NTC temperature sensor for building automatic control system

Abstract

The invention relates to the technical field of NTC temperature sensors, and particularly discloses an NTC temperature sensor for a building automatic control system, which comprises a fixed sleeve, the fixed sleeve is provided with a cylindrical structure and a plugging port arranged at one end of the fixed sleeve, and the inner wall of the plugging port is slidably connected with an elastic sensing assembly; the elastic sensing assembly is made of a metal material with capacity, and different elastic sensing assemblies can be replaced according to different use environments, so that the sensor can be conveniently recycled; and the positioning assembly is arranged in the fixed sleeve, the positioning assembly is fixedly connected with the inner wall of the fixed sleeve, and the positioning assembly is used for positioning the elastic sensing assembly. According to the NTC temperature sensor for the building automatic control system, different elastic sensing assemblies can be replaced according to different use environments, and the sensor can be recycled conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of NTC temperature sensors, and specifically to an NTC temperature sensor for a building automation system. Background Art

[0002] An NTC temperature sensor is a kind of thermistor and probe. Its principle is: using an NTC thermistor, under a certain measurement power, the resistance value decreases rapidly as the temperature rises. Utilizing this characteristic, the NTC thermistor can be used to determine the corresponding temperature by measuring its resistance value, so as to achieve the purpose of detecting and controlling the temperature. It is usually composed of 2 or 3 metal oxides, mixed in a clay-like fluid, and sintered into a dense ceramic in a high-temperature furnace. The actual size is very flexible, and they can be as small as 0.010 inches or have a very small diameter. The maximum size has almost no limit.

[0003] However, the sensors currently in use usually can only be customized for different usage environments. When the usage environment changes, the corresponding sensors need to be replaced. Even if they can be recycled, the recycled sensors need to be reprocessed, which is not convenient for reusing the sensors. Summary of the Invention

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: an NTC temperature sensor for a building automation system, comprising:

[0005] A fixed sleeve, which has a cylindrical structure and an insertion port opened at one end. The inner wall of the insertion port is slidably connected with an elastic sensing component. The elastic sensing component is made of a capable metal material, and different elastic sensing components can be replaced according to different usage environments, which is convenient for recycling the sensor;

[0006] A positioning component, which is arranged inside the fixed sleeve. The positioning component is fixedly connected with the inner wall of the fixed sleeve, and the positioning component is used to position the elastic sensing component;

[0007] A thermistor, which is arranged inside the fixed sleeve at a position on one side of the positioning component. The thermistor is fixedly connected with the inner wall of the fixed sleeve;

[0008] A heat conduction component, which is fixed on the side of the thermistor close to the positioning component. The heat conduction component is fixedly connected with the inner wall of the fixed sleeve, and the side of the heat conduction component away from the thermistor contacts the elastic sensing component;

[0009] A lead wire, one end of which is arranged inside the fixed sleeve. The end of the lead wire located inside the fixed sleeve is electrically connected to the thermistor.

[0010] Preferably, the elastic sensing component includes a positioning post. Fixed slots are provided on both sides of the positioning post. One end of the positioning post is fixedly connected to a connection head. Metal elastic sheets are fixedly connected to both sides of the connection head. The end of the metal elastic sheet away from the connection head is fixedly connected to a heat-conducting elastic sheet, enabling the heat-conducting elastic sheet to contact the surface of the device to be detected as much as possible, thereby improving the heat-conducting efficiency. Moreover, the contact area is relatively large, which can avoid detection errors caused by different local temperatures, making the detection result more accurate. When it is necessary to detect the ambient temperature, the heat-conducting elastic sheet and the metal elastic sheet can also increase the contact area with the air environment, thus making the detection result more accurate.

[0011] Preferably, the positioning post is arranged inside the fixed sleeve, and the positioning post is slidably connected to the inner wall of the insertion port.

[0012] Preferably, the elastic sensing component can be replaced by a folding sensing component. The folding sensing component includes a positioning rod. Positioning slots are provided on both sides of the positioning rod. One end of the positioning rod is fixedly connected to a winding rod. A metal soft sheet is wound and fixedly connected to the winding rod, which is convenient for use in relatively narrow spaces. Moreover, the metal soft sheet can be wound around the winding rod, and the heat-conducting component is not easily damaged during storage. At the same time, the size of the narrow environment can be adapted by the amount of the unfolded metal soft sheet, and the adaptability is good, and the heat-conducting contact area can be expanded as much as possible according to the size of the narrow space.

[0013] Preferably, the positioning rod is arranged inside the fixed sleeve, and the positioning rod is slidably connected to the inner wall of the insertion port.

[0014] Preferably, the positioning component includes a positioning seat. A guiding piece is fixedly connected to one side of the positioning seat. A telescopic groove is provided at the end of the positioning seat. An arc-shaped clamping block is slidably connected to the inner wall of the telescopic groove. One end of the arc-shaped clamping block located inside the telescopic groove is fixedly connected to a telescopic spring. The end of the telescopic spring away from the arc-shaped clamping block is fixedly connected to the inner wall of the telescopic groove. During replacement, it can be directly plugged and unplugged, and the replacement operation is relatively convenient.

[0015] Preferably, the positioning seat is arranged inside the fixed sleeve and is fixedly connected to the inner wall of the fixed sleeve, and the guiding piece is inclined.

[0016] Preferably, the heat-conducting component includes a heat-conducting base. An arc-shaped elastic sheet is fixedly connected to one side of the heat-conducting base. The end of the arc-shaped elastic sheet away from the heat-conducting base is fixedly connected to a heat-conducting sleeve. The heat-conducting sleeve can be in close contact with the positioning post to improve the heat-conducting efficiency. Moreover, when the positioning post is inserted into the heat-conducting sleeve, the heat-conducting sleeve can wrap around the outside of the positioning post, so that the contact area between the heat-conducting sleeve and the positioning post is relatively large, which is convenient for heat conduction;

[0017] Preferably, the bottom of the heat-conducting base is fixedly connected to a thermistor, and multiple groups of arc-shaped elastic pieces are arranged and evenly distributed between the heat-conducting base and the heat-conducting sleeve.

[0018] It has the following beneficial effects:

[0019] 1. For the NTC temperature sensor used in the building automation system, since the elastic sensing component can slide inside the insertion interface and the elastic sensing component can be fixed by the positioning component, different elastic sensing components can be replaced according to different usage environments, which is convenient for recycling the sensor.

[0020] 2. When installing the elastic sensing component of the NTC temperature sensor used in the building automation system, insert the positioning post through the insertion interface onto the heat-conducting component inside the fixed sleeve, and fix the positioning post through the cooperation of the positioning component and the fixing groove to complete the installation of the elastic sensing component. Due to the arrangement of the heat-conducting elastic piece and the metal elastic piece, the heat-conducting elastic piece can be extruded onto the device whose temperature needs to be detected, and the heat-conducting elastic piece is pressed tightly through the elastic deformation of the heat-conducting elastic piece and the metal elastic piece, so that the heat-conducting elastic piece can contact the surface of the device to be detected as much as possible, thereby improving the heat-conducting efficiency. Moreover, the contact area is large, which can avoid the detection error caused by different local temperatures, making the detection result more accurate. When the ambient temperature needs to be detected, the contact area with the air environment can also be increased through the heat-conducting elastic piece and the metal elastic piece, thus making the detection result more accurate.

[0021] 3. When installing the folding sensing component of the NTC temperature sensor used in the building automation system, insert the positioning rod through the insertion interface onto the heat-conducting component inside the fixed sleeve, and fix the positioning rod through the cooperation of the positioning component and the positioning groove to complete the installation of the folding sensing component. When the temperature of a narrow space needs to be detected, the metal soft sheet can be unfolded from the winding rod, and then the metal soft sheet is driven by the winding rod to insert into the narrow space. The heat is conducted to the heat-conducting component through the metal soft sheet, and then conducted to the thermistor through the heat-conducting component, which is convenient for use in relatively narrow spaces. Moreover, the metal soft sheet can be wound around the winding rod, and the heat-conducting component is not easily damaged during storage. At the same time, the size of the narrow environment can be adapted by the amount of the unfolded metal soft sheet, with good adaptability, and the heat-conducting contact area can be expanded as much as possible according to the size of the narrow space.

[0022] 4. For the NTC temperature sensor used in the building automation control system, when the positioning post is inserted into the fixed sleeve through the insertion interface, the positioning post presses against the arc-shaped block. After being pressed, the arc-shaped block slides into the telescopic groove and compresses the telescopic spring. When the fixing groove on the positioning rod moves to a position directly opposite the arc-shaped block, under the elastic force of the telescopic spring, the arc-shaped block is pushed into the fixing groove. The positioning rod can be fixed by the cooperation of the arc-shaped block and the fixing groove. When replacement is needed, directly pull the positioning post. The positioning post drives the fixing groove to move, and the inner wall of the fixing groove presses against the arc-shaped block. After being pressed, the arc-shaped block slides into the telescopic groove and withdraws from the fixing groove, and then the positioning post can be pulled out. During replacement, direct plugging and unplugging can be carried out, and the replacement operation is relatively convenient.

[0023] 5. For the NTC temperature sensor used in the building automation control system, when the positioning post is inserted into the fixed sleeve, the end of the positioning post is inserted into the heat-conducting sleeve. As the positioning post is inserted and presses against the heat-conducting sleeve, the heat-conducting sleeve moves towards the heat-conducting base under the action of the pressing force and compresses the arc-shaped elastic piece. The heat-conducting sleeve can be pressed tightly on the positioning post through the elastic force of the arc-shaped elastic piece, so that the heat-conducting sleeve can be in close contact with the positioning post, improving the heat-conducting efficiency. And the positioning post inserted into the heat-conducting sleeve can make the heat-conducting sleeve wrap around the outside of the positioning post, so that the contact area between the heat-conducting sleeve and the positioning post is relatively large, facilitating heat conduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Structural schematic diagram of the NTC temperature sensor for the building automation control system of the present invention;

[0025] Figure 2 Structural schematic diagram of the inside of the fixed sleeve of the present invention;

[0026] Figure 3 Structural schematic diagram of the elastic sensing component of the present invention;

[0027] Figure 4 Structural schematic diagram of the folding sensing component of the present invention;

[0028] Figure 5 Structural schematic diagram of the positioning component of the present invention;

[0029] Figure 6 Structural schematic diagram of the inside of the telescopic groove of the present invention;

[0030] Figure 7 Structural schematic diagram of the heat-conducting component of the present invention.

[0031] In the figure: 1. Fixed sleeve; 2. Insertion interface; 3. Elastic sensing component; 31. Positioning column; 32. Fixed groove; 33. Connector; 34. Metal elastic sheet; 35. Heat-conducting elastic sheet; 4. Positioning component; 41. Positioning seat; 42. Guide piece; 43. Telescopic groove; 44. Arc-shaped clamping block; 45. Telescopic spring; 5. Thermistor; 6. Heat-conducting component; 61. Heat-conducting base; 62. Arc-shaped elastic sheet; 63. Heat-conducting sleeve; 7. Lead wire; 8. Folding sensing component; 81. Positioning rod; 82. Positioning groove; 83. Winding rod; 84. Metal flexible sheet. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1-4 , the present invention provides a technical solution: an NTC temperature sensor for a building automation system, including:

[0034] A fixed sleeve 1, which has a cylindrical structure and an insertion interface 2 opened at one end thereof. The inner wall of the insertion interface 2 is slidably connected with an elastic sensing component 3, and the elastic sensing component 3 is made of a capable metal material;

[0035] A positioning component 4, which is arranged inside the fixed sleeve 1, is fixedly connected with the inner wall of the fixed sleeve 1, and is used for positioning the elastic sensing component 3;

[0036] A thermistor 5, which is arranged inside the fixed sleeve 1 at a position on one side of the positioning component 4, and is fixedly connected with the inner wall of the fixed sleeve 1;

[0037] A heat-conducting component 6, which is fixed on the side of the thermistor 5 close to the positioning component 4, is fixedly connected with the inner wall of the fixed sleeve 1, and the side of the heat-conducting component 6 away from the thermistor 5 is in contact with the elastic sensing component 3;

[0038] A lead wire 7, one end of which is arranged inside the fixed sleeve 1, and the end of the lead wire 7 located inside the fixed sleeve 1 is electrically connected with the thermistor 5;

[0039] Since the elastic sensing component 3 can slide inside the insertion interface 2 and the elastic sensing component 3 can be fixed by the positioning component 4, different elastic sensing components 3 can be replaced according to different usage environments, which is convenient for recycling the sensor.

[0040] The elastic sensing component 3 includes a positioning post 31. Fixing grooves 32 are provided on both sides of the positioning post 31. One end of the positioning post 31 is fixedly connected to a connection head 33. Metal elastic sheets 34 are fixedly connected to both sides of the connection head 33. One end of the metal elastic sheet 34 away from the connection head 33 is fixedly connected to a heat-conducting elastic sheet 35. The positioning post 31 is arranged inside the fixed sleeve 1, and the positioning post 31 is slidably connected to the inner wall of the insertion interface 2;

[0041] When installing the elastic sensing component 3, insert the positioning post 31 through the insertion interface 2 onto the heat-conducting component 6 inside the fixed sleeve 1, and fix the positioning post 31 by means of the positioning component 4 cooperating with the fixing groove 32, then the installation of the elastic sensing component 3 can be completed. Due to the provision of the heat-conducting elastic sheet 35 and the metal elastic sheet 34, the heat-conducting elastic sheet 35 can be pressed against the device whose temperature needs to be detected. Through the extrusion force, the heat-conducting elastic sheet 35 is tightly pressed. Through the elastic deformation of the heat-conducting elastic sheet 35 and the metal elastic sheet 34, the heat-conducting elastic sheet 35 can contact as much as possible with the surface of the device to be detected, thereby improving the heat-conducting efficiency, and the contact area is relatively large, which can avoid the detection error caused by different local temperatures, making the detection result more accurate. When the ambient temperature needs to be detected, the contact area with the air environment can also be increased through the heat-conducting elastic sheet 35 and the metal elastic sheet 34, thereby making the detection result more accurate.

[0042] The elastic sensing component 3 can also be replaced by a folding sensing component 8. The folding sensing component 8 includes a positioning rod 81. Positioning grooves 82 are provided on both sides of the positioning rod 81. One end of the positioning rod 81 is fixedly connected to a winding rod 83. A metal flexible sheet 84 is wound and fixedly connected to the winding rod 83. The positioning rod 81 is arranged inside the fixed sleeve 1, and the positioning rod 81 is slidably connected to the inner wall of the insertion interface 2;

[0043] When installing the folding sensing component 8, insert the positioning rod 81 through the insertion interface 2 onto the heat-conducting component 6 inside the fixed sleeve 1, and fix the positioning rod 81 by means of the positioning component 4 cooperating with the positioning groove 82, then the installation of the folding sensing component 8 can be completed. When the temperature of a narrow space needs to be detected, the metal flexible sheet 84 can be unfolded from the winding rod 83, and then the metal flexible sheet 84 is driven by the winding rod 83 to be inserted into the narrow space. The heat is conducted to the heat-conducting component 6 through the metal flexible sheet 84, and the heat is conducted to the thermistor 5 through the heat-conducting component 6, which is convenient for use in a relatively narrow space. And the metal flexible sheet 84 can be wound on the winding rod 83. When stored, the heat-conducting component is not easily damaged. At the same time, the size of the narrow environment can be adapted by the amount of the metal flexible sheet 84 unfolded, and the adaptability is good, and the heat-conducting contact area can be expanded as much as possible according to the size of the narrow space.

[0044] Please refer to Figures 1-6, the present invention provides a technical solution: The positioning component 4 includes a positioning seat 41. One side of the positioning seat 41 is fixedly connected with a guiding piece 42. An expansion slot 43 is opened at the end of the positioning seat 41. An arc-shaped clamping block 44 is slidably connected to the inner wall of the expansion slot 43. One end of the arc-shaped clamping block 44 located inside the expansion slot 43 is fixedly connected with an expansion spring 45. The end of the expansion spring 45 away from the arc-shaped clamping block 44 is fixedly connected with the inner wall of the expansion slot 43. The positioning seat 41 is arranged inside the fixed sleeve 1 and fixedly connected with the inner wall of the fixed sleeve 1. The guiding piece 42 is inclined;

[0045] When the positioning post 31 is inserted into the fixed sleeve 1 through the insertion port 2, the positioning post 31 presses against the arc-shaped clamping block 44. After being pressed, the arc-shaped clamping block 44 slides into the expansion slot 43 and compresses the expansion spring 45. When the fixing groove 32 on the positioning post 31 moves to a position opposite to the arc-shaped clamping block 44, under the elastic force of the expansion spring 45, the arc-shaped clamping block 44 is pushed into the fixing groove 32. The positioning post 31 can be fixed by the cooperation of the arc-shaped clamping block 44 and the fixing groove 32. When replacement is needed, directly pull the positioning post 31. The positioning post 31 drives the fixing groove 32 to move. The inner wall of the fixing groove 32 presses against the arc-shaped clamping block 44. After being pressed, the arc-shaped clamping block 44 slides into the expansion slot 43 and withdraws from the fixing groove 32, and then the positioning post 31 can be pulled out. During replacement, it can be directly inserted and pulled out, and the replacement operation is relatively convenient.

[0046] Please refer to Figures 1-7 , the present invention provides a technical solution: The heat-conducting component 6 includes a heat-conducting base 61. One side of the heat-conducting base 61 is fixedly connected with an arc-shaped elastic piece 62. One end of the arc-shaped elastic piece 62 away from the heat-conducting base 61 is fixedly connected with a heat-conducting sleeve 63. The bottom of the heat-conducting base 61 is fixedly connected with the thermistor 5. A plurality of groups of arc-shaped elastic pieces 62 are provided and evenly distributed between the heat-conducting base 61 and the heat-conducting sleeve 63;

[0047] When the positioning post 31 is inserted into the fixed sleeve 1, the end of the positioning post 31 is inserted into the heat-conducting sleeve 63. As the positioning post 31 is inserted and presses against the heat-conducting sleeve 63, the heat-conducting sleeve 63 moves towards the heat-conducting base 61 under the action of the pressing force and compresses the arc-shaped elastic piece 62. The heat-conducting sleeve 63 can be pressed tightly against the positioning post 31 through the elastic force of the arc-shaped elastic piece 62, so that the heat-conducting sleeve 63 can be in close contact with the positioning post 31, improving the heat-conducting efficiency. And the positioning post 31 being inserted into the heat-conducting sleeve 63 enables the heat-conducting sleeve 63 to wrap around the outside of the positioning post 31, so that the contact area between the heat-conducting sleeve 63 and the positioning post 31 is relatively large, facilitating heat conduction.

[0048] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments in the present invention without creative efforts shall fall within the scope of protection of the present invention. Structures, devices, and operation methods not specifically described and explained in the present invention, unless otherwise specified and limited, are implemented according to the conventional means in the art.

Claims

1. An NTC temperature sensor for a building automation system, characterized in that: include: A fixed sleeve (1), the fixed sleeve (1) having a cylindrical structure and an insertion port (2) provided at one end thereof, the inner wall of the insertion port (2) being slidably connected to an elastic sensor component (3), the elastic sensor component (3) being made of a metal material having a capacity; A positioning component (4), the positioning component (4) being arranged inside the fixed sleeve (1), the positioning component (4) being fixedly connected to the inner wall of the fixed sleeve (1), and the positioning component (4) being used to position the elastic sensor component (3); a thermistor (5), the thermistor (5) being arranged inside the fixed sleeve (1) at a position on one side of the positioning assembly (4), the thermistor (5) being fixedly connected to the inner wall of the fixed sleeve (1); A heat-conducting component (6), the heat-conducting component (6) being fixed to a side of the thermistor (5) close to the positioning component (4), the heat-conducting component (6) being fixedly connected to an inner wall of the fixed sleeve (1), and the side of the heat-conducting component (6) away from the thermistor (5) being in contact with the elastic sensing component (3); A lead wire (7), one end of which is arranged inside the fixed sleeve (1), and the end of the lead wire (7) located inside the fixed sleeve (1) is electrically connected to the thermistor (5).

2. The NTC temperature sensor for a building automation system according to claim 1, characterized in that: The elastic sensor assembly (3) comprises a positioning column (31), both sides of the positioning column (31) are provided with fixing grooves (32), one end of the positioning column (31) is fixedly connected to a connector (33), both sides of the connector (33) are fixedly connected to metal springs (34), and one end of the metal spring (34) away from the connector (33) is fixedly connected to a heat-conducting spring (35).

3. The NTC temperature sensor for a building automation system according to claim 2, characterized in that: The positioning column (31) is arranged inside the fixed sleeve (1), and the positioning column (31) is slidably connected to the inner wall of the plug-in port (2).

4. The NTC temperature sensor for a building automation system according to claim 1, characterized in that: The elastic sensor assembly (3) can also be replaced by a folding sensor assembly (8), wherein the folding sensor assembly (8) comprises a positioning rod (81), positioning grooves (82) are provided on both sides of the positioning rod (81), one end of the positioning rod (81) is fixedly connected to a winding rod (83), and a metal soft film (84) is wound around and fixedly connected to the winding rod (83).

5. The NTC temperature sensor for a building automation system according to claim 4, characterized in that: The positioning rod (81) is arranged inside the fixed sleeve (1), and the positioning rod (81) is slidably connected to the inner wall of the insertion port (2).

6. The NTC temperature sensor for a building automation system according to claim 1, characterized in that: The positioning assembly (4) comprises a positioning seat (41), one side of the positioning seat (41) is fixedly connected to a guide piece (42), an end of the positioning seat (41) is provided with a telescopic groove (43), an inner wall of the telescopic groove (43) is slidably connected to an arc-shaped clamping block (44), one end of the arc-shaped clamping block (44) located inside the telescopic groove (43) is fixedly connected to a telescopic spring (45), and one end of the telescopic spring (45) away from the arc-shaped clamping block (44) is fixedly connected to the inner wall of the telescopic groove (43).

7. The NTC temperature sensor for a building automation system according to claim 6, characterized in that: The positioning seat (41) is arranged inside the fixed sleeve (1) and is fixedly connected to the inner wall of the fixed sleeve (1), and the guide piece (42) is arranged at an angle.

8. The NTC temperature sensor for a building automation system according to claim 1, characterized in that: The heat-conducting assembly (6) comprises a heat-conducting base (61), one side of the heat-conducting base (61) is fixedly connected to an arc-shaped spring sheet (62), and one end of the arc-shaped spring sheet (62) away from the heat-conducting base (61) is fixedly connected to a heat-conducting sleeve (63).

9. The NTC temperature sensor for a building automation system according to claim 8, characterized in that: The bottom of the heat-conducting base (61) is fixedly connected to the thermistor (5), and the arc-shaped spring sheets (62) are provided in multiple groups and are evenly distributed between the heat-conducting base (61) and the heat-conducting sleeve (63).

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