Cooking equipment

Abstract

The invention discloses cooking equipment which comprises a cooking device provided with a steam inlet; the steam device comprises a combustion chamber, a combustor and a water pipe, the combustor is arranged in the combustion chamber and is configured to be heated through fuel gas, at least one part of the water pipe is arranged in the combustion chamber and is matched with the combustion chamber in a heat exchange mode, and the water pipe is connected with the steam inlet so as to supply steam to the cooking equipment. According to the cooking equipment disclosed by the embodiment of the invention, the steam can be generated by heating the fuel gas, and the steam is provided for the cooking device, so that the cooking of the steam device is facilitated. Steam is generated through gas heating, the limitation of electric heating can be broken through, and the power of the steam device can be greatly improved.

Description

Technical Field

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

[0002] At present, mainstream integrated stoves mainly integrate gas stoves, range hoods and steam ovens. The volume of steam ovens is about 60L, which is much larger than ordinary steamers. However, due to the limitation of electric power, the power of the whole machine is within 3kW, and the power of the steam generator that produces steam is generally within 2.5kW. With such a large volume and such a small power of the steam generator, the heating speed of the ingredients will be slow, the taste will be worse, and the cooking experience will be poor. Summary of the invention

[0003] One object of the present invention is to provide a cooking device that can generate steam by heating with gas and provide steam to a cooking device so as to facilitate cooking by the steam device. By using gas to heat and generate steam, the limitation of electric heating can be broken through and the power of the steam device can be greatly improved.

[0004] A cooking device according to an embodiment of the present invention includes: a cooking device having a steam inlet; a steam device, the steam device including a combustion chamber, a burner and a water pipe, the burner is arranged in the combustion chamber and is configured to be heated by gas, at least a portion of the water pipe is arranged in the combustion chamber and cooperates with the combustion chamber for heat exchange, and the water pipe is connected to the steam inlet to supply steam to the cooking device.

[0005] The cooking device according to the embodiment of the present invention can generate steam by gas heating and provide steam to the cooking device to facilitate cooking by the steam device. By generating steam by gas heating, the limitation of electric heating can be broken and the power of the steam device can be greatly improved.

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

[0007] In some embodiments, the water pipe includes a plurality of heat exchange pipe sections, and the heat exchange pipe sections are disposed through the combustion chamber.

[0008] In some embodiments, two ends of the heat exchange tube section are respectively connected to opposite side walls of the combustion chamber.

[0009] In some embodiments, the water pipe further includes a connecting pipe section, and a plurality of the heat exchange pipe sections are connected end to end through the connecting pipe section to form a tubular shape extending in a circuitous manner.

[0010] In some embodiments, the connecting pipe section is disposed outside the combustion chamber.

[0011] In some embodiments, a plurality of the heat exchange tube segments are arranged side by side in the up-down direction and staggered front-to-back, and there are gaps between adjacent heat exchange tube segments for flue gas to pass through.

[0012] In some embodiments, the burner is an atmospheric burner, and the burner includes: an ejector tube, the ejector tube having a first gas inlet and a first air inlet; a first fan, the first fan is connected to the first air inlet and drives the airflow from the first air inlet into the ejector tube.

[0013] In some embodiments, the burner is a premixing burner, and the steam device further includes: a premixing component, the premixing component having a second gas inlet, a second air inlet and a mixed gas outlet, the mixed gas outlet is connected to the burner and provides a mixture of air and gas to the burner.

[0014] In some embodiments, the premixing assembly includes: a regulating valve, one end of which is connected to the second gas inlet, and the regulating valve is configured to adjust its opening according to the gas concentration at the mixed gas outlet; a venturi tube, one end of which is connected to the other end of the regulating valve; a second fan, the inlet of the second fan is connected to the second air inlet and the other end of the venturi tube, and the outlet of the second fan is connected to the mixed gas outlet.

[0015] In some embodiments, the combustion chamber has a smoke exhaust passage, and the smoke exhaust passage is used for exhausting smoke from the steam device. At least a portion of the water pipe is disposed in the combustion chamber and is located between the burner and the smoke exhaust passage.

[0016] In some embodiments, the cooking device has a steam outlet, and the steam outlet is communicated with the smoke exhaust channel.

[0017] In some embodiments, the cooking device has a steam cavity and a cooking cavity, the steam cavity is connected to the cooking cavity, and the steam inlet is connected to the steam cavity.

[0018] In some embodiments, the steam chamber and the cooking chamber are separated by a partition, and the partition is provided with a through hole connecting the steam chamber and the cooking chamber, the partition is configured as a perforated plate, and the density of the openings on the partition is not less than 0.01 per mm 2 , and no more than 1 / mm 2 .

[0019] In some embodiments, the cooking device has a cooking cavity, and the steam inlet is connected to the cooking cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of a cooking device according to an embodiment of the present invention.

[0021] Figure 2 Schematic diagram of a cooking device according to an embodiment of the present invention.

[0022] Figure 3 Schematic diagram of a cooking device according to an embodiment of the present invention.

[0023] Figure 4 Schematic diagram of a cooking device according to an embodiment of the present invention.

[0024] Figure 5 Schematic diagram of a flow path of a cooking device according to an embodiment of the present invention.

[0025] Figure 6 Schematic diagram of a steam device of a cooking apparatus according to an embodiment of the present invention.

[0026] Figure 7 Schematic diagram of a steam device of a cooking apparatus according to an embodiment of the present invention.

[0027] Figure 8 Schematic diagram of a flow path of a cooking device according to an embodiment of the present invention.

[0028] Fig. 9 Schematic diagram of a flow path of a cooking device according to an embodiment of the present invention.

[0029] Fig.10 Schematic diagram of a flow path of a cooking device according to an embodiment of the present invention.

[0030] Fig.11 Schematic diagram of a steam device of a cooking apparatus according to an embodiment of the present invention.

[0031] Fig.12 Schematic diagram of a flow path of a cooking device according to an embodiment of the present invention.

[0032] Fig.13 Schematic diagram of a cooking device of a cooking apparatus according to an embodiment of the present invention.

[0033] Fig.14 Schematic diagram of a cooking device of a cooking apparatus according to an embodiment of the present invention.

[0034] Fig.15 Schematic diagram of a cooking device of a cooking apparatus according to an embodiment of the present invention.

[0035] Fig.16 Schematic diagram of a cooking device of a cooking apparatus according to an embodiment of the present invention.

[0036] Reference numerals:

[0037] Cooking equipment 100, cabinet 10, smoke exhaust port 101, cooking device 20, steam inlet 201, steam outlet 202, steam chamber 203, cooking chamber 204, smoke channel 205, smoke inlet 206, smoke outlet 207, liner 21, cover 22, partition 23, steam device 30, combustion chamber 31, smoke exhaust channel 3101, burner 32, ejector pipe 321, first gas inlet 3201, first air inlet 3202, first fan 322, heat exchange element 33, heat exchange flow channel 3301, water pipe 33a, heat exchange pipe section 331a, connecting pipe section 332a, flue gas flow channel 3302, shell 331b, smoke pipe 332b, premixing component 34, second gas inlet 3401, second air inlet 3402, mixed gas outlet 3403, regulating valve 341, venturi tube 342, second fan 343, second reversing component 35, third switch valve 351, fourth switch valve 352, gas flow channel 40, gas inlet 401, gas outlet 402, first outlet 402a, second outlet 402b, first reversing component 41, first switch valve 411, second switch valve 412, water pump 50, gas stove 60. DETAILED DESCRIPTION

[0038] In order to solve the problem that the power of the steam generator in the related art is difficult to meet the cooking needs of large volumes, the present invention provides a cooking device that can generate steam by heating with gas. The cooking device in the present invention is particularly suitable for integrated stoves. Compared with the embedded steam oven, the integrated stove has a gas pipeline to supply the gas stove for combustion. Gas combustion is an important source of heat. The patent of the present invention is to generate steam by evaporating water through the heat generated by gas combustion, and supply it to the steam box to meet the steam cooking needs.

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0040] like Figure 1 The cooking device 100 according to an embodiment of the present invention includes a cooking device 20, in which food to be cooked can be placed and cooked by heating, wherein the cooking device 20 can have a steam inlet 201, and the steam inlet 201 can introduce steam to heat and cook the food to be cooked.

[0041] In addition, the cooking device 100 may further include a steam device 30 , which is connected to the steam inlet 201 . The steam device 30 is configured to be heated by gas and can supply steam to the steam inlet 201 .

[0042] According to the cooking device 100 of the embodiment of the present invention, gas heating can be used to generate steam, and steam can be provided to the cooking device 20 to facilitate cooking by the steam device 30. By using gas heating to generate steam, the limitation of electric heating can be broken, and the power of the steam device 30 can be greatly improved, thereby improving the efficiency and effect of cooking. In addition, in the actual cooking process, the cooking temperature has a greater impact on the taste of the food. By increasing the cooking power, the taste of the cooked food can be optimized.

[0043] The cooking device 100 of the present invention provides a new combustion heat exchange system, which generates water vapor through heat exchange between high-temperature flue gas generated after gas combustion and water, and the water vapor is passed into the steam oven to meet the steam cooking needs. The power of the steam device is no longer limited by electric power and can be 4kW or even larger. The gas enters the steam device 30 for combustion, and sufficient air is added during the combustion process. The high-temperature flue gas generated by the combustion heats the normal temperature water to turn the water into steam. The temperature of the high-temperature flue gas after heat exchange is reduced and discharged through the exhaust channel 3101 of the integrated stove, while the water vapor is passed into the steam box to heat the food. The steam that does not have time to exchange heat is passed into the exhaust channel 3101 from the steam outlet 202 and discharged. Breaking the limitation of electric power, using gas combustion to generate steam to heat the food. Different steam quantities are achieved by designing the power of gas combustion and the heat exchange efficiency between high-temperature flue gas and water.

[0044] In addition, the cooking device 100 of the present invention utilizes gas heating to generate steam, wherein the cooking device 100 may have a gas flow channel 40, and the gas flow channel 40 may specifically supply gas to the cooking device 20. The gas flow channel 40 may also have multiple branches, and the multiple branches may respectively provide gas to different cooking utensils, so as to utilize gas to complete the purpose of cooking, heating, thawing or sterilizing food.

[0045] like Figure 2 In some embodiments of the present invention, the cooking device 100 has a gas flow channel 40, the gas flow channel 40 has a gas inlet 401 and multiple gas outlets 402, the multiple gas outlets 402 are connected to the gas inlet 401, and the cooking device 20 is connected to a part of the multiple gas outlets 402. The gas can enter the gas flow channel 40 through the gas inlet 401 and be connected to the steam device 30 to provide gas for the steam device 30.

[0046] The cooking device 20 may include one or more cooking devices, and the cooking device 20 may be a steamer, a steam oven, an electric rice cooker, etc.

[0047] The plurality of gas outlets 402 include a first outlet 402a, and the first outlet 402a is connected to the steam device 30. The first outlet 402a may include one or more. For example, a plurality of first outlets 402a may be provided to be connected to the same cooking device 20, so that gas is provided to the same cooking device 20 by using the plurality of first outlets 402a; or a plurality of cooking devices 20 may be provided, and the plurality of first outlets 402a may be connected to the plurality of cooking devices 20, so that gas is provided to the plurality of cooking devices 20; or a plurality of cooking devices 20 may be provided, and the plurality of cooking devices 20 may be connected to the same first outlet 402a, so that gas is provided to the plurality of cooking devices 20 at the same time by using the first outlet 402a.

[0048] In addition, if Figure 3 The cooking device 100 further includes a gas stove 60, and the plurality of gas outlets 402 further include a second outlet 402b, which is connected to the gas stove 60. Gas can be supplied to the gas stove 60 or the cooking device 20 through the gas flow channel 40, so that different cooking utensils can work simultaneously or separately to meet different cooking needs.

[0049] Among them, the second outlet 402b can also be set to one or more. For example, multiple second outlets 402b can be set to connect to the same gas stove 60, so that multiple second outlets 402b can be used to provide gas to the same gas stove 60; or multiple gas stoves 60 are set, and multiple second outlets 402b are connected to multiple gas stoves 60 to provide gas to multiple gas stoves 60; or multiple gas stoves 60 are set, and multiple gas stoves 60 are connected to the same second outlet 402b, so that the second outlet 402b can be used to provide gas to multiple gas stoves 60 at the same time.

[0050] In addition, the gas stove 60 or the cooking device 20 may be integrated with the functions of shutoff and on, so as to control whether the gas is passed into the gas stove 60 and the cooking device 20. Of course, in order to improve the safety of the cooking device 100, a reversing structure is also provided in the gas flow channel 40 of the present invention, so as to switch the flow direction of the gas.

[0051] like Figure 4 As shown, the gas flow channel 40 includes a first reversing component 41, which is respectively connected to a gas inlet 401 and a plurality of gas outlets 402, and is configured to selectively control the gas flowing into the gas inlet 401 to flow to one or more of the plurality of gas outlets 402. The gas flow direction in the gas flow channel 40 can be adjusted by the first reversing component 41, so as to facilitate the adjustment of the gas flow direction, effectively improve the safety of the gas flow channel 40, and avoid the risk of gas leakage.

[0052] Among them, Figure 5The first reversing assembly 41 includes a first switch valve 411, and the first switch valve 411 is connected between the gas inlet 401 and the first outlet 402a. Through the first switch valve 411, the gas inlet 401 and the first outlet 402a can be switched on and off, thereby conveniently controlling whether to supply gas to the cooking device 20, improving safety and stability, and facilitating the user to control the cooking device 100.

[0053] In addition, if Figure 5 The first reversing assembly 41 further includes a second switch valve 412, which is connected between the gas inlet 401 and the second outlet 402b. The second switch valve 412 can realize the on-off between the gas inlet 401 and the second outlet 402b, thereby conveniently controlling whether to supply gas to the cooking device 20, improving safety and stability, and facilitating the user to control the gas stove 60.

[0054] Combined with the above, Figure 5 The first reversing assembly 41 includes a first switch valve 411 and a second switch valve 412. The first switch valve 411 is connected between the gas inlet 401 and the first outlet 402a, and the second switch valve 412 is connected between the gas inlet 401 and the second outlet 402b. In this way, the first switch valve 411 and the second switch valve 412 can respectively control the opening and closing of multiple gas outlets 402 and the gas inlet 401, thereby realizing the separate control of the branch, avoiding the mutual interference between the gas stove 60 and the cooking device 20, and improving the stability of the gas flow channel 40. In addition, the first reversing assembly 41 can also be set as a three-way reversing valve, a proportional valve, etc. In addition, the first switch valve 411 and the second switch valve 412 can be set as a stop valve with a switch control function, or a flow regulating valve 341 with a flow regulating function.

[0055] like Figures 1 to 4 In some embodiments of the present invention, the cooking device 100 further includes a cabinet 10, and the cooking device 20 is integrated and installed in the cabinet 10. In addition, the cooking device 100 further includes a gas stove 60, and the gas stove 60 can be arranged on the cabinet 10, so that the gas stove 60, the cooking device 20, etc. can be integrated together through the cabinet 10.

[0056] like Figure 5 and Figure 6The steam device 30 includes a combustion chamber 31, a burner 32 and a heat exchanger 33, wherein the burner 32 is arranged in the combustion chamber 31 and is configured to be heated by gas, and the heat exchanger 33 cooperates with the combustion chamber 31 for heat exchange, so that the burner 32 can be used to heat the fluid passing through the heat exchanger 33, wherein the heat exchanger 33 has a heat exchange channel 3301, and the heat exchange channel 3301 has a fluid inlet and a fluid outlet. Through the heating effect of the burner 32, the fluid outlet of the heat exchange channel 3301 can send out steam. In addition, the heat exchange channel 3301 is connected to the steam inlet 201, so that the steam generated after being heated by the burner 32 is provided to the cooking device 100, so that the cooking device 100 can perform operations such as heating, cooking, disinfection, and thawing through steam. Among them, the fluid inlet of the heat exchange channel 3301 can be passed through liquids such as water, so that steam is generated by the heating of the burner 32, and steam can also be passed through, and superheated steam is generated by the heating of the burner 32.

[0057] The burner 32 in the present invention may be an atmospheric burner 32 or a premix burner 32 .

[0058] Take the burner 32 as an atmospheric burner 32 as an example. Figure 5 , Fig. 9 and Fig.10 In some embodiments of the present invention, the burner 32 includes an ejector tube 321, which has a first gas inlet 3201 and a first air inlet 3202. Gas can be introduced into the ejector tube 321 through the first gas inlet 3201, and air can also be introduced into the ejector tube 321 through the first air inlet 3202. The gas is ejected from the nozzle at a certain pressure and a certain flow rate, and enters the air intake contraction tube. The gas absorbs the primary air by its own energy. The gas and the primary air are mixed in the ejector, and then flow out through the fire hole in the head to burn and form a Bunsen flame.

[0059] In addition, if Figure 5 The burner 32 further includes a first fan 322, which is connected to the first air inlet 3202 and drives the airflow from the first air inlet 3202 into the ejector tube 321. By providing the first fan 322, the amount of air introduced can be increased, thereby improving the combustion efficiency of the burner 32, improving the utilization rate and combustion rate of the gas, thereby improving energy efficiency, reducing energy consumption, and saving energy and protecting the environment.

[0060] Take the burner 32 as a premix burner 32 as an example. Figure 8In some embodiments of the present invention, the steam device 30 further includes a premixing assembly 34, which has a second gas inlet 3401, a second air inlet 3402 and a mixed gas outlet 3403. The mixed gas outlet 3403 is connected to the burner 32 and provides a mixed gas of air and gas to the burner 32. The premixing assembly 34 mixes the gas and air and then introduces them into the burner 32, which can improve the mixing degree of the gas and air, facilitate the uniform mixing of the gas and air, thereby improving the combustion efficiency and energy efficiency of the burner 32, optimizing the utilization rate of the gas, and saving energy and protecting the environment.

[0061] Among them, Figure 8 The premixing assembly 34 includes a regulating valve 341, one end of which is connected to the second gas inlet 3401 and is configured to adjust the flow of the gas entering the premixing assembly 34. The regulating valve 341 can adjust the gas flow of the second gas inlet 3401, thereby adjusting the mixing of the gas and the air, so as to facilitate the adjustment of the concentration of the mixed gas, so as to provide different gas and air ratios according to different combustion requirements, and further improve the combustion efficiency.

[0062] like Figure 8 The regulating valve 341 is configured to adjust its opening according to the gas concentration of the mixed gas outlet 3403. The gas concentration of the mixed gas outlet 3403 can be used to control the gas flow rate, thereby realizing closed-loop regulation of the gas concentration, so that the gas concentration in the mixed gas outlet 3403 can reach the preset concentration range more quickly, thereby optimizing the combustion efficiency.

[0063] like Figure 8 The premixing assembly 34 also includes a venturi tube 342, one end of which is connected to the other end of the regulating valve 341. The venturi tube 342 can mix the gas and air through the venturi effect, thereby improving the mixing filtration of the gas and air, thereby providing a mixed airflow with uniformity for the mixed gas outlet 3403, so as to facilitate the combustion of the burner 32 and improve the utilization rate of the gas.

[0064] In addition, the premixing assembly 34 may further include a second fan 343, the inlet of the second fan 343 is connected to the second air inlet 3402 and the other end of the venturi tube 342, and the outlet of the second fan 343 is connected to the mixed gas outlet 3403. The second fan 343 can further improve the mixing uniformity of the gas and air, and provide more air for the burner 32, which facilitates the complete combustion of the gas and improves the utilization rate of the gas.

[0065] After the pipeline gas enters the integrated stove, in addition to being used by the gas stove, another gas branch is added. After being controlled by the first switch valve, this branch enters the burner for combustion, and sufficient air is added during the combustion process. The high-temperature flue gas generated by the combustion heats the room-temperature water, turning the water into steam. After the heat exchange, the temperature of the high-temperature flue gas is reduced and discharged through the exhaust channel of the integrated stove, while the water vapor enters the steam box to heat the food, and the steam that does not have time to exchange heat enters the exhaust channel from the steam outlet and is discharged.

[0066] The burner of this steam device is a fully premixed burner. After the air and gas are fully mixed, they are fully burned in the fully premixed burner. The high-temperature flue gas generated flows outside the water pipe. The water pipe adopts a single-channel pipeline structure. The outlet temperature of the steam can be controlled by adjusting the water pump flow, so superheated steam can be achieved. Compared with the atmospheric burner, the fully premixed burner is smaller in size and easier to install. When the steam device is working, the user cannot adjust the power, so the reliability of the fully premixed burner will be significantly improved. The flow channel water system can achieve superheated steam.

[0067] In the above-mentioned embodiment, smoke is generated during the combustion process of the burner 32, so a smoke exhaust channel 3101 is required to exhaust the smoke. Figures 5 to 9 In some embodiments of the present invention, the combustion chamber 31 has a smoke exhaust channel 3101, which is used for exhausting smoke from the steam device 30. At least a portion of the heat exchanger 33 is disposed in the combustion chamber 31 and is located between the burner 32 and the smoke exhaust channel 3101. The smoke generated during the combustion of the burner 32 can be exhausted through the smoke exhaust channel 3101, and when the smoke flows to the smoke exhaust channel 3101, it will exchange heat with the heat exchanger 33, thereby heating the fluid in the heat exchanger 33, so as to generate steam in the heat exchanger 33.

[0068] In addition, in the cooking device 20, steam is introduced into the cooking device 20 to provide steam for heating the food in the cooking device 20, and a part of the steam flowing into the cooking device 20 is discharged from the cooking device 20 after heat exchange. For this purpose, the cooking device 20 of the present invention has a steam outlet 202, and the steam outlet 202 is connected to the smoke exhaust channel 3101. Through the steam outlet 202, the unliquefied steam can be discharged, so as to avoid the steam affecting the operation of the electronic devices in the cooking device 20, and improve the stability and safety of the cooking device 20. In addition, the steam sent from the steam outlet 202 can be discharged through the smoke exhaust channel 3101, thereby improving the pipeline integration in the cooking device 100 and realizing the rapid discharge of steam.

[0069] In order to facilitate the discharge of steam, a valve may be provided between the steam outlet 202 and the smoke exhaust channel 3101 , and the valve may be arranged to allow one-way flow from the steam outlet 202 to the smoke exhaust channel 3101 and to block the direction from the smoke exhaust channel 3101 to the steam outlet 202 .

[0070] like Figure 5 , Figure 8 , Fig. 9 and Fig.10 In some embodiments of the present invention, the smoke exhaust channel 3101 can be arranged to be connected to the upper space of the combustion chamber 31, so as to facilitate the upward flow of the high-temperature flue gas generated by the burner 32, and to flow out from the smoke exhaust channel 3101 after heat exchange with the heat exchange element 33, wherein the combustion chamber 31 is arranged in the up-down direction, and the burner 32 is arranged in the lower space of the combustion chamber 31, and the smoke exhaust channel 3101 is connected to the upper space of the combustion chamber 31, and the high-temperature flue gas generated by the burner 32 exchanges heat with the heat exchange element 33 during the bottom-up flow process. Placing the burner 32 in the lower part of the combustion chamber 31 can improve the mixing uniformity between the gas and the air, thereby facilitating the uniform and effective combustion of the gas and improving the combustion efficiency. In addition, the high-temperature flue gas generated by the burner 32 will be more likely to flow upward due to the high temperature, so that the flue gas can be discharged quickly and stably.

[0071] like Fig.12 In other embodiments of the present invention, the combustion chamber 31 is arranged in the up-down direction, the burner 32 is arranged in the upper space of the combustion chamber 31, and the smoke exhaust channel 3101 is connected to the lower space of the combustion chamber 31. The high-temperature flue gas generated by the burner 32 exchanges heat with the heat exchange element 33 during the top-down circulation process. During the top-down circulation process of the high-temperature flue gas, stable heat exchange with the heat exchange element 33 can be achieved to improve the heat exchange efficiency.

[0072] Among them, the burner 32 is preferably a premixing type, and the gas and air are mixed before entering the burner 32, so that the gas and air entering the burner 32 can be mixed completely. In this way, the fluid introduced into the burner 32 has been mixed evenly, which can facilitate the stable operation of the burner 32, avoid the problem of air and gas being unable to be completely mixed due to stratification in the burner 32, and improve the combustion efficiency and effect of the gas.

[0073] In addition, by placing the burner 32 upward, the high-temperature flue gas flows into the exhaust channel 3101 for a longer time compared to the solution in which the burner 32 is placed downward, thereby providing the high-temperature flue gas with more time to exchange heat with the heat exchange element 33, thereby increasing the heat exchange time between the flue gas and the heat exchange element 33, so that the flue gas can transfer more heat to the heat exchange element 33, thereby achieving full utilization of energy, reducing heat waste, and saving energy and protecting the environment.

[0074] In combination with the above, the cooking device 20 of the present invention has the function of steam cooking, such as Fig.13 In some embodiments of the present invention, the cooking device 20 has a steam cavity 203 and a cooking cavity 204, the steam cavity 203 is connected to the cooking cavity 204, and the steam inlet 201 is connected to the steam cavity 203. Steam can be introduced into the cooking device 20 for cooking through the steam cavity 203, wherein the steam cavity 203 can be separated from the cooking cavity 204, so that the heat of the steam can be used to heat the wall of the cooking cavity 204, and then heat the food in the cooking cavity 204; the steam cavity 203 can also be connected to the cooking cavity 204, so that steam can be introduced into the cooking cavity 204 through the steam cavity 203, providing steam for the cooking cavity 204 for cooking, thereby improving the steam cooking effect.

[0075] like Fig.13 In some embodiments of the present invention, the steam cavity 203 and the cooking cavity 204 are separated by a partition 23, and a through hole is provided on the partition 23 to connect the steam cavity 203 and the cooking cavity 204. The steam cavity 203 and the cooking cavity 204 are sealed by the partition 23, and the through hole is provided thereon, so that steam can flow from the steam cavity 203 to the cooking cavity 204, so as to facilitate cooking with steam.

[0076] The partition 23 may be configured as a perforated plate with a plurality of through holes arranged thereon, so that the steam in the steam cavity 203 can flow into the cooking cavity 204 more evenly, thereby improving the cooking effect.

[0077] In some embodiments of the present invention, the partition 23 is configured as a perforated plate, and the density of the openings on the partition 23 is not less than 0.01 per mm. 2 , and no more than 1 / mm 2 In this way, the through holes can be evenly arranged on the partition 23, improving the uniformity of the steam sent from the steam cavity 203 to the cooking cavity 204, thereby further improving the cooking effect. The opening density on the partition 23 can be set to 0.01 / mm 2 , 0.05pcs / mm 2 , 0.1pcs / mm 2 , 0.85pcs / mm 2 or 1 piece / mm 2 The opening density reflects the number of through holes set in an area of ​​the same size. For example, the opening density is 0.01 / mm 2 It means that there are 0.01 through holes per square millimeter on the partition 23, that is, there is one through hole per 100 square millimeters; the opening density is 1 / mm 2 This means that one through hole is provided per square millimeter on the partition plate 23 .

[0078] In addition, in other embodiments of the present invention, the water pipe can also be connected to the cooking cavity 204. The cooking device 20 has a cooking cavity 204 for placing food to be cooked, and the water pipe can also introduce steam into the cooking cavity 204 for cooking, and a steam cavity may not be provided.

[0079] like Fig.14 The cooking device 20 in the present invention can also be set as an oven heated by flue gas. The cooking device 100 may include a steam device 30 and a cooking device 20. The steam device 30 may include a combustion chamber 31 and a burner 32. The burner 32 is arranged in the combustion chamber 31 for heating by gas. The cooking device 20 also includes a flue gas channel 205. The flue gas channel 205 has a flue gas inlet 206 and a flue gas outlet 207. The flue gas inlet 206 is connected to the combustion chamber 31 and is used to introduce flue gas to heat the food. The flue gas outlet 207 is used to discharge the flue gas. Thus, the flue gas in the combustion chamber 31 can be guided into the flue gas channel 205, and heat exchange is carried out with the cooking cavity 204 of the cooking device 20 in the flue gas channel 205, so as to achieve the purpose of heating the food in the cooking cavity 204 by using the flue gas channel 205. Through the present invention, the purpose of frying and grilling by using flue gas can be achieved, the cooking method of the cooking device 100 is expanded, and different cooking needs are further met, thereby improving the taste of the cooked food.

[0080] In addition, the cooking device 100 has a smoke exhaust port 101 for exhausting smoke, and the smoke outlet 207 is connected to the smoke exhaust port 101. The smoke exhaust port 101 can be used for exhausting smoke from the cooking device 100, and the smoke outlet 207 can be connected to the smoke exhaust port 101, so that smoke can be exhausted by using the smoke exhaust port 101, which can improve the integration of the smoke duct in the cooking device 100, so as to simplify the structure of the cooking device 100 and facilitate the exhaust of smoke from the cooking device 100.

[0081] like Fig.10 The combustion chamber 31 has an inlet connected to the inner cavity of the combustion chamber 31 and an outlet connected to the exhaust passage 3101 of the exhaust port 101. The smoke after heat exchange in the combustion chamber 31 can be discharged through the exhaust passage 3101, thereby improving the stability of the steam device 30.

[0082] The smoke exhaust channel 3101 is connected in parallel with the smoke channel 205. That is, the smoke in the combustion chamber 31 can be discharged through the smoke exhaust channel 3101, or heat the cooking device 20 through the smoke channel 205, and the smoke passing through the smoke exhaust channel 3101 and the smoke passing through the smoke channel 205 will be discharged through the smoke exhaust port 101, which simplifies the smoke channel in the cooking device 100, reduces the number of connection points of the smoke channel in the cooking device 100, avoids smoke leakage, and thus improves the stability and safety of the cooking device 100.

[0083] In order to facilitate the selection of the flow direction of the flue gas, the steam device 30 further includes a second reversing component 35, which is respectively connected to the combustion chamber 31 and the flue gas passage 205, and controls the flue gas in the combustion chamber 31 to selectively pass through the flue gas passage 205. The second reversing component 35 can select the flow direction of the flue gas in the combustion chamber 31, thereby facilitating the adjustment of the flow direction of the flue gas, effectively improving the safety of the flue, and avoiding the risk of flue gas leakage.

[0084] like Fig.10 The second reversing assembly 35 includes a third switch valve 351, one end of the third switch valve 351 is connected to the combustion chamber 31, and the other end is connected to the smoke inlet 206. Through the third switch valve 351, the combustion chamber 31 and the smoke inlet 206 can be switched on and off, so as to facilitate control of whether smoke is supplied to the cooking device 20, improve safety and stability, and facilitate users to control the cooking device 100.

[0085] like Fig.10 , one end of the third switch valve 351 is connected to the space of the combustion chamber 31 downstream of the heat exchanger 33. Thus, the flue gas passing through the heat exchanger 33 can be effectively utilized, so as to fully utilize the heat of the flue gas in the combustion chamber 31, improve energy utilization, and save energy and protect the environment. In addition, it can also avoid exhausting the flue gas that has not passed through the heat exchanger 33, which affects the heat exchange efficiency of the heat exchanger 33 and reduces the impact on the heating efficiency of the heat exchanger 33. Of course, one end of the third switch valve 351 in the present invention can also be connected to the position of the combustion chamber 31 corresponding to the heat exchanger 33, and can even be set in the space of the combustion chamber 31 upstream of the heat exchanger 33.

[0086] like Fig.10 The cooking device 100 has a smoke exhaust port 101, and the second reversing component 35 further includes: a fourth switch valve 352, one end of the fourth switch valve 352 is connected to the outlet of the smoke exhaust channel 3101 of the combustion chamber 31, and the other end is connected to the smoke exhaust port 101. Through the fourth switch valve 352, the smoke exhaust channel 3101 and the smoke exhaust port 101 can be switched on and off, so that the smoke exhaust channel 3101 and the smoke exhaust port 101 are connected or disconnected. When the smoke exhaust channel 3101 and the smoke exhaust port 101 are disconnected, the smoke that originally needs to be discharged through the smoke exhaust channel 3101 will be discharged through the smoke channel 205, so as to achieve the use of the heat of the smoke to heat the cooking device 20; when the smoke exhaust channel 3101 and the smoke exhaust port 101 are connected, the smoke can be discharged through the smoke exhaust channel 3101, so as to facilitate the rapid discharge of smoke during the cooking process, improve the discharge efficiency, etc., thereby improving the stability and safety of the cooking device 100.

[0087] like Fig.10The smoke outlet 207 is connected to the smoke exhaust port 101. The smoke outlet 207 can be connected between the fourth switch valve 352 and the smoke exhaust port 101. In this way, the smoke entering the smoke channel 205 can be easily discharged through the smoke exhaust port 101, which can improve the safety and stability of the cooking device 100 and prevent the smoke from affecting the taste of food.

[0088] The cooking device 20 also includes a cooking cavity 204, which is used to cook food. The smoke passage 205 is separated from the cooking cavity 204 and cooperates with heat exchange. By separating the smoke passage 205 from the cooking cavity 204, it is convenient for smoke to heat food, and it is also possible to avoid smoke contacting food and affecting the taste of food, thereby effectively improving the cooking effect of food. The taste of cooked food is optimized to meet various cooking needs.

[0089] like Figures 14 to 16 In some embodiments of the present invention, the cooking device 20 further includes a housing 22, the inner side of the housing 22 forms a closed inner cavity, and the smoke passage 205 is arranged in the inner cavity. The smoke can be sealed in the housing 22 to prevent smoke leakage.

[0090] Among them, the cover shell 22 can be stacked on the wall of the cooking cavity 204, and the cover shell 22 can be used to heat the wall of the cooking cavity 204, so that the smoke can be used to directly heat the wall of the cooking cavity 204, which is convenient for heating the ingredients and can provide a cooking method with a higher temperature than steam heating, optimize various cooking methods, and meet different taste requirements.

[0091] In addition, if Fig.15 , the cover 22 can also be inserted into the cooking cavity 204. Thus, multiple surfaces of the cover 22 can be used to heat the cooking cavity 204, which can improve the heating efficiency in the cooking cavity 204 and facilitate heating of the food in the cooking cavity 204. At the same time, the cover 22 can be set so that food can be placed on multiple surfaces for cooking, thereby optimizing the cooking efficiency.

[0092] In some embodiments of the present invention, the cover 22 covers the wall of the cooking cavity 204, and an inner cavity is constructed between the cover 22 and the wall of the cooking cavity 204. In this way, the wall of the cooking cavity 204 can be directly in contact with the smoke, so that the smoke can directly heat the wall of the cooking cavity 204, thereby improving the heating temperature and heating efficiency, reducing the heat waste caused by heat conduction, and saving energy and protecting the environment.

[0093] In other embodiments of the present invention, an inner cavity can also be constructed inside the cover shell 22, that is, the cover shell 22 itself is formed with an inner cavity for smoke circulation. In this way, compared with forming an inner cavity between the cover shell 22 and the wall of the cooking cavity 204, the sealing performance of the inner cavity can be improved.

[0094] like Figure 6 and Figure 7 In some embodiments of the present invention, the heat exchange member 33 includes a water pipe 33a, at least a portion of which is disposed in the combustion chamber 31, and a heat exchange channel 3301 is formed in the water pipe 33a, so that the fluid entering the water pipe 33a can pass through the combustion chamber 31 to absorb the heat in the combustion chamber 31. Water can be passed into the water pipe 33a, and when the water flows through the water pipe 33a, it can be heated in the combustion chamber 31, and after being heated to generate steam, it is discharged from the outlet of the water pipe 33a and sent to the cooking device 20. The structure is simple, and it is convenient to quickly generate high-temperature steam, thereby improving the heating efficiency of the cooking device 100.

[0095] In the present invention, after the pipeline gas enters the cooking device (which may be an integrated stove), in addition to being used by the gas stove, another gas branch is added. After being controlled by the first switch valve, the branch enters the burner for combustion, and sufficient air is added during the combustion process. The high-temperature flue gas generated by the combustion heats the normal-temperature water to turn the water into steam. After the heat exchange, the temperature of the high-temperature flue gas is reduced and discharged through the exhaust channel of the integrated stove, while the water vapor enters the steam box to heat the food, and the steam that does not have time to exchange heat enters the exhaust channel from the steam outlet and is discharged.

[0096] The burner of the steam device is an atmospheric burner. The fan supplements the secondary air. The high-temperature flue gas generated flows outside the water pipe. The water pipe adopts a single-channel pipeline structure. The outlet temperature of the steam can be controlled by adjusting the flow of the water pump, so superheated steam can be achieved. The burner and heat exchange system have a simple structure, high reliability, and can achieve superheated steam.

[0097] Breaking the limitation of electric power, using gas combustion to generate steam to heat the food. Different steam volumes can be achieved by designing the power of gas combustion and the heat exchange efficiency between high-temperature flue gas and water.

[0098] like Figure 6 and Figure 7 The water pipe 33a includes a plurality of heat exchange pipe segments 331a, and the heat exchange pipe segments 331a are arranged in the combustion chamber 31. The plurality of heat exchange pipe segments 331a can exchange heat with the internal flue gas of the combustion chamber 31, and can improve the heating efficiency of the water pipe 33a. Among them, the plurality of heat exchange pipe segments 331a can be arranged in parallel or in series. When the plurality of heat exchange pipe segments 331a are connected in parallel, the total area of ​​the heat exchange flow channel 3301 can be increased, thereby increasing the flow area and facilitating the improvement of the heating efficiency. When the plurality of heat exchange pipe segments 331a are connected in series, the length of the heat exchange flow channel 3301 can be increased, and the fluid can be heated by the plurality of heat exchange pipe segments 331a, thereby extending the heating time of the fluid, thereby improving the heating efficiency and the steam temperature.

[0099] The two ends of the heat exchange pipe section 331a are respectively connected to the opposite side walls of the combustion chamber 31. The heat exchange pipe section 331a can be supported by the opposite side walls of the combustion chamber 31, and the stability of the heat exchange pipe section 331a can be improved, so that the heat exchange pipe section 331a can be stably installed in the combustion chamber 31, the structural stability of the steam device 30 is improved, and the service life of the cooking device 100 is improved.

[0100] like Figure 6 and Figure 7 In some embodiments of the present invention, the water pipe 33a further includes a connecting pipe section 332a, and a plurality of heat exchange pipe sections 331a are connected end to end through the connecting pipe section 332a to form a circuitous extending tube. Thus, the length of the water pipe 33a can be extended to extend the circulation time of the fluid in the water pipe 33a, facilitate better heating, effectively improve the heating efficiency and the temperature of the steam, and facilitate providing a better cooking effect.

[0101] like Figure 6 , the connecting pipe section 332a is arranged outside the combustion chamber 31. Thus, the production, processing and maintenance of the steam device 30 can be facilitated. During the manufacturing process of the steam device 30, the heat exchange pipe section 331a can be passed through the combustion chamber 31 and welded to the side wall of the combustion chamber 31. Then, the connecting pipe section 332a is arranged outside the combustion chamber 31 and welded to the heat exchange pipe section 331a, so as to realize the connection between multiple heat exchange pipe sections 331a. In this way, the welding of the heat exchange pipe section 331a and the side wall of the combustion chamber 31 can be facilitated to avoid the problems of welding leakage.

[0102] In some embodiments of the present invention, a plurality of heat exchange pipe segments 331a are arranged side by side in the vertical direction and staggered front to back, and there is a gap between adjacent heat exchange pipe segments 331a for flue gas to pass through, thereby facilitating heat exchange between flue gas and heat exchange pipe segments 331a, improving heat exchange efficiency and heat exchange stability between flue gas and heat exchange pipe segments 331a, and facilitating the provision of more steam.

[0103] In the aforementioned embodiment, the fluid is introduced into the water pipe 33a, and the water pipe 33a is heated by the flue gas, so that the temperature of the fluid passing through the water pipe 33a can be quickly exchanged with the flue gas, thereby improving the heating efficiency of the fluid and simplifying the structure of the steam device 30. In the present invention, the flue gas can also be arranged in the pipeline, and the flue gas can be used to exchange heat with the fluid arranged in the heat exchange element 33 through the pipeline, which can also achieve the purpose of heating the fluid to generate steam.

[0104] like Fig.11In some embodiments of the present invention, at least a portion of the heat exchange element 33 is disposed in the combustion chamber 31, and the portion of the heat exchange element 33 located in the combustion chamber 31 is provided with a flue gas flow channel 3302, which is configured to allow flue gas generated by the burner 32 to pass through, and when the flue gas flows through the flue gas flow channel 3302, the flue gas exchanges heat with the fluid in the heat exchange flow channel 3301. The flue gas flow channel 3302 facilitates the passage of flue gas, and heats the fluid when the flue gas passes through, which can effectively improve the heating efficiency of the fluid.

[0105] like Fig.11 The combustion chamber 31 has a first part and a second part that are opposite to each other, the burner 32 is arranged in the first part, the second part is connected to the exhaust passage 3101, at least a part of the heat exchange element 33 is arranged between the first part and the second part, and the smoke flow passage 3302 communicates the first part and the second part. After the burner 32 generates smoke, the smoke will be discharged through the smoke exhaust passage 3101 after passing through the smoke flow passage 3302 and exchanging heat with the fluid in the heat exchange flow passage 3301.

[0106] The flue gas flow passage 3302 is configured to extend from the first portion to the second portion, so that flue gas can pass through the flue gas flow passage 3302 , and the accumulation of flue gas in the steam device 30 can be avoided, which may lead to excessive pressure in the combustion chamber 31 , thereby improving the stability and safety of the steam device 30 .

[0107] In some embodiments, the first end of the smoke flow channel 3302 is used for smoke intake, and the first end of the smoke flow channel 3302 is connected to the part of the combustion chamber 31 where the burner 32 is arranged, and the first end of the smoke flow channel 3302 gradually shrinks in the direction of smoke intake. The structure in which the first end of the smoke flow channel 3302 gradually shrinks inward can form a guiding effect on the smoke, so that the smoke can smoothly enter the smoke flow channel 3302, facilitate the circulation of the smoke, and improve the heat exchange efficiency between the smoke and the heat exchange element 33.

[0108] In some embodiments, the second end of the smoke flow channel 3302 is used for smoke discharge, and the second end of the smoke flow channel 3302 is connected to the smoke exhaust channel 3101 of the combustion chamber 31, and the second end of the smoke flow channel 3302 gradually expands outward in the smoke discharge direction. The structure of the second end of the smoke flow channel 3302 gradually expanding outward can form a guiding effect on the smoke, so that the smoke can flow out of the smoke flow channel 3302 smoothly, facilitate the circulation of the smoke, avoid turbulence after the smoke is discharged from the smoke flow channel 3302, and improve the smoothness and stability of the smoke circulation.

[0109] The heat exchange element 33 extends along the flue gas flow direction in the combustion chamber 31. The structure of the steam device 30 can be simplified, and the assembly, maintenance and disassembly of the steam device 30 can be facilitated.

[0110] like Fig.11In some embodiments, the heat exchange element 33 includes a shell 331b and a smoke pipe 332b, a heat exchange channel 3301 is constructed in the shell 331b, and the smoke pipe 332b is arranged in the shell 331b, and the two ends are respectively connected to the opposite sides of the shell 331b. It is convenient for the smoke to pass through the smoke pipe 332b and exchange heat with the fluid in the heat exchange channel 3301 during the process of passing through the smoke pipe 332b.

[0111] The opposite side walls of the shell 331b are respectively provided with through holes, and the peripheries of both ends of the shell 331b are respectively connected to the opposite side walls and to the peripheries of the through holes at corresponding positions. This can simplify the structure of the heat exchanger 33, improve the structural stability of the heat exchanger 33, and facilitate the flow of flue gas through the smoke pipe 332b, thereby improving the heat exchange efficiency and energy efficiency.

[0112] The heat exchange element 33 is sleeved on the inner side of the peripheral wall of the combustion chamber 31 and extends along the flue gas flow direction in the combustion chamber 31. This facilitates the flow of flue gas, improves the heat exchange efficiency between the flue gas and the fluid in the heat exchange flow channel 3301, and improves energy efficiency.

[0113] In some embodiments, the flue gas flow channel 3302 includes a plurality of flue gas flow channels 3302. Thus, the flue gas flow channels 3302 can be dispersed to provide more heating points for the heat exchange element 33 (each flue gas flow channel 3302 constitutes a heating point), thereby improving the heating effect and heating power of the fluid in the heat exchange flow channel 3301.

[0114] In some embodiments of the present invention, the plurality of flue gas flow passages 3302 are parallel to each other, which can facilitate the flow of flue gas and the processing and production of the heat exchange element 33.

[0115] In some embodiments, in a cross section perpendicular to the flue gas flow direction in the combustion chamber 31, the multiple flue gas flow passages 3302 are configured in a mesh shape. The multiple flue gas flow passages 3302 can surround multiple areas, and the multiple flue gas flow passages 3302 can heat the areas surrounded by them, thereby increasing the contact area between the fluid and the wall of the flue gas flow passage 3302, and greatly improving the heating effect on the fluid by heating the multiple flue gas flow passages 3302.

[0116] In some embodiments, the flue gas flow channel 3302 is in the shape of a long strip extending along the exhaust direction of the combustion chamber 31, and the flue gas flow channel 3302 is constructed as a straight channel, a curved channel or a folded line channel. The flue gas flow channel 3302 of the present invention can preferably have a variety of forms, and the flow path of the flue gas can be extended by setting the flue gas flow channel 3302 in the form of a curve or a folded line, and the heat exchange time between the flue gas and the fluid in the heat exchange element 33 can be increased to improve the heat exchange efficiency and heating function. In addition, the flue gas flow channel 3302 can also be set as a straight path, so as to facilitate the circulation of the flue gas, so that the flue gas can circulate quickly, and avoid affecting the operation of the burner 32 due to the poor circulation of the flue gas. At the same time, the linear flue gas flow channel 3302 can also simplify the structure of the heat exchange element 33, and facilitate the production and processing of the steam device 30.

[0117] In some embodiments, in a cross section perpendicular to the direction of flue gas flow in the combustion chamber 31, the ratio of the total area of ​​the flue gas flow channel 3302 to the total area of ​​the heat exchange element 33 is in the range of 0.1 to 0.9. For example, the ratio may be 0.1, 0.2, 0.35, 0.46, 0.51, 0.68, 0.85, 0.9, etc. Preferably, the ratio is in the range of 0.3 to 0.5. Among them, the excessive area of ​​the flue gas flow channel 3302 can be avoided from affecting the fluid volume in the heat exchange element 33, and the structural strength of the heat exchange element 33 can also be avoided. At the same time, it can also ensure that there is a large heat exchange area between the fluid in the flue gas flow channel 3302 and the heat exchange flow channel 3301, effectively improving the heat exchange efficiency.

[0118] In some embodiments, it is characterized in that, in a cross section perpendicular to the direction of the flue gas flow in the combustion chamber 31, the arrangement density of the flue gas flow channel 3302 is not less than 0.01 / mm 2 , and no more than 1 / mm 2 For example, the arrangement density of the flue gas flow channel 3302 can be set to 0.01 / mm 2 , 0.05pcs / mm 2 , 0.1pcs / mm 2 , 0.85pcs / mm 2 or 1 piece / mm 2 The arrangement density of the flue gas flow passages 3302 reflects the number of flue gas flow passages 3302 arranged in an area of ​​the same size. For example, the opening density is 0.01 / mm 2 It means that 0.01 flue gas flow channel 3302 is arranged per square millimeter, that is, one flue gas flow channel 3302 is arranged per 100 square millimeters; the arrangement density of the flue gas flow channel 3302 is 1 / mm 2 This means that one through hole is provided per square millimeter.

[0119] like Figures 5 to 12In some embodiments of the present invention, in order to facilitate the passage of fluid through the heat exchange channel 3301, the cooking device 100 further includes: a water pump 50, the water pump 50 is connected to the steam device 30 to drive the fluid to flow into the steam device 30, and is suitable for controlling the flow rate of the fluid entering the steam device 30, wherein the water pump 50 can be configured to control the pumping flow rate entering the water pump 50 according to the temperature of the fluid sent out by the steam device 30. Through the water pump 50, the fluid can be stably sent into the heat exchange channel 3301 for heating, thereby improving the stability of the fluid circulation. In addition, the water pump 50 can also adjust the flow rate, flow rate, etc. of the fluid pumped into the heat exchange channel 3301, so as to adjust the fluid temperature at the outlet of the heat exchange channel 3301.

[0120] In some embodiments, the cooking device 100 further includes a temperature sensor, which is configured to detect the temperature of the fluid delivered by the heat exchange channel 3301, and the pumping flow rate of the water pump 50 is adapted to be adjusted according to the detection of the temperature sensor. Thus, the pumping flow rate of the water pump 50 can be adjusted by the detection of the temperature sensor, which facilitates the adjustment of the outlet temperature of the heat exchange channel 3301, facilitates the control of the cooking device 100, and effectively improves the stability and safety of the cooking device 100.

[0121] In other embodiments, the cooking device 100 further includes: a temperature sensor, the temperature sensor is configured to detect the temperature of the fluid delivered by the heat exchange flow channel 3301, and the amount of gas introduced into the burner 32 is suitable for adjustment according to the detection of the temperature sensor. In other words, the temperature of the fluid at the outlet of the heat exchange flow channel 3301 can also be adjusted by adjusting the flow rate of the gas. Of course, the flow rate of the gas and the flow rate of the fluid pumped into the heat exchange flow channel 3301 can also be adjusted at the same time to adjust the outlet temperature of the heat exchange flow channel 3301.

[0122] In some embodiments, the water inlet of the heat exchange channel 3301 is lower than the steam outlet, so that the fluid can be heated for a longer time, and the fluid can be prevented from flowing out of the heat exchange channel 3301 quickly under the action of gravity, thereby increasing the heating time of the fluid and improving the utilization rate of energy. In addition, the steam outlet of the heat exchange channel 3301 can also be set at the upper part of the heat exchange channel 3301. This can increase the temperature of the steam.

[0123] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0124] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0125] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0126] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0127] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A cooking device (100), characterized in that: include: A cooking device (20), wherein the cooking device (20) has a steam inlet (201); A steam device (30), the steam device (30) comprising a combustion chamber (31), a burner (32) and a water pipe (33a), the burner (32) being arranged in the combustion chamber (31) and configured to be heated by gas, at least a portion of the water pipe (33a) being arranged in the combustion chamber (31) and cooperating with the combustion chamber (31) for heat exchange, the water pipe (33a) being connected to the steam inlet (201) to supply steam to the cooking device (100).

2. The cooking device (100) according to claim 1, characterized in that: The water pipe (33a) comprises a plurality of heat exchange pipe sections (331a), and the heat exchange pipe sections (331a) are arranged through the combustion chamber (31).

3. The cooking device (100) according to claim 2, characterized in that: Both ends of the heat exchange pipe section (331a) are respectively connected to opposite side walls of the combustion chamber (31).

4. The cooking device (100) according to claim 2, characterized in that: The water pipe (33a) further comprises a connecting pipe section (332a), and the plurality of heat exchange pipe sections (331a) are connected end to end through the connecting pipe section (332a) to form a tubular shape extending in a circuitous manner.

5. The cooking device (100) according to claim 4, characterized in that: The connecting pipe section (332a) is arranged outside the combustion chamber (31).

6. The cooking device (100) according to claim 2, characterized in that: The plurality of heat exchange pipe sections (331a) are arranged side by side in the up-down direction and staggered front to back, and there is a gap between adjacent heat exchange pipe sections (331a) for smoke to pass through.

7. The cooking device (100) according to any one of claims 1 to 6, characterized in that: The burner (32) is an atmospheric burner (32), and the burner (32) comprises: An ejector pipe (321), wherein the ejector pipe (321) has a first fuel gas inlet (3201) and a first air inlet (3202); A first fan (322), wherein the first fan (322) is connected to the first air inlet (3202) and drives an air flow from the first air inlet (3202) into the ejector pipe (321).

8. The cooking device (100) according to any one of claims 1 to 6, characterized in that: The burner (32) is a premix burner (32), and the steam device (30) further comprises: A premixing assembly (34), wherein the premixing assembly (34) has a second gas inlet (3401), a second air inlet (3402) and a mixed gas outlet (3403), wherein the mixed gas outlet (3403) is connected to the burner (32) and provides a mixed gas of air and gas to the burner (32).

9. The cooking device (100) according to claim 8, characterized in that: The premixing assembly (34) comprises: a regulating valve (341), one end of the regulating valve (341) being connected to the second fuel gas inlet (3401), and the regulating valve (341) being configured to adjust its opening according to the fuel gas concentration at the mixed gas outlet (3403); A venturi tube (342), one end of the venturi tube (342) being connected to the other end of the regulating valve (341); A second fan (343), wherein the inlet of the second fan (343) is connected to the second air inlet (3402) and the other end of the venturi tube (342), and the outlet of the second fan (343) is connected to the mixed gas outlet (3403).

10. The cooking device (100) according to claim 1, characterized in that: The combustion chamber (31) has a smoke exhaust channel (3101), and the smoke exhaust channel (3101) is used for exhausting smoke from the steam device (30). At least a portion of the water pipe (33a) is arranged in the combustion chamber (31) and is located between the burner (32) and the smoke exhaust channel (3101).

11. The cooking device (100) according to claim 10, characterized in that: The cooking device (20) has a steam outlet (202), and the steam outlet (202) is connected to the smoke exhaust channel (3101).

12. The cooking device (100) according to claim 1, characterized in that: The cooking device (20) comprises a steam cavity (203) and a cooking cavity (204); the steam cavity (203) is in communication with the cooking cavity (204); and the steam inlet (201) is in communication with the steam cavity (203).

13. The cooking device (100) according to claim 12, characterized in that: The steam cavity (203) and the cooking cavity (204) are separated by a partition (23), and a through hole is provided on the partition (23) for connecting the steam cavity (203) and the cooking cavity (204), and the partition (23) is configured as a perforated plate, and the density of the openings on the partition (23) is not less than 0.01 per mm 2 , and no more than 1 / mm 2 .

14. The cooking device (100) according to claim 1, characterized in that: The cooking device (20) has a cooking cavity (204), and the water pipe (33a) is connected to the cooking cavity (204).

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