Food steam instant heating furnace

Abstract

When a three-way valve is communicated with a second auxiliary smoke exhaust pipe, high-temperature gas generated after combustion can heat a tray, heat in the high-temperature gas is recycled, the energy-saving and consumption-reducing effects are achieved, and meanwhile when the tray is heated and encounters steam, the heat in the high-temperature gas can be recycled, so that the food steam instant heating furnace can be used for heating food steam. The steam is not easy to condense into water drops, so that the generation amount of condensed water is reduced, and the steam is suitable for heating some foods (such as pastries) which need to be kept dry and comfortable; when the three-way valve is communicated with the first auxiliary smoke exhaust pipe, the linkage mechanism drives the cover plate to open the auxiliary air inlet to cooperate with the operation of the first exhaust fan, and air flow can be formed among the auxiliary air inlet, the second auxiliary smoke exhaust pipe, the air inlet pipeline, the tray, the air outlet pipeline, the first exhaust fan and the main air outlet pipe, so that the temperature of the tray is reduced; and after the bottom of the tray encounters steam, the generation amount of condensed water is increased, and the steam is suitable for heating some high-moisture food (such as fishes).

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen equipment, in particular to a food steam instant heating stove. Background Art

[0002] Food steam heating furnace is a commercial kitchen equipment, mainly used for quickly heating or steaming food with high-temperature steam. It is commonly found in breakfast shops, snack bars, canteens and other places. Food steam heating furnace generates high-temperature steam by heating water, which can quickly penetrate the interior of the food and lock in moisture; at the same time, the superheated steam can allow excess oil in the food to seep out, reducing the intake of oil and salt.

[0003] When food is steamed, some condensation will be produced. For some high-moisture foods (such as fish), the condensation dripping into the bowl can replenish the food's moisture, prevent the meat from becoming dry and tough, and enhance the flavor. This is especially suitable for meat that is steamed for a long time. For some foods that need to be kept dry (such as pastries), the dripping condensation will cause the pastries to collapse. Therefore, how to control the amount of condensation produced according to different foods has become an urgent problem that needs to be solved. Summary of the Invention

[0004] The object of the present invention is to provide a food steam instant heating oven which has the function of controlling the amount of condensed water generated.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a food steam instant heating stove, comprising a stove body with a combustion chamber and a heating chamber, a water tank arranged at the bottom of the heating chamber, a gas heating mechanism arranged in the combustion chamber and heating the bottom of the water tank, a plurality of trays plugged into the heating chamber, and a stove door arranged on the instant heating stove body and opening or closing the heating chamber. The tray is hollow, an air inlet pipe is arranged on one side of the stove body, an air outlet pipe is arranged on the other side of the stove body, a plurality of air inlet connecting ports are arranged between the air inlet pipe and the heating chamber, and a plurality of air outlet connecting ports are arranged between the air outlet pipe and the heating chamber; vents are arranged on the left and right sides of the tray, which are connected to the air inlet connecting port and the air outlet connecting port after installation; a first exhaust fan is arranged on the stove body, which is connected to the upper end of the air outlet pipe with the air inlet port; a extraction mechanism for extracting high-temperature gas generated after combustion of the gas heating mechanism is provided on the stove body, and the extraction mechanism includes a main exhaust fan connected to the combustion chamber and a tube connecting the discharging opening of the second end of the combustion chamber to the outlet port of the second exhaust fan and the outlet port of the third end of the combustion chamber to allow the combustion chamber to cool down and the combustion chamber to cool off.

[0006] By adopting the above technical solution, during the use of the food steam instant heating stove, when the three-way valve is connected to the second auxiliary exhaust pipe, the high-temperature gas generated after combustion is discharged through the main exhaust pipe, the second exhaust fan, the three-way valve, the second auxiliary exhaust pipe, the air inlet pipe, the tray, the air outlet pipe, the first exhaust fan, and the main air outlet pipe. At this time, the tray can be heated during the process, and the heat in the high-temperature gas is recycled and utilized, which has the effect of energy saving and consumption reduction. At the same time, after the tray is heated, when it encounters steam, the steam is not easy to condense into water droplets, which reduces the amount of condensed water generated, and is suitable for steam heating some foods that need to be kept dry (such as cakes); when the three-way valve is connected to the first auxiliary exhaust pipe, the high-temperature gas is discharged from the main exhaust pipe. The smoke is discharged through the smoke pipe, the second exhaust fan, the three-way valve, the first auxiliary exhaust pipe, and the main exhaust pipe. At this time, the linkage mechanism drives the cover to open the auxiliary air inlet. In conjunction with the operation of the first exhaust fan, air flow will be formed among the auxiliary air inlet, the second auxiliary exhaust pipe, the air inlet pipe, the tray, the air outlet pipe, the first exhaust fan, and the main exhaust pipe, thereby reducing the temperature of the tray, so that the bottom of the tray encounters steam and the amount of condensed water increases, which drips into the container for holding food on the tray below, which is suitable for steam heating some high-moisture food (such as fish); in addition, among the two high-temperature gas emission methods, one is to reduce the temperature by heat exchange, and the other is to reduce the temperature by mixing the lowered temperature air, reducing thermal NO X production, reducing nitrogen oxide emissions and having an environmental protection effect.

[0007] The present invention is further configured as follows: a first plug-in slot is provided in the heating chamber and extends obliquely downward toward the rear side of the heating chamber; first plug-in parts that match the first plug-in slot and are inclined are provided on both sides of the tray; the vent is provided below the first plug-in part; a sac that deforms during force is provided at the lower end of the first plug-in part; an annular hollow sealing ring surrounding the vent is provided on the side of the tray; a connecting pipe is provided between the annular hollow sealing ring and the sac; when the first plug-in part of the tray is plugged into place, the sac is squeezed, and the gas in the sac enters the annular hollow sealing ring so that the annular hollow sealing ring expands and presses against the inner wall of the heating chamber to achieve sealing of the connection of the vent.

[0008] By adopting the above technical solution, since it involves the recycling of high-temperature gas, and high-temperature gas contains some harmful gases after combustion, it is necessary to seal the connection of the vent to prevent the high-temperature gas from entering the heating chamber; at this time, by setting the inclined plug-in groove and the inclined plug-in part, the tray will not move due to the existence of gravity after installation, and when the inclined plug-in part of the tray is plugged into place, the capsule is squeezed, and the gas in the capsule enters the annular hollow sealing ring so that the annular hollow sealing ring expands and presses against the inner wall of the heating chamber to achieve sealing of the connection of the vent.

[0009] The further arrangement of the present application is that the heating chamber is provided with a second insertion slot extending along the horizontal direction, the two sides of the tray are provided with a second insertion part matched with the second insertion slot, the bottom of the second insertion slot is provided with a limiting slot, the second insertion part can move downward and be embedded in the limiting slot after moving to the position of the limiting slot, the two sides of the heating chamber are respectively provided with a plurality of connecting air inlet and air outlet connecting ports and an air receiving pipe with an upward opening, the two sides of the tray are provided with an insertion pipe with a downward opening and inserted into the air receiving pipe during the movement of the tray to the limiting slot, and the inner ring of the air receiving pipe is provided with a rubber sealing ring for abutting against the peripheral side of the insertion pipe.

[0010] By adopting the above technical scheme, during the installation of the tray, the second insertion part can move downward and be embedded in the limiting slot after moving to the position of the limiting slot, so as to limit the tray, and during the downward movement of the tray, the insertion pipes on the two sides of the tray are used for being inserted into the air receiving pipes, so as to seal the connecting part of the air vents, and avoid that the high-temperature gas generated after combustion enters into the heating chamber during the flow process.

[0011] The further arrangement of the present application is that the second smoke exhaust pipe is provided with a containing box surrounding the peripheral side of the auxiliary air inlet and not affecting the movement of the cover plate, a plurality of ice bags are placed in the containing box, a drip pipe extending above the water tank of the furnace body is arranged on the containing box, and a end cover is hingedly arranged at one end of the drip pipe above the water tank, and the end cover realizes the closing of the opening of the drip pipe under the action of gravity.

[0012] By adopting the above technical scheme, by arranging the containing box and the ice bags in the containing box, when the three-way valve communicates with the first auxiliary smoke exhaust pipe, the operation of the first air extractor is matched, and the air flow process is formed between the auxiliary air inlet, the second auxiliary smoke exhaust pipe, the air inlet pipe, the tray, the air outlet pipe, the first air extractor and the total air outlet pipe, so that the temperature of the air can be reduced, and the amount of condensed water generated at the bottom of the tray can be increased; meanwhile, the arrangement of the drip pipe can realize the discharge of the condensed water generated in the ice bag into the water tank, and the arrangement of the end cover can avoid the steam from entering into the drip pipe.

[0013] The further arrangement of the present application is that the top end of the containing box is provided with a top cover, the containing box is provided with a containing groove in the shape of a "N" character, three sides of the containing groove of the containing box are arranged except the side close to the three-way valve, the three sides of the containing groove of the containing box are all provided with mesh plates, and the side close to the three-way valve of the containing box is provided with a gap for the movement of the cover plate, when the cover plate is opened to open the auxiliary air inlet, the cover plate abuts against the inner side of the gap to be closed.

[0014] By adopting the above technical solution, the three sides of the storage box with the storage slot are all mesh plates, and when the cover opens the auxiliary air inlet, the cover closes the gap, so that the air entering the auxiliary air inlet will exchange heat with the ice bag in the storage slot, further reducing the temperature of the air.

[0015] The present invention is further configured as follows: the cover plate is provided with a rotating shaft rotatably connected to the second auxiliary smoke exhaust pipe, the linkage mechanism includes a driven gear provided on the rotating shaft and a driving gear provided at the valve handle of the three-way valve, the driven gear and the driving gear are meshed with each other, and during the rotation of the handle of the three-way valve, the driving gear drives the driven gear to rotate to drive the cover plate to open or close the auxiliary air inlet, and when the cover plate opens the auxiliary air inlet, the cover plate rotates and presses against the inner side of the notch to seal it.

[0016] By adopting the above technical solution, when the handle of the three-way valve is rotated, the driving gear can be driven to rotate, and the driving gear drives the driven gear to rotate, thereby driving the cover to open or close the auxiliary air inlet. When the three-way valve is connected to the first auxiliary smoke exhaust pipe, the linkage mechanism drives the cover to open the auxiliary air inlet, and when the three-way valve is connected to the second auxiliary smoke exhaust pipe, the linkage mechanism drives the cover to close the auxiliary air inlet.

[0017] The present invention is further configured as follows: the cover plate is slidably connected to the side surface of the second auxiliary smoke exhaust pipe, and the linkage mechanism includes a connecting sleeve arranged on the valve handle of the three-way valve, a connecting rod hinged at both ends between the connecting sleeve and the cover plate, and an elastic reset component arranged between the cover plate and the second auxiliary smoke exhaust pipe and driving the cover plate to move and reset in the direction away from the three-way valve; in the process of the handle of the three-way valve rotating to make the three-way valve communicate with the first auxiliary smoke exhaust pipe, the connecting rod overcomes the action of the elastic reset component and pulls the cover plate to slide, so that the cover plate opens the auxiliary air inlet; in the process of the handle of the three-way valve rotating to make the three-way valve communicate with the second auxiliary smoke exhaust pipe, the elastic reset component drives the cover plate to reset and then closes the auxiliary air inlet, and an upwardly protruding closing plate is provided on the cover plate. When the cover plate opens the auxiliary air inlet, the closing plate of the cover plate contacts the inner side of the notch for sealing.

[0018] By adopting the above technical solution and arranging a connecting sleeve, a connecting rod and an elastic reset assembly, it is achieved that when the handle of the three-way valve is rotated to connect the three-way valve with the first auxiliary smoke exhaust pipe, the connecting rod overcomes the action of the elastic reset assembly and pulls the cover plate to slide, so that the cover plate opens the auxiliary air inlet; and it is achieved that when the handle of the three-way valve is rotated to connect the three-way valve with the second auxiliary smoke exhaust pipe, the elastic reset assembly drives the cover plate to reset and then closes the auxiliary air inlet.

[0019] The present invention is further configured as follows: the elastic reset assembly includes a base arranged on both sides of the auxiliary air inlet of the second auxiliary smoke exhaust pipe, two guide shafts respectively arranged between the two bases and passing through the cover plate, and a compression spring sleeved on the guide shaft, and the two ends of the compression spring are tightly pressed between the base close to the three-way valve and the side of the cover plate close to the three-way valve.

[0020] By adopting the above technical solution, the elastic reset assembly includes a base, a guide shaft and a compression spring. During the rotation of the handle of the three-way valve, the connecting rod pulls the cover plate, and the cover plate moves after overcoming the elastic force of the compression spring. During the reset rotation of the handle of the three-way valve, the compression spring drives the cover plate to reset during the reset process.

[0021] The present invention is further configured as follows: a plurality of arc-surface protrusions distributed in an array are provided at the bottom of the tray.

[0022] By adopting the above technical solution, when condensation water appears at the bottom of the tray, the water will drip from the lowest end of the curved protrusion. Through the array-distributed curved protrusions, the condensation water can drip in multiple places, which is suitable for the situation where multiple food containers are placed in the tray.

[0023] The beneficial effects of the present invention are as follows: by changing the flow path of the high-temperature gas after combustion when it is discharged, the tray can be heated, so that when the tray encounters steam, the steam is not easily condensed into water droplets, thereby reducing the amount of condensed water generated, which is suitable for steam heating some foods that need to be kept dry (such as cakes); or the temperature of the tray can be lowered, so that when the bottom of the tray encounters steam, the amount of condensed water generated is increased, and then drips into the container for holding food on the tray below, which is suitable for steam heating some high-moisture foods (such as fish); at the same time, it has the effect of recycling waste heat and reducing the emission of harmful gases in the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 is a structural diagram of Example 1;

[0026] Figure 2 This is a schematic diagram of the structure of Example 1 after the furnace door is removed and a partial cross-section is performed;

[0027] Figure 3 yes Figure 2 A local enlarged view at point A;

[0028] Figure 4 yes Figure 2 A partial enlarged view of position B in the middle;

[0029] Figure 5 Schematic diagram of the partial structure of the first plug-in slot and the first plug-in portion (the annular hollow rubber sealing ring is also shown);

[0030] Figure 6 This is a schematic diagram of the structure of Example 2 after the furnace door is removed and a partial cross-section is performed;

[0031] Figure 7 yes Figure 6 A partial enlarged view of position C in the figure;

[0032] Figure 8 yes Figure 6 A partial enlarged view of point D in the figure.

[0033] In the figure: 1. Furnace body; 1.1. Combustion chamber; 1.2. Heating chamber; 1.3. Air inlet duct; 1.4. Air outlet duct; 1.5. Air inlet connector; 1.6. Air outlet connector; 1.7. First plug-in slot; 1.8. Second plug-in slot; 1.9. Receiver tube; 1.10. Plug-in tube; 1.11. Rubber sealing ring; 1.12. Limiting groove; 2. Water tank; 3. Gas heating mechanism; 4. Tray; 41. Air vent; 42. First plug-in portion; 43. Capsule; 44. Annular hollow sealing ring; 45. Connecting pipe; 46. Second plug-in portion; 47. Arc-surface protrusion; 5. Furnace door; 6. First exhaust fan; 7. Extractor Structure; 71. Main exhaust pipe; 72. Second exhaust fan; 8. Main air outlet pipe; 9. Three-way valve; 91. Handle; 10. First auxiliary exhaust pipe; 11. Second auxiliary exhaust pipe; 111. Auxiliary air inlet; 112. Cover plate; 113. Rotating shaft; 114. Closing plate; 12. Linkage mechanism; 121. Driven gear; 122. Driving gear; 123. Connecting sleeve; 124. Connecting rod; 125. Elastic reset assembly; 1251. Base; 1252. Guide shaft; 1253. Compression spring; 13. Container; 131. Container tank; 132. Drip pipe; 133. End cover; 134. Notch; 14. Ice pack. DETAILED DESCRIPTION

[0034] The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0035] Example 1: A food steam heating oven, such as Figure 1 and Figure 2As shown, the instant hot stove comprises a furnace body 1 having a combustion chamber 1.1 and a heating chamber 1.2; a water tank 2 disposed at the bottom of the heating chamber 1.2; a gas heating mechanism 3 disposed within the combustion chamber 1.1 and heating the bottom of the water tank 2; a plurality of trays 4 inserted into the heating chamber 1.2; and a door 5 disposed on the instant hot stove body and opening and closing the heating chamber 1.2. The bottom of the trays 4 is provided with a plurality of arc-shaped protrusions 47 arranged in an array.

[0036] like Figures 1 to 3 As shown, the tray 4 is hollow, with an air inlet duct 1.3 provided on one side of the furnace body 1 and an air outlet duct 1.4 provided on the other side. Multiple air inlet connectors 1.5 are provided between the air inlet duct 1.3 and the heating chamber 1.2, and multiple air outlet connectors 1.6 are provided between the air outlet duct 1.4 and the heating chamber 1.2. Ventilation ports 41 are provided on both sides of the tray 4, which connect to the air inlet connectors 1.5 and the air outlet connectors 1.6 after installation. A first exhaust fan 6 is provided on the furnace body 1, whose air inlet port communicates with the upper end of the air outlet duct 1.4. The furnace body 1 is also equipped with an extraction mechanism 7 for extracting high-temperature gases generated by the combustion of the gas heating mechanism 3. This extraction mechanism 7 includes a main exhaust pipe 71 that communicates with the combustion chamber 1.1, and a second exhaust fan 72, provided on the side of the furnace body 1 and whose air inlet port communicates with the end of the main exhaust pipe 71 away from the combustion chamber 1.1.

[0037] like Figure 1 and Figure 2 、 Figure 5 As shown, a main air outlet pipe 8 communicating with the air outlet port of the first blower is provided on the top of the furnace body 1, a three-way valve 9 is provided on the air outlet port of the second exhaust fan 72, a first auxiliary smoke exhaust pipe 10 is provided between one interface of the three-way valve 9 and the main air outlet pipe 8, a second auxiliary smoke exhaust pipe 11 is provided between the other interface of the three-way valve 9 and the air inlet pipe 1.3, an auxiliary air inlet 111 is provided on the second auxiliary smoke exhaust pipe 11, and a cover for opening or closing the auxiliary air inlet 111 is provided on the second auxiliary smoke exhaust pipe 11 112. A linkage mechanism 12 is provided between the cover plate 112 and the valve handle of the three-way valve 9. When the three-way valve 9 is connected to the first auxiliary smoke exhaust pipe 10, the linkage mechanism 12 drives the cover plate 112 to open the auxiliary air inlet 111. When the three-way valve 9 is connected to the second auxiliary smoke exhaust pipe 11, the linkage mechanism 12 drives the cover plate 112 to close the auxiliary air inlet 111. A square rubber sealing gasket (not marked in the figure) is provided on the cover plate 112, which is pressed against the peripheral side of the auxiliary air inlet 111 during the process of closing the auxiliary air inlet 111.

[0038] like Figures 2 to 4As shown, a first plug-in slot 1.7 is provided in the heating chamber 1.2, which extends obliquely downward toward the rear side of the heating chamber 1.2. First plug-in portions 42 that match the first plug-in slot 1.7 and are inclined are provided on both sides of the tray 4. The vent 41 is provided below the first plug-in portion 42. The lower end of the first plug-in portion 42 is provided with a capsule 43 that deforms during the force application process. An annular hollow sealing ring 44 is provided on the side of the tray 4 around the vent 41, and a connecting pipe 45 is provided between the annular hollow sealing ring 44 and the capsule 43. When the first plug-in portion 42 of the tray 4 is plugged into place, the capsule 43 is squeezed, and the gas in the capsule 43 enters the annular hollow sealing ring 44 so that the annular hollow sealing ring 44 expands and presses against the inner wall of the heating chamber 1.2, thereby sealing the connection of the vent 41.

[0039] like Figure 2 and Figure 5 As shown, the second smoke exhaust duct is provided with a receiving box 13 which surrounds the auxiliary air inlet 111 and does not affect the movement of the cover plate 112. A plurality of ice bags 14 are placed in the receiving box 13. The receiving box 13 is provided with a drip pipe 132 which extends to above the water tank 2 of the furnace body 1. The drip pipe 132 is hinged at one end above the water tank 2 to have an end cover 133 which closes the opening of the drip pipe 132 under the action of gravity.

[0040] like Figure 2 and Figure 5 As shown, the upper end of the storage box 13 is provided with a top cover (not marked in the figure), and the storage box 13 is provided with a "凵"-shaped storage groove 131. The storage box 13 groove is located on the three sides of the storage box 13 except the side close to the three-way valve 9 ( Figure 5 The receiving box 13 is cross-sectionally viewed in the figure), the receiving box 13 is provided with a receiving groove 131, and three sides thereof are mesh plates. A notch 134 for the cover plate 112 to move is provided on the side of the receiving box 13 close to the three-way valve 9. When the cover plate 112 opens the auxiliary air inlet 111, the cover plate 112 abuts against the inner side of the notch 134 to seal it.

[0041] like Figure 5 As shown, the cover plate 112 is provided with a rotating shaft 113 rotatably connected to the second auxiliary smoke exhaust pipe 11, and the linkage mechanism 12 includes a driven gear 121 provided on the rotating shaft 113 and a driving gear 122 provided at the valve handle of the three-way valve 9. The driven gear 121 and the driving gear 122 are engaged with each other. During the rotation of the handle 91 of the three-way valve 9, the driving gear 122 drives the driven gear 121 to rotate to drive the cover plate 112 to open or close the auxiliary air inlet 111. When the cover plate 112 opens the auxiliary air inlet 111, the cover plate 112 rotates and presses against the inner side of the notch 134 to seal it.

[0042] Implementation effect: During the use of the food steam instant heating stove, when the three-way valve 9 is in a connected state with the second auxiliary exhaust pipe 11, the high-temperature gas generated after combustion passes through the main exhaust pipe 71, the second exhaust fan 72, the three-way valve 9, the second auxiliary exhaust pipe 11, the air inlet pipe 1.3, the tray 4, the air outlet pipe 1.4, the first exhaust fan 6, and the main air outlet pipe 8. At this time, the tray 4 can be heated during the process, and the heat in the high-temperature gas is recycled and utilized, which has the effect of energy saving and consumption reduction. At the same time, after the tray 4 is heated, when it encounters steam, the steam is not easy to condense into water droplets, which reduces the amount of condensed water generated, and is suitable for steam heating some foods that need to be kept dry (such as cakes); when the three-way valve 9 is in a connected state with the first auxiliary exhaust pipe 10, the high-temperature gas is discharged from the main exhaust pipe 71, the second exhaust fan 72, the three-way valve 9, the second auxiliary exhaust pipe 11, the air inlet pipe 1.3, the tray 4, the air outlet pipe 1.4, the first exhaust fan 6, and the main air outlet pipe 8. An auxiliary smoke exhaust pipe 10 and a main air outlet pipe 8 are discharged, and at this time the linkage mechanism 12 drives the cover plate 112 to open the auxiliary air inlet 111, and cooperates with the operation of the first exhaust fan 6 to form air flow among the auxiliary air inlet 111, the second auxiliary smoke exhaust pipe 11, the air inlet duct 1.3, the tray 4, the air outlet duct 1.4, the first exhaust fan 6, and the main air outlet pipe 8, thereby reducing the temperature of the tray 4, so that the amount of condensed water generated when the bottom of the tray 4 encounters steam increases, and then drips into the container for holding food on the tray 4 below, which is suitable for steam heating some high-moisture food (such as fish); in addition, among the two high-temperature gas emission methods, one is to reduce the temperature by heat exchange, and the other is to reduce the temperature by mixing the air with reduced temperature, thereby reducing the production of thermal NOX and reducing nitrogen oxide emissions, which has an environmental protection effect.

[0043] Because it involves the recycling of high-temperature gas, and high-temperature gas contains some harmful gases after combustion, it is necessary to seal the connection of the vent 41 to prevent the high-temperature gas from entering the heating chamber 1.2; at this time, by setting the inclined plug-in groove and the inclined plug-in part, the tray 4 will not move due to the existence of gravity after installation. When the inclined plug-in part of the tray 4 is plugged into place, the capsule 43 is squeezed, and the gas in the capsule 43 enters the annular hollow sealing ring 44 so that the annular hollow sealing ring 44 expands and presses against the inner wall of the heating chamber 1.2, so as to achieve the sealing of the connection of the vent 41.

[0044] By providing a receiving box 13 and arranging an ice bag 14 in the receiving box 13, when the three-way valve 9 is connected to the first auxiliary smoke exhaust pipe 10, in conjunction with the operation of the first exhaust fan 6, an air flow will be formed between the auxiliary air inlet 111, the second auxiliary smoke exhaust pipe 11, the air inlet pipe 1.3, the tray 4, the air outlet pipe 1.4, the first exhaust fan 6, and the main air outlet pipe 8. In this process, the air temperature can be reduced and the amount of condensed water generated at the bottom of the tray 4 can be increased; at the same time, the setting of the drip pipe 132 can realize the discharge of the condensed water generated at the ice bag 14 into the water tank 2, and the setting of the end cover 133 can prevent steam from entering the drip pipe 132. By providing the receiving box 13 with a receiving slot 131 with mesh panels on all three sides, and by ensuring that when the cover plate 112 opens the auxiliary air inlet 111, the cover plate 112 closes the gap 134, so that the air entering the auxiliary air inlet 111 will exchange heat with the ice pack 14 in the receiving slot 131, further reducing the temperature of the air. During the rotation of the handle 91 of the three-way valve 9, the driving gear 122 can be driven to rotate, and the driving gear 122 drives the driven gear 121 to rotate, thereby driving the cover plate 112 to open or close the auxiliary air inlet 111. When the three-way valve 9 is connected to the first auxiliary smoke exhaust pipe 10, the linkage mechanism 12 drives the cover plate 112 to open the auxiliary air inlet 111, and when the three-way valve 9 is connected to the second auxiliary smoke exhaust pipe 11, the linkage mechanism 12 drives the cover plate 112 to close the auxiliary air inlet 111.

[0045] Example 2: A food steam heating oven, with Figures 6 to 8 As shown, the difference from embodiment 1 lies in the different structures at the mounting location of the tray 4 and the different structures at the mounting location of the cover plate 112.

[0046] like Figures 6 to 8 As shown, in the structure of the tray 4 installation location, a second plug-in slot 1.8 extending in the horizontal direction is provided in the heating chamber 1.2, and second plug-in parts 46 matching the second plug-in slot 1.8 are provided on both sides of the tray 4. A limiting slot 1.12 (indicated by a dotted line in the figure) is provided at the bottom of the second plug-in slot 1.8. After the second plug-in part 46 moves to the position of the limit slot 1.12, it can move downward and be embedded in the limit slot 1.12. A plurality of receiving tubes 1.9 connecting the air inlet connection port 1.5 and the air outlet connection port 1.6 and opening upward are respectively provided on both sides of the heating chamber 1.2. Plug-in tubes 1.10 (connected with the vent 41, indicated by a dotted line) with opening downward and plugged into the receiving tube 1.9 during the process of the tray 4 moving to the limit slot 1.12 are provided on both sides of the tray 4. The inner ring of the receiving tube 1.9 is provided with a rubber sealing ring 1.11 for pressing against the peripheral side of the plug-in tube 1.10.

[0047] like Figures 6 to 8As shown in the structure where the cover plate 112 is installed, the cover plate 112 is slidably connected to the side of the second auxiliary smoke exhaust pipe 11, and the linkage mechanism 12 includes a connecting sleeve 123 sleeved on the valve handle of the three-way valve 9, a connecting rod 124 hinged at both ends between the connecting sleeve 123 and the cover plate 112, and an elastic reset component 125 arranged between the cover plate 112 and the second auxiliary smoke exhaust pipe 11 and driving the cover plate 112 to move and reset in the direction away from the three-way valve 9; when the handle 91 of the three-way valve 9 is rotated to make the three-way valve 9 communicate with the first auxiliary smoke exhaust pipe 10, the connecting rod 124 is hinged at both ends between the connecting sleeve 123 and the cover plate 112, and the connecting rod 124 is arranged between the cover plate 112 and the second auxiliary smoke exhaust pipe 11. After overcoming the action of the elastic reset component 125, the rod 124 pulls the cover plate 112 to slide, so that the cover plate 112 opens the auxiliary air inlet 111; when the handle 91 of the three-way valve 9 rotates to make the three-way valve 9 communicate with the second auxiliary smoke exhaust pipe 11, the elastic reset component 125 drives the cover plate 112 to reset and close the auxiliary air inlet 111. The cover plate 112 is provided with an upwardly protruding closing plate 114. When the cover plate 112 opens the auxiliary air inlet 111, the closing plate 114 of the cover plate 112 contacts the inner side of the notch 134 for sealing. The elastic reset assembly 125 includes a base 1251 arranged on both sides of the auxiliary air inlet 111 of the second auxiliary smoke exhaust pipe 11, two guide shafts 1252 respectively arranged between the two bases 1251 and passing through the cover plate 112, and a compression spring 1253 sleeved on the guide shaft 1252. The two ends of the compression spring 1253 are pressed between the base 1251 close to the three-way valve 9 and the side of the cover plate 112 close to the three-way valve 9.

[0048] Implementation effect: During the installation of the tray 4, when the second plug-in portion 46 moves to the position of the limit groove 1.12, it can move downward and be embedded in the limit groove 1.12 to limit the tray 4, and during the downward movement of the tray 4, the plug-in tubes 1.10 on both sides of the tray 4 are used to be plugged into the receiving tube 1.9 to achieve sealing of the connection of the vent 41, thereby preventing the high-temperature gas generated after combustion from entering the heating chamber 1.2 during the flow process.

[0049] Through setting the connecting sleeve 123, the connecting rod 124 and the elastic reset assembly 125, the following effects are realized: in the process of rotating the handle 91 of the three-way valve 9 to make the three-way valve 9 communicate with the first auxiliary smoke exhaust pipe 10, the connecting rod 124 pulls the cover plate 112 to slide after overcoming the action of the elastic reset assembly 125, so that the cover plate 112 opens the auxiliary air inlet 111; in the process of rotating the handle 91 of the three-way valve 9 to make the three-way valve 9 communicate with the second auxiliary smoke exhaust pipe 11, the elastic reset assembly 125 drives the cover plate 112 to reset and then close the auxiliary air inlet 111. The elastic reset assembly 125 comprises a base 1251, a guide shaft 1252 and a compression spring 1253; in the process of rotating the handle 91 of the three-way valve 9, the connecting rod 124 pulls the cover plate 112, and the cover plate 112 moves after overcoming the elastic force of the compression spring 1253; in the process of resetting and rotating the handle 91 of the three-way valve 9, the compression spring 1253 drives the cover plate 112 to reset in the resetting process.

Claims

1. A food steam instant heating stove, comprising a stove body (1) having a combustion chamber (1.1) and a heating chamber (1.2), a water tank (2) arranged at the bottom of the heating chamber (1.2), a gas heating mechanism (3) arranged in the combustion chamber (1.1) and heating the bottom of the water tank (2), a plurality of trays (4) plugged into the heating chamber (1.2), and a stove door (5) arranged on the instant heating stove body and opening or closing the heating chamber (1.2), characterized in that: The tray (4) is hollow, an air inlet duct (1.3) is provided on one side of the furnace body (1), an air outlet duct (1.4) is provided on the other side of the furnace body (1), a plurality of air inlet connection ports (1.5) are provided between the air inlet duct (1.3) and the heating chamber (1.2), and a plurality of air outlet connection ports (1.6) are provided between the air outlet duct (1.4) and the heating chamber (1.2); vents (41) connected to the air inlet connection ports (1.5) and the air outlet connection ports (1.6) after installation are provided on the left and right sides of the tray (4), and a first exhaust fan (6) is provided on the furnace body (1), the air inlet port being in communication with the upper end of the air outlet duct (1.4); The furnace body (1) is provided with an extraction mechanism (7) for extracting high-temperature gas generated after combustion by the gas heating mechanism (3), the extraction mechanism (7) comprising a main exhaust pipe (71) communicating with the combustion chamber (1.1), and a second exhaust fan (72) provided on the side of the furnace body (1) and having an air inlet port communicating with an end of the main exhaust pipe (71) away from the combustion chamber (1.1); The top of the furnace body (1) is provided with a main air outlet pipe (8) communicating with the air outlet port of the first blower, the air outlet port of the second exhaust blower (72) is provided with a three-way valve (9), a first auxiliary smoke exhaust pipe (10) is provided between one interface of the three-way valve (9) and the main air outlet pipe (8), a second auxiliary smoke exhaust pipe (11) is provided between the other interface of the three-way valve (9) and the air inlet pipe (1.3), an auxiliary air inlet (111) is provided on the second auxiliary smoke exhaust pipe (11), and a cover plate (111) for opening or closing the auxiliary air inlet (111) is provided on the second auxiliary smoke exhaust pipe (11). 112), a linkage mechanism (12) is provided between the cover plate (112) and the valve handle of the three-way valve (9); when the three-way valve (9) is in communication with the first auxiliary smoke exhaust pipe (10), the linkage mechanism (12) drives the cover plate (112) to open the auxiliary air inlet (111); when the three-way valve (9) is in communication with the second auxiliary smoke exhaust pipe (11), the linkage mechanism (12) drives the cover plate (112) to close the auxiliary air inlet (111); a square rubber sealing gasket is provided on the cover plate (112) and is pressed against the peripheral side of the auxiliary air inlet (111) during the process of closing the auxiliary air inlet (111).

2. The food steam heating oven according to claim 1, characterized in that: The heating chamber (1.2) is provided with a first plug-in slot (1.7) extending obliquely downward toward the rear side of the heating chamber (1.2); both sides of the tray (4) are provided with first plug-in portions (42) matching the first plug-in slot (1.7) and being oblique; the vent (41) is provided below the first plug-in portion (42); the lower end of the first plug-in portion (42) is provided with a capsule (43) that deforms during the force application process; and the side of the tray (4) is provided with a capsule surrounding the vent ( 41), a connecting pipe (45) is provided between the annular hollow sealing ring (44) and the capsule (43); when the first plug-in portion (42) of the tray (4) is plugged into place, the capsule (43) is squeezed, and the gas in the capsule (43) enters the annular hollow sealing ring (44) so ​​that the annular hollow sealing ring (44) expands and presses against the inner wall of the heating chamber (1.2), thereby sealing the connection of the vent (41).

3. The food steam instant heating oven according to claim 1, characterized in that: A second plug-in slot (1.8) extending in the horizontal direction is provided in the heating chamber (1.2), and second plug-in parts (46) matching the second plug-in slot (1.8) are provided on both sides of the tray (4), and a limiting slot (1.12) is provided at the bottom of the second plug-in slot (1.8). After the second plug-in part (46) moves to the position of the limiting slot (1.12), it can move downward and be embedded in the limiting slot (1.12). A plurality of receiving tubes (1.9) connected to the air inlet connection port (1.5) and the air outlet connection port (1.6) and opening upward are respectively provided on both sides of the heating chamber (1.2), and plug-in tubes (1.10) opening downward are provided on both sides of the tray (4) and plugged into the receiving tube (1.9) during the process of the tray (4) moving to the limiting slot (1.12), and the inner ring of the receiving tube (1.9) is provided with a rubber sealing ring (1.11) for pressing against the peripheral side of the plug-in tube (1.10).

4. The food steam heating oven according to claim 1, characterized in that: The second smoke exhaust duct is provided with a receiving box (13) which surrounds the auxiliary air inlet (111) and does not affect the movement of the cover plate (112); a plurality of ice bags (14) are placed in the receiving box (13); the receiving box (13) is provided with a dripping pipe (132) extending above the water tank (2) of the furnace body (1); and an end cover (133) is hingedly provided at one end of the dripping pipe (132) located above the water tank (2) for closing the opening of the dripping pipe (132) under the action of gravity.

5. The food steam instant heating oven according to claim 4, characterized in that: A top cover is provided at the upper end of the accommodation box (13). The accommodation box (13) is provided with a "U"-shaped accommodation groove (131) (1.8). The accommodation box (13) groove is on three sides of the accommodation box (13) except for the side close to the three-way valve (9). The three sides of the accommodation box (13) provided with the accommodation groove (131) (1.8) are all mesh plates. A notch (134) for the movable cover plate (112) is provided on the side of the accommodation box (13) close to the three-way valve (9). When the cover plate (112) opens the auxiliary air inlet (111), the cover plate (112) abuts against the inner side of the notch (134) for closing.

6. The food steam instant heating oven according to claim 4, characterized in that: A rotating shaft (113) rotatably connected to the second auxiliary exhaust pipe (11) is provided on the cover plate (112). The linkage mechanism (12) includes a driven gear (121) provided on the rotating shaft (113) and a driving gear (122) provided at the valve handle of the three-way valve (9). The driven gear (121) and the driving gear (122) are meshed with each other. During the rotation of the handle (91) of the three-way valve (9), the driving gear (122) drives the driven gear (121) to rotate to drive the cover plate (112) to open or close the auxiliary air inlet (111). When the cover plate (112) opens the auxiliary air inlet (111), the cover plate (112) rotates and abuts against the inner side of the notch (134) for closing.

7. The food steam instant heating oven according to claim 4, characterized in that: The cover plate (112) is slidably connected to the side of the second auxiliary exhaust pipe (11). The linkage mechanism (12) includes a connecting sleeve (123) sleeved on the valve handle of the three-way valve (9), a connecting rod (124) hinged at both ends between the connecting sleeve (123) and the cover plate (112), and an elastic reset component (125) provided between the cover plate (112) and the second auxiliary exhaust pipe (11) and driving the cover plate (112) to move and reset in the direction away from the three-way valve (9); during the rotation of the handle (91) of the three-way valve (9) to make the three-way valve (9) communicate with the first auxiliary exhaust pipe (10), the connecting rod (124) pulls the cover plate (112) to slide after overcoming the action of the elastic reset component (125) to open the auxiliary air inlet (111); during the rotation of the handle (91) of the three-way valve (9) to make the three-way valve (9) communicate with the second auxiliary exhaust pipe (11), the elastic reset component (125) drives the cover plate (112) to reset to close the auxiliary air inlet (111). A closing plate (114) protruding upward is provided on the cover plate (112). When the cover plate (112) opens the auxiliary air inlet (111), the closing plate (114) of the cover plate (112) abuts against the inner side of the notch (134) for closing.

8. The food steam instant heating oven according to claim 7, characterized in that: The elastic reset assembly (125) comprises a base (1251) arranged on both sides of the auxiliary air inlet (111) of the second auxiliary smoke exhaust pipe (11), two guide shafts (1252) respectively arranged between the two bases (1251) and passing through the cover plate (112), and a compression spring (1253) sleeved on the guide shaft (1252), wherein both ends of the compression spring (1253) are pressed between the base (1251) close to the three-way valve (9) and one side of the cover plate (112) close to the three-way valve (9).

9. The food steam instant heating oven according to claim 8, characterized in that: The bottom of the tray (4) is provided with a plurality of arc-surface protrusions (47) distributed in an array.

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