CN207529245U - The control circuit and heated oven of a kind of heating unit - Google Patents

Abstract

The utility model discloses the control circuit and heated oven of a kind of heating unit, the control circuit of the heating unit includes：First heater, secondary heating mechanism, solid-state relay, controlling brancher, wherein, first heater and solid-state relay are arranged in series, and the first heater and solid-state relay after series connection are arranged in parallel with secondary heating mechanism；And controlling brancher includes：Temperature controller, temperature controller and secondary heating mechanism are arranged in parallel.The utility model extends the service life of heating unit, reduces dash current, hoisting power factor reduces energy consumption operation energy consumption and maintenance cost through the above technical solutions, can effectively reduce in babinet that local temperature fluctuations range is big.

Description

A control circuit of a heating device and a heating oven

technical field

The utility model relates to the technical field of heating devices, in particular to a control circuit of a heating device and a heating oven.

Background technique

With the development of modern society, mobile devices such as mobile phones, video cameras, notebook computers, portable DVDs and digital cameras have been used more and more widely. High-energy-density batteries have become a future development trend, and at the same time, the requirements for production processes are getting higher and higher. In this environment, the PCL process is produced, and when the PCL process is applied, the gummed paper has high temperature requirements, and early foaming or delayed foaming will lead to defective products and bring safety hazards.

At present, the heating devices in the industry are all heated by high-power heating wires, oil heating tubes, PTC (positive temperature coefficient, thermistor) heating devices, etc., and the control adopts solid-state relay on-off mode to control multiple groups of simultaneous heating. When the heating devices work together When heating, the temperature rises rapidly, and when the heating is stopped, it drops rapidly, so there is a defect of large temperature fluctuations. In addition, when the current fluctuation of the overall circuit is large, the impact current is as high as 500A, and the power factor is greatly reduced. It is also easy to cause the problem of energy waste. In addition, because the life of the PTC heating device is related to the number of power-on times, it is also easy to cause the problem of shortening the life of the heating device and increasing the maintenance cost of the company.

Aiming at the problems in the related technologies, no effective solution has been proposed yet.

Utility model content

Aiming at the problems in the related art, the utility model proposes a control circuit of the heating device and a heating oven, which can effectively solve the large temperature fluctuation range and the large impact current caused by the on-off of the P heating device in the prior art. Technical problems with frequent on-off times.

The technical scheme of the utility model is achieved in that:

According to one aspect of the present invention, a control circuit of a heating device is provided.

The control circuit of the heating device includes: a first heating device, a second heating device, a solid-state relay, and a control branch, wherein the first heating device and the solid-state relay are arranged in series, and the first heating device and the solid-state relay connected in series are connected to the second heating device. The heating device is arranged in parallel; and the control branch includes: a thermostat, and the thermostat and the second heating device are arranged in parallel.

According to an embodiment of the present invention, the control circuit further includes: a heating contactor, and the heating contactor and the second heating device are arranged in series.

According to an embodiment of the present invention, the control circuit further includes: a circuit breaker, a main contactor, and a fan, and the circuit breaker and the main contactor are arranged in series, and the main contactor and the fan are arranged in series.

According to an embodiment of the present invention, the main contactor is further connected in series with a solid state relay and a first heating device.

According to an embodiment of the present invention, the main contactor is further connected in series with a heating contactor and a second heating device in series.

According to an embodiment of the present invention, the control circuit is arranged in the box body, and the first start button and the second start button are arranged on the box body.

According to an embodiment of the present invention, the control branch circuit includes: the first start button and the coil of the main contactor are arranged in series, and the first start button is further connected in series with the second start button, the coil of the heating contactor, and the first The start button is further connected in series with a second start button and a temperature controller in sequence.

According to an embodiment of the present invention, the control circuit further includes: a frequency converter, and the frequency converter is arranged between the main contactor and the fan.

According to an embodiment of the present utility model, a plurality of heating sheets are arranged in the first heating device.

According to an embodiment of the present invention, a plurality of heating sheets are arranged in the second heating device.

According to another aspect of the present utility model, a heating oven is provided.

The heating oven includes: a control circuit of any one of the above-mentioned heating devices.

The beneficial technical effects of the utility model are:

The utility model is arranged in series through the first heating device and the solid state relay, and the first heating device and the solid state relay connected in series are arranged in parallel with the second heating device, and the control branch includes: a temperature controller, a temperature controller and a second heating device Parallel setting can effectively reduce the local temperature fluctuation range in the box, prolong the life of the heating device, reduce the impact current, improve the power factor, reduce energy consumption, operation energy consumption and maintenance costs.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only the present invention. For some embodiments of the present invention, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic diagram of a control circuit of a heating device according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

According to an embodiment of the utility model, a control circuit of a heating device is provided.

As shown in Figure 1, the control circuit of the heating device according to the embodiment of the utility model includes: a first heating device 6, a second heating device 8, a solid state relay 5, and a control branch circuit, wherein the first heating device 6 and the solid state relay 5 are arranged in series, and the first heating device 6 and the solid state relay 5 connected in series are arranged in parallel with the second heating device 8;

By means of the above-mentioned technical solution of the utility model, the first heating device and the solid-state relay are arranged in series, and the first heating device and the solid-state relay connected in series are arranged in parallel with the second heating device, and the control branch includes: a thermostat, a temperature The controller and the second heating device are set in parallel, which can effectively reduce the local temperature fluctuation range in the cabinet, prolong the life of the heating device, reduce the inrush current, improve the power factor, and reduce energy consumption, operation energy consumption and maintenance costs.

In order to better describe the technical solution of the present utility model, a detailed description will be given below through specific examples.

As shown in Figure 1, the control circuit of the heating device includes: power supply, circuit breaker 1, main contactor 2, frequency converter 3, fan 4, solid state relay 5, first heating device 6, heating contactor 7, second heating Device 8, control branch, etc., wherein both the main contactor 2 and the heating contactor 7 are contactors. In addition, the first heating device 6 and the second heating device 8 can be selected according to actual needs, for example, according to an embodiment of the present utility model, the first heating device 6 and the second heating device 8 are both PTC heating devices , the utility model does not limit this. Meanwhile, as shown in FIG. 1 , the power supply is a three-phase power supply, that is, the power supply includes: phase line L1 , phase line L2 , and phase line L3 , and the power supply also includes: neutral line N and protection line PE. In addition, one side of the three circuit breakers 1 is electrically connected to the phase line L1, phase line L2 and phase line L3 respectively, and the other sides of the above three circuit breakers 1 are respectively connected to one end of the three main contactors 2, and at the same time , those skilled in the art should understand that here, for the convenience of description, the normally open contact of the main contactor 2 is described as the main contactor 2, but in fact, the other side of the above-mentioned three circuit breakers 1 is connected with the three main Normally open contact connection of contactor 2. At the same time, the other sides of the three main contactors 2 are sequentially connected with a frequency converter 3 and a fan 4, one side of the fan 4 is connected to the frequency converter 3, and the other side of the fan 4 is connected to the protection line PE. Therefore, the rotation frequency of the blower fan 4 is set by the frequency converter 3 , and the circulation of the hot air in the box can be realized.

In addition, referring to Fig. 1, the other side of the above-mentioned three main contactors 2 is also connected in series with a solid state relay 5 and a first heating device 6, one end of the first heating device 6 is connected to the solid state relay 5, and the first heating device 6 is connected to the solid state relay 5. The other end of a heating device 6 is connected to the neutral line N. At the same time, the other sides of the above three main contactors 2 are connected in series with a heating contactor 7 and a second heating device 8 respectively. One end is connected to the heating contactor 7, and the other end of the second heating device 8 is connected to the neutral line N. In addition, a plurality of heating sheets are arranged in the first heating device 6 and the second heating device 8, so that by setting appropriately The number of heating sheets in the first heating device 6 and the second heating device 8 improves the temperature raising efficiency in the box.

In addition, referring to Fig. 1, the control branch includes: a first start button 9, a second start button 10, a thermostat 13, etc., wherein the control branch can be arranged in the box, the first start button 9 and the second start button Two start buttons 10 can be arranged on the surface of the casing, and at the same time, the phase line L3 is connected with the first start button 9, the first start button 9 and the coil 11 of the main contactor 2 are arranged in series, and the first start button 9 also The second start button 10, the coil 12 of the heating contactor 7 are serially connected in sequence, and the first start button 9 is also connected in series with the second start button 10, the thermostat 13, the coil 11 of the main contactor 2, the heating contactor The coil 12 of the device 7 and the thermostat 13 are also connected to the neutral line N.

In addition, it can be understood that although FIG. 1 only shows the first heating device 6 and the second heating device 8, those skilled in the art should understand that a third heating device can also be provided according to actual needs, and the third heating device The control part of the heating device is similar to the control part of the first heating device 6, which is not limited in the present invention.

In addition, the control flow of the control circuit of the heating device is as follows: first, the first start button 9 is turned on, so that the main contactor 2 is engaged, so that the fan 4 can run at a given frequency, and then the second start button 10 is turned on, so that The heating contactor 7 is closed, and the second heating device 8 is energized to generate heat. When the temperature in the drying tunnel is lower than the set temperature, the temperature controller 13 will output a high level so that the solid state relay 5 is turned on, and then the first heating device 8 is turned on. The device 6 is energized to generate heat, and when the first heating device 6 and the second heating device 8 are heated simultaneously, the temperature in the box rises rapidly. Subsequently, after the temperature in the box reaches the set temperature, the output of the thermostat 13 is disconnected, and the solid state relay 5 is disconnected, so that the first heating device 6 stops heating, and the second heating device 8 continues to heat and keep warm. The ratio of the heating plates in the first heating device 6 and the second heating device 8 can greatly reduce the on-off frequency of the heating wire, reduce the local temperature fluctuation in the oven, prolong the life of the PTC heating package, reduce the impact current, improve the power factor, and reduce energy consumption. Operating energy consumption and maintenance costs, etc.

According to an embodiment of the present invention, there is also provided a heating oven, which includes: a control circuit of any one of the above-mentioned heating devices.

In summary, with the help of the above technical solution of the utility model, the first heating device and the solid-state relay are arranged in series, and the first heating device and the solid-state relay connected in series are arranged in parallel with the second heating device, and the control branch includes: The temperature controller, the temperature controller and the second heating device are set in parallel, which can effectively reduce the local temperature fluctuation range in the box, prolong the life of the heating device, reduce the inrush current, improve the power factor, and reduce energy consumption. Operation energy consumption and maintenance cost.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (11)

1. a kind of control circuit of heating unit, which is characterized in that including：First heater, secondary heating mechanism, solid-state after Electric appliance, controlling brancher, wherein, the first heater and the solid-state relay are arranged in series, and described first after series connection Heating unit and the solid-state relay are arranged in parallel with the secondary heating mechanism；And

The controlling brancher includes：Temperature controller, the temperature controller and the secondary heating mechanism are arranged in parallel.

2. control circuit according to claim 1, which is characterized in that the control circuit further includes：Also contacts device, institute It states also contacts device and the secondary heating mechanism is arranged in series.

3. control circuit according to claim 2, which is characterized in that the control circuit further includes：

Breaker, main contactor, wind turbine, the breaker have been sequentially connected in series the main contactor, the wind turbine.

4. control circuit according to claim 3, which is characterized in that the main contactor has also been sequentially connected in series the solid-state Relay, the first heater.

5. control circuit according to claim 3, which is characterized in that the main contactor has also been sequentially connected in series the heating Contactor, the secondary heating mechanism.

6. control circuit according to claim 3, which is characterized in that the control circuit is arranged in babinet, Yi Jisuo Babinet is stated equipped with the first start button and the second start button.

7. control circuit according to claim 6, which is characterized in that the controlling brancher includes：First startup is pressed The coil of button and the main contactor is arranged in series and first start button be also sequentially connected in series it is described second start by Button, the coil of the also contacts device and first start button have also been sequentially connected in series second start button, described Temperature controller.

8. control circuit according to claim 3, which is characterized in that the control circuit further includes：

Frequency converter, the frequency converter are arranged between the main contactor and the wind turbine.

9. control circuit according to claim 1, which is characterized in that multiple fevers are equipped in the first heater Piece.

10. control circuit according to claim 1, which is characterized in that multiple fevers are equipped in the secondary heating mechanism Piece.

11. a kind of heated oven, which is characterized in that the heated oven includes claim 1-10 any one of them heating dress The control circuit put.