Energy-saving temperature control valve with built-in center temperature sensor for heating

Abstract

The utility model provides a kind of energy-saving temperature control valve of heating general purpose with built-in center temperature measurement sensor, including main component, the main component includes valve shell, accommodating cavity, sensor probe, metal heat conduction sheet, valve controller shell, main control board, signal line, screw hole, valve stem, valve core main body and step motor.The utility model is inbuilt in the accommodating cavity of valve shell bottom center by sensor probe, in combination with the metal heat conduction sheet of top portion directly contact with medium, avoid external environment interference, realize the real-time accurate collection to medium temperature, solve the problem of traditional temperature control valve external sensor temperature measurement lag, low precision;Through main control board receiving sensor real-time data, drive step motor drive valve stem and valve core main body accurate adjustment water stop head and water stop hole gap, and cooperate the sealing design of valve core cavity and sealing ring, realize the accurate control of flow, solve the problem of traditional temperature control valve due to inaccurate adjustment resulting in heat waste, reduce energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning technology, and in particular to a heating and air conditioning energy-saving thermostatic valve with a built-in central temperature sensor. Background Technology

[0002] In HVAC and centralized heating systems, thermostatic valves are core components for regulating heat transfer fluid flow and maintaining stable indoor temperatures. Their control accuracy and response speed directly affect heating comfort and energy efficiency. With the increasing demands for energy conservation and emission reduction and the development of intelligent heating technologies, the performance bottlenecks of traditional thermostatic valves in terms of temperature monitoring accuracy and adjustment timeliness have become increasingly apparent, making it difficult to meet the demands of modern heating systems for precise temperature control and energy-saving operation.

[0003] Traditional HVAC thermostatic valves typically rely on external temperature sensors for temperature monitoring. However, these external sensors are susceptible to interference from their installation location and the environment, making it impossible for them to accurately reflect the temperature of the medium inside the valve body in real time. This results in a delayed temperature control response and low adjustment accuracy. Furthermore, inaccurate temperature control leads to imprecise valve opening adjustments, which can easily cause heat waste. This is particularly evident in centralized heating systems, where energy consumption is a significant issue. Therefore, a HVAC energy-saving thermostatic valve with a built-in central temperature sensor is proposed. Utility Model Content

[0004] In view of this, the present invention aims to provide a universal energy-saving thermostatic valve for heating systems with a built-in central temperature sensor, so as to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial alternative.

[0005] The technical solution of this utility model embodiment is implemented as follows: a general-purpose energy-saving thermostatic valve for heating with built-in central temperature sensor, including a main component, the main component including a valve shell, a accommodating cavity, a sensor probe, a metal heat-conducting sheet, a valve controller shell, a main control board, a signal line, a threaded hole, a valve stem, a valve core body and a stepper motor; A receiving cavity is provided at the center of the bottom of the inner wall of the valve housing. A sensor probe is fixedly connected to the inner wall of the receiving cavity. A metal heat-conducting plate is provided at the center of the top of the sensor probe. A valve controller housing is fixedly connected to the outer top of the valve housing. A main control board is provided at the top of the inner wall of the valve controller housing. The output end of the sensor probe is electrically connected to the input end of the main control board through a signal line. A threaded hole is opened at the center of the top of the valve housing. A valve stem is threadedly connected to the inner wall of the threaded hole. A valve core body is fixedly connected to the bottom of the valve stem. A stepper motor is provided inside the valve controller housing. The top of the valve stem is fixedly connected to the output end of the stepper motor. The input end of the stepper motor is electrically connected to the output end of the main control board.

[0006] More preferably, a water-stop head is fixedly connected to the bottom of the valve core body, a water-stop hole is provided inside the valve shell, and the lower part of the outer side wall of the water-stop head is attached to the inner side wall of the water-stop hole.

[0007] More preferably, a valve core cavity is provided at the top center of the inner sidewall of the valve housing, the outer sidewall of the valve core body is fitted and connected to the inner sidewall of the valve core cavity, and two annular sealing grooves are provided on the upper part of the outer sidewall of the valve core body. A sealing ring is fixedly connected to the inner sidewall of each of the two annular sealing grooves, and the outer sidewall of the sealing ring is fitted and connected to the inner sidewall of the valve core cavity.

[0008] More preferably, the inner wall of the valve controller housing is provided with multiple limiting grooves, and the outer wall of the stepper motor is fixedly connected with multiple limiting sliders, the outer wall of the limiting sliders being slidably connected to the inner wall of the limiting grooves.

[0009] More preferably, a display screen is provided at the center of the upper surface of the valve controller housing, and multiple control buttons are provided at the front of the upper surface of the valve controller housing.

[0010] More preferably, a wire passage is provided on one side of the inside of the valve housing, and the signal line passes through the inside of the wire passage.

[0011] More preferably, the valve body is provided with an inlet connector and an outlet connector at both ends.

[0012] More preferably, a hexagonal truncated pyramid is provided on the outer wall of the valve housing near the water inlet connector.

[0013] The present invention has the following advantages due to the adoption of the above technical solution: 1. This utility model integrates the sensor probe into the cavity at the bottom center of the valve body, and combines it with the metal heat-conducting plate at the top to directly contact the flowing medium, avoiding external environmental interference and achieving real-time and accurate acquisition of the medium temperature. This solves the problems of lag and low accuracy in temperature measurement by external sensors in traditional temperature control valves. 2. This utility model receives real-time data from sensors through the main control board, drives the stepper motor to move the valve stem and valve core body to precisely adjust the gap between the stop head and the stop hole, and, in conjunction with the sealing design of the valve core cavity and the sealing ring, achieves precise flow control, solving the problem of heat waste caused by inaccurate adjustment in traditional temperature control valves and reducing energy consumption.

[0014] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural view of the present invention from one perspective; Figure 2 This is another structural view of the present invention; Figure 3 This is a cross-sectional view of the present invention. Figure 4 This is a cross-sectional view of the present invention.

[0017] Reference numerals: 1. Main component; 11. Valve housing; 12. Receptacle cavity; 13. Sensor probe; 14. Metal heat-conducting plate; 15. Valve controller housing; 16. Main control board; 17. Signal line; 18. Threaded hole; 19. Valve stem; 20. Valve core body; 21. Stepper motor; 22. Water stop head; 23. Water stop hole; 24. Valve core cavity; 25. Annular sealing groove; 26. Sealing ring; 27. Limiting groove; 28. Limiting slider; 29. ​​Display screen; 30. Control button; 31. Wiring channel; 32. Inlet connector; 33. Outlet connector; 34. Hexagonal truncated pyramid. Detailed Implementation

[0018] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] like Figures 1-4 As shown, this utility model embodiment provides a general-purpose energy-saving thermostatic valve for heating with a built-in center temperature sensor, including a main component 1. The main component 1 includes a valve shell 11, a receiving cavity 12, a sensor probe 13, a metal heat-conducting sheet 14, a valve controller housing 15, a main control board 16, a signal line 17, a threaded hole 18, a valve stem 19, a valve core body 20, and a stepper motor 21. A receiving cavity 12 is provided at the center of the bottom of the inner wall of the valve housing 11. A sensor probe 13 is fixedly connected to the inner wall of the receiving cavity 12. A metal heat-conducting plate 14 is provided at the center of the top of the sensor probe 13. A valve controller housing 15 is fixedly connected to the outer top of the valve housing 11. A main control board 16 is provided at the top of the inner wall of the valve controller housing 15. The output terminal of the sensor probe 13 is electrically connected to the input terminal of the main control board 16 through a signal line 17. A threaded hole 18 is provided at the center of the top of the valve housing 11. A valve stem 19 is threadedly connected to the inner wall of the threaded hole 18. A valve core body 20 is fixedly connected to the bottom of the valve stem 19. A stepper motor 21 is installed inside the valve controller housing 15. The top of the valve stem 19 is fixedly connected to the output end of the stepper motor 21. The input end of the stepper motor 21 is electrically connected to the output end of the main control board 16. The valve stem 19 is threadedly connected to the threaded hole 18 on the top of the valve housing 11. Thus, when the stepper motor 21 drives the valve stem 19 to rotate, it drives the valve core body 20 to move up and down.

[0021] In one embodiment, specifically: a water-stop head 22 is fixedly connected to the bottom of the valve core body 20, a water-stop hole 23 is provided inside the valve shell 11, and the lower part of the outer side wall of the water-stop head 22 is attached to the inner side wall of the water-stop hole 23. Through the cooperation between the water-stop head 22 and the water-stop hole 23, the flow rate of the medium can be easily adjusted.

[0022] In one embodiment, specifically: a valve core cavity 24 is provided at the top center of the inner sidewall of the valve housing 11, the outer sidewall of the valve core body 20 is fitted to the inner sidewall of the valve core cavity 24, and two annular sealing grooves 25 are provided on the upper part of the outer sidewall of the valve core body 20. A sealing ring 26 is fixedly connected to the inner sidewall of each of the two annular sealing grooves 25. The outer sidewall of the sealing ring 26 is fitted to the inner sidewall of the valve core cavity 24. The gap between the valve housing 11 and the valve core body 20 is sealed by the two sealing rings 26, thereby preventing media leakage.

[0023] In one embodiment, specifically: the inner sidewall of the valve controller housing 15 is provided with multiple limiting grooves 27, and the outer sidewall of the stepper motor 21 is fixedly connected with multiple limiting sliders 28. The outer sidewall of the limiting slider 28 is slidably connected to the inner sidewall of the limiting groove 27. By the limiting slider 28 on the stepper motor 21 sliding inside the limiting groove 27, the limiting slider 28 is limited, thereby increasing the stability of the stepper motor 21 moving up and down.

[0024] In one embodiment, specifically: a display screen 29 is provided at the center of the upper surface of the valve controller housing 15, and multiple control buttons 30 are provided at the front of the upper surface of the valve controller housing 15. The display screen 29 facilitates the real-time display of the current medium temperature, target temperature and valve opening (e.g., 0-100%). Users can adjust the target temperature or switch the working mode (e.g., energy-saving mode, standard mode) at any time through the control buttons 30.

[0025] In one embodiment, specifically: a wire passage 31 is provided on one side of the inner side of the valve housing 11, and the signal line 17 passes through the inside of the wire passage 31; wherein, the sealing design of the wire passage 31 can prevent the medium from seeping in and protect the signal line 17 from corrosion.

[0026] In one embodiment, specifically: the valve body 11 is provided with an inlet connector 32 and an outlet connector 33 at both ends, respectively. The inlet connector 32 facilitates connection to the outlet pipe of the heating system, and the outlet connector 33 facilitates connection to the inlet pipe of the indoor heat dissipation equipment.

[0027] In one embodiment, specifically: a hexagonal truncated pyramid 34 is provided on the outer side wall of the valve housing 11 near the water inlet connector 32. The hexagonal truncated pyramid 34 on the outer side of the valve housing 11 facilitates clamping and fixing with a wrench, preventing the valve housing 11 from rotating during installation.

[0028] When this utility model is in operation: After the thermostatic valve is installed in the HVAC piping system, the inlet connector 32 is connected to the outlet pipe of the heating system, and the outlet connector 33 is connected to the inlet end of the indoor heat dissipation equipment (such as radiators), forming a flow path for the medium (hot water or heat medium); the user sets the target temperature (such as 22℃) through the control button 30 on the valve controller housing 15, and the set parameter is displayed on the display screen 29 in real time, and the main control board 16 stores the target temperature as a reference value; at this time, the valve core body 20 is in the initial opening state: the stop head 22 and the stop hole 23 maintain a certain gap, and the medium can enter the valve housing 11 from the inlet connector 32, flow through the stop hole 23 to the outlet connector 33, and complete the process. The heat transfer medium circulates; when the medium flows inside the valve housing 11, it flows through the metal heat-conducting plate 14 above the accommodating cavity 12. The metal heat-conducting plate 14 is in direct contact with the medium. Due to its high thermal conductivity (e.g., using brass), it can quickly transfer the medium temperature to the sensor probe 13. The sensor probe 13 (e.g., an NTC thermistor or PT100) converts the temperature signal into an electrical signal (resistance change or voltage change), which is transmitted to the main control board 16 inside the valve controller housing 15 through the signal line 17 in the wiring channel 31. After receiving the real-time temperature signal from the sensor probe 13, the main control board 16 compares and calculates the real-time temperature with the target temperature set by the user through a built-in algorithm (e.g., a PID control algorithm). If the real-time temperature is lower than the target temperature (e.g., 20℃ < 22℃), the main control board 16 determines that the heat transfer medium flow needs to be increased and generates a "valve open" command. If the real-time temperature is higher than the target temperature (e.g., 24℃ > 22℃), the main control board 16 determines that the heat transfer medium flow needs to be reduced and generates a "valve shut-off" command. If the difference between the real-time temperature and the target temperature is within the allowable range (e.g., ±0.5℃), the main control board 16 maintains the current valve opening and does not send adjustment commands. The main control board 16 converts the instructions into electrical signals and transmits them to the stepper motor 21. The stepper motor 21 then rotates forward or in reverse according to the instructions. Valve opening process: Stepper motor 21 rotates forward, driving valve stem 19 to rotate synchronously through output shaft. Since valve stem 19 is threadedly connected to threaded hole 18 on top of valve body 11, rotational motion is converted into upward linear motion. Valve stem 19 drives valve core body 20 to move upward. At this time, the gap between water stop head 22 and water stop hole 23 increases, the medium flow cross-sectional area increases, the heat medium flow increases, and the heat supply of heat dissipation equipment is improved. Valve closing process: Stepper motor 21 reverses, valve stem 19 drives valve core body 20 to move downward, water stop head 22 gradually approaches and squeezes water stop hole 23, flow gap decreases, heat medium flow decreases, and heat supply decreases; During this process, the limiting groove 27 on the inner side of the valve controller housing 15 cooperates with the limiting slider 28 on the outer side of the stepper motor 21 to restrict the stepper motor 21 to move stably only along the axial direction, thus avoiding deviation during rotation; the valve core body 20 slides in the valve core cavity 24, and the outer sealing ring 26 (such as silicone rubber) fits tightly against the inner wall of the valve core cavity 24 to prevent the medium from leaking from the gap between the valve core body 20 and the valve housing 11, thus ensuring adjustment accuracy; As the flow rate of the heat transfer medium is adjusted, the medium temperature gradually approaches the target temperature. Sensor probe 13 continuously collects temperature signals and feeds them back to the main control board 16, forming a real-time closed-loop control. When the real-time temperature stabilizes within ±0.5℃ of the target temperature, the main control board 16 stops driving the stepper motor 21, and the valve maintains its current opening. If the medium temperature deviates from the target value again due to changes in the external environment (such as a sudden drop in outdoor temperature or fluctuations in inlet water temperature), the sensor probe 13 will quickly capture the change (response time ≤ 0.5s) and repeat the above adjustment process until the temperature stabilizes again.

[0029] Through the above-mentioned collaborative work, this utility model realizes full-process automation of "real-time temperature monitoring → precise flow regulation → closed-loop stable temperature control", which improves the response speed by more than 30% compared with traditional temperature control valves, and the temperature control accuracy can reach ±0.5℃. At the same time, it reduces ineffective energy consumption through dynamic adjustment, thereby achieving energy-saving effect.

[0030] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A universal energy-saving thermostatic valve for heating systems with a built-in central temperature sensor, characterized in that: The main component (1) includes a valve housing (11), a receiving cavity (12), a sensor probe (13), a metal heat-conducting sheet (14), a valve controller housing (15), a main control board (16), a signal line (17), a threaded hole (18), a valve stem (19), a valve core body (20), and a stepper motor (21). A receiving cavity (12) is provided at the center of the bottom of the inner wall of the valve housing (11). A sensor probe (13) is fixedly connected to the inner wall of the receiving cavity (12). A metal heat-conducting plate (14) is provided at the center of the top of the sensor probe (13). A valve controller housing (15) is fixedly connected to the outer top of the valve housing (11). A main control board (16) is provided at the top of the inner wall of the valve controller housing (15). The output end of the sensor probe (13) is electrically connected to the signal line (17). The main control board (16) has a threaded hole (18) at the top center of the valve housing (11). The inner wall of the threaded hole (18) is threaded with a valve stem (19). The bottom of the valve stem (19) is fixedly connected to a valve core body (20). A stepper motor (21) is installed inside the valve controller housing (15). The top of the valve stem (19) is fixedly connected to the output end of the stepper motor (21). The input end of the stepper motor (21) is electrically connected to the output end of the main control board (16).

2. The universal energy-saving thermostatic valve for heating systems with a built-in center temperature sensor as described in claim 1, characterized in that: A water-stop head (22) is fixedly connected to the bottom of the valve core body (20), and a water-stop hole (23) is provided inside the valve shell (11). The lower part of the outer side wall of the water-stop head (22) is attached to the inner side wall of the water-stop hole (23).

3. A universal energy-saving thermostatic valve for heating systems with a built-in center temperature sensor as described in claim 1, characterized in that: A valve core cavity (24) is provided at the center of the top of the inner sidewall of the valve housing (11). The outer sidewall of the valve core body (20) is attached to the inner sidewall of the valve core cavity (24). Two annular sealing grooves (25) are provided on the upper part of the outer sidewall of the valve core body (20). A sealing ring (26) is fixedly connected to the inner sidewall of each of the two annular sealing grooves (25). The outer sidewall of the sealing ring (26) is attached to the inner sidewall of the valve core cavity (24).

4. A universal energy-saving thermostatic valve for heating systems with a built-in center temperature sensor as described in claim 1, characterized in that: The inner wall of the valve controller housing (15) is provided with multiple limiting grooves (27), and the outer wall of the stepper motor (21) is fixedly connected with multiple limiting sliders (28). The outer wall of the limiting sliders (28) is slidably connected to the inner wall of the limiting grooves (27).

5. A universal energy-saving thermostatic valve for heating systems with a built-in center temperature sensor as described in claim 1, characterized in that: A display screen (29) is provided at the center of the upper surface of the valve controller housing (15), and multiple control buttons (30) are provided at the front of the upper surface of the valve controller housing (15).

6. A universal energy-saving thermostatic valve for heating systems with a built-in center temperature sensor as described in claim 1, characterized in that: A wire channel (31) is provided on one side of the inside of the valve body (11), and the signal line (17) passes through the inside of the wire channel (31).

7. A universal energy-saving thermostatic valve for heating systems with a built-in center temperature sensor as described in claim 6, characterized in that: The valve body (11) is provided with an inlet connector (32) and an outlet connector (33) at both ends.

8. A universal energy-saving thermostatic valve for heating systems with a built-in center temperature sensor as described in claim 6, characterized in that: A hexagonal truncated pyramid (34) is provided on the outer side wall of the valve body (11) near the water inlet connector (32).

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