CN216948608U - Intelligent closestool and anti-siphon structure thereof - Google Patents

Abstract

The utility model discloses an intelligent closestool and an anti-siphon structure thereof, wherein the anti-siphon structure is arranged in a water path and comprises an anti-siphon body, the anti-siphon body is provided with an inner cavity, a water inlet, a water outlet and an air inlet which are respectively communicated with the inner cavity, the water inlet and the water outlet are respectively communicated with the water path, the air inlet is communicated with outside air and the inner cavity, the anti-siphon body comprises a hollow main body with an opening at one end and a gland which is fixedly connected with the opening in a covering mode, the main body and the gland cover are connected to form the inner cavity, a deflection channel which is communicated with the water inlet, the water outlet and the air inlet is formed in the inner cavity, the deflection channel comprises an axial deflection channel which is provided with deflection in the axial direction of the opening, and water at the water inlet flows out from the water outlet after passing through the axial deflection channel. The anti-siphon structure provided by the utility model has a water mixing function, and is simple and compact as a whole.

Description

Intelligent closestool and anti-siphon structure thereof

Technical Field

The utility model relates to an anti-siphon structure and an intelligent closestool with the same.

Background

The intelligent apron of current intelligent closestool in generally be equipped with and be used for carrying out abluent cleaning system to the human body, some adoption instant heating type heaters of cleaning system heat rivers. Because the outlet water temperature of the instant heating type heater is often unstable, the water flow is generally required to be mixed so as to make the outlet water temperature more uniform and stable. In the prior art, some structures adopt mixed water in the interior of the instant heater, and some structures adopt mixed water in the water outlet waterway of the instant heater.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the temperature of outlet water of the instant heating type heater is unstable, the utility model provides an anti-siphon structure and an intelligent closestool with the same, wherein the anti-siphon structure has a water mixing function and is simple and compact as a whole; the intelligent closestool provided with the anti-siphon structure does not need to be provided with a structure for mixing water flow inside the instant heating heater or on a water outlet water path of the instant heating heater, and the whole structure is simpler and more compact on the premise of ensuring that the water flow flowing out of the instant heating heater is fully mixed.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides an anti-siphon structure, locates in the water route, anti-siphon structure is including anti-siphon body, anti-siphon body have the inner chamber, with water inlet, delivery port and the air inlet that the inner chamber is linked together respectively, water inlet and delivery port respectively with the water route is linked together, air inlet intercommunication external air with the inner chamber, anti-siphon body includes that one end open-ended cavity main part connects with the lid to be fixed open-ended gland, main part and gland lid connect and form the inner chamber, be formed with the intercommunication in the inner chamber the water inlet the baffling passageway of delivery port and air inlet, the baffling passageway includes the axial baffling passageway that has the baffling on the open-ended axial direction, the water of water inlet is through having behind the axial baffling passageway by the delivery port flows.

In a preferred embodiment, a water mixing piece is arranged in the inner cavity, the water mixing piece divides the inner cavity into a first cavity and a second cavity along the axial direction of the opening, and a flow passage is arranged between the first cavity and the second cavity; the water inlet and the water outlet are arranged on the wall of the first cavity, the water outlet is communicated with the first cavity, and the opening is communicated with the second cavity; a drainage tube is arranged in the inner cavity, the inlet end of the drainage tube is communicated with the water inlet, and the outlet end of the drainage tube is communicated with the second cavity; the water flowing to the water inlet flows to the second cavity through the drainage tube and then flows to the first cavity through the overflowing channel and then flows out of the water outlet, namely the drainage tube, the second cavity and the overflowing channel form the axial baffling channel.

In a preferred embodiment, the flow passage is arranged on the water mixing part or on the side wall of the inner cavity or between the side wall of the inner cavity and the water mixing part.

In a preferred embodiment, the water inlet is disposed on the bottom wall of the main body, the water inlet and the axis of the opening are parallel or coincident, the drainage tube extends along the axial direction of the water inlet, and the water mixing member is provided with a through hole for the drainage tube to penetrate through.

In a preferred embodiment, the baffle channel further includes a radial baffle channel having a baffle in the radial direction of the opening, the water mixing member is located on one side of the first chamber and provided with an annular groove, the annular groove is annular and provided with a water blocking portion, the annular groove is provided with an inlet of the radial baffle channel on the bottom wall or the side wall of the annular groove on one side of the water blocking portion, the annular groove on the other side of the water blocking portion is provided with an outlet of the radial baffle channel on the bottom wall or the side wall of the annular groove, the inlet of the radial baffle channel is communicated with the overflow channel, the outlet of the radial baffle channel corresponds to the position of the water outlet, and the water flowing into the first chamber flows along the radial baffle channel and then flows out of the water outlet.

In a preferred embodiment, the water mixing member is a cylindrical structure with two open ends, a partition plate is arranged in the water mixing member along the radial direction, the partition plate divides an inner cavity of the water mixing member into a water inlet cavity and a water outlet cavity, the water inlet cavity is positioned in the second cavity, the air inlet is communicated with the second cavity, and the water outlet cavity is positioned in the first cavity; the baffle plate is provided with the overflowing channel and a through hole for the drainage tube to penetrate through.

In a preferred embodiment, a radial deflection channel which is bent or curved in the radial direction of the opening is arranged in the water inlet cavity and/or the water outlet cavity, and the length of a flow path of the radial deflection channel is larger than the straight distance between the water inlet and the water outlet.

In a preferred embodiment, a plurality of water disturbing ribs are arranged on the radial baffling channel at intervals along the water flow direction.

In a preferred embodiment, the water inlet is positioned on the bottom wall of the main body, the water outlet is positioned on the side wall of the main body, and the air inlet is positioned on the press cover; the water mixing piece and the anti-siphon body are integrally formed or separately formed.

In a preferred embodiment, the baffle channels further comprise radial baffle channels having a baffle in a radial direction of the opening, and the axial baffle channels are located upstream and/or downstream of the radial baffle channels.

In a preferred embodiment, the radial deflection channel is S-shaped, V-shaped or annular, and the axial deflection channel is U-shaped.

In a preferred embodiment, the air inlet is arranged on the press cover; an anti-siphon pad is further arranged in the second cavity, the anti-siphon pad moves between the air inlet and the outlet end of the drainage tube, when water enters from the water inlet, the anti-siphon pad moves to a first position for opening the outlet end of the drainage tube and closing the air inlet under the action of the pressure of water flow flowing out of the drainage tube, and when the water stops from the water inlet, the anti-siphon pad resets to a second position for closing the outlet end of the drainage tube and opening the air inlet; or a one-way valve is arranged at the air inlet, and closes the air inlet under the action of water pressure in the second cavity and opens the air inlet when the water pressure in the second cavity is insufficient or negative pressure is formed in the second cavity.

The utility model also provides an intelligent closestool which comprises an intelligent cover plate, wherein the intelligent cover plate is provided with an instant heating type heater, the intelligent cover plate is also provided with any one anti-siphon structure, and the anti-siphon structure is arranged at the downstream of the heating cavity of the instant heating type heater.

In a preferred embodiment, the instantaneous heater comprises an instantaneous heater body and a heating element arranged in the instantaneous heater body, the anti-siphon body is connected with the instantaneous heater body through a communicating pipe, or the anti-siphon body and the instantaneous heater body are integrally formed.

Compared with the prior art, the utility model has the beneficial effects that:

the anti-siphon device is characterized in that a deflection channel communicated with the water inlet, the water outlet and the air inlet is formed in the inner cavity of the anti-siphon body, the deflection channel comprises an axial deflection channel which is provided with deflection in the axial direction of the opening, water in the water inlet flows out from the water outlet after passing through the axial deflection channel, the temperature of the flowing water is more uniform by arranging the axial deflection channel, the requirement on the radial size of the inner cavity of the anti-siphon body can be greatly reduced on the premise of meeting the requirement of sufficient water mixing, the radial size of the anti-siphon body can be designed to be smaller, so that the water pressure applied to the pressing cover by the water flow in the inner cavity of the anti-siphon body can be reduced, the connection between the pressing cover and the main body is more reliable, and the anti-siphon structure is simple and compact on the whole. In addition, because the water mixing function is integrated on the anti-siphon structure, the intelligent closestool provided with the anti-siphon structure does not need to be provided with a structure for mixing water flow independently inside the instant heating heater or on a water outlet water path of the instant heating heater, and the structure of the whole intelligent closestool device is simpler and more compact on the premise of ensuring that the water flow flowing out of the instant heating heater is fully mixed.

The inner cavity of the anti-siphon body is provided with the water mixing part which divides the inner cavity into a first cavity and a second cavity along the axial direction of the opening, the overflowing channel is arranged between the first cavity and the second cavity, the water inlet and the water outlet are arranged on the cavity wall of the first cavity, the water outlet is communicated with the first cavity, the opening is communicated with the second cavity, the inner cavity is also provided with the drainage tube, the inlet end of the drainage tube is communicated with the water inlet, the outlet end of the drainage tube is communicated with the second cavity, therefore, the water flowing to the water inlet flows to the second cavity through the drainage tube and flows out from the water outlet after flowing to the first cavity through the overflowing channel, so that the water is firstly drained to the second cavity from the water inlet of the first cavity and then returns to the first cavity and flows out from the water outlet of the first cavity, thereby lengthening the water flow path, and realizing the full mixing of the water flow through the two cavities, the structure is simple and reliable.

The water inlet cavity and/or the water outlet cavity are/is internally provided with a radial baffling channel which is bent or bent in the radial direction of the opening, and the flow path of water flow in the inner cavity can be further lengthened by arranging the radial baffling channel, so that the water mixing effect is better.

One side of the water mixing part, which is positioned in the first cavity, is provided with an annular groove, and the annular groove is provided with an annular radial baffling channel, so that the structure is simple and compact.

The water mixing piece is of a cylindrical structure with openings at two ends, the water mixing piece is provided with a partition plate along the radial direction, the partition plate divides an inner cavity of the water mixing piece into a water inlet cavity and a water outlet cavity, the water inlet cavity is located in the second cavity, the air inlet is communicated with the second cavity, and the water outlet cavity is located in the first cavity, so that water flow is baffled along the axial direction of the water mixing piece, and the water mixing piece is simple and ingenious in structure.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic perspective exploded view of an anti-siphon structure in accordance with an embodiment of the present invention in cooperation with an instantaneous heater of a toilet bowl;

FIG. 2 is a partial cross-sectional view of an anti-siphon structure according to an embodiment of the present invention when water is not entering the water inlet;

FIG. 3 is a schematic view of the anti-siphon structure according to an embodiment of the present invention when water enters the water inlet;

FIG. 4 is a second schematic view of the flow of water at the inlet of an anti-siphon structure according to an embodiment of the present invention (the dotted line with arrows indicates that the flow path is not visible at this point, and the flow of water is along the bottom surface of the face, corresponding to the flow path indicated by the solid line with arrows in FIG. 5);

FIG. 5 is a third schematic flow diagram (shown with solid lines with arrows) of an anti-siphon structure according to an embodiment of the present invention when water enters the water inlet;

fig. 6 is a perspective view of a water mixing member of an anti-siphon structure according to an embodiment of the present invention (corresponding to the orientation shown in fig. 1, viewed from top to bottom);

fig. 7 is a perspective view of a water mixing member of an anti-siphon structure according to an embodiment of the present invention (corresponding to the orientation shown in fig. 1, viewed from bottom to top);

the reference numbers are:

1, an anti-siphon body, 10 air inlets, 11 water inlets and 12 water outlets; 13 inner cavity, 131 first cavity, 132 second cavity, 14 main body, 141 opening, 15 gland;

2 water mixing piece, 21 flow passage, 22 perforation, 23 annular groove (radial deflection passage), 231 water retaining part, 232 inlet of radial deflection passage, 233 outlet of radial deflection passage, and 24 baffle plate; 25 water disturbing ribs;

3, a drainage tube;

4 an anti-siphon pad;

5, a body of an instant heating type heater and a body of an instant heating type heater 51; the element is heated 52.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.

Referring to fig. 1 to 7, a first embodiment of the present invention provides an anti-siphon structure disposed in a waterway, the anti-siphon structure includes an anti-siphon body 1, the anti-siphon body 1 has an inner cavity 13, and a water inlet 11, a water outlet 12 and an air inlet 10 respectively communicated with the inner cavity 13. The water inlet 11 and the water outlet 12 are respectively communicated with a water path, and the air inlet 10 is communicated with the outside air and the inner cavity 13. The anti-siphon body 1 comprises a hollow main body 14 with an opening 141 at one end and a gland 15 which is fixedly covered on the opening 141, the main body 14 and the gland 15 are covered to form an inner cavity 13, a deflection channel which is communicated with a water inlet 11, a water outlet 12 and an air inlet 10 is formed in the inner cavity 13, the deflection channel comprises an axial deflection channel which is provided with deflection in the axial direction of the opening 141, and water in the water inlet 11 flows out from the water outlet 12 after passing through the axial deflection channel.

The inner cavity 13 is provided with a water mixing part 2, the water mixing part 2 divides the inner cavity 13 into a first cavity 131 and a second cavity 132 along the axial direction of the opening 141, and an overflowing channel 21 is arranged between the first cavity 131 and the second cavity 132. The water inlet 11 and the water outlet 12 are arranged on the wall of the first cavity 131, the water outlet 12 is communicated with the first cavity 131, and the opening 141 is communicated with the second cavity 132; a drainage tube 3 is arranged in the inner cavity 13, the inlet end of the drainage tube 3 is communicated with the water inlet 11, and the outlet end of the drainage tube 3 is communicated with the second cavity 132; the water flowing to the water inlet 11 flows to the second chamber 132 through the draft tube 3, and then flows to the first chamber 131 through the overflow channel 21, and then flows out from the water outlet 12, i.e. the draft tube 3, the second chamber 132 and the overflow channel 21 form the axial deflection channel, and the axial deflection channel is approximately U-shaped.

In this embodiment, the flow passage 21 is disposed on the water mixing member 2, specifically, on a partition plate 24 of the water mixing member 2 described below. Of course, the flow passage 21 may alternatively be provided on the side wall of the inner cavity 13 or between the side wall of the inner cavity 13 and the water mixing element 2, as long as it is capable of communicating the first chamber 131 and the second chamber 132.

In this embodiment, the water inlet 11 is disposed on the bottom wall of the main body 14, the axes of the water inlet 11 and the opening 141 are parallel or coincident with each other, the drainage tube 3 extends along the axial direction of the water inlet 11, the water mixing member 2 is provided with a through hole 22 for the drainage tube 3 to pass through, as shown in fig. 6 and 7, and the through hole 22 is disposed in the center of the water mixing member 2.

In the present embodiment, the baffle passage further includes a radial baffle passage 23 having a baffle in a radial direction of the opening 141. In particular, the mixing element 2 is provided with an annular groove 23 on one side of the first chamber 131, the annular groove 23 forming an annular radial deflection channel 23. The annular groove 23 is provided with a water blocking part 231, the bottom wall or the side wall of the annular groove 23 on one side of the water blocking part 231 is provided with an inlet 232 of a radial deflection channel, the bottom wall or the side wall of the annular groove 23 on the other side of the water blocking part 231 is provided with an outlet 233 of the radial deflection channel, the inlet 232 of the radial deflection channel is communicated with the overflowing channel 21, the outlet 233 of the radial deflection channel corresponds to the position of the water outlet 12, and water flowing into the first cavity 131 flows out of the water outlet 12 after flowing along the radial deflection channel 23. Specifically, as shown in fig. 7, in the present embodiment, the inlet 232 of the radial deflecting passage is provided on the bottom wall of the annular groove 23 on one side of the water blocking portion 231, and the outlet 233 of the radial deflecting passage is provided on the side wall of the annular groove 23 on the other side of the water blocking portion 231.

In this embodiment, the central hole surrounded by the annular groove 23 forms the through hole 22, so that the whole structure is more compact.

As shown in fig. 6 and 7, in the present embodiment, the water mixing element 2 is a cylindrical structure with two open ends, the water mixing element 2 is provided with a partition plate 24 along a radial direction, the partition plate 24 divides the inner cavity 13 of the water mixing element 2 into an inlet cavity and an outlet cavity, the inlet cavity is located in the second cavity 132, the air inlet 10 is communicated with the second cavity 132, and the outlet cavity is located in the first cavity 131; the partition plate 24 is provided with a flow passage 21 and a through hole 22 for the drainage tube 3 to pass through. In this embodiment, the annular groove 23 is located in the water outlet cavity, that is, the radial deflection channel 23 is located in the water outlet cavity, and since the radial deflection channel 23 is annular, the length of the flow path of the radial deflection channel 23 is greater than the linear distance between the water inlet 11 and the water outlet 12. Of course, the radial baffle channels 23 may also have other curved or bent shapes, such as an S-shape or a V-shape, instead of a circular shape. In other embodiments, it is also possible to provide a curved or bent radial baffle channel 23 in the inlet chamber, or to provide a curved or bent radial baffle channel 23 in both the inlet chamber and the outlet chamber.

In this embodiment, the inlet 11 is located on the bottom wall of the main body 14, the outlet 12 is located on the side wall of the main body 14, the inlet 10 is located on the gland 15, and the radial baffle 23 surrounds the inlet 11.

In this embodiment, the water mixing member 2 and the anti-siphon body 1 are formed separately, and the water mixing member 2 is separately manufactured and then installed in the anti-siphon body 1. In other embodiments, the mixer 2 and the anti-siphon body 1 may be formed integrally.

In this embodiment, the air inlet 10 is provided on the gland 15; an anti-siphon pad 4 is further disposed in the second chamber 132, the anti-siphon pad 4 is movable between the air inlet 10 and the outlet end of the drainage tube 3, and when the water inlet 11 is filled with water, the anti-siphon pad 4 is movable under the pressure of the water flowing out of the drainage tube 3 to a first position for opening the outlet end of the drainage tube 3 and closing the air inlet 10. When the water inlet 11 stops, the anti-siphon pad 4 is reset to the second position closing the outlet end of the draft tube 3 and opening the air inlet 10. By providing the anti-siphon pad 4, the air inlet 10 can be closed when the drainage tube 3 is filled with water, thereby preventing the water from flowing out of the air inlet 10. Of course, in other embodiments, the anti-siphon pad 4 may be replaced by a one-way valve, specifically, the one-way valve is disposed at the air inlet 10, and the one-way valve closes the air inlet 10 under the action of the water pressure in the second chamber 132 so as to prevent the water from flowing out of the air inlet 10, and opens the air inlet 10 when the water pressure in the second chamber 132 is insufficient or when a negative pressure is formed in the second chamber 132 so as to allow the external air to enter from the air inlet 10, so as to achieve the anti-siphon effect on the water path.

The embodiment gets into the rivers of preventing siphon body 1 and carries out axial baffling under the effect of mixing water 2, can satisfy under the prerequisite of abundant muddy water, reduce the requirement to the radial dimension of the inner chamber of preventing siphon body 1 greatly, the radial dimension of preventing siphon body 1 can design littleer to can reduce the rivers of inner chamber to the water pressure that gland 15 was applyed, thereby make being connected between gland 15 and the main part 14 more reliable.

Preferably, in this embodiment, as shown in fig. 5, a plurality of water-disturbing ribs 15 may be further disposed on the radial baffle channel 23 at intervals along the water flow direction, so that the water-mixing effect is better through the disturbing effect of the water-disturbing ribs 25 on the water flow.

In this embodiment, the axial baffle channels are located upstream of the radial baffle channels. Of course, in other embodiments, the axial deflection channels may be located downstream of the radial deflection channels, or the axial deflection channels may be located upstream and downstream of the radial deflection channels, respectively.

The working process of the utility model is roughly as follows:

as shown in fig. 2, which is the state when the water inlet 11 is not filled with water, the anti-siphon pad 4 is in a falling state under the gravity and closes the outlet end of the draft tube 3, and the anti-siphon pad 4 opens the air inlet 10;

as shown in fig. 3 to 5, in this case, in the state when the water inlet 11 is filled with water, the water flow of the water inlet 11 flows into the drainage tube 3 and pushes up the anti-siphon pad 4, so that the anti-siphon pad 4 opens the outlet end of the drainage tube 3 and closes the air inlet 10, and the water flow flows into the first cavity 131 of the anti-siphon body 1 and the water inlet cavity of the water mixing member 2 from the outlet end of the drainage tube 3, as shown by the solid line with arrows in fig. 3; then, the water flow entering the water inlet chamber of the water mixing member 2 flows downwards into the second chamber 132 of the anti-siphon body 1 and the water outlet chamber of the water mixing member 2 through the overflowing channel 21, as shown in fig. 4; the water flow entering the water outlet cavity of the water mixing member 2 flows along the annular radial baffling channel 23 formed by the annular groove 23 and then flows out of the water outlet 12, as shown by the dotted line with the arrow in fig. 4.

When the water inlet 11 stops the water inflow, the anti-siphon pad 4 falls down by gravity and closes the outlet end of the draft tube 3 and opens the air inlet 10, returning to the initial state shown in fig. 2.

In addition, the utility model also provides an intelligent closestool (not shown in the figure), which comprises an intelligent cover plate (not shown in the figure), wherein the intelligent cover plate is provided with the instant heating type heater 5, the intelligent cover plate is also provided with any one anti-siphon structure, and the anti-siphon structure is arranged at the downstream of the heating cavity of the instant heating type heater 5.

Specifically, in the present embodiment, the tankless heater 5 includes a body 51 of the tankless heater and a heating element 52 disposed in the body 51 of the tankless heater, and the heating element 52 may be a heating pipe. The anti-siphon body 1 and the body 51 of the instant heating type heater are integrally formed, or alternatively, the anti-siphon body 1 and the body 51 of the instant heating type heater are connected through a communicating pipe.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (13)

1. The utility model provides an anti-siphon structure, locates in the water route, anti-siphon structure is including anti-siphon body, anti-siphon body have the inner chamber, with water inlet, delivery port and the air inlet that the inner chamber is linked together respectively, water inlet and delivery port respectively with the water route is linked together, air inlet intercommunication external air with the inner chamber, a serial communication port, anti-siphon body includes that one end open-ended cavity main part connects with the lid to be fixed open-ended gland, main part and gland lid connect and form the inner chamber, be formed with the intercommunication in the inner chamber the water inlet the baffling passageway of delivery port and air inlet, the baffling passageway includes the axial baffling passageway that has the baffling on the open-ended axial direction, the water warp of water inlet by behind the axial baffling passageway the delivery port flows.

2. The anti-siphon structure according to claim 1, characterized in that a water mixing member is provided in the inner chamber, the water mixing member divides the inner chamber into a first chamber and a second chamber along the axial direction of the opening, and an overflow passage is provided between the first chamber and the second chamber; the water inlet and the water outlet are arranged on the wall of the first cavity, the water outlet is communicated with the first cavity, and the opening is communicated with the second cavity; a drainage tube is arranged in the inner cavity, the inlet end of the drainage tube is communicated with the water inlet, and the outlet end of the drainage tube is communicated with the second cavity; the water flowing to the water inlet flows to the second cavity through the drainage tube and then flows to the first cavity through the overflowing channel and then flows out of the water outlet, namely the drainage tube, the second cavity and the overflowing channel form the axial baffling channel.

3. The anti-siphon structure according to claim 2, characterized in that the overflow channel is provided on the water mixing member or on the side wall of the inner chamber or between the side wall of the inner chamber and the water mixing member.

4. The anti-siphon structure according to claim 2, characterized in that the water inlet is arranged on the bottom wall of the main body, the axes of the water inlet and the opening are parallel or coincident, the drainage tube extends along the axial direction of the water inlet, and the water mixing element is provided with a through hole for the drainage tube to penetrate through.

5. The anti-siphon structure according to claim 2, characterized in that the deflection channel further comprises a radial deflection channel having deflection in the radial direction of the opening, the water mixing member is located on one side of the first chamber and provided with an annular groove, the annular groove is annular, the radial deflection channel is provided with a water blocking portion, an inlet of the radial deflection channel is provided on the bottom wall or the side wall of the annular groove on one side of the water blocking portion, an outlet of the radial deflection channel is provided on the bottom wall or the side wall of the annular groove on the other side of the water blocking portion, the inlet of the radial deflection channel is communicated with the overflow channel, the outlet of the radial deflection channel corresponds to the position of the water outlet, and the water flowing into the first chamber flows along the radial deflection channel and then flows out from the water outlet.

6. The anti-siphon structure according to claim 2, characterized in that the water mixing member is a cylindrical structure with two open ends, the water mixing member is provided with a partition plate along a radial direction, the partition plate divides an inner cavity of the water mixing member into a water inlet cavity and a water outlet cavity, the water inlet cavity is located in the second cavity, the air inlet is communicated with the second cavity, and the water outlet cavity is located in the first cavity; the partition board is provided with the flow passage and a perforation for the drainage tube to penetrate through.

7. The anti-siphon structure according to claim 6, characterized in that a radial baffling channel which is bent or curved in a radial direction of the opening is arranged in the water inlet chamber and/or the water outlet chamber, and the length of a flow path of the radial baffling channel is larger than a straight distance between the water inlet and the water outlet.

8. The anti-siphon structure according to claim 7, wherein the radial baffle channel is provided with a plurality of water disturbance ribs at intervals along the water flow direction.

9. The anti-siphon structure according to claim 2, characterized in that the water inlet is located at the bottom wall of the main body, the water outlet is located at the side wall of the main body, and the air inlet is located at the press cover; the water mixing piece and the anti-siphon body are integrally formed or separately formed.

10. The anti-siphon structure according to claim 1, wherein the baffle passage further comprises a radial baffle passage having a baffle in a radial direction of the opening, and the axial baffle passage is located upstream and/or downstream of the radial baffle passage.

11. The anti-siphon structure, according to claim 10, characterized in that the radial baffling channel is S-shaped or V-shaped or annular and the axial baffling channel is U-shaped.

12. The anti-siphon structure according to any one of claims 2 to 9, characterized in that the air inlet is provided on the press cover; an anti-siphon pad is further arranged in the second cavity, the anti-siphon pad moves between the air inlet and the outlet end of the drainage tube, when water enters from the water inlet, the anti-siphon pad moves to a first position where the outlet end of the drainage tube is opened and the air inlet is closed under the action of the pressure of water flow flowing out of the drainage tube, and when the water stops from the water inlet, the anti-siphon pad resets to a second position where the outlet end of the drainage tube is closed and the air inlet is opened; or a one-way valve is arranged at the air inlet, and closes the air inlet under the action of water pressure in the second cavity and opens the air inlet when the water pressure in the second cavity is insufficient or negative pressure is formed in the second cavity.

13. An intelligent closestool, including intelligent apron, intelligent apron is equipped with instant heating type heater, its characterized in that, still be equipped with the anti-siphon structure of any one of claims 1 to 12 on the intelligent apron, the anti-siphon structure is located the low reaches in the heating chamber of instant heating type heater.

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