A new type of negative pressure health pot

Abstract

This utility model belongs to the technical field of health-preserving kettles and discloses a novel negative pressure health-preserving kettle, including a heating device for heating the liquid inside the kettle, an outer kettle, an inner kettle, and a lid. The outer kettle is located on top of the heating device, and the lid fits onto the inner kettle, with a sealed connection between the outer kettle and the inner kettle. The inner kettle includes a sealing structure comprising an upper sealing part and a lower sealing part, which are connected to the upper sealing part and sealed to the outer kettle. The lower sealing part and the upper sealing part are also sealed to the outer kettle. A notch is provided in the sealing structure, and a through hole is provided in the inner kettle, which communicates with the outer kettle through the through hole. This utility model, through its reasonable pressure-relief sealing structure and circulating through-hole design, achieves active pressure relief and explosion prevention, uniform heat distribution, and full immersion and extraction of substances, improving safety and beverage efficacy, while also facilitating operation and cleaning.

Description

Technical Field

[0001] This utility model belongs to the field of health-preserving kettle technology, and more specifically, it relates to a new type of negative pressure health-preserving kettle. Background Technology

[0002] Health-preserving kettles are commonly used heating appliances in modern homes and restaurants, widely applied in scenarios such as decocting traditional Chinese medicine and extracting tea. However, traditional health-preserving kettles have significant drawbacks during continuous heating:

[0003] 1. Insufficient pressure relief safety: When heating in a closed system, the accumulated internal pressure can easily cause the kettle to crack (especially when cooking substances that expand easily). Existing pressure relief valves have complex structures and slow response times, posing safety hazards.

[0004] 2. Uneven heat distribution: The single-layer pot design concentrates heat at the bottom, making it difficult for medicinal materials or tea leaves to be fully soaked, resulting in low extraction efficiency of active ingredients.

[0005] 3. Poor sealing reliability: Conventional sealing rings are prone to deformation and failure under temperature changes, leading to liquid leakage and heat loss.

[0006] Fourth, poor ease of operation: the lid is easy to fall off when pouring, the handle structure is unstable, and there are still cleaning dead corners that affect hygiene.

[0007] Therefore, this utility model provides a novel negative pressure health pot. Utility Model Content

[0008] In view of the above-mentioned problems of existing technology, the purpose of this utility model is to provide a new type of negative pressure health pot, which achieves active pressure relief and explosion prevention, uniform heat distribution and full immersion and extraction of substances through reasonable pressure relief sealing ring and circulation hole design, thereby improving safety and beverage efficacy, while also being easy to operate and clean.

[0009] The objective of this utility model can be achieved through the following technical solutions:

[0010] A novel negative pressure health-preserving kettle includes a heating device for heating the liquid inside the kettle, an outer pot, an inner pot, and a lid. The outer pot is positioned on top of the heating device. The lid fits snugly with the inner pot, and the outer pot and inner pot are sealed together. The inner pot includes a sealing structure comprising an upper sealing part and a lower sealing part. The lower sealing part is connected to the upper sealing part and is sealed to the outer pot. The upper sealing part is also sealed to the outer pot. The sealing structure has a notch, and the inner pot has a through hole, through which the inner pot communicates with the outer pot.

[0011] As a further preferred technical solution of this utility model, the inner pot includes an inner pot body, and the inner side of the sealing structure is provided with a stepped structure, and the sealing structure is connected to the inner pot body through the stepped structure.

[0012] The sealing structure described herein is elastic.

[0013] As a further preferred technical solution of this utility model, the inner pot body is provided with an annular step, the annular step is provided with a first-level step and a second-level step, the first-level step and the second-level step are connected, and the inner pot is closed with the pot lid through the annular step.

[0014] As a further preferred technical solution of this utility model, the outer vessel is provided with an annular groove, the outer vessel is equipped with a handle through the annular groove, and the outer vessel is connected to a liquid outlet tap.

[0015] As a further preferred technical solution of this utility model, the lower sealing part is sealed to the inner wall of the outer pot, and the upper sealing part is sealed to the upper edge of the outer pot.

[0016] The sealing structure includes a positioning rib, which is disposed between the upper sealing part and the lower sealing part.

[0017] As a further preferred technical solution of this utility model, the sealing structure is a sealing ring, the cross-section of the lower sealing part is V-shaped, the cross-section of the upper sealing part is L-shaped, and the inner pot is provided with a lifting lug.

[0018] As a further preferred technical solution of this utility model, the kettle lid includes a lid sealing element, a lid plate and a kettle handle. The kettle handle is connected to the center of the lid plate. The lid sealing element is disposed on the outer periphery of the lid plate. The kettle lid is placed on the first step of the inner kettle. The lid sealing element is provided with a lid sealing silicone ring. The kettle lid is sealed to the inner kettle body through the lid sealing silicone ring. A vent is provided on the lid plate.

[0019] The cross-section of the lid sealing silicone ring is hook-shaped. The hook of the lid sealing silicone ring is engaged with the secondary step of the inner pot body. The end of the hook of the lid sealing silicone ring forms a line seal with the corner of the primary step and the secondary step.

[0020] As a further preferred technical solution of this utility model, the liquid dispensing faucet includes a knob, a valve core, and a conical valve seat. The end of the valve core is a conical plug. The liquid dispensing faucet achieves a seal by rotating the knob so that the conical plug abuts against the conical valve seat.

[0021] As a further preferred technical solution of this utility model, the handle includes a U-shaped rod and an annular clamp. The handle is sleeved with the annular groove of the outer pot body through the annular clamp, and the two ends of the U-shaped rod are rotatably connected to the annular clamp.

[0022] The U-shaped rod has a pivot at both ends, and the U-shaped rod is connected to the annular clamp through the pivot. A torsion spring is installed inside the pivot, and the handle automatically resets and flips through the torsion spring.

[0023] As a further preferred technical solution of this utility model, the heating device includes a housing, a heating plate for heating the outer pot body, a control circuit board, a temperature sensor, a power interface, and a control component. The housing covers the control circuit board, the temperature sensor, and the control component. The heating plate is located at the bottom upper end of the heating device and is in close contact with the bottom of the outer pot body. The temperature sensor, the control component, and the power interface are electrically connected to the control circuit board.

[0024] The control component is an integrated control panel, which is located on the front of the housing.

[0025] As described above, the novel negative pressure health pot provided by this utility model has the following beneficial effects:

[0026] 1. This utility model utilizes a novel negative pressure health-preserving kettle. Compared with existing technologies, its structure, featuring a lower sealing section, an L-shaped upper sealing section, and a notch design within the inner kettle, ensures a complete seal between the outer and inner kettles under normal operating conditions due to the elasticity of the sealing structure, preventing liquid leakage and heat loss. When the heating device continuously heats the kettle, the pressure inside the outer kettle increases, and the expanding gas forces the liquid from the outer kettle into the inner kettle through the through-hole, creating a liquid level difference. Once the pressure reaches a preset critical point, the gas automatically breaks through the notch, opening the notch and connecting the inner kettle to the external environment, thus releasing pressure. This avoids safety hazards such as kettle rupture and explosion caused by excessive internal pressure, significantly improving product safety, especially suitable for long-term heating scenarios (such as brewing traditional Chinese medicine or tea).

[0027] 2. This utility model utilizes a novel negative pressure health-preserving kettle. Compared with existing technologies, its structure, with a through-hole in the inner pot, allows the liquid in the outer pot to circulate under air pressure. Combined with a liquid level difference design, this promotes uniform heat distribution and thorough immersion of substances (such as medicinal herbs and tea leaves). The heating device (including a heating plate, temperature sensor, and control circuit board) precisely controls the temperature, ensuring efficient and energy-saving heating. Simultaneously, the liquid circulation mechanism driven by air pressure changes accelerates the release and extraction of active ingredients, enhancing the practicality and functionality of the health-preserving kettle (e.g., producing a richer broth or tea), making it suitable for preparing various health-preserving beverages.

[0028] 3. This utility model utilizes a novel negative pressure health pot. Compared with existing technologies, due to its structure, the specific structure of the sealing structure (the lower sealing part is sealed to the inner wall of the outer pot, and the upper sealing part is sealed to the upper edge of the outer pot) provides multiple sealing guarantees, ensuring no leakage during normal use. The vent design of the lid (located on the lid plate) works in conjunction with the notch to achieve dual pressure regulation and prevent accidents. In addition, the design of the handle of the outer pot (connected to the annular groove by a ring clamp, and the U-shaped rod can automatically reset) and the side wall liquid outlet (including a knob, valve core, and conical valve seat) makes the pot easy to lift, pour, and clean, simplifying the user's operation steps and improving the overall user experience.

[0029] 4. This utility model utilizes the aforementioned novel negative pressure health pot. Compared with existing technologies, due to its structure, the overall structure of this application (such as the annular stepped connection between the inner pot and the lid) ensures the stability and durability of the components. The hook-shaped cross-section design of the lid's sealing silicone ring (which snaps into the second-level stepped inner pot and forms a line seal with the corner of the stepped section) further enhances the reliability of the seal. This design simplifies the production process, reduces manufacturing costs, and extends product lifespan, making it suitable for mass production.

[0030] Additional aspects and advantages of this 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

[0031] 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 these drawings without creative effort.

[0032] Figure 1 This is a structural schematic diagram of a novel negative pressure health pot according to this utility model application;

[0033] Figure 2 This is a cross-sectional view of a novel negative pressure health pot according to this utility model application;

[0034] Figure 3 This is a schematic diagram of the outer pot of a novel negative pressure health pot according to this utility model application;

[0035] Figure 4 One of the structural schematic diagrams of the inner pot of a novel negative pressure health pot according to this utility model application;

[0036] Figure 5 The second schematic diagram of the inner pot of a novel negative pressure health pot for this utility model application;

[0037] Figure 6 A cross-sectional view of the inner pot of a novel negative pressure health pot according to this utility model application;

[0038] Figure 7 This is a schematic diagram of the lid of a novel negative pressure health pot, which is the subject of this utility model application.

[0039] Summary of figure labels and their descriptions:

[0040] 100. Heating device; 200. Outer vessel; 210. Dispensing tap; 220. Annular groove; 230. Handle; 300. Inner vessel; 310. Sealing structure; 311. Upper sealing part; 312. Lower sealing part; 313. Notch; 314. Stepped structure; 315. Positioning rib; 320. Through hole; 330. Inner vessel body; 340. Annular step; 341. First-level step; 342. Second-level step; 350. Lifting lug; 400. Lid; 410. Lid sealing element; 411. Lid sealing silicone ring; 420. Lid plate; 430. Handle; 440. Vent. Detailed Implementation

[0041] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0042] It should be noted that the structures, proportions, and sizes depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention. Specific structures can be described with reference to the accompanying drawings of the patent application.

[0043] This utility model provides a novel negative pressure health-preserving kettle. Please refer to [link / reference]. Figures 1 to 7 As shown, the device includes a heating device 100 for heating the liquid inside the health-preserving kettle, an outer pot 200, an inner pot 300, and a lid 400. The outer pot 200 is located on top of the heating device 100. The lid 400 covers the inner pot 300, and the outer pot 200 and the inner pot 300 are sealed together. The inner pot 300 includes a sealing structure 310, which includes an upper sealing part 311 and a lower sealing part 312. The lower sealing part 312 is connected to the upper sealing part 311 and is sealed to the outer pot 200. The upper sealing part 311 is sealed to the outer pot 200. The sealing structure 310 has a notch 313. The inner pot 300 has a through hole 320, which connects the inner pot 300 to the outer pot 200.

[0044] The inner pot 300 includes an inner pot body 330, and the sealing structure 310 has a stepped structure 314 on its inner side. The sealing structure 310 is connected to the inner pot body 330 through the stepped structure 314.

[0045] The sealing structure 310 is elastic.

[0046] When the notch 313 of the sealing structure 310 of the inner pot 300 is sealed to the outer pot 200 due to its elastic properties, the notch 313 is closed. The sealing structure 310 of the inner pot 300 completely seals the inner cavity of the outer pot 200. The heating device 100 continuously heats the liquid in the health pot. The air in the outer pot 200 expands and forces the liquid in the outer pot through the through hole 320 of the inner pot 300 into the inner pot 300. A liquid level difference is formed between the outer pot 200 and the inner pot 300. The heating device 100 continues to heat the substance in the health pot. When the air pressure in the outer pot 200 rises to a certain level, the gas breaks through the notch 313, making the notch 313 open and allowing the outer pot 200 to communicate with the outside. In this embodiment, when the air pressure in the outer pot 200 rises to 1.2 to 1.5 times atmospheric pressure (absolute pressure of about 121 kPa to 152 kPa), the gas breaks through the notch 313, making the notch 313 open.

[0047] It should be noted that: This application, through the design of the lower sealing part 312, the upper sealing part 311, and the notch 313 of the sealing structure 310 of the inner pot 300, achieves complete sealing by closing the notch 313 when the air pressure is ≤1.2atm, ensuring that the outer pot 200 forms a closed negative pressure chamber during heating; when the air pressure rises to 1.2-1.5atm (121-152kPa), the gas automatically breaks through the notch 313 to release pressure, avoiding the risk of overpressure (such as pot body rupture), and at the same time triggering the outer pot 200 to connect with the outside;

[0048] Furthermore, the through hole 320 of the inner pot 300, driven by air pressure, causes the liquid to circulate between the outer pot 200 and the inner pot 300 and form a liquid level difference, forcing substances (such as medicinal materials) to be repeatedly soaked, thereby increasing the dissolution rate of active ingredients.

[0049] The inner pot body 330 is provided with an annular step 340, which is provided with a first-level step 341 and a second-level step 342. The first-level step 341 is connected to the second-level step 342. The inner pot 300 is closed with the pot lid 400 through the annular step 340.

[0050] The outer vessel 200 is provided with an annular groove 220, and a handle 230 is installed on the outer vessel 200 through the annular groove 220. A liquid outlet tap 210 is connected to the outer vessel 200.

[0051] The lower sealing part 312 is sealed to the inner wall of the outer pot 200, and the upper sealing part 311 is sealed to the upper edge of the outer pot 200.

[0052] The sealing structure 310 includes a positioning rib 315, which is disposed between the upper sealing part 311 and the lower sealing part 312. The positioning rib 315 is used to position the inner pot 300 and the outer pot 200, so that the inner pot 300 is placed at the center of the outer pot 200.

[0053] The sealing structure 310 is a sealing ring, the lower sealing part 312 has a V-shaped cross-section, the upper sealing part 311 has an L-shaped cross-section, and the inner pot 300 is provided with a lifting lug 350. Figure 6 As shown.

[0054] The lid 400 includes a lid seal 410, a lid plate 420, and a handle 430. The handle 430 is connected to the center of the lid plate 420. The lid seal 410 is disposed on the outer periphery of the lid plate 420. The lid 400 is placed on the first step 341 of the inner pot 300. The lid seal 410 is provided with a lid sealing silicone ring 411. The lid 400 is sealed to the inner pot 330 through the lid sealing silicone ring 411. The lid seal 410 and the lid plate 420 are designed to be separate, so that the lid sealing silicone ring 411 can be replaced independently. The lid plate 420 has a vent 440, which, together with the notch 313, forms a dual-channel pressure relief system.

[0055] The cross-section of the cap sealing silicone ring 411 is hook-shaped. The hook of the cap sealing silicone ring 411 is engaged with the secondary step 342 of the inner pot body 330. The end of the hook of the cap sealing silicone ring 411 forms a line seal with the corner of the primary step 341 and the secondary step 342. The hook of the hook-shaped cap sealing silicone ring 411 is engaged with the secondary step 342, and its end forms a line contact seal (non-surface contact) with the corner of the step. When the air pressure increases, a self-tightening effect is generated, and the sealing pressure increases with the increase of air pressure. At the same time, it reduces silicone wear and extends service life.

[0056] The liquid dispensing faucet 210 includes a knob, a valve core, and a conical valve seat. The end of the valve core is a conical plug. The liquid dispensing faucet 210 achieves a seal by rotating the knob so that the conical plug abuts against the conical valve seat. The conical plug of the liquid dispensing faucet 210 and the conical valve seat cooperate to form a mechanical hard seal when the knob is rotated.

[0057] The handle 230 includes a U-shaped rod and an annular clamp. The handle 230 is sleeved with the annular groove 220 of the outer pot 200 body through the annular clamp. The two ends of the U-shaped rod are rotatably connected to the annular clamp.

[0058] The U-shaped rod has a pivot at both ends, and the U-shaped rod is connected to the annular clamp through the pivot. A torsion spring is installed inside the pivot, and the handle 230 automatically resets and flips through the torsion spring.

[0059] The heating device 100 includes a housing, a heating plate for heating the outer pot 200 body, a control circuit board, a temperature sensor, a power interface, and a control component. The housing covers the control circuit board, the temperature sensor, and the control component. The heating plate is located at the upper bottom of the heating device 100 and is in close contact with the bottom of the outer pot 200 body. The temperature sensor, the control component, and the power interface are electrically connected to the control circuit board.

[0060] The control component is an integrated control panel, which is located on the front of the housing.

[0061] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel negative pressure health-preserving kettle, comprising a heating device (100) for heating liquid inside the kettle, an outer pot (200), an inner pot (300), and a lid (400), wherein the outer pot (200) is disposed on top of the heating device (100), and the lid (400) covers the inner pot (300), characterized in that, The outer pot (200) and the inner pot (300) are sealed together. The inner pot (300) includes a sealing structure (310), which includes an upper sealing part (311) and a lower sealing part (312). The lower sealing part (312) and the upper sealing part (311) are connected. The lower sealing part (312) is sealed to the outer pot (200), and the upper sealing part (311) is sealed to the outer pot (200). The sealing structure (310) has a notch (313), and the inner pot (300) has a through hole (320). The inner pot (300) is connected to the outer pot (200) through the through hole (320).

2. The novel negative pressure health-preserving kettle according to claim 1, characterized in that, The inner pot (300) includes an inner pot body (330), and the sealing structure (310) has a stepped structure (314) on its inner side. The sealing structure (310) is connected to the inner pot body (330) through the stepped structure (314). The sealing structure (310) is elastic.

3. The new negative pressure health preserving pot of claim 2, characterized in that, The inner pot body (330) is provided with an annular step (340), the annular step (340) is provided with a first step (341) and a second step (342), the first step (341) and the second step (342) are connected, and the inner pot (300) is covered by the pot lid (400) through the annular step (340).

4. The new negative pressure health preserving pot of claim 2 or 3, characterized in that, The outer vessel (200) is provided with an annular groove (220), and a handle (230) is installed on the outer vessel (200) through the annular groove (220). A liquid outlet tap (210) is connected to the outer vessel (200).

5. The new negative pressure health preserving pot of claim 2 or 3, characterized in that, The lower sealing part (312) is sealed to the inner wall of the outer pot (200), and the upper sealing part (311) is sealed to the upper edge of the outer pot (200). The sealing structure (310) includes a positioning rib (315), which is disposed between the upper sealing part (311) and the lower sealing part (312).

6. The new negative pressure health preserving pot of claim 5, characterized in that, The sealing structure (310) is a sealing ring, the lower sealing part (312) has a V-shaped cross-section, the upper sealing part (311) has an L-shaped cross-section, and the inner pot (300) is provided with a handle (350).

7. The new negative pressure health preserving pot of claim 3, characterized in that, The lid (400) includes a lid seal (410), a lid plate (420), and a handle (430). The handle (430) is connected to the center of the lid plate (420). The lid seal (410) is disposed on the outer periphery of the lid plate (420). The lid (400) is placed on the first step (341) of the inner pot (300). The lid seal (410) is provided with a lid sealing silicone ring (411). The lid (400) is sealed to the inner pot body (330) through the lid sealing silicone ring (411). The lid plate (420) has a vent (440). The cross-section of the lid sealing silicone ring (411) is hook-shaped. The hook of the lid sealing silicone ring (411) is inserted into the secondary step (342) of the inner pot body (330). The end of the hook of the lid sealing silicone ring (411) forms a line seal with the corner of the primary step (341) and the secondary step (342).

8. The new negative pressure health preserving pot of claim 4, characterized in that, The liquid dispensing faucet (210) includes a knob, a valve core, and a conical valve seat. The end of the valve core is a conical plug. The liquid dispensing faucet (210) achieves a seal by rotating the knob so that the conical plug abuts against the conical valve seat.

9. The new negative pressure health preserving pot of claim 4, characterized in that, The handle (230) includes a U-shaped rod and an annular clamp. The handle (230) is sleeved with the annular groove (220) of the outer pot (200) body through the annular clamp. The two ends of the U-shaped rod are rotatably connected to the annular clamp. The U-shaped rod has a pivot at both ends, and the U-shaped rod is connected to the annular clamp through the pivot. A torsion spring is installed inside the pivot, and the handle (230) automatically resets and flips through the torsion spring.

10. The new negative pressure health preserving pot of claim 4, characterized in that, The heating device (100) includes a housing, a heating plate for heating the outer pot (200), a control circuit board, a temperature sensor, a power interface, and a control component. The housing covers the control circuit board, the temperature sensor, and the control component. The heating plate is located at the upper bottom of the heating device (100) and is in close contact with the bottom of the outer pot (200). The temperature sensor, the control component, and the power interface are electrically connected to the control circuit board. The control component is an integrated control panel, which is located on the front of the housing.

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