Cooking apparatus

Abstract

The utility model discloses a kind of cooking equipment, it is related to kitchen appliance technical field, the cooking equipment includes: machine body, fan assembly, combustor and steam heater, the machine body is equipped with cooking cavity, smoke exhaust passage and circulation cavity, the circulation cavity is communicated the cooking cavity, the smoke exhaust passage is communicated the circulation cavity;The fan assembly is used to drive flue gas to flow between the circulation cavity and the cooking cavity, and drive the flue gas of the circulation cavity to discharge from the smoke exhaust passage;The combustor is configured to heat the article in cooking cavity using gas;The steam heater is configured to heat the article in cooking cavity using steam.According to the cooking equipment of the utility model embodiment, by setting smoke exhaust passage, in different heating mode, different smoke exhaust effect can be achieved by whether enabling fan assembly, to adapt to multiple cooking mode, and without increasing extra for controlling different heating mode control smoke exhaust device, beneficial to simplify structure.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a cooking device. Background Technology

[0002] In related technologies, cooking equipment has two cooking modes: hot air heating and steam cooking. These two modes differ in their exhaust area requirements depending on the cooking needs. Hot air heating utilizes the heat of combustion of natural gas, thus requiring a larger exhaust area. Steam cooking, on the other hand, needs to fill the cavity with steam, necessitating a smaller exhaust area. This requires physically altering the exhaust area; however, during cooking, substances such as oil accumulate at the exhaust port, which may eventually cause the mechanism to become stuck. Utility Model Content

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one objective of this invention is to provide a cooking device with a smoke exhaust channel, wherein the fan assembly can drive the smoke to circulate between the cooking chamber and the circulation chamber, and can also drive the smoke in the circulation chamber to be discharged outwards, thereby improving the smoke exhaust effect.

[0004] A cooking device according to an embodiment of the present invention includes: a body, a fan assembly, a burner, and a steam heater. The body is provided with a cooking chamber, a smoke exhaust duct, and a circulation chamber. The circulation chamber is connected to the cooking chamber, and the smoke exhaust duct is connected to the circulation chamber. The fan assembly is used to drive flue gas to circulate between the circulation chamber and the cooking chamber, and to drive the flue gas in the circulation chamber to be discharged from the smoke exhaust duct. The burner is configured to heat items in the cooking chamber using gas. The steam heater is configured to heat items in the cooking chamber using steam.

[0005] According to the embodiments of the present invention, the cooking device can achieve different smoke exhaust effects in different heating modes by setting a smoke exhaust channel and whether or not the fan component is activated, so as to adapt to a variety of cooking modes, without the need to add an extra device for controlling smoke exhaust in different heating modes, which helps to simplify the structure.

[0006] In addition, the cooking device according to the above embodiments of the present invention may also have the following additional technical features:

[0007] In some examples of this invention, the fan assembly is used to drive a portion of the flue gas in the circulation chamber to circulate between the circulation chamber and the cooking chamber, and to drive another portion of the flue gas in the circulation chamber to be discharged from the exhaust duct.

[0008] In some examples of this utility model, the exhaust duct is connected to the cooking cavity, and exhaust can be vented from the cooking cavity through the exhaust duct.

[0009] In some examples of this utility model, the exhaust channel includes a first channel and a second channel, the second channel being connected to the circulation chamber for exhausting the circulation chamber, and the first channel being connected to the cooking chamber for exhausting the cooking chamber.

[0010] In some examples of this utility model, the first channel connects to the upper part of the cooking cavity and extends in the vertical direction, and the second channel connects to the upper part of the circulation cavity and connects to the first channel.

[0011] In some examples of this invention, the cooking cavity and the circulation cavity are distributed along the axis of the fan assembly, and the first channel and the second channel are distributed in a direction parallel to the axis of the fan assembly.

[0012] In some examples of this utility model, the top wall of the cooking cavity has a first opening, and the lower end of the first channel is connected to the first opening.

[0013] In some examples of this invention, the end of the second channel extends into the circulation cavity and connects to the upper part of the circulation cavity.

[0014] In some examples of this utility model, a first baffle is provided at the entrance of the second channel, the first baffle covers the entrance of the second channel, and the first baffle is provided with a plurality of exhaust holes for the passage of flue gas.

[0015] In some examples of this utility model, the flow area at the entrance of the second channel is not less than 300 mm2.

[0016] In some examples of this utility model, the second channel includes a first segment and a second segment, the second segment is connected to the first segment and is perpendicular to the first segment, the first segment is connected to the circulation cavity, the second segment is connected to the first channel, and the cross-sectional area of ​​the second segment is larger than that of the first segment.

[0017] In some examples of this utility model, the second segment includes a mounting plate and a pipe body. One end of the pipe body is provided with a smoke exhaust port, and the other end of the pipe body is provided with a second opening, which is connected to the first segment. The mounting plate includes a connecting part and an extension part. The connecting part is connected to the pipe body, and the extension part is connected to the first segment.

[0018] In some examples of this utility model, the body is further provided with a heat dissipation channel, the mounting plate is provided with a ventilation hole, the ventilation hole connects the heat dissipation channel with the second section of the second channel, and the fan assembly drives the airflow of the heat dissipation channel to flow to the second section of the second channel.

[0019] In some examples of this utility model, the body is further provided with a combustion chamber, which is located between the circulation chamber and the cooking chamber, and the burner is used to introduce flue gas into the combustion chamber.

[0020] In some examples of this utility model, the cooking chamber and the circulation chamber are distributed along the axis of the fan assembly. The back of the cooking chamber is provided with a flue gas inlet and a flue gas outlet. The flue gas generated by the burner driven by the fan assembly enters the circulation chamber from the flue gas inlet and enters the cooking chamber from the flue gas outlet. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the cooking device in some embodiments of this utility model;

[0022] Figure 2 This is an assembly diagram of the cooking device in some embodiments of the present invention (showing the state in which the second channel is connected to the body);

[0023] Figure 3 This is an assembly diagram of the cooking device in some embodiments of the present invention (showing the second channel separated from the body);

[0024] Figure 4 This is a cross-sectional view of the cooking equipment in some embodiments of this utility model;

[0025] Figure 5 This is a cross-sectional view of the cooking equipment in some embodiments of this utility model;

[0026] Figure 6 This is a partial enlarged view of the structure of the cooking device in some embodiments of the present invention (showing ventilation holes, exhaust holes and smoke exhaust holes);

[0027] Figure 7 This is a schematic diagram of the structure of the second channel in some embodiments of the present invention (showing the state when the first segment and the second segment are separated).

[0028] Figure label:

[0029] 1000. Cooking equipment; 100. Body; 10. Inner pot; 110. Cooking cavity; 101. First opening; 102. Smoke inlet; 103. Smoke outlet; 20. Exhaust duct; 21. First passage; 211. Second baffle section; 210. Third opening; 22. Second passage; 221. First section; 2211. First baffle section; 222. Second section; 2221. Pipe body; 202. Exhaust port; 203. Second opening; 2222, mounting plate; 2223, connecting part; 2224, extension part; 2225, flange; 204, ventilation hole; 205, exhaust hole; 206, smoke exhaust hole; 30, circulation chamber; 31, first cover; 40, fan assembly; 41, first impeller; 42, second impeller; 43, rotation drive component; 50, combustion chamber; 51, burner; 52, second cover; 520, through hole; 60, heat dissipation channel. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] Combination Figures 1 to 7 According to an embodiment of the present invention, a cooking device 1000 includes a body 100 and a fan assembly 40. The body 100 is provided with a cooking chamber 110, a smoke exhaust channel 20 and a circulation chamber 30. The circulation chamber 30 is connected to the cooking chamber 110, and the smoke exhaust channel 20 is connected to the circulation chamber 30. The fan assembly 40 is used to drive the smoke to circulate between the circulation chamber 30 and the cooking chamber 110, and to drive the smoke in the circulation chamber 30 to be discharged from the smoke exhaust channel 20.

[0032] Specifically, the cooking equipment 1000 also includes a burner 51 and a steam heater. The burner 51 is configured to heat the items inside the cooking chamber 110 using gas, which can achieve hot air heating or baking heating. The steam heater is configured to heat the items inside the cooking chamber 110 using steam, which can achieve steam heating.

[0033] More specifically, the cooking chamber 110 is used to hold food, and the exhaust duct 20 is connected to the cooking chamber 110, allowing the smoke or gas inside the cooking chamber 110 to be discharged through the exhaust duct 20. The burner 51 uses the flue gas generated by the gas combustion to heat the food inside the cooking chamber 110. The circulation chamber 30 is connected to the cooking chamber 110, and the circulation chamber 30 works in conjunction with the cooking chamber 110 to deliver the flue gas generated by the burner 51 to the cooking chamber 110, thereby improving the heating efficiency and uniformity of the cooking chamber 110. The fan assembly 40 drives the flue gas to circulate between the circulation chamber 30 and the cooking chamber 110, allowing the flue gas to carry the heat generated by the burner 51 to the cooking chamber 110, and improving the uniformity of heating the food inside the cooking chamber 110 during the circulation process. The fan assembly 40 can also drive the flue gas from the circulation chamber 30 to the exhaust duct 20. Thus, as the high-temperature flue gas circulates between the cooking chamber 110 and the circulation chamber 30, the exhaust duct 20 can discharge the hot air and oil fumes during the cooking process, which helps to improve the exhaust or smoke extraction effect, increase the exhaust volume, and thus improve the cooking effect.

[0034] The fan assembly 40 can either drive a portion of the flue gas to circulate between the circulation chamber 30 and the cooking chamber 110, or drive a portion of the flue gas to be discharged from the exhaust duct 20. Alternatively, the fan assembly 40 can only drive the flue gas to circulate between the circulation chamber 30 and the cooking chamber 110, or only drive the flue gas in the circulation chamber 30 to be discharged from the exhaust duct 20. Specifically, when the exhaust duct 20 is open, the fan assembly 40 can drive both flue gas circulation and discharge. When the exhaust duct 20 is closed, the fan assembly 40 can only drive the flue gas to circulate between the circulation chamber 30 and the cooking chamber 110. Alternatively, when the connection between the circulation chamber 30 and the cooking chamber 110 is closed, the fan assembly 40 can only drive the flue gas or airflow in the circulation chamber 30 to be discharged from the exhaust duct 20.

[0035] Furthermore, the steam heater can generate steam, which can be used to heat the food in the cooking chamber 110. When the steam is heating, the fan assembly 40 is not turned on. Therefore, without driving force, the steam is difficult to be discharged directly from the exhaust duct 20. As a result, the steam can fill the chamber, which can reduce steam loss and thus improve the heating effect when the steam is heating.

[0036] In other words, the circulation chamber 30 and the exhaust duct 20 can share the fan assembly 40. Generally, during cooking, gas is used to generate flue gas to heat or bake food. This heating method requires the removal of harmful gases to maintain oxygen supply balance during gas heating. Therefore, a larger exhaust area is needed for gas heating. When the fan assembly 40 is activated, it can both circulate the hot air from gas heating and exhaust some of the flue gas during the hot air circulation process, thus meeting the exhaust requirements for gas combustion. When using steam heating, steam is introduced into the cooking chamber 110 for heating, eliminating the need to activate the fan assembly 40. Therefore, steam in the cooking chamber 110 is less likely to enter the circulation chamber 30 or escape from the exhaust duct 20 connected to the circulation chamber 30, reducing steam loss and improving the cooking effect during steam heating. Therefore, by rationally setting the position of the exhaust duct 20, the exhaust effect in different heating modes can be achieved by whether or not the fan assembly 40 is activated, improving reliability during use and eliminating the need for additional devices to control exhaust in different heating modes, thus simplifying the structure.

[0037] In some embodiments of this invention, the fan assembly 40 is used to drive a portion of the flue gas in the circulation chamber 30 to circulate between the circulation chamber 30 and the cooking chamber 110, and to drive another portion of the flue gas in the circulation chamber 30 to be discharged from the exhaust duct 20. Therefore, there is no need to install a device to control the opening or closing state of the circulation chamber 30 or the exhaust duct 20. When the fan assembly 40 is started, it automatically drives the flue gas to circulate between the cooking chamber 110 and the circulation chamber 30, and during the flue gas circulation process, discharges a portion of the flue gas in the circulation chamber 30 from the exhaust duct 20, thereby achieving automatic smoke extraction during hot air heating.

[0038] Combination Figure 4 In some embodiments of this invention, the exhaust duct 20 is connected to the cooking chamber 110, allowing exhaust gas to be released from the cooking chamber 110 through the exhaust duct 20. This means that the fumes in the cooking chamber 110 can also be directly discharged through the exhaust duct 20, improving the exhaust effect and efficiency. For example, during the circulation of fumes within the cooking chamber 110, some fumes can enter the exhaust duct 20 from the cooking chamber 110 for discharge. During steam heating, the exhaust duct 20 is connected to the cooking chamber 110, allowing some steam to be discharged, preventing excessive humidity within the cooking chamber 110 and affecting the taste of the food. Alternatively, in a heating method combining steam heating and hot air heating, some fumes can be directly discharged from the cooking chamber 110.

[0039] Combination Figure 2 and Figure 4In some embodiments of this utility model, the exhaust duct 20 includes a first duct 21 and a second duct 22. The second duct 22 is connected to the circulation chamber 30 for exhausting gas from the circulation chamber 30, and the first duct 21 is connected to the cooking chamber 110 for exhausting gas from the cooking chamber 110. Thus, when cooking food using the burner 51, a portion of the smoke in the cooking chamber 110 can be directly exhausted through the first duct 21. During the smoke circulation process, a portion of the smoke can be exhausted from the circulation chamber 30, thereby increasing the amount of smoke exhausted during gas heating or hot air heating, which is beneficial for improving the smoke exhaust effect.

[0040] When cooking food using the steam heater, the fan assembly 40 is not activated. Therefore, there is no circulating airflow in the circulation chamber 30, and only a portion of the steam can be discharged from the first channel 21. This reduces the amount of steam discharged while maintaining communication between the cooking chamber 110 and the outside. Specifically, when the burner 51 is heating, the fan assembly 40 can drive the flue gas to be discharged from the second channel 22. Therefore, the exhaust area of ​​the first channel 21 can be set to be smaller. Reducing the exhaust area of ​​the first channel 21 prevents a large amount of steam from being discharged during steam heating, thus ensuring the effectiveness of steam heating. In other words, by setting the second channel 22, the exhaust area of ​​the first channel 21 can be smaller, which can adapt to different requirements for airflow or flue gas discharge in different modes. Therefore, under different heating modes, the second channel 22 can be used to achieve a variable exhaust volume without changing the exhaust area of ​​the first channel 21. That is, when gas heating is required, the fan assembly 40 needs to be activated, so exhaust can be carried out through the second channel 22, increasing the total exhaust volume; when steam heating is required, the fan assembly 40 is not activated, so it is difficult to exhaust from the second channel 22, thereby reducing the exhaust volume. Thus, the exhaust volume requirements of the two cooking methods can be adapted without physically changing the exhaust port area.

[0041] Of course, the smoke extraction effect can also be improved by adjusting the speed of the fan assembly 40.

[0042] Combination Figure 4 and Figure 5 In some embodiments of this utility model, the first channel 21 connects to the upper part of the cooking cavity 110 and extends in the vertical direction, which facilitates the upward flow and discharge of smoke or airflow. During cooking, the smoke and airflow are high-temperature gases, which are easy to flow upward and thus be discharged.

[0043] In some embodiments of this invention, the second channel 22 connects to the upper part of the circulation chamber 30 and to the first channel 21. Similarly, the connection of the second channel 22 to the upper part of the circulation chamber 30 facilitates the exhaust of flue gas and is close to the first channel 21, which shortens the flue gas flow path and simplifies the structure. Furthermore, the connection between the second channel 22 and the first channel 21 allows the flue gas or airflow from the first channel 21 and the second channel 22 to merge before being discharged, reducing the space occupied by the exhaust channel 20. In practical applications, users only need to avoid the location of one channel, providing convenience for users.

[0044] Combination Figure 4 In some embodiments of this utility model, the cooking chamber 110 and the circulation chamber 30 are distributed along the axis of the fan assembly 40, thereby the fan assembly 40 can drive airflow or flue gas to flow along the axis of the fan assembly 40. The first channel 21 and the second channel 22 are distributed in a direction parallel to the axis of the fan assembly 40, which helps to improve the structural compactness of the cooking equipment 1000.

[0045] Combination Figure 4 In some embodiments of this utility model, the top wall of the cooking cavity 110 has a first opening 101, and the lower end of the first channel 21 is connected to the first opening 101. In this way, the oil fumes, steam and other high-temperature gases generated by heating food in the cooking cavity 110 can be discharged from the top of the cooking cavity 110 through the first opening 101, and the first channel 21 can guide the airflow discharged from the first opening 101 to flow to the external space.

[0046] Combination Figure 4 and Figure 5 In some embodiments of this utility model, the end of the second channel 22 extends into the circulation chamber 30 and connects to the upper part of the circulation chamber 30, so that the inlet of the second channel 22 can be close to the fan assembly 40 and the high-temperature airflow can easily enter the second channel 22 when it flows upward, which is conducive to increasing the pressure at the end of the second channel 22 and improving the exhaust effect, thereby helping to reduce the area of ​​the outlet of the first channel 21.

[0047] Combination Figure 5 and Figure 6 In some embodiments of this invention, a first baffle portion 2211 is provided at the entrance of the second channel 22, covering the entrance of the second channel 22. The first baffle portion 2211 has multiple exhaust holes 206 for the passage of fumes, through which the fumes can be discharged. Specifically, the first baffle portion 2211 can provide a protective barrier to prevent flames from escaping from the second channel 22 in the event of an ignition event within the cooking cavity 110. The fumes are discharged through the exhaust holes 206 on the first baffle portion 2211, which improves the uniformity and stability of the fumes discharge.

[0048] In some embodiments of this invention, the flow area at the entrance of the second channel 22 is not less than 300 mm². 2 This helps ensure the exhaust volume of the second channel 22. Specifically, the exhaust volume can vary depending on the gas combustion rate, and is generally about 9m³. 3 / h, therefore, the flow opening area is 300mm. 2 The flow rate is approximately 9 m / s. Of course, depending on the gas combustion rate and the volume of the cooking equipment 1000, the flow area at the inlet of the second channel 22 can be 350 mm². 2 360mm 2 Or 400mm 2 wait.

[0049] Combination Figure 6 In some embodiments of this utility model, the exhaust port 206 is circular to facilitate gas flow. The inner diameter of the exhaust port 206 is not less than 5mm. Specifically, the size of the exhaust port 206 can be set according to its distribution and number. For example, while ensuring the exhaust volume, the opening area for gas flow and the size of the first baffle portion 2211 can be set first. From this, the arrangement position and number of exhaust ports 206 can be determined. The size of the exhaust port 206 can be determined based on the opening area and the number of exhaust ports 206, thereby ensuring the exhaust effect.

[0050] Combination Figure 5 and Figure 6 In some embodiments of this utility model, the second channel 22 includes a first segment 221 and a second segment 222. The second segment 222 connects to the first segment 221, the first segment 221 connects to the circulation chamber 30, and the second segment 222 connects to the first channel 21. Smoke enters the second segment 222 from the first segment 221, allowing the smoke from the circulation chamber 30 to merge with the smoke from the cooking chamber 110 in the first channel 21 before being discharged uniformly. This facilitates user use and allows for easy arrangement of the cooking equipment 1000. The second segment 222 is perpendicular to the first segment 221, which acts as a buffer, preventing direct smoke discharge and improving the uniformity of the exhaust.

[0051] Combination Figure 4 and Figure 6 In some embodiments of this invention, the cross-sectional area of ​​the second segment 222 is larger than that of the first segment 221. Specifically, the first segment 221 is the exhaust area, and the flue gas from the circulation chamber 30 enters the first segment 221. The second segment 222 is perpendicular to the first segment 221, and the increased cross-sectional area of ​​the second segment 222 facilitates the entry of flue gas into the second segment 222. Furthermore, when the body 100 is provided with a heat dissipation channel 60, the cooling gas in the heat dissipation channel 60 can be mixed in the second segment 222. Therefore, the larger cross-sectional area of ​​the second segment 222 can reduce the exhaust pressure when mixing cooling air.

[0052] Combination Figure 6 In some embodiments of this utility model, a second baffle portion 211 is provided at the first opening 101. The second baffle portion 211 can cover the lower end of the first channel 21, and the second baffle portion 211 is provided with an exhaust hole 205 for the passage of fumes. The exhaust hole 205 can guide the steam, fumes, and other fumes generated in the cooking cavity 110, control the flow rate and direction of the fumes, and ensure that the fumes enter the first channel 21 from the exhaust hole 205 and are discharged from the first channel 21. In addition, the second baffle portion 211 can prevent the airflow of the heat dissipation channel 60 from affecting the cooking cavity 110.

[0053] In some embodiments of this utility model, the cooking device 1000 further includes a microwave heating unit configured to heat items inside the cooking cavity 110. Microwaves can penetrate the surface of the items, rapidly heating their interiors, thus enriching the functionality of the cooking device 1000 and meeting diverse usage needs. The vent 205 may be circular, and its inner diameter is less than or equal to 5.5 mm. This prevents microwaves from penetrating through the vent 205 to the outside of the cooking device 1000 during operation, thus avoiding any impact on the user and improving the safety of the cooking device 1000.

[0054] Specifically, the second baffle 211 may be provided with multiple exhaust holes 205 arranged in a matrix. The multiple exhaust holes 205 can improve the uniformity of flue gas emission and avoid excessively high flue gas emission concentration in local areas. The number and size of the exhaust holes 205 can be adjusted according to the specifications and model of the cooking equipment 1000.

[0055] Combination Figure 6 and Figure 7 In some embodiments of this utility model, the second segment 222 includes a mounting plate 2222 and a pipe body 2221. One end of the pipe body 2221 is provided with a smoke exhaust port 202, and the other end of the pipe body 2221 is provided with a second opening 203, which is connected to the first segment 221. The mounting plate 2222 includes a connecting part 2223 and an extension part 2224. The connecting part 2223 is connected to the pipe body 2221, and the extension part 2224 is connected to the first segment 221. That is, the first segment 221 includes a pipe body 2221 for connecting the first segment 221 and the first channel 21, and a mounting plate 2222 for connecting the first segment 221 and the second segment 222, which facilitates manufacturing and assembly.

[0056] Specifically, in combination Figure 3The first channel 21 has a third opening 210 on its side wall. The exhaust port 202 of the pipe body 2221 is connected to the third opening 210. The second opening 203 of the pipe body 2221 is connected to the upper end of the first section 221. The connecting part 2223 of the mounting plate 2222 closes the end of the pipe body 2221 opposite to the exhaust port 202 and extends downward. The extension part 2224 can partially overlap with the first section 221 to improve the stability of the connection. The extension part 2224 and the first section 221 can be fixedly connected by screws. Referring to the figure, the first section 221 can be a through pipe extending in the vertical direction to guide the flue gas to flow from bottom to top.

[0057] Combination Figure 5 and Figure 6 In some embodiments of this utility model, the body 100 is further provided with a heat dissipation channel 60, and the mounting plate 2222 is provided with a ventilation hole 204. The ventilation hole 204 connects the heat dissipation channel 60 and the second section 222 of the second channel 22. The fan assembly 40 drives the airflow of the heat dissipation channel 60 to flow to the second section 222 of the second channel 22. Specifically, in conjunction with Figure 6 Ventilation holes 204 can be drilled in the mounting plate 2222 to introduce cooling air from the heat dissipation channel 60. The cooling air from the heat dissipation channel 60 mixes with the flue gas from the second channel 22 and the first channel 21, which can lower the temperature of the exhaust gas, thereby reducing the exhaust temperature. In conjunction with the above, the enlarged area of ​​the second channel 22 also allows for mixing of cooling air by reducing pressure.

[0058] Combination Figure 5 In some embodiments of this utility model, the body 100 is further provided with a combustion chamber 50, which is located between the circulation chamber 30 and the cooking chamber 110. The burner 51 is used to introduce flue gas into the combustion chamber 50. Specifically, when the fan assembly 40 is working, the airflow can circulate between the circulation chamber 30, the cooking chamber 110 and the combustion chamber 50, which can send the flue gas from the combustion chamber 50 into the cooking chamber 110. When the flue gas from the cooking chamber 110 enters the circulation chamber 30, part of the flue gas continues to circulate to cook food, and part of the flue gas is discharged from the second channel 22 connected to the circulation chamber 30.

[0059] Combination Figure 4 and Figure 5 In some embodiments of this utility model, the cooking chamber 110 and the circulation chamber 30 are distributed along the axis of the fan assembly 40, which can shorten the airflow path, improve structural compactness, and increase energy utilization. The back of the cooking chamber 110 is provided with a flue gas inlet 102 and a flue gas outlet 103. The flue gas generated by the burner 51 driven by the fan assembly 40 is introduced into the circulation chamber 30 through the flue gas inlet 102 and into the cooking chamber 110 through the flue gas outlet 103. This allows the flue gas generated by the burner 51 to be introduced into the cooking chamber 110 and to circulate the flue gas between the circulation chamber 30 and the cooking chamber 110.

[0060] In some embodiments of this utility model, the inlet of the second channel 22 is close to the air outlet of the fan assembly 40. The pressure is higher at the position close to the air outlet of the fan assembly 40, which can improve the exhaust effect and help reduce the area of ​​the smoke exhaust channel 20 outlet.

[0061] Combination Figure 5 In some embodiments of this utility model, the fan assembly 40 includes a rotary drive 43 and a first impeller 41. The rotary drive 43 is connected to the first impeller 41 in a transmission manner. The first impeller 41 is located in the heat dissipation channel 60. When the first impeller 41 rotates, it can draw external gas from the machine body 100 into the heat dissipation channel 60 and drive the airflow to flow into the second channel 22.

[0062] In some embodiments of this utility model, the fan assembly 40 includes a rotary drive 43 and a second impeller 42. The rotary drive 43 is connected to the second impeller 42 in a transmission manner. The second impeller 42 is located in the circulation chamber 30. When the second impeller 42 rotates, it can drive the flow of flue gas in the circulation chamber 30. The rotation of the second impeller 42 can drive the airflow from the flue gas inlet 102 into the cooking chamber 110.

[0063] Combination Figure 5 In some embodiments of this utility model, the body 100 includes an inner liner 10 and a first cover 31. A cooking cavity 110 is formed inside the inner liner 10. The first cover 31 covers the outer side of the inner liner 10. A circulation cavity 30 is formed between the first cover 31 and the inner liner 10. A smoke inlet 102 is provided on the back of the inner liner 10. The smoke inlet 102 connects the cooking cavity 110 and the circulation cavity 30, so that a part of the smoke in the circulation cavity 30 can enter the cooking cavity 110. A part of the second channel 22 extends into the first cover 31, so that a part of the smoke in the circulation cavity 30 can be discharged from the second channel 22.

[0064] Combination Figure 5 In some embodiments of this utility model, the body 100 further includes a second cover 52, which covers the outside of the inner liner 10 and is located inside the first cover 31. A combustion chamber 50 is formed between the second cover 52 and the inner liner 10. A burner 51 is located in the combustion chamber 50, which is connected to the circulation chamber 30. A flue gas outlet 103 is provided on the back of the inner liner 10, which is connected to the cooking chamber 110 and the combustion chamber 50. The circulation channel is provided with an air outlet connected to the cooking chamber 110. The second cover 52 is provided with a through hole 520, which is connected to the combustion chamber 50 and the circulation chamber 30. During the airflow circulation process, when the airflow passes through the combustion chamber 50, it can continuously carry the flue gas generated by the burner 51 into the circulation chamber 30, and then into the cooking chamber 110 through the flue gas inlet 102, thus achieving circulation and helping to ensure the cooking effect.

[0065] In some embodiments of this utility model, the outlet of the second channel 22 is located on the side wall of the first channel 21. Specifically, since the flue gas discharged from the second channel 22 is driven by the fan assembly 40, the flue gas velocity may be greater than the flue gas velocity naturally discharged upward from the cooking cavity 110 in the first channel 21. The outlet of the second channel 22 is located on the side wall of the first channel 21, which can increase the airflow resistance when the flue gas from the second channel 22 enters the first channel 21, thereby playing a buffering role. The flue gas in the second channel 22 can merge with the flue gas in the first channel 21 before being discharged, and the flow rate of the flue gas is relatively uniform when it is discharged, which is convenient for users.

[0066] Combination Figures 1 to 7 According to the cooking device 1000 of this utility model embodiment, this utility model solves the problem of different exhaust areas required for hot air heating and steam heating by making the exhaust volume variable without using a physical mechanism.

[0067] Specifically, during hot air heating, the high-temperature air from the combustion in the gas burner 51 and the air in the cooking chamber 110 are drawn in by the fan assembly 40, mixed in the circulation chamber 30, and then the hot air from the flue gas outlet 103 heats the cooking chamber 110. The flue gas can be discharged outside the appliance from the first channel 21 and the second channel 22.

[0068] During steam heating, the steam outlet injects steam generated by the steam heater (not shown in the figure, but may be a steam generator) into the cooking chamber 110. Since the area of ​​the first channel 21 or the first opening 101 is designed to be small, a large amount of steam can be prevented from being released to the outside of the appliance.

[0069] This design allows the cooking cavity 110 to be filled with steam, reducing the amount of steam generated, water consumption, and power consumption. It also allows for smaller water tanks and miniaturized steam generators, thus reducing costs. Therefore, by setting appropriate first opening 101 and first channel 21, the cooking effect during steam heating can be improved.

[0070] Therefore, the cooking device 1000 according to the present utility model has a structure that does not increase costs and has no problems such as malfunctions by using a variable exhaust volume method without changing the exhaust area of ​​the first opening 101 or the first channel 21.

[0071] Specifically, in order to obtain an appropriate exhaust volume during both hot air heating and steam heating, this invention provides a second exhaust channel 22 downstream of the exhaust channel 20 to exhaust from the circulation chamber 30. Since the fan assembly 40 is running during gas combustion, the exhaust area can be reduced compared to conventional methods.

[0072] For example, the exhaust pressure of the exhaust port in the related technology is a few Pa, while the pressure of the circulation chamber 30 rises to about 40 Pa. Therefore, even if the opening area is reduced to about 30% to 40% of the exhaust port area in the related technology, sufficient exhaust volume can be ensured. Thus, the exhaust port or exhaust hole of the cooking chamber 110 can be set to a very small area.

[0073] Furthermore, the fan assembly 40 stops operating during steam heating, resulting in a channel pressure of only a few Pa in the circulation chamber 30. Therefore, even if the second channel 22 is open or connected to the outside during steam heating, the amount of exhaust is much less compared to hot air heating. By setting the area of ​​the exhaust port of the cooking chamber 110 to achieve optimal exhaust volume, the exhaust volume settings for both cooking methods can be adapted without physically changing the exhaust port area.

[0074] Specifically, in related technologies, only one exhaust port is provided, located on the top wall of the cooking cavity. To meet the exhaust or smoke removal requirements during hot air heating, the flow area of ​​the exhaust port needs to be relatively large. However, this area can lead to excessive steam loss or discharge during steam heating. Assuming the flow area of ​​the exhaust port in related technologies is A, in this application, the flow area of ​​the first channel 21 is B. Since both the first channel 21 and the second channel 22 are provided, the first channel 21 connects to the top wall of the cooking cavity 110, and the second channel 22 connects to the circulation cavity 30. During hot air heating, the fan assembly 40 can drive the smoke to be discharged from the second channel 22. Therefore, the flow area B of the first channel 21 is reduced by 30-40% compared to the exhaust port A in related technologies. Thus, by activating the second channel 22 for exhaust during hot air heating, excessive steam will not flow out of the first channel 21 during steam heating.

[0075] According to a specific embodiment of the cooking device 1000 of this utility model, during hot air heating, the air pressure blown from the circulation chamber 30 to the cooking chamber 110 is approximately 40 Pa, the air pressure around the fan assembly 40 is approximately 180 Pa, and the flow area of ​​the first channel 21 is 800 mm². 2 The blown air pressure is approximately 30 Pa, and the flow area of ​​the second channel 22 is 320 mm². 2 The blown air pressure is about 180 Pa. Therefore, according to the current test results, based on the capacity of the blower assembly 40 used, the flow area B of the first channel 21 can be reduced to 40% of the exhaust port A in the related art.

[0076] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0078] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0079] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0081] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A cooking appliance (1000), characterized in that, include: The body (100) is provided with a cooking chamber (110), a smoke exhaust channel (20) and a circulation chamber (30), wherein the circulation chamber (30) is connected to the cooking chamber (110) and the smoke exhaust channel (20) is connected to the circulation chamber (30); A fan assembly (40) is used to drive flue gas to circulate between the circulation chamber (30) and the cooking chamber (110), and to drive the flue gas in the circulation chamber (30) to be discharged from the exhaust duct (20); A burner (51) configured to heat items in a cooking chamber (110) using gas; A steam heater configured to heat items within a cooking chamber (110) using steam.

2. The cooking apparatus (1000) according to claim 1, characterized in that, The fan assembly (40) is used to drive a portion of the flue gas in the circulation chamber (30) to circulate between the circulation chamber (30) and the cooking chamber (110), and to drive another portion of the flue gas in the circulation chamber (30) to be discharged from the exhaust duct (20).

3. The cooking apparatus (1000) according to claim 1, characterized in that, The exhaust duct (20) is connected to the cooking chamber (110), and exhaust can be vented from the cooking chamber (110) through the exhaust duct (20).

4. The cooking apparatus (1000) according to claim 3, characterized in that, The exhaust duct (20) includes a first duct (21) and a second duct (22). The second duct (22) is connected to the circulation chamber (30) for exhausting the air from the circulation chamber (30). The first duct (21) is connected to the cooking chamber (110) for exhausting the air from the cooking chamber (110).

5. The cooking apparatus (1000) according to claim 4, characterized in that, The first channel (21) connects to the upper part of the cooking cavity (110) and extends in the vertical direction, and the second channel (22) connects to the upper part of the circulation cavity (30) and connects to the first channel (21).

6. The cooking apparatus (1000) according to claim 5, characterized in that, The cooking chamber (110) and the circulation chamber (30) are distributed along the axis of the fan assembly (40), and the first channel (21) and the second channel (22) are distributed in a direction parallel to the axis of the fan assembly (40).

7. The cooking apparatus (1000) according to claim 4, characterized in that, The top wall of the cooking cavity (110) has a first opening (101), and the lower end of the first channel (21) is connected to the first opening (101).

8. The cooking apparatus (1000) according to claim 4, characterized in that, The end of the second channel (22) extends into the circulation cavity (30) and connects to the upper part of the circulation cavity (30).

9. The cooking apparatus (1000) according to claim 4, characterized in that, The second channel (22) has a first baffle (2211) at its entrance, which covers the entrance of the second channel (22). The first baffle (2211) has multiple exhaust holes for the passage of flue gas; and / or the flow area at the entrance of the second channel (22) is not less than 300 mm². 2 .

10. The cooking apparatus (1000) according to claim 4, characterized in that, The second channel (22) includes a first segment (221) and a second segment (222). The second segment (222) is connected to the first segment (221) and is perpendicular to the first segment (221). The first segment (221) is connected to the circulation cavity (30). The second segment (222) is connected to the first channel (21). The cross-sectional area of ​​the second segment (222) is larger than that of the first segment (221).

11. The cooking apparatus (1000) according to claim 10, characterized in that, The second segment (222) includes a mounting plate (2222) and a pipe body (2221). One end of the pipe body (2221) is provided with a smoke exhaust port (202), and the other end of the pipe body (2221) is provided with a second opening (203). The second opening (203) is connected to the first segment (221). The mounting plate (2222) includes a connecting part (2223) and an extension part (2224). The connecting part (2223) is connected to the pipe body (2221), and the extension part (2224) is connected to the first segment (221).

12. The cooking apparatus (1000) according to claim 11, characterized in that, The body (100) is also provided with a heat dissipation channel (60), and the mounting plate (2222) is provided with a ventilation hole (204). The ventilation hole (204) connects the heat dissipation channel (60) with the second section (222) of the second channel (22). The fan assembly (40) drives the airflow of the heat dissipation channel (60) to the second section (222) of the second channel (22).

13. The cooking apparatus (1000) according to claim 1, characterized in that, The body (100) is also provided with a combustion chamber (50), which is located between the circulation chamber (30) and the cooking chamber (110), and the burner (51) is used to introduce flue gas into the combustion chamber (50).

14. The cooking apparatus (1000) according to claim 1, characterized in that, The cooking chamber (110) and the circulation chamber (30) are distributed along the axis of the fan assembly (40). The back of the cooking chamber (110) is provided with a flue gas inlet (102) and a flue gas outlet (103). The flue gas generated by the burner (51) driven by the fan assembly (40) is introduced into the circulation chamber (30) through the flue gas inlet (102) and into the cooking chamber (110) through the flue gas outlet (103).

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