Temperature detection system

Abstract

The utility model relates to the technical field of heat exchangers, and provides a temperature detection system. The temperature detection system comprises at least one temperature sensor and a display device. The temperature sensor is located at the joint of the straight pipe section and the bent pipe section of the air conditioner heat exchanger and used for detecting the temperature of the joint. The display device is in communication connection with the temperature sensor and used for displaying temperature. At least one temperature sensor is arranged at the connecting position of the straight pipe section and the bent pipe section of the air conditioner heat exchanger, so that actual temperature data of the connecting position can be accurately monitored and collected in real time; the display device displays the temperature value of the welding spot in real time, visual and consistent reading is provided, human judgment errors are eliminated, and accurate determination of the temperature of the welding spot is achieved; the whole system can solve the technical problems that in the prior art, due to the fact that judgment of people on the temperature of the welding spot mainly depends on previous experience and visual inspection, individual differences are obvious, and the temperature of the welding spot cannot be accurately determined.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger processing, in particular to a temperature detection system. Background Art

[0002] The air conditioner consists of two devices (evaporator and condenser), which are also called heat exchangers. The heat exchanger is usually composed of copper tubes. The copper tubes include straight tube sections and curved tube sections (or elbows). The straight tube sections and curved tube sections are generally welded by brazing equipment in the industry. During welding, the soldering point temperature needs to be maintained between 732°C and 843°C. If it is lower than this temperature range, the solder may not fully melt and penetrate. If it is higher than this range, the copper tube may melt, affecting product quality.

[0003] However, people's judgment of solder point temperature mainly relies on past experience and visual observation, and individual differences are obvious, making it impossible to accurately determine the temperature of the solder point. Utility Model Content

[0004] The utility model provides a temperature detection system for solving the technical problem that the temperature of soldering points cannot be accurately determined because people mainly rely on past experience and naked eye observation to judge the temperature of soldering points, resulting in obvious individual differences.

[0005] The utility model provides a temperature detection system, comprising at least one temperature sensor and a display device; the temperature sensor is located at the connection between the straight pipe section and the curved pipe section of the air conditioner heat exchanger, and is used to detect the temperature of the connection; the display device is communicatively connected to the temperature sensor and is used to display the temperature.

[0006] According to an embodiment of the present utility model, there are a plurality of temperature sensors, and the plurality of temperature sensors are arranged at intervals along the extending direction of the conveyor belt when the air-conditioning heat exchanger is placed on the conveyor belt.

[0007] According to one embodiment of the utility model, the air-conditioning heat exchanger includes a first end and a second end relatively arranged along the extension direction of the conveyor belt; a plurality of temperature sensors include a first temperature sensor, a second temperature sensor and a third temperature sensor; the first temperature sensor is located at the first end; the second temperature sensor is located at the second end; the third temperature sensor is located in the middle of the air-conditioning heat exchanger.

[0008] According to one embodiment of the present invention, the temperature sensor is a "k" type thermocouple.

[0009] According to one embodiment of the present invention, the display device is a thermocouple thermometer for displaying and recording temperature.

[0010] According to one embodiment of the utility model, it also includes a first controller, a wireless transmitting module, a wireless receiving module and a second controller; the first controller is electrically connected to the wireless transmitting module and the temperature sensor; the wireless receiving module is wirelessly connected to the wireless transmitting module, and the wireless receiving module is electrically connected to the second controller; the second controller is electrically connected to the display device.

[0011] According to one embodiment of the present utility model, the wireless transmitting module is a LoRa transmitting module; and the wireless receiving module is a LoRa receiving module.

[0012] According to one embodiment of the utility model, a warning device is also included, which is electrically connected to the second controller and is used to issue a warning reminder when the temperature is lower than a first preset value or higher than a second preset value.

[0013] According to an embodiment of the present invention, the warning device is a sound unit, and the sound unit is used to issue a sound reminder when the temperature is lower than a first preset value or higher than a second preset value.

[0014] According to an embodiment of the present invention, the warning device is a light emitting unit, and the light emitting unit is used to emit a light reminder when the temperature is lower than a first preset value or higher than a second preset value.

[0015] The characteristics and advantages of the temperature detection system of the utility model are:

[0016] By setting at least one temperature sensor at the connection position of the straight pipe section and the curved pipe section of the air-conditioning heat exchanger, the actual temperature data of the connection position (solder point) can be monitored and collected in real time and accurately; the display device is connected to the temperature sensor, and the solder point temperature value is displayed in real time, providing intuitive and consistent readings, eliminating human judgment errors, and realizing the accurate determination of the solder point temperature; the whole system can solve the technical problem in the prior art that people's judgment on the solder point temperature is mainly based on past experience and visual observation, resulting in obvious individual differences and the inability to accurately determine the solder point temperature. On this basis, it can effectively prevent the copper tube from melting and deforming due to excessively high solder point temperature, or insufficient melting and insufficient penetration of the solder due to too low solder point temperature, thereby greatly improving the consistency of the solder point quality of the air-conditioning heat exchanger and the overall reliability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 1 It is an implementation method of the temperature detection system of the utility model.

[0019] Figure 2 This is another implementation of the temperature detection system of the present utility model.

[0020] Reference numerals:

[0021] 110. temperature sensor; 111. first temperature sensor; 112. second temperature sensor; 113. third temperature sensor; 120. display device; 130. first controller; 140. wireless transmitting module; 150. wireless receiving module; 160. second controller; 200. air conditioning heat exchanger; 201. straight pipe section; 202. curved pipe section; 300. conveyor belt; T. extension direction of the conveyor belt. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present embodiment.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this embodiment, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0025] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like 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, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0026] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] Figure 1 to Figure 2 The temperature detection system provided by the utility model is shown. As can be seen from the figure, the temperature detection system of the utility model includes at least one temperature sensor 110 and a display device 120; the temperature sensor 110 is located at the connection between the straight pipe section 201 and the curved pipe section 202 of the air-conditioning heat exchanger 200, and is used to detect the temperature of the connection; the display device 120 is communicatively connected to the temperature sensor 110, and is used to display the temperature.

[0028] In specific implementation, by setting at least one temperature sensor 110 at the connection position between the straight pipe section 201 and the curved pipe section 202 of the air-conditioning heat exchanger 200, the actual temperature data of the connection position (solder point) can be accurately monitored and collected in real time; the display device 120 is connected to the temperature sensor 110, and the solder point temperature value is displayed in real time, providing intuitive and consistent readings, eliminating human judgment errors, and realizing accurate determination of the solder point temperature; the entire system can solve the technical problem in the prior art that people's judgment of the solder point temperature mainly relies on past experience and naked eye observation, resulting in obvious individual differences and the inability to accurately determine the solder point temperature. On this basis, it can effectively prevent the copper tube from melting and deforming due to excessively high solder point temperature, or insufficient melting and insufficient penetration of the solder due to too low solder point temperature, thereby greatly improving the consistency of the solder point quality of the air-conditioning heat exchanger 200 and the overall reliability of the product.

[0029] In this embodiment, the temperature sensor 110 can be a "k" type thermocouple, and the temperature sensor 110 can be glued inside the connection position between the straight pipe section 201 and the curved pipe section 202 to facilitate welding and disassembly after welding and prevent interference during welding; the display device 120 can be an existing one, for example, or it can be called a thermocouple thermometer, which is used to display and record temperature, and the temperature sensor 110 can be inserted into the thermocouple thermometer.

[0030] In specific implementation, a "k" type thermocouple can be placed close to the welding point. During welding, the "k" type thermocouple truly reflects the temperature change at the welding point, and obtains a temperature change curve to ensure that the temperature on the temperature change curve meets the preset requirements; among them, if the temperature is too high, the gas flow rate of the welding equipment can be reduced; if the temperature is too low, the gas flow rate of the welding equipment can be increased.

[0031] According to an embodiment of the present invention, there are multiple temperature sensors 110 , and the multiple temperature sensors 110 are arranged at intervals along the extension direction T of the conveyor belt 300 when the air-conditioning heat exchanger 200 (or workpiece) is placed on the conveyor belt 300 .

[0032] In a specific implementation, multiple temperature sensors 110 are arranged along the conveyor belt 300 of the air-conditioning heat exchanger 200 to form a distributed temperature monitoring network, which can continuously and synchronously obtain temperature information at different positions, which is conducive to a comprehensive understanding and analysis of the temperature distribution of the air-conditioning heat exchanger 200 during welding.

[0033] According to one embodiment of the utility model, the air-conditioning heat exchanger 200 includes a first end and a second end relatively arranged along the extension direction T of the conveyor belt 300; a plurality of temperature sensors 110 include a first temperature sensor 111, a second temperature sensor 112 and a third temperature sensor 113; the first temperature sensor 111 is located at the first end; the second temperature sensor 112 is located at the second end; the third temperature sensor 113 is located in the middle of the air-conditioning heat exchanger 200.

[0034] In specific implementation, temperature sensors 110 are provided at the first end, the second end and the middle position, so that the temperatures of key areas at the beginning, end and middle of the air-conditioning heat exchanger 200 can be accurately measured and compared, which helps to promptly detect temperature anomalies and uneven heating and cooling problems.

[0035] According to one embodiment of the utility model, it also includes a first controller 130, a wireless transmission module 140, a wireless receiving module 150 and a second controller 160; the first controller 130 is electrically connected to the wireless transmission module 140 and the temperature sensor 110; the wireless receiving module 150 is wirelessly connected to the wireless transmission module 140, and the wireless receiving module 150 is electrically connected to the second controller 160; the second controller 160 is electrically connected to the display device 120.

[0036] During specific implementation, the wireless transmitting module 140 cooperates with the wireless receiving module 150 to achieve remote transmission and processing of temperature data.

[0037] In this embodiment, the first controller 130 can package the temperature data received and send it to the wireless transmission module 140 through a serial interface (such as UART or SPI) or a general IO port, and can set the working parameters of the wireless transmission module 140, such as frequency, transmission power, spreading factor and coding rate, etc., and can send the temperature data through AT commands (if the module supports) or programming interfaces; at a remote location, the wireless receiving module 150 needs to be connected to the second controller 160 at the receiving end and configured with the same channel parameters and protocols (if applicable) in order to correctly receive the data; when the temperature data sent by the wireless transmission module 140 arrives, the wireless receiving module 150 0 decodes the data and transmits it to the second controller 160 connected to it; the second controller 160 receives the data transmitted by the wireless receiving module 150 and parses the temperature; according to application requirements, the controller can further process this information, such as displaying the temperature, storing records, triggering alarms or controlling other devices; in summary, the entire system process is: the temperature sensor 110 senses the temperature -> the temperature sensor 110 converts the signal -> the first controller 130 obtains the signal and sends it through the wireless transmitting module 140 -> the temperature (data) is transmitted wirelessly -> the wireless receiving module 150 receives the data -> the data is transmitted to the receiving end second controller 160 for processing and execution of subsequent operations.

[0038] In this embodiment, the wireless transmitting module 140 is a LoRa transmitting module; and the wireless receiving module 150 is a LoRa receiving module.

[0039] According to one embodiment of the utility model, a warning device is also included, which is electrically connected to the second controller 160 and is used to issue a warning reminder when the temperature is lower than a first preset value (e.g., 732°C) or higher than a second preset value (e.g., 843°C).

[0040] In specific implementation, when it is detected that the temperature exceeds the preset safety limit, the system can automatically trigger the alarm mechanism and provide real-time feedback to prevent the solder joint temperature from being too high or too low.

[0041] In a feasible implementation manner, the warning device is a sound unit, and the sound unit is used to issue a sound reminder when the temperature is lower than a first preset value or higher than a second preset value.

[0042] In a specific implementation, when the warning device is in the form of a sound unit, it can quickly attract the attention of the operator through a sound alarm when the temperature is abnormal, so that the operator can respond quickly and take countermeasures.

[0043] In another feasible implementation, the warning device is a light emitting unit, and the light emitting unit is used to emit a light reminder when the temperature is lower than a first preset value or higher than a second preset value.

[0044] In a specific implementation, when the warning device is in the form of a light-emitting unit, it can intuitively display whether the temperature is within the normal range through visual signals (such as flashing or color changes), which is particularly suitable for noisy environments or occasions where silent warnings are required.

[0045] Working principle:

[0046] The test interval is from the time when the workpiece starts to contact the welding flame of the brazing equipment to the time when the workpiece leaves the welding flame. The wireless transmitting module 140 (or signal transmitter) wirelessly transmits the measured temperature data to the wireless receiving module 150 (or signal receiver).

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A temperature detection system, characterized in that: comprising at least one temperature sensor (110) and a display device (120); The temperature sensor (110) is located at the connection between the straight pipe section (201) and the curved pipe section (202) of the air conditioner heat exchanger (200), and is used to detect the temperature of the connection; The display device (120) is communicatively connected to the temperature sensor (110) and is used to display the temperature.

2. The temperature detection system according to claim 1, characterized in that: There are a plurality of temperature sensors (110), and when the air-conditioning heat exchanger (200) is placed on the conveyor belt (300), the plurality of temperature sensors (110) are arranged at intervals along an extension direction (T) of the conveyor belt (300).

3. The temperature detection system according to claim 2, characterized in that: The air conditioning heat exchanger (200) comprises a first end and a second end which are arranged opposite to each other along the extension direction (T) of the conveyor belt (300); The plurality of temperature sensors (110) include a first temperature sensor (111), a second temperature sensor (112) and a third temperature sensor (113); The first temperature sensor (111) is located at the first end; The second temperature sensor (112) is located at the second end; The third temperature sensor (113) is located in the middle of the air-conditioning heat exchanger (200).

4. The temperature detection system according to claim 1, characterized in that: The temperature sensor (110) is a "k" type thermocouple.

5. The temperature detection system according to claim 1, characterized in that: The display device (120) is a thermocouple thermometer, used for displaying and recording the temperature.

6. The temperature detection system according to any one of claims 1 to 5, characterized in that: It also includes a first controller (130), a wireless transmission module (140), a wireless receiving module (150) and a second controller (160); The first controller (130) is electrically connected to the wireless transmission module (140) and the temperature sensor (110); The wireless receiving module (150) is wirelessly connected to the wireless transmitting module (140), and the wireless receiving module (150) is electrically connected to the second controller (160); The second controller (160) is electrically connected to the display device (120).

7. The temperature detection system according to claim 6, characterized in that: The wireless transmission module (140) is a LoRa transmission module; The wireless receiving module (150) is a LoRa receiving module.

8. The temperature detection system according to claim 6, characterized in that: It also includes a warning device, which is electrically connected to the second controller (160) and is used to issue a warning reminder when the temperature is lower than a first preset value or higher than a second preset value.

9. The temperature detection system according to claim 8, characterized in that: The warning device is a sound unit, and the sound unit is used to issue a sound reminder when the temperature is lower than the first preset value or higher than the second preset value.

10. The temperature detection system according to claim 8, characterized in that: The warning device is a light emitting unit, and the light emitting unit is used to emit a light reminder when the temperature is lower than the first preset value or higher than the second preset value.

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