TWI698615B - High efficiency dual-ring burning device - Google Patents

Abstract

A high efficiency dual-ring burning device includes a mixing tube unit, a burner seat, an inner-ring burner, an outer-ring burner, an inner-ring head, an outer-ring head and a soup receiver. The mixing tube unit has an inner mixing tube and an outer mixing tube. The inner mixing tube has an inner inlet end, a first runner, and an inner-ring buffer chamber. The outer mixing tube has an outer inlet end, a second runner, an internal buffer chamber and an outer-ring buffer chamber. The burner seat covers on the inner-ring buffer chamber and the outer-ring buffer chamber of the mixing tube unit. The inner-ringing burner and the outer-ring burner are disposed on the burner seat, and have a plurality of first passageways and second passageways, respectively. The inner-ring head and the outer-ring head are disposed on the inner-ring burner and the outer-ring burner respectively. The soup receiver is disposed around the outer-ring burner. Therefore, the present invention has a closed anti-overflow structure which is easy to clean, enhances the heating efficiency and reduces exhaust emissions.

Description

High-efficiency double-ring combustion device

The invention relates to a high-efficiency double-ring combustion device, in particular to a high-efficiency double-ring combustion device that can increase the heating area, have a more uniform heating effect, and improve the heating efficiency.

Taiwan Patent Certificate No. M477552, which discloses a combustion device and burner. The combustion device adopts the design of inner ring inner flame and outer ring outer flame. Whether it is used in a pan or a Chinese pot, the heating area can be enlarged. , The heating effect is more uniform, and the heating efficiency is improved. However, in the structural design of the above-mentioned double-ring burner, sufficient secondary air needs to be supplied to the combustion system due to considerations. There is a secondary air passage between the inner ring burner and the outer ring burner. The burner is a non-fully enclosed soup-proof structure. Although it can be equipped with a lower soup plate, due to structural requirements and secondary air intake requirements, the lower soup plate needs to be opened in several places. When the soup overflows, it will be from the inner ring The gap between the outer ring and the outer ring penetrates into the soup, and passes through the structural perforations of the lower soup plate, and finally accumulates in the base to provide a channel for secondary air intake, which is also equivalent to the channel through which the soup penetrates.

The technical problem to be solved by the present invention is to provide a high-efficiency double-ring combustion device in view of the deficiencies of the prior art, which can maintain the flame appearance of the inner flame of the inner ring and the outer flame of the outer ring, and retain a better heating area, better heat efficiency and heating Burner performance such as uniformity, and solve the problem of soup infiltration into the body of the gas furnace.

In order to solve the above technical problems, the present invention provides a high-efficiency double-ring combustion device, including: a mixing tube unit including an inner ring mixing tube and an outer ring mixing tube, one end of the inner ring mixing tube has an inner ring At the inlet end of the ring, the other end of the inner ring mixing tube has an inner ring buffer chamber, the inner ring buffer chamber is annular, and a first flow channel is formed in the inner ring mixing tube, and the first flow channel communicates with the inner ring Between the ring inlet end and the inner ring buffer chamber, one end of the outer ring mixing tube has an outer ring inlet end, and the other end of the outer ring mixing tube has an outer ring buffer chamber, the outer ring buffer chamber is circular The outer ring buffer chamber is arranged at intervals on the periphery of the inner ring buffer chamber, a second flow passage and an inner buffer chamber are formed in the outer ring mixing pipe, and the second flow passage and the inner buffer chamber are connected to Between the inlet end of the outer ring and the outer ring buffer chamber; a burner base, the burner base has a seat, the seat cover is placed on the inner ring buffer chamber and the outer ring buffer chamber of the mixing tube unit, The seat body is provided with a plurality of inner ring perforations and a plurality of outer ring perforations, the inner ring perforations correspond to the inner ring buffer chamber, and the outer ring perforations correspond to the outer ring buffer chamber; an inner ring burner , The inner ring burner is arranged on the burner base, the inner ring burner is in the shape of a ring, the inner ring burner has an inner ring runner, a plurality of inner ring through holes and a plurality of first channels, the inner ring A circulation channel and the inner ring through holes are formed in the inner ring burner, the inner ring channel is annular, the inner ring channel penetrates to the upper end of the inner ring burner, and the inner ring through holes are arranged at intervals In the inner ring burner, the upper ends of the inner ring through holes communicate with the inner ring flow channel, the lower ends of the inner ring through holes correspond to the inner ring perforations, and the first channels are arranged at intervals On the inner ring burner, the first channels extend along the radial direction of the inner ring burner, and the first channels penetrate to the inner and outer edges of the inner ring burner; an outer ring burner, the outer The ring burner is arranged on the burner base, the outer ring burner is arranged at intervals on the periphery of the inner ring burner, the outer ring burner is in the shape of a ring, and the outer ring burner has an outer ring runner, multiple An outer ring through hole and a plurality of second passages, the outer ring runner and the outer ring through holes are formed in the outer ring furnace head, the outer ring runner is annular, the outer ring runner penetrates the outer ring furnace At the upper end of the head, the outer ring through holes are arranged in the outer ring burner at intervals, the upper ends of the outer ring through holes are communicated with the outer ring runner, and the lower ends of the outer ring through holes are respectively connected to the outer ring Corresponding to the ring perforation, the second channels are arranged on the outer ring burner at intervals, the second channels extend along the radial direction of the outer ring burner, and the second channels penetrate to the outer ring burner Inner and outer edges, the second passages correspond to the first passages; an inner ring fire cover, the inner ring fire cover is in the form of a ring, the inner ring fire cover is placed on the inner ring burner, the inner ring The inner edge of the fire cover is provided with a plurality of inner flame holes at intervals, the inner flame holes penetrate from the inner edge of the inner ring fire cover to the inside of the inner ring fire cover, and the inner flame holes communicate with the inner ring flow channel; Ring fire cover, the outer ring fire cover is in the shape of a ring, the outer ring fire cover cover is placed on the outer ring burner, the outer edge of the outer ring fire cover is provided with a plurality of outer flame holes at intervals, and the outer flame holes are formed by the outer ring The outer edge of the fire cover penetrates to the inside of the outer ring fire cover, and the outer flame holes communicate with the outer ring runner; and a soup plate arranged on the periphery of the outer ring burner, and the inner edge of the soup plate Abutting against the outer edge of the outer ring burner, the soup plate is located above the burner seat.

The beneficial effects of the present invention are:

The high-efficiency double-ring combustion device of the present invention can maintain the flame appearance of the inner flame of the inner ring and the outer flame of the outer ring, and maintain the burner performance such as better heating area, better thermal efficiency and heating uniformity. The high-efficiency double-ring combustion device of the present invention achieves a fully enclosed soup-proof function. The flow channel through which the soup penetrates is completely blocked by the setting of the burner base and the soup plate. After the soup drips from above, the soup cannot penetrate into the body , Achieve better anti-soup function. Both the inner ring burner and the outer ring burner of the present invention are provided with a number of channels (first channel, second channel) through which the combustion system can take in secondary air from the outside of the combustion device. When the system is burning, it can pass through the first channel, The second channel supplies secondary air required for the combustion of the inner ring and the outer ring.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings about the present invention. However, the provided drawings are only for reference and description, and are not used to limit the present invention.

The following are specific specific examples to illustrate the disclosed embodiments of the present invention, and those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to actual dimensions, and are stated in advance. The following embodiments will further describe the related technical content of the present invention in detail, but the disclosed content is not intended to limit the protection scope of the present invention.

[Example]

1 to 5, the present invention provides a high-efficiency double-ring combustion device, including a mixing tube unit 1, a burner base 2, an inner ring burner 3, an outer ring burner 4, an inner ring fire cover 5. An outer ring fire cover 6 and a soup plate 7.

The mixing tube unit 1 includes an inner ring mixing tube 11 and an outer ring mixing tube 12 (please refer to FIGS. 6 to 8 together). The inner ring mixing tube 11 and the outer ring mixing tube 12 are hollow tube bodies. One end of the ring mixing pipe 11 has an inner ring inlet 111 for gas input. The other end of the inner ring mixing pipe 11 has an inner ring buffer chamber 112, the inner ring buffer chamber 112 is annular, and the upper end of the inner ring buffer chamber 112 forms an open shape. A first flow passage 113 is formed in the inner ring mixing pipe 11, and the first flow passage 113 is connected between the inner ring inlet 111 and the inner ring buffer chamber 112. The first flow passage 113 may be conical, that is, the first flow passage The inner diameter of 113 can be increased from the inner ring inlet end 111 toward the inner ring buffer chamber 112.

One end of the outer ring mixing pipe 12 has an outer ring inlet 121 for gas input. The other end of the outer ring mixing tube 12 has an outer ring buffer chamber 122. The outer ring buffer chamber 122 is in the shape of an annular shape. The upper end of the outer ring buffer chamber 122 forms an open shape. The outer ring buffer chambers 122 are arranged in the inner ring buffer chamber at intervals. The periphery of 112. A second flow passage 123 and an internal buffer chamber 124 are sequentially formed in the outer ring mixing pipe 12, the second flow passage 123 and the inner buffer chamber 124 are connected, and the second flow passage 123 and the inner buffer chamber 124 are connected to the outer ring Between the intake end 121 and the outer ring buffer chamber 122. The second flow passage 123 may have a conical shape, that is, the inner diameter of the second flow passage 123 may increase from the outer ring inlet end 121 toward the outer ring buffer chamber 122. The horizontal cross-section of the internal buffer chamber 124 may be square (as shown in FIG. 8 ), and the vertical cross-sectional area of the internal buffer chamber 124 is larger than the vertical cross-sectional area of the second flow channel 123.

The main form of secondary air intake of the present invention is side air intake. The air intake resistance is relatively large and the secondary air supplied is relatively insufficient. The air required by the entire combustion system still needs to be supplemented, so when the secondary air supply When the limit is reached, in order to reduce the gas value generated during the combustion of the system to within the standard specification, it is necessary to consider other ways to supply the air required by the system. For this reason, this embodiment can increase the primary air mixing ratio, which is another design direction to improve the excessively high air value of the system. However, if the primary air mixing ratio is increased too high, it may cause the phenomenon of flying fire, flameout explosion, etc., so in the design In the above, it is necessary to consider the buffer design to avoid the excessively fast fluid velocity of the mixed gas after air and gas are mixed. In this embodiment, an internal buffer chamber 124 is provided at the end of the outer ring mixing tube 12 to connect to the outer ring buffer chamber 122, and the inner ring mixing tube 11 An inner ring buffer chamber 112 is provided at the end of the, to prevent the flow of the mixed gas from being too fast after the air is mixed with the gas.

The burner base 2 has a base 21, the base 21 is circular, the base 21 is placed on the inner ring buffer chamber 112 and the outer ring buffer chamber 122 of the mixing tube unit 1, and the base 21 can be locked with screws The attached method is fixed to the mixing tube unit 1. The seat body 21 is provided with a plurality of inner ring perforations 22 and a plurality of outer ring perforations 23. The inner ring perforations 22 and the outer ring perforations 23 are all arc-shaped, and the inner ring perforations 22 are arranged at intervals. The center of the inner ring perforations 22 to the center of the seat body 21 are equidistant, the outer ring perforations 23 are arranged at intervals, and the center of the outer ring perforations 23 to the center of the seat body 21 are equidistant. The outer ring perforations 23 are located at the periphery of the inner ring perforations 22, the inner ring perforations 22 correspond to the inner ring buffer chamber 112, and the outer ring perforations 23 correspond to the outer ring buffer chamber 122 so that the inner ring is mixed The gas in the pipe 11 and the outer ring mixing pipe 12 can be transported upward through the inner ring perforations 22 and the outer ring perforations 23 respectively.

An inner ring stopper 8 can be further provided between the inner ring buffer chamber 112 of the inner ring mixing tube 11 and the burner base 2 to increase air tightness. The inner ring leakage stopper 8 has a plurality of through holes 81, and the through holes 81 correspond to the inner ring perforations 22, so that the gas in the inner ring mixing tube 11 can pass through the through holes 81 and the inner ring holes. The ring perforation 22 is conveyed upward.

The inner ring burner 3 is arranged on the burner base 2. The inner ring burner 3 is in the shape of a ring. The inner ring burner 3 has an inner ring runner 31, a plurality of inner ring through holes 32 and a plurality of first passages. 33. The inner ring flow channel 31 and the inner ring through holes 32 are formed in the inner ring burner 3. The inner loop flow passage 31 is annular, and the inner loop flow passage 31 penetrates to the upper end of the inner loop burner 3. The inner ring through holes 32 are arranged at intervals in the inner ring burner 3, the upper ends of the inner ring through holes 32 are communicated with the inner ring runner 31, and the lower ends of the inner ring through holes 32 are connected to the inner ring respectively. The perforations 22 correspond to each other, so that the gas in the inner ring mixing pipe 11 can be delivered to the inner ring flow channel 31 through the through holes 81, the inner ring perforations 22 and the inner ring through holes 32 in sequence. The first channels 33 are arranged on the inner ring burner 3 at intervals, the first channels 33 extend along the radial direction of the inner ring burner 3, and the first channels 33 penetrate into the inner ring burner 3 Edge and outer edge. The first channels 33 can be used as channels for guiding the soup to be discharged outward, and can also be used as channels for supplying secondary air.

The outer ring burner 4 is arranged on the burner base 2, and the outer ring burner 4 is arranged on the periphery of the inner ring burner 3 at intervals. The outer ring burner 4 is in the form of an annular body. The outer ring burner 4 has an outer ring runner 41, a plurality of outer ring through holes 42 and a plurality of second channels 43, the outer ring runner 41 and the outer ring through holes 42 is formed in the outer ring burner 4. The outer ring flow channel 41 is annular, and the outer ring flow channel 41 penetrates to the upper end of the outer ring burner 4. The outer ring through holes 42 are arranged at intervals in the outer ring burner 4, the upper ends of the outer ring through holes 42 are communicated with the outer ring runner 41, and the lower ends of the outer ring through holes 42 are respectively connected to the outer ring The perforations 23 correspond to each other, so that the gas in the outer ring mixing pipe 12 can be transported to the outer ring flow channel 41 through the outer ring perforations 23 and the outer ring through holes 42 in sequence. The second channels 43 are arranged on the outer ring burner 4 at intervals, and the second channels 43 extend along the radial direction of the outer ring burner 4, and the second channels 43 penetrate to the inner ring of the outer ring burner 4. Edge and outer edge, the second channels 43 correspond to the first channels 33. The second channels 43 can be used as channels for guiding the soup to be discharged outward, and can also be used as channels for supplying secondary air.

The inner ring fire cover 5 and the outer ring fire cover 6 are in ring shape, the inner ring fire cover 5 is placed on the inner ring burner 3, and the outer ring fire cover 6 is placed on the outer ring burner 4. The inner ring fire cover 5 adopts an inner flame design, and the outer ring fire cover 6 adopts an outer flame design, that is, a plurality of inner flame holes 51 are arranged at intervals on the inner edge of the inner ring fire cover 5, and the outer edge of the outer ring fire cover 6 is arranged at more intervals. Outer flame holes 61, the inner flame holes 51 penetrate from the inner edge of the inner ring fire cover 5 to the inside of the inner ring fire cover 5, the outer flame holes 61 penetrate from the outer edge of the outer ring fire cover 6 to the outer ring fire cover 6 Inside, the inner flame holes 51 and the outer flame holes 61 are communicated with the inner loop flow passage 31 and the outer loop flow passage 41, respectively. The inner flame holes 51 and the outer flame holes 611 can be formed by cutting grooves, tooth covers, or drilling, and the inner flame holes 51 and the outer flame holes 61 can also be inclined.

The soup plate 7 is in the shape of a ring, the soup plate 7 is arranged on the periphery of the outer ring burner 4, the inner edge of the soup plate 7 abuts the outer edge of the outer ring burner 4, and the soup plate 7 is located above the burner base 2. . A soup plate o-ring 9 can be further provided under the soup plate 7, and the soup plate o-ring 9 is located between the soup plate 7 and the burner base 2, and can be used to increase the effect of preventing leakage. When the combustion device of the present invention is assembled in a gas stove, the soup plate 7 is located between the table top 10 and the combustion device, the inner edge of the soup plate 7 abuts the outer edge of the outer ring burner 4, and the outer edge of the soup plate 7 By pressing against the top surface of the countertop 10, the soup plate 7 can be used to connect the countertop 10 and the burning device, and has the function of guiding the soup to flow outward to the countertop 10. An ignition needle 20 and a thermocouple 30 can also be arranged at the center of the high-efficiency double-ring combustion device.

[Beneficial effects of the embodiment]

The beneficial effect of the present invention is that the high-efficiency double-ring combustion device of the present invention can maintain the flame appearance of the inner flame of the inner ring and the outer flame of the outer ring, and maintain the burner performance such as better heating area, better heat efficiency and heating uniformity. The high-efficiency double-ring combustion device of the present invention achieves a fully enclosed soup-proof function. The flow channel through which the soup penetrates is completely blocked by the setting of the burner base and the soup plate. After the soup drips from above, the soup cannot penetrate into the body , Achieve better anti-soup function. Both the inner ring burner and the outer ring burner of the present invention are provided with a number of channels (first channel, second channel) through which the combustion system can take in secondary air from the outside of the combustion device. When the system is burning, it can pass through the first channel, The second channel supplies secondary air required for the combustion of the inner ring and the outer ring.

The content disclosed above is only a preferred and feasible embodiment of the present invention, and does not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made by using the description and schematic content of the present invention are included in the application of the present invention. Within the scope of the patent.

1: Mixing tube unit 11: Inner ring mixing tube 111: Inlet end of inner ring 112: inner ring buffer room 113: first runner 12: Outer ring mixing tube 121: Outer ring inlet 122: Outer ring buffer room 123: second runner 124: Internal buffer room 2: burner base 21: Seat 22: inner ring perforation 23: Outer ring perforation 3: inner ring burner 31: Inner circulation channel 32: inner ring through hole 33: First channel 4: Outer ring burner 41: Outer circulation channel 42: Outer ring through hole 43: second channel 5: Inner ring fire cover 51: inner flame hole 6: Outer ring fire cover 61: Outer Flame Hole 7: soup plate 8: Inner ring stopper 81: Through hole 9: Soup plate stop ring 10: Countertop 20: ignition needle 30: Thermocouple

Figure 1 is a three-dimensional exploded view of the high-efficiency double-ring combustion device of the present invention.

Figure 2 is a perspective view of the high-efficiency double-ring combustion device of the present invention.

Fig. 3 is a perspective view of the high-efficiency double-ring combustion device of the present invention installed in a gas furnace.

Figure 4 is a cross-sectional view (1) of the high-efficiency double-ring combustion device of the present invention.

Figure 5 is a cross-sectional view (2) of the high-efficiency double-ring combustion device of the present invention.

Figure 6 is a three-dimensional cross-sectional view (1) of the mixing tube unit of the present invention.

Fig. 7 is a three-dimensional cross-sectional view (2) of the mixing tube unit of the present invention.

Figure 8 is a three-dimensional cross-sectional view of the mixing tube unit of the present invention (3).

1: Mixing tube unit

11: Inner ring mixing tube

111: Inlet end of inner ring

112: inner ring buffer room

12: Outer ring mixing tube

121: Outer ring inlet

122: Outer ring buffer room

2: burner base

21: Seat

22: inner ring perforation

23: Outer ring perforation

3: inner ring burner

31: Inner circulation channel

32: inner ring through hole

33: First channel

4: Outer ring burner

41: Outer circulation channel

42: Outer ring through hole

43: second channel

5: Inner ring fire cover

51: inner flame hole

6: Outer ring fire cover

61: Outer Flame Hole

7: soup plate

8: Inner ring stopper

81: Through hole

9: Soup plate stop ring

20: ignition needle

30: Thermocouple

Claims (7)

A high-efficiency double-ring combustion device includes: a mixing tube unit, the mixing tube unit includes an inner ring mixing tube and an outer ring mixing tube, one end of the inner ring mixing tube has an inner ring inlet end, the inner ring mixing tube The other end has an inner ring buffer chamber, the inner ring buffer chamber is annular, the inner ring mixing tube forms a first flow path, the first flow path is connected to the inner ring inlet end and the inner ring buffer chamber In between, one end of the outer ring mixing tube has an outer ring inlet end, the other end of the outer ring mixing tube has an outer ring buffer chamber, the outer ring buffer chamber is annular, the outer ring buffer chamber is separated Disposed on the periphery of the inner ring buffer chamber, a second flow passage and an inner buffer chamber are formed in the outer ring mixing pipe, and the second flow passage and the inner buffer chamber are connected to the inlet end of the outer ring and the outer ring Between the buffer chambers; a furnace head seat, the furnace head seat has a seat body, the seat body cover is placed on the inner ring buffer chamber and the outer ring buffer chamber of the mixing tube unit, the seat body is provided with a plurality of inner ring perforations And a plurality of outer ring perforations, the inner ring perforations are corresponding to the inner ring buffer chamber, the outer ring perforations are corresponding to the outer ring buffer chamber; an inner ring burner, the inner ring burner is arranged in the furnace On the head base, the inner ring burner is in the form of an annular body, the inner ring burner has an inner ring runner, a plurality of inner ring through holes and a plurality of first channels, the inner ring runner and the inner ring through holes form In the inner ring burner, the inner ring runner is annular, the inner ring runner penetrates to the upper end of the inner ring burner, the inner ring through holes are arranged in the inner ring burner at intervals, and the inner ring The upper end of the ring through hole communicates with the inner ring flow channel, the lower ends of the inner ring through holes correspond to the inner ring perforations, the first channels are arranged on the inner ring burner at intervals, and the first The channels extend along the radial direction of the inner ring burner, and the first channels penetrate to the inner and outer edges of the inner ring burner; an outer ring burner, the outer ring burner is arranged on the burner base , The outer ring burner is arranged at intervals on the periphery of the inner ring burner, the outer ring burner is in the shape of a ring, the outer ring burner has an outer ring runner, a plurality of outer ring through holes and a plurality of second The channel, the outer ring runner and the outer ring through holes are formed in the outer ring burner, the outer ring runner is annular, the outer ring runner penetrates to the upper end of the outer ring burner, the outer ring through holes Are arranged in the outer ring burner at intervals, the upper ends of the outer ring through holes are communicated with the outer ring runner, the lower ends of the outer ring through holes correspond to the outer ring perforations, and the second channels Are arranged at intervals on the outer ring burner, the second channels extend along the radial direction of the outer ring burner, the second channels penetrate to the inner and outer edges of the outer ring burner, and the second channels The passage corresponds to the first passages; an inner ring fire cover, the inner ring fire cover is in the shape of a ring, the inner ring fire cover is placed on the inner ring burner, and the inner edge of the inner ring fire cover is arranged with a plurality of inner Flame holes, the inner flame holes penetrate from the inner edge of the inner ring flame cover to the inside of the inner ring flame cover, the inner flame holes communicate with the inner ring runner; an outer ring flame cover, the outer ring flame cover is ring-shaped Body, the outer ring fire cover is placed on the outer ring burner, the outer edge of the outer ring fire cover is provided with a plurality of outer flame holes at intervals, and the outer flame holes penetrate from the outer edge of the outer ring fire cover to the outer ring Inside the fire cover, the outer flame holes communicate with the outer ring flow channel; and a soup plate arranged on the periphery of the outer ring burner, and the inner edge of the soup plate abuts against the outer ring burner On the outer edge, the soup plate is located above the burner base. The high-efficiency double-ring combustion device described in the first item of the scope of patent application, wherein the first flow passage is conical, and the inner diameter of the first flow passage increases from the inlet end of the inner ring toward the buffer chamber of the inner ring. The high-efficiency double-ring combustion device described in the first item of the scope of patent application, wherein the second flow passage is conical, and the inner diameter of the second flow passage increases from the inlet end of the outer ring toward the buffer chamber of the outer ring, The horizontal cross-section of the internal buffer chamber is square, and the vertical cross-sectional area of the internal buffer chamber is larger than the vertical cross-sectional area of the second flow channel. For the high-efficiency double-ring combustion device described in item 1 of the scope of the patent application, an inner-ring leak-proof piece is arranged between the inner-ring buffer chamber of the inner-ring mixing tube and the burner base, and the inner-ring leak-proof piece has a plurality of Through holes, the through holes respectively correspond to the inner ring perforations. According to the high-efficiency double-ring combustion device described in item 1 of the scope of patent application, a soup pan stop ring is arranged under the soup plate, and the soup plate stop ring is located between the soup plate and the burner base. In the high-efficiency double-ring combustion device described in the first item of the patent application, the inner ring perforations and the outer ring perforations are all arc-shaped, and the outer ring perforations are located at the periphery of the inner ring perforations. For the high-efficiency double-ring combustion device described in item 1 of the scope of patent application, the center of the inner ring perforations is equidistant from the center of the seat body, and the center of the outer ring perforations are equidistant from the center of the seat body.

Images