A gas stove pot rack and a gas stove

Abstract

The application discloses a gas stove pot rack and a gas stove and belongs to the technical field of kitchen appliances. The gas stove pot rack comprises a pot rack body, the pot rack body comprises an upper layer disc and a lower layer disc, the upper layer disc and the lower layer disc enclose a closed cavity, the bottom surface of the lower layer disc is downwardly provided with a hollow heat exchange ring, the inner cavity of the heat exchange ring is communicated with the closed cavity, the volume of the closed cavity is increased, the heat insulation effect of the pot rack is enhanced, at least two heat exchange rings are arranged along the radial direction of the lower layer disc, and a secondary air backflow area is formed between the two adjacent heat exchange rings. When the secondary air passes through the secondary air backflow area, the secondary air forms a backflow, the flow speed of the secondary air is delayed, the flow path of the secondary air is prolonged, and the residence time of the secondary air is increased, so that the secondary air can be fully preheated to participate in combustion, and the temperature of the flame is improved, thereby the temperature of the combustion cavity is improved, and the thermal efficiency is improved. The gas stove comprises the above-mentioned gas stove pot rack. The gas stove has high thermal efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, in particular to a gas stove pot rack and a gas stove. BACKGROUND

[0002] The gas stove is an indispensable appliance for kitchen cooking. With the expansion of the stove market and the continuous development of the stove industry year by year, the thermal efficiency is always the goal of continuous pursuit. Under the premise that the current combustion technology cannot make a breakthrough, the industry generally adopts auxiliary means to improve the thermal efficiency. As we all know, preheating secondary air can increase the temperature of the combustion chamber, thereby improving the thermal efficiency.

[0003] The existing pot rack on the market cannot preheat the secondary air flowing into the burner quickly due to the flat bottom surface of the pot rack, so the thermal efficiency of the gas stove cannot be further improved.

[0004] Therefore, it is urgent to propose a gas stove pot rack and a gas stove to solve the above technical problems. SUMMARY

[0005] The first object of the present application is to provide a gas stove pot rack which can preheat secondary air and improve the thermal efficiency of the gas stove.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] A gas stove pot rack, comprising a pot rack body, the pot rack body comprising an upper layer disc and a lower layer disc, the upper layer disc and the lower layer disc enclosing a closed cavity, the bottom surface of the lower layer disc being downwardly provided with a hollow heat exchange ring, the inner cavity of the heat exchange ring being in communication with the closed cavity; at least two heat exchange rings are provided along the radial direction of the lower layer disc, and a secondary air backflow area is formed between adjacent two heat exchange rings.

[0008] As a preferred technical solution of the above-mentioned gas stove pot rack, the cross-sectional shape of the heat exchange ring comprises a circle and a rectangle.

[0009] As a preferred technical solution of the above-mentioned gas stove pot rack, the edge of the upper layer disc has a ring-shaped flange, the edge of the lower layer disc has a ring-shaped flange, and the flange is fixedly attached to the flange.

[0010] As a preferred technical solution of the above-mentioned gas stove pot rack, the upper layer disc is a ring-shaped disc, and the upper surface of the upper layer disc is a concave arc surface with an inner low and outer high shape.

[0011] A pot rack upper tab is arranged on the concave arc surface.

[0012] As a preferred technical solution of the above-mentioned gas stove pot rack, the lower layer disc is an inner concave ring-shaped disc with a ring-shaped lower concave cavity.

[0013] The bottom end of the lower disc is provided with a pot rack lower foot.

[0014] As the preferred technical scheme of the gas stove pot rack, the pot rack body further comprises:

[0015] An outer disc is sleeved outside the lower disc, a secondary air preheating channel is formed between the outer disc and the lower disc, a high-temperature flue gas area is formed between the outer disc and the upper disc and the lower disc, and the preheated secondary air can flow to the high-temperature flue gas area through the secondary air preheating channel.

[0016] As the preferred technical scheme of the gas stove pot rack, the top edge of the outer disc is provided with a baffle ring upward, and the diameter of the pot rack baffle ring is greater than the diameters of the upper disc and the lower disc.

[0017] As the preferred technical scheme of the gas stove pot rack, a slot corresponding to the pot rack lower foot is formed on the outer disc, and the pot rack lower foot is inserted and fixed in the slot.

[0018] As the preferred technical scheme of the gas stove pot rack, the pot rack lower foot is in interference fit with the slot.

[0019] The pot rack lower foot is welded to the slot.

[0020] The second object of the present application is to provide a gas stove with high thermal efficiency.

[0021] To achieve the above object, the present application adopts the following technical scheme:

[0022] A gas stove comprises the gas stove pot rack according to any one of the above technical schemes.

[0023] The gas stove pot rack provided by the present application comprises an upper disc and a lower disc, which enclose a closed cavity, the bottom surface of the lower disc is provided with a hollow heat exchange ring downward, the inner cavity of the heat exchange ring is connected with the closed cavity, the volume of the closed cavity is increased, the heat insulation effect of the pot rack is enhanced, at least two heat exchange rings are arranged along the radial direction of the lower disc, and a secondary air backflow area is formed between adjacent two heat exchange rings. When the secondary air passes through the secondary air backflow area, the secondary air forms backflow, the flow rate of the secondary air is slowed down, the flow path of the secondary air is prolonged, and the residence time of the secondary air is increased, so that the secondary air can be fully preheated to participate in combustion, which is beneficial to increase the temperature of the flame and thus increase the temperature of the combustion chamber and improve the thermal efficiency.

[0024] The gas stove provided by the present application comprises the above-mentioned gas stove pot rack. The technical advantages and effects that can be achieved by the gas stove are the same as those that can be achieved by the above-mentioned gas stove pot rack, and will not be repeated here.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the gas stove pot rack provided in Embodiment 1 of the present invention;

[0027] Figure 2 This is a partial cross-sectional view of the gas stove pot rack provided in Embodiment 1 of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the gas stove pot rack provided in Embodiment 2 of the present invention;

[0029] Figure 4 This is a partial cross-sectional view of the gas stove pot rack provided in Embodiment 2 of the present invention.

[0030] In the picture:

[0031] 1-Upper plate; 2-Lower plate; 21-Heat exchange ring; 3-Upper foot plate of pot frame; 4-Lower foot plate of pot frame; 5-Outer plate; 51-Baffle ring; 52-Slot;

[0032] 10-Pot frame body; 20-Burner;

[0033] 100 - Sealed cavity; 200 - Secondary air supply channel; 300 - Secondary air preheating channel; 400 - High-temperature flue gas zone. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and are not used to denote or imply relative importance or a number of indicated technical characteristics. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0037] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0039] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0040] Embodiment one

[0041] The present embodiment provides a gas stove rack, such as Figure 1 and Figure 2As shown, the gas stove pot rack comprises a pot rack body 10, the pot rack body 10 comprises an upper layer disc 1 and a lower layer disc 2, the upper layer disc 1 and the lower layer disc 2 enclose a closed cavity 100, the bottom surface of the lower layer disc 2 is downwardly convexly provided with a hollow heat exchange ring 21, the inner cavity of the heat exchange ring 21 is in communication with the closed cavity 100; at least two heat exchange rings 21 are arranged along the radial direction of the lower layer disc 2, and a secondary air backflow area is formed between the two adjacent heat exchange rings 21.

[0042] The closed cavity 100 is filled with air or vacuum, and the heat conduction performance of air and vacuum is far lower than that of metal. Therefore, the closed cavity 100 can play a good heat insulation and heat preservation effect. The inner cavity of the heat exchange ring 21 is in communication with the closed cavity 100, thereby increasing the volume of the closed cavity 100 and enhancing the heat insulation and heat preservation effect of the pot rack. The space between the pot rack body 10 and the burner 20 is a secondary air supply channel 200. When the burner 20 starts to work, the gas combustion makes the secondary air flow automatically along the lower layer disc 2 to the secondary air supply channel 200. Since the secondary air backflow area exists between the two adjacent heat exchange rings 21, the secondary air forms a backflow when passing through the secondary air backflow area, and the flow is as shown by the arrows in the figure, thereby slowing down the flow rate of the secondary air, prolonging the flow path of the secondary air, and increasing the residence time of the secondary air. Therefore, the secondary air can be fully preheated and enter the secondary air supply channel 200 to participate in combustion, which is beneficial to improve the temperature of the flame, thereby improving the temperature of the combustion chamber and improving the thermal efficiency. Figure 2 Since the upper layer disc 1 and the lower layer disc 2 are in contact and conduct heat, the temperature of the lower layer disc 2 is still 100-200℃, and the lower layer disc 2 can be used to preheat the secondary air, thereby realizing heat recovery and reuse and improving energy utilization.

[0043] Continuing to refer to Figure 1 The upper layer disc 1 is an annular disc, and the upper surface of the upper layer disc 1 is a concave arc surface with a low inner hole and a high outer edge, that is, the annular inner hole is along a concave arc surface with a low inner hole and a high outer edge; the concave arc surface is provided with pot rack upper foot pieces 3 for supporting a pot.

[0044] The pot rack upper foot pieces 3 are provided in multiple pieces, and the multiple pot rack upper foot pieces 3 are uniformly arranged along the circumferential direction of the upper layer disc 1. In the embodiment, the pot rack upper foot pieces 3 are provided in four pieces, and of course, the pot rack upper foot pieces 3 can also be provided in three or five pieces, etc., which can be designed according to actual needs.

[0045] The lower layer disc 2 is an inner concave annular disc with an annular concave cavity, and the bottom end of the lower layer disc 2 is provided with pot rack lower foot pieces 4 for supporting the pot rack. Specifically, the upper layer disc 1 is arranged above the lower layer disc 2 and covers the annular concave cavity, so as to enclose the above-mentioned closed cavity 100.

[0046] Optionally, as Figure 2As shown, the edge of the upper layer disc 1 has a ring-shaped flange, and the edge of the lower layer disc 2 has a ring-shaped turn-up, the flange and the turn-up are fixedly connected to realize contact heat conduction and facilitate fixed connection.

[0047] The pot rack lower flanges 4 are provided in multiple pieces, and the multiple pot rack lower flanges 4 are uniformly arranged along the circumferential direction of the lower layer disc 2. In the embodiment, the pot rack lower flanges 4 are provided in four pieces, and of course, the pot rack lower flanges 4 can also be provided in three pieces or five pieces, etc., which can be designed according to actual needs.

[0048] Preferably, the number of the pot rack upper flanges 3 and the number of the pot rack lower flanges 4 are the same and one-to-one corresponding, which can improve the support stability.

[0049] In the embodiment, the cross-sectional shape of the heat exchange ring 21 includes a circle, a rectangle, and an irregular shape, as long as it can block the secondary air.

[0050] The embodiment also provides a gas stove including the above-mentioned gas stove pot rack, and since the gas stove pot rack is provided, the thermal efficiency of the gas stove is significantly improved.

[0051] Embodiment two

[0052] The embodiment provides a gas stove pot rack which is basically the same as the gas stove pot rack in the above-mentioned embodiment one, and the difference lies in that the pot rack body 10 further includes an outer layer disc 5.

[0053] Specifically, as shown in Figure 3 and Figure 4 The outer layer disc 5 is sleeved outside the lower layer disc 2, and the outer layer disc 5 and the lower layer disc 2 are similar in structure and are both inner concave annular discs with annular concave cavities; the secondary air preheating channel 300 is formed between the outer layer disc 5 and the lower layer disc 2, the high-temperature flue gas area 400 is formed between the outer layer disc 5, the upper layer disc 1 and the lower layer disc 2, and the secondary air can flow to the high-temperature flue gas area 400 after being preheated in the secondary air preheating channel 300.

[0054] By increasing the outer layer disc 5, the heat transferred by the lower layer disc 2 to the outside can be directly reduced, thereby playing a heat insulation and heat preservation role. The space not in contact between the outer layer disc 5 and the lower layer disc 2 forms the secondary air preheating channel 300, thereby realizing the shunting of the secondary air. The secondary air flows along the lower part of the outer layer disc 5, and part of the secondary air directly enters the secondary air supply channel 200 to participate in combustion, and the other part enters the secondary air preheating channel 300. The heat exchange ring 21 is located in the secondary air preheating channel 300, and since there is a secondary air reflux area between adjacent heat exchange rings 21, the secondary air forms reflux when passing through the secondary air reflux area, and the flow is as shown in Figure 4As indicated by the middle arrow, the flow rate of the secondary air is delayed, the flow path of the secondary air is prolonged, and the residence time of the secondary air is increased, so that the secondary air is fully preheated before flowing to the high-temperature flue gas area 400.

[0055] Because the existing pot rack does not shield the high-temperature flue gas, the high-temperature flue gas directly contacts with the external air, which reduces the heat exchange between the flue gas and the pot wall, and thus the thermal efficiency of the gas stove cannot be further improved.

[0056] To solve the above problems, the top edge of the outer layer disc 5 is provided with a blocking ring 51 upwards, and the diameter of the blocking ring 51 is greater than the diameters of the upper layer disc 1 and the lower layer disc 2, so that the blocking ring 51 can block and guide the high-temperature flue gas, and a high-temperature flue gas area 400 is formed. On the one hand, the high-temperature flue gas area 400 disturbs the flow of the high-temperature flue gas, delays the flow speed of the high-temperature flue gas, and strengthens the heat exchange between the flue gas and the pot wall. On the other hand, the secondary air can react with the high-temperature flue gas. Because the secondary air that reacts with the high-temperature flue gas is preheated through the secondary air preheating channel 300, the reaction between the high-temperature flue gas and the secondary air is more sufficient, the flue gas temperature is increased, the heat exchange between the high-temperature flue gas and the pot wall is strengthened, and the thermal efficiency is further improved.

[0057] Optionally, the outer layer disc 5 is provided with a slot 52 corresponding to the pot rack lower leg 4, and the pot rack lower leg 4 is inserted and fixed with the slot 52 to realize the fixation of the outer layer disc 5. Preferably, the fixation mode of the pot rack lower leg 4 and the slot 52 can be but is not limited to interference fit or welding connection.

[0058] Note that the above is only the preferred embodiment of the present application and the technical principle applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A gas stove pot rack, characterized in that, The apparatus includes a pot frame body (10), which includes an upper plate (1) and a lower plate (2). The upper plate (1) and the lower plate (2) form a closed cavity (100). A hollow heat exchange ring (21) is provided on the bottom surface of the lower plate (2). The inner cavity of the heat exchange ring (21) is connected to the closed cavity (100). At least two heat exchange rings (21) are provided along the radial direction of the lower plate (2), and a secondary air recirculation zone is formed between two adjacent heat exchange rings (21).

2. The gas stove pot rack according to claim 1, characterized in that, The heat exchange ring (21) has a cross-sectional shape that includes circles and rectangles.

3. The gas stove pot rack according to claim 1, characterized in that, The edge of the upper plate (1) has an annular overlap, and the edge of the lower plate (2) has an annular flange. The overlap and the flange are fitted and fixed together.

4. The gas stove pot rack according to any one of claims 1-3, characterized in that, The upper disk (1) is an annular disk, and the upper surface of the upper disk (1) is a concave arc surface with a lower inner surface and a higher outer surface; The concave arc surface is provided with pot rack upper foot piece (3).

5. The gas stove pot rack according to any one of claims 1-3, characterized in that, The lower disk (2) is an inwardly concave annular disk with an annular concave cavity; The bottom of the lower plate (2) is provided with a pot rack foot piece (4).

6. The gas stove pot rack according to claim 5, characterized in that, The pot frame body (10) also includes: The outer disk (5) is sleeved on the outside of the lower disk (2). A secondary air preheating channel (300) is formed between the outer disk (5) and the lower disk (2). A high-temperature flue gas zone (400) is formed between the outer disk (5), the upper disk (1) and the lower disk (2). The secondary air can flow to the high-temperature flue gas zone (400) after being preheated by the secondary air preheating channel (300).

7. The gas stove pot rack according to claim 6, characterized in that, The outer disk (5) has a retaining ring (51) on its top edge, and the diameter of the retaining ring (51) is larger than the diameter of the upper disk (1) and the lower disk (2).

8. The gas stove pot rack according to claim 6, characterized in that, The outer plate (5) has a slot (52) corresponding to the lower foot piece (4) of the pot rack, and the lower foot piece (4) of the pot rack is inserted into and fixed to the slot (52).

9. The gas stove pot rack according to claim 8, characterized in that, The lower foot piece (4) of the pot rack is interference-fitted with the slot (52); or, The lower foot piece (4) of the pot rack is welded to the slot (52).

10. A gas stove, characterized in that, Includes the gas stove pot rack as described in any one of claims 1-9.

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