Cooking utensils

Abstract

This utility model discloses a cooking utensil, which includes a pot body and a pot lid. The top of the pot body has a groove surrounding the pot body. The edge of the pot lid extends into the groove, and the pot lid and the pot body are sealed by liquid in the groove. The liquid in the groove can be water condensed from steam on the lid, and the inner wall of the pot lid guides the condensate to the groove. Alternatively, a certain amount of liquid can be added to the groove to form a "water seal" between the pot lid and the pot body to prevent steam leakage. The pot lid is equipped with a pressure relief device to maintain the internal pressure of the pot body at a preset pressure threshold higher than the standard atmospheric pressure, so as to realize the decoction of medicinal materials / foods under micro-pressure conditions, improve the extraction of effective components of medicinal materials / foods, and shorten the cooking time of medicinal materials / foods.

Description

Technical Field

[0001] This utility model relates to the field of cooking utensils technology, and in particular to a cooking utensil. Background Technology

[0002] Traditional cooking utensils used for decocting medicinal herbs are primarily designed to extract the active ingredients from herbs through a water extraction process. A typical structure includes a heating base, a pot body, and a lid with vents. During operation, the herbs are boiled at atmospheric pressure to extract their components. However, ordinary cooking utensils operate at atmospheric pressure, resulting in a low boiling point for the decoction, insufficient heat penetration, and an inability to effectively break down the cell walls of the herbs, leading to a low extraction rate of the active ingredients. Utility Model Content

[0003] The main purpose of this invention is to provide a cooking appliance that enables the decoction of medicinal herbs / foods under micro-pressure conditions, thereby improving the extraction of effective components from the herbs / foods and shortening the cooking time.

[0004] To achieve the above objectives, this utility model proposes a cooking utensil, comprising:

[0005] The pot body, wherein the pot body is provided with a groove surrounding the pot body; and

[0006] The lid has its edge extending into the groove, and the lid and the pot body are sealed by the liquid in the groove; the lid is also equipped with a pressure relief device, which is used to maintain the internal pressure of the pot body at a preset pressure threshold higher than the standard atmospheric pressure.

[0007] In one embodiment, the pot body includes a pot body sidewall, and the outer side of the pot body sidewall is provided with a lip, the lip and the pot body sidewall cooperate to form the groove.

[0008] In one embodiment, the groove is located adjacent to the spout of the pot.

[0009] In one embodiment, the height of the inner groove side is H1, the height of the outer groove side is H2, and H1≥H2 is satisfied.

[0010] In one embodiment, 0.5mm ≤ H2 ≤ 10mm.

[0011] In one embodiment, the groove width is W, which satisfies 4mm≤W≤8mm.

[0012] In one embodiment, a first gap exists between the inner wall of the lid and the inner edge of the groove, through which condensate formed on the inner wall of the lid flows into the groove; a second gap exists between the outer wall of the lid and the outer edge of the groove.

[0013] In one embodiment, the bottom of the lid abuts against the bottom of the groove.

[0014] In one embodiment, the lid has a guide portion for directing condensate into the groove.

[0015] In one embodiment, the flow guide is provided continuously or intermittently on the lid.

[0016] In one embodiment, the periphery of the lid has a folded edge for extending into the groove, and the slope of the inner wall of the flow guide extending from the top toward the folded edge is α, satisfying 1°≤α≤60°.

[0017] In one embodiment, the cooking utensil is configured as a decoction pot for decocting medicinal herbs.

[0018] This utility model also proposes a cooking utensil, comprising:

[0019] The pot body has a groove surrounding the mouth of the pot;

[0020] A kettle lid, the lid having a flow guide portion and a folded edge portion extending into a groove on its periphery, the flow guide portion guiding condensate into the groove, thereby sealing the folded edge portion and the kettle body through the condensate in the groove; and

[0021] The gravity pressure relief valve includes a counterweight and a pressure relief channel located on the lid and connecting the inside and outside of the kettle. The lid has a pressure relief hole that connects to the pressure relief channel, and the counterweight blocks the pressure relief hole by gravity.

[0022] In one embodiment, a first gap exists between the folded edge and the inner edge of the groove, and condensate formed on the inner wall of the lid flows into the groove through the guide portion from the first gap; a second gap exists between the folded edge and the outer edge of the groove.

[0023] In one embodiment, the height of the inner groove side is H1, the height of the outer groove side is H2, and H1≥H2 is satisfied.

[0024] In one embodiment, the groove width is W, which satisfies 4mm≤W≤8mm.

[0025] In one embodiment, 0.5mm ≤ H2 ≤ 10mm.

[0026] In one embodiment, the slope of the inner wall of the guide portion extending from the top to the folded edge is α, satisfying 1°≤α≤45°.

[0027] In one embodiment, the inner diameter φ of the pressure relief channel satisfies φ≥3mm.

[0028] In one embodiment, the weight of the counterweight is 5g-20g.

[0029] The technical solution of this utility model involves extending the edge of the lid into a groove containing liquid. This liquid can be water condensed from steam on the lid, with the inner wall of the lid guiding the condensate into the groove. Alternatively, a certain amount of liquid can be added to the groove to form a "water seal" between the lid and the pot body, preventing steam leakage and thus increasing the internal pressure of the pot body. A pressure relief device is used to control the pressure, preventing excessive pressure inside the pot and creating a slightly higher pressure environment than the external air pressure. This creates a micro-pressure environment, which can be used when decocting medicinal herbs to solve problems such as long decoction times preventing the extraction of medicinal efficacy or excessive pressure damaging the medicinal properties. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 A schematic diagram of the structure of an embodiment of the cooking utensil provided by this utility model;

[0032] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0033] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0034] Figure 4 for Figure 1 A cross-sectional structural diagram from another perspective;

[0035] Figure 5 for Figure 4 A magnified view of a section at point B.

[0036] Explanation of icon numbers:

[0037] 10. Kettle body; 11. Kettle spout; 12. Groove; 12a. Inner groove edge; 12b. Outer groove edge; 13. Kettle body side wall; 14. Lip edge; 20. Kettle lid; 20a. Spout guide; 20b. Folded edge section; 21. Kettle lid inner wall; 22. Kettle lid outer wall; 23a. First gap; 23b. Second gap; 24. Handle; 30. Pressure relief device; 31. Counterweight; 32. Pressure relief channel; 32a. Lower pressure relief hole; 32b. Upper pressure relief hole; 40. Base.

[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0040] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] Traditional cooking utensils are mainly used to extract the active ingredients of medicinal herbs through water extraction. A typical structure includes a heating base, a pot body, and a lid with a vent. During operation, the extractive ingredients of the medicinal herbs are achieved by boiling at normal pressure. However, ordinary cooking utensils operate at normal pressure, resulting in a low boiling point of the liquid and insufficient heat penetration, which fails to effectively break down the cell walls of the medicinal herbs, leading to a low extraction rate of active ingredients.

[0043] Although some cooking appliances have incorporated the concept of pressure cookers, the high-pressure environment can easily damage the active ingredients of medicinal herbs, and improper pressure release can lead to the splashing of medicinal liquid, making it impossible to accurately control the micro-pressure environment. Commercial cooking appliances struggle to balance sealing and safety, i.e., how to maintain the pressure threshold of cooking appliances to solve the problems of "time-consuming decoction" and "loss of medicinal efficacy".

[0044] Therefore, this utility model proposes a cooking appliance to enable the decoction of medicinal herbs / foods under micro-pressure conditions, thereby improving the extraction of effective components from medicinal herbs / foods and shortening the cooking time of medicinal herbs / foods.

[0045] Cooking utensils are suitable for scenarios that require micro-pressure cooking of food, such as decocting Chinese medicine, making health-preserving soups, stewing tonics, cooking porridge, and making soy milk. They can shorten the cooking time of medicinal materials / ingredients and improve the extraction of effective components from medicinal materials / ingredients.

[0046] Please see Figures 1 to 5 In one embodiment of the present invention, the cooking utensil includes a pot body 10 and a pot lid 20. The top of the pot body 10 is provided with a groove 12 surrounding the pot body 10. The groove 12 is located near the pot mouth 11, that is, the groove 12 surrounds the pot mouth 11. Alternatively, the groove 12 is located at a certain distance from the pot mouth 11, such as being located on the side wall 13 of the pot body and at a certain distance from the pot mouth 11.

[0047] The edge of the lid 20 extends into the groove 12, and the lid 20 and the pot body 10 are sealed by the liquid in the groove 12; and the lid 20 is provided with a pressure relief device 30, which is used to maintain the internal pressure of the pot body 10 at a preset pressure threshold higher than the standard atmospheric pressure.

[0048] The technical solution of this utility model involves the edge of the lid 20 extending into the groove 12, which contains liquid. The liquid in the groove 12 can be water condensed from steam on the lid. The inner wall 21 of the lid guides the condensed water to the groove 12. Alternatively, a certain amount of liquid can be added to the groove 12 to form a "water seal" between the lid 20 and the pot body 10, preventing steam leakage and thus increasing the internal pressure of the pot body 10. The pressure is controlled by the pressure relief device 30 to prevent the internal pressure of the pot body 10 from becoming too high. The pressure environment inside the pot body 10 is controlled to be slightly higher than the external air pressure, forming a micro-pressure environment. When applied to decocting medicinal materials, this can solve the problems of long decoction time, failure of medicinal efficacy to be extracted, or excessive pressure damaging the medicinal properties.

[0049] Specifically, the pressure relief device 30 is a gravity pressure relief valve or a spring-loaded pressure relief valve to maintain the pressure inside the kettle body 10 greater than the standard atmospheric pressure; or, a gravity pressure relief valve or a spring-loaded pressure relief valve is also installed on the kettle lid 20.

[0050] Furthermore, the pressure relief device 30 can also integrate a temperature control component, which automatically triggers pressure relief when a preset temperature is detected. The structure of the temperature control component can be referred to in existing related pressure relief devices, and will not be described in detail here.

[0051] Reference Figures 2 to 4The kettle body 10 and the kettle lid 20 achieve a sealing effect through the liquid in the groove 12. The edge of the kettle lid 20 fits into the groove 12, which has a certain groove width. In one embodiment, there is a first gap 23a between the inner wall 21 of the kettle lid and the inner groove edge 12a of the groove 12 for condensate to flow into the groove 12. The outer edge of the kettle lid 20 abuts against the outer groove wall of the groove 12, and the inner edge of the kettle lid 20 has a gap with the inner groove wall of the groove 12. By heating, the liquid in the kettle vaporizes, and the water vapor expands to generate pressure. When the water vapor comes into contact with the kettle lid 20, it forms condensate, which is guided through the inner wall 21 of the kettle lid to the groove 12, further improving the sealing effect. In one embodiment, the inner edge of the kettle lid 20 abuts against the inner groove wall of the groove 12. When water vapor comes into contact with the kettle lid 20, it forms condensate. The condensate accumulates in the groove 12 and gradually permeates to the outer side of the kettle lid 20. When the water volume in the groove 12 is higher than the gap between the bottom of the kettle lid 20 and the bottom wall of the groove 12, the kettle lid 20 forms a liquid seal, further improving the sealing effect. In one embodiment, there is a second gap 23b between the outer wall 22 of the lid and the outer groove edge 12b of the groove 12, that is, the edge of the lid 20 is located in the groove 12, and there is a gap between the inner and outer groove walls of the lid 20 and the groove 12. When water vapor comes into contact with the lid 20 to form condensate, the condensate on the inner wall 21 and the outer wall of the lid flows into the groove 12, forming a liquid seal inside and outside.

[0052] Understandably, the seal formed between the lid 20 and the body 10 by the liquid in the groove 12 can be achieved by condensation from water vapor inside the body 10, which then flows into the groove 12 to gradually form a liquid seal. This process takes time, so the sealing process can be accelerated by actively pouring liquid into the groove 12. For example, adding water to the groove 12 to form a water seal can be done before or during heating the body 10.

[0053] When the pressure generated by the expansion of water vapor exceeds the preset pressure threshold, the pressure relief device 30 releases the gas to maintain a micro-pressure environment inside the pot 10 that is higher than the external pressure environment. For example, the opening pressure threshold P1 of the pressure relief device 30 satisfies P1 > P0, where P0 is the standard atmospheric pressure. It can be understood that the standard atmospheric pressure varies in different regions and at different altitudes. High pressure environments can easily damage the active ingredients of medicinal materials. Under normal circumstances, medicinal materials may become ineffective at 2P0. Therefore, the pressure inside the pot 10 is usually less than 2P0. The pressure difference between the inside of the pot 10 and the outside can be between 0.1P0 and 2P0. However, it can be understood that depending on the application purpose, such as the need to cook specific medicinal materials or ingredients, the pressure can be adjusted to be greater than 2P0 (but less than the pressure range of pressure cookers on the market).

[0054] When the pressure inside the pot 10 is greater than the external air pressure, the boiling point of the heated liquid water inside the pot 10 increases, which can shorten the cooking time of medicinal herbs / foods and also improve the extraction of effective components from medicinal herbs / foods.

[0055] The work process is as follows:

[0056] The kettle body 10 is heated to generate steam, which increases the pressure inside the kettle. The steam comes into contact with the kettle lid 20 to form condensate. The kettle lid 20 guides the condensate to form a liquid seal in the groove 12. As steam continues to be generated, the pressure inside the kettle body 10 increases. The pressure relief device 30 opens and closes periodically to maintain the pressure in the kettle body 10 in a micro-pressure environment, such as 105-130 kPa. The micro-pressure environment enhances the permeability of the cell walls of medicinal materials / foods, which can accelerate the dissolution of active ingredients. It also increases the boiling point, which can shorten the cooking time of medicinal materials / foods.

[0057] Reference Figure 1 , Figure 3 and Figure 4 The kettle body 10 can be made of metal or ceramic, and the heating method can be electric or fire-heated, such as a gas stove. To facilitate heating of the kettle body 10, the cooking appliance also includes a base 40 for heating the kettle body 10. The base 40 typically includes a base, heating element, heat transfer plate, temperature sensor, and control module. The heat transfer plate is usually in contact with the bottom of the kettle body 10 to ensure effective heat transfer. When the user turns on the switch, current passes through the heating element (such as an electric heating tube, ceramic heating element, etc.), converting electrical energy into heat energy. The heating element is usually located below or built into the heat transfer plate. The heat generated by the heating element is transferred to the heat transfer plate through thermal conduction. The heat transfer plate is usually made of a material with high thermal conductivity, such as copper, aluminum, or steel sheet coated with a thermally conductive coating, to ensure rapid and even heat transfer. The heat transfer plate is in close contact with the bottom of the kettle body 10, and heat is transferred to the bottom and side walls of the kettle body 10 through the heat transfer plate. The material of the kettle body 10 (such as stainless steel, alumina, or ceramic) typically has good thermal conductivity to ensure that heat can be quickly transferred to the internal liquid. The heating principle is that heat is transferred through direct contact between the solids (heat transfer fins and kettle body 10). Close contact between the heat transfer fins and the bottom of the kettle body 10 is key to ensuring efficient heat transfer. However, in some high-end designs, heat may be transferred from the heat transfer fins to the kettle body 10 via thermal radiation, or through convection heat transfer. That is, the liquid inside the kettle body 10 undergoes convection due to heating, and the heat is carried to other parts of the kettle body 10, thereby accelerating the heating process.

[0058] The heating scheme using a base 40 to heat the kettle body 10 includes a safety protection mechanism. The base 40 typically incorporates a built-in temperature sensor and control module to monitor the temperature of the kettle body 10. When the temperature reaches the set value, the control module automatically adjusts the power of the heating element or shuts off heating to prevent overheating or splashing when the liquid boils. To prevent safety hazards caused by short circuits and ensure timely power cut-off in abnormal situations, short-circuit protection and dry-burn protection are also included. When there is insufficient liquid inside the kettle body 10, the base 40 detects an abnormal temperature rise and promptly shuts off heating to prevent damage to the kettle body 10 or the heating element due to dry burning.

[0059] Reference Figure 3 Specifically, the outer side of the side wall 13 of the pot body is provided with a lip 14, which cooperates with the side wall 13 to form a groove 12. The shape of the pot body 10 is not limited, and the shape of the spout 11 can be determined according to the design. For example, the pot body 10 is elliptical, and the spout 11 is circular, elliptical, teardrop-shaped, etc. In this embodiment, the spout 11 is circular, and the side wall 13 of the pot body is provided with a lip 14 surrounding the spout 11. The lip 14 is partially bent and cooperates with the side wall 13 to form a groove 12. The lip 14 can be set on the outer side wall of the pot body 10 or on the inner side wall of the pot body 10. In other solutions, the groove 12 can also be formed by the pot body 10 itself. For example, in the cross-sectional view, the edge of the side wall 13 of the pot body forks to form a Y-shaped shape, thereby forming the spout 11 and the groove 12.

[0060] The groove 12 has an inner groove edge 12a and an outer groove edge 12b. When the condensate formed by water vapor gathers in the groove 12 to form a water seal, the amount of water formed is usually limited. Even if the height of the inner groove edge 12a (near the spout 11) is less than that of the outer groove edge 12b, as long as the depth of the groove 12 is sufficient, there will be no backflow into the kettle body 10 through the spout 11.

[0061] Reference Figure 3 To prevent liquid from sticking to the walls when poured out, the height of the inner groove edge 12a of the groove 12 is H1, and the height of the outer groove edge 12b of the groove 12 is H2, satisfying H1≥H2. That is, the spout 11 is higher than the groove 12, avoiding the problem of excessive water filling, and also solving the problem of liquid possibly flowing into the pot body 10 and sticking to the walls when pouring, thus preventing liquid residue.

[0062] To further address the issue of liquid sticking to the walls when pouring out the internal tank, the top edges of the inner tank edge 12a and / or the outer tank edge 12b are provided with anti-sticking chamfers. These chamfers make it easier to pour liquid from the groove 12 and reduce liquid residue.

[0063] Reference Figure 3Furthermore, the height of the outer groove edge 12b is 0.5mm≤H2≤10mm, that is, the height of the short side of the groove 12 determines the depth of the groove 12. The outer groove edge 12b is the vertical distance from the bottom of the groove 12 to the edge of the outer groove edge 12b. The initial point is to take a point at the bottom of the groove 12 and extend a horizontal line along the top edge of the outer groove edge 12b. The vertical distance from the bottom of the groove 12 to the extension line is the height of the outer groove edge 12b. Several positions can be taken along the circumference of the groove 12 to obtain the average value.

[0064] Reference Figure 3 Specifically, if the height of the outer groove edge 12b is too low (H2 < 0.5mm), it will affect the water sealing effect. If the height of the outer groove edge 12b is too high (H2 > 10mm), it will affect the aesthetics and increase the manufacturing difficulty.

[0065] Reference Figure 3 Furthermore, the groove width of the groove 12 is W, which satisfies 4mm≤W≤8mm. The thickness of the edge of the lid 20 is less than the groove width of the groove 12. The lid 20 abuts against the bottom of the groove 12. This ensures the initial sealing and allows the lid 20 to form a first gap 23a and a second gap 23b after being embedded in the groove 12. The groove width of 4mm-8mm ensures that the liquid in the groove 12 forms a continuous liquid film seal, and also facilitates the drainage of condensate into the groove 12 by the inner wall 21 of the lid and the addition of liquid from the outside.

[0066] like Figure 3 As shown, the inner groove edge 12a and the outer groove edge 12b of the groove 12 are connected to the bottom of the groove with a rounded transition, and the inner groove edge 12a and the outer groove edge 12b have a tendency to gradually narrow away from the bottom of the groove. The groove width of the groove 12 can be taken as the distance between the middle of the inner groove edge 12a and the outer groove edge 12b. For example, at the height distance obtained by H2 / 2, the distance between the inner groove edge 12a and the outer groove edge 12b at that point is the groove width W.

[0067] The depth and width of groove 12 affect the volume of the liquid seal. The liquid seal volume V = πDWH2, where D is the circumference of groove 12. For example, when W = 6 mm and H2 = 3 mm, the liquid seal volume V = πDWH2 ≈ 56 ml (D = 150 mm). Similarly, the steam condensation rate Q also affects the time required for the liquid seal to form.

[0068] Furthermore, the lid 20 is curved to facilitate the flow of condensed water into the groove 12.

[0069] Specifically, the lid 20 is provided with a flow guide 20a. In one embodiment, the flow guide 20a is arc-shaped or a flow guide slope. In another embodiment, the flow guide 20a is at least one groove or flow guide rib provided on the inner wall (21) of the lid.

[0070] In the case where the guide section 20a is arc-shaped, the guide section 20a is continuously arranged inside the lid 20, that is, the guide section 20a is the main body of the lid 20; it can also be intermittently arranged inside the lid 20.

[0071] Specifically, the guide section 20a is a guide slope and is located at the spout.

[0072] Specifically, the periphery of the lid 20 has a folded edge section 20b extending into the groove 12. The folded edge section 20b is a vertical segment that forms a ring around the edge of the main body of the lid 20. The guide section 20a and the folded edge section 20b form a flow path (i.e., condensed water flows from the guide section 20a through the folded edge section 20b into the groove 12). To facilitate better flow guidance, the guide folded edge section 20b and the guide section 20a form an angle greater than 90°. The folded edge section 20b is embedded in the groove 12, and its height is greater than the inner edge 12a of the groove 12 to avoid interference. Simultaneously, to allow condensed water to better pass through the first gap 23a into the groove 12, the edge of the guide section 20a is located above the groove 12. For even better flow guidance, the connection between the guide section 20a and the folded edge section 20b is an arc-shaped transition.

[0073] Reference Figure 3 Specifically, the slope of the inner wall of the guide section 20a extending from the top to the folded edge section 20b is α, satisfying 1°≤α≤60°. For better flow guidance, the slope α is 15°, 20°, 25°, 30°, or 45°.

[0074] Understandably, different curvatures have different guiding effects, and similarly, different groove depths and widths combined with different curvatures will have different effects on condensate collection.

[0075] The slope angle α is the angle between the extension line of the inner wall of the guide section 20a near the groove 12 and the horizontal line of the spout 11. When measuring, a horizontal line can be drawn at the connection between the guide section 20a and the folded edge section 20b, and the angle formed by the arc surface of the guide section 20a near the connection is the slope angle.

[0076] When the kettle body 10 is heated, water vapor forms inside the kettle body 10. The rising water vapor comes into contact with the kettle lid 20 and gradually forms condensation droplets. The condensation droplets hanging on the inner wall 21 of the kettle lid are moved towards the edge along the inclined surface of the inner wall 21 of the kettle lid by gravity and the action of the continuously rising water vapor. They enter the groove 12 through the first gap 23a between the kettle lid 20 and the inner groove edge 12a of the groove 12. As water gradually accumulates in the groove 12, it will seep through the tiny gap between the kettle lid 20 and the bottom of the groove 12. As the water volume gradually increases, the water level seals the gap between the kettle lid 20 and the groove 12, preventing steam leakage and thus increasing the internal pressure of the kettle body 10.

[0077] Reference Figure 5Specifically, the pressure relief device 30 includes a counterweight 31 and a pressure relief channel 32 that connects the inside and outside of the kettle body 10. The counterweight 31 is movably disposed within the pressure relief channel 32.

[0078] In one embodiment, the lid 20 is provided with a mounting hole, and a guide sleeve is sealed and fitted into the mounting hole. A pressure relief channel 32 is formed inside the guide sleeve, connecting the inside and outside of the kettle body 10. The counterweight 31 is slidably disposed in the pressure relief channel 32. In its natural state, the counterweight 31 will block the bottom of the pressure relief channel 32 (connecting to the lower pressure relief hole 32a inside the kettle body 10). When the pressure inside the kettle body 10 is greater than the weight of the counterweight 31, the counterweight 31 is "lifted" by the steam. The steam enters the pressure relief channel 32 from the lower pressure relief hole 32a and is discharged to the outside from the upper pressure relief hole 32b.

[0079] In one embodiment, the lid 20 itself forms a guide sleeve, that is, the lid 20 itself forms a pressure relief channel 32.

[0080] Reference Figure 5 To facilitate the installation of the counterweight 31 and control the venting effect, the diameter of the upper venting hole 32b of the pressure relief channel 32 is larger than that of the lower venting hole 32a. The counterweight 31 is a sphere with a diameter larger than that of the lower venting hole 32a, and can be fitted with the outline of the lower venting hole 32a to achieve a seal. Furthermore, the diameter of the counterweight 31 is smaller than the inner diameter of the pressure relief channel 32, with a clearance fit between them. This allows the counterweight 31 to move up and down within the pressure relief channel 32 to open or seal the lower venting hole 32a. Figure 5 As shown, Figure 5 The image shows that the counterweight 31 moves within the pressure relief channel 32 under the action of water vapor, thereby connecting the lower pressure relief hole 32a and the upper pressure relief hole 32b to the pressure relief channel 32, thus connecting the kettle body 10 with the external environment.

[0081] Specifically, the orifice diameter φ of the pressure relief channel 32 satisfies φ≥3mm, and the weight of the counterweight 31 is 5g-20g; φ=3mm can achieve common pressure thresholds within the 5-20g counterweight range, avoiding excessive counterweight or bulky structure; in addition, φ≥3mm can avoid blockage due to scale or impurities, and the 3mm orifice diameter is compatible with conventional cleaning tools (such as cotton swabs), resulting in low maintenance costs.

[0082] Reference Figure 1 Specifically, the lid 20 is also provided with a handle 24 for taking the lid 20. The handle 24 has various shapes and can be assembled on the lid 20. In this embodiment, in order to ensure sealing and overall texture, the handle 24 and the lid 20 are integrally formed. The handle 24 is a ring with holes for at least two needles to pass through. The handle 24 is located in the middle of the lid 20, that is, at the top of the curved lid 20. The pressure relief device 30 is located next to the handle 24, with a certain distance between them to prevent the water vapor discharged from the pressure relief device 30 from heating the handle 24.

[0083] Reference Figure 1 Specifically, the spout 11 of the pot body 10 is teardrop-shaped to facilitate pouring out the liquid after cooking medicinal herbs or food, and also to facilitate pouring out the liquid in the groove 12. Understandably, during the pouring process, the liquid in the groove 12 will separate from the groove 12 before the liquid in the pot body 10, and the spout 11 of the pot body 10 is higher than the groove 12, so that the liquid in the pot body 10 will not mix with the liquid in the groove 12.

[0084] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cooking appliance characterized by, include: The pot body (10) is provided with a groove (12) surrounding the pot body (10); as well as The lid (20) extends into the groove (12) and the body (10) are sealed by the liquid in the groove (12); and the lid (20) is provided with a pressure relief device (30) to maintain the internal pressure of the body (10) at a preset pressure threshold higher than the standard atmospheric pressure.

2. The cooking utensil as described in claim 1, characterized in that, The pot body (10) includes a pot body side wall (13), and the outer side of the pot body side wall (13) is provided with a lip (14), and the lip (14) cooperates with the pot body side wall (13) to form the groove (12).

3. The cooking utensil as described in claim 1, characterized in that, The groove (12) is located adjacent to the spout (11).

4. The cooking utensil as described in claim 1, characterized in that, The height of the inner groove edge (12a) of the groove (12) is H1, and the height of the outer groove edge (12b) of the groove (12) is H2, and H1≥H2 is satisfied.

5. The cooking utensil as described in claim 4, characterized in that, 0.5mm≤H2≤10mm.

6. The cooking utensil as described in claim 4, characterized in that, The groove width of the groove (12) is W, which satisfies 4mm≤W≤8mm.

7. The cooking utensil as described in claim 1, characterized in that, There is a first gap (23a) between the inner wall (21) of the lid and the inner groove edge (12a) of the groove (12), and the condensate formed on the inner wall (21) of the lid flows into the groove (12) through the first gap (23a); there is a second gap (23b) between the outer wall (22) of the lid and the outer groove edge (12b) of the groove (12).

8. The cooking utensil as described in claim 7, characterized in that, The bottom of the lid (20) abuts against the bottom of the groove (12).

9. The cooking utensil as described in claim 1, characterized in that, The lid (20) has a guide portion (20a) for guiding condensate to the groove (12).

10. The cooking utensil as described in claim 9, characterized in that, The flow guide (20a) is continuously or intermittently disposed on the lid (20).

11. The cooking utensil as described in claim 9, characterized in that, The periphery of the lid (20) has a folded edge (20b) for extending into the groove (12), and the slope of the inner wall of the guide portion (20a) extending from the top to the folded edge (20b) is α, satisfying 1°≤α≤60°.

12. The cooking utensil as described in claim 1, characterized in that, The cooking utensil is configured as a decoction pot for decocting medicinal herbs.

13. A cooking utensil, characterized in that, include: The pot body (10) is provided with a groove (12) surrounding the pot mouth (11); A lid (20) having a flow guide (20a) and a folded edge (20b) extending into the groove (12) at its periphery. The flow guide (20a) can guide condensate formed thereon into the groove (12). The lid (20) and the pot body (10) are sealed by the liquid in the groove (12). The pressure relief device (30) includes a counterweight (31) and a pressure relief channel (32) located on the lid (20) and communicating with the inside and outside of the kettle body (10). The lid (20) is provided with a pressure relief lower hole (32a) communicating with the pressure relief channel (32). The counterweight (31) blocks the pressure relief lower hole (32a) by gravity.

14. The cooking utensil as described in claim 13, characterized in that, There is a first gap (23a) between the folded edge section (20b) and the inner groove edge (12a) of the groove (12), and the condensate formed on the inner wall (21) of the lid flows into the groove (12) through the guide part (20a) from the first gap (23a); there is a second gap (23b) between the folded edge section (20b) and the outer groove edge (12b) of the groove (12).

15. The cooking utensil as described in claim 14, characterized in that, The height of the inner groove edge (12a) is H1, and the height of the outer groove edge (12b) is H2, and H1≥H2 is satisfied.

16. The cooking utensil as described in claim 15, characterized in that, The groove width of the groove (12) is W, which satisfies 4mm≤W≤8mm; and / or 0.5mm≤H2≤10mm.

17. The cooking utensil as described in claim 15, characterized in that, The slope of the inner wall of the guide section (20a) extending from the top to the folded edge section (20b) is α, which satisfies 1°≤α≤45°.

18. The cooking utensil as described in claim 15, characterized in that, The inner diameter φ of the pressure relief channel (32) satisfies φ≥3mm; and / or, The weight of the counterweight (31) is 5g-20g.

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