Multi-gear pressure release valve structure for adjusting pressure of inner cavity of pressure cooker

Abstract

The utility model discloses a multi-gear pressure release valve structure for adjusting the pressure of an inner cavity of a pressure cooker, which comprises a connecting seat and a valve body rotationally connected onto the connecting seat, and a pressure release channel capable of being communicated with the inner cavity of the pressure cooker is arranged on the connecting seat. A plurality of valve element pieces which can be jacked up by different air pressures so as to enable the pressure relief channel to be communicated with the outside world are arranged in the valve body, and after the valve body rotates by a preset angle, one valve element piece is located above the pressure relief channel and blocks the pressure relief channel. According to the multi-gear pressure release valve structure in the scheme, the valve element pieces with different weights or pressures block the pressure release channel by rotating the valve body, so that the limit pressure value in the pressure cooker is regulated and controlled, namely, the cooking pressure of the pressure cooker can be regulated according to the difficulty degree of cooking food, and the situation that the food with low hardness is excessively softened due to the too large cooking pressure is avoided; the pressure in the pot can be adjusted when different foods are cooked, so that the better taste of the foods is ensured, and the loss of nutrition is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure cookers, in particular to a multi-stage pressure relief valve structure for adjusting the internal cavity pressure of a pressure cooker. Background Art

[0002] A pressure cooker is a kitchen appliance. It generally heats water or other liquids in a sealed pot to generate steam and maintains the steam pressure at a level higher than the atmospheric pressure to cook food. Since the water vapor in the pot cannot escape, the pressure gradually increases, and the temperature also rises accordingly, which enables the food to be cooked faster.

[0003] Existing pressure cookers generally preset a maximum pressure value for pressure relief through a safety valve. When using a pressure cooker, electronic components are often required to keep the pressure inside the pressure cooker within a preset value. This means that the pressure inside is a constant value regardless of the type of food being cooked. However, different foods have different degrees of difficulty in being cooked. As a result, foods with low hardness are prone to excessive softening, resulting in poor taste and serious nutrient loss. Of course, there are also a small number of pressure cookers on the market that can adjust the constant pressure value inside the pressure cooker through electronic components. However, such pressure cookers also have some problems. First, the manufacturing cost is relatively high, and it is difficult to repair and the repair cost is high once a failure occurs. Second, after long-term use, the electronic components may age or be damaged, affecting the performance of the entire pressure cooker. Third, when the voltage is unstable or the pressure is too high, the electronic components may be damaged, resulting in the pressure cooker being unable to work properly.

[0004] The present utility model is made based on the above situation. Content of the Utility Model

[0005] The utility model overcomes the deficiencies of the prior art and provides a multi-stage pressure relief valve structure for adjusting the internal cavity pressure of a pressure cooker.

[0006] The present utility model is realized through the following technical solutions:

[0007] A multi-stage pressure relief valve structure for adjusting the internal cavity pressure of a pressure cooker, including a connection seat and a valve body rotatably connected to the connection seat. The connection seat is provided with a pressure relief channel that can communicate with the internal cavity of the pressure cooker. The valve body is provided with a plurality of valve core members that can be lifted by different air pressures to connect the pressure relief channel with the outside. When the valve body rotates a preset angle, one of the valve core members is located above the pressure relief channel and blocks the pressure relief channel.

[0008] For a multi-stage pressure relief valve structure for adjusting the internal cavity pressure of a pressure cooker as described above, the weights of each of the plurality of valve core members are different.

[0009] A multi-stage pressure relief valve structure for regulating the pressure inside a pressure cooker as described above, wherein the valve core member includes a plug and a spring for pressing down the plug, and the elastic coefficients of the springs in each of the multiple valve core members are different.

[0010] A multi-stage pressure relief valve structure for regulating the pressure inside a pressure cooker as described above, wherein a cavity is provided inside the valve body, and a partition plate is further provided inside the valve body to divide the cavity into a pressure relief cavity and a socket cavity up and down. A guiding hole for the valve core member to pass through is provided on the partition plate, and the pressure relief cavity communicates with the outside.

[0011] A multi-stage pressure relief valve structure for regulating the pressure inside a pressure cooker as described above, wherein the connecting seat includes a connecting column and a connecting boss connected to the upper end of the connecting column. The air inlet of the pressure relief channel is provided on the lower end surface of the connecting column, and the air outlet of the pressure relief channel is provided on the upper surface of the connecting boss. The cross-section of the socket cavity is circular, the connecting boss is a frustum that can cooperate with the socket cavity, and the lower surface of the valve core member can abut against the upper surface of the connecting boss to block the pressure relief channel.

[0012] A multi-stage pressure relief valve structure for regulating the pressure inside a pressure cooker as described above, wherein a sealing ring for sealing is provided between the upper surface of the connecting boss and the lower surface of the partition plate.

[0013] A multi-stage pressure relief valve structure for regulating the pressure inside a pressure cooker as described above, wherein a snap structure for restricting it from detaching from the connecting boss is provided at the lower part of the valve body.

[0014] A multi-stage pressure relief valve structure for regulating the pressure inside a pressure cooker as described above, wherein the valve body includes a valve shell, the pressure relief cavity is provided inside the valve shell, a valve cover for opening the pressure relief cavity is provided on the valve shell, an air outlet hole for communicating the pressure relief cavity with the outside is provided on the valve cover, and an indication mark for indicating which valve core member blocks the pressure relief channel is provided on the valve cover.

[0015] A multi-stage pressure relief valve structure for regulating the pressure inside a pressure cooker as described above, wherein an exhaust channel for communicating the pressure relief channel with the pressure relief cavity is provided on the valve core member when it is lifted by air pressure.

[0016] A multi-stage pressure relief valve structure for regulating the pressure inside a pressure cooker as described above, wherein a connecting structure for connecting it to the pressure cooker lid is provided at the lower part of the connecting column.

[0017] Compared with the prior art, the present utility model has the following advantages:

[0018] 1. In this case, the multi-stage pressure relief valve structure regulates the ultimate pressure value inside the pressure cooker by rotating the valve body to block the pressure relief channel with valve core parts of different weights or pressures, that is, it can adjust the steaming pressure of the pressure cooker according to the difficulty of cooking food, so as to prevent soft foods with low hardness from being over-softened due to excessive steaming pressure, enabling different foods to adjust the pressure inside the pot during steaming, thus ensuring a good taste and reducing nutrient loss.

[0019] 2. The multi-stage pressure relief valve structure in this case adjusts the ultimate pressure value inside the pressure cooker through a pure mechanical structure. Compared with regulation by electronic components, the mechanical parts of mechanical regulation are relatively simple, easy to disassemble and repair. Replacing damaged parts is usually more straightforward and requires less professional knowledge; since it does not involve electronic components, the production cost is relatively low; mechanical parts can often withstand harsher conditions than electronic parts, such as high temperature and humid environments, and are usually more stable than electronic parts after long-term use; users can visually see the adjustment position, which is easy to understand and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following further details the specific embodiments of the present invention in conjunction with the drawings, where:

[0021] Figure 1 is a schematic diagram of the usage state of the present invention installed on the pressure cooker lid Figure 1 ;

[0022] Figure 2 is a schematic diagram of the usage state of the present invention installed on the pressure cooker lid Figure 2 ;

[0023] Figure 3 is Figure 2 an enlarged view of part A in

[0024] Figure 4 is a schematic structural diagram of the present invention;

[0025] Figure 5 is a schematic cross-sectional view of the present invention;

[0026] Figure 6 is an exploded view of the present invention;

[0027] Figure 7 is a schematic cross-sectional view of another embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following further describes the present invention in conjunction with the drawings:

[0029] As shown in Figures 1 to 7A multi-stage pressure relief valve structure for regulating the pressure inside a pressure cooker is shown, which includes a connecting seat 1 and a valve body 2 rotatably connected to the connecting seat 1. The connecting seat 1 is provided with a pressure relief channel 11 that can communicate with the inner cavity of the pressure cooker. The valve body 2 is provided with a plurality of valve core parts 3 that can be lifted by different air pressures to connect the pressure relief channel 11 with the outside. When the valve body 2 rotates a preset angle, one of the valve core parts 3 is located above the pressure relief channel 11 and blocks the pressure relief channel 11.

[0030] In this multi-stage pressure relief valve structure, by rotating the valve body 2, the valve core part 3 that can be lifted by different air pressures is driven to block the pressure relief channel 11, thereby regulating the limit pressure value inside the pressure cooker, that is, the steaming pressure of the pressure cooker can be adjusted according to the difficulty of cooking food, so as to avoid over-softening of foods with low hardness due to excessive steaming pressure, enabling different foods to adjust the pressure inside the pot during steaming, thus ensuring a better taste and reducing nutrient loss. At the same time, the multi-stage pressure relief valve structure in this case adjusts the limit pressure value inside the pressure cooker through a pure mechanical structure. Compared with regulation by electronic components, the mechanical components of mechanical regulation are relatively simple, easy to disassemble and repair. Replacing damaged parts is usually more straightforward and requires less professional knowledge; since it does not involve electronic components, the production cost is relatively low; mechanical components can often withstand harsher conditions than electronic components, such as high temperature and humid environments. After long-term use, mechanical components are usually more stable than electronic components; users can intuitively see the adjustment position, which is easy to understand and operate.

[0031] In some embodiments, the weight of each of the plurality of valve core parts 3 is different, that is, different air pressures are required to overcome their pressures to lift the valve core part 3 for pressure relief, thereby adjusting the limit pressure value inside the pressure cooker. The valve core part 3 can be made of materials with different densities to make the weight of each valve core part 3 different; of course, the weight of each valve core part 3 can also be made different by manufacturing different lengths from the same material; the weight can also be made different by connecting different counterweights to the valve core part 3.

[0032] In some embodiments, the valve core part 3 includes a blocking block 33 and a spring 32 that presses down the blocking block 33. The elastic coefficient of each spring 32 among the plurality of valve core parts 3 is different. By using springs 32 with different elastic forces to press the blocking block 33, different valve core parts 3 require different air pressures to overcome their pressures to lift the blocking block 33 for pressure relief. Among them, a limit groove 311 for the spring 32 can be placed at the end of the blocking block 33 to limit the spring 32. The lower end of the spring 32 abuts against the bottom of the limit groove 311, and the upper end of the spring 32 abuts against the lower surface of the valve cover 22. Limit posts can also be provided on the lower surface of the valve cover 22 to limit the spring 32.

[0033] In some embodiments, a cavity is provided inside the valve body 2, and a partition plate 5 is further provided inside the valve body 2 to divide the cavity into a pressure relief cavity 41 and a socket cavity 42 up and down. The pressure relief cavity 41 communicates with the outside. A guiding hole 51 for the valve core member 3 to pass through is provided on the partition plate 5, and the up and down movement of the valve core member 3 is guided through the guiding hole 51, so as to prevent the valve core member 3 from being misaligned and losing its pressure relief function. Among them, the partition plate 5 and the valve body 2 are of an integral structure. Of course, the partition plate 5 can also be connected inside the valve body 2 through other connection structures such as threaded fasteners.

[0034] Further, the connection seat 1 includes a connection column 12 and a connection boss 13 connected to the upper end of the connection column 12. The air inlet of the pressure relief passage 11 is provided on the lower end surface of the connection column 12, and the air outlet of the pressure relief passage 11 is provided on the upper surface of the connection boss 13. The cross section of the socket cavity 42 is circular, and the connection boss 13 is a frustum that can cooperate with the socket cavity 42. The lower surface of the valve core member 3 can abut against the upper surface of the connection boss 13 to block the pressure relief passage 11, and a snap structure 7 for restricting the valve body 2 from detaching from the connection boss 13 is provided at the lower part of the valve body 2. Of course, the valve body 2 can also be restricted from detaching from the connection boss 13 through other restricting structures.

[0035] Further, a sealing ring 6 for sealing is provided between the upper surface of the connection boss 13 and the lower surface of the partition plate 5. The leakage of the pressure relief valve structure is restricted through the sealing ring 6. Among them, the above-mentioned sealing ring 6 can be a silicone sealing ring or other types of sealing rings.

[0036] In some embodiments, the valve body 2 includes a valve housing 21, the pressure relief cavity 41 is provided inside the valve housing 21, a valve cover 22 for opening the pressure relief cavity 41 is provided on the valve housing 21, an air outlet hole 221 for communicating the pressure relief cavity 41 with the outside is provided on the valve cover 22, and an indication mark 222 for indicating which valve core member 3 blocks the pressure relief passage 11 is provided on the valve cover 22. The indication mark 222 includes an indication arrow and a gear value. Among them, the valve cover 22 can be connected and fixed to the valve housing 21 through bolts 20. Of course, it can also be connected to the valve housing 21 through other connection structures. A positioning groove 200 is provided at the upper end of the valve housing 21, and a positioning pin 220 that can be inserted into the positioning groove 200 for positioning is provided at the lower part of the valve cover 22. Through the cooperation of the positioning pin 220 and the positioning groove 200, the indication mark 222 can correctly correspond to each valve core member 3.

[0037] In some embodiments, an exhaust passage 31 for communicating the pressure relief passage 11 with the pressure relief cavity 41 is provided on the valve core member 3 when it is lifted by air pressure. When the pressure in the pressure cooker reaches the preset value, the air pressure lifts the valve core member 3, and the steam in the pot is discharged to the outside through the pressure relief passage 11, the exhaust passage 31, and the air outlet hole 221 in sequence.

[0038] In some embodiments, a connection structure 8 capable of connecting the lower part of the connecting column 12 to the pressure cooker lid is provided. Among them, the connection structure 8 may be a threaded structure and two nuts capable of cooperating with it. Of course, the connecting column 12 can also be connected to the pressure cooker lid by other connection methods.

Claims

1. A multi-stage pressure relief valve structure for regulating the pressure inside the pressure cooker, characterized in that: It includes a connection base (1) and a valve body (2) rotatably connected to the connection base (1). A pressure relief channel (11) that can communicate with the inner cavity of the pressure cooker is provided on the connection base (1). Multiple valve core members (3) that can be lifted by different air pressures to connect the pressure relief channel (11) with the outside are provided in the valve body (2). When the valve body (2) rotates a preset angle, one of the valve core members (3) is located above the pressure relief channel (11) and blocks the pressure relief channel (11).

2. The multi-stage pressure relief valve structure for adjusting the pressure inside the pressure cooker according to claim 1, wherein: The weight of each of the multiple valve core members (3) is different.

3. The multi-stage pressure relief valve structure for adjusting the internal cavity pressure of a pressure cooker according to claim 1, characterized in that: The valve core member (3) includes a plug block (33) and a spring (32) that presses down the plug block (33). The elastic coefficient of each spring (32) among the multiple valve core members (3) is different.

4. A multi-stage pressure relief valve structure for regulating the internal cavity pressure of a pressure cooker according to claim 2 or 3, characterized in that: A cavity is provided in the valve body (2). A partition plate (5) that divides the cavity into a pressure relief cavity (41) and a socket cavity (42) up and down is also provided in the valve body (2). A guide hole (51) for the valve core member (3) to pass through is provided on the partition plate (5). The pressure relief cavity (41) communicates with the outside.

5. The multi-stage pressure relief valve structure for adjusting the pressure inside the pressure cooker according to claim 4, characterized in that: The connection base (1) includes a connection column (12) and a connection boss (13) connected to the upper end of the connection column (12). The air inlet of the pressure relief channel (11) is provided on the lower end surface of the connection column (12), and the air outlet of the pressure relief channel (11) is provided on the upper surface of the connection boss (13). The cross-section of the socket cavity (42) is circular. The connection boss (13) is a frustum that can cooperate with the socket cavity (42). The lower surface of the valve core member (3) can abut against the upper surface of the connection boss (13) to block the pressure relief channel (11).

6. A multi-stage pressure relief valve structure for adjusting the internal cavity pressure of a pressure cooker according to claim 5, characterized in that: A sealing ring (6) for sealing is provided between the upper surface of the connection boss (13) and the lower surface of the partition plate (5).

7. The multi-stage pressure relief valve structure for adjusting the internal cavity pressure of a pressure cooker according to claim 6, wherein: A snap structure (7) for restricting its detachment from the connection boss (13) is provided at the lower part of the valve body (2).

8. A multi-stage pressure relief valve structure for adjusting the internal cavity pressure of a pressure cooker according to claim 7, characterized in that: The valve body (2) includes a valve housing (21). The pressure relief cavity (41) is provided in the valve housing (21). A valve cover (22) for opening the pressure relief cavity (41) is provided on the valve housing (21). The valve cover (22) is provided with an air outlet hole (221) for communicating the pressure relief cavity (41) with the outside, and an indication mark (222) for indicating which valve core member (3) blocks the pressure relief channel (11) is provided on the valve cover (22).

9. A multi-stage pressure relief valve structure for adjusting the internal cavity pressure of a pressure cooker according to claim 8, characterized in that: An exhaust channel (31) that can connect the pressure relief channel (11) with the pressure relief cavity (41) when the valve core member (3) is lifted by air pressure is provided on the valve core member (3).

10. A multi-stage pressure relief valve structure for adjusting the internal cavity pressure of a pressure cooker according to claim 5, characterized in that: A connection structure (8) for connecting it to the pressure cooker lid is provided at the lower part of the connection column (12).

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