Heat dissipation assembly, steaming and baking cooking machine and heat dissipation method

Abstract

The invention relates to a heat dissipation assembly, a steaming and baking cooking machine and a heat dissipation method, the heat dissipation assembly comprises a fan shell and a heat dissipation fan, and the heat dissipation fan is provided with an upper cavity and a lower cavity which are overlapped, a communicating hole communicating with the upper cavity and the lower cavity, and a first opening and a second opening which communicate with the upper cavity and are separated from each other; the two ends of the first drainage channel communicate with the first opening and the communicating hole correspondingly, the second drainage channel communicates with the second opening and the lower cavity and is isolated from the first drainage channel, and the second opening is used for communicating with the ventilation interlayer of the door assembly; the heat dissipation fan is arranged in the upper cavity, corresponds to the communicating hole and is used for guiding air in the ventilation interlayer to sequentially flow through the second opening, the second drainage channel, the lower cavity, the communicating hole, the first drainage channel and the first opening. In this way, air inlet and outlet are not limited by the narrow installation space of the steaming and baking cooking machine, the heat dissipation effect is improved, the two drainage channels and the lower cavity are integrated in the same fan shell, and the space occupied by the heat dissipation assembly is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation of steaming and baking cooking machines, and in particular to a heat dissipation component, a steaming and baking cooking machine and a heat dissipation method. Background Art

[0002] With the improvement of living standards and changes in eating habits, steam ovens can heat or assist in heating food through heating tubes to make baked dishes, snacks and other foods. Therefore, they are deeply loved by consumers and have become an indispensable food cooking tool in everyone's daily life.

[0003] The steam oven generates high temperature and high pressure to heat the food, so the oven door is required to have good heat insulation function. The heat insulation function is achieved through multi-layer tempered glass + LOWE coating. The cooling method of the outer door glass is mostly to open vents on the top, bottom, left and right of the door body or to allow the internal heat dissipation fan to blow the air into the internal space of the door assembly through structural design. The existing heat dissipation duct structure of the steam oven mostly uses a centrifugal fan set in the door to blow air from the inside of the machine to the outside to take away excess heat. The heat dissipation effect of this structure is poor: the centrifugal fan creates negative pressure inside the machine so that the machine passively inhales the cold air from the outside. The steam oven cooking machine is usually installed in a cabinet or arranged against the wall. After the machine has been running for a period of time, the temperature of the wall or cabinet rises. The cold air has been heated by the cabinet or wall before entering the machine, or has absorbed some heat, resulting in the cold air actually absorbing limited heat after entering the machine. Summary of the invention

[0004] Since the existing steam-bake cooking machine has a poor heat dissipation effect due to the space limitation of the installation environment, it is necessary to provide a heat dissipation structure, a steam-bake cooking machine and a heat dissipation method.

[0005] The heat dissipation component is used to dissipate heat from the door component of the steam-bake cooking machine, comprising:

[0006] A fan housing, comprising an upper cavity and a lower cavity stacked on each other, a connecting hole connected to the upper cavity and the lower cavity, and a first opening and a second opening connected to the upper cavity and separated from each other; the upper cavity comprises a first drainage channel whose two ends are respectively connected to the first opening and the connecting hole, and a second drainage channel connected to the second opening and the lower cavity and isolated from the first drainage channel, and the second opening is used to connect to the ventilation interlayer of the door assembly; and

[0007] A heat dissipation fan is arranged in the upper cavity and corresponding to the connecting hole, and is used to guide the air in the ventilation interlayer to flow through the second opening, the second drainage channel, the lower cavity, the connecting hole, the first drainage channel and the first opening in sequence.

[0008] In this way, the two drainage channels and the lower cavity are integrated in the same fan casing, which reduces the space occupied by the heat dissipation components and has less impact on the spatial layout on the top of the steam-bake cooking machine; the first opening and the second opening are integrated into the suction port of the ventilation interlayer, and because the two openings are isolated from each other and the two drainage channels are isolated from each other, the incoming and outgoing wind will not interfere with each other, the incoming and outgoing wind will not be restricted by the small installation space of the steam-bake cooking machine, and the temperature of the inlet and outlet airflow will not be affected by the increase in temperature of the surrounding cabinets or the wall, thereby improving the heat dissipation effect.

[0009] In one embodiment, the fan housing includes a mounting plate, a fan cover and a partition plate providing the connecting hole, the fan cover is fixed to the mounting plate to form the first opening and the second opening between the fan cover and the mounting plate; the partition plate is arranged between the mounting plate and the fan cover to divide the internal space of the fan housing into the upper chamber and the lower chamber.

[0010] With this arrangement, the two drainage channels are surrounded by the fan cover and the partition plate, so the fan cover can be pre-installed on the partition plate and then installed on the mounting plate together, which simplifies the assembly and the pre-installed structure has a higher strength, which is beneficial to increase the stability of the shape of the first drainage duct and the second drainage duct.

[0011] In one embodiment, the fan cover includes a cover plate and an outer ring body and an inner ring body arranged at intervals on the cover plate, the outer ring body is provided with a first notch to enclose the upper cavity and the external interface connected to the upper cavity together with the partition plate and the cover plate, the inner ring body is provided with a second notch located at the external interface to divide the external interface into the first opening and the second opening, the inner ring body is located in the upper cavity and the partition plate is provided with a third notch matching the shape of the inner ring body to divide the upper cavity into the first drainage channel and the second drainage channel.

[0012] Such an arrangement simplifies the structure, facilitates demoulding, and helps reduce production costs. The inner ring body also supports the partition plate, which helps reduce deformation of the partition plate, thereby maintaining the structural stability of the second drainage channel.

[0013] In one embodiment, the inner ring body includes two stop plates extending from the cover plate to the partition plate, the two stop plates are respectively arranged at intervals close to the two ends of the external interface to form the second notch, the two stop plates are respectively connected to each other at the two ends away from the external interface to form the second drainage channel with the cover plate, and the distance between the two stop plates gradually decreases from the second notch inward.

[0014] With such a configuration, the two stop plates can not only guide the airflow in the first drainage channel to reduce wind noise, but also divide the air into two parts when exhausting, thereby avoiding air accumulation in the first drainage channel. Especially when the steam-bake cooking machine is in steaming mode, it is also beneficial to reduce the phenomenon of condensation water in the first drainage channel.

[0015] In one of the embodiments, the two stop plates are arranged in a V shape.

[0016] Such a configuration facilitates the diversion of air in the first drainage channel, reduces wind noise caused by turbulence, increases the air flow velocity at the first opening, speeds up steam discharge, and reduces condensed water in the first drainage channel.

[0017] In one of the embodiments, the inner side of the outer ring body is provided with a step surface facing the mounting plate, and the partition plate is attached to the step surface.

[0018] Such an arrangement makes it easy to install the partition plate to the fan cover. In addition, there is a clear boundary between the first drainage channel and the lower cavity, and there will be no air cross-talk problem.

[0019] In one embodiment, the fan casing also includes a flow balancing cover fixedly connected to the fan cover and covering the first opening and the second opening, and an adapter installed on the flow balancing cover, the flow balancing cover having a first hole group connected to the first opening and a second hole group connected to the second opening, and two ends of the adapter are respectively covered on the second hole group and a ventilation interlayer used to cover the door assembly.

[0020] Such a configuration, on the one hand, reduces air leakage at the suction port, thereby increasing the negative pressure at the suction port and improving the heat dissipation effect on the door assembly; on the other hand, it guides the exhaust air to avoid air accumulation and mixing in the first drainage channel 1011, thereby reducing condensed water.

[0021] The present application also provides a steaming and baking cooking machine, comprising:

[0022] An inner tank assembly having an open opening;

[0023] a door assembly, which covers the opening and has a ventilation interlayer; and

[0024] As in the heat dissipation assembly mentioned above, the mounting plate of the heat dissipation assembly is mounted on the inner tank assembly, and the second opening of the heat dissipation assembly is connected to the ventilation interlayer.

[0025] With such a configuration, the heat dissipation assembly directly draws air from the ventilation interlayer of the door assembly and does not block exhaust, thereby improving the heat dissipation efficiency of the door assembly and taking up less space in the steam-bake cooking machine, without affecting the spatial layout of the top of the steam-bake cooking machine.

[0026] The present application also provides a heat dissipation method, which is applicable to the above-mentioned steam-bake cooking machine, wherein the steam-bake cooking machine has a steaming mode and a baking mode, and comprises the following steps:

[0027] When the steam-bake cooking machine is in steam mode, the cooling fan can only rotate forward;

[0028] When the steam-bake cooking machine is in the baking mode, the heat dissipation fan is set to switch between forward rotation and reverse rotation periodically to cool down the door assembly and the mounting plate in turn.

[0029] With such arrangement, in steaming mode, the heat dissipation fan is also used to discharge excess steam in the inner pot, while in baking mode, the overall temperature of the steam-bake cooking machine is in a balanced state by cooling the door assembly and the mounting plate in turn, thereby maintaining the normal operating temperature of the steam-bake cooking machine. Since the steam-bake cooking machine is usually installed in a small space, such as in a cabinet, which mostly uses wood materials such as synthetic boards, the safety hazard can be reduced by eliminating the problem of excessive local temperature of the steam-bake cooking machine.

[0030] In one embodiment, the heat dissipation method further includes the following steps:

[0031] When the steam-bake cooking machine is in the baking mode, the temperature of the ventilation interlayer and the temperature of the fan housing are detected;

[0032] Determining whether the temperature of the ventilation interlayer is greater than a first preset value;

[0033] In response to the temperature of the ventilation interlayer being greater than a first preset value, controlling the heat dissipation fan to rotate forward;

[0034] In response to the temperature of the ventilation interlayer being less than or equal to the first preset value, determining whether the temperature of the fan housing is greater than a second preset value;

[0035] In response to the temperature of the fan housing being greater than a second preset value, controlling the heat dissipation fan to reverse; and

[0036] In response to the temperature of the fan housing being less than or equal to a second preset value, the heat dissipation fan is maintained in forward rotation.

[0037] This arrangement enables precise control of the timing of switching between the forward and reverse rotation of the cooling fan, ensuring that the temperature of the entire steam-bake cooking machine is in a balanced state. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the structure of a steaming and baking cooking machine in one embodiment provided in the present application;

[0039] Figure 2 for Figure 1 A schematic diagram of the structure of a door assembly and an inner pot assembly in a steam-bake cooking machine;

[0040] Figure 3 for Figure 1 A schematic diagram of the structure of the heat dissipation component;

[0041] Figure 4 for Figure 2 A schematic plan view of the heat dissipation assembly shown;

[0042] Figure 5 for Figure 4 A cross-sectional view of the heat dissipation assembly along the AA direction is shown;

[0043] Figure 6 for Figure 4 A cross-sectional view of the heat dissipation assembly in the BB direction is shown;

[0044] Figure 7 for Figure 4 Schematic diagram of the structure of the stroke hood;

[0045] Figure 8 for Figure 4 Structural schematic diagram of the middle partition plate;

[0046] Fig. 9 for Figure 7 The fan guard shown is Figure 8 A schematic diagram of the structure of the partition plate after assembly;

[0047] Fig.10 A flow chart of the heat dissipation method provided in this application.

[0048] Reference numerals:

[0049] 10. Fan casing; 101. Upper cavity; 1011. First drainage channel; 1012. Second drainage channel; 102. Lower cavity; 103. Connecting hole; 104. First opening; 105. Second opening; 11. Mounting plate; 12. Fan cover; 121. Cover plate; 122. Outer ring body; 1221. Step surface; 123. Inner ring body; 1231. Stop plate; 124. Expansion body; 13. Partition plate; 131. Third notch; 14. Flow equalizing cover; 141. First hole group; 142. Second hole group; 15. Adapter; 20. Cooling fan; 30. Door assembly; 301. Suction port; 40. Inner tank assembly; 50. Steam channel. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention 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 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 violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0051] In the description of the present invention, 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 invention 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 limiting the present invention.

[0052] 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 the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, 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 the present invention can be understood according to specific circumstances.

[0054] In the present invention, 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 the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "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" or "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.

[0055] 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.

[0056] With the improvement of living standards and changes in eating habits, steam ovens can heat or assist in heating food through heating tubes to make baked dishes, snacks and other foods. Therefore, they are deeply loved by consumers and have become an indispensable food cooking tool in everyone's daily life.

[0057] The steam oven generates high temperature and high pressure to heat the food, so the oven door is required to have good heat insulation function. The heat insulation function is achieved through multi-layer tempered glass + LOWE coating. The cooling method of the outer door glass is mostly to open vents on the top, bottom, left and right of the door body or to allow the internal heat dissipation fan to blow the air into the internal space of the door assembly through structural design. The existing heat dissipation duct structure of the steam oven mostly uses a centrifugal fan set in the door to blow air from the inside of the machine to the outside to take away excess heat. The heat dissipation effect of this structure is poor: the centrifugal fan creates negative pressure inside the machine so that the machine passively inhales the cold air from the outside. The steam oven cooking machine is usually installed in a cabinet or arranged against the wall. After the machine has been running for a period of time, the temperature of the wall or cabinet rises. The cold air has been heated by the cabinet or wall before entering the machine, or has absorbed some heat, resulting in the cold air actually absorbing limited heat after entering the machine.

[0058] Based on this, it is necessary to provide a heat dissipation component, a steaming and baking cooking machine and a heat dissipation method that can improve the heat dissipation effect and occupy less space.

[0059] See also Figures 1 to 3 , Figure 1 This is a schematic diagram of the structure of a steaming and baking cooking machine in one embodiment of the present invention. Figure 2 for Figure 1 The schematic diagram of the structure of the door assembly 30 and the inner pot assembly 40 of the steam-bake cooking machine is shown in FIG. Figure 3 for Figure 1 The steaming and baking cooking machine comprises an inner pot assembly 40, a door assembly 30 and a heat dissipation assembly, wherein the inner pot assembly 40 has an opening, the door assembly 30 is arranged to cover the opening and has a ventilation interlayer, a suction port 301 connected to the upper end of the ventilation interlayer and an air inlet connected to the lower end of the ventilation interlayer, and the heat dissipation assembly is installed on the upper side of the inner pot assembly 40 and is used to exhaust air from the suction port 301 to the ventilation interlayer.

[0060] See also Figures 2 to 6 , Figure 3 for Figure 1 Schematic diagram of the structure of the heat dissipation component. Figure 4 for Figure 3 A plan view of the heat dissipation component shown in FIG. Figure 5 for Figure 4 A cross-sectional view of the heat dissipation assembly taken along the AA direction is shown; Figure 6 for Figure 4 The heat dissipation assembly is shown in a cross-sectional view along the BB direction. Specifically, the heat dissipation assembly includes a fan housing 10 and a heat dissipation fan 20, the fan housing 10 has an upper chamber 101 and a lower chamber 102 stacked on each other, a connecting hole 103 connected to the upper chamber 101 and the lower chamber 102, and a first opening 104 and a second opening 105 connected to the upper chamber 101 and separated from each other, the upper chamber 101 has a first drainage channel 1011 and a second drainage channel 1012, and the two ends of the first drainage channel 1011 are respectively connected to the first opening 104 and the connecting hole 103, The second drainage channel 1012 is isolated from the first drainage channel 1011 and is connected to the second opening 105 and the lower cavity 102. The second opening 105 is used to connect the ventilation interlayer of the door assembly 30. The heat dissipation fan 20 is arranged in the upper cavity 101 and arranged corresponding to the connecting hole 103, and is used to guide the air in the ventilation interlayer to flow through the second opening 105, the second drainage channel 1012, the lower cavity 102, the connecting hole 103, the first drainage channel 1011 and the first opening 104 in sequence. In this way, the two drainage channels and the lower cavity 102 are integrated into the same fan housing 10, reducing the space occupied by the heat dissipation component; the first opening 104 and the second opening 105 are integrated into the suction port 301 of the ventilation interlayer. Since the two openings are isolated from each other and the two drainage channels are isolated from each other, the inlet and outlet air will not interfere with each other, the inlet and outlet air will not be limited by the narrow installation space of the steaming and baking cooking machine, and the temperature of the inlet and outlet airflow will not be affected by the temperature increase of the surrounding cabinets or the wall, thereby improving the heat dissipation effect. In addition, a steam channel 50 is provided between the lower cavity 102 and the inner pot. The steam-bake cooking machine has a steaming mode and a baking mode. In the steaming mode, the steam channel 50 is opened, and the excess steam in the inner pot assembly 40 can be drawn out by the heat dissipation assembly through the steam channel 50. In one embodiment provided in the present application, the heat dissipation fan 20 adopts a centrifugal fan. It can be understood that in other embodiments, the heat dissipation fan 20 can also adopt an axial flow fan.

[0061] See also Figures 3 to 9 , Figure 7 for Figure 4 A schematic diagram of the structure of the stroke cover 12, Figure 8 for Figure 4 A schematic diagram of the structure of the middle partition plate 13, Fig. 9 for Figure 7 The fan guard 12 shown is Figure 8The schematic diagram of the structure after the partition plate 13 is assembled is shown. Specifically, the fan casing 10 includes a mounting plate 11, a fan cover 12 and a partition plate 13 providing a connecting hole 103. The fan cover 12 is fixed to the mounting plate 11 to form a first opening 104 and a second opening 105 between the fan cover 12 and the mounting plate 11. The partition plate 13 is arranged between the mounting plate 11 and the fan cover 12 to divide the internal space of the fan casing 10 into an upper chamber 101 and a lower chamber 102. The two drainage channels are surrounded by the fan cover 12 and the partition plate 13. Therefore, the fan cover 12 can be pre-installed with the partition plate 13 and then installed on the mounting plate 11 together, which simplifies the assembly. The pre-installed structure has a high strength, which is conducive to increasing the stability of the shapes of the first drainage duct and the second drainage duct.

[0062] See also Figure 5 , Figure 6 and Figure 7 and Figure 8Optionally, in an embodiment provided in the present application, the fan cover 12 includes an outer ring body 122 and an inner ring body 123 which are arranged at intervals on the cover plate 121. The outer ring body 122 is provided with a first notch to enclose an upper cavity 101 and an external interface connected to the upper cavity 101 together with the partition plate 13 and the cover plate 121. The inner ring body 123 is provided with a second notch located at the external interface to divide the external interface into a first opening 104 and a second opening 105. The inner ring body 123 is located in the upper cavity 101 and the partition plate 13 is provided with a third notch 131 matching the shape of the inner ring body 123 to divide the upper cavity 101 into a first drainage channel 1011 and a second drainage channel 1012. In other words, the inner ring body 123 encloses the outline of the second drainage channel 1012 on the cover plate 121, the outer ring body 122 is arranged around the inner ring body 123, the inner ring body 123 and the outer ring body 122 are between the outline of the first drainage channel 1011, the partition plate 13 covers the part between the inner ring body 123 and the outer ring body 122 to finally form the first drainage channel 1011, and the third notch 131 opened on the partition plate 13 is used to communicate with the second drainage channel 1012. The height of the inner ring body 123 is less than the distance between the cover plate 121 and the mounting plate 11, so that enough space is reserved for the formation of the lower cavity 102. This way of forming the drainage channel by enclosure simplifies the structure, facilitates demoulding, and is conducive to reducing production costs. The inner ring body 123 also supports the partition plate 13, which is conducive to reducing the deformation of the partition plate 13, thereby maintaining the structural stability of the second drainage channel 1012. Furthermore, in order to facilitate the installation of the partition plate 13, the inner ring of the outer ring body 122 is provided with a step surface 1221 facing the mounting plate 11, and the partition plate 13 is attached to the step surface 1221. In this way, it is convenient to fix the partition plate 13 to the fan cover 12, and the boundary between the first drainage channel 1011 and the lower cavity 102 is clear, and there will be no air cross-flow problem. The partition plate 13 can be fixed to the step surface 1221 of the outer ring body 122 by means of but not limited to gluing, welding or snapping. Optionally, the fan cover 12 also includes an expansion body 124 extending from the side of the outer ring body 122 away from the cover plate 121, and the expansion body 124 abuts against the mounting plate 11, so that the air leakage in the fan housing 10 can be reduced. It is worth noting that in the embodiment provided in the present application, the edge of one side of the partition plate 13 close to the first opening 104 abuts against the mounting plate 11, and the other edges of the partition plate 13 are connected to the inner wall of the outer ring body 122. In this way, the lower cavity 102 formed by the partition plate 13, the outer ring body 122 and the mounting plate 11 has better sealing on the side close to the first opening 104, and there will be no problem of air leakage.

[0063] Please refer again Figure 7The inner ring body 123 includes two stopper plates 1231 extending from the cover plate 121 to the partition plate 13. The two stopper plates 1231 are arranged at intervals near the two ends of the external interface to form a second gap. The two stopper plates 1231 are connected to each other at the two ends away from the external interface to form a second drainage channel 1012 with the cover plate 121. The distance between the two stopper plates 1231 gradually decreases from the second gap inward. In this way, the two stopper plates 1231 can not only guide the airflow in the first drainage channel 1011 to reduce wind noise, but also divide the air into two parts when exhausting, avoiding air accumulation at the first opening 104. Especially when the steam-bake cooking machine is in the steaming mode, it is also helpful to reduce condensed water in the first drainage channel 1011. Optionally, the two stopper plates 1231 are arranged in a V-shape, which facilitates the diversion of the air in the first drainage channel 1011, reduces the wind noise caused by turbulence, increases the air flow speed at the first opening 104, speeds up the discharge of steam, and reduces the condensed water in the first drainage channel 1011. It is understandable that in other embodiments, the two stopper plates 1231 may also be arranged in a U-shape or a trapezoidal shape, as long as the air can be guided to flow toward the two first openings 104 respectively.

[0064] Please also read Figure 2 , Figure 3 , Figure 7 and Fig. 9 , Optionally, in an embodiment provided in the present application, the fan housing 10 further includes a flow equalizer 14 fixedly connected to the fan cover 12 and covering the first opening 104 and the second opening 105, and an adapter 15 installed on the flow equalizer 14, the flow equalizer 14 has a first hole group 141 connected to the first opening 104 and a second hole group 142 connected to the second opening 105, and the two ends of the adapter 15 are respectively covered in the second hole group 142 and the suction port 301 used to cover the door assembly 30. In this way, on the one hand, the air leakage at the suction port 301 is reduced, thereby increasing the negative pressure at the suction port 301 and improving the heat dissipation effect of the door assembly 30, and on the other hand, the exhaust air is guided to avoid the accumulation and mixing of air in the first drainage channel 1011, thereby reducing condensed water.

[0065] See also Fig.10 The present application also provides a heat dissipation method, which is applicable to the above-mentioned steam-bake cooking machine, wherein the steam-bake cooking machine has a steaming mode and a baking mode, and the heat dissipation method comprises the following steps:

[0066] When the steam-bake cooking machine is in the steaming mode, the heat dissipation fan 20 is set to rotate only forward;

[0067] When the steam-bake cooking machine is in the baking mode, the heat dissipation fan 20 is set to periodically switch between forward rotation and reverse rotation to cool the door assembly 30 and the mounting plate 11 in turn.

[0068] In this way, in the steaming mode, the heat dissipation fan 20 is also used to discharge excess steam in the inner pot, and in the baking mode, the overall temperature of the steam-bake cooking machine is in a balanced state by cooling the door assembly 30 and the mounting plate 11 in turn, thereby maintaining the normal operating temperature of the steam-bake cooking machine. Since the steam-bake cooking machine is usually installed in a small space, such as in a cabinet, and these cabinets are mostly made of wood materials such as synthetic boards, the safety hazard can be reduced by eliminating the problem of excessive local temperature of the steam-bake cooking machine.

[0069] Furthermore, in order to accurately control the cooling fan 20 to switch between forward rotation and reverse rotation, the second step specifically includes the following steps:

[0070] When the steam-bake cooking machine is in the baking mode, the temperature of the ventilation interlayer and the temperature of the fan housing 10 are detected;

[0071] Determining whether the temperature of the ventilation interlayer is greater than a first preset value;

[0072] In response to the temperature of the ventilation interlayer being greater than a first preset value, controlling the heat dissipation fan 20 to rotate forward;

[0073] In response to the temperature of the ventilation interlayer being less than or equal to the first preset value, determining whether the temperature of the fan housing 10 is greater than a second preset value;

[0074] In response to the temperature of the fan housing 10 being greater than a second preset value, controlling the heat dissipation fan 20 to reverse; and

[0075] In response to the temperature of the fan housing 10 being less than or equal to the second preset value, the heat dissipation fan 20 is maintained to rotate forward.

[0076] It is understandable that the ventilation interlayer and the fan housing 10 are respectively provided with a first temperature sensor and a second temperature sensor to detect the air temperature. When the heat dissipation fan 20 rotates forward, the heat dissipation component first dissipates heat to the door component 30, and the heat dissipation fan 20 is reversed only when the temperature in the fan housing 10 rises to the second preset value. Since there is no shielding at the first opening 104 and the second opening 105, the heat dissipation fan 20 inhales air from the interlayer opening below the lower ventilation interlayer when rotating forward, and inhales air in the ventilation interlayer from the second opening 105 when the heat dissipation fan 20 rotates forward, which will not be affected by the temperature of the rear wall or the cabinet. Therefore, after the heat dissipation fan 20 is turned on, the temperature in the door component 30 or the fan housing 10 can be quickly reduced to below the first preset value or the second preset value, respectively, and there will be no situation where the temperature in the door component 30 is higher than the first preset value while the temperature in the fan housing 10 is higher than the second preset value.

[0077] 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.

[0078] 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. A heat dissipation assembly, used for dissipating heat from a door assembly (30) of a steaming and baking cooking machine, characterized in that: include: A fan casing (10) comprises an upper chamber (101) and a lower chamber (102) stacked on each other, a connecting hole (103) connecting the upper chamber (101) and the lower chamber (102), and a first opening (104) and a second opening (105) connecting the upper chamber (101) and being separated from each other; the upper chamber (101) comprises a first drainage channel (1011) whose two ends are respectively connected to the first opening (104) and the connecting hole (103), and a second drainage channel (1012) connecting to the second opening (105) and the lower chamber (102) and being separated from the first drainage channel (1011); the second opening (105) is used to connect to a ventilation interlayer of the door assembly (30); and A heat dissipation fan (20) is disposed in the upper cavity (101) and arranged corresponding to the connecting hole (103), and is used to guide the air in the ventilation interlayer to flow through the second opening (105), the second drainage channel (1012), the lower cavity (102), the connecting hole (103), the first drainage channel (1011) and the first opening (104) in sequence.

2. The heat dissipation assembly according to claim 1, characterized in that: The fan casing (10) comprises a mounting plate (11), a fan cover (12) and a partition plate (13) providing the connecting hole (103); the fan cover (12) is fixedly mounted on the mounting plate (11) to form the first opening (104) and the second opening (105) between the fan cover (12) and the mounting plate (11); the partition plate (13) is arranged between the mounting plate (11) and the fan cover (12) to divide the internal space of the fan casing (10) into the upper chamber (101) and the lower chamber (102).

3. The heat dissipation assembly according to claim 2, characterized in that: The fan cover (12) comprises a cover plate (121) and an outer ring body (122) and an inner ring body (123) arranged at intervals on the cover plate (121); the outer ring body (122) is provided with a first notch to enclose the upper chamber (101) and an external interface connected to the upper chamber (101) together with the partition plate (13) and the cover plate (121); the inner ring body (123) is provided with a second notch located at the external interface to divide the external interface into the first opening (104) and the second opening (105); the inner ring body (123) is located in the upper chamber (101) and the partition plate (13) is provided with a third notch (131) matching the shape of the inner ring body (123) to divide the upper chamber (101) into the first drainage channel (1011) and the second drainage channel (1012).

4. The heat dissipation assembly according to claim 3, characterized in that: The inner ring body (123) comprises two stop plates (1231) extending from the cover plate (121) to the partition plate (13); the two stop plates (1231) are respectively arranged at intervals close to the two ends of the external interface to form the second notch; the two stop plates (1231) are respectively connected to each other at the two ends away from the external interface to enclose the second drainage channel (1012) with the cover plate (121); and the distance between the two stop plates (1231) gradually decreases from the second notch inward.

5. The heat dissipation assembly according to claim 4, characterized in that: The two stop plates (1231) are arranged in a V shape.

6. The heat dissipation assembly according to claim 3, characterized in that: The inner side of the outer ring body (122) is provided with a step surface (1221) facing the mounting plate (11), and the partition plate (13) is attached to the step surface (1221).

7. The heat dissipation assembly according to any one of claims 2 to 6, characterized in that: The fan housing (10) further comprises a flow balancing cover (14) fixedly connected to the fan cover (12) and covering the first opening (104) and the second opening (105), and an adapter (15) installed on the flow balancing cover (14), wherein the flow balancing cover (14) has a first hole group (141) connected to the first opening (104) and a second hole group (142) connected to the second opening (105), and two ends of the adapter (15) are respectively covered on the second hole group (142) and a ventilation interlayer used to cover the door assembly (30).

8. A steaming and baking cooking machine, characterized in that: include: An inner liner assembly (40) having an open opening; A door assembly (30) is provided to cover the opening and has a ventilation interlayer; as well as The heat dissipation component according to any one of claims 1 to 7, wherein the mounting plate (11) of the heat dissipation component is mounted on the inner tank component (40), and the second opening (105) of the heat dissipation component is connected to the ventilation interlayer.

9. A heat dissipation method, applicable to the steam-bake cooking machine according to claim 8, wherein the steam-bake cooking machine has a steaming mode and a baking mode, characterized in that: The following steps are involved: When the steam-bake cooking machine is in the steaming mode, the heat dissipation fan (20) is set to rotate only forward; and When the steam-bake cooking machine is in the baking mode, the heat dissipation fan (20) is set to periodically switch between forward rotation and reverse rotation to cool the door assembly (30) and the mounting plate (11) in turn.

10. The heat dissipation method according to claim 9, characterized in that: The following steps are also included: When the steam-bake cooking machine is in a baking mode, detecting the temperature of the ventilation interlayer and the temperature of the fan housing (10); and Determining whether the temperature of the ventilation interlayer is greater than a first preset value; In response to the temperature of the ventilation interlayer being greater than a first preset value, controlling the heat dissipation fan (20) to rotate forward; In response to the temperature of the ventilation interlayer being less than or equal to a first preset value, determining whether the temperature of the fan housing (10) is greater than a second preset value; In response to the temperature of the fan housing (10) being greater than a second preset value, controlling the heat dissipation fan (20) to reverse; and In response to the temperature of the fan housing (10) being less than or equal to a second preset value, the heat dissipation fan (20) is maintained in forward rotation.

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