Constant-temperature anti-scald shower faucet

Abstract

The utility model discloses a constant-temperature scald-proof shower faucet which comprises a faucet body, a temperature sensor, a temperature sensor, a temperature sensor, a temperature sensor, a temperature sensor and a temperature sensor. The faucet body is provided with a cold water inlet and a hot water inlet at intervals; the center pipe is arranged in the faucet body, a gap between the outer wall and the faucet body forms a cold water inlet flow channel, the cold water inlet flow channel is communicated with the first end of the center pipe, and the body cold water inlet is located in the direction close to the second end of the center pipe; the piston is movably arranged in the center pipe in the radial direction, a cold water cavity is formed between the end face of one end of the piston and the first end of the center pipe and communicates with the body cold water inlet through a cold water inlet flow channel, a hot water cavity water inlet is formed between the end face of the other end of the piston and the cavity of the center pipe, and the hot water cavity water inlet communicates with the body hot water inlet. The central pipe flows in the pipeline, cold water flows outside the central pipe, and the anti-scalding function is achieved. When cold water is cut off, the faucet can automatically close hot water, high-temperature water is prevented from flowing out of the faucet, and a user is prevented from being scalded.

Description

Technical Field

[0001] The utility model belongs to the technical field of faucets and relates to a constant temperature anti-scalding shower faucet. Background Art

[0002] At present, in daily life in our country, the commonly used shower faucets do not have a constant temperature function. Therefore, affected by the fluctuation of water pressure or simultaneous water use in multiple places, the temperature of the mixed water coming out of the faucet will be cold and hot, reducing the user's shower experience. Especially when the cold water is cut off due to reasons, the temperature of the mixed water coming out of the faucet is too high, and in serious cases, it may cause burns to the user, and personal safety cannot be guaranteed. Even the existing constant temperature shower faucets, because the faucet valve body is mostly made of integral metal casting or forging, during the shower process, when high-temperature hot water flows through the valve body, the temperature of the valve body rises, which is likely to cause burns to the user and does not have an anti-scalding function. Summary of the Utility Model

[0003] An object of the utility model is to solve at least the above problems and / or defects and provide at least the advantages described hereinafter.

[0004] Another object of the utility model is to provide a constant temperature anti-scalding shower faucet.

[0005] For this reason, the technical solution provided by the utility model is as follows:

[0006] A constant temperature anti-scalding shower faucet, which comprises:

[0007] A faucet body, on which a body cold water inlet and a body hot water inlet are arranged at intervals;

[0008] A central pipe, which is arranged in the faucet body, and the gap between the outer wall of the central pipe and the faucet body forms a cold water inlet flow channel, the cold water inlet flow channel is communicated with the first end of the central pipe, and the body cold water inlet is located in the direction close to the second end of the central pipe;

[0009] A piston, which is movably arranged in the central pipe along the radial direction, a cold water cavity is formed between one end face of the piston and the first end of the central pipe, the cold water cavity is communicated with the body cold water inlet through the cold water inlet flow channel, a hot water cavity water inlet is formed between the other end face of the piston and the cavity of the central pipe, and the hot water cavity water inlet is communicated with the body hot water inlet.

[0010] Preferably, the constant temperature anti-scalding shower faucet further comprises:

[0011] The valve sleeve, the outer wall of one end of which is fixed to the inner wall of the central pipe, and the other end extends towards one end of the faucet body. The valve sleeve has a valve sleeve inner cavity, and the valve sleeve inner cavity is provided with an internal hexagonal structure. The valve sleeve is located in front of the piston, and the gap between the end face of the other end of the valve sleeve and the end face of one end of the piston forms the cold water chamber water inlet;

[0012] The hexagonal bolt is axially movably arranged in the valve sleeve inner cavity. One end of the hexagonal bolt is provided with a hexagonal structure that matches the internal hexagonal structure of the valve sleeve. Along the radial direction inside one end of the hexagonal bolt, a top cap is arranged, and a top cap spring is arranged inside the other end;

[0013] The valve rod penetrates into the valve sleeve inner cavity from outside the faucet body and is threadedly connected to the hexagonal bolt. The valve rod is rotatably arranged in the valve sleeve inner cavity;

[0014] The temperature bulb is movably arranged in the central pipe and is located behind the piston. The push rod of the temperature bulb passes through the piston and is in contact connection with the inner cavity end face of the top cap;

[0015] When the valve rod is rotated, the hexagonal bolt moves and drives the piston and the temperature bulb to move along the axial direction of the central pipe; or when the push rod of the temperature bulb elongates or shortens due to the temperature change of the mixed water, it also drives the piston to move along the axial direction of the central pipe.

[0016] Preferably, the constant temperature anti-scalding shower faucet further includes:

[0017] The spring seat is fixed in the central pipe along the radial direction of the central pipe. The spring seat has a through spring seat cavity;

[0018] The return spring is installed in the spring seat along the radial direction of the central pipe;

[0019] One end of the diversion sleeve is installed in the return spring, and the other end has a diversion sleeve step surface. The outer wall of the diversion sleeve step surface is in contact with the return spring. The temperature sensing part of the temperature bulb is placed in the diversion sleeve, and the step surface of the temperature bulb is in contact with the other end of the diversion sleeve.

[0020] Preferably, in the constant temperature anti-scalding shower faucet, a main body mixed water outlet is provided on the faucet body. The main body mixed water outlet is communicated with the central pipe, and the communication position is located downstream of the diversion sleeve.

[0021] Preferably, the constant temperature anti-scalding shower faucet further includes:

[0022] A hydraulic generator is disposed inside the central pipe, on the mixed water flow channel, downstream of the spring seat, and a temperature sensor is provided in the hydraulic generator.

[0023] A temperature display screen is electrically connected to the hydraulic generator and the temperature sensor respectively. There is a specific body protrusion on the outer side of the faucet body. The body protrusion has a cavity with an opening, and the temperature display screen is arranged in the cavity of the faucet body.

[0024] Preferably, in the constant-temperature anti-scald shower faucet, one end of the valve stem is rotatably connected to the valve sleeve through a first circlip; a second circlip is installed between one end of the top cap and the hexagon bolt.

[0025] Preferably, in the constant-temperature anti-scald shower faucet, a sealing ring is sleeved between the piston and the central pipe.

[0026] Preferably, in the constant-temperature anti-scald shower faucet, the central pipe includes a first central pipe and a second central pipe. One ends of the first central pipe and the second central pipe are butted against each other and a seal is provided at the contact part.

[0027] Preferably, in the constant-temperature anti-scald shower faucet, a hole communicating with the inner cavity of the valve sleeve is opened at the other end of the valve sleeve.

[0028] Preferably, in the constant-temperature anti-scald shower faucet, one end of the valve stem is connected to a temperature control handle, and the temperature control handle is installed at one end of the faucet body; a flow control valve core is arranged inside the other end of the faucet body, and the flow control valve core is connected to a flow handle, and the flow handle is installed at the other end of the faucet body.

[0029] The present utility model has at least the following beneficial effects:

[0030] The constant-temperature anti-scald shower faucet of the present utility model adopts a constant-temperature control technology. Relying on the temperature-sensitive medium of the temperature-sensing element inside, the expansion or contraction generated with the change of water temperature is used to control the sizes of the cold and hot water inlets at the water inlet end of the faucet, so as to adjust the flow rates of the cold and hot water entering the faucet, and keep the temperature of the mixed water coming out of the faucet constant. When the cold water supply is cut off, under the action of the temperature-sensing element, the faucet will automatically close the hot water, avoiding the outflow of high-temperature water from the faucet and preventing scalding the user.

[0031] The constant-temperature anti-scald shower faucet of the present utility model has the pipes inside the faucet injection-molded with high-temperature resistant engineering plastics. The formed pipes are high-temperature resistant and do not conduct heat. High-temperature hot water flows inside the formed pipes, and cold water flows outside the formed pipes. Therefore, the high temperature of the hot water will not be conducted to the faucet valve body, having an anti-scald function.

[0032] Meanwhile, in the shower faucet of the present utility model, a water flow generator is provided in the faucet, and a temperature display screen is provided on the faucet body. The water flow generator can generate electricity under the action of water flow and supply electrical energy to the temperature display screen. At the same time, a temperature sensor is provided in the water flow generator, and the temperature sensor transmits the sensed water temperature signal to the temperature display screen, enabling the temperature display screen to display the corresponding water temperature accordingly. With the display of the temperature, users can more directly visually perceive the water temperature, making it more convenient and safe for users to use water.

[0033] Other advantages, objectives, and features of the present utility model will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present utility model. Brief Description of the Drawings

[0034] Figure 1 It is a front sectional view of the constant temperature anti-scald shower faucet in one of the solutions of the present utility model.

[0035] Figure 2 It is a front sectional view of the constant temperature anti-scald shower faucet in one of the solutions of the present utility model.

[0036] Figure 3 It is a front sectional view of the constant temperature adjustment mechanism in one of the solutions of the present utility model.

[0037] Figure 4 It is a side view of the constant temperature adjustment mechanism in one of the solutions of the present utility model.

[0038] Figure 5 It is a top view of the constant temperature adjustment mechanism in one of the solutions of the present utility model.

[0039] Figure 6 It is a front sectional view of the constant temperature adjustment mechanism in one of the solutions of the present utility model.

[0040] Figure 7 It is a schematic connection structure diagram of the hydraulic generator and the temperature display screen in one of the solutions of the present utility model.

[0041] Figure 8 It is a sectional view of the hydraulic generator in one of the solutions of the present utility model.

[0042] Figure 9 It is a front view of the temperature display screen in one of the solutions of the present utility model.

[0043] Figure 10 It is a side view of the temperature display screen in one of the solutions of the present utility model.

[0044] Figure 11 It is a top view of the temperature display screen in one of the solutions of the present utility model. Detailed implementation mode

[0045] The following further describes the present utility model in detail with reference to the attached drawings, so that those skilled in the art can implement it according to the text of the specification.

[0046] It should be understood that the terms such as "having", "including", and "comprising" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0047] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "setting" should be understood in a broad sense. For example, they can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The orientation or positional relationships indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the attached drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0048] As Figure 1 、 Figure 2 and Figure 3 shown, the present utility model provides a constant-temperature anti-scalding shower faucet, including:

[0049] A faucet body 1, on which a body cold water inlet 101 and a body hot water inlet 102 are arranged at intervals;

[0050] A central pipe, which is arranged inside the faucet body 1. The gap between the outer wall of the central pipe and the faucet body 1 forms a cold water flow channel 103. The cold water flow channel 103 is communicated with the first end of the central pipe, and the body cold water inlet 101 is located in the direction close to the second end of the central pipe; the central pipe is injection-molded with high-temperature resistant engineering plastics.

[0051] A piston 8, which is radially movably arranged inside the central pipe. A cold water cavity is formed between one end face of the piston 8 and the first end of the central pipe. The cold water cavity is communicated with the body cold water inlet 101 through the cold water flow channel 103. There is a hot water cavity water inlet 202 between the other end face of the piston 8 and the cavity of the central pipe, and the hot water cavity water inlet 202 is communicated with the body hot water inlet 102.

[0052] The constant-temperature anti-scalding shower faucet of the present utility model has a central pipe inside the faucet that is heat-resistant and non-conductive. High-temperature hot water flows inside the pipe, and cold water flows outside the central pipe. Therefore, the high temperature of the hot water will not be conducted to the faucet valve body, and it has an anti-scalding function.

[0053] In the above solution, preferably, it further includes:

[0054] A valve sleeve 4, one end of the outer wall of which is fixed on the inner wall of the central pipe, and the other end extends towards one end of the faucet body 1. The valve sleeve 4 has a valve sleeve inner cavity, the valve sleeve inner cavity is provided with an internal hexagonal structure, and the valve sleeve 4 is located in front of the piston 8. The gap between the end face of the other end of the valve sleeve 4 and the end face of one end of the piston 8 forms a cold water chamber water inlet 201;

[0055] A hexagonal bolt 3, which is axially movably arranged in the valve sleeve inner cavity. One end of the hexagonal bolt 3 is provided with a hexagonal structure that matches the internal hexagonal structure of the valve sleeve 4. Along the radial direction inside one end of the hexagonal bolt 3, a top cap 7 is arranged, and a top cap spring 6 is arranged inside the other end;

[0056] A valve rod 5, which penetrates into the valve sleeve inner cavity from outside the faucet body 1 and is threadedly connected to the hexagonal bolt 3. The valve rod 5 is rotatably arranged in the valve sleeve inner cavity;

[0057] A temperature package 9, which is movably arranged inside the central pipe and is located behind the piston 8. The push rod of the temperature package 9 passes through the piston 8 and is in contact connection with the inner cavity end face of the top cap 7;

[0058] When the valve rod 5 is rotated, the hexagonal bolt 3 moves and drives the piston 8 and the temperature package 9 to move along the axial direction of the central pipe; or when the push rod of the temperature package 9 causes elongation or shortening due to the temperature change of the mixed water, it also drives the piston 8 to move along the axial direction of the central pipe.

[0059] The constant-temperature anti-scalding shower faucet of the present utility model adopts constant-temperature control technology. Relying on the temperature-sensitive medium of the internal temperature-sensitive element, the expansion or contraction generated with the change of water temperature is used to control the sizes of the cold and hot water inlets at the water inlet end of the faucet, thereby adjusting the flow rates of the cold and hot water entering the faucet, so that the temperature of the mixed water coming out of the faucet remains constant. When the cold water supply is cut off, under the action of the temperature package, the faucet will automatically close the hot water, avoiding the outflow of high-temperature water from the faucet and preventing scalding the user.

[0060] In the above solution of the present utility model, preferably, it further includes:

[0061] A spring seat, which is fixed inside the central pipe along the radial direction of the central pipe. The spring seat has a through spring seat cavity;

[0062] A return spring 11, which is installed radially along the central tube inside the spring seat;

[0063] A flow guide sleeve 10, one end of which is installed inside the return spring 11, and the other end has a step surface of the flow guide sleeve 10. The outer wall of the step surface of the flow guide sleeve 10 contacts the return spring 11. The temperature sensing part of the temperature bulb 9 is placed in the flow guide sleeve 10, and the step surface of the temperature bulb 9 contacts the other end of the flow guide sleeve 10.

[0064] In the above solution, preferably, a main body mixed water outlet is provided on the faucet main body 1. The main body mixed water outlet is communicated with the central tube, and the communication position is downstream of the flow guide sleeve 10. A mixed water flow channel 205 is provided downstream of the constant temperature regulating mechanism 300 inside the central tube.

[0065] In one solution of the present utility model, preferably, it further includes:

[0066] A hydraulic generator 12, which is arranged inside the central tube and on the mixed water flow channel 104, downstream of the spring seat. A temperature sensor is provided in the hydraulic generator 12;

[0067] A temperature display screen 13, which is electrically connected to the hydraulic generator 12 and the temperature sensor respectively. There is a main body protruding part on the outside of the faucet main body 1. The main body protruding part has a cavity with an opening, and the temperature display screen 13 is arranged in the cavity of the faucet main body 1. The temperature display screen 13 is electrically connected to the hydraulic generator 12 through a wire 14.

[0068] For the shower faucet of the present utility model, a water flow generator is arranged in the faucet, and a temperature display screen is arranged on the faucet main body. The water flow generator can generate electricity under the action of water flow and supply electric energy to the temperature display screen. At the same time, a temperature sensor is provided in the water flow generator. The temperature sensor transmits the sensed water temperature signal to the temperature display screen, so that the temperature display screen can display the corresponding water temperature accordingly. Because of the display of the temperature, the user can more directly visually feel the water temperature, making it more convenient and safe for the user to use water.

[0069] In one solution of the present utility model, preferably, one end of the valve stem 5 is rotatably connected to the valve sleeve 4 through a first snap ring 401; a second snap ring 301 is installed between one end of the top cap 7 and the hexagon bolt 3.

[0070] In one solution of the present utility model, preferably, a sealing ring is sleeved between the piston 8 and the central tube.

[0071] In one embodiment of the present utility model, preferably, the central tube includes a first central tube 210 and a second central tube 220. One end of the first central tube 210 and the second central tube 220 are butt-jointed to each other and are provided with a seal in contact with each other.

[0072] In one embodiment of the present utility model, preferably, the other end of the valve sleeve 4 is provided with a hole communicating with the inner cavity of the valve sleeve.

[0073] In one embodiment of the present utility model, preferably, one end of the valve stem 5 is connected to a temperature control handle, and the temperature control handle is installed at one end of the faucet body 1; a flow control valve core is arranged inside the other end of the faucet body 1, and the flow control valve core is connected to a flow handle, and the flow handle is installed at the other end of the faucet body 1.

[0074] To enable those skilled in the art to better understand the technical solution of the present utility model, the following is a further description:

[0075] Realization of the constant temperature function: As Figure 1As shown in the figure, at the temperature control end of the faucet, a constant temperature adjustment mechanism 300 is provided inside one end thereof, which includes parts such as a valve stem 5, a valve sleeve 4, a hexagon bolt 3, a top cap spring 6, a top cap 7, a snap ring, a temperature bulb 9, a piston 8, a return spring 11, a flow guide sleeve 10, etc. The valve sleeve 4 is fixedly connected to the faucet body 1 by threads. The valve sleeve 4 is provided with a valve sleeve inner cavity, the valve sleeve inner cavity has an internal hexagonal structure, and there is an opening at the top of the valve sleeve inner cavity. The end of the valve stem 5 passes through the opening of the valve sleeve inner cavity of the valve sleeve 4 and is fixed on the valve sleeve 4 with a first snap ring 401 and can rotate 360 degrees. The other end of the valve stem 5 is connected to the hexagon bolt 3 by threads, and the end of the valve stem 5 extends into the inner cavity of the hexagon bolt 3 by threads. The end of the hexagon bolt 3 is provided with a hexagonal structure, and the hexagonal structure of the hexagon bolt 3 cooperates with the internal hexagonal structure of the valve sleeve 4, so that when the valve stem 5 rotates, the hexagon bolt 3 cannot rotate through the transmission of the threads and can only move up and down in the valve sleeve 4 (that is, move along the axis of the valve sleeve 4). The hexagon bolt 3 is equipped with a top cap spring 6 and a top cap 7. One side of the top cap 7 is pressed by the top cap spring 6, and the other side is blocked by the snap ring -2 and will not come out of the hexagon bolt 3. The top cap 7 has an inner cavity, and the push rod of the temperature bulb 9 extends into the inner cavity of the top cap 7; on the temperature bulb 9, it is fixedly connected to the piston 8 by threads. The temperature bulb 9 is successively provided with a flow guide sleeve 10 and a return spring 11 below; the temperature sensing part of the temperature bulb 9 is placed in the flow guide sleeve 10, and the step surface of the temperature bulb 9 is in contact with the upper end surface of the flow guide sleeve 10; the lower end part of the flow guide sleeve 10 is placed in the return spring 11, and the step surface of the flow guide sleeve 10 is in contact with the upper end surface of the return spring 11; the spring seat has an inner cavity, and the flow guide sleeve 10 and the return spring 11 are placed in the inner cavity of the spring seat. Under the action of the return spring 11, the push rod of the temperature bulb 9 remains in contact with the inner cavity end surface of the top cap 7. When the valve stem 5 rotates and the hexagon bolt 3 moves up and down, it will drive the temperature bulb 9 and the piston 8 to move up and down together. And when the push rod of the temperature bulb 9 elongates or shortens due to the increase or decrease of the temperature of the mixed water, the main body of the temperature bulb 9 moves up and down, and then drives the piston 8 to move up and down.

[0076] As Figure 2 shown, the hot inlet water outside the faucet enters the hot water inlet of the constant temperature adjustment mechanism 300 through the hot water inlet channel, and the cold inlet water enters the cold water inlet of the constant temperature adjustment mechanism 300 through the cold water inlet channel 103. As Figure 3 shown, through the sealing ring on the piston 8, the piston 8 divides the inner cavity of the main body into a cold water cavity 203 and a hot water cavity 204, where the cold water cavity 203 and the hot water cavity 204 are isolated from each other. At the cold water cavity 203, the upper end surface of the piston 8 and the lower end surface of the valve sleeve 4 form a cold water cavity water inlet 201, and the up and down movement of the piston 8 controls the size of the cold water cavity water inlet. The lower end surface of the piston 8 and one end surface of the hot water cavity 204 together form a hot water cavity water inlet 202, and the up and down movement of the piston 8 controls the size of the hot water cavity water inlet 202. When the lower end surface of the piston 8 contacts one end surface of the hot water cavity 204, the hot water cavity water inlet 202 is closed.

[0077] As Figure 3 shown, by rotating the valve stem 5, the hexagon bolt 3 moves up and down within the valve sleeve 4. During the upward movement of the hexagon bolt 3, the piston 8 moves upward along with the hexagon bolt 3 under the action of the spring below, thereby reducing the water inlet of the cold water chamber controlled by the upper end face of the piston 8, and at the same time increasing the water inlet of the hot water chamber 202 controlled by the lower end face of the piston 8, thereby adjusting the inlet ratio of cold and hot water and raising the water temperature of the mixed water. Conversely, during the downward movement of the hexagon bolt 3, the piston 8 moves downward, thereby increasing the water inlet of the cold water chamber controlled by the upper end face of the piston 8, and at the same time reducing the water inlet of the hot water chamber 202 controlled by the lower end face of the piston 8, thereby adjusting the inlet ratio of cold and hot water and lowering the water temperature of the mixed water. The purpose of adjusting the outlet temperature of the mixed water is achieved.

[0078] As Figure 2 and 3 shown, when the temperature of the mixed water changes, the temperature sensing part of the temperature bulb 9 located in the mixed water chamber senses the temperature change of the mixed water. When the temperature of the mixed water rises, the temperature sensing part of the temperature bulb 9 is heated, causing the push rod of the temperature bulb 9 to elongate. The elongation of the push rod causes the piston 8 to displace downward, thereby increasing the water inlet of the cold water chamber controlled by the upper end face of the piston 8, and at the same time reducing the water inlet of the hot water chamber 202 controlled by the lower end face of the piston 8, thereby adjusting the inlet ratio of cold and hot water and making the water temperature of the mixed water return to a stable temperature again. Conversely, when the temperature of the mixed water drops, the temperature sensing part of the temperature bulb 9 is cooled, causing the push rod of the temperature bulb 9 to shorten. The shortening of the push rod causes the piston 8 to displace upward, thereby reducing the water inlet of the cold water chamber controlled by the upper end face of the piston 8, and at the same time increasing the water inlet of the hot water chamber 202 controlled by the lower end face of the piston 8, thereby adjusting the inlet ratio of cold and hot water and making the water temperature of the mixed water return to a stable temperature again. The purpose of keeping the water temperature of the mixed water constant is achieved.

[0079] As Figure 3 shown, when the cold water supply fails, the temperature of the mixed water rises rapidly. The temperature sensing part of the temperature bulb 9 is heated, causing the push rod of the temperature bulb 9 to elongate. The elongation of the push rod causes the piston 8 to displace downward. The push rod elongates until the lower end face of the piston 8 contacts the end face of the hot water chamber 204, closing the water inlet 202 of the hot water chamber, thereby shutting off the hot water, achieving the purpose of shutting off the hot water when the cold water supply fails. It has the function of preventing scalding.

[0080] Realization of the anti-scald function: As Figure 4 , Figure 5 and Figure 6As shown, inside the faucet body 1, a central pipe is assembled. The central pipe consists of a first central pipe 210 and a second central pipe 220, both made of high-temperature resistant engineering plastics. As shown in the following figure, the first central pipe 210 and the second central pipe 220 are butt-jointed, and the butt-joint is sealed with a seal to form a water-permeable pipe, and water will not leak at the butt-joint. One end of the central pipe near the hot water inlet of the faucet is provided with a cold water inlet, and a hot water inlet is also opened at the front of the pipe. The hot water inlet of the pipe is basically butt-jointed with the hot water inlet of the faucet, so that hot water directly flows from the hot water inlet of the faucet into the hot water inlet of the central pipe. The hot water inlet of the central pipe is separated from the cold water inlet by a seal around the opening. After the cold water enters the body through the cold water inlet of the faucet, a cold water layer is formed on the entire outer wall of the central pipe and flows along the outer wall of the central pipe into the central pipe; the hot water enters directly into the hot water inlet of the central pipe through the hot inlet of the faucet and then flows into the central pipe. The cold water and the hot water pass through the constant temperature regulating mechanism 300, and mixed water is formed at the end of the constant temperature regulating mechanism 300. Through the mixed water flow channel 104 in the central pipe, the water finally flows out of the faucet. Therefore, most of the faucet body 1 is in contact with cold water, and the surface temperature of the faucet will not exceed 30 degrees, so it has an anti-scalding function.

[0081] Temperature digital display function: As Figure 7 shown is a group of a hydraulic generator 12 and a temperature display screen 13 assembly. When water with a certain pressure flows through the hydraulic generator 12, the hydraulic generator 12 can generate electricity to provide power for the temperature display screen 13 to make the temperature display screen 13 display. A temperature sensor is provided inside the hydraulic generator 12, which can sense the temperature of the water flowing through the hydraulic generator and display the sensed temperature on the temperature display screen 13.

[0082] As Figure 8 shown, inside the central pipe of this faucet, at the end of the mixed water of the constant temperature regulating mechanism 300 and on the flow path of the mixed water, the hydraulic generator 12 is provided. The mixed water must flow through the hydraulic generator 12 before it can flow into the next mixed water channel of the central pipe. When the mixed water flows through the hydraulic generator 12, the hydraulic generator 12 generates electricity to provide power for the temperature display screen 13. At the same time, a temperature sensor is provided in the hydraulic generator 12. The temperature sensor senses the temperature of the mixed water flowing through the generator and transmits the temperature signal to the temperature display screen 13 to display the temperature of the mixed water.

[0083] As Figure 9 、 Figure 10 and Figure 11As shown in the figure. There is a body protrusion on the outer side of the faucet body, enclosing a cavity with an opening facing the outside. The central axis of the cavity forms an angle with the horizontal plane of the faucet, making it easier for the user to see the temperature displayed on the temperature display screen 13. Inside the cavity of the body, a temperature display screen 13 is installed, and the display screen is connected to the hydraulic generator 12 and the temperature sensor through wires. The display plane of the temperature display screen 13 faces the opening of the cavity. A light-transmitting baffle is provided at the opening of the cavity, and a seal is provided at the junction of the baffle and the cavity opening to prevent water from entering the cavity. The baffle is connected to the cavity by snap connections, making the baffle easy to disassemble for the maintenance and replacement of the display screen.

[0084] The present invention adopts a constant temperature control technology. It relies on the expansion or contraction of the temperature-sensitive medium of the temperature-sensitive element inside to control the opening degrees of the cold and hot water at the water inlet end of the faucet, thereby regulating the flow rates of the cold and hot water entering the faucet and keeping the temperature of the mixed water flowing out of the faucet constant. When the cold water supply is cut off, under the action of the temperature-sensitive element, the faucet will automatically close the hot water, avoiding the outflow of high-temperature water from the faucet and preventing scalding the user. In the present invention, the central pipe component inside the faucet is injection-molded with high-temperature-resistant engineering plastics, which is high-temperature-resistant and does not conduct heat. The cold water forms a cold water layer outside the central pipe, and the high-temperature hot water flows inside the central pipe, and the high temperature will not be conducted to the faucet valve body, having an anti-scalding function. At the same time, a water flow generator is provided in the faucet, and a temperature display screen 13 is provided on the faucet body 1. The water flow generator can generate electricity under the action of water flow and supply electrical energy to the temperature display screen 13, no longer requiring an external power source. At the same time, the temperature sensor in the water flow generator transmits the water temperature signal it senses to the temperature display screen 13, and the temperature of the water flowing out can be directly displayed on the display screen, enabling the user to more directly visually sense the water temperature and making the control of the water temperature flowing out more intuitive and accurate. It makes the user's water use more convenient and safe.

[0085] The number of modules and the processing scale described here are used to simplify the description of the present utility model. The application, modification, and variation of the constant temperature anti-scalding shower faucet of the present utility model are obvious to those skilled in the art.

[0086] Although the embodiments of the present utility model have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to the specific details and the illustrated examples described here.

Claims

1. A constant temperature anti-scalding shower faucet, characterized in that, Comprising: A faucet body, on which a body cold water inlet and a body hot water inlet are provided at intervals; A central pipe, which is arranged in the faucet body. The gap between the outer wall of the central pipe and the faucet body forms a cold water inlet flow channel. The cold water inlet flow channel communicates with the first end of the central pipe, and the body cold water inlet is located in the direction close to the second end of the central pipe; A piston, which is radially movably arranged in the central pipe. A cold water chamber is formed between one end face of the piston and the first end of the central pipe. The cold water chamber communicates with the body cold water inlet through the cold water inlet flow channel. There is a hot water chamber water inlet between the other end face of the piston and the cavity of the central pipe, and the hot water chamber water inlet communicates with the body hot water inlet.

2. The constant-temperature anti-scalding shower faucet according to claim 1, characterized in that, Further comprising: A valve sleeve, one end of the outer wall of which is fixed on the inner wall of the central pipe, and the other end extends towards one end of the faucet body. The valve sleeve has a valve sleeve inner cavity, the valve sleeve inner cavity is provided with an internal hexagonal structure, and the valve sleeve is located in front of the piston. The gap between the other end face of the valve sleeve and one end face of the piston constitutes a cold water chamber water inlet; A hexagonal bolt, which is axially movably arranged in the valve sleeve inner cavity. One end of the hexagonal bolt is provided with a hexagonal structure matching the internal hexagonal structure of the valve sleeve. A top cap is arranged along the radial direction inside one end of the hexagonal bolt, and a top cap spring is arranged inside the other end; A valve rod, which penetrates into the valve sleeve inner cavity from outside the faucet body and is threadedly connected with the hexagonal bolt. The valve rod is rotatably arranged in the valve sleeve inner cavity; A temperature bulb, which is movably arranged in the central pipe and is located behind the piston. The push rod of the temperature bulb passes through the piston and is in contact connection with the inner cavity end face of the top cap; When the valve rod is rotated, the hexagonal bolt moves and drives the piston and the temperature bulb to move along the axial direction of the central pipe; or when the push rod of the temperature bulb elongates or shortens due to the temperature change of the mixed water, it also drives the piston to move along the axial direction of the central pipe.

3. The constant-temperature anti-scalding shower faucet according to claim 2, characterized in that, Further comprising: A spring seat, which is radially fixed in the central pipe along the central pipe. The spring seat has a through spring seat cavity; A return spring, which is installed in the spring seat along the radial direction of the central pipe; A guide sleeve, one end of which is installed in the return spring, and the other end has a guide sleeve step surface. The outer wall of the guide sleeve step surface is in contact with the return spring. The temperature sensing part of the temperature bulb is placed in the guide sleeve, and the step surface of the temperature bulb is in contact with the other end of the guide sleeve.

4. The constant-temperature anti-scalding shower faucet according to claim 3, characterized in that, A body mixed water outlet is provided on the faucet body. The body mixed water outlet communicates with the central pipe, and the communication position is downstream of the guide sleeve.

5. The constant-temperature anti-scalding shower faucet according to claim 3, characterized in that, Further comprising: A hydraulic generator, which is arranged in the central pipe and on the mixed water flow channel, downstream of the spring seat. A temperature sensor is arranged in the hydraulic generator; A temperature display screen, which is electrically connected to the hydraulic generator and the temperature sensor respectively. There is a specific body protrusion on the outer side of the faucet body. The body protrusion has a cavity with an opening, and the temperature display screen is arranged in the cavity of the faucet body.

6. The constant-temperature anti-scalding shower faucet according to claim 2, characterized in that One end of the valve stem is rotatably connected to the valve sleeve through a first circlip; a second circlip is installed between one end of the top cap and the hexagon bolt.

7. The constant-temperature anti-scalding shower faucet according to claim 1, characterized in that, A sealing ring is sleeved between the piston and the central tube.

8. The constant-temperature anti-scalding shower faucet according to claim 1, characterized in that, The central tube includes a first central tube and a second central tube. One ends of the first central tube and the second central tube are butted against each other and a seal is provided at the contact.

9. The constant-temperature anti-scalding shower faucet according to claim 2, wherein The other end of the valve sleeve is provided with a hole communicating with the inner cavity of the valve sleeve.

10. The constant-temperature anti-scalding shower faucet according to claim 2, characterized in that, One end of the valve stem is connected to a temperature control handle, and the temperature control handle is installed at one end of the faucet body; a flow control valve core is arranged inside the other end of the faucet body, and the flow control valve core is connected to a flow handle, and the flow handle is installed at the other end of the faucet body.

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