Anti-overflow and fresh-keeping cooking appliance

Abstract

The present invention relates to an anti-overflow fresh-keeping cooking appliance, comprising an air pump component, a valve body component and a pot body, wherein an inner cavity for holding food is formed in the pot body, two air vents are arranged on the pot body, and the valve body component is used to control the on and off of the air vents. The air pump component has two working states: inflation and exhaust. When the air pump component is in the inflation state, the valve body component controls both of the air vents to be turned on, and the air outlet of the air pump component is connected to one of the air vents. When the air pump component is in the exhaust state, the valve body component controls one of the air vents to be turned on, and the other air vent is closed, and the air inlet of the air pump component is connected to the air vent in the on state. By utilizing the synergistic effect of the air pump component and the valve body, the anti-overflow fresh-keeping cooking appliance can achieve both the anti-overflow effect and the fresh-keeping function.

Description

Technical Field

[0001] The invention relates to the technical field of household electrical appliances, and in particular to an anti-overflow and fresh-keeping cooking appliance. Background Art

[0002] When using cooking appliances such as rice cookers and pressure cookers, you need to keep cooking at high power to make the food taste delicious. However, continuous high-power cooking will cause the food in the pot to overflow, making the cooking process unable to proceed normally. At this time, you can introduce outside air into the pot to prevent overflow. Sometimes you need to keep the food in the pot fresh so that the food tastes delicious. The preservation process requires keeping the vacuum environment in the pot as much as possible. Based on this, it is difficult to achieve both overflow prevention and preservation functions in cooking appliances. Summary of the invention

[0003] Based on this, it is necessary to provide an anti-overflow and fresh-keeping cooking appliance so that it has both anti-overflow and fresh-keeping functions.

[0004] An anti-overflow and fresh-keeping cooking appliance comprises an air pump assembly, a valve body assembly and a pot body, wherein an inner cavity for holding food is formed in the pot body, and two air vents are arranged on the upper part of the pot body, and the valve body assembly is used to control the on and off of the air vents. The air pump assembly has two working states, namely, inflation and exhaust. When the air pump assembly is in the inflation state, the valve body assembly controls both of the air vents to be turned on, and the air outlet of the air pump assembly is connected to one of the air vents. When the air pump assembly is in the exhaust state, the valve body assembly controls one of the air vents to be turned on and the other air vent is closed, and the air inlet of the air pump assembly is connected to the air vent in the on state.

[0005] The above scheme provides an anti-overflow and fresh-keeping cooking appliance, in which two air vents are arranged on the upper part of the pot body, and then the synergistic effect of the air pump assembly and the valve body assembly is utilized so that the anti-overflow and fresh-keeping cooking appliance can achieve both an anti-overflow effect and a fresh-keeping function. Specifically, when it is necessary to prevent overflow, the air pump assembly is in an inflated state, and the gas outside the inner cavity of the anti-overflow and fresh-keeping cooking appliance is introduced into the inner cavity from one of the air vents, and the gas in the inner cavity can be discharged from the other air vent. When it is necessary to preserve freshness, the air pump assembly is in an exhaust state, and the gas in the inner cavity is extracted from one of the air vents, while the other air vent is closed at this time, so that a vacuum environment is formed in the inner cavity, achieving a fresh-keeping effect.

[0006] In one embodiment, the air pumping assembly includes a two-way pump. When the two-way pump is in the inflation state, the air outlet of the two-way pump communicates with one of the air vents. When the two-way pump is in the air extraction state, the air inlet of the two-way pump communicates with the air vent in the conducting state.

[0007] In one embodiment, the valve body includes a first switching valve. The two air vents are respectively a first air port and a second air port. The two-way pump communicates with the first air port. The first switching valve is arranged in the second air port, so that the gas passing through the second air port can only flow from the inner side of the pot body to the outer side.

[0008] In one embodiment, the anti-overflow and fresh-keeping cooking appliance further includes an inflation pipe, an air extraction pipe and an intermediate connecting pipe. The two air vents are respectively a first air port and a second air port. The inflation pipe is connected between the two-way pump and the first air port. One end of the air extraction pipe communicates with the second air port, and a main switching valve is arranged at the other end of the air extraction pipe. The intermediate connecting pipe is connected between the two-way pump and the second air port. The valve body assembly includes an inflation switching valve and an air extraction switching valve. The inflation switching valve is arranged in the inflation pipe or the first air port, so that the gas passing through the first air port can only flow from the outer side of the pot body to the inner side. The air extraction switching valve is arranged in the intermediate connecting pipe, so that the gas in the intermediate connecting pipe can only flow towards the direction close to the two-way pump.

[0009] In one embodiment, one end of the intermediate connecting pipe communicates with the air extraction pipe, and the other end of the intermediate connecting pipe communicates with the inflation pipe. The inflation switching valve is located on the side of the inflation pipe far from the intermediate connecting pipe.

[0010] In one embodiment, the air pumping assembly includes an inflation air pump and an air extraction air pump. The two air vents are respectively a first air port and a second air port. The inflation air pump communicates with the first air port and is used for inflating the inner cavity. The air extraction air pump communicates with the second air port and is used for extracting the gas in the inner cavity. The valve body includes a second switching valve and a third switching valve. The second switching valve is arranged in the first air port, so that the gas passing through the first air port can only flow from the outer side of the pot body to the inner side. The third switching valve is arranged in the second air port, so that the gas passing through the second air port can only flow from the inner side of the pot body to the outer side.

[0011] In one embodiment, the anti-overflow fresh-keeping cooking appliance further includes a pressing plate and a sealing assembly. The pressing plate is disposed on the outer side surface of the pot body and is located at the ventilation port. A through hole communicating with the ventilation port is provided on the pressing plate. The air pumping assembly communicates with the ventilation port through the through hole. The sealing assembly is of a hollow structure and is disposed in the ventilation port. The top end of the sealing assembly extends out of the ventilation port and abuts against the pressing plate. The top end of the sealing assembly is distributed on the outer periphery of the through hole.

[0012] In one embodiment, the pot body includes an inner pot and a pot lid covering the inner pot. The pot lid includes an outer cover plate and a heat preservation cover plate disposed on the inner side of the outer cover plate. The outer edge of the heat preservation cover plate is connected to the outer cover plate. The middle part of the heat preservation cover plate protrudes inward and is spaced from the outer cover plate. The pressing plate is disposed on the outer side surface of the outer cover plate. The ventilation port includes a first through hole provided on the outer cover plate and a second through hole provided on the heat preservation cover plate. The sealing assembly includes a sealing member and a gas guiding cover. The sealing member is disposed in the first through hole. The sealing member is of a hollow structure. The top end of the sealing member extends out of the first through hole and abuts against the pressing plate. The bottom end of the sealing member communicates with the gas guiding cover. The bottom end of the gas guiding cover extends to abut against the heat preservation cover plate, and the gas guiding cover is distributed on the outer periphery of the second through hole.

[0013] In one embodiment, a sealing ring extending into the interior of the hollow structure is provided at the bottom end of the sealing member. The top end of the gas guiding cover is inserted into the sealing ring, and the sealing ring presses against the outer side surface of the gas guiding cover.

[0014] In one embodiment, the portion of the pressing plate opposite to the ventilation port bulges away from the outer side surface of the pot body, and a contact groove is formed on the side surface of the pressing plate facing the pot body. The outer periphery of the contact groove covers outside the ventilation port. The top end of the sealing assembly is provided with an outwardly turned contact flange, and the contact flange is pressed between the outer side surface of the pot body and the bottom wall of the contact groove. Description of the Drawings

[0015] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the descriptions thereof are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is a cross-sectional view of the anti-overflow and fresh-keeping cooking appliance described in this embodiment;

[0018] Figure 2 is a schematic structural diagram of the anti-overflow and fresh-keeping cooking appliance described in another embodiment;

[0019] Figure 3 is Figure 2 a cross-sectional view of the anti-overflow and fresh-keeping cooking appliance shown;

[0020] Figure 4 is a schematic structural diagram of the anti-overflow and fresh-keeping cooking appliance described in yet another embodiment;

[0021] Figure 5 is Figure 4 a cross-sectional view of the anti-overflow and fresh-keeping cooking appliance shown;

[0022] Figure 6 is Figure 5 a partial enlarged view of part A in

[0023] Explanation of reference numerals:

[0024] 10. Anti-overflow and fresh-keeping cooking appliance; 11. Pumping air assembly; 111. Two-way pump; 112. Inflating air pump; 113. Air extraction pump; 12A. First switching valve; 12B. Inflating switching valve; 12C. Air extraction switching valve; 12D. Second switching valve; 12E. Third switching valve; 12F. Vacuum check valve; 13. Pot body; 131. Venting port; 1311. First air port; 1312. Second air port; 132. Outer cover plate; 133. Heat preservation cover plate; 134. Pot cover; 135. Inner container; 14. Inflating pipe; 15. Air extraction pipe; 151. Main switching valve; 16. Intermediate connecting pipe; 17. Pressure plate; 171. Through hole; 172. Contact groove; 18. Sealing assembly; 181. Sealing member; 1811. Sealing ring; 182. Air guiding cover; 183. Contact flanging; 19. Inner cavity. Detailed implementation manners

[0025] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0031] like Figures 1 to 5 As shown, in one embodiment, an anti-overflow fresh-keeping cooking appliance 10 is provided, comprising a pump assembly 11, a valve body assembly and a pot body 13. An inner cavity 19 for holding food is formed in the pot body 13. Two vents 131 are provided at the upper part of the pot body 13, and the valve body assembly is used to control the on and off of the vents 131. The pump assembly 11 has two working states of inflation and exhaust. When the pump assembly 11 is in the inflation state, the valve body assembly controls both of the vents 131 to be turned on, and the air outlet of the pump assembly 11 is connected to one of the vents 131; when the pump assembly 11 is in the exhaust state, the valve body assembly controls one of the vents 131 to be turned on, and the other vent 131 is closed, and the air inlet of the pump assembly 11 is connected to the vent 131 in the on state.

[0032] Specifically, the pot body 13 includes an inner pot 135 and a pot cover 134 covering the inner pot 135, thereby forming an inner cavity 19 for holding food. The food is heated and cooked in the inner cavity 19. When the pumping component 11 is in the inflating state, the gas outside the inner cavity 19 is introduced into the inner cavity 19. When the pumping component 11 is in the exhausting state, the gas in the inner cavity 19 is exhausted. The vent 131 can be as follows: Figures 1 to 4 As shown, the vent 131 is located on the pot cover 134, or the vent 131 is located on the inner pot 135 near the pot cover 134. When the vent 131 is located on the inner pot 135, it is necessary to ensure that the vent 131 will not be submerged by food during the cooking process so as to achieve the air extraction and inflation process.

[0033] The anti-overflow and fresh-keeping cooking appliance 10 provided by the above solution has two ventilation openings 131 provided on the pot body 13, and then, by the cooperative action of the air pumping assembly 11 and the valve body assembly, the anti-overflow and fresh-keeping cooking appliance 10 can not only achieve the effect of preventing overflow but also has a fresh-keeping function. Specifically, when anti-overflow is required, the air pumping assembly 11 is in an inflation state, and the gas outside the inner cavity 19 of the anti-overflow and fresh-keeping cooking appliance 10 is introduced into the inner cavity 19 from one of the ventilation openings 131, and at the same time, the gas in the inner cavity 19 can be discharged from the other ventilation opening 131. When fresh-keeping is required, the air pumping assembly 11 is in an air extraction state, and the gas in the inner cavity 19 is extracted from one of the ventilation openings 131, and at this time, the other ventilation opening 131 is closed, so that a vacuum environment is formed in the inner cavity 19, achieving the fresh-keeping effect.

[0034] Moreover, during the cooking process, when the cooking reaches a high-temperature environment, the temperature of the gas in the inner cavity 19 is relatively high, and the gas is extruded outwards. After the cooking is completed, if the air pumping assembly 11 is in a closed state, the gas cannot pass through the air pumping assembly 11, and the ventilation opening 131 is closed by the valve body assembly, then as the temperature in the inner cavity 19 decreases, a negative pressure environment is gradually formed in the inner cavity 19, which can also play a certain fresh-keeping role.

[0035] Specifically, the air pumping assembly 11 may include a two-way pump 111 to realize the switching between the two working states of air extraction and inflation. Or the air pumping assembly 11 includes two air pumps, and the two air pumps are respectively arranged corresponding to the two ventilation openings 131. When inflation is required, one of the air pumps is used to pump gas into the inner cavity 19 through one of the ventilation openings 131; when air extraction is required, the other air pump is used to extract the gas in the inner cavity 19 through the other ventilation opening 131 to form a vacuum environment.

[0036] Specifically, as Figures 1 to 3 shown, in one embodiment, the air pumping assembly 11 includes a two-way pump 111. When the two-way pump 111 is in an inflation state, the air outlet of the two-way pump 111 is communicated with one of the ventilation openings 131, and the other ventilation opening 131 is in a conducting state to discharge the gas in the inner cavity 19, achieving the effect of preventing overflow.

[0037] When the two-way pump 111 is in an air extraction state, the valve body assembly will conduct one of the ventilation openings 131 and close the other ventilation opening 131. The air inlet of the two-way pump 111 is communicated with the conducting ventilation opening 131 to extract the gas in the inner cavity 19 to form a vacuum environment and achieve the fresh-keeping effect.

[0038] It should be noted that the air outlet of the two-way pump 111 during inflation and the air inlet during air extraction are the same air port of the two-way pump 111, but the state of this air port is different when the two-way pump 111 is in different states. The other air port of the two-way pump 111 is communicated with the outside.

[0039] During the process of using the two-way pump 111 to realize the switching between the two working states of inflation and air extraction, the ventilation ports 131 connected by the two-way pump 111 during the inflation state and the air extraction state can be the same or different.

[0040] For example, as Figure 1 shown, in one embodiment, the valve body assembly includes a first switching valve 12A. The two ventilation ports 131 are respectively a first air port 1311 and a second air port 1312. The two-way pump 111 is communicated with the first air port 1311. The first switching valve 12A is arranged in the second air port 1312, so that the gas passing through the second air port 1312 can only flow from the inside of the pot body 13 to the outside.

[0041] Whether during inflation or air extraction, the two-way pump 111 is communicated with the first air port 1311. In other words, the ventilation port 131 connected by the two-way pump 111 during the inflation state and the air extraction state is the same. In this case, when the two-way pump 111 is in the inflation state, the first switching valve 12A is opened, so that the second air port 1312 is conducted. While the two-way pump 111 pumps gas into the inner cavity 19, the gas in the inner cavity 19 is discharged through the second air port 1312. When the two-way pump 111 is in the air extraction state, the first switching valve 12A is closed, closing the second air port 1312. The gas in the inner cavity 19 is extracted by the two-way pump 111 from the first air port 1311, and the outside gas cannot enter through the second air port 1312, so that a vacuum environment is formed in the inner cavity 19.

[0042] Specifically, the first switching valve 12A can be a one-way valve, and the setting direction of the one-way valve can meet the requirement that the gas passing through the second air port 1312 can only flow from the inside of the pot body 13 to the outside. Or the first switching valve 12A can be other valve bodies, as long as it can control the on-off of the second air port 1312 to meet the on-off requirements of the second air port 1312 during the above inflation and air extraction.

[0043] Optionally, in another embodiment, as Figure 2 and Figure 3As shown, the anti-overflow and fresh-keeping cooking appliance 10 further includes an inflation tube 14, an extraction tube 15, and an intermediate connection tube 16. The two vent openings 131 are respectively a first air port 1311 and a second air port 1312. The inflation tube 14 is connected between the two-way pump 111 and the first air port 1311. One end of the extraction tube 15 is connected to the second air port 1312, and a main switch valve 151 is provided at the other end of the extraction tube 15. The intermediate connection tube 16 is connected between the two-way pump 111 and the second air port 1312. The valve body assembly includes an inflation switch valve 12B and an extraction switch valve 12C. The inflation switch valve 12B is arranged in the inflation tube 14 or the first air port 1311, so that the gas passing through the first air port 1311 can only flow from the outside to the inside of the pot body 13; the extraction switch valve 12C is arranged in the intermediate connection tube 16, so that the gas in the intermediate connection tube 16 can only flow in the direction close to the two-way pump 111.

[0044] When the two-way pump 111 is in the inflation state, the gas pumped out by the air outlet of the two-way pump 111 cannot pass through the intermediate connection tube 16, and can only enter the inner cavity 19 from the inflation tube 14 and the first air port 1311. At this time, the main switch valve 151 on the extraction tube 15 is opened, so that the extraction tube 15 is conducted, and the gas in the inner cavity 19 is discharged from the second air port 1312, achieving the effect of preventing overflow. When the two-way pump 111 is in the extraction state, the inflation tube 14 or the first air port 1311 is blocked by the inflation switch valve 12B. At this time, the extraction switch valve 12C is opened, and the intermediate connection tube 16 is conducted. Thus, the two-way pump 111 extracts the gas in the inner cavity 19 successively through the second air port 1312 and the intermediate connection tube 16, so that a vacuum environment is formed in the inner cavity 19. When the two-way pump 111 is in the extraction state, the main switch valve 151 is closed, the extraction tube 15 is blocked, and the outside gas cannot enter the inner cavity 19 through the extraction tube 15.

[0045] Specifically, the main switch valve 151 can be a solenoid valve. The inflation switch valve 12B and the extraction switch valve 12C can be one-way valves.

[0046] Further, a one-way valve can be further provided in the second air port 1312, and this one-way valve is defined as a vacuum one-way valve 12F, so that the gas passing through the second air port 1312 can only flow outwards from the inner cavity 19. Thus, when the pump gas assembly 11 is not started and the main switch valve 151 is opened and the extraction tube 15 is conducted. During the cooling process after high-temperature cooking, the air pressure in the inner cavity 19 drops, the vacuum one-way valve 12F blocks the second air port 1312, and as the temperature in the inner cavity 19 further decreases, a vacuum environment will gradually be formed.

[0047] On the other hand, the vacuum environment formed by relying on the air pumping assembly 11 can also be achieved without heating and cooking, that is, directly adjust the air pumping assembly 11 to the air extraction state, and directly extract the inner cavity 19 into a vacuum.

[0048] Further specifically, in one embodiment, as Figure 2 and Figure 3 shown, one end of the intermediate connecting pipe 16 is communicated with the air extraction pipe 15, the other end of the intermediate connecting pipe 16 is communicated with the air charging pipe 14, and the air charging switch valve 12B is located on the side of the air charging pipe 14 far from the intermediate connecting pipe 16. The intermediate connecting pipe 16 is indirectly communicated with the two-way pump 111 and the second air port 1312 through being communicated with the air extraction pipe 15 and the air charging pipe 14.

[0049] Optionally, the intermediate connecting pipe 16 can also be directly communicated with the two-way pump 111 and the second air port 1312. However, when adopting the above direct communication method, it is necessary to make the air extraction pipe 15 be able to be communicated with the second air port 1312, and the air charging pipe 14 be able to be communicated with the two-way pump 111. For example, a first three-way valve can be added to the second air port 1312, and the three valve ports of the first three-way valve are respectively communicated with the second air port 1312, the air extraction pipe 15 and the intermediate connecting pipe 16. So that the second air port 1312 can be directly communicated with the air extraction pipe 15 and can also be communicated with the intermediate connecting pipe 16. A second three-way valve is added to the two-way pump 111, and the three valve ports of the second three-way valve are respectively communicated with the two-way pump 111, the intermediate connecting pipe 16 and the air charging pipe 14.

[0050] Furthermore, in another embodiment, as Figure 4 and Figure 5 shown, the air pumping assembly 11 includes an air charging pump 112 and an air extraction pump 113. The two air vents 131 are respectively a first air port 1311 and a second air port 1312. The air charging pump 112 is communicated with the first air port 1311 for charging air into the inner cavity 19, and the air extraction pump 113 is communicated with the second air port 1312 for extracting the gas in the inner cavity 19. The valve body includes a second switch valve 12D and a third switch valve 12E. The second switch valve 12D is arranged in the first air port 1311 so that the gas passing through the first air port 1311 can only flow from the outside of the pot body 13 to the inside; the third switch valve 12E is arranged in the second air port 1312 so that the gas passing through the second air port 1312 can only flow from the inside of the pot body 13 to the outside.

[0051] When anti-overflow is required, both the inflating air pump 112 and the air-extracting air pump 113 are turned on, and gas is pumped into the inner cavity 19 through the first air port 1311, and the gas in the inner cavity 19 is extracted through the second air port 1312.

[0052] If it is necessary to maintain a vacuum in the inner cavity 19 after heating and cooking, the inflating air pump 112 can be directly turned off so that the first air port 1311 is blocked and cannot conduct air; the air outlet of the air-extracting air pump 113 is opened, the air-extracting air pump 113 does not operate, and the gas in the second air port 1312 can be discharged through the air-extracting air pump 113. During the subsequent process of the temperature in the inner cavity 19 decreasing, the third switching valve 12E is closed, and as the temperature in the inner cavity 19 gradually decreases, a negative pressure vacuum is formed in the inner cavity 19.

[0053] If there is no heating and cooking and it is necessary to directly evacuate the inner cavity 19 to a vacuum, the inflating air pump 112 is turned off and the air-extracting air pump 113 is turned on to extract the gas in the inner cavity 19 to form a vacuum environment.

[0054] Specifically, both the second switching valve 12D and the third switching valve 12E can be one-way valves.

[0055] Further, as Figure 6 shown, in one embodiment, the anti-overflow and freshness-preserving cooking appliance 10 further includes a pressing plate 17 and a sealing assembly 18. The pressing plate 17 is disposed on the outer side surface of the pot body 13 and is located at the air vent 131. Specifically, the pressing plate 17 can be fixed to the pot body 13 by screws or in a glued manner. Specifically, when the air vent 131 is located on the pot cover 134, the pressing plate is disposed on the outer side surface of the pot cover 134. The pressing plate 17 is provided with a through hole 171 communicating with the air vent 131, and the air pumping assembly 11 communicates with the air vent 131 through the through hole 171. The sealing assembly 18 is of a hollow structure, the sealing assembly 18 is disposed in the air vent 131, the top end of the sealing assembly 18 extends out of the air vent 131 and abuts against the pressing plate 17, and the top end of the sealing assembly 18 is distributed on the outer periphery of the through hole 171.

[0056] The sealing assembly 18 seals between the pressing plate 17 and the pot body 13 to prevent gas leakage. And the pressing plate 17 facilitates direct communication with the air pumping assembly 11, thereby indirectly realizing the communication between the air pumping assembly 11 and the air vent 131. In particular, when it is necessary to form a negative pressure vacuum environment in the inner cavity 19, the requirement for airtightness is relatively high, and the sealing assembly 18 can ensure a high airtightness between the pressing plate 17 and the pot body 13.

[0057] More specifically, the inflatable switching valve 12B, the second switching valve 12D, and the third switching valve 12E can all be disposed in the sealing assembly 18.

[0058] More specifically, as Figure 6 shown, in one embodiment, the pot body 13 includes an inner pot 135 and a pot lid 134 covering the inner pot 135. The pot lid 134 includes an outer cover plate 132 and a heat-insulating cover plate 133 disposed inside the outer cover plate 132. The outer edge of the heat-insulating cover plate 133 is connected to the outer cover plate 132, and the middle part of the heat-insulating cover plate 133 protrudes inward and is spaced from the outer cover plate 132. The pot lid 134 is composed of the outer cover plate 132 and the heat-insulating cover plate 133 with a space in the middle, so that the heat-insulating cover plate 133 can have a relatively high heat-insulating effect on the gas in the inner cavity 19. The pressing plate 17 is disposed on the outer side surface of the outer cover plate 132.

[0059] When the pot lid 134 includes the outer cover plate 132 and the heat-insulating cover plate 133, the air vent 131 includes a first through hole disposed on the outer cover plate 132 and a second through hole disposed on the heat-insulating cover plate 133. At this time, the sealing assembly 18 includes a sealing member 181 and a gas guide cover 182. The sealing member 181 is disposed in the first through hole. The sealing member 181 is of a hollow structure. The top end of the sealing member 181 extends out of the first through hole and abuts against the pressing plate 17, so that a sealed state is formed between the pressing plate 17 and the outer cover plate 132 to prevent gas leakage. The bottom end of the sealing member 181 is communicated with the gas guide cover 182. The bottom end of the gas guide cover 182 extends to abut against the heat-insulating cover plate 133, and the gas guide cover 182 is distributed around the second through hole. Furthermore, the second through hole and the first through hole are connected by the sealing member 181 and the gas guide cover 182, and the sealing performance is relatively high, and no air leakage will occur.

[0060] And as Figures 1 to 5 shown, the inflatable switching valve 12B, the second switching valve 12D, and the third switching valve 12E can all be disposed in the gas guide cover 182.

[0061] Furthermore, as Figure 6 shown, in one embodiment, a sealing ring 1811 extending into the interior of the hollow structure is provided at the bottom end of the sealing member 181. The top end of the gas guide cover 182 is inserted into the sealing ring 1811, and the sealing ring 1811 presses against the outer side surface of the gas guide cover 182. So that a sealed connection is formed between the gas guide cover 182 and the sealing member 181, and no air leakage will occur.

[0062] Furthermore, in one embodiment, as Figure 6As shown, the portion of the pressing plate 17 opposite to the vent 131 bulges away from the outer side of the pot body 13, and a resisting groove 172 is formed on the side of the pressing plate 17 facing the pot body 13. The outer periphery of the resisting groove 172 covers the outside of the vent 131, and the top of the sealing assembly 18 is provided with a resisting flange 183 turned outward, and the resisting flange 183 is pressed between the outer side of the pot body 13 and the bottom wall of the resisting groove 172, so as to seal the pressing plate 17 and the outer cover plate 132.

[0063] After the sealing assembly 18 is installed in the vent 131, the pressing plate 17 is arranged on the pot body 13, and the pressing plate 17 presses the abutting flange 183 while being fastened to the pot body 13. Specifically, when the sealing assembly 18 includes the sealing member 181 and the air guide cover 182, the abutting flange 183 is arranged at the top end of the sealing member 181.

[0064] The above-mentioned interference flange 183 is turned outward to extend toward the outer periphery of the sealing assembly 18, so that the interference flange 183 can be pressed between the outer side surface of the pot body 13 and the bottom wall of the interference groove 172. When the pot body 13 includes the outer cover plate 132, the interference flange 183 is pressed between the outer side surface of the outer cover plate 132 and the bottom wall of the interference groove 172. Specifically, when the vent 131 is located on the pot cover 134, the pressing plate 17 bulges away from the outer side surface of the pot cover 134. The interference flange 183 is pressed between the outer side surface of the pot cover 134 and the bottom wall of the interference groove 172, and the pressure plate 17 and the outer cover plate 132 are sealed.

[0065] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0066] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An anti-overflow and fresh-keeping cooking appliance. It is characterized in that The invention comprises an air pump assembly, a valve body assembly, a pot body, an air filling pipe, an air extraction pipe and an intermediate connecting pipe, wherein an inner cavity for holding food is formed in the pot body, and two air vents are arranged on the upper part of the pot body, and the valve body assembly is used to control the opening and closing of the air vents. The air pump assembly has two working states, namely, inflation and extraction. When the air pump assembly is in the inflation state, the valve body assembly controls both the air vents to be turned on, and the air outlet of the air pump assembly is connected to one of the air vents. When the air pump assembly is in the extraction state, the valve body assembly controls one of the air vents to be turned on and the other air vent is closed, and the air inlet of the air pump assembly is connected to the air vent in the turned-on state. The air pump assembly comprises a two-way pump, and when the two-way pump is in the inflation state, the air outlet of the two-way pump is connected to one of the air vents. One of the air vents is connected, and when the two-way pump is in a vacuum state, the air inlet of the two-way pump is connected to the air vent in a conducting state; the two air vents are respectively a first air port and a second air port, the air charging pipe is connected between the two-way pump and the first air port, one end of the air suction pipe is connected to the second air port, and a main switch valve is provided at the other end of the air suction pipe, the intermediate connecting pipe is connected between the two-way pump and the second air port, the valve body assembly includes an air charging switch valve and an air suction switch valve, the air charging switch valve is arranged in the air charging pipe or the first air port, so that the gas passing through the first air port can only flow from the outside to the inside of the pot body, and the air suction switch valve is arranged in the intermediate connecting pipe, so that the gas in the intermediate connecting pipe can only flow in the direction close to the two-way pump.

2. The anti-overflow fresh-keeping cooking appliance according to claim 1, It is characterized in that One end of the intermediate connecting pipe is connected to the air extraction pipe, and the other end of the intermediate connecting pipe is connected to the inflation pipe. The inflation switch valve is located on a side of the inflation pipe away from the intermediate connecting pipe.

3. The anti-overflow fresh-keeping cooking appliance according to any one of claims 1 to 2, It is characterized in that It also includes a pressure plate and a sealing assembly, wherein the pressure plate is arranged on the outer side of the pot body and is located at the vent, the pressure plate is provided with a through hole connected to the vent, the air pump assembly is connected to the vent through the through hole, the sealing assembly is a hollow structure, the sealing assembly is arranged in the vent, the top end of the sealing assembly extends out of the vent and contacts the pressure plate, and the top end of the sealing assembly is distributed around the through hole.

4. The anti-overflow fresh-keeping cooking appliance according to claim 3, It is characterized in that The pot body includes an inner pot and a pot cover covering the inner pot, the pot cover includes an outer cover plate and a heat-insulating cover plate arranged on the inner side of the outer cover plate, the outer edge of the heat-insulating cover plate is connected to the outer cover plate, the middle part of the heat-insulating cover plate protrudes inward and is spaced from the outer cover plate, the pressing plate is arranged on the outer side surface of the outer cover plate, the vent includes a first through hole arranged on the outer cover plate and a second through hole arranged on the heat-insulating cover plate, the sealing assembly includes a sealing member and an air guide cover, the sealing member is arranged in the first through hole, the sealing member is a hollow structure, the top end of the sealing member extends out of the first through hole and contacts the pressing plate, the bottom end of the sealing member is connected to the air guide cover, the bottom end of the air guide cover extends to contact the heat-insulating cover plate, and the air guide cover is distributed on the periphery of the second through hole.

5. The anti-overflow fresh-keeping cooking appliance according to claim 4, It is characterized in that A sealing ring extending toward the inside of the hollow structure is disposed at the bottom end of the sealing member, the top end of the air guide cover is inserted into the sealing ring, and the sealing ring is pressed tightly against the outer side surface of the air guide cover.

6. The anti-overflow fresh-keeping cooking appliance according to claim 3, It is characterized in that The portion of the pressure plate opposite to the vent bulges in the direction away from the outer side surface of the pot body, and a resistance groove is formed on the side of the pressure plate facing the pot body, the outer periphery of the resistance groove covers the outside of the vent, and the top of the sealing assembly is provided with an outward-turned resistance flange, which is pressed between the outer side surface of the pot body and the bottom wall of the resistance groove.

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