Pot racks and stoves

Abstract

The present application relates to the technical field of stoves, and discloses a pot rack and a stove. The pot rack is arranged in a ring shape as a whole and encloses a combustion chamber, the combustion chamber is used for the flame of the burner to pass through, the pot rack has a smoke collecting chamber, the smoke collecting chamber has a smoke inlet on the upper side of the pot rack, the pot rack near the inner side of the burner also has an air supply channel isolated from the smoke collecting chamber, the air supply channel has a secondary air inlet located at the bottom side of the pot rack and a secondary air outlet located at the inner side of the pot rack and connected to the combustion chamber, and the cavity wall of the smoke collecting chamber is connected to the lower channel wall of the air supply channel by heat transfer. The present application implements the provision of a smoke collecting chamber and an air supply channel isolated from the smoke collecting chamber, so as to preheat the secondary air in the air supply channel by the smoke in the smoke collecting chamber, thereby significantly improving the thermal efficiency of the stove.

Description

Technical Field

[0001] The present application relates to the technical field of stoves, and in particular to a pot rack and a stove. Background Art

[0002] Cooker is an important equipment used for cooking in the kitchen.

[0003] In the related art, the energy-gathering pan support can improve the combustion efficiency of the stove, but because the high-temperature smoke generated by the stove during operation is not effectively utilized, the energy-gathering pan support has limited effect on improving the combustion efficiency of the stove. Summary of the invention

[0004] The embodiment of the present application provides a pot rack, which is intended to significantly improve the thermal efficiency of the stove.

[0005] The first aspect of the embodiments of the present application provides a pot stand, wherein the pot stand is arranged in a ring shape as a whole and encloses a combustion chamber, wherein the combustion chamber is used for the flame of the burner to pass through, the pot stand has a smoke collection chamber, and the smoke collection chamber has a smoke inlet on the upper side of the pot stand, and the pot stand also has an air supply channel isolated from the smoke collection chamber near the inner side of the burner, the air supply channel has a secondary air inlet located on the bottom side of the pot stand and a secondary air outlet located on the inner side of the pot stand and connected to the combustion chamber, and the cavity wall of the smoke collection chamber is connected to the lower channel wall of the air supply channel by heat transfer, so as to preheat the secondary air in the air supply channel by the smoke in the smoke collection chamber; the pot stand includes a smoke collection chamber The smoke collecting hood comprises an upper hood shell and a lower hood shell, the upper hood shell is the part forming the smoke inlet, and the upper hood shell comprises a hood top shell and an air-supplementing top shell connected to each other, the lower hood shell is at least partially arranged in the mounting groove and is spaced apart from the groove wall of the mounting groove to form the smoke collecting chamber, and the lower hood shell comprises a hood bottom shell and an air-supplementing bottom shell connected to each other; wherein a side of the hood top shell away from the combustion chamber is connected to a side of the hood bottom shell away from the combustion chamber, and the hood bottom shell is the cavity wall of the smoke collecting chamber; the air-supplementing top shell and the air-supplementing bottom shell are spaced apart to form an air outlet section and the secondary air outlet, and the air-supplementing channel comprises the air outlet section and the secondary outlet.

[0006] Furthermore, the pot stand also includes a pot stand body, the pot stand body has the mounting groove on a side facing the combustion chamber, the mounting groove is open toward the upper side and the inner side of the pot stand, the smoke collecting hood is at least partially installed in the mounting groove, and the smoke collecting hood is spaced apart from the groove wall of the mounting groove so that the smoke collecting chamber is formed between the smoke collecting hood and the groove wall of the mounting groove; wherein, the upper side of the pot stand body and the upper side of the smoke collecting hood are spaced apart along the radial direction of the combustion chamber to construct a smoke inlet.

[0007] Furthermore, a groove wall of the mounting groove is connected to the smoke collecting hood near an edge of the combustion chamber, so that the smoke collecting chamber is isolated from the air supply channel.

[0008] Furthermore, the pot rack body includes a main body upper shell, the main body upper shell includes a top shell and a channel lower shell, one end of the channel lower shell is connected to an end of the top shell close to the combustion chamber, the other end of the channel lower shell is connected to the bottom of the smoke collecting hood, the channel lower shell is located below the top shell in the height direction and forms the mounting groove, and the channel lower shell and the smoke collecting hood are spaced apart to form the smoke collecting chamber.

[0009] Furthermore, at the connection between the top shell and the channel lower shell, the main body upper shell is configured with a protrusion protruding toward the smoke collecting hood, and the protrusion and the smoke collecting hood are spaced apart along the radial direction of the combustion chamber to form the smoke inlet.

[0010] Further, the protrusion extends continuously along the circumference of the pot rack body and is arranged in a ring shape; or, a plurality of protrusions are arranged at intervals along the circumference of the pot rack body.

[0011] Furthermore, in the radial direction of the combustion chamber, the width of the protrusion is not less than 2 mm and not more than 7 mm.

[0012] Furthermore, the channel lower shell is an arc-shaped shell which is concavely arranged in a direction away from the smoke collecting hood.

[0013] Furthermore, the pot rack body also includes a main body lower shell, and an insulating cavity is formed between the main body lower shell and the main body upper shell. The main body lower shell includes a bottom shell, an outer shell and an inner shell. The bottom shell is arranged relative to the top shell and the channel lower shell in the height direction. The top end of the outer shell is connected to the outer edge of the top shell away from the combustion chamber, the bottom end of the outer shell is connected to the outer edge of the bottom shell away from the combustion chamber, the top end of the inner shell is connected to the inner edge of the channel lower shell close to the combustion chamber, and the bottom end of the inner shell is connected to the inner edge of the bottom shell close to the combustion chamber.

[0014] Further, the air supplement bottom shell is a lower channel wall of the air supplement channel, wherein the air supplement bottom shell has a first communication port, so that the secondary air flows into the air outlet section from the first communication port.

[0015] Furthermore, the opening of the first communication port extends in a direction away from the air supply top shell to increase a path for the secondary air to flow through.

[0016] Furthermore, in the height direction, the cover top shell is lower than the top shell, and the height difference between the highest point of the cover top shell and the lowest point of the top shell is not less than 5 mm and not more than 10 mm.

[0017] Furthermore, the cover top shell is inclined toward the direction close to the channel lower shell, and the inclination angle between the cover top shell and the horizontal plane is not less than 10 degrees and not more than 60 degrees.

[0018] Furthermore, the rest of the cover top shell is spaced apart from the rest of the cover bottom shell to form a heat exchange chamber, and the lower shell of the channel is the cavity wall of the smoke collection chamber; the cover bottom shell also has a second connecting port connecting the smoke collection chamber, the heat exchange chamber and the air supply channel, wherein the smoke flows through the second connecting port to mix the smoke with the secondary air in the air supply channel to preheat the secondary air.

[0019] Further, the second communication opening includes a plurality of second communication openings spaced apart along the circumference of the smoke collecting hood; or, the second communication opening extends continuously along the circumference of the smoke collecting hood and is arranged in a ring shape.

[0020] Furthermore, the second communication opening includes at least one of a round hole, a slit hole, a square hole and a special-shaped hole.

[0021] Furthermore, the smoke collecting chamber extends continuously along the circumference of the pot support and is arranged in a ring shape, wherein in the radial direction of the combustion chamber, the size of the smoke collecting chamber is not less than 9 mm and not more than 15 mm.

[0022] Furthermore, the smoke collecting chamber includes a plurality of smoke collecting chambers spaced apart along the circumference of the pot support, wherein in the radial direction of the combustion chamber, the size of each smoke collecting chamber is not less than 5 mm and not more than 10 mm.

[0023] A second aspect of an embodiment of the present application provides a stove, comprising the pot rack as described in any one of the above items and a burner, wherein at least a portion of the burner is disposed in the combustion chamber.

[0024] The present application is implemented by providing a smoke collecting chamber and an air supply channel isolated from the smoke collecting chamber, and high-temperature smoke can flow into the smoke collecting chamber from the smoke inlet to heat the chamber wall of the smoke collecting chamber; in addition, the chamber wall of the smoke collecting chamber is heat-conductingly connected to the lower channel wall of the air supply channel to preheat the secondary air flowing through the lower channel wall of the air supply channel, and the preheated secondary air can participate in the combustion reaction with the flame in the combustion area, while reducing the heat loss of the smoke, increasing the combustion temperature and the flame propagation speed, thereby increasing the thermal convection intensity and the thermal radiation intensity, thereby significantly improving the thermal efficiency of the stove. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments or descriptions of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the structure of a stove in one embodiment of the present application;

[0027] Figure 2 This is a schematic diagram of the structure of a pot rack in one embodiment of the present application;

[0028] Figure 3 for Figure 2 Section view along section AA;

[0029] Figure 4 for Figure 3 A local enlarged view at point B;

[0030] Figure 5 This is a schematic diagram of the structure of a smoke hood in an embodiment of the present application;

[0031] Figure 6 This is a schematic structural diagram of a pot rack in one embodiment of the present application from another perspective.

[0032] Explanation of the accompanying drawings: 1000-cooker; 100-pot stand; 101-combustion chamber; 102-smoke collecting chamber; 1021-smoke inlet; 103-air supply channel; 1031-secondary air inlet; 1032-secondary air outlet; 1033-air outlet section; 10-pot stand body; 10a-mounting groove; 10b-insulating chamber; 11-main body upper shell; 111-top shell; 112-channel lower shell; 12-raised portion; 13-main body lower shell; 131-bottom shell; 132-outer shell; 133-inner shell; 20-smoke collecting hood; 21-upper hood shell; 211-hood top shell; 212-air supply top shell; 22-lower hood shell; 221-first connecting port; 222-hood bottom shell; 223-air supply bottom shell; 224-second connecting port; 23-heat exchange chamber; 200-burner. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0034] A stove is a kitchen appliance that uses gas fuel, electricity or other energy sources to heat and cook food. In the related art, the energy-gathering pan stand can improve the thermal efficiency of the stove, but because the high-temperature flue gas generated by the stove during operation is not effectively utilized, the extent to which the energy-gathering pan stand can improve the thermal efficiency of the stove is limited. Therefore, how to effectively recover the flue gas and effectively utilize the flue gas to reduce heat loss is particularly important for improving the thermal efficiency of the stove.

[0035] See also Figure 1 Therefore, in order to solve the above problems, the embodiment of the present application provides a stove 1000. The stove 1000 includes a pot rack 100 and a burner 200.

[0036] Specifically, the pot rack 100 can provide stable support for pots such as iron pots, steamers, and casseroles.

[0037] At least part of the burner 200 is arranged on the inner side of the pot support 100. The burner 200 is a device that sprays gas fuel and air in a certain way for mixed combustion, and can be used to heat the pot. It should be noted that the burner 200 mentioned in the embodiment of the present application is usually a civilian burner, and the burner 200 is mostly made of stainless steel or metal iron, aluminum and other high temperature resistant materials. The gas fuel burned by the burner 200 can be liquefied petroleum gas, artificial gas, natural gas, etc.

[0038] The pot support 100 is described in detail below.

[0039] See also Figure 1-Figure 3 The pot rack 100 is generally arranged in an annular shape and encloses a combustion chamber 101, and the combustion chamber 101 is used for the flame of the burner 200 to pass through. It can be understood that when the user uses the stove 1000, the pot is placed on the pot rack 100, and at least part of the burner 200 is installed in the combustion chamber 101, so that the flame generated by the burner 200 when burning can pass through the combustion chamber 101 and heat the pot placed on the pot rack 100. Among them, the annular structure of the pot rack body 10 can be a circular ring, an elliptical ring, a polygonal ring, such as a quadrilateral ring and other annular structures, which are not specifically limited in the embodiments of the present application.

[0040] Please continue reading Figure 1-Figure 3Furthermore, the pot support 100 has a smoke collecting chamber 102, and the smoke collecting chamber 102 has a smoke inlet 1021 on the upper side of the pot support 100, so that part of the high-temperature smoke generated by the burner 200 when burning can flow into the smoke collecting chamber 102 from the smoke inlet 1021. Furthermore, the pot support 100 also has an air supply channel 103 isolated from the smoke collecting chamber 102 on the inner side near the burner 200, and the air supply channel 103 has a secondary air inlet 1031 located at the bottom side of the pot support 100 and a secondary air outlet 1032 located at the inner side of the pot support 100 and connected to the combustion chamber 101, so that the secondary air outside the stove 1000 can flow into the air supply channel 103 from the secondary air inlet 1031, and the cavity wall of the smoke collecting chamber 102 is connected to the lower channel wall of the air supply channel 103 in heat transfer. It is understandable that, because the smoke generated when the burner 200 burns is high-temperature smoke, when the smoke flows into the smoke collecting chamber 102 from the smoke inlet 1021, the high-temperature smoke can heat the cavity wall of the smoke collecting chamber 102, and the cavity wall of the smoke collecting chamber 102 is connected to the lower channel wall of the air supply channel 103 by heat transfer. At this time, the lower channel wall of the air supply channel 103 also has a temperature, and when the secondary air flows through the lower channel wall of the air supply channel 103, the secondary air is preheated by the lower channel wall of the air supply channel 103. That is, the secondary air in the air supply channel 103 is preheated by the smoke in the smoke collecting chamber 102, and the preheated secondary air can flow out from the secondary air outlet 1032 and burn with the flame in the combustion area of ​​the burner 200 to increase the combustion temperature and the flame propagation speed, thereby increasing the heat convection intensity and the heat radiation intensity, thereby greatly improving the thermal efficiency of the stove 1000.

[0041] Furthermore, since the secondary air outlet 1032 is connected to the combustion chamber 101 and is close to the burner 200, when the preheated secondary air is sucked by the suction force generated by the flame root, the preheated secondary air can quickly participate in the combustion reaction with the flame. At this time, since the flame has sufficient secondary air, the flame does not need to extend to the outside of the burner 200 to suck the secondary air, so that the overall length of the flame is shortened and the flame hardness is increased. At the same time, when the overall length of the flame is shortened, the effective distance from the flame to the bottom of the pot can be effectively reduced, thereby reducing heat loss.

[0042] The present application is implemented by setting up a smoke collecting chamber 102 and an air supply channel 103 isolated from the smoke collecting chamber 102, and high-temperature smoke can flow into the smoke collecting chamber 102 from the smoke inlet 1021 to heat the cavity wall of the smoke collecting chamber 102; in addition, the cavity wall of the smoke collecting chamber 102 is heat-conductingly connected to the lower channel wall of the air supply channel 103 to preheat the secondary air flowing through the lower channel wall of the air supply channel 103, and the preheated secondary air can participate in the combustion reaction with the flame in the combustion area, while reducing the heat loss of the smoke, increasing the combustion temperature and the flame propagation speed, thereby increasing the thermal convection intensity and the thermal radiation intensity, thereby significantly improving the thermal efficiency of the stove 1000.

[0043] It should be noted that the intensity of thermal convection usually refers to the amount of heat transferred by thermal convection per unit time and per unit area. It reflects the efficiency and speed of heat transfer in the fluid. Thermal amplitude intensity is a physical quantity that describes the amount of heat radiated or received by a unit area on the surface of an object per unit time.

[0044] See also Figure 2-Figure 4 In some embodiments, the pot rack 100 includes a pot rack body 10 and a smoke hood 20 .

[0045] Specifically, the pot stand body 10 has a mounting groove 10a on the side facing the combustion chamber 101, and the smoke hood 20 is at least partially installed in the mounting groove 10a, and the mounting groove 10a is open toward the upper side and the inner side of the pot stand 100, so that the smoke hood 20 is at least partially installed in the mounting groove 10a; furthermore, the smoke hood 20 is spaced apart from the groove wall of the mounting groove 10a, so that a smoke collecting chamber 102 is formed between the smoke hood 20 and the groove wall of the mounting groove 10a. It can be understood that, since the groove wall of the mounting groove 10a is spaced apart from the smoke hood 20 and the mounting groove 10a is open toward the upper side of the pot rack 100, the upper side of the pot rack body 10 and the upper side of the smoke hood 20 can be spaced apart along the radial direction of the combustion chamber 101 to construct a smoke inlet 1021; in this way, when the user places the pot on the pot rack 100 and the stove 1000 is working, part of the smoke generated by the burner 200 can flow smoothly from the smoke inlet 1021 into the smoke chamber 102.

[0046] It should be noted that the pot rack body 10 can be a single-layer structure or a double-layer or other multi-layer structure. For the pot rack body 10 with a single-layer structure, it can be formed by a single stamping process. For the pot rack body 10 with a double-layer or other multi-layer structure, it can be formed by bonding, welding, hot melting, etc. The present application embodiment does not specifically limit this.

[0047] Please continue reading Figure 2-Figure 4In some embodiments, the groove wall of the installation groove 10a is connected to the smoke hood 20 near the edge of the combustion chamber 101. It can be understood that the groove wall of the installation groove 10a is connected to the smoke hood 20 at one end away from the smoke inlet 1021, so that the smoke chamber 102 is isolated from the air supply channel 103, so that the smoke is stored in the smoke chamber 102, so as to continuously heat the cavity wall of the smoke chamber 102, and then transfer the heat of the cavity wall of the smoke chamber 102 to the lower channel wall of the air supply channel 103, so as to facilitate the preheating of the secondary air flowing through the lower channel wall of the air supply channel 103.

[0048] See also Figure 3-Figure 4 In some embodiments, the pot support body 10 includes a main body upper shell 11 , and the main body upper shell 11 includes a top shell 111 and a channel lower shell 112 .

[0049] Specifically, one end of the channel lower shell 112 is connected to one end of the top shell 111 close to the combustion chamber 101, and the other end of the channel lower shell 112 is connected to the bottom of the smoke hood 20, and the channel lower shell 112 is located below the top shell 111 in the height direction and forms a mounting groove 10a. It can be understood that in the height direction, the channel lower shell 112 is located below the top shell 111, so that the channel lower shell 112 forms a mounting groove 10a facing the combustion chamber 101. Furthermore, the channel lower shell 112 and the smoke hood 20 are spaced apart to form the smoke chamber 102, so that smoke can flow from the smoke inlet 1021 into the smoke chamber 102.

[0050] See also Figure 4 Further, in some embodiments, at the connection between the top shell 111 and the channel lower shell 112, the main body upper shell 11 is configured with a protrusion 12 protruding toward the smoke hood 20. It can be understood that the protrusion 12 is provided at the connection between the top shell 111 and the channel lower shell 112, the protrusion 12 protrudes toward the smoke hood 20, and the protrusion 12 and the smoke hood 20 are spaced apart along the radial direction of the combustion chamber 101 to form a smoke inlet 1021. In this way, on the one hand, the smoke in the smoke chamber 102 is blocked from flowing outward from the smoke inlet 1021, and on the other hand, the smoke can be effectively ensured to continuously flow from the smoke inlet 1021 into the smoke chamber 102.

[0051] In some embodiments, in the radial direction of the combustion chamber 101, the width of the protrusion 12 is not less than 2 mm and not more than 7 mm; that is, the width of the protrusion 12 protruding toward the smoke hood 20 can be 2 mm, 4 mm, 6 mm, 7 mm, etc., so that, on the one hand, the smoke in the smoke chamber 102 is blocked from flowing outward from the smoke inlet 1021, and on the other hand, the smoke can be effectively ensured to continue to flow into the smoke chamber 102 from the smoke inlet 1021. If the width of the protrusion 12 is less than 2 mm, at this time, since the width of the protrusion 12 protruding toward the smoke hood 20 is small, the protrusion 12 does not achieve the effect of blocking the smoke from flowing outward from the smoke inlet 1021, resulting in insufficient smoke flowing into the smoke chamber 102. If the width of the raised portion 12 is greater than 7 mm, at this time, due to the large width of the raised portion 12, it is easy for the raised portion 12 to block part of the smoke inlet 1021, thereby resulting in insufficient amount of smoke flowing into the smoke collecting chamber 102 from the smoke inlet 1021. When the amount of smoke is insufficient, the smoke heats the cavity wall of the smoke collecting chamber 102 at a slower speed, thereby resulting in a slower heat transfer speed between the cavity wall of the smoke collecting chamber 102 and the lower channel wall of the air supply channel 103, thereby affecting the preheating efficiency of the secondary air.

[0052] It should be noted that the protrusion 12 can form an integral component with the top shell 111 and the channel lower shell 112 to save assembly process. Of course, in another embodiment, the protrusion 12 can also be installed at the connection between the top shell 111 and the channel lower shell 112 by assembly.

[0053] It should be noted that the protrusion 12 can be constructed in a variety of ways, and the embodiments of the present application do not specifically limit this.

[0054] Exemplarily, the raised portion 12 may be continuously extended along the circumference of the pot support body 10 and be arranged in a ring shape. In this case, the raised portion 12 matches the ring-shaped structure of the pot support body 10 to facilitate processing and manufacturing of the raised portion 12 .

[0055] Exemplarily, a plurality of protrusions 12 are arranged at intervals along the circumference of the pot support body 10. For example, the protrusions 12 may be four, five, six, etc., and are evenly or unevenly distributed at the connection between the top shell 111 and the channel lower shell 112 to block the smoke at the smoke inlet 1021 from flowing outward from the smoke inlet 1021.

[0056] See also Figure 3-Figure 4In some embodiments, the channel lower shell 112 is an arc-shaped shell that is recessed in a direction away from the smoke collecting hood 20. That is, the groove wall of the installation groove 10a is recessed in a direction away from the smoke collecting hood 20 to form an arc. Since the smoke collecting cavity 102 is formed between the groove wall of the installation groove 10a and the smoke collecting hood 20, the smoke can flow into the smoke collecting cavity 102 according to the shape of the groove wall of the installation groove 10a, and the groove wall of the installation groove 10a is arranged in an arc shape, so that the speed of the smoke flowing into the smoke collecting cavity 102 can be accelerated.

[0057] Of course, in other embodiments, the lower channel shell 112 is tilted as a whole, that is, the groove wall of the mounting groove 10a is an inclined surface tilted toward the combustion chamber 101 as a whole, so that the speed of the flue gas flowing into the combustion chamber 101 can be accelerated.

[0058] See also Figure 4 In some embodiments, the pot rack body 10 further includes a main body lower shell 13, that is, the pot rack body 10 is a double-layer structure, and a heat insulation cavity 10b is formed between the main body lower shell 13 and the main body upper shell 11. When the cooker 1000 is working, a part of the smoke will also flow from the main body upper shell 11 to the main body lower shell 13 to heat the main body lower shell 13.

[0059] Further, the main body lower shell 13 includes: the main shell lower shell includes a bottom shell 131, an outer shell 132 and an inner shell 133. Specifically, the bottom shell 131 is arranged relative to the top shell 111 and the channel lower shell 112 in the height direction; the top end of the outer shell 132 is connected to the outer edge of the top shell 111 away from the combustion chamber 101, and the bottom end of the outer shell 132 is connected to the outer edge of the bottom shell 131 away from the combustion chamber 101; the top end of the inner shell 133 is connected to the inner edge of the channel lower shell 112 close to the combustion chamber 101, and the bottom end of the inner shell 133 is connected to the inner edge of the bottom shell 131 close to the combustion chamber 101, so that the top shell 111, the channel lower shell 112, the inner shell 133, the bottom shell 131 and the outer shell 132 are connected in sequence to enclose and form the heat insulation chamber 10b.

[0060] See also Figure 3-Figure 4 In some embodiments, the smoke hood 20 includes an upper hood shell 21 and a lower hood shell 22 .

[0061] Specifically, the upper cover shell 21 is spaced apart from the top shell 111 along the radial direction of the combustion chamber 101 to form a smoke inlet 1021, so that part of the smoke can flow into the smoke collecting chamber 102 from the smoke inlet 1021; the lower cover shell 22 is at least partially disposed in the mounting groove 10a, and the lower cover shell 22 is spaced apart from the groove wall of the mounting groove 10a to form the smoke collecting chamber 102, the side of the lower cover shell 22 away from the combustion chamber 101 is connected to the side of the upper cover shell 21 away from the combustion chamber 101, and the side of the lower cover shell 22 close to the combustion chamber 101 is spaced apart from the side of the upper cover shell 21 close to the combustion chamber 101 to form an air supply channel 103. It can be understood that the channel lower shell 112 is connected to the lower cover shell 22 at one end close to the combustion chamber 101, so that the channel lower shell 112 and the smoke hood 20 are spaced apart to form the smoke collection chamber 102, and the smoke continuously flows in from the smoke inlet 1021 to heat the channel lower shell 112 and the lower cover shell 22, and transfer the heat to the side of the lower cover shell 22 close to the combustion chamber 101; furthermore, when the stove 1000 is burning, the upper cover shell 21 can also be heated according to heat radiation. At this time, when the secondary air flows into the air supply channel 103, it contacts the lower cover shell 22 and the upper cover shell 21, so that the secondary air is preheated, and then the preheated secondary air flows out from the secondary air outlet 1032 to participate in the combustion reaction with the flame to increase the combustion temperature. In this way, the thermal efficiency of the stove 1000 is greatly improved.

[0062] Please continue reading Figure 3-Figure 4 Furthermore, in some embodiments, the upper cover shell 21 includes a cover top shell 211 and an air-supplementing top shell 212 connected to each other; the lower cover shell 22 includes a cover bottom shell 222 and an air-supplementing bottom shell 223 connected to each other; wherein, the side of the cover top shell 211 away from the combustion chamber 101 is connected to the side of the cover bottom shell 222 away from the combustion chamber 101, and the remaining part of the cover top shell 211 is spaced from the remaining part of the cover bottom shell 222 to form a heat exchange chamber 23, and the cover bottom shell 222 and the channel lower shell 112 are both cavity walls of the smoke collecting chamber 102; that is, the smoke can heat both the cover bottom shell 222 and the channel lower shell 112, and since the cavity wall of the smoke collecting chamber 102 is heat-transfer connected to the lower channel wall of the air-supplementing channel 103, and the cover bottom shell 222 and the air-supplementing bottom shell 223 are interconnected, the heat of the cover bottom shell 222 and the channel lower shell 112 can be transferred to the air-supplementing bottom shell 223, so as to preheat the secondary air.

[0063] It should be noted that the hood top shell 211 and the air-supplementing top shell 212 can be formed as an integral component, and the hood bottom shell 222 and the air-supplementing bottom shell 223 can also be formed as an integral component, so as to facilitate the assembly of the smoke hood 20. Of course, in other embodiments, the hood top shell 211 and the air-supplementing top shell 212 can be connected by welding, clamping, and bonding, and the hood bottom shell 222 and the air-supplementing bottom shell 223 can also be connected by welding, clamping, and bonding.

[0064] Please continue reading Figure 3-Figure 4 Further, the air supply channel 103 includes an air outlet section 1033 and a secondary air outlet 1032; that is, the air supply top shell 212 and the air supply bottom shell 223 are spaced apart to form the air outlet section 1033 and the secondary air outlet 1032. It can be understood that the secondary air can flow in from the air supply bottom shell 223. At this time, the secondary air flowing through the air supply bottom shell 223 is preheated and then flows into the air outlet section 1033, and then flows out from the secondary air outlet 1032 to participate in the combustion reaction with the flame to increase the combustion temperature, thereby significantly improving the thermal efficiency of the stove 1000.

[0065] In some embodiments, the air supplement bottom shell 223 is the lower channel wall of the air supplement channel 103 , wherein the air supplement bottom shell 223 has a first communication port 221 , so that the secondary air flows from the secondary air inlet 1031 through the first communication port 221 into the air outlet section 1033 .

[0066] See also Figure 5-Figure 6 Furthermore, the opening of the first communication port 221 extends in a direction away from the air supply top shell 212. When the secondary air flows through the first communication port 221, since the opening of the first communication port 221 extends in a direction away from the air supply top shell 212, the path through which the secondary air flows can be increased, thereby increasing the preheating time of the secondary air, thereby increasing the initial enthalpy value of the flame combustion. The initial enthalpy value refers to the temperature value of the secondary air after being preheated.

[0067] In some embodiments, in the height direction, the cover top shell 211 is lower than the top shell 111, and the height difference between the highest point of the cover top shell 211 and the lowest point of the top shell 111 is not less than 5mm and not more than 10mm. It can be understood that the top shell 111 is located above the cover top shell 211 in the height direction, and because the height difference between the highest point of the cover top shell 211 and the lowest point of the top shell 111 is not less than 5mm and not more than 10mm, that is, the height difference between the highest point of the cover top shell 211 and the lowest point of the top shell 111 can be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., so it is convenient for the top shell 111 and the cover top shell 211 to be spaced apart in the radial direction of the combustion chamber 101 to form the smoke inlet 1021. Furthermore, by setting the cover top shell 211 to be located below the top shell 111 in the height direction, it is effectively ensured that the smoke smoothly enters the smoke collection chamber 102 from the smoke inlet 1021. If the cover top shell 211 is arranged above the top shell 111 in the height direction, most of the smoke will flow from the top shell 111 to the main body lower shell 13, resulting in insufficient smoke intake in the smoke collecting chamber 102.

[0068] It should be noted that no matter how many layers the pot support body 10 has, the top shell 211 is always located below the top shell 111 in the height direction, so that smoke can smoothly enter the smoke collecting chamber 102 from the smoke inlet 1021 .

[0069] See also Figure 4 In some embodiments, the top shell 211 is inclined toward the direction close to the lower shell 112 of the channel, and the inclination angle ɑ between the top shell 211 and the horizontal plane is not less than 10 degrees and not more than 60 degrees, that is, the inclination angle ɑ between the top shell 211 and the horizontal plane can be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, etc., so that the smoke can smoothly enter the smoke collecting chamber 102 from the smoke inlet 1021. If the inclination angle ɑ between the top shell 211 and the horizontal plane is less than 10 degrees, at this time, the inclination angle ɑ between the top shell 211 and the horizontal plane is small, which easily causes the smoke to flow from the top shell 111 to the outside of the stove 1000, so as to reduce the smoke content flowing into the smoke collecting chamber 102. If the inclination angle ɑ between the top shell 211 of the cover and the horizontal plane is greater than 60 degrees, at this time, the inclination angle ɑ between the top shell 211 of the cover and the horizontal plane is relatively large, and the top shell 211 of the cover is easy to approach the groove wall of the installation groove 10a, so that the radial size of the smoke collection chamber 102 in the combustion chamber 101 becomes smaller. In this way, even if the top shell 211 of the cover is located below the top shell 111 in the height direction, the smoke flowing in from the smoke inlet 1021 will also be bounced back due to contact with the groove wall of the installation groove 10a, thereby resulting in insufficient smoke content in the smoke collection chamber 102.

[0070] See also Figure 5 In other embodiments, in order to mix the smoke with the secondary air to preheat the secondary air, the cover bottom shell 222 also has a second connecting port 224 connecting the smoke collecting chamber 102, the heat exchange chamber 23 and the air supply channel 103. At this time, the smoke in the smoke collecting chamber 102 can flow into the heat exchange chamber 23 through the second connecting port 224, and the heat exchange chamber 23 is connected to the air supply channel 103. When secondary air flows into the air supply channel 103, the secondary air and the smoke can be mixed in the air supply channel 103, thereby achieving preheating of the secondary air.

[0071] It should be noted that the embodiment of the present application does not specifically limit the shape of the second communication opening 224. The second communication opening 224 includes at least one of a round hole, a slit hole, a square hole, and a special-shaped hole.

[0072] Please continue reading Figure 5In some embodiments, the second communication openings 224 are arranged at intervals along the circumference of the smoke collecting hood 20. That is, a plurality of second communication openings 224 are arranged at intervals along the circumference of the lower housing 22. For example, the second communication openings 224 may be six, eight, ten, etc., and the second communication openings 224 may be evenly or unevenly spaced along the circumference of the smoke collecting hood 20, so that smoke can flow from the smoke collecting chamber 102 to the heat exchange chamber 23.

[0073] In other embodiments, the second connecting port 224 extends continuously along the circumference of the smoke collecting hood 20 and is arranged in a ring shape. In this case, the structure of the second connecting port 224 can match the structure formed by injection molding of the smoke collecting hood 20 to flow the smoke in the smoke collecting chamber 102 into the heat exchange chamber 23 as much as possible. In this way, insufficient smoke content in the heat exchange chamber 23 is avoided, thereby facilitating the mixing of smoke and secondary air.

[0074] In some other embodiments, both the bottom shell 131 and the lower shell 112 of the channel are provided with a secondary air inlet 1031. At this time, the secondary air flows in from the bottom shell 131, flows through the insulation cavity 10b, and then flows into the smoke collecting cavity 102 from the secondary air inlet 1031 of the lower shell 112 of the channel, so that the secondary air and the smoke are mixed in the smoke collecting cavity 102, thereby preheating the secondary air. The preheated secondary air flows into the air supply channel 103 through the second connecting port 224. The preheated secondary air in the air supply channel 103 can be sucked into the combustion reaction by the suction force generated by the root of the flame, thereby increasing the reaction speed of the flame combustion.

[0075] See also Figure 2 In some embodiments, the smoke collecting chamber 102 extends continuously along the circumference of the pot rack 100 and is arranged in an annular shape. It is understandable that, since the pot rack 100 is arranged in an annular shape as a whole, when the smoke collecting chamber 102 extends continuously along the circumference of the pot rack 100 and is arranged in an annular shape, the structure of the smoke collecting chamber 102 matches the structure of the pot rack 100, so that the pot rack body 10 and the smoke collecting cover 20 are arranged at intervals to form the smoke collecting chamber 102.

[0076] Furthermore, in the radial direction of the combustion chamber 101, the size of the smoke collecting chamber 102 is not less than 9 mm and not more than 15 mm, that is, the size of the smoke collecting chamber 102 can be 9 mm, 12 mm, 13 mm, or 15 mm. In this way, the smoke collecting chamber 102 can store enough smoke, thereby facilitating the smoke to heat the cavity wall of the smoke collecting chamber 102.

[0077] If the size of the smoke collecting chamber 102 is less than 9 mm, the size of the smoke collecting chamber 102 is small, which may lead to insufficient smoke storage in the smoke collecting chamber 102. If the size of the smoke collecting chamber 102 is greater than 15 mm, the size of the smoke collecting chamber 102 is large, which may lead to a larger overall structure of the pot rack 100, thereby increasing the occupied area of ​​the stove 1000 in the kitchen. Furthermore, if the size of the smoke collecting chamber 102 is large, so that the smoke storage space of the smoke collecting chamber 102 becomes larger, and the amount of smoke generated by the burner 200 during combustion is limited, the speed at which the smoke heats the cavity wall of the smoke collecting chamber 102 is slow, thus causing the heat transfer speed between the cavity wall of the smoke collecting chamber 102 and the lower channel wall of the air supply channel 103 to be slow, thereby affecting the preheating efficiency of the secondary air.

[0078] In other embodiments, the smoke collecting chamber 102 includes a plurality of smoke collecting chambers 102 arranged at intervals along the circumference of the pot support 100. For example, the number of smoke collecting chambers 102 may be four, six, seven, etc., and the smoke collecting chambers 102 may be evenly or unevenly distributed around the pot support 100. At this time, in the radial direction of the combustion chamber 101, the size of each smoke collecting chamber 102 is not less than 5 mm and not more than 10 mm, so that the smoke collecting chamber 102 can store enough smoke, so that the smoke can heat the cavity wall of the smoke collecting chamber 102. If the size of the smoke collecting chamber 102 is greater than 10 mm, at this time, due to the larger size of the smoke collecting chamber 102, the area of ​​smoke flowing into the smoke collecting chamber 102 per unit area becomes larger, so the speed at which the smoke heats the cavity wall of the smoke collecting chamber 102 is slower, resulting in a slower heat transfer speed between the cavity wall of the smoke collecting chamber 102 and the lower channel wall of the air supply channel 103, thereby affecting the preheating efficiency of the secondary air.

[0079] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0080] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A pot stand, characterized in that: The pot support is arranged in a ring shape as a whole and encloses a combustion chamber, the combustion chamber is used for the flame of the burner to pass through, the pot support has a smoke collection chamber, and the smoke collection chamber has a smoke inlet on the upper side of the pot support; The pot support is also provided with an air supply channel isolated from the smoke collecting chamber on the inner side near the burner, the air supply channel having a secondary air inlet located at the bottom side of the pot support and a secondary air outlet located at the inner side of the pot support and connected with the combustion chamber, and the cavity wall of the smoke collecting chamber is heat-conductingly connected with the lower channel wall of the air supply channel, so that the secondary air in the air supply channel is preheated by the smoke in the smoke collecting chamber; The pot support comprises a smoke collecting hood, and the smoke collecting hood comprises: The upper cover shell is the part forming the smoke inlet, and comprises a cover top shell and an air supply top shell connected to each other; The lower cover shell is at least partially disposed in the mounting groove and spaced apart from the groove wall of the mounting groove to form the smoke collecting chamber, and comprises a cover bottom shell and an air supply bottom shell connected to each other; Among them, the side of the top shell of the cover away from the combustion chamber is connected to the side of the bottom shell of the cover away from the combustion chamber, and the bottom shell of the cover is the cavity wall of the smoke collection cavity; the air-supplementing top shell and the air-supplementing bottom shell are spaced apart to form an air outlet section and the secondary air outlet, and the air-supplementing channel includes the air outlet section and the secondary air outlet.

2. The pot support according to claim 1, characterized in that: The pot support also includes: A pot support body, having the mounting groove on a side facing the combustion chamber, the mounting groove being open toward the upper side and the inner side of the pot support; The smoke collecting hood is at least partially installed in the installation groove and is spaced apart from the groove wall of the installation groove, so that the smoke collecting cavity is formed between the smoke collecting hood and the groove wall of the installation groove; Wherein, the upper side of the pot support body and the upper side of the smoke collecting hood are spaced apart along the radial direction of the combustion chamber to construct the smoke inlet.

3. The pot support according to claim 2, characterized in that: The groove wall of the installation groove is connected to the smoke collecting hood close to the edge of the combustion chamber, so that the smoke collecting chamber is isolated from the air supplement channel.

4. The pot support according to claim 2, characterized in that: The pot rack body comprises a main body upper shell, and the main body upper shell comprises: top case; and, The channel lower shell has one end connected to one end of the top shell close to the combustion chamber, and the other end connected to the bottom of the smoke collecting hood. The channel lower shell is located below the top shell in the height direction and forms the mounting groove, and is spaced apart from the smoke collecting hood to form the smoke collecting chamber.

5. The pot support according to claim 4, characterized in that: At the connection between the top shell and the channel lower shell, the main body upper shell is configured with a protrusion protruding toward the smoke collecting hood, and the protrusion and the smoke collecting hood are spaced apart along the radial direction of the combustion chamber to form the smoke inlet.

6. The pot support according to claim 5, characterized in that: The protrusion extends continuously along the circumference of the pot support body and is arranged in a ring shape; or, A plurality of protrusions are arranged at intervals along the circumference of the pot rack body.

7. The pot support according to claim 5, characterized in that: In the radial direction of the combustion chamber, the width of the protrusion is not less than 2 mm and not more than 7 mm.

8. The pot support according to claim 5, characterized in that: The channel lower shell is an arc-shaped shell which is concavely arranged in a direction away from the smoke collecting hood.

9. The pot support according to claim 4, characterized in that: The pot rack body also includes a main body lower shell, a heat insulation cavity is formed between the main body lower shell and the main body upper shell, and the main body lower shell includes: A bottom shell, arranged opposite to the top shell and the channel lower shell in a height direction; An outer shell, the top end of which is connected to the outer edge of the top shell away from the combustion chamber, and the bottom end of which is connected to the outer edge of the bottom shell away from the combustion chamber; and The inner shell has a top end connected to the inner edge of the channel lower shell close to the combustion chamber, and a bottom end connected to the inner edge of the bottom shell close to the combustion chamber.

10. The pot support according to claim 4, characterized in that: The air supplement bottom shell is the lower channel wall of the air supplement channel; Wherein, the air replenishing bottom shell has a first communicating port, so that the secondary air can flow into the air outlet section from the first communicating port.

11. The pot support according to claim 10, characterized in that: The opening of the first communication port extends in a direction away from the air supply top shell to increase the path through which the secondary air flows.

12. The pot support according to claim 4, characterized in that: In the height direction, the cover top shell is lower than the top shell, and the height difference between the highest point of the cover top shell and the lowest point of the top shell is not less than 5 mm and not more than 10 mm.

13. The pot support according to claim 4, characterized in that: The cover top shell is inclined toward the direction close to the channel lower shell, and the inclination angle between the cover top shell and the horizontal plane is not less than 10 degrees and not more than 60 degrees.

14. The pot support according to claim 4, characterized in that: The rest of the cover top shell is spaced apart from the rest of the cover bottom shell to form a heat exchange cavity, and the channel lower shell is the cavity wall of the smoke collecting cavity; the cover bottom shell also has a second connecting port connecting the smoke collecting cavity, the heat exchange cavity and the air supplement channel; The flue gas flows through the second connecting port so that the flue gas is mixed with the secondary air in the air supply channel to preheat the secondary air.

15. The pot support according to claim 14, characterized in that: The second communication openings include a plurality of second communication openings spaced apart along the circumference of the smoke collecting hood; or, The second communication port extends continuously along the circumference of the smoke collecting hood and is arranged in a ring shape.

16. The pot support according to claim 14, characterized in that: The second communication opening includes at least one of a round hole, a slit hole, a square hole and a special-shaped hole.

17. The pot support according to claim 1, characterized in that: The smoke collecting chamber extends continuously along the circumference of the pot support and is arranged in a ring shape; Wherein, in the radial direction of the combustion chamber, the size of the smoke collection chamber is not less than 9 mm and not more than 15 mm.

18. The pot support according to claim 1, characterized in that: The smoke collecting chamber comprises a plurality of chambers spaced apart along the circumference of the pot support; Wherein, in the radial direction of the combustion chamber, the size of each smoke collection cavity is not less than 5 mm and not more than 10 mm.

19. A cooking appliance, characterized in that: The stove comprises: The pot support according to any one of claims 1 to 18; and A burner, at least a portion of which is disposed in the combustion chamber.

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