CN100377680C - Heating device and method for heating food in transit - Google Patents

Abstract

A heating apparatus (10) for heating food in transit includes a carriage (12) movable relative to a base frame. A plurality of support frames (22) are arranged on the bracket (12), and each support frame (22) can be used for supporting a food container positioned above the bracket (12). A fuel-fired heating device (40) is operatively arranged relative to the support frame (22) such that heat generated by the heating device (40) is directly applied to the respective food container.

Description

Heating apparatus and method for heating conveyed food

field of invention

The present invention relates to a food heating device and method, in particular to a heating device for heating the food being conveyed and a method for heating the food being conveyed.

Background technique

Currently, the technology of automatically delivering prepared food is well known and more commonly used for delivering prepared Asian food. For example, in sushi restaurants, it has become commonplace to deliver food to customers on movable trays that can be moved back and forth in aisles around the restaurant's self-serve area. Currently, the above-described techniques for delivering prepared food are suitable for serving food at room temperature.

A problem thus arises, namely how to use this technology to serve food with a certain heat. In this case, the food has to be reheated intermittently. Therefore, food can only be taken off from the bracket frequently, and placed back on the bracket after heating. Doing so is not only inefficient but also laborious.

Contents of the invention

According to the content of the first technical solution of the present invention, there is provided a heating device for heating food in transport, the device comprising:

a bracket movable relative to the base frame;

a plurality of support frames arranged on the bracket, each support frame can be used to support a food container located above the bracket; and

Several fuel combustion heating devices are arranged relative to the support frame, so that the heat generated by the heating equipment can directly act on the respective food containers.

The carriage may be an elongated, articulated device forming a closed circuit and actuatable along a closed curve defined by the base frame.

Each support frame may include a generally planar support member mounted in a nested fashion on said bracket.

Each support frame may also include several brackets, each bracket is respectively installed on a respective support member, and each bracket includes a bottom surface and a side wall, the bottom surface is in contact with the respective support member, and the side wall is in contact with the respective support member. The food container contacts to support the food container above the bottom surface.

Each fuel combustion heating device may include a gas burner assembly fixed on the bracket and connected to a gas source. container, directly toward the food container.

The heating equipment may include a number of valve assemblies fixed on the bracket, the gas source and the valve assembly are firmly connected to each other, and the gas source is a number of gas tanks, and each valve assembly is connected to its corresponding The gas burner assembly is articulated to supply fuel to the gas burner assembly.

The heating device may include several valve control arms, each valve control arm runs through the bracket and its corresponding support frame to be connected with its corresponding valve assembly, and the valve is opened or closed by manipulating the valve control arm components.

Each valve control arm can pass through an opening provided on the bottom surface of the respective corresponding bracket, so that the valve control arm can be actuated from above the bottom surface of the bracket.

Each valve assembly includes an outlet that can be movably connected to the respective gas burner assembly, and a safety valve assembly located between the outlet and the gas burner assembly. When the gas burner assembly stops working, the safety valve assembly The valve assembly shuts off gas supply to the gas burner.

The safety valve assembly may include a safety valve and a thermocouple set for the safety valve assembly. When the thermocouple detects that the temperature in the area of the burner assembly is lower than a preset value, the safety valve is activated to close the flow to the burner. Gas supply for components.

The heating device may include an ignition mechanism operable by a user to ignite the burner assembly. The ignition mechanism may include a push rod and a piezoelectric ignition device, the push rod penetrates the bottom surface of the bracket, so that the user can touch the push rod from above the bottom surface of the bracket, and the push rod is also connected to the bottom surface of the bracket. A piezoelectric ignition device is connected such that the user can ignite the gas burner assembly by depressing the push rod.

The relief valve is normally closed and is set to close upon receipt of an appropriate signal from the thermocouple, the relief valve including an override control connected to the push rod mechanism, so depressing the pushrod causes the override safety valve to open, releasing gas to the gas burner assembly for ignition.

The support member may be spaced apart from the bracket such that an area is formed therebetween.

Each supporting member has a base member and a heating member. The heating member may be mounted on the base member. The heating members may be spaced apart from the base members such that a heating zone is formed between each base member and the corresponding heating member. The heating member can be made of heat conducting material. Also, the heating member can be used to place the food container.

Each heating unit may employ a gas burner. Each gas burner may include a gas regulator respectively installed in a region between the bracket and the supporting member. Moreover, said gas burner includes at least one burner nozzle that can extend into said heating zone, so that the flame heat emitted from the or each burner nozzle can be dispersed to the lower part of said heating member. surface.

The gas regulator includes a connecting piece for fixing the gas cylinder or the gas cylinder on the regulator. The connectors may be conventional connectors of the type used eg for gas cylinders, suitable for activities such as camping and other activities requiring a compact and lightweight gas cylinder. The heating device then also comprises fitting means mounted in the area between the support member and the bracket for fitting the gas cylinder in place.

The assembly means may be several brackets arranged on the bracket. This bracket is used to hold replaceable gas cylinders. Thus, each regulator can be connected to the gas cylinder.

Each gas burner includes an ignition switch that allows the user to ignite the burner when heating is required.

Each regulator includes a heat regulating valve. The heat regulating valve can be adjusted manually. However, it is obvious that the heat regulating valve can also be adjusted remotely.

In another variant embodiment, the heating device comprises a separate regulator rotatably mounted on the gas bottle. This individual regulator is directly connected to each gas burner by suitable piping. Alternatively, the individual regulators may also be connected to each regulator in the previous embodiment by suitable conduits. It can thus be seen that when the bracket moves relative to the base frame, the individual adjuster can rotate to accommodate the movement of the bracket.

Obviously, it is inconvenient to have a separate gas bottle for each burner. In this case, the heating device may include several brackets, and each bracket is connected to the bracket, so as to effectively constrain the gas bottle to be located under the bracket. A multiplexer can be arranged relative to the bracket. The multiplexer includes two or more outlet pipes. Each outlet pipe is connected with its own burner, and the input pipe can be connected with the gas bottle.

The bracket holds conventional LPG cylinders in place. Thus, an input line can be connected to the output valve of said cylinder.

Another embodiment of the present invention is particularly suitable for use with gas supplied from a location remote from the cradle. This includes gas supplied from one or more high-capacity gas cylinders outside the location where the cradle is located, as well as gas supplied using a gas line.

The Applicant considers that the delivery of gas from the gas supply to the burner presents certain difficulties due to the fact that the carriage must remain in motion during use. Therefore, the applicant devised the following implementations to meet the requirement of continuous movement.

This embodiment includes a gas delivery mechanism that can be connected to a gas source. The gas conveying mechanism includes a conveying nozzle for conveying gas.

Several air storage tanks are also arranged on the bracket. Each gas storage container is connected with an inflation pipeline. The inflation pipeline includes an auxiliary inflation pipeline and a main inflation pipeline.

The gas delivery mechanism includes an inflation nozzle that can be flexibly connected to the main inflation pipeline. The delivery nozzle can be effectively connected with the inflation nozzle, and gas can be delivered to the main inflation pipeline through the inflation nozzle. The gas charging pipe and the gas storage container allow gas to be input to the gas storage tank when the delivery nozzle is movably connected to the gas charging nozzle. In addition, appropriate valves are provided to ensure that the gas can be kept in the gas storage tank.

In this embodiment, a drive mechanism of the bracket is provided, and the drive mechanism can be used to intermittently decelerate or stop the movement of the bracket so as to deliver gas to the gas storage tank. In particular, the drive mechanism can decelerate or stop the carriage at a specific position to ensure sufficient time to deliver gas to the gas storage tank.

Each gas storage tank can be respectively connected with at least one corresponding burner. As for the foregoing embodiments, the gas storage tanks may also be connected to respective burners through appropriate regulators.

Also, as previously stated, this embodiment also includes an ignition switch and valves for regulating heat.

According to the content of the second technical solution of the present invention, a method for heating food in transport is provided, the method includes the following steps:

placing the food container on a support frame disposed on a bracket movable relative to the base frame;

The food container is heated by means of a fuel burner arranged relative to the support frame such that heat generated from the heating device acts directly on the food container.

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

Description of drawings

In the attached picture:

Figure 1 is a schematic diagram of a first embodiment of a heating device for heating food in transport according to the present invention;

Fig. 2 is a schematic side view of a second embodiment of a heating device for heating food in transport according to the present invention;

Fig. 3 is a schematic side view of a third embodiment of a heating device for heating food in transport according to the present invention;

Fig. 4 is a schematic side view of a fourth embodiment of a heating device for heating food in transport according to the present invention;

Fig. 5 is a schematic side view of a fifth embodiment of the heating device for heating food in transport according to the present invention;

FIG. 6 is a schematic diagram of a conveying device timing device including the heating device of FIG. 5;

Fig. 7 is a schematic side view of the sixth embodiment of the heating device for heating food in transport according to the present invention;

Fig. 8 is a three-dimensional perspective view of the heating device in Fig. 7;

FIG. 9 is a top view of the heating shield of the heating apparatus of FIG. 7. FIG.

Detailed ways

In FIG. 1, reference numeral 10 designates a first embodiment of the heating device for heating food in transport according to the present invention.

The heating device includes a bracket 12 movable relative to a base frame (not shown in the figure). The bracket 12 is an elongated, hinged unit 14 .

The device 14 includes a number of link members or links 16 which are pivotable end to end to each other by means of pivots 18 and rollers 20 . The carrier 12 is a traditional carrier currently used for conveying prepared food. People call it more a "sushi turntable".

The conveying system 10 includes several support frames 22 . Each supporting frame is respectively installed on the respective link 16 and is located above the link 16 . In particular, the support frame 22 is assembled such that a region 24 is formed between each link 16 and its corresponding support frame.

Each support frame 22 includes a support member 26 . The support members 26 are each provided with two opposed, substantially planar surfaces 28 . Each end 30 of each support member 26 is shaped such that successive and adjacent support members 26 form a nested configuration with respect to each other, thereby allowing the support members 26 to move continuously along the curved path without significant spacing therebetween.

Each support frame includes a heating component 31 installed above each support member 26 , so that a heating zone 32 is formed between each support member 26 and the corresponding heating component 31 .

The heating device 10 also includes several fuel combustion heating devices 34 . Each device 34 includes a gas regulator 36 installed in the zone 24 . From each gas regulator 36 extends a nozzle arrangement 38 . Each nozzle arrangement 38 includes a number of gas nozzles 40 which pass through the respective support member 26 and into the heating zone 32 . After the gas nozzle 40 is positioned, the gas flame ejected from it can contact the lower surface 42 of the heating component 31 . The heating component is made of suitable heat conducting material, such as steel. Thus, the gas flame is used to supply heat to the heating element 31 . A food container can be placed on the heating element 31 so that the food remains at the same temperature as the container.

In the embodiment indicated by reference number 10, the regulator 36 can be connected to the gas cartridges 44 installed independently of each other. Each gas cylinder 44 is installed under the respective support member 26 respectively, and ensures that it can interact with the respective regulator 36 . Said device 10 then also comprises several mounting means in the form of pairs of retaining members 48 . After each pair of retaining members 48 is assembled, each corresponding gas cylinder 44 is held in a corresponding position in the area 44 .

The gas cylinder 44 can be shaped like a common small gas cylinder, such as a gas cylinder used for camping or other occasions that require light weight and free use. Then, after each gas regulator 36 is assembled, it can be used to adjust the corresponding gas cylinder 44 .

Each regulator 36 is also provided with a manually adjustable valve 46 enabling the gas flow ratio from the gas cartridge 44 to the respective nozzle arrangement 38 to be adjusted as required.

In FIG. 2, reference numeral 50 designates a second embodiment of the heating device of the present invention for heating conveyed food. Referring to Figure 1, like reference numerals denote like parts unless otherwise indicated.

The device 50 does not include the mounting device 48 . Instead, a single-pivot regulator 52 is provided, and the regulator 52 is pivotally assembled with the gas bottle, or acts on corresponding several gas bottles, and the gas bottle is shown as 54 . A plurality of pipes or gas lines 56 are connected to the regulator 52 at one end and to respective regulators 36 at the other end. Thus, as the bracket 12 moves relative to the base frame, the adjuster 52 is pivotable to accommodate the movement of the bracket. The gas regulator 52 also includes a manual regulating valve 58, so that the supply of gas can be completely cut off when necessary.

In FIG. 3, reference numeral 60 designates a third embodiment of the heating device for heating conveyed food according to the present invention. Referring to Figures 1 and 2, like reference numerals denote like parts unless otherwise indicated.

The heating device 60 is almost identical to the heating device 10 except that the gas cylinder 44 is replaced by a gas tank 62 . The gas tank 62 is placed in the tank bracket 64 . The tank support 64 should enable the gas tank 62 to be in an upright state when in use.

An adjustment arm 46 protruding from the regulator 36 passes through the link 16 and the support member 26 , so that the user can use it to adjust the gas flow through the regulator 36 .

The heating device 60 is particularly suitable for steaming food, a common method used in Asian cooking to keep food warm and moist. Therefore, the heating device 60 also includes a plurality of steam pots 66 mounted on respective support members 26 .

Each steam pot 66 includes a water tank 68 , and the bottom surface of the water tank 68 can be set as the heating component 31 . A mesh plate 70 that allows steam to pass is placed on the water tank 68 . On said plate 70 a conventional steamer basket 72 can be placed.

For safety, a stainless steel shield 74 is also installed around the water tank 68 .

The heating device 60 includes a thermometer 76 that extends into the tank 68 to maintain the correct temperature. In addition, the device 60 also includes a water level gauge 82, which is used to ensure that the user can determine that the water in the water tank 68 has not completely evaporated.

The heating device 60 also includes an ignition device 78 for the user to ignite the gas.

Vent holes 80 are also provided in the shroud 74 to allow the flame from the nozzle assembly to burn normally.

In FIG. 4, numeral 90 designates a fourth embodiment of the heating device for heating food in transport according to the present invention. Referring to FIGS. 1 to 3 , like reference numerals denote like parts unless otherwise indicated.

Obviously, it is not convenient to configure a separate gas tank for each nozzle device 38 . Therefore, the configuration of this embodiment uses several gas storage containers in the form of standard liquefied petroleum gas tanks, as shown at 92 .

Therefore, the heating device 90 also includes a support for several standard liquefied petroleum gas (1 pg) tanks, as shown at 94 . Each bracket 94 includes a hook 96, and the hook 96 is designed to engage with the corresponding position of the 1 pg tank 92 on the bottom surface of the valve assembly 98 of the tank 92.

A multi-way adjuster 100 is installed on the hook 96, and the multi-way adjuster 100 is connected and fixed with respective corresponding chain rings 16 with bolts. A main gas line 102 is connected between the valve assembly 98 and the input of the regulator 100 . An auxiliary gas pipeline 104 is connected between each output end of the regulator and each corresponding nozzle device 38 .

As an alternative to the steam pot 66, the device 90 includes a cast iron heating plate 106 mounted on the shroud 74 and configured as a heating plate. An internal cast iron heating plate 108 is also mounted above the nozzle assembly 38 .

In FIG. 5, reference numeral 110 designates a fifth embodiment of the heating device for heating food in transport according to the present invention. Referring to FIGS. 1 to 4 , like reference numerals denote like parts unless otherwise indicated.

The embodiment in FIG. 5 is particularly suitable for supplying gas from a location remote from said carrier 12 . Such a situation requires gas supply from a gas bottle store located outside the location where said bracket 12 is installed. In addition, it is also possible to introduce gas into the structure of the present invention through a gas pipeline. Usually refers to "city gas".

The heating device 110 includes a gas delivery mechanism 112 connected to the gas source. The gas delivery mechanism 112 includes a delivery nozzle 114 for delivering gas.

Several air containers or tanks 116 are mounted on the bracket. Each air tank 116 is connected to an air charging pipeline 118 . The inflation pipeline 118 includes a main inflation pipeline 118.1 and several auxiliary inflation pipelines 118.2.

The gas delivery mechanism 112 includes an inflation nozzle 120 flexibly connected to the main inflation pipeline 118.1. The delivery nozzle 114 can be connected with the gas charging nozzle 120, and guide gas to enter the main gas charging pipe 118.1 through the gas charging nozzle 120. The gas charging pipe 118 and the gas storage tank 116 allow gas to be input into the gas storage tank 116 when the delivery nozzle 114 is movably connected to the gas charging nozzle 120 . In addition, appropriate valves are provided to ensure that the gas can be kept in the gas storage tank 116 .

The delivery nozzle 114 is installed in a sleeve 122 which is connected to a pneumatic drive mechanism 124 . The pneumatic driving mechanism 124 can be used to inject gas into the casing 122 to drive the delivery nozzle 114 and the inflation nozzle 120 to move and connect.

The drive mechanism 126 for the carriage 12 is shown in FIG. 6 . The mechanism 126 is arranged so that it can stop the movement of the bracket 12 intermittently to refill the gas storage tank 116 with gas. Obviously, the drive mechanism 126 should be able to stop the carriage 12 when the delivery nozzle 114 is aligned with the inflation nozzle 120 . At this point, the pneumatic drive mechanism 124 is activated.

The drive mechanism 126 includes an electric motor 128 for driving a gearbox 130 . Next, the gearbox 130 is connected via a suitable gear transmission 132 to a sprocket 134 operatively engaged with the bracket 12 .

In order to make the drive mechanism 126 stop intermittently, the motor 128 is connected to the power supply 136 via a timing mechanism 138 . The timing mechanism 138 includes a sensor 139 for recording the position of the bracket 12 , a manually adjustable setter 140 and a device 142 for displaying time, so that the user can set the timing mechanism 138 conveniently. Therefore, the timing mechanism can be set according to the operation of the pneumatic driving mechanism 124 , so that the inflation nozzle 120 can be positioned correctly, thereby realizing the connection between the delivery nozzle 114 and the inflation nozzle 120 .

In Fig. 7 and Fig. 8, reference numeral 150 refers to a sixth embodiment of the heating device for heating food in transport according to the present invention. Referring to FIGS. 1 to 6 , like reference numerals denote like parts unless otherwise indicated.

In the following description, only a single heating stage 156 is described for simplicity. Obviously, the heating device 150 includes several heating stages 156 .

As shown, each link member 16 includes an upper link plate 158 , a lower link plate 160 spaced from the upper link plate 158 . Each link plate 158 , 160 is provided with a first end portion 162 , a middle portion 164 and a second end portion 166 . The link members 16 are fitted together such that the respective portions 162, 164 and 166 of the upper link plate 158, lower link plate 160 are aligned with each other. The intermediate portion 164 is angled relative to the first and second end portions 162, 166 such that the second end portion 166 of the preceding link member 16 is inserted between the first end portion 162 of the subsequent linking member 16 between.

The heating device 150 includes a valve assembly 152 firmly connected with the bracket 12 . The valve assembly 152 includes a control arm assembly 154, the control arm assembly 154 sequentially passes through the first end portion 162 of the latter link member 16, the second end portion 166 of the link member 16 overlapping with it and the The rollers 20 between the second end portions 166 of the link members 16 . Thus, the link members 16 are pivotally connected to each other by the control arm assembly 154 .

The control arm assembly 154 includes a main shaft 168 extending from an upper end 170 above the support member 26 to an opposite end to a valve cover 172 .

The spindle 168 has an upper threaded formation 174 that engages a nut and jam nut combination 176 located on the support member 26 .

Nylon is installed between the first and second end portions 162, 166 of the upper link plate 158 of the link member 16, and between the first and second end portions 162, 166 of the lower link plate 160 of the link member 16. Gasket 178. The nylon washer 178 is provided with a channel allowing the main shaft 168 to pass through.

A collar 180 is disposed within the roller 20 and extends between the second end portions 166 such that the main shaft 168 can pass through the collar 180 .

On the portion of the main shaft 168 that is located within the collar 180, an O-ring groove 182 is formed. An O-ring is provided in the groove 182 to support the inner wall surface of the collar 180 airtightly.

As the bonnet 172 protrudes from the end collar 184 , the end collar 184 is securely connected to the spindle 168 proximate to the bonnet 172 . The end collar 184 is threadedly connected to the valve body 186 so that the valve cap 172 can protrude into the valve body of the previous link member 16 . Between the first end portion 162 of the lower link plate 160 of said latter link member 16 and said end collar 184, a copper bushing 185 is interposed.

The main shaft 168 is also provided with another O-ring groove 188 located in the valve body 186 . An O-ring is provided in the groove 188 to support the valve body 186 airtight.

A valve seat 190 is provided at an inlet 192 of the valve body 186 . The valve body 186 is fixed on a gas bottle or a gas tank 194 . After the valve cover 172 is installed and positioned, through proper rotation of the main shaft 168 , the valve cover 172 can squeeze the valve seat 190 to close the inlet 192 , or can disengage from the valve seat 190 to open the inlet 192 . Therefore, the user can control the flow of gas input from the gas tank 194 to the valve body 186 by manipulating the spindle 168 . To achieve the above purpose, the control arm assembly 154 includes a handle 196 connected to the upper end 170 of the main shaft 168 to allow the user to rotate the main shaft 168 .

The gas tank 194 can store suitable combustible gas, such as liquefied petroleum gas. The valve body 186 also includes a suitable mounting structure 198 for positioning the inflation adapter on the valve body 186 so that the gas tank 194 can be inflated.

The valve seat 186 is provided with an outlet, and has an outlet pipe 200 fixed to the valve seat 186 at the outlet.

The outlet pipe 200 is fixed together with the safety valve 202 at the inlet of the safety valve 202 . The safety valve 202 is normally in a closed state, and includes a solenoid coil 204 for opening the safety valve 202 .

At the outlet of the safety valve 202 , an outlet pipe 206 is fixed with the safety valve 202 . The outlet conduit 206 is connected to a burner assembly 208 .

The burner assembly 208 includes a jet shield 210 secured to the first end portion 162 of the lower link plate 160 of the preceding link member 16 . A replaceable gas spray head 212 is installed in the spray housing 210 , and the gas spray head 212 is connected to the outlet pipe 206 . The gas nozzle 212 may provide suitable gas to the burner nozzle 214 that passes through the support member 26 and is located above the support member 26 .

When the solenoid 204 receives a signal from a thermocouple (indicated at 216 in the figure), the solenoid 204 is activated. In particular, the solenoid keeps the safety valve 202 open when the thermocouple 216 detects that the temperature has exceeded a preset value. To achieve the above purpose, the thermocouple 216 is provided with a sensing tube 218 extending from the safety valve 202 to a sensor 220 located near the burner nozzle 214 . Therefore, when the flame on the burner nozzle 214 is extinguished, the thermocouple no longer detects the above-mentioned temperature preset value, and the safety valve 202 cuts off the gas supply.

An override pushrod 222 extends through the support member 26 and the second end portion 106 of the preceding link 16 . The override control push rod 222 is connected with the solenoid coil 204 and is used for manually controlling the solenoid coil 204 to open the safety valve 202 so as to release gas to the burner assembly 208 .

On the first end portion 162 of the lower link plate 160 of the latter link member 16 , an ignition mechanism in the form of a battery-powered piezoelectric ignition device 224 is fixed. The start button 226 of the piezoelectric ignition device 224 penetrates the second end portion 166 of the lower link plate 160 of the preceding link member 16 .

The ignition wire 230 of the ignition device 224 extends to a position close to the burner nozzle 214 so that the spark generated by the ignition wire 230 can ignite the gas. The ignition device 224 should be capable of producing a sustainable spark.

A protrusion 228 is fixed on the push rod 222 , and the protrusion 228 can be in contact with the start button 226 of the piezoelectric ignition device 224 . Therefore, when the push rod 222 is depressed, the safety valve 202 opens and delivers gas to the burner assembly 208 . Simultaneously, the ignition device 224 creates a sustainable spark at the burner nozzle 214 to ignite the gas.

The gas tank can be readily understood to be replaced with a city gas supply using appropriate fittings.

Another outlet pipe 232 is connected to the valve body 186 so that the gas tank 194 is connected to the safety valve of the previous heating station 156 . The other outlet pipe 232 includes a section of flexible pipe 234 to accommodate the relative movement of the heating table 156 .

A burner shroud 236 is attached to the support member 26 . The combustor shroud includes a bottom surface 238 and side walls 240 . The burner guard 236 is made of stainless steel.

The bottom surface 238 defines a push rod opening 242 for receiving the push rod 222 . Thus, a user can access push rod 222 from within shroud 236 .

The bottom surface 238 is provided with a burner nozzle and a thermocouple sensor opening 244 for accommodating the burner nozzle 214 and the thermocouple sensor 220 .

The bottom surface 238 also defines a spindle opening 246 for receiving the spindle 168 .

A slot 249 is opened on the side wall 240 for placing the handle 196 passing through the slot 249 . Accordingly, a user may adjust the flow of gas delivered to the burner nozzle 214 from outside the burner shroud 236 .

The side wall 240 is shaped to receive a stainless steel steam bowl 247 . The side wall is provided with three support structures 248 spaced apart from each other to support the steam bowl 247 . The steam bowl 247 is provided with a stainless steel wire mesh 250 spanning the bowl 247 and a support surface for heating food.

Airflow holes 252 are provided on each support structure 248 to allow air to flow into the gas burner nozzles 214 .

The applicant believes that the above embodiments of the heating device have provided an efficient and sustainable technical solution for heating the food in transit. This technical scheme is particularly suitable for being used in the restaurant of " food conveying line " formula that is just gradually becoming popular at present and is similar to the utensil of tea-drinking tea set.

Claims (13)

1. A heating device for heating food in transit, comprising: a bracket movable relative to the base frame; a plurality of support frames arranged on the bracket, each support frame can be used to support a food container located above the bracket; and Several fuel combustion heating devices are arranged relative to the support frame, so that the heat generated by the heating equipment can directly act on the respective food containers. 2. The heating apparatus of claim 1, wherein the carriage is an elongated, articulated device forming a closed circuit and drivable along a closed curve defined by the base frame. 3. A heating apparatus as claimed in claim 1 or 2, wherein each support bracket includes a generally planar support member mounted in a nested manner on the bracket. 4. The heating device according to claim 3, wherein each support frame further comprises a plurality of supports, each support is installed on a respective support member, and each support includes a bottom surface and a side wall, and the bottom surface and the respective The support member is in contact with the food container, and the side wall is in contact with the food container to support the food container above the bottom surface. 5. The heating device according to claim 4, wherein each fuel combustion heating device includes a gas burner assembly fixed on the bracket and connected to the gas source, and the gas burner assembly includes The support frame runs through the burner provided on the opening on the bottom surface of the support, directly facing the food container. 6. The heating device according to claim 5, wherein the heating device includes several valve assemblies fixed on the bracket, the gas source and the valve assembly are firmly connected to each other, and the gas source is There are several gas tanks, and each valve assembly is movably connected with its corresponding gas burner assembly, so as to supply fuel to the gas burner assembly. 7. The heating device according to claim 6, wherein the heating device comprises a plurality of valve control arms, each valve control arm runs through the bracket and its corresponding support frame to be connected with its corresponding valve assembly, The valve assembly is opened or closed by manipulating the valve control arm. 8. A heating apparatus as claimed in claim 7, wherein each valve control arm passes through an opening provided in the bottom surface of the respective corresponding bracket so that the valve control arm can be manipulated from above the bottom surface of the bracket. 9. The heating device according to any one of claims 6 to 8, wherein each valve assembly includes an outlet movably engageable with a respective gas burner assembly, and is located between the outlet and the gas burner assembly. There is a safety valve assembly between them, which cuts off the gas supplied to the gas burner when the gas burner assembly stops working. 10. The heating device according to claim 9, wherein the safety valve assembly comprises a safety valve and a thermocouple provided for the safety valve assembly, when the thermocouple detects that the temperature in the area of the burner assembly is lower than a predetermined When set, the safety valve activates to shut off the gas supply to the burner assembly. 11. The heating apparatus of claim 10, wherein the heating apparatus includes an ignition mechanism operable by a user to ignite the burner assembly. 12. The heating device according to claim 11, wherein the ignition mechanism comprises a push rod and a piezoelectric ignition device, and the push rod penetrates the bottom surface of the bracket, so that the user can touch the bottom surface of the bracket. The push rod is connected to the piezoelectric ignition device, so that the user can ignite the gas burner assembly by pressing down the push rod. 13. Heating apparatus as claimed in claim 12, wherein the safety valve is normally closed and is set to close upon receipt of an appropriate signal from the thermocouple, the safety valve The valve includes an override mechanism connected to the push rod so that depression of the push rod overrides the safety valve to an open state, thereby releasing gas to the gas burner assembly for ignition.

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