Anti-backfire gas burner

Abstract

The utility model discloses an anti-backfire gas burner which comprises a burner body, a flaming cavity is arranged at the front end of the burner body, a gas nozzle is arranged in the flaming cavity, the rear end of the flaming cavity is communicated with an air supply cavity, guide grooves are formed in the two inner side walls of the air supply cavity, and partition plates are movably arranged in the guide grooves. A magnetic part is arranged at the position, under the partition plate, of the bottom of the burner body, an electric control lock is arranged at the top of the burner body, the spring bolt end of the electric control lock is close to the partition plate, and a fixing groove is formed in the bottom of the side, close to the electric control lock, of the partition plate. A control module, a transistor, a fly-wheel diode and a relay are integrated on the electric control board, and a starting switch is arranged at the rear end of the burner body. When the combustor is closed, the fire spraying cavity and the air supply cavity can be isolated, the backfire problem is effectively solved, and the safety performance of the combustor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a burner technical field, concretely relates to a kind of anti-backfire gas burners. BACKGROUND

[0002] With the progress of science and technology, the types of burners used in life and work are more and more, and the industries applied are more and more widely. Gas burners are divided into natural gas burners, city gas burners, etc. According to the combustion control mode of the burner, it is divided into single-stage fire burner, double-stage fire burner and proportional control burner. According to the fuel atomization method, it is divided into mechanical atomization burner and medium atomization burner. In the broad concept of burner, household water heaters, gas stoves and even lighters can be considered as a kind of burner.

[0003] The air supply cavity and the flame jet cavity of the existing gas burner are in communication. In use, the air supply device inside the air supply cavity adjusts the wind power to adjust the flame size. Because the air supply cavity and the flame jet cavity are connected, air-gas mixture gas remains in the air supply cavity, causing the flame to continue to burn after the burner is turned off and spread into the air supply cavity, damaging the internal components of the burner. There is a backfire problem, which is not conducive to the use of the burner and has certain safety hazards.

[0004] Therefore, the applicant has made a beneficial design and found a method to solve the above problems. The technical solution to be introduced below was generated in this background. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides an anti-backfire gas burner to solve the problems raised in the background.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] An anti-backfire gas burner includes a burner body. A flame jet cavity is provided at the front end of the burner body. A gas jet head is provided inside the flame jet cavity. An air supply cavity is provided at the rear end of the flame jet cavity in communication. Guide grooves are provided on both inner side walls of the air supply cavity. A partition plate is movably provided in the guide grooves. A pull block is provided at the top of the partition plate and penetrates through the top wall of the air supply cavity. A magnetic component is provided at the bottom of the burner body below the partition plate. An electric control lock is provided at the top of the burner body. The locking tongue of the electric control lock is close to the partition plate. A fixing groove is provided at the bottom of the side of the partition plate close to the electric control lock. An electric control box is provided at the top of the burner body. An electric circuit board is provided in the electric control box. A control module, a transistor, a freewheeling diode and a relay are integrated on the electric circuit board. A start switch is provided at the rear end of the burner body.

[0008] Preferably, the start switch is connected to the electric circuit board.

[0009] Preferably, the control module is connected with the transistor, the transistor is connected with the relay, and the freewheeling diode is connected with the relay.

[0010] Preferably, the relay is electrically connected with the electric lock.

[0011] Preferably, the magnetic member is provided with a magnetic shield.

[0012] Preferably, the burner body is provided with support wheels on both sides of the top of the partition plate.

[0013] Advantages

[0014] The above one or more technical solutions in the anti-backfire gas burner have at least one of the following technical effects:

[0015] In use, the partition plate is moved upward by pulling the pull block, current is transmitted to the circuit board by starting the switch, each electronic element is powered on, the transistor is turned on by the high level output of the control module, the relay coil of the transistor is powered on, the contact of the relay is closed, the electric lock is powered on, the lock tongue of the electric lock is inserted into the fixed groove on the partition plate, the partition plate is fixed, the air supply cavity and the flame jet cavity are connected, and air is sent into the flame jet cavity. When the use of the burner is completed, the burner is turned off by starting the switch, the transistor is turned off by the low level output of the control module, the relay coil is powered off, the contact is disconnected, the electric lock is powered off, the lock tongue is pulled out of the fixed groove, the partition plate is quickly moved downward under the action of gravity and the magnetic member, the flame jet cavity and the air supply cavity are isolated by the partition plate, the air supply is quickly cut off, the residual air-gas mixture is prevented from continuing to burn, the burner body is prevented from being damaged due to backfire, and the service life and safety performance of the burner are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a partition plate lifting structure schematic view of the utility model;

[0017] Figure 2 It is a partition plate lowering structure schematic view of the utility model;

[0018] Figure 3 It is a partition plate lifting cross-section structure schematic view of the utility model;

[0019] Figure 4 It is a partition plate lowering cross-section structure schematic view of the utility model;

[0020] Figure 5Fig. 1 is a schematic structural view of a backfire-proof gas burner according to the present application; Figure 3 Fig. 1 is a schematic structural view of a backfire-proof gas burner according to the present application;

[0021] Figure 6 Fig. 1 is a schematic structural view of a backfire-proof gas burner according to the present application; Figure 4 Fig. 1 is a schematic structural view of a backfire-proof gas burner according to the present application.

[0022] The correspondence between the reference signs of the figures and the component names is as follows:

[0023] 1, burner body; 2, flame injection cavity; 3, gas injection head; 4, air supply cavity; 5, guide groove; 6, partition plate; 7, pull block; 8, magnetic member; 9, electric control lock; 10, lock tongue; 11, fixing groove; 12, electric control box; 13, circuit board; 14, control module; 15, transistor; 16, freewheeling diode; 17, relay; 18, start switch; 19, magnetic shield; 20, support wheel. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be understood that the directions or position relationships indicated by the terms "upper", "lower", "left", "right" and the like are the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it should be understood that the terms "set", "mounted", "connected", "connected" should be understood broadly unless otherwise specified and limited, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In order to avoid too many unnecessary details, the structure or function which is well known will not be described in detail in the following embodiments.

[0028] As shown in Fig. 1, it is a schematic structural view of a backfire-proof gas burner according to a preferred embodiment of the present application; Figures 1-6 As shown in Fig. 1, it is a schematic structural view of a backfire-proof gas burner according to a preferred embodiment of the present application;

[0029] In this embodiment, including the burner body 1, the burner body 1 front end is equipped with the fire spouting cavity 2, the fire spouting cavity 2 inside is equipped with the gas jet head 3, the fire spouting cavity 2 rear end is communicated and is equipped with the air supply cavity 4 (the working principle of the burner body 1, the gas jet head 3, the air supply cavity 4 is known to those skilled in the art The technology is not described in the specification), the air supply cavity 4 both inside side wall is equipped with the guide slot 5, the guide slot 5 is movably provided with the baffle 6, the baffle 6 is made of iron-containing material, the guide slot 5 is used to guide the baffle 6, and the sliding structure of the baffle 6 is realized, the baffle 6 top penetrates the top wall of the air supply cavity 4 and is equipped with the pull block 7, the pull block 7 is used to pull the baffle 6 by the staff, the bottom of the baffle 6 is equipped with the magnetic member 8 below the burner body 1, the magnetic member 8 is a permanent magnet, which is used to provide magnetic force to adsorb the baffle 6, so that the speed of the baffle 6 is accelerated, the top of the burner body 1 is equipped with the electric control lock 9, the lock tongue 10 of the electric control lock 9 is close to the direction of the baffle 6, the bottom of the side close to the electric control lock 9 of the baffle 6 is provided with a fixed slot 11, when the electric control lock 9 is powered on, the lock tongue 10 is inserted into the fixed slot 11 to fix the baffle 6, the top of the burner body 1 is equipped with the electric control box 12, the electric control box 12 is used to accommodate electronic components, the electric control box 12 is equipped with a circuit board 13, the circuit board 13 is integrated with a control module 14, a transistor 15, a freewheeling diode 16 and a relay 17, and the rear end of the burner body 1 is equipped with a starting switch 18.

[0030] In this embodiment, the starting switch 18 is connected with the circuit board 13. The starting switch 18 makes the main power output to each device on the circuit board 13.

[0031] In this embodiment, the control module 14 is connected with the transistor 15, the transistor 15 is connected with the relay 17, and the transistor 15 is used as an electronic switch to convert the control signal into the on-off of the relay 17 coil; the freewheeling diode 16 is connected with the relay 17. The freewheeling diode 16 (such as 1N4007) is connected in parallel across the relay 17 coil, the cathode is connected to the positive electrode of the main power supply, and the anode is connected to the collector of the transistor 15, which is used to eliminate the reverse electromotive force when the relay 17 is powered off, and protect the transistor 15 and the control module 14.

[0032] In this embodiment, the relay 17 is electrically connected with the electric control lock 9. The electric control lock 9 is used as an actuator, and when the relay 17 coil is powered on, the contact is closed, the electric control lock 9 is powered on, the lock tongue 10 is inserted into the fixed slot 11, and the baffle 6 is fixed.

[0033] In the embodiment, the magnetic member 8 is externally covered with a magnetic shielding cover 19. The magnetic shielding cover 19 is made of a material capable of shielding the magnetic force of the magnetic member 8, and shields the magnetic force of the magnetic member 8 away from several surfaces of the partition plate 6, so as to avoid the magnetic member 8 from adsorbing external iron filings, and to concentrate the magnetic force of the magnetic member 8 on the surface close to the partition plate 6.

[0034] In the embodiment, the burner body 1 is provided with support wheels 20 on the top of the two sides of the partition plate 6, and the two support wheels 20 are respectively in contact with the two side surfaces of the partition plate 6. The support wheels 20 support the two sides of the partition plate 6, so that the partition plate 6 has good stability when sliding, and shaking is avoided.

[0035] Principle of the utility model:

[0036] In use, the pull block 7 is pulled to move the partition plate 6 upward, the starting switch 18 is started to transmit current to the circuit board 13, so that each electronic element is powered on, the control module 14 outputs a high level to make the transistor 15 conduct, the transistor 15 outputs to the relay 17 to make the relay 17 coil power on and the contact close, the electric control lock 9 is powered on to make the lock tongue 10 inserted into the fixed groove 11 on the partition plate 6, so that the partition plate 6 is fixed, so that the air supply cavity 4 and the flame spraying cavity 2 are communicated, so that the air supply cavity 4 can send air into the flame spraying cavity 2; when the use of the burner body 1 is finished, the starting switch 18 is started to close the burner, the control module 14 outputs a low level to make the transistor 15 cut off, and then the relay 17 coil is powered off, the contact is opened, the electric control lock 9 is powered off, the lock tongue 10 is pulled out of the fixed groove 11, the partition plate 6 is quickly moved downward under the action of gravity and the magnetic member 8, and then the partition plate 6 separates the flame spraying cavity 2 from the air supply cavity 4, the air supply is quickly cut off, the residual air and gas mixture is prevented from continuing to burn to cause backfire and damage the burner body 1, and the service life and safety performance of the burner are improved.

[0037] The installation mode, connection mode or setting mode of the anti-backfire gas burner are all common mechanical modes, and as long as the beneficial effects can be achieved, the implementation can be carried out.

[0038] The technologies not described in detail in the utility model are all known technologies, and the skilled person in the art can easily implement the utility model on the basis of understanding the specification, and the contents shown in the drawings are part of the specification.

[0039] The above is further detailed description of the utility model in combination with specific embodiments, and cannot be determined that the utility model specific implementation is limited to these descriptions. For ordinary skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope determined by the claims submitted by the utility model.

Claims

1. A backfire-proof gas burner, characterized in that: The utility model relates to a kind of gas stove, including burner body (1), the burner body (1) front end is equipped with flame spraying cavity (2), the flame spraying cavity (2) inside is equipped with gas nozzle (3), the flame spraying cavity (2) rear end is communicated and equipped with air supply cavity (4), the air supply cavity (4) both inner side wall is equipped with guide groove (5), the guide groove (5) is movably equipped with baffle (6), the baffle (6) top is penetrated air supply cavity (4) top wall and is equipped with pull block (7), the burner body (1) bottom is located baffle (6) directly below and is equipped with magnetic piece (8), the burner body (1) top is equipped with electric control lock (9), the lock tongue (10) of electric control lock (9) is close to baffle (6) direction, the baffle (6) close to electric control lock (9) one side bottom is equipped with fixed groove (11), the burner body (1) top is equipped with electric control box (12), the electric control box (12) is equipped with circuit board (13) inside, the circuit board (13) is integrated with control module (14), transistor (15), freewheeling diode (16) and relay (17), the burner body (1) rear end is equipped with starting switch (18).

2. A backfire-proof gas burner as claimed in claim 1, characterized in that: The starting switch (18) is connected with the circuit board (13).

3. A backfire-proof gas burner as claimed in claim 1, characterized in that: The control module (14) is connected with the transistor (15), the transistor (15) is connected with the relay (17), and the freewheeling diode (16) is connected with the relay (17).

4. A backfire-proof gas burner according to claim 1, characterized in that: The relay (17) is electrically connected with the electric control lock (9).

5. A backfire-proof gas burner according to claim 1, characterized in that: The magnetic piece (8) is covered with a magnetic shield (19) outside.

6. A backfire-proof gas burner according to claim 1, characterized in that: The burner body (1) top is located on both sides of the baffle (6) and is equipped with a support wheel (20), and the two support wheels (20) are respectively in contact with the surfaces on both sides of the baffle (6).

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