A poly-energy pot stand with high combustion efficiency

Abstract

The present invention provides an energy-gathering pot support with high combustion efficiency, which includes pot leg pieces, and an annular upper plate and a lower plate arranged successively from top to bottom. A chamber is formed between the upper plate and the lower plate. The pot leg pieces pass through the upper plate and the lower plate and are welded to them one by one. The outer ring of the upper plate is higher than the inner ring. The upper surface of the upper plate radially forms a corrugated surface. The number of wave crests of the corrugated surface is not less than two, the number of wave troughs is not less than two, and the depth from the connection line of at least two wave crests to the wave trough is greater than 4 mm. By designing a multi-layer heat insulation structure, heat dissipation of the pot support to the outside is prevented. At the same time, the air inlet holes and ventilation holes adopt a shutter-type swirling air intake for preheating. The secondary air flows around in the air intake chamber formed by the bottom plate and the third plate, so that the secondary air has a longer time to absorb heat, greatly strengthening the heat exchange intensity with the wall. Then, under the guidance of the ventilation holes of the third plate, the secondary air enters the preheating chamber and flows around, strengthening the heat exchange again and making full use of the waste heat.

Description

Technical Field

[0001] The present invention relates to the technical field of gas cookers, and particularly to an energy-gathering pot support with high combustion efficiency. Background Art

[0002] With the gradual consumption of fossil energy, the call for energy conservation and emission reduction from humans is getting louder. Cookers are essential appliances in people's lives, and their demand and usage are very large. Therefore, it is very necessary to develop products with high efficiency, low emissions, and less consumables.

[0003] Existing pot supports, such as an energy-gathering and heat-insulating pot support with the Chinese patent publication number CN205425074U, "comprises an energy-gathering ring and at least three supporting feet fixed on the energy-gathering ring; the multiple supporting feet can support the energy-gathering ring to be stably placed on the cooker panel; the energy-gathering ring is a conical ring with a larger upper part and a smaller lower part, which includes an arc-shaped ring part in the middle, an extension part vertically connected above the arc-shaped ring part, and a bending part connected below the arc-shaped ring part." However, pot supports such as the above patent application are generally solid integrally formed bodies, and the heat conducted by the pot support is not fully utilized. At the same time, heat dissipation is large, the efficiency is low, and the effect on improving the combustion efficiency is limited. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides an energy-gathering pot support with high combustion efficiency, and solves the problems raised in the above background art.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: An energy-gathering pot support with high combustion efficiency includes pot foot pieces, and a ring-shaped upper plate and a lower plate arranged in sequence from top to bottom. A chamber is formed between the upper plate and the lower plate. The pot foot pieces pass through the upper plate and the lower plate and are welded to them one by one. The outer ring height of the upper plate is higher than the inner ring. The upper surface of the upper plate radially forms a corrugated surface. The number of wave crests of the corrugated surface is not less than two, the number of wave troughs is not less than two, and the depth from the connection line of at least two wave crests to the wave trough is greater than 4 mm.

[0008] Preferably, the energy-gathering pot support further includes a second plate and a third plate. The upper plate, the second plate, the third plate, and the lower plate are arranged in sequence from top to bottom. The inner and outer rings of the upper plate and the second plate are welded into a whole. An insulating cavity is formed between the upper plate and the second plate. The pot leg pieces pass through the upper plate, the second plate, the third plate, and the lower plate in sequence and are welded to them one by one. The upper plate and the second plate are not directly connected to the third plate and the lower plate. The inner and outer rings of the third plate are not in direct contact with the lower plate. A preheating cavity is formed between the third plate and the second plate. An air inlet cavity is formed between the third plate and the lower plate. An air inlet and an air outlet are formed between the inner and outer rings of the lower plate and the second plate. A plurality of air inlet holes and ventilation holes are respectively formed at the bottoms of the lower plate and the third plate.

[0009] Preferably, the undulation depth of the wave crests and wave troughs of the corrugated surface is greater than the material thickness of the upper plate.

[0010] Preferably, the plurality of air inlet holes and ventilation holes are evenly distributed at equal angles around the center of the pot support. The air inlet holes and the ventilation holes are louver-shaped, and the opening directions of the air inlet holes and the ventilation holes are the same along the circumferential direction.

[0011] Preferably, the air inlet holes are arranged below the air outlet at the bottom of the lower plate.

[0012] Preferably, the slit width of the air outlet is greater than the slit width of the air inlet.

[0013] Preferably, the outer ring of the upper plate is square or similar to a square.

[0014] Preferably, the number of the pot leg pieces is four, and the four pot leg pieces are distributed at the four corners of the square upper plate. The pot leg pieces are connected to the lower plate, and a foot pad connected to the pot leg pieces is arranged at the bottom of the lower plate.

[0015] (III) Beneficial effects

[0016] The present invention provides an energy-gathering pot support with high combustion efficiency, which has the following beneficial effects:

[0017] 1. For the energy-gathering pot support with high combustion efficiency, by designing a multi-layer heat insulation structure, heat dissipation of the pot support to the outside is prevented. At the same time, the air inlet holes and the ventilation holes adopt louver-type swirling air intake preheating. The secondary air flows in a circular pattern in the air inlet cavity formed by the bottom plate and the third plate, so that the secondary air has a longer time to absorb heat, greatly strengthening the heat exchange intensity with the wall. Then, under the guidance of the ventilation holes on the third plate, the secondary air enters the preheating cavity and flows in a circular pattern, further strengthening the heat exchange, making full use of the waste heat. At the same time, due to the structural characteristics of the louver, the radiation energy above is blocked from directly radiating downward in the vertical direction to dissipate heat, and the gas can enter the pot rack tangentially along the horizontal plane circumference.

[0018] 2. The energy - concentrating pot support with high combustion efficiency has a corrugated surface on the upper surface of the upper plate, effectively increasing the surface area of the upper plate of the pot rack and enhancing the radiation intensity of the upper plate surface on the bottom of the pot and the gas - fuel mixture. The wave crests of the corrugations are close to the combustion area, absorbing radiant heat and convective heat of the combustion gas to form a heat - concentrating high - temperature area. After the temperature of the wave crests rises, it radiates heat to heat the mixed gas, strengthening combustion. At the wave troughs, due to the slower air flow velocity, the gas in the wave troughs can absorb a large amount of radiant heat to form a high - temperature flue gas area, strengthening the combustion of the mixed gas above through convective heat transfer. At the same time, because the thermal conductivity coefficient of the gas is relatively low and the air flow velocity in the wave troughs is slow, it effectively blocks the convective heat transfer between the high - temperature flue gas and the upper plate surface. The undulating of the corrugations strengthens the disturbance of the gas - fuel mixture, reduces the air flow velocity on the surface of the plate, making the heat exchange time longer, the combustion more complete, the temperature higher, and the CO flue gas lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a side cross - sectional view of the present invention;

[0020] Figure 2 is a diagonal cross - sectional view of the present invention;

[0021] Figure 3 is a top view of the present invention;

[0022] Figure 4 is a bottom view of the present invention;

[0023] Figure 5 is an axonometric cross - sectional view of the present invention;

[0024] Figure 6 In the present invention, Figure 5 is an enlarged view of part A in

[0025] In the figure: 1 upper plate, 2 second plate, 3 third plate, 4 lower plate, 5 pot leg piece, 6 foot pad, 7 heat - insulation cavity, 8 air - intake cavity, 9 pre - heating cavity, 10 corrugated surface, 11 air - intake hole, 12 ventilation hole, 13 air - intake port, 14 air - outlet port, 15 air - outlet slit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] An embodiment of the present invention provides an energy - concentrating pot support with high combustion efficiency. As Figures 1-6 shown, it includes a pot leg piece 5 and a ring - shaped upper plate 1, a second plate 2, a third plate 3, and a lower plate 4 arranged in sequence from top to bottom.

[0027] As Figure 1 and Figure 3As shown, the outer ring of the upper plate 1 is higher than the inner ring. The upper surface of the upper plate 1 radially forms a corrugated surface 10. The number of wave crests of the corrugated surface 10 is not less than two, and the number of wave troughs is not less than two. And the depth from the connection line of at least two wave crests to the wave trough is greater than 4 mm. The undulation depth of the wave crests and wave troughs of the corrugated surface 10 is greater than the material thickness of the upper plate. The outer ring of the upper plate 1 is square or similar to a square.

[0028] By setting the corrugated surface 10 on the upper surface of the upper plate 1, the surface area of the upper plate 1 of the pot rack is effectively increased, and the radiation intensity of the upper plate 1 facing the bottom of the pot and the gas mixture is enhanced. The wave crests of the corrugations are close to the combustion area, absorbing the radiant heat and the convective heat of the combustion gas to form a heat-accumulating high-temperature area. After the temperature of the wave crests rises, the mixed gas is heated by radiation to strengthen combustion; at the wave troughs, due to the slower air flow velocity, the gas in the wave troughs can absorb a large amount of radiant heat to form a high-temperature flue gas area, strengthening the combustion of the mixed gas above through convective heat transfer. At the same time, because the thermal conductivity coefficient of the gas is low and the air flow velocity in the wave troughs is slow, the convective heat transfer between the high-temperature flue gas and the upper plate surface is effectively blocked; the undulation of the corrugations strengthens the disturbance of the gas mixture, reduces the air flow velocity on the surface of the plate, makes the heat exchange time longer, the combustion more complete, the temperature higher, and the CO flue gas lower.

[0029] The inner and outer rings of the upper plate 1 and the second plate 2 are welded into a whole, improving the rigidity of the upper plate 1 and preventing deformation due to excessive temperature during the use of the pot support. An insulating cavity 7 is formed between the upper plate 1 and the second plate 2. At the same time, the edge height after welding is lower than the cavity thickness, forming a step.

[0030] As Figures 2-3 As shown, the pot feet 5 pass through the upper plate 1, the second plate 2, the third plate 3, and the lower plate 4 and are welded to them one by one. The pot feet 5 are used to support the upper plate 1, the second plate 2, the third plate 3, and the lower plate 4. The number of pot feet 5 is four, and the four are distributed at the four corners of the square upper plate 1. The pot feet 5 are connected to the lower plate 4, and the bottom of the lower plate 4 is provided with a foot pad 6 connected to the pot feet 5. The lower plate 4 and the upper plate 1 are connected by several pot feet 5 with screws to the foot pads 6, reducing the contact area and heat conduction.

[0031] The upper plate 1 and the second plate 2 are not directly connected to the third plate 3 and the lower plate 4 to prevent heat from being directly transferred to the lower plate 4 through heat conduction, resulting in heat loss. The inner and outer rings of the third plate 3 are not in direct contact with the lower plate 4. The outer ring of the lower plate 4 is disconnected from the upper plate 1, the second plate 2, and the third plate 3, blocking the downward heat conduction and dissipation, and improving the utilization of heat. A preheating cavity 9 is formed between the third plate 3 and the second plate 2, an air inlet cavity 8 is formed between the third plate 3 and the lower plate 4, and air inlets 13 and air outlets 14 are formed between the inner and outer rings of the lower plate 4 and the second plate 2.

[0032] One end of the third plate 3 close to the air outlet 14 can be welded to the lower plate 4 by spot welding. The third plate 3 and the lower plate 4 are spot welded to form intermittent air outlet seams 15, and the height of the air outlet seams 15 is lower than that of the air outlet 14. Both ends of the preheating chamber 9 are correspondingly connected to the air inlet 13 and the air outlet 14 respectively, and both ends of the air inlet chamber 8 are also correspondingly connected to the air inlet 13 and the air outlet 14.

[0033] As Figure 1 shown, the air inlet 13 is located at the outer ring step of the lower plate 4 and the upper plate 1, and it is a non-touching seam. The slit width of the air outlet 14 is greater than the slit width of the air inlet 13. The slit width of the air outlet 14 is 2-5 mm.

[0034] As Figure 1 and Figure 4 shown, a plurality of air inlet holes 11 and ventilation holes 12 are respectively provided at the bottoms of the lower plate 4 and the third plate 3.

[0035] As Figure 6 shown, a plurality of air inlet holes 11 and ventilation holes 12 are evenly distributed at equal angles around the center of the pot support. The air inlet holes 11 and the ventilation holes 12 are louvers, and the opening directions of the air inlet holes 11 and the ventilation holes 12 are the same in the circumferential direction, either counterclockwise or clockwise.

[0036] The air inlet holes 11 are provided at the bottom of the lower plate 4 below the air outlet 14.

[0037] As Figure 6 shown, cold air enters the air inlet chamber 8 formed between the lower plate 4 and the third plate 3 through the air inlet holes 11, circulates and rises. The cold air is preheated due to the radiation and convective heat transfer of this cavity, and then flows into the preheating chamber 9 formed between the third plate 3 and the second plate 2 through the louver ventilation holes 12 distributed around the third plate 3. The surrounding walls of the cavity radiate and convectively heat the air, and then flow out from the air outlet 14 at the inner ring of the lower plate 4 and the second plate 2 to supply combustion.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polyenergy pot stand with high combustion efficiency, characterized in that: It includes pot feet pieces (5) and a ring-shaped upper plate (1), a lower plate (4) arranged successively from top to bottom. A chamber is formed between the upper plate (1) and the lower plate (4). The pot feet pieces (5) pass through the upper plate (1), the lower plate (4) and are welded to them one by one. The outer ring of the upper plate (1) is higher than the inner ring. A corrugated surface (10) is radially formed on the upper surface of the upper plate (1). The number of wave crests of the corrugated surface (10) is not less than two, the number of wave troughs is not less than two, and the depth from the connection line of at least two wave crests to the wave trough is greater than 4 mm. The energy-gathering pot support further includes a second plate (2) and a third plate (3). The upper plate (1), the second plate (2), the third plate (3), and the lower plate (4) are arranged successively from top to bottom. The inner and outer rings of the upper plate (1) and the second plate (2) are welded into a whole. An insulating chamber (7) is formed between the upper plate (1) and the second plate (2). The pot feet pieces (5) pass through the upper plate (1), the second plate (2), the third plate (3), the lower plate (4) and are welded to them one by one. The upper plate (1) and the second plate (2) are not directly connected to the third plate (3) and the lower plate (4). The inner and outer rings of the third plate (3) are not in direct contact with the lower plate (4). A preheating chamber (9) is formed between the third plate (3) and the second plate (2). An air inlet chamber (8) is formed between the third plate (3) and the lower plate (4). An air inlet (13) and an air outlet (14) are formed between the inner and outer rings of the lower plate (4) and the second plate (2). A number of air inlet holes (11) and ventilation holes (12) are respectively opened at the bottoms of the lower plate (4) and the third plate (3). The undulating depth of the wave crests and wave troughs of the corrugated surface (10) is greater than the material thickness of the upper plate. The number of the air inlet holes (11) and the ventilation holes (12) are evenly distributed at equal angles around the center of the pot support. The air inlet holes (11) and the ventilation holes (12) are louvers. The opening directions of the air inlet holes (11) and the ventilation holes (12) are the same along the circumferential direction. The air inlet holes (11) are arranged below the air outlet (14) at the bottom of the lower plate (4). The slit width of the air outlet (14) is greater than the slit width of the air inlet (13).

2. The energy-gathering pot support with high combustion efficiency according to claim 1, characterized in that: The outer ring of the upper plate (1) is square or similar to a square.

3. The energy-gathering pot support with high combustion efficiency according to claim 2, wherein: The number of the pot feet pieces (5) is four, and the four are distributed at the four corners of the square upper plate (1). The pot feet pieces (5) are connected to the lower plate (4), and a foot pad (6) connected to the pot feet pieces (5) is arranged at the bottom of the lower plate (4).

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