A shallow tray food heater with dual heat flow channels

Abstract

The present application relates to the technical field of kitchen equipment, and provides a shallow plate food heater with double heat flow channels, which comprises a box body and a combustion chamber assembly, the upper portion of the box body is provided with a heating pool, the lower surface of the bottom wall of the heating pool is provided with a waste heat collection system, the peripheral side wall of the heating pool is sealingly connected with an inner container, the inner hearth of the combustion chamber assembly is connected with a second outlet and a first outlet through an upwardly extending guide plate, the inner container is provided with a fire dam, the fire dam contacts and covers the guide plate passing through a connecting hole, and the fire dam is in contact with the inner cavity wall of the inner container on three sides. The beneficial effects are that the flow trajectory of the heat flow is prolonged through the first and second heat flow channels above and below the fire dam, the heat flow in the first heat flow channel does not contact the heating pool, the heat flow in the second heat flow channel is beneficial to fully release heat and act on the waste heat collection system, the temperature of the hot surface can reach 330 DEG, the heating effect is ensured, and the power generation efficiency of the waste heat collection module is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen equipment, in particular to a shallow plate food heater with double heat flow channels. BACKGROUND

[0002] The shallow plate food heater with double heat flow channels adopts liquid fuel or gas fuel as energy source, is mainly used for heating shallow plate food, and can also be used for cooking, stewing, steaming and frying food, and can process more food and packaged food at the same time, has high efficiency, can generate electricity, has good energy saving and consumption reducing effect, has high use reliability, has long service life, is especially suitable for occasions with more people dining outdoors at the same time, can adapt to harsh environment occasions, especially occasions requiring fast and efficient, safe and reliable solution to the problem of food and water in the wild, can well adapt to harsh environments such as highlands, deserts, low temperatures or high temperatures, and ensure safe, efficient and fast heating of shallow plate food.

[0003] The existing shallow plate food heater with double heat flow channels has short heat flow channels, and the heat flows out directly from one side of the box body to the other side, resulting in low power generation efficiency of the waste heat collection module, and the heat energy cannot be fully utilized, for example, CN112690659A. In view of this, the present application is proposed. SUMMARY

[0004] The purpose of the present application is to provide a shallow plate food heater with double heat flow channels to solve the technical problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is: a shallow plate food heater with double heat flow channels, comprising: a box body and a combustion chamber assembly, the upper part of the box body is provided with a heating pool, and the bottom wall lower surface of the heating pool is provided with a waste heat collection system; the outer periphery of the side wall of the heating pool is sealingly connected with an inner container, and the bottom wall of the inner container is provided with a connecting hole; the inner hearth of the combustion chamber assembly forms a second outlet and a first outlet through an upwardly extending guide plate; a fireproof plate is arranged in the inner container, the fireproof plate contacts and covers the guide plate passing through the connecting hole, the fireproof plate is in contact with the inner cavity wall of the inner container on three sides, and a first heat flow channel is formed between the fireproof plate and the bottom wall of the inner container, a second heat flow channel is formed between the fireproof plate and the bottom wall of the heating pool, and the end of the first heat flow channel communicates with the second heat flow channel; wherein the heat flow in the first heat flow channel does not heat the heating pool.

[0006] In an optional embodiment, the guide plate is formed by three plates connected vertically in sequence, and the non-upward open end of the guide plate and the surface of the shell of the combustion chamber body form the first outlet.

[0007] Optionally, the second outlet is square, and the second outlet extends upward through the guide plate.

[0008] Optionally, a flange is arranged around the upper part of the outer shell of the combustion chamber body in the combustion chamber assembly, for mounting the combustion chamber assembly and the inner container.

[0009] Optionally, the length of the fireproof plate is less than the length of the bottom wall of the inner container.

[0010] Optionally, a wire protection tube is arranged on the sidewall of the heating pool, and the wire protection tube is filled with heat insulation material.

[0011] Optionally, the bottom of the inner container is supported on the box frame in the box by a support leg.

[0012] Optionally, a burner is further arranged in the combustion chamber assembly, and the combustion chamber assembly is connected with the burner through a connecting pipe.

[0013] Optionally, the inner container is connected with an outer flue and an inner flue, and the outer flue and the inner flue are located on the same side of the combustion chamber assembly.

[0014] Optionally, the waste heat collection system is a thermoelectric generation module, and the thermoelectric generation module is composed of a plurality of TEG modules connected in series, and a graphene layer is arranged between the TEG module and the bottom wall of the heating pool, and the graphene layer is attached to the bottom plate of the TEG module and the bottom wall of the heating pool.

[0015] The beneficial effects of the present application are:

[0016] The shallow plate food heater with double heat flow channels prolongs the flow trajectory of heat flow through the first and second heat flow channels above and below the fireproof plate, and the heat flow in the first heat flow channel does not contact the heating pool, which is beneficial to the full release of heat in the second heat flow channel and the action on the waste heat collection system, so that the heat surface temperature of the waste heat collection system can reach 330°, compared with the direct heating mode of heat flow flowing from left to right, not only the heating effect is ensured, but also the power generation efficiency of the waste heat collection module is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0018] Figure 1The overall structure schematic view of the shallow plate food heater with double heat flow channels provided in an embodiment of the present application.

[0019] Figure 2 The front view of the shallow plate food heater with double heat flow channels provided in an embodiment of the present application.

[0020] Figure 3 The Figure 2 The A-A direction sectional view of the shallow plate food heater with double heat flow channels provided in an embodiment of the present application.

[0021] Figure 4 The front view of the shallow plate food heater with double heat flow channels provided in an embodiment of the present application.

[0022] Figure 5 The rear view of the shallow plate food heater with double heat flow channels provided in an embodiment of the present application.

[0023] Figure 6 The Figure 5 The B-B direction sectional view of the shallow plate food heater with double heat flow channels provided in an embodiment of the present application.

[0024] Figure 7 The structure schematic view of the combustion chamber assembly provided in an embodiment of the present application.

[0025] Figure 8 The structure schematic view of the fireproof plate provided in an embodiment of the present application.

[0026] Figure 9 The structure schematic view of the inner container provided in an embodiment of the present application.

[0027] Figure 10 The top view of the inner container provided in an embodiment of the present application.

[0028] Figure 11 The heat flow direction schematic view of the shallow plate food heater with double heat flow channels provided in an embodiment of the present application.

[0029] Figure 12 The installation schematic view of the waste heat collection module provided in an embodiment of the present application Figure 1 .

[0030] Figure 13 The installation schematic view of the waste heat collection module provided in an embodiment of the present application Figure 2 .

[0031] Figure 14 The structure schematic view of the heating pool provided in an embodiment of the present application.

[0032] In the drawings, the reference signs are as follows:

[0033] 1 - upper cover assembly, 2 - shallow plate food heater, 3 - liner, 4 - box shell, 5 - cross handle, 6 - inclined handle, 7 - outer flue, 8 - inner flue, 9 - fireproof plate, 10 - leg, 11 - combustion chamber assembly, 12 - universal wheel assembly, 13 - box skeleton, 14 - oil tank, 15 - drainage assembly, 16 - wire protection tube, 17 - handle, 18 - lock, 19 - burner, 20 - support assembly, 21 - waste heat collection system, 22 - second heat flow channel, 23 - first heat flow channel, 24 - heating pool;

[0034] 31 - connecting hole, 32 - drainage hole, 33 - drainage hole; 91 - guide hole; 111 - guide plate, 112 - combustion chamber body, 113 - flange, 114 - connecting pipe, 115 - first outlet, 116 - second outlet; 211 - TEG module, 212 - graphene layer, 213 - screw nut assembly, 214 - pressing plate, 241 - convex edge. DETAILED DESCRIPTION

[0035] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects more clearly, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0036] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position shown in the drawings, and are only for the convenience of description, and cannot be understood as a limitation on the technical solutions. The terms "first", "second" are only for the purpose of convenient description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0037] Please refer to the accompanying Figures 1-14 The purpose of the present embodiment is to provide a shallow plate food heater with double heat flow channels, which comprises a box, a burner assembly, a power supply system, a waste heat collection system 21, a fuel supply system and a control system, which work cooperatively.

[0038] The box is composed of a box skeleton 13, a box shell 4, an upper cover assembly 1 and the like. The box shell 4 is installed outside the box skeleton 13, the box skeleton 13 supports the box shell 4, and a plurality of universal wheel assemblies 12 are installed at the bottom of the box shell 4, facilitating the movement of the entire shallow tray food heater with double heat flow channels.

[0039] Specifically, the upper part of the box skeleton 13 is provided with a heating pool 24, which is installed on the box skeleton 13 through the flange 241 of its edge. Preferably, the heating pool 24 can be fixedly installed on the box skeleton 13 by screwing through the flange 241, and when the installation is completed, the flange 241 covers the upper edge of the box shell 4. It should be pointed out that the side wall of the heating pool 24 is provided with a wire protection tube 16, the inside of which is filled with heat insulation material. The wire protection tube 16 located inside the heating pool 24 is in contact with hot water in the heating pool 24, and the temperature will not be higher than 100℃. At the same time, the wire protection tube 16 is filled with heat insulation material, which reduces the possibility of damage to the wires and signal lines passing through the wire protection tube 16, including the wires and signal lines used in the waste heat collection system 21. The side of the heating pool 24 is also connected with a drainage assembly 15 which penetrates through the box shell 4. The upper cover assembly 1 is hinged on the box and is used to seal or open the heating pool 24. The upper cover assembly 1 is provided with a sealing ring which is in contact with the heating pool 24 when the upper cover assembly 1 is closed. A valve body is provided in the middle position of the upper cover assembly 1 for exhaust. The upper cover assembly 1 is also provided with a lock 18, a support assembly 20 and a handle 17. The lock 18 is used to lock the upper cover assembly 1 with the box shell 4, the support assembly 20 is used to support the upper cover assembly 1 when it is opened, and the handle 17 is used to assist in opening the upper cover assembly 1.

[0040] Further, the side wall of the heating pool 24 is peripherally sealed with an inner container 3, the bottom of which is supported on the box skeleton 13 through the supporting leg 10, further fixing the inner container 3. Preferably, the bottom wall of the inner container 3 is provided with a connecting hole 31, and the side wall is provided with a drainage hole 32 and a drainage hole 33. The drainage hole 32 is used to discharge the hot flow after use, and the drainage hole 33 is used for the drainage assembly 15 to penetrate out.

[0041] In this embodiment, the waste heat collection system 21 is installed on the outer surface of the bottom wall of the heating tank 24. The waste heat collection system 21 is a thermoelectric power generation module. The thermoelectric power generation module is composed of a plurality of TEG modules 211 connected in series. A graphene layer 212 is arranged between the TEG module 211 and the bottom wall of the heating tank 24. The graphene layer 212 is attached to the bottom plate of the TEG module 211 and the bottom wall of the heating tank 241. The graphene layer 212 is soft and deformable, solving the problem of uneven installation surface of the TEG module 211 and the heating tank 4. The graphene layer 212 has good heat conduction performance and quickly transfers heat to the heating tank 24. The thermoelectric power generation module uses the Seebeck effect as the basic principle. The two ends of the thermoelectric module are placed between the heat source and the cold source, respectively, to generate a potential difference. The thermoelectric power generation module directly converts heat energy into electrical energy and provides heat energy to the power system, fully utilizing the energy of the heat flow. It should be noted that the side of the TEG module 211 away from the bottom plate is provided with a plurality of pressing plates 214. Each pressing plate 214 is provided with two or more positioning holes. The bottom wall of the heating tank 24 is provided with the same number of connecting holes corresponding to the positioning holes. The screws in the screw-nut assembly 213 are respectively welded in the corresponding connecting holes in the bottom wall of the heating tank 24 through the positioning holes in the pressing plates 214, the thermoelectric power generation module and the graphene layer 212. The nuts on the screws in the screw-nut assembly 213 are manually tightened to press the pressing plates 214 and the thermoelectric power generation module, thereby fixing the thermoelectric power generation module on the bottom wall of the heating tank 24. The above installation structure is simple in connection and reliable in fixation, improving the installation efficiency and reliability. In order to further fully utilize the energy of the heat flow, in the preferred embodiment, in addition to installing the thermoelectric power generation module on the outer surface of the bottom wall of the heating tank 24, thermoelectric power generation modules are also installed on the side walls of the heating tank 24. The TEG modules in the thermoelectric power generation modules are installed in the same way.

[0042] Further, the burner assembly includes the burner 19 and the combustion chamber assembly 11. The burner 19 is installed outside the cabinet and connected with the connecting pipe 114 of the combustion chamber assembly 11. The combustion chamber assembly 11 is installed inside the cabinet. The combustion chamber body 112 of the combustion chamber assembly 11 is an inner hearth. The injection flame is generated in the inner hearth to generate the heat flow. The injection flame is injected to the right to generate the main heat flow flowing to the right and the auxiliary heat flow flowing upward.

[0043] Specifically, the upper part of the inner hearth is a second outlet 116, and a guide plate 111 is arranged upward along the second outlet 116 on the shell of the combustion chamber body 112. The guide plate 111 is three plates connected vertically in sequence, and the non-upward open end of the guide plate 111 and the surface of the shell of the combustion chamber body 112 form a first outlet 115. It should be pointed out that the second outlet 116 is square, and the second outlet 116 extends upward through the guide plate 111. It can be seen that the first outlet 115 and the second outlet 116 transmit the heat flow generated by the inner hearth in two directions, so that the heat is more fully utilized. The flange 113 is arranged outward around the upper part of the shell of the combustion chamber body 112, which is used for the installation of the entire combustion chamber assembly 11.

[0044] It should be pointed out in this embodiment that when the combustion chamber assembly 11 is installed, the guide plate 111 is inserted into the connecting hole 31 of the inner container 3, the external shape and size of the guide plate 111 are the same as the internal shape and size of the connecting hole 31, and after installation is completed, the first outlet 115 faces away from the outer flue 7. The lower surface of the flange 113 is in sealing contact with the upper surface of the bottom wall of the inner container 3. It is worth mentioning that the fireproof plate 9 is installed on the guide plate 111, the fireproof plate 9 is in contact with three walls of the inner cavity of the inner container 3, and a first heat flow channel 23 is formed between the fireproof plate 9 and the bottom wall of the inner container 3. At the same time, the fireproof plate 9 and the bottom wall of the heating pool 24 form a second heat flow channel 22. The length of the fireproof plate 9 is less than the length of the bottom wall of the inner container 3, so that the heat flow can flow upward through the first heat flow channel 23 at the end of the fireproof plate 9 into the second heat flow channel 22, and finally the heat flow is discharged through the inner flue 8 and the outer flue 7. It should be particularly pointed out that a plurality of flow guide holes 91 are arranged on the fireproof plate 9 in a rectangular arrangement.

[0045] It can be seen from the above structure that the heat flow flows out of the inner hearth of the combustion chamber, enters the first heat flow channel 23 from the first outlet 115 and flows from left to right. Since the length of the fireproof plate 9 is less than the length of the bottom wall of the inner container 3, when the heat flow reaches the right side of the inner container 3, it flows upward through the gap between the fireproof plate 9 and the other side wall of the inner container 3 into the second heat flow channel 22, forming a double-layer heat flow channel structure, that is, the outer flue 7 and the burner are placed on the same side of the box body, so that the heat flow channel after the combustion of the burner is lengthened, which is beneficial to improve the hot surface temperature of the TEG module. Through testing, the temperature of the heat flow at the bottom position of the heating pool 24 can reach 330℃. While ensuring heating, the waste heat recovery effect can be improved, more heat energy can be recovered and converted into electric energy. At the same time, the heat flow can also flow upward through the second outlet 116 and the flow guide holes 91 on the fireproof plate 3, the upward heat flow through the second outlet 116 and the heat flow circulating to the flow guide holes 91 through the second heat flow channel 22 are combined, heat flow circulation and full utilization of heat are realized, and finally the heat flow is discharged through the inner flue 8 and the outer flue 7. The heat flow in the first heat flow channel 23 does not heat the heating pool 24.

[0046] It needs to be clear that the flame in the inner hearth of the combustion chamber body 112 sprays to the right, and the main heat flow generated thereby flows to the right along the first heat flow channel 23 through the first outlet 115, while the auxiliary heat flow generated by the flame in the inner hearth sprays to the right and flows upward through the second outlet 116. The heat flow flowing upward through the second outlet 116 is combined with the heat flow circulating to above the flow guide hole 91 through the second heat flow channel 22, so as to ensure the overall temperature of the heat flow and avoid waste of heat. The temperature of the heat flow circulating to above the flow guide hole 91 through the second heat flow channel 22 is reduced, and the auxiliary heat flow is used as a supplement to ensure the stable temperature of the heat flow in the second heat flow channel 22, improve the temperature of the heat surface of the waste heat recovery system 21, and ensure the power generation efficiency. The temperature of the heat flow flowing upward through the flow guide hole 91 is higher than that of the heat flow circulating to above the flow guide hole 91 through the second heat flow channel 22. It is worth mentioning that the inner container 3 has good heat preservation characteristics, which ensures that the heat of the heat flow is as much as possible not to be dissipated through the inner container 3, and most of the heat flow is used for heating the water pool 24 and for the waste heat collection system 21.

[0047] In addition, the box body is further provided with an inclined handle 6 and a transverse handle 5, so as to facilitate the movement of the entire heater. The waste heat collection system 21 provides power for the power supply system, the control system and the fuel supply system. The fuel supply system is provided with a fuel tank 14, which provides fuel for the burner 19 in the entire heater. The power supply system and the control system do not belong to the focus of the present application, and will not be described here.

[0048] Any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A shallow-pan food ration heater with dual heat flow channels, comprising: The housing and combustion chamber assembly (11) has a heating water tank (24) on the upper part of the housing, and a waste heat collection system (21) is installed on the lower surface of the bottom wall of the heating water tank (24); the side wall of the heating water tank (24) is sealed with an inner liner (3), and a connection hole (31) is provided on the bottom wall of the inner liner (3). The combustion chamber assembly (11) is characterized in that the inner combustion chamber forms a second outlet (116) and a first outlet (115) through an upwardly extending guide plate (111); a fire baffle (9) is provided in the inner liner (3), the fire baffle (9) contacts and covers the guide plate (111) passing through the connecting hole (31), the fire baffle (9) contacts the inner wall of the inner liner (3) on three sides, and forms a first heat flow channel (23) between the fire baffle (9) and the bottom wall of the inner liner (3), and forms a second heat flow channel (22) between the fire baffle (9) and the bottom wall of the heating water tank (24), and the end of the first heat flow channel (23) is connected to the second heat flow channel (22); wherein the heat flow in the first heat flow channel (23) is not heated by the heating water tank (24); The guide plate (111) is composed of three plates connected vertically in sequence, and the first outlet (115) is formed between the non-upward open end of the guide plate (111) and the surface of the shell of the combustion chamber body (112). The second outlet (116) is square and extends upward through the guide plate (111); The length of the fireproof plate (9) is less than the length of the bottom wall of the inner liner (3); the fireproof plate (9) is provided with a plurality of rectangularly arranged guide holes (91). The heat flow comes out from the combustion chamber and enters the first heat flow channel (23) through the first outlet (115) and flows from left to right. When the heat flow reaches the right side of the inner liner (3), it flows upward through the gap between the fire baffle (9) and the other side wall of the inner liner (3) and enters the second heat flow channel (22), forming a double-layer heat flow channel structure. The heat flow can also flow upward through the second outlet (116) and the guide hole (91) on the fire baffle (9). The heat flow upward through the second outlet (116) and the heat flow circulating to the guide hole (91) through the second heat flow channel (22) merge.

2. The shallow-pan ration heater with dual heat flow channels as described in claim 1, characterized in that, Flanges (113) are provided on the upper periphery of the outer shell of the combustion chamber body (112) in the combustion chamber assembly (11) to install the combustion chamber assembly (11) with the inner liner (3).

3. The shallow-pan ration heater with dual heat flow channels as described in claim 1, characterized in that, The heating water tank (24) is provided with a protective pipe (16) on its side wall, and the inside of the protective pipe (16) is filled with heat insulation material.

4. The shallow-pan ration heater with dual heat flow channels as described in claim 1, characterized in that, The bottom of the inner liner (3) is supported by the support legs (10) on the box frame (13) in the box body.

5. The shallow-pan ration heater with dual heat flow channels as described in claim 1, characterized in that, The combustion chamber assembly (11) is also provided with a burner (19), and the combustion chamber assembly (11) is connected to the burner (19) through a connecting pipe (114).

6. The shallow-pan ration heater with dual heat flow channels as described in claim 1, characterized in that, The inner liner (3) is connected to the outer flue (7) and the inner flue (8). The outer flue (7), the inner flue (8) and the combustion chamber assembly (11) are located on the same side of the housing.

7. The shallow-pan ration heater with dual heat flow channels as described in claim 1, characterized in that, The waste heat collection system (21) is a thermoelectric power generation module, which is composed of multiple TEG modules (211) connected in series. A graphene layer (212) is provided between the TEG module (211) and the bottom wall of the heating water tank (24). The graphene layer (212) is attached to the bottom plate of the TEG module (211) and the bottom wall of the heating water tank (24).

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