WO2018120146A1

WO2018120146A1 - Combustor and gas water heater having same

Info

Publication number: WO2018120146A1
Application number: PCT/CN2016/113787
Authority: WO
Inventors: 代先锋; 仇正良; 梁国荣
Original assignee: 芜湖美的厨卫电器制造有限公司
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2018-07-05

Abstract

A combustor (20) and a gas water heater (1) having same. The combustor (20) comprises a combustor body (21), the combustor body (21) comprising an upper combustion tray (100) and a lower combustion tray (200), the lower combustion tray (200) being mounted onto the upper combustion tray (100) and being underneath the upper combustion tray (100), a flow channel (210) and a fire hole (220) in communication with the flow channel (210) being defined between the upper combustion tray (100) and the lower combustion tray (200) and an air inlet (230) in communication with the flow channel (210) being provided on the lower combustion tray (200), one of the upper combustion tray (100) and the lower combustion tray (200) being provided with a discharge nozzle (110) which is connected to the other of the upper combustion tray and the lower combustion tray, the discharge nozzle (110) having a discharge channel (111) therein which runs through the combustor body (21) in a vertical direction with the cross-sectional area thereof tapering from top to bottom.

Description

Burner and gas water heater with same

Technical field

The present invention relates to the field of electrical appliance manufacturing technology, and in particular to a burner and a gas water heater having the same.

Background technique

The volumetric gas water heater in the related art is placed under the inner tank by a burner such as an atmospheric burner, and the high temperature flue gas contacts the cold inner wall surface in the initial cold combustion, and condensed water is easily generated, and the condensed water drops And stacked on the burner, it is easy to cause the burner to fire, affecting the combustion conditions. For this reason, some atmospheric burners are provided with drainage holes, but the arrangement of the drainage holes affects the structural strength of the burner and the flow of internal gas.

Summary of the invention

The present invention aims to solve at least one of the above technical problems in the related art to some extent. To this end, the present invention proposes a burner having the advantages of facilitating condensate discharge, stable combustion conditions, high structural strength, and smooth internal gas flow.

The invention also proposes a gas water heater having the burner.

In order to achieve the above object, an embodiment according to a first aspect of the present invention provides a burner comprising: an upper combustion disk; a lower combustion disk, the lower combustion disk being mounted on the upper combustion disk and located Below the upper combustion disk, a flow passage and a fire hole communicating with the flow passage are defined between the upper combustion disk and the lower combustion disk, and the lower combustion disk is provided with a communication passage with the flow passage. a gas inlet, one of the upper combustion disk and the lower combustion disk is provided with a drain nozzle connected to the other, the drain nozzle has a vertical cross-section of the combustion body and a cross-sectional area from the top to the bottom A gradually decreasing drainage channel.

The burner according to the embodiment of the present invention has the advantages of facilitating condensed water discharge, stable combustion conditions, high structural strength, and smooth internal gas flow.

In addition, the burner according to an embodiment of the invention may also have the following additional technical features:

According to an embodiment of the invention, the drain nozzle is provided on the upper combustion disk and the lower end of the drain nozzle is provided with a hook edge hooked on the lower combustion disk.

According to an embodiment of the present invention, a portion of the upper combustion disk forming an upper edge of the fire hole is bent upward, and a portion of the lower combustion disk forming a lower edge of the fire hole is bent downward.

According to an embodiment of the present invention, the flow path includes a mixing chamber and a pressure expansion chamber that communicate with each other, the air inlet is in communication with the mixing chamber, and the fire hole is in communication with the pressure expansion chamber.

According to an embodiment of the present invention, the upper combustion disk is provided with an outer convex portion corresponding to the position of the expansion chamber, an inner upper convex portion corresponding to the position of the mixing chamber, and the expansion chamber and the chamber a lower concave portion corresponding to a joint position of the mixing chamber, the drain nozzle being located on the lower concave portion.

According to an embodiment of the present invention, the upper combustion disk is provided with a guide portion corresponding to the position of the air inlet and recessed downward.

According to an embodiment of the invention, the lower combustion disk is provided with a flow guide disposed around the air inlet.

According to an embodiment of the present invention, the intake port is located at a center of the combustion body, and the fire holes are located at an outer peripheral edge of the combustion body and are arranged along a circumferential direction of the combustion body.

According to an embodiment of the invention, the drain nozzles are plural and are disposed at equal intervals along the circumference of the combustion body.

According to an embodiment of the second aspect of the present invention, there is provided a gas water heater comprising: a liner; a burner, the burner being a burner according to an embodiment of the first aspect of the present invention, The burner is disposed below at least a portion of the bladder.

A gas water heater according to an embodiment of the present invention has advantages such as reliable combustion, high structural strength, and the like by using the burner according to the embodiment of the first aspect of the present invention.

DRAWINGS

1 is a schematic structural view of a gas water heater according to an embodiment of the present invention.

2 is a schematic structural view of a burner according to an embodiment of the present invention.

3 is a top plan view of a burner in accordance with an embodiment of the present invention.

Reference mark:

Gas water heater 1,

The inner tank 10, the flue 11, the burner 20, the combustion body 21,

Upper combustion disk 100, drain nozzle 110, drain channel 111, hook edge 112, outer upper convex portion 120, inner upper convex portion 130, lower concave portion 140, guide portion 150,

Lower combustion disk 200, flow path 210, mixing chamber 211, diffuser chamber 212, fire hole 220, air inlet 230, shroud 240, and outer lower convex portion 250.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The following is described by reference to the drawings The embodiments described are illustrative and are not intended to limit the invention.

A gas water heater 1 according to an embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, a gas water heater 1 according to an embodiment of the present invention is a volumetric gas water heater and includes a liner 10 and a combustor 20, which may be an atmospheric burner.

The liner 10 has a flue 11 which, for example, penetrates the bladder 10 in the up and down direction. The burner 20 is disposed below at least a portion of the inner liner 10, and the burner 20 is opposed to the flue 11 in the up and down direction to facilitate the discharge of smoke.

A burner 20 in accordance with an embodiment of the present invention will first be described with reference to the drawings.

As shown in FIGS. 1-3, a combustor 20 according to an embodiment of the present invention includes a combustion body 21. The combustion body 21 includes an upper combustion disk 100 and a lower combustion disk 200.

The lower combustion disk 200 is mounted on the upper combustion disk 100 and the lower combustion disk 200 is located below the upper combustion disk 100. For example, the upper combustion disk 100 and the lower combustion disk 200 may be separately press-molded by a mold, and the upper combustion disk 100 and the lower combustion disk 200 may be mounted together by welding or crimping. A flow channel 210 and a fire hole 220 communicating with the flow channel 210 are defined between the upper combustion disk 100 and the lower combustion disk 200. The lower combustion disk 200 is provided with an air inlet 230 communicating with the flow channel 210, and the gas is connected by the air inlet. 230 enters the flow channel 210 and burns at the fire hole 220. One of the upper combustion disk 100 and the lower combustion disk 200 is provided with a drain nozzle 110 connected to the other of the upper combustion disk 100 and the lower combustion disk 200. The drain nozzle 110 has a drain passage 111 therein, and a drain passage 111 The combustion body 21 is penetrated in the up and down direction and the cross sectional area of the drain passage 111 gradually decreases from top to bottom.

According to the gas water heater 1 of the embodiment of the present invention, the drain nozzle 110 having the drain passage 111 is provided on one of the upper combustion disc 100 and the lower combustion disc 200, so that the high-temperature flue gas contacts the inner tank 10 when the first cold state is burned. The wall surface (for example, the wall surface of the flue 11), the water vapor of the high-temperature flue gas is condensed to form condensed water, and after the condensed water drops on the burner 20, it can be discharged downward through the drain passage 111 of the drain nozzle 110 to avoid condensed water. The long-term accumulation causes the burner 20 to be ignited, and the influence of the condensed water on the combustion condition is eliminated. Also, the drain nozzle 110 is disposed on one of the upper combustion disk 100 and the lower combustion disk 200 and is connected to the other of the upper combustion disk 100 and the lower combustion disk 200, whereby the structural strength of the combustion body 21 can be improved, and the drainage can be eliminated. Set the effect on the strength of the structure. In addition, the cross-sectional area of the drainage channel 111 is gradually reduced from top to bottom, on the one hand, the condensed water can be guided, the condensed water can be quickly flowed out of the drainage channel 111, and on the other hand, the drainage arrangement can be minimized. The effect is to ensure that the gas flow in the flow channel 210 is smooth, thereby ensuring reliable combustion.

The gas water heater 1 according to the embodiment of the present invention has advantages such as reliable combustion, high structural strength, and the like by using the burner 20 according to the above embodiment of the present invention.

A burner 20 in accordance with an embodiment of the present invention will now be described with reference to the accompanying drawings.

Specifically, as shown in FIG. 2 and FIG. 3, the upper combustion disk 100 and the lower combustion disk 200 are both disk-shaped, and the air inlet 230 is located at the center of the lower combustion disk 200, and the fire holes 220 are plural and plural. The fire hole 220 is located at the outer peripheral edge of the combustion body 21, and the plurality of fire holes 220 are arranged in the circumferential direction of the combustion body 21 to form a ring shape around the flow path 210, that is, the outer peripheral edge of the upper combustion disk 100 and the outer peripheral edge of the lower combustion disk 200. A plurality of fire holes 220 are defined therebetween.

Further, as shown in FIG. 2, the lower combustion disk 200 is provided with a flow guiding cover 240 extending around the air inlet 230 and extending downward. After the gas is ejected from the nozzle, the air can be guided by the air guiding cover 240. Port 230 enters flow channel 210 to prevent gas diffusion loss.

In some specific examples of the present invention, as shown in FIG. 2, the drain nozzle 110 is disposed on the upper combustion disk 100. For example, the drain nozzle 110 may be integrally formed with the upper combustion disk 100, and the lower end of the drain nozzle 110 is provided with a hook edge 112. The hook edge 112 may be folded outwardly from the lower end of the drain nozzle 110. The lower end of the drain nozzle 110 passes through the lower combustion disk 200 and the hook edge 112 is hooked on the lower combustion disk 200, thereby being combusted by the hook edge 112. The disk 200 further connects the upper combustion disk 100 and the lower combustion disk 200 at positions other than the mounting positions of the upper combustion disk 100 and the lower combustion disk 200, thereby further improving the overall structural strength of the combustion body 21, and is convenient in processing and assembly. High reliability.

In some embodiments of the present invention, as shown in FIG. 2, the portion of the upper combustion disk 100 that forms the upper edge of the fire hole 220 is bent upward, and the portion of the lower combustion disk 200 that forms the lower edge of the fire hole 220 is downward. Bend. In other words, the outer circumference of the upper combustion disk 100 is curved upward, and the outer circumference of the lower combustion disk 200 is curved downward. Thereby, a flame-stabilizing structure can be formed. When the fire hole 220 is burned, the flame spreads outward at the fire hole 220, and fills a portion between the outer peripheral edge of the upper combustion disk 100 and the outer peripheral edge of the lower combustion disk 200, expanding the flame. The roots allow the flame to form a stable combustion.

In some specific examples of the present invention, as shown in FIG. 2, the flow path 210 includes a mixing chamber 211 and a pressure expanding chamber 212 that communicate with each other, the air inlet 230 communicates with the mixing chamber 211 and the fire hole 220 communicates with the pressure expanding chamber 212. . In other words, the mixing chamber 211 is located at the center of the combustion body 21, the diffuser chamber 212 is disposed around the diffuser chamber 212, and a plurality of fire holes 220 are disposed around the diffuser chamber 212. The gas is ejected from the nozzle at a certain flow rate under a certain pressure, and the gas absorbs the primary air by its own energy. The gas and the air enter the mixing chamber 211 and are mixed by the air inlet 230, and the mixed gas enters the diffusing chamber 212 for supercharging. Finally, it burns at the fire hole 220.

In some specific examples of the present invention, as shown in FIG. 2 and FIG. 3, the upper combustion disk 100 is provided with an outer convex portion 120 corresponding to the position of the pressure expansion chamber 212 and protruding upward, and the lower combustion disk 200 is provided and expanded. The outer cavity convex portion 250 corresponding to the pressure chamber 212 and correspondingly downwardly protrudes, and the outer upper convex portion 120 and the outer lower convex portion 250 respectively extend in a circumferential direction along the circumferential direction of the combustion body 21 to define a pressure-expanding cavity 212. The upper combustion disk 100 is further provided with an inner upper convex portion 130 corresponding to the position of the mixing chamber 211 and protruding upward. The projection of the inner upper convex portion 130 in the horizontal plane is circular and the central axis of the inner upper convex portion 130 and the intake air The central axis of the port 230 coincides, the inner upper convex portion 130 constitutes the upper wall of the mixing chamber 211, and the outer upper convex portion 120 is disposed around the inner upper convex portion 130.

The upper combustion disk 100 is further provided with a position corresponding to the connection of the expansion chamber 212 and the mixing chamber 211 and is recessed downward. The lower recessed portion 140 extends in a ring shape along the combustion body 21 and is located between the outer upper convex portion 120 and the inner upper convex portion 130 in the radial direction of the combustion body 21, and the drain nozzle 110 is located on the lower concave portion 140. The condensed water thus dropped on the upper combustion disk 100 can flow down to the lower recess 140 under the guidance of the outer upper convex portion 120 and the inner upper convex portion 130, and can be discharged from the drain nozzle 110 on the lower concave portion 140, so that it can be further drained. The condensed water on the upper combustion disk 100 prevents condensed water from accumulating on the burner 20.

Alternatively, the outer upper convex portion 120 and the inner upper convex portion 130 may respectively protrude upward in a substantially circular arc shape, and the lower concave portion 140 may be recessed downward in a substantially circular arc shape, and the arc transition between the three.

Further, as shown in FIG. 3, in order to further improve the drainage effect, a plurality of drain nozzles 110 are provided, and a plurality of drain nozzles 110 are provided on the lower recessed portion 140 at equal intervals along the circumferential direction of the combustion main body 21.

In some specific examples of the present invention, as shown in FIG. 2 and FIG. 3, the upper combustion disk 100 is provided with a guiding portion 150 corresponding to the position of the air inlet 230 and recessed downward, and the guiding portion 150 may be spherically shaped and It is disposed at the center of the inner upper convex portion 130. After the combustion mixture enters the mixing chamber 211 from the air inlet 230, it can be turned into a horizontal flow direction under the guidance of the guiding portion 150, thereby making the flow of the combustion mixture smoother and facilitating the mixing of the gas and the air.

It will be understood by those skilled in the art that since the concave guide portion 150 is located at the center of the upper combustion disk 100, condensed water generated on the wall surface of the flue 11 is usually dropped at the outer periphery of the upper combustion disk 100, that is, Without drips at the center of the upper combustion disk 100, the condensed water at the outer periphery of the upper combustion disk 100 will flow down to the lower recess 140 under the guidance of the outer upper convex portion 120 and the inner upper convex portion 130, and therefore, the guide portion 150 will not Stack condensate.

According to the burner 20 of the embodiment of the present invention, the gas is ejected through the nozzle, enters the combustion body 21 from the intake port 230 at the center of the lower combustion disk 200, enters the mixing chamber 211 through the guide portion 150, and enters the fire through the diffuser chamber 212. Hole 220 is burned. When the first cold state burns, the high temperature flue gas contacts the wall surface of the cold inner tank 10 (ie, the wall surface of the flue 11), and the water vapor of the high temperature flue gas is condensed and adheres to the wall surface of the inner liner 10, and the condensed water is more with time. The more it is dropped, it falls down, falls on the burner 20, and then flows to the ground through the drain passage 111 of the drain nozzle 110, thereby avoiding the long-term residence and accumulation of the condensed water to cause an influence on the combustion flame. Moreover, when the flame is burned through the fire hole 220 having the stable flame structure, the flame spreads outward at the fire hole 220, and fills the flame-proof port, expanding the root of the flame, so that the flame forms a stable combustion.

Other configurations and operations of the gas water heater 1 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position of indications such as "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplification of the description, and does not indicate or imply that the device or component referred to has a specific orientation, is constructed and operated in a specific orientation, and thus It is not to be understood as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Or implicitly indicate the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Further, various embodiments or examples described in this specification can be joined and combined by those skilled in the art.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A burner comprising a combustion body, the combustion body comprising:

Upper combustion disk

a lower combustion disk, the lower combustion disk is mounted on the upper combustion disk and located below the upper combustion disk, and a flow channel is defined between the upper combustion disk and the lower combustion disk and is connected to the flow channel a fire hole and the lower combustion disk is provided with an air inlet communicating with the flow channel, and one of the upper combustion disk and the lower combustion disk is provided with a drain nozzle connected to the other, The drain nozzle has a drain passage that penetrates the combustion body in the up-and-down direction and gradually decreases in cross-sectional area from top to bottom.
The burner according to claim 1, wherein said drain nozzle is provided on said upper combustion disk and said lower end of said drain nozzle is provided with a hook edge hooked on said lower combustion disk.
A burner according to claim 1, wherein a portion of said upper combustion disk forming an upper edge of said fire hole is upwardly bent, and a portion of said lower combustion disk forming a lower edge of said fire hole Bend down.
A burner according to claim 1, wherein said flow passage includes a mixing chamber and a pressure expansion chamber communicating with each other, said intake port being in communication with said mixing chamber, said fire hole and said diffusing pressure The cavity is connected.
The burner according to claim 4, wherein the upper combustion disk is provided with an outer convex portion corresponding to the position of the expansion chamber, an inner convex portion corresponding to the position of the mixing chamber, and a lower recess corresponding to a position of a connection between the diffuser chamber and the mixing chamber, the drain nozzle being located on the lower recess.
The burner according to claim 1, wherein the upper combustion disk is provided with a guide portion corresponding to the position of the intake port and recessed downward.
A burner according to claim 1, wherein said lower combustion disk is provided with a flow guide disposed around said air inlet.
The burner according to any one of claims 1 to 7, wherein the intake port is located at a center of the combustion body, and the fire hole is located at an outer peripheral edge of the combustion body and along the The circumferential arrangement of the burning bodies.
The burner according to claim 8, wherein the plurality of drain nozzles are plural and are disposed at equal intervals along the circumferential direction of the combustion body.
A gas water heater characterized by comprising:

Liner

A burner, the burner of any of claims 1-9, disposed below at least a portion of the bladder.