Anti-overflow anti-blocking cover and pressure cooker

Abstract

The utility model discloses an anti-overflow anti-blocking cover and a pressure cooker, belongs to the technical field of cooking utensils, and aims to overcome the defect that an existing pressure cooker is easy to overflow. The anti-overflow anti-blocking cover comprises an outer cover body and an inner cover body arranged in the outer cover body, an outer through hole is formed in the side wall of the outer cover body, a step face is arranged on the side wall of the inner cover body, a backflow hole is formed in the bottom of the anti-blocking cover, an elastic cushion is arranged below the backflow hole to open or close the backflow hole, and an inner through hole is formed in the step face. And an air outlet of the inner through hole faces the backflow hole. The outlet of the inner through hole faces the elastic cushion, steam directly acts on the elastic cushion when passing through the inner through hole, so that the elastic cushion deforms, the backflow hole is opened, condensed water formed in the anti-blocking cover can flow back into the pot body in time, the anti-overflow function is achieved, and the risk of overflowing from the pot is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of cooking utensils and relates to an anti-overflow and anti-blocking cover and a pressure cooker. Background Art

[0002] An existing pressure cooker has a double-layer anti-blocking cover on its cover, which includes an inner cover and an outer cover, an inner through hole on the side wall of the inner cover, and an outer through hole on the side wall of the outer cover, the inner cover has an inner chamber, the outer cover has an outer chamber, the inner cover is installed in the outer chamber, the cover has an exhaust pipe connected to the inner chamber, and the steam in the pot can be discharged in sequence through the outer through hole, the outer chamber, the inner through hole, the inner chamber and the exhaust pipe. A reflux hole is provided at the bottom of the anti-blocking cover, and an elastic pad is provided at the reflux hole to block the reflux hole. When there is a lot of condensed water in the inner chamber, the elastic pad is deformed under the gravity of the condensed water, so that the reflux hole is opened, and the condensed water flows back into the pot body, reducing the risk of overflow. However, the elastic pad of this pressure cooker can only open the reflux hole when a lot of condensed water accumulates in the inner chamber, and still has a large risk of overflow. Summary of the invention

[0003] The utility model aims to solve the problems existing in the prior art and proposes an anti-overflow and anti-blocking cover and a pressure cooker, aiming to overcome the defect that the prior pressure cooker is easy to overflow.

[0004] The utility model is achieved in this way:

[0005] An anti-overflow and anti-blocking cover comprises an outer cover body and an inner cover body arranged in the outer cover body, wherein the side wall of the outer cover body is provided with an outer through hole, and is characterized in that the side wall of the inner cover body is provided with a step surface, a reflux hole is provided at the bottom of the anti-blocking cover, an elastic pad is provided below the reflux hole to open or close the reflux hole, and an inner through hole is provided on the step surface, and an air outlet of the inner through hole faces the reflux hole.

[0006] Preferably, the elastic pad is circular.

[0007] Preferably, the elastic pad comprises a connecting portion, the connecting portion extends to a sealing portion in all directions, and the sealing portion closes or opens the reflux hole.

[0008] Preferably, the middle portion of the elastic pad has a fixing portion, and the fixing portion is clamped and fixed to the bottom of the outer cover body.

[0009] Preferably, the distance from the projection of the inner through hole on the elastic pad to the edge of the elastic pad is smaller than the distance to the center of the elastic pad.

[0010] Preferably, the inner through hole is lower than the outer through hole.

[0011] Preferably, the distance from the inner through hole to the top of the inner cover body is greater than the distance to the bottom of the outer cover body.

[0012] Preferably, the total area of ​​the outer through holes is greater than the total area of ​​the inner through holes.

[0013] Preferably, the pressure cooker is characterized in that it comprises a cover body and the above-mentioned anti-blocking cover, the cover body is provided with an exhaust pipe, the inner cover body and the outer cover body are fixedly connected, the top of the inner cover body has a connecting hole, the exhaust pipe is inserted in the connecting hole and communicates with the inner cavity of the inner cover body.

[0014] Preferably, a fastener screwed onto the exhaust pipe is provided below the cover body to fix the exhaust pipe to the cover body, the connection position between the top of the inner cover body and the exhaust pipe is below the fastener, and the inner cover body and the exhaust pipe are detachably connected.

[0015] The anti-overflow and anti-blocking cover and pressure cooker provided by the utility model have an inner through hole outlet facing the elastic pad. When steam passes through the inner through hole, it directly acts on the elastic pad, causing the elastic pad to deform and open the reflux hole. Condensed water formed in the anti-blocking cover can flow back into the pot body in time, playing an anti-overflow role and reducing the risk of overflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of a pressure cooker lid;

[0017] Figure 2 This is a schematic diagram of the explosion structure of the pressure cooker lid;

[0018] Figure 3 It is a schematic cross-sectional view of the local structure of the pot cover when the reflux hole is opened;

[0019] Figure 4 It is a schematic cross-sectional view of the local structure of the pot cover when the reflux hole is closed;

[0020] Figure 5 It is a schematic diagram of the overall structure of the anti-blocking cover;

[0021] Figure 6 This is a schematic diagram of the explosion-proof shield structure;

[0022] Explanation of the accompanying drawings: 100, pot cover; 110, cover body; 120, exhaust pipe; 130, anti-blocking cover; 131, outer cover body; 132, inner cover body; 133, outer chamber; 134, outer through hole; 135, step surface; 136, inner through hole; 137, reflux hole; 138, fixing hole; 139, connecting hole; 140, inner chamber; 150, elastic pad; 151, fixing part; 160, mounting hole; 170, fastener. DETAILED DESCRIPTION

[0023] The following will further describe the specific implementation of the utility model in combination with the accompanying drawings of the embodiments, so that the technical solution of the utility model is easier to understand and grasp. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0024] This embodiment provides a pressure cooker, which is a specific application of the innovative solution of the utility model on a pressure cooker. The anti-blocking cover of the innovative solution of the utility model can also be applied to cooking utensils such as rice cookers.

[0025] like Figure 1-6 As shown, the pressure cooker includes a pot body and a pot cover 100, the pot cover 100 includes a cover body 110 and an exhaust pipe 120 and an anti-blocking cover 130 arranged on the cover body 110, wherein the pot body is not shown, the anti-blocking cover 130 includes an outer cover body 131 and an inner cover body 132 arranged in the outer cover body 131, the inner cover body 132 is welded or clamped on the outer cover body 131, an outer chamber 133 is formed between the outer cover body 131 and the inner cover body 132, the side wall of the outer cover body 131 is provided with an outer through hole 134, the steam generated in the pot body passes through the outer through hole 134 to reach the outer chamber 133, and the outer through hole 134 can also play a role in breaking bubbles.

[0026] like Figure 3-6 As shown, the side wall of the inner cover 132 has a step surface 135, and the step surface 135 has an inner through hole 136. The air outlet of the inner through hole 136 faces the reflux hole 137 provided at the bottom of the anti-blocking cover 130. An elastic pad 150 is provided below the reflux hole 137 to open or close the reflux hole 137. The elastic pad 150 blocks the reflux hole 137 under the action of the air pressure in the pot body or under the action of its own elastic force, so as to prevent steam, bubbles and food residues from directly entering the inner chamber 140 of the inner cover 132. After entering the outer chamber 133, the steam passes downward through the inner through hole 136. The airflow passing through the inner through hole 136 acts on the elastic pad 150, causing the elastic pad 150 to deform. At this time, the reflux hole 137 is in an open state, so that the condensed water formed in the anti-blocking cover 130 can flow back to the pot body through the reflux hole 137, thereby achieving an overflow prevention effect. At the same time, the steam blocked by the elastic pad 150 changes direction again and enters the inner chamber 140 of the inner cover body 132, and then is discharged out of the pot body through the exhaust pipe 120 connected to the inner chamber 140 of the inner cover body 132, which plays a role in reducing the air pressure in the pot body. Due to the change in the direction of the airflow and the slow flow effect of the two chambers, the flow rate of the airflow is reduced, and the noise reduction effect is also achieved. The elastic pad 150 described in this embodiment is circular. In other optional embodiments, the elastic pad 150 can be petal-shaped. The elastic pad 150 includes a connecting portion and a sealing portion extending from the connecting portion to the surrounding area, and the sealing portion closes or opens the reflux hole 137.

[0027] The inner cover body 132 has a plurality of inner through holes 136 surrounding the axis of the anti-blocking cover 130, and all of the inner through holes 136 may face the return hole 137, or some of the inner through holes 136 may face the return hole 137. The inner through holes 136 in this embodiment pass through the horizontally arranged step surface 135 from top to bottom. In other optional embodiments, the step surface 135 may also be arranged inclined.

[0028] like Figure 2 , 6 As shown, a fixing hole 138 is further provided at the bottom of the anti-blocking cover 130 , and a fixing portion 151 is provided at the middle of the elastic pad 150 , and the fixing portion 151 is clamped and fixed to the fixing hole 138 .

[0029] According to the relationship between the lever arm and the moment, if the elastic pad 150 is to be deformed greatly under the action of a small force, that is, to generate a large moment, the lever arm needs to be large, that is, the projection of the inner through hole 136 on the elastic pad 150 needs to be as close as possible to the edge of the elastic pad 150. The projection of the inner through hole 136 on the elastic pad 150 to the edge of the elastic pad 150 is smaller than the distance to the center of the elastic pad 150, so that the elastic pad 150 can be deformed under the action of a small hot air flow and the reflow hole 137 can be opened.

[0030] like Figure 3 , 4 As shown, the inner through hole 136 is lower than the outer through hole 134, and the distance from the inner through hole 136 to the top of the inner cover 132 is greater than the distance to the bottom of the outer cover 131. The inner through hole 136 is closer to the elastic pad 150, and the airflow from the inner through hole 136 acts on the elastic pad 150 with greater force.

[0031] like Figure 5 As shown, the total area of ​​the outer through holes 134 is greater than the total area of ​​the inner through holes 136, and the air intake of the outer through holes 134 is greater than the air outlet of the inner through holes 136, so that the air pressure in the outer chamber 133 increases, thereby increasing the air pressure of the hot air flow flowing out of the inner through holes 136. The hot air flow flowing out of the inner through holes 136 impacts the elastic pad 150, which is conducive to the opening of the return hole 137.

[0032] The cover body 110 is provided with a mounting hole 160 , the lower end of the exhaust pipe 120 is threaded and inserted through the mounting hole 160 , and a fastener 170 screwed on the exhaust pipe 120 is provided below the cover body 110 , and the fastener 170 is a nut to fix the exhaust pipe 120 on the cover body 110 . The top of the inner cover 132 has a connection hole 139, and the exhaust pipe 120 passes through the mounting hole 160 and is inserted into the connection hole 139 and communicates with the inner chamber 140 of the inner cover 132. The connection position between the top of the inner cover 132 and the exhaust pipe 120 is below the fastener 170, which is convenient for the installation of the inner cover 132. The inner cover 132 is fixed to the exhaust pipe 120 by threaded fitting. After the anti-blocking cover 130 is removed, the exhaust pipe 120 is still fixed to the cover 110, and the anti-blocking cover 130 does not need to be held by hand to screw the exhaust pipe 120, which is easy to operate and convenient for cleaning after the anti-blocking cover 130 is removed. In other optional embodiments, the inner cover 132 can also be clamped on the exhaust pipe 120.

Claims

1. An anti-overflow and anti-blocking cover, comprising an outer cover body (131) and an inner cover body (132) arranged inside the outer cover body (131), wherein the side wall of the outer cover body (131) has an outer through hole (134), characterized in that: The side wall of the inner cover body (132) is provided with a step surface (135), the bottom of the anti-blocking cover (130) is provided with a return hole (137), an elastic pad (150) is provided below the return hole (137) to open or close the return hole (137), and the step surface (135) is provided with an inner through hole (136), and the air outlet of the inner through hole (136) faces the return hole (137).

2. The anti-overflow and anti-blocking cover according to claim 1, characterized in that: The elastic pad (150) is circular.

3. The anti-overflow and anti-blocking cover according to claim 1, characterized in that: The elastic pad (150) comprises a connecting portion, the connecting portion extending to a surrounding area to form a blocking portion, and the blocking portion closes or opens the reflow hole (137).

4. The anti-overflow and anti-blocking cover according to any one of claims 1 to 3, characterized in that: The middle portion of the elastic pad (150) has a fixing portion (151), and the fixing portion (151) is clamped and fixed to the bottom of the outer cover body (131).

5. The anti-overflow and anti-blocking cover according to claim 1, characterized in that: The projection of the inner through hole (136) on the elastic pad (150) has a smaller distance from the edge of the elastic pad (150) than from the center of the elastic pad (150).

6. The anti-overflow and anti-blocking cover according to claim 1, characterized in that: The inner through hole (136) is lower than the outer through hole (134).

7. The anti-overflow and anti-blocking cover according to claim 1, characterized in that: The distance from the inner through hole (136) to the top of the inner cover body (132) is greater than the distance to the bottom of the outer cover body (131).

8. The anti-overflow and anti-blocking cover according to claim 1, characterized in that: The total area of ​​the outer through holes (134) is greater than the total area of ​​the inner through holes (136).

9. A pressure cooker, characterized in that It comprises a cover body (110) and the anti-blocking cover (130) according to claim 1, the cover body (110) is provided with an exhaust pipe (120), the inner cover body (132) and the outer cover body (131) are fixedly connected, the top of the inner cover body (132) has a connecting hole (139), the exhaust pipe (120) is inserted into the connecting hole (139) and communicates with the inner chamber (140) of the inner cover body (132).

10. The pressure cooker according to claim 9, characterized in that A fastener (170) is provided below the cover body (110) and is screwed onto the exhaust pipe (120) so as to fix the exhaust pipe (120) onto the cover body (110); a connection position between the top of the inner cover body (132) and the exhaust pipe (120) is located below the fastener (170); and the inner cover body (132) and the exhaust pipe (120) are detachably connected.

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