JP2970965B2 - Gas burner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas burner in which a plurality of burner units are juxtaposed at a predetermined interval and used as a forced combustion gas burner for a water heater, a stove or the like.

[0002]

2. Description of the Related Art Combustion plates connected to opposed upwardly directed flame outlets
In a gas burner where a laminar flame is formed along
Secondary air flow for combustion collides with gas mixture from flame outlet
The contact between the combustion flame and the secondary air is disturbed, preventing stable combustion
Flow of the secondary air for combustion is
It is desirable not to collide with the flame , and if the clogging of the flame occurs, the following adverse effects occur.

[0003] As the pressure resistance of the burner increases, the primary air ratio drops below the design set value. Therefore, generation of abnormal combustion noise, generation of CO due to incomplete combustion, flashback, lift combustion, and the like occur.

If the state of clogging of the flame continues for a long time, high-temperature heating parts such as a combustion chamber and a heat exchanger are abnormally overheated, and cracks and holes are formed. High-temperature exhaust gas is generated from the cracks and holes. Leakage may burn the outer casing and cause fire, and burner deterioration and destruction due to flashback will be significant.

[0005] The above problems are caused by the low cost of hot water heaters and stoves.
It is indispensable for all uses and also prevents serious failures of water heaters, stoves and other appliances themselves .
Is it necessary also essential to that.

However, a conventional gas burner of this type is disclosed in, for example, Japanese Patent Publication No. 2-13201, and as shown in FIG. , 5 ', symmetrically extending combustion surface forming walls 3', 4 'extending upward and symmetrically extending upward, and a flame is formed along the combustion surface forming walls 3', 4 '. The formed structure enables an increase in the turndown ratio, a high load combustion, a reduction in combustion noise, and the like.

[0007]

In the above prior art, the combustion surface forming walls 3 ', which are inclined in a divergent manner, are provided.
4 ' only extends upward symmetrically, and
Ventilation holes are provided in the combustion surface forming walls 3 'and 4'.
However, the upper portions of the flame outlets 5 ', 5' are open widely.

Therefore, the gas burner is, for example,
When used as a water heater burner, the combustion flame and secondary air
Contact with the wall 3 ', 4'
The flame does not form into a laminar flame that tends to extend upwards,
In addition, facing upwardly directed flame outlets 5 ', 5'
However, falling objects such as burning oxides (scale) or dust generated in the heat exchangers and the like are generated in the burner flame outlets 5 and 5 .
To elicit a flame opening jam in input interrupt an early stage.

[0009] Even if the falling object does not enter the flame outlet and falls around the flame outlet, if it accumulates near the periphery of the flame outlets 5 'and 5' , the final vibration is caused by the vibration of the instrument and the increase of the deposit. the majority of the flame port 5 is in ', 5' there is a problem that say that you cause the burner ports clogged enters into.

The present invention has been made in view of the above-mentioned problems of the prior art, and has made the contact between the combustion flame and the secondary air smoother.
Time stable combustion, and combustion oxidation
Things, Ide proof from falling objects deposited by accommodating the reservoir portion provided at a position lower than said inflammatory opening between falling objects the burner port, such as dust from entering into the flame hole, also the burner port clogging by falling objects The purpose is to provide a gas burner that has been completely eliminated.

[0011]

In order to achieve the above object, a gas burner according to the present invention is provided such that a combustion plate body connected to an opposed upwardly directed flame port is inclined upward at an angle covering the flame port, and extends upward . In a gas burner in which a laminar flame is formed along the combustion plate, a slit with burring is formed on the combustion plate.
A plurality of ventilation holes are formed in parallel .

[0012] Then, the between the upward burner port to said phase counter
Combustion oxide lower than the flame opening position, falling objects such as dust contained sedimentary
It also characterized in that a reservoir for the product.

[0013]

According to the gas burner of the present invention, the gas burner has the above-described structure.
In a gas burner in which a flowing flame is formed, the combustion plate
Multiple ventilation holes consisting of slit holes with burring
And the secondary air flow from this vent hole
So that it does not collide with the mixed gas of
The contact with air is smooth, low noise and
And stable combustion without incomplete combustion can be obtained.
You.

[0014] Also, lower than the flame between the opposed flames
Reservoir where fallen objects such as combustion oxides and dust are stored and deposited
To remove combustion oxides or dust from the upper heat exchanger, etc.
Falling objects onto burners are sedimentary housed mostly all reservoir
So that sediment flows into the flame outlet as before.
The harmful effect of clogging the flame opening due to sediment
Can be safely burned at all times.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a gas burner according to the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show an embodiment in which only one of the opposed upwardly directed flame ports is covered by a combustion plate on the flame port side, wherein A is a burner body and a burner throat portion. 4
And a mixing section 5. Opposite upward flame ports 1, 1 are opened at the tip of the mixing section 5 so as to face diagonally upward in the same direction.

Reference numerals 2 and 2 denote combustion plate bodies connected to the upwardly directed flame ports 1 and 1, respectively, which are inclined to one side at substantially the same angle as the opening direction of the flame ports 1 and 1 and extend upward and extend upward. I have.

The opposed upwardly directed flame ports 1 and 1 and the combustion plates 2 and 2 are inclined in the same direction at different angles to form a flared shape in which the combustion plates 2 and 2 are inclined in the same direction. In addition, one of the combustion plates 2 is inclined inward of the vertical line c of the flame port 1, and the combustion plate 2 is inclined at an angle covering the flame port 1 so that the one of the flame ports 1 is on the flame side. (See FIG. 2).

A plurality of ventilation holes 6, 6 each having a burring slit hole having a height h equal to or greater than the thickness e of the flame ports 1, 1 are provided at equal intervals in the combustion plate bodies 2, 2. I
The combustion flames a, a and the secondary air b, are configured so that the flow of the combustion secondary air b, b from the ventilation holes 6, 6 does not collide with the mixed gas from the flame outlets 1, 1. The contact b is made smooth so that low noise and stable combustion without lift and incomplete combustion can be obtained.

[0020] 3 Combustion oxide, in accommodating deposited <br/> to reservoir the falling objects such as dust, the lower part between an upward flame hole 1,1 facing each, i.e., lower than the flame hole 1,1 Formed in position ,
Provided so that to all housed deposition of droppings on the reservoir 3, it is possible to drop the deposit enters the burner port 1,1
I'm trying.

FIG. 3 illustrates a case where a plurality of the gas burners according to the present invention are arranged side by side in a combustion chamber 7 and used as a forced combustion type gas burner such as a water heater or a stove. When the mixture of the fuel gas and the primary air for combustion is injected from the flame ports 1 and 1 and burns, the combustion flames a and a tend to extend upward along the oblique combustion plate bodies 2 and 2. Is formed in the laminar flow flame.

In the above embodiment, one of the opposed flame ports 1 and 1 opened obliquely upward in the same direction is inclined upward at substantially the same angle as the opening direction of the flame port 1 and extends upward. Since the combustion plate 2 on the side of the burner side covers the burner, even if combustion oxides or dust from the heat exchanger or the like falls on the burner, at least one of the burners 1 has a fallen object. There is no direct entry.

A lower portion between the opposed flame ports 1 and 1 ;
That is, a reservoir 3 is provided at a position lower than the flame outlets 1 and 1 for accommodating and accumulating falling objects, and most of the falling objects such as combustion oxides and dust are stored in the accumulation unit 3. Housed and deposited . But,
Since the reservoir 3 is located at a position lower than the flame outlets 1,1, there is no room for sediment to enter the flame outlets 1,1.

FIG. 4 shows an embodiment in which both of the facing upwardly directed flame ports are covered with respective combustion plates, and the combustion connected to the upwardly directed flame ports 1, 1 which is opened inward. By extending the plate bodies 2 and 2 by inclining upward in a tapered shape at substantially the same angle as the opening direction of the flame ports 1 and 1,
It covered both of the burner ports 1, 1 in each of the combustion plate 2, 2
And from the flame port 1,1 between the opposed flame ports 1,1
Stores and deposits falling objects such as combustion oxides and dust in the lower position
A reservoir 3 is provided.

In this embodiment, both flame outlets 1, 1
Are covered with the combustion plates 2 and 2 so that even if combustion oxides or dust from the heat exchanger or the like falls onto the burner, the flame ports 1 and 1
Falling objects do not directly enter any of them.

Note that the storage and accumulation of the falling objects in the pool 3 will be described.
There are the same portions for the same as in the previous embodiment are denoted by the same reference numerals and a description thereof will be omitted. In FIG. 4 , reference numeral 8 denotes a spacer for positioning with an adjacent gas burner.

[0027]

Effect of the Invention gas burner of the invention, there is provided a gas burner phases opposite combustion plate body continuous upward flame hole and extending upward, laminar flame along the combustion plate body is formed, prior to
A plurality of slits with burring in the burning plate
Of the secondary air for combustion from this vent
Did the flow not collide with the gas mixture from the flame outlet?
The contact between the combustion flame and the secondary air becomes smoother,
Stable combustion without noise, lift and incomplete combustion
It is something that can be done.

Further, between the opposed upwardly directed flame outlets,
Stores and deposits falling objects such as combustion oxides and dust at lower positions
Since the reservoir is provided so that almost all of the falling matter onto the burner, such as combustion oxides or dust, from the heat exchanger or the like is stored and deposited in the reservoir , the deposit is formed in the flame outlet. It does not penetrate into the nozzle and clog the flame by the deposit . Therefore ,
Safe combustion can be performed at all times.

From the above, it is possible to eliminate all the adverse effects such as generation of abnormal combustion noise caused by clogging of the flame opening, generation of CO due to incomplete combustion, and deterioration, destruction or fire of a burner due to flashback. It has the effect that it has.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a gas burner according to the present invention.

FIG. 2 is a longitudinal sectional side view thereof.

FIG. 3 is a vertical sectional side view showing an example of a use state of the gas burner according to the present invention.

FIG. 4 is a vertical sectional side view showing another embodiment of the gas burner according to the present invention.

FIG. 5 is a schematic sectional view of a main part of a conventional example.

[Explanation of symbols]

1 upward flame hole 2 combustion plate body 3 reservoir Ri section a flame

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F23D 14/08 F23D 14/02 F23D 14/72

Claims (2)

(57) [Claims] 1. A tilted combustion plate body continuous upward flame hole which faces the angle overlying the flame hole is extended upward, the gas burner laminar flame along the combustion plate body is formed, the Combustion plate composed of slit holes with burring
A gas burner characterized by having a number of ventilation holes formed in parallel . 2. A lower portion between said opposed upwardly directed flame outlets.
Combustion oxides have position, gas burner of claim 1, wherein the falling objects such as dust provided reservoir <br/> portion for accommodating deposited.