CN219199521U - Swirl burner, burner and gas water heater - Google Patents

Abstract

The utility model belongs to the technical field of water heaters, and particularly provides a spiral-flow type combustion head, a combustor and a gas water heater. The utility model aims at solving the problem that the size of the gas water heater is large because the flame of the existing combustion head is long. To this end, the burner head of the present utility model includes a burner head body, a swirler, and a gas injection member for receiving gas. Wherein the combustion head body defines an injection passage. A swirler is mounted within the injection passage and is configured to swirl the airflow passing therethrough. The gas injection component comprises a gas guide pipe extending longitudinally along the injection channel and at least one injection pipe communicated with the gas guide pipe, wherein the injection pipe is arranged in the injection channel and is not parallel to the gas guide pipe, and at least one spray hole is arranged on each injection pipe. The utility model can effectively reduce the size of the gas water heater.

Description

Swirl burner, burner and gas water heater

Technical Field

The utility model belongs to the technical field of water heaters, and particularly provides a spiral-flow type combustion head, a combustor and a gas water heater.

Background

Gas water heaters generally include a burner and a heat exchanger, with the burner being used to heat the heat exchanger. Cold water is heated by the burner to hot water as it flows through the heat exchanger. Existing burners are typically arranged in a fire row. That is, the burner has a plurality of combustion heads distributed in a straight line so as to be arranged in a row. The flame from the burner head is generally directed vertically upward to heat the heat exchanger above it.

The fire grate type structure of the existing burner not only ensures that the mixing effect of the fuel gas and the air is poor, but also ensures that the overall size of the fuel gas water heater is larger because of longer flame length.

Disclosure of Invention

An object of the present utility model is to solve the problem of the large size of the gas water heater caused by the longer flame of the existing burner.

To achieve the above object, the present utility model provides in a first aspect a swirl-type burner head adapted for use in a gas water heater, the burner head comprising:

a combustion head body defining an injection passage;

a cyclone installed in the injection passage, the cyclone for swirling a gas flow flowing therethrough;

a gas injection member for receiving gas, the gas injection member comprising a gas duct extending longitudinally along the injection passage and at least one injection tube in communication with the gas duct, the injection tubes being disposed within the injection passage and non-parallel to the gas duct, each injection tube having at least one orifice disposed therein.

Optionally, the gas injection member comprises at least two injection pipes, and the at least two injection pipes are distributed at equal intervals along the circumferential direction of the gas guide pipe; and/or the jet pipe is perpendicular to the air guide pipe; and/or the spray pipe is provided with a plurality of spray holes, and the connecting line of the central points of the spray holes is parallel to the extension line of the spray pipe; and/or the spray holes are inclined outwards and upwards along the radial direction of the spray pipe.

Optionally, the ratio of the length of the injection pipe to the diameter of the injection channel ranges from 0.05 to 0.5.

Optionally, the cyclone comprises an outer ring, a central body and a plurality of blades arranged between the outer ring and the central body, and the cyclone is abutted with the side wall of the injection channel through the outer ring; the plurality of blades are equally spaced about the axis of the cyclone.

Optionally, the swirler is disposed above the gas injection member.

Optionally, the central body is an annular member; and/or the number of the groups of groups,

the combustion head further comprises a connecting piece arranged between the central body and the gas injection component, one end of the connecting piece is connected with the central body, and the other end of the connecting piece is connected with the gas injection component.

Optionally, the number of all the spray holes is in a value range of 2 to 20; and/or the value range of the number of the spray holes on each spray pipe and the total number of the blades is 2-10.

The present utility model provides in a second aspect a burner comprising a burner body and a burner head according to any one of the first aspects, the burner body being fixedly connected to or integrally formed with the burner head, the burner body defining an air inlet in communication with the cyclone.

Optionally, the burner comprises two said burner heads, the burner body defining an air inlet chamber in communication with the air inlet and each of the swirlers respectively.

The present utility model provides in a third aspect a gas water heater comprising:

the burner of any one of the second aspect,

a heat exchanger heated by the burner such that water within the heat exchanger is heated;

the fume collecting hood is provided with a fume outlet, and the fume outlet is used for discharging fume in the gas water heater.

Based on the foregoing description, it will be understood by those skilled in the art that in the foregoing technical solution of the present utility model, by providing the gas injection member to include a gas duct extending longitudinally along the injection passage and at least one injection tube communicating with the gas duct, the injection tubes are provided in the injection passage and are not parallel to the gas duct, and at least one injection hole is provided on each injection tube; and installing a cyclone in the injection channel, so that the airflow in the injection channel can generate cyclone under the action of the cyclone. Because the rotational flow has the circumferential speed along the circumferential direction of the injection channel, a larger coverage area is formed in the horizontal direction under the action of inertia and centrifugal force when the rotational flow flows out of the injection channel, and then flames with larger transverse areas are formed. Further, the cyclone changes the movement of the air flow from bottom to top into the spiral upward movement, so that the movement speed of the air flow from bottom to top is reduced, the height of the cyclone after the cyclone is sprayed out of the injection channel is reduced, and the distance between the combustion head and the heat exchanger can be shortened. Therefore, the utility model can effectively reduce the size of the gas water heater.

Further, through making injection pipe and air duct perpendicular, be provided with a plurality of orifices on the injection pipe to make the line of a plurality of orifice central points parallel with the extension line of injection pipe, and make the orifice upwards slope along the radial of injection pipe outward, make the gas that follow gas injection component blowout also can form certain whirl, thereby make gas whirl can stir the air, promoted the blending effect of gas and air.

Further, by arranging the swirler above the gas injection member, the swirling flow formed by the swirler is closer to the outlet of the injection passage, and the resistance loss of the swirling flow is reduced. By arranging the connecting piece between the central body and the gas injection component, the constant distance between the cyclone and the gas injection component is ensured, and the positioning and the installation of the cyclone and the gas injection component are convenient.

Still further, by setting the value ranges of the number of the injection holes on each injection pipe and the total number of the vanes to 2 to 10, it is ensured that the gas flow after mixing has a sufficient swirl number while ensuring that the gas injection member injects the gas uniformly and thus the gas and air are mixed uniformly.

Other advantages of the present utility model will be described in detail hereinafter with reference to the drawings so that those skilled in the art can more clearly understand the improvements object, features and advantages of the present utility model.

Drawings

In order to more clearly illustrate the technical solution of the present utility model, some embodiments of the present utility model will be described hereinafter with reference to the accompanying drawings. It will be understood by those skilled in the art that components or portions thereof identified in different drawings by the same reference numerals are identical or similar; the drawings of the utility model are not necessarily to scale relative to each other. In the accompanying drawings:

FIG. 1 is a schematic diagram of a gas water heater in accordance with some embodiments of the present utility model;

FIG. 2 is a schematic illustration of the effect of a combustion head in some embodiments of the utility model;

FIG. 3 is a cross-sectional view of the gas injection member of FIG. 2 taken along the direction A;

FIG. 4 is a cross-sectional view of the ejector tube of FIG. 3 taken along direction B;

FIG. 5 is a schematic diagram of a cyclone in some embodiments of the utility model;

FIG. 6 is a schematic cross-sectional view of a cyclone in accordance with some embodiments of the utility model;

FIG. 7 is a schematic illustration of the deployment of blades of a swirler in some embodiments of the utility model.

Detailed Description

It should be understood by those skilled in the art that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model, and the some embodiments are intended to explain the technical principles of the present utility model and are not intended to limit the scope of the present utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive effort, based on the embodiments provided by the present utility model, shall still fall within the scope of protection of the present utility model.

It should be noted that, in the description of the present utility model, terms such as "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships, which are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Further, it should also be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

The swirl burner head and burner of the present utility model will be described in detail with reference to the accompanying drawings in combination with a gas water heater.

As shown in fig. 1, in some embodiments of the present utility model, a gas water heater includes a burner 100, a heat exchanger 200, a fume collection hood 300, and an igniter 400. Wherein the burner 100 is for receiving and mixing the gas and the air. The igniter 400 is used to ignite the burner 100 such that the burner 100 heats the heat exchanger 200 and thus the water flowing through the heat exchanger 200. The fume collecting hood 300 discharges fume generated by the gas water heater through a fume outlet 301 thereof.

With continued reference to FIG. 1, in some embodiments of the utility model, the combustor 100 includes a combustor body 110 and a combustion head 120. Preferably, the burner 100 includes two burner heads 120 mounted on the burner body 110. Alternatively, the skilled artisan can arrange the combustion head 120 in any other feasible number, such as one, three, four, etc., as desired.

With continued reference to FIG. 1, in some embodiments of the utility model, the burner body 110 defines an intake cavity 111 and an air inlet 112 in communication with the intake cavity 111. The burner body 110 introduces air into the air intake chamber 111 through the air inlet 112, thereby allowing the air in the air intake chamber 111 to enter the combustion head 120.

In addition, in other embodiments of the present utility model, those skilled in the art may omit the air inlet chamber 111 according to need, and provide the burner main body 110 with the air inlets 112 corresponding to the number of the burner heads 120, and make each air inlet 112 correspond to one burner head 120.

Further, in some embodiments of the present utility model, the air received by the burner body 110 is provided by a blower. In other words, the burner 100 may further include a blower to supply air to the burner body 110 through the blower.

As shown in fig. 1 and 2, in some embodiments of the utility model, the burner head 120 includes a burner head body 121, a gas injection member 122, a swirler 123, and an optional connector 124. Wherein the burner head body 121 is fixedly connected or integrally formed with the burner body 110. The gas injection member 122 is for receiving the gas, and the swirler 123 is for swirling the mixed gas and air. A connector 124 is provided between the gas injection member 122 and the swirler 123 for positioning the gas injection member 122 and the swirler 123 and for connecting the gas injection member 122 and the swirler 123 together.

As shown in FIG. 2, the burner head body 121 defines injection channels 1211. The top of the gas injection member 122 is located within the injection channel 1211, and the gas injection member 122 is configured to receive gas. Preferably, the gas inlet end of the gas injection member 122 extends to the outside of the burner body 110. Alternatively, a person skilled in the art may also provide an intake passage communicating with the gas injection member 122 on the burner body 110 as necessary to guide the gas to the gas injection member 122 through the intake passage.

As shown in fig. 2 and 3, the gas injection member 122 includes a gas conduit 1221 extending longitudinally along the injection passage 1211 and at least one injection tube 1222 in communication with the gas conduit 1221. The air intake end of the air duct 1221 extends to the outside of the burner body 110. Jet pipes 1222 are disposed in jet channels 1211 and are non-parallel to air ducts 1221, with at least one jet orifice 12221 being disposed on each jet pipe 1222.

Alternatively, as shown in fig. 3, the gas injection member 122 includes four injection pipes 1222, and the four injection pipes 1222 are equally spaced along the circumferential direction of the gas guide pipe 1221. Alternatively, one skilled in the art may arrange the jet pipes 1222 in any other feasible number, such as two, three, five, six, etc., as desired.

Alternatively, as shown in FIG. 3, jet 1222 is perpendicular to air duct 1221. Alternatively, the skilled artisan can arrange the jet tube 1222 to be inclined upwardly or downwardly as desired, while ensuring that the jet tube 1222 is not parallel to the air duct 1221.

As shown in fig. 2, the ratio of the length r of the jet tube 1222 to the diameter D of the jet channel 1211 ranges from 0.05 to 0.5, preferably from 0.3 to 0.5, such as 0.3, 0.4, 0.45, 0.5, etc.

As will be appreciated by those skilled in the art, this relationship between the injection tube 1222 and the injection channel 1211 prevents interference of the injection tube 1222 with the side walls of the injection channel 1211 while also providing adequate uniformity of the gas emitted from the gas injection member 122.

Further alternatively, the jet pipe 1222 is provided with a plurality of jet holes 12221, and the connection line of the center points of the plurality of jet holes 12221 is parallel to the extension line of the jet pipe 1222. That is, the plurality of injection holes 12221 are located on the same side of the extension line of the injection tube 1222.

As shown in FIG. 2, in some embodiments of the utility model, the diameter d of the orifice 12221 may range from 0.1mm to 3mm, such as 0.1mm, 0.5mm, 1mm, 2mm, 3mm, and so forth. Further preferably, the diameter d of the nozzle hole 12221 has a value ranging from 0.5mm to 1.5mm.

As shown in fig. 3 and 4, the nozzle 12221 is inclined radially outward and upward along the nozzle 1222 such that an angle β between the axis of the nozzle 12221 and the radial plane of the air duct 1221 is acute.

Those skilled in the art can understand that the included angle β can enable the fuel gas ejected from the nozzle 12221 to form a certain swirl, so that the fuel gas swirl can stir the air, and the blending effect of the fuel gas and the air is improved.

In addition, in other embodiments of the present utility model, the included angle β may be set to 0 as required by those skilled in the art. Alternatively, orifice 12221 is tilted downward radially outward of jet stack 1222. Those skilled in the art may also orient the orifices 12221 differently as desired, such as by arranging the line connecting the center points of the plurality of orifices 12221 on the jet 1222 in a spiral.

Further, in addition to providing a row of orifices 12221 as shown in FIG. 2 on the jet stack 1222, one skilled in the art may provide multiple rows (e.g., two, three, four, etc.) of orifices 12221 on the jet stack 1222 as desired.

As shown in FIG. 5, in some embodiments of the utility model, the swirler 123 includes an outer ring 1231, a center body 1232, and a plurality of vanes 1233, wherein the plurality of vanes 1233 are disposed between the outer ring 1231 and the center body 1232, and the plurality of vanes 1233 are equally spaced about the axis of the swirler 123.

As shown in fig. 2 and 5, the swirler 123 is abutted against the side wall of the injection passage 1211 through the outer ring 1231, and the swirler 123 is connected (e.g., abutted, clamped, adhered, welded, etc.) to the connection member 124 through the center body 1232.

Preferably, the abutment between the outer ring 1231 and the side wall of the injection passage 1211 is used to secure the swirler 123 to the burner head body 121. The central body 1232 is an annular member, and the connector 124 is inserted into the central body 1232 and thus is inserted together with the central body 1232 to prevent the air flow from flowing out of the central hole of the central body 1232.

It should be noted that the notch of the outer ring 1231 shown in fig. 5 is merely for facilitating understanding of the structure of the swirler 123 by those skilled in the art, and does not indicate that the outer ring 1231 is a split ring.

As shown in fig. 5 and 6, in some embodiments of the present utility model, the ratio between the outer diameter of the central body 1232 and the inner diameter of the outer ring 1231 ranges from 0.05 to 0.8. Specifically, the inner radius of the outer ring 1231 is denoted as Ro, the outer radius of the central body 1232 is denoted as Ri, and the ratio of Ri to Ro ranges from 0.05 to 0.8, for example, 0.05, 0.1, 0.25, 0.3, 0.4, 0.6, 0.8, and the like.

Preferably, the ratio of Ri to Ro ranges from 0.5 to 0.8.

As shown in fig. 5 and 7, in some embodiments of the present utility model, the blades 1233 are configured as helical blades, and the pitch angle θv of the blades 1233 ranges from 15 ° to 75 °, such as 15 °, 30 °, 45 °, 50 °, 60 °, 70 °, and so on. Preferably, θv has a value in the range of 45 ° to 75 °.

Further, in some embodiments of the utility model, the number of orifices 12221 on each jet pipe 1222 and the total number of blades 1233 can range from 2 to 10 (e.g., 2, 5, 8, 10, etc.) to ensure that the gas jet member 122 jets gas uniformly and thus mixes the gas with air while also ensuring that the gas flow after mixing has a sufficient swirl number.

Still further, in some embodiments of the present utility model, the number of all orifices 12221 ranges from 2 to 20, e.g., the number of all orifices 12221 ranges from 2, 8, 12, 15, 20, etc. Further preferably, the number of all the nozzle holes 12221 is in the range of 8 to 20.

Returning to FIG. 2, the ratio of the distance H from the tip of the gas injection member 122 to the tip of the swirler 123 to the distance H from the tip of the injection passage 1211 to the tip of the swirler 123 ranges from 0.1 to 0.8 so that the gas and air have a sufficiently long path for blending.

As shown in fig. 2, in some embodiments of the utility model, one end of the connector 124 is connected (preferably plugged) to the central body 1232, and the other end of the connector 124 is connected (abutted, glued, snapped or welded) to the gas injection member 122. The connector 124 is used to define the distance between the swirler 123 and the gas injection member 122 to facilitate positioning and installation of the swirler 123 and the gas injection member 122.

The following is a brief description of the operation of the gas water heater according to some embodiments of the present utility model with reference to fig. 1.

When the gas water heater is in operation, gas enters the gas injection member 122 from the inlet of the gas injection member 122 and is ejected through the nozzle 12221. Air enters the air intake chamber 111 from the air inlet 112. The air in the air intake chamber 111 automatically flows to the two injection passages 1211 by the air pressure after being stabilized. After the air meets and mixes with the fuel gas, the air forms a swirl under the action of the swirler 123, and is then ejected from the injection passage 1211. The igniter 400 ignites the air flow emitted from the right one of the injection passages 1211 in fig. 1. The flame corresponding to the right hand side of one injection channel 1211 in fig. 1 ignites the air flow emitted from the other injection channel 1211. At this time, the flame begins to heat the heat exchanger 200, and the smoke after the airflow combustion is discharged from the smoke outlet 301 of the smoke collecting hood 300. The water in the heat exchanger 200 is heated by the flame for use by the user.

Based on the foregoing description, those skilled in the art will appreciate that in some embodiments of the present utility model, by disposing the gas injection member 122 to include a gas conduit 1221 extending longitudinally along the injection passage 1211 and at least one injection tube 1222 in communication with the gas conduit 1221, the injection tube 1222 is disposed within the injection passage 1211 and non-parallel to the gas conduit 1221, and at least one orifice 12221 is disposed on each injection tube 1222; and installing the cyclone 123 in the injection passage 1211 such that the air flow in the injection passage 1211 can generate a cyclone flow by the cyclone 123. Since the swirling flow has a circumferential velocity along the circumferential direction of the injection passage 1211, a large coverage area is formed in the horizontal direction by the inertial and centrifugal forces when the swirling flow flows out of the injection passage 1211, and thus a flame having a large lateral area is formed. Further, since the cyclone 123 changes the movement of the air flow from bottom to top into the spiral upward movement, the movement speed of the air flow from bottom to top is reduced, thereby reducing the height after the cyclone is ejected out of the injection channel 1211, and further, the distance between the burner head 120 and the heat exchanger 200 can be shortened. Therefore, the utility model can effectively reduce the size of the gas water heater.

Furthermore, in other embodiments of the present utility model, the swirler 123 may be provided in any other possible form, such as a radial swirler, a swirler having a plurality of coils, etc., as desired by those skilled in the art.

Thus far, the technical solution of the present utility model has been described in connection with the foregoing embodiments, but it will be readily understood by those skilled in the art that the scope of the present utility model is not limited to only these specific embodiments. The technical solutions in the above embodiments can be split and combined by those skilled in the art without departing from the technical principles of the present utility model, and equivalent changes or substitutions can be made to related technical features, so any changes, equivalent substitutions, improvements, etc. made within the technical principles and/or technical concepts of the present utility model will fall within the protection scope of the present utility model.

Claims (10)

1. A swirl burner head, wherein the burner head is adapted for use in a gas water heater, the burner head comprising:

a combustion head body defining an injection passage;

a cyclone installed in the injection passage, the cyclone for swirling a gas flow flowing therethrough;

a gas injection member for receiving gas, the gas injection member comprising a gas duct extending longitudinally along the injection passage and at least one injection tube in communication with the gas duct, the injection tubes being disposed within the injection passage and non-parallel to the gas duct, each injection tube having at least one orifice disposed therein.

2. The swirl burner head of claim 1 wherein the burner head comprises a burner head,

the gas injection member comprises at least two injection pipes which are distributed at equal intervals along the circumferential direction of the gas guide pipe; and/or the number of the groups of groups,

the jet pipe is perpendicular to the air guide pipe; and/or the number of the groups of groups,

the spray pipe is provided with a plurality of spray holes, and the connecting line of the central points of the spray holes is parallel to the extension line of the spray pipe; and/or the number of the groups of groups,

the spray holes are inclined outwards and upwards along the radial direction of the spray pipe.

3. The swirl burner head of claim 2 wherein the burner head comprises a burner head,

the ratio of the length of the injection pipe to the diameter of the injection channel ranges from 0.05 to 0.5.

4. A swirl burner according to any one of claims 1 to 3,

the cyclone comprises an outer ring, a central body and a plurality of blades arranged between the outer ring and the central body,

the cyclone is abutted with the side wall of the injection channel through the outer ring;

the plurality of blades are equally spaced about the axis of the cyclone.

5. The swirl burner head of claim 4 wherein the burner head comprises a burner head,

the swirler is disposed above the gas injection member.

6. The swirl burner head of claim 5 wherein the burner head comprises a burner head,

the central body is an annular member; and/or the number of the groups of groups,

the combustion head further comprises a connecting piece arranged between the central body and the gas injection component, one end of the connecting piece is connected with the central body, and the other end of the connecting piece is connected with the gas injection component.

7. The swirl burner head of claim 4 wherein the burner head comprises a burner head,

the number of all the spray holes is 2 to 20; and/or the number of the groups of groups,

the range of the number of the spray holes on each spray pipe and the total number of the blades is 2 to 10.

8. A burner comprising a burner body and a burner head as claimed in any one of claims 1 to 7,

the burner main body and the burner head are fixedly connected or integrally manufactured,

the burner body defines an air inlet in communication with the swirler.

9. A burner as claimed in claim 8, wherein,

the burner comprises two said burner heads,

the burner body defines an air intake chamber in communication with the air inlet and each of the swirlers, respectively.

10. A gas water heater, comprising:

the burner of claim 8 or 9,

a heat exchanger heated by the burner such that water within the heat exchanger is heated;

the fume collecting hood is provided with a fume outlet, and the fume outlet is used for discharging fume in the gas water heater.

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