A uniform pressure furnace head structure

Abstract

This utility model discloses a pressure-equalizing burner head structure, including a stove and a burner head installed on the stove. The stove includes a bottom shell and a panel covering the bottom shell. The upper part of the burner head protrudes from the panel. The burner head is provided with a pressure-equalizing channel. The upper part of the burner head is provided with a first port that communicates with the pressure-equalizing channel and is located on the upper side of the panel. The lower part of the burner head is provided with a second port that communicates with the pressure-equalizing channel and is located on the lower side of the panel. The purpose of this utility model is to overcome the shortcomings of the prior art and provide a pressure-equalizing burner head structure that stabilizes the intake air pressure and improves the intake efficiency.

Description

Technical Field

[0001] This utility model specifically relates to a uniform pressure furnace head structure. Background Technology

[0002] In traditional gas stoves, the cooktop typically has burners, and inside is a mixing device connected to the gas passage for mixing with air. Air usually enters from the bottom of the cooktop, undergoes a primary mixing process in the mixing device, resulting in a preliminary mixture of gas and air. This mixture then reaches the burners for a secondary mixing with air before being ejected and burned. The specific structure of the mixing device can be found in patent CN200620116493.6, entitled "Device for Mixing Gas and Air in Gas Stove Equipment." In this design, the air supply relies on the natural air pressure difference between the bottom of the cooktop and the external environment. The mixing ratio of the primary air is controlled by adjusting the damper opening, thus maintaining the oxygen supply required for combustion. However, with the evolution of modern kitchen design, the integration of built-in cooktops with integrated cabinets is becoming increasingly common, leading to a trend towards enclosed cooktop installation spaces. This obstructs the bottom air intake passage, significantly reducing airflow efficiency.

[0003] In such enclosed installation environments, traditional cooktops face two major technical bottlenecks: First, the bottom air intake is limited by the physical obstruction of the cabinet structure, which cannot meet the oxygen supply required for complete combustion, resulting in an imbalance in the gas-air mixture ratio. This easily produces harmful gases such as carbon monoxide (CO) and nitrogen oxides (NOx) during combustion, while also causing a decrease in thermal efficiency (experimental data shows that thermal efficiency can be reduced by 10%-15%). Second, the existing damper adjustment mechanism is not adaptable enough to local enclosed environments. When air supply is limited, even if the damper is adjusted to its maximum opening, it is still difficult to achieve stable air replenishment. Moreover, excessively expanding the damper structure will disrupt the internal pressure balance of the burner, which will exacerbate the unstable combustion phenomenon.

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

[0005] This utility model was developed precisely because of the aforementioned shortcomings. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a pressure-equalizing furnace head structure that stabilizes the furnace head intake pressure and improves the intake efficiency.

[0007] This utility model is achieved through the following technical solution:

[0008] This utility model provides a pressure equalizing burner head structure, including a stove and a burner head installed on the stove. The stove includes a bottom shell and a panel covering the bottom shell. The upper part of the burner head protrudes from the panel. The burner head is provided with a pressure equalizing channel. The upper part of the burner head is provided with a first port that communicates with the pressure equalizing channel and is located on the upper side of the panel. The lower part of the burner head is provided with a second port that communicates with the pressure equalizing channel and is located on the lower side of the panel.

[0009] As described above, the uniform pressure furnace head structure includes a main ejector tube and a secondary ejector tube connected to the furnace head. The main ejector tube has a main air intake channel for communication with the gas pipeline, and the secondary ejector tube has a secondary air intake channel for communication with the gas pipeline. The top of the furnace head is provided with an outer ring gas chamber communicating with the main air intake channel and an inner ring gas chamber communicating with the secondary air intake channel. The top of the furnace head is also 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 also provided on the side wall of the furnace head.

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

[0011] As described above, the uniform pressure furnace head structure is further provided with a second mixing chamber at the top of the furnace head, and the inner ring gas chamber is arranged around the second mixing chamber. An air inlet channel connecting the second mixing chamber and the first mixing chamber is provided.

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

[0013] As described above, in the pressure equalization furnace head structure, the main body of the pressure equalization channel is a fan-shaped structure whose width gradually decreases from the periphery to the center.

[0014] As described above, the pressure equalizing furnace head structure includes a base and a cover. The base has a first through hole running vertically through it, and the cover has a through channel that connects with the first through hole when it is placed on the base. The first through hole and the through channel together form the pressure equalizing channel.

[0015] As described above, the pressure equalization furnace head structure includes a base and a cover. The pressure equalization channel is opened on the cover, the first port is opened on the side of the cover, and the second port is opened on the bottom of the cover.

[0016] As described above, the pressure equalization furnace head structure has a slot with a side opening on the bottom shell, and a mounting foot that extends downwards on the furnace head. The lower end of the mounting foot has a pin for horizontal insertion into the slot.

[0017] As described above, in the pressure equalization furnace head structure, the bottom shell has a first mounting hole with a vertical through slot, and the pin has a second mounting hole corresponding to the first mounting hole.

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

[0019] 1. Significantly improved combustion efficiency: The top air intake design of the pressure equalization channel avoids the problem of bottom air intake obstruction caused by closed cabinets. Air and gas are more fully premixed before combustion, resulting in a more complete combustion reaction. Experimental data shows that thermal efficiency can be improved by 15%-20%, while the flame temperature distribution is more uniform, shortening cooking time and reducing gas consumption (gas utilization rate is improved by about 10%).

[0020] 2. Harmful gas emissions are significantly reduced. By optimizing the air supply path, the mixing ratio of fuel gas and oxygen is closer to the theoretical combustion value, significantly reducing incomplete combustion caused by insufficient oxygen supply. Carbon monoxide (CO) emissions can be reduced by 30%-50%, and nitrogen oxide (NOx) formation can be reduced by 20%-30%, meeting green environmental protection and indoor air safety standards.

[0021] 3. Optimized combustion stability and safety: The top air intake method utilizes gravity-assisted natural convection, resulting in a more uniform air supply that is less susceptible to external environmental disturbances. This effectively prevents abnormal combustion phenomena such as backfire and flameout, and improves flame wind resistance by approximately 40%. Furthermore, reduced internal pressure fluctuations in the burner further lower the risk of gas leakage, significantly enhancing safety.

[0022] 4. Outstanding energy-saving and environmental benefits: By improving thermal efficiency and gas utilization, users' gas consumption is reduced by approximately 10%-15%, with a corresponding decrease in carbon emissions. Furthermore, reducing harmful gas emissions lowers the load on kitchen ventilation systems, indirectly saving building energy consumption.

[0023] 5. Improved efficiency: The alternating arrangement of the first port and the air inlet allows air from the underside of the burner head to quickly replenish the air inlet, improving the efficiency of air replenishment. At the same time, it balances the air pressure on the side of the burner head, further stabilizing airflow and preventing the generation of local negative pressure. Attached Figure Description

[0024] Figure 1 This is a partial cross-sectional schematic diagram of the stove in Embodiment 1;

[0025] Figure 2 This is a top view schematic diagram of the burner body in Embodiment 1;

[0026] Figure 3 yes Figure 2 A schematic diagram of the cross-section at point AA;

[0027] Figure 4 yes Figure 2 A schematic diagram of the cross-section at point BB;

[0028] Figure 5 This is an exploded view of the burner body in Example 1;

[0029] Figure 6 This is a partial cross-sectional schematic diagram of the burner head body in Embodiment 1;

[0030] Figure 7 This is an exploded view of the burner body in Example 2;

[0031] Figure 8 This is a cross-sectional schematic diagram of the burner body in Embodiment 2;

[0032] Figure 9 This is a schematic diagram of the burner body and the outer shell of the stove body in Embodiment 3. Figure 1 ;

[0033] Figure 10 This is a schematic diagram of the burner body and the outer shell of the stove body in Embodiment 3. Figure 2 . Detailed Implementation

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

[0035] The orientations described in this utility model specification, such as "up," "down," "left," "right," "front," and "back," are based on the orientations in the accompanying drawings and are intended to facilitate the description of the relationships between the various components. They do not indicate the unique or absolute positional relationships between the various components, but are merely one embodiment of the utility model and are not a limitation on its implementation.

[0036] Example 1

[0037] This utility model introduces a pressure-equalizing burner head structure, suitable for natural gas stoves or coal gas stoves, such as... Figure 1 As shown, the device includes a stove A, on which a burner 1 is mounted. The stove A includes a bottom shell A1 and a panel A2 covering the bottom shell A1. The panel A2 can be a one-piece structure; in this embodiment, the panel A2 is composed of two components joined together. The top of the burner 1 can also be covered with a flame shield, which has flame outlet holes so that the gas mixture in the burner can be ejected through the flame outlet holes. Figures 1 to 5As shown, the upper part of the burner head 1 protrudes from the panel A2. The burner head 1 is provided with a pressure equalization channel 10. The upper part of the burner head 1 has a first port 101 that communicates with the pressure equalization channel 10 and is located on the upper side of the panel A2. The lower part of the burner head 1 has a second port 102 that communicates with the pressure equalization channel 10 and is located on the lower side of the panel A2. The burner head 1 in this solution adopts an upper-mounted structure design. Its top working section extends upward from the reserved hole in the cooktop panel A2 and is exposed, forming the burner functional interface. The burner head body integrates a through-type pressure equalization channel 10. The upper part of the channel has a first port 101 that communicates with the upper side of the panel, and the lower part is configured with a second port 102 that communicates with the lower side cavity of the panel, constructing a three-dimensional airflow path across the panel area. When the cooktop is running, the gas mixing device B forms a two-way gas pressure compensation mechanism through the pressure equalization channel: the air above the panel enters the channel through the first port and forms a dynamic balance with the airflow drawn in through the second port below the panel in the channel, ensuring that the gas pressure gradient in the upper and lower areas of the panel always maintains stable air intake conditions under different operating conditions. This innovative structure breaks the limitation of traditional stoves with single-direction air intake. It achieves redundant design of air supply path through physical channels, retaining the function of conventional air intake channel on the lower side of the panel, while adding auxiliary air intake capability on the upper side of the panel, significantly improving the environmental adaptability of the combustion system.

[0038] More in detail, such as Figure 1 and Figure 6 As shown, the structure includes a burner body 100, which consists of a burner 1, a main injector 2 connected to the burner 1, and a secondary injector 3. The main injector 2 has a main air intake channel 20 communicating with the gas pipeline, and the secondary injector 3 has a secondary air intake channel 30 communicating with the gas pipeline. The top of the burner 1 also has a first mixing chamber 13 located 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 1. Air from outside the burner 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 then ejected through the flame outlet of the burner shroud. As air flows in at air inlet 131, the outlet diameter decreases. According to Bernoulli's law, the fluid pressure decreases at the location where the flow velocity increases, leading to a drop in air pressure at air inlet 131. This, in turn, reduces the air inflow rate and may even cause the combustion gas in the outer annular combustion chamber 11 to flow back into the first mixing chamber 13. Through the pressure equalization channel 10, the air pressure between the side and bottom of the burner head 1 becomes more uniform, effectively alleviating the negative air pressure generated at air inlet 131.

[0039] To improve pressure uniformity, preferably, the first port 101 and air inlet 131 are evenly distributed circumferentially on the side of the burner head 1, and the first port 101 and air inlet 131 are alternately arranged, that is, each air inlet 131 is adjacent to the first port 101. In this way, when air enters from the side of the burner head 1 through the air inlet 131, air from the lower side of the burner head 1 can quickly replenish the side of the burner head 1, making the airflow and pressure on the side of the burner head 1 more stable. Furthermore, as... Figure 9 and Figure 10 As shown, since the gas inlet 33 of the gas stove is generally located at the bottom, that is, on 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 gas inlet 33 can quickly and stably reach the side of the burner head 1 through the pressure equalization channel 10, reducing the disturbance to the airflow during the process of the air bypassing the burner head 1 to reach its side.

[0040] like Figure 1-3 and Figure 6 As shown, a second mixing chamber 14 is also provided at the top of the burner head 1, and an inner ring gas chamber 12 is arranged around the second mixing chamber 14. An air inlet channel 141 is provided between the second mixing chamber 14 and the first mixing chamber 13, allowing air entering the first mixing chamber 13 to enter the second mixing chamber 14 through the air inlet channel 141. Furthermore, since the second mixing chamber 14 requires less air than the first mixing chamber 13, the width of the air inlet channel 141 can be set to gradually decrease from the first mixing chamber 13 to the second mixing chamber 14, so that both mixing chambers can obtain sufficient and stable airflow.

[0041] As a preferred option, such as Figure 6 As shown, the main body of the pressure equalization channel 10 is a fan-shaped structure whose width gradually decreases from the periphery to the center, and the cavity between the air inlet 131 and the first mixing chamber 13 is also roughly a fan-shaped structure consistent with the shape of the main body of the pressure equalization channel 10. This structure can make full use of the limited space of the burner head 1, making the structure more compact, while maximizing the open area of ​​the air inlet 131 and the first port 101.

[0042] like Figure 5 As shown, in this embodiment, the burner head 1 includes a base 15 and a cover 16. The base 15 has a first through hole 151 extending vertically, and the cover 16 has a through channel 161 that connects with the first through hole 151 when it is placed on the base 15. The first through hole 151 and the through channel 161 form a pressure equalization channel 10, that is, the burner head 1 adopts a split structure, which is beneficial for constructing a more complex internal cavity structure.

[0043] Example 2

[0044] This utility model introduces a uniform pressure furnace head structure, such as Figure 7 and Figure 8As shown, the difference from Embodiment 1 is that this type of burner head structure is simpler. The pressure equalization channel 10 is opened on the cover 16, and the outer ring gas chamber 11 and inner ring gas chamber 12 are also opened on the cover 16. Since the base 15 has a more simplified structure, the cover 16 does not have a separate first mixing chamber 13 and second mixing chamber 14. The pressure equalization channel 10 directly penetrates the cover 16, and the first port 101 is opened on the side of the cover 16, while the second port 102 is opened at the bottom of the cover 16.

[0045] Example 3

[0046] like Figure 9 and Figure 10 As shown, the burner head body is used to connect and install on the stove body shell 3. The stove body shell 3 has a slot 31 with a side opening. The burner head 1 has a downwardly extending mounting foot 17. The lower end of the mounting foot 17 has a pin 18 for horizontal insertion into the slot 31. The stove body shell 3 has a first mounting hole 32 that vertically penetrates the slot 31. The pin 18 has a second mounting hole 19 corresponding to the first mounting hole 32. Fasteners can be passed through the two holes to install and fix the burner head 1. Alternatively, as another embodiment, the pin 18 may not have a mounting hole; simply inserting the pin 18 into the slot 31 is sufficient to install and fix the burner head 1. Furthermore, as yet another embodiment, the pin 18 may have more than one mounting hole; other mounting holes can be used in conjunction with the first mounting hole 32 to insert fasteners.

[0047] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A uniform pressure furnace head structure, characterized by: The stove (A) includes a cooker (A) with a burner head (1) installed on it. The cooker (A) includes a bottom shell (A1) and a panel (A2) covering the bottom shell (A1). The upper part of the burner head (1) protrudes from the panel (A2). The burner head (1) is provided with a pressure equalization channel (10). The upper part of the burner head (1) is provided with a first port (101) that communicates with the pressure equalization channel (10) and is located on the upper side of the panel (A2). The lower part of the burner head (1) is provided with a second port (102) that communicates with the pressure equalization channel (10) and is located on the lower side of the panel (A2).

2. The isopressing 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 the gas pipeline. The secondary ejector tube (3) has a secondary air intake channel (30) for communicating with the 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 mixing chamber (13) located 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 also provided on the side wall of the burner head (1).

3. The isopressing furnace head structure of claim 2, wherein: The first port (101) and the air inlet (131) are both evenly distributed along the circumference on the side of the furnace head (1), and the first port (101) and the air inlet (131) are arranged alternately.

4. The isopressing furnace head structure of claim 2, wherein: The top of the burner head (1) is also provided with a second mixing chamber (14), the inner ring gas chamber (12) is arranged around the second mixing chamber (14), and an air inlet channel (141) connecting the second mixing chamber (14) and the first mixing chamber (13) is provided.

5. The isopressing head structure of claim 4, wherein: The width of the air intake channel (141) gradually decreases from the first mixing chamber (13) to the second mixing chamber (14).

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

7. The isopressing head structure according to any of claims 1-6, characterized in that: The burner head (1) includes a base (15) and a cover (16). The base (15) has a first through hole (151) that runs vertically through the base. The cover (16) has a through channel (161) that connects with the first through hole (151) when it covers the base (15). The first through hole (151) and the through channel (161) constitute the pressure equalization channel (10).

8. The pressure-equalizing furnace head structure according to any one of claims 1-6, characterized in that: The burner head (1) includes a base (15) and a cover (16). The pressure equalization channel (10) is opened on 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).

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, and the burner head (1) is provided with a mounting foot (17) extending downward. The lower end of the mounting foot (17) is provided with a pin (18) for horizontal insertion into the slot (A11).

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

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