Pot rack for stove and gas stove

Abstract

The utility model discloses a pot rack for a stove and the gas stove, and belongs to the technical field of kitchen appliances. The pot rack for the kitchen range comprises an annular surrounding plate and a supporting piece, the annular surrounding plate is arranged on the periphery of a combustor in a sleeving mode, a concave arc face is arranged on the annular surrounding plate, the concave arc face faces the combustor, and the concave arc face extends in the circumferential direction of the annular surrounding plate; the supporting piece is used for supporting cookware and arranged on the annular surrounding plate. High-temperature flue gas generated by combustion collides with the concave cambered surface when flowing to the concave cambered surface to form a rollback vortex, so that the retention of the high-temperature flue gas at the bottom of the pot is facilitated, the heat exchange time of the high-temperature flue gas is prolonged, the heat exchange intensity of the high-temperature flue gas and the bottom of the pot is enhanced, and the heat energy utilization rate is improved, thereby improving the overall combustion heat efficiency; and on the other hand, the flowing direction of the high-temperature flue gas can be changed through the concave cambered surface, recombustion of part of the high-temperature flue gas can be achieved, generation of combustion waste gas such as CO is reduced, secondary air can be preheated through the high-temperature flue gas, and the combustion heat efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a pot rack for a cooking stove and a gas cooking stove. Background Art

[0002] A gas cooking stove is a common kitchen appliance used for cooking in daily family life. With the continuous development of society, high combustion thermal efficiency has become one of the development directions of gas cooking stoves.

[0003] In order to improve the combustion thermal efficiency, some gas cooking stoves in the prior art adopt a fence-shaped pot rack. The fence-shaped pot rack relatively diverts the discharge of combustion flue gas and the entry and supply of secondary air required for combustion. At the same time, the setting of the fence can block the high-temperature flue gas generated by combustion, slow down the flow rate of the high-temperature flue gas to reduce heat energy loss, and enhance the heat exchange intensity between the high-temperature flue gas and the bottom of the pot to a certain extent. However, due to the unreasonable structural design of the fence-shaped pot rack, there are problems such as not much improvement in combustion thermal efficiency and relatively high CO waste gas generated by combustion.

[0004] Therefore, it is urgent to design a pot rack for a cooking stove and a gas cooking stove to solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a pot rack for a cooking stove, which can enhance the heat exchange effect between high-temperature flue gas and the bottom of the pot and improve the combustion thermal efficiency.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] A pot rack for a cooking stove, comprising:

[0008] An annular fence, sleeved on the outer periphery of a burner, wherein a concave arc surface is provided on the annular fence, the concave arc surface faces the burner, and the concave arc surface extends along the circumferential direction of the annular fence; and,

[0009] A support member for supporting a pot, and the support member is arranged on the annular fence.

[0010] As a preferred technical solution of the above pot rack for a cooking stove, the concave arc surface covers the entire inner side surface of the annular fence, so that the longitudinal section of the annular fence is in a bracket shape.

[0011] As a preferred technical solution of the above pot rack for a cooking stove, the upper end surface of the support member is higher than the upper end surface of the annular fence, and the lower end surface of the support member is lower than the lower end surface of the annular fence.

[0012] As a preferred technical solution of the pot rack for the above-mentioned cooker, the support member is L-shaped and includes a horizontal support portion and a vertical connection portion connected at an angle. The vertical connection portion is connected to the outer circumferential surface of the annular enclosing plate, and the horizontal support portion is spaced above the annular enclosing plate.

[0013] As a preferred technical solution of the pot rack for the above-mentioned cooker, the annular enclosing plate and the support member are connected by welding; or,

[0014] The annular enclosing plate and the support member are of an integrally formed structure.

[0015] As a preferred technical solution of the pot rack for the above-mentioned cooker, the height of the annular enclosing plate ranges from 22 mm to 32 mm.

[0016] As a preferred technical solution of the pot rack for the above-mentioned cooker, the depth of the concave arc surface on the annular enclosing plate ranges from 2 mm to 7 mm.

[0017] As a preferred technical solution of the pot rack for the above-mentioned cooker, the distance between the upper end surface of the annular enclosing plate and the upper end surface of the support member ranges from 11 mm to 16 mm.

[0018] As a preferred technical solution of the pot rack for the above-mentioned cooker, the distance between the lower end surface of the annular enclosing plate and the cooker panel ranges from 9 mm to 13 mm.

[0019] Another object of the present invention is to provide a gas cooker with high combustion thermal efficiency.

[0020] To achieve this purpose, the present invention also adopts the following technical solutions:

[0021] A gas cooker includes the above-mentioned pot rack for the cooker.

[0022] The pot rack for the cooker disclosed by the present invention includes an annular enclosing plate and a support member. The annular enclosing plate is sleeved on the outer periphery of the burner. The annular enclosing plate is provided with a concave arc surface facing the burner, and the concave arc surface extends along the circumferential direction of the annular enclosing plate. The support member is used to support the cookware and is arranged on the annular enclosing plate. When the high-temperature flue gas generated by combustion flows through the concave arc surface and collides with it, a re-circulating vortex is formed, which is beneficial to the retention of the high-temperature flue gas at the bottom of the pot, prolongs the residence time of the high-temperature flue gas at the bottom of the pot, that is, increases the heat exchange time of the high-temperature flue gas, enhances the heat exchange intensity between the high-temperature flue gas and the bottom of the pot, improves the thermal energy utilization rate, and thus improves the overall combustion thermal efficiency. On the other hand, the concave arc surface will change the flow direction of the high-temperature flue gas, which can not only realize the re-combustion of part of the high-temperature flue gas, reduce the generation of combustion waste gases such as CO, but also preheat the secondary air by using the high-temperature flue gas, further improving the combustion thermal efficiency.

[0023] The gas stove disclosed by the present utility model includes the above-mentioned pot stand for the stove. The combustion thermal efficiency of this gas stove is high. Brief Description of the Drawings

[0024] Figure 1 FIG. 6 is a schematic structural view of the pot stand for the stove and the burner after assembly provided by the specific embodiment of the present utility model;

[0025] Figure 2 FIG. 10 is a cross-sectional view of the pot stand for the stove and the burner after assembly provided by the specific embodiment of the present utility model.

[0026] In the figures:

[0027] 1, annular enclosing plate; 2, support member; 3, burner. Specific Embodiments

[0028] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be made with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0029] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0031] In the present utility model, unless otherwise clearly defined or limited, terms such as "installation", "connection", "attachment", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0034] This embodiment provides a pot rack for a cooking stove, which can effectively slow down the flow rate of high-temperature flue gas to reduce heat energy loss, enhance the heat transfer intensity between the combustion heat energy and the bottom of the pot, improve the heat energy utilization rate, and thus enhance the overall combustion thermal efficiency.

[0035] As Figure 1 and Figure 2 shown, the pot rack for the cooking stove includes an annular enclosing plate and a support member. Among them, the annular enclosing plate is sleeved on the outer periphery of the burner. The inner side surface of the annular enclosing plate is provided with a concave arc surface, and the concave arc surface faces the center, that is, the concave arc surface faces the burner, and the concave arc surface extends along the circumferential direction of the annular enclosing plate. The support member is disposed on the annular enclosing plate, and the support member is used to support the cookware.

[0036] The concave arc surface of the annular baffle faces the burner. With such a structural arrangement, when the high-temperature flue gas generated by combustion flows through the concave arc surface, it encounters a large resistance, so that the high-temperature flue gas in this part forms a swirling vortex after colliding with the concave arc surface. This can effectively slow down the flow rate of the high-temperature flue gas to reduce heat energy loss, realize the retention of the high-temperature flue gas at the bottom of the pot, extend the residence time of the high-temperature flue gas at the bottom of the pot, that is, increase the heat exchange time between the high-temperature flue gas and the bottom of the pot, enhance the heat exchange intensity between the high-temperature flue gas and the bottom of the pot, improve the heat energy utilization rate, and thus enhance the overall combustion thermal efficiency. At the same time, since the flow direction of the high-temperature flue gas changes when it flows through the concave arc surface of the annular baffle, a part of the high-temperature flue gas will flow upward at the upper end of the annular baffle, that is, flow in the direction of the bottom of the pot, which further enhances the heat exchange intensity between the high-temperature flue gas and the bottom of the pot, effectively improves the heating effect, and thus improves the overall combustion thermal efficiency. This part of the high-temperature flue gas can also participate in combustion again, making the combustion more complete and effectively reducing the generation of combustion waste gases such as CO. In addition, another part of the high-temperature flue gas will flow downward at the bottom end of the annular baffle, that is, flow in the direction of the cooktop. At this time, the secondary air replenished between the bottom end of the annular baffle and the cooktop can entrain this part of the high-temperature flue gas, and the high-temperature flue gas preheats the replenished secondary air, and the heat energy utilization rate is further improved, further enhancing the overall combustion thermal efficiency.

[0037] In this embodiment, the concave arc surface extends along the circumferential direction of the annular baffle to form a whole circle structure, and in the axial direction, the concave arc surface extends up and down to the upper and lower end faces of the annular baffle, so that the concave arc surface covers the entire inner side of the annular baffle, that is, the longitudinal section of the annular baffle is in the shape of parentheses "()" as a whole. This structural arrangement can make the above technical effects more prominent and is conducive to improving the overall combustion thermal efficiency.

[0038] The upper end surface of the support member is higher than the upper end surface of the annular baffle, and the lower end surface of the support member is lower than the lower end surface of the annular baffle. That is, the annular baffle is arranged in the middle part in the height direction of the support member. That is to say, the upper end of the support member is higher than the upper end of the annular baffle, and the upper end of the support member is used to place the cooking pot. In this way, an exhaust port for combustion waste gases such as CO generated by combustion is formed between the upper end of the annular baffle and the bottom of the cooking pot, ensuring the reasonable discharge of combustion flue gas, realizing the balance of the combustion condition, and enhancing the overall combustion effect; the lower end surface of the support member is lower than the lower end surface of the annular baffle, and the bottom end of the support member is placed on the cooktop. In this way, a replenishment channel for the secondary air required for combustion is formed between the lower end surface of the annular baffle and the cooktop, so as to ensure the supply of the secondary air required for combustion to make the combustion more complete.

[0039] In this embodiment, the support member is L-shaped and includes a horizontal support portion and a vertical connection portion connected at an angle. The vertical connection portion is connected to the outer circumferential surface of the annular shroud, and the bottom of the vertical connection portion is supported on the cooktop panel. The horizontal support portion is spaced above the annular shroud, that is, there is a certain distance between the lower surface of the horizontal support portion and the upper end surface of the annular shroud.

[0040] There are at least three support members, and the at least three support members are evenly arranged on the annular shroud at equal intervals in the circumferential direction for supporting cooking utensils. In this embodiment, there are four support members.

[0041] The annular shroud and the support member are connected by welding, that is, they are a welded combined structure. Of course, the annular shroud and the support member can also be an integrally formed structure, such as an integrally cast structure. This embodiment does not make specific restrictions on this and can be selected according to the actual situation.

[0042] In order to effectively slow down the flow rate of the high-temperature flue gas to reduce heat energy loss, enhance the heat exchange intensity between the combustion heat energy and the bottom of the pot, improve the heat energy utilization rate, thereby enhancing the combustion thermal efficiency, and at the same time effectively reduce the generation of combustion exhaust gases such as CO. In this embodiment, the height of the annular shroud ranges from 22 mm to 32 mm. For example, it can be 22 mm, 24 mm, 26 mm, 28 mm, 30 mm or 32 mm, and can be selected according to the actual situation. If the height of the annular shroud is too low, the blockage of the combustion flue gas during the emission process is insufficient, resulting in too fast a flow rate and large heat energy loss; if the height of the annular shroud is too high, it will cause the combustion flue gas to be discharged smoothly, resulting in poor combustion conditions.

[0043] The depth of the concave arc surface on the annular shroud ranges from 2 mm to 7 mm. For example, it can be 2 mm, 3 mm, 4 mm, 5 mm, 6 mm or 7 mm, and can be selected according to the actual situation. If the depth of the concave arc surface is too shallow or too deep, it is not conducive to the combustion flue gas forming a swirling vortex after colliding with the concave arc surface during the emission process, that is, it is not conducive to the retention of the high-temperature flue gas at the bottom of the pot. If the residence time of the high-temperature flue gas at the bottom of the pot is not long, the heat energy loss is large, affecting the heat exchange effect between the high-temperature flue gas and the bottom of the pot, resulting in a low thermal efficiency problem.

[0044] The distance between the upper end surface of the annular shroud and the upper end surface of the support member ranges from 11 mm to 16 mm. For example, it can be 11 mm, 12 mm, 13 mm, 14 mm, 15 mm or 16 mm, and can be selected according to the actual situation. If the distance between the two is too large, the combustion flue gas is discharged too fast, resulting in an increase in heat energy loss; if the distance between the two is too small, it will cause the combustion flue gas to be discharged smoothly, resulting in poor combustion conditions.

[0045] The value range of the distance between the lower end face of the annular baffle and the cooktop panel is 9 mm - 13 mm. For example, it can be 9 mm, 10 mm, 11 mm, 12 mm or 13 mm, and it can be selected according to the actual situation. If the distance between the two is too large, too much secondary air is replenished, which will reduce the temperature field of the heat energy mass at the bottom of the pot; if the distance between the two is too small, too little secondary air is replenished, resulting in incomplete combustion.

[0046] In order to reduce the occurrence of adverse phenomena such as heat loss and abrasion caused by the direct contact between the support member and the cooktop panel or the liquid receiving tray, optionally, a non-metallic pad is provided at the bottom of the support member. The non-metallic pad can be made of temperature-resistant silicone rubber, fluororubber, polytetrafluoroethylene, etc., which can play a role in reducing heat conduction loss and buffering, and at the same time avoid the occurrence of adverse abrasion phenomena.

[0047] The annular baffle of the pot rack for the cooktop in this embodiment is circular, and can also be square, square-round, oval, polygon, etc., and can be specifically set according to the actual situation.

[0048] The pot rack for the cooktop provided in this embodiment can effectively slow down the flow rate of the high-temperature flue gas to reduce heat energy loss, enhance the heat transfer intensity between the combustion heat energy and the bottom of the pot, improve the heat energy utilization rate, and thus improve the combustion thermal efficiency. On the one hand, when the high-temperature flue gas generated by combustion flows through the annular baffle of the concave arc surface and collides with it, a reeling vortex is formed, which is conducive to the retention of the high-temperature flue gas at the bottom of the pot, prolongs the residence time of the high-temperature flue gas at the bottom of the pot, that is, increases the heat exchange time of the high-temperature flue gas, and enhances the heat transfer intensity between the high-temperature flue gas and the bottom of the pot; on the other hand, the annular baffle of the concave arc surface will change the flow direction of the high-temperature flue gas, which can not only realize the re-combustion of part of the high-temperature flue gas, reduce the generation of combustion waste gases such as CO, but also use the high-temperature flue gas to preheat the secondary air, further improving the combustion thermal efficiency.

[0049] This embodiment also provides a gas cooktop, and the gas cooktop includes the aforementioned pot rack for the cooktop. Since the gas cooktop includes the aforementioned pot rack for the cooktop, thus, the technical advantages and effects that the gas cooktop can achieve also include the technical advantages and effects that the pot rack for the cooktop can achieve, which will not be elaborated here.

[0050] Note that the above is only the preferred embodiment of the present invention and the technical principles applied. Those skilled in the art will understand that the present invention is not limited to the specific embodiments here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments only. Without departing from the concept of the present invention, it can also include more other equivalent embodiments, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A pot rack for a stove, characterized in that: include: an annular shroud, sleeved on the outer circumference of the burner, the annular shroud being provided with a concave arc surface, the concave arc surface facing the burner, the concave arc surface extending along the circumferential direction of the annular shroud; and, A support member is used to support the cookware, and the support member is arranged on the annular enclosure plate.

2. The cooker pot rack according to claim 1, characterized in that: The concave arc surface covers the entire inner side surface of the annular enclosure plate, so that the longitudinal section of the annular enclosure plate is bracket-shaped.

3. The cooker pot rack according to claim 1, characterized in that: The upper end surface of the support member is higher than the upper end surface of the annular enclosure plate, and the lower end surface of the support member is lower than the lower end surface of the annular enclosure plate.

4. The cooker pot support according to claim 1, characterized in that: The support member is L-shaped, and includes a horizontal support portion and a vertical connection portion connected at an angle, the vertical connection portion is connected to the outer circumferential surface of the annular enclosure, and the horizontal support portion is spaced above the annular enclosure.

5. The cooker pot support according to claim 1, characterized in that: The annular shroud and the support are connected by welding; or, The annular enclosure plate and the support member are an integrally formed structure.

6. The cooker support according to any one of claims 1 to 5, characterized in that: The height of the annular enclosure plate ranges from 22 mm to 32 mm.

7. The cooker pot support according to any one of claims 1 to 5, characterized in that: The depth of the concave arc surface on the annular enclosure plate ranges from 2 mm to 7 mm.

8. The cooker support according to any one of claims 1 to 5, characterized in that: The distance between the upper end surface of the annular enclosure plate and the upper end surface of the support member ranges from 11 mm to 16 mm.

9. The cooker support according to any one of claims 1 to 5, characterized in that: The distance between the lower end surface of the annular enclosing plate and the cooker panel ranges from 9 mm to 13 mm.

10. A gas cooker, characterized in that: The invention comprises a cooker pot rack as claimed in any one of claims 1 to 9.

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