Self-cleaning method and system for spray rod

Abstract

The invention discloses a self-cleaning method and system for a spray rod. A self-cleaning waterway of the spray rod can be switched to output foam or cleaning water; when the spraying rod executes the self-cleaning function, the foam cleaning stage is executed firstly and then the cleaning water cleaning stage is executed, or the cleaning water cleaning stage is executed firstly and then the foam cleaning stage is executed; in the foam cleaning stage, the self-cleaning water path is controlled to output foam, meanwhile, the spraying rod is controlled to execute the self-cleaning action, and the foam sprayed out of the self-cleaning water path covers the surface of the spraying rod executing the self-cleaning action; in the cleaning water cleaning stage, the self-cleaning water path is controlled to output cleaning water, meanwhile, the spraying rod is controlled to execute the self-cleaning action, and the cleaning water sprayed out of the self-cleaning water path covers the surface of the spraying rod executing the self-cleaning action. The composite self-cleaning scheme of foam and cleaning water is introduced, meanwhile, the self-cleaning logic of the spray rod is adjusted, the cleaning process of the spray rod can be visually observed while the surface of the spray rod is deeply cleaned, and the user experience is improved.

Description

Technical Field

[0001] The invention relates to the field of kitchen and bathroom, and in particular to a self-cleaning method and system for a spray rod. Background Art

[0002] As an innovative product in the modern bathroom industry, smart toilets have gradually become an important choice for consumer upgrades with their intelligent functions such as automatic flushing, seat heating, and warm air drying. Among them, the spray rod is the core component for performing buttocks cleaning and feminine washing functions, and its hygiene is directly related to user experience and health and safety. Currently, mainstream smart toilets are generally equipped with a spray rod self-cleaning system, which uses built-in pipes to flush with clean water when the spray rod is extended / retracted to achieve basic self-cleaning functions.

[0003] The current spray boom self-cleaning system uses built-in pipes for surface flushing, and the entire cleaning process takes place in a closed environment inside the machine body. Users cannot confirm the cleaning effect through visual observation or equipment feedback. There are also self-cleaning nozzles installed outside the spray boom to spray clean water onto the spray boom, but the self-cleaning control logic is single, and users can only judge whether the cleaning process is completed by the sound of the machine running. Cleaning with only clean water is not easy to observe and the cleaning effect is limited. There is a widespread phenomenon of reducing or stopping the use of this function due to hygiene concerns. Summary of the invention

[0004] The main purpose of the present invention is to overcome the above-mentioned defects in the prior art, propose a self-cleaning method and system for a spray boom, introduce a composite self-cleaning scheme of foam and cleaning water, and adjust the self-cleaning logic of the spray boom. While deeply cleaning the surface of the spray boom, the cleaning process of the spray boom can be intuitively observed, thereby improving the user experience.

[0005] The present invention adopts the following technical solution:

[0006] A self-cleaning method for a spray bar, wherein a self-cleaning water channel of the spray bar is configured to switch between outputting foam or washing water; when the spray bar performs the self-cleaning function, the foam cleaning stage is first performed and then the washing water cleaning stage is performed; or the washing water cleaning stage is first performed and then the foam cleaning stage is performed and then the washing water cleaning stage is performed;

[0007] Foam cleaning stage: control the self-cleaning water channel to output foam, and at the same time control the spray bar to perform the self-cleaning action, and the foam sprayed by the self-cleaning water channel covers the surface of the spray bar performing the self-cleaning action;

[0008] Bubble water cleaning water cleaning stage: control the self-cleaning water channel to output cleaning water, and at the same time control the spray bar to perform the self-cleaning action. The cleaning water sprayed from the self-cleaning water channel covers the surface of the spray bar performing the self-cleaning action.

[0009] The self-cleaning action includes first controlling the spray rod to extend and continue for a set first time length, then controlling the spray rod to retract and continue for a set second time length, and repeating this process for a set number of times.

[0010] After the spray rod completes the hip wash or feminine wash program and the user leaves the seat, the self-cleaning function is automatically started; and it is set to: perform self-cleaning action at least once in the foam cleaning stage, and perform self-cleaning action at least once in the washing water cleaning stage.

[0011] When the self-cleaning function of the spray bar is actively started, it is set to: perform a preset number of self-cleaning actions during the foam cleaning stage, and perform a preset number of self-cleaning actions during the rinse water cleaning stage.

[0012] The self-cleaning water channel of the spray bar is configured to output foam or cleaning water that swings left and right, thereby covering the surface of the spray bar that performs the self-cleaning action to achieve all-round cleaning.

[0013] A self-cleaning system for a spray rod, comprising a spray rod assembly and a control valve; the spray rod assembly is provided with a spray rod and a self-cleaning nozzle; one of the water outlets of the control valve is connected to the spray rod, and the self-cleaning nozzle is located at the outer periphery of the fixed end of the spray rod and is provided with a self-cleaning water path, and the self-cleaning water path is connected to the self-cleaning water outlet end of the spray rod; it also includes a mixing device, the liquid inlet of the mixing device is connected to the other water outlet of the control valve to input clean water, and the liquid outlet of the mixing device is connected to the self-cleaning nozzle to output a mixed liquid to the self-cleaning water path of the self-cleaning nozzle to output foam; the system is used for a self-cleaning method for a spray rod.

[0014] The mixing device includes a shell and a pump body, the shell is provided with a liquid storage chamber, a mixing chamber, a liquid inlet chamber and a liquid outlet chamber; the liquid inlet chamber is provided with a liquid inlet, and the liquid outlet chamber is provided with a liquid outlet; the mixing chamber is provided with a first through hole connected to the liquid inlet chamber and the liquid outlet chamber respectively; the liquid storage chamber is used to hold the foaming liquid; the liquid inlet end of the pump body is connected to the liquid storage chamber, and the liquid outlet end is connected to the mixing chamber and can be controlled to extract the foaming liquid from the liquid storage chamber and send it to the mixing chamber to mix with clean water to obtain a mixed liquid.

[0015] The mixing chamber is also provided with a second through hole connected to the liquid outlet end of the pump body, and the second through hole is located at the bottom of the mixing chamber; the first through hole is close to the top of the mixing chamber.

[0016] The self-cleaning nozzle includes an input port, an air inlet, an acceleration hole and a jet port; the input port is located at one end of the self-cleaning water path in the length direction and is connected to the liquid outlet of the mixing device and the self-cleaning water outlet end of the spray rod; the acceleration hole is located between the input port and the air inlet, and the air inlet is located between the acceleration hole and the jet port; the jet port is close to the other end of the self-cleaning water path in the length direction and faces the spray rod.

[0017] Clean water or mixed liquid enters the self-cleaning nozzle through the input port and is accelerated through the acceleration hole, generating negative pressure around the air inlet. The accelerated clean water or mixed liquid mixes with the gas sucked in from the air inlet to generate foam or cleaning water with bubbles, which is sprayed out from the injection port toward the spray rod.

[0018] The self-cleaning water channel is divided into a first section and a second section with an angle, one end of the first section is provided with an input port, the other end is connected to one end of the second section and is provided with an acceleration hole, the end of the second section away from the first section is set to be closed, and the side of the second section facing the spray rod is provided with an air inlet and a spray port.

[0019] The spray rod assembly is also provided with a fixed seat, and the spray rod can move axially relative to the fixed seat to perform a self-cleaning action; the self-cleaning nozzle is fixedly arranged relative to the fixed seat to spray foam or cleaning water toward the spray rod surface to cover the spray rod surface performing the self-cleaning action.

[0020] The clean water or mixed liquid entering the first section is accelerated by the acceleration hole, and then flows into the second section at high speed to mix with the air to form cleaning water or foam. Part of the cleaning water or foam is directly sprayed out from the injection port, and part of the cleaning water or foam flows to the closed end and then flows back to the injection port to collide with new cleaning water or foam, so that the cleaning liquid is sprayed out from the injection port at a variety of different angles to form a left and right swinging effect, thereby covering the entire upper surface of the spray rod and cleaning it in all directions.

[0021] It can be seen from the above description of the present invention that, compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, the spray boom self-cleaning logic is set to be carried out in two stages: a foam cleaning stage and a cleaning water cleaning stage; a self-cleaning method of foam pre-cleaning combined with secondary flushing of cleaning water is adopted, so that the user can intuitively observe the spray boom cleaning process, and the double cleaning mechanism effectively guarantees the cleaning effect.

[0023] 2. In the present invention, it is configured to first execute the foam cleaning stage and then the cleaning water cleaning stage. The foam can cover the spray rod surface over a large area and penetrate into the spray rod gap, soften and decompose stubborn scale, urine stains and other dirt, and reduce the difficulty of subsequent flushing with clean water. The cleaning water of the secondary flushing takes away the residual foam and decomposed stains through physical impact force to avoid detergent residue. Alternatively, the cleaning water cleaning stage can be executed first, then the foam cleaning stage, and finally the cleaning water cleaning stage. The particles or impurities attached to the spray rod surface can be quickly removed by flushing with cleaning water, and then deep cleaning can be carried out with the foam. Finally, the residual foam and decomposed stains can be taken away by cleaning water to avoid detergent residue.

[0024] 3. In the present invention, the self-cleaning action includes first controlling the spray rod to extend and continue for a set first time length, and then controlling the spray rod to retract and continue for a set second time length, and repeating this process for a set number of times; the spray rod is configured to clean while extending and retracting, forming a dynamic cleaning trajectory, so that the foam and cleaning water can evenly cover the inner and outer walls of the spray rod and the telescopic track, thereby improving the cleaning efficiency; the self-cleaning water channel is configured to output foam or cleaning water that swings left and right, thereby covering the surface of the spray rod performing the self-cleaning action to achieve all-round cleaning.

[0025] 4. In the present invention, it can be arranged that when the spray rod starts the hip wash or the feminine wash, the self-cleaning function is automatically started after the hip wash or the feminine wash is completed and the user leaves the seat, so that the user can intuitively see the cleaning process of the spray rod, and the user acceptance is high; or the self-cleaning function of the spray rod can be actively started. During the cleaning process, the spray rod can be set to perform multiple self-cleaning actions according to needs to ensure the cleaning effect.

[0026] 5. In the present invention, a mixing device is added and connected between the control valve and the self-cleaning nozzle. The mixing device provides a mixed liquid to the self-cleaning nozzle, so that the self-cleaning nozzle can output foam in addition to cleaning water, thereby satisfying the self-cleaning method of foam pre-cleaning combined with secondary flushing of cleaning water.

[0027] 6. In the present invention, the mixing device includes a shell and a pump body. The shell is provided with a liquid storage chamber, a mixing chamber, a liquid inlet chamber and a liquid outlet chamber, and has a compact structure. The mixing chamber is provided with a first through hole connected with the liquid inlet chamber and the liquid outlet chamber. The pump body can be controlled to extract foaming liquid from the liquid storage chamber and send it to the mixing chamber to mix with clean water to obtain a mixed liquid. The mixing chamber is also provided with a second through hole connected to the pump body and located at the bottom of the mixing chamber. The first through hole is close to the top of the mixing chamber. With this arrangement, the foaming liquid enters from the bottom of the mixing chamber, and the clean water enters from near the top of the mixing chamber, and the two can be evenly mixed to form a mixed liquid.

[0028] 7. In the present invention, the self-cleaning nozzle is provided with an input port, an air inlet and an injection port, and an acceleration hole is provided near the injection port. With this self-priming structure, there is no need for an air pump to provide gas, thus saving costs; its self-cleaning water path is divided into a first end and a second section with an angle, so that the mixed liquid or clean water is fully mixed with the air to generate a large amount of foam or cleaning water which is then sprayed out, thereby improving the cleaning effect.

[0029] 8. In the present invention, the self-cleaning nozzle is divided into a first section and a second section. The acceleration hole is located at the junction of the first section and the second section. The inflowing cleaning liquid is accelerated through the acceleration hole. The air inlet is located in the second section to inhale air and mix with the cleaning liquid under the action of negative pressure, so that the cleaning liquid sprayed from the injection port can cover the surface of the spray rod to achieve cleaning. The structure is simple, and a mixed air-liquid flow that swings back and forth can be formed at the injection port, and the cleaning effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1It is a system structure diagram of the present invention;

[0031] Figure 2 is a structural diagram of a mixing device;

[0032] Figure 3 It is the bottom structure diagram of the mixing device;

[0033] Figure 4 for Figure 2 Exploded diagram of

[0034] Figure 5 This is the structure diagram of the self-cleaning nozzle;

[0035] Figure 6 This is a schematic diagram of the water flow for buttock washing or women's washing;

[0036] Figure 7 Schematic diagram of mixed liquid flow direction;

[0037] Figure 8 It is a schematic diagram of clean water flowing from the self-cleaning water outlet to the self-cleaning nozzle;

[0038] Fig. 9 This is a schematic diagram of foam covering the spray boom;

[0039] Fig.10 This is a schematic diagram of the system of the present invention installed on a toilet;

[0040] Fig.11 The system workflow of the present invention Figure 1 ;

[0041] Fig.12 The workflow of the system of the present invention is Figure 2 ;

[0042] in:

[0043] 10. Spray rod assembly; 11. Spray rod; 12. Water circuit switching unit; 13. Self-cleaning water outlet; 14. Three-way valve; 20. Control valve; 30. Mixing device; 31. Shell; 31a. Cover; 31b. Base; 32. Pump body; 33. Liquid storage chamber; 34. Mixing chamber; 34a. First through hole; 34b. Second through hole; 35. Liquid inlet chamber; 36. Liquid outlet chamber; 37. Liquid inlet; 38. Liquid outlet; 40. Self-cleaning nozzle; 41. Input port; 42. Air inlet; 43. Injection port; 44. First section; 45. Second section; 46. Self-cleaning water circuit; 47. Acceleration hole; 50. Instant heating unit; 60. Water pump.

[0044] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. DETAILED DESCRIPTION

[0045] The present invention is further described below through specific implementation modes.

[0046] The present invention provides a self-cleaning method for a spray bar, wherein the self-cleaning water channel of the spray bar is configured to switch the output of foam or cleaning water, wherein the foam is generated by mixing a foaming liquid with water and air; the cleaning water is clean water mixed with air, including ordinary clean water or bubble water with a large amount of gas. In the method of the present invention, when the spray bar performs the self-cleaning function, it is configured to first perform the foam cleaning stage and then the cleaning water cleaning stage; or it is configured to first perform the cleaning water cleaning stage and then the foam cleaning stage, and finally the cleaning water cleaning stage, and each cleaning stage is specifically as follows:

[0047] Foam cleaning stage: control the self-cleaning water channel to output foam, and at the same time control the spray bar to perform the self-cleaning action, and the foam sprayed by the self-cleaning water channel covers the surface of the spray bar performing the self-cleaning action;

[0048] Cleaning water cleaning stage: control the self-cleaning water channel to output cleaning water, and at the same time control the spray bar to perform the self-cleaning action, and the cleaning water sprayed from the self-cleaning water channel covers the surface of the spray bar performing the self-cleaning action.

[0049] The method of the present invention adopts a self-cleaning method of foam pre-cleaning combined with secondary flushing with cleaning water. Foam cleaning can visually observe the spray rod cleaning process, and the double cleaning mechanism effectively guarantees the cleaning effect. Among them, when foam cleaning is first used and then cleaning with cleaning water, the foam can cover the spray rod surface over a large area and penetrate into the spray rod gap, softening and decomposing stubborn scale, urine stains and other dirt, reducing the difficulty of subsequent clean water flushing; the cleaning water of the secondary flushing takes away the residual foam and decomposed stains through physical impact force, avoiding detergent residue. Alternatively, perform cleaning with cleaning water first, and then perform foam cleaning, quickly remove particles or impurities attached to the spray rod surface by flushing with cleaning water, and then perform deep cleaning with foam, which can also achieve a better cleaning effect.

[0050] Furthermore, the self-cleaning action includes first controlling the spray boom to extend and last for a set first time length, and then controlling the spray boom to retract and last for a set second time length, that is, including one spray boom extension and one spray boom retraction, and repeating this process for a set number of times, and the number of cycles can be one or more times. The spray boom extension can be fully extended or partially extended, and the spray boom retraction can be fully retracted or partially retracted, which is specifically set according to actual needs. The first time length and the second time length can be the same or different. Taking the first time length and the second time length as an example, they are set to 2-3s. In the two cleaning stages, the spray boom is set to clean while extending and retracting, forming a dynamic cleaning trajectory, so that the foam and cleaning water can evenly cover the inner and outer walls of the spray boom and the telescopic track, thereby improving the cleaning efficiency.

[0051] In the present invention, the self-cleaning function of the spray bar can be automatically activated after the hip wash or feminine wash function is used. That is, when the spray bar activates the hip wash or feminine wash, after the hip wash or feminine wash is completed and the user leaves the seat, the self-cleaning function is automatically activated to perform the above-mentioned foam cleaning stage and washing water cleaning stage. And it is set that: in the foam cleaning stage, at least one self-cleaning action is performed, and in the washing water cleaning stage, at least one self-cleaning action is performed.

[0052] In addition, when the spray rod performs the hip washing or feminine washing function, the spray rod also performs self-cleaning. The self-cleaning can adopt a conventional self-cleaning method, such as only cleaning with washing water and the spray rod does not move.

[0053] In the present invention, the self-cleaning function of the spray bar can also be actively started, that is, actively started during the use of the toilet, or actively started when cleaning the toilet, etc. When the self-cleaning function of the spray bar is actively started, it is set to: perform a preset number of self-cleaning actions in the foam cleaning stage, and perform a preset number of self-cleaning actions in the washing water cleaning stage. In each tilting stage, the number of self-cleaning actions can be two, three, four or more times, which can be set according to the cleaning requirements and is not limited here.

[0054] Furthermore, the self-cleaning water channel of the spray bar can also be configured to output foam or cleaning water that swings left and right, thereby covering the upper surface of the spray bar that performs the self-cleaning action to achieve all-round cleaning. The self-cleaning water channel can be designed to spray foam or cleaning water that can swing left and right; or, the self-cleaning nozzle can be driven by a motor to move left and right to achieve the output of foam or cleaning water that swings left and right.

[0055] Based on this, see Figures 1 to 10 The present invention also proposes a self-cleaning system for a spray bar, including a spray bar assembly 10, a control valve 20, a mixing device 30, etc. The spray bar assembly 10 is provided with a spray bar 11, a self-cleaning nozzle 40 and a waterway switching unit 12. The spray bar 11 can be driven to extend or retract. The spray bar 11 is provided with a self-cleaning water outlet 13 and a plurality of cleaning waterways. Different cleaning waterways are switched by the waterway switching unit 12 to realize different cleaning functions, or the self-cleaning water outlet 13 is switched. The self-cleaning nozzle 40 is arranged on the periphery of the fixed end of the spray bar 11 and is provided with a self-cleaning waterway 46. The self-cleaning waterway 46 is connected to the self-cleaning water outlet 13. When the waterway switching unit 12 controls the spray bar 11 to connect the self-cleaning water outlet 13 to discharge water, the self-cleaning waterway of the self-cleaning nozzle 40 sprays cleaning water toward the fixed end of the spray bar 11, and the cleaning water can flow along the surface of the spray bar 11 to realize self-cleaning. The water inlet of the control valve 20 can be connected to the instant heating module 50 or other water supply modules via the water pump 60. One of the water outlets of the control valve 20 is connected to the spray rod 11 for controlling the opening of the washing function, including buttocks washing or women washing.

[0056] The mixing device 30 of the present invention is a mixing device 30 that can output a mixed liquid. The mixing device 30 is provided with a liquid inlet 37 and a liquid outlet 38, wherein the liquid inlet 37 is connected to another water outlet of the control valve 20, and the clean water outputted from the water outlet of the control valve 20 can enter the mixing device 30 through the liquid inlet 37, and the liquid outlet 38 of the mixing device 30 is connected to the self-cleaning nozzle 40 to output the mixed liquid to the self-cleaning waterway 46, so that the self-cleaning waterway 46 outputs foam.

[0057] Specifically, the mixing device 30 includes a housing 31 and a pump body 32. The housing 31 is provided with a liquid storage chamber 33, a mixing chamber 34, a liquid inlet chamber 35 and a liquid outlet chamber 36; the liquid inlet chamber 35 is provided with a liquid inlet 37, and the liquid outlet chamber 36 is provided with a liquid outlet 38, and the clean water from the control valve 20 enters the liquid inlet chamber 35 through the liquid inlet 37. The mixing chamber 34 is provided with a first through hole 34a connected to the liquid inlet chamber 35 and the liquid outlet chamber 36, that is, the clean water in the liquid inlet chamber 35 enters the mixing chamber 34 through the corresponding first through hole 34a; the liquid storage chamber 33 is used to contain the foaming liquid. The liquid inlet end of the pump body 32 is connected to the liquid storage chamber 33, and the liquid outlet end is connected to the mixing chamber 34. The pump body 32 can be controlled to extract foaming liquid from the liquid storage chamber 33 and send it to the mixing chamber 34 to mix with clean water to obtain a mixed liquid. The mixed liquid enters the liquid outlet chamber 36 through the corresponding first through hole 34a, and then reaches the self-cleaning nozzle 40 through the liquid outlet 38.

[0058] In the present invention, the volume of the liquid storage chamber 33 is set to be larger than the volume of the mixing chamber 34, so as to contain more foaming liquid. The volumes of the liquid inlet chamber 35 and the liquid outlet chamber 36 are respectively smaller than the volume of the mixing chamber 34. Figure 4 The mixing chamber 34, the liquid inlet chamber 35 and the liquid outlet chamber 36 are located on one side of the liquid storage chamber 33, and the sum of the volumes of the three is less than half of the volume of the liquid storage chamber 33, but is not limited thereto, and can be adjusted according to actual conditions. The mixing chamber 34 is also provided with a second through hole 34b connected to the liquid outlet end of the pump body 32, the second through hole 34b is located at the bottom of the mixing chamber 34, and the first through hole 34a is close to the top of the mixing chamber 34. With this arrangement, the foaming liquid enters from the bottom of the mixing chamber 34, and the clean water enters from the mixing chamber 34 near the top, and the two can be evenly mixed to form a mixed liquid.

[0059] Furthermore, the housing 31 adopts an integrally formed structure or a split structure. Figure 4 In the embodiment, the split structure is taken as an example, which includes a cover body 31a and a base body 31b, the top of the base body 31b is open, the cover body 31a is detachably fixed to the top of the base body 31b to close the opening, the base body 31b is provided with the above-mentioned liquid storage chamber 33, mixing chamber 34, liquid inlet chamber 35 and liquid outlet chamber 36, etc., and the cover body 31a is provided with a liquid inlet 37 and a liquid outlet 38. The cover body 31a can also be provided with a liquid filling port or an openable and closable flip cover at the outlet of the liquid storage chamber 33 to inject the foaming liquid.

[0060] See also Figure 5The self-cleaning nozzle 40 of the present invention comprises an input port 41, an air inlet 42, an acceleration hole 47 and an injection port 43. The input port 41 is located at one end of the self-cleaning water path 46 in the length direction and is connected to the liquid outlet 38 of the mixing device 30 and the self-cleaning water outlet end 13 of the spray rod 11 through the three-way valve 14. The acceleration hole 47 is located between the input port 41 and the air inlet 42; the air inlet 42 is located between the acceleration hole 47 and the injection port 43 for realizing self-suction. The injection port 43 is close to the other end of the self-cleaning water path 46 in the length direction and faces the spray rod 11. When the mixing device 30 is controlled to output a mixed liquid, the mixed liquid enters through the input port 41, is accelerated by the acceleration hole 47, and the rapidly flowing mixed liquid generates a negative pressure near the air inlet 42, so that the air inlet 42 inhales air, and the mixed liquid mixes with the air inhaled by the air inlet 42 to form foam, which is ejected through the injection port 43; when the self-cleaning water outlet 13 of the spray rod 11 is controlled to output clean water, the clean water enters through the input port 41, is accelerated by the acceleration hole 47, and the rapidly flowing clean water generates a negative pressure near the air inlet 42, so that the air inlet 42 inhales air, and the clean water mixes with the air inhaled by the air inlet 42 to form cleaning water with bubbles, which is ejected through the injection port 43.

[0061] Specifically, the self-cleaning water path 46 is divided into a first section 44 and a second section 45 with an angle. An input port 41 is provided at one end of the first section 44, and an acceleration hole 47 is provided at the other end connected to one end of the second section 45. The clean water or mixed liquid in the first section 44 is accelerated by the acceleration hole 47, and the high-speed flowing clean water or mixed liquid generates negative pressure suction near the air inlet 42. The end of the second section 45 away from the first section 44 is set to be closed, and the side of the second section 45 facing the spray bar 11 is provided with an air inlet 42 and a spray port 43, so that the mixed liquid or clean water is fully mixed with the air to generate a large amount of foam or cleaning water and then sprayed out.

[0062] The second section 45 of the present invention is configured to have only one liquid outlet 12, and the injection port 43 is located on the central axis of the spray bar 20. The acceleration hole 47 is configured at one end of the second section 45 in the length direction, the other end of the second section 45 in the length direction is closed, and the injection port 43 is configured to be close to the closed end of the second section 45. With this configuration, the clean water or mixed liquid entering the first section 45 is accelerated by the acceleration hole 47, flows into the second section 45 at a high speed and mixes with the air to form cleaning water or foam, part of the cleaning water or foam is directly ejected from the injection port 43, and part of the cleaning water or foam flows to the closed end and then flows back to the injection port 43 to collide with the new cleaning water or foam, so that the cleaning liquid is ejected from the injection port 43 at a variety of different angles to form a left-right swinging effect, thereby covering the entire upper surface of the spray bar 11, cleaning it in all directions, and improving the cleaning effect.

[0063] The spray bar assembly 10 of the present invention is implemented by a conventional retractable spray bar device, which is also provided with other necessary components, such as a base and a retractable drive unit, etc. The spray bar 11 is retractable relative to the base, the drive unit is used to drive the spray bar to retract, and the self-cleaning nozzle 40 is fixed relative to the base. The mixing device 30 and the self-cleaning nozzle 40 can also be implemented by other common structures, not limited thereto.

[0064] In actual applications, the self-cleaning nozzle 40 can also be configured to move left and right relative to the base. The self-cleaning nozzle 40 is driven to move along the axial direction of the vertical rod body 11 through the cooperation of a motor and a gear rack, so that the cleaning water or foam sprayed from the injection port 43 swings left and right.

[0065] The system of the present invention is applied to a toilet, see Fig.10 , taking the washing water cleaning stage and then the foam cleaning stage as an example, its working principle is as follows:

[0066] See also Fig.10 , Fig.11 When the user starts a cleaning function (such as hip washing or feminine washing function), the control valve 20 is controlled to connect the spray rod 11, and the spray rod 11 is extended to perform the cleaning function. After the cleaning is completed, the user leaves the seat. The self-cleaning function of the spray rod 11 is automatically started, and the foam cleaning stage is entered: the control valve 20 is controlled to be connected to the mixing device 30, and clean water enters the mixing device 30 to output the mixed liquid to the self-cleaning nozzle 40, and the self-cleaning nozzle 40 sprays foam, and at the same time, the spray rod 11 is controlled to perform a self-cleaning action, including the spray rod 11 extending and lasting for a first time (for example, 2-3 seconds), and then the spray rod 11 is retracted and lasts for a second time (for example, 2-3 seconds); enter the cleaning water cleaning stage: the control valve 20 is controlled to be connected to the spray rod 11, and at the same time, the water channel switching unit 12 is controlled to be connected to the self-cleaning water outlet, and clean water enters the spray rod 11 and flows to the self-cleaning nozzle 40 through the self-cleaning water outlet, and the self-cleaning nozzle 40 sprays cleaning water, and at the same time, the spray rod 11 is controlled to perform a self-cleaning action, including the spray rod 11 extending and lasting for a first time (for example, 2-3 seconds), and then the spray rod 11 is retracted and lasts for a second time (for example, 2-3 seconds), and this is repeated according to the set number of times to complete the self-cleaning action; the self-cleaning of the spray rod 11 is completed.

[0067] See also Fig.12When the user actively starts the self-cleaning function of the spray rod 11, the foam cleaning stage begins: the control valve 20 is controlled to connect the mixing device 30, and clean water enters the mixing device 30 to output the mixed liquid to the self-cleaning nozzle 40, and the self-cleaning nozzle 40 sprays foam. At the same time, the spray rod 11 is controlled to perform a self-cleaning action, including extending the spray rod 11 for a first time (for example, 2-3 seconds), and then retracting the spray rod 11 for a second time (for example, 2-3 seconds), and performing the self-cleaning action multiple times; enter the cleaning water cleaning stage Section: Control the control valve 20 to connect the spray rod 11, and at the same time control the water channel switching unit 12 to connect the self-cleaning water outlet. Clean water enters the spray rod 11 and flows to the self-cleaning nozzle 40 through the self-cleaning water outlet. The self-cleaning nozzle 40 sprays cleaning water with foam. At the same time, the spray rod 11 is controlled to perform a self-cleaning action, including extending the spray rod 11 for a first time (for example, 2-3 seconds), and then retracting the spray rod 11 for a second time (for example, 2-3 seconds), and performing the self-cleaning action for multiple cycles; the self-cleaning of the spray rod 11 is completed.

[0068] In the present invention, the terms "first", "second", "third", etc. are only used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. In the description, the directions or positional relationships indicated by "upper", "lower", "left", "right", "front", and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and are not intended to indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0069] In addition, in the description of this application, unless otherwise specified, "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0070] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A self-cleaning method for a spray bar, characterized in that: The self-cleaning water channel of the spray bar is configured to switch the output of foam or washing water; when the spray bar performs the self-cleaning function, the foam cleaning stage is first performed and then the washing water cleaning stage is performed; or the washing water cleaning stage is first performed and then the foam cleaning stage is performed and then the washing water cleaning stage is performed; Foam cleaning stage: controlling the self-cleaning water channel to output foam, and controlling the spray bar to perform a self-cleaning action, so that the foam sprayed by the self-cleaning water channel covers the surface of the spray bar performing the self-cleaning action; Cleaning water cleaning stage: controlling the self-cleaning water channel to output cleaning water, and at the same time controlling the spray bar to perform a self-cleaning action, the cleaning water sprayed from the self-cleaning water channel covers the surface of the spray bar performing the self-cleaning action.

2. A spray bar self-cleaning method according to claim 1, characterized in that: The self-cleaning action includes first controlling the spray rod to extend and last for a set first time length, then controlling the spray rod to retract and last for a set second time length, and repeating this process for a set number of times.

3. A spray bar self-cleaning method as claimed in claim 1, characterized in that: After the spray rod completes the hip wash or feminine wash program and the user leaves the seat, the self-cleaning function is automatically started; and it is configured to: perform the self-cleaning action at least once in the foam cleaning stage, and perform the self-cleaning action at least once in the washing water cleaning stage.

4. A spray bar self-cleaning method as claimed in claim 1, characterized in that: When the self-cleaning function of the spray bar is actively started, it is configured to: perform the self-cleaning action a preset number of times during the foam cleaning stage, and perform the self-cleaning action a preset number of times during the washing water cleaning stage.

5. A spray bar self-cleaning method according to claim 1, characterized in that: The self-cleaning water channel of the spray bar is configured to output foam or cleaning water that swings left and right, thereby covering the surface of the spray bar that performs the self-cleaning action to achieve all-round cleaning.

6. A self-cleaning system for a spray bar, comprising a spray bar assembly and a control valve; the spray bar assembly is provided with a spray bar and a self-cleaning nozzle; one of the water outlets of the control valve is connected to the spray bar, the self-cleaning nozzle is located at the outer periphery of the fixed end of the spray bar and is provided with a self-cleaning water channel, and the self-cleaning water channel is connected to the self-cleaning water outlet end of the spray bar; characterized in that: It also includes a mixing device, the liquid inlet of the mixing device is connected to another water outlet of the control valve to input clean water, and the liquid outlet of the mixing device is connected to the self-cleaning nozzle to output the mixed liquid to the self-cleaning water path of the self-cleaning nozzle to output foam; the system is used to execute a self-cleaning method for a spray rod as described in any one of claims 1 to 5.

7. A self-cleaning system for a spray bar as claimed in claim 6, characterized in that: The mixing device includes a shell and a pump body, the shell is provided with a liquid storage chamber, a mixing chamber, a liquid inlet chamber and a liquid outlet chamber; the liquid inlet chamber is provided with the liquid inlet, and the liquid outlet chamber is provided with the liquid outlet; the mixing chamber is provided with a first through hole connected to the liquid inlet chamber and the liquid outlet chamber respectively; the liquid storage chamber is used to hold the foaming liquid; the liquid inlet end of the pump body is connected to the liquid storage chamber, and the liquid outlet end is connected to the mixing chamber and can be controlled to extract the foaming liquid from the liquid storage chamber and send it to the mixing chamber to mix with clean water to obtain the mixed liquid.

8. A self-cleaning system for a spray bar as claimed in claim 7, characterized in that: The mixing chamber is further provided with a second through hole connected to the liquid outlet end of the pump body, and the second through hole is located at the bottom of the mixing chamber; the first through hole is close to the top of the mixing chamber.

9. A self-cleaning system for a spray bar as claimed in claim 6, characterized in that: The self-cleaning nozzle includes an input port, an air inlet, an acceleration hole and a jet port; the input port is located at one end of the self-cleaning water path in the length direction and is connected to the liquid outlet of the mixing device and the self-cleaning water outlet end of the spray rod; the acceleration hole is located between the input port and the air inlet, and the air inlet is located between the acceleration hole and the jet port; the jet port is close to the other end of the self-cleaning water path in the length direction and faces the spray rod.

10. A spray bar self-cleaning system according to claim 9, characterized in that: The clean water or the mixed liquid enters the self-cleaning nozzle through the input port and is accelerated through the acceleration hole, generating negative pressure around the air inlet. The accelerated clean water or the mixed liquid mixes with the gas sucked in by the air inlet to generate foam or cleaning water with bubbles, which is sprayed from the injection port toward the spray rod.

11. A self-cleaning system for a spray bar as claimed in claim 10, characterized in that: The self-cleaning water channel is divided into a first section and a second section with an angle, the first section is provided with the input port at one end, and the other end is connected to one end of the second section and provided with the acceleration hole, the end of the second section away from the first section is set to be closed, and the second section is provided with the air inlet and the injection port on the side facing the spray rod.

12. A spray bar self-cleaning system according to claim 11, characterized in that: The clean water or mixed liquid entering the first section is accelerated by the acceleration hole, and then flows into the second section at high speed to mix with air to form cleaning water or foam. Part of the cleaning water or foam is directly sprayed out from the injection port, and part of the cleaning water or foam flows to the closed end and then flows back to the injection port to collide with new cleaning water or foam, so that the cleaning liquid is sprayed out from the injection port at a variety of different angles to form a left and right swinging effect, thereby covering the entire upper surface of the spray rod and cleaning it in all directions.

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