A cooking apparatus having a steaming function

Abstract

The present application relates to a cooking device with steaming function, which comprises a condensing system with a condensing cavity capable of exchanging heat with steam in the inner container, and an air inlet is formed on the inner container and an air outlet is formed on the exhaust air passage and is in fluid communication with the air inlet. In the present application, when the steaming function is finished, the condensing system works, the remaining steam in the inner container is condensed under the action of the condensing system, at the same time, the exhaust air fan continues to work, and the external air enters the exhaust air passage under the drive of the exhaust air fan. In this way, the mixed gas formed by the external air and the exhaust gas in the inner container is blown into the inner container through the air outlet and the air inlet, which squeezes the steam in the inner container, promotes the condensation of the remaining steam in the inner container and the recondensation of the backflow steam in the exhaust gas, avoids the direct injection of the remaining steam in the inner container to the user when the door is opened after cooking, and also reduces the exhaust amount of steam to avoid the formation of a large amount of condensed water at the air outlet of the exhaust air passage.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cooking equipment, in particular to a cooking equipment with steaming function. BACKGROUND

[0002] The cooking equipment with steaming function such as steam oven utilizes steam to heat food, for example, a heating disc is installed on the bottom wall of the inner container of the steam oven, water is input into the inner container, and the heating disc heats the water to generate steam for heating food. However, after cooking is completed, a large amount of steam remains in the inner container, and if the door is opened at this time, a large amount of steam will directly spray the user, which poses a risk of scalding the user. If the remaining gas is discharged through the exhaust air channel under the driving of the exhaust air fan, a large amount of condensed water will form at the air outlet of the exhaust air channel, and the condensed water will flow to the surface of the machine, which seriously affects the user's experience.

[0003] Condensation is the main way to solve the above problems in the prior art, for example, a Chinese invention patent with patent number ZL 201910254524.6 (publication number CN111759184B) discloses an exhaust structure of a steaming cooking equipment, which includes a mounting plate, a wind guide plate, a centrifugal fan and a condensation cavity. The wind guide plate is covered on the mounting plate to form an exhaust air channel, the centrifugal fan is arranged in the exhaust air channel, the air inlet of the condensation cavity is communicated with the cooking cavity of the steaming cooking equipment through an air pipe, and the air outlet of the condensation cavity can be in fluid communication with the upstream flow formed in the volute cavity of the centrifugal fan. However, the existing condensation method still cannot effectively solve the problem of steam remaining in the inner container, and the problems of direct steam spraying when the door is opened and condensed water remaining at the air outlet of the exhaust air channel still exist. SUMMARY

[0004] The first technical problem to be solved by the present application is to provide a cooking equipment with steaming function which can avoid direct steam spraying to the user when the door is opened after cooking is completed.

[0005] The second technical problem to be solved by the present application is to provide a cooking equipment with steaming function which can avoid direct steam spraying to the user when the door is opened after cooking is completed and can reduce the amount of discharged steam.

[0006] The technical solution adopted by the present application to solve at least one of the above technical problems is as follows: a cooking equipment with steaming function, which comprises an inner container with a front opening and an exhaust port and an exhaust air channel arranged above the inner container and having an exhaust air fan, and the exhaust air channel has an air inlet and an air outlet which are in communication with the outside and in fluid communication with the exhaust port, characterized in that,

[0007] It also includes a condensation system, which comprises a condensation chamber disposed on or inside the inner liner and capable of exchanging heat with the steam in the inner liner. The inner liner has an air inlet, and the exhaust passage has an air outlet in fluid communication with the air inlet. The exhaust passage is also provided with a control component for controlling the communication between the air inlet and the air outlet, or between the air outlet and the air inlet.

[0008] Furthermore, in the steam function state, the aforementioned condensation system does not work, and the air inlet and outlet of the aforementioned exhaust channel are connected; in the steam function end state, the aforementioned condensation system works, and the air inlet and outlet of the aforementioned exhaust channel are connected.

[0009] Furthermore, the condensation chamber is located after the inner liner, and the air inlet is located on the top wall of the inner liner. The airflow entering the inner liner through this air inlet is directed towards the condensation chamber. This allows the airflow entering through the air inlet to better compress the remaining steam in the inner liner towards the condensation chamber, thereby improving the condensation efficiency of the remaining steam in the inner liner.

[0010] Furthermore, the exhaust outlet of the exhaust channel is connected to the air inlet of the inner liner via an air intake channel that slopes downwards towards the aforementioned condensation chamber. This allows the airflow at the air inlet to flow more effectively towards the condensation chamber.

[0011] Furthermore, an upper mounting plate is horizontally arranged above the inner liner. A guide plate covers the upper surface of the upper mounting plate, forming the exhaust channel. The exhaust fan is installed at the air inlet of the exhaust channel, and the air outlet is located on the upper mounting plate. A gap exists between the lower surface of the upper mounting plate and the top surface of the inner liner, through which an air inlet pipe is installed to connect the air outlet and the air inlet. The inner cavity of the air inlet pipe constitutes the air intake channel. This design effectively forms the air intake channel structure and ensures a more stable connection between the air outlet of the exhaust channel and the air inlet of the inner liner.

[0012] Furthermore, the control component is positioned between the air outlet and the vent in the exhaust channel, and this control component is a plate extending horizontally and rotating horizontally.

[0013] In steam function mode, the aforementioned control components extend horizontally and cover the aforementioned air outlet. At this time, the air outlet is closed, and the air inlet of the exhaust channel is connected to the air outlet. The exhaust gas from the inner liner is discharged directly outward through the exhaust channel.

[0014] When the steaming function is finished, the aforementioned control component extends vertically and is positioned between the air outlet and the vent. At this time, the vent is closed, and the air inlet and outlet of the exhaust channel are connected. The exhaust gas from the inner liner and the outside air flow into the inner liner under the drive of the exhaust fan, which promotes the condensation of the remaining steam in the inner liner and the re-condensation of the return steam in the exhaust gas.

[0015] Furthermore, it also includes a drive structure for driving the rotation of the aforementioned control component. This drive structure includes a fluid cavity extending forward and backward, a push rod positioned forward and backward, and a transmission assembly. The rear end of the push rod passes through the fluid cavity, and a vertically extending first partition is fixed to the rear end of the push rod. The first partition is positioned within the fluid cavity and can move back and forth along the fluid cavity. The rear end of the fluid cavity has a first fluid inlet, and the side has a first fluid outlet. One end of the aforementioned control component is equipped with a left-right extending rotating shaft, while the front end of the push rod protrudes from the fluid cavity and is linked to the rotating shaft via the aforementioned transmission assembly.

[0016] In the steaming function mode, the first baffle is positioned between the first fluid inlet and the first fluid outlet, and the first fluid inlet is closed.

[0017] When the steaming function is finished, the first fluid flows into the fluid chamber through the first fluid inlet and pushes the push rod forward through the first partition. The first fluid inlet is connected to the first fluid outlet, and the push rod drives the control component to rotate in the vertical direction through the transmission assembly, thereby opening the air outlet. The air inlet of the exhaust channel is connected to the air outlet.

[0018] Furthermore, a return spring is sleeved at the rear end of the push rod, and this return spring is clamped between the first partition and the front wall of the fluid cavity.

[0019] When the steaming function is finished, the return spring is compressed and the push rod tends to move backward and reset. In this way, when the remaining steam in the inner tank has finished condensing and the first fluid stops flowing into the fluid chamber, the push rod can reset backward under the action of the return spring and close the first fluid inlet again.

[0020] Furthermore, the transmission assembly includes a transmission tooth surface disposed along the length of the exposed end of the push rod and a transmission gear mounted on the rotating shaft, the transmission gear meshing with the transmission tooth surface. Thus, the forward and backward movement of the push rod can drive the control component to rotate via the transmission gear.

[0021] Furthermore, a fluid pipe is provided on the upper surface of the upper mounting plate on one side of the air guide plate. The inner cavity of the fluid pipe constitutes the fluid cavity, and the free end of the rotating shaft extends out of the air guide plate and is equipped with the transmission gear. This allows for a better formation of the fluid cavity structure and enables the transmission gear to be securely mounted on the rotating shaft.

[0022] Furthermore, it also includes a fluid tank for storing the first fluid and a fluid pump for pumping the first fluid from the fluid tank into the fluid chamber through the first fluid inlet. The fluid pump enables the first fluid to enter the fluid chamber at a certain pressure, thereby better pushing the push rod forward.

[0023] Furthermore, the first fluid is water. Water is a common fluid and is highly safe to use in cooking equipment.

[0024] Furthermore, the condensation chamber has a second fluid inlet and a second fluid outlet, the second fluid inlet being in fluid communication with the aforementioned first fluid outlet.

[0025] When the steaming function ends, the first fluid enters the condensation chamber from the fluid chamber and exchanges heat with the steam in the inner liner. In this way, the first fluid, while driving the push rod to move, can simultaneously participate in the condensation of the remaining steam in the inner liner as a heat exchange medium, thus simplifying the water system inside the cooking device.

[0026] Furthermore, the condensation chamber is a layered structure arranged along the rear side wall of the inner liner, with the second fluid inlet located at the upper end and the second fluid outlet located at the lower end. This increases the heat exchange area of ​​the condensation chamber, improves the heat exchange efficiency between cold water and steam, thereby improving the steam condensation efficiency, and allows the first fluid to flow in the condensation chamber without the need for a driving device.

[0027] Furthermore, the upper end of the condensing chamber is provided with a flow inlet chamber extending laterally and sharing a first chamber wall with the condensing chamber. This first chamber wall is vertically oriented and extends laterally. The aforementioned second fluid inlets are spaced apart along the first chamber wall, each inlet being formed by an arrangement of fluid holes. One end of the flow inlet chamber is provided with an inlet port, which is fluidly connected to the first fluid outlet of the aforementioned fluid chamber. This allows the first fluid to be evenly sprayed onto the rear wall of the inner liner of the condensing chamber through the flow inlet chamber, enabling the first fluid to fully exchange heat with the steam in the inner liner and improving the condensation effect on the steam.

[0028] Furthermore, a second baffle extending horizontally is vertically provided in the inlet cavity, dividing it into a front cavity and a rear cavity. The first cavity wall is located in the front cavity, while the inlet is located in the rear cavity. The second baffle is provided with flow holes spaced along its length. The first fluid enters the fluid cavity through the inlet and has a fluid velocity in the left-right direction. The first baffle guides the fluid from the left-right direction to the front-back direction, allowing it to flow to each of the second fluid inlets and be sprayed into the condensation cavity through the fluid holes of each of the second fluid inlets.

[0029] Furthermore, the diameter of each of the flow holes is larger than that of each fluid hole. This pressurizes and accelerates the fluid entering the rear cavity, causing the fluid to be sprayed onto the rear wall of the inner liner at a certain flow rate, further enhancing the condensation effect on the steam in the inner liner.

[0030] Furthermore, the cross-sectional area of ​​the inlet cavity decreases from rear to front, and the top wall of the inlet cavity is inclined downwards along its length from rear to front. This enhances the pressurization and acceleration of the fluid flowing from back to front, and, while ensuring that the longitudinal cross-sectional area of ​​the inlet cavity decreases from rear to front, it also prevents water from adhering to the top of the inlet cavity.

[0031] Furthermore, a heat exchange plate is provided on the back of the inner liner to form the aforementioned condensation cavity. The first cavity wall is located at the upper end of the heat exchange plate, and a long strip-shaped inlet block is provided along the length direction of the first cavity wall. The inlet block is hollow, and its inner cavity constitutes the aforementioned inlet cavity. The lower end of the heat exchange plate is open to form the aforementioned second fluid outlet. This facilitates the provision of a condensation cavity structure on the rear side wall of the inner liner, and also facilitates the provision of an inlet cavity structure on the condensation cavity.

[0032] Furthermore, the inner surface of the heat exchange plate has left-right extending bosses protruding below each second fluid inlet. The top surface of each boss slopes from back to front along its length to form a guide slope, and baffles extending forward and backward are spaced along the length of the guide slope, with each baffle positioned between adjacent second fluid inlets. This allows the first fluid to be sprayed more effectively through each second fluid inlet to the rear wall of the inner liner, preventing mutual interference between the first fluids sprayed from each second fluid inlet.

[0033] Furthermore, it also includes a fluid tank for storing the first fluid, and the third fluid outlet of the fluid tank is in fluid communication with the first fluid inlet, while the third fluid inlet is in fluid communication with the second fluid outlet. In this way, the first fluid enters the fluid chamber through the fluid tank, then enters the condensation chamber from the fluid chamber, and finally flows back to the fluid tank through the condensation chamber, realizing a circulating flow.

[0034] Furthermore, a condenser box is installed on the top surface of the air guide plate. This condenser box has a condensation inlet and a condensation outlet. The condensation inlet is fluidly connected to the exhaust port of the inner liner via an exhaust pipe, while the condensation outlet is connected to the air inlet of the exhaust fan via an air inlet pipe. Building upon the initial condensation in the inner liner's condensation chamber, the re-condensation of the exhaust gas, and the forced-air condensation (by blowing outside air into the inner liner through the exhaust fan and exhaust channel), the condenser box can further condense the vapor in the exhaust gas from the inner liner, minimizing the amount of vapor in the exhaust gas and preventing condensation from forming in the exhaust port of the exhaust channel, thus improving the user experience.

[0035] Compared with the prior art, the advantages of the present invention are as follows: the cooking device of the present invention is provided with a condensation system, which has a condensation chamber that can exchange heat with the steam in the inner pot, and the inner pot is provided with an air inlet and the exhaust channel is provided with an air outlet that is fluidly connected to the air inlet.

[0036] When the steaming function ends, the condensation system operates, causing the remaining steam in the inner pot to condense. Simultaneously, the exhaust fan continues to operate, drawing outside air into the exhaust channel. This mixture of outside air and exhaust gas from the inner pot is then forced into the inner pot through the air outlet and inlet, compressing the steam and promoting the condensation of the remaining steam and the re-condensation of the return steam in the exhaust gas (forming an internal steam circulation between the inner pot and the exhaust channel). This prevents the remaining steam from being directly sprayed at the user when the door is opened after cooking and also reduces the amount of steam discharged, preventing the formation of large amounts of condensate at the exhaust vent. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the cooking device in an embodiment of the present invention;

[0038] Figure 2 for Figure 1 A schematic diagram of the structure from another direction;

[0039] Figure 3 for Figure 1 A structural diagram from another direction;

[0040] Figure 4 for Figure 3 Enlarged view of section A;

[0041] Figure 5 for Figure 1 A structural diagram from another direction (in the steaming function state);

[0042] Figure 6 for Figure 5 A cross-sectional view along the direction aa;

[0043] Figure 7 for Figure 6 Enlarged view of section B;

[0044] Figure 8 for Figure 6 Enlarged view of section C;

[0045] Figure 9 for Figure 5 A sectional view along the bb direction;

[0046] Figure 10 This is a cross-sectional view of the cooking device in the steaming function end state in an embodiment of the present invention;

[0047] Figure 11 This is a cross-sectional view of the cooking device in another direction in the embodiment of the present invention when the steaming function is finished;

[0048] Figure 12 forFigure 10 Enlarged view of section D;

[0049] Figure 13 for Figure 11 Enlarged view of section E in the middle;

[0050] Figure 14 for Figure 11 Enlarged view of section F in the middle;

[0051] Figure 15 This is a schematic diagram of the heat exchange plate in an embodiment of the present invention. Detailed Implementation

[0052] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0053] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this invention can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0054] like Figures 1 to 15 As shown, a cooking appliance with a steaming function includes an inner liner 1 with a front opening and an exhaust port 11, and an exhaust channel 30 disposed on the inner liner 1 and equipped with an exhaust fan 31. The exhaust channel 30 has an air inlet 301 and an air outlet 302 that communicate with the outside and are fluidly connected to the exhaust port 11. In this embodiment, specifically, an upper mounting plate 2 is horizontally disposed on the inner liner 1, and a guide plate 3 is provided on the upper surface of the upper mounting plate 2 to form the exhaust channel 30. The exhaust fan 31 is mounted on the air inlet 301 of the exhaust channel 30.

[0055] Furthermore, it also includes a condensation system 100, which includes a condensation chamber 80 disposed on or inside the inner liner 1 and capable of exchanging heat with the steam in the inner liner 1. The inner liner 1 has an air inlet 12, and the exhaust passage 30 has an air outlet 21 in fluid communication with the air inlet 12. The exhaust passage 30 also includes a control element 7 for controlling the communication between the air inlet 301 and the air outlet 302 or the air outlet 21. In the steam function state, the condensation system 100 is not in operation, and the air inlet 301 and the air outlet 302 of the exhaust passage 30 are in communication. Figure 9 As shown; when the evaporation function is finished, the condensation system 100 operates, and the air inlet 301 of the exhaust channel 30 is connected to the air outlet 21, as shown. Figure 11 and Figure 12 As shown.

[0056] As can be seen from the above, the cooking device of the present invention is provided with a condensation system 100, which has a condensation chamber 80 that can exchange heat with the steam in the inner pot 1, and an air inlet 12 is provided on the inner pot 1 and an air outlet 21 that is in fluid communication with the air inlet 12 is provided on the exhaust channel 30. When the steaming function is finished, the condensation system 100 operates. The remaining steam in the inner liner 1 condenses under the action of the condensation system 100. At the same time, the exhaust fan 31 continues to work, and outside air enters the exhaust channel 30 under the drive of the exhaust fan 31. The mixture of outside air and the gas discharged from the inner liner 1 is then blown into the inner liner 1 through the air outlet 21 and the air inlet 12, compressing the steam in the inner liner 1 and promoting the condensation of the remaining steam in the inner liner 1 as well as the re-condensation of the return steam in the gas discharged from the inner liner 1 (forming an internal steam circulation between the inner liner 1 and the exhaust channel 30). This prevents the remaining steam in the inner liner 1 from being directly sprayed at the user when the door is opened after cooking, and also reduces the amount of steam discharged, preventing a large amount of condensate from forming at the air outlet 302 of the exhaust channel 30.

[0057] Preferably, in this embodiment, the condensing chamber 80 is located after the inner liner 1, and the air inlet 12 is located on the top wall of the inner liner 1. The airflow entering the inner liner 1 through the air inlet 12 is directed towards the condensing chamber 80. This allows the airflow entering through the air inlet 12 to better compress the remaining steam in the inner liner 1 towards the condensing chamber 80, improving the condensation efficiency of the remaining steam in the inner liner 1. More preferably, the outlet 21 of the exhaust channel 30 is connected to the air inlet 12 of the inner liner 1 via an air intake channel 940 that slopes downwards towards the condensing chamber 80, thereby allowing the airflow at the air inlet 12 to flow more effectively towards the condensing chamber 80. Specifically, in this embodiment, the outlet 21 is located on the upper mounting plate 2, and a vertical gap is left between the lower surface of the upper mounting plate 2 and the top surface of the inner liner 1. An air intake pipe 94 is installed in this gap to connect the outlet 21 and the air inlet 12, and the inner cavity of the air intake pipe 94 constitutes the air intake channel 940. This allows for a better formation of the aforementioned air intake channel 940 structure, and enables a more stable connection between the exhaust port 21 of the exhaust channel 30 and the air intake port 12 of the inner liner 1.

[0058] In this embodiment, the control component 7 is disposed between the air outlet 21 and the air outlet 302 of the exhaust channel 30, and the control component 7 is a plate extending horizontally and rotating back and forth. In the steam function state, the control component 7 extends horizontally and covers the air outlet 21. At this time, the air outlet 21 is closed, the air inlet 301 and the air outlet 302 of the exhaust channel 30 are connected, and the exhaust gas from the inner liner 1 is directly discharged outward through the exhaust channel 30, such as... Figure 9 As shown. When the steaming function is finished, the aforementioned control element 7 extends vertically and is positioned between the air outlet 21 and the air outlet 302, as shown. Figure 11 and Figure 12 As shown, at this time, the air outlet 302 is closed, and the air inlet 301 of the exhaust channel 30 is connected to the air outlet 21. The exhaust gas from the inner liner 1 and the outside air flow into the inner liner 1 under the drive of the exhaust fan 31, which promotes the condensation of the remaining steam in the inner liner 1 and the re-condensation of the return steam in the exhaust gas.

[0059] Furthermore, it also includes a drive structure for driving the aforementioned control element 7 to rotate. This drive structure includes a fluid cavity 60 extending forward and backward, a push rod 61 positioned forward and backward, and a transmission assembly 63, such as... Figure 8 and Figure 12As shown. The rear end of the push rod 61 is inserted into the fluid cavity 60, and a vertically extending first partition 611 is fixed to the rear end of the push rod 61. The first partition 611 is disposed in the fluid cavity 60 and can move back and forth along the fluid cavity 60. The rear end of the fluid cavity 60 is provided with a first fluid inlet 601, and the side is provided with a first fluid outlet 602. One end of the control component 7 is equipped with a left-right extending rotating shaft 71, and the front end of the push rod 61 is exposed in the fluid cavity 60 and is linked with the rotating shaft 71 through the transmission component 63. In the steaming function state, the first partition 611 is disposed between the first fluid inlet 601 and the first fluid outlet 602, and the first fluid inlet 601 is closed, as... Figure 8 As shown; when the steaming function is finished, the first fluid flows into the fluid chamber 60 through the first fluid inlet 601 and pushes the push rod 61 forward through the first partition 611. The first fluid inlet 601 is connected to the first fluid outlet 602, and the push rod 61 drives the control component 7 to rotate vertically through the transmission assembly 63, thereby opening the air outlet 21. The air inlet 301 of the exhaust channel 30 is connected to the air outlet 21, as shown. Figure 12 As shown. Preferably, a return spring 62 is sleeved at the rear end of the push rod 61, and the return spring 62 is clamped between the first partition 611 and the front wall of the fluid cavity 60. When the steaming function ends, the return spring 62 is compressed, causing the push rod 61 to tend to move backward and reset. Thus, when the remaining steam in the inner liner 1 has finished condensing and the first fluid stops flowing into the fluid cavity 60, the push rod 61 can reset backward under the action of the return spring 62 and close the first fluid inlet 601 again.

[0060] In this embodiment, specifically, the transmission assembly 63 includes a transmission tooth surface 631 disposed along the length direction on the exposed end of the push rod 61 and a transmission gear 632 mounted on the rotating shaft 71. The transmission gear 632 meshes with the transmission tooth surface 631, so that the forward and backward movement of the push rod 61 can drive the control component 7 to rotate through the transmission gear 632. In addition, a fluid pipe 6 is disposed on the upper surface of the upper mounting plate 2 on one side of the air guide plate 3. The inner cavity of the fluid pipe 6 forms the fluid cavity 60, and the free end of the rotating shaft 71 extends out of the air guide plate 3 and is mounted with the transmission gear 632, thereby forming the fluid cavity 60 structure well and allowing the transmission gear 632 to be stably mounted on the rotating shaft 71.

[0061] Furthermore, such as Figure 2 and Figure 7As shown, the condensing chamber 80 has a second fluid inlet 801 and a second fluid outlet 802, with the second fluid inlet 801 in fluid communication with the first fluid outlet 602. When the steaming function is finished, the first fluid enters the condensing chamber 80 from the fluid chamber 60 and exchanges heat with the steam in the inner liner 1. In this way, the first fluid, while driving the push rod 61 to move, can simultaneously participate as a heat exchange medium in the condensation of the remaining steam in the inner liner 1, simplifying the water system inside the cooking equipment.

[0062] Preferably, in this embodiment, as Figure 6 As shown, the aforementioned condensing chamber 80 is a layered structure arranged along the rear side wall of the inner liner 1. The second fluid inlet 801 is located at the upper end of the condensing chamber 80, and the second fluid outlet 802 is located at the lower end of the condensing chamber 80. This increases the heat exchange area of ​​the condensing chamber 80, improves the heat exchange efficiency between cold water and steam, thereby improving the steam condensation efficiency. Furthermore, the flow of the first fluid in the condensing chamber 80 can be achieved without the need for a driving device. Further, as... Figure 7 and Figure 14 As shown, the upper end of the aforementioned condensing chamber 80 is provided with an inlet chamber 90 extending laterally and sharing a first chamber wall 91 with the condensing chamber 80. The first chamber wall 91 is vertically arranged and extends laterally. The aforementioned second fluid inlets 801 are spaced apart along the first chamber wall 91, and each second fluid inlet 801 is formed by fluid holes 911. One end of the inlet chamber 90 is provided with an inlet port 93, which is in fluid communication with the first fluid outlet 602 of the aforementioned fluid chamber 60. This allows the first fluid to be evenly sprayed onto the rear wall of the inner liner 1 of the condensing chamber 80 through the inlet chamber 90, and the first fluid to fully exchange heat with the steam in the inner liner 1, thereby improving the condensation effect of the steam. Furthermore, the aforementioned inlet cavity 90 is vertically separated by a second partition 92 extending laterally, which divides the cavity into a front cavity 901 and a rear cavity 902. The first cavity wall 91 is located in the front cavity 901, while the inlet 93 is located in the rear cavity 902. The second partition 92 has flow holes 921 spaced along its length. The first fluid enters the fluid cavity 60 through the inlet 93 and has a lateral velocity. The first partition 611 guides the fluid from the lateral direction to the longitudinal direction, directing it to each of the second fluid inlets 801, and then spraying it into the condensation cavity 80 through the fluid holes 911 of each of the second fluid inlets 801.

[0063] Preferably, the diameter of each of the aforementioned flow holes 921 is larger than that of each fluid hole 911. This provides a pressurization and acceleration effect on the fluid entering the rear cavity 902, causing the fluid to be sprayed onto the rear side wall of the inner liner 1 at a certain flow rate, further enhancing the condensation effect on the steam in the inner liner 1. The cross-sectional area of ​​the aforementioned inlet cavity 90 decreases from rear to front, and the top wall of the inlet cavity 90 is inclined downwards along its length from rear to front. This enhances the pressurization and acceleration effect on the fluid flowing from back to front, and, while ensuring that the longitudinal cross-sectional area of ​​the inlet cavity decreases from rear to front, it also prevents water from dripping from the top of the inlet cavity 90.

[0064] Specifically, in this embodiment, a heat exchange plate 8 is provided on the back of the inner liner 1 to form the condensation cavity 80, and the first cavity wall 91 is located at the upper end of the heat exchange plate 8. A long strip-shaped inlet block 9 is provided along the length of the first cavity wall 91. The inlet block 9 is hollow, and its inner cavity forms the inlet cavity 90. The lower end of the heat exchange plate 8 is open to form the second fluid outlet 802. This facilitates the provision of the condensation cavity 80 structure on the rear side wall of the inner liner 1, and also facilitates the provision of the inlet cavity 90 structure on the condensation cavity 80. Preferably, the heat exchange plate 8 and the inlet block 9 are integral parts and are made of metal.

[0065] Furthermore, a heat exchange groove 81 is recessed on the inner surface of the heat exchange plate 8, which, together with the back of the inner liner 1, forms the condensation chamber 80. A left-right extending boss 82 protrudes from the upper end of the end face of the heat exchange groove 81 below each second fluid inlet 801. The top surface of the boss 82 slopes from back to front along its length to form a guide slope 820, and baffles 821 extending forward and backward are spaced along the length of the guide slope 820, with each baffle 821 positioned between adjacent second fluid inlets 801. This allows the first fluid to be sprayed more effectively through each second fluid inlet 801 onto the rear wall of the inner liner 1, preventing mutual interference between the first fluids sprayed from each second fluid inlet 801. Furthermore, the lower sidewall of the heat exchange tank 81 is inclined from both ends towards the middle, and the second fluid outlet 802 is located at the lowest point of this lower sidewall. This allows the first fluid, after heat exchange, to flow out of the condensing chamber 80 efficiently, improving heat exchange efficiency and thus improving the condensation efficiency of steam. In this embodiment, a pressure relief hole 83 is provided at the upper end of the heat exchange plate. This pressure relief hole 83 is used to discharge excess gas in the condensing chamber 80, such as... Figure 2 As shown.

[0066] In this embodiment, as Figure 2 , Figure 10 as well as Figure 11As shown, the system also includes a fluid tank 5 for storing the first fluid and a fluid pump 53 (specifically a water pump in this embodiment) for pumping the first fluid from the fluid tank 5 into the fluid cavity 60 through the first fluid inlet 601. The fluid pump 53 enables the first fluid to enter the fluid cavity 60 at a certain pressure, thereby better pushing the push rod 61 forward. Specifically, the fluid tank 5 has a third fluid outlet 52, the fluid pump 53 is installed in the fluid tank 5, the inlet of the fluid pump 53 communicates with the inner cavity of the fluid tank 5, and the outlet is connected to a first flow pipe 101. The first flow pipe 101 passes through the fluid tank 5 through the third fluid outlet 52 and is connected to the first fluid inlet 601 of the fluid pipe 6, while the second fluid inlet 801 of the fluid pipe 6 is connected to the inlet 93 of the inlet cavity 90 through the second flow pipe 102. Furthermore, the fluid tank 5 is located on the rear side of the inner liner 1, and a third fluid inlet 51 and a third fluid outlet 52 are respectively opened on the top wall of the fluid tank 5, with the third fluid inlet 51 and the second fluid outlet 802 arranged vertically opposite each other. In this way, the first fluid enters the fluid chamber 60 through the fluid tank 5, then enters the condensation chamber 80 from the fluid chamber 60, and finally flows back to the fluid tank 5 through the condensation chamber 80, achieving a circulating flow. Preferably, the first fluid is water, which is a common fluid and has high safety when used in cooking equipment. Simultaneously, the water temperature can be increased through heat exchange with steam, and if the water after heat exchange is used to generate steam, cooking efficiency can be improved.

[0067] Furthermore, in this embodiment, as Figure 2 As shown, a condenser box 4 is installed on the top surface of the aforementioned air guide plate 3. The condenser box 4 has a condenser inlet 41 and a condenser outlet 42. The condenser inlet 41 is fluidly connected to the exhaust port 11 of the inner liner 1 through the exhaust pipe 103, while the condenser outlet 42 is connected to the air inlet hole on the aforementioned exhaust fan 31 through the air inlet pipe. Based on the initial condensation of the condenser chamber 80 of the inner liner 1, the re-condensation of the exhaust gas return, and the forced-air condensation (the outside air is blown into the inner liner 1 through the exhaust fan 31 and the exhaust channel 30), the condenser box 4 can further condense the vapor in the exhaust gas of the inner liner 1, minimizing the amount of vapor in the exhaust gas and preventing the formation of condensate in the exhaust port 11 of the exhaust channel 30, thus improving the user experience.

[0068] The working process of this invention is as follows:

[0069] The condensing system 100 of this invention includes a condensing chamber 80, an inlet chamber 90, a fluid tank 5, and a drive structure. In steam function mode, the condensing system 100 is closed (the fluid pump 53 is not working), the first fluid inlet 601 of the fluid chamber 60 is closed, and the control element 7 is in a horizontal position, thus closing the exhaust port 21 of the exhaust channel 30. During cooking, excess steam in the inner pot 1 is discharged through the exhaust port 11 and the exhaust channel 30.

[0070] When the steaming function is finished, the condensation system 100 is turned on (fluid pump 53 operates). Fluid pump 53 pumps the first fluid from fluid tank 5 into fluid chamber 60. Push rod 61 moves forward, connecting the first fluid inlet 601 to the second fluid outlet 802. Transmission component 63 drives control component 7, which rotates from a horizontal to a vertical position. Exhaust channel 30 outlet 302 closes, and inlet 301 connects to outlet 21. Gas in exhaust channel 30 enters inner liner 1 through outlet 21 and inlet 12. Simultaneously, the first fluid enters condensation chamber 80 and exchanges heat with the remaining steam in inner liner 1. The steam condenses, and the condensed gas and return steam, under the compression of the blown-in gas, enter condensation box 4 through exhaust port 11. The re-condensed gas enters exhaust fan 31, mixes with outside air entering exhaust fan 31, enters exhaust channel 30, and then enters inner liner 1 for re-condensation.

[0071] The cycle continues until the steam in the inner liner 1 is fully condensed. At this point, the condensation system 100 stops working (the fluid pump 53 stops working), the push rod 61 is reset by the action of the return spring 62, the first fluid inlet 601 is closed, the control component 7 rotates to open the air outlet 302 and close the air outlet 21. Under the action of the exhaust fan 31, the gas (with low steam content) in the inner liner 1 after being fully condensed is discharged through the exhaust channel 30.

[0072] The term "fluid connectivity" as used in this invention refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. This third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber that allows fluid to flow through, or a combination of the above.

Claims

1. A cooking apparatus with steaming function, comprising an inner container (1) with a front opening and an exhaust port (11) and an exhaust passage (30) provided above the inner container (1) and having an exhaust fan (31), and the exhaust passage (30) has an air inlet port (301) and an air outlet port (302) respectively communicating with the outside and fluidly connected with the exhaust port (11), characterized in that, it further comprises a condensing system (100) comprising a condensing cavity (80) provided above or in the inner container (1) and capable of exchanging heat with steam in the inner container (1), and the inner container (1) is provided with an air inlet port (12), and the exhaust passage (30) is provided with an air outlet port (21) fluidly connected with the air inlet port (12), and the exhaust passage (30) is further provided with a control member (7) for controlling the air inlet port (301) to communicate with one of the air outlet port (302) and the air outlet port (21), and, in the steaming function state, the condensing system (100) is not in operation, the air inlet port (301) of the exhaust passage (30) communicates with the air outlet port (302), and the air outlet port (21) is closed; in the end state of the steaming function, the condensing system (100) is in operation, the air inlet port (301) of the exhaust passage (30) communicates with the air outlet port (21), and the air outlet port (302) is closed; the condensing cavity (80) is provided behind the inner container (1), the air inlet port (12) is provided on the top wall of the inner container (1), and the airflow entering the inner container (1) from the air inlet port (12) is directed towards the condensing cavity (80); the air outlet port (21) of the exhaust passage (30) and the air inlet port (12) of the inner container (1) are connected by an air inlet flow channel (940) inclined from top to bottom towards the condensing cavity (80). an upper mounting plate (2) is horizontally provided above the inner container (1), a wind deflector (3) is provided on the upper surface of the upper mounting plate (2) to enclose the exhaust passage (30), the exhaust fan (31) is mounted on the air inlet port (301) of the exhaust passage (30), the air outlet port (21) is provided on the upper mounting plate (2), and a gap is left between the lower surface of the upper mounting plate (2) and the top surface of the inner container (1), an air inlet pipe (94) for connecting the air outlet port (21) and the air inlet port (12) is mounted in the gap, and the inner cavity of the air inlet pipe (94) constitutes the air inlet flow channel (940).

2. The cooking apparatus having a steaming function as claimed in claim 1, wherein, the control member (7) is provided between the air outlet port (21) and the air outlet port (302) of the exhaust passage (30), and the control member (7) is a plate member extending left and right and rotating front and back, 3. The cooking apparatus having a steaming function as claimed in claim 2, wherein, in the steaming function state, the control member (7) extends horizontally and shields the air outlet port (21), and in the end state of the steaming function, the control member (7) extends vertically and is arranged between the air outlet port (21) and the air outlet port (302). ​ 4. The cooking apparatus having a steaming function as claimed in claim 3, wherein The driving structure for driving the control member (7) to rotate comprises a fluid cavity (60) extending front-to-back, a push rod (61) arranged front-to-back, and a transmission assembly (63), the rear end of the push rod (61) penetrates into the fluid cavity (60), and the rear end of the push rod (61) is fixed with a vertically extending first partition plate (611), the first partition plate (611) is arranged in the fluid cavity (60) and can move back and forth along the length direction of the fluid cavity (60), the rear end of the fluid cavity (60) is provided with a first fluid inlet (601), and the side surface is provided with a first fluid outlet (602), one end of the control member (7) is provided with a left-and-right extending rotating shaft (71), and the front end of the push rod (61) is exposed to the fluid cavity (60) and is connected with the rotating shaft (71) through the transmission assembly (63), In the steam function state, the first partition plate (611) is arranged between the first fluid inlet (601) and the first fluid outlet (602), In the end state of the steam function, the first fluid flows into the fluid cavity (60) through the first fluid inlet (601) and pushes the push rod (61) to move forward through the first partition plate (611), the first fluid inlet (601) is communicated with the first fluid outlet (602), and the push rod (61) drives the control member (7) to rotate in the vertical direction through the transmission assembly (63).

5. The cooking apparatus having a steaming function as claimed in claim 4, wherein The rear end of the push rod (61) is sleeved with a reset spring (62), the reset spring (62) is clamped between the first partition plate (611) and the front cavity wall of the fluid cavity (60), In the end state of the steam function, the reset spring (62) is compressed and makes the push rod (61) have a tendency to move backward to reset.

6. The cooking apparatus having a steaming function as claimed in claim 4, wherein, The transmission assembly (63) comprises a transmission tooth surface (631) arranged on the exposed end of the push rod (61) in the length direction and a transmission gear (632) arranged on the rotating shaft (71), and the transmission gear (632) is engaged with the transmission tooth surface (631).

7. The cooking apparatus having a steaming function as claimed in claim 6, wherein, The upper surface of the upper mounting plate (2) is provided with a fluid pipe (6) on one side of the air baffle (3), the inner cavity of the fluid pipe (6) forms the fluid cavity (60), and the free end of the rotating shaft (71) penetrates out of the air baffle (3) and is provided with the transmission gear (632).

8. The cooking apparatus having a steaming function as claimed in claim 4, wherein, The fluid tank (5) for storing the first fluid and the fluid pump (53) for pumping the first fluid in the fluid tank (5) into the fluid cavity (60) through the first fluid inlet (601) are further included.

9. The cooking apparatus having a steaming function as claimed in claim 8, wherein, The first fluid is water.

10. The cooking apparatus having a steaming function as claimed in claim 4, wherein, The condensing cavity (80) is respectively provided with a second fluid inlet (801) and a second fluid outlet (802), the second fluid inlet (801) is in fluid communication with the first fluid outlet (602), In the end state of the steam function, the first fluid enters the condensing cavity (80) from the fluid cavity (60) and exchanges heat with the steam in the inner container (1).

11. The cooking apparatus having a steaming function as claimed in claim 10, wherein, The condensing cavity (80) is a layered structure arranged along the rear sidewall of the inner container (1), and the second fluid inlet (801) is arranged at the upper end of the condensing cavity (80), and the second fluid outlet (802) is arranged at the lower end of the condensing cavity (80).

12. The cooking apparatus having a steaming function as claimed in claim 11, wherein, The upper end of the condensing cavity (80) is provided with an inlet cavity (90) extending left and right and sharing a first cavity wall (91) with the condensing cavity (80), and the first cavity wall (91) is vertically arranged and extends left and right, and the second fluid inlet (801) is arranged left and right along the first cavity wall (91), and each second fluid inlet (801) is arranged by fluid holes (911), and one end of the inlet cavity (90) is provided with an inlet port (93), which is in fluid communication with the first fluid outlet (602) of the fluid cavity (60).

13. The cooking apparatus having a steaming function as claimed in claim 12, wherein, The inlet cavity (90) is vertically provided with a second partition (92) extending left and right, and is divided into a front cavity (901) and a rear cavity (902) by the second partition (92), and the first cavity wall (91) is located in the front cavity (901), and the inlet port (93) is located in the rear cavity (902), and the second partition (92) is provided with flow holes (921) spaced apart along the length direction.

14. The cooking apparatus having a steaming function as claimed in claim 13, wherein, The diameter of each flow hole (921) is larger than that of each fluid hole (911).

15. The cooking apparatus having a steaming function as claimed in claim 13, wherein, The cross-sectional area of the inlet cavity (90) decreases from back to front, and the cavity wall at the top of the inlet cavity (90) is inclined downward along the length direction from back to front.

16. The cooking apparatus having a steaming function as claimed in claim 12, wherein, The back of the inner container (1) is covered with a heat exchange plate (8) to form the condensing cavity (80), the first cavity wall (91) is located at the upper end of the heat exchange plate (8), and the first cavity wall (91) is provided with a long strip-shaped inlet block (9) along the length direction, the inlet block (9) is hollow and its inner cavity forms the inlet cavity (90), and the lower end of the heat exchange plate (8) is open to form the second fluid outlet (802).

17. The cooking apparatus having a steaming function as claimed in claim 16, wherein, The inner surface of the heat exchange plate (8) is provided with a left and right extending boss (82) below each second fluid inlet (801), the top surface of the boss (82) is inclined from back to front along the length direction to form a flow guide slope (820), and the flow guide slope (820) is provided with front and rear extending flow baffles (821) spaced apart along the length direction, and each flow baffle (821) is arranged between adjacent second fluid inlets (801).

18. The cooking apparatus having a steaming function as claimed in claim 10, wherein, The condensing system (100) further comprises a fluid tank (5) for storing the first fluid, and the third fluid outlet (52) of the fluid tank (5) is in fluid communication with the first fluid inlet (601), and the third fluid inlet (51) is in fluid communication with the second fluid outlet (802).

19. The cooking apparatus having a steaming function as claimed in claim 2, wherein, The top surface of the air deflector (3) is provided with a condensing box (4) having a condensing inlet (41) and a condensing outlet (42), respectively, wherein the condensing inlet (41) is in fluid communication with the exhaust port (11) of the inner container (1) through an exhaust pipe (103), and the condensing outlet (42) is in communication with the air inlet hole of the exhaust fan (31) through an air inlet pipe (95).

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