A pot rack

Abstract

The utility model discloses a kind of pot supports, including the air supplement ring around combustor, the energy-gathering disc connected on the top edge of air supplement ring, and the cavity shell around the periphery of energy-gathering disc;Air supplement ring has multiple air supply holes arranged along circumference, so that the air of outside enters the inner space of air supplement ring, the inner edge of energy-gathering disc and the outer circumference between combustor have ventilation gap, so that part of air of inner space provides supply to the injector pipe of combustor bottom, another part of air provides supply to the combustion place of combustor top fire cover through ventilation gap;The internal space defined by cavity shell and energy-gathering disc forms the heat storage cavity around base ring and absorbs energy-gathering structure heat, the bottom of cavity shell has heat exhaust port, which is communicated with heat storage cavity and base ring peripheral space, for heating air that will enter inner space.The utility model has the beneficial effect that energy-gathering heat loss can be reduced, and the air of supplement can be preheated to improve the combustion effect of combustor.

Description

Technical Field

[0001] This utility model relates to a pot rack, specifically a pot rack that can improve the combustion quality of a burner. Background Technology

[0002] In existing technologies, pot supports for gas stoves, especially those with energy-concentrating functions, generally suffer from low heat utilization efficiency. On the one hand, outside air flows into the internal space of the pot support based on pressure difference to supply air to the burner; however, the excessive supply of cold air (especially in the cold winter) dilutes the temperature of the flame core area, resulting in increased carbon monoxide emissions and decreased thermal efficiency. On the other hand, during the process of the pot support absorbing heat and concentrating energy, the heat in the high-temperature core area is scattered at a large angle to the surrounding environment through radiation, continuously generating unsteady heat loss. Utility Model Content

[0003] The purpose of this invention is to provide a pot frame that can reduce heat loss during energy concentration and preheat the supplementary air, thereby improving the combustion effect of the burner.

[0004] This utility model is achieved through the following technical solution.

[0005] A cooker frame includes a gas supply ring surrounding a burner, a concentrating plate connected to the top edge of the gas supply ring, and a cavity shell surrounding the periphery of the concentrating plate. The gas supply ring has multiple circumferentially arranged air supply holes, allowing outside air to enter the inner space of the gas supply ring. A ventilation gap exists between the inner edge of the concentrating plate and the outer periphery of the burner, allowing a portion of the air in the inner space to supply the injector tube at the bottom of the burner, and another portion of the air to supply the combustion area of ​​the burner's top flame cap through the ventilation gap. The internal space defined by the cavity shell and the concentrating plate forms a heat storage cavity surrounding the gas supply ring and absorbing heat from the concentrating plate. The bottom of the cavity shell has a heat exhaust port communicating with the heat storage cavity and the outer space of the gas supply ring, used to heat the air about to enter the inner space.

[0006] As a further improvement of this utility model, the cavity shell surrounds the energy-concentrating disk and part of the air supply ring, such that the upper part of the air supply hole is located inside the heat storage cavity.

[0007] As a further improvement of this utility model, the cavity shell includes a disk portion integrally connected to the outer edge of the energy-concentrating disk and extending outward, and an annular portion that bends downward and extends from the outer edge of the disk portion. A gap exists between the bottom edge of the annular portion and the gas-replenishing ring, forming the heat exhaust port.

[0008] As a further improvement of this utility model, the energy-concentrating disk gradually decreases radially inward from the outer edge at the highest position to the middle diameter ring at the lowest position, and then gradually increases radially inward from the middle diameter ring, so that the energy-concentrating disk forms a recessed area surrounding the burner in the middle diameter ring.

[0009] As a further improvement of this utility model, the middle diameter ring of the energy-concentrating disk is connected to the top edge of the air-replenishing ring.

[0010] As a further improvement of this utility model, the energy-concentrating disk includes an arc-shaped portion extending from its outer edge to the middle diameter ring and transitioning in an arc shape, an inclined portion gradually rising inward from the middle diameter ring and transitioning at an incline, and a horizontal portion transitioning from the inner edge of the inclined portion to the inner edge of the energy-concentrating disk.

[0011] As a further improvement of this utility model, it also includes a plurality of brackets spaced circumferentially and disposed on the energy-concentrating plate, the brackets being used to support the cookware.

[0012] As a further improvement of this utility model, the energy-concentrating plate has a slot that allows the support portion to pass through, and the portion of the support located below the energy-concentrating plate forms a foot that provides support for the pot rack.

[0013] As a further improvement of this utility model, the support foot has a groove that is fitted into the air replenishing ring, such that a part of the support foot is located in the inner space of the air replenishing ring and another part is located in the outer space of the air replenishing ring.

[0014] As a further improvement of this utility model, the air replenishment ring and the energy concentrating disk are integrally connected, or fixedly connected, or detachably connected.

[0015] The beneficial effects of this utility model are: The annular heat storage cavity, formed by the shell and the energy-concentrating disk, continuously absorbs the conductive heat and radiant waste heat from the energy-concentrating disk. The high-temperature air accumulated in the heat storage cavity overflows from the heat exhaust port under the drive of natural convection, and undergoes forced turbulent mixing with the air flowing through the heat exhaust port and about to enter the inner space, preheating it before it enters the inner space. Furthermore, the air dynamically absorbs the heat at the heat exhaust port as it flows through the inner space, forming a directional heat transfer channel, thereby effectively blocking the heat diffusion of the heat storage cavity to the outside. The preheated air entering the inner space, when mixed with the combustion gas in the injector tube during the primary air supply, increases the initial reaction temperature, shortens the ignition delay period, and expands the flame stability boundary. At the same time, the secondary air supply to the flame cap area can suppress the occurrence of the critical temperature for soot formation. The heat storage chamber continuously releases heat through the heat outlet, which simultaneously consumes the heat energy stored in the chamber, smoothing the overall temperature gradient of the chamber shell. This effectively avoids the expansion and deformation differences of the baffle and the energy-concentrating plate due to local overheating. Especially when the two are separate structures, it can not only maintain the service life of the boiler frame from a structural perspective, but also prevent structural gaps in the baffle and the energy-concentrating plate from weakening their energy-concentrating effect. Because of the location of the heat exhaust port, a vertical temperature gradient is formed in the air entering the inner space, resulting in the temperature of the secondary air supply burner cap being higher than that of the primary air supply injector. The burner cap area receives a higher temperature secondary air supply, which directly enhances the oxidation reaction intensity in the flame core area, promotes the full decomposition of fuel molecules and the efficiency of free radical chain reaction, and eliminates the formation of soot caused by local oxygen deficiency. The primary air supply to the injector retains a higher density because it is in a relatively low temperature zone, maintaining the suction power of the injector for the fuel and avoiding excessive preheating that reduces the injection efficiency. At the same time, moderate preheating can also prevent the fuel from condensing. Attached Figure Description

[0016] The preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of this utility model, wherein: Figure 1 This is a schematic diagram of the pot rack from one perspective. Figure 2 This is a schematic diagram of the pot rack from another perspective. Figure 3 A partial cross-sectional schematic view of the boiler frame and burner; Figure 4 A schematic diagram of the boiler frame, burner, and air supply; Figure 5 This is a schematic diagram of an energy-concentrating disk; Figure 6 This is a schematic diagram of the support. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0019] A pot rack, as shown Figures 1-6It includes an air supply ring 1 surrounding the burner 4, an energy-concentrating disk 2 connected to the top edge of the air supply ring 1, and a cavity shell 3 surrounding the periphery of the energy-concentrating disk 2.

[0020] The air supply ring 1 is a thin-walled annular structure with a certain height. It has multiple circumferentially arranged air supply holes a, allowing outside air to enter the inner space r of the air supply ring 1. The diaphragm is a disc-shaped structure with a central hole, which reduces heat loss and improves thermal efficiency by concentrating energy. A ventilation gap d exists between its inner edge and the outer periphery of the burner 4, allowing a portion of the air in the inner space r to supply the injector 41 at the bottom of the burner 4, and another portion to supply the combustion area of ​​the burner 42 at the top of the burner 4 through the ventilation gap d. The cavity shell 3 is an annular structure, forming a heat storage cavity c with the internal space defined by the energy-concentrating disk 2. The heat storage cavity c surrounds the air supply ring 1 and absorbs heat from the energy-concentrating disk 2. The bottom of the cavity shell 3 has a heat exhaust port h connecting the heat storage cavity c and the outer space of the air supply ring 1, used to heat the air about to enter the inner space r.

[0021] In this embodiment, the air supply hole a of the air supply ring 1 allows outside air to enter the inner space r of the air supply ring 1 in a measured amount driven by the pressure difference. At the same time, the air supply ring 1 can play a throttling role to limit the total amount of air supplied to avoid excessive air supply impacting the flame core area and ensure the combustion stability of the burner cap 42. Part of the air entering the inner space r is supplied to the inlet of the injector tube 41 to provide a smooth primary air supply for the gas mixing section, and the other part is supplied to the outer flame zone of the burner cap 42 for secondary air supply through the ventilation gap d.

[0022] The energy-concentrating plate 2 serves as a dual-function thermal component: firstly, it reflects and redistributes flame heat radiation, focusing high-temperature radiation energy onto the bottom of the pot to improve heat conduction efficiency; secondly, it acts as a solid thermal bridge, using the thermal conductivity of its plate material to continuously introduce excess surface heat into the heat storage cavity c of the cavity shell 3, which in turn stores heat to enhance the energy-concentrating effect of the energy-concentrating plate 2. The annular heat storage cavity c, formed by the shell 3 and the energy-concentrating disk 2, continuously absorbs the conductive heat and radiant waste heat from the energy-concentrating disk 2. The high-temperature air accumulated in the heat storage cavity c overflows from the heat exhaust port h under the drive of natural convection, and undergoes forced turbulent mixing with the air flowing through the heat exhaust port h and about to enter the inner space r, so that it is preheated and then enters the inner space r. Furthermore, the air dynamically absorbs the heat at the heat exhaust port h when flowing through the inner space r, forming a heat directional transfer channel, thereby effectively blocking the heat of the heat storage cavity c from diffusing to the outside. The air that has been preheated and enters the inner space r, when mixed with the combustion gas in the injector tube 41 during the primary air supply, increases the initial reaction temperature, shortens the ignition delay period, and expands the flame stability boundary. At the same time, the secondary air supply in the burner cap 42 area can suppress the occurrence of the critical temperature for soot formation. In addition, the continuous release of heat from the heat storage chamber c through the heat exhaust port h simultaneously consumes the thermal energy stored in the chamber, smoothing the overall temperature gradient of the chamber shell 3. This effectively prevents the expansion and deformation of the baffle and the energy-concentrating plate 2 due to local overheating. Especially when the two are separate structures, this not only maintains the service life of the boiler frame from a structural perspective, but also prevents structural gaps in the baffle and the energy-concentrating plate 2 from weakening their energy-concentrating effect.

[0023] Furthermore, it should be noted that due to the location of the heat exhaust port h, a vertical temperature gradient is formed in the air entering the inner space r, resulting in the temperature of the secondary air supply burner cap 42 being higher than that of the primary air supply ejector tube 41. The higher temperature secondary air supply to the burner cap 42 directly enhances the oxidation reaction intensity in the flame core area, promotes the full decomposition of gas molecules and the efficiency of free radical chain reaction, and eliminates the formation of soot caused by local oxygen deficiency. The primary air supply to the ejector tube 41 retains a higher density due to being in a relatively low temperature zone, maintaining the suction power of the ejector tube 41 for the gas and avoiding excessive preheating that reduces the ejection efficiency. At the same time, moderate preheating can also prevent gas condensation.

[0024] In this embodiment, the cavity shell 3 and the energy-concentrating disk 2 are integrally connected. The cavity shell 3 surrounds the energy-concentrating disk 2 and part of the air supply ring 1, and the upper part of the air supply hole a is located inside the heat storage cavity c. The upper part of the air supply hole a being located inside the heat storage cavity c causes the airflow space and the space of the heat storage cavity c to partially overlap. When outside air flows through this overlapping area, the high-temperature hot air in the heat storage cavity c is forced into the airflow, forming turbulence, thereby improving the heat exchange effect. Simultaneously, the air continuously carries away the heat from the heat storage cavity c, blocking its diffusion path to the periphery of the air supply ring 1. The lower part of the air supply hole a continuously introduces room-temperature air, which mixes with the preheated airflow in the upper half within the inner space r of the air supply ring 1, thus forming a vertical temperature gradient. This ensures combustion stability and maintains structural temperature equilibrium through the convection of hot and cold air, synergistically suppressing metal thermal expansion and deformation.

[0025] In this embodiment, the cavity shell 3 includes a disk portion 31 and an annular portion 32, which are integrally connected and both are thin-walled structures. The disk portion 31 is integrally connected to the top edge of the energy-concentrating disk 2 and extends outward from its top edge. The annular portion 32 is formed by bending downward from the outer edge of the disk portion 31 and extending downward. Furthermore, there is a gap between the bottom edge of the annular portion 32 and the air-filling ring 1, forming a heat dissipation port h. The disk portion 31 and the top edge of the energy-concentrating disk 2 are fixedly connected to form a horizontal heat-conducting surface, which quickly introduces the heat accumulated in the energy-concentrating disk 2 into the cavity shell 3. The annular portion 32 bends downward from the outer edge of the disk portion 31 to form an annular heat dissipation channel. The annular gap between its bottom edge and the air-filling ring 1 constitutes a narrow slit-shaped heat dissipation port h, which is conducive to the heat exchange between the air and the hot air in the heat storage cavity c.

[0026] In this embodiment, the energy-concentrating disk 2 has a middle diameter ring 2a concentric with its outer and inner edges. The outer edge of the energy-concentrating disk 2 is at its highest position, the middle diameter ring 2a is at its lowest position, and the height of the inner edge is between the outer edge and the middle diameter ring 2a. The height of the energy-concentrating disk 2 varies radially, gradually decreasing radially inward from the outer edge at its highest position to the middle diameter ring 2a at its lowest position, and then gradually increasing radially inward from the middle diameter ring 2a. This results in a recessed area surrounding the burner 4 at the middle diameter ring 2a. When the high-temperature heat flow of the flame from the burner 4 diffuses outward, the flue gas accumulated in the recessed area forms a high-temperature air cushion layer, reducing radial heat escape. The recessed area can form an expanded space for thermal energy, achieving a better combustion and heat-gathering effect, thereby further improving the functional role of the energy-concentrating disk 2.

[0027] In this embodiment, the middle diameter ring 2a of the energy-concentrating disk 2 is connected to the top edge of the air-replenishing ring 1, which enables the heat storage cavity c to maximize heat absorption and storage, thereby further improving the heating effect of the heat storage cavity c on the air.

[0028] In this embodiment, the energy-concentrating plate 2 includes an arc-shaped portion 21 extending from its outer edge to the middle diameter ring 2a with an arc transition, an inclined portion 22 gradually rising inward from the middle diameter ring 2a with an incline transition, and a horizontal portion 23 transitioning horizontally from the inner edge of the inclined portion 22 to the inner edge of the energy-concentrating plate 2. The arc-shaped portion 21 smoothly transitions from its outer edge to the middle diameter ring 2a to form a bowl-shaped depression, and its curved surface can efficiently capture the heat radiation scattered by the flame. The accumulated high-temperature flue gas forms a thermal barrier to inhibit heat diffusion. The inclined portion 22 extends from the middle diameter ring 2a to form a heat-reflecting ramp, which directionally conducts the captured heat energy to the middle section of the bottom of the plate. The horizontal portion 23 can form an airflow rectification platform, guiding the inner air to smoothly turn and form a stratified airflow injected into the combustion zone, thereby improving the energy-concentrating effect and the quality of flame combustion.

[0029] The pot rack in this embodiment also includes multiple supports 51, which are spaced circumferentially and arranged on the energy-concentrating plate 2 to support the pot.

[0030] In this embodiment, the energy-concentrating plate 2 has a slot m that allows a portion of the support 51 to pass through. The portion of the support 51 located below the energy-concentrating plate 2 forms a foot 52 that provides support for the pot rack. The shape of the portion of the support 51 that contacts the surface of the energy-concentrating plate 2 matches it, so that the support 51 fits snugly against the energy-concentrating plate 2, and the contact portion is fixedly connected to the energy-concentrating plate 2, which can be done by welding. The fitting arrangement of the support 51 passing through the slot m of the energy-concentrating plate 2 maintains the rigidity of the pot support while the foot 52 formed at its lower part provides support for the pot rack, improving the functional integration while simplifying the structure and reducing the number of parts.

[0031] In this embodiment, the support leg 52 has a slot j that is embedded in the air supply ring 1, so that part of the support leg 52 is located in the inner space r of the air supply ring 1 and the other part is located in the outer space of the air supply ring 1, which increases the support range of the support leg 52. Furthermore, since only a part of the inner space r is maintained, the space occupied by the support leg 52 in the inner space r is reduced, thereby reducing interference with the flow of the supplied air.

[0032] In this implementation case, the air replenishment ring 1 and the energy-concentrating disk 2 are connected as a whole, or fixedly connected, or detachably connected.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pot rack, characterized in that, The device includes an air supply ring (1) surrounding the burner (4), an energy-concentrating disk (2) connected to the top edge of the air supply ring (1), and a cavity shell (3) surrounding the periphery of the energy-concentrating disk (2). The air supply ring (1) has multiple circumferentially arranged air supply holes (a) that allow outside air to enter the inner space (r) of the air supply ring (1). There is a ventilation gap (d) between the inner edge of the energy-concentrating disk (2) and the outer periphery of the burner (4), allowing a portion of the air in the inner space (r) to flow towards the bottom of the burner (4). The ejector tube (41) provides a supply, and another portion of the air is supplied to the combustion area of ​​the burner top cap (42) through the ventilation gap (d); the internal space defined by the cavity shell (3) and the energy-concentrating disk (2) forms a heat storage cavity (c) surrounding the air supply ring (1) and absorbing the heat of the energy-concentrating disk (2), and the bottom of the cavity shell (3) has a heat exhaust port (h) that connects the heat storage cavity (c) and the outer space of the air supply ring (1) for heating the air that is about to enter the inner space (r).

2. The pot rack according to claim 1, characterized in that, The cavity shell (3) surrounds the energy-concentrating disk (2) and part of the air supply ring (1), such that the upper part of the air supply hole (a) is located inside the heat storage cavity (c).

3. The pot rack according to claim 2, characterized in that, The cavity shell (3) includes a disk portion (31) integrally connected to the outer edge of the energy-concentrating disk (2) and extending outward, and an annular portion (32) bent downward and extending from the outer edge of the disk portion (31). The bottom edge of the annular portion (32) and the gas-replenishing ring (1) have a gap and form the heat exhaust port (h).

4. The pot rack according to claim 1, characterized in that, The energy-concentrating disk (2) gradually decreases radially inward from the outer edge at the highest position to the middle diameter ring (2a) at the lowest position, and then gradually increases radially inward from the middle diameter ring (2a), so that the energy-concentrating disk (2) forms a recessed area surrounding the burner (4) at the middle diameter ring (2a).

5. The pot rack according to claim 4, characterized in that, The middle diameter ring (2a) of the energy-concentrating disk (2) is connected to the top edge of the air-replenishing ring (1).

6. The pot rack according to claim 4, characterized in that, The energy-concentrating disk (2) includes an arc-shaped portion (21) extending from its outer edge to the middle diameter ring (2a) and transitioning in an arc shape, an inclined portion (22) gradually rising inward from the middle diameter ring (2a) and transitioning in an incline, and a horizontal portion (23) transitioning from the inner edge of the inclined portion (22) to the inner edge of the energy-concentrating disk (2).

7. The pot rack according to any one of claims 1-6, characterized in that, It also includes a plurality of brackets (51) spaced circumferentially and disposed on the energy-concentrating plate (2), the brackets (51) being used to support the cookware.

8. The pot rack according to claim 7, characterized in that, The energy-concentrating plate (2) has a slot (m) that allows the bracket (51) to pass through, and the portion of the bracket (51) located below the energy-concentrating plate (2) forms a support leg (52) that provides support for the pot rack.

9. The pot rack according to claim 8, characterized in that, The support leg (52) has a slot (j) that is fitted into the air replenishing ring (1), such that a part of the support leg (52) is located in the inner space (r) of the air replenishing ring (1), and the other part is located in the outer space of the air replenishing ring (1).

10. The pot rack according to any one of claims 1-6, characterized in that, The air replenishment ring (1) and the energy-concentrating disk (2) are integrally connected, or fixedly connected, or detachably connected.

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