Temperature measuring probe and temperature measuring instrument

Abstract

The utility model discloses a temperature measuring probe and a temperature measuring instrument. The temperature measuring probe comprises a probe body, a probe head and a temperature sensor, the probe body is connected with the probe head, the probe head is made of a tin alloy material with the melting point larger than or equal to 100 DEG C, the probe head is provided with the temperature sensor, and the temperature sensor is used for detecting the temperature of the probe head. The temperature measuring instrument comprises the temperature measuring probe. According to the probe, the tin alloy is small in heat capacity and high in heat conductivity coefficient, and the detection sensitivity and accuracy can be guaranteed; the tin alloy material is relatively soft and easy to process, and as the detection temperature rises, the tin alloy deforms to a certain extent microcosmically, so that the tin alloy can be better attached to the inner wall of the detected reactor; the tin alloy with the melting point larger than or equal to 100 DEG C is adopted, the probe cannot be molten in a reactor during temperature measurement, residues cannot be generated when the probe is pulled out, and use is convenient.

Description

Technical Field

[0001] The present application belongs to the field of biological detection technology, and specifically relates to a temperature measuring probe and a temperature measuring instrument for a biological sample heat treatment device. Background Art

[0002] Devices for thermal treatment of biological samples, such as nucleic acid amplification instruments, are usually equipped with a heating module containing a reactor. After a well plate containing a PCR (polymerase chain reaction) reaction mixture is placed, a nucleic acid amplification reaction is performed. In order to perform thermal verification on the heating module and verify the accuracy of its test temperature, a thermometer is required. The thermometer usually includes multiple temperature probes, which are usually wrapped with thermal conductive silicone grease, or low-melting-point metals (melting point between room temperature and 60°C) are directly used as temperature probes, but the above solutions all have certain technical problems.

[0003] Using thermal conductive silicone grease as the heat conduction medium between the reactor under test and the temperature probe, the temperature probe has the following technical problems:

[0004] 1) The application and wiping of thermal grease is very troublesome, which affects the detection efficiency;

[0005] 2) Thermal grease has a fluorescent signal. If the thermal grease remaining in the reactor is not wiped clean, it will affect the fluorescence detection.

[0006] Using low melting point metal as temperature probe has the following technical problems:

[0007] Each time the temperature is measured, the low-melting-point metal has to go through the process of melting and solidification. On the one hand, the waiting time is long. On the other hand, the low-melting-point metal may remain in the reactor after melting, which not only affects the detection, but also causes the continuous consumption of the temperature measuring probe. Utility Model Content

[0008] In view of the above-mentioned shortcomings or deficiencies of the prior art, the technical problem to be solved by the present application is to provide a temperature measuring probe and a thermometer.

[0009] To solve the above technical problems, this application is implemented through the following technical solutions:

[0010] The present application proposes a temperature measuring probe, which is characterized in that it includes: a probe body, a probe head and a temperature sensor, the probe body and the probe head are connected, the probe head is made of a tin alloy material with a melting point greater than or equal to 100°C, and the probe head is provided with a temperature sensor, and the temperature sensor is used to detect the temperature of the probe head.

[0011] Optionally, the temperature measuring probe further includes a protective cover, which is a hollow structure. The outer walls at both ends of the protective cover are respectively connected to the probe body and the probe head, and the temperature sensor is arranged in the hollow structure of the protective cover.

[0012] Optionally, in the temperature measuring probe, the tin alloy is an alloy of indium, tin, bismuth and zinc.

[0013] Optionally, in the temperature measuring probe, the shape of the probe head includes: an inverted frustum structure.

[0014] Optionally, in the temperature measuring probe, the temperature sensor includes: a thermistor.

[0015] Optionally, in the temperature measuring probe, the material of the probe body is polypropylene or nylon.

[0016] Optionally, in the temperature measuring probe, the central axis of the protective cover coincides with the central axis of the probe body.

[0017] Optionally, in the temperature measuring probe, an end of the protective cover in contact with the probe head is provided with a trumpet-shaped opening structure.

[0018] Optionally, in the temperature measuring probe, the protective cover is made of copper, aluminum or silver.

[0019] The present application also proposes a temperature measuring instrument, comprising at least one temperature measuring probe as described above.

[0020] Optionally, the thermometer further includes: a circuit board electrically connected to the temperature sensor.

[0021] Compared with the prior art, this application has the following technical effects:

[0022] The probe head of the present application is made of a tin alloy material with a melting point greater than or equal to 100°C. The tin alloy has a small heat capacity and a high thermal conductivity, which can ensure the sensitivity and accuracy of the detection; the tin alloy is relatively soft and easy to be processed into various required shapes, and as the detection temperature increases, the tin alloy will produce a certain deformation at the microscopic level, and thus can fit more closely with the inner wall of the reactor being detected; by using a tin alloy with a melting point greater than or equal to 100°C, the probe will not melt in the reactor during temperature measurement and will not have any residue when pulled out, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1: A front view of a temperature measuring probe according to an embodiment of the present application;

[0025] Figure 2 : A cross-sectional view of a temperature measuring probe according to an embodiment of the present application;

[0026] Figure 3 : A front view of a temperature measuring probe according to another embodiment of the present application;

[0027] Figure 4 : A cross-sectional view of a temperature measuring probe according to another embodiment of the present application;

[0028] In the figure: a probe body 1, a probe head 2, a protective cover 3, a temperature sensor 4, a trumpet-shaped opening structure 5 and a wire 6. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] like Figure 1 and Figure 2 As shown, one of the embodiments of the present application is a temperature measuring probe, comprising: a probe body 1, a probe head 2 and a temperature sensor 4. The probe body 1 and the probe head 2 are fixedly connected, and can be bonded. The temperature sensor 4 is arranged inside the probe head 2 to detect the temperature of the probe head 2. At this time, the temperature sensor 4 can directly contact the probe head 2 to further ensure the sensitivity and accuracy of the temperature measurement; the probe head 2 is made of a tin alloy material with a melting point greater than or equal to 100°C.

[0031] Tin alloy has small heat capacity, high thermal conductivity and soft texture. The probe head 2 is made of tin alloy material with a melting point greater than or equal to 100°C, with high sensitivity and accuracy. When measuring temperature, the probe can fit more closely to the inner wall of the reactor being tested, and will not melt in the reactor and will not leave residue when pulled out, making it easy to use.

[0032] Specifically, in this embodiment, the metal material of the probe head 2 is an alloy of indium, tin, bismuth and zinc, and its melting point is set to 100° C. according to a certain mass ratio. The temperature measuring probe of this embodiment can be used for temperature measurement in DNA nucleic acid detection, RNA nucleic acid detection and melting curve detection.

[0033] like Figure 3 and Figure 4As shown, another embodiment of the present application, a temperature measuring probe, includes: a probe body 1, a probe head 2, a protective cover 3 and a temperature sensor 4, the protective cover 3 is a hollow structure, and the temperature sensor 4 is fixed to the hollow structure of the protective cover 3 by thermal conductive silicone grease; the probe body 1 and the probe head 2 are connected through the protective cover 3, the outer wall of the upper end of the protective cover 3 is fixedly connected to the probe body 1, and a direct injection molding connection can be adopted, the probe head 2 is fixedly arranged at the lower end of the outer wall of the protective cover 3, and the protective cover 3 can play a certain protective role on the temperature sensor 4 and extend its service life; the temperature sensor 4 can be completely placed in the protective cover 3, or it can protrude downward from the protective cover 3. At this time, the part of the temperature sensor 4 protruding downward from the protective cover can directly contact with the probe head 2, so as to further ensure the sensitivity and accuracy of the temperature measurement; the probe head 2 is made of a tin alloy material with a melting point greater than or equal to 100°C.

[0034] Tin alloy has small heat capacity, high thermal conductivity and soft texture. The probe head 2 is made of tin alloy material with a melting point greater than or equal to 100°C, with high sensitivity and accuracy. When measuring temperature, the probe can fit more closely to the inner wall of the reactor being tested, and will not melt in the reactor and will not leave residue when pulled out, making it easy to use.

[0035] Specifically, in this embodiment, the metal material of the probe head 2 is an alloy of indium, tin, bismuth and zinc, and the melting point thereof is set to 100° C. according to a certain mass ratio.

[0036] Optionally, the shape of the probe head 2 includes but is not limited to an inverted truncated cone structure. In this embodiment, an inverted truncated cone structure is adopted to facilitate installation in a reactor.

[0037] Optionally, the temperature sensor 4 includes but is not limited to a thermistor. In this embodiment, a thermistor is used. The thermistor has high sensitivity, which is beneficial to the accuracy of temperature measurement.

[0038] Optionally, the probe body 1 is made of polypropylene or nylon, which is light and durable.

[0039] Specifically, the central axis of the protective cover 3 coincides with the central axis of the probe body 1 to ensure that the temperature sensor 4 is disposed at a central position.

[0040] Specifically, one end of the protective cover 3 that contacts the probe head 2 is provided with a trumpet-shaped opening structure 5 , which is conducive to better combination of the protective cover 3 and the probe head 2 .

[0041] Optionally, the protective cover 3 can be made of metal materials such as copper, aluminum or silver. The protective cover in this embodiment is made of copper, which is conducive to better transferring the heat of the metal of the probe head 2 to the temperature sensor 4.

[0042] The temperature measuring probe of this embodiment can be used for temperature measurement in DNA nucleic acid detection, RNA nucleic acid detection, and melting curve detection.

[0043] The temperature measuring probes proposed in the embodiments of the present application can be used individually or in any number together, which is extremely flexible.

[0044] On the other hand, the present application also provides a temperature measuring instrument, comprising at least one temperature measuring probe as described above.

[0045] Specifically, the temperature measuring probe is described above in detail and will not be repeated here.

[0046] Specifically, the temperature measuring instrument further includes: a circuit board electrically connected to the temperature sensor 4 .

[0047] In this embodiment, the temperature sensor 4 is electrically connected to the circuit board via a wire 6 .

[0048] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0050] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0051] The above embodiments are only used to illustrate the technical solution of the present application but not to limit it. The present application is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solution of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application, and should be included in the scope of the claims of the present application.

Claims

1. A temperature measuring probe, characterized in that: include: A probe body, a probe head and a temperature sensor, wherein the probe body and the probe head are connected, the probe head is made of a tin alloy material with a melting point greater than or equal to 100°C, and the probe head is provided with a temperature sensor for detecting the temperature of the probe head.

2. The temperature measuring probe according to claim 1, characterized in that: It also includes a protective cover, which is a hollow structure. The outer walls of both ends of the protective cover are respectively connected to the probe body and the probe head, and the temperature sensor is arranged in the hollow structure of the protective cover.

3. The temperature measuring probe according to claim 1, characterized in that: The tin alloy is an alloy of indium, tin, bismuth and zinc.

4. The temperature measuring probe according to claim 1, characterized in that: The shape of the probe head includes: an inverted frustum structure.

5. The temperature measuring probe according to claim 1, characterized in that: The temperature sensor includes a thermistor.

6. The temperature measuring probe according to claim 1, characterized in that: The material of the probe body is polypropylene or nylon.

7. The temperature measuring probe according to claim 2, characterized in that: The central axis of the protective cover coincides with the central axis of the probe body.

8. The temperature measuring probe according to claim 2, characterized in that: One end of the protective cover in contact with the probe head is provided with a trumpet-shaped opening structure.

9. The temperature measuring probe according to claim 2, characterized in that: The protection cover is made of copper, aluminum or silver.

10. A thermometer, characterized in that: The method comprises at least one temperature measuring probe according to any one of claims 1 to 9.

11. The thermometer according to claim 10, characterized in that: Also includes: A circuit board electrically connected to the temperature sensor.

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