Temperature sensor

Abstract

The utility model discloses a temperature sensor, and particularly relates to the technical field of temperature sensors, and the temperature sensor comprises a fixed cylinder, a fixed plate penetrates through the fixed cylinder, one end of the fixed cylinder is in threaded connection with a mounting seat, a core body coaxially and rotatably penetrates through the mounting seat, and the core body is coaxially and fixedly sleeved with a rotating gear ring. The mounting base is fixedly connected with a fixed gear ring matched with the rotating gear ring, a frustum is arranged in the middle of the core body in a radial protruding mode and points to the rotating gear ring, the frustum is installed in an inner cavity of the mounting base in a sliding mode, the core body makes contact with a spring abutting against the frustum, and a thermistor is coaxially inlaid in the end, away from the rotating gear ring, of the core body. The thermistor is electrically connected with a wire penetrating to the other end of the core body, the outer wall of the end, embedded with the thermistor, of the core body is wound with a spiral fin, the spiral fin is arranged, the heat exchange area with fluid is increased, and the temperature sensor can detect transient fluid temperature fluctuation more sensitively.

Description

TECHNICAL FIELD

[0001] The utility model belongs to temperature sensor technical field, concretely relates to a temperature sensor. BACKGROUND

[0002] A temperature sensor is a device used to detect temperature changes and convert these changes into readable data. It is widely used in industry, agriculture, medicine and daily life, such as air conditioners, refrigerators and other household appliances. Common types include thermocouples, thermistors and semiconductor temperature sensors.

[0003] The existing temperature sensor probe is small, and when measuring the temperature of the fluid, due to the small contact area with the fluid, when the fluid flows quickly, it cannot produce effective heat exchange in time, and when the fluid has a short-term temperature fluctuation, the temperature sensor is difficult to detect. Therefore, a new type of temperature sensor is needed. UTILITY MODEL CONTENT

[0004] To solve the above problems, the utility model discloses a temperature sensor.

[0005] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0006] A temperature sensor, comprising a fixed cylinder, the fixed cylinder is penetrated by a fixed plate, one end of the fixed cylinder is threadedly connected with a mounting seat, the mounting seat is coaxially rotatably penetrated by a core body, the core body is coaxially fixedly sleeved with a rotating gear ring, the mounting seat is fixedly connected with a fixed gear ring matched with the rotating gear ring, the core body is provided with a radial protrusion with a conical frustum in the middle, and the conical frustum points to the rotating gear ring, the conical frustum is slidably installed in the inner cavity of the mounting seat, and the core body is in contact with a spring abutting against the conical frustum, the core body is coaxially embedded with a thermistor inside the end away from the rotating gear ring, and the thermistor is electrically connected with an electric wire penetrating to the other end of the core body, and the thermistor embedded in the core body is wound with a spiral fin on one end of the outer wall.

[0007] As a preferred technical scheme of the utility model, the rotating gear ring and the fixed gear ring are both provided with annular teeth uniformly distributed on one side.

[0008] As a preferred technical scheme of the utility model, when the conical frustum is tightly matched with the inner cavity taper of the mounting seat, the annular teeth of the rotating gear ring and the fixed gear ring cannot be completely and tightly inserted together.

[0009] As a preferred technical scheme of the utility model, the mounting seat is provided with a hexagonal ring coaxial with itself.

[0010] As a preferred technical scheme of the utility model, the opening of the spiral fin closest to the end of the core body is the inlet, and the end of the core body away from the spiral fin is provided with an arrow indicating the direction of the inlet of the spiral fin.

[0011] As a preferred technical scheme of the utility model, the spiral fin inner cavity is provided with a plurality of spiral flow channels extending from the flow inlet to the flow outlet.

[0012] As a preferred technical scheme of the utility model, the handle ring is coaxially fixed to the end of the core body away from the spiral fin.

[0013] The utility model has the advantages of:

[0014] First, the spiral fin provided in the utility model increases the heat exchange area with fluid, and effective heat exchange can still be generated when fluid has a short-term temperature fluctuation, so that the temperature sensor is more sensitive to short-term fluid temperature fluctuation detection, and a rotation adjustment mechanism is further provided, so that the flow inlet of the spiral fin is aligned with the inflow direction of fluid, so that fluid can fully flow into the spiral fin for heat exchange.

[0015] Second, the core body provided in the utility model is convenient to install, and the core body with a proper length can be selected according to the detection position, so that the thermistor can be placed at the required position, and the versatility of the temperature sensor is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the overall structure of the embodiment of the utility model;

[0017] Figure 2 It is an exploded view of the embodiment of the utility model without the fixing plate;

[0018] Figure 3 It is a sectional view of the embodiment of the utility model without the fixing plate and the fixing cylinder;

[0019] Figure 4 It is an exploded view of the rotating gear ring and the fixed gear ring of the embodiment of the utility model.

[0020] LIST OF FIGURES:

[0021] 1, fixing plate; 2, fixing cylinder; 3, mounting seat; 4, core body; 5, spring; 6, thermistor; 7, electric wire; 8, rotating gear ring; 9, fixed gear ring; 10, handle ring; 11, spiral fin. DETAILED DESCRIPTION

[0022] The utility model will be further illustrated in combination with the drawings and specific embodiments, and it should be understood that the following specific embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model.

[0023] Please refer to Figures 1-4The utility model provides a temperature sensor, including fixed cylinder 2, fixed cylinder 2 is penetrated with fixed plate 1, fixed plate 1 is the thin wall of temperature sensor installation position equipment, one end of fixed cylinder 2 is screwed with mounting seat 3, mounting seat 3 is penetrated with core 4 coaxially rotates, core 4 is fixedly covered with rotating gear ring 8 coaxially, and mounting seat 3 is fixedly connected with fixed gear ring 9 of adapting rotating gear ring 8, and the middle part of core 4 is provided with the radial protruding taper, and the taper points to rotating gear ring 8, and the taper is slidably installed in the inner chamber of mounting seat 3, and core 4 is contacted with the spring 5 of abutting taper, and the inner chamber of mounting seat 3 is provided with the taper surface of adapting taper, and the inside of the end of core 4 away from rotating gear ring 8 is inlaid with thermistor 6 coaxially, and thermistor 6 is electrically connected with wire 7 penetrated to the other end of core 4, and thermistor 6 is insulated between core 4, and the two independent wires of wire 7 are connected on the two conductive connectors of thermistor 6 respectively, wherein, thermistor 6 can be folded (the two end contact parts between thermistor 6 folding are insulated), so that the two conductive connectors of thermistor 6 are in the same end, and the outer wall of one end of the inlaid thermistor 6 of core 4 is wound with helical fin 11, and core 4 and helical fin 11 are all made of good metal material of electric conduction.

[0024] Rotating gear ring 8 and fixed gear ring 9 are all provided with annular teeth on one side thereof, and the spring 5 extrudes the taper, so that the taper is tightly matched with the taper surface of the inner chamber of mounting seat 3 to form a seal, and at this time, rotating gear ring 8 and fixed gear ring 9 are in a half-plugged state (the annular teeth of rotating gear ring 8 and fixed gear ring 9 cannot be completely and tightly plugged together).

[0025] The mounting seat 3 is provided with a hexagonal ring coaxial with itself, and the mounting seat 3 is provided with the hexagonal ring to facilitate tightening using a wrench.

[0026] The opening of the helical fin 11 closest to the end of the core 4 is a flow inlet, and the end of the core 4 away from the helical fin 11 is provided with an arrow indicating the direction of the flow inlet of the helical fin 11. The inner cavity of the helical fin 11 is provided with a plurality of helical flow channels extending from the flow inlet to the flow outlet. Fluid flows into the flow inlet of the helical fin 11, and then flows out of the flow outlet of the helical fin 11. Due to the plurality of helical flow channels provided in the helical fin 11, the fluid and the helical fin 11 are in sufficient heat exchange, and at the same time, the helical fin 11 exchanges heat with the thermistor 6 through the core 4.

[0027] The end of the core 4 away from the helical fin 11 is coaxially fixedly covered with a handle ring 10. The handle ring 10 is provided to facilitate rotating the core 4.

[0028] Working principle:

[0029] When installing, the fixed cylinder 2 is welded on the perforated fixed plate 1 (the fixed cylinder 2 can also be a component directly processed and formed on the fixed plate 1), then the mounting seat 3 is screwed and mounted in the fixed cylinder 2, then the handle ring 10 is pressed to separate the rotating gear ring 8 and the fixed gear ring 9, then the core 4 is rotated to make the flow inlet of the spiral fin 11 align with the flow direction of the fluid (the flow inlet direction of the spiral fin 11 can be observed externally through the arrow of the core 4), finally the handle ring 10 is loosened, under the elastic force of the spring 5, the rotating gear ring 8 and the fixed gear ring 9 are re-inserted together, the flow inlet position of the spiral fin 11 is fixed, so that the fluid can fully flow into the spiral fin 11 for heat exchange, and the frustum is tightly matched with the inner cavity conical surface of the mounting seat 3 to form a seal;

[0030] When running, the fluid flows into the flow inlet of the spiral fin 11, then flows out from the flow outlet of the spiral fin 11, since the spiral fin 11 is provided with a plurality of spiral flow channels, the fluid and the spiral fin 11 are fully heat exchanged, and at the same time the spiral fin 11 is fully heat exchanged with the thermistor 6 through the core 4, so as to increase the contact area of the fluid and the temperature sensor, so that the temperature sensor is more sensitive to the short-term fluid temperature fluctuation detection.

[0031] When actually used, the core 4 with a proper length can be selected according to the detection position, so as to place the thermistor 6 at the required position.

[0032] It should be noted that the above content only illustrates the technical thought of the present application, and cannot limit the protection scope of the present application, for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, which fall within the protection scope of the present application.

Claims

1. A temperature sensor comprising a fixed cylinder (2), characterized in that, The fixed cylinder (2) is penetrated by a fixed plate (1), one end of the fixed cylinder (2) is threadedly connected with a mounting base (3), the mounting base (3) is coaxially and rotatably penetrated by a core body (4), the core body (4) is coaxially and fixedly sleeved with a rotating gear ring (8), the mounting base (3) is fixedly connected with a fixed gear ring (9) matched with the rotating gear ring (8), the core body (4) is provided in the middle portion with a radial protrusion of a frustum, and the frustum is directed to the rotating gear ring (8), the frustum is slidingly installed in the inner cavity of the mounting base (3), and the core body (4) is in contact with a spring (5) abutting against the frustum, one end of the core body (4) away from the rotating gear ring (8) is coaxially embedded with a thermistor (6) inside, and the thermistor (6) is electrically connected with an electric wire (7) penetrating to the other end of the core body (4), and one end of the thermistor (6) embedded in the core body (4) is wound with a spiral fin (11).

2. A temperature sensor according to claim 1, wherein The rotating gear ring (8) and the fixed gear ring (9) are both provided on one side with annular teeth uniformly distributed in a ring shape.

3. A temperature sensor according to claim 2, wherein When the frustum is tightly matched with the inner cavity taper surface of the mounting base (3), the annular teeth of the rotating gear ring (8) and the fixed gear ring (9) cannot be completely and tightly inserted together.

4. The temperature sensor of claim 1, wherein, The mounting base (3) is provided with a hexagonal ring coaxial with itself.

5. The temperature sensor of claim 1, wherein, The opening closest to the end of the spiral fin (11) is an inlet, and the end of the core body (4) away from the spiral fin (11) is provided with an arrow indicating the direction of the inlet of the spiral fin (11).

6. A temperature sensor according to claim 5, wherein The inner cavity of the spiral fin (11) is provided with a plurality of spiral flow channels extending from the inlet to the outlet.

7. The temperature sensor of claim 1, wherein, The end of the core body (4) away from the spiral fin (11) is coaxially and fixedly sleeved with a handle ring (10).

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