CN112923410B - Energy-gathering pot rack and gas stove - Google Patents

Abstract

The invention provides an energy-gathering pot rack and a gas stove, and relates to the technical field of kitchen appliances, wherein the energy-gathering pot rack comprises a first layer of discs and a second layer of discs which are arranged at intervals, and an annular cavity surrounding a combustion hole is formed between the first layer of discs and the second layer of discs; at least two check rings surrounding the combustion holes are vertically arranged on the disk surface of the first layer of disk, and the check rings are arranged at intervals to form a flue gas reflux area. The invention relieves the technical problems of high heat exchange loss, low heat exchange efficiency, low energy utilization rate of flue gas and low combustion heat efficiency of the existing gas cooker.

Description

Energy-gathering pot rack and gas stove

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to an energy-gathering pot rack and a gas stove.

Background Art

Gas stoves are essential kitchen appliances for cooking in daily life. Their products are constantly developing, and thermal efficiency is an important performance indicator of gas stoves. In order to pursue higher combustion thermal efficiency, gas stoves with energy-gathering pot racks have emerged. Using energy-gathering pot racks in cooking can gather heat energy and improve combustion thermal efficiency.

Most of the existing energy-gathering pot racks are annular energy-gathering pot racks surrounding the burner head. The smoke is gathered in the energy-gathering pot rack, which enhances the heat exchange between the smoke and the pot bottom. Most of these energy-gathering pot racks are single-layer structures, and the energy-gathering effect is not good. The multi-layer energy-gathering pot rack includes an inner energy-gathering annular plate and an outer energy-gathering annular plate, and a cavity is formed between the two, so that the energy-gathering pot rack has a better energy-gathering effect, thereby improving the heat utilization rate of the burner, but the smoke cannot fully exchange heat, resulting in a low improvement in the thermal efficiency of the gas stove.

Summary of the invention

The object of the present invention is to provide an energy-gathering pot rack and a gas stove to alleviate the technical problems in the prior art of high heat exchange loss, low heat exchange efficiency, low energy utilization rate of flue gas and low combustion thermal efficiency of the gas stove.

The present invention provides an energy-gathering pot stand, comprising an energy-gathering disk body, the energy-gathering disk body being provided with a combustion hole for housing a burner; the energy-gathering disk body comprising a first disk and a second disk arranged at intervals, an annular cavity surrounding the combustion hole being formed between the first disk and the second disk; at least two retaining rings surrounding the combustion hole are vertically arranged on the disk surface of the first disk, the retaining rings being arranged at intervals to form a smoke recirculation zone.

Furthermore, there are multiple retaining rings in annular shape, and the multiple retaining rings are coaxially arranged, and a smoke recirculation zone is formed between every two adjacent retaining rings.

Furthermore, the width of the smoke reflow zone gradually increases from the center of the energy focusing disk body to the edge of the energy focusing disk body.

Furthermore, the heights of the plurality of retaining rings increase continuously from the center of the energy focusing disk body to the edge of the energy focusing disk body.

Furthermore, the extension of the first layer of disks has an outer edge, and the height of the outermost retaining ring among the plurality of retaining rings is lower than the outer edge.

Furthermore, the innermost retaining ring in the retaining ring has an inner ring cavity surrounding the combustion hole, and the inner ring cavity is communicated with the annular cavity.

Furthermore, each retaining ring is integrally formed with the first layer of disks, and the retaining ring is an annular cavity protrusion that protrudes from the disk surface of the first layer of disks toward a direction away from the second layer of disks.

Furthermore, the energy-gathering pot stand also includes a plurality of legs for erecting the pot body, and the legs are arranged on the first layer of the plate.

The present invention also provides a gas stove, comprising a burner and the above-mentioned energy-gathering pot rack, wherein the energy-gathering pot rack is sleeved on the outer side of the burner.

Furthermore, the innermost retaining ring is arranged close to the burner and spaced apart from the wall of the burner to form a secondary air supply channel communicating with the external environment.

Furthermore, in the same direction from the center of the energy focusing disk body to the edge of the energy focusing disk body, the upper edges of each retaining ring are tangent to the same tangent line and the tangent line is parallel to the center line of the fire hole of the burner.

The beneficial effects of the energy-gathering pot rack and the gas stove provided by the present invention are:

The present invention provides an energy-gathering pot stand and a gas stove, wherein the energy-gathering pot stand comprises an energy-gathering plate body, the energy-gathering plate body is provided with a combustion hole for arranging a burner; the energy-gathering plate body comprises a first plate and a second plate which are arranged at intervals, an annular cavity surrounding the combustion hole is formed between the first plate and the second plate; at least two retaining rings surrounding the combustion hole are vertically arranged on the plate surface of the first plate, and the retaining rings are arranged at intervals to form a smoke reflow zone.

Through the present invention, the first layer of disk and the second layer of disk form a double-layer structure, and the annular cavity between the first layer of disk and the second layer of disk is filled with air. Since the thermal conductivity of air is worse than that of metal, the annular cavity can play a better role in heat insulation and heat preservation; after the smoke enters the smoke recirculation zone, it will swirl between the two retaining rings. The existence of the smoke recirculation zone enhances the heat exchange degree of the high-temperature smoke in the recirculation zone and improves the heat exchange efficiency. The embodiment of the present invention alleviates the technical problems of high heat exchange loss, low heat exchange efficiency, low energy utilization rate of smoke, and low combustion thermal efficiency of the existing gas stove.

The present invention also provides a gas stove, which includes all the technical features of the above-mentioned energy-gathering pot rack and thus also has the above-mentioned technical effects.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic structural diagram of an energy-gathering pot stand provided in an embodiment of the present invention;

FIG2 is a cross-sectional view of an energy-gathering pot stand provided by an embodiment of the present invention;

FIG3 is a partial enlarged cross-sectional view of the energy-gathering pot stand provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of a smoke recirculation zone of an energy-gathering cooker rack provided in an embodiment of the present invention.

Icons: 100-energy-gathering disk body; 200-first-layer disk; 300-second-layer disk; 400-retaining ring; 500-annular cavity; 600-tripod; 700-secondary air supply channel; 800-fire hole.

DETAILED DESCRIPTION

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

In the description of the present invention, it should be noted that the terms "upper", "lower", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the inventive product is usually placed when in use, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", "fourth", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

Gas stoves are a necessary kitchen appliance for cooking in daily life and are constantly developing. Thermal efficiency is an important performance indicator of gas stoves. In order to pursue higher combustion thermal efficiency, gas stoves with energy-gathering pot racks have emerged. Using energy-gathering pot racks in cooking can gather heat energy and effectively improve combustion thermal efficiency.

In the existing energy-gathering pot racks, the annular energy-gathering pot racks surrounding the burner are mostly single-layer structures. The smoke of this energy-gathering pot rack is gathered inside the energy-gathering pot rack, which enhances the heat exchange between the smoke and the pot bottom, but the energy-gathering effect is not good; while the multi-layer energy-gathering pot rack includes an inner energy-gathering annular plate and an outer energy-gathering annular plate, and a cavity is formed between the two, so that the energy-gathering effect of the energy-gathering pot rack is better, thereby improving the heat utilization rate of the burner, but the flow speed of the smoke in the energy-gathering pot rack is relatively fast, and sufficient heat exchange cannot be carried out, and the thermal efficiency of the gas stove is not improved much.

Based on this, the present invention proposes an energy-gathering pot rack and a gas stove to alleviate the technical problems of high heat exchange loss, low heat exchange efficiency, low energy utilization rate of flue gas and low combustion thermal efficiency of gas stoves in some technologies.

An embodiment of the present invention provides an energy-gathering pot stand, as shown in FIG1 , comprising an energy-gathering disk body 100, which is provided with a combustion hole for mounting a burner; the energy-gathering disk body 100 comprises a first disk 200 and a second disk 300 which are spaced apart, and an annular cavity 500 surrounding the combustion hole is formed between the first disk 200 and the second disk 300; at least two retaining rings 400 surrounding the combustion hole are vertically arranged on the disk surface of the first disk 200, and the retaining rings 400 are spaced apart to form a smoke recirculation zone.

Through the present invention, as shown in FIG. 2 , the first layer of disk 200 and the second layer of disk 300 on the energy collecting disk body 100 form a double-layer structure, and the annular cavity 500 between the first layer of disk 200 and the second layer of disk 300 is filled with air. Since the thermal conductivity of air is worse than that of metal, the annular cavity 500 enables the energy collecting pot rack to have a better heat insulation effect; the innermost retaining ring 400 can reduce the diffusion of secondary air to the outer side of the energy collecting pot rack, ensure the stability of the temperature field in the central area of the energy collecting disk, and reduce the heat exchange loss; the existence of the flue gas recirculation zone enhances the heat exchange degree of high-temperature flue gas in the flue gas recirculation zone, and improves the heat exchange efficiency. The embodiment of the present invention improves the thermal efficiency of the burner from multiple angles, and alleviates the technical problems of high heat exchange loss, low heat exchange efficiency, low energy utilization rate of flue gas, and low combustion thermal efficiency of gas stoves.

Specifically, the first layer of the disk is an annular, shallow disk with a combustion hole in the middle; the second layer of the disk is also an annular, deep disk with a combustion hole in the middle. The outer edge of the first layer of the disk is connected to the outer edge of the second layer of the disk, and the inner edge of the first layer of the disk is connected to the inner edge of the second layer of the disk. The first layer of the disk 200 and the second layer of the disk 300 can be integrally formed or separately arranged. In the case of a separate arrangement, the first layer of the disk 200 and the second layer of the disk 300 are fixed to each other by means of threaded connection, etc., and the first layer of the disk 200 is arranged above the second layer of the disk 300. It should be noted that, whether integrally formed or separately arranged, the internal space of the first layer of the disk 200 and the second layer of the disk 300 is sealed. In this case, the annular cavity 500 can play a role in heat insulation.

The combustion hole at the center of the energy concentrating disk body 100 is used to place the burner. For example, in this embodiment, the combustion hole is a circular hole. Depending on the shape of the edge of the matching burner, the combustion hole can also be in other shapes.

In this embodiment, the smoke recirculation zone is composed of two adjacent retaining rings 400 and the space between them, and the number of retaining rings 400 is at least two. When the gas stove is in use, the smoke flows from the combustion hole in the center of the energy-gathering pot rack to the outer edge of the energy-gathering pot rack via the upper surface of the first layer of the plate 200. The arrangement of the retaining ring 400 forms a smoke recirculation zone between the two retaining rings. The smoke swirls in the smoke recirculation zone, which can slow down the flow rate of the smoke when the smoke flows through, thereby extending the flow time of the smoke on the energy-gathering plate body 100 and reducing the heat exchange loss.

Furthermore, the smoke recirculation zone can change the flow direction of the smoke. Specifically, a portion of the smoke will be blocked and recirculated by the outer retaining ring 400 when flowing through the smoke recirculation zone, and the recirculated smoke will flow toward the bottom of the pot along the outer side of the inner retaining ring 400 close to the combustion hole, thereby improving the utilization rate of the smoke and the heat exchange efficiency between the smoke and the bottom of the pot, and further improving the thermal efficiency of the gas stove.

In this embodiment, there are multiple retaining rings 400 in annular shape, and the multiple retaining rings 400 are coaxially arranged, and a smoke recirculation zone is formed between every two adjacent retaining rings 400. It should be noted that the retaining rings 400 are annular and coaxially arranged, which means that the cross-sections of each retaining ring 400 are circular rings with the same center. In this case, the same smoke recirculation zone formed by two adjacent retaining rings 400 is evenly arranged in all directions, and the recirculated smoke is roughly the same in all directions of the combustion hole, ensuring the uniformity of heat exchange.

For example, the retaining ring 400 in this embodiment is arranged perpendicular to the lower surface of the second layer disk 300, as shown in Fig. 3, and in the transverse cross-sectional view parallel to the side, the side of the retaining ring 400 is a vertical straight line. It should be noted that the side of the retaining ring 400 can also be an arc or other shape, as long as it can play the role of delaying the flow of smoke and forming a smoke recirculation area.

In this embodiment, the width of the smoke recirculation zone gradually increases from the center of the energy concentrating disk body 100 to the edge of the energy concentrating disk body 100. There are multiple smoke recirculation zones. Compared with a single smoke recirculation zone, the existence of multiple smoke recirculation zones can further enhance the degree of heat exchange of high-temperature smoke in the recirculation zone and improve the heat exchange efficiency. Since the temperature of the area close to the combustion hole on the upper surface of the first layer of the disk 200 is lower, and the temperature of the area away from the combustion hole is higher, the area away from the combustion hole requires a larger recirculation space than the area close to the combustion hole, and the width of the multiple smoke recirculation zones is set to gradually increase from the center to the edge.

Exemplarily, as shown in FIG4, taking three layers of baffles as an example, the innermost baffle and the middle baffle form a first smoke recirculation zone, and the middle baffle and the outermost baffle form a second smoke recirculation zone. When the high-temperature smoke flows through the upper surface of the first disk 200, a part of the high-temperature smoke is blocked by the middle baffle when flowing through the middle baffle and forms a recirculation, while the other part of the high-temperature smoke is blocked by the outermost baffle when flowing through the outermost baffle and forms a recirculation. The width of the first smoke recirculation zone is smaller than the width of the second smoke recirculation zone, and the smoke temperature at the second smoke recirculation zone is higher than the smoke temperature at the first smoke recirculation zone. The smoke recirculation zone with increasing width allows the smoke with higher temperature to respond to the smoke recirculation zone with larger width, thereby improving the energy utilization rate of the smoke.

In this embodiment, the heights of the plurality of retaining rings 400 are continuously increased from the center of the energy concentrating disk body 100 to the edge of the energy concentrating disk body 100. Specifically, in the same direction from the center of the energy concentrating disk body 100 to the edge of the energy concentrating disk body 100, the upper edges of the retaining rings 400 are tangent to the same tangent line. In this case, the flue gas flowing on the upper surface of the first layer of the disk 200 is subjected to a smaller tangential force when flowing through the upper edges of the retaining rings 400, which reduces the resistance, reduces the energy loss caused by the flue gas overcoming the resistance during the flow process, and improves the energy utilization rate of the flue gas.

In this embodiment, the first layer of disk 200 has an outer edge, and the height of the outermost retaining ring 400 among the plurality of retaining rings 400 is lower than the outer edge. Specifically, the outer edge of the first layer of disk 200 refers to the annular edge formed by the highest point of the first layer of disk 200 away from the combustion hole. In this case, the smoke reaching the outer edge can be smoothly discharged from the energy-gathering pot rack without being blocked, ensuring that the gas pressure field above the energy-gathering disk body 100 is evenly distributed, which is conducive to the full return of air and gas, improves the combustion efficiency, and reduces the emission of carbon monoxide.

In this embodiment, the innermost retaining ring 400 of the retaining ring 400 has an inner ring cavity surrounding the combustion hole, and the inner ring cavity is connected to the annular cavity 500. The innermost retaining ring 400 is a hollow annular structure, which can further increase the volume of the annular cavity 500 and improve the heat insulation effect of the energy-gathering pot rack. When the gas stove is used, the heat of the energy-gathering pot rack is mainly concentrated in the first layer of the plate 200, and the larger volume of the annular cavity 500 can reduce the heat conduction loss from the energy-gathering pot rack to the surrounding environment.

Optionally, each retaining ring 400 is integrally formed with the first layer disk 200, and the retaining ring 400 is an annular cavity protrusion that rises from the disk surface of the first layer disk 200 away from the second layer disk 300. Each retaining ring 400 is a hollow annular structure, which can further increase the volume of the annular cavity 500.

In this embodiment, the energy-gathering pot rack also includes a plurality of legs 600 for erecting the pot body, and the legs 600 are arranged on the first layer plate 200. Exemplarily, there are four legs 600, which are arranged at 90° intervals between each other. The four legs 600 are identical, and the upper surfaces of the four legs 600 are on the same plane, and the lower surfaces are on the same plane. During the use of the energy-gathering pot rack, the upper surface of the legs 600 can support the placement of the pot body and provide stable support force; the lower surface can be supported on the panel of the gas stove to assist in the placement of the energy-gathering pot rack. The evenly arranged legs 600 improve the safety and stability of the energy-gathering pot rack.

The embodiment of the present invention further provides a gas stove, comprising a burner and the above-mentioned energy-gathering pot rack, wherein the energy-gathering pot rack is sleeved on the outside of the burner. When the gas stove is used, the pot body is arranged on the foot stand 600 of the energy-gathering pot rack, located above the burner.

In this embodiment, the innermost retaining ring 400 is spaced apart from the burner surface and the burner wall surface to form a secondary air supply channel 700 that communicates with the external environment. When the gas stove is in use, secondary air can enter the combustion hole in the center of the energy-gathering pot rack through the secondary air supply channel 700 to supplement auxiliary combustion. On the other hand, when the lower-temperature secondary air enters the center of the energy-gathering disk, the innermost retaining ring 400 can reduce the diffusion of secondary air to the smoke recirculation area, and the annular cavity 500 formed by the first layer of disk 200 and the second layer of disk 300 has the effect of heat insulation and heat preservation, which can reduce the heat exchange between the cold air and the smoke in the central area, thereby ensuring the stability of the temperature field in the central area of the energy-gathering pot rack and reducing heat exchange losses.

Optionally, as shown in FIG3 , in the same direction from the center of the energy concentrating disk body 100 to the edge of the energy concentrating disk body 100, the upper edges of each retaining ring 400 are tangent to the same tangent line and the tangent line is parallel to the center line of the burner's fire hole 800. Specifically, the tangent line of the upper edge of each retaining ring 400 is parallel to the center line of the fire hole 800, which means that the tangent line is parallel to the center line of the fire hole 800 in a transverse cross-sectional view parallel to the side. Exemplarily, the center line of the fire hole 800 is located above the tangent line of the upper edge of each retaining ring 400.

In this case, the smoke flowing out of the fire hole 800 generally flows along the tangent of the upper edge of each retaining ring 400 toward the outer edge of the energy-gathering disk body 100, and the tangential resistance encountered by the smoke in the flow is uniform, and the energy utilization rate of the smoke is high. If the tangent is not parallel to the center line of the fire hole 800, for example, the angle between the center line of the fire hole 800 and the lower surface of the second layer disk 300 is greater than the angle between the tangent and the lower surface of the second layer disk 300, the smoke flowing out of the fire line may directly overflow outside the energy-gathering pot rack, resulting in energy waste; if the angle between the center line of the fire hole 800 and the lower surface of the second layer disk 300 is less than the angle between the tangent and the lower surface of the second layer disk 300, most of the smoke will be blocked by the retaining ring 400 close to the combustion hole and cannot flow through the retaining ring 400 far away from the combustion hole, reducing the energy utilization rate of the smoke.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An energy-gathering pot stand, characterized in that it comprises: an energy-gathering plate body (100), wherein the energy-gathering plate body (100) is provided with a combustion hole for mounting a burner; The energy concentrating disk body (100) comprises a first disk (200) and a second disk (300) which are spaced apart from each other, and an annular cavity (500) surrounding the combustion hole is formed between the first disk (200) and the second disk (300); At least two retaining rings (400) surrounding the combustion holes are vertically arranged on the disk surface of the first disk (200), and the retaining rings (400) are arranged at intervals to form a smoke recirculation zone; In the same direction from the center of the energy concentrating disk body (100) to the edge of the energy concentrating disk body (100), the upper edges of each retaining ring (400) are tangent to the same tangent line, and the tangent line is parallel to the center line of the fire hole (800) of the burner; The cross-section of each retaining ring (400) is a circular ring with the same center. 2. The energy-gathering cooker stand according to claim 1 is characterized in that the retaining rings (400) are multiple and annular, the multiple retaining rings (400) are coaxially arranged, and the smoke recirculation zone is formed between every two adjacent retaining rings (400). 3. The energy-gathering cooker stand according to claim 2, characterized in that the width of the smoke recirculation zone gradually increases from the center of the energy-gathering disk body (100) to the edge of the energy-gathering disk body (100). 4. The energy-gathering pot stand according to claim 2, characterized in that the plurality of retaining rings (400) are arranged to increase in height from the center of the energy-gathering disk body (100) to the edge of the energy-gathering disk body (100). 5. The energy-gathering pot stand according to claim 4, characterized in that the extension of the first layer of the plate (200) has an outer edge, and the height of the outermost retaining ring (400) among the plurality of retaining rings (400) is lower than the outer edge. 6. The energy-gathering cooker support according to claim 1, characterized in that the innermost retaining ring (400) of the retaining rings (400) has an inner ring cavity surrounding the combustion hole, and the inner ring cavity is connected to the annular cavity (500). 7. The energy-gathering pot stand according to claim 1, characterized in that each of the retaining rings (400) is integrally formed with the first layer of disk (200), and the retaining ring (400) is an annular cavity (500) protruding from the disk surface of the first layer of disk (200) in a direction away from the second layer of disk (300). 8. The energy-gathering pot stand according to claim 1, characterized in that the energy-gathering pot stand further comprises a plurality of legs (600) for erecting the pot body, and the legs (600) are arranged on the first layer plate (200). 9. A gas stove, characterized by comprising a burner and the energy-gathering pot rack according to any one of claims 1 to 8, wherein the energy-gathering pot rack is sleeved on the outside of the burner. 10. The gas stove according to claim 9, characterized in that the innermost retaining ring (400) is arranged at a distance from the wall of the burner and close to the burner to form a secondary air supply channel (700) communicating with the external environment.