Spraying head, flushing device, pedestal pan and flushing control method

Abstract

The invention relates to the technical field of bathroom equipment, and discloses an injector head, a flushing device, a pedestal pan and a flushing control method.The injector head comprises a main body piece and a flow limiting piece, an injection channel of the main body piece comprises a first channel and a second channel which are separated from each other, and the flow limiting piece is arranged in the first channel; the flow limiting piece has a first state when the water pressure is not higher than a preset value and has a second state when the water pressure is higher than the preset value, and the sectional area of the water passing opening in the second state is smaller than that in the first state. Therefore, the injector head can change the flow distribution of the first channel and the second channel according to the water pressure change, so that the jet effect of the first channel and the second channel from the water outlet is changed, dirt loosening can be facilitated, and the flushing effect is optimized. The flushing device with the injector head, the pedestal pan with the injector head and the flushing control method applied to the pedestal pan also have the advantages.

Description

Technical Field

[0001] The present application relates to the technical field of bathroom equipment, and in particular to a spray head, a flushing device, a toilet and a flushing control method. Background Art

[0002] The upper part of the toilet bowl is provided with an upper water outlet to form an upward flushing water flow to flush the side wall of the toilet bowl. The bottom of the toilet bowl is provided with a spray head to spray water to the sewage outlet to form a downward flushing water flow to push the accumulated dirt into the sewage outlet. The water flow sprayed by the spray head can also cause the siphon pipe to form a siphon effect, thereby flushing away the dirt. In actual applications, the spraying effect of the spray head is single, and the effect of pushing the dirt accumulated at the sewage outlet is not ideal, and it is difficult to flush the dirt remaining at the sewage outlet. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a spray head capable of changing the water discharge effect according to the change of water pressure. The present application also proposes a flushing device and a toilet with the spray head. The present application also proposes a flushing control method.

[0004] In the first aspect, according to the embodiment of the present application, the injection head includes a main body and a flow limiting member, the main body is provided with an injection channel, the injection channel has a water inlet and a water outlet, the injection channel includes a first channel and a second channel separated from each other, the two ends of the first channel are respectively connected to the water inlet and the water outlet, and the two ends of the second channel are respectively connected to the water inlet and the water outlet; the flow limiting member is arranged in the first channel, and the flow limiting member partially blocks the first channel to form a water outlet in the first channel; the flow limiting member has a first state when the water pressure is not higher than a preset value, and has a second state when the water pressure is higher than the preset value, and the cross-sectional area of ​​the water outlet in the second state is smaller than the cross-sectional area in the first state.

[0005] The spray head according to the embodiment of the present application has at least the following beneficial effects: when the spray head is used, the water flow entering the spray channel from the water inlet flows to the water outlet through the first channel and the second channel respectively. When the water flow pressure is not higher than the preset value (which can be defined as a low-pressure condition), the flow-limiting member can maintain the first state, and the water outlet has a larger cross-sectional area, so that the first channel has a larger flow rate. When the water flow pressure is higher than the preset value (which can be defined as a high-pressure condition), the flow-limiting member can reduce the cross-sectional area of ​​the water outlet, thereby reducing the flow rate of the jet through the first channel, and thus the flow rate of the jet through the second channel increases accordingly. Thus, the spray head can change the flow distribution of the first channel and the second channel according to the high-pressure condition or the low-pressure condition, thereby changing the effect of the jet from the first channel and the second channel from the water outlet. Water flows with different jet effects can push dirt in different ways, which can be conducive to loosening dirt and optimizing the flushing effect.

[0006] According to the injection head of some embodiments of the present application, the outer edge of the flow limiting member abuts against the inner circumferential wall of the first channel, the flow limiting member is provided with the water outlet, and the flow limiting member is configured to be driven by a water flow with a water pressure higher than the preset value to change from the first state to the second state through elastic deformation.

[0007] According to the injection head of some embodiments of the present application, the flow limiting member includes two annular deformation parts, the inner ring edges of the two deformation parts are connected and surround the water outlet, and there is a gap between the outer ring edges of the two deformation parts to form a deformation space between the two deformation parts, and the outer ring edge abuts against the inner circumferential wall of the first channel.

[0008] According to the spray head of some embodiments of the present application, the first channel has a mounting groove at one end facing the water inlet, and the outer edge of the flow limiting member is arranged in the mounting groove.

[0009] According to some embodiments of the injection head of the present application, the end of the first channel facing away from the water inlet is the first water outlet, the end of the second channel facing away from the water inlet is the second water outlet, and the directions of the first water outlet and the second water outlet have an angle θ, 0°<θ<90°.

[0010] According to some embodiments of the injection head of the present application, the first channel includes a connecting section and a guide section arranged in sequence from the water inlet to the water outlet, the connecting section is connected to the water inlet, the guide section is connected to the first water outlet, the inner wall of the guide section includes a guide wall, and the guide wall is inclined toward the second water outlet from the water inlet to the water outlet, and the guide wall has the angle θ with the extension direction of the second channel.

[0011] According to the injection head of some embodiments of the present application, the cross-sectional area of ​​the guide section is smaller than the cross-sectional area of ​​the connecting section.

[0012] According to some embodiments of the spray head of the present application, the inner wall of the connecting section includes an extension wall and an inclined wall arranged opposite to each other, the extension wall is located on the side of the inclined wall away from the second channel, and the extension wall and the inclined wall extend to the guide section; wherein, in the direction from the water inlet to the water outlet, the inclined wall is inclined toward the direction of the extension wall to form a contraction structure whose cross-sectional area gradually decreases toward the guide section.

[0013] According to the spray head of some embodiments of the present application, the first water outlet end and the second water outlet end are arranged at intervals from top to bottom, and along the direction from bottom to top, the lowest point of the edge of the first water outlet end is higher than the highest point of the edge of the second water outlet end.

[0014] According to some embodiments of the injection head of the present application, the end of the first channel facing the water inlet is the first water inlet end, and the end of the second channel facing the water inlet is the second water inlet end, wherein: the first water inlet end and the second water inlet end are arranged at intervals from top to bottom; and / or the cross-sectional area of ​​the first water inlet end is larger than the cross-sectional area of ​​the second water inlet end.

[0015] According to the injection head of some embodiments of the present application, the injection channel further includes a water inlet channel, which is located on the side of the first channel and the second channel facing the water inlet, one end of the water inlet channel passes through the main body to form the water inlet, and the other end is connected to the first channel and the second channel; And / or, the injection channel also includes a water outlet channel, which is located on the side of the first channel and the second channel facing the water outlet, one end of the water outlet channel passes through the end of the main body away from the water inlet to form the water outlet, and the other end connects the first channel and the second channel.

[0016] In a second aspect, a flushing device of an embodiment of the present application is applied to a toilet, and includes a flushing assembly and a spray head of any of the above embodiments, the flushing assembly is used to connect to a water source, the flushing assembly has a first flushing channel and a second flushing channel, the second flushing channel is connected to the spray head; the flushing modes of the flushing assembly include: a first flushing mode that turns on the first flushing channel and turns off the second flushing channel, a second flushing mode that turns on the second flushing channel and turns off the first flushing channel, and a third flushing mode that turns on the first flushing channel and the second flushing channel at the same time; wherein the water pressure in the second flushing channel in the third flushing mode is less than the water pressure in the second flushing mode.

[0017] The flushing device according to the embodiment of the present application has at least the following beneficial effects: when used, in the second flushing mode, the second flushing channel is connected alone, and the water flows out through the jet head. In the third flushing mode, part of the water flows through the first flushing channel, and part of the water flows through the second flushing channel and the jet head. Therefore, compared with the second flushing mode, in the third flushing mode, the water inlet pressure of the jet head is smaller, the cross-sectional area of ​​the water outlet of the first channel of the jet head is larger, and the flow rate is greater. Therefore, according to different flushing modes of the flushing assembly, the jet head can achieve different jet effects, thereby meeting different flushing and spraying requirements under different flushing conditions, which is conducive to improving the flushing performance.

[0018] According to some embodiments of the flushing device of the present application, the flushing device also includes a control module, which is signal-connected to the flushing component, and the control module is configured to control the flushing component to run the first flushing mode, the second flushing mode, and the third flushing mode according to a set timing.

[0019] In a third aspect, the toilet of an embodiment of the present application comprises the aforementioned flushing device and a toilet body, wherein the toilet body is provided with a toilet bowl, a sewage outlet located at the bottom of the toilet bowl, a jet port located at the bottom of the toilet bowl and above the sewage outlet, and an upper flushing outlet connected to the upper part of the toilet bowl; the flushing assembly is connected to the toilet body, the first flushing channel is connected to the upper flushing outlet, the jet head is connected to the jet port, and the water outlet of the jet head faces the sewage outlet.

[0020] The toilet according to the embodiment of the present application has at least the following beneficial effects: when used, in the first flushing mode, the water flow can flow out through the upper flushing port through the first flushing channel to achieve upward flushing, so that the water flow flushes downward from the upper part of the toilet bowl; in the second flushing mode, the water flow can flow out through the second flushing channel through the jet head to achieve downward flushing, and the jetted water flow is used to push the dirt near the sewage outlet at the bottom of the toilet bowl; in the third flushing mode, part of the water flow passes through the first flushing channel and is retained through the upper flushing port, and part of the water flow passes through the second flushing channel and is jetted through the jet head, thereby performing upward and downward flushing at the same time. Among them, with the switching of the second flushing mode and the third flushing mode of the flushing assembly, the water pressure of the water inlet of the jet head can be changed to achieve different jet effects of downward flushing, thereby meeting different flushing and jetting requirements under different flushing conditions, which is conducive to improving the flushing performance.

[0021] Fourthly, the flushing control method of the embodiment of the present application is applied to the aforementioned toilet, and the flushing control method includes: in response to the flushing signal, controlling the flushing component to execute the flushing mode according to the set timing, including: executing the first flushing mode within T2 time, executing the second flushing mode within T3 time, executing the third flushing mode within T4 time, and executing the first flushing mode within T5 time; T2, T3, T4, and T5 are consecutive time periods in sequence.

[0022] The flushing control method according to the embodiment of the present application has at least the following beneficial effects: when used, the flushing assembly performs upward flushing, downward flushing, upward flushing and downward flushing at the same time, and upward flushing in the time period T2-T5. On the one hand, the upper part of the toilet bowl can be flushed by a single upward flushing, and on the other hand, different water pressure conditions can be provided for the downward flushing jet head through a single downward flushing and changes in the water path of the simultaneous upward and downward flushing, so as to achieve different jet effects. In addition, after T3, the upward and downward flushing are performed through the third flushing mode of T4, so that the water pressure of the jet head is reduced, thereby reducing the downward flushing water flow of the jet head, which is conducive to reducing the noise of the empty spray after the single downward flushing.

[0023] According to the flushing control method of some embodiments of the present application, controlling the flushing component to execute the flushing mode according to the set timing also includes: before T2, executing the third flushing mode within T1 time.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a toilet according to an embodiment of the present application; Figure 2 A longitudinal cross-sectional schematic diagram of a toilet according to an embodiment of the present application; Figure 3 A schematic diagram of the structure of the injection head according to an embodiment of the present application; Figure 4 It is a cross-sectional schematic diagram of the spray head of the embodiment of the present application, wherein the dotted arrow indicates the water flow path; Figure 5 for Figure 4 A local enlarged schematic diagram of point A in FIG. Figure 6 It is a schematic diagram of the spray head of the embodiment of the present application observed from the water outlet toward the water inlet, wherein the flow limiting element is in the first state; Figure 7 It is a schematic diagram of the spray head of the embodiment of the present application observed from the water outlet toward the water inlet, wherein the flow limiting member is in the second state; Figure 8 This is a flushing control connection block diagram of a toilet according to an embodiment of the present application; Fig. 9 A schematic flow chart of a flushing control method according to an embodiment of the present application; Fig.10 Schematic diagram of the flushing timing of the flushing assembly in one embodiment of the present application.

[0026] Reference numerals: Toilet body 100; toilet bowl 110; sewage outlet 120; sewage pipe 130; Spray head 200; main body 201; wall 202; partition 203; water inlet 204; water outlet 205; First channel 210; first water inlet end 211; connecting section 212; guide section 213; first water outlet end 214; guide wall 215; inclined wall 216; A second channel 220; a second water inlet 221; a second water outlet 222; Flow limiting member 230; deformation portion 231; deformation space 232; water outlet 233; Water inlet channel 240; water outlet channel 250; Scrub head 300; upper flushing port 310; Flushing assembly 400; first flushing channel 410; second flushing channel 420; flushing valve 430; Control module 500; Water pipe 600. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the concept of the present application and the technical effects produced in combination with the embodiments, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments of the present application, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present application.

[0028] In the description of the embodiments of the present application, if orientation descriptions are involved, the orientations or positional relationships indicated by "up", "down", "front", "back", "left", "right", etc. are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or device referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0029] In the description of the embodiments of the present application, if a feature is referred to as being “set,” “fixed,” “connected,” or “installed” on another feature, it may be directly set, fixed, or connected to another feature, or it may be indirectly set, fixed, connected, or installed on another feature. In the description of the embodiments of the present application, if “several” is involved, it means more than one; if “multiple” is involved, it means more than two; if “greater than,” “less than,” or “exceeds” is involved, it should be understood as not including the number itself; if “above,” “below,” or “within” is involved, it should be understood as including the number itself. If “first” or “second” is involved, it should be understood as being used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0030] The embodiment of the present application provides a spray head, a flushing device and a toilet with the spray head, and a flushing control method. The spray head can change the water discharge effect according to the change of water pressure, so that different flushing effects can be effectively achieved by using different water pressure conditions when applied. Figures 1 to 10 The embodiments of the present application are introduced as follows: refer to Figures 1 to 4 Some embodiments of the toilet include a flushing device and a toilet body 100. The toilet body 100 is provided with a toilet bowl 110, a sewage outlet 120 located at the bottom of the toilet bowl 110, and an upper flushing outlet 310 connected to the upper part of the toilet bowl 110. The flushing device includes a flushing assembly 400 and a spray head 200. The spray head 200 is connected to the toilet body 100 and is located at the bottom of the toilet bowl 110. The water outlet of the spray head 200 faces the sewage outlet 120. The outer periphery of the main body of the spray head 200 may be provided with a connecting portion for connecting with the toilet body 100 to achieve the fixing of the spray head 200. The flushing assembly 400 is used to access a water source. The flushing assembly 400 may have a first flushing channel 410 and a second flushing channel 420. The first flushing channel 410 is connected to the upper flushing outlet 310, and the second flushing channel 420 may be connected to the spray head 200.

[0031] The flushing device is used to flush the toilet bowl 110, wherein water is sent to the upper flushing port 310 through the first flushing channel 410 of the flushing component 400, and the wall surface of the toilet bowl 110 can be flushed from the upper part of the toilet bowl 110, and water is sent to the spray head 200 through the second flushing channel 420 of the flushing component 400. The sprayed water flow can impact the dirt accumulated near the bottom sewage outlet 120 of the toilet bowl 110 to flush the dirt into the sewage outlet 120, and push the stored water in the sewage outlet 120 to trigger the sewage pipe 130 to generate a siphon, thereby realizing sewage replacement through the siphon effect.

[0032] The spray head 200 of the embodiment of the present application includes a main body 201 and a flow limiting member 230. A first channel 210 and a second channel 220 are formed inside the main body 201. The flow limiting member 230 is located inside the main body 201 and connected to the main body 201, and is used to change the flow through the first channel 210 according to the water pressure.

[0033] refer to Figure 3 and Figure 4 In some embodiments, the main body 201 is provided with a jet channel, and the jet channel has a water inlet 204 and a water outlet 205, wherein the jet channel includes a first channel 210 and a second channel 220 separated from each other, and the two ends of the first channel 210 are respectively connected to the water inlet 204 and the water outlet 205, and the two ends of the second channel 220 are respectively connected to the water inlet 204 and the water outlet 205. For example, the main body 201 includes a wall body 202 and a partition, and the wall body 202 is arranged around the periphery of the partition to form a jet channel having a water inlet 204 and a water outlet 205, and the partition 203 is connected to the inner wall of the wall body 202 and separates the first channel 210 and the second channel 220 in the jet channel, and one side of the partition 203 is spaced from the inner wall of the wall body 202 to form the first channel 210, and the other side of the partition 203 is spaced from the inner wall of the wall body 202 to form the second channel 220. Therefore, water can be introduced into the injection channel through the water inlet 204 , and the water can be injected out from the water outlet 205 after being transported through the first channel 210 and the second channel 220 to achieve dual-channel diversion.

[0034] refer to Figures 4 to 7 , the flow limiting member 230 is arranged in the first channel 210, and the flow limiting member 230 partially blocks the first channel 210 to form a water outlet 233 in the first channel 210. The flow limiting member 230 has a first state when the water pressure is not higher than the preset value, and has a second state when the water pressure is higher than the preset value. The cross-sectional area of ​​the water outlet 233 in the second state is smaller than the cross-sectional area in the first state. When used, when the water flow pressure at the water inlet 204 is not higher than the preset value (which can be defined as a low-pressure working condition), the flow limiting member 230 can maintain the first state, and the water outlet 233 has a larger cross-sectional area, so that the first channel 210 has a larger flow rate. When the water flow pressure is higher than the preset value (which can be defined as a high-pressure working condition), the flow limiting member 230 can reduce the cross-sectional area of ​​the water outlet 233, thereby reducing the flow rate of the jet through the first channel 210, and thus the flow rate of the jet through the second channel 220 increases accordingly. Thus, the jet head 200 can automatically change the flow distribution of the first channel 210 and the second channel 220 as the incoming water pressure changes, thereby changing the effect of the first channel 210 and the second channel 220 jetting from the water outlet 205. It can be understood that water flows with different jet effects can push the dirt accumulated at the bottom of the toilet bowl 110 in different ways, which can help loosen the dirt and make it easier to flush it away.

[0035] When in use, the change in the incoming water pressure of the injection head 200 comes from the change in the diversion of the flushing component 400. Therefore, different water pressure conditions can be achieved by controlling the diversion of the flushing component 400. The flow of the dual channels of the injection head 200 is automatically distributed according to different water pressure conditions, and there is no need to set up a flow control structure for the two channels. Moreover, water can be discharged through the two channels under low-pressure conditions to ensure that the injection head 200 has sufficient flow to flush and spray water on the bottom of the toilet bowl 110. Compared with the single-channel water outlet method, the flushing time can be effectively shortened, thereby improving the flushing efficiency.

[0036] For example, the water pressure entering the spray head 200 can be changed by controlling the diversion of the first flushing channel 410 and the second flushing channel 420 by the flushing assembly 400. When the flushing assembly 400 connects the second flushing channel 420 alone, the water flow received by the flushing assembly 400 is delivered to the spray head 200 through the second flushing channel 420 to achieve a high-pressure water flow. When the flushing assembly 400 connects the first flushing channel 410 and the second flushing channel 420 at the same time, the water flow received by the flushing assembly 400 is diverted into the first flushing channel 410 and the second flushing channel 420. At this time, the water pressure in the second flushing channel 420 is lower than that when the water pressure is connected alone. The flow limiting member 230 can be configured to maintain the first state under the low-pressure condition and have the second state under the high-pressure condition. Therefore, the preset value of the water pressure can be the water pressure of the water inlet 204 of the spray head 200 under the low-pressure condition. When the flushing assembly 400 shuts off the first flushing channel 410 and conducts the second flushing channel 420 alone, the water pressure at the water inlet 204 of the spray head 200 increases, thereby exceeding the preset value, and the spray head 200 is in the high-pressure condition. Conversely, when the flushing assembly 400 switches from conducting the second flushing channel 420 alone to conducting the first flushing channel 410 and the second flushing channel 420 at the same time, the high-pressure condition is switched to the low-pressure condition.

[0037] As mentioned above, under high pressure and low pressure conditions, the spray head 200 can achieve different jet effects while ensuring the overall flow rate through the flow limiter 230. Therefore, the spray head 200 can meet the different jet requirements of the toilet flushing device under different working conditions, so that the sewage discharge effect of flushing water is better.

[0038] In the spray head 200 of some embodiments, the flow restricting member 230 can change the cross-sectional area of ​​the water outlet 233 by elastic deformation. The outer edge of the flow restricting member 230 abuts against the inner peripheral wall of the first channel 210, and the flow restricting member 230 is provided with a water outlet 233. The flow restricting member 230 is configured to be driven by a water flow with a water pressure higher than a preset value and to change from a first state to a second state by elastic deformation, so as to reduce the cross-sectional area of ​​the water outlet 233, reduce the flow of the first channel 210, and increase the flow of the second channel 220. When the water pressure is not higher than the preset value, the flow restricting member 230 switches from the second state to the first state due to elastic reset, so that the cross-sectional area of ​​the water outlet 233 increases, and the flow of the first channel 210 is increased, while the flow of the second channel 220 is reduced.

[0039] Among them, reference Figure 4 and Figure 5 , the flow limiting member 230 may include two annular deformation parts 231, the inner ring edges of the two deformation parts 231 are connected and surround to form a water outlet 233, and there is a gap between the outer ring edges of the two deformation parts 231, so that a deformation space 232 is formed between the two deformation parts 231, and the outer ring edge abuts against the inner peripheral wall of the first channel 210. Under high pressure conditions, the water flow squeezes the deformation part 231 on one side, thereby compressing the deformation space 232 between the two deformation parts 231, so that the two deformation parts 231 are further folded in the direction of radial reduction of the water outlet 233, thereby reducing the cross-sectional area of ​​the water outlet 233. When switching from a high pressure condition to a low pressure condition, the two deformation parts 231 can be restored to the first state by the action of elastic force, thereby increasing the cross-sectional area of ​​the water outlet 233. Therefore, the flow control can be achieved through a simple structure, and the flow limiting member 230 can be integrally formed and can be made of elastic materials such as elastic plastics and rubber.

[0040] In some embodiments, the flow limiting member 230 can change the shielding area of ​​the water outlet 233 by moving, thereby changing the cross-sectional area of ​​the water outlet 233. For example, the first channel 210 may include a first cavity and a second cavity, the first cavity is located between the second cavity and the water inlet end, a water outlet 233 is provided between the first cavity and the second cavity, and the flow limiting member 230 is provided in the first cavity and located on the side of the water outlet 233 facing the water inlet 204. A step surface may also be formed between the first cavity and the second cavity, and the flow limiting member 230 abuts on the step surface through an elastic member. When the water pressure of the water inlet 204 is not higher than a preset value, the flow limiting member 230 is located on the side of the water outlet 233 facing the water inlet 204 under the elastic force of the elastic member, and is in the first state. The flow limiting member 230 is configured to be driven by a water flow with a water pressure higher than a preset value to move toward the water outlet 233 to partially block the water outlet 233. For example, the flow limiting member 230 moves into the water outlet 233, occupies part of the cross-sectional area of ​​the water outlet 233, and thus partially blocks the water outlet 233, so that the cross-sectional area of ​​the water outlet 233 (here, the area of ​​the water-passing cross section) is reduced, thereby changing from the first state to the second state. When the water pressure of the water coming from the water inlet 204 is reduced to not higher than the preset value, the flow limiting member 230 returns to the side of the water outlet 233 facing the water inlet 204 under the elastic force of the elastic member, and disengages from the water outlet 233, so that the cross-sectional area of ​​the water outlet 233 increases.

[0041] In other embodiments, the flow limiting member 230 may also be a flow control valve with other structures that can reduce the valve diameter as the water pressure increases and increase the valve diameter as the water pressure decreases.

[0042] In some embodiments, from the water inlet 204 to the water outlet 205, the first channel 210 may have a front section, a middle section, and a rear section that are connected in sequence, the front section is connected to the water inlet 204, and the rear section is connected to the water outlet 205. The flow limiting member 230 may be located in the front section, the middle section, or the rear section in the first channel 210.

[0043] The flow limiting member 230 is located at the front section to achieve flow distribution at one end of the first channel 210 near the water inlet 204. On the one hand, it can improve the response efficiency of the flow with the change of water pressure, and on the other hand, it can avoid occupying the space from the middle section of the first channel 210 to the water outlet, leaving the space from the middle section of the first channel 210 to the water outlet, which can facilitate the design of the required water outlet effect. For example, a tapered channel structure can be set from the middle section of the first channel 210 to the water outlet to achieve the effect of pressurized water outlet, and an inclined channel structure can also be set to achieve an angled spray effect.

[0044] Furthermore, one end of the first channel 210 facing the water inlet 204 may have a mounting groove, and the outer edge of the flow limiting member 230 is disposed in the mounting groove, thereby fixing the flow limiting member 230 at the end of the first channel 210 facing the water inlet 204 .

[0045] The end of the first channel 210 away from the water inlet 204 is defined as the first water outlet 214, and the end of the second channel 220 away from the water inlet 204 is defined as the second water outlet 222. Figure 4 In some embodiments of the spray head 200, the orientation of the first water outlet end 214 and the orientation of the second water outlet end 222 have an angle θ, 0°<θ<90°. In other words, the water outlet directions of the first water outlet end 214 and the second water outlet end 222 have an angle θ, realizing a dual-channel jet mode with different angles. Among them, the value of θ can be 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75° or other values ​​within the range of 0° to 90°.

[0046] When in use, when the spray head 200 is installed at the bottom of the toilet bowl 110, the first water outlet end 214 can be located above the second water outlet end 222, the second water outlet end 222 can be oriented in a horizontal or nearly horizontal direction, and the first water outlet end 214 can be tilted downward to form an acute angle θ with the first water outlet end 214. Thus, when spraying water, a horizontal or nearly horizontal water flow can be formed through the second water outlet end 222, which can push the dirt at the bottom of the toilet bowl 110 in a horizontal direction. At the same time, a tilted downward water flow can be realized through the first water outlet end 214, which can push the dirt in an inclined direction, which is conducive to shaking the bottom of the dirt so that it is easy to be washed away by the water flow, and the tilted downward water flow can flush the wall surface at the bottom of the toilet bowl 110, which is conducive to removing small-volume dirt.

[0047] When switching between high-pressure and low-pressure conditions, the jet flow rates from the first water outlet end 214 and the second water outlet end 222 are different, achieving different jet effects, thereby producing different driving effects on the accumulated dirt. For example, under high-pressure conditions, the flow rate of the first channel 210 is reduced, and the water flow is mainly ejected through the second water outlet end 222 of the second channel 220, forming a larger thrust. At the same time, the first water outlet end 214 forms a smaller flow rate jet, which can flush the bottom wall of the toilet bowl 110 to a certain extent, and also has a certain driving effect on the bottom of the dirt; under low-pressure conditions, although the thrust of the jet is reduced and the flow rate is slowed down, the flow rate of the first channel 210 is increased, and the water flow is mainly ejected through the first channel 210, which can flow along the wall of the bottom of the toilet bowl 110 to flush its surface, achieving different flushing effects.

[0048] The inclined water discharge from the first water outlet 214 can be achieved by providing a guide wall 215 extending to the first water outlet 214 in the first channel 210. Figure 4The first channel 210 may include a connecting section and a guide section 213 arranged in sequence from the water inlet 204 to the water outlet 205, the connecting section is connected to the water inlet 204, the guide section 213 is connected to the first water outlet end 214, and the extension direction of the guide section 213 is inclined relative to the extension direction of the second channel 220 to form an inclined channel structure with an inclined angle θ, so that the water outlet directions of the first water outlet end 214 and the second water outlet end 222 are at an angle θ.

[0049] refer to Figure 4 In some embodiments, the inner wall of the guide section 213 includes a guide wall 215, which is inclined toward the second water outlet end 222 from the water inlet 204 to the water outlet 205, and the guide wall 215 has an angle θ with the extension direction of the second channel 220, so as to guide the water flow in the guide section 213 to the side of the second water outlet end 222 away from the water inlet 204, thereby forming an outlet water flow inclined toward the second water outlet end 222. The inner wall of the guide section 213 that is relatively close to the second channel 220 and the inner wall that is relatively far from the first channel 210 may both have a guide wall 215, and the inclined angle θ of the two guide walls 215 may be equal or unequal.

[0050] refer to Figure 4 In some embodiments, the cross-sectional area of ​​the guide section 213 can be set smaller than the cross-sectional area of ​​the connecting section, and the water flow in the connecting section can be pressurized when passing through the guide section 213, thereby increasing the flushing force of the water flow jetted from the first water outlet 214. Among them, the inner wall of the connecting section includes an extension wall and an inclined wall 216 arranged opposite to each other, and the extension wall is located on the side of the inclined wall 216 away from the second channel 220, and the extension wall and the inclined wall 216 extend to the guide section 213. From the water inlet 204 to the water outlet 205, the inclined wall 216 is inclined toward the direction of the extension wall to form a contraction structure with a cross-sectional area gradually decreasing toward the guide section 213, so that the water flow in the connecting section can be gradually pressurized in the process of converging to the guide section 213.

[0051] refer to Figures 3 to 7In the spray head 200 of some embodiments of the present application, the first water outlet end 214 and the second water outlet end 222 are staggered to form spray water flows at different positions. For example, the two can be arranged at intervals from top to bottom, and the first water outlet end 214 is located above the second water outlet end 222. The shape of the first water outlet end 214 can be square, circular, arc-shaped, or a porous shape including a plurality of openings arranged at intervals. Similarly, the shape of the second water outlet end 222 can also be square, circular, arc-shaped, or a porous shape including a plurality of openings arranged at intervals. As an example, the shape of the first water outlet end 214 is square, and the shape of the second water outlet end 222 is arc-shaped. In the direction from bottom to top, the lowest point of the edge of the first water outlet end 214 is higher than the highest point of the edge of the second water outlet end 222. Specifically, the lowest point of the outer wall surface of the main body 201 in the direction from top to bottom can be used as a reference point, wherein the height of the lowest point of the edge of the first water outlet end 214 relative to the reference point is higher than the height of the highest point of the edge of the second water outlet end 222 relative to the reference point. Thus, when jetting, the water flows of the two water outlet ends can be prevented from impacting each other and affecting the thrust.

[0052] The end of the first channel 210 facing the water inlet 204 is defined as the first water inlet end 211, and the end of the second channel 220 facing the water inlet 204 is defined as the second water inlet end 221. In some embodiments, the first water inlet end 211 and the second water inlet end 221 are arranged at intervals from top to bottom to form a compact structure. The first water outlet end 214 and the second water outlet end 222 arranged up and down can correspond to each other, so that the first channel 210 and the second channel 220 that are directly connected from the water inlet 204 to the water outlet 205 can be formed, which is convenient for processing and reduces the turning of water flow. The water flow can flow directly from the direction of the water inlet 204 to the water outlet 205 to the water outlet 205.

[0053] In some embodiments of the spray head 200, the cross-sectional area of ​​the first water inlet end 211 is larger than the cross-sectional area of ​​the second water inlet end 221, which is conducive to allowing most of the water to flow out through the first channel 210 under low-pressure conditions, ensuring the flushing flow rate and improving the flushing effect on the bottom wall of the toilet bowl 110. In some embodiments, the first channel 210 is provided with a guide section 213 with a smaller cross-sectional area, which can achieve a certain pressurized jet effect.

[0054] In the spray head 200 of the embodiment of the present application, the first channel 210 and the second channel 220 can extend to the water inlet 204 to form a first water inlet end 211 and a second water inlet end 221, respectively, so that water can be diverted when entering the water inlet 204. Alternatively, refer to Figure 4 The first water inlet end 211 and the second water inlet end 221 of the first channel 210 and the second channel 220 do not extend to the water inlet 204, and the water flow is divided after entering the water inlet 204. Figure 4In some embodiments, the jet channel further includes a water inlet channel 240, which is located on the side of the first channel 210 and the second channel 220 facing the water inlet 204. One end of the water inlet channel 240 passes through the main body 201 to form the water inlet 204, and the other end is connected to the first channel 210 and the second channel 220, that is, the first water inlet end 211 of the first channel 210 and the second water inlet end 221 of the second channel 220 are connected to the water inlet 204 through the water inlet channel 240. Water flows into the water inlet 204 and reaches the water inlet channel 240, and then enters the first water inlet end 211 and the second water inlet end 221 to achieve flow distribution.

[0055] In the spray head 200 of the embodiment of the present application, the first channel 210 and the second channel 220 can extend to the water outlet 205 to form a first water outlet end 214 and a second water outlet end 222, respectively, and the water in the two channels can be ejected through the two water outlet ends. Figure 4 , the first water outlet end 214 and the second water outlet end 222 of the first channel 210 and the second channel 220 do not extend to the water outlet 205, and the jet channel further includes a water outlet channel 250, which is located on the side of the first channel 210 and the second channel 220 facing the water outlet 205, one end of the water outlet channel 250 passes through the end of the main body 201 away from the water inlet 204 to form the water outlet 205, and the other end is connected to the first channel 210 and the second channel 220, that is, the first water outlet end 214 and the second water outlet end 222 are connected to the water outlet 205 through the water outlet channel 250. The cross-sectional range of the water outlet channel 250 covers the first water outlet end 214 and the second water outlet end 222 to avoid obstructing the water flow of the two water outlet ends.

[0056] refer to Figure 1 and Figure 2 The flushing device of the embodiment of the present application includes a flushing component 400 and a spray head 200 of any of the above embodiments. The flushing component 400 is used to connect to a water source. The flushing component 400 has a first flushing channel 410 and a second flushing channel 420. The second flushing channel 420 is connected to the spray head 200.

[0057] The flushing modes of the flushing assembly 400 include: a first flushing mode in which the first flushing channel 410 is turned on and the second flushing channel 420 is turned off, a second flushing mode in which the second flushing channel 420 is turned on and the first flushing channel 410 is turned off, and a third flushing mode in which both the first flushing channel 410 and the second flushing channel 420 are turned on. The flushing assembly 400 can switch between different flushing modes according to flushing needs. In the first flushing mode, the first flushing channel 410 is turned on and the second flushing channel 420 is turned off. Therefore, the spray head 200 does not perform a jet, and water flows through the first flushing channel 410 for flushing; in the second flushing mode, the first flushing channel 410 is turned on and the second flushing channel 420 is turned off. Therefore, the spray head 200 does not perform a jet, and water flows through the first flushing channel 410 for flushing; The second flushing channel 420 is turned on and the first flushing channel 410 is turned off, so the water flows through the second flushing channel 420 and ejects water through the spray head 200; in the third flushing mode, the first channel 210 and the second channel 220 are both turned on, and part of the water flows through the first flushing channel 410 for flushing, and part of the water flows through the second flushing channel 420 and ejects water through the spray head 200, so that in the third flushing mode and the second flushing mode, the flow distribution of the first channel 210 and the second channel 220 in the spray head 200 is different, and the water pressure in the second flushing channel 420 in the third flushing mode is lower than the water pressure in the second flushing mode.

[0058] The flushing device is applied to a toilet. In the second flushing mode, the second flushing channel 420 is opened alone, and the water flows out through the jet head 200. In the third flushing mode, part of the water flows through the first flushing channel 410, and part of the water flows through the second flushing channel 420 and flows out through the jet head 200. Therefore, compared with the second flushing mode, in the third flushing mode, the water inlet pressure of the jet head 200 is relatively small, the cross-sectional area of ​​the water outlet 233 of the first channel 210 of the jet head 200 is relatively large, and the flow rate is greater. Therefore, according to different flushing modes of the flushing assembly 400, the jet head 200 can achieve different jet effects, thereby meeting different flushing requirements under different flushing conditions, which is conducive to improving the flushing performance.

[0059] refer to Figure 1 , Figure 2 and Figure 8 In some embodiments of the flushing device, the flushing device further includes a control module 500. The control module 500 is connected to the flushing component 400 by signal, and the control module 500 is configured to control the flushing component 400 to run the first flushing mode, the second flushing mode, and the third flushing mode according to a set timing, so as to realize automatic control of the flushing component 400.

[0060] In some embodiments, the flushing assembly 400 may include a flushing valve 430, and a first connecting pipe and a second connecting pipe connected to the flushing valve 430. The water inlet side of the flushing valve 430 is connected to tap water, for example, the water inlet pipe of the flushing valve 430 is connected to the tap water pipeline 600 to achieve pressure-type (or direct-in) flushing. A first flushing channel 410 is formed inside the first connecting pipe, and a second flushing channel 420 is formed inside the second connecting pipe. The water distribution device can be controlled to switch one of the following conduction modes: The first flushing channel 410 is opened and the second flushing channel 420 is closed to put the flushing assembly 400 in the first flushing mode; or the second flushing channel 420 is opened and the first flushing channel 410 is closed to put the flushing assembly 400 in the second flushing mode; or the first flushing channel 410 and the second flushing channel 420 are opened to put the flushing assembly 400 in the third flushing mode.

[0061] The control module 500 can be connected to the flush valve 430 signal, so as to control the flush valve 430 according to the set timing to switch the flushing mode. The flush valve 430 can adopt a commonly used water diversion valve with a water diversion function, and the opening, closing or partial opening of the set channel can be achieved through the movement of the water diversion valve core, which will not be described in detail here.

[0062] The principle and method of the control module 500 controlling the flush valve 430 to switch the flushing mode according to the set timing can be easily implemented by those skilled in the art based on the existing controller functions and the contents disclosed in this application. For example, instructions for executing timing control, logical operations, etc. can be stored inside the controller to control the action of the flush valve 430 through digital or analog input and output.

[0063] refer to Figure 1 and Figure 2 The toilet of the embodiment of the present application includes the aforementioned flushing device and a toilet body 100, wherein the toilet body 100 is provided with a toilet bowl 110, a sewage outlet 120 located at the bottom of the toilet bowl 110, a jet port located at the bottom of the toilet bowl 110 and above the sewage outlet 120, and an upper flushing outlet 310 connected to the upper part of the toilet bowl 110; a flushing assembly 400 is connected to the toilet body 100, a first flushing channel 410 is connected to the upper flushing outlet 310, a jet head 200 is connected to the jet port, and a water outlet 205 of the jet head 200 faces the sewage outlet 120.

[0064] When used, in the first flushing mode, the water flow can flow out through the upper flushing port 310 through the first flushing channel 410 to achieve upward flushing, so that the water flow flushes downward from the upper part of the toilet 110. In the second flushing mode, the water flow can flow out through the second flushing channel 420 through the jet head 200 to achieve downward flushing, and the jetted water flow is used to push the dirt near the sewage outlet 120 at the bottom of the toilet 110. In the third flushing mode, part of the water flow passes through the first flushing channel 410 and is left through the upper flushing port 310, and part of the water flow passes through the second flushing channel 420 and is jetted through the jet head 200, thereby performing upward flushing and downward flushing at the same time. Among them, with the switching of the second flushing mode and the third flushing mode of the flushing assembly 400, the water pressure of the water inlet 204 of the jet head 200 can be changed to achieve different jet effects of downward flushing, thereby meeting different flushing and jetting requirements under different flushing conditions, which is conducive to improving the flushing performance. The toilet may include a scrubber head 300, which is mounted on the upper portion of the toilet body 100. The water inlet end of the scrubber head 300 is connected to the first flushing channel 410, and the water outlet end of the scrubber head 300 forms an upper flushing port 310. The water flow of the first flushing channel 410 is sprayed out through the scrubber head 300 to perform an upper flushing of the ceramic bag of the toilet bowl 110.

[0065] The toilets of the related art still have the problems of noise and splashing when flushing. Specifically, some toilets adopt the flushing method of alternating up-down-up, so that the upper part of the toilet is first washed through the upper flushing port 310, and the bottom sewage outlet 120 is replenished with water. Then the up flushing is closed, the down flushing is opened to form a siphon, and then the down flushing is closed and the up flushing is opened for the second time to replenish the water seal in the sewage outlet 120 at the bottom of the toilet bowl 110. After the water replenishment is completed, the flushing mode is closed. Some toilets also add a down flushing-up flushing after the second up flushing, that is, the flushing method of alternating up flushing-down flushing-up flushing-up flushing-down flushing is adopted to improve the sewage discharge effect. However, in actual applications, when the flush is started, especially at the moment of the up-flush start, high-pressure and high-flow water is rapidly pushed forward in the first flush channel 410 connected to the upper flush outlet 310, and the water flow squeezes the air that originally existed in the pipe. Due to the low air density, the water flow pushes forward very quickly, and the air is quickly pushed to the outlet position of the upper flush outlet 310, which will form an air burst sound. At the same time, the water flow speed is extremely fast, and the range is increased, resulting in splashing water at the start. During the down-flush process, the down-flush starts to generate high-pressure and high-flow water, and the water sprays out from the down-flush nozzle, triggering the siphon of the sewage pipe to quickly empty the water stored at the sewage outlet 120 at the bottom of the toilet 110 to achieve sewage replacement. In the latter stage of the siphon, the down-flush is maintained for a period of time to flush away the small volume of dirt that may exist. At this time, the water column is exposed to the air, generating a huge air spray noise, affecting the experience. The toilet and flushing control method of the embodiment of the present application can effectively eliminate or reduce the above problems.

[0066] refer to Figures 4 to 10The flushing control method of the embodiment of the present application includes: applied to the aforementioned toilet, in response to the flushing signal, controlling the flushing component 400 to execute the flushing mode according to the set timing, including: executing the first flushing mode within T2 time, executing the second flushing mode within T3 time, executing the third flushing mode within T4 time, and executing the first flushing mode within T5 time; T2, T3, T4, T5 are consecutive time periods.

[0067] When flushing, starting the flush switch can generate a flushing signal. During the flushing process, the flushing component 400 performs upward flushing, downward flushing, upward and downward flushing at the same time, and upward flushing in succession within the time period T2-T5. On the one hand, the upper part of the toilet bowl 110 can be flushed by a single upward flush. On the other hand, different water pressure conditions can be provided for the downward flushing spray head 200 through the changes in the water path of a single downward flush and simultaneous upward and downward flushing, thereby achieving different jet effects and helping to improve the flushing efficiency of dirt. Moreover, during the flushing process within the T3 time, the flushing assembly 400 turns on the second flushing channel 420 and turns off the first flushing channel 410, and all the water flows into the spray head 200 through the second flushing channel 420. The spray head 200 works alone to achieve the jet effect of water flowing through the first channel 210 and the second channel 220 under high-pressure conditions, which can strongly push dirt and trigger siphoning; after T3, the third flushing mode of T4 is used to perform up and down flushing, so that the water pressure of the spray head 200 is reduced, thereby reducing the pressure and flow rate of the down-flushing water flow of the spray head 200, and achieving the jet effect of the spray head 200 under low-pressure conditions. The water flow can flow along the wall to flush the wall surface at the bottom of the toilet bowl 110, which is beneficial to effectively reduce the empty spray noise in the rear section of the T3 down-flushing alone.

[0068] Among them, in some embodiments, controlling the flushing assembly 400 to execute the flushing mode according to the set timing also includes: before T2, executing the third flushing mode within T1. That is, before performing the up-flush of the first flushing mode alone, the simultaneous up-flush and down-flush of the third flushing mode are performed first, and T1 can start from the response to the flushing signal, that is, the third flushing mode is adopted at the moment of starting the flushing. At this time, the flushing assembly 400 diverts the water flow into the first flushing channel 410 and the second flushing channel 420, and both flushing channels are in low-pressure conditions. Compared with the first flushing mode, the water pressure and flow in the first flushing channel 410 are reduced, so the flow rate is reduced, and the air in the pipeline can be discharged more slowly, effectively eliminating or weakening the explosive sound at the moment of spraying at the start, and effectively eliminating or weakening the splash of water droplets brought by the air explosion.

[0069] Among them, T1, T2, T3, T4, and T5 are consecutive time periods. Fig. 9 , Fig. 9In the figure, the upper line L1 represents the up-flushing sequence, the lower line L2 represents the down-flushing sequence, the horizontal axis t represents the time axis, t0~t5 on the t axis are time points, t0 is the starting time point when the flushing starts, and T1 is the duration from the start t0 to t1. In T1, the flushing component executes the third flushing mode, and the up-flushing and down-flushing are synchronously overlapped. T2 is the duration from t1 to t2, in T2, the flushing component executes the first flushing mode, the up-flushing is maintained and the down-flushing is closed. T3 is the duration from t2 to t3, in T3, the flushing component switches to the first flushing mode, closes the up-flushing and opens the down-flushing at the same time. T4 is the duration from t3 to t4, in T4, the flushing component executes the third flushing mode again, the down-flushing is maintained and the up-flushing is opened, and the overlapping working condition is performed. T5 is the duration from t4 to t5, in this duration, the flushing component executes the first flushing mode, keeps the up-flushing and closes the down-flushing.

[0070] In specific applications, the flush switch can be activated manually or by induction. For example, the flush switch can be activated by the user manually operating the flush switch (such as a physical switch, a touch switch, or an induction switch) or by human body sensing to determine that the user has left the use position after use.

[0071] refer to Fig. 9 and Fig.10 The flushing control method of an embodiment of the present application can perform flushing control according to the following steps: S100: In response to the flushing signal, the flushing assembly 400 is controlled to execute the third flushing mode, the up-flush and the down-flush are opened at the same time, and T1 is maintained; S200: Switch to the first flushing mode, close the down flushing and keep the up flushing for T2; S300: Switch to the second flushing mode, the upper flush is closed and the lower flush is opened, which lasts for a certain time T3, and the siphon is almost finished; S400: Switch to the third flushing mode again, the down flush is maintained, the up flush is turned on, and it is maintained for a short time T4; S500: Switch to the first flushing mode, close the down flush, keep T5 for the up flush, replenish water to the ceramic water seal, and after reaching the required water surface, close the up flush, and end a flushing process.

[0072] The flushing control method of the embodiment of the present application is applied to the toilet of the above-mentioned embodiment. The change of the water pressure conditions and flow distribution of the up-flush and down-flush can be realized through the timing control of the first flushing mode, the second flushing mode, and the third flushing mode. This is not only conducive to reducing noise, but also, in a flushing process (for example, from T1 to T5, or from T2 to T5), the down-flush spray head 200 can automatically distribute the flow of the dual channels as the water pressure conditions of the down-flush change, thereby achieving different jet effects.

[0073] As an example, the flushing process of the toilet in the embodiment of the present application is as follows: When the flush is started, the flush assembly 400 executes the third flush mode, and the upper and lower flushes are performed simultaneously, maintaining T1, which can be called the overlapping working condition of the upper and lower flushes. At this time, the upper and lower flushes are separated, and the first flush channel 410 and the second flush channel 420 are in a low-pressure working condition. The water flow rate of the tap water from the washing head 300 through the flush valve 430 to the upper flush port 310 is reduced, and the water flow speed is reduced. The water flow can slowly discharge the air in the washing pipeline from the upper flush port 310, effectively eliminating or weakening the explosive sound at the moment of the first spray from the washing head 300, and the splashing of water droplets brought by the air explosion, thereby eliminating or weakening the splashing problem at the moment of starting. At the same time, since the second flushing channel 420 is in a low-pressure working condition, the water inlet position of the injection head 200 is at low pressure, and the water flow cross-sectional area of ​​the water outlet 233 of the flow limiting member 230 is relatively large, the water in the second flushing channel 420 mainly flows through the first channel 210 of the injection head 200, and forms a jet downward at an angle to the horizontal at the water outlet 205, forming a small thrust water flow that flows along the ceramic wall surface at the bottom of the toilet bowl 110, which plays a role in loosening the base of the dirt accumulated at the sewage outlet 120, and creates the conditions for sewage discharge preparation for subsequent siphoning and injection to push away the dirt.

[0074] At the end of T1, the flushing assembly 400 switches to the first flushing mode, closing the down flushing and performing the up flushing alone, and maintaining T2, which can be called a stable flushing condition. Since the flushing pipeline is already filled with water at T1, the water has a greater density than air, which plays a better buffering role for the subsequent water, ensuring the stability of the entire flow state and stably completing the flushing action of the ceramic liner bag of the toilet bowl 110.

[0075] At the end of T2, the flushing assembly 400 switches to execute the second flushing mode, closing the upper flush and opening the lower flush, and maintaining T3. At this time, the lower flush works alone, and the second flushing channel 420 is in a high-pressure working condition. At this time, the water flow rate is the highest. The flow-limiting member 230 of the spray head 200 reduces the cross-sectional area of ​​the water outlet 233 under the action of water pressure, thereby reducing the flow of the first channel 210. The water flow of the second flushing channel 420 is concentrated and sprayed out from the first channel 210, forming a large forward thrust, driving the water seal at the bottom of the toilet 110 The sewage outlet 120 triggers the siphon and begins to suck away the dirt in front of the curved pipe sewage outlet 120. In addition, due to the effect of the third flushing mode of T1, the base of the dirt is effectively loosened, so that the state in the water becomes easier to be siphoned away, and the flushing sewage capacity is improved. After a certain period of time T3, the siphon is close to the end, and most of the dirt has been siphoned away.

[0076] At the end of T3, the flushing assembly 400 switches to execute the third flushing mode, the down flush is maintained, and the up flush is turned on, so that the up flush and down flush are performed simultaneously, and T4 is maintained. At this time, the overlapping working condition is entered again, the first flushing channel 410 and the second flushing channel 420 are in a low-pressure working condition, the water inlet position of the spray head 200 becomes low pressure, the water flow cross-sectional area of ​​the water outlet 233 of the flow-limiting member 230 is large, and the water of the second flushing channel 420 mainly flows through the first channel 210 of the spray head 200, and forms a jet downward at an angle to the horizontal at the outlet 205, forming a small thrust water flow that flows along the ceramic wall surface at the bottom of the toilet bowl 110, and the low-speed water flow takes away the small volume of dirt that may remain at the bottom, and at this time the water flow speed is low and flows along the wall, reducing the air spray noise in the rear section of the spray. At the same time, the water flow speed of the first flushing channel 410 is reduced, and the water flow can enter the washing pipe pipeline more slowly, and the flushing state of T1 can be achieved when the washing is restarted, eliminating the air burst sound and the splashing water when starting.

[0077] When T4 ends, the flushing assembly 400 switches to execute the first flushing mode, the lower flush is closed, and the upper flush is maintained at T5, and the ceramic water seal at the bottom of the toilet bowl 110 is replenished with water until the required water surface is reached, and the upper flush is also closed, and the flushing ends.

[0078] The spray head 200, flushing device, toilet and flushing control method of the embodiment of the present application can achieve different flushing effects under different water pressure conditions through the spray head 200, effectively improve the flushing performance and sewage discharge efficiency, and some embodiments can effectively eliminate or reduce noise and splashing, and can be applied to toilets in home or public places, which is beneficial to improving the user experience.

[0079] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. The injection head is characterized in that: include: The main body is provided with an injection channel, the injection channel has a water inlet and a water outlet, the injection channel includes a first channel and a second channel separated from each other, the two ends of the first channel are respectively connected to the water inlet and the water outlet, and the two ends of the second channel are respectively connected to the water inlet and the water outlet; A flow limiting member is arranged in the first channel, and the flow limiting member partially blocks the first channel to form a water outlet in the first channel; the flow limiting member has a first state when the water pressure is not higher than a preset value, and has a second state when the water pressure is higher than the preset value, and the cross-sectional area of ​​the water outlet in the second state is smaller than the cross-sectional area in the first state.

2. The injection head according to claim 1, characterized in that The outer edge of the flow limiting member abuts against the inner circumferential wall of the first channel, the flow limiting member is provided with the water outlet, and the flow limiting member is configured to be driven by a water flow with a water pressure higher than the preset value to change from the first state to the second state through elastic deformation.

3. The injection head according to claim 2, characterized in that The flow limiting member includes two annular deformation parts, the inner ring edges of the two deformation parts are connected and surround the water outlet, and there is a gap between the outer ring edges of the two deformation parts so that a deformation space is formed between the two deformation parts, and the outer ring edge abuts against the inner circumferential wall of the first channel.

4. The injection head according to claim 2, characterized in that: One end of the first channel facing the water inlet is provided with a mounting groove, and the outer edge of the flow limiting member is arranged in the mounting groove.

5. The injection head according to claim 1, characterized in that One end of the first channel away from the water inlet is a first water outlet, and one end of the second channel away from the water inlet is a second water outlet. The first water outlet and the second water outlet have an angle θ, 0°<θ<90°.

6. The injection head according to claim 5, characterized in that The first channel includes a connecting section and a guide section which are arranged in sequence from the water inlet to the water outlet, the connecting section is connected to the water inlet, the guide section is connected to the first water outlet, and the inner wall of the guide section includes a guide wall, which is inclined toward the second water outlet from the water inlet to the water outlet, and the guide wall has the angle θ with the extension direction of the second channel.

7. The injection head according to claim 6, characterized in that The cross-sectional area of ​​the guide section is smaller than the cross-sectional area of ​​the connecting section.

8. The injection head according to claim 6, characterized in that The inner wall of the connecting section includes an extension wall and an inclined wall arranged opposite to each other, the extension wall is located on the side of the inclined wall away from the second channel, and the extension wall and the inclined wall extend to the guide section; wherein, in the direction from the water inlet to the water outlet, the inclined wall is inclined toward the direction of the extension wall to form a contraction structure whose cross-sectional area gradually decreases toward the guide section.

9. The injection head according to claim 5, characterized in that: The first water outlet end and the second water outlet end are arranged at intervals from top to bottom, and along the direction from bottom to top, the lowest point of the edge of the first water outlet end is higher than the highest point of the edge of the second water outlet end.

10. The injection head according to claim 1, characterized in that One end of the first channel facing the water inlet is the first water inlet end, and one end of the second channel facing the water inlet is the second water inlet end, wherein: the first water inlet end and the second water inlet end are arranged at intervals from top to bottom; and / or the cross-sectional area of ​​the first water inlet end is greater than the cross-sectional area of ​​the second water inlet end.

11. The injection head according to any one of claims 1 to 10, characterized in that The injection channel further includes a water inlet channel, which is located on the side of the first channel and the second channel facing the water inlet, one end of the water inlet channel passes through the main body to form the water inlet, and the other end of the water inlet channel is connected to the first channel and the second channel; And / or, the injection channel also includes a water outlet channel, which is located on the side of the first channel and the second channel facing the water outlet, one end of the water outlet channel passes through the end of the main body away from the water inlet to form the water outlet, and the other end connects the first channel and the second channel.

12. A flushing device, applied to a toilet, characterized in that: include: The injection head according to any one of claims 1 to 11; A flushing assembly, used for connecting to a water source, the flushing assembly having a first flushing channel and a second flushing channel, the second flushing channel being connected to the spray head; The flushing modes of the flushing assembly include: a first flushing mode in which the first flushing channel is connected and the second flushing channel is closed, a second flushing mode in which the second flushing channel is connected and the first flushing channel is closed, and a third flushing mode in which both the first flushing channel and the second flushing channel are connected; Wherein, the water pressure in the second flushing channel in the third flushing mode is lower than the water pressure in the second flushing mode.

13. The flushing device according to claim 12, characterized in that: The flushing device further includes a control module, which is signal-connected to the flushing component, and is configured to control the flushing component to run the first flushing mode, the second flushing mode, and the third flushing mode according to a set timing.

14. A toilet, characterized in that: include: The flushing device according to claim 12 or 13; A toilet body, the toilet body is provided with a toilet bowl, a sewage outlet located at the bottom of the toilet bowl, a jet port located at the bottom of the toilet bowl and above the sewage outlet, and an upper flushing outlet connected to the upper part of the toilet bowl; the flushing assembly is connected to the toilet body, the first flushing channel is connected to the upper flushing outlet, the jet head is connected to the jet port, and the water outlet of the jet head faces the sewage outlet.

15. A flushing control method, applied to the toilet according to claim 14, characterized in that: The flushing control method comprises: In response to the flushing signal, the flushing component is controlled to execute the flushing mode according to the set timing, including: executing the first flushing mode within T2, executing the second flushing mode within T3, executing the third flushing mode within T4, and executing the first flushing mode within T5; T2, T3, T4 and T5 are consecutive time periods.

16. The flushing control method according to claim 15, characterized in that: Controlling the flushing component to execute the flushing mode according to the set timing also includes: before T2, executing the third flushing mode within T1 time.

Images