Cooking equipment and exhaust adjusting method

Abstract

The invention relates to cooking equipment and an exhaust adjusting method, and the cooking equipment comprises an inner container which is internally provided with a cooking cavity and an exhaust port; the mounting seat is fixedly arranged in the inner container; the heat dissipation fan is located above the inner container and provided with an air outlet; the air duct is provided with a heat dissipation channel, and the heat dissipation channel communicates with the air outlet and is located in the direction of the air outlet; the cooking cavity, the exhaust port and the heat dissipation channel are sequentially communicated from bottom to top; a mounting through hole is formed in the top wall of the air duct, and the mounting through hole, the exhaust port and the mounting seat are sequentially arranged from top to bottom; the diaphragm comprises a first connecting part and a second connecting part which surrounds the first connecting part, is fixedly connected to the top wall of the air duct and seals the mounting through hole together with the first connecting part; the connecting piece is fixedly connected to the first connecting part and penetrates through the exhaust port, and a gap is formed between the connecting piece and the exhaust port; the plugging piece is fixedly connected to the connecting piece; and the elastic piece is clamped between the plugging piece and the mounting seat. The cooking equipment is beneficial to energy conservation.

Description

Technical Field

[0001] The present application relates to the technical field of cooking equipment, and in particular to cooking equipment and an exhaust gas regulating method. Background Art

[0002] In the steaming mode, the steam oven heats water to generate high-temperature steam to steam food. In the baking mode, the food is baked by heat radiation or air heating. During the baking process, the moisture in the food will evaporate to form steam. Therefore, whether in the steaming or baking function, steam will be generated in the inner pot of the steam oven. In order to exhaust the steam, the inner pot of the steam oven is provided with an exhaust port, and the steam generated in the inner pot during the cooking process is discharged from the exhaust port.

[0003] However, in conventional technology, the exhaust port on the above cooking device is always completely open, and a large amount of heat in the inner pot will be lost through the exhaust port, which is not conducive to energy saving. Summary of the invention

[0004] Based on this, it is necessary to provide a cooking device to address the above problems.

[0005] In order to solve the above problems, the present application provides the following technical solutions:

[0006] A cooking device, comprising:

[0007] An inner pot, wherein a cooking cavity is provided in the inner pot, and an exhaust port is provided on the inner pot;

[0008] A mounting seat, fixedly mounted on the inner tank;

[0009] A heat dissipation fan, located above the inner tank, and having an air outlet;

[0010] An air duct is located above the inner pot, the inner side of the air duct surrounds a heat dissipation channel, the heat dissipation channel is connected with the air outlet and is located in the direction of the air outlet; the cooking cavity, the exhaust port and the heat dissipation channel are connected in sequence from bottom to top; a mounting through hole is provided on the top wall of the air duct, and the mounting through hole, the exhaust port and the mounting seat are arranged in sequence from top to bottom;

[0011] The diaphragm comprises a first connecting portion and a second connecting portion, wherein the second connecting portion is arranged around the first connecting portion and is fixedly connected to the top wall of the air duct, and the second connecting portion and the first connecting portion jointly seal the mounting through hole;

[0012] A connecting member, fixedly connected to the first connecting portion, wherein the connecting member passes through the exhaust port and has a gap between the connecting member and the exhaust port;

[0013] a blocking member, fixedly connected to the connecting member, for blocking the exhaust port; and

[0014] An elastic member is sandwiched between the blocking member and the mounting seat, wherein the blocking member, the elastic member and the mounting seat are arranged in sequence from top to bottom;

[0015] The first connection portion gradually moves downward under the effect of the negative pressure in the heat dissipation channel during the process in which the working power of the heat dissipation fan gradually increases, so that the blocking member gradually moves away from the exhaust port.

[0016] The cooking device has at least the following beneficial effects:

[0017] When the heat dissipation fan is working, a high-speed airflow is generated in the heat dissipation channel, and the pressure in the heat dissipation channel is less than the atmospheric pressure. In other words, negative pressure appears in the heat dissipation channel. The top side of the first connection part is affected by the atmospheric pressure, and the bottom side of the first connection part is affected by the negative pressure in the heat dissipation channel, so suction appears on the bottom side of the first connection part. In the process of gradually increasing the working power of the heat dissipation fan, the air pressure in the heat dissipation channel gradually decreases, the suction force on the bottom side of the first connection part gradually increases, and the first connection part, the connecting member and the blocking member gradually move downward, so that the blocking member gradually moves away from the exhaust port. In other words, the space between the blocking member and the exhaust port gradually increases. In this process, the elastic member is gradually compressed. In the process of gradually decreasing the working power of the heat dissipation fan, the air pressure in the heat dissipation channel gradually increases, the suction force on the bottom side of the first connection part gradually decreases, the elastic member gradually rebounds, the blocking member, the connecting member and the first connection part gradually move upward, and the blocking member gradually approaches the exhaust port. In other words, the space between the blocking member and the exhaust port gradually decreases. In short, the cooking device can adjust the size of the space between the blocking member and the exhaust port by adjusting the speed of the heat dissipation fan. When it is necessary to discharge water vapor quickly, the space between the sealing piece and the exhaust port can be increased to increase the speed of water vapor discharge; when it is not necessary to discharge water vapor quickly, the space between the sealing piece and the exhaust port can be reduced, thereby reducing the speed of heat loss in the inner tank, which is beneficial to saving energy.

[0018] In one of the embodiments, when the cooling fan is not working, the blocking member blocks the exhaust port and the compression amount of the elastic member is △x; the elastic coefficient of the elastic member is k, the weight of the blocking member is G1, the weight of the connecting member is G2, and △x, k, G1 and G2 satisfy: 0≤k*△x-(G1+G2)≤0.01N.

[0019] With such arrangement, when the heat dissipation fan is not working, the force exerted by the elastic member on the blocking member is very small, which is conducive to the blocking member moving downward after the heat dissipation fan is working.

[0020] In one of the embodiments, when the heat dissipation fan is not working, the diaphragm arches upward.

[0021] Such an arrangement leaves a larger space for the first connecting part to move downward, which is beneficial to increasing the stroke of the blocking member and the maximum distance between the blocking member and the exhaust port, thereby increasing the adjustable range of the space size between the blocking member and the exhaust port.

[0022] In one embodiment, the air duct is a Venturi structure, and the air duct includes a contraction section, a throat section and an expansion section, and the contraction section, the throat section and the expansion section are sequentially arranged along the direction of the air outlet, and the inner side of the contraction section, the inner side of the throat section and the inner side of the expansion section jointly enclose the heat dissipation channel, wherein:

[0023] The first connection portion is located at the throat section; or,

[0024] The first connecting portion is located on the contraction section close to the throat section; or,

[0025] A portion of the first connecting portion is located at the throat section, and another portion is located at a portion of the contraction section close to the throat section.

[0026] Such an arrangement can increase the suction force on the bottom side of the first connecting portion, which is beneficial for moving the first connecting portion downward.

[0027] In one embodiment, the air outlet is located in the contraction section.

[0028] Such an arrangement can ensure that all the wind blown out of the air outlet enters the heat dissipation channel, which is beneficial to reducing the air pressure in the heat dissipation channel, increasing the suction force on the bottom side of the first connecting part, and moving the first connecting part downward.

[0029] In one embodiment, the exhaust port is a circular hole, and the diameter of the exhaust port is D0; the blocking member is a truncated cone, the upper base diameter of the blocking member is D1, and the lower base diameter of the blocking member is D2, and D0, D1 and D2 satisfy: D1<D0≤D2.

[0030] With such arrangement, the blocking piece can be extended into the exhaust port. During the process of the blocking piece entering and exiting the exhaust port, the distance between the blocking piece and the exhaust port along the radial direction of the exhaust port changes gradually and continuously, thereby realizing stepless adjustment of the space size between the blocking piece and the exhaust port.

[0031] In one embodiment, a guide hole is provided on one of the mounting seat and the blocking member, and a guide member adapted to the guide hole is fixedly provided on the other, the guide hole and the guide member are both arranged along the vertical direction, and the guide member is at least partially located in the guide hole.

[0032] With such arrangement, through the cooperation between the guide member and the guide hole, the blocking member can maintain the stability and accuracy of its moving path, and the reliability of the working of the blocking member can be improved.

[0033] In one embodiment, the elastic member is sleeved on the guide member.

[0034] With such arrangement, the elastic member can maintain the stability and accuracy of its telescopic path through the guidance of the guide member, avoid deviation under stress, and improve the reliability of the elastic member.

[0035] In one embodiment, the inner pot includes an inner pot body and an extension part, the extension part is sealed and connected to the outer top wall of the inner pot body, the inner side of the inner pot body surrounds the cooking cavity, an exhaust channel is provided in the extension part, the part of the exhaust channel away from the inner pot body forms the exhaust port, and the part of the exhaust channel close to the inner pot body forms a accommodating cavity, the heat dissipation channel, the exhaust port, the accommodating cavity, and the cooking cavity are connected in sequence from top to bottom, and the sealing part is located in the accommodating cavity.

[0036] With such a configuration, the blocking member can move up and down in the accommodating cavity to change the size of the space between it and the exhaust port without entering the cooking cavity. In other words, the blocking member does not occupy space in the cooking cavity during operation, which is conducive to placing more food in the cooking cavity.

[0037] The present application also provides an exhaust gas adjustment method, which is applied to the above-mentioned cooking device, wherein the cooking device is a steam oven, and the exhaust gas adjustment method comprises:

[0038] When the cooking device performs a steaming function, the heat dissipation fan is turned off when the relative humidity in the cooking cavity is less than 80%, so as to minimize the space between the blocking member and the exhaust port; and

[0039] When the cooking device performs a grilling function, the heat dissipation fan is closed when the cooking device is in a heat preservation and cooking stage of grilling food, so as to minimize the space between the blocking member and the exhaust port.

[0040] The exhaust gas regulation method has at least the following beneficial effects:

[0041] When the cooking device performs the steaming function and the relative humidity in the cooking cavity is less than 80%, the exhaust adjustment method turns off the heat dissipation fan to minimize the space between the blocking member and the exhaust port, thereby minimizing the speed at which the high-temperature steam in the cooking device diffuses to the outside, which is conducive to accumulating a large amount of high-temperature steam in the cooking cavity as soon as possible when the cooking device performs the steaming function, thereby improving the efficiency of the cooking device in steaming food. When the cooking device performs the baking function and the cooking device is in the heat preservation and maturation stage of baking food, the exhaust adjustment method turns off the heat dissipation fan to minimize the space between the blocking member and the exhaust port, thereby minimizing the speed at which the hot gas in the cooking cavity diffuses to the outside, which is conducive to keeping the temperature in the cooking cavity near the set temperature during the heat preservation and maturation stage of baking food, and only fluctuating within a small temperature range, which is conducive to maintaining the stability of the baking environment during the heat preservation and maturation stage, thereby ensuring the baking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a three-dimensional schematic diagram of a partial structure of a cooking device according to an embodiment of the present application;

[0043] Figure 2 for Figure 1 A three-dimensional schematic diagram of the structure shown in another viewing angle;

[0044] Figure 3 for Figure 1 A three-dimensional schematic diagram of the structure shown with the air duct removed;

[0045] Figure 4 for Figure 1 A three-dimensional schematic diagram of the structure shown in another viewing angle;

[0046] Figure 5 for Figure 1 a front view of the structure shown;

[0047] Figure 6 for Figure 5 AA sectional view of the structure shown;

[0048] Figure 7 for Figure 6 A magnified schematic diagram of point B in the middle.

[0049] Reference numerals:

[0050] 1. Inner pot; 11. Inner pot body; 111. Cooking cavity; 12. Extension piece; 121. Exhaust passage; 1211. Exhaust port; 1212. Accommodation cavity; 2. Mounting seat; 21. Guide hole; 3. Cooling fan; 31. Air outlet; 4. Air duct; 41. Cooling passage; 42. Mounting through hole; 43. Contraction section; 44. Throat section; 45. Expansion section; 5. Diaphragm; 51. First connecting part; 52. Second connecting part; 6. Connecting piece; 7. Sealing piece; 8. Elastic piece; 9. Guide piece. DETAILED DESCRIPTION

[0051] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] 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.

[0057] See also Figures 1 to 7The present application first provides a cooking device, which includes an inner pot 1, a mounting seat 2, a heat dissipation fan 3, an air duct 4, a diaphragm 5, a connecting member 6, a blocking member 7 and an elastic member 8. A cooking cavity 111 is provided in the inner pot 1, and an exhaust port 1211 is provided on the inner pot 1. Food is placed in the cooking cavity 111 for cooking, and water vapor in the cooking cavity 111 is discharged through the exhaust port 1211. The mounting seat 2 is fixed to the inner pot 1. The heat dissipation fan 3 is located above the inner pot 1, and the heat dissipation fan 3 has an air outlet 31. The air duct 4 is located above the inner pot 1, and a heat dissipation channel 41 is surrounded on the inner side of the air duct 4. The heat dissipation channel 41 is connected to the air outlet 31 and is located in the direction of the air outlet 31. The cooking cavity 111, the exhaust port 1211 and the heat dissipation channel 41 are connected in sequence from bottom to top; a mounting through hole 42 is provided on the top wall of the air duct 4, and the mounting through hole 42, the exhaust port 1211 and the mounting seat 2 are arranged in sequence from top to bottom. The diaphragm 5 includes a first connection part 51 and a second connection part 52. The second connection part 52 is arranged around the first connection part 51 and is fixedly connected to the top wall of the air duct 4. The second connection part 52 and the first connection part 51 jointly seal the mounting through hole 42. The connecting member 6 is fixedly connected to the first connection part 51. The connecting member 6 passes through the exhaust port 1211 and has a gap between the exhaust port 1211. The blocking member 7 is fixedly connected to the connecting member 6, and the blocking member 7 is used to block the exhaust port 1211. The elastic member 8 is sandwiched between the blocking member 7 and the mounting seat 2. The blocking member 7, the elastic member 8 and the mounting seat 2 are arranged in sequence from top to bottom. In the process of gradually increasing the working power of the heat dissipation fan 3, the first connection part 51 is gradually moved downward by the negative pressure in the heat dissipation channel 41, so that the connecting member 6 and the blocking member 7 gradually move downward, so that the blocking member 7 gradually moves away from the exhaust port 1211. In this process, the elastic member 8 is gradually compressed. As the working power of the heat dissipation fan 3 gradually decreases, the elastic member 8 gradually rebounds, so that the blocking member 7 , the connecting member 6 and the first connecting portion 51 gradually move upward, thereby making the blocking member 7 gradually approach the exhaust port 1211 .

[0058] It can be understood that the water vapor and heat in the cooking cavity 111 flow into the exhaust port 1211 through the space between the blocking member 7 and the exhaust port 1211, and are discharged. The larger the space between the blocking member 7 and the exhaust port 1211, the faster the water vapor and heat are discharged; the smaller the space between the blocking member 7 and the exhaust port 1211, the slower the water vapor and heat are discharged.

[0059] The cooking device has at least the following beneficial effects:

[0060] When the heat dissipation fan 3 is working, a high-speed airflow is generated in the heat dissipation channel 41, and the pressure in the heat dissipation channel 41 is less than the atmospheric pressure. In other words, negative pressure appears in the heat dissipation channel 41. The top side of the first connection part 51 is affected by the atmospheric pressure, and the bottom side of the first connection part 51 is affected by the negative pressure in the heat dissipation channel 41, so suction appears on the bottom side of the first connection part 51. In the process of gradually increasing the working power of the heat dissipation fan 3, the air pressure in the heat dissipation channel 41 gradually decreases, and the suction on the bottom side of the first connection part 51 gradually increases, and the first connection part 51, the connecting member 6 and the blocking member 7 gradually move downward, so that the blocking member 7 gradually moves away from the exhaust port 1211. In other words, the space between the blocking member 7 and the exhaust port 1211 gradually increases. In this process, the elastic member 8 is gradually compressed. In the process of gradually decreasing the working power of the heat dissipation fan 3, the air pressure in the heat dissipation channel 41 gradually increases, the suction force on the bottom side of the first connection part 51 gradually decreases, the elastic member 8 gradually rebounds, the blocking member 7, the connection member 6 and the first connection part 51 gradually move upward, and the blocking member 7 gradually approaches the exhaust port 1211. In other words, the space between the blocking member 7 and the exhaust port 1211 gradually becomes smaller. In short, the cooking device can adjust the size of the space between the blocking member 7 and the exhaust port 1211 by adjusting the rotation speed of the heat dissipation fan 3. When it is necessary to quickly discharge water vapor, the space between the blocking member 7 and the exhaust port 1211 can be increased to increase the speed of water vapor discharge; when it is not necessary to quickly discharge water vapor, the space between the blocking member 7 and the exhaust port 1211 can be reduced, thereby reducing the speed of heat loss in the inner pot 1, which is conducive to energy saving.

[0061] As described above, the first connection part 51 and the second connection part 52 are two parts of the diaphragm 5. Specifically, the first connection part 51 is the central part of the diaphragm 5, and the second connection part 52 is the edge part of the diaphragm 5. It should be noted that there may be no obvious boundary between the first connection part 51 and the second connection part 52.

[0062] Exemplarily, the diaphragm 5 is a silicone film / plastic film. The diaphragm 5 can be located in the mounting through hole 42, or below or above the mounting through hole 42. The second connecting portion 52 is fixed and sealed to the top wall of the air duct 4 by means of sealant bonding / in-mold injection molding / riveting.

[0063] Exemplarily, the connecting member 6 and the first connecting portion 51 are fixedly connected by bonding / injection molding / riveting.

[0064] In some embodiments, the cooking device is a steamer. During the preheating stage of the cooking device (the preheating stage of the steamer refers to the stage when the steamer just starts to heat water to generate water vapor until the temperature in the inner pot 1 reaches the set temperature), the heat dissipation fan 3 can be turned off to minimize the space between the blocking member 7 and the exhaust port 1211, thereby minimizing the speed of water vapor and heat loss, thereby accumulating a large amount of water vapor in the cooking cavity 111 as soon as possible, and raising the temperature in the cooking cavity 111 as soon as possible, thereby improving cooking efficiency. After the cooking device is heated to the set temperature, the working power of the heat dissipation fan 3 can be maintained at a high level, thereby making the space between the blocking member 7 and the exhaust port 1211 larger to discharge excess water vapor, thereby preventing excessive water vapor in the inner pot 1 from causing excessive pressure in the inner pot 1.

[0065] In some embodiments, the cooking device is an oven. During the heating stage of baking food, the food contains a lot of water, and more water vapor evaporates from the food per unit time. Too much water vapor in the inner pot 1 will reduce the baking effect. During the heating stage of baking food, the working power of the heat dissipation fan 3 can be maintained at the highest level, so that the space between the blocking member 7 and the exhaust port 1211 is maximized to achieve rapid discharge of water vapor, thereby ensuring the baking effect of the baked food in the early stage. During the heat preservation and maturation stage of baking food, there is very little water remaining in the food, and less water vapor evaporates from the food per unit time, so there is no need to quickly discharge the water vapor. At this time, the temperature in the cooking cavity 111 is required to be maintained near the set temperature and fluctuate only within a small temperature range to maintain the stability of the baking environment, thereby ensuring the baking effect. During the heat preservation and cooking stage of baked food, the heat dissipation fan 3 can be turned off to minimize the space between the sealing member 7 and the exhaust port 1211, thereby ensuring that the rate of heat loss in the inner pot 1 is minimized. On the one hand, this saves energy, and on the other hand, it can ensure that the temperature fluctuation in the cooking cavity 111 is as small as possible, improve the stability of the baking environment, and ensure the baking effect in the constant temperature stage.

[0066] In some embodiments, the cooking device is a steam oven. When the cooking device is in the preheating stage under the steaming function mode, the heat dissipation fan 3 can be turned off to minimize the space between the blocking member 7 and the exhaust port 1211, thereby minimizing the speed of water vapor and heat loss, thereby accumulating a large amount of water vapor in the cooking cavity 111 as soon as possible, and increasing the temperature in the cooking cavity 111 as soon as possible, thereby improving the cooking efficiency. When the cooking device is in the steaming function mode, and after the cooking device is heated to the set temperature, the working power of the heat dissipation fan 3 can be maintained at a high level, thereby making the space between the blocking member 7 and the exhaust port 1211 larger, so as to discharge excess water vapor, thereby preventing excessive water vapor in the inner pot 1 from causing excessive pressure in the inner pot 1. When the cooking device is in the heating stage under the baking function mode, the working power of the heat dissipation fan 3 can be maintained at the highest level, thereby making the space between the blocking member 7 and the exhaust port 1211 the largest, so as to achieve rapid discharge of water vapor, thereby ensuring the baking effect in the early stage of baking food. When the cooking device is in the baking function mode and in the heat preservation and cooking stage of the baked food, the heat dissipation fan 3 can be turned off to minimize the space between the sealing member 7 and the exhaust port 1211, thereby ensuring that the rate of heat loss in the inner pot 1 is minimized. On the one hand, this saves energy, and on the other hand, it can ensure that the temperature fluctuation in the cooking cavity 111 is as small as possible, improve the stability of the baking environment, and ensure the baking effect in the constant temperature stage.

[0067] When the heat dissipation fan 3 is not working, the blocking member 7 blocks the exhaust port 1211 and the compression amount of the elastic member 8 is △x. The elastic coefficient of the elastic member 8 is k, the weight of the blocking member 7 is G1, and the weight of the connecting member 6 is G2. Preferably, △x, k, G1 and G2 satisfy: 0≤k*△x-(G1+G2)≤0.01N. In this way, when the heat dissipation fan 3 is not working, the elastic member 8 has a very small force on the blocking member 7, which is conducive to the blocking member 7 moving downward after the heat dissipation fan 3 is working.

[0068] It should be noted that, in the cooking device, the minimum rotation speed of the heat dissipation fan 3 is usually 900 rpm. When the heat dissipation fan 3 is operating at the minimum rotation speed, a relatively large negative pressure will appear in the heat dissipation channel 41 .

[0069] In some embodiments where the minimum speed of the cooling fan 3 is higher and / or the area of ​​the first connecting portion 51 is larger, [k*△x-(G1+G2)] is also allowed to be larger. For example, 0.01N<k*△x-(G1+G2)≤0.1N.

[0070] Preferably, when the heat dissipation fan 3 is not working, the diaphragm 5 is arched upward. This leaves a large space for the first connection portion 51 to move downward, which is conducive to increasing the stroke of the blocking member 7 and the maximum distance between the blocking member 7 and the exhaust port 1211, thereby increasing the adjustable range of the space between the blocking member 7 and the exhaust port 1211. In other embodiments, when the heat dissipation fan 3 is not working, all parts of the diaphragm 5 can also be located in the same plane.

[0071] Preferably, see Figure 2 and Figure 4 The air duct 4 is a Venturi structure, and includes a contraction section 43, a throat section 44, and an expansion section 45. The contraction section 43, the throat section 44, and the expansion section 45 are sequentially arranged along the direction of the air outlet 31, and the inner side of the contraction section 43, the inner side of the throat section 44, and the inner side of the expansion section 45 jointly surround the heat dissipation channel 41. In this way, the gas is accelerated when flowing through the contraction section 43 and the throat section 44, and the pressure in the throat section 44 and the contraction section 43 can be reduced.

[0072] In some embodiments, the first connection portion 51 is located at the throat section 44. This can increase the suction force on the bottom side of the first connection portion 51, which is conducive to moving the first connection portion 51 downward.

[0073] In some embodiments, the first connection portion 51 is located on the portion of the contraction section 43 close to the throat section 44. This can increase the suction force on the bottom side of the first connection portion 51, which is conducive to moving the first connection portion 51 downward.

[0074] See also Figure 2 and Figure 4 In some embodiments, a portion of the first connection portion 51 is located at the throat section 44, and another portion is located at the portion of the contraction section 43 close to the throat section 44. This can increase the suction force on the bottom side of the first connection portion 51, which is conducive to moving the first connection portion 51 downward.

[0075] Preferably, compared Figure 2 and Figure 3 , the air outlet 31 is located in the contraction section 43. This can ensure that the wind blown out of the air outlet 31 all enters the heat dissipation channel 41, which is conducive to reducing the air pressure in the heat dissipation channel 41, and is conducive to increasing the suction force on the bottom side of the first connection part 51, which is conducive to moving the first connection part 51 downward. In other embodiments, the air outlet 31 can also be located outside the contraction section 43.

[0076] In other embodiments, the air duct 4 may also only include the throat section 44 and the expansion section 45, the inner side of the throat section 44 and the inner side of the expansion section 45 jointly surround the heat dissipation channel 41, and the first connecting portion 51 is located in the throat section 44. In these embodiments, the air outlet 31 may be located inside the throat section 44 or outside the throat section 44.

[0077] In some embodiments, the exhaust port 1211 is a circular hole, and the diameter of the exhaust port 1211 is D0. The blocking member 7 is a truncated cone, the upper base diameter of the blocking member 7 is D1, and the lower base diameter of the blocking member 7 is D2, and D0, D1, and D2 satisfy: D1<D0≤D2. In this way, the blocking member 7 can be extended into the exhaust port 1211, and in the process of the blocking member 7 entering and exiting the exhaust port 1211, the distance between the blocking member 7 and the exhaust port 1211 along the radial direction of the exhaust port 1211 changes continuously and gradually, so that the size of the space between the blocking member 7 and the exhaust port 1211 can be infinitely adjusted.

[0078] See also Figure 6 In some embodiments, the blocking member 7 may also be in a plate shape, and the entire blocking member 7 is located below the exhaust port 1211 .

[0079] See also Figure 7 A guide hole 21 is provided on one of the mounting seat 2 and the blocking member 7, and a guide member 9 adapted to the guide hole 21 is fixed on the other. The guide hole 21 and the guide member 9 are both arranged along the vertical direction, and the guide member 9 is at least partially located in the guide hole 21. Through the cooperation between the guide member 9 and the guide hole 21, the blocking member 7 can maintain the stability and accuracy of its moving path, which improves the reliability of the blocking member 7.

[0080] Exemplarily, the guide hole 21 is a circular hole, and the guide member 9 is a cylinder; or, the guide hole 21 is a square hole, and the guide member 9 is a cuboid.

[0081] In other embodiments, a slide groove is provided on one of the mounting seat 2 and the blocking member 7, and a slide rail adapted to the slide groove is fixedly provided on the other. Both the slide groove and the slide rail are arranged along the vertical direction, and the slide rail is at least partially located in the slide groove.

[0082] Preferably, see Figure 7 , the elastic member 8 is sleeved on the guide member 9. The elastic member 8 is guided by the guide member 9 to maintain the stability and accuracy of its telescopic path and avoid deviation under stress, which improves the reliability of the elastic member 8.

[0083] Exemplarily, the elastic member 8 is a coil spring or a bellows.

[0084] In other embodiments, the elastic member 8 may also be arranged parallel to the guide member 9 .

[0085] See also Figure 3 and Figure 7The inner pot 1 comprises an inner pot body 11 and an extension 12, the extension 12 is sealed and connected to the outer top wall of the inner pot body 11, the inner side of the inner pot body 11 surrounds a cooking cavity 111, an exhaust channel 121 is arranged in the extension 12, the part of the exhaust channel 121 away from the inner pot body 11 forms an exhaust port 1211, the part of the exhaust channel 121 close to the inner pot body 11 forms a receiving cavity 1212, the heat dissipation channel 41, the exhaust port 1211, the receiving cavity 1212, and the cooking cavity 111 are connected in sequence from top to bottom, and the blocking member 7 is located in the receiving cavity 1212. In this way, the blocking member 7 can move up and down in the receiving cavity 1212 to change the size of the space between it and the exhaust port 1211, and does not need to enter the cooking cavity 111. In other words, the blocking member 7 does not occupy the space in the cooking cavity 111 during operation, which is conducive to placing more food in the cooking cavity 111.

[0086] In other embodiments, the inner pot 1 may also only include the inner pot body 11. In other words, the extension part 12 is not provided in the cooking device, the exhaust port 1211 is opened on the top wall of the inner pot body 11, and the blocking part 7 occupies the upper space of the cooking cavity 111 during operation.

[0087] See also Figure 1 and Figure 7 , the mounting seat 2 is fixedly disposed on the inner container body 11. In other embodiments, the mounting seat 2 can also be fixedly disposed on the side wall of the accommodating cavity 1212.

[0088] See also Figure 7 The mounting through hole 42, the exhaust port 1211, the accommodating cavity 1212, the connecting member 6 and the blocking member 7 are all in the shape of a body of revolution, and their axes are located on the same plumb line. In other embodiments, their axes may also be located on the same straight line inclined relative to the plumb line.

[0089] The present application further provides an exhaust gas adjustment method, which is applied to the above-mentioned cooking device, and the cooking device is a steam oven. The exhaust gas adjustment method comprises the following steps:

[0090] When the cooking device performs the steaming function, the heat dissipation fan 3 is turned off when the relative humidity in the cooking cavity 111 is less than 80% to minimize the space between the blocking member 7 and the exhaust port 1211; and

[0091] When the cooking device is performing the grilling function, the heat dissipation fan 3 is closed when the cooking device is in the heat preservation and cooking stage of grilling food so as to minimize the space between the blocking member 7 and the exhaust port 1211 .

[0092] The exhaust gas regulation method has at least the following beneficial effects:

[0093] When the cooking device performs the steaming function and the relative humidity in the cooking cavity 111 is less than 80%, the exhaust adjustment method turns off the heat dissipation fan 3 to minimize the space between the blocking member 7 and the exhaust port 1211, thereby minimizing the speed at which the high-temperature steam in the cooking device diffuses to the outside, which is conducive to accumulating a large amount of high-temperature steam in the cooking cavity 111 as soon as possible when the cooking device performs the steaming function, thereby improving the efficiency of the cooking device in steaming food. When the cooking device performs the baking function and the cooking device is in the heat preservation and maturation stage of baking food, the exhaust adjustment method turns off the heat dissipation fan 3 to minimize the space between the blocking member 7 and the exhaust port 1211, thereby minimizing the speed at which the hot gas in the cooking cavity 111 diffuses to the outside, which is conducive to keeping the temperature in the cooking cavity 111 near the set temperature during the heat preservation and maturation stage of baking food, and only fluctuating within a small temperature range, which is conducive to maintaining the stability of the baking environment during the heat preservation and maturation stage, thereby ensuring the baking effect.

[0094] Exemplarily, in order to obtain the relative humidity in the cooking cavity 111 , a humidity sensor or a temperature and humidity sensor is provided in the cooking cavity 111 .

[0095] 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.

[0096] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of protection of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the attached claims.

Claims

1. A cooking device, characterized in that: include: An inner pot (1), wherein a cooking cavity (111) is provided in the inner pot (1), and an exhaust port (1211) is provided on the inner pot (1); A mounting seat (2) fixedly mounted on the inner container (1); A heat dissipation fan (3), located above the inner tank (1), the heat dissipation fan (3) having an air outlet (31); An air duct (4) is located above the inner pot (1); a heat dissipation channel (41) is enclosed on the inner side of the air duct (4); the heat dissipation channel (41) is connected to the air outlet (31) and is located in the direction of the air outlet (31); the cooking cavity (111), the exhaust port (1211) and the heat dissipation channel (41) are connected in sequence from bottom to top; a mounting through hole (42) is provided on the top wall of the air duct (4); the mounting through hole (42), the exhaust port (1211) and the mounting seat (2) are arranged in sequence from top to bottom; The diaphragm (5) comprises a first connecting portion (51) and a second connecting portion (52), wherein the second connecting portion (52) is arranged around the first connecting portion (51) and is fixedly connected to the top wall of the air duct (4), and the second connecting portion (52) and the first connecting portion (51) jointly seal the mounting through hole (42); a connecting member (6) fixedly connected to the first connecting portion (51), the connecting member (6) passing through the exhaust port (1211) and having a gap between the connecting member (6) and the exhaust port (1211); a blocking member (7), fixedly connected to the connecting member (6) and used for blocking the exhaust port (1211); and An elastic member (8) is sandwiched between the blocking member (7) and the mounting seat (2), wherein the blocking member (7), the elastic member (8) and the mounting seat (2) are arranged in sequence from top to bottom; As the working power of the heat dissipation fan (3) gradually increases, the first connection portion (51) gradually moves downward under the action of the negative pressure in the heat dissipation channel (41), so that the blocking member (7) gradually moves away from the exhaust port (1211).

2. The cooking device according to claim 1, characterized in that: When the heat dissipation fan (3) is not working, the blocking member (7) blocks the exhaust port (1211) and the compression amount of the elastic member (8) is △x; the elastic coefficient of the elastic member (8) is k, the weight of the blocking member (7) is G1, the weight of the connecting member (6) is G2, and △x, k, G1 and G2 satisfy: 0≤k*△x-(G1+G2)≤0.01N.

3. The cooking device according to claim 2, characterized in that: When the heat dissipation fan (3) is not working, the diaphragm (5) arches upward.

4. The cooking device according to claim 2, characterized in that: The air duct (4) is a Venturi structure, and comprises a contraction section (43), a throat section (44) and an expansion section (45). The contraction section (43), the throat section (44) and the expansion section (45) are arranged in sequence along the direction of the air outlet (31), and the inner side of the contraction section (43), the inner side of the throat section (44) and the inner side of the expansion section (45) together enclose the heat dissipation channel (41), wherein: The first connecting portion (51) is located at the throat section (44); or, The first connecting portion (51) is located on the portion of the contraction section (43) close to the throat section (44); or, A portion of the first connecting portion (51) is located on the throat section (44), and another portion is located on a portion of the contraction section (43) close to the throat section (44).

5. The cooking device according to claim 4, characterized in that: The air outlet (31) is located in the contraction section (43).

6. The cooking device according to claim 1, characterized in that The exhaust port (1211) is a circular hole, and the diameter of the exhaust port (1211) is D0; the blocking member (7) is a truncated cone, the upper base diameter of the blocking member (7) is D1, and the lower base diameter of the blocking member (7) is D2, and D0, D1 and D2 satisfy: D1<D0≤D2.

7. The cooking device according to claim 1, characterized in that A guide hole (21) is provided on one of the mounting seat (2) and the blocking member (7), and a guide member (9) adapted to the guide hole (21) is fixedly provided on the other, the guide hole (21) and the guide member (9) are both arranged along the vertical direction, and the guide member (9) is at least partially located in the guide hole (21).

8. The cooking device according to claim 7, characterized in that The elastic member (8) is sleeved on the guide member (9).

9. The cooking device according to claim 1, characterized in that: The inner pot (1) comprises an inner pot body (11) and an extension piece (12); the extension piece (12) is sealed and connected to the outer top wall of the inner pot body (11); the inner side of the inner pot body (11) surrounds the cooking cavity (111); an exhaust channel (121) is provided in the extension piece (12); the portion of the exhaust channel (121) away from the inner pot body (11) forms the exhaust port (1211); the portion of the exhaust channel (121) close to the inner pot body (11) forms the accommodating cavity (1212); the heat dissipation channel (41), the exhaust port (1211), the accommodating cavity (1212), and the cooking cavity (111) are connected in sequence from top to bottom; and the blocking piece (7) is located in the accommodating cavity (1212).

10. An exhaust gas adjustment method, applied to the cooking device according to any one of claims 1 to 9, wherein the cooking device is a steam oven, characterized in that: The exhaust gas adjustment method comprises: When the cooking device is performing a steaming function, the heat dissipation fan (3) is in a closed state when the relative humidity in the cooking cavity (111) is less than 80%, so that the space between the blocking member (7) and the exhaust port (1211) is minimized; and During the cooking device's grilling function, the heat dissipation fan (3) is turned off when the cooking device is in the heat preservation and cooking stage of grilling food, so that the space between the blocking member (7) and the exhaust port (1211) is minimized.

Images