Electronic thermometer

Abstract

The invention discloses an electronic thermometer, and relates to the field of temperature measuring equipment, the electronic thermometer comprises a main body and a probe, the probe is hollow, a heating wire and a temperature sensor are arranged in the probe, the heating wire is spirally arranged, and the temperature sensor is arranged in a spiral cavity of the heating wire; the temperature sensor and a power supply module of the heating wire are electrically connected with the control module; when body temperature measurement is carried out, the heating wire is started and provides heat for the temperature sensor and the probe, auxiliary heating is carried out on the basis of the environment temperature, the heating wire is closed after the temperature of the constant-temperature probe is reached, and equivalently, the time from the environment temperature to the temperature of the constant-temperature probe is shortened in an auxiliary heating mode; and the temperature of the constant-temperature probe is gradually increased to the temperature of the human body, so that the overall time of body temperature measurement is effectively shortened, and the temperature measurement efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of temperature measuring equipment, in particular to an electronic thermometer. Background Art

[0002] A thermometer is a thermometer used to detect human body temperature. Currently, there are two main types of commonly used thermometers, one is a mercury thermometer and the other is an electronic thermometer. Whether it is a mercury thermometer or an electronic thermometer, in actual use, the thermometer probe needs to be placed in the armpit or under the tongue, and wait for a while to obtain the temperature data.

[0003] Currently, when using a thermometer to test body temperature, the initial temperature of the thermometer probe is the ambient temperature. When testing human body temperature, the temperature test is completed only when the temperature of the thermometer probe rises to the temperature of the human body. However, when the ambient temperature is low, the temperature difference between the thermometer probe and the human body is large, and it takes a long time to test the temperature value. This affects the temperature measurement experience on the one hand, and the temperature measurement efficiency on the other.

[0004] Therefore people are in urgent need of an electronic thermometer with high temperature measuring efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide an electronic thermometer to solve the problems existing in the above-mentioned prior art, and to preheat the probe by using a heating wire to help accelerate the temperature rise of the probe, thereby improving the temperature measurement efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides an electronic thermometer, including a main body and a probe, the probe is hollow, a heating wire and a temperature sensor are arranged inside the probe, the heating wire is spirally arranged, and the temperature sensor is arranged inside the spiral cavity of the heating wire, and the temperature sensor and the power supply module of the heating wire are both electrically connected to the control module.

[0007] Preferably, the electronic thermometer further comprises a coil frame which is cylindrical and has thermal conductivity, the heating wire is spirally arranged on the coil frame, an end of the coil frame close to the main body is provided with a receiving groove, and the temperature sensor is located in the receiving groove.

[0008] Preferably, the probe is a cylindrical structure with one end closed, and annular flanges are provided at both ends of the coil frame, and the outer diameter of the annular flange matches the inner diameter of the probe.

[0009] Preferably, the power supply module is arranged in the main body, and a avoidance opening is opened on the annular flange close to the main body, and the heating lead of the heating wire passes through the avoidance opening and is connected to the power supply module.

[0010] Preferably, the size of the avoidance opening is larger than the size of the heating lead of the heating wire, and the probe is filled with epoxy resin glue.

[0011] Preferably, the temperature sensor is located on the axis of the spiral cavity of the heating wire, and the spiral cavity of the heating wire is coaxially arranged with the probe.

[0012] Preferably, one end of the probe away from the main body is rounded.

[0013] Preferably, the control module and a first battery for supplying power to the control module and the temperature sensor are arranged in the main body, the control module is provided with an on / off switch for controlling the power supply of the first battery, a through hole is provided on the main body corresponding to the on / off switch, and the on / off switch extends out of the through hole.

[0014] Preferably, the power supply module includes a second battery and a control switch, the second battery is electrically connected to the heating wire through the control switch, and the control switch is electrically connected to the control module.

[0015] Preferably, the control module is provided with a display screen for displaying temperature data, and the main body is provided with a window at a position corresponding to the display screen.

[0016] Compared with the prior art, the present invention mainly achieves the following technical effects: When measuring body temperature, turn on the heating wire to provide heat for the temperature sensor and probe, and perform auxiliary heating based on the ambient temperature. Turn off the heating wire after reaching the constant temperature probe temperature. This is equivalent to shortening the time for the ambient temperature to reach the constant temperature probe temperature by auxiliary heating, and then gradually heating from the constant temperature probe temperature to the human body temperature. This effectively shortens the overall time for body temperature measurement and improves temperature measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a structural schematic diagram of an electronic thermometer in an embodiment of the present invention; Figure 2 An exploded view of the internal structure of the probe in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the heating wire in an embodiment of the present invention; Figure 4This is a control flow chart of the heating wire in an embodiment of the present invention; Among them, 1. probe; 2. control module; 3. heating lead; 4. temperature lead; 5. coil frame; 6. epoxy resin glue; 7. temperature sensor; 8. annular flange; 9. receiving groove; 10. avoidance; 11. heating wire; 12. first battery; 13. second battery; 14. display screen. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The purpose of the present invention is to provide an electronic thermometer to solve the problems existing in the prior art, by using a heating wire to preheat the probe, thereby helping to accelerate the temperature rise of the probe and thereby improving the temperature measurement efficiency.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Please refer to Figures 1 to 4 As shown, an electronic thermometer is provided, including a main body and a probe 1. The probe 1 is arranged at one end of the main body. The probe 1 is made of metal with thermal conductivity. The probe 1 is hollow. A heating wire 11 and a temperature sensor 7 are arranged in the probe 1. The heating wire 11 is spirally arranged. The temperature sensor 7 is arranged in the spiral cavity of the heating wire 11. The arrangement of the heating wire 11 and the temperature sensor 7 fully utilizes the internal space of the probe 1, reduces the space occupation, and the spirally arranged heating wire 11 can provide uniform heat to the surrounding space, thereby improving the temperature rise effect of the probe 1. The power supply modules of the temperature sensor 7 and the heating wire 11 are both electrically connected to the control module 2. By supplying power to the heating wire 11, the thermal effect of the current is utilized. The electrical energy is converted into thermal energy, and the material of the heating wire 11 is nickel-chromium alloy, iron-chromium-aluminum alloy or aluminum-nickel alloy, etc.; when using the present device to measure body temperature, the control module 2 turns on the heating wire 11, and the heating wire 11 provides heat for the temperature sensor 7 and the probe 1, and performs auxiliary heating based on the ambient temperature. During the heating process, the temperature sensor 7 detects the temperature in real time and transmits the data to the control module 2. After reaching the set constant temperature probe temperature, the control module 2 automatically controls to turn off the heating wire 11, which is equivalent to shortening the time for the ambient temperature to reach the constant temperature probe temperature in an auxiliary heating manner, and then gradually heating from the constant temperature probe temperature to the human body temperature, which effectively shortens the overall time for body temperature measurement and improves the temperature measurement efficiency.

[0023] The temperature of the constant temperature probe when the heating wire 11 stops heating can be set according to actual needs.

[0024] In this embodiment, the control module 2 is a circuit board assembly.

[0025] The electronic thermometer in this embodiment also includes a coil frame 5 which is cylindrical and has thermal conductivity. The material of the coil frame 5 can be copper or aluminum, etc. The heating wire 11 is spirally arranged on the coil frame 5. The coil frame 5 provides stable support for the coil formed by the spiral arrangement of the heating wire 11. When the coil frame 5 is set, it is necessary to provide a receiving groove 9 at one end of the coil frame 5 close to the main body. The temperature sensor 7 is located in the receiving groove 9, which plays a role in improving space utilization.

[0026] The probe 1 is a cylindrical structure with one end closed, and the closed end is arranged away from the main body. Annular flanges 8 are arranged at both ends of the coil frame 5, and the outer diameter of the annular flange 8 matches the inner diameter of the probe 1, so as to further improve the support stability.

[0027] The temperature sensor 7 is located on the axis of the spiral cavity of the heating wire 11 , and the spiral cavity of the heating wire 11 is coaxially arranged with the probe 1 , which further improves the uniformity of heat transfer and improves the heating effect of the probe 1 and the temperature sensor 7 .

[0028] The power supply module is arranged in the main body. On the basis of setting the annular flange 8, an avoidance opening 10 is opened on the annular flange 8 close to the main body. The heating lead 3 of the heating wire 11 passes through the avoidance opening 10 and is connected to the power supply module. The avoidance opening 10 is set to provide a routing path for the heating lead 3 of the heating wire 11.

[0029] Since the setting of the heating wire 11 will cause a cavity between the probe 1 and the temperature sensor 7, and the heat transfer performance of the cavity is poor, the size of the avoidance opening 10 is set larger than the size of the heating lead 3 of the heating wire 11, that is, the avoidance opening 10 can completely accommodate the heating lead 3 and leave a certain passage. The epoxy resin glue 6 is filled in the probe 1 through the avoidance opening 10, and the fluidity of the epoxy resin glue 6 is utilized to fill the cavity position, thereby improving the heat transfer effect between the probe 1 and the temperature sensor 7, and further improving the stability of the heating wire 11.

[0030] When filling the epoxy resin glue 6 , the epoxy resin glue 6 fills the receiving groove 9 to fix the position of the temperature sensor 7 , and at the same time, the epoxy resin glue 6 is used to fix the temperature lead 4 of the temperature sensor 7 and the heating lead 3 of the heating wire 11 .

[0031] The end of the probe 1 away from the main body is rounded to prevent the sharp corner from causing pressure on the human body and causing discomfort.

[0032] A control module 2 and a first battery 12 for supplying power to the control module 2 and the temperature sensor 7 are arranged in the main body, wherein the first battery 12 can be arranged on the control module 2, and the main body can provide protection for its internal components; an on-off switch for controlling the power supply of the first battery 12 is arranged on the control module 2, and a through hole is arranged on the main body corresponding to the on-off switch, and the on-off switch extends out of the through hole, and the activation and deactivation of the overall thermometer can be achieved by pressing the on-off switch.

[0033] The power supply module includes a second battery 13 and a control switch. The second battery 13 is electrically connected to the heating wire 11 through the control switch. The control switch is electrically connected to the control module 2. The control module 2 controls the start and stop of the heating wire 11 through the control switch. In addition, the second battery 13 supplies power to the heating wire 11 alone, and there is no need to use the first battery 12 to power the heating wire 11, thereby improving the battery life of the entire thermometer. In other embodiments, the first battery 12 can be used to power the heating wire 11 through the control switch, reducing the setting of the second battery 13, which can correspondingly reduce the space occupied in the main body, but the battery life of the entire thermometer will be reduced.

[0034] The control module 2 is provided with a display screen 14 for displaying temperature data. The display screen 14 is electrically connected to the control module 2. A window is provided at a position of the main body corresponding to the display screen 14 for the user to quickly view the body temperature data.

[0035] The shell of the main body corresponding to the positions of the first battery 12 and the second battery 13 is detachable, which is convenient for subsequent battery replacement. The first battery 12 and the second battery 13 can be button batteries.

[0036] During actual use, press the on / off switch, the temperature sensor 7 measures the temperature data in real time, the control module 2 controls the heating wire 11 to start heating, and when the temperature data to be detected reaches the temperature of the constant temperature probe, the control module 2 controls the heating wire 11 to stop heating. After the heating stops, the body temperature test phase is officially started, waiting for the probe 1 to rise to the temperature of the human body, and finally reading the data on the display screen 14.

[0037] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0038] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0039] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An electronic thermometer, characterized in that: It includes a main body and a probe, the probe is hollow, a heating wire and a temperature sensor are arranged inside the probe, the heating wire is spirally arranged, the temperature sensor is arranged inside the spiral cavity of the heating wire, and the temperature sensor and the power supply module of the heating wire are both electrically connected to the control module.

2. The electronic thermometer according to claim 1, characterized in that: The electronic thermometer also includes a coil frame which is cylindrical and has heat conductivity. The heating wire is spirally arranged on the coil frame. An accommodating groove is arranged at one end of the coil frame close to the main body. The temperature sensor is located in the accommodating groove.

3. The electronic thermometer according to claim 2, characterized in that: The probe is a cylindrical structure with one end closed, and annular flanges are arranged at both ends of the coil frame, and the outer diameter of the annular flange matches the inner diameter of the probe.

4. The electronic thermometer according to claim 3, characterized in that: The power supply module is arranged in the main body, and a avoidance opening is opened on the annular flange close to the main body. The heating lead of the heating wire passes through the avoidance opening and is connected to the power supply module.

5. The electronic thermometer according to claim 4, characterized in that: The size of the avoidance opening is larger than the size of the heating lead of the heating wire, and the probe is filled with epoxy resin glue.

6. The electronic thermometer according to claim 3, characterized in that: The temperature sensor is located on the axis of the spiral cavity of the heating wire, and the spiral cavity of the heating wire is coaxially arranged with the probe.

7. The electronic thermometer according to claim 1, characterized in that: The end of the probe away from the main body is rounded.

8. The electronic thermometer according to claim 1, characterized in that: The control module and a first battery for supplying power to the control module and the temperature sensor are arranged in the main body, the control module is provided with an on / off switch for controlling the power supply of the first battery, a through hole is provided on the main body corresponding to the on / off switch, and the on / off switch extends out of the through hole.

9. The electronic thermometer according to claim 1, characterized in that: The power supply module includes a second battery and a control switch, the second battery is electrically connected to the heating wire through the control switch, and the control switch is electrically connected to the control module.

10. The electronic thermometer according to claim 1, characterized in that: The control module is provided with a display screen for displaying temperature data, and the main body is provided with a window at a position corresponding to the display screen.

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