Outdoor gas heater

Abstract

The present disclosure discloses an outdoor gas heater. The outdoor gas heater includes a base assembly, a support rod for supporting a burner assembly, and the burner assembly, where the base assembly directly supports the burner assembly or indirectly supports the burner assembly through the support rod, the burner assembly includes an ignition plate and a burner, and the burner has a protrusion portion for increasing a surface area of the burner. By adopting the above method, an area of the perforated portion becomes larger through a combustion mesh having the protrusion portion, and the burner absorbs more heat of flames near the ignition plate, thus improving a thermal absorption effect of the burner.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] The present application claims the benefit of Chinese Patent Application Nos. 202520469206.2 filed on Mar. 17, 2025, 202521120608.8 filed on Jun. 3, 2025 and 202521449353.X filed on Jul. 11, 2025. All the above are hereby incorporated by reference in their entirety.TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of heaters, and in particular, to an outdoor gas heater.BACKGROUND

[0003] Heaters supply heat to users through thermal convection and radiation generated during gas combustion. Generally, when the heater is used outdoors, heat is mainly transferred through thermal radiation due to influence of environment. The gas combustion takes place in a burner of the heater. For the sake of safety, the gas combustion is conducted in a combustion mesh, and most of the heat is supplied to the users through thermal radiation of the combustion mesh. However, since the combustion mesh is a regular plane or curved surface, a radiation area of the combustion mesh is limited, and the heating effect is limited. In addition, the heater is generally ignited by turning on a knob switch of a gas valve, and then the user presses the knob switch with one hand to keep gas flowing, while pressing an ignition device with the other hand to ignite the gas in the burner. The ignition process requires operation with two hands, resulting in inconvenient ignition.

[0004] In view of that, it is urgent to design an outdoor gas heater to solve one or more technical problems in the prior art.SUMMARY

[0005] A technical solution adopted by the present disclosure for solving the technical problems is as follows: an outdoor gas heater includes a base assembly, a support rod for supporting a burner assembly, and the burner assembly, where the base assembly directly supports the burner assembly or indirectly supports the burner assembly through the support rod, the burner assembly includes an ignition plate and a burner, and the burner has a protrusion portion for increasing a surface area of the burner; the heater further includes a valve assembly, and the valve assembly is fixedly connected to the burner assembly; the valve assembly includes a gas valve, a knob, and an ignition assembly; and the knob is configured to open or close the gas valve, gas flows to the ignition plate when the gas valve is opened, the knob is linked with the ignition assembly, and the ignition assembly is configured to emit an electric spark to the ignition plate.

[0006] In a preferred example, the burner includes a perforated portion and a connection portion for connection, and the protrusion portion is disposed on the perforated portion; and the perforated portion includes a body portion, and the protrusion portion protrudes from the body portion in a direction far away from the body portion.

[0007] In a preferred example, the perforated portion includes an inner surface and an outer surface; the protrusion portion protrudes from the body portion toward a side of the inner surface; or the protrusion portion protrudes from the body portion toward a side of the outer surface; or a portion of the protrusion portion protrudes from the body portion toward a side of the inner surface, and a portion of the protrusion portion protrudes from the body portion toward a side of the outer surface.

[0008] In a preferred example, the protrusion portion is in a shape of a strip, a hemisphere, or a quarter sphere, and the perforated portion has mesh holes; the mesh holes are formed in the body portion; or the mesh holes are formed in the protrusion portion; or some mesh holes are formed in the protrusion portion, and some mesh holes are formed in the body portion; or one of the mesh holes is partially formed in the protrusion portion, and is partially in the body portion.

[0009] In a preferred example, the burner has a central axis, and the protrusion portion located on the perforated portion surrounds the central axis; the protrusion portion at least partially extends in a length direction of the perforated portion; or the protrusion portion at least partially extends in a circumferential direction of the perforated portion.

[0010] In a preferred example, a height of the protrusion portion is less than or equal to nine tenths of a height of the burner, and is greater than or equal to one tenth of the height of the burner in a direction of the central axis.

[0011] In a preferred example, a height of the protrusion portion is greater than two fifths of a height of the burner, and is less than three fifths of the height of the burner.

[0012] In a preferred example, a height of the perforated portion is greater than or equal to one half of a height of the burner, and is less than or equal to the height of the burner, and a height of the protrusion portion is less than the height of the perforated portion.

[0013] In a preferred example, a surface where the body portion is located is a projection surface, and an area of projection of the mesh holes in the protrusion portion onto the projection surface is less than an area of projection of the mesh holes in the body portion onto the projection surface.

[0014] In a preferred example, the surface area of the burner is increased by 5% to 50% compared with a surface area of a structure without a protrusion portion.

[0015] In a preferred example, the protrusion portion includes a peak portion; a height of the peak portion is less than a height of the protrusion portion, and the height of the peak portion is less than or equal to nine tenths of a height of the burner and is greater than one tenth of the height of the burner; and the protrusion portion between the body portion and the peak portion is obliquely arranged, and a portion of the protrusion portion is perpendicular to the protrusion portion in a direction oriented towards a user.

[0016] In a preferred example, the height of the peak portion is greater than two fifths of the height of the burner, and is less than three fifths of the height of the burner.

[0017] In a preferred example, the burner further includes a reinforcement ring, the reinforcement ring is fixed to the burner, the reinforcement ring is arranged around the ignition plate and is located inside the burner, and the reinforcement ring is fixed to a region below the protrusion portion.

[0018] In a preferred example, on a plane passing through a peak portion and perpendicular to the central axis, a distance between a point at the peak portion and the central axis is greater than a distance between a point at the body portion and the central axis; or a distance between a point at the peak portion and the central axis is less than a distance between a point at the body portion and the central axis.

[0019] In a preferred example, the gas valve includes a valve stem; the knob is fixed to the valve stem, and the knob is configured to control the gas valve to be opened or closed through the valve stem; and the ignition assembly includes an igniter, and the igniter is linked with the valve stem.

[0020] In a preferred example, the burner assembly includes a first mesh base and an indicator plate, and the ignition plate is fixed to the first mesh base; the indicator plate is located below the first mesh base, and the indicator plate has a valve closing position indicator, a maximum flame position indicator, and a minimum flame position indicator; and the gas valve is closed when the knob points to the valve closing position indicator, a flow rate of the gas valve is at its maximum when the knob points to the maximum flame position indicator, and the knob is configured to adjust the flow rate of the gas valve when rotated between the maximum flame position indicator and the minimum flame position indicator.

[0021] In a preferred example, the knob reaches the maximum flame position indicator by rotating 90 degrees from the valve closing position indicator toward the maximum flame position indicator, and the knob reaches the minimum flame position indicator by further rotating 125 degrees.

[0022] In a preferred example, when the knob rotates by 45 degrees to 90 degrees from the valve closing position indicator toward the maximum flame position indicator, the flow rate of the gas valve keeps at its maximum; when rotating by 65 degrees to 85 degrees, the knob drives the valve stem to come into contact with a switch of the igniter; and when rotating by 85 degrees to 90 degrees, the igniter completes ignition.

[0023] In a preferred example, the burner assembly further includes a small mesh and a second mesh base; an upper end of the small mesh is fixed to the first mesh base, a lower end of the small mesh is fixed to the second mesh base, and the indicator plate is located between the first mesh base and the second mesh base; and the igniter is located in a space defined by the indicator plate and the small mesh, and the gas valve is partially located in the space defined by the indicator plate and the small mesh.

[0024] In a preferred example, a length of the gas valve in a left-right direction is between 100 mm and 140 mm, a height of the gas valve in an up-down direction is between 80 mm and 110 mm, a width of the gas valve in a front-back direction is between 35 mm and 50 mm, and the height of the gas valve is less than a height of the small mesh.

[0025] The present disclosure has the following advantages: an area of the perforated portion becomes larger through a combustion mesh having the protrusion portion of the present disclosure, and the burner absorbs more heat of flames near the ignition plate, thus improving a thermal absorption effect of the burner. Due to a large area of the burner absorbing the flames of the ignition plate, an outward thermal radiation area of the burner is large, such that a thermal radiation effect of the burner is improved, and a heating effect of the heater is improved. The protrusion portion has a reinforcing function in the height direction of the burner, such that pressure resistance of the burner in the height direction is improved, and a structural strength of the burner is further improved. The height of the protrusion portion is set, an inclined curved surface can be formed at the combustion mesh, thermal radiation can be performed to the user in the direction perpendicular to the curved surface, and thermal efficiency is improved. Further, the combustion mesh is convenient in assembly and fixation. The reinforcement ring is arranged below the protrusion portion, a possibility of creep of the combustion mesh at a high temperature is reduced, and deformation of the combustion mesh is reduced. The height of the protrusion portion is set, the reinforcement ring is convenient in assembly, or the reinforcement ring and the combustion mesh are made more closely attached, such that stability of a connection between the reinforcement ring and the combustion mesh is improved.BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG. 1 is a schematic diagram of perspective assembly of a heater of the present disclosure.

[0027] FIG. 2 is a schematic structural diagram of a burner assembly of the present disclosure.

[0028] FIG. 3 is a schematic diagram of a partial section along line A-A in FIG. 2.

[0029] FIG. 4 is an enlarged view at portion D in FIG. 3

[0030] FIG. 5 is a schematic structural diagram of a combustion mesh of the present disclosure.

[0031] FIG. 6 is an enlarged view at portion E in FIG. 5.

[0032] FIG. 7 is a schematic diagram of a partial section along line B-B in FIG. 5.

[0033] FIG. 8 is a schematic diagram of a partial section along line C-C in FIG. 5.

[0034] FIG. 9 is a schematic structural diagram of a burner assembly without a combustion mesh of the present disclosure.

[0035] FIG. 10 is a schematic structural diagram of a valve assembly of the present disclosure.

[0036] FIG. 11 is a schematic structural diagram of a perspective view of a gas valve and an igniter of the present disclosure.

[0037] FIG. 12 is a schematic diagram of a burner according to another embodiment of the present disclosure.

[0038] FIG. 13 is an expanded view of a burner according to another embodiment of the present disclosure.

[0039] FIG. 14 is a schematic diagram of a burner according to yet another embodiment of the present disclosure.

[0040] In the figures:

[0041] 1. reflection cover; 2. burner assembly; 21. burner; 211. perforated portion; 2111. body portion; 2112. protrusion portion; 2113. peak portion; 212. connection portion; 213. reinforcement ring; 22. first mesh base; 23. small mesh; 25. ignition plate; 26. second mesh base; 3. support rod; 4. valve assembly; 41. gas valve; 411. valve stem; 42. knob; 43. ignition assembly; 431. igniter; 432. ignition needle; 5. base assembly; and L. central axis.DETAILED DESCRIPTIONS OF THE EMBODIMENTS

[0042] To make the above objectives, features and advantages of the present disclosure clearer and more comprehensible, specific embodiments of the present disclosure will be described below in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth for the convenience of full understanding of the present disclosure. However, the present disclosure can be implemented in many other manners different from those described herein, those of ordinary skill in the art can make similar improvements without departing from the connotation of the present disclosure, and the present disclosure will not be limited to specific examples disclosed below accordingly.

[0043] In the description of the examples of the present disclosure, it should be noted that unless otherwise explicitly specified and defined, the terms such as "connection" and "mount" should be understood in a broad sense, for example, "connection" may be a detachable connection, a non-detachable, a direct connection, or an indirect connection via an intermediate medium. In addition, "communication" may be direct communication or indirect communication via an intermediate medium. The "fix" indicates a mutual connection with a relative position relationship unchanged after the connection. The orientational terms in the examples of the present disclosure, such as "inside", "outside", "top", and "bottom" are merely directions with reference to the accompanying drawings. Thus, the orientational terms used are for better and clearer explanation and understanding of the examples of the present disclosure, rather than indicating or implying that the devices or elements referred to should have a specific orientation, or be constructed and operated in a specific orientation, and cannot be understood as limitation to the examples of the present disclosure accordingly.

[0044] In the examples of the present disclosure, the terms "first" and "second" are merely used for describing purposes and may not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, features defined with "first" and "second" can explicitly or implicitly include one or more of the features.

[0045] In the examples of the present disclosure, "and / or" merely describes an association between associated objects, and means three relationships. For example, A and / or B can mean A alone, both A and B, and B alone. Further, the character " / " herein generally indicates that the associated objects in the context have an "or" relationship.

[0046] Reference to "an example" or "some examples" described in the description means that a specific feature, structure, or characteristic described in connection with this example is included in one or more examples of the present disclosure. Thus, the phrases such as "in an example", "in some examples", "in some other examples", and "in still some other examples" in different places in the description do not necessarily all refer to the same example, but mean "one or more but not all examples" unless otherwise emphasized. The terms "comprise", "include", "have", "has", and their variations all mean "include but not limited to" unless otherwise specifically emphasized. Thus, the present disclosure is not limited by the specific examples disclosed below.

[0047] As shown in FIGS. 1-14, the present disclosure provides an outdoor gas heater. The outdoor gas heater includes a reflection cover 1, a burner assembly 2, a support rod 3 and a base assembly 5. A lower end of the support rod 3 is fixed to the base assembly 5, an upper end of the support rod 3 is fixed to the lower end of the burner assembly 2, and an upper end of the burner assembly 2 is fixed to the reflective cover 1, forming an integral assembly structure in which the base assembly 5 supports the support rod 3, the support rod 3 supports the burner assembly 2, and the burner assembly 2 supports the reflective cover 1.

[0048] The burner assembly 2 includes a burner 21, an ignition plate 25, a first mesh base 22, a second mesh base 26, a small mesh 23, a top cover, an indicator plate, and a fixation support. The burner 21 is a cylindrical structure with two open ends or a hollowed cylindrical structure, a lower end of the burner is fixed to the first mesh base 22 through screwing, an upper end of the burner is fixed to the top cover through welding, and the burner is integrally arranged around the ignition plate 25. The ignition plate 25 is located in the burner 21, and is fixed to the first mesh base 22. Ignition holes of the ignition plate are all in a projection range of a reinforcement ring 213, and the second mesh base 26 is located below the first mesh base 22. An upper end of the small mesh 23 is fixed to the first mesh base 22, and a lower end of the small mesh is fixed to the second mesh base 26, forming support for the first mesh base 22. The indicator plate is located between the first mesh base 22 and the second mesh base 26, and is fixed to the first mesh base 22 through the fixation support. The fixation is used to fix a valve assembly 4 at the same time, and improves structural stability. An end, farthest from the base assembly 5, of the support rod 3 is fixed to the second mesh base 26, and the entire burner assembly 2 is directly supported by the second mesh base 26.

[0049] In this example, a diameter of the small mesh 23 is 106 mm, and a height excluding upper and lower connection portions is 142 mm. A height of the indicator plate is 142 mm and is the same as the height of the small mesh 23. A longest distance between the indicator plate and the small mesh 23 in a same horizontal plane is 125 mm, providing a mounting space for the valve assembly 4.

[0050] The burner 21 includes a perforated portion 211, a connection portion 212, and a reinforcement ring 213. The perforated portion 211 accounts for a larger proportion of a total area of the burner 21 than the connection portion 212. In this example, an area ratio of the perforated portion 211 to the connection portion 212 is 20:3. The perforated portion 211 completely surrounds the ignition plate 25, and a projection of the ignition plate 25 completely falls into a projection of the perforated portion 211. Mesh holes of the perforated portion 211 are used for gas inflow into the burner 21, and may alternatively be used for gas outflow from the burner 21, such as entry of oxygen and outflow of hot air. In order to clearly reflect a position of the perforated portion 211 in the burner 21 and a specific structure of the mesh holes, a diameter of the mesh hole is expanded from actual 1 mm to 4 mm to 6 mm to 15 mm in the accompanying drawings of the description of the present disclosure. For example, original mesh holes of 2 mm are expanded to 8 mm or 12 mm. An illustration effect of the mesh holes becomes better. Those of ordinary skill in the art can choose mesh holes with different diameters according to actual needs.

[0051] The perforated portion 211 includes a body portion 2111 and a protrusion portion 2112. The body portion 2111 and the protrusion portion 2112 are different regions of the perforated portion 211. The protrusion portion 2112 has a protrusion structure relative to the body portion 2111, may protrude towards an inside of the burner 21, or an outside of the burner 21, and may also protrude partially towards the inside and partially towards the outside. In this example, the protrusion portion 2112 protrudes towards the outside of the burner 21 relative to the body portion 2111. Compared with a burner in the prior art, arrangement of the protrusion portion 2112 increases a surface area of the burner 21 by an increase rate of 5% to 50%, more specifically, 18% to 22% (such as 20%). A radiation area and a thermal absorption effect of the burner 21 during radiation to users are increased, and a heating effect is further improved. The mesh holes may be in the body portion 2111, or the protrusion portion 2112, or some mesh holes may be in the protrusion portion 2112 and some mesh holes may be in the body portion 2111. In addition, the protrusion portion 2112 has a reinforcing function in a height direction of the burner 21, such that pressure resistance of the burner 21 in the height direction is improved, and the structural strength of the burner 21 is further improved.

[0052] A machining technology of the burner 21 is that sheet metal is punched and welded end to end to form a cylindrical structure with two open ends. The protrusion portion 2112 may be punched before or after punching, or the protrusion portion 2112 may be punched by directly punching integral hollowed cylindrical sheet metal. The molded burner 21 has a central axis L, and the central axis L is a virtual axis. Regardless of a thickness of the burner 21, a distance between each point on the body portion 2111 and the central axis L is the same. Alternatively, on a same plane passing through the central axis L of the burner 21, each point of the body portion 2111 has the same distance from the central axis. For the protrusion portion 2112 formed protruding into the burner 21 along the body portion 2111, on a same plane passing through the central axis L, a distance between each point on the protrusion portion 2112 and the axis is less than a distance between each point on the body portion 2111 and the axis. For the protrusion portion 2112 formed protruding outside the burner 21 along the body portion 2111, on a same plane passing through the central axis L, a distance between each point on the protrusion portion 2112 and the axis is greater than a distance between each point on the body portion 2111 and the axis.

[0053] The protrusion portion 2112 includes a peak portion 2113, and the peak portion 2113 is a highest or lowest position of the protrusion portion 2112 relative to the central axis L of the burner 21. If the protrusion portion 2112 protrudes towards the inside of the burner 21, on a same plane perpendicular to the central axis L, a distance between a point on the peak portion 2113 and the axis is less than a distance between a point at another position of the burner 21 and the axis. If the protrusion portion 2112 protrudes towards the outside of the burner 21, on a same plane perpendicular to the central axis L, a distance between a point on the peak portion 2113 and the axis is greater than a distance between a point at another position of the burner 21 and the axis. A height of the peak portion 2113 is less than the height of the protrusion portion 2112, and the height of the peak portion 2113 is less than or equal to nine tenths of the height of the burner 21 and is greater than one tenth of the height of the burner 21. In some examples, the height of the peak portion 2113 is greater than two fifths of the height of the burner 21 and is less than three fifths of the height of the burner 21. The protrusion portion 2112 between the body portion 2111 and the peak portion 2113 is obliquely arranged, and a portion of the protrusion portion 2112 is perpendicular to the protrusion portion 2112 in a direction oriented towards a user. The protrusion portion 2112 may be in a shape of a strip, a hemisphere, or a quarter sphere. The strip-shaped protrusion portions may extend in the height direction (a length direction) of the burner 21 or in a circumferential direction of a sidewall of the burner 21. A plurality of protrusion portions 2112 extend in the height direction, and are arranged bilaterally, and a plurality of protrusions 2112 extend in a circumferential direction and are arranged up and down. The protrusion portions having the semi-spherical or quarter-spherical structure combine the advantages of the first two shapes. On the burner 21, a direction parallel to the central axis L is the height direction, a direction perpendicular to the central axis L is the width direction, and the width direction also includes the circumferential direction of the burner 21 perpendicular to the plane where the central axis L is located. In the height direction, an end, connected to the top cover, of the burner 21 is the upper end, and an end, connected to the first mesh base 22, of the burner is the lower end. The height of the protrusion portion 2112 is greater than or equal to one tenth of the height of the burner 21 and is less than or equal to nine tenths of the height of the burner 21. In some examples, the height of the protrusion portion 2112 is greater than two fifths of the height of the burner 21 and is less than three fifths of the height of the burner 21, the height of the perforated portion 211 is greater than or equal to one half of the height of the burner 21 and is less than or equal to the height of the burner 21, and the height of the protrusion portion 2112 is less than the height of the perforated portion 211. In this example, the height H1 of the burner 21 is 200 mm, the height H2 of the perforated portion 211 is 170 mm, and a height of the connection portion 212 at the top of the burner 21 and a height H3 of the connection portion 212 at the bottom of the burner are 15 mm. The height H4 of the protrusion portion 2112 is 114 mm, and the height H5 of the peak portion 2113 is 100 mm. That is, the height of the peak portion 2113 is one half of the height of the burner 21, the height of the perforated portion 211 is seventeen twentieths of the height of the burner 21, and the height of the protrusion portion 2112 is fifty-seven hundredths of the height of the burner 21. An excessively large height of the protrusion portion 2112 is not conducive to mounting and fixation of the burner 21. If the height of the protrusion portion is too small, an increased radiation area is limited, and the heating effect is not obviously improved. In the height direction, layout of the peak portion 2113 is in an upper middle portion of the burner 21. That is, a distance between the upper end of the peak portion 2113 and the upper end of the burner 21 is less than a distance between the lower end of the peak portion 2113 and the upper end of the burner 21. In this example, the distance between the upper end of the peak portion 2113 and the upper end of the burner 21 is 30 mm, and the distance between the lower end of the peak portion 2113 and the lower end of the burner 21 is 70 mm. Those of ordinary skill in the art can adjust this distance as needed.

[0054] In the width direction, at a joint between the protrusion portion 2112 and the body portion 2111, the width W1 of the protrusion portion 2112 itself is greater than the width W2 between adjacent protrusion portions 2112. In this example, a value of W1 is 30 mm, and a value of W2 is 12 mm. A surface where the body portion 2111 is located is a projection surface, and an area of projection of the mesh holes in the protrusion portion 2112 onto the projection surface is less than an area of projection of the mesh holes in the body portion 2111 onto the projection surface. Thus, the mesh holes in the protrusion portion 2112 are less affected by wind, and an outdoor wind resistance effect of the burner 21 is improved. The reinforcement ring 213 is fixed to the burner 21, is arranged around the ignition plate 25 and in the burner 21, and is fixed to a region below the protrusion portion 2112. The reinforcement ring 213 has mesh holes, and a diameter of the mesh hole is the same as the diameter of the mesh hole of the burner 21. The reinforcement ring is welded or integrally formed with the burner 21 (a thickness of the burner 21 at the reinforcement ring 213 is greater than a thickness of another portion in a case of integral forming). Any surface passing through the central axis L of the burner 21 is taken as the projection surface, a portion of or entire projection of the ignition plate 25 is in a projection of the reinforcement ring 213, and all ignition holes of the ignition plate 25 are in the projection of the reinforcement ring 213. The height of the reinforcement ring 213 in the height direction is 30 mm. When the heater works, gas flowing out of the ignition holes of the ignition plate 25 is ignited, the burner 21 near the ignition plate 25 is caused to be heated by flames, and a long-term high temperature is likely to cause creep deformation of the combustion mesh. The reinforcement ring 213 can reduce a possibility of deformation and prolong a service life of the burner 21. In this example, a horizontal plane where the lower end of the protrusion portion 2112 is located is P1, a horizontal plane where the upper end of the reinforcement ring 213 is located is P2, a horizontal plane where a center of the ignition holes is P3, and a horizontal plane where the lower end of the reinforcement ring 213 is located is P4. P1 is above P2, P2 is above P3, P3 is above P4, and a distance between P3 and P2 is greater than a distance between P3 and P4. The rising of the flame hot air flow makes the upper portion of the reinforcement ring 213 bear more heat, and the ignition holes are formed in a lower middle portion of the reinforcement ring 213 as a result. The protrusion portion 2112 formed by protruding towards outside of the burner 21 along the body portion 2111 has an inclined plane or an inclined curved surface between the peak portion 2113 and the body portion 2111. The direction perpendicular to the body portion 2111 is a horizontal direction, and the direction perpendicular to the inclined curved surface is an inclined direction. In this inclined direction, a downward direction is a direction of the user, such that heat radiation efficiency of the protrusion portion 2112 is improved. In addition, the flames sprayed from the ignition hole is upward, the inclined curved surface is located at an outer flame of the flame, and the curved surface has a higher temperature and a strong thermal radiation capability, further enhancing a heating effect. In some examples, the burner 21 may have no connection portion 212 structure. That is, the burner 21 has a perforated portion 211 structure, and is fixed through mesh hole screwing or welding when connected to the top cover or the first mesh base 22.

[0055] The heater further includes a valve assembly 4, and the valve assembly 4 is fixedly connected to the burner assembly 2, and includes a gas valve 41, a knob 42, and an ignition assembly 43. The gas valve 41 is partially in a space defined by an indicator plate and the small mesh 23. A length of the gas valve in a left-right direction is between 100 mm and 140 mm, a height of the gas valve in an up-down direction is between 80 mm and 110 mm, a width of the gas valve in a front-back direction is between 35 mm and 50 mm, and the height of the gas valve 41 is less than a height of the small mesh 23. In this example, the height of the gas valve 41 is 96 mm with a total length of 118 mm, and a length of a first portion (the portion in the space defined by the indicator plate and the small mesh 23) is less than 97 mm, satisfying a mounting space requirement. The gas valve 41 includes a valve stem 411, the knob 42 is fixed to the valve stem 411, and opening, closing and flow rate adjustment of the gas valve 41 are controlled by the valve stem 411. The ignition assembly 43 includes an igniter 431 and an ignition needle 432, the igniter 431 is linked with the valve stem 411, and the igniter 431 is fixed to the gas valve 41 or integrally formed with the gas valve 41. The igniter 431 is connected to the ignition needle 432 through a wire. The ignition needle 432 is fixed to the burner assembly 2. A current generated when the igniter 431 works flows to the ignition needle 432 along the wire, and an electric spark is generated between the ignition needle 432 and the ignition plate 25, thereby igniting the gas near the ignition plate 25.

[0056] A valve closing position indicator, a maximum flame position indicator, and a minimum flame position indicator are on the indicator plate, the knob 42 has pointing indicators, and the pointing indicators may point to the position indicators. The gas valve 41 is closed when the knob 42 points to the valve closing position indicator, a flow rate of the gas valve 41 is at its maximum when the knob points to the maximum flame position indicator, and the knob is configured to adjust the flow rate of the gas valve 41 when rotated between the maximum flame position indicator and the minimum flame position indicator. The knob 42 reaches the maximum flame position indicator by rotating 90 degrees from the valve closing position indicator toward the maximum flame position indicator, and reaches the minimum flame position indicator by further rotating 125 degrees. When the knob 42 rotates by 45 degrees to 90 degrees from the valve closing position indicator toward the maximum flame position indicator, the flow rate of the gas valve 41 keeps at its maximum. When rotating by 65 degrees to 85 degrees, the knob 42 drives the valve stem 411 to come into contact with a switch of the igniter 431. When rotating by 85 degrees to 90 degrees, the igniter 431 completes ignition. In this example, a specific operation of linkage ignition of the knob 42 and the igniter 431 is as follows: when the knob 42 is at the valve closing position, the user may press the knob 42 with one hand, and then rotate the knob from the valve closing position to the maximum flame position. When the knob 42 rotates 75 degrees counterclockwise from the valve closing position, the valve stem 411 comes into contact with the switch of the igniter 431, and the knob 42 is continuously rotated to the maximum flame position. Piezoelectric ignition of the igniter 431 may be completed (a principle of the igniter 431 may alternatively be changed to pulse ignition), the ignition needle 432 emits the electric spark, and the gas near the ignition plate 25 is ignited. When the knob 42 rotates between the valve closing position and the maximum flame position, the knob needs to be pressed and rotated simultaneously. This design can reduce the ignition of the knob 42 caused by accidental collision, safety of the heater is improved, and the risk of gas leakage is also reduced. In some other examples, ignition can also be performed by direct rotation without pressing. That is, when the knob 42 is in the valve closing position, the user directly rotates towards the maximum flame position. When the knob is rotated by 75 degrees, the valve stem 411 comes into contact with the switch of the igniter 431. When the rotation angle is between 75 degrees and 95 degrees, the knob 42 is pressed to drive the valve stem 411, and the switch of the igniter 431 is further driven to complete the piezoelectric ignition.

[0057] To sum up, an area of the perforated portion becomes larger through a combustion mesh having the protrusion portion of the present disclosure, and the burner absorbs more heat of flames near the ignition plate, thus improving a thermal absorption effect of the burner. Due to a large area of the burner absorbing the flames of the ignition plate, an outward thermal radiation area of the burner is large, such that a thermal radiation effect of the burner is improved, and a heating effect of the heater is improved. The protrusion portion has a reinforcing function in the height direction of the burner, such that pressure resistance of the burner in the height direction is improved, and a structural strength of the burner is further improved. The height of the protrusion portion is set, an inclined curved surface can be formed at the combustion mesh, thermal radiation can be performed to the user in the direction perpendicular to the curved surface, and thermal efficiency is improved. Further, the combustion mesh is convenient in assembly and fixation. The reinforcement ring is arranged below the protrusion portion, a possibility of creep of the combustion mesh at a high temperature is reduced, and deformation of the combustion mesh is reduced. The height of the protrusion portion is set, the reinforcement ring is convenient in assembly, or the reinforcement ring and the combustion mesh are made more closely attached, such that stability of a connection between the reinforcement ring and the combustion mesh is improved.

[0058] The present disclosure is not limited to explanation in the description and the embodiments, and other advantages and modifications can be readily implemented by those of ordinary skill in the art. Thus, the present disclosure is not limited to the specific details, representative devices and illustrated instances shown and described herein without departing from the spirit and scope of the general concept defined by the claims and their equivalents.

Examples

Embodiment Construction

[0042]To make the above objectives, features and advantages of the present disclosure clearer and more comprehensible, specific embodiments of the present disclosure will be described below in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth for the convenience of full understanding of the present disclosure. However, the present disclosure can be implemented in many other manners different from those described herein, those of ordinary skill in the art can make similar improvements without departing from the connotation of the present disclosure, and the present disclosure will not be limited to specific examples disclosed below accordingly.

[0043]In the description of the examples of the present disclosure, it should be noted that unless otherwise explicitly specified and defined, the terms such as "connection" and "mount" should be understood in a broad sense, for example, "connection" may be a detachable con...

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] The present application claims the benefit of Chinese Patent Application Nos. 202520469206.2 filed on Mar. 17, 2025, 202521120608.8 filed on Jun. 3, 2025 and 202521449353.X filed on Jul. 11, 2025. All the above are hereby incorporated by reference in their entirety.TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of heaters, and in particular, to an outdoor gas heater.BACKGROUND

[0003] Heaters supply heat to users through thermal convection and radiation generated during gas combustion. Generally, when the heater is used outdoors, heat is mainly transferred through thermal radiation due to influence of environment. The gas combustion takes place in a burner of the heater. For the sake of safety, the gas combustion is conducted in a combustion mesh, and most of the heat is supplied to the users through thermal radiation of the combustion mesh. However, since the combustion mesh is a regular plane or curved surface, a radiation area of the combustion mesh is limited, and the heating effect is limited. In addition, the heater is generally ignited by turning on a knob switch of a gas valve, and then the user presses the knob switch with one hand to keep gas flowing, while pressing an ignition device with the other hand to ignite the gas in the burner. The ignition process requires operation with two hands, resulting in inconvenient ignition.

[0004] In view of that, it is urgent to design an outdoor gas heater to solve one or more technical problems in the prior art.SUMMARY

[0005] A technical solution adopted by the present disclosure for solving the technical problems is as follows: an outdoor gas heater includes a base assembly, a support rod for supporting a burner assembly, and the burner assembly, where the base assembly directly supports the burner assembly or indirectly supports the burner assembly through the support rod, the burner assembly includes an ignition plate and a burner, and the burner has a protrusion portion for increasing a surface area of the burner; the heater further includes a valve assembly, and the valve assembly is fixedly connected to the burner assembly; the valve assembly includes a gas valve, a knob, and an ignition assembly; and the knob is configured to open or close the gas valve, gas flows to the ignition plate when the gas valve is opened, the knob is linked with the ignition assembly, and the ignition assembly is configured to emit an electric spark to the ignition plate.

[0006] In a preferred example, the burner includes a perforated portion and a connection portion for connection, and the protrusion portion is disposed on the perforated portion; and the perforated portion includes a body portion, and the protrusion portion protrudes from the body portion in a direction far away from the body portion.

[0007] In a preferred example, the perforated portion includes an inner surface and an outer surface; the protrusion portion protrudes from the body portion toward a side of the inner surface; or the protrusion portion protrudes from the body portion toward a side of the outer surface; or a portion of the protrusion portion protrudes from the body portion toward a side of the inner surface, and a portion of the protrusion portion protrudes from the body portion toward a side of the outer surface.

[0008] In a preferred example, the protrusion portion is in a shape of a strip, a hemisphere, or a quarter sphere, and the perforated portion has mesh holes; the mesh holes are formed in the body portion; or the mesh holes are formed in the protrusion portion; or some mesh holes are formed in the protrusion portion, and some mesh holes are formed in the body portion; or one of the mesh holes is partially formed in the protrusion portion, and is partially in the body portion.

[0009] In a preferred example, the burner has a central axis, and the protrusion portion located on the perforated portion surrounds the central axis; the protrusion portion at least partially extends in a length direction of the perforated portion; or the protrusion portion at least partially extends in a circumferential direction of the perforated portion.

[0010] In a preferred example, a height of the protrusion portion is less than or equal to nine tenths of a height of the burner, and is greater than or equal to one tenth of the height of the burner in a direction of the central axis.

[0011] In a preferred example, a height of the protrusion portion is greater than two fifths of a height of the burner, and is less than three fifths of the height of the burner.

[0012] In a preferred example, a height of the perforated portion is greater than or equal to one half of a height of the burner, and is less than or equal to the height of the burner, and a height of the protrusion portion is less than the height of the perforated portion.

[0013] In a preferred example, a surface where the body portion is located is a projection surface, and an area of projection of the mesh holes in the protrusion portion onto the projection surface is less than an area of projection of the mesh holes in the body portion onto the projection surface.

[0014] In a preferred example, the surface area of the burner is increased by 5% to 50% compared with a surface area of a structure without a protrusion portion.

[0015] In a preferred example, the protrusion portion includes a peak portion; a height of the peak portion is less than a height of the protrusion portion, and the height of the peak portion is less than or equal to nine tenths of a height of the burner and is greater than one tenth of the height of the burner; and the protrusion portion between the body portion and the peak portion is obliquely arranged, and a portion of the protrusion portion is perpendicular to the protrusion portion in a direction oriented towards a user.

[0016] In a preferred example, the height of the peak portion is greater than two fifths of the height of the burner, and is less than three fifths of the height of the burner.

[0017] In a preferred example, the burner further includes a reinforcement ring, the reinforcement ring is fixed to the burner, the reinforcement ring is arranged around the ignition plate and is located inside the burner, and the reinforcement ring is fixed to a region below the protrusion portion.

[0018] In a preferred example, on a plane passing through a peak portion and perpendicular to the central axis, a distance between a point at the peak portion and the central axis is greater than a distance between a point at the body portion and the central axis; or a distance between a point at the peak portion and the central axis is less than a distance between a point at the body portion and the central axis.

[0019] In a preferred example, the gas valve includes a valve stem; the knob is fixed to the valve stem, and the knob is configured to control the gas valve to be opened or closed through the valve stem; and the ignition assembly includes an igniter, and the igniter is linked with the valve stem.

[0020] In a preferred example, the burner assembly includes a first mesh base and an indicator plate, and the ignition plate is fixed to the first mesh base; the indicator plate is located below the first mesh base, and the indicator plate has a valve closing position indicator, a maximum flame position indicator, and a minimum flame position indicator; and the gas valve is closed when the knob points to the valve closing position indicator, a flow rate of the gas valve is at its maximum when the knob points to the maximum flame position indicator, and the knob is configured to adjust the flow rate of the gas valve when rotated between the maximum flame position indicator and the minimum flame position indicator.

[0021] In a preferred example, the knob reaches the maximum flame position indicator by rotating 90 degrees from the valve closing position indicator toward the maximum flame position indicator, and the knob reaches the minimum flame position indicator by further rotating 125 degrees.

[0022] In a preferred example, when the knob rotates by 45 degrees to 90 degrees from the valve closing position indicator toward the maximum flame position indicator, the flow rate of the gas valve keeps at its maximum; when rotating by 65 degrees to 85 degrees, the knob drives the valve stem to come into contact with a switch of the igniter; and when rotating by 85 degrees to 90 degrees, the igniter completes ignition.

[0023] In a preferred example, the burner assembly further includes a small mesh and a second mesh base; an upper end of the small mesh is fixed to the first mesh base, a lower end of the small mesh is fixed to the second mesh base, and the indicator plate is located between the first mesh base and the second mesh base; and the igniter is located in a space defined by the indicator plate and the small mesh, and the gas valve is partially located in the space defined by the indicator plate and the small mesh.

[0024] In a preferred example, a length of the gas valve in a left-right direction is between 100 mm and 140 mm, a height of the gas valve in an up-down direction is between 80 mm and 110 mm, a width of the gas valve in a front-back direction is between 35 mm and 50 mm, and the height of the gas valve is less than a height of the small mesh.

[0025] The present disclosure has the following advantages: an area of the perforated portion becomes larger through a combustion mesh having the protrusion portion of the present disclosure, and the burner absorbs more heat of flames near the ignition plate, thus improving a thermal absorption effect of the burner. Due to a large area of the burner absorbing the flames of the ignition plate, an outward thermal radiation area of the burner is large, such that a thermal radiation effect of the burner is improved, and a heating effect of the heater is improved. The protrusion portion has a reinforcing function in the height direction of the burner, such that pressure resistance of the burner in the height direction is improved, and a structural strength of the burner is further improved. The height of the protrusion portion is set, an inclined curved surface can be formed at the combustion mesh, thermal radiation can be performed to the user in the direction perpendicular to the curved surface, and thermal efficiency is improved. Further, the combustion mesh is convenient in assembly and fixation. The reinforcement ring is arranged below the protrusion portion, a possibility of creep of the combustion mesh at a high temperature is reduced, and deformation of the combustion mesh is reduced. The height of the protrusion portion is set, the reinforcement ring is convenient in assembly, or the reinforcement ring and the combustion mesh are made more closely attached, such that stability of a connection between the reinforcement ring and the combustion mesh is improved.BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG. 1 is a schematic diagram of perspective assembly of a heater of the present disclosure.

[0027] FIG. 2 is a schematic structural diagram of a burner assembly of the present disclosure.

[0028] FIG. 3 is a schematic diagram of a partial section along line A-A in FIG. 2.

[0029] FIG. 4 is an enlarged view at portion D in FIG. 3

[0030] FIG. 5 is a schematic structural diagram of a combustion mesh of the present disclosure.

[0031] FIG. 6 is an enlarged view at portion E in FIG. 5.

[0032] FIG. 7 is a schematic diagram of a partial section along line B-B in FIG. 5.

[0033] FIG. 8 is a schematic diagram of a partial section along line C-C in FIG. 5.

[0034] FIG. 9 is a schematic structural diagram of a burner assembly without a combustion mesh of the present disclosure.

[0035] FIG. 10 is a schematic structural diagram of a valve assembly of the present disclosure.

[0036] FIG. 11 is a schematic structural diagram of a perspective view of a gas valve and an igniter of the present disclosure.

[0037] FIG. 12 is a schematic diagram of a burner according to another embodiment of the present disclosure.

[0038] FIG. 13 is an expanded view of a burner according to another embodiment of the present disclosure.

[0039] FIG. 14 is a schematic diagram of a burner according to yet another embodiment of the present disclosure.

[0040] In the figures:

[0041] 1. reflection cover; 2. burner assembly; 21. burner; 211. perforated portion; 2111. body portion; 2112. protrusion portion; 2113. peak portion; 212. connection portion; 213. reinforcement ring; 22. first mesh base; 23. small mesh; 25. ignition plate; 26. second mesh base; 3. support rod; 4. valve assembly; 41. gas valve; 411. valve stem; 42. knob; 43. ignition assembly; 431. igniter; 432. ignition needle; 5. base assembly; and L. central axis.DETAILED DESCRIPTIONS OF THE EMBODIMENTS

[0042] To make the above objectives, features and advantages of the present disclosure clearer and more comprehensible, specific embodiments of the present disclosure will be described below in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth for the convenience of full understanding of the present disclosure. However, the present disclosure can be implemented in many other manners different from those described herein, those of ordinary skill in the art can make similar improvements without departing from the connotation of the present disclosure, and the present disclosure will not be limited to specific examples disclosed below accordingly.

[0043] In the description of the examples of the present disclosure, it should be noted that unless otherwise explicitly specified and defined, the terms such as "connection" and "mount" should be understood in a broad sense, for example, "connection" may be a detachable connection, a non-detachable, a direct connection, or an indirect connection via an intermediate medium. In addition, "communication" may be direct communication or indirect communication via an intermediate medium. The "fix" indicates a mutual connection with a relative position relationship unchanged after the connection. The orientational terms in the examples of the present disclosure, such as "inside", "outside", "top", and "bottom" are merely directions with reference to the accompanying drawings. Thus, the orientational terms used are for better and clearer explanation and understanding of the examples of the present disclosure, rather than indicating or implying that the devices or elements referred to should have a specific orientation, or be constructed and operated in a specific orientation, and cannot be understood as limitation to the examples of the present disclosure accordingly.

[0044] In the examples of the present disclosure, the terms "first" and "second" are merely used for describing purposes and may not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, features defined with "first" and "second" can explicitly or implicitly include one or more of the features.

[0045] In the examples of the present disclosure, "and / or" merely describes an association between associated objects, and means three relationships. For example, A and / or B can mean A alone, both A and B, and B alone. Further, the character " / " herein generally indicates that the associated objects in the context have an "or" relationship.

[0046] Reference to "an example" or "some examples" described in the description means that a specific feature, structure, or characteristic described in connection with this example is included in one or more examples of the present disclosure. Thus, the phrases such as "in an example", "in some examples", "in some other examples", and "in still some other examples" in different places in the description do not necessarily all refer to the same example, but mean "one or more but not all examples" unless otherwise emphasized. The terms "comprise", "include", "have", "has", and their variations all mean "include but not limited to" unless otherwise specifically emphasized. Thus, the present disclosure is not limited by the specific examples disclosed below.

[0047] As shown in FIGS. 1-14, the present disclosure provides an outdoor gas heater. The outdoor gas heater includes a reflection cover 1, a burner assembly 2, a support rod 3 and a base assembly 5. A lower end of the support rod 3 is fixed to the base assembly 5, an upper end of the support rod 3 is fixed to the lower end of the burner assembly 2, and an upper end of the burner assembly 2 is fixed to the reflective cover 1, forming an integral assembly structure in which the base assembly 5 supports the support rod 3, the support rod 3 supports the burner assembly 2, and the burner assembly 2 supports the reflective cover 1.

[0048] The burner assembly 2 includes a burner 21, an ignition plate 25, a first mesh base 22, a second mesh base 26, a small mesh 23, a top cover, an indicator plate, and a fixation support. The burner 21 is a cylindrical structure with two open ends or a hollowed cylindrical structure, a lower end of the burner is fixed to the first mesh base 22 through screwing, an upper end of the burner is fixed to the top cover through welding, and the burner is integrally arranged around the ignition plate 25. The ignition plate 25 is located in the burner 21, and is fixed to the first mesh base 22. Ignition holes of the ignition plate are all in a projection range of a reinforcement ring 213, and the second mesh base 26 is located below the first mesh base 22. An upper end of the small mesh 23 is fixed to the first mesh base 22, and a lower end of the small mesh is fixed to the second mesh base 26, forming support for the first mesh base 22. The indicator plate is located between the first mesh base 22 and the second mesh base 26, and is fixed to the first mesh base 22 through the fixation support. The fixation is used to fix a valve assembly 4 at the same time, and improves structural stability. An end, farthest from the base assembly 5, of the support rod 3 is fixed to the second mesh base 26, and the entire burner assembly 2 is directly supported by the second mesh base 26.

[0049] In this example, a diameter of the small mesh 23 is 106 mm, and a height excluding upper and lower connection portions is 142 mm. A height of the indicator plate is 142 mm and is the same as the height of the small mesh 23. A longest distance between the indicator plate and the small mesh 23 in a same horizontal plane is 125 mm, providing a mounting space for the valve assembly 4.

[0050] The burner 21 includes a perforated portion 211, a connection portion 212, and a reinforcement ring 213. The perforated portion 211 accounts for a larger proportion of a total area of the burner 21 than the connection portion 212. In this example, an area ratio of the perforated portion 211 to the connection portion 212 is 20:3. The perforated portion 211 completely surrounds the ignition plate 25, and a projection of the ignition plate 25 completely falls into a projection of the perforated portion 211. Mesh holes of the perforated portion 211 are used for gas inflow into the burner 21, and may alternatively be used for gas outflow from the burner 21, such as entry of oxygen and outflow of hot air. In order to clearly reflect a position of the perforated portion 211 in the burner 21 and a specific structure of the mesh holes, a diameter of the mesh hole is expanded from actual 1 mm to 4 mm to 6 mm to 15 mm in the accompanying drawings of the description of the present disclosure. For example, original mesh holes of 2 mm are expanded to 8 mm or 12 mm. An illustration effect of the mesh holes becomes better. Those of ordinary skill in the art can choose mesh holes with different diameters according to actual needs.

[0051] The perforated portion 211 includes a body portion 2111 and a protrusion portion 2112. The body portion 2111 and the protrusion portion 2112 are different regions of the perforated portion 211. The protrusion portion 2112 has a protrusion structure relative to the body portion 2111, may protrude towards an inside of the burner 21, or an outside of the burner 21, and may also protrude partially towards the inside and partially towards the outside. In this example, the protrusion portion 2112 protrudes towards the outside of the burner 21 relative to the body portion 2111. Compared with a burner in the prior art, arrangement of the protrusion portion 2112 increases a surface area of the burner 21 by an increase rate of 5% to 50%, more specifically, 18% to 22% (such as 20%). A radiation area and a thermal absorption effect of the burner 21 during radiation to users are increased, and a heating effect is further improved. The mesh holes may be in the body portion 2111, or the protrusion portion 2112, or some mesh holes may be in the protrusion portion 2112 and some mesh holes may be in the body portion 2111. In addition, the protrusion portion 2112 has a reinforcing function in a height direction of the burner 21, such that pressure resistance of the burner 21 in the height direction is improved, and the structural strength of the burner 21 is further improved.

[0052] A machining technology of the burner 21 is that sheet metal is punched and welded end to end to form a cylindrical structure with two open ends. The protrusion portion 2112 may be punched before or after punching, or the protrusion portion 2112 may be punched by directly punching integral hollowed cylindrical sheet metal. The molded burner 21 has a central axis L, and the central axis L is a virtual axis. Regardless of a thickness of the burner 21, a distance between each point on the body portion 2111 and the central axis L is the same. Alternatively, on a same plane passing through the central axis L of the burner 21, each point of the body portion 2111 has the same distance from the central axis. For the protrusion portion 2112 formed protruding into the burner 21 along the body portion 2111, on a same plane passing through the central axis L, a distance between each point on the protrusion portion 2112 and the axis is less than a distance between each point on the body portion 2111 and the axis. For the protrusion portion 2112 formed protruding outside the burner 21 along the body portion 2111, on a same plane passing through the central axis L, a distance between each point on the protrusion portion 2112 and the axis is greater than a distance between each point on the body portion 2111 and the axis.

[0053] The protrusion portion 2112 includes a peak portion 2113, and the peak portion 2113 is a highest or lowest position of the protrusion portion 2112 relative to the central axis L of the burner 21. If the protrusion portion 2112 protrudes towards the inside of the burner 21, on a same plane perpendicular to the central axis L, a distance between a point on the peak portion 2113 and the axis is less than a distance between a point at another position of the burner 21 and the axis. If the protrusion portion 2112 protrudes towards the outside of the burner 21, on a same plane perpendicular to the central axis L, a distance between a point on the peak portion 2113 and the axis is greater than a distance between a point at another position of the burner 21 and the axis. A height of the peak portion 2113 is less than the height of the protrusion portion 2112, and the height of the peak portion 2113 is less than or equal to nine tenths of the height of the burner 21 and is greater than one tenth of the height of the burner 21. In some examples, the height of the peak portion 2113 is greater than two fifths of the height of the burner 21 and is less than three fifths of the height of the burner 21. The protrusion portion 2112 between the body portion 2111 and the peak portion 2113 is obliquely arranged, and a portion of the protrusion portion 2112 is perpendicular to the protrusion portion 2112 in a direction oriented towards a user. The protrusion portion 2112 may be in a shape of a strip, a hemisphere, or a quarter sphere. The strip-shaped protrusion portions may extend in the height direction (a length direction) of the burner 21 or in a circumferential direction of a sidewall of the burner 21. A plurality of protrusion portions 2112 extend in the height direction, and are arranged bilaterally, and a plurality of protrusions 2112 extend in a circumferential direction and are arranged up and down. The protrusion portions having the semi-spherical or quarter-spherical structure combine the advantages of the first two shapes. On the burner 21, a direction parallel to the central axis L is the height direction, a direction perpendicular to the central axis L is the width direction, and the width direction also includes the circumferential direction of the burner 21 perpendicular to the plane where the central axis L is located. In the height direction, an end, connected to the top cover, of the burner 21 is the upper end, and an end, connected to the first mesh base 22, of the burner is the lower end. The height of the protrusion portion 2112 is greater than or equal to one tenth of the height of the burner 21 and is less than or equal to nine tenths of the height of the burner 21. In some examples, the height of the protrusion portion 2112 is greater than two fifths of the height of the burner 21 and is less than three fifths of the height of the burner 21, the height of the perforated portion 211 is greater than or equal to one half of the height of the burner 21 and is less than or equal to the height of the burner 21, and the height of the protrusion portion 2112 is less than the height of the perforated portion 211. In this example, the height H1 of the burner 21 is 200 mm, the height H2 of the perforated portion 211 is 170 mm, and a height of the connection portion 212 at the top of the burner 21 and a height H3 of the connection portion 212 at the bottom of the burner are 15 mm. The height H4 of the protrusion portion 2112 is 114 mm, and the height H5 of the peak portion 2113 is 100 mm. That is, the height of the peak portion 2113 is one half of the height of the burner 21, the height of the perforated portion 211 is seventeen twentieths of the height of the burner 21, and the height of the protrusion portion 2112 is fifty-seven hundredths of the height of the burner 21. An excessively large height of the protrusion portion 2112 is not conducive to mounting and fixation of the burner 21. If the height of the protrusion portion is too small, an increased radiation area is limited, and the heating effect is not obviously improved. In the height direction, layout of the peak portion 2113 is in an upper middle portion of the burner 21. That is, a distance between the upper end of the peak portion 2113 and the upper end of the burner 21 is less than a distance between the lower end of the peak portion 2113 and the upper end of the burner 21. In this example, the distance between the upper end of the peak portion 2113 and the upper end of the burner 21 is 30 mm, and the distance between the lower end of the peak portion 2113 and the lower end of the burner 21 is 70 mm. Those of ordinary skill in the art can adjust this distance as needed.

[0054] In the width direction, at a joint between the protrusion portion 2112 and the body portion 2111, the width W1 of the protrusion portion 2112 itself is greater than the width W2 between adjacent protrusion portions 2112. In this example, a value of W1 is 30 mm, and a value of W2 is 12 mm. A surface where the body portion 2111 is located is a projection surface, and an area of projection of the mesh holes in the protrusion portion 2112 onto the projection surface is less than an area of projection of the mesh holes in the body portion 2111 onto the projection surface. Thus, the mesh holes in the protrusion portion 2112 are less affected by wind, and an outdoor wind resistance effect of the burner 21 is improved. The reinforcement ring 213 is fixed to the burner 21, is arranged around the ignition plate 25 and in the burner 21, and is fixed to a region below the protrusion portion 2112. The reinforcement ring 213 has mesh holes, and a diameter of the mesh hole is the same as the diameter of the mesh hole of the burner 21. The reinforcement ring is welded or integrally formed with the burner 21 (a thickness of the burner 21 at the reinforcement ring 213 is greater than a thickness of another portion in a case of integral forming). Any surface passing through the central axis L of the burner 21 is taken as the projection surface, a portion of or entire projection of the ignition plate 25 is in a projection of the reinforcement ring 213, and all ignition holes of the ignition plate 25 are in the projection of the reinforcement ring 213. The height of the reinforcement ring 213 in the height direction is 30 mm. When the heater works, gas flowing out of the ignition holes of the ignition plate 25 is ignited, the burner 21 near the ignition plate 25 is caused to be heated by flames, and a long-term high temperature is likely to cause creep deformation of the combustion mesh. The reinforcement ring 213 can reduce a possibility of deformation and prolong a service life of the burner 21. In this example, a horizontal plane where the lower end of the protrusion portion 2112 is located is P1, a horizontal plane where the upper end of the reinforcement ring 213 is located is P2, a horizontal plane where a center of the ignition holes is P3, and a horizontal plane where the lower end of the reinforcement ring 213 is located is P4. P1 is above P2, P2 is above P3, P3 is above P4, and a distance between P3 and P2 is greater than a distance between P3 and P4. The rising of the flame hot air flow makes the upper portion of the reinforcement ring 213 bear more heat, and the ignition holes are formed in a lower middle portion of the reinforcement ring 213 as a result. The protrusion portion 2112 formed by protruding towards outside of the burner 21 along the body portion 2111 has an inclined plane or an inclined curved surface between the peak portion 2113 and the body portion 2111. The direction perpendicular to the body portion 2111 is a horizontal direction, and the direction perpendicular to the inclined curved surface is an inclined direction. In this inclined direction, a downward direction is a direction of the user, such that heat radiation efficiency of the protrusion portion 2112 is improved. In addition, the flames sprayed from the ignition hole is upward, the inclined curved surface is located at an outer flame of the flame, and the curved surface has a higher temperature and a strong thermal radiation capability, further enhancing a heating effect. In some examples, the burner 21 may have no connection portion 212 structure. That is, the burner 21 has a perforated portion 211 structure, and is fixed through mesh hole screwing or welding when connected to the top cover or the first mesh base 22.

[0055] The heater further includes a valve assembly 4, and the valve assembly 4 is fixedly connected to the burner assembly 2, and includes a gas valve 41, a knob 42, and an ignition assembly 43. The gas valve 41 is partially in a space defined by an indicator plate and the small mesh 23. A length of the gas valve in a left-right direction is between 100 mm and 140 mm, a height of the gas valve in an up-down direction is between 80 mm and 110 mm, a width of the gas valve in a front-back direction is between 35 mm and 50 mm, and the height of the gas valve 41 is less than a height of the small mesh 23. In this example, the height of the gas valve 41 is 96 mm with a total length of 118 mm, and a length of a first portion (the portion in the space defined by the indicator plate and the small mesh 23) is less than 97 mm, satisfying a mounting space requirement. The gas valve 41 includes a valve stem 411, the knob 42 is fixed to the valve stem 411, and opening, closing and flow rate adjustment of the gas valve 41 are controlled by the valve stem 411. The ignition assembly 43 includes an igniter 431 and an ignition needle 432, the igniter 431 is linked with the valve stem 411, and the igniter 431 is fixed to the gas valve 41 or integrally formed with the gas valve 41. The igniter 431 is connected to the ignition needle 432 through a wire. The ignition needle 432 is fixed to the burner assembly 2. A current generated when the igniter 431 works flows to the ignition needle 432 along the wire, and an electric spark is generated between the ignition needle 432 and the ignition plate 25, thereby igniting the gas near the ignition plate 25.

[0056] A valve closing position indicator, a maximum flame position indicator, and a minimum flame position indicator are on the indicator plate, the knob 42 has pointing indicators, and the pointing indicators may point to the position indicators. The gas valve 41 is closed when the knob 42 points to the valve closing position indicator, a flow rate of the gas valve 41 is at its maximum when the knob points to the maximum flame position indicator, and the knob is configured to adjust the flow rate of the gas valve 41 when rotated between the maximum flame position indicator and the minimum flame position indicator. The knob 42 reaches the maximum flame position indicator by rotating 90 degrees from the valve closing position indicator toward the maximum flame position indicator, and reaches the minimum flame position indicator by further rotating 125 degrees. When the knob 42 rotates by 45 degrees to 90 degrees from the valve closing position indicator toward the maximum flame position indicator, the flow rate of the gas valve 41 keeps at its maximum. When rotating by 65 degrees to 85 degrees, the knob 42 drives the valve stem 411 to come into contact with a switch of the igniter 431. When rotating by 85 degrees to 90 degrees, the igniter 431 completes ignition. In this example, a specific operation of linkage ignition of the knob 42 and the igniter 431 is as follows: when the knob 42 is at the valve closing position, the user may press the knob 42 with one hand, and then rotate the knob from the valve closing position to the maximum flame position. When the knob 42 rotates 75 degrees counterclockwise from the valve closing position, the valve stem 411 comes into contact with the switch of the igniter 431, and the knob 42 is continuously rotated to the maximum flame position. Piezoelectric ignition of the igniter 431 may be completed (a principle of the igniter 431 may alternatively be changed to pulse ignition), the ignition needle 432 emits the electric spark, and the gas near the ignition plate 25 is ignited. When the knob 42 rotates between the valve closing position and the maximum flame position, the knob needs to be pressed and rotated simultaneously. This design can reduce the ignition of the knob 42 caused by accidental collision, safety of the heater is improved, and the risk of gas leakage is also reduced. In some other examples, ignition can also be performed by direct rotation without pressing. That is, when the knob 42 is in the valve closing position, the user directly rotates towards the maximum flame position. When the knob is rotated by 75 degrees, the valve stem 411 comes into contact with the switch of the igniter 431. When the rotation angle is between 75 degrees and 95 degrees, the knob 42 is pressed to drive the valve stem 411, and the switch of the igniter 431 is further driven to complete the piezoelectric ignition.

[0057] To sum up, an area of the perforated portion becomes larger through a combustion mesh having the protrusion portion of the present disclosure, and the burner absorbs more heat of flames near the ignition plate, thus improving a thermal absorption effect of the burner. Due to a large area of the burner absorbing the flames of the ignition plate, an outward thermal radiation area of the burner is large, such that a thermal radiation effect of the burner is improved, and a heating effect of the heater is improved. The protrusion portion has a reinforcing function in the height direction of the burner, such that pressure resistance of the burner in the height direction is improved, and a structural strength of the burner is further improved. The height of the protrusion portion is set, an inclined curved surface can be formed at the combustion mesh, thermal radiation can be performed to the user in the direction perpendicular to the curved surface, and thermal efficiency is improved. Further, the combustion mesh is convenient in assembly and fixation. The reinforcement ring is arranged below the protrusion portion, a possibility of creep of the combustion mesh at a high temperature is reduced, and deformation of the combustion mesh is reduced. The height of the protrusion portion is set, the reinforcement ring is convenient in assembly, or the reinforcement ring and the combustion mesh are made more closely attached, such that stability of a connection between the reinforcement ring and the combustion mesh is improved.

[0058] The present disclosure is not limited to explanation in the description and the embodiments, and other advantages and modifications can be readily implemented by those of ordinary skill in the art. Thus, the present disclosure is not limited to the specific details, representative devices and illustrated instances shown and described herein without departing from the spirit and scope of the general concept defined by the claims and their equivalents.

Examples

Embodiment Construction

[0042]To make the above objectives, features and advantages of the present disclosure clearer and more comprehensible, specific embodiments of the present disclosure will be described below in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth for the convenience of full understanding of the present disclosure. However, the present disclosure can be implemented in many other manners different from those described herein, those of ordinary skill in the art can make similar improvements without departing from the connotation of the present disclosure, and the present disclosure will not be limited to specific examples disclosed below accordingly.

[0043]In the description of the examples of the present disclosure, it should be noted that unless otherwise explicitly specified and defined, the terms such as "connection" and "mount" should be understood in a broad sense, for example, "connection" may be a detachable con...

Claims

1. An outdoor gas heater, comprising a base assembly, a support rod for supporting a burner assembly, and the burner assembly, wherein the base assembly directly supports the burner assembly or indirectly supports the burner assembly through the support rod; the burner assembly comprises an ignition plate and a burner, and the burner has a protrusion portion for increasing a surface area of the burner; the heater further comprises a valve assembly, and the valve assembly is fixedly connected to the burner assembly; the valve assembly comprises a gas valve, a knob, and an ignition assembly; and the knob is configured to open or close the gas valve, gas flows to the ignition plate when the gas valve is opened, the knob is linked with the ignition assembly, and the ignition assembly is configured to emit an electric spark to the ignition plate.

2. The outdoor gas heater according to claim 1, wherein the burner comprises a perforated portion and a connection portion for connection, and the protrusion portion is disposed on the perforated portion; and the perforated portion comprises a body portion, and the protrusion portion protrudes from the body portion in a direction far away from the body portion.

3. The outdoor gas heater according to claim 2, wherein the perforated portion comprises an inner surface and an outer surface; the protrusion portion protrudes from the body portion toward a side of the inner surface; or the protrusion portion protrudes from the body portion toward a side of the outer surface; or a portion of the protrusion portion protrudes from the body portion toward a side of the inner surface, and a portion of the protrusion portion protrudes from the body portion toward a side of the outer surface.

4. The outdoor gas heater according to claim 3, wherein the protrusion portion is in a shape of a strip, a hemisphere, or a quarter sphere, and the perforated portion has mesh holes; the mesh holes are formed in the body portion; or the mesh holes are formed in the protrusion portion; or some of the mesh holes are formed in the protrusion portion, and some of the mesh holes are formed in the body portion; or one of the mesh holes is partially formed in the protrusion portion, and is partially formed in the body portion.

5. The outdoor gas heater according to claim 4, wherein the burner has a central axis, and the protrusion portion located on the perforated portion surrounds the central axis; the protrusion portion at least partially extends in a length direction of the perforated portion; or the protrusion portion at least partially extends in a circumferential direction of the perforated portion.

6. The outdoor gas heater according to claim 5, wherein a height of the protrusion portion is less than or equal to nine tenths of a height of the burner, and is greater than or equal to one tenth of the height of the burner in a direction of the central axis.

7. The outdoor gas heater according to claim 2, wherein a height of the protrusion portion is greater than two fifths of a height of the burner, and is less than three fifths of the height of the burner.

8. The outdoor gas heater according to claim 2, wherein a height of the perforated portion is greater than or equal to one half of a height of the burner, and is less than or equal to the height of the burner, and a height of the protrusion portion is less than the height of the perforated portion.

9. The outdoor gas heater according to claim 4, wherein a surface where the body portion is located is a projection surface, and an area of projection of the mesh holes in the protrusion portion projected onto the projection surface is less than an area of projection of the mesh holes in the body portion projected onto the projection surface.

10. The outdoor gas heater according to claim 1, wherein the surface area of the burner is increased by 5% to 50% compared with a surface area of a structure without a protrusion portion.

11. The outdoor gas heater according to claim 5, wherein the protrusion portion comprises a peak portion; a height of the peak portion is less than a height of the protrusion portion, and the height of the peak portion is less than or equal to nine tenths of a height of the burner and is greater than one tenth of the height of the burner; and the protrusion portion between the body portion and the peak portion is obliquely arranged, and a portion of the protrusion portion is perpendicular to the protrusion portion in a direction oriented towards a user.

12. The outdoor gas heater according to claim 11, wherein the height of the peak portion is greater than two fifths of the height of the burner, and is less than three fifths of the height of the burner.

13. The outdoor gas heater according to claim 2, wherein the burner further comprises a reinforcement ring, the reinforcement ring is fixed to the burner, the reinforcement ring is arranged around the ignition plate and is located inside the burner, and the reinforcement ring is fixed to a region below the protrusion portion.

14. The outdoor gas heater according to claim 5, wherein on a plane passing through a peak portion and perpendicular to the central axis, a distance between a point at the peak portion and the central axis is greater than a distance between a point at the body portion and the central axis; or a distance between a point at the peak portion and the central axis is less than a distance between a point at the body portion and the central axis.

15. The outdoor gas heater according to claim 1, wherein the gas valve comprises a valve stem; the knob is fixed to the valve stem, and the knob is configured to control the gas valve to be opened or closed through the valve stem; and the ignition assembly comprises an igniter, and the igniter is linked with the valve stem.

16. The outdoor gas heater according to claim 15, wherein the burner assembly comprises a first mesh base and an indicator plate, and the ignition plate is fixed to the first mesh base; the indicator plate is located below the first mesh base, and the indicator plate has a valve closing position indicator, a maximum flame position indicator, and a minimum flame position indicator; and the gas valve is closed when the knob points to the valve closing position indicator, a flow rate of the gas valve is maximum when the knob points to the maximum flame position indicator, and the knob is configured to adjust the flow rate of the gas valve when rotated between the maximum flame position indicator and the minimum flame position indicator.

17. The outdoor gas heater according to claim 16, wherein the knob reaches the maximum flame position indicator by rotating 90 degrees from the valve closing position indicator toward the maximum flame position indicator, and the knob reaches the minimum flame position indicator by further rotating 125 degrees.

18. The outdoor gas heater according to claim 17, wherein when the knob rotates by 45 degrees to 90 degrees from the valve closing position indicator toward the maximum flame position indicator, the flow rate of the gas valve remains at a maximum value; when rotating by 65 degrees to 85 degrees, the knob drives the valve stem to come into contact with a switch of the igniter; and when rotating by 85 degrees to 90 degrees, the igniter completes ignition.

19. The outdoor gas heater according to claim 16, wherein the burner assembly further comprises a small mesh and a second mesh base; an upper end of the small mesh is fixed to the first mesh base, a lower end of the small mesh is fixed to the second mesh base, and the indicator plate is located between the first mesh base and the second mesh base; and the igniter is located in a space defined by the indicator plate and the small mesh, and the gas valve is partially located in the space defined by the indicator plate and the small mesh.

20. The outdoor gas heater according to claim 19, wherein a length of the gas valve in a left-right direction is between 100 mm and 140 mm, a height of the gas valve in an up-down direction is between 80 mm and 110 mm, a width of the gas valve in a front-back direction is between 35 mm and 50 mm, and the height of the gas valve is less than a height of the small mesh.

Images