Pressure type thermometer

Abstract

The utility model discloses a pressure type thermometer, and relates to the field of temperature sensing bulbs of pressure type thermometers, the pressure type thermometer comprises a temperature sensing bulb, the output end of the temperature sensing bulb is connected with a capillary tube, the output end of the capillary tube is connected with a display meter, and the temperature sensing bulb is provided with an accelerated heat exchange mechanism; the accelerated heat exchange mechanism comprises a plurality of heat exchange fins integrally formed on the periphery of the thermal bulb, the heat exchange fins are circumferentially distributed at equal intervals around the circle center of the thermal bulb, a heat exchange cavity is formed in the inner wall of each heat exchange fin, and the end, close to the periphery of the thermal bulb, of each heat exchange cavity is of an open structure; and the inner cavity of the heat exchange cavity is communicated with the inner cavity of the temperature sensing bulb. According to the utility model, the accelerated heat exchange mechanism is arranged, and the accelerated heat exchange mechanism can effectively increase the heat exchange area of the temperature sensing bulb, thereby further improving the heat exchange efficiency, realizing the more efficient expansion of the high-expansion liquid, and reducing the delay of the pressure type thermometer.

Description

TECHNICAL FIELD

[0001] The utility model relates to the temperature sensing package field of pressure type thermometer, and specifically relates to a pressure type thermometer. BACKGROUND

[0002] The principle of the pressure type thermometer is based on the change relation between the saturated vapor pressure of the evaporated liquid in the closed temperature measuring system and the temperature, and the temperature is measured, when the temperature sensing package senses the temperature change, the saturated vapor in the closed system produces corresponding pressure, causes the change of the curvature of the elastic element, makes the displacement of the free end, and then the displacement is changed into the indication value by the gear amplification mechanism.

[0003] In the prior art, the temperature sensing package is generally in a hollow columnar structure, so that the contact area is limited when measuring the temperature, resulting in certain time delay in temperature measurement. UTILITY MODEL CONTENT

[0004] The utility model discloses a pressure type thermometer.

[0005] To achieve the above object, the utility model provides the following technical scheme: a pressure type thermometer, including temperature sensing package, the output end of temperature sensing package is connected with capillary, the output end of capillary is connected with display table, be provided with the heat exchange fin of acceleration mechanism on temperature sensing package;

[0006] The acceleration heat exchange mechanism includes a plurality of heat exchange fins integrally formed on the outer periphery of the temperature sensing package, the plurality of heat exchange fins are distributed equidistantly and circumferentially with respect to the center of the temperature sensing package, the inner wall of the heat exchange fin is provided with a heat exchange cavity, the end of the heat exchange cavity close to the outer periphery of the temperature sensing package is in an open structure, and the inner cavity of the heat exchange cavity is communicated with the inner cavity of the temperature sensing package.

[0007] As a further scheme of the utility model, a plurality of square holes are formed in the temperature sensing package, and the plurality of square holes and the heat exchange fins are one-to-one corresponding in the circumferential direction.

[0008] As a further scheme of the utility model, the heat exchange cavity is communicated with the inner cavity of the temperature sensing package through the square hole.

[0009] As a further scheme of the utility model, a communication hole is formed in the top end plate of the temperature sensing package, one end of the capillary is connected with the communication hole, and the inner cavity of the temperature sensing package is communicated with the inner cavity of the capillary through the communication hole.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] By setting the accelerated heat exchange mechanism, the accelerated heat exchange mechanism can effectively improve the heat exchange area of the temperature sensing bag, thereby further improving the heat exchange efficiency, realizing more efficient expansion of the high-expansion liquid, and thereby reducing the delay of the pressure type thermometer. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is an internal structure schematic diagram of the temperature sensing bag of the utility model;

[0014] Figure 3 It is a Figure 2 It is a local enlarged view of A in the middle.

[0015] In the figure: 1, temperature sensing bag; 2, capillary; 3, display table; 4, heat exchange fin; 5, communication hole; 6, heat exchange cavity; 7, square hole. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0017] Please refer to Figures 1-3 In the embodiments of the utility model, a pressure type thermometer comprises a temperature sensing bag 1, the output end of the temperature sensing bag 1 is connected with a capillary 2, the output end of the capillary 2 is connected with a display table 3, and an accelerated heat exchange mechanism is arranged on the temperature sensing bag 1; the accelerated heat exchange mechanism comprises a plurality of heat exchange fins 4 integrally formed on the outer periphery of the temperature sensing bag 1, the plurality of heat exchange fins 4 are distributed equidistantly and circumferentially with the center of the temperature sensing bag 1, the inner wall of the heat exchange fin 4 is provided with a heat exchange cavity 6, the end of the heat exchange cavity 6 close to the outer periphery of the temperature sensing bag 1 is of an open structure, and the inner cavity of the heat exchange cavity 6 is communicated with the inner cavity of the temperature sensing bag 1.

[0018] In the embodiment, first, the temperature sensing bag 1 is contacted with the medium with heat, at this time, the medium with heat exchanges heat with the high-expansion liquid in the temperature sensing bag 1, the high-expansion liquid expands after being heated, and is input into the spring tube in the inside of the display table 3 along the capillary 2, at this time, the free end of the spring tube is displaced, and then the displacement of the spring tube is converted into the rotation of the pointer by the secondary amplification mechanism, so that the temperature of the heat medium can be judged.

[0019] When the temperature sensing bag 1 is in contact with the heat medium, the heat transfer acceleration mechanism can improve the heat conduction between the heat medium and the high-expansion liquid, thereby reducing the delay display time.

[0020] Please pay attention to Figure 2 and Figure 3 The temperature sensing bag 1 is internally provided with a plurality of square holes 7, the plurality of square holes 7 correspond to the heat exchange fins 4 in the circumferential direction one by one, and the heat exchange cavities 6 are connected with the inner cavity of the temperature sensing bag 1 through the square holes 7.

[0021] In the embodiment, the inside of the heat exchange cavity 6 and the inside of the temperature sensing bag 1 are both filled with the high-expansion liquid, so that the heat transfer efficiency is further improved after the heat exchange area is increased, and the high-expansion liquid can expand according to the heat exchange temperature.

[0022] Please pay attention to Figure 3 The top plate of the temperature sensing bag 1 is provided with a communication hole 5, the communication hole 5 is connected with one end of the capillary tube 2, and the inner cavity of the temperature sensing bag 1 is connected with the inner cavity of the capillary tube 2 through the communication hole 5.

[0023] In the embodiment, the high-expansion liquid expanded by heat enters the inside of the capillary tube 2 through the communication hole 5, thereby achieving the purpose of the high-expansion liquid entering the inside of the spring tube.

[0024] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the application concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A pressure thermometer comprising a temperature sensing bulb (1), characterized by, The output end of the temperature sensing bag (1) is connected with a capillary tube (2), the output end of the capillary tube (2) is connected with a display table (3), and the temperature sensing bag (1) is provided with an accelerated heat exchange mechanism; The accelerated heat exchange mechanism comprises a plurality of heat exchange fins (4) integrally formed on the outer periphery of the temperature sensing bag (1), the plurality of heat exchange fins (4) are distributed in a circle center equidistant circumferential direction of the temperature sensing bag (1), the inner wall of the heat exchange fin (4) is provided with a heat exchange cavity (6), the end of the heat exchange cavity (6) close to the outer periphery of the temperature sensing bag (1) is in an open structure, and the inner cavity of the heat exchange cavity (6) is communicated with the inner cavity of the temperature sensing bag (1).

2. A pressure thermometer according to claim 1, wherein The inside of the temperature sensing bag (1) is provided with a plurality of square holes (7), and the plurality of square holes (7) are one-to-one corresponding to the heat exchange fins (4) in the circumferential direction.

3. A pressure thermometer according to claim 2, wherein The heat exchange cavity (6) is communicated with the inner cavity of the temperature sensing bag (1) through the square hole (7).

4. A pressure thermometer according to claim 1, wherein The top end plate of the temperature sensing bag (1) is provided with a communication hole (5), one end of the communication hole (5) is connected with the capillary tube (2), and the inner cavity of the temperature sensing bag (1) is communicated with the inner cavity of the capillary tube (2) through the communication hole (5).

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