WO2018072607A1

WO2018072607A1 - Burner having heat sink

Info

Publication number: WO2018072607A1
Application number: PCT/CN2017/103992
Authority: WO
Inventors: 戴丁军; 卓宏强; 孙旭光; 何昌宝; 胡旭
Original assignee: 宁波市哈雷换热设备有限公司
Priority date: 2016-10-20
Filing date: 2017-09-28
Publication date: 2018-04-26
Also published as: CN106322744A; CN106322744B

Abstract

A burner having a heat sink, comprising: a burner body (1) and a heat sink (2), the burner body (1) being connected with the heat sink (2). The burner body (1) has a gas supply chamber, or cooperates with the heat sink (2) to form the gas supply chamber (11); the burner body (1) comprises a combustion layer surface (12), and the combustion layer surface (12) is a metal plate provided with combustion holes (121) on a surface thereof, wherein the total porosity rate of the metal plate provided with the combustion holes (121) is 14%-70%. The burner has a simple structure, a small volume, a high porosity rate on the combustion layer surface (12), and high combustion efficiency; at the same time, the temperature of the burner body (1) may be effectively reduced by means of the heat sink (2), such that the burner will not be overheated and damaged while at the same time ensuring high combustion intensity.

Description

Burner with heat sink

Technical field

The present invention relates to a burner, and more particularly to a burner with a heat sink.

Background technique

The burner, in particular the premixed burner, is mainly installed in the combustion chamber of the heat exchanger, and the heat generated by the combustion of the burner is exchanged and exchanged with the heat exchange body in the heat exchanger; the combustion of the burner currently on the market The total porosity on the level is generally about 12%. Because the porosity on the combustion level is too large, the thermal strength of the burner surface will be too large, causing abnormal problems such as high temperature, tempering and deformation of the burner. It is a common means to ensure the combustion intensity of the burner, thereby increasing the volume or height of the burner, resulting in an increase in the volume of the heat exchanger and an improved space.

Summary of the invention

SUMMARY OF THE INVENTION The present invention has been made to overcome the above-mentioned drawbacks of the prior art and to provide a burner having a high porosity, a large combustion strength, and capable of ensuring no overheating damage.

To achieve the above object, the present invention provides a burner with a heat sink comprising a burner body and a heat sink, the burner body being coupled to a heat sink, the burner body having a gas supply chamber, or a heat sink Cooperating to form a gas supply chamber, the burner body comprises a combustion layer, the combustion layer is a metal plate with a combustion hole on the surface, and the total porosity of the metal plate with combustion holes is 14% to 70%.

Through the above arrangement, the combustion layer of 14% to 70% porosity can provide greater combustion intensity, and at the same time, in order to ensure that the burner does not overheat and damage, the heat sink of the heat sink connected to the burner body can be effectively effective. Reduce the temperature of the burner body to effectively avoid overheating damage to the burner.

Further, the heat dissipating device has a fluid passage for fluid flow, and a liquid flows in the fluid passage for heat exchange with the burner body to cool the burner body.

Further, the heat dissipating device is a heat sink disposed on the burner body at intervals.

The above are two structures of the heat dissipating device, respectively, forcibly cooling the main body of the burner through the cooling liquid, increasing the heat dissipation efficiency through the heat sink, and improving the heat dissipating effect of the burner.

Further, it is set that the total porosity of the metal plate with combustion holes is 20% to 30%.

Further, the gas supply chamber is internally provided with an air flow distributor, and the structure of the air flow distributor is adapted to the structure of the combustion layer, and is a metal plate structure with air holes, and the air flow distributor and the combustion layer Set in the gap.

With the above arrangement, the combustion on the combustion level is made more complete by the splitting action of the air flow distributor.

Further, the burner body is a cylindrical structure, and the metal plate with the combustion hole is closed to form a cylinder wall of the burner body, and the metal plate with the combustion hole is a combustion layer of the burner body;

The airflow distributor is disposed in a burner body, and the airflow distributor is a cylindrical structure formed by enclosing a metal plate with air holes.

Further, the burner body further includes an end cap that covers an opening of the burner body.

Further, the end cover is provided with a combustion auxiliary hole.

Further, the burner body has a rectangular cross section, and the metal plate with the combustion hole is an arc panel and is sealed and disposed at one end of the burner body;

The metal plate with the air outlet is a second arc panel structure adapted to the metal plate structure with the combustion holes.

Further configured to: the burner body has a spherical structure, and the metal plate with the combustion hole is a first spherical thin shell structure having an opening at one end;

The metal plate with the air outlet is a second spherical thin housing structure adapted to the first spherical thin housing structure, and the second spherical thin housing gap is disposed in the first spherical thin housing.

The above is the case where the burner body has a cylindrical structure, a rectangular shape, and a spherical structure.

Further, it is set that the metal plate with the combustion hole and the metal plate with the air outlet are both stainless steel plates.

Further, it is set that more than 50% of the combustion layer has a porosity greater than or equal to 14%, wherein a combustion layer of 5% to 50% has a porosity of less than 14%.

Further, it is set that the combustion holes on the combustion layer are arranged in groups, and the groups are arranged at intervals.

Compared with the prior art, the invention has the advantages of simple structure, small volume, high porosity on the combustion layer and high combustion efficiency. At the same time, the fluid flowing in the fluid passage of the heat dissipating device exchanges heat with the burner body to ensure high combustion. Under the premise of strength, the burner will not be overheated and damaged, ensuring the service life and stability of the burner.

DRAWINGS

Figure 1 is a schematic perspective view of a burner of the present invention (cylindrical shape);

Figure 2 is a cross-sectional view (cylindrical) of the burner;

Figure 3 is a schematic perspective view of a burner (rectangular);

Figure 4 is a cross-sectional view of Figure 3;

Figure 5 is a schematic perspective view of the burner (heat sink, cylindrical);

Figure 6 is a schematic view of the three-dimensional structure of the burner (heat sink, rectangular).

The following reference numerals are marked on the drawing in conjunction with the drawings:

1. Burner body; 11, gas supply room; 12, combustion level; 121, combustion hole; 13, end cover; 14, air flow distributor; 141, air outlet; 15, bracket; 151, central gas inlet; Heat sink; 21, fluid passage; 22, heat sink.

detailed description

A specific embodiment of the present invention is described in detail below with reference to the accompanying drawings, but it is understood that the scope of the invention is not limited by the specific embodiments.

A burner with a heat sink according to the present invention is shown in FIG. 1, FIG. 2, FIG. 3 and FIG. The burner body 1 and the heat sink 2 are connected, and the burner body 1 is connected to the heat sink 2, and the heat sink 2 is used for cooling the burner body 1 to keep the burner body 1 at a relatively constant temperature. The temperature avoids damage to the burner body 1; the burner body 1 has a gas supply chamber 11 hollow or cooperates with the heat sink 2 to form a gas supply chamber 11, and the gas supply chamber 11 is provided with an air flow distributor 14 The airflow distributor 14 is a metal plate structure with an air outlet 141 for distributing and supplying gas to the combustion body for combustion; the burner body 1 includes a combustion layer 12, and the combustion layer 12 is a belt The metal plate having the combustion holes 121 has a total porosity of 14% to 70%, more preferably the total porosity of the combustion layer 12 is 20% to 30%, and the metal plate with the combustion holes 121 is preferably stainless steel. board.

As shown in FIG. 5 and FIG. 6 , the heat dissipating device 2 is configured to have a fluid passage 21 in which a coolant flows, and heat exchange with the combustor body 1 through the coolant to forcibly lower the combustor body. The temperature of 1; or the heat dissipating device 2 is configured to surround the fins 22 disposed on the burner body 1, and the heat dissipating area is increased by the fins 22 to improve the heat dissipating efficiency, thereby enhancing the heat dissipating effect of the combustor body 1, thereby enabling the burner Body 1 is kept at a lower temperature to avoid damage.

Embodiment 1

A burner with a heat sink 2 of the present invention is shown in FIGS. 1 and 2, the burner body 1 has a cylindrical structure including a combustion layer 12 and an end cap 13, and the combustion layer 12 has a combustion hole The metal plate of 121 is preferably made of stainless steel or copper, and the metal plate with the combustion hole 121 encloses the wall of the burner body 1 to form a combustion surface 12 of the burner body 1, on which the combustion layer 12 is The combustion hole 121 has a total porosity of 14% to 50%; the air flow distributor 14 is disposed in the gas supply chamber 11, and the structure of the air flow distributor 14 is adapted to the structure of the combustion layer 12, and has an air outlet 141. And the metal plate is enclosed to form a cylindrical structure, preferably made of stainless steel or copper, disposed on the inner side of the combustion layer 12 and disposed in a gap with the combustion layer 12; the end cover 13 is connected to the upper end of the combustion layer 12, The end cap 13 may be provided as a non-porous concave or convex or flat plate body structure as needed, or a combustion auxiliary hole may be provided on the plate body for assisting combustion.

The heat sink 2 has a fluid passage 21 for fluid flow, which is a closed annular knot The outer side of the burner body 1 is connected to the burner body 1, preferably at the bottom end of the burner body 1, and the fluid passage 21 is disposed in the annular surface of the heat sink 2, and the fluid passage 21 can be forced. The fluid inside flows around the burner body 1 for heat exchange, and the temperature of the burner body 1 can be effectively reduced by heat exchange, thereby ensuring that the burner is not damaged by overheating; preferably, the fluid passage 21 of the heat sink 2 can be exchanged The heat exchanger flow paths of the heat exchanger are connected.

As shown in FIG. 2, the burner body 1 further includes a bracket 15, and the lower end of the combustion layer 12 and the airflow distributor 14 are connected to the bracket 15. The bracket 15 is disposed in a circular ring structure, and a central gas inlet 151 is formed in the middle of the bracket 15. The gas is supplied to the gas supply chamber 11, and the heat sink 2 is sleeved outside the combustion layer 12 and mounted on the bracket 15.

The burner body 1 can be provided with a bracket 15 as needed, and when there is no bracket 15, the heat sink 2 is directly connected to the lower end of the combustion floor 12.

Embodiment 2

A burner with a heat sink 2 of the present invention is shown in FIGS. 3 and 4. The burner body 1 has a rectangular cross section, and the burner body 1 includes a combustion layer 12, and the combustion layer 12 is a belt. The metal plate of the combustion hole 121 is preferably made of stainless steel or copper, and the combustion layer 12 is covered at one end of the gas supply chamber 11, preferably in a curved structure, and the combustion hole 121 is distributed on the combustion layer 12, The porosity is 14% to 70%; the gas flow distributor 14 is disposed in the gas supply chamber 11 and located below the metal plate with the combustion hole 121, and the air flow distributor 14 is adapted to the metal plate structure with the combustion hole 121. The second arc panel structure is provided, and the air outlet 141 is disposed on the plate body of the airflow distributor 14.

The heat sink 2 has a fluid passage 21, the heat sink 2 is a rectangular closed structure, the heat sink 2 is disposed outside the burner body 1, and the fluid passage 21 is disposed along a rectangular outer contour, so that the fluid passage 21 can The forced fluid is heat-exchanged around the burner body 1 and the burner body 1, so that the temperature of the burner body 1 can be effectively reduced, and the burner can be prevented from being overheated and damaged.

As shown in FIG. 4, the burner body 1 further includes a bracket 15, the bracket 15 is a cover structure, and a central gas inlet 151 is disposed in a middle portion of the bracket 15, and the bracket 15 cooperates with the combustion layer 12 to form a gas. Supply room 11.

Embodiment 3

The burner body 1 has a spherical structure, and the metal plate with the combustion hole 121 is a first spherical thin shell structure having an opening at one end, which constitutes the combustion layer 12 of the burner body 1, and the combustion on the combustion layer 12 The total porosity of the holes 121 is 14% to 70%; the air flow distributor 14 is a metal plate with an air outlet 141, and the air flow distributor 14 is a second spherical thin body adapted to the first spherical thin housing structure. The housing structure is disposed in a first spherical thin housing with a gap, and the heat sink 2 is coupled to the open end of the first spherical thin housing.

The combustion holes 121 in the combustion layer 12 in the first embodiment, the second embodiment and the third embodiment are arranged in groups, and the combustion holes 121 are densely distributed in a region to form a collecting unit, and the collecting units are spaced apart from each other. A separation band is disposed between the two collection units.

It should be noted that the structure in which the heat sink 2 is combined with the burner body 1 is not limited by the embodiment, and may be arbitrarily combined as a new embodiment, which will not be enumerated here.

More than 50% of the combustion zone 12 has a porosity greater than or equal to 14%, wherein from 5% to 50% of the combustion zone 12 has a porosity of less than 14%.

Compared with the prior art, the invention has the advantages of simple structure, small volume, high porosity on the combustion layer 12, high combustion efficiency, and heat exchange between the fluid flowing in the fluid passage 21 of the heat dissipating device 2 and the burner, thereby ensuring heat dissipation. Under the premise of high combustion intensity, the burner will not be overheated and damaged, ensuring the service life and stability of the burner.

The above disclosure is only the embodiment of the present invention, but the present invention is not limited thereto, and any changes that can be considered by those skilled in the art should fall within the protection scope of the present invention.

Claims

A burner with a heat dissipating device, comprising: a burner body and a heat sink, wherein the burner body is connected to a heat sink, the burner body has a gas supply chamber, or cooperates with the heat sink to form a gas supply The burner body includes a combustion layer, and the combustion layer is a metal plate having a combustion hole on the surface, and the total porosity of the metal plate with the combustion hole is 14% to 70%.
A heat sink with a heat sink according to claim 1, wherein the heat sink has a fluid passage for the coolant to flow, and a coolant flows in the fluid passage for the burner body. Heat exchange.
A heat sink with a heat sink according to claim 1, wherein the heat sink is a fin that is disposed around the burner body.
A burner with a heat dissipating device according to claim 1 or 2 or 3, wherein the metal plate with the combustion holes has a total porosity of 20% to 30%.
The burner with a heat dissipating device according to claim 4, wherein the gas supply chamber is internally provided with an air flow distributor, and the structure of the air flow distributor is adapted to the structure of the combustion layer. The airflow distributor is a metal plate structure with an air outlet, and the airflow distributor is disposed in a gap with the combustion layer.
A burner with a heat dissipating device according to claim 5, wherein the burner body has a cylindrical structure, and the metal plate with a combustion hole encloses a wall of the cylinder forming the burner body. The metal plate with a combustion hole is a combustion layer of the burner body;

The airflow distributor is disposed in a burner body, and the airflow distributor is a cylindrical structure formed by enclosing a metal plate with air holes.
A burner with a heat sink according to claim 6, wherein said burner body further comprises an end cap that covers an open end of said burner body.
A burner with a heat sink according to claim 7, wherein the end cap is provided with a combustion auxiliary hole.
A burner with a heat dissipating device according to claim 5, wherein the burner body is a rectangular frame structure, and the metal plate with the combustion hole is an arc panel and dense The seal is disposed at one end of the burner body;

The metal plate with the air outlet is a second arc panel structure adapted to the metal plate structure with the combustion holes.
The burner with a heat dissipating device according to claim 5, wherein the burner body has a spherical structure, and the metal plate with a combustion hole is a first spherical thin shell structure having an opening at one end;

The metal plate with the air outlet is a second spherical thin housing structure adapted to the first spherical thin housing structure, and the second spherical thin housing gap is disposed in the first spherical thin housing.
A burner with a heat sink according to claim 1, wherein the metal plate with the combustion holes and the metal plate with the air holes are both stainless steel plates.
A burner with a heat dissipating device according to claim 1, wherein more than 50% of the combustion level has a porosity greater than or equal to 14%, wherein a combustion layer of 5% to 50% has a lower ratio. 14% porosity.
A burner with a heat dissipating device according to claim 1, wherein the combustion holes on the combustion level are arranged in groups, and the groups are arranged at intervals.