Uniform pressure furnace end structure

Abstract

The invention discloses a uniform-pressure furnace end structure which comprises a stove, a furnace end is mounted on the stove, the stove comprises a bottom shell and a panel covering the bottom shell, the upper portion of the furnace end is exposed out of the panel, a uniform-pressure channel is formed in the furnace end, and the lower portion of the furnace end is communicated with the uniform-pressure channel. The upper portion of the furnace end is provided with a first port which is communicated with the uniform pressure channel and located on the upper side of the panel, the lower portion of the furnace end is provided with a second port which is communicated with the uniform pressure channel and located on the lower side of the panel, and the uniform pressure furnace end structure aims to overcome the defects in the prior art, stabilizes the air inlet pressure of the furnace end and improves the air inlet efficiency.

Description

Technical Field

[0001] The invention specifically relates to a uniform pressure furnace head structure. Background Art

[0002] In a traditional gas stove or coal gas stove, a burner is generally provided on the stove, and a gas mixing device connected to the gas channel and used to mix with air is provided inside the stove. Air generally enters from the bottom of the stove, and is mixed once by the gas mixing device so that the gas and air are initially mixed. After the mixed gas reaches the burner, it is mixed with the air for a second time, and then the mixed gas is ejected from the burner and burned. The specific structure of the gas mixing device can refer to the patent scheme with patent number CN200620116493.6, which is named as a device for mixing gas and air in a coal gas stove. In this type of design, the supply of air depends on the natural air pressure difference between the bottom of the stove and the external environment. The mixing ratio of the primary air is controlled by adjusting the air door opening, so as to maintain the oxygen supply required for combustion. However, with the evolution of modern kitchen design, the combination of built-in stoves and integrated cabinets is becoming more and more common, and the stove installation space is becoming more and more closed, resulting in the obstruction of the bottom air intake channel and a significant reduction in air circulation efficiency.

[0003] In this type of closed installation environment, traditional stoves face two major technical bottlenecks: first, the air intake at the bottom is limited by the physical barrier of the cabinet structure, which cannot meet the oxygen supply required for sufficient combustion, resulting in an unbalanced mixture ratio of gas and air. Harmful gases such as carbon monoxide (CO) and nitrogen oxides (NOx) are easily produced during the combustion process, and the thermal efficiency is reduced (experimental data show that the thermal efficiency can be reduced by 10%-15%). Second, the existing damper adjustment mechanism is not adaptable enough to the local closed environment. When the air supply is limited, even if the damper is adjusted to the maximum opening, it is still difficult to achieve stable air replenishment, and excessive expansion of the damper structure will destroy the pressure balance inside the burner, which will aggravate the combustion instability.

[0004] Secondly, the air flow path in the traditional burner structure is relatively single and the air replenishment efficiency is low. Especially during high-load combustion, insufficient air supply may lead to incomplete combustion and produce harmful gases, which not only wastes energy but also pollutes the environment.

[0005] The present invention is just produced based on the above-mentioned shortcomings. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a uniform pressure burner head structure which can stabilize the burner head air intake pressure and improve the air intake efficiency.

[0007] The present invention is achieved through the following technical solutions:

[0008] The present invention provides a uniform pressure burner head structure, including a cooking appliance, on which a burner head is installed. The cooking appliance includes a bottom case and a panel covering the bottom case. The upper part of the burner head protrudes from the panel. The burner head is provided with a uniform pressure channel. The upper part of the burner head is provided with a first port that communicates with the uniform pressure channel and is located above the panel, and the lower part of the burner head is provided with a second port that communicates with the uniform pressure channel and is located below the panel.

[0009] For the uniform pressure burner head structure as described above, the burner head is connected with a main ejector pipe and a sub-ejector pipe. The main ejector pipe has a main air inlet channel for communicating with a gas pipeline, and the sub-ejector pipe has a sub-air inlet channel for communicating with the gas pipeline. The top of the burner head is provided with an outer ring gas chamber communicating with the main air inlet channel and an inner ring gas chamber communicating with the sub-air inlet channel. The top of the burner head is further provided with a first mixing chamber located between the outer ring gas chamber and the inner ring gas chamber. An air inlet communicating with the first mixing chamber is further opened on the side wall of the burner head.

[0010] For the uniform pressure burner head structure as described above, both the first port and the air inlet are evenly distributed along the circumference on the side surface of the burner head, and the first port and the air inlet are arranged alternately.

[0011] For the uniform pressure burner head structure as described above, the top of the burner head is further provided with a second mixing chamber. The inner ring gas chamber surrounds the second mixing chamber. An air inlet channel communicating the two is provided between the second mixing chamber and the first mixing chamber.

[0012] For the uniform pressure burner head structure as described above, the width of the air inlet channel gradually decreases from the first mixing chamber to the second mixing chamber.

[0013] For the uniform pressure burner head structure as described above, the main body of the uniform pressure channel is a fan-shaped structure with a gradually decreasing width from the periphery to the center.

[0014] For the uniform pressure burner head structure as described above, the burner head includes a base and a cover. The base is provided with a first through hole penetrating up and down, and the cover is provided with a through channel that can be docked with the first through hole when the cover is covered on the base. The first through hole and the through channel constitute the uniform pressure channel.

[0015] For the uniform pressure burner head structure as described above, the burner head includes a base and a cover. The uniform pressure channel is opened on the cover. The first port is opened on the side surface of the cover, and the second port is opened on the bottom of the cover.

[0016] For the uniform pressure burner head structure as described above, the bottom case is provided with a slot with a side opening. The burner head is provided with a downward protruding mounting foot, and the lower end of the mounting foot is provided with a plug for horizontally inserting into the slot.

[0017] For the uniform pressure burner head structure described above, a first mounting hole vertically penetrating the slot is provided on the bottom shell, and a second mounting hole corresponding to the first mounting hole is provided on the pin.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The combustion efficiency is significantly improved. The air intake design above the uniform pressure channel can avoid the problem of air intake obstruction at the bottom caused by the closed cabinet. The air and gas are more fully premixed before combustion, and the combustion reaction is more complete. Experimental data shows that the thermal efficiency can be increased by 15%-20%. At the same time, the flame temperature distribution is more uniform, shortening the cooking time and reducing the gas consumption (the gas utilization rate is increased by about 10%).

[0020] 2. The emission of harmful gases is greatly reduced. By optimizing the air supply path, the mixing ratio of gas and oxygen is closer to the theoretical combustion value, significantly reducing the phenomenon of incomplete combustion caused by insufficient oxygen supply. The carbon monoxide (CO) emission can be reduced by 30%-50%, and the generation amount of nitrogen oxides (NOx) is reduced by 20%-30%, meeting the green environmental protection and indoor air safety standards.

[0021] 3. The combustion stability and safety are optimized. The upper air intake method uses gravity-assisted natural convection, and the air supply is more uniform and not easily affected by external environmental disturbances, effectively avoiding abnormal combustion phenomena such as flashback and blowout. The flame wind resistance performance is improved by about 40%. In addition, the internal pressure fluctuation of the burner is reduced, further reducing the risk of gas leakage, and the safety is significantly improved.

[0022] 4. The energy-saving and environmental protection benefits are prominent. By improving the thermal efficiency and gas utilization rate, the user's gas consumption is reduced by about 10%-15%, and the carbon emission is reduced synchronously. In addition, reducing the emission of harmful gases can reduce the load of the kitchen ventilation system and indirectly save building energy consumption.

[0023] 5. Improve efficiency. The first port and the air inlet are arranged alternately, so that the air under the burner base can be quickly replenished to the air inlet, improving the efficiency of air replenishment. At the same time, the air pressure on the side of the burner base is balanced, further stabilizing the air flow and avoiding the generation of local negative pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a partial cross-sectional view of the cooking appliance in the first embodiment;

[0025] Figure 2 is a top view of the burner body in the first embodiment;

[0026] Figure 3 is Figure 2 a cross-sectional view taken along line A-A of

[0027] Figure 4 is Figure 2 the schematic cross-sectional view at B-B;

[0028] Figure 5 is the exploded view of the burner body of the first embodiment;

[0029] Figure 6 is the partial cross-sectional view of the burner body of the first embodiment;

[0030] Figure 7 is the exploded view of the burner body of the second embodiment;

[0031] Figure 8 is the cross-sectional view of the burner body of the second embodiment;

[0032] Figure 9 is the structural schematic of the burner body and the stove body shell of the third embodiment Figure 1 ;

[0033] Figure 10 is the structural schematic of the burner body and the stove body shell of the third embodiment Figure 2 . Detailed implementation manners

[0034] The invention will be further described below with reference to the accompanying drawings:

[0035] The orientations described in the specification of the present invention, such as "upper", "lower", "left", "right", "front", "rear", etc., are all based on the orientations of the accompanying drawings and are for the purpose of facilitating the description of the relationships between various components, rather than indicating the only or absolute positional relationships between various components. It is only one of the implementation manners to realize the invention and is not a limitation on its implementation manners.

[0036] The first embodiment

[0037] The present invention introduces a uniform pressure burner structure, which is applicable to natural gas stoves or gas stoves. As Figure 1 shown, it includes a cooker A, and a burner 1 is installed on the cooker A. The cooker A includes a bottom shell A1 and a panel A2 covering the bottom shell A1. The panel A2 can be an integral structure. In this embodiment, the panel A2 is formed by splicing two components. The top of the burner 1 usually can also be covered with a burner cap, and the burner cap is provided with fire holes so that the mixed gas in the burner can be ejected through the fire holes. As Figures 1 to 5As shown, the upper part of the burner head 1 is exposed from the panel A2. A pressure equalizing channel 10 is provided on the burner head 1. The upper part of the burner head 1 is provided with a first port 101 that communicates with the pressure equalizing channel 10 and is located above the panel A2. The lower part of the burner head 1 is provided with a second port 102 that communicates with the pressure equalizing channel 10 and is located below the panel A2. In this solution, the burner head 1 adopts an upper-mounted structure design. Its top working section extends upward from the reserved hole position of the cooking appliance panel A2 and is exposed, forming a burner functional interface. A through-type pressure equalizing channel 10 is integrated inside the burner head body. The upper part of this channel is provided with a first port 101 that communicates with the space above the panel, and the lower part is configured with a second port 102 that communicates with the cavity below the panel, constructing a three-dimensional air flow path across the panel area. When the cooking appliance is operating, the gas mixing device B forms a two-way air pressure compensation mechanism through the pressure equalizing channel: the air above the panel enters the channel through the first port and forms a dynamic balance with the air flow inhaled through the second port below the panel in the channel, ensuring that the air pressure gradient in the upper and lower areas of the panel always maintains stable air intake conditions under different working conditions. This structure innovatively breaks the limitation of the single-direction air intake of traditional cooking appliances and realizes the redundant design of the air supply path through a physical channel. It not only retains the function of the conventional air intake channel below the panel but also adds the auxiliary air intake capacity above the panel, significantly improving the environmental adaptability of the combustion system.

[0038] More specifically, as Figure 1 and Figure 6 shown, this structure includes a burner head body 100, and the burner head body 100 is composed of a burner head 1, a main ejector pipe 2 connected to the burner head 1, and an auxiliary ejector pipe 3. A main air intake channel 20 communicating with the gas pipeline is provided inside the main ejector pipe 2, and an auxiliary air intake channel 30 communicating with the gas pipeline is provided inside the auxiliary ejector pipe 3. A first mixing chamber 13 is further provided at the top of the burner head 1 between the outer ring gas chamber 11 and the inner ring gas chamber 12. An air inlet 131 communicating with the first mixing chamber 13 is opened on the side wall of the burner head 1. The air outside the burner head 1 enters the first mixing chamber 13 through the air inlet 131, mixes with the gas in the outer ring gas chamber 11, and is ejected through the flame holes of the burner cap. Since the outlet diameter becomes smaller when the air flows in at the air inlet 131, according to Bernoulli's law, the fluid pressure becomes smaller at the position where the flow rate increases, resulting in a decrease in the air pressure at the air inlet 131, and further causing a decrease in the air inflow rate. There may even be a phenomenon that the gas in the outer ring gas chamber 11 flows back to the first mixing chamber 13. Through the pressure equalizing channel 10, the air pressure between the side and the lower part of the burner head 1 is more uniform, effectively alleviating the air negative pressure generated at the air inlet 131.

[0039] To improve the air pressure equalization effect, preferably, the first ports 101 and the air inlets 131 are evenly distributed along the circumference on the side of the burner head 1, and the first ports 101 and the air inlets 131 are arranged alternately, that is, each air inlet 131 is adjacent to the first port 101. In this way, when the air on the side of the burner head 1 enters from the air inlets 131, the air under the burner head 1 can quickly supplement to the side of the burner head 1, making the air flow and air pressure on the side of the burner head 1 more stable. In addition, as Figure 9 and Figure 10 shown, since the air inlet 33 of the gas stove is generally opened at the bottom, that is, the lower side of the burner head 1, the effect of the above structure is further enhanced. The air entering the gas stove from the air inlet 33 can quickly and stably reach the side of the burner head 1 through the air pressure equalization channel 10, reducing the disturbance to the air flow during the process of the air bypassing the burner head 1 to reach its side.

[0040] As Figures 1 - 3 and Figure 6 shown, a second mixing chamber 14 is further provided at the top of the burner head 1, and the inner ring gas chamber 12 is arranged around the second mixing chamber 14. An air inlet channel 141 communicating the two is provided between the second mixing chamber 14 and the first mixing chamber 13, so that the air entering the first mixing chamber 13 enters the second mixing chamber 14 through the air inlet channel 141. Further, since the demand for air in the second mixing chamber 14 is less than that in the first mixing chamber 13, the air inlet channel 141 can be set to gradually decrease in width from the first mixing chamber 13 to the second mixing chamber 14, so that both mixing chambers can obtain sufficient and stable air flow.

[0041] Preferably, as Figure 6 shown, the main body of the air pressure equalization channel 10 is a fan-shaped structure with a gradually decreasing width from the periphery to the center, and the cavity between the air inlets 131 and the first mixing chamber 13 is also generally a fan-shaped structure consistent with the shape of the main body of the air pressure equalization channel 10. This structure can make full use of the limited space of the burner head 1, make the structure more compact, and at the same time make the open areas of the air inlets 131 and the first ports 101 as large as possible.

[0042] As Figure 5 shown, in this embodiment, the burner head 1 includes a base 15 and a cover 16. The base 15 is provided with a first through hole 151 penetrating up and down, and the cover 16 is provided with a through channel 161 that can be docked with the first through hole 151 when it covers the base 15. The first through hole 151 and the through channel 161 form the air pressure equalization channel 10, that is, the burner head 1 adopts a split structure, which is beneficial to constructing a more complex inner cavity structure.

[0043] Embodiment 2

[0044] The present invention introduces a kind of air pressure equalization burner head structure, as Figure 7 and Figure 8As shown, the difference from the first embodiment is that the structure of this burner head is simpler. The pressure equalizing channel 10 is opened on the cover 16, and the outer ring gas chamber 11 and the inner ring gas chamber 12 are also opened on the cover 16. Since the base 15 has a more simplified structure, the first mixing chamber 13 and the second mixing chamber 14 are not separately opened on the cover 16. The pressure equalizing channel 10 directly penetrates the cover 16, the first port 101 is opened on the side of the cover 16, and the second port 102 is opened at the bottom of the cover 16.

[0045] Embodiment Three

[0046] As Figure 9 and Figure 10 As shown, the burner head body is used to be connected and installed on the stove body shell 3. The stove body shell 3 is provided with a slot 31 with a side opening. The burner head 1 is provided with a downward extending mounting foot 17. The lower end of the mounting foot 17 is provided with a plug 18 for horizontally inserting into the slot 31. The stove body shell 3 is provided with a first mounting hole 32 vertically penetrating the slot 31. The plug 18 is provided with a second mounting hole 19 corresponding to the first mounting hole 32. The burner head 1 can be installed and fixed by passing a fastener through the two holes. Additionally, as another implementation method, the plug 18 may not be provided with a mounting hole, and the burner head 1 can be installed and fixed only by inserting the plug 18 into the slot 31. Further, as another implementation method, the plug 18 has more than one mounting hole, and the fastener can also be passed through by cooperating with other mounting holes and the first mounting hole 32.

[0047] The above are only embodiments of the present invention. Common knowledge such as specific structures and characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be subject to the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A uniform pressure furnace head structure, characterized in that: The invention comprises a stove (A), and a stove head (1) is installed on the stove (A). The stove (A) comprises a bottom shell (A1) and a panel (A2) covering the bottom shell (A1). The upper part of the stove head (1) is exposed from the panel (A2). The stove head (1) is provided with a pressure equalizing channel (10). The upper part of the stove head (1) is provided with a first port (101) which is connected to the pressure equalizing channel (10) and is located on the upper side of the panel (A2). The lower part of the stove head (1) is provided with a second port (102) which is connected to the pressure equalizing channel (10) and is located on the lower side of the panel (A2).

2. The uniform pressure furnace head structure according to claim 1, characterized in that: The burner head (1) is connected to a main ejector tube (2) and a secondary ejector tube (3); the main ejector tube (2) has a main air intake channel (20) for communicating with a gas pipeline; the secondary ejector tube (3) has a secondary air intake channel (30) for communicating with a gas pipeline; the top of the burner head (1) is provided with an outer ring gas chamber (11) communicating with the main air intake channel (20) and an inner ring gas chamber (12) communicating with the secondary air intake channel (30); the top of the burner head (1) is also provided with a first gas mixing chamber (13) located between the outer ring gas chamber (11) and the inner ring gas chamber (12); and the side wall of the burner head (1) is also provided with an air inlet (131) communicating with the first gas mixing chamber (13).

3. The uniform pressure furnace head structure according to claim 2, characterized in that: The first port (101) and the air inlet (131) are evenly distributed along the circumference on the side of the burner head (1), and the first port (101) and the air inlet (131) are arranged alternately.

4. The uniform pressure furnace head structure according to claim 2, characterized in that: A second gas mixing chamber (14) is also provided on the top of the burner head (1), the inner ring gas chamber (12) is arranged around the second gas mixing chamber (14), and an air intake passage (141) is provided between the second gas mixing chamber (14) and the first gas mixing chamber (13) to connect the two.

5. The uniform pressure furnace head structure according to claim 4, characterized in that: The width of the air intake channel (141) gradually decreases from the first air mixing chamber (13) to the second air mixing chamber (14).

6. The uniform pressure furnace head structure according to claim 2, characterized in that: The main body of the uniform pressure channel (10) is a fan-shaped structure whose width gradually decreases from the periphery to the center.

7. The uniform pressure furnace head structure according to any one of claims 1 to 6, characterized in that: The stove head (1) comprises a base (15) and a cover (16); the base (15) is provided with a first through hole (151) penetrating from top to bottom; the cover (16) is provided with a through channel (161) which can dock with the first through hole (151) when the cover (16) is covered on the base (15); the first through hole (151) and the through channel (161) constitute the uniform pressure channel (10).

8. The uniform pressure furnace head structure according to any one of claims 1 to 6, characterized in that: The furnace head (1) comprises a base (15) and a cover (16), the pressure-equalizing channel (10) is provided on the cover (16), the first port (101) is provided on the side of the cover (16), and the second port (102) is provided on the bottom of the cover (16).

9. The uniform pressure furnace head structure according to claim 1, characterized in that: The bottom shell (A1) is provided with a slot (A11) with a side opening, the furnace head (1) is provided with a mounting foot (17) extending downward, and the lower end of the mounting foot (17) is provided with a plug pin (18) for horizontally inserting into the slot (A11).

10. The uniform pressure furnace head structure according to claim 9, characterized in that: The bottom shell (A1) is provided with a first mounting hole (A12) vertically penetrating the slot (A11), and the plug pin (18) is provided with a second mounting hole (19) corresponding to the first mounting hole (A12).

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