WO2020237745A1

WO2020237745A1 - Fire row of burner

Info

Publication number: WO2020237745A1
Application number: PCT/CN2019/091656
Authority: WO
Inventors: 颜安军
Original assignee: 浙江广涛卫厨有限公司
Priority date: 2019-05-27
Filing date: 2019-06-18
Publication date: 2020-12-03
Also published as: DE202019104844U1; CN210004391U

Abstract

A fire row of a burner, comprising a holder (1) and a row of fire row pieces (2) disposed thereon. Adjacent fire row pieces (2) abut against each other one by one. The holder (1) is fixedly connected to a gas distribution rod (3) having a gas inlet end. The first row piece (2) comprises a housing (2a). Gas inlet channels (2b) are provided at two sides of the housing (2a). The two gas inlet channels (2b) are provided symmetrically. A combustion cavity (2d) is provided on an upper end of the housing (2a). An upper end of the gas inlet channel (2b) is in communication with the combustion cavity (2d). A combustion plate (2e) is provided on the upper end of the combustion chamber (2d). The gas inlet channel (2b) comprises a gas inlet portion (2b1) and a flow guide portion (2b2). A gas inlet (2c) is provided on a lower end of the gas inlet portion (2b1). The gas inlet portion (2b1) is inclined from bottom to top towards the outer side of the housing (2a). The flow guide portion (2b2) is inclined from bottom to top towards the middle of the housing (2a). Two rows of nozzles (4) are provided at an upper side of the gas distribution rod (3). The fire row of the burner has advantages of anti-backfire and high combustion efficiency.

Description

Burner fire row

Technical field

The utility model belongs to the technical field of machinery, and relates to a fire radiator, particularly a fire radiator of a burner.

Background technique

Gas hot water equipment, such as gas water heaters or gas boilers, are usually equipped with burners, heat exchangers, and combustion chambers containing the burners and heat exchangers. Burners often include several fire platoons arranged side by side, and each fire platoon has a gas-air mixing channel, which can mix gas and air in it and pass it to the fire hole on the top of the fire plat to burn and generate in the combustion chamber. Heat, the generated heat can heat the water in the heat exchanger, so that the heated water can be used for drinking, bathing, or heating.

At present, burners have been widely used in various households, such as gas stoves, wall-hung boilers and other household appliances. The existing wall-hung boiler is a water heater that uses natural gas as energy. It has anti-freeze protection, dry-burn protection, accidental flameout protection, Various safety protection measures such as over-temperature protection and water pump anti-jamming protection. Wall-hung boilers have powerful household central heating functions, so they are widely used. As we all know, the burner in wall-hung boilers is a key component of the performance and efficiency of wall-hung boilers. Therefore, the fire grate assembly is the main component of the burner, and its performance appears Particularly important. In actual work, due to the design defects of the fire exhaust assembly, there is a problem of insufficient combustion of the burner, resulting in a relatively high content of nitrogen oxides in the flue gas emitted by the burner.

For example, a low-nitrogen burner fire row assembly (application number: 201721560894.5) disclosed in the Chinese Patent Literature includes a fire row and a fire hole piece arranged at the upper end of the fire row. Two connected venturis are provided at both ends of the fire row. The inner tube, the venturi tube is an air inlet pipe with a narrow lower end and gradually expanding upward. The upper ends of the two venturi tubes are equipped with diversion pressure grooves, and a number of cooling pipe holes and fire holes are arranged between the two venturi tubes. A number of fire holes are uniformly opened on the upper end of the film, and the venturi tube is connected with the plurality of fire holes. However, the intake duct of the fire exhaust assembly of the low-nitrogen burner is vertically arranged, which should be prone to backfire, which reduces the combustion efficiency.

Summary of the invention

The purpose of the present utility model is to solve the above-mentioned problems in the prior art, and propose a fire exhaust with a burner that can prevent backfire and has high combustion efficiency.

The purpose of the utility model can be achieved by the following technical solutions: the fire row of the burner includes a bracket and a row of fire row pieces arranged on the bracket, and the adjacent fire row pieces abut against each other in turn, and the brackets A gas distributor rod with an air inlet end is fixedly connected, the gas distributor rod is located on the lower side of the fire discharge piece and the fire discharge piece is arranged along the axial direction of the gas distributor rod, characterized in that the fire The platoon includes a casing, both sides of the casing are provided with intake passages, the two intake passages are symmetrically arranged, the upper end of the casing has a combustion chamber, and the upper end of the intake passage Connected with the combustion chamber, the upper end of the combustion chamber is provided with a combustion plate, the intake passage includes an intake portion and a drainage portion, the upper and lower ends of the drainage portion are respectively connected to the combustion chamber and the intake The upper end of the air part is connected, the lower end of the air inlet is an air inlet, the air inlet is inclined from bottom to top to the outer side of the housing, and the drainage part is from bottom to up to the housing The middle part of the gas distribution rod is arranged obliquely, and the upper side of the gas distribution rod is provided with two rows of nozzles, and the nozzles are arranged in a one-to-one correspondence with the air inlets of the fire platoon.

When working, the gas enters from the inlet end of the gas splitter, and is injected into the inlet of the corresponding fire plate through the nozzle, and drives the air at the inlet of the inlet to flow to the inlet channel, where the gas and air are mixed It flows through the drainage part to the combustion chamber and burns at the combustion plate of the combustion chamber. Because the intake part of the fire plate is inclined from bottom to top to the outside of the shell, the drainage part is inclined from bottom to top to the middle of the shell. Therefore, it can effectively reduce the backfire caused by combustion, improve the combustion efficiency, and make the fire row of the burner have a compact structure, save materials, and reduce costs.

In the above-mentioned fire row of the burner, the bracket is in the shape of a plate and one side of the bracket is provided with a bending part for installation. One side of the bracket is provided with a bending part for installation, which is convenient for installation and increases the strength of the bracket.

In the above-mentioned combustor fire row, the lower end of the air inlet is an air inlet and the air inlet is a bell mouth with a downward opening. The air inlet is a bell mouth, which has the advantage of better air intake effect.

In the above-mentioned combustor fire row, the width of the lower end of the drainage part is larger than the width of the upper end thereof. With the above arrangement, backfire can be effectively avoided and the combustion efficiency is improved.

In the above-mentioned combustor fire row, the air inlet part is in the shape of a straight hole, and the angle a formed by the axis of the air inlet part and the horizontal line is 52°-65°. Preferably, the included angle a formed by the air intake portion and the horizontal line is 60°.

In the above-mentioned combustor fire row, the outer side wall of the drainage part is provided with positioning bosses, and the positioning bosses are symmetrically arranged. The positioning bosses between the adjacent fire row pieces of the burner abut against each other, which has a better positioning effect on the fire row pieces, thereby reducing the processing accuracy of the fire row housing and reducing the manufacturing cost.

In the above-mentioned combustor fire row, the casing includes a plate body one and a plate body two with a groove in the middle, and the groove of the plate body one and the groove of the plate body two form the aforementioned combustion chamber And the intake channel. The grooves of the first plate body and the second plate body form the above-mentioned combustion chamber and the air inlet channel, and have the advantages of simple structure and convenient manufacturing.

In the above-mentioned fire row of the burner, the first plate abuts on the second plate and the two sides of the first plate have flanges, and the flange abuts on the的板体二 On the outer side wall. The flanging of the plate body one abuts on the plate body two to realize the solid connection between the plate body one and the plate body two, which has a firm connection and is relatively convenient to manufacture, and at the same time avoids gas leakage in the combustion chamber.

In the above-mentioned combustor fire row, the middle part of the casing is provided with a number of communicating holes for the cooling pipe to pass through, and the communicating holes are located between the two air inlet passages. A horizontally arranged U-shaped cooling pipe is penetrated between the fire row fins, and the cooling pipes pass through the two communication holes of the fire row fins. By providing the above-mentioned communicating hole, it is convenient to insert the cooling pipe and has the advantage of convenient installation.

In the above-mentioned combustor fire row, the first plate body and the second plate body are made of aluminum alloy. The first body and the second body are made of aluminum alloy, which has the advantages of lighter weight and longer service life. As another way, both the first plate and the second plate are made of stainless steel.

Compared with the prior art, the fire row of the burner has the following advantages:

1. Since the air intake part of the fire platoon is inclined from bottom to top to the outside of the shell, and the drainage part is inclined from bottom to top to the middle of the shell, it can effectively reduce the backfire caused by combustion and improve the combustion efficiency. In addition, the fire row of the burner has a compact structure, saves materials, and reduces the cost.

2. One side of the bracket is provided with a bending part for installation, which is convenient for installation and increases the strength of the bracket;

3. The width of the lower end of the drainage part is greater than the width of its upper end, which can effectively avoid backfire and improve the combustion efficiency;

4. The connecting hole is located between the two air intake channels, which facilitates the insertion of the cooling pipe and has the advantage of convenient installation.

Description of the drawings

Fig. 1 is a three-dimensional schematic diagram of the fire row of the burner.

Fig. 2 is a schematic diagram of the fire row fins and nozzles of the fire row of the burner.

Fig. 3 is a three-dimensional schematic diagram of the fire row piece of the fire row of the burner.

In the figure, 1. bracket; 1a, bending part; 2. fire plate; 2a, shell; 2b, air inlet channel; 2b1, air inlet; 2b2, drainage part; 2c, air inlet; 2d, combustion chamber 2e. Combustion plate; 2f. Positioning boss; 2g. Flanging; 2h. Connecting hole; 3. Dividing rod; 4. Nozzle; 5. Cooling pipe.

Detailed ways

The following are specific embodiments of the present utility model combined with the accompanying drawings to further describe the technical solution of the present utility model, but the present utility model is not limited to these embodiments.

As shown in Figures 1 to 3, the fire row of the burner includes a support 1 and a row of fire platoons 2 arranged on the support 1. The adjacent fire platoons 2 abut against each other in turn, and the support 1 is fixedly connected with an air inlet The gas distribution rod 3 at the end, the gas distribution rod 3 is located under the fire row piece 2 and the fire row piece 2 is arranged along the axial direction of the gas distribution rod 3. The bracket 1 is plate-shaped and one side of the bracket 1 has a bend for installation The part 1a is convenient to install and increases the strength of the bracket 1.

The fire platoon 2 includes a casing 2a. Both sides of the casing 2a are provided with intake passages 2b. The two intake passages 2b are arranged symmetrically. The upper end of the casing 2a has a combustion chamber 2d. The upper end of the intake passage 2b and the combustion chamber 2d is connected. The upper end of the combustion chamber 2d is provided with a combustion plate 2e. The intake passage 2b includes an intake portion 2b1 and a drainage portion 2b2. The upper and lower ends of the drainage portion 2b2 are respectively connected to the combustion chamber 2d and the upper end of the intake portion 2b1. The lower end of the air inlet portion 2b1 is an air inlet 2c, and the air inlet 2c is a bell mouth with a downward opening, which has the advantage of better air intake effect. Two rows of nozzles 4 are arranged on the upper side of the air splitting rod 3, and the nozzles 4 are arranged in a one-to-one correspondence with the air inlets 2c of the fire row fins 2.

The air intake portion 2b1 is inclined from bottom to top toward the outside of the housing 2a. The air intake portion 2b1 is a straight hole and the angle a formed by the axis of the air intake portion 2b1 and the horizontal line is 52°-65°. Preferably, the included angle a formed by the air inlet portion 2b1 and the horizontal line is 60°.

The drainage portion 2b2 is inclined from bottom to top toward the middle of the casing 2a. The width of the lower end of the drainage portion 2b2 is larger than the width of the upper end, which can effectively avoid backfire and improve the combustion efficiency. The outer side wall of the drainage part 2b2 is provided with positioning bosses 2f and the positioning bosses 2f are symmetrically arranged. The positioning bosses 2f between the adjacent fire row pieces 2 of the burner are against each other, and the fire row piece 2 has better The positioning effect reduces the processing accuracy of the housing 2a of the fire blast and reduces the manufacturing cost.

The housing 2a includes a plate body 1 and a plate body 2 with a groove in the middle. The groove of the plate body 1 and the groove of the plate body 2 form the above-mentioned combustion chamber 2d and the air intake passage 2b, and has a simple structure and convenient manufacturing. advantage. The first plate is attached to the second plate and the two sides of the first plate are provided with flanging 2g and the flanging 2g is attached to the outer side wall of the second plate to realize the fixed connection between the first plate and the second plate, and the connection is firm Moreover, it is more convenient to manufacture, and at the same time, gas leakage in the combustion chamber 2d is avoided.

The first body and the second body are made of aluminum alloy, which has the advantages of lighter weight and longer service life. As another way, both the first plate and the second plate are made of stainless steel.

The middle of the housing 2a is provided with a number of communicating holes 2h for the cooling pipe 5 to pass through, and the communicating holes 2h are located between the two air intake passages 2b, and horizontally arranged U-shaped cooling pipes pass through between the fire fins 2 5. The cooling pipes 5 both pass through the two communicating holes 2h of the fire row fins 2, which has the advantages of convenient installation and high structural strength.

When working, the gas enters from the inlet end of the gas splitting rod 3, and is injected into the inlet 2c of the corresponding fire plate 2 through the nozzle 4, and drives the air at the inlet 2c of the inlet 2b1 to the inlet channel 2b flows, the gas and air are mixed and flow through the suction part 2b2 to the combustion chamber 2d, and burn at the combustion plate 2e of the combustion chamber 2d. Because the air intake part 2b1 of the fire platoon 2 is inclined from bottom to top to the outside of the casing 2a , The drainage part 2b2 is inclined from bottom to top to the middle of the shell 2a, so it can effectively reduce the backfire caused by combustion, improve the combustion efficiency, and make the fire exhaust of the burner have a compact structure, save materials, and reduce costs. .

The specific embodiments described in this article are merely examples to illustrate the spirit of the present invention. Those skilled in the technical field of the present utility model can make various modifications or additions to the specific embodiments described or substitute similar methods, but they will not deviate from the spirit of the utility model or exceed the appended claims. The defined range.

Although this article uses the bracket 1, the bending part 1a, the fire plate 2, the casing 2a, the air intake passage 2b, the air intake part 2b1, the drainage part 2b2, the air intake port 2c, the combustion chamber 2d, the combustion plate 2e, Terms such as positioning boss 2f, flange 2g, communicating hole 2h, air distribution rod 3, nozzle 4, cooling pipe 5, etc., but the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; to interpret them as any additional restriction is contrary to the spirit of the utility model.

Claims

The fire row of the burner includes a bracket (1) and a row of fire row pieces (2) arranged on the bracket (1). The adjacent fire row pieces (2) abut each other in turn, and the bracket (1) ) Is fixedly connected to a gas distribution rod (3) with an air inlet end, the gas distribution rod (3) is located on the lower side of the fire discharge piece (2) and the fire discharge piece (2) is along the gas distribution rod The axial arrangement of the rod (3) is characterized in that the fire row piece (2) includes a shell (2a), and both sides of the shell (2a) are provided with air inlet channels (2b), and two The intake passages (2b) are arranged symmetrically, the upper end of the casing (2a) has a combustion chamber (2d), and the upper end of the intake passage (2b) is connected to the combustion chamber (2d). The combustion chamber (2d) is provided with a combustion plate (2e) at the upper end, and the intake passage (2b) includes an intake portion (2b1) and a drainage portion (2b2). The drainage portion (2b2) The upper and lower ends of 2b2) are respectively communicated with the combustion chamber (2d) and the upper end of the intake portion (2b1). The lower end of the intake portion (2b1) is the intake port (2c), and the intake portion (2b1) The drainage part (2b2) is inclined from bottom to top to the outside of the casing (2a), and the drainage part (2b2) is inclined from bottom to top to the middle of the casing (2a). The gas distribution rod (3) Two rows of nozzles (4) are arranged on the upper side of the slab, and the nozzles (4) are arranged in a one-to-one correspondence with the air inlets (2c) of the fire row piece (2).
The combustor fire row according to claim 1, characterized in that the bracket (1) is plate-shaped and one side of the bracket (1) has a bent portion (1a) for installation.
The combustor fire row according to claim 1, wherein the lower end of the air inlet portion (2b1) is an air inlet (2c) and the air inlet (2c) is open downward Trumpet.
The fire row of the burner according to claim 1 or 2 or 3, characterized in that the width of the lower end of the drainage part (2b2) is greater than the width of the upper end thereof.
The combustor fire row according to claim 1 or 2 or 3, characterized in that the intake portion (2b1) is in the shape of a straight hole and the axis of the intake portion (2b1) is formed by the horizontal line The included angle a is 52°-65°.
The fire row of the burner according to claim 1 or 2 or 3, characterized in that the outer side wall of the drainage part (2b2) is provided with positioning bosses (2f) and the positioning bosses ( 2f) All are set symmetrically.
The fire radiator of the burner according to claim 1 or 2 or 3, characterized in that, the casing (2a) comprises a plate body with a groove in the middle part and a plate body two. The groove and the groove of the second plate body form the above-mentioned combustion chamber (2d) and the air inlet passage (2b).
The fire row of the burner according to claim 7, characterized in that, the first plate abuts on the second plate and the two sides of the first plate have flanges (2g) and The flange (2g) is pressed against the outer side wall of the second plate.
The fire row of the burner according to claim 1 or 2 or 3, characterized in that the middle part of the casing (2a) is provided with a number of communicating holes (2h) for the cooling pipe (5) to pass through, and The communicating hole (2h) is located between the two air inlet passages (2b), and a horizontally arranged U-shaped cooling pipe (5) is inserted between the fire row fins (2), so The cooling pipes (5) mentioned above all pass through the two communicating holes (2h) of the fire row piece (2).