Water temperature alarm device

Abstract

The utility model discloses a water temperature alarm device comprising a main body of the alarm device, and a control unit is arranged in the main body; the detection unit is arranged on one side of the main body, the detection unit comprises a wire harness and a plurality of groups of temperature detection probes, and the temperature detection probes are correspondingly mounted at cooling water outlets of branch water paths of the water-cooled induction heating equipment; the alarm unit comprises light emitting diodes and a loudspeaker, the light emitting diodes are longitudinally distributed on the main body and correspond to the temperature detection probes in a one-to-one mode, corresponding branch waterway numbers are arranged on one sides of the light emitting diodes, and the loudspeaker is installed on one sides of the light emitting diodes and works synchronously with the light emitting diodes, so that the sound and light alarm function is achieved. The light-emitting diodes are longitudinally distributed and correspond to the branch water ways one to one, the fault branch circuits are directly displayed through the light-emitting positions and the corresponding numbers during alarming, and the fault positioning time is greatly shortened in cooperation with acousto-optic synchronous alarming of the loudspeaker.

Description

Technical Field

[0001] This utility model relates to the technical field of water temperature alarm equipment, specifically a water temperature alarm device. Background Technology

[0002] As an important heat processing equipment in modern industry, the stable operation of the internal cooling system of a water-cooled induction heating system directly affects the stability and safety of the equipment. Water-cooled induction heating equipment has many internal branch water channels. If one channel becomes blocked due to foreign objects or scale, hindering the flow of cooling water, the components on that channel will be damaged due to overheating.

[0003] Traditional water-cooled induction heating systems often lack temperature monitoring and alarms on every branch, with temperature control alarms only present on critical branches such as IGBT modules and rectifier modules. This makes it easy for obstructed water flow in other branches to damage components and potentially exacerbate existing problems. Some water-cooled induction heating systems, in addition to temperature control alarms on IGBT and rectifier modules, also have temperature-controlled switches on other branches. While these effectively protect components from damage when temperatures rise, locating the source of the alarm after it occurs is difficult because the equipment stops operating upon alarm activation. The temperature on the affected branch quickly drops due to the shutdown, potentially causing the temperature-controlled switch to deactivate, further complicating troubleshooting. Therefore, we need to propose a water temperature alarm device. Utility Model Content

[0004] The purpose of this invention is to provide a water temperature alarm device in which light-emitting diodes are distributed longitudinally and correspond one-to-one with each branch water channel. When an alarm is triggered, the faulty branch is directly displayed by the position of the light-emitting diode and its corresponding number. Combined with the audible and visual alarm of the horn, the fault location time is greatly shortened, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A water temperature alarm device, comprising:

[0007] The main body of the alarm device contains a control unit.

[0008] The detection unit is located on one side of the main body. The detection unit includes a wiring harness and several sets of temperature detection probes. The temperature detection probes are installed at the cooling water outlet of each branch water channel of the water-cooled induction heating equipment. The temperature detection probes are connected to the main body through the wiring harness to transmit the temperature signal to the control unit.

[0009] The alarm unit is located on one side of the main body. The alarm unit includes a light-emitting diode (LED) and a horn. The LEDs are vertically distributed on the main body and correspond one-to-one with each set of temperature detection probes. The corresponding branch water circuit number is set on one side of the LED. When the LED emits an alarm, it is easy for staff to know which branch water circuit it is. The horn is installed on one side of the LED and works synchronously with the LED to achieve the function of sound and light alarm.

[0010] Preferably, the main body is equipped with a display screen to display the temperature value of each branch water channel. The main body is also equipped with control buttons. The internal control unit of the main body collects the temperature data of each branch in real time through the temperature detection probe. It has a built-in threshold comparison algorithm. When the temperature of a branch exceeds the set threshold, it triggers an audible and visual alarm of light-emitting diode and speaker.

[0011] Preferably, one side of the main body is provided with an openable cover. The cover is made of transparent PVC material and is molded in one piece to facilitate the staff to observe the values ​​on the display screen and whether the light-emitting diodes are emitting light. The cover has honeycomb holes, which correspond to the position of the speaker to facilitate the transmission of alarm sounds.

[0012] Preferably, it also includes an installation unit for installing the main body. The installation unit includes a back plate set on the back of the main body and a pre-installed plate installed on the wall. The pre-installed plate is fixed by screws. Suction cups are symmetrically arranged at the four corners of the back plate. Exhaust valves are set on the suction cups. The main body is adsorbed onto the pre-installed plate by the suction cups.

[0013] Preferably, the back plate has a protrusion at its center, and a square iron sheet is bonded to the protrusion. The thickness of the square iron sheet is 2-4 mm.

[0014] Preferably, the pre-mounted plate has a groove at its center, and a magnet is embedded in the groove. The distance between the outer wall of the magnet and the outer wall of the pre-mounted plate corresponds to the thickness of the square iron sheet. When the main body is adsorbed onto the pre-mounted plate, the square iron sheet is inserted into the groove and adsorbed together with the magnet.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Achieve full temperature coverage monitoring of all cooling branches to avoid component damage and escalation of faults caused by blockage of non-critical branches; the control unit obtains the temperature of each branch in real time through temperature detection probes, and has a built-in threshold comparison algorithm to immediately trigger an alarm when the temperature of a branch exceeds the set threshold, ensuring that abnormal situations are detected in a timely manner.

[0017] 2. The LEDs are vertically distributed and correspond one-to-one with each branch. When an alarm is triggered, the faulty branch is directly displayed by the position of the LED and its corresponding number. Combined with the audible and visual alarm of the speaker, there is no need to check each branch one by one after stopping the machine, which greatly shortens the fault location time. Even if the temperature drops after the equipment is stopped, the control unit will still maintain the alarm state (such as the LEDs will continue to light up), avoiding the problem of the alarm signal disappearing due to the temperature drop of traditional temperature control switches, and ensuring that maintenance personnel can accurately obtain fault information. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the back plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the pre-assembled plate of this utility model;

[0022] Figure 5 This is the circuit schematic diagram of this utility model.

[0023] In the diagram: 1. Main body; 2. Cover; 3. Display screen; 4. Wiring harness; 5. Temperature detection probe; 6. Light-emitting diode; 7. Speaker; 8. Button; 9. Honeycomb hole; 10. Back panel; 11. Pre-installation plate; 12. Suction cup; 13. Protrusion; 14. Square iron sheet; 15. Groove; 16. Magnet. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-2 This utility model provides a technical solution:

[0026] A water temperature alarm device, comprising:

[0027] The alarm device has a main body 1, and a control unit is installed inside the main body 1;

[0028] The detection unit is located on one side of the main body 1. The detection unit includes a wire harness 4 and several sets of temperature detection probes 5. The temperature detection probes 5 are installed at the cooling water outlet of each branch water channel of the water-cooled induction heating equipment. The temperature detection probes 5 are connected to the main body 1 through the wire harness 4 to transmit the temperature signal to the control unit.

[0029] An alarm unit is located on one side of the main body 1. The alarm unit includes a light-emitting diode (LED) 6 and a horn 7. The LEDs 6 are longitudinally distributed on the main body 1 and correspond one-to-one with each group of temperature detection probes 5. The corresponding branch water circuit number is set on one side of the LEDs 6. When the LEDs 6 issue an alarm, it is easy for staff to know which branch water circuit it is. The horn 7 is installed on one side of the LEDs 6 and works synchronously with the LEDs 6 to achieve the function of sound and light alarm.

[0030] The main body 1 is equipped with a display screen 3 to display the temperature value of each branch water channel. The main body 1 is also equipped with a control button 8. The internal control unit of the main body 1 collects the temperature data of each branch in real time through the temperature detection probe 5. It has a built-in threshold comparison algorithm. When the temperature of a branch exceeds the set threshold, it triggers the sound and light alarm of the LED 6 and the speaker 7.

[0031] In actual use, the PLC controller inside the main body 1 acts as the core, receiving the digital signal from the temperature detection probe 5. Through the built-in threshold comparison algorithm, it compares the water temperature of each branch with the preset threshold (such as 60℃ warning, 75℃ alarm). When the temperature of a branch exceeds the limit, the controller sends an electrical signal to the alarm unit, triggering the LED 6 and the horn 7 to activate. It integrates the temperature data of each branch to achieve intelligent judgment of abnormal conditions and avoid the omissions of manual monitoring.

[0032] Temperature detection probes 5 (such as NTC thermistors) are installed at the outlets of each branch water circuit to sense the cooling water temperature and convert it into an electrical signal, which is then transmitted to the control unit via wiring harness 4. The probes utilize the principle of heat conduction; when water flow is obstructed, causing the water temperature to rise, the resistance value changes with the temperature. This change is then converted from analog to digital and identified by the controller. This changes the traditional mode of monitoring only critical branches, ensuring that temperature anomalies in each branch water circuit are detected and eliminating monitoring blind spots.

[0033] LEDs 6 are arranged vertically and correspond one-to-one with each branch probe. When the control unit determines that a branch is overheating, the corresponding LED 6 lights up (e.g., a solid red light), and the speaker 7 emits a buzzer sound. The sound and light signals are triggered synchronously to form a three-dimensional alarm prompt. The LEDs 6 correspond to the branch numbers, directly displaying the fault location and avoiding the difficulty in locating the fault due to temperature drop after a traditional alarm.

[0034] In summary, the control unit uses a high-performance microprocessor with powerful data processing and logical judgment capabilities. The control unit receives digital signals sent by the temperature detection probe 5 in the detection unit and analyzes and processes the water temperature of each branch. The control unit presets temperature thresholds for each branch. When the water temperature of a branch exceeds the corresponding temperature threshold, the control unit determines that the branch has a temperature abnormality and sends corresponding control signals to the alarm unit and the display screen 3.

[0035] In this application, the control unit of the main body 1 is controlled by a PLC controller. The control circuit of the PLC controller can be easily implemented by those skilled in the art through simple programming, and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here. The detection unit, alarm unit, and installation unit are independently integrated, resulting in a simple hardware structure. The wiring harness 4 connection and PLC control both adopt mature technologies, reducing production costs and maintenance difficulty.

[0036] Please see Figure 5 :

[0037] As one embodiment of this application, its schematic diagram is as follows: Figure 5 As shown, this circuit is characterized by its simple structure, low cost, and few external connections. When an alarm signal occurs, the microcontroller's AD conversion identifies which circuit is faulty and displays the result visually on display screen 3. This allows you to clearly identify which circuit experienced the overtemperature alarm. In this embodiment, four sets of detection lines are set up corresponding to four branch water circuits, as detailed below:

[0038] One pin of temperature switch SW1 is connected to one pin of C1 as a lead-out pin (positive signal terminal). The other pin of SW1 is connected to one pin of R1. The other pin of R1 is connected to the positive terminal of LED1. The negative terminal of LED1 is connected to the other pin of C1 as another lead-out pin (negative signal terminal).

[0039] One pin of temperature switch SW2 is connected to one pin of C2 as a lead-out pin (positive signal terminal). The other pin of SW2 is connected to one pin of R2. The other pin of R2 is connected to the positive terminal of LED2. The negative terminal of LED2 is connected to the other pin of C2 as another lead-out pin (negative signal terminal).

[0040] One pin of temperature switch SW3 is connected to one pin of C3 as a lead-out pin (positive signal terminal). The other pin of SW3 is connected to one pin of R3. The other pin of R3 is connected to the positive terminal of LED3. The negative terminal of LED3 is connected to the other pin of C3 as a lead-out pin (negative signal terminal).

[0041] One pin of temperature switch SW4 is connected to one pin of C4 as a lead-out pin (positive signal terminal). The other pin of SW4 is connected to one pin of R4. The other pin of R4 is connected to the positive terminal of LED4. The negative terminal of LED4 is connected to the other pin of C4 as a lead-out pin (negative signal terminal).

[0042] Connect all the positive terminals of the signal together and connect them to one end of R0 as the positive terminal of the analog input signal of the microcontroller; connect all the negative terminals of the signal together as the ground of the power supply and the negative terminal of the analog input signal; connect the other end of R0 to the power supply terminal.

[0043] This indicates that the values ​​of R1, R2, R3, and R4 in the circuit are not the same.

[0044] With the above circuitry, when the water temperature of a certain outlet is too high, the corresponding LED 6 will light up, and a voltage value lower than VCC will be obtained at the positive terminal of the signal. Since the values ​​of R1, R2, R3, and R4 are different, the voltage value obtained at the positive terminal of the signal will also be different when the water temperature of different outlets is too high. In this way, through the microcontroller program, the corresponding water temperature alarm can be displayed intuitively on the display screen 3.

[0045] The above circuitry provides a simple, stable, and reliable high-temperature alarm circuit. Furthermore, by extending the circuit with branches (SW*, R*, C*, LED*), it is easy to obtain high-temperature detection for more water outlets, thus enabling high-temperature detection in high-power water-cooled induction heating systems.

[0046] Please see Figure 1 :

[0047] One side of the main body 1 is provided with an openable cover 2. The cover 2 is a one-piece molded cover made of transparent PVC material, which makes it easy for staff to observe the values ​​on the display screen 3 and whether the light-emitting diode 6 is lit. The cover 2 is provided with honeycomb holes 9, which correspond to the position of the speaker 7, so that the alarm sound can be transmitted.

[0048] The cover 2 is made of transparent PVC material and is fixed to one side of the main body 1 by hinges or buckles, covering the display screen 3 and the light-emitting diode 6. The cover 2 can provide good protection for the panel of the main body 1. The honeycomb holes 9 are aligned with the speaker 7, and the alarm sound is transmitted smoothly by using the principle of acoustic diffraction. The transparent material does not block the display content, and the honeycomb hole design ensures the volume while providing sound insulation, thus taking into account both protection and alarm effects.

[0049] Please see Figure 1-4 Traditional alarm devices are mostly fixed directly to the wall with bolts, which is cumbersome when disassembly and maintenance are required. To solve this problem, this application also makes the following design:

[0050] It also includes an installation unit for installing the main body 1. The installation unit includes a back plate 10 set on the back of the main body 1 and a pre-installed plate 11 installed on the wall. The pre-installed plate 11 is fixed by screws. Suction cups 12 are symmetrically arranged at the four corners of the back plate 10. Exhaust valves are provided on the suction cups 12. The main body 1 is adsorbed onto the pre-installed plate 11 by the suction cups 12.

[0051] In this embodiment, the suction cups 12 at the four corners of the back plate 10 of the main body 1 exhaust air through the exhaust valve and are adsorbed onto the pre-installed plate 11 by atmospheric pressure; compared with traditional bolt installation, the suction cups 12 can be installed or removed within 10 seconds, which greatly improves maintenance efficiency.

[0052] For further details, please refer to Figure 3-4 :

[0053] A protrusion 13 is provided at the center of the back plate 10, and a square iron sheet 14 with a thickness of 2-4mm is bonded to the protrusion 13. A groove 15 is provided at the center of the pre-assembly plate 11, and a magnet 16 is embedded in the groove 15. The distance between the outer wall of the magnet 16 and the outer wall of the pre-assembly plate 11 corresponds to the thickness of the square iron sheet 14. When the main body 1 is attached to the pre-assembly plate 11, the square iron sheet 14 is inserted into the groove 15 and is attached to the magnet 16.

[0054] The square iron plate 14 in the center of the back plate 10 is inserted into the groove 15 of the pre-installed plate 11, and magnetically attracts the embedded magnet 16 (attraction force ≥30N), ensuring that the main body 1 remains vertical after installation, avoiding unclear display or false alarm signals caused by tilting. The suction cup 12 provides double fixation to ensure that the main body 1 is not easy to fall off. To disassemble, simply open the exhaust valve to separate the iron plate and the magnet 16.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A water temperature alarm device, characterized in that, include: The alarm device has a main body (1), and a control unit is installed inside the main body (1); The detection unit is located on one side of the main body (1). The detection unit includes a wire harness (4) and several sets of temperature detection probes (5). The temperature detection probes (5) are installed at the cooling water outlet of each branch water circuit of the water-cooled induction heating equipment. The temperature detection probes (5) are connected to the main body (1) through the wire harness (4) to transmit the temperature signal to the control unit. An alarm unit is set on one side of the main body (1). The alarm unit includes a light-emitting diode (6) and a horn (7). The light-emitting diodes (6) are longitudinally distributed on the main body (1) and correspond one-to-one with each set of temperature detection probes (5). The corresponding branch waterway number is set on one side of the light-emitting diodes (6). When the light-emitting diodes (6) issue an alarm, it is easy for the staff to know which branch waterway it is. The horn (7) is installed on one side of the light-emitting diodes (6) and works synchronously with the light-emitting diodes (6) to play the function of sound and light alarm.

2. The water temperature alarm device according to claim 1, characterized in that: The main body (1) is equipped with a display screen (3) to display the temperature value of each branch water channel. The main body (1) is also equipped with a control button (8). The internal control unit of the main body (1) collects the temperature data of each branch in real time through the temperature detection probe (5). It has a built-in threshold comparison algorithm. When the temperature of a branch exceeds the set threshold, it triggers the sound and light alarm of the light-emitting diode (6) and the speaker (7).

3. The water temperature alarm device according to claim 1, characterized in that: The main body (1) has an openable cover (2) on one side. The cover (2) is a transparent PVC material molded in one piece, which makes it easy for staff to observe the values ​​of the display screen (3) and whether the light-emitting diode (6) is lit. The cover (2) has honeycomb holes (9) which correspond to the position of the speaker (7) to facilitate the transmission of alarm sound.

4. The water temperature alarm device according to claim 1, characterized in that: It also includes an installation unit for installing the main body (1). The installation unit includes a back plate (10) set on the back of the main body (1) and a pre-installed plate (11) installed on the wall. The pre-installed plate (11) is fixed by screws. Suction cups (12) are symmetrically arranged at the four corners of the back plate (10). An exhaust valve is provided on the suction cup (12). The main body (1) is adsorbed onto the pre-installed plate (11) by the suction cup (12).

5. A water temperature alarm device according to claim 4, characterized in that: The back plate (10) has a protrusion (13) at its center, and a square iron sheet (14) is bonded to the protrusion (13). The thickness of the square iron sheet (14) is 2-4 mm.

6. A water temperature alarm device according to claim 5, characterized in that: The pre-mounted plate (11) has a groove (15) in the center, and a magnet (16) is embedded in the groove (15). The distance between the outer wall of the magnet (16) and the outer wall of the pre-mounted plate (11) corresponds to the thickness of the square iron sheet (14). When the main body (1) is attached to the pre-mounted plate (11), the square iron sheet (14) is inserted into the groove (15) and attached to the magnet (16).

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