A steam valve and a cooker provided with the steam valve

Abstract

The utility model relates to a kind of steam valve and the pot of installing steam valve, for being set in the steam exhaust of pot, including valve seat and the valve cover fixed to the valve seat;The space enclosed by the valve seat and valve cover constitutes cooling cavity;The steam valve further includes steam inlet, steam outlet and cold air inlet opened on cooling cavity;The steam valve further includes pressure-limiting rubber pad;Pressure-limiting rubber pad is inside cooling cavity, movably covered on steam inlet.The utility model is set in cooling cavity with the pressure-limiting rubber pad that can move cover steam inlet, can maintain micro-pressure environment inside pot, it is favorable to promote the cooking temperature inside pot.The utility model is opened with cold air inlet on cooling cavity, introduce the cold air outside steam valve, steam cooling, with bubble breaking effect, avoid the foam overflow generated by food soup.

Description

Technical Field

[0001] This utility model relates to electrical structures, specifically to a steam valve and a cookware equipped with a steam valve. Background Technology

[0002] When cooking porridge or soup, the liquid is prone to overflowing after boiling. To increase the cooking speed of cookware such as rice cookers, high power is required to achieve rapid boiling, which makes overflow more likely. Steam valves are usually installed on cookware to prevent this. Steam valves typically release steam passively by setting a fixed weight (such as a movable counterweight at the top of the valve) or a fixed spring threshold (a compression spring is installed inside the valve). This causes significant pressure fluctuations inside the cookware. That is, the pressure inside the pot is high before steam is released, and then suddenly drops after exceeding the pressure threshold and being released. When the liquid boils vigorously, the steam flow rate is too fast, and under unstable pressure, the steam is more likely to carry rice water, soup, and other liquids and suddenly spray out.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses a steam valve and a cookware equipped with a steam valve.

[0005] The technical solution adopted in this embodiment of the utility model is as follows:

[0006] A steam valve is provided for installation at the steam outlet of a cookware, comprising a valve seat and a valve cover fixed to the valve seat; the space enclosed by the valve seat and the valve cover constitutes a cooling chamber; the steam valve further comprises a steam inlet, a steam outlet and a cold air inlet opened on the cooling chamber; the steam valve further comprises a pressure-limiting rubber gasket; the pressure-limiting rubber gasket is inside the cooling chamber and movably covers the steam inlet.

[0007] A further technical solution is that a guide channel is provided on the valve seat; the lower end of the guide channel is connected to the cavity of the pot; the steam inlet is opened at the upper end of the guide channel near the cold air inlet; and the pressure-limiting gasket is installed at the upper end of the guide channel.

[0008] A further technical solution is that the pressure-limiting pad includes an elastic part and an mounting part; the elastic part is a sheet-like structure; the mounting part is a columnar structure fixed to the center of the elastic part; and a mounting hole matching the mounting part is provided at the upper end of the guide channel.

[0009] A further technical solution is that the pressure-limiting pad also includes a sealing portion surrounding the outer periphery of the elastic portion; the sealing portion is bent downward or protrudes downward; the guide channel also includes a boss surrounding the mounting hole corresponding to the position of the sealing portion.

[0010] A further technical solution is to provide a snap-fit ​​structure protruding from the outer wall of the mounting part at the lower end of the mounting part.

[0011] A further technical solution is that there is a preset distance between the steam inlet and the steam outlet, or a flow guiding structure is provided between the steam inlet and the steam outlet so that the airflow flows from the steam inlet through the area of ​​the cold air inlet and then to the steam outlet.

[0012] A further technical solution is to provide a lower flange that protrudes toward the interior of the cooling chamber on the side edge of the cold air inlet near the steam inlet.

[0013] A further technical solution is that an upper flange protruding towards the outside of the cooling chamber is provided on the edge of the cold air inlet near the steam outlet; the upper flange and the lower flange are parallel to each other; the cold air channel is elongated and formed between the upper flange and the lower flange.

[0014] A further technical solution is that the lower flange and the inner wall surface of the valve cover have a gradual and smooth transition.

[0015] A cookware equipped with a steam valve as described above, the cookware comprising a pot body and a lid; the steam valve being mounted on the lid of the cookware; the steam inlet communicating with a cooking cavity in the pot body; and the steam outlet and the cold air inlet communicating with a space outside the lid.

[0016] The beneficial effects of this utility model embodiment are as follows:

[0017] This invention features a pressure-limiting gasket inside the cooling chamber that can be movable to cover the steam inlet, maintaining a slight pressure environment inside the cookware and thus improving the cooking temperature. A cold air inlet is also provided in the cooling chamber to introduce cold air from outside the steam valve, cooling the steam and breaking up bubbles to prevent foam from overflowing from food or broth.

[0018] In this embodiment of the invention, the pressure-limiting rubber pad is located inside the cooling chamber. When the pressure inside the pot increases, the pressure-limiting rubber pad is pushed open, and steam directly enters the cooling chamber. The steam is condensed by the cold air outside the cooling chamber. This allows the pressure relief process to be carried out simultaneously with the steam cooling. Steam condensation is completed at the same time as the pressure is released, reducing heat loss and preventing high-temperature steam from being directly discharged to the outside. It also improves safety and kitchen environmental friendliness.

[0019] In embodiments of this invention, the pressure-limiting rubber pad and the cold air inlet also have a synergistic effect. The dynamic pressure relief mechanism of the pressure-limiting rubber pad maintains a slightly pressurized environment inside the pot, while the cold air from the cooling chamber accelerates steam condensation and enhances the ability to prevent overflow. Ultimately, the combination of these two features allows the cookware to improve thermal efficiency through slight pressurization while preventing overflow even at high power, significantly shortening cooking time. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of the steam valve in an embodiment of this utility model.

[0021] Figure 2 This is a three-dimensional cross-sectional view of the steam valve in an embodiment of this utility model.

[0022] Figure 3 This is a cross-sectional view of the exploded view of the valve seat in an embodiment of this utility model.

[0023] Figure 4 This is a cross-sectional view of the pressure-limiting rubber pad in an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the flow of steam and cold air in the cooling chamber in an embodiment of the present invention.

[0025] Figure 6 This is an enlarged cross-sectional view of the cold air inlet in an embodiment of this utility model.

[0026] In the diagram: 1. Valve cover; 2. Valve seat; 3. Steam inlet; 4. Steam outlet; 5. Cooling chamber; 6. Cold air inlet; 61. Upper flange; 62. Lower flange; 63. Cold air passage; 7. Pressure limiting gasket; 71. Elastic part; 72. Sealing part; 73. Mounting part; 74. Snap-fit ​​structure; 8. Guide passage; 81. Mounting hole; 82. Boss; 9. Inner wall surface. Detailed Implementation

[0027] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0029] Figure 1 This is a cross-sectional view of the steam valve in an embodiment of this utility model. Figure 2 This is a three-dimensional sectional view of the steam valve in an embodiment of this utility model. Figure 1 , Figure 2 As shown, the steam valve includes a valve seat 2 and a valve cover 1 fixed to the valve seat 2. The space enclosed by the valve seat 2 and the valve cover 1 constitutes a cooling chamber 5. The steam valve also includes a steam inlet 3, a steam outlet 4, and a cold air inlet 6, all located on the cooling chamber 5. When the steam valve is installed on the lid of a cookware, and the lid is on the cookware body, the steam inlet 3 communicates with the cooking chamber, the steam outlet 4 communicates with the outside of the cookware, and the cold air inlet 6 also communicates with the outside of the cookware. The cold air inlet 6 is used to introduce cold air from outside the steam valve, mixing it with the steam flow to lower the steam temperature, enhance the defoaming effect, and prevent overflow.

[0030] Figure 3 This is a cross-sectional view of the exploded view of the valve seat in an embodiment of this utility model. Figure 4 This is a cross-sectional view of the pressure-limiting rubber pad in an embodiment of this utility model. Figures 1-4 As shown, the steam valve also includes a pressure-limiting gasket 7. The pressure-limiting gasket 7 is located inside the cooling chamber 5 and movably covers the steam inlet 3. When the pressure inside the cookware is low, the pressure-limiting gasket 7 tightly covers the steam inlet 3, sealing the inside of the cookware and increasing the internal pressure. When the internal pressure increases and the liquid is about to boil over, the steam will push the pressure-limiting gasket 7 up, allowing it to enter the cooling chamber 5 from the steam inlet 3 and then exit from the steam outlet 4, releasing the internal pressure and preventing the boiling liquid from overflowing with the steam. When the pressure falls below the sealing threshold of the pressure-limiting gasket 7, the pressure-limiting gasket 7, due to its own weight and elasticity, re-covers the steam inlet 3, sealing it again.

[0031] Because the pressure-limiting gasket 7 is made of elastic material, its force covering the steam inlet 3 is not rigid, so the pressure required to open it is low. The dynamic seal-depressurization cycle of the pressure-limiting gasket 7 with its low pressure threshold maintains a low and stable pressure environment inside the cookware, which is different from a completely unpressurized open pot and also different from the high-pressure state of a high-pressure device. It increases the temperature inside the pot by slightly increasing the pressure, thus accelerating cooking efficiency.

[0032] Furthermore, a guide channel 8 is provided on the valve seat 2. The guide channel 8 is a hollow column, with its lower end connected to the cooking cavity of the cookware. The steam inlet 3 is located at the upper end of the guide channel 8 and is close to the cold air inlet 6. The pressure-limiting gasket 7 is installed at the upper end of the guide channel 8. The steam flow from the cooking cavity of the cookware through the guide channel 8 flows into the cooling cavity 5 through the steam inlet 3, and flows through the area where the cold air inlet 6 is located, that is, below or near the cold air inlet 6. The guide channel 8 concentrates and guides the steam as it rises from the cooking cavity and enters the cooling cavity 5 through the steam inlet 3, bringing it close to the specific area near the cold air inlet 6, thus limiting the direction of steam flow to a certain extent and creating the necessary conditions for the subsequent Bernoulli effect. At the same time, the guide channel 8 provides the installation position for the pressure-limiting gasket 7.

[0033] Furthermore, the pressure-limiting pad 7 includes an elastic portion 71 and a mounting portion 73. The elastic portion 71 is a sheet-like structure; in this embodiment, the elastic portion 71 is circular, but it can also be other suitable shapes, as long as it can cover the steam inlet 3. The mounting portion 73 is a columnar structure located at the center of the elastic portion 71. A mounting hole 81 matching the mounting portion 73 is provided at the upper end of the guide channel 8. The mounting portion 73 is inserted into the mounting hole 81, and the pressure-limiting pad 7 is mounted above the guide channel 8.

[0034] Furthermore, the pressure-limiting pad 7 also includes a sealing portion 72 surrounding the elastic portion 71. The sealing portion 72 has an annular structure, bent downwards or protruding downwards. The guide channel 8 also includes a boss 82 surrounding the mounting hole 81, corresponding to the position of the sealing portion 72. When the pressure-limiting pad 7 is installed above the guide channel 8, the sealing portion 72 can mate with the boss 82 to form a sealable space surrounding the steam inlet 3. When the pressure-limiting pad 7 falls and the sealing portion 72 mates with the boss 82, the steam inlet 3 is sealed. When the pressure-limiting pad 7 is lifted by steam, it does not affect the steam entering the cooling chamber 5 from the steam inlet 3.

[0035] Furthermore, a snap-fit ​​structure 74 is provided at the lower end of the mounting portion 73. The snap-fit ​​structure 74 is a protruding structure surrounding the outer diameter of the mounting portion 73, and there is a certain gap between the snap-fit ​​structure 74 and the lower surface of the elastic portion 71. When the pressure-limiting pad 7 is installed on the guide channel 8, the snap-fit ​​structure 74 ensures that the pressure-limiting pad 7 is reliably fixed to the upper end of the guide channel 8, so that it can cover the upper end of the guide channel 8, and can also be lifted a distance by steam without loosening.

[0036] Furthermore, such as Figure 1 , Figure 2 As shown, the cold air inlet 6 is located in the airflow channel between the steam inlet 3 and the steam outlet 4, and there is a preset distance between the steam inlet 3 and the steam outlet 4. Alternatively, a flow guiding structure is provided between the steam inlet 3 and the steam outlet 4, ensuring that steam inevitably flows through the location of the cold air inlet 6 while preventing steam from flowing directly from the steam inlet 3 to the steam outlet 4. This ensures that the steam has a certain flow velocity when it flows to the area of ​​the cold air inlet 6, thereby creating a low-pressure area near the cold air inlet 6. The pressure difference between the external atmospheric pressure and this low-pressure area will push the external cold air from the cold air inlet 6 into the cooling chamber 5. If the steam inlet 3 and the steam outlet 4 are directly opposite each other or too close, the steam flow will cause the steam to flow directly from the steam inlet 3 to the steam outlet 4, resulting in insufficient airflow velocity near the cold air inlet 6. The flow guiding structure can be a baffle structure such as a baffle.

[0037] Figure 5 This is a schematic diagram illustrating the flow of steam and cold air in the cooling chamber according to an embodiment of this utility model. (Reference) Figure 5 Steam inflow A enters the cooking cavity of the cookware through the guide channel 8 and flows into the cooling cavity 5 from the steam inlet 3. Below or near the cold air inlet 6, a high-velocity, low-pressure zone B is generated due to the Bernoulli effect, which generates a cold air inflow C at the cold air inlet 6. This accelerates the cooling of the hot steam and bubbles. The steam cooled by the cold air forms a steam outflow D, which flows out of the cooling cavity 5 from the steam outlet 4, that is, out of the cookware.

[0038] This embodiment utilizes the Bernoulli effect of airflow, introducing cold air from outside the cookware into the cooling chamber 5 of the steam valve through the cold air inlet 6. This accelerates the cooling of hot steam and bubbles within the cooling chamber 5, enhancing the steam valve's bubble-breaking and overflow-preventing capabilities, thus preventing overflow. Furthermore, combined with the low-pressure threshold dynamic pressure relief function of the pressure-limiting gasket 7, the two work together to allow the cookware to improve thermal efficiency through a micro-pressure environment while simultaneously allowing for higher boiling power due to the enhanced overflow prevention capability. This creates a synergistic working mode of safe pressurization and vigorous boiling, significantly shortening cooking time and improving the taste of the food.

[0039] Figure 6 This is an enlarged cross-sectional view of the cold air inlet in an embodiment of this utility model. Figure 1 , Figure 2 and Figure 6As shown, a lower flange 62 protruding towards the interior of the cooling chamber 5 is provided on the edge of the cold air inlet 6 near the steam inlet 3. On the one hand, the lower flange 62 forms a certain barrier between the steam inlet 3 and the steam outlet 4, preventing them from directly facing each other. On the other hand, when the steam flow passes near the lower flange 62, the flow channel narrows to a certain extent, the flow velocity of the steam flow increases, and it is easier to trigger the Bernoulli effect, drawing in outside cold air at the cold air inlet 6.

[0040] Furthermore, an upper flange 61 is provided on the edge of the cold air inlet 6 near the steam outlet 4, protruding towards the outside of the cooling chamber 5. The upper flange 61 optimizes the flow direction of the cold air, allowing the cold air to enter the cooling chamber 5 more smoothly.

[0041] Furthermore, the upper flange 61 and the lower flange 62 are parallel to each other, and the cold air channel 63 is a long, narrow louver structure formed between the upper flange 61 and the lower flange 62. The cold air channel 63 is perpendicular to the steam flow direction, which includes both perpendicular and approximately perpendicular situations. The long, narrow cold air inlet 6, which is almost perpendicular to the steam flow direction, also allows the cold air entering the cooling chamber 5 to evenly cover the entire steam flow channel, increasing the steam cooling efficiency.

[0042] Furthermore, the lower flange 62 and the inner wall surface 9 of the valve cover 1 gradually transition smoothly, making the steam flow more uniform near the lower flange 62 and allowing the steam to pass through smoothly.

[0043] This embodiment also discloses a cookware equipped with a steam valve. The cookware includes a pot body and a lid. The steam valve is installed on the lid. The steam inlet is connected to the cooking cavity in the pot body, and the steam outlet and cold air inlet are connected to the space outside the lid. The cookware can be a rice cooker, an electric pressure cooker, or other cooking equipment that heats or cooks by generating steam, and requires steam regulation via a steam valve to create a slight pressure effect while preventing contents from overflowing.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A steam valve characterized by, The steam valve is used to install a steam outlet on a cookware and includes a valve seat and a valve cover fixed to the valve seat; the space enclosed by the valve seat and the valve cover constitutes a cooling chamber; the steam valve also includes a steam inlet, a steam outlet and a cold air inlet opened on the cooling chamber; the steam valve also includes a pressure-limiting rubber gasket; the pressure-limiting rubber gasket is inside the cooling chamber and movably covers the steam inlet.

2. The steam valve of claim 1, wherein A guide channel is provided on the valve seat; the lower end of the guide channel is connected to the cavity of the pot; the steam inlet is opened at the upper end of the guide channel, close to the cold air inlet; the pressure limiting gasket is installed at the upper end of the guide channel.

3. The steam valve of claim 2, wherein, The pressure-limiting pad includes an elastic part and a mounting part; the elastic part is a sheet-like structure; the mounting part is a columnar structure fixed to the center of the elastic part; and a mounting hole matching the mounting part is provided at the upper end of the guide channel.

4. The steam valve of claim 3, wherein, The pressure-limiting pad also includes a sealing portion surrounding the outer periphery of the elastic portion; the sealing portion is bent downward or protrudes downward; the guide channel also includes a boss surrounding the mounting hole corresponding to the position of the sealing portion.

5. The steam valve of claim 3, wherein, A snap-fit ​​structure protruding from the outer wall of the mounting part is provided at the lower end of the mounting part.

6. The steam valve of claim 1, wherein, There is a preset distance between the steam inlet and the steam outlet, or a flow guiding structure is provided between the steam inlet and the steam outlet so that the airflow passes through the area of ​​the cold air inlet from the steam inlet and then flows to the steam outlet.

7. The steam valve of claim 6, wherein, A lower flange protruding towards the interior of the cooling chamber is provided on the side edge of the cold air inlet near the steam inlet.

8. The steam valve of claim 7, wherein, An upper flange protruding towards the outside of the cooling chamber is provided on the edge of the cold air inlet near the steam outlet; the upper flange and the lower flange are parallel to each other; the cold air channel is elongated and formed between the upper flange and the lower flange.

9. The steam valve of claim 7, wherein, The lower flange and the inner wall surface of the valve cover have a smooth, gradual transition.

10. A cookware equipped with a steam valve as described in any one of claims 1 to 9, characterized in that, The cookware includes a pot body and a lid; the steam valve is installed on the lid of the cookware; the steam inlet is connected to the cooking cavity in the pot body; the steam outlet and the cold air inlet are connected to the space outside the lid.

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