Temperature control detection system

Abstract

A temperature control detection system is used for detecting electric and thermal states of heating equipment. The heating device comprises a residual-current circuit breaker, an electromagnetic contactor, a solid-state relay and a heater. The temperature control detection system comprises a control device, a tripping detector, an under-phase detector and a current detector. When the tripping detector detects that the residual-current circuit breaker trips, a first abnormal signal is generated and sent to the control device. When the open-phase detector detects that the three-phase voltage is unbalanced, a second abnormal signal is generated and sent to the control device. When the current detector detects continuous current surge or the current is continuously lower than the threshold value, a third abnormal signal is generated and sent to the control device. And when the control device receives the first abnormal signal, the second abnormal signal or the third abnormal signal, the heater stops running.

Description

Technical Field

[0001] The present invention relates to the field of factory affairs, and in particular to a temperature control and detection system. Background Art

[0002] Today's electronic products, comprised of chips, circuit boards, and panels, typically undergo multiple manufacturing processes. Temperature is a crucial monitoring parameter for process equipment throughout these processes to prevent subsequent product deformation and electrical failure caused by temperature effects. Therefore, each device is equipped with temperature monitoring devices such as thermocouples and thermal detectors to monitor the temperature of the entire device or the product, notifying the factory control center when the temperature exceeds a threshold.

[0003] However, as the production cost of products increases, when temperature abnormalities occur, products have usually already been produced, and these products may have to be scrapped, which greatly increases the overall production cost and time. Summary of the Invention

[0004] To address the challenges faced by existing technologies, a temperature control and detection system is provided. The temperature control and detection system is electrically connected to a heating device to detect the electrical and thermal status of the heating device. The heating device includes a residual current circuit breaker, an electromagnetic contactor, a solid-state relay, and a heater. In some embodiments, the temperature control and detection system includes a control device, a trip detector, a phase loss detector, and a current detector.

[0005] The control device is electrically connected to the leakage circuit breaker, electromagnetic contactor, solid-state relay, and heater. A trip detector is electrically connected to the control device and the leakage circuit breaker. Upon detecting a trip of the leakage circuit breaker, the trip detector generates a first abnormality signal to the control device, thereby terminating heater operation. A phase loss detector is electrically connected to the electromagnetic contactor, solid-state relay, and control device. Upon detecting a three-phase voltage imbalance, the trip detector generates a second abnormality signal to the control device, thereby terminating heater operation. A current detector is electrically connected to the solid-state relay, heater, and control device. Upon detecting a continuous current surge or a current continuously below a threshold, the trip detector generates a third abnormality signal to the control device, thereby terminating heater operation.

[0006] In some embodiments, the control device comprises a programmable logic control device.

[0007] In some embodiments, the temperature control detection system further includes an alarm unit. When the control device receives the first abnormality signal, the second abnormality signal, or the third abnormality signal, the control device sends an activation signal to activate the alarm unit.

[0008] In some embodiments, the temperature control detection system further includes a communication unit. When the control device receives the first abnormality signal, the second abnormality signal, or the third abnormality signal, the control device transmits the first abnormality signal, the second abnormality signal, or the third abnormality signal through the communication unit.

[0009] In some embodiments, the temperature control detection system further includes an overheating detector connected to the heater and the control device. When it is detected that the temperature of the heater is too high, the overheating detector generates a fourth abnormality signal to the control device to terminate the operation of the heater.

[0010] In more detail, in some embodiments, the temperature control detection system further includes an alarm unit. When the control device receives the first abnormality signal, the second abnormality signal, the third abnormality signal, or the fourth abnormality signal, it sends an activation signal to activate the alarm unit.

[0011] In more detail, in some embodiments, the temperature control detection system further includes a communication unit. When the control device receives the first abnormality signal, the second abnormality signal, the third abnormality signal, or the fourth abnormality signal, the control device transmits the first abnormality signal, the second abnormality signal, the third abnormality signal, or the fourth abnormality signal through the communication unit.

[0012] Furthermore, in some embodiments, the temperature control detection system further includes a resistance detector connected to the heater, which generates a fifth abnormality signal to the control device to terminate the operation of the heater when it detects that the fuse of the heater has blown.

[0013] In more detail, in some embodiments, the temperature control detection system further includes an alarm unit, which sends an activation signal to activate the alarm unit when the control device receives the first abnormality signal, the second abnormality signal, the third abnormality signal, the fourth abnormality signal, or the fifth abnormality signal.

[0014] In more detail, in some embodiments, the temperature control detection system further includes a communication unit. When the control device receives the first abnormal signal, the second abnormal signal, the third abnormal signal, the fourth abnormal signal, or the fifth abnormal signal, the control device transmits the first abnormal signal, the second abnormal signal, the third abnormal signal, the fourth abnormal signal, or the fifth abnormal signal through the communication unit.

[0015] As described in the aforementioned embodiments, by providing a trip detector, a phase loss detector, and a current detector, as well as designing a logic circuit for the control device, an early warning notification can be provided when the voltage or current of the equipment is abnormal, and the operation of the heater can be interrupted. This can prevent temperature anomalies from occurring between processes, thereby improving the overall yield and reducing the costs associated with product scrapping.

[0016] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 1 is a block diagram of a first embodiment of a temperature control and detection system.

[0018] Figure 2 FIG. 4 is a block diagram of a second embodiment of a temperature control and detection system.

[0019] Among them, the reference numerals

[0020] 1: Temperature control detection system

[0021] 10: Control device

[0022] 20: Escape Detector

[0023] 30: Phase loss detector

[0024] 40: Current detector

[0025] 50: Warning unit

[0026] 60: Communication unit

[0027] 70: Overheat detector

[0028] 80: Resistance detector

[0029] 500: Heating equipment

[0030] 510: Leakage circuit breaker

[0031] 520: Electromagnetic contactor

[0032] 530: Solid-state relay

[0033] 540: Heater

[0034] A1: First abnormal signal

[0035] A2: Second abnormal signal

[0036] A3: The third abnormal signal

[0037] A4: The fourth abnormal signal

[0038] A5: The fifth abnormal signal

[0039] E: Actuation signal DETAILED DESCRIPTION

[0040] The structural principle and working principle of the present invention are described in detail below with reference to the accompanying drawings:

[0041] It should be understood that when an element is referred to as being "disposed" on another element, it can mean that the element is directly located on the other element, or that an intervening element is present, connecting the element to the other element. Conversely, when an element is referred to as being "directly disposed on" or "directly disposed to" another element, it should be understood that this clearly defines that there are no intervening elements.

[0042] In addition, the terms "first", "second", and "third" are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part, and do not necessarily indicate their order. In addition, relative terms such as "lower" and "upper" may be used in this article to describe the relationship between one element and another element. It should be understood that relative terms are intended to include different orientations of the device in addition to the orientation shown in the figure. For example, if a device in a figure is turned over, the element described as being on the "lower" side of the other elements will be oriented on the "upper" side of the other elements. This only represents a relative orientation relationship, not an absolute orientation relationship.

[0043] Also refer to Figure 1 Typically, heating equipment 500 includes a leakage current breaker 510, an electromagnetic contactor 520, a solid-state relay 530, and a heater 540. Current flows sequentially through leakage current breaker 510, electromagnetic contactor 520, solid-state relay 530, and heater 540. However, if leakage current breaker 510 leaks or shorts, the three-phase current flowing through electromagnetic contactor 520 is unbalanced, solid-state relay 530 malfunctions, or heater 540 malfunctions—for example, if a fuse melts after a previous process is completed while heating is not in progress—then heater 540 may fail to heat or overheat. These abnormalities are difficult to detect in the early stages of the process. This can lead to problems being discovered only after the process is complete, or the process being halted mid-process, resulting in product scrapping.

[0044] Therefore, in order to solve this problem, a temperature control detection system 1 is provided herein. Figure 1 FIG is a block diagram of the first embodiment of the temperature control detection system. Figure 1 As shown, the temperature control detection system 1 includes a control device 10, a trip detector 20, a phase loss detector 30, and a current detector 40. The control device 10 is electrically connected to a residual current circuit breaker 510, an electromagnetic contactor 520, a solid-state relay 530, and a heater 540. The trip detector 20 is electrically connected to the control device 10 and the residual current circuit breaker 510. When it detects that the residual current circuit breaker 510 has tripped, it generates a first abnormality signal A1 to the control device 10.

[0045] The phase loss detector 30 is electrically connected to the electromagnetic contactor 520, the solid-state relay 530, and the control device 10. When it detects a three-phase voltage imbalance at the output of the solid-state relay 530, it generates a second abnormality signal A2 to the control device. The current detector 40 is electrically connected to the solid-state relay 530, the heater 540, and the control device 10. When it detects a sustained current surge or a current continuously below a threshold, it generates a third abnormality signal A3 to the control device 10. The control device 10 comprises a programmable logic controller, and the current detector 40 may comprise a current transformer. When the control device 10 receives the first abnormality signal A1, the second abnormality signal A2, or the third abnormality signal A3, it terminates the operation of the heater 540.

[0046] Here, the control device 10 can add a new circuit logic to confirm the first abnormal signal A1, the second abnormal signal A2, or the third abnormal signal A3. For example, when the contacts of the leakage circuit breaker 510 or the heater 540 are conductive, the trip detector 20 determines that the leakage circuit breaker 510 has tripped. If the leakage circuit breaker 510 has tripped, the first abnormal signal A1 is correct. When the contacts of the heater 540, the electromagnetic contactor 520, and the solid-state relay 530 are all conductive, it is determined that the three-phase voltage is unbalanced (phase loss), and the second abnormal signal A2 is determined to be consistent. When the contacts of the heater 540 and the electromagnetic contactor 520 are conductive, but the solid-state relay 530 is not conductive, it is determined that the current setting is too low, and the third abnormal signal A3 is determined to be consistent. However, the above is merely an example and is not intended to be limiting.

[0047] Further, refer again to Figure 1 In some embodiments, the temperature control detection system 1 further includes an alarm unit 50 and a communication unit 60. In some embodiments, when the control device 10 receives the first abnormality signal A1, the second abnormality signal A2, or the third abnormality signal A3, it issues an activation signal E to activate the alarm unit 50. The alarm unit 50 may be an audible or visual device to warn of an abnormal state of the leakage circuit breaker 510, the electromagnetic contactor 520, or the solid-state relay 530. Furthermore, when the control device 10 receives the first abnormality signal A1, the second abnormality signal A2, or the third abnormality signal A3, the control device 10 transmits the first abnormality signal A1, the second abnormality signal A2, or the third abnormality signal A3 via the communication unit 60. The communication unit 60 may also include encryption and decryption functions to transmit the first abnormality signal A1, the second abnormality signal A2, or the third abnormality signal A3 to a field device or a plant monitoring terminal for equipment replacement or repair.

[0048] Figure 2 FIG is a block diagram of the second embodiment of the temperature control detection system. Figure 2 As shown, refer to Figure 1In the second embodiment, the temperature control detection system 1 further includes an overheating detector 70 connected to the heater 540 and the control device 10. When the overheating detector 70 detects that the temperature of the heater 540 is too high, it generates a fourth abnormal signal A4 to the control device 10 to terminate the operation of the heater 540.

[0049] Furthermore, the temperature control detection system 1 further includes a resistance detector 80 connected to the heater 540. When it detects that the fuse of the heater 540 has blown, it generates a fifth abnormality signal A5 to the control device 10, thereby terminating the operation of the heater 540. It should be noted that both the overheat detector 70 and the resistance detector 80 independently monitor the status of the heater 540. If any problem is detected, such as a blown fuse during startup, the operation of the heater 540 is terminated, thereby avoiding process interruption or overheating problems and achieving a preventative effect.

[0050] Furthermore, control device 10 may also include additional circuit logic for determination. For example, when the contact of heater 540 is conductive and the connection resistance detector 80 is also conductive, fifth abnormality signal A5 is confirmed to be correct and the fuse has blown. When the contact of heater 540 is conductive and the contact of overheat detector 70 is conductive, or when the contact of heater 540 is conductive, the contact of electromagnetic contactor 520 is not conductive, and the contact of solid-state relay 530 is conductive, heater 540 is determined to be damaged or burned, thereby confirming fourth abnormality signal A4 is correct.

[0051] Furthermore, the second embodiment may also have an alarm unit 50 and a communication unit 60 like the first embodiment, so as to further activate the alarm unit 50 to generate a warning when the fourth abnormal signal A4 or the fifth abnormal signal A5 is received, or further send the fourth abnormal signal A4 or the fifth abnormal signal A5 through the communication unit 60.

[0052] In summary, the configuration of the trip detector 20, the phase loss detector 30, and the current detector 40, as well as the logic circuit design of the control device 10, can provide an early warning notification when the voltage or current of the equipment is abnormal, and interrupt the operation of the heater 540. This can prevent temperature anomalies from occurring between processes, thereby improving the overall yield and reducing the costs associated with product scrapping.

[0053] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A temperature control detection system for installation in a heating device, wherein the heating device comprises a leakage circuit breaker, an electromagnetic contactor, a solid-state relay, and a heater, wherein: The temperature control detection system includes: a control device electrically connected to the leakage circuit breaker, the electromagnetic contactor, the solid-state relay, and the heater; a trip detector electrically connected to the control device and the leakage circuit breaker, and generating a first abnormality signal to the control device when detecting that the leakage circuit breaker has tripped, so as to terminate the operation of the heater; a phase loss detector electrically connected to the electromagnetic contactor, the solid-state relay, and the control device, and generating a second abnormality signal to the control device to terminate the operation of the heater when a three-phase voltage imbalance is detected; and A current detector is electrically connected to the solid-state relay, the heater, and the control device. When a continuous current surge or a current continuously lower than a threshold is detected, the current detector generates a third abnormal signal to the control device to terminate the operation of the heater.

2. The temperature control detection system according to claim 1, wherein: The control device includes a programmable logic control device.

3. The temperature control detection system according to claim 1, wherein: The invention also comprises an alarm unit. When the control device receives the first abnormality signal, the second abnormality signal, or the third abnormality signal, the control device sends an activation signal to activate the alarm unit.

4. The temperature control detection system according to claim 1, wherein: It also includes a communication unit. When the control device receives the first abnormal signal, the second abnormal signal, or the third abnormal signal, the control device transmits the first abnormal signal, the second abnormal signal, or the third abnormal signal through the communication unit.

5. The temperature control detection system according to claim 1, wherein: The device also includes an overheating detector connected to the heater and the control device. When it is detected that the temperature of the heater is too high, the device generates a fourth abnormality signal to the control device to stop the operation of the heater.

6. The temperature control detection system according to claim 5, characterized in that: The invention also comprises an alarm unit. When the control device receives the first abnormality signal, the second abnormality signal, the third abnormality signal, or the fourth abnormality signal, the control device sends an activation signal to activate the alarm unit.

7. The temperature control detection system according to claim 5, wherein: It also includes a communication unit. When the control device receives the first abnormal signal, the second abnormal signal, the third abnormal signal, or the fourth abnormal signal, the control device transmits the first abnormal signal, the second abnormal signal, the third abnormal signal, or the fourth abnormal signal through the communication unit.

8. The temperature control detection system according to claim 5, wherein: The device further comprises a resistance detector connected to the heater. When detecting that a fuse of the heater has blown, the device generates a fifth abnormality signal to the control device to stop the operation of the heater.

9. The temperature control detection system according to claim 8, wherein: The invention also comprises an alarm unit. When the control device receives the first abnormality signal, the second abnormality signal, the third abnormality signal, the fourth abnormality signal, or the fifth abnormality signal, the control device sends an activation signal to activate the alarm unit.

10. The temperature control detection system according to claim 8, wherein: It also includes a communication unit. When the control device receives the first abnormal signal, the second abnormal signal, the third abnormal signal, the fourth abnormal signal, or the fifth abnormal signal, the control device transmits the first abnormal signal, the second abnormal signal, the third abnormal signal, the fourth abnormal signal, or the fifth abnormal signal through the communication unit.

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