CN112963584A

CN112963584A - Kitchen faucet

Info

Publication number: CN112963584A
Application number: CN202110341637.7A
Authority: CN
Inventors: 何永强; 叶贤清; 缪巧明; 洪鸿行; 祝传宝; 王苑欣; 李永煌
Original assignee: Xiamen Lota International Co Ltd
Current assignee: Xiamen Lota International Co Ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-06-15

Abstract

The invention provides a kitchen faucet comprising: the water outlet device comprises a seat body, a support and a water outlet group. The seat body is provided with a waterway pipeline and a valve group. The bracket is arranged at the water outlet end of the seat body. The water outlet group comprises a first water outlet part and a second water outlet part which are arranged independently. The first water outlet part is constructed into a handheld shower head structure, the second water outlet part is arranged on the support, and the water outlet area of the second water outlet part is larger than that of the first water outlet part. The first water outlet piece has a free state which can be held and pulled by a user and a limiting state which can be limited by the bracket to mutually avoid the second water outlet piece and discharge water in the same direction. The waterway pipeline is controlled by the induction group to switch water to one of the first water outlet part and the second water outlet part. The bracket is used for forming stable support of each water outlet piece, so that the operation is facilitated, and the using effect is remarkable. The kitchen faucet is simple in structure, the newly-added support structure can be matched with and connected with the base of the faucet into a whole, and the overall attractiveness of the faucet is improved.

Description

Kitchen faucet

Technical Field

The invention relates to the technical field of faucets, in particular to a kitchen faucet.

Background

Kitchen faucets are indispensable water supply equipment in kitchens, and from only providing tap water at first to the cold and hot water mixing function of the kitchen faucets, the functions of the kitchen faucets are increasingly rich and perfect.

Most of the existing kitchen faucets adopt a fixed structure, the water supply is limited within the range of a sink, and cold and hot tap water can be generally or only output. With the increasing variety of kitchen appliances and the different demands for kitchen water, the single water outlet mode of the existing kitchen faucet can not meet the use requirements of users.

In addition, the structure of the existing kitchen faucet is complex and the supporting configuration is inconvenient, and the whole faucet structure is not attractive, so that the kitchen faucet is not beneficial to daily use and maintenance. In addition, water outlet is generally controlled by a mechanical switch in the prior art, and certain inconvenience exists when a user uses the water outlet device.

It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

Disclosure of Invention

Accordingly, the present invention is directed to a kitchen faucet that solves the above problems.

The invention adopts the following scheme:

the application provides a kitchen faucet, includes: the water outlet group is arranged on the base; the seat body is provided with a waterway pipeline and a valve group for controlling the water outlet of the pipeline; the bracket is arranged at one water outlet end of the seat body; the water outlet group comprises a first water outlet part and a second water outlet part which are arranged independently; the first water outlet part is constructed into a handheld shower head structure, the second water outlet part is arranged on the bracket, and the water outlet area of the second water outlet part is larger than that of the first water outlet part; the first water outlet piece has a free state which can be held and pulled by a user and a limiting state which can be limited by the bracket to mutually avoid the second water outlet piece and discharge water in the same direction; the waterway pipeline is controlled by the induction group to switch water to one of the first water outlet part and the second water outlet part.

As a further improvement, the bracket is arranged as a plate-shaped bracket body and is transversely arranged on one side of the top end part of the seat body; the support is internally provided with an installation cavity capable of accommodating a second water outlet part, and the water outlet part of the second water outlet part is embedded at the bottom end side of the support and is approximately flush with the bottom end surface of the support.

As a further improvement, the water outlet part of the second water outlet member is a rectangular spray head, and the water outlet part of the first water outlet member is a columnar spray head.

As a further improvement, one end of the bracket is rotatably embedded in the top end part of the seat body, and the other end of the bracket is provided with a through hole capable of clamping and accommodating the first water outlet piece; the first water outlet piece is communicated to the water outlet end of the water channel pipeline through the faucet spray pipe and is arranged in the through hole in a clamping mode in the water outlet portion arranged at one end of the faucet spray pipe in an operable mode, so that the water outlet portion of the first water outlet piece can discharge water to the outside of the support along the direction of the through hole.

As a further improvement, the faucet spout is disposed between the seat body and the water outlet portion of the first water outlet member and comprises an elongated member formed of a shape memory alloy material or a flexible hose member.

As a further improvement, a pressing switch is arranged on one side of the water outlet part of the first water outlet member exposed outside the through hole, and the pressing switch is controlled by external force to lock the water outlet part and the through hole at an initial position and release the fastening limit at a pressing position.

As a further improvement, the sensing set comprises a sensing window arranged at the end face of the bracket close to the user side, the sensing window is electrically connected with the control circuit, and the control circuit performs the switching operation of selecting the water outlet by triggering the sensing window.

As a further improvement, the waterway pipeline comprises a cold water inlet pipe, a hot water inlet pipe and a mixed water inlet pipe; the mixed water inlet pipe can converge the rivers of cold inlet tube, hot inlet tube according to required mixture and enter and hold or the end of intaking of second play water spare until carrying first play water spare.

As a further improvement, the mixed water inlet pipe controls the water outlet of the water inlet end of the first water outlet piece or the water outlet of the water inlet end of the second water outlet piece by switching water paths; the switching waterway comprises a first waterway and a second waterway which are respectively provided with electromagnetic valves, the electromagnetic valves are electrically connected with the control circuit, the control circuit is controlled by the induction window to trigger only one electromagnetic valve to be in an open state under one induction, and trigger only the other electromagnetic valve to be in an open state under the next induction.

As a further improvement, the valve set comprises a switch valve core embedded and installed at the side, close to the user, of the seat body; a handle is fixedly arranged on the switch valve core, and a valve core gland is arranged between the handle and the switch valve core; the switch valve core is assembled in the seat body through the valve core seat, the water outlet end of the cold water inlet pipe and the water outlet end of the hot water inlet pipe are respectively communicated to the switch valve core, and the switch valve core is communicated with the water inlet end of the mixed water inlet pipe.

Further features of the present invention will become apparent from the following description of exemplary embodiments (with reference to the attached drawings).

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a partially disassembled schematic view of a kitchen faucet of an embodiment of the present invention;

FIG. 2 is a schematic structural view of the stand and the water outlet group of FIG. 1;

FIG. 3 is a cross-sectional view of a switched waterway of a kitchen faucet of an embodiment of the present invention, wherein arrows indicate the flow direction of mixed water;

FIG. 4 is a cross-sectional view of the water from FIG. 3 switching the first waterway to the second waterway;

fig. 5 is a schematic diagram of a control circuit of the kitchen faucet according to an embodiment of the present invention.

Icon:

1-a seat body; 2-a scaffold; 21-a through hole; 3-water outlet group; 31-a first water outlet member; 32-a second water outlet member; 33-faucet spout; 34-a push switch; 3A-a water outlet part; 3B-a water outlet part; 4-a waterway pipeline; 41-cold water inlet pipe; 42-hot water inlet pipe; 43-mixed water inlet pipe; 44-switching water circuit; 441-a first waterway; 442-a second waterway; 45-electromagnetic valve; 5-valve group; 51-a switch valve core; 52-a handle; 53-valve core gland; 54-valve core seat; 6-induction group; 7-control circuit.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

With reference to fig. 1 to 5, the present embodiment provides a kitchen faucet including: seat body 1, support 2 and play water group 3. The seat body 1 is provided with a waterway pipeline 4 and a valve group 5 for controlling the water outlet of the pipeline. The bracket 2 is arranged at the water outlet end of the seat body 1. The water outlet group 3 includes a first water outlet member 31 and a second water outlet member 32 which are provided independently of each other. The first water outlet member 31 is constructed in a hand shower structure, the second water outlet member 32 is disposed on the support 2, and a water outlet area of the second water outlet member 32 is larger than that of the first water outlet member 31. The first water outlet member 31 has a free state capable of being held and pulled by a user and a limit state capable of being limited by the bracket 2 to mutually avoid the second water outlet member 32 and to discharge water in the same direction. The waterway pipeline 4 is controlled by the sensing set 6 to switch the water to one of the first water outlet member 31 and the second water outlet member 32.

In the above embodiment, the bracket 2 is used to form a stable support for each water outlet member, which is beneficial to operation and has a significant use effect. Wherein, the first water outlet member 31 for small-area water outlet is a handheld shower head structure, which can be held by a user in a free state to be pulled to a set threshold value for water supply, so that the kitchen water is more flexible and efficient. In addition, the water outlet device can be stably limited on the bracket 2 when in a limiting state, and water is discharged from the same direction as the second water outlet member 32 which is arranged at the side of the bracket 2 and is used by a user, and the water channel 44 is switched under the triggering of the induction group 6 to selectively perform the water discharging of only the first water outlet member 31 or the second water outlet member 32, so that the convenience of water discharging control is improved. The second play water part 32 of large tracts of land play water is better to be favorable to the great scene of water demand, for example when washing melon and fruit vegetables or quick and large tracts of land wash, two play water parts are to different use scenes switch over the use, have increased the variety that supplies water. The kitchen faucet is simple in structure, the newly-added support 2 can be matched with and connected with the base body 1 of the faucet into a whole, and the overall attractiveness of the faucet is improved.

In one embodiment, the stand 2 is configured as a plate-shaped frame body and is transversely arranged on one side of the top end part of the seat body 1. The bracket 2 is internally provided with an installation cavity capable of accommodating the second water outlet piece 32, and the water outlet part 3B of the second water outlet piece 32 is embedded at the bottom end side of the bracket 2 and is approximately flush with the bottom end surface of the bracket 2. It should be mentioned that, one side of the bottom end of the seat body 1 is disposed on the external bathing platform, and part of the waterway pipeline 4 is inserted into the platform and accommodated in the seat body 1 to supply each water outlet member for water outlet.

Referring to fig. 2, preferably, the water outlet portion 3B of the second water outlet member 32 is configured as a rectangular shower head, and the water outlet portion 3A of the first water outlet member 31 is configured as a columnar shower head. Wherein, the second water outlet member 32 in a column shape is beneficial to being drawn out by a user at the side of the bracket 2 or being convenient for being fixed with the bracket 2 in a limiting way, and the small area is more beneficial to high water pressure washing. And the rectangular spray header is used for discharging water from the side of the bracket 2 in a large area, the water outlet part 3B of the spray header is embedded in the bottom end side of the bracket 2 and is flush with the bottom end surface of the bracket 2, on one hand, the bracket 2 is ensured to be integrally nested and matched with the second water outlet part 32, and the large-area water discharging use is directly carried out on the bottom end surface of the bracket 2, on the other hand, the bracket 2 and the water outlet part 3B are arranged in parallel, so that the integral appearance is attractive, and the manufacture and the use are convenient.

In one embodiment, specifically, one end of the bracket 2 is rotatably embedded in the top end portion of the seat 1, and the other end thereof is opened with a through hole 21 capable of engaging and receiving the first water outlet member 31. The first water outlet member 31 is connected to the water outlet end of the water channel pipe 4 through the faucet spout 34, and is operatively engaged with the through hole 21 at the water outlet portion 3A disposed at one end of the faucet spout 34, such that the water outlet portion 3A can be discharged to the outside of the bracket 2 along the through hole 21. Therefore, the rotatable bracket 2 arranged on the seat body 1 can drive each water outlet piece to flexibly rotate to different water using positions, and the water outlet device is more convenient and flexible to use. Particularly, the through hole 21 is embedded with the water outlet part 3A, and the water outlet part 3A is accommodated in the through hole 21, so that the protrusion of the water outlet part is avoided from being arranged outside the bottom end surface of the bracket 2, the protection of the water outlet part 3A is facilitated, and the water outlet use is ensured to be more convenient.

It should be noted that the faucet spout 34 is disposed between the housing 1 and the outlet portion 3A of the first outlet member 31, and comprises an elongated member formed of a shape memory alloy material or a flexible hose member.

Wherein the selected elongated member is formed of a shape memory alloy material and is set to a predetermined initial shape (e.g., corresponding to the initial position of faucet spout 34 and first spout 31 in the rest position). Which can be deformed into a shape other than the predetermined shape when a user applies force to the faucet spout 34 or the first spout 31, and then return to its original shape after being released, so that the faucet spout 34 returns to the rest position without using any holder, docking station, retractor or manual repositioning by the user. It is to be mentioned that a shape memory alloy material is understood to be a pseudo-elastic alloy that can be set to a desired initial shape when heated to a transition temperature. The transition temperature is determined by the shape memory alloy utilized. When the shape memory alloy is below its transition temperature, the shape memory alloy has a low yield strength and can be easily deformed into a new shape and then return to its original shape when the spout is released without further action by the user.

Wherein, in another embodiment, a flexible hose member is selected to construct the faucet spout 34. The faucet spout 34 with a flexible structure deforms after being stressed, and cannot restore after the acting force is lost, so that the faucet spout 34 and the first water outlet member 31 can be always kept at a required position after being pulled by a user without continuous action of external force, and the hands of the user are liberated.

It should be noted that, the different types of structures selected for the faucet spout 34 can satisfy the requirement that the first water outlet member 31 is flexibly moved to the through hole 21 of the bracket 2 for limiting and fixing. In addition, the bracket 2 is disposed on the base 1 in a horizontal configuration manner, one end of the bracket is in sleeved fit with the top end of the base 1, and the other end of the bracket can be used for fastening and fixing the first water outlet member 31, so that the kitchen faucet is approximately in a regular enclosed structure, extends (such as the base 1) and bends (such as the first water outlet member 31 and the faucet spout 34 thereof) around the bracket 2 and along two ends thereof.

In one embodiment, the water outlet portion 3A of the first water outlet member 31 is provided with a push switch on a side exposed outside the through hole 21. The push switch is controlled by external force to lock the water outlet part 3A and the through hole 21 at the initial position and release the fastening limit at the push position. The push switch can be linked with a locking piece (not shown) arranged on the first water outlet piece 31, the locking piece is arranged on the outer side of the first water outlet piece 31 in an elastic mode and located in an area where the locking piece is accommodated in the through hole 21, so that the locking piece can be pressed and triggered under the linkage of the push switch, the locking piece is in a locking state that the protrusion of the locking piece is elastically pressed in the through hole 21, and the locking piece is movably switched to an unlocking state that the locking piece is separated from the through hole 21. The structure of the locking element is the prior art, and is not limited herein.

Referring to fig. 1, 3, 4 and 5, in one embodiment, the sensing set 6 includes a sensing window disposed at an end surface of the bracket 2 near the user side. The induction window is electrically connected with the control circuit 7, and the control circuit 7 can carry out the switching operation of selecting water by triggering the induction window. Therefore, the sensing window on the side of the bracket 2 can facilitate receiving the trigger information of the user, and further switch the waterway 44 to the first water outlet member 31 or the second water outlet member 32 through the control circuit 7. The water channel 4 includes a cold water inlet pipe 41, a hot water inlet pipe 42, and a mixed water inlet pipe 43. The mixed water inlet pipe 43 can collect the water flows of the cold water inlet pipe 41 and the hot water inlet pipe 42 according to the required mixing until the water flows are conveyed to the water inlet end of the first water outlet member 31 or the water inlet end of the second water outlet member 32 so as to provide the required warm water to the water outlet part.

Specifically, the mixed water inlet pipe 43 controls the water outlet from the water inlet end of the first water outlet member 31 or the water outlet from the water inlet end of the second water outlet member 32 by switching the water path 44. The switching water path 44 includes a first water path 441 and a second water path 442 respectively configured with the electromagnetic valves 45, the two electromagnetic valves 45 are electrically connected with the control circuit 7, and the control circuit 7 is controlled by the sensing window to trigger only one electromagnetic valve 45 to be in an open state under one sensing and trigger only the other electromagnetic valve 45 to be in an open state under the next sensing. The first water channel 441 is communicated with the first water outlet member 31, and the second water channel 442 is communicated with the second water outlet member 32.

It should be mentioned that, the sensing window is based on the infrared reflection principle, when the hand of human body is placed in the infrared region of the sensing window, the infrared ray emitted from the infrared ray emission tube is reflected to the infrared ray receiving tube due to the shielding of the hand of human body, the signal processed by the microcomputer in the circuit sends a pulse to the electromagnetic valve 45, and the electromagnetic valve 45 receives the pulse and opens the valve core according to the appointed instruction to control one of the water channels to discharge water. Unlike the conventional inductive faucet, the pulse signal can open one of the two solenoid valves 45, and the other solenoid valve 45 is linked with the previous solenoid valve 45 to achieve an open/close state. When the hand of the human body enters the infrared sensing range again, the provided pulse signal is used for opening another electromagnetic valve 45 again, and the electromagnetic valve 45 which is originally opened is linked to be in a closed state, so that water is discharged by only one waterway, and the waterway switching is completed.

It should be noted that, the Micro Control Unit (MCU) in the control circuit 7 sequentially processes the alternate trigger signals (generated by the user triggering the sensing window for multiple times) into different pulses (only two pulses) and transmits the different pulses to the corresponding solenoid valves 45, so that the solenoid valves 45 can be opened by selecting one of the two pulses, and the two solenoid valves 45 can be opened and closed by mechanical switch linkage or electrical switch linkage, which is not described herein again.

The valve assembly 5 includes a switch valve body 51 fitted to the seat 1 on the user side. A handle 52 is fixedly mounted on the switch valve core 51, and a valve core gland 53 is further arranged between the handle 52 and the switch valve core 51. Wherein, the switch valve core 51 is assembled in the seat body 1 through the valve core seat 54, and the water outlet end of the cold water inlet pipe 41 and the water outlet end of the hot water inlet pipe 42 are respectively communicated to the switch valve core 51, and the switch valve core 51 is communicated with the water inlet end of the mixed water inlet pipe 43. It should be noted that the flow sequence of the cold water/hot water in the water channel 4 is as follows: cold inlet pipe 41/hot inlet pipe 42, mixed water inlet pipe 43, switching water path 44, water outlet member and its water outlet portion. Thus, the valve set 5 is disposed at the joint section of the cold/hot water inlet pipe 41/42 and the mixed water inlet pipe 43 to perform cold/hot mixing of water flow in the valve core, and the water flow with a desired temperature is rotated to the water outlet member by the handle 52.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention.

Claims

1. A kitchen faucet, comprising:

the seat body is provided with a waterway pipeline and a valve group for controlling the water outlet of the pipeline;

the bracket is arranged at one water outlet end of the seat body;

the water outlet group comprises a first water outlet piece and a second water outlet piece which are arranged independently; the first water outlet part is constructed into a handheld shower head structure, the second water outlet part is arranged on the bracket, and the water outlet area of the second water outlet part is larger than that of the first water outlet part;

the first water outlet piece has a free state which can be held and pulled by a user and a limiting state which can be limited by the bracket to mutually avoid the second water outlet piece and discharge water in the same direction; the waterway pipeline is controlled by the induction group to switch water to one of the first water outlet part and the second water outlet part.

2. The kitchen faucet of claim 1, wherein the bracket is configured as a plate-like frame and disposed laterally on a side of a top end portion of the housing; the support is internally provided with an installation cavity capable of accommodating a second water outlet part, and the water outlet part of the second water outlet part is embedded at the bottom end side of the support and is approximately flush with the bottom end surface of the support.

3. The kitchen faucet of claim 2, wherein the water outlet portion of the second water outlet member is configured as a rectangular shower head and the water outlet portion of the first water outlet member is configured as a cylindrical shower head.

4. The kitchen faucet of claim 3, wherein one end of the bracket is rotatably nested in the top end portion of the seat body, and the other end of the bracket is provided with a through hole capable of clamping and accommodating the first water outlet member; the first water outlet piece is communicated to the water outlet end of the water channel pipeline through the faucet spray pipe and is arranged in the through hole in a clamping mode in the water outlet portion arranged at one end of the faucet spray pipe in an operable mode, so that the water outlet portion of the first water outlet piece can discharge water to the outside of the support along the direction of the through hole.

5. The kitchen faucet of claim 4, wherein the faucet spout is disposed between the body and the outlet portion of the first outlet member and comprises an elongated member formed of a shape memory alloy material or a flexible hose member.

6. The kitchen faucet of claim 4, wherein the water outlet portion of the first water outlet member is provided with a push switch at a side exposed outside the through hole, and the push switch is controlled by an external force to lock the water outlet portion and the through hole at an initial position and release a fastening limit therebetween at a push position.

7. The kitchen faucet of claim 1, wherein the sensing assembly includes a sensing window disposed at a user-side end of the bracket, the sensing window being electrically connected to the control circuit, the control circuit being operable to selectively switch the water by activating the sensing window.

8. The kitchen faucet of claim 7, wherein the waterway conduit comprises a cold inlet tube, a hot inlet tube, and a mixed water inlet tube; the mixed water inlet pipe can converge the rivers of cold inlet tube, hot inlet tube according to required mixture and enter and hold or the end of intaking of second play water spare until carrying first play water spare.

9. The kitchen faucet of claim 8, wherein the mixed water inlet tube controls the outlet of only the inlet end of the first water outlet member or the outlet end of the second water outlet member by switching the water path; the switching waterway comprises a first waterway and a second waterway which are respectively provided with electromagnetic valves, the electromagnetic valves are electrically connected with the control circuit, the control circuit is controlled by the induction window to trigger only one electromagnetic valve to be in an open state under one induction, and trigger only the other electromagnetic valve to be in an open state under the next induction.

10. The kitchen faucet of claim 8, wherein the valve assembly includes a switch cartridge that is flush-mounted on a user side of the seat; a handle is fixedly arranged on the switch valve core, and a valve core gland is arranged between the handle and the switch valve core; wherein the content of the first and second substances,

the switch valve core is assembled in the seat body through the valve core seat, the water outlet end of the cold water inlet pipe and the water outlet end of the hot water inlet pipe are respectively communicated to the switch valve core, and the switch valve core is communicated with the water inlet end of the mixed water inlet pipe.