet channel and the main water channel and the secondary water channel, and the air inlet channel is formed between the front cover and the sealing cover; the body has an opening, the sealing cover has a baffle, the sealing cover is placed on the opening, the baffle extends into the secondary water channel and cooperates with the wall of the secondary water channel to form a flow limiting gap; the sealing cover also has a guide groove, which can guide the water in the main water cavity to the water outlet channel.

[0019] On the other hand, the cleaning water system provided in this application adopts the following technical solution:

[0020] A cleaning water circuit includes a water supply circuit, a three-way connector, an air pump, and the aforementioned pulse nozzle. The water supply circuit and the air pump are respectively connected to the two inlets of the three-way connector, and the pulse nozzle is connected to the outlet of the three-way connector; or the three-way connector is a water distribution valve.

[0021] Optionally, a water pump may also be included, which is connected to the inlet or outlet of the tee joint.

[0022] Optionally, it also includes a posterior wash water path and a feminine wash water path, wherein the posterior wash water path and the pulse nozzle are configured to share a common hole.

[0023] By adopting the above technical solution, the posterior rinsing pulse effect can be achieved without increasing the number of water outlets, reducing the volume of the water spray body, and further improving the product's compactness and user comfort.

[0024] In summary, this application includes the following beneficial technical effects:

[0025] 1. The water in the main water chamber can generate a Venturi effect, which, together with the water storage chamber and air intake channel, causes the water in the water storage chamber to be intermittently drawn into the main water chamber, forming a pulse water column. This effectively solves the problem of stinging when the continuous water flow is at a high flow rate and insufficient cleaning power when the flow rate is low, thus improving cleaning comfort and efficiency.

[0026] 2. The water flow ratio between the main water channel and the auxiliary water channel is 5:1 to 20:1, which ensures that the main water channel has enough kinetic energy to generate negative pressure, while avoiding excessive flow in the auxiliary water channel that would disrupt the intermittent effect. This results in a stable output of massage-style pulse water flow, further relieving the stinging sensation and enhancing the cleaning power.

[0027] 3. By limiting the orifice diameter of the main and auxiliary water channels, both negative pressure intensity and flow control are taken into account, so that the pulse frequency and impact force are within the human comfort zone, solving the problem that traditional nozzles cannot simultaneously meet the requirements of high flow power and low flow gentleness due to the single orifice diameter.

[0028] 4. By installing a flow-limiting structure in the secondary channel, the flow rate of the secondary channel is precisely limited in a simple and reliable manner, and the flow ratio is controlled to ensure the pulse effect;

[0029] 5. By using the step between the water storage chamber and the main water chamber, the water in the water storage chamber is prevented from directly communicating with the water in the main water chamber, which enhances the intermittent effect of the water mass, makes the fluctuating size of the pulsed water column more obvious, significantly enhances the massage experience and avoids continuous high-pressure stinging.

[0030] 6. By using air holes in the side walls and / or top walls, air is replenished in time when the Venturi effect is generated when water is sprayed out from the main water channel, maintaining the pressure balance in the water storage chamber, preventing pulse failure due to insufficient negative pressure, and further squeezing the water in the water storage chamber into the main water chamber.

[0031] 7. Achieve a posterior rinsing pulse effect without increasing the number of water outlets, reduce the volume of the spray body, and further improve the product's compactness and user comfort. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0033] In the diagram:

[0034] Figure 1 This is a schematic diagram illustrating the structure of the pulse nozzle in an embodiment of this application, showing the main waterway and the auxiliary waterway.

[0035] Figure 2 This is a cross-sectional schematic diagram of the pulse nozzle according to an embodiment of this application;

[0036] Figure 3 This is a schematic diagram of the explosion of the pulse nozzle according to an embodiment of this application;

[0037] Figure 4 This is a cross-sectional schematic diagram showing the air intake channel in the pulse nozzle of an embodiment of this application;

[0038] Figure 5 This is one of the water circuit connection diagrams in the embodiments of this application;

[0039] Figure 6 This is the second diagram showing the connection relationship of the cleaning water circuit in the embodiments of this application;

[0040] Figure 7 This is the third diagram showing the connection relationship of the cleaning water circuit in the embodiments of this application;

[0041] Figure 8 This is the fourth diagram showing the connection relationship of the cleaning water circuit in the embodiments of this application;

[0042] Figure 9 This is a schematic diagram illustrating the structure of the posterior wash water path and the feminine wash water path in the washing water path of the embodiments of this application.

[0043] Reference numerals in the attached drawings: 1. Water inlet channel; 2. Water outlet channel; 3. Main water channel; 4. Secondary water channel; 5. Water storage chamber; 6. Main water chamber; 7. Outer shell; 8. Front cover; 9. Sealing cover; 10. Lower cover; 11. Air inlet channel; 12. Flow chamber; 13. Baffle; 14. Step; 15. Buttock washing water path; 16. Feminine washing water path; 17. Guide channel. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0045] This application discloses a pulse nozzle. (Refer to...) Figures 1-4 The pulse nozzle includes a body, which contains a main water channel 3, a secondary water channel 4, a water storage chamber 5, and a water outlet channel 2. The main water channel 3 and the water outlet channel 2 form a main water chamber 6, and the main water chamber 6 and the secondary water channel 4 form a water storage chamber 5. The body also contains an air intake channel 11 that communicates with the water storage chamber 5. When water is discharged, the water in the main water chamber 6 forms a Venturi effect. When the water level in the water storage chamber 5 reaches a preset height, it is drawn into the main water chamber 6 and then sprayed out along the water outlet channel 2. If the water level in the water storage chamber 5 does not reach the preset height, the main water chamber 6 stops drawing water from the water storage chamber 5. When water is ejected from the main water channel 3, the water flow velocity is relatively high, creating a low-pressure zone around the water column and a pressure difference with atmospheric pressure. Simultaneously, after the water in the secondary water channel 4 partially fills the storage chamber 5, it is forced into the water flow from the main water channel 3 into the main water chamber 6 under atmospheric pressure, causing the ejected water flow to increase instantaneously and further enhancing the cleaning force. Then, as the water flow in the storage chamber 5 is drawn away, the water level drops, and the main water chamber 6 stops drawing water from the storage chamber 5, resulting in an intermittent state of water adsorption in the main water chamber 6. The water in the main water chamber 6 generates a Venturi effect, which, in conjunction with the storage chamber 5 and the air intake channel 11, causes water in the storage chamber 5 to be intermittently drawn into the main water chamber 6, forming a pulsed water column. This effectively solves the problems of stinging sensation during continuous high-flow water and insufficient cleaning force during low-flow water, improving cleaning comfort and efficiency.

[0046] In this embodiment, a water inlet channel 1 is also included. The main waterway 3 and the secondary waterway 4 are connected to the same water inlet channel 1. In other embodiments, the main waterway 3 and the secondary waterway 4 are connected to different water inlet channels 1, so that the opening and closing of the main waterway 3 and the secondary waterway 4 can be controlled by different water inlet channels 1 respectively.

[0047] In this embodiment, the main body includes an outer shell 7, a front cover 8, a sealing cover 9, and a lower cover 10. The sealing cover 9 is inserted into one side of the front cover 8. The outer shell 7 and the front cover 8 are interlocked, and the front cover 8 and the lower cover 10 are interlocked. A main water channel 3 and a secondary water channel 4 are formed on the front cover 8. A flow passage 12 is provided between the water inlet channel 1 and both the main water channel 3 and the secondary water channel 4. An air inlet channel 11 is formed between the front cover 8 and the sealing cover 9 to maintain air pressure. Specifically, refer to... Figure 3 As shown, the main body has an opening, the cover 9 has a baffle 13, the cover 9 is placed over the opening, the baffle 13 extends into the secondary water channel 4 and cooperates with the wall of the secondary water channel 4 to form a flow-limiting gap; the cover 9 also has a guide groove 17, the guide groove 17 can guide the water of the main water chamber 6 to the water outlet channel 2.

[0048] In some embodiments, the water flow ratio between the main water channel 3 and the secondary water channel 4 is 5:1 to 20:1. This ensures that the main water channel 3 has sufficient kinetic energy to generate negative pressure, while preventing excessive flow in the secondary water channel 4 from disrupting the intermittent effect, thereby stabilizing the output of the massage-style pulsed water flow, further relieving the stinging sensation and enhancing the cleaning power.

[0049] In some embodiments, the main waterway 3 includes a constant diameter section or a gradually changing section, the minimum diameter of which is 0.6mm to 1.4mm. The secondary waterway 4 includes an inlet end with a diameter of 0.3mm to 0.8mm. By limiting the orifice diameters of the main waterway 3 and the secondary waterway 4, both negative pressure intensity and flow control are balanced, ensuring that the pulse frequency and impact force are within the human comfort range. This solves the problem that traditional nozzles, due to their single orifice diameter, cannot simultaneously meet the requirements of high-flow power and low-flow gentleness.

[0050] Reference Figure 2 and Figure 3 In some embodiments, the secondary channel 4 is equipped with a flow-limiting structure, which is a baffle 13, a core, or a rib. This structure, in conjunction with the wall of the secondary channel 4, forms a flow-limiting gap, thus accurately limiting the flow rate of the secondary channel 4 in a simple and reliable manner, controlling the flow ratio, and ensuring the pulse effect. In this embodiment, the flow-limiting structure uses a baffle 13, which is integrally connected to the cover 9. In other embodiments, the flow rate of the secondary channel 4 can also be limited by extending the secondary channel 4, thereby controlling the flow ratio.

[0051] Reference Figure 2In some embodiments, a step 14 is provided between the water storage chamber 5 and the main water chamber 6. The step 14 is connected to the side near the main water channel 3, and its height is less than that of the main water chamber 6. The step 14 prevents the water in the water storage chamber 5 from directly communicating with the water in the main water chamber 6. When water is sprayed out from the main water channel 3, a Venturi effect is generated. At the same time, the water in the secondary water channel 4 enters the water storage chamber 5 and gathers at the step 14. When the water level in the water storage chamber 5 reaches a preset height, it is forced into the water flow of the main water chamber 6 by negative pressure, which increases the sprayed water flow instantaneously. Then the water level in the water storage chamber 5 drops, and the main water chamber 6 stops drawing water from the water storage chamber 5, making the water adsorbed by the main water chamber 6 intermittent. The step 14 blocks the water between the water storage chamber 5 and the main water chamber 6, preventing the water in the water storage chamber 5 from directly communicating with the water in the main water chamber 6, enhancing the intermittent water mass effect, making the fluctuating size of the pulsed water column more obvious, significantly enhancing the massage experience and avoiding continuous high-pressure stinging.

[0052] In this embodiment, the air intake channel 11 is an air vent located on the side wall of the main body. When the water in the main water chamber 6 creates a Venturi effect and the water level in the storage chamber 5 reaches a preset height, outside air enters through the air vent, forcing the water in the storage chamber 5 into the main water chamber 6, and then ejecting it along with the water in the main water chamber 6. In other embodiments, the air intake channel 11 can also be located on the top wall of the main body. The side wall air vent replenishes air in real time when the water ejected from the main water channel can generate a Venturi effect, maintaining the pressure balance in the storage chamber, preventing pulse failure due to insufficient negative pressure, and further squeezing the water in the storage chamber 5 into the main water chamber 6.

[0053] The implementation principle of a pulse nozzle in this application embodiment is as follows: the venturi effect generated by the main water chamber 6, combined with the water storage chamber 5 and the air intake channel 11, causes the water in the water storage chamber 5 to be intermittently drawn into the main water chamber 6, forming a pulse water column, which effectively solves the problems of stinging when the continuous water flow is large and insufficient cleaning power when the flow is small, thus improving cleaning comfort and efficiency.

[0054] This application also discloses a cleaning water circuit. A cleaning water circuit includes a water supply circuit, a three-way connector, an air pump, and the aforementioned pulse nozzle. The water supply circuit and the air pump are respectively connected to the two inlets of the three-way connector, and the pulse nozzle is connected to the outlet of the three-way connector; or the three-way connector is a water distribution valve.

[0055] In some embodiments, a water pump is also included, which is connected to the inlet or outlet of the tee joint.

[0056] Reference Figure 5The cleaning water circuit includes a water supply circuit, a three-way connector, an air pump, and the aforementioned pulse nozzle. The water supply circuit includes an inlet, a pressure stabilizing valve, a flow meter, an instant heating component, and an anti-siphon device connected in sequence. The anti-siphon device and the air pump are respectively connected to the two inlets of the three-way connector. A one-way valve connects the air pump and the water distribution valve. The pulse nozzle is connected to the outlet of the three-way connector. The three-way connector is a water distribution valve.

[0057] Reference Figure 6 ,and Figure 5 The difference in the embodiment is that the water supply circuit only includes an inlet and a pressure regulating valve, the pressure regulating valve is connected to one of the inlets of the three-way connector, and also includes a water pump, which is connected to the outlet of the three-way connector.

[0058] Reference Figure 7 ,and Figure 6 The difference in the embodiment is that the water pump is connected to the inlet of the tee connector.

[0059] Reference Figure 8 ,and Figure 5 The difference in the embodiment is that it also includes a water pump connected to the outlet of the tee connector, which is a water distribution valve.

[0060] Reference Figure 9 In some embodiments, the system also includes a posterior wash water path 15 and a feminine wash water path 16, with the posterior wash water path 15 and the pulse nozzle sharing a common hole.

[0061] The above are exemplary embodiments disclosed in this invention. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this invention as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order. Furthermore, although the elements disclosed in the embodiments of this invention may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular number.

[0062] It should be understood that, as used herein, the singular form "a" is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations of one or more of the associatedly listed items. The embodiment numbers disclosed above are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0063] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples. Within the framework of the invention, technical features of the above embodiments or different embodiments can be combined, and many other variations of different aspects of the invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A pulse nozzle, characterized in that: The device includes a main body, which contains a main water channel, a secondary water channel, a water storage chamber, and a water outlet channel. The main water channel and the water outlet channel form a main water chamber, and the main water chamber and the secondary water channel form the water storage chamber. The main body also contains an air inlet channel that communicates with the water storage chamber. When water is discharged, the water in the main water chamber creates a Venturi effect. When the water level in the water storage chamber reaches a preset height, the water is drawn into the main water chamber and then sprayed out along the water outlet channel. If the water level in the water storage chamber does not reach the preset height, the main water chamber stops drawing water from the water storage chamber.

2. A pulse nozzle according to claim 1, characterized in that: The water flow ratio between the main waterway and the secondary waterway is 5:1 to 20:

1.

3. A pulse nozzle according to claim 1 or 2, characterized in that: The main waterway includes a constant diameter section or a gradually changing diameter section, the minimum diameter of which is 0.6mm to 1.4mm. The secondary waterway includes an inlet end, the diameter of which is 0.3mm to 0.8mm.

4. A pulse nozzle according to claim 1, characterized in that: The secondary waterway is equipped with a flow-limiting structure, which is a baffle, core, or rib, and cooperates with the wall of the secondary waterway to form a flow-limiting gap.

5. A pulse nozzle according to claim 1, characterized in that: A step is provided between the water storage chamber and the main water chamber. The step is connected to the side near the main water channel, and the height of the step is less than the height of the main water chamber. The step can prevent the water in the water storage chamber from directly communicating with the water in the main water chamber. When water is sprayed out from the main water channel, a Venturi effect can be generated. At the same time, the water in the auxiliary water channel enters the water storage chamber and gathers at the step. When the water level in the water storage chamber reaches a preset height, it is forced into the water flow of the main water chamber by negative pressure, which makes the sprayed water flow increase instantaneously. After that, the water level in the water storage chamber drops, and the main water chamber stops sucking water from the water storage chamber, so that the water adsorbed by the main water chamber is in an intermittent state.

6. A pulse nozzle according to claim 1, characterized in that: The air intake channel is an air hole opened on the side wall and / or top wall of the main body. When the water in the main water chamber forms a Venturi effect and the water level in the water storage chamber reaches a preset height, outside air enters through the air hole and forces the water in the water storage chamber into the main water chamber, and is sprayed out together with the water in the main water chamber.

7. A pulse nozzle according to claim 1, characterized in that: It also includes a water inlet channel, wherein the main waterway and the auxiliary waterway are connected to the same water inlet channel or different water inlet channels; The main body includes a connected outer shell, a front cover, a sealing cover, and a lower cover. The main water channel and the secondary water channel are opened on the front cover. A flow passage is provided between the water inlet channel and the main water channel and the secondary water channel. The air inlet channel is formed between the front cover and the sealing cover. The main body has an opening. The sealing cover has a baffle. The sealing cover is placed on the opening. The baffle extends into the secondary water channel and cooperates with the wall of the secondary water channel to form a flow-limiting gap. The sealing cover also has a guide groove, which can guide the water in the main water cavity to the water outlet channel.

8. A cleaning water system, characterized in that: It includes a water supply line, a three-way connector, an air pump, and a pulse nozzle as described in any one of claims 1-7, wherein the water supply line and the air pump are respectively connected to the two inlets of the three-way connector, and the pulse nozzle is connected to the outlet of the three-way connector; or the three-way connector is a water distribution valve.

9. A cleaning water system according to claim 8, characterized in that: It also includes a water pump connected to the inlet or outlet of the tee joint.

10. A cleaning water system according to claim 8, characterized in that: It also includes a posterior wash water path and a feminine wash water path, wherein the posterior wash water path and the pulse nozzle are configured with a common hole.