CN220967192U

CN220967192U - Toilet bowl and seat ring thereof

Info

Publication number: CN220967192U
Application number: CN202322480028.7U
Authority: CN
Inventors: 方谊国; 孙海兴; 匡奇峰; 杨栋
Original assignee: Shanghai Kohler Electronics Ltd
Current assignee: Shanghai Kohler Electronics Ltd
Priority date: 2023-06-27
Filing date: 2023-09-12
Publication date: 2024-05-17
Anticipated expiration: 2033-09-12

Abstract

The utility model discloses a toilet and a seat ring thereof, and belongs to the technical field of intelligent toilets. The seat ring includes a seat ring body and a flushing mechanism mounted inside the seat ring body, the flushing mechanism including: the outer sleeve is fixedly connected to the inside of the seat ring body, the rear end of the outer sleeve is provided with a water inlet, and the front end of the outer sleeve is provided with a first opening; the inner sleeve is connected inside the outer sleeve in a sliding way, and a second opening is formed in the front end of the inner sleeve; a nozzle connected to the second opening of the inner sleeve; the water drainage groove is formed in the pipe wall of the part of the outer sleeve, which is in sliding fit with the inner sleeve, and liquid between the outer sleeve and the inner sleeve can be discharged along the water drainage groove. The utility model solves the problem that the existing washing mechanism of the seat ring has more residual cold water.

Description

Toilet bowl and seat ring thereof

The present application is based on and claims priority from patent application number 202321656718.7, application number 2023, month 06, 27, the entire contents of which are incorporated herein by reference.

Technical Field

The utility model relates to the field of toilets, in particular to a toilet with a flushing function and a seat ring thereof.

Background

With the improvement of the life quality of people, intelligent toilets have become very popular in daily life. Intelligent toilets typically have multiple functions of cleaning, heating, sterilizing, etc. Wherein the cleaning function is typically achieved by mounting a flush line inside the seat. The flushing pipeline is communicated with the water tank, the other end of the flushing pipeline is provided with a nozzle, and cleaning liquid in the water tank is sprayed out from the outer sleeve pipeline to the nozzle so as to clean private parts.

In order to improve the spraying effect of the nozzle, the nozzle connected to the flushing pipeline in a telescopic way is generally used for flushing, and the nozzle is controlled to extend from the seat ring to a set position and then is controlled to spray cleaning liquid when the flushing operation is performed. After flushing is completed, the nozzles retract into the seat ring. In order to improve the flushing comfort, the cleaning liquid is usually heated to a proper temperature in advance and then flushed, but the residual part of the cleaning liquid in the flushing pipeline can cause the cleaning liquid in the front flushing stage to be still cold water with lower temperature.

Disclosure of utility model

Based on the above, the present utility model aims to solve the problem that the flushing mechanism of the existing seat ring has more residual cold water.

Aiming at the technical problems, the utility model provides the following technical scheme:

A toilet seat, comprising a seat body and a flushing mechanism mounted inside the seat body, the flushing mechanism comprising: the outer sleeve is fixedly connected to the inside of the seat ring body, the rear end of the outer sleeve is provided with a water inlet, and the front end of the outer sleeve is provided with a first opening; the inner sleeve is connected inside the outer sleeve in a sliding way, and a second opening is formed in the front end of the inner sleeve; a nozzle connected to the second opening of the inner sleeve; the water drainage groove is formed in the pipe wall of the part of the outer sleeve, which is in sliding fit with the inner sleeve, and liquid between the outer sleeve and the inner sleeve can be discharged along the water drainage groove.

In some embodiments of the present utility model, the drainage groove is provided on an inner pipe wall of the outer sleeve near the first opening side; or the drainage groove is arranged on the outer wall of the inner sleeve.

In some embodiments of the present utility model, the outer sleeve is provided with a nozzle cleaning opening in a wall of the tube proximate to the nozzle.

In some embodiments of the present utility model, an end cap is disposed at the rear end of the inner sleeve, the end cap is provided with a communication hole, and the liquid in the outer sleeve enters the inner sleeve through the communication hole of the end cap.

In some embodiments of the present utility model, an elastic restoring element is disposed between the outer sleeve and the wall of the inner sleeve, and acts on the inner sleeve, so that the inner sleeve has a movement tendency approaching to the rear side of the outer sleeve.

In some embodiments of the present utility model, the nozzle includes a nozzle body and a connection sleeve disposed at a rear side of the nozzle body, wherein the nozzle body is provided with a plurality of spray holes, and the connection sleeve is detachably connected to a front end of the inner sleeve.

In some embodiments of the present utility model, at least one clamping protrusion is disposed on an outer wall of the inner sleeve, at least one notch groove is disposed at a rear end of the connecting sleeve, a clamping area matched with the clamping protrusion in shape is disposed on the notch groove, the connecting sleeve is sleeved on the inner sleeve, and the clamping protrusion enters along an opening of the notch groove and is clamped in the clamping area.

In some embodiments of the present utility model, the nozzle body is provided with ribs on a side wall near the front end surface.

In some embodiments of the present utility model, the nozzle further comprises a shutter pivotally connected to a front end of the outer sleeve, and the shutter is located at a position closing the opening of the seat body when the nozzle is located inside the seat body.

The utility model also provides a toilet, which comprises a toilet body and the seat ring, wherein the seat ring is pivotally connected to the toilet body; the water inlet of the distributor and the flushing mechanism are communicated with the nozzle cleaning opening; the distributor comprises a first working position, a second working position and a third working position, wherein when the distributor is in the first working position, the distributor is communicated with the nozzle cleaning opening, and when the distributor is in the second working position and the third working position, the distributor is communicated with the water inlet, wherein the flow of the second working position is smaller than the flow of the third working position.

In some embodiments of the utility model, the dispenser further comprises a fourth operating position, the fourth operating position having a flow rate greater than the flow rate of the third operating position.

In some embodiments of the present utility model, the dispenser includes a first outlet and a second outlet, the first outlet is communicated with a nozzle cleaning port of the flushing mechanism through a first pipeline, and a flow detection device is arranged on the first pipeline; the second outlet is communicated with the water inlet of the flushing mechanism through a second pipeline, and a heating device is arranged on the second pipeline.

Compared with the prior art, the technical scheme of the utility model has the following technical effects:

The toilet bowl and the seat ring thereof provided by the utility model comprise a flushing mechanism, wherein the flushing mechanism comprises an outer sleeve and an inner sleeve which are in sliding fit, the front end of the inner sleeve is connected with a nozzle, and the nozzle is extended and retracted relative to the seat ring body through sliding of the inner sleeve relative to the outer sleeve. The water draining groove is formed in the pipe wall of the part of the outer sleeve and the inner sleeve in sliding fit, when the flushing mechanism performs flushing operation, the inner sleeve is driven to extend out firstly, when the pressure of the water inlet end is smaller, the inner sleeve does not extend out completely, and water stored between the inner sleeve and the outer sleeve can be drained into the toilet through the water draining groove. The problem that the water in the front section of the water spraying is colder due to excessive cold water between the inner sleeve and the outer sleeve is avoided, and the flushing comfort of the toilet is improved.

Drawings

The objects and advantages of the present utility model will be better understood by describing in detail preferred embodiments thereof with reference to the accompanying drawings in which:

FIG. 1 is a schematic view of one embodiment of a seat ring of the present utility model;

FIG. 2 is a cross-sectional view of one embodiment of the race of the present utility model in a nozzle extended state;

FIG. 3 is a cross-sectional view of the flushing mechanism in the seat ring of the present utility model in a first state;

FIG. 4 is a cross-sectional view of the flushing mechanism in the seat ring of the present utility model in a second state;

FIG. 5 is a perspective view of one embodiment of an outer sleeve in a seat insert of the present utility model;

FIG. 6 is a schematic illustration of the mating relationship between the inner sleeve and the nozzle in the seat insert of the present utility model;

fig. 7 is a schematic structural view of a toilet according to an embodiment of the present utility model.

FIG. 8 is a schematic view of a waterway structure of the toilet of the present utility model in a state of a nozzle flushing;

FIG. 9 is a schematic view of a waterway structure of the toilet bowl of the present utility model in a cold water draining state;

fig. 10 is a schematic view of a waterway structure of the toilet of the present utility model in an injecting state.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Fig. 1 shows a specific embodiment of a toilet seat according to the present utility model, which includes: a seat ring body 10 having a receiving cavity, an inner ring wall of the seat ring body 10 being provided with an opening communicating with the receiving cavity; at least one flushing mechanism 20 is mounted within the receiving cavity to perform a flushing function of the seat 100. The seat ring also has the functions of warming, sterilizing and the like, and the seat ring 100 is provided with control buttons 30, so that a user can realize different functions by triggering different control buttons 30. The washing mechanism 20 may be installed in a front cavity of the seat ring body 10 to wash female pudendum, or may be installed in a rear cavity of the seat ring body 10 to wash anus, or may be installed at both front and rear sides of the seat ring body 10. The "front end" of the flushing mechanism 20 and its components of the present utility model refers to the water outlet end near the direction of the water flow in the flushing mechanism, and the "rear end" refers to the water inlet end near the direction of the water flow in the flushing mechanism.

As shown in fig. 2 to 4, the flushing mechanism 20 comprises an outer sleeve 22 fixedly connected to the inner wall of the seat ring body 10, a water inlet 22a is formed at the rear end of the outer sleeve 22, and a first opening is formed at the front end of the outer sleeve 22; an inner sleeve 23 slidably connected to the inside of the outer sleeve 22, wherein a second opening is provided at the front end of the inner sleeve 23; and a nozzle 21 connected to the second opening of the inner sleeve 23, the inner sleeve 23 being slidable along the outer sleeve 22 such that the nozzle 21 can extend and retract relative to the race body 10; when the nozzle 21 is in the extended state, the cleaning solution in the water tank 300 enters the outer sleeve 22 and the inner sleeve 23 through the water inlet 22a of the outer sleeve 22, and finally is sprayed out through the nozzle 21 to clean private parts of a human body.

Wherein, a drainage groove 22b is formed on a part of the pipe wall of the outer sleeve 22 and the inner sleeve 23 in sliding fit, and the liquid between the outer sleeve 22 and the inner sleeve 23 can be discharged along the drainage groove 22 b. When the user activates the control button 30 to flush the flushing mechanism 20, the inner sleeve 23 is driven to extend first, and when the pressure at the water inlet end is small, the inner sleeve 23 is not fully extended yet, and the water stored between the inner sleeve 23 and the outer sleeve 22 can be discharged into the toilet bowl through the water discharge groove 22 b. The problem that the water in the front section of water spraying is colder due to excessive cold water between the inner sleeve and the outer sleeve is avoided.

Specifically, the extension and retraction of the inner sleeve 23 described above may be achieved by driving a driving mechanism, for example, a driving mechanism such as a cylinder, a piston, a motor, or the like. The structure of driving the inner sleeve 23 to extend by water pressure and driving the inner sleeve 23 to reset by the reset piece is shown in the present embodiment.

As shown in fig. 3 and 4, the end portion of the inner sleeve 23 located inside the outer sleeve 22 is connected to an end cap 24, the end cap 24 is provided with a communication hole, and the liquid in the outer sleeve 22 enters the nozzle 21 through the communication hole of the end cap 24. An elastic reset piece 26 is arranged between the outer sleeve 22 and the wall of the inner sleeve 23, and the elastic reset piece 26 acts on the inner sleeve 23 and is suitable for enabling the inner sleeve 23 to have a moving trend close to the rear end of the outer sleeve 22. After the injection of the nozzle 21 is finished, after the liquid amount in the outer sleeve 22 is smaller than the set value, the inner sleeve 23 moves towards the rear end of the outer sleeve 22 under the action of the elastic reset piece 26, so that the nozzle 21 is driven to retract into the accommodating cavity of the seat ring body 10. More specifically, the elastic restoring member 26 is a compression spring, the inside of the outer sleeve 22 is provided with a convex surface for installing the compression spring and a limiting sleeve, one end of the compression spring is abutted to the end surface of the inner sleeve 23, which is close to the end cover 24, and the other end of the compression spring is sleeved on the limiting sleeve and is abutted to the convex surface.

The outer sleeve 22 is provided with a nozzle cleaning opening 22c at a position close to the nozzle 21, the nozzle cleaning opening 22c is communicated with the water tank 300 through a pipeline, and after the operation of the flushing mechanism 20 is finished, that is, when the nozzle 21 is in a non-operating state inside the seat ring body 10, water in the water tank 300 enters the outer sleeve 22 from the nozzle cleaning opening 22c of the outer sleeve 22 by controlling a water channel to flush the outer wall of the nozzle 21, so that the cleanliness of the nozzle 21 can be further improved.

Specifically, the arrangement of the drain grooves 22b is not unique; in one embodiment, as shown in fig. 2-5, the drainage grooves 22b are disposed on the inner wall of the outer sleeve 22 near the first opening side, and the drainage grooves 22b are disposed in two, respectively on the upper and lower sides of the inner wall of the outer sleeve 22. In another embodiment, the drain grooves 22b are provided on the outer wall of the inner sleeve 23. When the inner sleeve 23 slides outwards relative to the outer sleeve 22, the cleaning liquid between the inner sleeve and the outer sleeve can be driven to be discharged.

Specifically, the nozzle 21 is detachably connected to the inner sleeve 23 for the user to remove and clean the nozzle 21. Specifically, the nozzle 21 includes a nozzle body 211 and a connection sleeve 212 disposed at a rear side of the nozzle body 211, wherein a plurality of spray holes 211a are disposed on the nozzle body 211, specifically, the spray holes 211a are disposed on a front end surface of the nozzle body 211, and the connection sleeve 212 is detachably connected to a front end of the inner sleeve 23.

More specifically, as shown in fig. 6, the outer wall of the inner sleeve 23 is provided with at least one clamping protrusion 23a, for example, the clamping protrusion 23a is formed into a cylindrical protrusion structure, the rear end of the connecting sleeve 212 is correspondingly provided with at least one notch groove 212a, the notch groove 212a is provided with a clamping area 212b matched with the clamping protrusion 23a in shape, for example, the tail end of the notch groove 212a is formed into a circular groove body structure matched with the cylindrical protrusion, and the opening width of the notch groove 212a is smaller than the width of the clamping area 212 b.

When the connecting sleeve 212 is sleeved on the outer wall of the inner sleeve 23, the cylindrical clamping protrusion 23a deforms the connecting sleeve 212, so that the opening of the notch groove 212a is enlarged, and finally is clamped in the circular clamping area 212b. When the nozzle 21 is detached, the clamping protrusion 23a presses the groove wall of the notch groove 212a to expand the opening, so that the nozzle 21 is detached.

In order to facilitate the user to disassemble and assemble the nozzle 21, the nozzle main body 211 is provided with ribs on two opposite side walls close to the front end surface; the user may pull the bead side to remove the nozzle 21 or push the bead side inwardly to mount the nozzle 21 on the inner sleeve 23.

As shown in fig. 2-4, the seat 100 further includes a shutter 25 pivotally connected to the front end of the outer sleeve 22, the shutter 25 closing the opening of the seat body 10 when the nozzle 21 is in the retracted state, so as to avoid contact between the nozzle 21 and the outer region of the seat body 10; when the nozzle 21 is controlled to extend outwards, the nozzle 21 acts on the shutter 25, pivoting the shutter 25 away from the opening.

Specifically, in an alternative embodiment, the pivotal position of the shutter 25 is located above the center of gravity of the shutter 25, which allows the shutter 25 to quickly close the opening under its own weight.

The utility model also provides a specific implementation mode of the toilet bowl. As shown in fig. 7, the toilet has a toilet body 200, a water tank 300 at the rear of the upper side of the toilet body 200, and a seat ring 100 pivotally connected to the toilet body 200, and further includes a dispenser 70, the dispenser 70 being disposed inside the water tank 300, the dispenser 70 communicating with the water inlet 22a of the flushing mechanism 20 and the nozzle cleaning port 22 c; specifically, the distributor 70 includes a first working position, a second working position and a third working position, when the distributor 70 is in the first working position, the first outlet 71 of the distributor is communicated with the nozzle cleaning opening 22c, and when the distributor 70 is in the second working position and the third working position, the second outlet 72 of the distributor is communicated with the water inlet 22a, wherein the flow rate of the second working position is smaller than the flow rate of the third working position.

In an alternative embodiment, the dispenser 70 further includes a fourth operating position having a flow rate greater than the flow rate of the third operating position.

Specifically, the first outlet 71 of the dispenser 70 is communicated with the nozzle cleaning opening 22c of the flushing mechanism 20 through a first pipeline 51, and in one embodiment, the first pipeline 51 is provided with a flow detection device 40. The second outlet 72 of the dispenser 70 is in communication with the water inlet 22a of the flushing mechanism 20 via a second conduit 52, and in one embodiment, the second conduit 52 is provided with a heating device 60. In other alternative embodiments, the flow detection device 40 and the heating device 60 may be located on the water inlet line of the dispenser 70.

The working process of the toilet bowl for female flushing comprises the following steps:

S1, controlling the distributor 70 to be positioned at a first working position, and controlling the heating device 60 to be started when the flow rate of the first pipeline 51 is greater than a first set value;

specifically, the control of the dispenser 70 may be based on the user's triggering of the control keypad of the toilet, for example, after the controller obtains the trigger signal of the female flushing button, the controller starts to control the dispenser 70 to enter the first working position; as shown in fig. 8, at this time, the dispenser 70 communicates with the nozzle cleaning port 22c to perform external flushing of the nozzle 21, and when the flow rate of the first pipe 51 is greater than the first set value, the cleaning liquid has entered the inner wall of the outer sleeve 22 along the nozzle cleaning port 22c to flush the outer wall of the nozzle 21, and at this time, the cleaning liquid passing through the second pipe 52 starts to be heated.

S2, controlling the distributor 70 to be located at the second working position, and after keeping the first set time period, controlling the distributor 70 to be located at the third working position.

While the cleaning solution in the second pipeline 52 is heated, the distributor 70 is controlled to be located at the second working position, as shown in fig. 9, the second outlet 72 of the distributor 70 is communicated with the water inlet 22a of the flushing mechanism 20, and because the flow rate of the distributor 70 is low when being located at the second working position, the water pressure in the outer sleeve 22 of the flushing mechanism 20 is insufficient to push the inner sleeve 23 to slide to a set position suitable for spraying, and at the moment, the water flows along the area between the outer sleeve 22 and the inner sleeve 23 in the direction indicated by the arrow in fig. 9 and flows out along the drainage groove 22b, so that the early discharge of the cold water in the flushing mechanism 20 is realized. After maintaining the dispenser 70 in the second operating position for a first set period of time, such as 2 seconds, the cold water in the rinse mechanism 20 is substantially drained. At this time, the dispenser 70 is controlled to be located at the third working position, and as shown in fig. 10, since the flow rate is large when the dispenser 70 is located at the third working position, the water pressure in the outer sleeve 22 entering the flushing mechanism 20 can push the inner sleeve 23 to slide to the set position suitable for spraying, and spraying can be performed at this position.

Further, in an alternative embodiment, after the dispenser 70 is controlled to be located at the third working position and maintained for the second set period of time, the dispenser 70 is controlled to be located at the fourth working position, and the flow rate of the fourth working position of the dispenser 70 is greater than the flow rate of the third working position;

Specifically, when the dispenser 70 is located at the third working position and is kept at the second set time period, for example, 1s, the nozzle 21 located at the proximal end of the inner sleeve 23 is located at the set spraying position, and at this time, the dispenser 70 is controlled to be located at the fourth working position, so that the water pressure entering the flushing mechanism 20 is increased to the set value, so that flushing of the private part of the female is achieved, and flushing comfort and flushing efficiency are improved.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While obvious variations or modifications are contemplated as falling within the scope of the present utility model.

Claims

1. A toilet seat comprising a seat body (10) and a flushing mechanism (20) mounted inside the seat body (10), characterized in that the flushing mechanism (20) comprises:

The outer sleeve (22) is fixedly connected inside the seat ring body (10), a water inlet (22 a) is formed in the rear end of the outer sleeve (22), and a first opening is formed in the front end of the outer sleeve (22);

The inner sleeve (23) is connected inside the outer sleeve (22) in a sliding manner, and a second opening is formed in the front end of the inner sleeve (23);

A nozzle (21) connected to a second opening of the inner sleeve (23);

The part of the pipe wall of the outer sleeve (22) and the inner sleeve (23) in sliding fit is provided with a drainage groove (22 b), and liquid between the outer sleeve (22) and the inner sleeve (23) can be discharged along the drainage groove (22 b).

2. A toilet seat according to claim 1, wherein: the drainage groove (22 b) is arranged on the inner pipe wall of the outer sleeve (22) close to the first opening side; or the drainage groove (22 b) is arranged on the outer wall of the inner sleeve (23).

3. A toilet seat according to claim 1, wherein: the outer sleeve (22) is provided with a nozzle cleaning opening (22 c) on the pipe wall close to the nozzle (21).

4. A toilet seat according to claim 1, wherein: an end cover (24) is arranged at the rear end of the inner sleeve (23), a communication hole is formed in the end cover (24), and liquid in the outer sleeve (22) enters the inner sleeve (23) through the communication hole of the end cover (24).

5. A toilet seat according to claim 1, wherein: an elastic reset piece (26) is arranged between the outer sleeve (22) and the wall of the inner sleeve (23), and the elastic reset piece (26) acts on the inner sleeve (23) and is suitable for enabling the inner sleeve (23) to have a moving trend close to the rear side of the outer sleeve (22).

6. A toilet seat according to claim 1, wherein: the nozzle (21) comprises a nozzle main body (211) and a connecting sleeve (212) positioned at the rear side of the nozzle main body (211), a plurality of spray holes (211 a) are formed in the nozzle main body (211), and the connecting sleeve (212) is detachably connected to the front end of the inner sleeve (23).

7. The toilet seat according to claim 6, wherein: the outer wall of the inner sleeve (23) is provided with at least one clamping bulge (23 a), the rear end of the connecting sleeve (212) is provided with at least one notch groove (212 a), the notch groove (212 a) is provided with a clamping area (212 b) matched with the clamping bulge (23 a) in shape, the connecting sleeve (212) is sleeved on the inner sleeve (23), and the clamping bulge (23 a) enters along the opening of the notch groove (212 a) and is clamped in the clamping area (212 b).

8. The toilet seat according to claim 6, wherein: the nozzle body (211) is provided with ribs on the side wall near the front end face.

9. A toilet bowl, comprising: a toilet body (200) and a seat (100) according to any one of claims 1-8, the seat (100) being pivotally connected to the toilet body (200); the device also comprises a distributor (70), wherein the distributor (70) is communicated with a water inlet (22 a) of the flushing mechanism (20) and a nozzle cleaning port (22 c);

the distributor (70) comprises a first working position, a second working position and a third working position, when the distributor (70) is in the first working position, the distributor is communicated with the nozzle cleaning port (22 c), and when the distributor (70) is in the second working position and the third working position, the distributor is communicated with the water inlet (22 a), wherein the flow rate of the second working position is smaller than that of the third working position.

10. The toilet according to claim 9, wherein the dispenser (70) further comprises a fourth operating position, the fourth operating position having a flow rate greater than the third operating position.

11. The toilet according to claim 9 or 10, characterized in that the dispenser (70) comprises a first outlet (71) and a second outlet (72), the first outlet (71) being in communication with the nozzle cleaning opening (22 c) of the flushing mechanism (20) via a first conduit (51), the first conduit (51) being provided with a flow detection device (40); the second outlet (72) is communicated with the water inlet (22 a) of the flushing mechanism (20) through a second pipeline (52), and a heating device (60) is arranged on the second pipeline (52).