Automatic thermostatic faucet

Abstract

The invention discloses an automatic thermostatic faucet, which includes a faucet housing, a thermostatic valve assembly, a warm water switch valve assembly and a temperature setting valve assembly. The faucet housing is provided with a warm water channel, a cold water inlet and a hot water inlet. The thermostatic valve assembly includes a thermostatic valve housing, a thermostatic valve core, a memory metal rod, a heat-conducting sleeve, a reset elastic member, an elastic sleeve and a push rod. The memory metal rod has the characteristic of shape memory effect to drive the thermostatic valve core to move, so that the flow change of cold and hot water gradually tends to be stable to achieve a constant temperature effect. Compared with the traditional memory spring, the memory metal rod has a larger bearing capacity and driving capacity, and is suitable for high-pressure pipeline systems. And the relative distance between the push rod and the memory metal rod can be adjusted through the temperature setting valve assembly to change the initial positioning of the dynamic thermostatic valve core to achieve the temperature setting target.

Description

Technical Field

[0001] The invention relates to the technical field of faucets, and in particular to an automatic temperature-adjusting faucet. Background Art

[0002] The current hot and cold faucet control systems in the industry mainly include the mode of controlling the water temperature by toggling the handle left and right and the mode of installing a thermostatic valve under the faucet. The handle mode mainly uses the manual control handle to adjust the amount of hot and cold water to mix the water to achieve the purpose of controlling the water temperature. The mode of controlling the water temperature with a thermostatic valve in front of the faucet is a mode of controlling the water temperature by coordinating two different devices, the faucet and the thermostatic valve. The disadvantage of this mode of controlling the water temperature with a manual handle is that the water temperature is controlled by human consciousness, which may cause the water temperature to vary, the temperature adjustment takes a long time, and the user experience is poor. The mode of controlling the water temperature with a thermostatic valve in front of the faucet requires more equipment, more pipelines, and occupies a large space, and the after-sales installation is more troublesome. At the same time, some existing automatic thermostatic faucets cannot be used in high-pressure pipeline systems. High-pressure water will cause the existing automatic thermostatic faucets to fail. Summary of the invention

[0003] The object of the present invention is to provide an automatic thermostatic faucet to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The technical solutions adopted to solve the above technical problems are:

[0005] An automatic thermostatic faucet, comprising: a faucet housing, a thermostatic valve assembly, a warm water switch valve assembly and a temperature setting valve assembly, the faucet housing is provided with a warm water channel, a cold water inlet and a hot water inlet, the warm water channel is provided with an inlet end and an outlet end; the thermostatic valve assembly comprises a thermostatic valve housing, a thermostatic valve core, a memory metal rod, a heat-conducting sleeve, a reset elastic member, an elastic sleeve and a push rod, the thermostatic valve housing is installed in the faucet housing, the thermostatic valve housing is provided with a guide channel which is through-through from left to right, the thermostatic valve core can be installed in the guide channel in a left-right sliding manner relative to the thermostatic valve housing, the outer peripheral wall of the thermostatic valve core is connected to the The inner circumferential wall of the guide channel is in sliding sealing contact, the thermostatic valve core divides the guide channel into a cold water chamber and a hot water chamber which are arranged on the left and right, a cold water inlet connected to the cold water inlet is arranged on the inner circumferential wall of the cold water chamber, a hot water inlet connected to the hot water inlet is arranged on the inner circumferential wall of the hot water chamber, a mixing water through hole connecting the hot water chamber and the cold water chamber is arranged on the thermostatic valve core, a mixing water chamber connected to the hot water chamber is formed at the right end of the thermostatic valve shell and the inside of the faucet shell seat, the inlet end is connected to the mixing water chamber, and the reset elastic member is arranged on the thermostatic valve core. The heat-conducting sleeve is fixed on the thermostatic valve core in a left-right extending manner, and the right end of the heat-conducting sleeve is blocked. The right end of the heat-conducting sleeve extends rightward to the mixing water chamber. The elastic sleeve is arranged on the left side of the thermostatic valve core in a left-right extending manner. The right end of the elastic sleeve is fixedly connected to the heat-conducting sleeve. The elastic sleeve can be elastically telescopic in the left and right directions. The push rod is sleeved in the elastic sleeve. The left end of the push rod is fixedly connected to the left end of the elastic sleeve. The memory metal rod can be telescopically sleeved in the heat-conducting sleeve in the left and right directions. The left end of the memory metal rod is connected to the right end of the push rod. They are arranged opposite to each other on the left and right, and the right end of the memory metal rod abuts against the right end of the heat-conducting sleeve; the warm water switch valve assembly is installed on the warm water channel, and the warm water switch valve assembly is configured to control the water flow rate and on-off of the warm water channel; the temperature setting valve assembly includes a thermostatic valve seat, a thermostatic valve block, and a thermostatic drive locking mechanism. The thermostatic valve seat is fixed to the left end of the faucet shell seat, and the thermostatic valve block can be slidably installed in the thermostatic valve seat on the left and right sides. The thermostatic drive locking mechanism has a driving end that is transmission-connected to the thermostatic valve block so that the thermostatic valve block moves left and right and is fixed. The left end of the push rod abuts against the right end of the thermostatic valve block.

[0006] The beneficial effect of the present invention is that when in use, cold water enters the mixing water chamber through the cold water inlet, the cold water entrance, the cold water chamber and the mixing water through hole in sequence, and hot water enters the mixing water chamber through the hot water inlet, the hot water entrance and the hot water chamber in sequence. The cold water and the hot water are mixed in the mixing water chamber to form mixed water. If the temperature of the mixed water is too high, the temperature is transmitted to the memory metal rod through the heat-conducting sleeve. Due to the shape memory effect of the memory metal rod, the length of the memory metal rod is immediately extended, so that the left end of the memory metal rod abuts against the right end of the push rod, and the push rod is pressed to move to the left, the elastic sleeve is stretched, and when the left end of the push rod abuts against the right end of the thermostatic valve block, the push rod drives the thermostatic valve core to move to the right relative to the thermostatic valve housing. At this time, the reset elastic member is compressed, and the thermostatic valve core can block a part of the flow area of ​​the hot water entrance, narrowing the hot water. The inlet opening is closed, the inflow of hot water is reduced, and at the same time the thermostatic valve core is offset to the cold water chamber, the opening of the cold water inlet is enlarged, the inflow of cold water is increased, and the temperature of the mixed water in the mixing water chamber is reduced; when the water temperature reaches a certain low temperature, the memory metal rod returns to its original shape, that is, the length of the memory metal rod is immediately shortened, the reset elastic member presses the push rod back to the right, and drives the thermostatic valve core to move toward the cold water chamber, narrowing the opening of the cold water inlet, the inflow of cold water is reduced, and at the same time the thermostatic valve core is offset to the hot water chamber, the opening of the hot water inlet is enlarged, the inflow of hot water is increased, and the temperature of the water in the mixing water chamber is increased, the flow changes of cold and hot water gradually tend to stabilize, and finally reach a constant temperature, which solves the problem of the trouble of manually controlling the temperature control handle, and compared with the traditional memory spring, the memory metal rod has a larger load-bearing capacity and driving ability, and is suitable for high-pressure pipeline systems. When using water, the warm water channel is opened through the warm water switch valve assembly, and the water outlet flow of the warm water channel is adjusted; and when the water temperature needs to be reset, the driving end on the temperature control drive locking mechanism drives the temperature control valve block to move left and right, and under the elastic deformation of the elastic sleeve, the push rod can be driven to move left and right relative to the memory metal rod, adjust the relative distance between the push rod and the memory metal rod, change the initial positioning of the dynamic constant temperature valve core, and achieve the temperature setting target.

[0007] At the same time, the memory metal rod drives the thermostatic valve core through the top rod, which can reduce the temperature difference between the two ends of the memory metal rod, so that the memory metal rod can be mainly controlled by the water temperature in the mixing chamber, improving the stability and accuracy of water temperature regulation. The thermostatic device and the faucet system are integrated to solve the problem of large equipment space occupation.

[0008] As a further improvement of the above technical solution, a third sealing ring is provided between the thermostatic valve seat and the faucet shell seat. During installation, the thermostatic valve seat and the faucet shell seat are generally detachably connected, and the third sealing ring can be used to improve the sealing performance of the connection between the thermostatic valve seat and the faucet shell seat.

[0009] As a further improvement of the above technical solution, the temperature control drive locking mechanism includes a temperature control nut seat, the temperature control valve seat is provided with a sliding groove connected to the guide groove, the temperature control valve block is a telescopic bolt extending left and right, the telescopic bolt can be slidably installed left and right in the right end of the sliding groove, the telescopic bolt and the sliding groove are relatively fixed in the circumferential direction, the temperature control nut seat is rotatably fixedly installed on the left end of the sliding groove, and the right end of the temperature control nut seat is threadedly connected to the telescopic bolt.

[0010] When adjusting the set temperature of warm water, by rotating the temperature control nut seat, under the threaded connection between the telescopic bolt and the temperature control nut seat, and under the guidance and fixation of the sliding groove, the telescopic bolt can move in the left and right direction relative to the sliding groove, and then the telescopic bolt can push the top rod to move to achieve the temperature setting effect.

[0011] As a further improvement of the above technical solution, a fourth sealing ring is arranged between the temperature regulating nut seat and the sliding groove.

[0012] Since the sliding groove is connected to the guide groove, the water inside will enter the right end of the sliding groove. At this time, the fourth sealing ring can improve the sealing performance between the temperature regulating nut seat and the left end of the sliding groove.

[0013] As a further improvement of the above technical solution, the temperature control drive locking mechanism also includes a temperature setting knob and a temperature setting clamping ring. The temperature setting clamping ring is fixedly installed on the left end of the temperature control valve seat, and a locking position is provided on the temperature setting clamping ring. The temperature setting knob is fixedly installed on the left end of the temperature control nut seat, and a locking clutch component that engages or separates with the locking position is provided on the temperature setting knob.

[0014] Under normal conditions, the engaging clutch component on the temperature setting knob engages with the engaging position on the temperature setting snap ring, and the temperature setting knob cannot be rotated, that is, the thermostat nut seat cannot be rotated; when the water temperature needs to be reset, the engaging clutch component is separated from the engaging position on the temperature setting snap ring, and the temperature setting knob can be rotated at this time to avoid people's misoperation.

[0015] As a further improvement of the above technical solution, the engaging and disengaging component includes a stop button movably mounted on the temperature setting knob, a locking spring arranged between the stop button and the temperature setting knob, and the stop button is connected to the stop rod for engaging or separating the locking position.

[0016] Normally, under the action of the locking spring, the anti-rotation rod remains in the state of being engaged in the locking position. When the water temperature needs to be reset, the anti-rotation button is pressed, and the anti-rotation button drives the anti-rotation rod to separate from the locking position.

[0017] As a further improvement of the above technical solution, the warm water switch valve assembly includes a warm water switch valve body and a warm water switch knob. The warm water switch valve body is rotatably installed on the inlet end, and the warm water switch knob is connected to the warm water switch valve body.

[0018] The hot water switch valve body is driven to rotate by turning the hot water switch knob, so that the hot water switch valve body controls the water flow rate and on-off of the inlet end.

[0019] As a further improvement of the above technical solution, a fifth sealing ring is arranged between the warm water switch valve body and the faucet housing seat. The fifth sealing ring can improve the sealing between the warm water switch valve body and the faucet housing seat to avoid water leakage.

[0020] As a further improvement of the above technical solution, a first sealing ring is sleeved on the outer peripheral wall of the thermostatic valve core, and the thermostatic valve core is in sealing contact with the inner peripheral wall of the guide channel through the first sealing ring, and a second sealing ring is arranged between the outer wall of the thermostatic valve housing and the inner wall of the faucet housing seat. The first sealing ring can improve the sealing between the thermostatic valve core and the guide channel, and the first sealing ring also plays a role of sliding matching, while the second sealing ring can improve the sealing between the thermostatic valve housing and the faucet housing seat.

[0021] As a further improvement of the above technical solution, the cold water inlet is connected to a cold water inlet pipe, the hot water inlet is connected to a hot water inlet pipe, and the outlet is connected to a faucet pipe.

[0022] The warm water in the mixing chamber is discharged through the warm water channel and the faucet pipe in sequence, while the cold water and hot water can enter from the cold water inlet pipe and the hot water inlet pipe respectively, which is also convenient for the installation and fixation of the faucet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0024] Figure 1 This is a structural schematic diagram of an embodiment of the automatic thermostatic faucet provided by the present invention, wherein two arrows represent left and right directions respectively;

[0025] Figure 2 This is a cross-sectional view of an embodiment of the automatic thermostatic faucet provided by the present invention, wherein two arrows indicate left and right directions respectively;

[0026] Figure 3 This is an exploded view of an embodiment of the automatic thermostatic faucet provided by the present invention;

[0027] Figure 4 It is an exploded view of one embodiment of the thermostatic valve assembly and the temperature setting valve assembly provided by the present invention. DETAILED DESCRIPTION

[0028] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 understood as a limitation on the present invention.

[0030] In the description of the present invention, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Reference Figures 1 to 4 The automatic thermostatic faucet of the present invention is implemented as follows:

[0033] like Figure 1 and Figure 2 As shown, the automatic thermostatic faucet of this embodiment includes a faucet housing 100 , a thermostatic valve assembly 200 , a warm water switch valve assembly 300 and a temperature setting valve assembly 400 .

[0034] like Figure 1 and Figure 2 As shown, the faucet housing 100 is provided with a warm water channel 110, a cold water inlet 120, and a hot water inlet 130. The warm water channel 110 is provided with an inlet end 111 and an outlet end 112. The cold water inlet 120 is connected to a cold water inlet pipe 121, and the hot water inlet 130 is connected to a hot water inlet pipe 131. The outlet end 112 is connected to a faucet pipe 140. The cold water inlet pipe 121 is connected to an external cold water pipeline, and the hot water inlet pipe 131 is connected to an external hot water pipeline. An installation cavity is provided in the faucet housing 100.

[0035] like Figure 2 , Figure 3 and Figure 4As shown, the thermostatic valve assembly 200 includes a thermostatic valve housing 210, a thermostatic valve core 220, a memory metal rod 230, a heat-conducting sleeve 240, a reset elastic member 250, an elastic sleeve 260, and a push rod 270. The reset elastic member 250 in this example is a thermostatic spring, and the elastic sleeve 260 is an elastic rubber sleeve, and the heat-conducting sleeve 240 is a copper sleeve. The thermostatic valve housing 210 is installed in the installation cavity in the faucet housing seat 100. The thermostatic valve housing 210 is provided with a guide channel 211 that is through from left to right. The thermostatic valve core 220 can be installed in the guide channel 211 by sliding left and right relative to the thermostatic valve housing 210. 211, the outer peripheral wall of the thermostatic valve core 220 is in sliding and sealing contact with the inner peripheral wall of the guide groove 211, and the thermostatic valve core 220 divides the guide groove 211 into a cold water chamber 212 and a hot water chamber 213 arranged on the left and right. A cold water inlet 214 connected to the cold water inlet 120 is arranged on the inner peripheral wall of the cold water chamber 212, and a hot water inlet 215 connected to the hot water inlet 130 is arranged on the inner peripheral wall of the hot water chamber 213. The hot water inlet 215 and the cold water inlet 214 in this embodiment are porous structures and are arranged in a ring-shaped interval. A mixing water through hole connecting the hot water chamber 213 and the cold water chamber 212 is provided on the thermostatic valve core 220, a mixing water chamber 280 communicating with the hot water chamber 213 is formed at the right end of the thermostatic valve shell 210 and the inside of the faucet shell 100, the inlet end 111 is communicated with the mixing water chamber 280, the reset elastic member 250 is provided between the right end face of the thermostatic valve core 220 and the right end inside the thermostatic valve shell 210, the heat-conducting sleeve 240 is extended left and right and fixed on the thermostatic valve core 220, the right end of the heat-conducting sleeve 240 is blocked, and the right end of the heat-conducting sleeve 240 extends rightward to the mixing water chamber 280. The chamber 280, the elastic sleeve 260 is extended left and right and arranged on the left side of the thermostatic valve core 220, the right end of the elastic sleeve 260 is fixedly connected to the heat-conducting sleeve 240, the elastic sleeve 260 can be elastically telescopic in the left and right directions, the push rod 270 is sleeved in the elastic sleeve 260, the left end of the push rod 270 is fixedly connected to the left end of the elastic sleeve 260, the memory metal rod 230 is telescopically sleeved in the heat-conducting sleeve 240, the left end of the memory metal rod 230 and the right end of the push rod 270 are arranged opposite to each other left and right, and the right end of the memory metal rod 230 abuts against the right end of the heat-conducting sleeve 240;

[0036] The temperature setting valve assembly 400 includes a thermostatic valve seat 410, a thermostatic valve block, and a thermostatic nut seat 420. The thermostatic valve block of this embodiment is a telescopic bolt 430 extending left and right. The thermostatic valve seat 410 is fixed to the left end of the faucet shell seat 100. The thermostatic valve seat 410 is provided with a sliding groove 411 connected to the guide groove 211. The telescopic bolt 430 can be slidably installed in the right end of the sliding groove 411. The telescopic bolt 430 and the sliding groove 411 are relatively fixed in the circumferential direction. The thermostatic nut seat 420 is rotatably fixedly installed on the left end of the sliding groove 411. The right end of the thermostatic nut seat 420 is threadedly connected to the telescopic bolt 430, and the left end of the push rod 270 abuts against the right end of the telescopic bolt 430.

[0037] like Figure 2 , Figure 3 and Figure 4 As shown, the warm water switch valve assembly 300 is installed on the warm water channel 110. The main function of the warm water switch valve assembly 300 is to control the water flow rate and on-off of the warm water channel 110. Specifically, the warm water switch valve assembly 300 includes a warm water switch valve body 310 and a warm water switch knob 320. The warm water switch valve body 310 is rotatably installed on the inlet end 111. The warm water switch knob 320 is connected to the warm water switch valve body 310. The warm water switch valve body 310 is driven to rotate by rotating the warm water switch knob 320, so that the warm water switch valve body 310 can control the water flow rate and on-off of the inlet end 111.

[0038] Furthermore, the temperature setting valve assembly 400 also includes a temperature setting knob 440 and a temperature setting snap ring 450. The temperature setting snap ring 450 is fixedly mounted on the left end of the temperature control valve seat 410. A latching position is provided on the temperature setting snap ring 450. The temperature setting knob 440 is fixedly mounted on the left end of the temperature control nut seat 420. A latching clutch component that is engaged with or separated from the latching position is provided on the temperature setting knob 440. The latching clutch component specifically includes a rotation-stop button 460 movably mounted on the temperature setting knob 440, and a latching clutch component that is disposed on the rotation-stop button 460. The locking spring 470 is between the button 460 and the temperature setting knob 440, and the anti-rotation button 460 is connected to the anti-rotation rod 461 that is engaged or separated from the locking position. Normally, under the action of the locking spring 470, the anti-rotation rod 461 is kept in the state of being engaged in the locking position, and the temperature setting knob 440 cannot be rotated, that is, the temperature adjustment nut seat 420 cannot be rotated. When the water temperature needs to be reset, the anti-rotation button 460 is pressed, and the anti-rotation button 460 drives the anti-rotation rod 461 to separate from the locking position. At this time, the temperature setting knob 440 can be rotated, which effectively avoids people's misoperation.

[0039] Furthermore, in order to improve the sealing of the faucet, a fourth sealing ring 600 is arranged between the thermostatic nut seat 420 and the sliding groove 411, a fifth sealing ring 700 is arranged between the hot water switch valve body 310 and the faucet shell seat 100, a first sealing ring 800 is sleeved on the outer peripheral wall of the thermostatic valve core 220, and the thermostatic valve core 220 is in sealing contact with the inner peripheral wall of the guide groove 211 through the first sealing ring 800, a second sealing ring 900 is arranged between the outer wall of the thermostatic valve shell 210 and the inner wall of the faucet shell seat 100, and a third sealing ring 500 is arranged between the thermostatic valve seat 410 and the faucet shell seat 100.

[0040] The working principle of the automatic thermostatic faucet of this embodiment is as follows: cold water enters the mixing water chamber 280 through the cold water inlet 120, the cold water inlet 214, the cold water chamber 212, and the mixing water through hole in sequence, and hot water enters the mixing water chamber 280 through the hot water inlet 130, the hot water inlet 215, and the hot water chamber 213 in sequence. The cold water and the hot water are mixed in the mixing water chamber 280 to form mixed water. If the temperature of the mixed water is too high, the temperature is increased by the heat-conducting sleeve 240. The elastic sleeve 260 is stretched, and the left end of the push rod 270 abuts against the right end of the thermostatic valve block, and the push rod 270 drives the thermostatic valve core 220 to move rightward relative to the thermostatic valve housing 210. When the water temperature reaches a certain low temperature, the memory metal rod 230 returns to its original shape, that is, the length of the memory metal rod 230 is immediately shortened, the reset elastic member 250 presses the push rod 270 back to the right, and drives the thermostatic valve core 220 to move toward the cold water chamber 212, narrowing the opening of the cold water inlet 214, and reducing the inflow of cold water. At the same time, the thermostatic valve core 220 deviates from the hot water chamber 213, expanding the opening of the hot water inlet 215, increasing the inflow of hot water, and raising the temperature of the water in the mixing water chamber 280. The flow rate of hot and cold water gradually stabilizes, and finally reaches a constant temperature.

[0041] When using water, the hot water switch knob 320 is rotated to drive the hot water switch valve body 310 to rotate, so that the hot water switch valve body 310 can control the water flow rate and on-off of the inlet end 111.

[0042] When the water temperature needs to be reset, the anti-rotation button 460 is pressed, and the anti-rotation button 460 drives the anti-rotation rod 461 to separate from the locking position, and the temperature setting knob 440 drives the thermostatic nut seat 420 to rotate. Under the threaded connection between the telescopic bolt 430 and the thermostatic nut seat 420, and the guiding and fixing of the sliding groove 411, the telescopic bolt 430 can move in the left and right directions relative to the sliding groove 411, and under the elastic deformation of the elastic sleeve 260, the push rod 270 can be driven to move left and right relative to the memory metal rod 230, so as to adjust the relative distance between the push rod 270 and the memory metal rod 230, change the initial positioning of the dynamic thermostatic valve core 220, and achieve the temperature setting target.

[0043] The memory metal rod 230 drives the thermostatic valve core 220 to move through the top rod 270, which can reduce the temperature difference between the two ends of the memory metal rod 230, so that the memory metal rod 230 can be mainly controlled by the water temperature in the water mixing chamber 280, thereby improving the stability and accuracy of water temperature regulation. The thermostatic device and the faucet system are integrated to solve the problem of large equipment space occupation.

[0044] In some embodiments, the constant temperature spring can be replaced by other reset elastic members 250 that have a reset function; the elastic rubber sleeve can also be replaced by an elastic sleeve 260 of other materials, and the thermal sleeve 240 can also be a sleeve of other thermally conductive materials.

[0045] In some embodiments, other sliding components are used for the thermostatic valve block, and other thermostatic drive locking mechanisms can be used to drive and fix the thermostatic valve block. It is only necessary for the thermostatic drive locking mechanism to have a driving end that is transmission-connected to the thermostatic valve block so that the thermostatic valve block can be moved left and right and fixed. In this case, a thermostatic drive locking mechanism of a gear and a rack is used.

[0046] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An automatic thermostatic faucet, characterized in that: It includes: A faucet housing (100) is provided with a warm water channel (110), a cold water inlet (120), and a hot water inlet (130); the warm water channel (110) is provided with an inlet end (111) and an outlet end (112); A thermostatic valve assembly (200) comprises a thermostatic valve housing (210), a thermostatic valve core (220), a memory metal rod (230), a heat-conducting sleeve (240), a reset elastic member (250), an elastic sleeve (260), and a push rod (270); the thermostatic valve housing (210) is installed in a faucet housing seat (100); the thermostatic valve housing (210) is provided with a guide channel (211) which is through-through in the left and right directions; the thermostatic valve core (220) can be installed in the guide channel (211) in a slidable manner in the left and right directions relative to the thermostatic valve housing (210); the outer peripheral wall of the thermostatic valve core (220) and the inner peripheral wall of the guide channel (211) are connected to each other. The thermostatic valve core (220) is in sliding sealing contact with the peripheral wall, the thermostatic valve core (220) divides the guide channel (211) into a cold water chamber (212) and a hot water chamber (213) arranged on the left and right, a cold water inlet (214) communicating with the cold water inlet (120) is arranged on the inner peripheral wall of the cold water chamber (212), a hot water inlet (215) communicating with the hot water inlet (130) is arranged on the inner peripheral wall of the hot water chamber (213), a water mixing hole communicating with the hot water chamber (213) and the cold water chamber (212) is arranged on the thermostatic valve core (220), and a mixing hole connecting the hot water chamber (213) and the cold water chamber (212) is arranged at the right end of the thermostatic valve housing (210). A water mixing chamber (280) communicating with the hot water chamber (213) is formed inside the faucet housing (100); the inlet end (111) is communicated with the water mixing chamber (280); the resetting elastic member (250) is arranged between the right end surface of the thermostatic valve core (220) and the right end of the thermostatic valve housing (210); the heat-conducting sleeve (240) is extended leftwards and fixed on the thermostatic valve core (220); the right end of the heat-conducting sleeve (240) is sealed; the right end of the heat-conducting sleeve (240) extends rightwards to the water mixing chamber (280); the elastic sleeve (260) is extended leftwards and fixed on the thermostatic valve core On the left side of the heat-conducting sleeve (220), the right end of the elastic sleeve (260) is fixedly connected to the heat-conducting sleeve (240), the elastic sleeve (260) can be elastically extended and retracted in the left and right directions, the push rod (270) is sleeved in the elastic sleeve (260), the left end of the push rod (270) is fixedly connected to the left end of the elastic sleeve (260), the memory metal rod (230) is sleeved in the heat-conducting sleeve (240) so as to be retractable in the left and right directions, the left end of the memory metal rod (230) and the right end of the push rod (270) are arranged opposite to each other in the left and right directions, and the right end of the memory metal rod (230) abuts against the right end of the heat-conducting sleeve (240); A warm water switch valve assembly (300) is installed on the warm water channel (110), and the warm water switch valve assembly (300) is configured to control the water flow rate and on-off of the warm water channel (110); A temperature setting valve assembly (400) comprising a temperature regulating valve seat (410), a temperature regulating valve block, and a temperature regulating drive locking mechanism, wherein the temperature regulating valve seat (410) is fixed to the left end of the faucet housing (100), the temperature regulating valve block is installed in the temperature regulating valve seat (410) so as to be slidable left and right, the temperature regulating drive locking mechanism has a drive end which is transmission-connected to the temperature regulating valve block so as to enable the temperature regulating valve block to move left and right and be fixed, and the left end of the push rod (270) is in contact with the right end of the temperature regulating valve block; The temperature control drive locking mechanism comprises a temperature control nut seat (420); the temperature control valve seat (410) is provided with a sliding groove (411) connected to the guide groove (211); the temperature control valve block is a telescopic bolt (430) extending left and right; the telescopic bolt (430) is slidably installed in the right end of the sliding groove (411) left and right; the telescopic bolt (430) and the sliding groove (411) are relatively fixedly arranged in the circumferential direction; the temperature control nut seat (420) is rotatably fixedly installed on the left end of the sliding groove (411); and the right end of the temperature control nut seat (420) is threadedly connected to the telescopic bolt (430); A fourth sealing ring (600) is provided between the temperature regulating nut seat (420) and the sliding groove (411); The temperature adjustment drive locking mechanism further comprises a temperature setting knob (440) and a temperature setting snap ring (450); the temperature setting snap ring (450) is fixedly mounted on the left end of the temperature adjustment valve seat (410); a locking position is provided on the temperature setting snap ring (450); the temperature setting knob (440) is fixedly mounted on the left end of the temperature adjustment nut seat (420); and a locking clutch component that engages with or disengages from the locking position is provided on the temperature setting knob (440); The engaging and disengaging component comprises a rotation-stop button (460) movably mounted on the temperature setting knob (440), and a locking spring (470) arranged between the rotation-stop button (460) and the temperature setting knob (440); the rotation-stop button (460) is connected to the rotation-stop rod (461) for engaging or disengaging the engaging position.

2. The automatic thermostatic faucet according to claim 1, characterized in that: A third sealing ring (500) is provided between the temperature regulating valve seat (410) and the faucet housing seat (100).

3. The automatic thermostatic faucet according to claim 1, characterized in that: The warm water switch valve assembly (300) comprises a warm water switch valve body (310) and a warm water switch knob (320); the warm water switch valve body (310) is rotatably mounted on the inlet end (111); and the warm water switch knob (320) is connected to the warm water switch valve body (310).

4. The automatic thermostatic faucet according to claim 3, characterized in that: A fifth sealing ring (700) is provided between the warm water switch valve body (310) and the faucet housing (100).

5. The automatic thermostatic faucet according to claim 1, characterized in that: A first sealing ring (800) is sleeved on the outer peripheral wall of the thermostatic valve core (220), the thermostatic valve core (220) is in sealing contact with the inner peripheral wall of the guide channel (211) via the first sealing ring (800), and a second sealing ring (900) is provided between the outer wall of the thermostatic valve housing (210) and the inner wall of the faucet housing seat (100).

6. The automatic thermostatic faucet according to claim 1, characterized in that: The cold water inlet (120) is connected to a cold water inlet pipe (121), the hot water inlet (130) is connected to a hot water inlet pipe (131), and the outlet (112) is connected to a faucet pipe (140).

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