CN108415479A - A kind of automatically controlled hot bellows and its application method - Google Patents

Abstract

The invention discloses a kind of automatically controlled hot bellows and its application method, hot bellows include babinet and wind turbine, are provided with cold wind import below babinet, top is provided with hot-blast outlet, wind turbine is connected at cold wind import；Multiple stainless steel separators parallel to each other are vertically disposed in babinet, multiple stainless steel separators make cabinets cavity form " Z " font gas heating path；Hot bellows further include control circuit, the control circuit includes power input, power module, controller, temperature sensor and heater circuit, power input, power module and controller are sequentially connected, and temperature sensor and heater circuit are electrically connected with the controller；Heater circuit includes electrical heating elements, and electrical heating elements are mounted in the heating channel between adjacent stainless steel separator；It is at least one set of in heater circuit to be provided with the bidirectional triode thyristor controlling brancher being electrically connected with the controller；Temperature sensor is mounted at the hot-blast outlet.

Description

An electric control hot air box and using method thereof

technical field

The invention relates to the technical field of heating equipment, in particular to an electric-controlled hot air box and a method for using the same.

Background technique

The principle of the dryer is to heat the air in the environment through electricity, diesel power, wind power, flammable material power, etc., so that the air reaches an appropriate temperature for dehumidification.

The electric dryer achieves the purpose of dehumidification through electricity. The electric dryer is generally equipped with an air heating box. The existing air heating box is provided with a cavity. Generally, an electric heating element is directly installed in the cavity. By heating the electric heating element, the The cold air flowing into the cavity is heated and turned into hot air before being used. Because there is no other equipment in the cavity except the electric heating element, the cold air has no resistance to move in the cavity of the equipment, the residence time is short, and the air cannot be fully heated, which will cause the equipment to have the defects of low heating rate and high power consumption. .

Contents of the invention

The object of the present invention is to provide an electric-controlled hot air box and its use method, which are used to solve the problems of low heating rate of cold air in the existing hot air box and high power consumption for electric drying.

To achieve the above object, the technical solution of the present invention is:

An electronically controlled hot air box, the hot air box includes a hollow structure box and a fan, the cross section of the box is square or circular, the bottom of the box is provided with a cold air inlet, and the top is provided with a hot air outlet. A fan is connected to the inlet of the cold air; a plurality of stainless steel partitions parallel to each other are arranged in the box along the vertical direction, and the multiple stainless steel partitions make the inner cavity of the box form a "Z"-shaped gas heating channel, and the stainless steel partitions The number is greater than or equal to two and less than or equal to thirty; the hot air box also includes a control circuit, the control circuit includes a power input terminal, a power module, a controller, a temperature sensor and a heating circuit, a power input terminal, a power module and a control circuit The temperature sensor and the heating circuit are electrically connected to the controller; the heating circuit includes an electric heating element, and the electric heating element is installed in the heating channel between adjacent stainless steel partitions; the heating circuit is provided with at least two groups, at least one of which is provided with a bidirectional thyristor control branch, and the bidirectional thyristor control branch is electrically connected to the controller; the temperature sensor is installed at the outlet of the hot air.

Through the above technical scheme, the air flowing into the electric heating air box rises slowly in a "Z" shape under the heat conduction of the electric heating element, and the cold air is retained and fully heated under the resistance of the stainless steel partition, so that It improves the heating efficiency and reduces the power consumption; the temperature of the air in the box is maintained at the set value through the control circuit, and the temperature is intelligently controlled through the controller.

In one embodiment, the number of the stainless steel partitions is seven, and the heating circuits are provided in eight groups; among them, three groups of heating circuits are provided with thyristor control branches.

Through the above-mentioned technical scheme, the air in the box is fully heated, and three sets of heating circuits including thyristor control branches are provided so that the power adjustment range of the device is wide and the temperature control is more precise.

In one embodiment, the thyristor control branch includes an optocoupler and a thyristor, and the controller, optocoupler, and thyristor are connected in sequence.

An optocoupler is a device that transmits electrical signals through light as a medium. Usually, the light emitter (infrared light-emitting diode LED) and the light receiver (photosensitive semiconductor tube) are packaged in the same package. When the input terminal is powered on, the light emitter emits light, and the light receiver generates photocurrent after receiving the light, which flows out from the output terminal, thus realizing the "electricity-optical-electricity" conversion. The optocoupler, which uses light as a medium to couple the input signal to the output, has the advantages of small size, long life, no contact, strong anti-interference ability, insulation between output and input, and one-way signal transmission. widely used in circuits.

SCR is a high-power electrical component, also known as thyristor. It has the advantages of small size, high efficiency and long life. In the automatic control system, it can be used as a high-power drive device to control high-power equipment with low-power controls, and it can be used as a non-contact switch to quickly connect or cut off the circuit.

The optocoupler thyristor is actually a circuit composed of optocoupler + thyristor, which acts like a relay. When the optocoupler diode has current flowing, the thyristor conducts.

In one embodiment, each set of heating circuits includes three electric heating elements, and the three electric heating elements are connected in delta.

Through the above technical solution, the connection method of connecting the three-phase loads between every two phase lines of the three-phase power supply is called delta connection, and this connection method helps to increase the heating power of the electric heating element.

In one embodiment, the electric heating element is an "M" type heating tube.

Through the above technical proposal, it is helpful for the electric heating element to dissipate heat evenly between the partitions, so that the air flowing through the partitions can be evenly and fully heated.

In one embodiment, the control circuit further includes an indicator light, a display screen, a buzzer and control buttons, and the indicator light, display screen, buzzer and control buttons are all electrically connected to the controller.

Through the above technical solution, the real-time monitoring and operation of the temperature of the gas in the box can be realized.

In one embodiment, the hot air box further includes an electric box, the electric box is electrically connected to the box body through wires, and an indicator light, a display screen, a buzzer and control buttons are arranged on the electric box.

Through the above technical solution, the real-time monitoring and operation of the temperature of the gas in the box can be better realized.

In one embodiment, the number of the stainless steel separators is greater than or equal to two and less than or equal to thirty.

Through the above technical scheme, different numbers of partitions are selected according to different actual needs.

In one embodiment, the box is provided with a stainless steel liner, and the stainless steel separator and the electric heating element are installed in the liner.

Through the above technical scheme, the thermal insulation effect of the box body is ensured.

A method of using an electric control hot air box, the method of using comprises the following steps:

Set the temperature of the box, turn on the heating circuit, the air enters the box from the bottom of the box through the cold air inlet under the action of the fan, and then moves to the top of the box, and the air is blocked by the stainless steel partition along the "Z" shape. The type gas heating channel rises slowly, and the air is fully heated under the heat conduction of the electric heating element;

The temperature of the air in the box is collected by the temperature sensor. When the temperature in the box collected by the temperature sensor deviates from the set temperature, the temperature sensor feeds back the temperature value to the controller, and the controller is controlled by the bidirectional thyristor control branch. The electric heating element is turned on and off to keep the air in the box at a constant temperature, and the air is finally discharged through the hot air outlet and enters the next process.

The present invention has the following advantages:

An electric control hot air box of the present invention adopts a full stainless steel liner, and additional stainless steel interlayers are added layer by layer, so that the air entering the box is stranded and fully heated. According to the requirements of the outlet temperature, the number of interlayers can vary. Minimum two floors, maximum thirty floors. The equipment has high thermal efficiency, low power consumption, convenient maintenance, reasonable structure, zero air emission, environmental protection and energy saving.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention.

Fig. 2 is a circuit block diagram of the control circuit of the present invention.

Fig. 3 is a schematic circuit diagram of the heating circuit of the present invention.

Detailed ways

The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

Example 1

An electric control hot air box as shown in Figure 1 includes a box body 1 and a blower fan 2 with a hollow structure, a box cover 8 is movable on the box body 1, a cold air inlet 101 is arranged below the box body 1, and a top is provided There is a hot air outlet 102, and the cold air inlet 101 is connected with a fan 2, and the ambient air passes through the cold air inlet 101 and enters the box body 1 under the action of the fan 2, and is heated and becomes hot air to be discharged through the hot air outlet 102; The body 1 is provided with a stainless steel liner, and an insulating interlayer is arranged between the liner and the box body 1. In the stainless steel liner, there are seven stainless steel partitions 3 parallel to each other along the vertical direction of the box body 1. Seven stainless steel partitions The partition 3 forms a "Z"-shaped gas heating channel in the inner cavity of the box body 1; It is retained and fully heated, which improves the heating efficiency and reduces power consumption;

Described hot air box also comprises control circuit 4, and as shown in Figure 2, described control circuit 4 comprises power input terminal 41, power supply module 42, controller 43, temperature sensor 44 and eight groups of heating circuits, and power supply module 42 outputs stable voltage , supply power for the controller 43, the heating circuit, etc., use the combination of the heating circuits to adjust the heating power in the box 1 according to actual needs, the power input terminal 41, the power module 42 and the controller 43 are connected in sequence, and the power input terminal 41 A power switch is arranged between the power module 42, and the temperature sensor 44 and the heating circuit are electrically connected to the controller 43; the heating circuit includes an electric heating element 5, and the electric heating element 5 is installed between adjacent stainless steel partitions In the heating channel; in the heating circuit, three groups are respectively provided with bidirectional thyristor control branch 6, and the bidirectional thyristor control branch 6 is electrically connected with the controller 43, and the principle diagram of the heating circuit is as shown in Figure 3; The temperature sensor 44 is installed at the hot air outlet 102 .

The thyristor control branch 6 includes an optocoupler and a thyristor, and the controller, optocoupler and thyristor are connected in sequence, and the thyristor control branch 6 plays the role of switching on or off quickly automatically, When the temperature detected by the temperature sensor 44 deviates from the set temperature, the temperature sensor 44 feeds back the temperature value to the controller 43, and the controller 43 controls the opening and closing of the electric heating element 5 through the bidirectional thyristor control branch 6. On and off, so that the air in the casing 1 maintains a constant temperature state.

Each group of the heating circuit includes three electric heating elements 5, and the three electric heating elements 5 adopt a delta connection method, and the connection method of connecting the three-phase load to each two phase lines of the three-phase power supply is called a delta connection. , this connection helps to increase the heating power of the electric heating element.

The electric heating element 5 is an "M" type heating tube, the plane where the "M" type heating tube is located is parallel to the stainless steel partition 3, and the three "M" type heating tubes are along the The heating channels are arranged horizontally in turn. This design helps the electric heating element to dissipate heat evenly between the partitions, so that the air flowing through the partitions can be evenly and fully heated.

The control circuit 4 also includes an indicator light, a display screen, a buzzer and a control button, and the indicator light, a display screen, a buzzer and a control button are all electrically connected with the controller 43, so as to realize controlling the temperature of the gas in the box. Real-time monitoring and operation.

Described hot air box also comprises electric box 7, and described electric box 7 is electrically connected with box body 1 by wire, and electric box 7 is provided with indicator light, display screen, buzzer and control button, realizes better monitoring in the box body. The temperature of the gas is monitored and operated in real time.

Example 2

Set the temperature of the cabinet 1, turn on the heating circuit, the air passes through the cold air inlet 101 from the bottom of the cabinet 1 and enters the cabinet 1 under the action of the fan 2, and then moves to the top of the cabinet 1, and the air passes through the stainless steel partition 3 Slowly rise along the Z-shaped gas heating channel under the barrier, and the air is fully heated under the heat conduction of the electric heating element 5;

The temperature of the air in the cabinet 1 is collected by the temperature sensor 44. When the temperature in the cabinet 1 collected by the temperature sensor 44 deviates from the set temperature, the temperature sensor 44 feeds back the temperature value to the controller 43, and the controller 43 The A/D converter in the circuit receives the temperature signal, converts it into a data signal and sends it to the microprocessor, and the microprocessor performs analysis and processing after receiving the data signal, so that the thyristor is turned on or off through the optocoupler. And then realize the opening and closing of the heating circuit with the bidirectional thyristor control branch 6, so that the air in the box 1 maintains a constant temperature state, and automatically selects to close one or two or three heating circuits with The bidirectional thyristor controls the heating circuit of the branch 6, and the air is finally discharged through the hot air outlet 102 and enters the next process.

Although the present invention has been described in detail with general descriptions and specific examples above, it is obvious to those skilled in the art that some modifications or improvements can be made on the basis of the present invention. Therefore, the modifications or improvements made on the basis of not departing from the spirit of the present invention all belong to the protection scope of the present invention.

Claims (10)

1. An electric control hot air box, characterized in that the hot air box comprises a hollow structure casing (1) and a blower fan (2), the bottom of the casing (1) is provided with a cold air inlet (101), and the top is provided with There is a hot air outlet (102), and a blower fan (2) is connected to the cold air inlet (101); a plurality of stainless steel partitions (3) parallel to each other are sequentially arranged in the box body (1) along the vertical direction. A stainless steel partition (3) makes the inner chamber of the box body (1) form a "Z"-shaped gas heating channel; the hot air box also includes a control circuit (4), and the control circuit (4) includes a power input terminal (41 ), power supply module (42), controller (43), temperature sensor (44) and heating circuit, power input terminal (41), power supply module (42) and controller (43) are connected in turn, temperature sensor (44) and The heating circuits are all electrically connected to the controller (43); the heating circuits include electric heating elements (5), and the electric heating elements (5) are installed in the heating channel between adjacent stainless steel partitions (3); the heating The circuit is provided with at least two groups, wherein at least one group is provided with a bidirectional thyristor control branch (6), and the bidirectional thyristor control branch (6) is electrically connected to the controller (43); the temperature sensor (44) Installed at the hot air outlet (102). 2. A kind of electric control hot air box as claimed in claim 1, is characterized in that, the quantity of described stainless steel dividing plate (3) is seven, and described heating circuit is provided with eight groups; Wherein three groups of heating circuits (45 ) is provided with a thyristor control branch (6). 3. A kind of electric control hot wind box as claimed in claim 2, is characterized in that, described thyristor control branch (6) comprises optocoupler and thyristor, and described controller, optocoupler and thyristor Connect sequentially. 4. An electric-controlled hot air box according to claim 2, characterized in that, each group of said heating circuits includes three electric heating elements (5), and the three electric heating elements (5) adopt a delta connection. 5. An electrically controlled hot air box according to claim 1, characterized in that the electric heating element (5) is an "M" type heating tube. 6. A kind of electric control hot air box as claimed in claim 1, is characterized in that, described control circuit (4) also comprises indicator lamp, display screen, buzzer and control button, and described indicator lamp, display screen, Both the buzzer and the control buttons are electrically connected to the controller (43). 7. A kind of electric control hot wind box as claimed in claim 1, is characterized in that, described hot wind box also comprises electric box (7), and described electric box (7) is electrically connected with casing (1) by wire, The electric box (7) is provided with an indicator light, a display screen, a buzzer and control buttons. 8. An electric-controlled hot air box according to claim 1, characterized in that the number of said stainless steel partitions (3) is greater than or equal to two and less than or equal to thirty. 9. A kind of electric control hot wind box as claimed in claim 1, is characterized in that, described casing (1) is provided with stainless steel liner, and described stainless steel clapboard (3) and described electric heating element (5 ) are installed in the liner. 10. A method of using an electric-controlled hot air box according to any one of claims 1-9, wherein the method of use comprises the following: Set the temperature of the cabinet (1), turn on the heating circuit, and the air passes through the cold air inlet (101) and enters the cabinet (1) from the bottom of the cabinet (1) under the action of the fan (2), and then flows to the cabinet (1) ) moves in the direction of the top, the air rises slowly along the Z-shaped gas heating channel under the obstruction of the stainless steel partition (3), and the air is fully heated under the heat conduction of the electric heating element (5); The temperature of the air in the cabinet (1) is collected by the temperature sensor (44), and when the temperature in the cabinet (1) collected by the temperature sensor (44) deviates from the set temperature, the temperature sensor (44) feeds back the temperature value For the controller (43), the controller (43) controls the opening and closing of the electric heating element (5) through the bidirectional thyristor control branch (6), so that the air in the box (1) maintains a constant temperature state, The air is finally discharged into the next process through the hot air outlet (102).