CN201103930Y - High-efficient energy-saving gas cooker - Google Patents

Abstract

The utility model relates to an efficient energy saving gas cooker, which comprises a bottom surface shell, an air inlet pipe, a burner, a gas nozzle and a gas way pipe. The utility model is mainly and technically characterized in that the gas cooker also comprises an air nozzle, an air opening pipe, a proportional valve, a speed fan, a heat exchanger, a control main board and a thermal insulator used for preventing the heat dissipation which is arranged between the burner and the bottom surface shell; the proportional valve is connected with the gas nozzle by the gas opening pipe; the speed fan is connected with the air nozzle by the air way pipe; the heat exchanger which is provided with a flue gas channel, a flue gas inlet and a flue gas outlet is positioned on the bottom surface shell and is in contact with the bottom of the cooker; the control main board is electrically connected with the proportional valve and the speed fan; the gas cooker is characterized by ensuring the gas and air in the burner to burn completely in proportion, thus reducing the excess air quantity in the flue gas after the complete combustion, reducing the heat brought away by remnant air and being capable of using the heat effectively, etc.

Description

High-efficiency energy-saving gas cooker

Technical field: The utility model relates to a high-efficiency and energy-saving gas cooker.

Background technology: In the prior art, gas cookers mostly belong to atmospheric combustion, and the air is naturally injected once, so it is difficult to achieve complete premixing of gas and air, and the flue gas after combustion contains a large amount of excess air. Venting takes away the heat. In addition, the burned hot gas is naturally discharged along the bottom of the pot after heat exchange, taking away a considerable part of the heat, resulting in a loss of thermal efficiency. For overcoming these defectives, gas cooker has been developed.

Summary of the invention: The technical problem to be solved by this utility model is to provide a high-efficiency energy-saving gas cooker, which can make the gas entering the burner proportional to the air, complete combustion, reduce the excess air in the flue gas after complete combustion, Reduces the heat carried away by excess air and enables efficient use of heat.

The technical solution adopted by the utility model to solve its technical problems is: it includes a bottom shell, an air intake pipe, a burner, a gas nozzle, a gas pipe, and it also includes an air nozzle, an air pipe, a proportional valve, a speed-regulating fan, a heat exchange Insulator, control board, heat insulator placed between the burner and the bottom shell to prevent heat loss, the proportional valve is connected to the gas nozzle through the gas pipe, the speed regulating fan is connected to the air nozzle through the air pipe, and the heat exchanger is installed On the bottom shell and in contact with the bottom of the cooker, the heat exchanger is provided with a flue gas channel, a flue gas inlet, and a flue gas outlet, and the control board is electrically connected with the proportional valve and the speed regulating fan.

The air nozzle is connected to the gas nozzle with screw teeth.

The intake pipe is connected to the proportional valve through a flange.

The utility model has the beneficial effects compared with the background technology:

1. Since the utility model adopts a heat exchanger, a proportional valve, a speed-regulating fan, a control board structure, etc., it can make the gas entering the burner proportional to the air, complete combustion, and reduce the excess in the flue gas after complete combustion The amount of air can reduce the heat carried away by excess air, and can effectively use heat.

BRIEF DESCRIPTION OF THE DRAWINGS: Figure 1 is a schematic structural view of the utility model.

FIG. 2 is a structural diagram of the heat exchanger 1 in FIG. 1 .

FIG. 3 is a top view of the heat exchanger 1 in FIG. 2 .

FIG. 4 is a circuit diagram of the control board 10 in FIG. 1 .

Specific implementation: Referring to the accompanying drawing 1, this embodiment includes a heat exchanger 1, a heat insulator 2, a bottom shell 3, a burner 4, a gas nozzle 7, a gas pipe 8, a connecting wire 9, a control board 10, Air nozzle 11, air duct 12, speed-regulating fan 13, connecting nut 14, intake pipe 15, proportional valve 17, burner 4 includes burner seat 5 and burner cover 6. The gas nozzle 7 is connected to the burner seat 5 through a thread, the gas nozzle 7 is connected to the gas pipe 8 using a connecting nut 14, the gas pipe 8 is connected to the proportional valve 17 through a nut, and the proportional valve 17 and the intake pipe 15 are connected through a flange 16 Connection; air nozzle 11 is connected with gas nozzle 7 with thread, and then uses connection nut 14 to connect with air duct 12;

Referring to accompanying drawings 2 and 3 , the heat exchanger 1 is provided with a flue gas passage 18 , a flue gas inlet 19 and a flue gas outlet 20 .

Referring to shown in accompanying drawing 4, control mainboard 10 comprises single-chip microcomputer 24, proportional valve control circuit 22, proportional valve feedback circuit 23, main valve control circuit 21, speed-regulating fan control circuit 25, the PWM signal output of the PB1 pin output of single-chip microcomputer 24 At the input end of the proportional valve control circuit 22, the output end of the proportional valve feedback circuit 23 is connected to the A/D port of the single-chip microcomputer 24, the PB0 of the single-chip microcomputer 24 is connected to the input end of the main valve control circuit 21, and the PB2 pin of the single-chip microcomputer 24 outputs The PWM signal is connected to the input end of the speed-regulating fan control circuit 25.

The proportional valve control circuit 22 includes resistors R1, R7, R10, diode D1, transistors Q1, Q4, proportional valve BLF, the base of the transistor Q1 is connected to the pin PB1 of the microcontroller 24 through the resistor R1, and the emitter of the transistor Q1 Grounded, the collector of the transistor Q1 is connected to the 24V power supply through the resistor R7, connected to the base of the transistor Q4 through R10, the collector of the transistor Q4 is connected to the 24V power supply, the emitter is connected to the proportional valve BLF and the diode D1, and the other end of the proportional valve BLF It is connected to the input end of the proportional valve feedback circuit 23, and the other end of the diode D1 is grounded.

The proportional valve feedback circuit 23 includes resistors R9, R13, capacitors C4, C5, one end of the resistor R13, the output end of the proportional valve control circuit 22, one end of the resistor R9 is connected to one end of the capacitor C5, and the other end of the resistor R9 is connected to the capacitor C4 and the A/D input port of the single-chip microcomputer 24, the other end of the resistor R13, the capacitor C4 and the capacitor C5 are grounded.

The main valve control circuit 21 includes resistors R8, R11, R12, capacitor C3, diodes D2, D3, transistors Q3, Q5, main valve R14, the base of the transistor Q3 is connected to the resistor R11 through the capacitor C3, and the resistor R11 is another One end is connected to the pin PB0 of the single-chip microcomputer 24, the emitter of the transistor Q3 is grounded, the collector of the transistor Q3 is connected to the 24V power supply through the resistor R8, and connected to the base of the transistor Q5 through R12, and the collector of the transistor Q5 is connected to the 24V power supply. The pole is connected to the main valve BLF and the diode D2, and the other end of the main valve and the other end of the diode are grounded.

The speed-regulating fan control circuit 25 includes resistors R2, R3, R4, R5, R6, capacitors C1, C2, triode Q2, relay OP1, bidirectional thyristor TR1, fuse FUSE1, speed-regulating fan FG, and triode Q2 The base of the transistor is connected to the pin PB2 of the microcontroller 24 through the resistor R6, the emitter of the transistor Q2 is grounded, the collector of the transistor Q2 is connected to the negative input terminal of the relay OP1, the positive input terminal of the relay OP1 is connected to the 5V power supply through R5, and the relay OP1 outputs One end is connected to the trigger end of thyristor TR1 through resistor R3, the other end of relay OP1 output is connected to one end of thyristor TR1 through resistor R4, and one end of AC 220V power supply is connected to one end of thyristor through fuse FUSE1. The other end of the AC 220V power supply is connected to the other end of the speed-regulating fan.

In the actual operation process, the control board 10 controls the opening degree of the proportional valve 17 to adjust the firepower, and at the same time controls the air volume of the speed-regulating fan 13 to meet the air volume required for complete combustion, so that the gas entering the burner is proportional to the air (The ratio value is calculated according to the excess air coefficient of 1.1 to 1.3), to achieve complete combustion, reduce the amount of excess air in the flue gas after complete combustion, and reduce the effect of heat taken away by the excess air; the high-temperature flue gas after complete combustion Enter the flue gas passage 18 through the flue gas inlet 19, rotate in the flue gas passage 18, fully contact with the bottom of the pot, enhance the heat exchange ability, and then the flue gas is discharged from the flue gas outlet 20, so that the complete combustion can be fully utilized The final heat energy is used for the purpose of improving thermal efficiency.

The pot and the heat exchanger 1 are matched, and can be separated, connected, or combined into one, so that the bottom of the pot can be in better contact with the heat exchanger 1, so that the hot gas after combustion can flow in the pot The flue gas flows between the bottom and the heat exchanger 1, which increases the heat exchange area, enhances the heat exchange capacity, and achieves the effect of improving thermal efficiency; the control board 10 controls the opening of the proportional valve 17 and the air volume of the speed-regulating fan 13 , so that the gas passing through the proportional valve 17 is proportional to the air volume of the speed-regulating fan 13 (the proportional value is calculated based on the excess air coefficient of 1.1 to 1.3), so as to achieve full premixing and complete combustion, and reduce the amount of excess air in the flue gas after combustion. Thereby reducing the heat taken away by the excess air and achieving the effect of improving thermal efficiency. Simultaneously proportional valve 17 also plays the function of regulating firepower size.

Claims (3)

1, a kind of efficiency energy saving gas range, it comprises bottom surface shell (3), air inlet pipe (15), burner (4), gas nozzle (7), combustion gas siphunculus (8), it is characterized in that it also comprises air nozzle (11), air siphunculus (12), proportioning valve (17), adjustable speed fan (13), heat exchanger (1), control mainboard (10), the insulator (2) that the prevention heat of pad between burner (4) and bottom surface shell (3) scatters and disappears, proportioning valve (17) is connected with gas nozzle (7) by combustion gas siphunculus (8), adjustable speed fan (13) is connected with air nozzle (11) by air siphunculus (12), heat exchanger (1) is placed in bottom surface shell (3) and goes up and contact bottom cooker, described heat exchanger (1) is provided with exhaust gases passes (18), gas approach (19), exhanst gas outlet (20), control mainboard (10) and proportioning valve (17), adjustable speed fan (13) electrically connects.

2, efficiency energy saving gas range according to claim 1 is characterized in that described air nozzle (11) is connected on the gas nozzle (7) with thread.

3, efficiency energy saving gas range according to claim 1 and 2 is characterized in that described air inlet pipe (15) is to be connected on the proportioning valve (17) by flange plate (16).

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