A heating jacket assembly

Abstract

The utility model relates to a kind of heating sleeve kits, the kit is installed on injection needle, heating seat matching the heating sleeve kit is equipped, first electrode and heating piece are equipped in the kit, second electrode and control system and sensor matched with first electrode are equipped on heating seat, sensor is used to obtain temperature information and is transmitted to control system, and control system is used to drive the working state of heating piece.The utility model can be flexibly set in the core area of injection handle portion needing heating, effectively solve the problem that traditional fixed heating structure is poorly adapted to injection needle, cannot adjust heating position as needed, and adapt the heating demand of different specifications injection needle.

Description

Technical Field

[0001] This utility model relates to the field of heating devices, specifically to a heating kit. Background Technology

[0002] In experimental analysis or related sample processing scenarios, to meet the precise temperature requirements of detection, it is often necessary to heat and control the liquid or gas inside the injection needle. In existing technologies, the heating structure of the injection needle is mostly integrated into a fixed sample injection device base. For example, heating components such as heating sleeves are combined with fixed components such as turntables and supports. The heating components need to be bound to the circuit and mechanical structure of the fixed base to realize their function. The heating process depends on the fixed working platform of the equipment and cannot be used independently without the fixed base.

[0003] In this type of fixed heating solution, the compatibility between the heating component and the injection needle is limited, and the heating base, as part of the fixed equipment, cannot be flexibly adjusted according to the actual scenario. It cannot be operated by hand without being separated from the fixed platform, and it is difficult to quickly adapt to the heating needs of injection needles in different positions. Moreover, the energy transmission and temperature control logic rely on the overall circuit of the fixed base, resulting in a significant lack of flexibility and scenario adaptability in heating operation. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides a heating kit.

[0005] The technical solution of this utility model is as follows: A heating kit is mounted on an injection needle and has a heating seat that matches the heating kit. The kit contains a first electrode and a heating element. The heating seat has a second electrode that matches the first electrode, a control system, and a sensor. The sensor is used to acquire temperature information and transmit it to the control system. The control system is used to drive the working state of the heating element.

[0006] As a preferred embodiment, the heating element is a heating resistor, which includes a curved structure that is obliquely surrounding the outer periphery of the injection needle.

[0007] As a preferred embodiment, a pair of first electrodes are provided on one side of the heating kit, and a pair of second electrodes are provided on the inside of the heating base.

[0008] As a preferred embodiment, the heating kit includes a membrane covering the heating element and a first electrode on one side of the membrane, with an insulation layer provided outside the membrane.

[0009] As a preferred embodiment, the heating seat includes an arc-shaped surface, and a second electrode is provided on the inner side of the arc-shaped surface.

[0010] As a preferred embodiment, a first magnetic layer is provided outside the membrane, and a second magnetic layer corresponding to the first magnetic layer is provided in the middle of the inner side of the arc-shaped surface.

[0011] As a preferred embodiment, several heating elements are arranged axially along the outer surface of the handle of the injection needle, and each heating element is provided with a corresponding heating seat.

[0012] As a preferred embodiment, the heating base is equipped with a display screen and buttons on the outside. The display screen and buttons are connected to the control system, and the sensors are wirelessly connected to the control system. The working time of the heating element is controlled by the buttons, and the sensor data is displayed on the display screen.

[0013] As a preferred option, the heating element is made of materials including polyimide and graphene.

[0014] According to the above-mentioned solution, the beneficial effects of this utility model are as follows: This utility model can be flexibly installed in the core area of ​​the injection needle that needs to be heated, effectively solving the problems of poor compatibility between traditional fixed heating structures and injection needles and the inability to adjust the heating position as needed, adapting to the heating requirements of injection needles of different specifications; and 2-3 heating kits can be arranged at intervals along the axial direction of the injection needle, each heating kit corresponding to an independent heating seat, and the control system of each heating seat can be set to the target temperature and independently collect the temperature of the area, realizing segmented heating and differentiated temperature control of different axial areas of the injection needle, breaking through the limitations of traditional single heating area, and adapting to complex sample processing scenarios that require different temperature conditions in multiple areas. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the combined structure of the heating base and heating kit of this utility model; Figure 2 This is a schematic diagram of the heating kit of this utility model; Figure 3 This is a schematic diagram of the heating kit of this utility model, with dashed lines representing internal structural lines; Figure 4 This is a schematic diagram of the heating base and heating kit of this utility model. The dashed lines represent the internal structural lines. In the diagram, 1. Heating kit; 11. Membrane body; 12. Heating element; 13. First magnetic layer; 2. Injection needle; 3. Heating base; 31. Curved surface; 32. Sensor; 33. Display screen. Detailed Implementation

[0016] To better understand the purpose, technical solution, and technical effects of this utility model, the following description, in conjunction with the accompanying drawings and embodiments, will provide further explanation. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need further definition and explanation in subsequent drawings. It is also stated that the embodiments described below are only for explaining this utility model and are not intended to limit it.

[0017] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intermediate component.

[0018] The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed when in use, or the orientation or positional relationship in which a person skilled in the art would normally understand it, or the orientation or positional relationship in which the product is usually placed when in use. It is only for the purpose of facilitating the description of this application and simplifying the description, and is 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, and therefore should not be construed as a limitation of this application. Example 1

[0019] This embodiment provides a heating kit and matching heating seat for the handle of an injection needle 2, suitable for scenarios requiring precise control of the liquid temperature inside the injection needle, such as experimental analysis and sample processing. The heating kit can be directly installed on the outer periphery of the handle and achieves heating through power connection with the heating seat. Simultaneously, it relies on the control system and sensors of the heating seat to achieve closed-loop temperature control, solving the problem of poor adaptability of traditional fixed heating structures. Depending on actual needs, the heating seat can be used for fixed application or manually operated.

[0020] The heating kit 1 is generally in the shape of a thin ring, adapted to the outer circumference of the handle 22 of a commonly used injection needle 2, and can be installed in close contact with the outer wall of the injection needle. The specific structure includes: The basic carrier of the heating kit 1 is a flexible membrane 11, which is made of a high-temperature resistant composite material of polyimide and graphene. Its inner wall is attached to the outer wall of the handle, and the outer wall of the membrane 11 is wrapped with a heat insulation layer. The heat insulation layer is a centrifugal glass wool layer, which can effectively reduce heat loss during the heating process and ensure heat transfer to the liquid inside the injection needle 2. Referring to the heat insulation design logic of existing heating structures, the heat utilization efficiency is improved.

[0021] A heating element 12 is embedded between the inner wall of the membrane 11 and the handle portion. In this embodiment, the heating element 12 is preferably a heating resistor, which is made of a flexible resistive sheet of polyimide-based graphene composite with a resistance of 10-20Ω. To improve heating uniformity, the heating resistor adopts a curved structure that is obliquely wrapped around the outer periphery of the handle portion of the injection needle 2. Specifically, it consists of two elliptical bodies arranged in a horizontal mirror image with an inclination angle of 30°-45° along the axial direction of the injection needle 2, covering the core area of ​​the injection needle 2 that needs to be heated. This ensures that the heat is evenly distributed along the circumference and axial direction of the handle portion, avoiding local overheating that could cause fluctuations in liquid temperature.

[0022] On the side of the membrane 11 away from the injection needle 2, i.e., inside the insulation layer, a first electrode is fixedly disposed. The two ends of the inner side of the first electrode are electrically connected to the heating element 12. The heating element 12 is provided with short-circuit isolation protection inside the membrane 11. The heating element 12 is intermittently disposed on the side near the first electrode, and the two ends of the intermittent parts are respectively connected to the first electrode. To improve the stability with the heating seat, a first magnetic layer 13 is attached to the side away from the membrane 11. The first magnetic layer 13 is a neodymium iron boron permanent magnet sheet with a thickness of 0.2 mm, which is used to achieve magnetic positioning with the heating seat 3.

[0023] The heating base 3 is an arc-shaped block that is hand-held and can be fixed to a workbench or held and operated by hand, depending on the scenario. Its structure includes: The heating seat 3 has an arc-shaped curved surface 31 on the side facing the injection needle 2. The radius of curvature of the arc-shaped curved surface 31 is adapted to the outer circumferential curvature of the heating kit 1, ensuring that when the heating seat 3 is close to the heating kit 1, the arc-shaped curved surface 31 can fit against the outer wall of the insulation layer of the heating kit 1. A second electrode is embedded in the middle of the inner side of the arc-shaped curved surface 31, with the first electrode and the second electrode being arranged correspondingly.

[0024] Corresponding to the first magnetic layer 13, a second magnetic layer is provided in the central area inside the arc-shaped surface 31. The second magnetic layer is also a neodymium iron boron permanent magnet sheet, and its magnetism is opposite to that of the first magnetic layer 13. It can precisely align the heating kit 1 and the coil system of the heating base 3 through magnetic attraction, ensuring that the two are in parallel contact and ensuring the connection stability of the first electrode and the second electrode.

[0025] Inside the heating base 3, a control system is integrated. This control system uses an STM32F030 microcontroller, which is small in size, low in power consumption, and suitable for handheld operation. The input terminal is connected to a sensor 32. The sensor 32 is a miniature NTC thermistor, model MF52-103J3950. The probe of the sensor 32 extends from the inside of the curved surface 31. When the heating base 3 is in contact with the heating kit 1, the probe of the sensor 32 can contact the outer wall of the membrane 11 of the heating kit 1, indirectly obtaining the temperature of the liquid inside the injection needle 2. By establishing a practical calibration relationship between the temperature of the outer wall of the membrane 11 and the temperature of the liquid inside the injection needle, the temperature measurement accuracy is improved, and the temperature signal is wirelessly transmitted to the control system in real time.

[0026] The outer wall of the heating base 3 is equipped with a display screen 33. If the display screen 33 conflicts with the size of the injection needle, the display screen can be extended and connected through an external interface. The display screen is a 0.96-inch OLED screen with a resolution of 128×64. The display screen 33 is connected to the output terminal of the control system and can display the temperature value collected by the sensor 32 in real time, including the heating status such as heating in progress / constant temperature, so as to facilitate the operator's monitoring. A button connected to the control system is provided on one side of the display screen 33. The button is used to realize the conductive connection control of the control system.

[0027] The control system is externally connected to a power supply circuit, which includes a rechargeable lithium battery or an external power source. The lithium battery has a capacity of 1000mAh, an output voltage of 5V, and a Type-C interface. The lithium battery supplies power to the control system and the display screen 33 through a voltage regulator module. The voltage output of the voltage regulator module includes 3.3V or 5V. The voltage can be selected by setting the button, thereby controlling different heating powers. The power supply can be turned on and off by the button on the outside of the heating base 3, which is suitable for convenient start and stop during handheld operation.

[0028] In use, relying on the flexible and bendable characteristics of the membrane 11, the membrane 11 of the heating kit 1 is first opened and placed on the area of ​​the injection needle 2 that needs to be heated, such as the middle of the handle 22 to the end of the handle 22 near the needle tip, so that the heating element 12 is in close contact with the outer wall of the handle; then, the heating seat 3 is held and its arc-shaped surface 31 is oriented toward the heating kit 1. Through the magnetic attraction of the first magnetic layer 13 and the second magnetic layer, the heating seat 3 and the heating kit 1 are automatically aligned. At this time, the first electrode and the second electrode are connected, and the sensor 32 is in contact with the outer wall of the membrane 11.

[0029] When the button on the heating base 3 is pressed, the power supply circuit provides current, which is directly delivered to the heating element 12. After the heating resistor is energized, it generates Joule heat, which is transferred to the injection needle 2 through the membrane 11, thereby heating the liquid inside the injection needle 2. When pressing a single button, different heating modes can be selected by changing the number of times the button is pressed, and multiple buttons can directly correspond to different heating powers. Intelligent control of the control system: Sensor 32 collects the temperature signal of the outer wall of the membrane 11 in real time and transmits it to the control system. The control system compares the collected temperature with the preset target temperature, such as 37°C. If the temperature is lower than the target value, the control system increases the driving voltage to 5V to increase the heat generation of the heating element 12. If the temperature reaches the target value, the control system decreases the driving voltage to 3V to maintain the low heat consumption state of the heating element 12 and achieve constant temperature control. Throughout the process, the display screen 33 shows the current temperature and heating status in real time. The operator can adjust the target temperature as needed by setting it through the buttons on the heating base 3.

[0030] Furthermore, if it is necessary to perform segmented heating or amplify the heating effect on different axial regions of the injection needle 2, 2-3 heating kits 1 can be arranged axially along the outer surface of the injection needle 2, and each heating kit 1 is configured with a heating seat 3. The control system of each heating seat 3 can independently set the target temperature, and the sensor 32 collects the temperature of the corresponding region to realize differentiated temperature control of different regions of the injection needle 2, adapting to the temperature requirements of complex sample processing scenarios.

[0031] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A heating kit, characterized in that, The kit is mounted on the injection needle and has a heating seat that matches the heating kit. The kit contains a first electrode and a heating element. The heating seat has a second electrode that matches the first electrode, a control system, and a sensor. The sensor is used to acquire temperature information and transmit it to the control system. The control system is used to drive the working state of the heating element.

2. A heating kit according to claim 1, characterized in that, The heating element includes a heating resistor, which has a curved structure that is obliquely surrounding the outer periphery of the injection needle.

3. A heating kit according to claim 1, characterized in that, A pair of first electrodes are provided on one side of the heating kit, and a pair of second electrodes are provided on the inside of the heating base.

4. A heating kit according to claim 1, characterized in that, The heating kit includes a membrane body that encloses the heating element and a first electrode on one side of the membrane body, with an insulation layer outside the membrane body.

5. A heating kit according to claim 1, characterized in that, The heating base includes an arc-shaped surface, and a second electrode is provided on the inner side of the arc-shaped surface.

6. A heating kit according to claim 5, characterized in that, A first magnetic layer is provided outside the membrane, and a second magnetic layer corresponding to the first magnetic layer is provided in the middle of the inner side of the arc-shaped surface.

7. A heating kit according to claim 1, characterized in that, Several heating elements are arranged axially along the outer surface of the handle of the injection needle, and each heating element is provided with a corresponding heating seat.

8. A heating kit according to any one of claims 1-7, characterized in that, The heating base has a display screen and buttons on the outside, which are connected to the control system.

9. A heating kit according to any one of claims 1-7, characterized in that, The heating element is made of materials including polyimide and graphene.

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