A burner

Abstract

The present invention relates to the technical field of cooking appliances, and specifically discloses a burner. The burner includes a panel, a burner head, a gas distribution base, a burner cap assembly, a preheating pot stand, and a sealing ring. The bottom of the preheating pot stand is connected to the sealing ring, and the sealing ring is connected to the panel. A primary air preheating channel is provided inside the preheating pot stand. The preheating pot stand is also provided with an air inlet and an air outlet that are both communicated with the primary air preheating channel. The sealing ring and the panel enclose an annular secondary air preheating channel, and the air outlet is communicated with the secondary air preheating channel. The secondary air preheating channel is used to supply air to the burner cap assembly. When the fuel output by the burner cap assembly burns, under the action of thermal radiation, the preheating pot stand will have a relatively high temperature. When air flows through the primary air preheating channel and the secondary air preheating channel, the secondary air can be heated twice, which can effectively increase the temperature of the secondary air participating in the combustion reaction, reduce heat loss, and improve the thermal efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking stoves, and particularly to a burner. Background Art

[0002] Currently, the secondary air supply of the cooking stove burner in the market adopts a passive supply method. When the cooking stove burner is burning normally, the secondary air is supplied with oxygen through the groove between the outer ring burner cap and the base.

[0003] For example, the previous patent with the application number CN201810418310.3 provides a gas stove. The outer edge of the pot support extends outward and is spaced from the cooking stove panel of the gas stove, forming an air inlet suitable for introducing secondary air. However, due to the relatively low temperature of the outside air, when the secondary air supplies fuel and participates in the combustion reaction, the colder air will absorb part of the heat dissipated by the flame, resulting in heat loss and reducing the combustion efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a burner to reduce heat loss and improve combustion efficiency.

[0005] The present invention provides a burner, which includes a panel, a burner head installed on the panel, a gas distribution seat installed on the burner head, and a burner cap assembly installed on the gas distribution seat and used for outputting fuel. The burner further includes:

[0006] A preheating pot support, which simultaneously sleeves the gas distribution seat and the burner cap assembly. The preheating pot support is provided with a primary air preheating channel, and the preheating pot support is further provided with an air inlet and an air outlet both communicating with the primary air preheating channel;

[0007] A sealing ring, connected to the bottom of the preheating pot support and sealingly attached to the panel. The preheating pot support, the sealing ring and the panel enclose an annular secondary air preheating channel. The air outlet communicates with the secondary air preheating channel, and the air outlet is close to the outer periphery of the secondary air preheating channel and far from the inner periphery of the secondary air preheating channel. The secondary air preheating channel is used to supply air to the burner cap assembly.

[0008] As a preferred technical solution of the burner, the primary air preheating channel is spiral.

[0009] As a preferred technical solution of the burner, the air inlet communicates with the inner periphery of the primary air preheating channel, and the air outlet communicates with the outer periphery of the primary air preheating channel.

[0010] As a preferred technical solution of the burner, the primary air preheating channel includes two sub-channels both in a spiral shape. The inner ends of the two sub-channels are communicated, and the outer ends of the two sub-channels are respectively communicated with the air inlet and the air outlet.

[0011] As a preferred technical solution of the burner, the sealing ring is arranged on the outer edge of the preheating pot stand.

[0012] As a preferred technical solution of the burner, along the direction of air delivery in the secondary air preheating channel, the aperture of the secondary air preheating channel first decreases and then increases.

[0013] As a preferred technical solution of the burner, the burner further includes a blower, and the output end of the blower is communicated with the air inlet.

[0014] As a preferred technical solution of the burner, the preheating pot stand includes a preheating plate and a pot stand arranged above the preheating plate. The pot stand is used for supporting cookware. The sealing ring is connected to the preheating plate, and the primary air preheating channel, the air inlet and the air outlet are all arranged on the preheating plate.

[0015] As a preferred technical solution of the burner, the burner head assembly includes an inner burner head and an outer burner head, and both the inner burner head and the outer burner head are arranged on the gas distribution seat;

[0016] The burner further includes an air delivery channel. The air delivery channel includes a first channel arranged between the gas distribution seat and the panel, a second channel arranged on the gas distribution seat, and a third channel arranged between the inner burner head and the outer burner head. The first channel, the second channel and the third channel are communicated in sequence, and the secondary air preheating channel is communicated with the first channel.

[0017] As a preferred technical solution of the burner, the air delivery channel further includes a fourth channel arranged between the gas distribution seat and the preheating pot stand, and a fifth channel arranged between the outer burner head and the preheating pot stand. The secondary air preheating channel is communicated with the fourth channel.

[0018] The beneficial effects of the present invention are:

[0019] The present invention provides a burner. The bottom of the preheating pot rack of the burner is connected to a sealing ring, and the sealing ring is connected to a panel. A primary air preheating channel is provided inside the preheating pot rack. The preheating pot rack is further provided with an air inlet and an air outlet that are both communicated with the primary air preheating channel. The sealing ring and the panel enclose an annular secondary air preheating channel. The air outlet is communicated with the secondary air preheating channel, and the air outlet is close to the outer periphery of the secondary air preheating channel and far from the inner periphery of the secondary air preheating channel. The secondary air preheating channel is used to supply air to the burner head assembly. When the fuel output by the burner head assembly burns, under the action of thermal radiation, the preheating pot rack will have a relatively high temperature. When air flows through the primary air preheating channel and the secondary air preheating channel, the secondary air can be heated twice, which can effectively increase the temperature of the secondary air participating in the combustion reaction, reduce heat loss, and improve the thermal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a top view of the burner in an embodiment of the present invention;

[0021] Figure 2 is an axonometric view of the burner in an embodiment of the present invention;

[0022] Figure 3 is an exploded view of the burner in an embodiment of the present invention;

[0023] Figure 4 is Figure 1 a cross-sectional view of the burner along the A-A direction in

[0024] Figure 5 is Figure 1 a cross-sectional view of the burner along the B-B direction in

[0025] Figure 6 is a schematic diagram of the burner supporting cookware in an embodiment of the present invention;

[0026] Figure 7 is a partial structural schematic Figure 1 ;

[0027] Figure 8 is a partial structural schematic Figure 2 ;

[0028] Figure 9 is a partial structural schematic diagram of the preheating plate of the burner in an embodiment of the present invention;

[0029] Figure 10 is a cross-sectional view of the preheating plate of the burner in an embodiment of the present invention;

[0030] Figure 11 is a schematic diagram of the profile line of the primary air preheating channel of the burner in an embodiment of the present invention.

[0031] In the figure:

[0032] 1. Panel; 11. Through-hole;

[0033] 2. Burner head;

[0034] 3. Gas distribution base;

[0035] 4. Burner cap assembly; 41. Inner burner cap; 42. Outer burner cap;

[0036] 5. Blower;

[0037] 6. Preheating pot stand; 61. Preheating plate; 611. Primary air preheating channel; 612. Air inlet; 613. Air outlet; 614. Positioning protrusion; 615. Spiral partition; 62. Pot stand; 621. Base; 622. Leg; 623. Positioning groove; 63. Support column; 64. Secondary air preheating channel;

[0038] 7. Water receiving tray;

[0039] 81. First channel; 82. Second channel; 83. Third channel; 84. Fourth channel; 85. Fifth channel;

[0040] 9. Sealing ring;

[0041] 10. Cookware. Detailed implementation manners

[0042] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0044] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0046] The outer edge of the pot support of the existing gas stove extends outward and is spaced from the stove top of the gas stove to form an air inlet suitable for introducing secondary air. However, since the temperature of the outside air is relatively low, when the secondary air supplies fuel and participates in the combustion reaction, the relatively cold air will absorb part of the heat dissipated by the flame, resulting in heat loss and reducing the combustion efficiency.

[0047] In view of this, the present embodiment provides a burner that can reduce heat loss and improve combustion efficiency.

[0048] Specifically, as Figures 1 to 6As shown in the figure, this embodiment provides a burner, which includes a panel 1, a burner head 2, a gas distribution seat 3, a burner cap assembly 4, a preheating pot rack 6, and a sealing ring 9. Among them, the burner head 2 is installed on the panel 1, the gas distribution seat 3 is installed on the burner head 2, the burner cap assembly 4 is installed on the gas distribution seat 3 and is used for outputting fuel. The sealing ring 9 is connected to the bottom of the preheating pot rack 6 and is in sealing fit with the panel 1. The preheating pot rack 6 supports and sleeves the gas distribution seat 3 and the burner cap assembly 4 at the same time. The preheating pot rack 6 is used to support the cookware 10. The preheating pot rack 6 is provided with a primary air preheating channel 611. The preheating pot rack 6 is also provided with an air inlet 612 and an air outlet 613 that are both communicated with the primary air preheating channel 611. The sealing ring 9 and the panel 1 enclose a ring-shaped secondary air preheating channel 64. The air outlet 613 is communicated with the secondary air preheating channel 64, and the air outlet 613 is close to the outer periphery of the secondary air preheating channel 64 and far from the inner periphery of the secondary air preheating channel 64. The secondary air preheating channel 64 is used to supply air to the burner cap assembly 4. For the burner provided in this embodiment, the secondary air enters the secondary air preheating channel 64 from the air outlet 613 after passing through the air preheating channel from the air inlet 612, and the fuel output by the burner cap assembly 4 is supplied through the secondary air preheating channel 64 for combustion. When the fuel output by the burner cap assembly 4 burns, under the action of thermal radiation, the preheating pot rack 6 will have a relatively high temperature. When the air flows through the primary air preheating channel 611, the air exchanges heat with the preheating pot rack 6 and the temperature is increased. When the air flows through the secondary air preheating channel 64, the air exchanges heat with the preheating pot rack 6 again and the temperature is increased. By heating the secondary air twice, the temperature of the secondary air participating in the combustion reaction can be effectively increased, heat loss can be reduced, and the thermal efficiency can be improved. And, since the air outlet 613 is close to the outer periphery of the secondary air preheating channel 64 and far from the inner periphery of the secondary air preheating channel 64, the secondary air preheating channel 64 can have a longer stroke, which is beneficial for the air to absorb more heat when passing through the secondary air preheating channel 64.

[0049] Optionally, the burner further includes a blower 5, and the output end of the blower 5 is communicated with the air inlet 612. Under the action of the blower 5, it can ensure sufficient air supply and further ensure sufficient air supply.

[0050] As Figure 4 shown in the figure, in this embodiment, the blower 5 is arranged below the panel 1. The panel 1 is provided with a through hole 11. The air inlet 612 passes through the through hole 11 and is located below the panel 1, so that the overall beauty of the burner can be ensured. As an alternative solution, the blower 5 can also be supported above the panel 1.

[0051] As Figures 2 to 8As shown in the figure, the preheating pot stand 6 includes a preheating plate 61 and a pot stand 62 disposed above the preheating plate 61. The pot stand 62 is used to support the cooking pot 10. The primary air preheating channel 611, the air inlet 612, and the air outlet 613 are all disposed on the preheating plate 61, and the sealing ring 9 is connected to the preheating plate 61. Specifically, the pot stand 62 includes a base 621 and a plurality of supporting legs 622 supported on the base 621. The plurality of supporting legs 622 are evenly distributed along the circumferential direction of the pot stand 62. Among them, in this embodiment, a scheme with four supporting legs 622 is exemplarily given. In other embodiments, the number of supporting legs 622 can also be set to other numbers according to needs. In this embodiment, when the fuel burns, the supporting legs 622 are within the range of the flame and can directly absorb heat and transfer it to the base 621. In addition, a part of the heat generated by the fuel combustion is also absorbed by the base 621 through thermal radiation. The base 621 can transfer the absorbed heat to the preheating plate 61 below, and the preheating plate 61 heats the air flowing through the primary air preheating channel 611. Preferably, the upper surface of the preheating plate 61 and the lower surface of the base 621 are in contact to ensure good heat transfer effect between the preheating plate 61 and the base 621. Further preferably, both the base 621 and the preheating plate 61 are concave disk-shaped structures. Such a setting can make the preheating pot stand 6 have a larger heat receiving area to improve the heating effect on the air in the primary air preheating channel 611. Further preferably, an annular positioning protrusion 614 is provided on the preheating plate 61, and an annular positioning groove 623 is provided on the base 621. The positioning protrusion 614 and the positioning groove 623 are inserted to ensure the relative position of the pot stand 62 and the preheating plate 61 is stable, and further ensure that the base 621 and the preheating plate 61 can be stably attached together.

[0052] Optionally, the preheating plate 61 and the sealing ring 9 are integrally provided.

[0053] Optionally, please refer to Figures 4 to 6 , the burner further includes a water receiving tray 7 sleeved on the burner head 2. The water receiving tray 7 is connected to the burner head 2 and is supported on the panel 1. The preheating pot stand 6 further includes a plurality of support columns 63 connected to the bottom of the preheating plate 61. The plurality of support columns 63 are evenly distributed along the circumferential direction of the preheating plate 61, and the support columns 63 are in contact with the upper surface of the water receiving tray 7. Among them, the water receiving tray 7 and the burner head 2 are connected by screwing. The outer edge of the water receiving tray 7 can be placed on the panel 1, and the water receiving tray 7 can be supported by the panel 1 and the burner head 2. The preheating pot stand 6 is supported on the water receiving tray 7 through the support columns 63, and the support columns 63 cooperate with the sealing ring 9 to ensure that the preheating pot stand 6 is stably supported on the panel 1. Among them, the support columns 63 and the preheating plate 61 can be integrally provided or detachably connected.

[0054] Optionally, please refer to Figure 9 and Figure 10, the primary air preheating passage 611 is spiral. Specifically, the preheating disc 61 includes a housing and a spiral partition 615. The housing has a receiving cavity, and the air inlet 612 and the air outlet 613 are both provided on the housing. The spiral partition 615 is located in the receiving cavity, and both the upper and lower sides of the spiral partition 615 are connected to the cavity wall of the receiving cavity, thereby forming the spiral primary air preheating passage 611. The spiral structure can significantly increase the heat exchange path of the primary air preheating passage 611, which is beneficial to increasing the temperature of the air. The housing and the spiral partition 615 can be integrally provided. Preferably, the air inlet 612 communicates with the inner circumference of the primary air preheating passage 611, and the air outlet 613 communicates with the outer circumference of the primary air preheating passage 611. With this arrangement, when the air enters the primary air preheating passage 611 from the air inlet 612, it will move in a circumferential direction of the preheating disc 61 for multiple turns to reach the air outlet 613, and the heat exchange path of the primary air preheating passage 611 reaches the longest.

[0055] Optionally, the preheating disc 61 is provided with a plurality of air outlets 613. The plurality of air outlets 613 are arranged in sequence along the direction in which the primary air preheating passage 611 conveys air, and the plurality of air outlets 613 are evenly distributed along the circumferential direction of the preheating disc 61. In this way, it can ensure the uniform supply of air to the fuel output by the burner head assembly 4. Further preferably, along the direction in which the primary air preheating passage 611 conveys air, the apertures of the plurality of air outlets 613 gradually increase. It can be understood that as the air gradually passes through the plurality of air outlets 613, the air pressure will gradually decrease. If the apertures of each air outlet 613 are the same, it will cause the air flow rate output by the plurality of air outlets 613 to gradually decrease along the direction in which the primary air preheating passage 611 conveys air. In this regard, by gradually increasing the apertures of the plurality of air outlets 613 along the direction in which the primary air preheating passage 611 conveys air, the air flow rate output by each air outlet 613 can be ensured to be balanced.

[0056] As an alternative solution, please refer to Figure 11 , the primary air preheating passage 611 includes two sub-passages that are both spiral. The inner ends of the two sub-passages are connected, and the outer ends of the two sub-passages are respectively connected to the air inlet 612 and the air outlet 613.

[0057] As an alternative solution, the primary air preheating passage 611 may further include a main passage and a plurality of sub-passages. The plurality of sub-passages are all connected to the main passage. The air inlet 612 is connected to the main passage, and the plurality of air outlets 613 are respectively connected to the plurality of sub-passages in one-to-one correspondence.

[0058] Optionally, a sealing ring 9 is arranged on the outer edge of the preheating pot support 6. Such an arrangement can enable the secondary air preheating channel 64 to have the maximum radial dimension, so as to ensure that the heat exchange path between the air and the preheating pot support 6 is maximized when the air passes through the secondary air preheating channel 64. It can be understood that the secondary air preheating channel 64 in this embodiment is a semi-closed space, which can only convey the air to one side of the air distribution seat 3 to ensure the full utilization of the air output from the primary air preheating channel 611. And when the air is input into the secondary air preheating channel 64 from the air outlet 613, it can buffer the air flow to ensure the uniform supply of air to the burner assembly 4. Preferably, along the direction of conveying air in the secondary air preheating channel 64, the aperture of the secondary air preheating channel 64 first decreases and then increases. Specifically, in the part of the secondary air preheating channel 64 between the sealing ring 9 and the support column 63, its aperture gradually decreases along the direction of conveying air, and this part can effectively buffer the air. In the part of the secondary air preheating channel 64 located between the support column 63 and the air distribution seat 3, its aperture gradually increases, and this part guides the air to be conveyed out in a fan shape, which is beneficial for the air to enter between the air distribution seat 3 and the panel 1, and between the preheating plate 61 and the air distribution seat 3 respectively, so as to supplement the secondary air to different positions of the burner assembly 4.

[0059] Specifically, the burner assembly 4 includes an inner burner 41 and an outer burner 42. The inner burner 41 and the outer burner 42 are both arranged on the air distribution seat 3, and the air distribution seat 3 is used to convey the fuel provided by the burner head 2 to the outer burner 42 and the inner burner 41 respectively. The burner further includes an air conveying channel. The air conveying channel includes a first channel 81 arranged between the air distribution seat 3 and the water receiving tray 7, a second channel 82 arranged on the air distribution seat 3, and a third channel 83 arranged between the inner burner 41 and the outer burner 42. The first channel 81, the second channel 82 and the third channel 83 are connected in sequence. The secondary air preheating channel 64 is connected to the first channel 81. The secondary air output from the secondary air preheating channel 64 can be supplied to the fuel output from the inner burner 41 and the outer burner 42 for combustion in sequence through the first channel 81, the second channel 82 and the third channel 83 to ensure the combustion efficiency. Preferably, the air conveying channel further includes a fourth channel 84 arranged between the air distribution seat 3 and the preheating pot support 6, and a fifth channel 85 arranged between the outer burner 42 and the preheating pot support 6. The secondary air preheating channel 64 is also connected to the fourth channel 84. Since the outer burner 42 outputs more fuel than the inner burner 41, with such an arrangement, a part of the secondary air output from the secondary air preheating channel 64 can also be separately supplied to the outer burner 42 through the fourth channel 84 and the fifth channel 85 to ensure sufficient air for the fuel output from the outer burner 42, and thus ensure the combustion efficiency.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A burner, comprising a panel (1), a burner head (2) installed on the panel (1), a gas distribution base (3) installed on the burner head (2), and a burner cap assembly (4) installed on the gas distribution base (3) and used for outputting fuel, characterized in that, The burner also includes: A preheating pot rack (6), the preheating pot rack (6) being sleeved on the air distribution seat (3) and the fire cover assembly (4) at the same time, the preheating pot rack (6) being provided with a primary air preheating channel (611), and the preheating pot rack (6) being further provided with an air inlet (612) and an air outlet (613) both being in communication with the primary air preheating channel (611); A sealing ring (9) is connected to the bottom of the preheating pot rack (6) and the sealing ring (9) is sealed and fitted with the panel (1); the preheating pot rack (6), the sealing ring (9) and the panel (1) are arranged to form a secondary air preheating channel (64) in the shape of an annular ring; the air outlet (613) is connected to the secondary air preheating channel (64), and the air outlet (613) is close to the outer periphery of the secondary air preheating channel (64) and away from the inner periphery of the secondary air preheating channel (64); the secondary air preheating channel (64) is used to supply air to the fire cover assembly (4).

2. The burner according to claim 1, characterized in that, The primary air preheating channel (611) is spiral-shaped.

3. The burner according to claim 2, characterized in that, The air inlet (612) is connected to the inner periphery of the primary air preheating channel (611), and the air outlet (613) is connected to the outer periphery of the primary air preheating channel (611).

4. The burner according to claim 1, characterized in that, The primary air preheating channel (611) comprises two branch channels, both of which are spiral-shaped; the inner ends of the two branch channels are connected, and the outer ends of the two branch channels are respectively connected to the air inlet (612) and the air outlet (613).

5. The burner according to claim 1, characterized in that, The sealing ring (9) is arranged on the outer edge of the preheating pot rack (6).

6. The burner according to claim 1, characterized in that, Along the direction in which the secondary air preheating channel (64) conveys air, the aperture of the secondary air preheating channel (64) first decreases and then increases.

7. The burner according to any one of claims 1-6, characterized in that, The burner further comprises a blower (5), the output end of the blower (5) being in communication with the air inlet (612).

8. The burner according to any one of claims 1-6, characterized in that, The preheating pot rack (6) comprises a preheating plate (61) and a pot rack (62) arranged above the preheating plate (61), the pot rack (62) being used to support the pot (10), the sealing ring (9) being connected to the preheating plate (61), and the primary air preheating channel (611), the air inlet (612) and the air outlet (613) being all arranged on the preheating plate (61).

9. The burner according to claim 8, characterized in that, The fire cover assembly (4) comprises an inner fire cover (41) and an outer fire cover (42), and the inner fire cover (41) and the outer fire cover (42) are both arranged on the gas distribution seat (3); The burner also includes an air delivery channel, which includes a first channel (81) arranged between the air distribution seat (3) and the panel (1), a second channel (82) arranged on the air distribution seat (3), and a third channel (83) arranged between the inner fire cover (41) and the outer fire cover (42), the first channel (81), the second channel (82) and the third channel (83) are connected in sequence, and the secondary air preheating channel (64) is connected to the first channel (81).

10. The burner according to claim 9, characterized in that, The air delivery channel further includes a fourth channel (84) disposed between the air distribution base (3) and the preheating pot rack (6), and a fifth channel (85) disposed between the outer burner cap (42) and the preheating pot rack (6), and the secondary air preheating channel (64) is in communication with the fourth channel (84).

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