A heating and insulation box

Abstract

The invention discloses a heating and heat preservation box, comprising a box shell, a cover body movable to cover the top opening of the box shell, and a temperature control device, wherein the temperature control device is composed of a catalyst layer, a heat transfer oil tank, an air intake structure and an air outlet, and the box shell and the heat transfer oil tank form a storage space for articles; a catalyst is laid in the catalyst layer, and an alcohol-based fuel is installed in the air intake structure; the invention utilizes the alcohol-based fuel and air to undergo a catalytic flameless combustion reaction to generate heat, and transfers the heat to food and other articles in the heat preservation box through the heat transfer oil, and the entire reaction process is environmentally friendly, pressure-free, and free of open flames, is easy to carry, and has a low production cost.

Description

Technical Field

[0001] The invention belongs to the technical field of thermal insulation boxes, and in particular relates to a movable heating thermal insulation box. Background Art

[0002] When food is transported outdoors or stored outdoors, an urgent problem is how to maintain the storage and transportation temperature of food. With the rapid development of the takeout industry, the importance of this issue has become increasingly prominent. How to maintain the storage temperature and hygiene of food during the takeout transportation process has become an important indicator for measuring takeout service companies, and it also directly determines the company's market share and customer satisfaction. In addition, during outdoor activities, it is sometimes necessary to store important equipment and food at a constant temperature, which can not only reduce the loss of raw materials but also improve people's experience. According to market demand, people have invested a lot of manpower and material resources to develop and design incubators for takeout transportation and outdoor use; there are many types of incubators on the market, which are divided into different types according to the different textures of the products, including plastic, foam, metal, wooden and other incubators.

[0003] Most of the existing thermal insulation boxes only have a heat preservation effect, but cannot heat food. After being placed in the thermal insulation box for a long time, the food will still lose a lot of heat, which cannot meet the use requirements. The food needs to be put into a microwave oven or other devices for heating again, which is time-consuming and labor-intensive and cannot meet people's needs. Therefore, a heating thermal insulation box came into being. For example, patent CN107031989A discloses a foam thermal insulation box for heating, including a box body and a heating device. The box body includes a foam layer and a rock wool layer from the outside to the inside. The heating device includes a plurality of heating plates arranged on the inner wall of the box body, a temperature sensor extending from the top of the box body to the inside, and a controller for controlling the opening and closing of the heating plates. The temperature sensor transmits the received temperature information to the controller, and the controller controls the opening and closing of various heating plates according to the temperature information in the box body. The heating plate is installed on the rock wool layer. The foam thermal insulation box of this technical solution not only has a good heat preservation effect but also has a heating function. However, the heating method adopted is electric heating, which has certain safety hazards. Moreover, when the thermal insulation box is used, a power supply is required, which is inconvenient to carry out. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a heating and insulation box, in which alcohol-based fuel and air undergo a catalytic flameless combustion reaction under the action of a catalyst, and heat is transferred to food and other items in the insulation box through heat transfer oil. The entire reaction process is environmentally friendly, has no open flame, is easy to carry, and has low production and manufacturing costs.

[0005] The technical solution provided by the present invention is as follows:

[0006] A heating and heat preservation box comprises a box shell, a cover body movable to cover the top opening of the box shell, and a temperature control device, wherein the temperature control device is composed of a catalyst layer, a heat transfer oil tank and an air intake structure, the heat transfer oil tank is in a "∟" shape and forms two surfaces of the box shell, the catalyst layer is arranged below the heat transfer oil tank and connected thereto, the air intake structure is arranged on the outer side of the heat transfer oil tank and connected to the box shell, the air intake structure is vertically connected to one end of the catalyst layer, the two are arranged in communication, and an air outlet is arranged at the bottom of the other end of the catalyst layer; the box shell and the heat transfer oil tank form a storage space for placing items, a catalyst is laid in the catalyst layer, and an alcohol-based fuel is installed in the air intake structure.

[0007] Preferably, the air intake structure contains an air inlet and an air intake channel, which are arranged in communication with each other, and the air inlet is arranged above the side of the air intake structure; baffle I and baffle II are arranged in the air intake channel, and the lengths of the two are equal and smaller than the height of the air intake structure, baffle I and baffle II are arranged in parallel and staggered, baffle I is close to the air inlet, one end of baffle I is connected to the inner side of the top of the air intake channel, and the other end is suspended, one end of baffle II is connected to the inner side of the bottom of the air intake channel, and the other end is suspended, and the outlet end of the air intake structure is connected to the catalyst layer.

[0008] Preferably, it also includes an alcohol-based fuel storage block made of lime material and located at the bottom inner side of the air intake passage, and the baffle I is partially inserted into the alcohol-based fuel storage block.

[0009] Preferably, the alcohol-based fuel storage block is impregnated with alcohol-based fuel, and the alcohol-based fuel is preferably ethanol liquid.

[0010] Preferably, an alcohol-based fuel replenishing port is provided at the top of the air intake structure, the alcohol-based fuel replenishing port is communicated with the inside of the air intake channel, and a sealing cover is provided on the alcohol-based fuel replenishing port.

[0011] Preferably, heat-conducting oil is arranged in the heat-conducting oil tank, and the interiors thereof are communicated, wherein the height of the heat-conducting oil located at the side of the heat-conducting oil tank is 2 / 3 to 3 / 4 of the height of the entire heat-conducting oil tank.

[0012] More preferably, an electric heating tube is provided at the corner of the "∟"-shaped structure of the heat transfer oil tank, the electric heating tube is connected to a power cord, and the power cord extends out of the heating and insulation box; the electric heating tube is a DC 30W electric heating tube.

[0013] Preferably, the length of the catalyst layer in the horizontal direction is greater than the length of the thermal oil tank.

[0014] Preferably, the other three side surfaces of the box shell not located at the heat-conducting oil groove and the interior of the cover are filled with foam material.

[0015] Preferably, the air outlet is filled with a sand core; the sand core is provided with a plurality of holes communicating with the outside atmosphere.

[0016] Compared with the prior art, the present invention has the following technical advantages:

[0017] (1) The present invention utilizes ethanol and air to generate heat by catalytic combustion reaction under the action of a catalyst, and the heat obtained is then transferred to the items in the heating insulation box through the heat transfer oil. The entire reaction process is free of open flames, environmentally friendly, does not require external power supply, is stress-free, and is easy to carry. When the ethanol is used up, ethanol can be added from the refill port, which is simple to operate;

[0018] (2) The maximum temperature of the ethanol catalytic combustion reaction in the present invention is about 580°C, while the auto-ignition temperature of ethanol is about 793°C. In addition, after the ethanol catalytic reaction generates heat, most of the heat will be absorbed by the heat transfer oil and then transferred to the items in the insulation box. Only a small part of the heat will diffuse to the surrounding area and will not cause spontaneous combustion of the substances in the air intake structure. There is basically no safety hazard. In addition, ethanol catalytic combustion produces CO2 and H2O, which is environmentally friendly and pollution-free. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the three-dimensional structure of the present invention

[0020] Figure 2 Schematic diagram of the three-dimensional structure of the present invention

[0021] Figure 3 Schematic diagram of the three-dimensional structure of the present invention when viewed from above

[0022] Figure 4 Schematic diagram of the internal structure of the present invention

[0023] Figure 5 The schematic diagram of the structure of the heat transfer oil tank of the present invention is

[0024] Wherein: 1. Box shell 2. Cover 3. Catalyst layer 4. Thermal oil tank 5. Air outlet 6. Accommodating space 7. Thermal oil 8. Catalyst 9. Power cord 10. Air inlet channel 11. Air inlet 12. Baffle I 13. Baffle II 14. Outlet end 15. Alcohol-based fuel storage block 16. Ethanol liquid replenishment port 17. Electric heating tube. DETAILED DESCRIPTION

[0025] The present invention will now be further described with reference to specific embodiments and accompanying drawings.

[0026] like Figures 1 to 4As shown, the present invention discloses a heating and insulation box, which is a rectangular parallelepiped structure as a whole, including a box shell 1, a cover 2 that is movably covered on the top opening of the box shell 1, and a temperature control device, wherein the temperature control device is composed of a catalyst layer 3, a heat transfer oil tank 4 and an air intake structure, wherein the catalyst layer 3 is arranged below the heat transfer oil tank 4 and connected thereto, the air intake structure is arranged on the outer side of the heat transfer oil tank 4 and connected thereto the box shell 1, and the box shell 1 and the heat transfer oil tank 4 form a accommodating space 6 for placing items.

[0027] The heat transfer oil tank 4 is in the shape of "∟" and is made of two rectangular stainless steel materials. Heat transfer oil 7 is arranged inside the heat transfer oil tank 4, and the interiors thereof are connected. Among them, the height of the heat transfer oil 7 in the heat transfer oil tank located on the side of the heat transfer oil tank 4, that is, in the vertical direction, is 3 / 4 of the height of the entire heat transfer oil tank 4.

[0028] The catalyst layer 3 is arranged below the heat transfer oil tank 4 and fixedly connected thereto by heat conductive adhesive. The catalyst layer 3 is also a rectangular structure, whose horizontal length is greater than that of the heat transfer oil tank 4 and the widths of the two are equal. The catalyst 8 is laid in the catalyst layer 3.

[0029] The air intake structure comprises an air intake port 11 and an air intake channel 10, which are arranged in communication with each other. The air intake structure is vertically connected to one end of the catalyst layer 3, and the two are arranged in communication with each other. An air outlet 5 is arranged at the bottom of the other end of the catalyst layer 3. The air intake structure is a rectangular structure as a whole. In the vertical direction, its height is greater than the height of the thermal oil groove 4, and its width in the horizontal direction is the same as the width of the catalyst layer 3; the air intake port 11 is arranged above the outer side surface of the air intake structure, that is, a side surface arranged parallel to the thermal oil groove 4, and the air intake channel 10 is composed of a baffle I 12 and a baffle II 13, and the lengths of the two are equal and smaller than the height of the air intake structure. The baffle I 12 and the baffle II 13 are arranged in parallel and staggered, and the baffle I 12 is close to the air intake port 11, and the baffle II 13 is arranged in parallel and staggered. One end of Ⅰ12 is connected to the inner side of the top of the intake channel 10, and the other end is suspended. One end of the baffle Ⅱ13 is connected to the inner side of the bottom of the intake channel 10, and the other end is suspended. The outlet end 14 of the intake structure is connected to the end of the catalyst layer 3. On the inner side of the bottom of the intake channel 10, an alcohol-based fuel storage block 15 is provided. The baffle Ⅰ12 is partially inserted into the alcohol-based fuel storage block 15. The height of the alcohol-based fuel storage block 15 is 1 / 3 of the height of the entire intake structure. The alcohol-based fuel storage block 15 is immersed in ethanol liquid. An ethanol liquid replenishing port 16 is provided on the top of the intake structure. The ethanol liquid replenishing port 16 is communicated with the inside of the intake structure, and a sealing cover (not marked in the figure) is provided on the ethanol liquid replenishing port 16.

[0030] The present invention utilizes ethanol to generate flameless catalytic combustion with air under the action of catalyst 8, and generates heat, which is then dissipated to the inside of the box shell 1 through heat transfer oil 7, so as to heat the items inside the box shell 1 or ensure that the items are in an environment with a certain temperature. The present invention does not describe in detail the reaction principle of flameless catalytic combustion of ethanol, and for details, see the paper "Catalytic Combustion of Ethanol on Ferrite Catalyst 8" published by Yang Yuxia et al.

[0031] In actual use, after the heating and insulation box is installed according to the diagram of the present invention, taking the user as a delivery man as an example, the delivery man carries the heating and insulation box on his back, wherein one side of the air inlet 11 of the heating and insulation box is in contact with the back. When the delivery man is riding, the air inlet 11 is directly facing the riding direction of the delivery man. When the delivery man is riding, a large amount of air will pass through the air inlet 11 and flow into the air intake channel. After passing through the alcohol-based fuel storage block 15 soaked in ethanol and being fully mixed with ethanol, it enters the catalyst layer 3. Under the action of the catalyst 8, the two undergo a catalytic combustion reaction, and then the heat is transferred through the heat transfer oil 7. When the food in the heated insulation box is handed over, ethanol reacts with air to produce CO2 and H2O gases, which are then discharged into the outside atmosphere through the outlet 5; when the deliveryman is not riding, the amount of air entering the air intake passage is not much, but a small amount of ethanol and air can still enter the catalyst layer 3, and a catalytic combustion reaction occurs, but the heat generated at this time is less, and when the deliveryman is riding, as the amount of air entering increases, the catalytic reaction is accelerated, and the heat generated will also increase; when the ethanol liquid is used up, the ethanol liquid replenishing port 16 on the top of the air intake structure can be opened, and ethanol liquid can be poured into the air intake passage.

[0032] Ethanol can undergo catalytic combustion reaction at low or normal temperature. Figure 5 As shown, we can install a DC 30W electric heating tube 17 at the corner of the "∟"-shaped structure of the heat transfer oil tank 4. The electric heating tube 17 is connected to a power cord 9, and the power cord 9 extends out of the heating and insulation box; after the electric heating tube 17 generates heat, it is transferred to the catalyst layer 3 to provide a temperature environment for the reaction of ethanol and air. Once the catalytic combustion reaction is started and heat is generated, the power supply can be unplugged to carry out the delivery of the takeaway.

[0033] In order to reduce the diffusion rate of heat from the heating and insulation box to the outside atmosphere, the user can also fill the inside of the box shell 1 and the cover 2 with foam material. However, the temperatures at the two surfaces of the catalyst layer 3 and the air intake structure of the heating and insulation box are relatively high, so the inside of the box shell 1 at these two surfaces may not be filled with foam material. In addition, when a granular catalyst 8 that is easy to leak out from the air outlet 5 is placed in the catalyst layer 3, a sand core (not shown in the figure) may be arranged at the air outlet 5. The sand core is provided with a plurality of holes that communicate with the outside atmosphere. While preventing the catalyst 8 from leaking out, the gas generated by the catalytic reaction can diffuse from the holes on the sand core into the outside atmosphere.

Claims

1. A heating and heat preservation box, comprising a box shell, a cover body movable to cover the top opening of the box shell, and a temperature control device, characterized in that: The temperature control device is composed of a catalyst layer, a heat transfer oil tank and an air intake structure. The heat transfer oil tank is in a "∟" shape and forms two surfaces of the housing. The catalyst layer is arranged below the heat transfer oil tank and connected thereto. The air intake structure is arranged on the outer side of the heat transfer oil tank and connected to the housing. The air intake structure is vertically connected to one end of the catalyst layer, and the two are arranged in communication. An air outlet is arranged at the bottom of the other end of the catalyst layer. The housing and the heat transfer oil tank form a storage space for placing items. A catalyst is laid in the catalyst layer, and an alcohol-based fuel is installed in the air intake structure. The length of the catalyst layer in the horizontal direction is greater than the length of the heat transfer oil tank; The other three sides of the box shell where the heat-conducting oil tank is not located and the interior of the cover are filled with foam material; The air outlet is filled with a sand core; the sand core is provided with a plurality of holes communicating with the outside atmosphere.

2. A heating and insulation box according to claim 1, characterized in that: The air intake structure comprises an air inlet and an air intake channel, which are arranged in communication with each other, and the air inlet is arranged above the side of the air intake structure; a baffle I and a baffle II are arranged in the air intake channel, and the lengths of the baffles are equal and smaller than the height of the air intake structure, and the baffles I and the baffles II are arranged in parallel and staggered, with baffle I close to the air inlet, one end of baffle I is connected to the inner side of the top of the air intake channel, and the other end is suspended, one end of baffle II is connected to the inner side of the bottom of the air intake channel, and the other end is suspended, and the outlet end of the air intake structure is connected to the catalyst layer.

3. A heating and insulation box according to claim 2, characterized in that: It also includes an alcohol-based fuel storage block made of lime material and located at the bottom inner side of the intake passage, and the baffle I is partially inserted into the alcohol-based fuel storage block.

4. A heating and insulation box according to claim 3, characterized in that: The alcohol-based fuel storage block is soaked with alcohol-based fuel, and the alcohol-based fuel is ethanol liquid.

5. A heating and insulation box according to claim 2, characterized in that: An alcohol-based fuel replenishing port is arranged on the top of the air intake structure. The alcohol-based fuel replenishing port is communicated with the inside of the air intake channel. A sealing cover is arranged on the alcohol-based fuel replenishing port.

6. A heating and insulation box according to claim 1, characterized in that: The heat-conducting oil tank is filled with heat-conducting oil, and the interiors thereof are communicated with each other, wherein the height of the heat-conducting oil at the side of the heat-conducting oil tank is 2 / 3 to 3 / 4 of the height of the entire heat-conducting oil tank.

7. A heating and insulation box according to claim 6, characterized in that: An electric heating tube is arranged at the corner of the "∟"-shaped structure of the heat transfer oil tank. The electric heating tube is connected with a power line, and the power line extends out of the heating and insulation box. The electric heating tube is a DC 30W electric heating tube.

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