Gas heating equipment control circuit, gas heating device and film coating system

Abstract

The utility model provides a gas heating equipment control circuit, a gas heating device and a film coating system. The gas heating equipment control circuit comprises a power supply; the electric control mechanism comprises an output temperature detection circuit, a heating temperature detection circuit and a pressure detection circuit which are arranged in parallel; the heating mechanism comprises a heater and at least two independent heating circuits connected in parallel, any independent heating circuit is provided with a first heating assembly, a heating temperature probe is arranged at the position of an air inlet pipe of the heater, and an output temperature probe and a pressure detector are arranged in an exhaust pipe. According to the utility model, the specific heating temperature of the heating mechanism, the output temperature of the heated gas and the internal air pressure of the heating mechanism are monitored in real time and can be automatically adjusted, so that not only is the heating quality monitoring of the compressed gas improved, but also the safety of the compressed gas in the heating process is ensured. Compared with conventional compressed gas treatment equipment, the compressed gas treatment equipment has the advantages of being high in automation degree, high in response speed, stable in heating quality, high in use flexibility degree and the like.

Description

Technical Field

[0001] This utility model relates to the field of control circuit technology, specifically to a control circuit for a gas heating device, a gas heating device, and a coating system. Background Technology

[0002] In modern industrial production, compressed air coating technology is widely used in many fields such as packaging, electronics, and automotive parts manufacturing. For example, in the packaging industry, compressed air is used to tightly adhere plastic film to the surface of products, serving to prevent moisture and dust, protect the product's appearance, and extend its shelf life. In the electronics field, coating electronic components can enhance their insulation properties, resist external environmental interference, and ensure the stable operation of electronic equipment.

[0003] However, a common and thorny problem has gradually emerged during the compressed air lamination process. When the ambient temperature is low or the compressed air itself is insufficient, the laminated product is prone to edge curling. Taking food packaging as an example, edge curling compromises the packaging's seal, allowing air and moisture to easily penetrate, causing the food to become damp and spoil, significantly shortening its shelf life and resulting in economic losses. In the lamination of electronic components, edge curling may cause electronic components to come into contact with the outside environment, increasing the risk of short circuits and affecting the quality and reliability of electronic products. According to incomplete statistics, in the cold winter months, edge curling caused by low compressed air temperature results in a defect rate as high as 15%-20% for some companies, seriously affecting production efficiency and corporate economic benefits.

[0004] To address this issue, the industry commonly employs heating compressed air. However, existing heating technologies exhibit serious shortcomings in practical applications, making precise temperature control difficult. Common heating devices, such as resistance wire heating and heat exchanger heating, suffer from delayed response during temperature regulation due to the thermal inertia of the heating elements. When the compressed air temperature needs to be increased, the heating device cannot promptly raise the temperature to the set value; conversely, when the temperature approaches the set value, it cannot quickly stop heating, easily leading to overheating and overshoot. This not only wastes energy but may also damage the coated products or equipment due to excessively high temperatures. For example, in the coating process of some temperature-sensitive high-end electronic products, even small temperature fluctuations can cause product performance degradation or even scrapping. Furthermore, most existing temperature control systems rely on simple temperature sensors and control algorithms, failing to adjust the heating power accurately and in real-time based on multiple factors such as compressed air flow rate and ambient temperature. This makes it difficult to stabilize the heating temperature within the ideal range, severely hindering the further development and application of compressed air coating technology. Summary of the Invention

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the problem of the difficulty in accurately adjusting the temperature of compressed air in the prior art, and to provide a gas heating equipment control circuit, a gas heating device and a coating system.

[0006] To solve the above-mentioned technical problems, this utility model provides a control circuit for a gas heating device, comprising: a power supply; an electronic control mechanism connected to the power supply, which includes an output temperature detection circuit, a heating temperature detection circuit, and a pressure detection circuit arranged in parallel; and a heating mechanism including a heater and at least two independent heating circuits, wherein the at least two independent heating circuits are arranged in parallel inside the heater and are all connected to the power supply, and each of the independent heating circuits is provided with a first heating component. The heater is provided with an inlet pipe and an exhaust pipe at its two ends, respectively. A heating temperature probe connected to the heating temperature detection circuit is provided at the inlet pipe, and an output temperature probe connected to the output temperature detection circuit and a pressure detector connected to the pressure detection circuit are provided inside the exhaust pipe.

[0007] In one embodiment of this utility model, the independent heating circuit includes an independent switch and a first heating indicator light. The independent switch is connected in series with the first heating component, and the first heating indicator light is connected in parallel with the first heating component.

[0008] In one embodiment of the present invention, the heating mechanism further includes a temperature regulating circuit, which includes a main switch and two second heating components. The main switch and the two second heating components are connected in series, and the two second heating components are connected in parallel.

[0009] In one embodiment of the present invention, the temperature regulation circuit further includes two branch switches and two second heating indicator lights. The two branches are connected in series with the two second heating components, and the two second heating indicator lights are connected in parallel with the two second heating components.

[0010] In one embodiment of the present invention, both the first heating component and the second heating component include multiple switching switches and multiple heating tubes, wherein the multiple heating tubes are connected in parallel with each other, and the multiple switching switches are connected in series with the multiple heating tubes.

[0011] In one embodiment of this utility model, the electronic control mechanism further includes an over-temperature alarm circuit and a low-pressure alarm circuit. The over-temperature alarm circuit is connected to the output temperature probe, and the low-pressure alarm circuit is connected to the pressure detector.

[0012] In one embodiment of the present invention, the electronic control mechanism further includes a power indicator circuit, which is connected in series with the power supply and is provided with a power indicator light.

[0013] This utility model also provides a gas heating device, which includes the above-mentioned gas heating equipment control circuit, housing and transmission lines. The electrical control mechanism in the gas heating equipment control circuit is disposed inside the housing. One end of the plurality of transmission lines is connected to the electrical control mechanism, and the other end passes through the housing and is connected to the heating mechanism.

[0014] In one embodiment of this utility model, the box includes a door, a latch, and multiple cable trays. An opening is provided on one side of the box. The door is rotatably connected to the opening and is connected to the box through the latch. The multiple cable trays are respectively connected to the internal and external environments of the box. Multiple transmission lines are respectively passed out from the inside of the box through the multiple cable trays. The side wall of the box is also provided with heat dissipation louvers.

[0015] This utility model also provides a coating system, which includes the gas heating device control circuit described above.

[0016] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0017] The gas heating equipment control circuit, gas heating device, and coating system described in this utility model monitor the specific heating temperature of the heating mechanism, the output temperature of the heated gas, and the internal gas pressure of the heating mechanism in real time through an electronic control mechanism. Furthermore, it can automatically adjust according to actual usage requirements, thereby ensuring the stability and controllability of the heating mechanism during the heating process. This not only improves the monitoring of the heating quality of compressed gas but also ensures its safety during the heating process. Compared with conventional compressed gas processing equipment at present, this application has advantages such as high automation, fast feedback response speed, stable heating quality, high flexibility of use, and wide applicability, providing a new approach to compressed gas processing technology. Attached Figure Description

[0018] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the signal connection of the control circuit of the gas heating device in a preferred embodiment of this utility model;

[0020] Figure 2 yes Figure 1 The circuit diagram of the control circuit for the gas heating device shown is shown.

[0021] Figure 3 yes Figure 1 The diagram shows the internal circuit of the heating mechanism in the control circuit of the gas heating device.

[0022] Figure 4 This is a schematic diagram of the structure of the housing in another embodiment of the gas heating device of this utility model;

[0023] Figure 5 yes Figure 4 The diagram shows the structure of the box from another perspective.

[0024] Explanation of reference numerals in the accompanying drawings: 100, Electrical control mechanism; 110, Power indicator circuit; 111, Power indicator light; 120, Output temperature detection circuit; 130, Heating temperature detection circuit; 140, Pressure detection circuit; 150, Over-temperature alarm circuit; 160, Low-pressure alarm circuit; 200, Heating mechanism; 210, Independent heating circuit; 211, First heating component; 212, First heating indicator light; 220, Temperature adjustment circuit; 221, Second heating component; 222, Second heating indicator light; 230, Heating temperature probe; 240, Output temperature probe; 250, Pressure detector; 260, Switch; 270, Heating element; 300, Housing; 310, Door; 320, Lock; 330, Wiring trough; 340, Heat dissipation louvers. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention. Example 1

[0026] See Figure 1 and Figure 2As shown, this application provides a gas heating device control circuit for heating compressed gas to be coated, thereby improving its coating effect. Specifically, it includes: a power supply; an electronic control mechanism 100 connected to the power supply, comprising an output temperature detection circuit 120, a heating temperature detection circuit 130, and a pressure detection circuit 140 connected in parallel; and a heating mechanism 200 including a heater and at least two independent heating circuits 210 connected in parallel inside the heater and connected to the power supply. Each independent heating circuit 210 is equipped with a first heating element 211. The heater has an inlet pipe and an outlet pipe at both ends. The inlet pipe has a heating temperature probe 230 connected to the heating temperature detection circuit 130, and the outlet pipe has an output temperature probe 240 connected to the output temperature detection circuit 120 and a pressure detector 250 connected to the pressure detection circuit 140.

[0027] The power supply provides power to the electrical control mechanism 100 and the heating mechanism 200, with a preferred rated voltage of 24V. The heating mechanism 200 heats the compressed air input into it via its internal heater. The electrical control mechanism 100 monitors the internal temperature of the heating mechanism 200 and the output temperature of the compressed air during the heating process, thereby achieving real-time monitoring of the compressed air heating quality. Based on this, the gas heating equipment control circuit in this embodiment monitors the specific heating temperature of the heating mechanism 200, the output temperature of the heated gas, and the internal gas pressure of the heating mechanism 200 in real time through the electrical control mechanism 100, and can automatically adjust according to actual usage requirements. This ensures the stability and controllability of the heating mechanism 200 during the heating process, improving both the monitoring of compressed gas heating quality and ensuring safety during the heating process. Compared to conventional compressed gas processing equipment, this application offers advantages such as high automation, fast feedback response, stable heating quality, high flexibility, and wide applicability, providing a new approach to compressed gas processing technology.

[0028] In this embodiment, the electronic control mechanism 100 further includes a power indicator circuit 110, which is connected in series with the power supply and has a power indicator light 111 to indicate whether the power supply is in normal operating condition. Further, the electronic control mechanism 100 in this embodiment also includes an over-temperature alarm circuit 150 and a low-pressure alarm circuit 160. The over-temperature alarm circuit 150 is connected to the output temperature probe 240, and the low-pressure alarm circuit 160 is connected to the pressure detector 250, thus providing dual protection for heating quality and safety. Further, in this embodiment, the output temperature detection circuit 120 includes an output temperature instrument, the heating temperature detection circuit 130 includes a heating temperature instrument, and the pressure detection circuit 140 includes a pressure display instrument, thereby providing real-time feedback on various monitoring parameters.

[0029] See Figure 1 and Figure 2 As shown, in this embodiment, the heating mechanism 200 has an inlet pipe and an exhaust pipe on opposite sides along its length. The inlet pipe is connected to a compressed gas supply device, and the exhaust pipe is connected to a high-temperature gas storage device. Further, the heating mechanism 200 has multiple heating temperature probes 230 extending into the heating space near the inlet pipe. These probes are used to detect the internal ambient temperature of the heating mechanism 200 and the initial temperature of the input compressed air. The exhaust pipe is connected to an output temperature probe 240 and a pressure detector 250 extending into it. These probes are used to detect the output compressed air temperature and the internal air pressure changes of the heating mechanism 200, respectively. In this embodiment, the heating quality of the compressed gas is indirectly fed back through the difference between the output temperature probe 240 and the heating temperature probes 230. This allows for adaptive adjustment of the actual heating process according to actual usage requirements, ensuring that the heating quality of the compressed air meets the coating standards.

[0030] In this embodiment, two independent heating circuits 210 are provided, each including an independent switch and a first heating indicator light 212. The independent switch is connected in series with the first heating component 211, and the first heating indicator light 212 is connected in parallel with the first heating component 211. In this embodiment, the two independent heating circuits 210 can be turned on and off respectively by their respective independent switch controllers. Therefore, when a wide range of temperature adjustment is required, a rapid response to the internal temperature of the heating mechanism 200 can be achieved by adjusting the independent heating circuits 210. The first heating indicator light 212 can be used to determine whether the corresponding independent heating circuit 210 is in normal working condition.

[0031] In this embodiment, the heating mechanism 200 further includes a temperature regulation circuit 220. The temperature regulation circuit 220 includes a main switch and two second heating components 221. The main switch and the two second heating components 221 are connected in series, and the two second heating components 221 are connected in parallel. Specifically, the temperature regulation circuit 220 also includes two branch switches and two second heating indicator lights 222. The two branch switches are connected in series with the two second heating components 221, and the two second heating indicator lights 222 are connected in parallel with the two second heating components 221 respectively. Based on this connection configuration, the temperature regulation circuit 220 in this embodiment can achieve precise temperature regulation when a small-range temperature adjustment is required, thereby improving the accuracy and flexibility of the control circuit of this gas heating equipment. Furthermore, the electronic control mechanism 100 can automatically adjust the internal temperature of the heating mechanism 200 through the independent heating circuit 210 and the temperature regulation circuit 220, thereby achieving the purpose of self-regulation of the compressed air temperature.

[0032] See Figure 3 As shown, in this embodiment, both the first heating component 211 and the second heating component 221 include multiple switching switches 260 and multiple heating tubes 270. The multiple heating tubes 270 are connected in parallel, and the multiple switching switches 260 are connected in series with the multiple heating tubes 270. The connection relationship between different heating components can be adjusted by adjusting the switching switches 260. In different embodiments, the specific number of the first heating component 211 and the second heating component 221, as well as the specific number of heating tubes 270 in any heating component, can be adaptively adjusted according to actual usage requirements. This utility model does not impose specific limitations in this regard. Example 2

[0033] See Figure 4 and Figure 5 As shown, this embodiment provides a gas heating device, which includes the gas heating equipment control circuit described in Embodiment 1, a housing 300, and transmission lines. The electrical control mechanism 100 in the gas heating equipment control circuit is disposed inside the housing 300. One end of each of the multiple transmission lines is connected to the electrical control mechanism 100, and the other end passes through the housing 300 and connects to the heating mechanism 200. Specifically, the housing 300 in this embodiment includes a door 310, a latch 320, and multiple wire slots 330. An opening is provided on one side of the housing 300. The door 310 is rotatably connected to the opening and is connected to the housing 300 through the latch 320. The multiple wire slots 330 are respectively connected to the internal and external environments of the housing 300. The multiple transmission lines pass through the multiple wire slots 330 from the inside of the housing 300. The side wall of the housing 300 is also provided with heat dissipation louvers 340. Example 3

[0034] This embodiment provides a coating system, which includes the gas heating device control circuit described in Embodiment 1.

[0035] In summary, the gas heating equipment control circuit, gas heating device, and coating system described in this utility model, through the electronic control mechanism 100, monitor the specific heating temperature of the heating mechanism 200, the output temperature of the heated gas, and the internal gas pressure of the heating mechanism 200 in real time, and can automatically adjust according to actual usage requirements. This ensures the stability and controllability of the heating mechanism 200 during the heating process, improving both the quality monitoring of compressed gas heating and ensuring safety during the heating process. Compared to conventional compressed gas processing equipment at present, this application has advantages such as high automation, fast feedback response, stable heating quality, high flexibility, and wide applicability, providing a new approach to compressed gas processing technology.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A control circuit for a gas heating device, characterized in that: include: power supply; An electronic control mechanism, connected to the power supply, includes an output temperature detection circuit, a heating temperature detection circuit, and a pressure detection circuit arranged in parallel with each other. The heating mechanism includes a heater and at least two independent heating circuits. The at least two independent heating circuits are arranged in parallel inside the heater and are both connected to the power supply. Each independent heating circuit is provided with a first heating component. The heater is provided with an air inlet pipe and an air outlet pipe at its two ends. The air inlet pipe is provided with a heating temperature probe connected to the heating temperature detection circuit. The air outlet pipe is provided with an output temperature probe connected to the output temperature detection circuit and a pressure detector connected to the pressure detection circuit.

2. The control circuit for the gas heating device according to claim 1, characterized in that: The independent heating circuit includes an independent switch and a first heating indicator light. The independent switch is connected in series with the first heating component, and the first heating indicator light is connected in parallel with the first heating component.

3. The control circuit for the gas heating device according to claim 1, characterized in that: The heating mechanism also includes a temperature regulation circuit, which includes a main switch and two second heating components. The main switch and the two second heating components are connected in series, and the two second heating components are connected in parallel.

4. The control circuit for the gas heating device according to claim 3, characterized in that: The temperature regulation circuit also includes two branch switches and two second heating indicator lights. The two branches are connected in series with the two second heating components, and the two second heating indicator lights are connected in parallel with the two second heating components.

5. The control circuit for the gas heating device according to claim 3, characterized in that: Both the first heating component and the second heating component include multiple switching switches and multiple heating tubes. The multiple heating tubes are connected in parallel with each other, and the multiple switching switches are connected in series with the multiple heating tubes.

6. The control circuit for the gas heating device according to claim 1, characterized in that: The electronic control mechanism also includes an over-temperature alarm circuit and a low-pressure alarm circuit. The over-temperature alarm circuit is connected to the output temperature probe, and the low-pressure alarm circuit is connected to the pressure detector.

7. The control circuit for the gas heating device according to claim 1, characterized in that: The electronic control mechanism also includes a power indicator circuit, which is connected in series with the power supply and has a power indicator light on it.

8. A gas heating device, characterized in that: The device includes a gas heating equipment control circuit, a housing, and transmission lines as described in any one of claims 1 to 7. The electrical control mechanism in the gas heating equipment control circuit is located inside the housing. One end of each of the transmission lines is connected to the electrical control mechanism, and the other end extends out of the housing and connects to the heating mechanism.

9. The gas heating device according to claim 8, characterized in that: The enclosure includes a door, a latch, and multiple cable trays. An opening is provided on one side of the enclosure. The door is rotatably connected to the opening and is connected to the enclosure via the latch. The multiple cable trays are respectively connected to the internal and external environments of the enclosure. Multiple transmission lines are respectively passed out from the inside of the enclosure through the multiple cable trays. The side wall of the enclosure is also provided with heat dissipation louvers.

10. A coating system, characterized in that: Includes the gas heating device control circuit as described in any one of claims 1 to 7.

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