Quick-response temperature sensor

Abstract

The utility model relates to the technical field of temperature sensors, and one embodiment of the utility model provides a quick-response temperature sensor which comprises a junction box, a protection tube and a temperature measurement core body, the temperature measurement core body is arranged in the protection tube, the quick-response temperature sensor further comprises a protruding box, a communication hole, a heat conduction mechanism and a sealing mechanism, the protruding box is fixedly connected to the bottom end of the protection tube, and the communication hole is communicated with the heat conduction mechanism. An exposed opening is formed in the bottom end of the protruding box, the communicating hole is formed in the bottom end of the protection pipe and communicates with a cavity in the protruding box, the temperature measuring core body is arranged in the communicating hole and the exposed opening, the heat conduction mechanism is arranged in the protection pipe, and the sealing mechanism is arranged in the protruding box. The technical problem that in the prior art, heat needs to pass through a metal rod and air and then is transmitted to a temperature sensing resistor, so that the sensor can sense the surrounding temperature for a long time, and the response speed of the temperature sensor is low is solved.

Description

Technical Field

[0001] Embodiments of this disclosure relate to the field of temperature sensor technology, and more specifically, to a fast-response temperature sensor. Background Technology

[0002] Temperature sensors detect temperature and convert it into a usable output signal, making them crucial in environments requiring rapid response to temperature changes (such as industrial exhaust systems). To determine whether flue gas emissions meet standards based on temperature, sensors must quickly monitor temperature variations.

[0003] However, most existing temperature sensors place the temperature-sensing resistor at the end of a metal rod. When detecting ambient temperature, the surrounding heat must pass through the metal rod and the air before it can be transferred to the temperature-sensing resistor. This process takes a long time, making the sensor slow to sense temperature and slow to respond, which makes it difficult to meet the needs of rapid temperature monitoring. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide a fast-response temperature sensor, which solves the technical problem that in the prior art, heat needs to pass through a metal rod and air before it reaches the temperature sensing resistor, thus requiring a long time for the sensor to sense the ambient temperature, resulting in a slow response speed of the temperature sensor.

[0005] According to one aspect, at least one embodiment of the present disclosure provides a fast-response temperature sensor, including a junction box, a protective tube, and a temperature sensing core disposed inside the protective tube, and further including: a protruding box, a connecting hole, a heat conduction mechanism, and a sealing mechanism;

[0006] The protruding box is fixedly connected to the bottom end of the protective tube, and the bottom end of the protruding box has an exposed opening;

[0007] The connecting hole is located at the bottom of the protective tube and communicates with the cavity inside the protruding box. The temperature measuring core is disposed in the connecting hole and the exposed opening.

[0008] The heat conduction mechanism is installed inside the protective tube and is used to transfer external heat to the temperature measuring core.

[0009] The sealing mechanism is located inside the protruding box and is used to seal the connecting hole and the cavity inside the protective tube.

[0010] Preferably, the heat-conducting mechanism includes: a heat-conducting ring, a heat-conducting plate, a transfer plate, and a connecting groove;

[0011] The heat-conducting ring is sleeved on the circumferential surface of the temperature-sensing core;

[0012] The heat-conducting plate is provided in multiple ways, and the multiple heat-conducting plates are distributed in a circle and fixedly connected to the circumferential surface of the heat-conducting ring;

[0013] A transfer plate is fixedly connected to the other end of each of the heat-conducting plates;

[0014] The connecting groove is provided in multiple ways, and the multiple connecting grooves are arranged in a circle inside the protective tube. Each connecting groove is provided with a transfer plate.

[0015] In order to seal the cavity inside the protective tube, the sealing mechanism includes: a support plate and thermally conductive silicone grease;

[0016] The support plate is provided in multiple ways, and the multiple support plates are all circularly distributed and fixedly connected to the inner circumference of the protruding box. The other end of the multiple support plates is in contact with the temperature measuring core.

[0017] The thermal grease is filled inside the protrusion box.

[0018] In order to connect the protective tube to the transfer plate, heat-conducting grooves are distributed in a circular pattern on the circumferential surface of the protective tube, and each heat-conducting groove corresponds to a connecting groove.

[0019] In order to fix the temperature measuring core inside the exposed opening, the diameter of the exposed opening is the same as the diameter of the temperature measuring core.

[0020] To improve thermal conductivity, the heat-conducting ring, heat-conducting plate, transfer plate, and support plate are all made of metal.

[0021] The beneficial effects of the embodiments disclosed herein are as follows:

[0022] 1. In this disclosure, by setting up a heat conduction mechanism and placing the temperature measuring core at the exposed opening, one end of the temperature measuring core is exposed to the outside, thereby enabling the high temperature from the outside to be quickly transferred to the temperature measuring core, thus improving the temperature transfer speed.

[0023] 2. In this disclosure, by setting up a sealing mechanism, the support plate and thermal grease can transfer heat while sealing the connecting hole and the cavity inside the protective tube, thereby preventing soot from entering the protective tube and causing blockage.

[0024] 3. In this disclosure, the temperature can be quickly transferred to the temperature sensing core through the cooperation between the protruding box, the connecting hole, the heat conduction mechanism and the sealing mechanism, which improves the speed at which the sensor senses temperature and can meet the needs of rapid temperature monitoring. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present disclosure;

[0027] Figure 2 This is a cross-sectional structural schematic diagram of the protective tube in one embodiment of this disclosure;

[0028] Figure 3 This is a cross-sectional structural schematic diagram of the protective tube and the protruding box in one embodiment of this disclosure;

[0029] Figure 4 This is a schematic diagram of the sealing mechanism in one embodiment of the present disclosure.

[0030] In the diagram: 1. Junction box; 2. Protective tube; 3. Temperature sensing core; 4. Protruding box; 5. Connecting hole; 6. Heat-conducting ring; 7. Heat-conducting plate; 8. Transfer plate; 9. Connecting groove; 10. Support plate; 11. Thermal grease; 12. Heat-conducting groove; 13. Exposed port. Detailed Implementation

[0031] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0032] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0033] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0034] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0036] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] like Figures 1-4 As shown, a fast-response temperature sensor according to an embodiment of the present disclosure is included: a fast-response temperature sensor including a junction box 1, a protective tube 2 and a temperature sensing core 3, the temperature sensing core 3 being disposed inside the protective tube 2, and further including: a protruding box 4, a connecting hole 5, a heat conduction mechanism and a sealing mechanism, the protruding box 4 being fixedly connected to the bottom end of the protective tube 2, the bottom end of the protruding box 4 having an exposed opening 13, the connecting hole 5 being opened at the bottom end of the protective tube 2, the connecting hole 5 communicating with the cavity inside the protruding box 4, the temperature sensing core 3 being disposed inside the connecting hole 5 and the exposed opening 13, the diameter of the exposed opening 13 being the same as the diameter of the temperature sensing core 3, which facilitates the exposure of the temperature sensing core 3 while also providing stable support for the temperature sensing core 3.

[0038] like Figures 1-3As shown, a heat conduction mechanism is installed inside the protective tube 2 to transfer external heat to the temperature measuring core 3. The heat conduction mechanism includes: a heat conduction ring 6, a heat conduction plate 7, a transfer plate 8, and a connecting groove 9. The circumferential surface of the protective tube 2 is provided with heat conduction grooves 12 distributed in a circular pattern. Each heat conduction groove 12 has a corresponding connecting groove 9, which helps to reduce the local thickness of the protective tube 2 and improve the temperature transfer speed. The heat conduction ring 6 is fitted on the circumferential surface of the temperature measuring core 3. There are multiple heat conduction plates 7, which are distributed in a circular pattern and fixedly connected to the circumferential surface of the heat conduction ring 6. The other end of each heat conduction plate 7 is fixedly connected to a transfer plate 8. There are multiple connecting grooves 9, which are distributed in a circular pattern inside the protective tube 2. Each connecting groove 9 is provided with a transfer plate 8.

[0039] A highly efficient heat conduction path is formed by the sequential and tight connection of the heat-conducting ring 6, heat-conducting plate 7, and transfer plate 8. Among them, the heat-conducting ring 6 is in direct contact with the temperature sensing core 3. With the excellent thermal conductivity of the metal itself, the heat-conducting ring 6, heat-conducting plate 7, and transfer plate 8 can quickly gather from the heat source through the transfer plate 8 and heat-conducting plate 7 to the heat-conducting ring 6, and then be immediately transferred to the temperature sensing core 3, thereby realizing rapid sensing and accurate measurement of temperature.

[0040] like Figure 4 As shown, the sealing mechanism is set inside the protruding box 4 to seal the cavity inside the connecting hole 5 and the protective tube 2. The sealing mechanism includes a support plate 10 and thermal grease 11. The thermal ring 6, thermal plate 7, transfer plate 8 and support plate 10 are all made of metal to improve the temperature transfer efficiency. There are multiple support plates 10, which are all arranged in a circular pattern and fixedly connected to the inner circumference of the protruding box 4. The other end of the multiple support plates 10 is in contact with the temperature measuring core 3. The thermal grease 11 is filled inside the protruding box 4.

[0041] Due to the thermal conductivity of the support plate 10 and the thermal grease 11, the thermal grease 11 has a special paste-like texture. It can adhere tightly to each contact surface, filling the extremely fine gaps between them, greatly reducing thermal resistance. It can quickly transfer external heat to the temperature sensing core 3. Furthermore, the filled thermal grease 11 can seal the connecting hole 5 and the protective tube 2, thereby preventing smoke and dust from entering the protective tube 2.

[0042] The working principle is as follows: when precise sensing of external temperature is required, the heat-conducting groove 12 set on the protective tube 2 reduces the local thickness of the protective tube 2 in that area, effectively removing a "roadblock" to heat conduction, allowing external temperature to be introduced more quickly. The heat received by the heat-conducting groove 12 is rapidly conducted to the heat-conducting plate 7 in the connecting groove 9. The heat-conducting plate 7, utilizing its own thermal conductivity, can quickly transfer heat to the heat-conducting ring 6, thus allowing the temperature sensing core 3 to instantly capture subtle temperature changes.

[0043] A portion of the temperature sensing core 3 is directly exposed outside the protective tube 2, allowing unobstructed contact between the external temperature and the core 3. This significantly reduces the delay in temperature transfer and further improves the overall system's response speed to external temperatures. Simultaneously, the support plate 10 and thermal grease 11 quickly direct external heat to the temperature sensing core 3. The thermal grease 11, applied to appropriate locations, effectively prevents the entry of smoke and dust, avoiding internal contamination and ensuring the continuous and accurate operation of the temperature sensing system.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A fast-response temperature sensor, comprising a junction box (1), a protective tube (2), and a temperature sensing core (3), wherein the temperature sensing core (3) is disposed within the protective tube (2), characterized in that, Also includes: The protruding box (4) is fixedly connected to the bottom end of the protective tube (2), and the bottom end of the protruding box (4) is provided with an exposed opening (13). A connecting hole (5) is provided at the bottom end of the protective tube (2). The connecting hole (5) is connected to the cavity inside the protruding box (4). The temperature measuring core (3) is provided in the connecting hole (5) and the exposed opening (13). A heat conduction mechanism is provided inside the protective tube (2) for transferring external heat to the temperature measuring core (3); A sealing mechanism is provided inside the protruding box (4) for sealing the communicating hole (5) and the cavity inside the protective tube (2).

2. The fast-response temperature sensor according to claim 1, characterized in that, The heat-conducting mechanism includes: A heat-conducting ring (6) is sleeved on the circumferential surface of the temperature measuring core (3); A heat-conducting plate (7) is provided in multiple forms, and the multiple heat-conducting plates (7) are distributed in a circular shape and fixedly connected to the circumferential surface of the heat-conducting ring (6); The other end of each of the multiple heat-conducting plates (7) is fixedly connected to the transfer plate (8); The connecting groove (9) is provided in multiple ways. The multiple connecting grooves (9) are arranged in a circular pattern on the inside of the protective tube (2). Each connecting groove (9) is provided with a transfer plate (8).

3. A fast-response temperature sensor according to claim 2, characterized in that, The other end of each of the multiple heat-conducting plates (7) is fixedly connected to the transfer plate (8). The inside of the protective tube (2) is provided with multiple connecting grooves (9) arranged in a circular pattern, and each of the connecting grooves (9) is provided with a transfer plate (8).

4. A fast-response temperature sensor according to claim 2, characterized in that, The sealing mechanism includes: Support plate (10), there are multiple support plates (10), and the multiple support plates (10) are all circularly distributed and fixedly connected to the inner circumference of the protruding box (4). The other end of the multiple support plates (10) is in contact with the temperature measuring core (3).

5. A fast-response temperature sensor according to claim 1, characterized in that, The protruding box (4) is filled with thermally conductive silicone grease (11).

6. A fast-response temperature sensor according to claim 3, characterized in that, The protective tube (2) has heat-conducting grooves (12) distributed in a circular pattern on its circumferential surface, and each heat-conducting groove (12) corresponds to a connecting groove (9).

7. A fast-response temperature sensor according to claim 1, characterized in that, The diameter of the exposed opening (13) is the same as the diameter of the temperature measuring core (3).

8. A fast-response temperature sensor according to claim 4, characterized in that, The heat-conducting ring (6), the heat-conducting plate (7), the transfer plate (8), and the support plate (10) are all made of metal.

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