Cooking utensil

Abstract

The utility model provides a cooking utensil which comprises a utensil body, a cooking cavity and an exhaust air duct are arranged in the utensil body, a first opening and a second opening are formed in the utensil body, and the exhaust air duct communicates with the first opening and the second opening; the heat exchange structure is arranged on the appliance body, the heat exchange structure comprises a heat exchange pipe and fins, the heat exchange pipe is provided with an inlet and an outlet, the outlet is communicated with the second opening, the fins are arranged on the part, located between the inlet and the outlet, of the heat exchange pipe, and the fins are located in the exhaust air duct; the exhaust pipe is connected with the cooking cavity and the inlet. According to the cooking utensil, the structure of the cooking utensil is reasonably arranged, the temperature of exhausted gas of the cooking utensil is reduced, the situation that the temperature of the gas exhausted by the cooking utensil is too high, and people are burnt is avoided, and the use performance and market competitiveness of products are improved.

Description

Technical Field

[0001] The present application relates to the technical field of cooking appliances, and in particular, to a cooking appliance. Background Art

[0002] With the improvement of people's living standards, steam ovens have gradually become popular and are widely used in people's daily lives. In related technologies, a steam oven has an exhaust structure to discharge excess steam in the cooking cavity of the steam oven, so that the pressure in the cooking cavity reaches equilibrium, so as to prevent the excessive pressure in the cooking cavity from affecting the performance and normal use of the whole machine. However, the exhaust structure is not reasonably arranged, and the discharged gas has a high temperature, which poses a safety hazard and will bring a bad experience to users. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] For this reason, the present application proposes a cooking appliance.

[0005] In view of this, the present application provides a cooking appliance, including: an appliance body, a cooking cavity and an exhaust air duct are arranged in the appliance body, a first opening and a second opening are arranged on the appliance body, and the exhaust air duct communicates with the first opening and the second opening; a heat exchange structure is arranged on the appliance body, the heat exchange structure includes a heat exchange tube and fins, the heat exchange tube is provided with an inlet and an outlet, the outlet communicates with the second opening, the fins are arranged on the part of the heat exchange tube between the inlet and the outlet, and the fins are located in the exhaust air duct; an exhaust pipe, the exhaust pipe connects the cooking cavity and the inlet.

[0006] The cooking appliance provided by the present application includes an appliance body, a heat exchange structure and an exhaust pipe.

[0007] A cooking cavity is arranged in the appliance body, and the cooking cavity is used for accommodating food materials.

[0008] An exhaust air duct is further arranged in the appliance body, and the fins of the heat exchange structure are arranged in the exhaust air duct. A first opening and a second opening are arranged on the appliance body, and the exhaust air duct communicates with the first opening and the second opening. The gas in the environment flows into the exhaust air duct through the first opening, and flows out of the appliance body through the second opening after passing through the fins of the heat exchange structure.

[0009] Further, the heat exchange structure includes a heat exchange tube and fins, the heat exchange tube is provided with an inlet and an outlet, the exhaust pipe connects the cooking cavity and the inlet of the heat exchange tube, and the fins are located in the exhaust air duct.

[0010] Specifically, when the cooking appliance starts the steam mode, the high-temperature steam generated by the steam generator of the cooking appliance enters the cooking cavity, thereby increasing or maintaining the temperature in the cooking cavity to cook the food located in the cooking cavity. When the steam generator works, steam will be continuously delivered into the cooking cavity, resulting in an increase in the pressure in the cooking cavity. In order to balance the pressure in the cooking cavity and avoid potential hazards caused by excessive pressure, part of the steam will be discharged through the exhaust pipe to achieve the function of pressure relief.

[0011] Furthermore, the gas discharged from the exhaust pipe enters the inlet of the heat exchange pipe. When the gas flows through the heat exchange pipe, the fins and the gas in the exhaust air duct work together to reduce the temperature of the gas, so that the temperature of the gas discharged from the outlet of the heat exchange structure is much lower than the temperature of the gas entering the inlet of the heat exchange structure. That is to say, the temperature of the gas after heat exchange by the heat exchange structure drops rapidly, and then is discharged from the cooking appliance through the outlet of the heat exchange pipe. Optionally, the outlet of the heat exchange pipe is located in the exhaust air duct. In this way, the gas after heat exchange by the fins is discharged into the exhaust air duct through the outlet of the heat exchange pipe and is discharged from the cooking appliance through the second opening. Optionally, the outlet of the heat exchange pipe is located outside the exhaust air duct, and the outlet of the heat exchange pipe is connected to the second opening. That is to say, the gas after heat exchange by the fins is discharged towards the second opening through the outlet of the heat exchange pipe and is discharged from the cooking appliance through the second opening.

[0012] The present application reasonably arranges the structure of the cooking appliance, reduces the temperature of the externally discharged gas of the cooking appliance, avoids the gas discharged from the cooking appliance being too hot to burn people, and improves the use performance and market competitiveness of the product.

[0013] It can be understood that the heat exchange pipe is a hollow structure, and the gas flows from the inlet of the heat exchange pipe to the outlet of the heat exchange pipe. The fins are arranged on the part of the heat exchange pipe between the inlet and the outlet. That is to say, the cooperation structure of the fins, the inlet of the heat exchange pipe and the outlet of the heat exchange pipe is defined. The gas flowing into the heat exchange pipe through the inlet will flow towards the outlet of the heat exchange pipe only after exchanging heat with the fins. The fins increase the heat exchange area and are more conducive to the gas to dissipate heat.

[0014] According to the cooking appliance of the present application described above, it may further have the following additional technical features:

[0015] In some embodiments, optionally, along the height direction of the cooking appliance, the exhaust air duct is located above the cooking cavity.

[0016] In this embodiment, the cooperation structure between the cooking cavity and the exhaust air duct is further defined.

[0017] Specifically, along the height direction of the cooking appliance, the exhaust air duct is located above the cooking cavity.

[0018] In some embodiments, optionally, at least a portion of the heat exchange tube is inclined, and the inlet is closer to the top wall of the cooking cavity than the outlet.

[0019] In this embodiment, the structure of the heat exchange tube is further defined.

[0020] Specifically, at least a portion of the heat exchange tube is inclined. That is, a portion of the heat exchange tube is inclined, or the entire heat exchange tube extends obliquely.

[0021] The inlet is closer to the top wall of the cooking cavity than the outlet. That is, the distance from the side of the inlet facing the cooking cavity to the top wall of the cooking cavity is less than the distance from the side of the outlet facing the cooking cavity to the top wall of the cooking cavity.

[0022] When the gas at a higher temperature flows through the heat exchange structure, part of the gas will condense into water and adhere to the inner wall of the heat exchange tube. Since at least a portion of the heat exchange tube is inclined and the distance from the inlet to the cooking cavity is less than the distance from the outlet to the cooking cavity, the condensed water will flow along the inner wall of the heat exchange tube towards the inlet and then flow back into the cooking cavity through the exhaust pipe. In this way, it is possible to prevent the condensed water from being discharged from the outlet of the heat exchange tube, which is beneficial to improving the performance of the product.

[0023] In some embodiments, optionally, the outlet of the heat exchange tube is located in the exhaust air duct, one end of the heat exchange tube is provided with an inlet, the inner wall of the heat exchange tube is provided with an outlet, and a portion of the heat exchange tube is located between the outlet and the top wall of the cooking cavity.

[0024] In this embodiment, the structure of the heat exchange tube is further defined.

[0025] Specifically, the outlet of the heat exchange tube is located in the exhaust air duct, one end of the heat exchange tube is provided with an inlet, and the inner wall of the heat exchange tube is provided with an outlet.

[0026] Wherein, a portion of the heat exchange tube is located between the outlet and the top wall of the cooking cavity, that is, the minimum distance from a point on the inner wall of the outlet to the top wall of the cooking cavity is greater than the minimum distance from a point on the inner wall of the heat exchange tube to the top wall of the cooking cavity.

[0027] The portion of the heat exchange tube located between the outlet and the top wall of the cooking cavity functions to collect the condensed water, which can prevent the condensed water from being discharged into the exhaust air duct through the outlet, and further prevent the condensed water from being discharged from the second opening of the appliance body, which is beneficial to improving the performance of the product.

[0028] In some embodiments, optionally, the number of fins is multiple, and the multiple fins are arranged in the direction from the inlet to the outlet.

[0029] In this embodiment, the composition of the heat exchange structure is further defined.

[0030] Specifically, the number of fins is multiple, and the multiple fins are arranged in the direction from the inlet to the outlet.

[0031] This setting increases the heat exchange area of the heat exchange structure, which is beneficial to accelerating the heat dissipation, and further beneficial to further reducing the temperature of the gas flowing out of the cooking appliance through the second opening.

[0032] In some embodiments, optionally, the heat exchange tube is a straight tube; or the heat exchange tube is arranged in a bent manner.

[0033] In this embodiment, the shape of the heat exchange tube is further defined.

[0034] Specifically, the heat exchange tube is a straight tube.

[0035] Specifically, the heat exchange tube is arranged in a bent manner. This setting is beneficial to extending the length of the heat exchange tube while reasonably utilizing the internal space of the exhaust air duct, and further beneficial to increasing the heat exchange area of the heat exchange structure, giving the gas sufficient heat exchange time, and being beneficial to improving the heat exchange effect.

[0036] In some embodiments, optionally, when the heat exchange tube is arranged in a bent manner, the heat exchange tube includes a first tube section, a second tube section and an arc section. The first tube section and the second tube section are opposite and spaced apart, the arc section is connected between the first tube section and the second tube section, the first tube section is provided with an inlet, the second tube section is provided with an outlet, and the fins are arranged on the first tube section.

[0037] In this embodiment, the shape of the heat exchange tube is further defined.

[0038] Specifically, when the heat exchange tube is arranged in a bent manner, the heat exchange tube includes a first tube section, a second tube section and an arc section. The first tube section and the second tube section are opposite and spaced apart, the arc section is connected between the first tube section and the second tube section. That is, the first tube section, the second tube section and the arc section are in a U shape.

[0039] Specifically, the first tube section is provided with an inlet, the second tube section is provided with an outlet, and the fins are arranged on the first tube section.

[0040] This setting is beneficial to extending the length of the heat exchange tube while reasonably utilizing the internal space of the appliance body, and further beneficial to increasing the heat exchange area of the heat exchange structure, giving the gas sufficient heat exchange time, and being beneficial to improving the heat exchange effect.

[0041] In some embodiments, optionally, the cooking appliance further includes: a blower, which is arranged in the exhaust air duct, and the blower is located between the first opening and the fins. The blower has a first air outlet and a second air outlet. The first air outlet communicates with the first opening, and the second air outlet communicates with the second opening.

[0042] In this embodiment, the cooking appliance further includes a blower. The blower is disposed in the exhaust air duct. The blower has a first air outlet and a second air outlet. The first air outlet is communicated with the first opening, and the second air outlet is communicated with the second opening. The blower is located between the first opening and the fins. In this way, when the blower operates, the gas in the environment flows through the first opening into the exhaust air duct, and flows out of the appliance body through the second opening after passing through the fins of the heat exchange structure.

[0043] Further, the gas discharged from the exhaust pipe enters the inlet of the heat exchange tube. When the gas flows through the heat exchange tube, the fins and the blower act together to reduce the temperature of the gas, so that the temperature of the gas discharged from the outlet of the heat exchange structure is much lower than the temperature of the gas entering the inlet of the heat exchange structure.

[0044] The operation of the blower can accelerate the gas flow to further enhance the heat exchange effect of the heat exchange structure, thereby further reducing the temperature of the gas discharged from the cooking appliance.

[0045] It can be understood that the blower is located between the first opening and the fins of the heat exchange structure, that is, the blower is closer to the first opening than the fins. That is, it is ensured that the gas in the environment effectively flows through the first opening to the fins, which can ensure the effective contact area and contact frequency between the fins and the gas, and further ensure the heat exchange effect of the heat exchange structure.

[0046] In some embodiments, optionally, the appliance body further includes: a partition plate disposed in the exhaust air duct. The partition plate and the duct wall of the exhaust air duct enclose a first air duct and a second air duct. The blower is disposed between the first air duct and the second air duct, and the fins are disposed in the first air duct; the first air duct is communicated with the second air outlet and the second opening, and the second air duct is communicated with the first air outlet and the second opening.

[0047] In this embodiment, the structure of the appliance body is further defined.

[0048] Specifically, the appliance body further includes a partition plate disposed in the exhaust air duct.

[0049] The partition plate and the duct wall of the exhaust air duct enclose a first air duct and a second air duct. The first air duct is communicated with the second air outlet of the blower and the second opening. The second air duct is communicated with the first air outlet of the blower and the second opening.

[0050] Wherein, the blower is disposed between the first air duct and the second air duct, and the fins are disposed in the first air duct.

[0051] When the fan is working, a part of the gas in the environment flows through the first opening into the first air duct, passes through the fins of the heat exchange structure, and then flows out of the appliance body through the second opening. Another part of the gas in the environment flows through the second opening into the second air duct, passes through the fins of the heat exchange structure, and then flows out of the appliance body through the second opening. This setting changes the air flow path in the exhaust air duct, increases the air inlet area of the exhaust air duct, and the air flows at different positions of the cooking appliance can enter the exhaust air duct simultaneously, which is beneficial to improving the heat exchange effect of the heat exchange structure.

[0052] In some embodiments, optionally, along the height direction of the cooking appliance, the first air duct is located above the second air duct.

[0053] In this embodiment, the cooperation structure of the first air duct and the second air duct is further defined.

[0054] Specifically, along the height direction of the cooking appliance, the first air duct is located above the second air duct.

[0055] This setting has the function of separating the gas discharged through the first air duct and the gas entering the exhaust air duct through the second air duct, reducing the air flow rate of the gas discharged through the first air duct flowing to the second air duct, and taking into account the heat exchange efficiency of the cooking appliance while increasing the air intake.

[0056] In some embodiments, optionally, the first air duct includes a first sub-section and a second sub-section, and the first sub-section is located between the fan and the second sub-section; along the direction from the fan to the second opening, the cross-sectional area of the first sub-section gradually decreases, and the cross-sectional area of the second sub-section remains unchanged.

[0057] In this embodiment, the structure of the first air duct is further defined.

[0058] The first air duct includes a first sub-section and a second sub-section, and the first sub-section is located between the fan and the second sub-section.

[0059] The gas flowing through the first opening into the exhaust air duct flows through the first sub-section and the second sub-section in sequence.

[0060] Among them, along the direction from the fan to the second opening, the cross-sectional area of the first sub-section gradually decreases, and the cross-sectional area of the second sub-section remains unchanged.

[0061] Section the first sub-section along the direction perpendicular to the extension direction of the first sub-section. In the section, the area of the region surrounded by the contour line of the first sub-section is the cross-sectional area of the first sub-section.

[0062] Section the second sub-section along the direction perpendicular to the extension direction of the second sub-section. In the section, the area of the region surrounded by the contour line of the second sub-section is the cross-sectional area of the second sub-section.

[0063] The gradually decreasing cross-sectional area of the first subsection and the unchanged cross-sectional area of the second subsection are combined to define the flow path of the gas discharged from the cooking utensil through the second opening, and the gas flows through the first air duct to the second opening and is blown out in parallel along the extension direction of the second subsection. This arrangement can further prevent the gas discharged from the first air duct from being sucked into the second air duct, providing structural support for ensuring the heat exchange effect of the cooking utensil.

[0064] In addition, the flow cross-sectional area of the first sub-segment gradually decreases, which has a pressurizing effect, so that the gas can be blown out in parallel along the extension direction of the second sub-segment under the action of high pressure.

[0065] In some embodiments, optionally, the second air duct includes a third sub-segment and a fourth sub-segment, the third sub-segment is located between the fourth sub-segment and the fan; along the second opening to the fan, the flow cross-sectional area of the fourth sub-segment gradually decreases.

[0066] In this embodiment, the structure of the second air duct is further defined.

[0067] The second air duct includes a third subsection and a fourth subsection, and the third subsection is located between the fourth subsection and the fan.

[0068] The gas flowing toward the exhaust air duct through the second opening flows through the fourth subsection and the third subsection in sequence.

[0069] The flow cross-sectional area of the fourth sub-segment gradually decreases along the second opening to the fan. The fourth sub-segment is sectioned along a direction perpendicular to the extension of the fourth sub-segment. In the section, the area of the region enclosed by the contour line of the fourth sub-segment is the flow cross-sectional area of the fourth sub-segment.

[0070] The flow cross-sectional area of the fourth subsection gradually decreases from the second opening to the fan. When the fan rotates, the force of sucking airflow through the second opening to the second air duct can be increased, which is beneficial to increase the air intake of the second air duct, and further helps to further improve the heat exchange efficiency of the cooking appliance and reduce the temperature of the gas discharged from the cooking appliance.

[0071] In some embodiments, optionally, the cooking appliance further includes: a steam generator, the steam generator and the cooking cavity are connected to the same side of the exhaust air duct; a liquid storage box, arranged on a side of the exhaust air duct away from the cooking cavity, and the steam generator connects the liquid storage box and the cooking cavity.

[0072] In this embodiment, the structure of the cooking appliance is further defined.

[0073] Specifically, the cooking appliance further includes a steam generator and a liquid storage box.

[0074] The steam generator and the cooking cavity are connected to the same side of the exhaust air duct. The liquid storage box is arranged on the side of the exhaust air duct away from the cooking cavity, and the steam generator is connected to the liquid storage box and the cooking cavity.

[0075] When the cooking appliance starts the steam mode, the water in the liquid storage box enters the steam generator through the pump body of the cooking appliance. The high-temperature steam generated by the steam generator of the cooking appliance enters the cooking cavity, thereby increasing or maintaining the temperature in the cooking cavity to cook the food located in the cooking cavity. When the steam generator works, steam will be continuously delivered into the cooking cavity, resulting in an increase in pressure in the cooking cavity. In order to balance the pressure in the cooking cavity and avoid potential hazards caused by excessive pressure, part of the steam will be discharged through the exhaust pipe to achieve the function of pressure relief.

[0076] In some embodiments, optionally, a first opening is provided on the back of the appliance body, and a second opening is provided on the front of the appliance body.

[0077] In this embodiment, the structure of the appliance body is further defined.

[0078] Specifically, the appliance body includes a back and a front. The front is the side facing the user. A first opening is provided on the back of the appliance body, and a second opening is provided on the front of the appliance body.

[0079] That is, the air flows into the cooking appliance through the back of the appliance body and flows out of the cooking appliance through the front of the appliance body.

[0080] This application reasonably sets the structure of the cooking appliance, reduces the temperature of the exhaust gas discharged from the cooking appliance, avoids the exhaust gas discharged from the cooking appliance being too hot to burn people, and improves the use performance and market competitiveness of the product. At the same time, at least a part of the heat exchange tube is inclined, and the inlet is closer to the top wall of the cooking cavity than the outlet. This setting can prevent too much moisture in the exhaust gas from condensing on the handle of the door body of the cooking appliance, which is beneficial to improving the use performance of the product.

[0081] The additional aspects and advantages of this application will become apparent in the following description section or be learned through the practice of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] The above and / or additional aspects and advantages of this application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0083] Figure 1 shows a schematic structural diagram of a cooking appliance according to an embodiment of this application;

[0084] Figure 2 shows a partial structural diagram of a cooking appliance from a first perspective according to an embodiment of this application;

[0085] Figure 3 shows a partial structural diagram of a cooking appliance from a second perspective according to an embodiment of this application;

[0086] Figure 4 Shows a partial structural schematic diagram of a third perspective of a cooking appliance according to an embodiment of the present application;

[0087] Figure 5 Shows a structural schematic diagram of an exhaust air duct and an exhaust pipe according to an embodiment of the present application;

[0088] Figure 6 Shows a first partial structural schematic diagram of an exhaust air duct according to an embodiment of the present application;

[0089] Figure 7 Shows a schematic diagram of the air flow direction of an exhaust air duct according to an embodiment of the present application;

[0090] Figure 8 Shows a second partial structural schematic diagram of an exhaust air duct according to an embodiment of the present application;

[0091] Figure 9 Shows a third partial structural schematic diagram of an exhaust air duct according to an embodiment of the present application;

[0092] Figure 10 Shows a structural schematic diagram of a diversion bottom plate according to an embodiment of the present application;

[0093] Figure 11 Shows a structural schematic diagram of a first perspective of a heat exchange structure according to an embodiment of the present application;

[0094] Figure 12 Shows a structural schematic diagram of a second perspective of a heat exchange structure according to an embodiment of the present application;

[0095] Figure 13 Shows a structural schematic diagram of a third perspective of a heat exchange structure according to an embodiment of the present application;

[0096] Figure 14 Shows a structural schematic diagram of a fourth perspective of a heat exchange structure according to an embodiment of the present application.

[0097] Wherein, Figures 1 to 14 The corresponding relationship between the reference numerals and the component names in

[0098] 10 Cooking appliance, 100 Appliance body, 102 Back of the appliance body, 104 Front of the appliance body, 110 Cooking cavity, 112 Top wall of the cooking cavity, 120 Exhaust air duct, 122 Deflector bottom plate, 124 Deflector top plate, 126 First air duct, 1262 First sub-segment, 1264 Second sub-segment, 128 Second air duct, 1282 Third sub-segment, 1284 Fourth sub-segment, 130 First opening, 140 Second opening, 150 Partition board, 200 Fan, 210 First air inlet, 220 Second air inlet, 300 Heat exchange structure, 310 Heat exchange tube, 312 Inlet, 314 Outlet, 315 First pipe segment, 316 Second pipe segment, 317 Arc segment, 320 Fins, 400 Exhaust pipe, 500 Steam generator, 600 Liquid storage box, 700 Control panel, 800 Door body. Detailed implementation manners

[0099] In order to more clearly understand the above objects, features and advantages of the present application, the present application will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0100] Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0101] The following combines the attached Figures 1 to 14 drawings, and through specific embodiments and their application scenarios, the cooking appliance 10 provided by the embodiments of the present application will be described in detail.

[0102] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Figure 9 , Figure 11 , Figure 12 , Figure 13 and Figure 14 shown, a cooking appliance 10 according to some embodiments of the present application includes an appliance body 100, a heat exchange structure 300 and an exhaust pipe 400.

[0103] A cooking cavity 110 and an exhaust air duct 120 are provided inside the appliance body 100.

[0104] A first opening 130 and a second opening 140 are provided on the appliance body 100.

[0105] The exhaust air duct 120 communicates with the first opening 130 and the second opening 140.

[0106] The heat exchange structure 300 is provided in the appliance body 100.

[0107] The heat exchange structure 300 includes a heat exchange tube 310 and fins 320.

[0108] The heat exchange tube 310 is provided with an inlet 312 and an outlet 314, and the outlet 314 communicates with the second opening 140.

[0109] The fins 320 are provided on the part of the heat exchange tube 310 between the inlet 312 and the outlet 314, and the fins 320 are located in the exhaust air duct 120.

[0110] The exhaust pipe 400 connects the cooking cavity 110 and the inlet 312.

[0111] The cooking appliance 10 provided by the present application includes an appliance body 100, a heat exchange structure 300, and an exhaust pipe 400.

[0112] A cooking cavity 110 is provided in the appliance body 100, and the cooking cavity 110 is used to accommodate food ingredients.

[0113] An exhaust air duct 120 is further provided in the appliance body 100, and the fins 320 of the heat exchange structure 300 are provided in the exhaust air duct 120. A first opening 130 and a second opening 140 are provided on the appliance body 100, and the exhaust air duct 120 communicates with the first opening 130 and the second opening 140. The gas in the environment flows through the first opening 130 into the exhaust air duct 120, and flows out of the appliance body 100 through the fins 320 of the heat exchange structure 300 and then through the second opening 140.

[0114] Further, the heat exchange structure 300 includes a heat exchange tube 310 and fins 320, the heat exchange tube 310 is provided with an inlet 312 and an outlet 314, the exhaust pipe 400 connects the cooking cavity 110 and the inlet 312 of the heat exchange tube 310, and the fins 320 are located in the exhaust air duct 120.

[0115] Specifically, when the cooking appliance 10 starts the steam mode, the high-temperature steam generated by the steam generator 500 of the cooking appliance 10 enters the cooking cavity 110, thereby increasing the temperature in the cooking cavity 110 or maintaining the temperature in the cooking cavity 110 to cook the food ingredients located in the cooking cavity 110. When the steam generator 500 works, the steam will be continuously delivered into the cooking cavity 110, resulting in an increase in the pressure in the cooking cavity 110. In order to balance the pressure in the cooking cavity 110 and avoid potential hazards caused by excessive pressure, part of the steam will be discharged through the exhaust pipe 400 to achieve the function of pressure relief.

[0116] Further, the gas discharged from the exhaust pipe 400 enters the inlet 312 of the heat exchange tube 310. When the gas flows through the heat exchange tube 310, the fins 320 and the gas in the exhaust air duct 120 act together to reduce the temperature of the gas, so that the temperature of the gas discharged from the outlet 314 of the heat exchange structure 300 is much lower than the temperature of the gas entering the inlet 312 of the heat exchange structure 300. That is to say, the temperature of the gas after heat exchange by the heat exchange structure 300 drops rapidly, and then is discharged from the cooking appliance 10 through the outlet 314 of the heat exchange tube 310. Optionally, the outlet 314 of the heat exchange tube 310 is located in the exhaust air duct 120. In this way, the gas after heat exchange by the fins 320 is discharged into the exhaust air duct 120 through the outlet 314 of the heat exchange tube 310 and is discharged from the cooking appliance 10 through the second opening 140. Optionally, the outlet 314 of the heat exchange tube 310 is located outside the exhaust air duct 120, and the outlet 314 of the heat exchange tube 310 is communicated with the second opening 140. That is to say, the gas after heat exchange by the fins 320 is discharged towards the second opening 140 through the outlet 314 of the heat exchange tube 310 and is discharged from the cooking appliance 10 through the second opening 140.

[0117] The structure of the cooking appliance 10 is reasonably set in this application, the temperature of the externally discharged gas of the cooking appliance 10 is reduced, the gas discharged from the cooking appliance 10 is prevented from being overheated and burning people, and the use performance and market competitiveness of the product are improved.

[0118] It can be understood that the heat exchange tube 310 has a hollow structure, and the gas flows from the inlet 312 of the heat exchange tube 310 to the outlet 314 of the heat exchange tube 310. The fins 320 are arranged on the part of the heat exchange tube 310 between the inlet 312 and the outlet 314. That is to say, the matching structure of the fins 320, the inlet 312 of the heat exchange tube 310 and the outlet 314 of the heat exchange tube 310 is defined. The gas flowing into the heat exchange tube 310 through the inlet 312 will flow to the outlet 314 of the heat exchange tube 310 only after exchanging heat with the fins 320. The fins 320 increase the heat exchange area and are more conducive to gas heat dissipation.

[0119] In some embodiments, optionally, as Figure 2 shown, along the height direction of the cooking appliance 10, the exhaust air duct 120 is located above the cooking cavity 110.

[0120] In this embodiment, the matching structure of the cooking cavity 110 and the exhaust air duct 120 is further defined.

[0121] Specifically, along the height direction of the cooking appliance 10, the exhaust air duct 120 is located above the cooking cavity 110.

[0122] In some embodiments, optionally, at least a part of the heat exchange tube 310 is inclined.

[0123] The inlet 312 is closer to the top wall 112 of the cooking cavity than the outlet 314.

[0124] In this embodiment, the structure of the heat exchange tube 310 is further defined.

[0125] Specifically, at least a part of the heat exchange tube 310 is inclined. That is, a part of the heat exchange tube 310 is inclined, or the entire heat exchange tube 310 extends obliquely.

[0126] The inlet 312 is closer to the top wall 112 of the cooking cavity than the outlet 314. That is, the distance from the side of the inlet 312 facing the cooking cavity 110 to the top wall 112 of the cooking cavity is less than the distance from the side of the outlet 314 facing the cooking cavity 110 to the top wall 112 of the cooking cavity.

[0127] When the gas at a higher temperature flows through the heat exchange structure 300, part of the gas will condense into water and adhere to the inner wall of the heat exchange tube 310. Since at least a part of the heat exchange tube 310 is inclined, and the distance from the inlet 312 to the cooking cavity 110 is less than the distance from the outlet 314 to the cooking cavity 110, the condensed water will flow along the inner wall of the heat exchange tube 310 towards the inlet 312 and flow back into the cooking cavity 110 through the exhaust pipe 400. In this way, it can be avoided that the condensed water is discharged from the outlet 314 of the heat exchange tube 310 of the cooking appliance 10, which is beneficial to improving the use performance of the product.

[0128] In some embodiments, optionally, as Figure 11 and Figure 13 shown, the outlet 314 of the heat exchange tube 310 is located in the exhaust air duct 120, and one end of the heat exchange tube 310 is provided with an inlet 312.

[0129] The inner wall of the heat exchange tube 310 is provided with a connection to the outlet 314.

[0130] A part of the heat exchange tube 310 is located between the outlet 314 and the top wall 112 of the cooking cavity.

[0131] In this embodiment, the structure of the heat exchange tube 310 is further defined.

[0132] Specifically, the outlet 314 of the heat exchange tube 310 is located in the exhaust air duct 120, one end of the heat exchange tube 310 is provided with an inlet 312, and the inner wall of the heat exchange tube 310 is provided with a connection to the outlet 314.

[0133] Wherein, a part of the heat exchange tube 310 is located between the outlet 314 and the top wall 112 of the cooking cavity. That is, the minimum distance from the point on the inner wall of the outlet 314 to the top wall 112 of the cooking cavity is greater than the minimum distance from the point on the inner wall of the heat exchange tube 310 to the top wall 112 of the cooking cavity.

[0134] The part of the heat exchange tube 310 located between the outlet 314 and the top wall 112 of the cooking cavity serves to collect condensed water, which can prevent the condensed water from being discharged into the exhaust air duct 120 through the outlet 314. Furthermore, it can prevent the condensed water from being discharged from the cooking appliance 10 through the second opening 140 of the appliance body 100, which is beneficial to improving the performance of the product.

[0135] Optionally, the heat exchange tube 310 has a trough-shaped structure with one end open. The opening of the trough-shaped structure encloses the inlet 312, and the side wall of the trough-shaped structure is provided with the outlet 314.

[0136] Optionally, the outlet 314 is closer to the second opening 140 than the inlet 312. This further defines the structure of the heat exchange tube 310. Specifically, the outlet 314 of the heat exchange tube 310 is closer to the second opening 140 than the inlet 312 of the heat exchange tube 310.

[0137] Optionally, the inlet 312 is closer to the second opening 140 than the outlet 314. This further defines the structure of the heat exchange tube 310. Specifically, the inlet 312 of the heat exchange tube 310 is closer to the second opening 140 than the outlet 314 of the heat exchange tube 310.

[0138] In some embodiments, optionally, as Figure 11 and Figure 12 shown, the number of fins 320 is multiple.

[0139] The multiple fins 320 are arranged along the direction from the inlet 312 to the outlet 314.

[0140] In this embodiment, the composition of the heat exchange structure 300 is further defined.

[0141] Specifically, the number of fins 320 is multiple, and the multiple fins 320 are arranged along the direction from the inlet 312 to the outlet 314.

[0142] This setting increases the heat exchange area of the heat exchange structure 300, which is beneficial to accelerating the dissipation of heat, and further beneficial to reducing the temperature of the gas flowing out of the cooking appliance 10 through the second opening 140.

[0143] In some embodiments, optionally, the heat exchange tube 310 is a straight tube.

[0144] In some embodiments, optionally, as Figure 11 shown, the heat exchange tube 310 is arranged in a bent manner.

[0145] In this embodiment, the shape of the heat exchange tube 310 is further defined.

[0146] Specifically, the heat exchange tube 310 is a straight tube.

[0147] Specifically, the heat exchange tubes 310 are arranged in a bent manner. This arrangement is conducive to extending the length of the heat exchange tubes 310 while reasonably utilizing the internal space of the exhaust air duct 120. Furthermore, it is beneficial to increase the heat exchange area of the heat exchange structure 300, provide sufficient heat exchange time for the gas, and enhance the heat exchange effect.

[0148] In some embodiments, optionally, as Figure 11 shown, when the heat exchange tubes 310 are arranged in a bent manner, the heat exchange tubes 310 include a first tube section 315, a second tube section 316, and an arc section 317.

[0149] The first tube section 315 and the second tube section 316 are opposite and spaced apart.

[0150] The arc section 317 is connected between the first tube section 315 and the second tube section 316.

[0151] The first tube section 315 is provided with an inlet 312.

[0152] The second tube section 316 is provided with an outlet 314.

[0153] The fins 320 are arranged on the first tube section 315.

[0154] In this embodiment, the shape of the heat exchange tubes 310 is further defined.

[0155] Specifically, when the heat exchange tubes 310 are arranged in a bent manner, the heat exchange tubes 310 include a first tube section 315, a second tube section 316, and an arc section 317. The first tube section 315 and the second tube section 316 are opposite and spaced apart, and the arc section 317 is connected between the first tube section 315 and the second tube section 316. That is to say, the first tube section 315, the second tube section 316, and the arc section 317 are in a U shape.

[0156] Specifically, the first tube section 315 is provided with an inlet 312, the second tube section 316 is provided with an outlet 314, and the fins 320 are arranged on the first tube section 315.

[0157] This arrangement is conducive to extending the length of the heat exchange tubes 310 while reasonably utilizing the internal space of the appliance body 100. Furthermore, it is beneficial to increase the heat exchange area of the heat exchange structure 300, provide sufficient heat exchange time for the gas, and enhance the heat exchange effect.

[0158] In some other embodiments, when the heat exchange tubes 310 are arranged in a bent manner, the heat exchange tubes 310 are in an S shape.

[0159] In some other embodiments, when the heat exchange tubes 310 are arranged in a bent manner, the heat exchange tubes 310 are in a W shape.

[0160] In some other embodiments, when the heat exchange tubes 310 are arranged in a bent manner, the heat exchange tubes 310 are in a spiral shape.

[0161] Optionally, the arc segment 317 communicates with the first pipe segment 315 and also communicates with the second pipe segment 316.

[0162] In some embodiments, optionally, as Figure 6 shown, the cooking appliance 10 further includes: a blower 200 disposed in the exhaust air duct 120, and the blower 200 is located between the first opening 130 and the fins 320. The blower 200 has a first air outlet 210 and a second air outlet 220. The first air outlet 210 communicates with the first opening 130, and the second air outlet 220 communicates with the second opening 140.

[0163] In this embodiment, the cooking appliance 10 further includes a blower 200. The blower 200 is disposed in the exhaust air duct 120. The blower 200 has a first air outlet 210 and a second air outlet 220. The first air outlet 210 communicates with the first opening 130, and the second air outlet 220 communicates with the second opening 140. The blower 200 is located between the first opening 130 and the fins 320. In this way, when the blower 200 operates, the gas in the environment flows through the first opening 130 into the exhaust air duct 120, passes through the fins 320 of the heat exchange structure 300, and then flows out of the appliance body 100 through the second opening 140.

[0164] Furthermore, the gas discharged from the exhaust pipe 400 enters the inlet 312 of the heat exchange pipe 310. When the gas flows through the heat exchange pipe 310, the fins 320 and the blower 200 work together to reduce the temperature of the gas, so that the temperature of the gas discharged from the outlet 314 of the heat exchange structure 300 is much lower than the temperature of the gas entering the inlet 312 of the heat exchange structure 300.

[0165] The operation of the blower 200 can accelerate the gas flow to further enhance the heat exchange effect of the heat exchange structure 300, thereby further reducing the temperature of the gas discharged from the cooking appliance 10.

[0166] It can be understood that the blower 200 is located between the first opening 130 and the fins 320 of the heat exchange structure 300, that is, the blower 200 is closer to the first opening 130 than the fins 320. That is, it is ensured that the gas in the environment effectively flows from the first opening 130 to the fins 320, which can ensure the effective contact area and contact frequency between the fins 320 and the gas, and thus can ensure the heat exchange effect of the heat exchange structure 300. In some embodiments, optionally, as Figure 6 and Figure 7 shown, the appliance body 100 further includes a partition 150.

[0167] The partition 150 is disposed in the exhaust air duct 120.

[0168] The partition 150 and the duct wall of the exhaust air duct 120 enclose a first air duct 126 and a second air duct 128.

[0169] The blower 200 is disposed between the first air duct 126 and the second air duct 128, and the fins 320 are disposed in the first air duct 126.

[0170] The first air duct 126 communicates with the second air outlet 220 and the second opening 140.

[0171] The second air duct 128 communicates with the first air outlet 210 and the second opening 140.

[0172] In this embodiment, the structure of the appliance body 100 is further defined.

[0173] Specifically, the appliance body 100 further includes a partition 150, and the partition 150 is disposed in the exhaust air duct 120.

[0174] The partition 150 and the duct wall of the exhaust air duct 120 enclose the first air duct 126 and the second air duct 128. The first air duct 126 communicates with the second air outlet 220 of the blower 200, and the first air duct 126 communicates with the second opening 140. The second air duct 128 communicates with the first air outlet 210 of the blower 200, and the second air duct 128 communicates with the second opening 140.

[0175] Among them, the blower 200 is disposed between the first air duct 126 and the second air duct 128, and the fins 320 are disposed in the first air duct 126.

[0176] When the blower 200 operates, a part of the gas in the environment flows through the first opening 130 to the first air duct 126, and then flows out of the appliance body 100 through the second opening 140 after passing through the fins 320 of the heat exchange structure 300. Another part of the gas in the environment flows through the second opening 140 to the second air duct 128, and then flows out of the appliance body 100 through the second opening 140 after passing through the fins 320 of the heat exchange structure 300. This setting changes the airflow path in the exhaust air duct 120, increases the air inlet area of the exhaust air duct 120, and the airflows at different positions of the cooking appliance 10 can enter the exhaust air duct 120 simultaneously, which is beneficial to improving the heat exchange effect of the heat exchange structure 300.

[0177] Among them, Figure 7 the arrows in indicate the airflow path.

[0178] In some embodiments, optionally, along the height direction of the cooking appliance 10, the first air duct 126 is located above the second air duct 128.

[0179] In this embodiment, the cooperation structure of the first air duct 126 and the second air duct 128 is further defined.

[0180] Specifically, along the height direction of the cooking appliance 10, the first air duct 126 is located above the second air duct 128.

[0181] This setting has the function of separating the gas discharged through the first air duct 126 and the gas entering the exhaust air duct 120 through the second air duct 128, reducing the air flow rate of the gas discharged from the first air duct 126 flowing to the second air duct 128, and taking into account the heat exchange efficiency of the cooking appliance 10 while increasing the intake air volume.

[0182] In some embodiments, optionally, as Figure 6 and Figure 7 shown, the first air duct 126 includes a first sub-segment 1262 and a second sub-segment 1264.

[0183] The first sub-segment 1262 is located between the blower 200 and the second sub-segment 1264.

[0184] Along the direction from the blower 200 to the second opening 140, the cross-sectional area of the first sub-segment 1262 gradually decreases, and the cross-sectional area of the second sub-segment 1264 remains unchanged.

[0185] In this embodiment, the structure of the first air duct 126 is further defined.

[0186] The first air duct 126 includes a first sub-segment 1262 and a second sub-segment 1264, and the first sub-segment 1262 is located between the blower 200 and the second sub-segment 1264.

[0187] The gas flowing from the first opening 130 to the exhaust air duct 120 flows through the first sub-segment 1262 and the second sub-segment 1264 in sequence.

[0188] Among them, along the direction from the blower 200 to the second opening 140, the cross-sectional area of the first sub-segment 1262 gradually decreases, and the cross-sectional area of the second sub-segment 1264 remains unchanged.

[0189] Taking a cross-section of the first sub-segment 1262 along a direction perpendicular to the extension direction of the first sub-segment 1262, in the cross-section, the area of the region enclosed by the contour line of the first sub-segment 1262 is the cross-sectional area of the first sub-segment 1262.

[0190] Taking a cross-section of the second sub-segment 1264 along a direction perpendicular to the extension direction of the second sub-segment 1264, in the cross-section, the area of the region enclosed by the contour line of the second sub-segment 1264 is the cross-sectional area of the second sub-segment 1264.

[0191] The combination of the gradually decreasing cross-sectional area of the first sub-segment 1262 and the unchanged cross-sectional area of the second sub-segment 1264 is used to define the flow path of the gas discharged from the cooking appliance 10 through the second opening 140. The air flow flows through the first air duct 126 to the second opening 140 and blows out parallel to the extension direction of the second sub-segment 1264. This setting can further prevent the gas discharged from the first air duct 126 from being sucked into the second air duct 128, providing structural support for ensuring the heat exchange effect of the cooking appliance 10.

[0192] In addition, the cross-sectional area of the first sub-segment 1262 gradually decreases, which has a pressure boosting effect, enabling the gas to be blown out parallel to the extension direction of the second sub-segment 1264 under the action of a large pressure.

[0193] In some embodiments, optionally, as Figure 6 and Figure 7 shown, the second air duct 128 includes a third sub-segment 1282 and a fourth sub-segment 1284.

[0194] The third sub-segment 1282 is located between the fourth sub-segment 1284 and the blower 200.

[0195] Along the second opening 140 to the blower 200, the cross-sectional area of the fourth sub-segment 1284 gradually decreases.

[0196] In this embodiment, the structure of the second air duct 128 is further defined.

[0197] The second air duct 128 includes a third sub-segment 1282 and a fourth sub-segment 1284, and the third sub-segment 1282 is located between the fourth sub-segment 1284 and the blower 200.

[0198] The gas flowing from the second opening 140 to the exhaust air duct 120 flows through the fourth sub-segment 1284 and the third sub-segment 1282 in sequence.

[0199] Among them, along the second opening 140 to the blower 200, the cross-sectional area of the fourth sub-segment 1284 gradually decreases. Taking a cross-section of the fourth sub-segment 1284 perpendicular to its extension direction, in the cross-section, the area of the region enclosed by the contour line of the fourth sub-segment 1284 is the cross-sectional area of the fourth sub-segment 1284.

[0200] Along the second opening 140 to the blower 200, the cross-sectional area of the fourth sub-segment 1284 gradually decreases. When the blower 200 rotates, it can increase the force of sucking air flow from the second opening 140 into the second air duct 128, which is beneficial to increasing the air intake volume of the second air duct 128, and further beneficial to further improving the heat exchange efficiency of the cooking appliance 10 and reducing the temperature of the gas discharged from the cooking appliance 10.

[0201] Optionally, along the second opening 140 to the blower 200, the cross-sectional area of the third sub-segment 1282 remains unchanged.

[0202] Optionally, along the second opening 140 to the blower 200, the cross-sectional area of the third sub-segment 1282 gradually decreases.

[0203] In some embodiments, optionally, as Figure 2 shown, the cooking appliance 10 further includes a steam generator 500 and a liquid storage box 600.

[0204] The steam generator 500 and the cooking cavity 110 are connected to the same side of the exhaust air duct 120.

[0205] The liquid storage box 600 is arranged on the side of the exhaust air duct 120 away from the cooking cavity 110.

[0206] The steam generator 500 communicates with the liquid storage box 600 and the cooking cavity 110.

[0207] In this embodiment, the structure of the cooking appliance 10 is further defined.

[0208] Specifically, the cooking appliance 10 further includes a steam generator 500 and a liquid storage box 600.

[0209] The steam generator 500 and the cooking cavity 110 are connected to the same side of the exhaust air duct 120. The liquid storage box 600 is arranged on the side of the exhaust air duct 120 away from the cooking cavity 110, and the steam generator 500 communicates with the liquid storage box 600 and the cooking cavity 110.

[0210] When the cooking appliance 10 starts the steam mode, the water in the liquid storage box 600 enters the steam generator 500 through the pump body of the cooking appliance 10. The high-temperature steam generated by the steam generator 500 of the cooking appliance 10 enters the cooking cavity 110, so as to increase the temperature in the cooking cavity 110 or maintain the temperature in the cooking cavity 110 to cook the food located in the cooking cavity 110. When the steam generator 500 works, the steam will be continuously delivered into the cooking cavity 110, resulting in an increase in the pressure in the cooking cavity 110. In order to make the pressure in the cooking cavity 110 reach a balanced state and avoid potential hazards caused by excessive pressure, part of the steam will be discharged through the exhaust pipe 400 to achieve the function of pressure relief.

[0211] Optionally, as Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 shown, the exhaust air duct 120 includes: a diversion bottom plate 122, located on one side of the cooking cavity 110; a diversion top plate 124, connected to the side of the diversion bottom plate 122 away from the cooking cavity 110, and both the fan 200 and the heat exchange structure 300 are arranged between the diversion bottom plate 122 and the diversion top plate 124; the cooking appliance 10 further includes a steam generator 500 and a liquid storage box 600, the steam generator 500 and the cooking cavity 110 are connected to the same side of the diversion bottom plate 122, the liquid storage box 600 is arranged on the side of the diversion bottom plate 122 away from the cooking cavity 110, and the steam generator 500 communicates with the liquid storage box 600 and the cooking cavity.

[0212] Optionally, the exhaust air duct 120 is provided with a through-opening, and the exhaust pipe 400 is connected to the heat exchange pipe 310 through the through-opening.

[0213] In some embodiments, optionally, a first opening 130 is provided on the back 102 of the appliance body, and a second opening 140 is provided on the front face 104 of the appliance body.

[0214] In this embodiment, the structure of the appliance body 100 is further defined.

[0215] Specifically, the appliance body 100 includes a back and a front face. The front face is the side facing the user. A first opening 130 is provided on the back 102 of the appliance body, and a second opening 140 is provided on the front face 104 of the appliance body.

[0216] That is, the air flow enters the cooking appliance 10 through the back 102 of the appliance body and flows out of the cooking appliance 10 through the front face 104 of the appliance body.

[0217] The present application reasonably sets the structure of the cooking appliance 10, reduces the temperature of the externally exhausted gas of the cooking appliance 10, avoids the overheating of the gas discharged from the cooking appliance 10 from burning people, and improves the use performance and market competitiveness of the product. At the same time, at least a part of the heat exchange pipe 310 is inclined, and the inlet 312 is closer to the top wall 112 of the cooking cavity than the outlet 314. This setting can prevent excessive moisture in the externally exhausted gas from condensing on the handle of the door body 800 of the cooking appliance 10, which is beneficial to improving the use performance of the product.

[0218] Optionally, as Figure 1 and Figure 2 shown, the cooking appliance 10 further includes a control panel 700, the appliance body 100 further includes a door body 800, the control panel 700 and the door body 800 are both located on the front face 104 of the appliance body, and the second opening 140 is located between the door body 800 and the control panel 700. That is, the externally exhausted gas is discharged from the cooking appliance 10 through the second opening 140 between the control panel 700 and the door body 800.

[0219] Optionally, the cooking appliance 10 includes a steam box, a microwave steam oven, etc., which are not listed one by one here.

[0220] The present application provides a heat exchange structure 300 in the exhaust air duct 120. The heat exchange structure 300 includes a heat exchange pipe 310 and fins 320. The cooling pipe (i.e., the heat exchange pipe 310) is a hollow structure, and fins 320 are provided on the outer side of the cooling pipe. Through the cooling pipe, the purpose of quickly cooling the discharged steam is achieved.

[0221] When the steam is discharged externally, the fins 320 on the outer side of the cooling pipe dissipate heat, and cooperate with the operating fan 200 to quickly cool down the discharged steam. On the one hand, it solves the problem of steam scalding people during the external discharge of steam in the related art. On the other hand, after being cooled by the cooling pipe, part of the steam condenses into water and flows back into the interior of the cooking cavity 110, avoiding excessive water vapor from condensing on the handle of the door body 800, so as to achieve the purpose of improving the user experience effect of the product.

[0222] The cooking appliance 10 (such as, a steam oven) includes an appliance body 100, and the appliance body 100 includes a door body 800, a cooking cavity 110 and an exhaust air duct 120. The door body 800 is located directly in front of the cooking cavity 110, and the door body 800 is connected to the cooking cavity 110 through a hinge structure.

[0223] The cooking appliance 10 further includes a steam generator 500, the steam generator 500 is located at the rear side of the cooking cavity 110, and the steam generator 500 is fixed to the air guide bottom plate of the exhaust air duct 120 by screws.

[0224] The exhaust air duct 120 is located at the top of the cooking cavity 110, and the exhaust air duct 120 is used for exhausting and dissipating heat from the steam oven.

[0225] The cooking appliance 10 further includes a liquid storage box 600, the liquid storage box 600 is located at the top of the cooking cavity 110, and the liquid storage box 600 is used for supplying water to the steam oven.

[0226] The cooking appliance 10 further includes a control panel 700, the control panel 700 is located in front of the cooking cavity 110, and the control panel 700 is used for operating and controlling the functions of the steam oven.

[0227] The cooking appliance 10 includes an appliance body 100, a fan 200, a heat exchange structure 300 and an exhaust pipe 400.

[0228] A cooking cavity 110 is provided inside the appliance body 100, and the cooking cavity 110 is used for accommodating food ingredients.

[0229] An exhaust air duct 120 is further provided inside the appliance body 100, and the fan 200 and the heat exchange structure 300 are both arranged in the exhaust air duct 120. A first opening 130 and a second opening 140 are provided on the appliance body 100, and the exhaust air duct 120 communicates with the first opening 130 and the second opening 140. The fan 200 has a first air outlet 210 and a second air outlet 220, the first air outlet 210 communicates with the first opening 130, and the second air outlet 220 communicates with the second opening 140. The fan 200 is located between the heat exchange structure 300 and the first opening 130. In this way, when the fan 200 works, the gas in the environment flows through the first opening 130 into the exhaust air duct 120, and flows out of the appliance body 100 through the second opening 140 after passing through the heat exchange structure 300.

[0230] Further, the heat exchange structure 300 includes heat exchange pipes 310 and fins 320. The heat exchange pipes 310 are provided with an inlet 312 and an outlet 314. The exhaust pipe 400 is connected to the cooking cavity 110 and the inlet 312 of the heat exchange pipes 310, and the outlet 314 of the heat exchange pipes 310 is located in the exhaust air duct 120.

[0231] Specifically, when the cooking appliance 10 starts the steam mode, the high-temperature steam generated by the steam generator 500 of the cooking appliance 10 enters the cooking cavity 110, thereby increasing or maintaining the temperature in the cooking cavity 110 to cook the food located in the cooking cavity 110. When the steam generator 500 is working, steam will be continuously delivered into the cooking cavity 110, resulting in an increase in the pressure in the cooking cavity 110. In order to balance the pressure in the cooking cavity 110 and avoid potential hazards caused by excessive pressure, part of the steam will be discharged through the exhaust pipe 400 to achieve the function of pressure relief.

[0232] Further, the gas discharged from the exhaust pipe 400 enters the inlet 312 of the heat exchange pipes 310. When the gas flows through the heat exchange pipes 310, the fins 320 and the fan 200 work together to reduce the temperature of the gas, so that the temperature of the gas discharged from the outlet 314 of the heat exchange structure 300 is much lower than the temperature of the gas entering the inlet 312 of the heat exchange structure 300. That is to say, the temperature of the gas after heat exchange by the heat exchange structure 300 drops rapidly, and then the gas is discharged from the cooking appliance 10 through the second opening 140 under the action of the fan 200.

[0233] The present application reasonably arranges the structure of the cooking appliance 10, reduces the temperature of the externally discharged gas of the cooking appliance 10, avoids the gas discharged from the cooking appliance 10 from being too hot to burn people, and improves the use performance and market competitiveness of the product.

[0234] In the present application, the term "a plurality of" means two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0235] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. The above is only the preferred embodiment of this application and is not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. A cooking appliance, characterized in that, include: A cooking cavity and an exhaust duct are disposed in the cooking cavity, a first opening and a second opening are disposed on the cooking cavity, and the exhaust duct communicates with the first opening and the second opening; a heat exchange structure, provided on the appliance body, the heat exchange structure comprising a heat exchange tube and a fin, the heat exchange tube being provided with an inlet and an outlet, the outlet being communicated with the second opening, the fin being provided on a portion of the heat exchange tube between the inlet and the outlet, and the fin being located in the exhaust air duct; An exhaust pipe connects the cooking cavity and the inlet.

2. The cooking appliance according to claim 1, characterized in that, Along the height direction of the cooking appliance, the exhaust air duct is located above the cooking cavity.

3. The cooking appliance according to claim 2, characterized in that, At least a portion of the heat exchange tube is inclined, and the inlet is closer to the top wall of the cooking cavity than the outlet.

4. The cooking appliance according to claim 2, characterized in that, The outlet of the heat exchange tube is located in the exhaust air duct, the inlet is provided at one end of the heat exchange tube, the outlet is provided on the tube wall of the heat exchange tube, and a part of the heat exchange tube is located between the outlet and the top wall of the cooking cavity.

5. The cooking appliance according to any one of claims 1 to 4, characterized in that The number of the fins is plural, and the fins are arranged along a direction from the inlet to the outlet.

6. The cooking appliance according to any one of claims 1 to 4, characterized in that, The heat exchange tube is a straight tube; or The heat exchange tubes are arranged in a bent manner.

7. The cooking appliance according to claim 6, characterized in that, When the heat exchange tube is arranged in a bent manner, the heat exchange tube includes a first tube segment, a second tube segment and an arc segment, the first tube segment and the second tube segment are arranged opposite to each other and at intervals, the arc segment is connected between the first tube segment and the second tube segment, the first tube segment is provided with the inlet, the second tube segment is provided with the outlet, and the fin is provided on the first tube segment.

8. The cooking appliance according to any one of claims 1 to 4, characterized in that, Also includes: A fan is provided in the exhaust air duct, and the fan is located between the first opening and the fin, and the fan has a first air outlet and a second air outlet, the first air outlet is connected to the first opening, and the second air outlet is connected to the second opening.

9. The cooking appliance according to claim 8, wherein, The device body also includes: a partition plate disposed in the exhaust duct, wherein the partition plate and the duct wall of the exhaust duct enclose a first duct and a second duct, the fan is disposed between the first duct and the second duct, and the fin is disposed in the first duct; The first air duct is connected to the second air outlet and the second opening, and the second air duct is connected to the first air outlet and the second opening.

10. The cooking appliance according to claim 9, wherein, Along the height direction of the cooking appliance, the first air duct is located above the second air duct.

11. The cooking appliance according to claim 9, wherein, The first air duct comprises a first subsection and a second subsection, the first subsection being located between the fan and the second subsection; Along the fan to the second opening, the flow cross-sectional area of the first subsection gradually decreases, and the flow cross-sectional area of the second subsection remains unchanged.

12. The cooking appliance according to claim 9, characterized in that, The second air duct includes a third subsection and a fourth subsection, and the third subsection is located between the fourth subsection and the fan; Along the second opening to the fan, the flow cross-sectional area of the fourth subsection gradually decreases.

13. The cooking appliance according to any one of claims 1 to 4, characterized in that, Also includes: A steam generator, wherein the steam generator and the cooking cavity are connected to the same side of the exhaust air duct; The liquid storage box is arranged on a side of the exhaust air duct away from the cooking cavity, and the steam generator is connected to the liquid storage box and the cooking cavity.

14. The cooking appliance according to any one of claims 1 to 4, characterized in that, The back of the appliance body is provided with the first opening, and the face of the appliance body is provided with the second opening.

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