CN115264172B

CN115264172B - Electric heating water tap

Info

Publication number: CN115264172B
Application number: CN202211188984.1A
Authority: CN
Inventors: 王建亮; 杨春光
Original assignee: Shandong Jintis Intelligent Technology Co ltd
Current assignee: Shandong Jintis Intelligent Technology Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-04-18
Anticipated expiration: 2042-09-28
Also published as: CN115264172A

Abstract

The invention relates to the technical field of bathrooms, in particular to an electric heating faucet which comprises a shell, a heating pipe, a control circuit board, a valve core and a handle assembly, wherein the heating pipe, the control circuit board and the valve core are arranged in the shell, the handle assembly is connected with the valve core and comprises a handle, a sealing cover and a guide rod, gears on the handle are sequentially arranged into a hot water gear, a cold water gear and a closing gear, the center of the bottom of the handle is connected with the valve core, the bottom of the handle is downwards protruded to form a pressing block close to the edge, the sealing cover comprises a cover body and a block body, the block body is downwards extended from one side of the cover body, the cover body is fixed at an opening at the upper end of a valve core barrel, a sliding groove penetrates through the cover body and the block body, the guide rod is arranged in the sliding groove, and the guide rod is arranged in the handle assembly.

Description

Electric heating water tap

Technical Field

The invention relates to the technical field of bathrooms, in particular to an electric heating faucet.

Background

In recent years, with the improvement of the living standard of people, the electric heating faucet is deeply favored by consumers since being put on the market, is a small kitchen and bathroom appliance product specially designed for kitchens and washrooms incapable of normally supplying heat, is the best choice for convenient use of hot water in kitchens, dishes and cleaning, washrooms, hair washing, clothes washing and the like, and solves the daily requirement of hot water in family life and public places.

The prior electric heating water tap has the following defects in the using process: 1. the existing electric heating faucet separates water from electricity through an adhesive film arranged inside the faucet, and can trigger a heating pipe to heat under lower water pressure, for example, the existing patent (patent number CN 201721180590.6) discloses an electric heating faucet, and describes the heating principle of the heating pipe: when the gear of the handle switch is adjusted to a hot water gear, water flow is injected into the adhesive film cavity, so that the adhesive film in the adhesive film cavity is subjected to water pressure, the top piece on the adhesive film seat pushes the movable contact piece contacted with the adhesive film seat to move upwards, the movable contact piece moves for a certain stroke and then is contacted with the fixed contact piece, a circuit is conducted after the movable contact piece is contacted with the fixed contact piece, and then the heating pipe heats hot water; however, if the adhesive film is heated by triggering a heating pipe under the condition of too low water pressure due to quality problems, dry burning is easily caused; 2. the volume of the electric heating faucet expands after being frozen in winter, so that the adhesive film is pressed to start the heating pipe to dry and burn, and even a fire disaster is caused; 3. when the electric heating faucet is not closed tightly, the heating pipe can continue to heat, and dry burning can occur due to too low water pressure; 4. when the electric heating faucet is turned off, the residual temperature inside the electric heating faucet is high, and when the electric heating faucet is turned on again in a short time, the water temperature is high, so that the hands can be scalded; 5. the heating pipe in the electric heating faucet is easy to rust and scale on the surface after being contacted with hot water for a long time; 6. the overheating fusing safety switch in the electric heating faucet is fused when the temperature is too high, and needs to be repaired and replaced again.

Disclosure of Invention

The present invention is directed to an electric heating faucet for solving the problems of the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: an electric heating faucet comprises a shell, a heating pipe, a control circuit board, a valve core and a handle assembly, wherein the heating pipe is arranged in the shell, the handle assembly is connected with the valve core, a water inlet channel and a first cavity are formed in the shell, the heating pipe is connected with the control circuit board, the heating pipe is arranged in the first cavity, the shell is provided with a water inlet pipe, a valve core barrel and a water outlet pipe, the water inlet pipe is communicated with the water inlet channel, the valve core barrel is communicated with the first cavity, the valve core barrel is internally provided with the valve core, the upper end of the valve core barrel is opened, the lower end of the valve core barrel is provided with a valve core seat, the valve core seat is provided with a water inlet hole and a water outlet hole, the water inlet hole is communicated with the water inlet channel, the water outlet hole is communicated with the first cavity, the control circuit board is provided with a heating switch, and the heating switch comprises a first conducting strip and a second conducting strip which are used for conducting the control circuit board to be conducted; the handle assembly comprises a handle, a sealing cover and a guide rod, gears on the handle are sequentially set into a hot water gear, a cold water gear and a closing gear, the center of the bottom of the handle is connected with the valve core, the bottom of the handle is close to the edge and protrudes downwards to form a pressing block, the sealing cover comprises a cover body and a block body formed by extending downwards from the edge of one side of the cover body, the cover body is fixed at an opening at the upper end of the valve core cylinder, a sliding groove penetrates through the cover body and the block body from top to bottom, the guide rod is arranged in the sliding groove, the upper end of the guide rod is matched with the pressing block, the lower end of the guide rod is matched with a first conducting strip, when the handle is rotated to be switched to the hot water gear, the pressing block presses the guide rod downwards, and the lower end of the guide rod presses the first conducting strip to close the heating switch.

Preferably, a second cavity is further arranged in the shell, the second cavity is isolated from the first cavity, and the control circuit board is fixed in the second cavity through a fixing piece.

Preferably, the cover body is annular, a fixing column is arranged in the valve core cylinder, and the cover body is fixed on the fixing column through a screw.

Preferably, the lower end of the guide rod is sleeved with a spring.

Preferably, the valve core is arranged on the valve core seat, the valve core comprises a fixed ceramic chip and a movable ceramic chip which are all circular, the fixed ceramic chip, the movable ceramic chip, a valve casing for fixing the relative position between the fixed ceramic chip and the movable ceramic chip and a middle shaft for driving the movable ceramic chip to rotate jointly form the valve core for opening and closing cold water and hot water, the fixed ceramic chip is provided with two through holes, and the two through holes correspond to the water inlet holes and the water outlet holes on the valve core seat one by one; the fixed ceramic chip is positioned between the valve core seat and the movable ceramic chip, the fixed ceramic chip is attached to the valve core seat, the movable ceramic chip is provided with three adjusting holes, each adjusting hole can cover one of the two through holes, the fixed ceramic chip and the movable ceramic chip are installed in the valve shell, and the middle shaft extends to the outside of the valve shell and is connected with the handle.

Preferably, a temperature display screen connected with the control circuit board is embedded in the surface of the shell.

Preferably, a temperature sensing probe is arranged in the water outlet pipe and is connected with the control circuit board.

Preferably, the electric heating faucet further comprises an overheating fusing safety switch and an overheating protection switch which are connected with the heating switch and the heating pipe in series in a circuit, the overheating protection switch is set to be automatically switched off when the water temperature is higher than a first set value, the overheating fusing safety switch is set to be fused when the water temperature is higher than a second set value, and the first set value is lower than the second set value.

Preferably, the casing is the tube-shape, sets up along transversely, and casing lateral wall bottom is equipped with the inlet tube that is used for into water, and casing lateral wall top is equipped with the valve core section of thick bamboo and is used for the outlet pipe of play water.

Preferably, the casing is the tube-shape, along vertical setting, and the casing lower extreme is equipped with the inlet tube that is used for intaking, and the casing lateral wall is equipped with the valve core section of thick bamboo, and the casing upper end is equipped with the outlet pipe that is used for going out water, and the subsides of first cavity inner wall are equipped with a stainless steel sleeve.

Compared with the prior art, the invention has the following advantages:

1. the guide rod is arranged in the handle assembly, and only when the handle is screwed to a hot water stop, the pressing block at the bottom of the handle presses the guide rod downwards to start heating when water enters, so that not only can dry burning be prevented, but also the potential safety hazard of fire caused by the fact that an adhesive film is pressed to start a heating pipe to dry burn due to freezing volume expansion in winter of the existing electric heating faucet is avoided;

2. after a user adjusts the electric heating faucet to a hot water gear, when the electric heating faucet needs to be turned off, the electric heating faucet can be turned off only through a middle cold water gear, waste heat is stored in the electric heating faucet after heating, and water flow cools the interior of the electric heating faucet when the water flow passes through the cold water gear, so that when a conventional use mode is adopted, the electric heating faucet directly passes through the turn-off gear from the hot water gear, a heating pipe of the electric heating faucet is not closed tightly, the electric heating faucet can continue to be heated, dry burning can occur due to too low water pressure, the waste heat is still stored even if the electric heating faucet is turned off, damage is caused to devices in the electric heating faucet, meanwhile, scalding of hands when the electric heating faucet is used again is prevented, and safety in use is guaranteed; meanwhile, the heating pipe can be effectively relieved from rusting easily and forming scale on the surface after being contacted with hot water for a long time;

3. the overheating protection switch can be automatically switched off when the temperature is lower than the fusing temperature, heating is stopped, the fusing of the existing overheating fusing safety switch can be avoided when the water temperature is too high, and the frequency of replacing the overheating fusing safety switch again in the process of returning the electric heating faucet to the factory for maintenance is reduced.

Drawings

The invention is further illustrated by the following examples in conjunction with the drawings.

Fig. 1 is a schematic view of an electric heating faucet according to a first embodiment of the present invention in a closed state;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of the electric heating faucet of FIG. 1 in a heating position;

FIG. 4 is a schematic diagram of a heating circuit of the electrically heated faucet of FIG. 1;

FIG. 5 is a schematic illustration of the fixed and movable tiles of FIG. 1;

FIG. 6 is a schematic view of an electric heating faucet according to a second embodiment of the present invention in a turned-off state;

in the figure: 1. a housing; 2. heating a tube; 101. a first cavity; 102. a second cavity; 103. a stainless steel sleeve; 11. a water inlet pipe; 12. a water outlet pipe; 13. a water inlet channel; 14. a valve cartridge barrel; 141. a water inlet hole; 142. a water outlet hole; 143. fixing a column; 3. a control circuit board; 31. a heating switch; 311. a first conductive sheet; 312. a second conductive sheet; 4. a valve core; 41. determining a ceramic chip; 411. perforating; 42. moving the ceramic sheet; 421. an adjustment hole; 43. a valve housing; 44. a middle shaft; 51. a handle; 511. a pressing block; 52. a sealing cover; 521. a cover body; 522. a block body; 523. a chute; 54. a guide bar; 55. a spring; 61. a temperature display screen; 62. resetting the key; 63. a temperature sensing probe; 64. overheating fusing a safety switch; 65. an overheat protection switch.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings and examples, which are simplified schematic drawings and illustrate only the basic structure of the invention in a schematic manner, and thus show only the constituents relevant to the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. 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 otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 to 5, an electric heating faucet according to a first embodiment of the present invention includes a housing 1, a heating pipe 2 disposed in the housing 1, a control circuit board 3, a valve core 4, and a handle assembly connected to the valve core 4.

Casing 1 is the tube-shape, set up along transversely, be equipped with inhalant canal 13 in the casing 1, first cavity 101 and second cavity 102 are kept apart each other, 1 lateral wall bottom of casing is equipped with the inlet tube 11 that is used for intaking, inlet tube 11 and inhalant canal 13 intercommunication, 1 lateral wall top of casing is equipped with a core section of thick bamboo 14 and is used for the outlet pipe 12 of outlet water, outlet pipe 12 and first cavity 101 intercommunication, the built-in case 4 that is equipped with of a core section of

thick bamboo

14, 14 upper end openings of a core section of thick bamboo, the lower extreme is equipped with the case seat, the axle center of a core section of thick bamboo 14 is followed to the case seat is equipped with inlet opening 141 and apopore 142, inlet opening 141 and inhalant canal 13 intercommunication, apopore 142 communicates first cavity 101.

The heating pipe 2 is connected with the control circuit board 3, the heating pipe 2 is arranged in the first cavity 101, the control circuit board 3 is fixed in the second cavity 102 through a fixing piece, the control circuit board 3 is provided with the heating switch 31, the heating switch 31 comprises a first conducting sheet 311 and a second conducting sheet 312 which are used for conducting the control circuit board 3, the first conducting sheet 311 is an elastic conducting metal sheet, when the heating switch 31 is not switched on, the first conducting sheet 311 and the second conducting sheet 312 are arranged at intervals from top to bottom, the first conducting sheet 311 is positioned above the second conducting sheet 312, and the control circuit board 3 and the heating switch 31 are isolated from water sealing.

The handle assembly comprises a handle 51, a sealing cover 52 and a guide rod 54, gears on the handle 51 are sequentially set to be a hot water gear, a cold water gear and a closing gear, the center of the bottom of the handle 51 is connected with the valve core 4, the bottom of the handle 51 is protruded downwards to form a pressing block 511 near the edge, the sealing cover 52 comprises an annular cover 521 and a block 522 which is formed by extending downwards vertically from one side edge of the cover 521, the annular cover 521 is fixed at an opening at the upper end of the valve core cylinder 14 in a sealing manner through a screw, specifically, a fixing column 143 is arranged in the valve core cylinder 14, and the cover 521 is fixed on the fixing column 143 through a screw; a sliding slot 523 penetrates through the edge of one side of the cover 521 and the block 522 from top to bottom, the guide rod 54 is disposed in the sliding slot 523, the spring 55 is sleeved at the lower end of the guide rod 54, the spring 55 resets the guide rod 54, and the upper end of the guide rod 54 protrudes out of the surface of the cover 521.

The valve core 4 is installed on the valve core seat and can control water inlet of the water inlet hole 141 and water outlet of the water outlet hole 142, the valve core 4 comprises a fixed ceramic chip 41 and a movable ceramic chip 42 which are all circular, the fixed ceramic chip 41, the movable ceramic chip 42, a valve casing 43 for fixing the relative position between the fixed ceramic chip 41 and the movable ceramic chip 42 and a middle shaft 44 for driving the movable ceramic chip 42 to rotate jointly form the valve core 4 for opening and closing cold water and hot water, the valve core 4 with the structure is the prior art, and detailed description is omitted here. The fixed ceramic sheet 41 is provided with two through holes 411, and the two through holes 411 correspond to the water inlet holes 141 and the water outlet holes 142 on the valve core seat one by one; the fixed ceramic sheet 41 is positioned between the valve core seat and the movable ceramic sheet 42, the fixed ceramic sheet 41 is attached to the valve core seat, and the two through holes 411 are respectively in butt joint with the water inlet holes 141 and the water outlet holes 142 on the valve core seat; when the movable ceramic piece 42 is mounted, the movable ceramic piece 42 is tightly attached to the fixed ceramic piece 41, the inner side surface of the movable ceramic piece 42 is covered on the fixed ceramic piece 41 downwards, the movable ceramic piece 42 is provided with three adjusting holes 421 facing the fixed ceramic piece 41, and each adjusting hole 421 can cover one of the two through holes 411. The fixed ceramic pieces 41 and the movable ceramic pieces 42 are arranged in the valve casing 43, a middle shaft 44 extending to the outside of the valve casing 43 is connected with a handle 51, the movable ceramic pieces 42 can be driven to rotate by rotating the handle 51, and the water flow of the water outlet pipe 12 is adjusted by adjusting the area (adjusting opening) of the adjusting hole 421 communicated with the through hole 411.

The positions of the handle 51 connected with the valve core 4 are set as follows: when the rotating handle 51 is switched to the cold water gear, the water inlet channel 13 is communicated with the first cavity 101 through the valve core 4, at this time, the heating switch 31 is not triggered, the control circuit board 3 is in a disconnected state, and the heating pipe 2 does not work; when the handle 51 is rotated to switch to the hot water stop, the pressing block 511 at the bottom of the handle 51 presses the guide rod 54 downwards and pushes the guide rod 54 downwards, the lower end of the guide rod 54 extends out of the bottom of the block 522 and presses the first conductive sheet 311, so that the first conductive sheet 311 is contacted with the second conductive sheet 312, the heating switch 31 is closed, and the spring 55 is in a compressed state; when the handle 51 is rotated to switch from the hot water stop to the cold water stop and the closing stop in sequence, the pressing block 511 at the bottom of the handle 51 is separated from the guide rod 54, the guide rod 54 is reset under the action of the spring 55, the upper end of the guide rod 54 protrudes out of the surface of the cover 521, so that the first conductive sheet 311 and the second conductive sheet 312 are separated from each other, and the heating switch 31 is turned off. Through setting up guide arm 54 in the handle subassembly, only when twisting handle 51 soon to hot water shelves, the briquetting 511 of handle 51 bottom just presses down guide arm 54 and starts the heating down when intaking, can not only prevent like this dry combustion method, has avoided current electric heating tap to freeze the volume expansion in winter and cause glued membrane pressurized start heating pipe 2 dry combustion method moreover, arouses the potential safety hazard of conflagration.

Preferably, a temperature display screen 61 connected with the control circuit board 3 is embedded on the surface of the casing 1, and the temperature display screen 61 is used for displaying the water temperature.

Preferably, a temperature sensing probe 63 is arranged in the water outlet pipe 12, the temperature sensing probe 63 is connected with the control circuit board 3, and the temperature sensing probe 63 displays the detected water temperature through the temperature display screen 61.

Preferably, the electric heating faucet further comprises an overheating fusing safety switch 64 and an overheating protection switch 65 which are connected in series with the heating switch 31 and the heating pipe 2 in a circuit, wherein the overheating fusing safety switch 64 and the overheating protection switch 65 are used for sensing the water temperature, and the circuit is automatically disconnected when the water temperature reaches a set value, so that a double protection effect is achieved. When the temperature of the water detected by the temperature sensing probe 63 reaches a first set value, the control circuit board 3 sends a command to control the overheating protection switch 65 to be automatically turned off, and the heating pipe 2 stops heating; specifically, a through hole is formed below the temperature display screen 61 of the housing 1, the overheat protection switch 65 is a bounce switch, when the overheat protection switch 65 is turned off, the reset key 62 connected to the overheat protection switch 65 extends outwards along the through hole of the housing 1, and the overheat protection switch 65 can be reset by pressing the reset key 62 with a hand. When the water temperature is higher than a second set value (for example, 100 degrees or 105 degrees), the overheating fuse safety switch 64 is fused to prevent the heating pipe 2 from being burnt; the first set value is 10 degrees lower than the second set value, so that the overheating protection switch 65 is automatically switched off before the overheating fusing safety switch 64, the overheating fusing safety switch 64 can be prevented from being fused firstly when the water temperature is too high, and the frequency of replacing the overheating fusing safety switch 64 for the electric heating faucet after being returned to the factory for maintenance is reduced.

As shown in fig. 6, an electric heating faucet according to a second embodiment of the present invention includes a housing 1, a heating pipe 2 disposed in the housing 1, a control circuit board 3, a valve core 4, and a handle 51 connected to the valve core 4, a water inlet channel 13, a first cavity 101, and a second cavity 102 are disposed in the housing 1, the heating pipe 2 is disposed in the first cavity 101, and the second embodiment is different from the first embodiment only in that: the casing 1 is the tube-shape, along vertical setting, and 1 lower extreme of casing is equipped with the inlet tube 11 that is used for intaking, and 1 lateral wall of casing is equipped with a valve core section of

thick bamboo

14, and 1 upper end of casing is equipped with outlet pipe 12 that is used for going out water, and except casing 1, other structures are the same with the first embodiment completely.

Preferably, the stainless steel sleeve 103 is attached to the inner wall of the first cavity 101, the heating pipe 2 is closer to the inner wall of the first cavity 101, and by arranging the stainless steel sleeve 103, when the heating pipe 2 heats water, the temperature of the stainless steel sleeve 103 does not exceed the water temperature due to the fact that the stainless steel sleeve 103 is immersed in the water, heat conduction to the plastic shell 1 can be relieved, and the plastic shell 1 is not over-heated.

When the water heater is used, a user can adjust hot water and cold water according to use requirements, when the handle 51 is rotated to be switched to a cold water gear, the water inlet channel 13 is communicated with the first cavity 101 through the valve core 4, the heating switch 31 is not triggered at the moment, the control circuit board 3 is in a disconnected state, the heating pipe 2 does not work, and water flows into the first cavity 101, is not heated and flows out through the water outlet pipe 12. When the handle 51 is rotated to switch to the hot water gear, the water inlet channel 13 is communicated with the first cavity 101 through the valve core 4, the pressing block 511 at the bottom of the handle 51 presses the guide rod 54 downwards, the guide rod 54 moves downwards along the sliding groove 523 to press the first conducting strip 311, so that the first conducting strip 311 is contacted with the second conducting strip 312, the heating switch 31 is closed, the control circuit board 3 is in an electrified conduction state, the heating pipe 2 starts to work to heat water in the first cavity 101, and water flows into the first cavity 101 and flows out from the water outlet pipe 12 through heating. In addition, when the electric heating faucet is started by screwing the handle 51, the handle 51 is adjusted to a hot water shift, the water flow of the outlet water is adjusted from small to large through the cold water shift, and the water flow of the outlet water is adjusted from small to large through the hot water shift, so that the water cut-off condition cannot occur in the middle. After a user adjusts the electric heating faucet to a hot water gear, when the electric heating faucet needs to be turned off, the electric heating faucet can be turned off only through a middle cold water gear, waste heat is stored in the electric heating faucet after heating, and water flow cools the interior of the electric heating faucet when the water flow passes through the cold water gear, so that when a conventional use mode is adopted, the electric heating faucet directly passes through the turn-off gear from the hot water gear, a heating pipe of the electric heating faucet is not closed tightly, the electric heating faucet can continue to be heated, dry burning can occur due to too low water pressure, the waste heat is still stored even if the electric heating faucet is turned off, damage is caused to devices in the electric heating faucet, meanwhile, scalding of hands when the electric heating faucet is used again is prevented, and safety in use is guaranteed; meanwhile, the phenomenon that the heating pipe 2 is easy to rust and scale is formed on the surface of the heating pipe due to long-time contact with hot water can be effectively relieved.

The above descriptions of the embodiments of the present invention, which are not related to the above description, are well known in the art, and may be implemented by referring to the well-known technologies.

In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. An electric heating faucet comprises a shell, a heating pipe, a control circuit board, a valve core and a handle assembly, wherein the heating pipe is arranged in the shell, the handle assembly is connected with the valve core, a water inlet channel and a first cavity are formed in the shell, the heating pipe is connected with the control circuit board, the heating pipe is arranged in the first cavity, the shell is provided with a water inlet pipe, a valve core barrel and a water outlet pipe, the water inlet pipe is communicated with the water inlet channel, the valve core barrel is communicated with the first cavity, the valve core barrel is internally provided with the valve core, the upper end of the valve core barrel is opened, the lower end of the valve core barrel is provided with a valve core seat, the valve core seat is provided with a water inlet hole and a water outlet hole, the water inlet hole is communicated with the water inlet channel, the water outlet hole is communicated with the first cavity, the control circuit board is provided with a heating switch, and the heating switch comprises a first conducting strip and a second conducting strip which are used for conducting the control circuit board to be conducted; the method is characterized in that: the handle assembly comprises a handle, a sealing cover and a guide rod, gears on the handle are sequentially set to be a hot water gear, a cold water gear and a closing gear, the center of the bottom of the handle is connected with the valve core, the bottom of the handle is close to the edge and protrudes downwards to form a pressing block, the sealing cover comprises a cover body and a block body formed by extending downwards from the edge of one side of the cover body, the cover body is fixed at an opening at the upper end of the valve core cylinder, a sliding groove penetrates through the cover body and the block body from top to bottom, the guide rod is arranged in the sliding groove, the upper end of the guide rod is matched with the pressing block, the lower end of the guide rod is matched with a first conducting strip, when the handle is rotated to be switched to the hot water gear, the pressing block presses the guide rod downwards, and the lower end of the guide rod presses the first conducting strip to close the heating switch.

2. The electric heating faucet of claim 1, wherein: the shell is internally provided with a second cavity, the second cavity is isolated from the first cavity, and the control circuit board is fixed in the second cavity through a fixing piece.

3. The electric heating faucet of claim 1, wherein: the cover body is annular, a fixing column is arranged in the valve core barrel, and the cover body is fixed on the fixing column through a screw.

4. The electric heating faucet of claim 1, wherein: the lower end of the guide rod is sleeved with a spring.

5. The electric heating faucet of claim 1, wherein: the valve core is arranged on the valve core seat, the valve core comprises a fixed ceramic chip and a movable ceramic chip which are all circular, the fixed ceramic chip, the movable ceramic chip, a valve shell for fixing the relative positions of the fixed ceramic chip and the movable ceramic chip, and a middle shaft for driving the movable ceramic chip to rotate jointly form the valve core for opening and closing cold water and hot water, two through holes are arranged on the fixed ceramic chip, and the two through holes correspond to the water inlet holes and the water outlet holes on the valve core seat one by one; the fixed ceramic chip is positioned between the valve core seat and the movable ceramic chip, the fixed ceramic chip is attached to the valve core seat, the movable ceramic chip is provided with three adjusting holes, each adjusting hole can cover one of the two through holes, the fixed ceramic chip and the movable ceramic chip are installed in the valve shell, and the middle shaft extends to the outside of the valve shell and is connected with the handle.

6. The electric heating faucet of claim 1, wherein: and a temperature display screen connected with the control circuit board is embedded in the surface of the shell.

7. The electric heating faucet of claim 6, wherein: and a temperature sensing probe is arranged in the water outlet pipe and is connected with the control circuit board.

8. The electrically heated faucet of claim 7, wherein: the heating device is characterized by further comprising an overheating fusing safety switch and an overheating protection switch which are connected with the heating switch and the heating pipe in series in a circuit, wherein the overheating protection switch is set to be automatically disconnected when the water temperature is higher than a first set value, the overheating fusing safety switch is set to be fused when the water temperature is higher than a second set value, and the first set value is lower than the second set value.

9. The electric heating faucet of claim 1, wherein: the casing is the tube-shape, sets up along transversely, and casing lateral wall bottom is equipped with the inlet tube that is used for intaking, and casing lateral wall top is equipped with the outlet pipe that the valve core section of thick bamboo reaches and is used for going out water.

10. The electric heating faucet of claim 1, wherein: the casing is the tube-shape, along vertical setting, and the casing lower extreme is equipped with the inlet tube that is used for intaking, and the casing lateral wall is equipped with the valve core section of thick bamboo, and the casing upper end is equipped with the outlet pipe that is used for going out water, and the subsides of first cavity inner wall are equipped with a stainless steel sleeve.