Gas steam box

Abstract

The invention belongs to the technical field of cooking equipment, and particularly relates to a gas steam box. The water tank is isolated from the steaming chamber, so that food residues are prevented from falling into the water tank to cause pollution. A gas steam box comprises a base, a water tank is installed in the base, and a box body is installed on the base. An air outlet pipe is mounted at the top of the water tank and inserted into the tank body, and an air outlet ring is mounted at the top of the air outlet pipe; water vapor penetrates through the air outlet ring and flows into the box body.

Description

Technical Field

[0001] This invention belongs to the field of cooking equipment technology, specifically relating to a gas-fired steam oven. Background Technology

[0002] Steaming is widely used in home kitchens and commercial catering because it can preserve the original flavor and nutrients of ingredients to the greatest extent. Gas steam ovens are used as devices to achieve the steaming function. To simplify structural design and reduce manufacturing costs, existing gas-fired steam ovens generally adopt an integrated layout of steam chamber and water tank, where the water tank is directly located at the bottom of the steam chamber, and steam is directly diffused within the steam chamber to steam the food.

[0003] However, this integrated structure has a flaw: during the steaming process, residues and grease that fall off the surface of the food, as well as condensation that drips from the steaming process, will fall directly into the water tank below, causing pollution of the water source in the tank; the accumulated polluted water source will become a breeding ground for bacteria and other microorganisms, which will then spread back into the steaming chamber with the steam, causing secondary pollution to the food that is steamed subsequently, seriously affecting food safety. Summary of the Invention

[0004] In view of the shortcomings of the above-mentioned background technology, the purpose of the present invention is to provide a gas-fired steam oven that isolates the water tank and the steaming chamber to prevent food residue from falling into the water tank and causing pollution.

[0005] To solve the above-mentioned technical problems, the objective of this invention is achieved as follows: A gas-fired steam oven includes a base, a water tank installed inside the base, and a cabinet installed on the base; A vent pipe is installed on the top of the water tank, which is inserted into the tank body. A vent ring is installed on the top of the vent pipe; water vapor flows into the tank body through the vent ring.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the water tank includes a first upper plate and a first lower plate bent into a U shape; the first upper plate and the first lower plate are spliced ​​and welded together and fixed, and the vent pipe is welded to the top wall of the first upper plate; a drain pipe is welded to the bottom wall of the first lower plate. It also includes a first front plate and a first rear plate. The first front plate is welded to the front edge of the first upper plate and the first lower plate, and the first rear plate is welded to the rear edge of the first upper plate and the first lower plate. A first mounting hole is provided on the first front plate, and a water inlet pipe is installed on the first front plate. A second mounting hole is provided on the first rear plate. Fire tubes are welded inside the water tank; the fire tubes include two symmetrically welded fire tube segments; the fire tube segments include a first plate; the surface of the first plate is stretched as a whole to form a fire channel; one end of the fire channel is the fire inlet end, and the other end of the fire channel is the fire outlet end; the fire inlet end is inserted into the first mounting hole and welded and fixed, and the fire outlet end is inserted into the second mounting hole and welded and fixed. The burner head is mounted on the first front panel and extends to the fire inlet.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the fire channel includes first side plates on both sides, the first side plates are bent into a wave shape, and the top edge of the first side plates is reserved for a first connecting plate that folds outward; the fire channel also includes a first bottom plate, the first bottom plate protrudes into the fire channel to form a first reinforcing strip.

[0008] Based on the above scheme and as a preferred option, the dimensions of the fire outlet and fire inlet are 60-90 mm.

[0009] Based on the above scheme and as a preferred option, the fire channel bends in a U-shape or S-shape.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the two first side plates are inclined closer to the first base plate; the length of the first reinforcing strip is similar to the length of the first base plate.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme: it further includes a first fixing plate, the bottom edge of which is provided with a first latch; the first fixing plate is provided with a first air hole, and the first fixing plate is welded to the first front plate for fixation.

[0012] Based on the above scheme and as a preferred embodiment of the above scheme: the base includes a base frame made of four square tubes welded end to end to form a rectangle, with support legs welded at the four corners of the base frame; first baffles are welded to the left and right sides of the base frame respectively; and a first reinforcing tube is connected between the tops of the two first baffles. Two guide rails are fixed to the bottom wall of the water tank, and the two ends of the guide rails are respectively mounted on square tubes.

[0013] Based on the above scheme and as a preferred embodiment of the above scheme: the box body includes an inner shell; the inner shell includes an inner bottom plate, an inner top plate, an inner side plate and an inner back plate welded together; two opposing partition strips are welded on the inner surface of the inner side plate. It also includes an outer shell; the outer shell is composed of an outer top plate, an outer side plate and an outer back plate welded together, and reinforcing ribs are welded between the outer shell and the inner shell; A door frame is welded to the front side of the inner shell and the outer shell, and a door panel is hinged to the door frame.

[0014] Based on the above scheme and as a preferred option: the vent pipe passes through the bottom plate of the inner liner and is inserted into the inner shell. The top outer surface of the vent pipe is provided with external threads; The vent ring includes a lower circular plate; a first through hole is opened in the middle of the lower circular plate, and an internally threaded column is welded into the first through hole; it also includes an upper circular plate, and an annular ring plate is welded between the edge of the upper circular plate and the edge of the lower circular plate; a number of first vent holes are opened on the ring plate. The first air outlet is elongated and arranged at an angle. A second vent is provided on the upper circular plate; A gasket is welded to the edge of the first through hole of the lower circular plate.

[0015] The outstanding and beneficial technical effects of this invention compared to the prior art are: Compared with the prior art, the gas-fired steam oven of this invention has a water tank independently installed inside the base, with the steam oven body positioned above the base. Steam is conducted between the two through a steam outlet pipe, forming an upper and lower isolation structure. This prevents food residue and other impurities from falling into the water tank during steaming, completely solving the problem of water tank contamination in existing steam ovens, ensuring the cleanliness and hygiene of the steam water source, and improving the safety and taste of the food.

[0016] The fire tubes installed inside the water tank adopt a fire channel structure formed by integral stretching, and the first side plate of the fire channel is bent in a wavy shape, which increases the contact area between the flame and the water in the water tank, improves the heat exchange efficiency, and can quickly generate a large amount of water vapor. At the same time, the first reinforcing strip inside the fire channel enhances the structural strength of the fire tubes and extends their service life.

[0017] The top of the vent pipe is connected to a detachable vent ring. The ring plate of the vent pipe has an inclined, elongated first vent hole, which allows steam to be discharged from the first vent hole while forming a spiral airflow. This turbulence and steam diffusion into the oven ensures that the food is heated evenly and improves the cooking effect.

[0018] The base is made of square tube welded frame with support legs and reinforcing tubes to ensure the stability of the overall structure; the water tank is mounted on the base frame via guide rails, making installation and disassembly convenient.

[0019] The enclosure adopts a double-layer structure of inner shell and outer shell, with reinforcing ribs between the two, which not only enhances the heat preservation performance but also improves the structural strength. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall exploded structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 3This is a schematic cross-sectional view of the overall structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the exploded structure of the base of the present invention.

[0024] Figure 5 This is a schematic diagram of the water tank explosion structure of the present invention.

[0025] Figure 6 This is a schematic diagram of the water tank structure of the present invention.

[0026] Figure 7 This is a schematic diagram of the first fixing plate structure of the present invention.

[0027] Figure 8 This is a schematic diagram of the explosion structure of the inner shell of the present invention.

[0028] Figure 9 This is a schematic diagram of the exploded structure of the box body of the present invention.

[0029] Figure 10 This is a schematic diagram of the explosion structure of the air outlet ring of the present invention.

[0030] Figure 11 This is a schematic diagram of the air outlet ring structure of the present invention.

[0031] Figure 12 This is a schematic diagram of the air outlet ring structure of the present invention.

[0032] Figure 13 This is a cross-sectional structural schematic diagram of the air outlet ring of the present invention.

[0033] Figure 14 This is a schematic diagram of the fire tube structure of the present invention.

[0034] Figure 15 This is a schematic diagram of the fire tube structure of the present invention.

[0035] Figure 16 This is a schematic diagram of the fire tube structure of the present invention.

[0036] Reference numerals: Base 01; Square tube 010; Support leg 0100; First baffle 011; First reinforcing tube 012; Water tank 02; First upper plate 020; Air outlet pipe 0200; First lower plate 021; Drain pipe 0210; First front plate 022; First mounting hole 0220; Water inlet pipe 0221; First rear plate 023; Second mounting hole 0230; First fixing plate 024; First bayonet 0240; First air hole 0241; Guide rail 025; Box body 03; Inner liner shell 030; Inner liner bottom plate 0300; Inner liner top plate 0301; Inner liner side plate 0302; Inner liner back plate 0303; Spacer 03 04; Outer shell 031; Outer top plate 0310; Outer side plate 0311; Outer back plate 0312; Reinforcing rib 0313; Door frame 032; Door panel 033; Gas outlet ring 04; Lower circular plate 040; First through hole 0400; Internal threaded column 041; Upper circular plate 042; Second gas outlet 0420; Ring plate 043; First gas outlet 0430; Gasket 044; Fire tube fitting 10; Fire tube segment 100; First plate 1000; Fire inlet end 1001; Fire outlet end 1002; First side plate 1003; First connecting plate 1004; First bottom plate 1005; First reinforcing strip 1006; Burner head 20. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments; This embodiment provides a gas-fired steam oven, including a base 01, a water tank 02 installed inside the base 01, the water tank 02 being detachably connected inside the base 01 for easy disassembly and maintenance; a box body 03 is installed on the base 01; the box body 03 and the base 01 are bolted together to achieve detachment; A vent pipe 0200 is installed on the top of the water tank 02. The vent pipe 0200 is welded to the top of the water tank 02 and is used for steam collection and discharge. The vent pipe 0200 is inserted into the box body 03. A vent ring 04 is installed on the top of the vent pipe 0200. Water vapor flows into the box body 03 through the vent ring 04.

[0038] As described above, by placing the water tank 02 inside the base 01 and the box body 03 (i.e. the main body of the steam chamber) on the base 01, the water tank 02 and the steam chamber are separated into upper and lower sections. The two are connected by a steam outlet pipe 0200 to transmit steam. Food scraps fall to the bottom of the inner cavity of the box body 03 and cannot enter the water tank 02 inside the base 01, thus completely solving the problem of food scraps contaminating the water tank 02.

[0039] Furthermore, the water tank 02 includes a first upper plate 020 and a first lower plate 021 bent into a U-shape; the first upper plate 020 and the first lower plate 021 are spliced ​​and welded together and fixed, and the vent pipe 0200 is welded to the top wall of the first upper plate 020. The first upper plate 020 and the first lower plate 021 are made of stainless steel plates welded together to form a rectangle; a drain pipe 0210 is welded to the bottom wall of the first lower plate 02; the drain pipe 0210 is connected to the internal connecting pipe of the water tank 02 and a water valve is installed to control the discharge of wastewater.

[0040] It also includes a first front plate 022 and a first rear plate 023. The first front plate 022 is welded to the front edge of the first upper plate 020 and the first lower plate 021, and the first rear plate 023 is welded to the rear edge of the first upper plate 020 and the first lower plate 021 to form a closed water tank 02 cavity. A first mounting hole 0220 is provided on the first front plate 022, and a water inlet pipe 0221 is installed on the first front plate 022. A second mounting hole 0230 is provided on the first rear plate 023. The water inlet pipe 0221 is connected to a water inlet valve through a pipe to realize water replenishment.

[0041] Fire tube fitting 10 is welded inside water tank 02; fire tube fitting 10 includes two symmetrically welded fire tube plates 100; fire tube plates 100 are made of stainless steel plates; fire tube plates 100 include a first plate body 1000; the surface of the first plate body 1000 is stretched as a whole to form a fire channel; the fire channel is stretched as a whole from the first plate body 1000 to increase the channel volume. One end of the fire channel is the fire inlet 1001, and the other end is the fire outlet 1002. The flame enters from the fire inlet 1001 and flows out from the fire outlet 1002. The fire inlet 1001 is inserted into the first mounting hole 0220 and welded and fixed, and the fire outlet 1002 is inserted into the second mounting hole 0230 and welded and fixed, to ensure the connection stability and sealing performance between the fire channel and the water tank 02. A burner head 20 is installed on the first front plate 022, extending to the fire inlet 1001. The burner head 20 burns gas to generate a flame that enters the fire channel to heat the water in the water tank 02.

[0042] As described above, a fire pipe 10 is installed inside the water tank 02. The fire pipe 10 heats the tap water with a flame to generate steam, which is then discharged from the steam outlet pipe 0200. Furthermore, the fire channel includes first side plates 1003 on both sides, which are bent into a wavy shape. The wavy structure increases the contact area with water and improves heat exchange efficiency. A first connecting plate 1004, folding outwards, is reserved at the top edge of the first side plate 1003. The width of the first connecting plate 1004 is 5-10 mm. The first side plate 1003 is stretched and shaped as much as possible. The fire channel also includes a first base plate 1005, which protrudes into the fire channel to form a first reinforcing strip 1006. This effectively increases the structural strength of the first base plate 1005 and prevents the fire channel from deforming due to high temperatures. As mentioned above, the fire tube 10 is made of two symmetrical fire tube pieces 100 welded together, which makes assembly more convenient; at the same time, the fire channel also increases the heat exchange contact area.

[0043] Furthermore, the dimensions of the fire outlet 1002 and the fire inlet 1001 are 60-90 mm.

[0044] As mentioned above, this ensures that the flames fully enter the fire channel, preventing excessive heat loss due to overflow of the flames. Furthermore, the flue bends are U-shaped or S-shaped.

[0045] As mentioned above, by selecting and stacking the fire channels according to different size requirements, the downtime of the flame within the fire channels can be extended, thus improving utilization. At the same time, the effective area of ​​the first plate 1000 is fully utilized.

[0046] Furthermore, the two first side plates 1003 are inclined closer to the first base plate 1005; the length of the first reinforcing strip 1006 is similar to the length of the first base plate 1005.

[0047] As mentioned above, the constriction structure can concentrate the flame while preventing the first plate from cracking during the 1000-degree stretching process.

[0048] Furthermore, it also includes a first fixing plate 024, the bottom edge of which is provided with a first latch 0240; the first fixing plate 024 is provided with a first air hole 0241, and the first fixing plate 024 is welded to the first front plate 022 for fixation.

[0049] As described above, the first fixing plate 024 is a metal plate, welded to the water tank 02, and the burner head 20 is inserted into the first bayonet 0240 and welded in place to ensure the stability of the burner head 20. The first vent 0241 facilitates airflow during the operation of the burner head 20, ensuring complete combustion.

[0050] Furthermore, the base 01 includes a rectangular frame made of four square tubes 010 welded end to end, with support legs 0100 welded at the four corners of the frame; the support legs 0100 are also made of metal tubes that can elevate the base 01 so that it does not touch the ground, making it easy to clean.

[0051] The base frame is welded with first baffles 011 on the left and right sides respectively; a first reinforcing tube 012 is connected between the tops of the two first baffles 011; the first reinforcing tube 012 is a steel pipe, which is welded and fixed to each other to increase the overall strength. Two guide rails 025 are fixed to the bottom wall of water tank 02, and the two ends of the guide rails 025 are respectively mounted on square tube 010 and fixed.

[0052] As mentioned above, the two ends of the conduit are bolted to the square tube 010, which facilitates the installation and disassembly of the water tank 02 and makes it convenient for later maintenance.

[0053] Furthermore, the cabinet 03 includes an inner shell 030, which is entirely made of metal sheet. The inner shell 030 is formed by welding together an inner bottom plate 0300, an inner top plate 0301, an inner side plate 0302, and an inner back plate 0303. Two opposing partition strips 0304 are welded to the inner surface of the inner side plate 0302. The partition strips 0304 are metal strips with a T-shaped cross section and are evenly distributed along the height direction of the inner side plate 0302, which facilitates adjusting the placement of the steaming rack according to the height of the food.

[0054] It also includes an outer shell 031, which is also made entirely of metal plate. The outer shell 031 is formed by welding together an outer top plate 0310, an outer side plate 0311, and an outer back plate 0312. A reinforcing rib 0313 is welded between the outer shell 031 and the inner shell 030. The reinforcing rib 0313 is made of metal plate bent into long strips and welded between the two. It not only enhances the strength of the box 03, but also forms an insulation layer between the two, improving the insulation performance and reducing heat loss. A door frame 032 is welded to the front side of the inner shell 030 and the outer shell 031, and a door panel 033 is hinged to the door frame 032.

[0055] As mentioned above, closing the door panel 033 improves the sealing and insulation performance of the enclosure 03.

[0056] Furthermore, the vent pipe 0200 passes through the inner liner bottom plate 0300 and is inserted into the inner liner shell 030; The top outer surface of the vent pipe 0200 is provided with external threads; The vent ring 04 includes a lower circular plate 040, which is made of stainless steel. A first through hole 0400 is provided in the middle of the lower circular plate 040, and an internally threaded post 041 is welded into the first through hole 0400. The internally threaded post 041 is threadedly connected to the external thread of the vent pipe 0200, so as to achieve detachable assembly. It also includes an upper circular plate 042, which is also made of stainless steel. A ring-shaped plate 043 is welded between the edge of the upper circular plate 042 and the edge of the lower circular plate 040. The circular plate is also made of stainless steel and is bent and welded to fix it. Several first vent holes 0430 are opened on the ring plate 043. Steam is discharged from the first vent holes 0430. Food residue will not fall into the vent ring 04, thus avoiding contamination of other parts. At the same time, removing the vent ring 04 allows you to add cleaning agent to clean the water tank 02 below, achieving two goals at once.

[0057] The first vent 0430 is elongated and arranged at an angle. The angled arrangement of the first vent 0430 allows the discharged steam to form a spiral airflow, which makes the steam flow and evenly distributed with vertical disturbance, so that the food is heated synchronously.

[0058] The upper circular plate 042 is provided with a second vent 0420; the second vent 0420 can also discharge steam, and several second vents 0420 are evenly distributed on the upper circular plate 042. A gasket 044 is welded to the edge of the first through hole 0400 of the lower circular plate 040.

[0059] As described above, gasket 044 can increase the sealing of the connection between vent pipe 0200 and vent pipe 0200, ensuring the discharge of vapor.

[0060] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In this invention, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw-in," etc., should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection. The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A gas-fired steam oven, characterized in that: Includes a base, a water tank installed inside the base, and a casing installed on the base; A vent pipe is installed on the top of the water tank, which is inserted into the tank body. A vent ring is installed on the top of the vent pipe; water vapor flows into the tank body through the vent ring.

2. The gas-fired steam oven according to claim 1, characterized in that: The water tank includes a first upper plate and a first lower plate bent into a U-shape; the first upper plate and the first lower plate are joined and welded together and fixed, and the vent pipe is welded to the top wall of the first upper plate; a drain pipe is welded to the bottom wall of the first lower plate. It also includes a first front plate and a first rear plate. The first front plate is welded to the front edge of the first upper plate and the first lower plate, and the first rear plate is welded to the rear edge of the first upper plate and the first lower plate. A first mounting hole is provided on the first front plate, and a water inlet pipe is installed on the first front plate. A second mounting hole is provided on the first rear plate. Fire tubes are welded inside the water tank; the fire tubes include two symmetrically welded fire tube segments; the fire tube segments include a first plate; the surface of the first plate is stretched as a whole to form a fire channel; one end of the fire channel is the fire inlet end, and the other end of the fire channel is the fire outlet end; the fire inlet end is inserted into the first mounting hole and welded and fixed, and the fire outlet end is inserted into the second mounting hole and welded and fixed. The burner head is mounted on the first front panel and extends to the fire inlet.

3. The gas-fired steam oven according to claim 2, characterized in that: The fire channel includes first side plates on both sides, which are bent into a wavy shape, and the top edge of the first side plate is reserved for a first connecting plate that folds outward; the fire channel also includes a first bottom plate, which protrudes into the fire channel to form a first reinforcing strip.

4. The gas-fired steam oven according to claim 3, characterized in that: The dimensions of the fire outlet and fire inlet are 60-90 mm.

5. The gas-fired steam oven according to claim 4, characterized in that: The fire channel bends in a U-shape or S-shape.

6. The gas-fired steam oven according to claim 5, characterized in that: The two first side plates are inclined closer to the first base plate; the length of the first reinforcing strip is similar to the length of the first base plate.

7. The gas-fired steam oven according to claim 2, characterized in that: It also includes a first fixing plate, the bottom edge of which has a first latch; the first fixing plate has a first air hole, and the first fixing plate is welded to the first front plate for fixation.

8. The gas-fired steam oven according to claim 1, characterized in that: The base consists of a rectangular frame made of four square tubes welded end to end, with support legs welded at the four corners of the frame; first baffles are welded to the left and right sides of the frame; and a first reinforcing tube is connected between the tops of the two first baffles. Two guide rails are fixed to the bottom wall of the water tank, and the two ends of the guide rails are respectively mounted on square tubes.

9. The gas-fired steam oven according to claim 1, characterized in that: The enclosure includes an inner shell; the inner shell is formed by welding together an inner bottom plate, an inner top plate, inner side plates, and an inner back plate; two opposing spacers are welded to the inner surface of the inner side plates. It also includes an outer shell; the outer shell is composed of an outer top plate, an outer side plate and an outer back plate welded together, and reinforcing ribs are welded between the outer shell and the inner shell; A door frame is welded to the front side of the inner shell and the outer shell, and a door panel is hinged to the door frame.

10. The gas-fired steam oven according to claim 9, characterized in that: The vent pipe passes through the bottom plate of the inner liner and inserts into the inner shell. The top outer surface of the vent pipe is provided with external threads; The vent ring includes a lower circular plate; a first through hole is opened in the middle of the lower circular plate, and an internally threaded column is welded into the first through hole; it also includes an upper circular plate, and an annular ring plate is welded between the edge of the upper circular plate and the edge of the lower circular plate; a number of first vent holes are opened on the ring plate. The first air outlet is elongated and arranged at an angle. A second vent is provided on the upper circular plate; A gasket is welded to the edge of the first through hole of the lower circular plate.

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