Constant-temperature and constant-flow control valve

Abstract

The utility model discloses a constant-temperature and constant-flow control valve which comprises a main valve body, a water mixing cavity and a water outlet cavity which are communicated with each other are arranged in the main valve body, a cold water inlet and a hot water inlet are oppositely arranged on the side wall of the water mixing cavity, the water outlet cavity is communicated with a water outlet, and a flow valve core is arranged at the communication position of the water mixing cavity and the water outlet cavity to control on-off of a water path; a probe of the first temperature sensor is arranged in the water outlet cavity; the temperature adjusting valve element comprises a first stepping motor, an output shaft of the first stepping motor is connected with one end of a first adjusting rod, the other end of the first adjusting rod extends into the water mixing cavity and forms a protruding part, and the two end faces of the protruding part are opposite to and matched with the port of the cold water inlet and the port of the hot water inlet correspondingly. According to the constant-temperature constant-flow water outlet valve, the double-valve-element cooperative control is adopted, the constant-temperature constant-flow water outlet effect can be effectively achieved, use is flexible and convenient, time and labor are saved, and the experience effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to water mixing valve technical field, specifically to a constant temperature constant flow control valve. BACKGROUND

[0002] With the continuous improvement of urban residents' living standards, the quality requirements of bathroom products, especially faucet products, are also continuously improved. Although the traditional mechanical faucet has a simple structure, it has many inconveniences in use, especially when adjusting the water temperature and flow, manual operation is often required, and accurate control is difficult. With the development of electronic technology, electronic faucets have gradually entered the market. They can control the opening and closing of the waterway through electromagnetic valves and achieve the function of automatic water output. However, most existing electronic faucets can only control the opening and closing of the waterway and cannot accurately adjust the water temperature and flow.

[0003] In order to realize the adjustability of water temperature, some electronic faucets use electromagnetic valves as waterway switches and cooperate with manual mechanical valve cores for temperature adjustment. For example, a temperature-adjusting water mixing valve disclosed in Chinese Patent No. CN216519752U adjusts the inflow and outflow of cold and hot water by manually rotating the knob to drive the temperature-adjusting valve core to rotate. However, this mode still needs manual adjustment, and because of the differences in water flow and water pressure in the cold water pipe and the hot water pipe, users often need to manually adjust the water mixing valve to change the cold and hot water flow ratio when mixing water, which cannot achieve the purpose of automatic temperature adjustment.

[0004] In addition, a water mixing valve disclosed in Chinese Patent No. CN102086941B can fully mix cold and hot water and discharge it by setting a double linkage valve. However, this structure can only adjust the cold water flow entering the hot water, and the temperature adjustment range is small, which cannot meet the user's demand for accurate control of water temperature.

[0005] The existing water mixing valve technology has obvious deficiencies in automatic temperature adjustment and constant flow control, and there is an urgent need for a constant temperature constant flow control valve that can automatically adjust the water temperature and control the flow to improve the user's experience. UTILITY MODEL CONTENTS

[0006] The utility model provides a constant temperature constant flow control valve, which obtains the water outlet temperature through the first temperature sensor in the water outlet cavity, controls the temperature-adjusting valve core to adjust the mixing ratio of cold and hot water in the water mixing cavity in time, and controls the water outlet flow of the main valve body as a whole by the flow valve core.

[0007] In order to realize these objects and other advantages of the present application, a constant temperature and constant flow control valve is provided, comprising: a main valve body, which is internally provided with a water mixing cavity and a water outlet cavity in communication, a cold water inlet and a hot water inlet are oppositely arranged on the side wall of the water mixing cavity, the water outlet cavity is communicated with a water outlet, and a flow valve core is arranged at the communication position of the water mixing cavity and the water outlet cavity to control the water route on-off; a first temperature sensor, whose probe is arranged in the water outlet cavity; a temperature regulating valve core, which comprises a first stepping motor, one end of a first adjusting rod is connected with the output shaft of the first stepping motor, the other end of the first adjusting rod extends into the water mixing cavity and is formed with a protruding portion, and the end faces of the protruding portion are respectively opposite to and matched with the ports of the cold water inlet and the hot water inlet, wherein the protruding portion is separated from or blocked with the cold water inlet and the hot water inlet when the first adjusting rod is axially translated.

[0008] Preferably, the cold water inlet and the hot water inlet are respectively connected with a cold water inlet pipe and a hot water inlet pipe, and a check valve is arranged in the water inlet end pipe of the cold water inlet pipe and the hot water inlet pipe.

[0009] Preferably, the temperature regulating valve core further comprises a first fixing sleeve, the first fixing sleeve is a cylindrical structure, the inner cavity of the first fixing sleeve is communicated with the inner cavity of the cold water inlet pipe, the first fixing sleeve is arranged at the front end of the cold water inlet, one end of the first fixing sleeve is detachably connected with the first stepping motor, the first adjusting rod is arranged in the first fixing sleeve, and the protruding portion is matched with the port of the proximal end of the first fixing sleeve, wherein the protruding portion is separated from or blocked with the port of the first fixing sleeve when the first adjusting rod is axially translated.

[0010] Preferably, the water mixing cavity and the water outlet cavity are communicated through a first passage, the flow valve core comprises a second fixing sleeve, the second fixing sleeve is a cylindrical structure which is detachably connected with the main valve body, one end of the second fixing sleeve is fixedly provided with a second stepping motor, the output shaft of the second stepping motor is connected with one end of a second adjusting rod, the other end of the second adjusting rod corresponds to and matches with the port of the first passage, wherein when the second adjusting rod is axially translated under the driving of the second stepping motor, the end portion of the second adjusting rod opens or blocks the first passage.

[0011] Preferably, a magnetic impeller rotor is arranged in the pipe cavity at the rear end of the water outlet, and a Hall sensor is arranged on the outer surface of the main valve body and corresponds to the position of the impeller rotor.

[0012] Preferably, the included angle between the water outlet and the first passage is 90°.

[0013] Preferably, a second passage is further arranged between the water mixing chamber and the water outlet chamber, a manual valve core is arranged on the main valve body, the manual valve core comprises a third fixed sleeve in sealing connection with the main valve body, a screw rod and an actuating head in mutual thread connection are arranged in the third fixed sleeve, one end of the actuating head is internally threaded and is slidably connected in the third fixed sleeve, the other end blocks the port of the second passage, and the screw rod is rotatably fixed in the third fixed sleeve, wherein when the screw rod is rotated, the actuating head is translated and separated from or blocks the port of the second passage.

[0014] Preferably, a second temperature sensor is further included, and a probe of the second temperature sensor is arranged at a front end of the hot water inlet.

[0015] Preferably, a shell is further included, and the main valve body, the temperature regulating valve core, the flow valve core, the manual valve core, the cold water inlet pipe, the hot water inlet pipe, the water outlet and the screw rod are fixed in the shell, and the cold water inlet pipe, the hot water inlet pipe, the water outlet and the screw rod respectively pass through corresponding through holes of the shell and are arranged in sealing connection with the shell.

[0016] The utility model at least includes following beneficial effects:

[0017] First, through the cooperation of the temperature regulating valve core and the first temperature sensor, the mixing ratio of cold and hot water can be automatically adjusted, the constant of water temperature is ensured, and the tedious operation of manual adjustment is avoided.

[0018] Second, through the control of the flow valve core, the water flow can be accurately adjusted to meet the needs of users for different flow rates.

[0019] Third, the automatic control of the temperature regulating valve core and the flow valve core makes users not need to manually adjust, use more flexible and convenient, save time and effort, and the constant temperature and constant flow design enables users to obtain stable water temperature and flow rate in the use process, and improves the use experience.

[0020] Other advantages, objects and features of the utility model will be partly embodied through the following description, and will be partly understood by the person skilled in the art through the research and practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a device overall schematic view in a technical scheme of the utility model;

[0022] Figure 2 It is a device internal structure schematic view in a technical scheme of the utility model;

[0023] Figure 3 It is a device main view sectional view in a technical scheme of the utility model;

[0024] Figure 4This is a schematic diagram of the device assembly in one technical solution of this utility model;

[0025] Figure 5 This is a cross-sectional view of the temperature control valve core in one technical solution of this utility model;

[0026] Figure 6 This is a cross-sectional view of the flow valve core in one of the technical solutions of this utility model.

[0027] Figure Descriptions: 1-House, 10-Fixing Plate, 2-Main Valve Body, 201-Mixing Chamber, 202-Outlet Chamber, 203-First Passage, 204-Second Passage, 21-Hot Water Inlet, 22-Cold Water Inlet, 23-Outlet, 210-Hot Water Inlet Pipe, 220-Cold Water Inlet Pipe, 3-Temperature Control Valve Core, 31-First Stepper Motor, 32-First Fixing Sleeve, 320-Through Hole, 33-First Adjusting Rod, 331-Protrusion, 4-Flow Valve Core, 41-Second Stepper Motor, 42-Second Fixing Sleeve, 43-Second Adjusting Rod, 431-Plug, 5-First Temperature Sensor, 51-Second Temperature Sensor, 6-Impeller Rotor, 61-Hall Sensor, 7-Manual Valve Core, 71-Third Fixing Sleeve, 72-Actuating Head, 73-Turning Rod, 74-Handwheel, 8-Check Valve. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0029] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0030] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the components described are commercially available unless otherwise specified. In the description of this utility model, it should be noted that, unless otherwise explicitly stated and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] like Figures 1-6 As shown, the technical solution of this application provides a constant temperature and constant flow control valve, including: a main valve body 2, which has a connected mixing chamber 201 and an outlet chamber 202 inside. The side wall of the mixing chamber 201 is provided with a cold water inlet 22 and a hot water inlet 21, and the outlet chamber 202 is connected to an outlet 23. A flow control valve core 4 is provided at the connection between the mixing chamber 201 and the outlet chamber 202 to control the flow of water; a first temperature sensor 5, whose probe is set in the outlet chamber 202; and a temperature control valve core 3, which includes a first stepper motor 31. The output shaft of the first stepper motor 31 is connected to one end of a first adjusting rod 33, and the other end of the first adjusting rod 33 extends into the mixing chamber 201. A protrusion 331 is formed within the 01 section. The two ends of the protrusion 331 are respectively opposite to and matched with the ports of the cold water inlet 22 and the hot water inlet 21. The protrusion 331 separates from or blocks the cold water inlet 22 and the hot water inlet 21 when the first adjusting rod 33 moves axially. In this technical solution, the outlet 23 is connected to the faucet, and the hot water inlet 21 and the cold water inlet 22 are respectively connected to the external cold water pipe and hot water pipe. In this solution, the temperature regulating valve core 3, the flow valve core 4, and the first temperature sensor 5 are connected to the external control module. The external communication module can be a commercially available PCB board, which is electrically connected to the smart faucet and the power supply equipment.

[0032] In this technical solution, the main valve body 2 includes a mixing chamber 201 and an outlet chamber 202 connected by pipelines. A flow valve core 4 is disposed in the passage between the mixing chamber 201 and the outlet chamber 202. The flow valve core 4 can be a commercially available ceramic valve core or other finished component. A valve with controllable opening and closing size is located between its inlet and outlet. The inlet and outlet of the flow valve core 4 are respectively connected to the mixing chamber 201 and the outlet chamber 202. The flow valve core 4 contains a device for controlling the degree of valve opening and closing. The mixing chamber 201 has two inlets, a hot water inlet 21 and a cold water inlet 22, which are arranged opposite each other. The first adjusting rod 33 can extend its end into the mixing chamber 201 from either the hot water inlet 21 or the cold water inlet 22. The end of the first adjusting rod 33 has a protrusion 331, which is a cylinder or cone with dimensions matching the ports of the hot water inlet 21 and the cold water inlet 22. The protrusion 331 is located between the hot water inlet 21 and the cold water inlet 22. When the cold water inlet 22 is between the two ports, both ports are unblocked, and hot and cold water enter the mixing chamber 201 without obstruction. When the protrusion 331 moves with the first adjusting rod 33 and completely presses against one of the ports of the hot water inlet 21 and the cold water inlet 22, the water flow corresponding to the blocked inlet cannot enter the mixing chamber 201. The protrusion 331 can reduce or expand the gap between itself and the hot water inlet 21 and the cold water inlet 22 by displacement, thereby achieving the purpose of flow control of the corresponding inlet, and thus accurately controlling the ratio of hot and cold water entering the mixing chamber 201. The first stepper motor 31 is a commercially available finished component. The first stepper motor 31 is set outside the main valve body 2. Through the cooperation of the internal gears and lead screw, its output shaft can be adjusted along the length direction. The output shaft of the first stepper motor 31 is connected to the end of the first adjusting rod 33, accurately controlling the positional relationship between the protrusion 331 and the hot water inlet 21 and the cold water inlet 22.

[0033] The working principle of this technical solution is as follows: the first stepper motor 31, the flow valve core 4, and the first temperature sensor 5 are all connected to an external control module. The user sets the flow and temperature parameters on the external smart faucet. The external control module controls the flow valve core 4 to control the opening degree of its valve according to the preset water flow rate based on the received signal. At this time, the first temperature sensor 5 collects the water temperature in the outlet chamber 202. When the water temperature is lower than the preset outlet temperature, the first stepper motor 31 drives the first adjusting rod 33 to move the protrusion 331 on it closer to the cold water inlet 22, increasing the opening of the hot water inlet 21 while decreasing the opening of the cold water inlet 22, so that the proportion of hot water in the mixed water entering the mixing chamber 201 increases. When the temperature of the mixed water in the outlet chamber 202 is equal to the preset outlet temperature, the external control module stops driving the first stepper motor 31.

[0034] This technical solution includes at least the following beneficial effects: A first temperature sensor 5 is installed in the water outlet chamber 202 to monitor the temperature of the mixed water in real time. Users do not need to reach out to measure the temperature, avoiding burns from overheated water or stress reactions from overly cold water. The water flow rate and temperature are controlled by a dual valve core. The temperature regulating valve core 3 controls only the mixing ratio of hot and cold water, while the flow rate valve core 4 controls the amount of mixed water entering from the mixing chamber 201 to the water outlet chamber 202. This effectively solves the problem that a single valve core cannot achieve constant temperature and flow in conventional methods. The first adjusting rod 33 with the protrusion 331 can effectively control the opening of the hot water inlet 21 and the cold water inlet 22. The structure is simple and effective, and the water temperature adjustment does not require manual operation, saving time and effort.

[0035] In another technical solution, the cold water inlet 22 and the hot water inlet 21 are respectively connected to a cold water inlet pipe 220 and a hot water inlet pipe 210. A check valve 8 is installed in the inlet end of both the cold water inlet pipe 220 and the hot water inlet pipe 210. In this technical solution, the cold water inlet pipe 220 and the hot water inlet pipe 210 are used to connect to the external water supply pipe. Due to the difference in water pressure and flow rate between the cold and hot water, cold water may flow back into the hot water pipe, or hot water may flow back into the cold water pipe, causing fluctuations in the outlet water temperature and affecting the user experience. Therefore, a check valve 8 is installed at the inlet end of the cold water inlet pipe 220 and the hot water inlet pipe 210 to ensure that the cold and hot water are in a stable unidirectional flow state when entering the mixing chamber 201, thereby providing a good foundation for subsequent temperature and flow control.

[0036] In another technical solution, the temperature regulating valve core 3 further includes a first fixing sleeve 32. The first fixing sleeve 32 is a cylindrical structure, and its inner cavity communicates with the inner cavity of the cold water inlet pipe 220. The first fixing sleeve 32 is located at the front end of the cold water inlet 22. One end of the first fixing sleeve 32 is detachably and sealed to a first stepper motor 31. The first adjusting rod 33 passes through the first fixing sleeve 32. The protrusion 331 matches the port near the end of the first fixing sleeve 32. The protrusion 331 separates from or forms a blockage with the port of the first fixing sleeve 32 when the first adjusting rod 33 moves axially. In this technical solution, as shown... Figure 2 , Figure 3 , Figure 4As shown, the first fixing sleeve 32 is located at the front end of the cold water inlet 22 and is detachably connected to the main valve body 2. The first fixing sleeve 32 and the main valve body 2 are connected by a sealed detachable connection, which facilitates the assembly and debugging of the temperature control valve core 3 while preventing liquid from flowing out of the main valve body 2. The first fixing sleeve 32 plays a role in fixing and guiding the first stepper motor 31. The cylindrical structure design of the first fixing sleeve 32 allows the first adjusting rod 33 to move smoothly axially within it, ensuring that the protrusion 331 can accurately separate from or block the port of the first fixing sleeve 32. The cold water outlet 22 and the outer cylindrical wall of the first fixing sleeve 32 maintain a sealed relationship. Several through holes 320 are opened on the sleeve of the first fixing sleeve 32, so that the internal cavity of the first fixing sleeve 32 is connected to the cold water inlet pipe 220. Cold water is discharged from the port of the first fixing sleeve 32. Figure 5 As shown, the protrusion 331 corresponds to the port of the first fixed sleeve 32. The first adjusting rod 33 drives the protrusion 331 to adjust the opening of the port of the first fixed sleeve 32. The sealing connection between the parts in this technical solution can be achieved by setting a sealing ring or a sealing gasket. Optionally, the first fixed sleeve 32 can also be set at the front end of the hot water inlet 21.

[0037] In this technical solution, cold water enters the first fixed sleeve 32 through the through hole 320 from the cold water inlet pipe 220. Since the outer wall of the first fixed sleeve 32 is sealed with the cold water outlet 22, the cold water can only be discharged from the port of the first fixed sleeve 32. The protrusion 331 is located between the port of the first fixed sleeve 32 and the hot water inlet 21 and adjusts the ratio of cold and hot water entering the mixing chamber 201 under the drive of the first stepper motor 31. This technical solution improves the stability and reliability of the system, and the structure is easy to install, disassemble and maintain.

[0038] In another technical solution, the mixing chamber 201 and the outlet chamber 202 are connected by a first passage 203. The flow valve core 4 includes a second fixing sleeve 42, which is a cylindrical structure detachably connected to the main valve body 2. A second stepper motor 41 is sealed and fixed to one end of the second fixing sleeve 42, and its output shaft is connected to one end of a second adjusting rod 43. The other end of the second adjusting rod 43 corresponds to and matches the port of the first passage 203. The second stepper motor 41 drives the second adjusting rod 43 to move axially horizontally. When the second adjusting rod 43 is moved, the end of the second adjusting rod 43 opens or blocks the first passage 203. In this technical solution, the end of the second adjusting rod 43 protrudes to form a plug 431 that matches the port of the first passage 203. When the plug 431 blocks the port of the first passage 203, the water path between the mixing chamber 201 and the outlet chamber 202 is blocked. The second stepper motor 41 is connected to the external control module and controls the distance between the plug 431 and the first passage 203 to adjust the water flow. The plug 431 can be blocked on the port on either side of the first passage 203.

[0039] In this technical solution, the second fixed sleeve 42 is detachably connected to the main valve body 2, which facilitates installation and maintenance and improves the reliability and service life of the system. The second stepper motor 41 has a high response speed and can quickly adjust the position of the plug 431, thereby rapidly changing the water flow. In contrast, the switching action of conventional solenoid valves is slower, especially when switching frequently, which can easily lead to delays or untimely responses. This technical solution is suitable for scenarios that require frequent flow adjustment.

[0040] In another technical solution, a magnetic impeller rotor 6 is installed inside the pipe cavity at the rear end of the outlet 23. A Hall sensor 61 corresponding to the position of the impeller rotor 6 is installed outside the main valve body 2. The impeller rotor 6 rotates under the impeller's rotational speed, which is proportional to the water flow rate, driven by the water flow through the outlet 23. Because the impeller rotor 6 is magnetic, it generates periodic magnetic field changes during rotation. The Hall sensor 61 can accurately measure the water flow rate by detecting the magnetic field changes generated by the rotation of the impeller rotor 6 and transmit the flow signal to an external control module, thereby precisely controlling the operation of the flow valve core 4.

[0041] In another technical solution, the angle between the outlet 23 and the first passage 203 is 90°. The water flow entering the outlet chamber 202 through the first passage 203 first impacts the inner wall of the outlet chamber 202 to prevent the valve core from opening too small and generating high-speed jet when the flow rate is low, which would affect the speed of the impeller and make the current flow rate test inaccurate.

[0042] In another technical solution, a second passage 204 is provided between the mixing chamber 201 and the outlet chamber 202. A manual valve core 7 is provided on the main valve body 2. The manual valve core 7 includes a third fixing sleeve 71 that is sealed to the main valve body 2. A screw rod 73 and an actuating head 72 are threadedly connected within the third fixing sleeve 71. One end of the actuating head 72 is slidably connected to the third fixing sleeve 71, and the other end blocks the port of the second passage 204. The screw rod 73 is rotatably fixed within the third fixing sleeve 71. When the screw rod 73 rotates, the actuating head 72 translates and separates from or blocks the port of the second passage 204. In this technical solution, to prevent the flow valve core 4 from stopping during a power outage, thus blocking the water flow between the mixing chamber 201 and the outlet chamber 202, a second passage 204 is provided for manual control. The third... A screw rod 73 is sealed and rotatably fixed in the fixed sleeve 71. One end of the screw rod 73 is located inside the third fixed sleeve 71 and has an external thread, while the other end extends outward and is connected to a handwheel 74. One end of the actuating head 72 is located inside the third fixed sleeve 71 and is fitted onto the end of the screw rod 73. The actuating head 72 is slidably connected to the third fixed sleeve 71 by conventional means such as a slot. The other end of the actuating head 72 is blocked at the port of the second passage 204. When a power outage causes the flow valve core 4 to malfunction, the handwheel 74 is manually turned to drive the screw rod 73 to rotate. Since the actuating head 72 can only move horizontally, it moves horizontally under the influence of the rotation of the screw rod 73 thread, thus releasing the blockage between the actuating head 72 and the second passage 204. This technical solution ensures that even in the event of a power outage or failure of the automatic control system, the user can still manually control the flow of water, avoiding a situation where the equipment is completely unusable, and improving the reliability and practicality of the equipment.

[0043] In another technical solution, a second temperature sensor 51 is also included. Its probe is set at the front end of the hot water inlet 21. The second temperature sensor 51 is connected to an external control module. On the one hand, it detects the difference between the hot water temperature and the mixed water temperature in the outlet chamber 202, so that the external control module can calculate the temperature difference between the two, and the temperature regulating valve core 3 can adjust faster and shorten the temperature regulation time. On the other hand, it prevents the first stepper motor 31 from being continuously powered on due to the hot water temperature not reaching the design temperature, which affects its lifespan and increases power consumption.

[0044] In another technical solution, a housing 1 is also included, in which the main valve body 2, the temperature regulating valve core 3, the flow valve core 4, and the manual valve core 7 are fixed. The cold water inlet pipe 220, the hot water inlet pipe 210, the water outlet 23, and the screw rod 73 pass through the corresponding through holes on the housing 1 and are sealed with the housing 1. The housing 1 is used to protect the main valve body 2, the temperature regulating valve core 3, the flow valve core 4, and other parts inside. The housing 1 can also encapsulate an external control module and a power supply device such as a battery. The exterior of the housing 1 is provided with several fixing pieces 10, which are convenient for personnel to install on the wall or other structures using bolts.

[0045] The number of devices and processing scale described herein are for the purpose of simplifying the description of this utility model. Applications, modifications, and variations of this utility model will be readily apparent to those skilled in the art.

[0046] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A thermostatic flow control valve characterized by, The utility model relates to a temperature control valve, including: A main valve body (2) is internally provided with mixed water chamber (201) and water outlet chamber (202) of intercommunication, the side wall of mixed water chamber (201) is provided with cold water inlet (22) and hot water inlet (21) oppositely, water outlet chamber (202) is connected with water outlet (23), the intercommunication of mixed water chamber (201) with water outlet chamber (202) is equipped with flow valve core (4) and controls waterway on-off; First temperature sensor (5), its probe is set up in water outlet chamber (202); Temperature control valve core (3) includes first step motor (31), the output shaft of first step motor (31) is connected with one end of first adjusting rod (33), the other end of first adjusting rod (33) is stretched into in mixed water chamber (201) and is formed with protruding portion (331), and the both ends of protruding portion (331) are respectively opposite with the port of cold water inlet (22), hot water inlet (21) and match, wherein, when first adjusting rod (33) axial translation, protruding portion (331) is separated or forms the plugging of cold water inlet (22), hot water inlet (21).

2. The thermostatic control valve according to claim 1, wherein Cold water inlet (22) and hot water inlet (21) are connected with cold water inlet pipe (220) and hot water inlet pipe (210) respectively, and check valve (8) is mounted in the water inlet end pipe orifice of cold water inlet pipe (220) and hot water inlet pipe (210).

3. The thermostatic control valve according to claim 2, wherein Temperature control valve core (3) further includes first fixed sleeve (32), first fixed sleeve (32) is the cylinder structure, and the inner chamber is communicated with the inner chamber of cold water inlet pipe (220), and first fixed sleeve (32) is equipped in the front end of cold water inlet (22), and one end of first fixed sleeve (32) is sealed and detachably connected with first step motor (31), first adjusting rod (33) is arranged in first fixed sleeve (32), and the port of near end of first fixed sleeve (32) is matched with protruding portion (331), wherein, when first adjusting rod (33) axial translation, protruding portion (331) is separated or forms the plugging of the port of first fixed sleeve (32).

4. The thermostatic control valve of claim 1, wherein Mixed water chamber (201) and water outlet chamber (202) are communicated through first passage (203), and flow valve core (4) includes second fixed sleeve (42), second fixed sleeve (42) is the cylinder structure that can be detachably connected with main valve body (2), and one end of second fixed sleeve (42) is fixedly provided with second step motor (41), and the output shaft of second step motor (41) is connected with one end of second adjusting rod (43), and the other end of second adjusting rod (43) corresponds with the port of first passage (203) and matches, wherein, when second step motor (41) drives second adjusting rod (43) axial translation, the end of second adjusting rod (43) opens or blocks first passage (203).

5. The thermostatic control valve of claim 1, wherein The pipe cavity of the rear end of water outlet (23) is provided with impeller rotor (6) with magnetism, and the outer of main valve body (2) is provided with hall sensor (61) corresponding with the position of impeller rotor (6).

6. The thermostatic control valve according to claim 5, wherein The included angle between water outlet (23) and first passage (203) is 90 degrees.

7. The thermostatic control valve of claim 4, wherein The water mixing cavity (201) and the water outlet cavity (202) are further provided with a second passage (204), the main valve body (2) is provided with a manual valve core (7), the manual valve core (7) comprises a third fixed sleeve (71) in sealing connection with the main valve body (2), a screw rod (73) and an actuating head (72) in thread connection with each other are matched and sealed in the third fixed sleeve (71), one end of the actuating head (72) is slidably connected in the third fixed sleeve (71), the other end blocks the port of the second passage (204), the screw rod (73) is rotatably fixed in the third fixed sleeve (71), wherein when the screw rod (73) rotates, the actuating head (72) translates and separates from or blocks the port of the second passage (204).

8. The thermostatic control valve of claim 1, wherein Further comprising a second temperature sensor (51), a probe of which is arranged at the front end of the hot water inlet (21).

9. The thermostatic control valve of claim 1, wherein Further comprising a shell (1), the main valve body (2), the temperature regulating valve core (3), the flow valve core (4), the manual valve core (7), the cold water inlet pipe (220), the hot water inlet pipe (210), the water outlet (23) and the screw rod (73) are fixed in the shell (1) respectively, and the shell (1) is provided with a sealing structure between the corresponding through holes and the shell (1).

Images