Heat preservation structure of automatic meal selling machine

Abstract

The heat preservation structure of the automatic meal selling machine comprises a meal cabinet and a control cabinet located on one side of the meal cabinet, a plurality of independent bins are arranged in the meal cabinet and used for storing meals, the front side of each bin is open and provided with a bin door, a bottom bin is arranged at the bottom of the meal cabinet, a heat source is installed in the bottom bin, and the heat source is connected with the control cabinet. A heat outlet connected with a heat source is formed in a rear side plate of each bin, and a tray capable of rotating is rotationally installed on the bottom face of each bin and used for bearing meals and driving the meals to rotate. The tray is used for supporting meals and rotating, uniform heating is achieved, it is guaranteed that the meals are fresh, and bacterium breeding and taste decline are avoided; meanwhile, the state and temperature of the bin are sensed in real time through the pressure and temperature detection unit, heat supply and tray rotation are automatically controlled through the control unit, electric energy is saved, nutritional ingredients are prevented from being damaged by excessive heating, and the freshness and taste of meals are effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic meal vending machine technical field, specifically a kind of heat preservation structure of automatic meal vending machine. BACKGROUND

[0002] The existing food vending machine mainly sells frozen fried rice, steamed buns and other frozen pre-prepared dishes. After purchase, consumers need to spend additional time to heat before consumption. Pre-prepared dishes result in loss of nutrients and damage to the taste of various delicacies. Freshness is poor, and long-term consumption is not conducive to health.

[0003] Automatic meal vending machines can sell a variety of meals processed on-site by "central kitchen". The original "front store and back kitchen" catering business model is eliminated, greatly reducing labor and operating costs. Automatic meal vending machines can provide 24-hour service without time and space constraints. Consumers can choose and purchase meals through the machine, and the machine will provide hot meals in a short time after payment, meeting the demand for instant consumption.

[0004] During storage, in order to ensure the freshness of the meal and avoid the growth of bacteria, the temperature inside the cabinet is usually maintained at about 60°C. Therefore, the existing automatic meal vending machines are equipped with heating systems, such as electric heating systems and steam heating systems. However, as long as there are meals stored in the cabinet, the heating system will be in operation. This not only wastes electricity, but also causes damage to the nutritional components of the meal and affects the freshness and taste of the meal due to excessive heating. SUMMARY

[0005] The utility model aims to overcome the defects and deficiencies of the prior art and provide a heat preservation structure for an automatic meal vending machine to ensure meal freshness, prevent bacterial growth and taste degradation. At the same time, it can save electricity and prevent excessive heating from damaging nutrients to ensure meal freshness and taste.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A heat preservation structure for an automatic meal vending machine includes a cabinet and a control cabinet located on one side of the cabinet. The interior of the cabinet is provided with a plurality of independent compartments for storing meals. The front side of each compartment is open and provided with a door. The bottom of the cabinet is provided with a bottom compartment, and the bottom compartment is provided with a heat source. The rear panel of each compartment is provided with a heat outlet connected to the heat source. A rotating tray is installed on the bottom surface of each compartment to support and rotate the meal.

[0008] Further, the control cabinet is provided with a control unit.

[0009] Further, the heat source adopts a hot air blower set, wherein the outlet end of each hot air blower is connected with a heat supply pipeline leading to the hot air outlet arranged in the same row, and the control unit is electrically connected with the hot air blower set.

[0010] Further, the bottom surface of each chamber is provided with a driving motor for driving the tray to rotate, and the control unit is electrically connected with the driving motor.

[0011] Further, the upper surface of the tray is embedded with a wireless pressure sensor, and the wireless pressure sensor is electrically connected with the control unit.

[0012] Further, the sidewall of each chamber is provided with a temperature sensor, and the temperature sensor is electrically connected with the control unit.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses a tray supports meal, and drives meal rotation in the storage process, so that each part of meal can alternately and orderly contact heat, and then obtains even heating, is favorable for better guarantee meal fresh, avoids breeding bacteria, and can avoid meal taste decline caused by local sustained heating etc. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic of the utility model Figure 1 .

[0016] Figure 2 It is the structure schematic of the utility model Figure 2 .

[0017] Figure 3 It is the structure schematic of the utility model Figure 2 A part of the structure enlarged schematic drawing of the utility model.

[0018] Figure 4 It is the electrical control principle block diagram of the utility model. DETAILED DESCRIPTION

[0019] Clearly and completely describe the technical scheme in the embodiments of the utility model with the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of the utility model protection.

[0020] Referring to Figures 1-4 A heat preservation structure of an automatic meal vending machine, comprising a meal cabinet 1 and a control cabinet 2 located at one side of the meal cabinet 1, the inside of the meal cabinet 1 is provided with a plurality of independent compartments 3 for storing meals, the front side of each compartment 3 is open and provided with a compartment door 4, the bottom of the meal cabinet 1 is provided with a bottom compartment 5, the bottom compartment 5 is provided with a heat source 6, the rear side plate of each compartment 3 is provided with a heat outlet 7 connected with the heat source, and a tray 8 capable of rotating is rotatably installed on the bottom surface of each compartment 3 and used for supporting and rotating the meals.

[0021] In the utility model, the inside of the control cabinet 2 is provided with a control unit.

[0022] In the utility model, the heat source 6 adopts a hot air unit, the outlet end of each hot air unit 6 is connected with a heat supply pipeline 9 leading to the heat outlet in the same column, the control unit is electrically connected with the hot air unit 6, so as to realize the control of the hot air unit 6.

[0023] In the utility model, the bottom surface of each compartment 3 is provided with a driving motor 10 for driving the tray 8 to rotate, and the control unit is electrically connected with the driving motor, so as to realize the control of the driving motor 10.

[0024] In the utility model, the upper surface of the tray 8 is embedded with a wireless pressure sensor 11, the wireless pressure sensor 11 is electrically connected with the control unit, and is used for sensing whether there is a meal on the tray 8 or not, that is, whether there is a meal in the compartment 3.

[0025] In the utility model, the sidewall of each compartment 3 is provided with a temperature sensor 12, and the temperature sensor 12 is electrically connected with the control unit, so as to realize the real-time detection of the temperature of each compartment 3.

[0026] The utility model will be further described below in combination with the drawings:

[0027] In use, based on the prior art, the man-machine interface on the control cabinet 2 is clicked through the set permission, the compartment door 4 at the front side of a compartment 3 is opened, the meals made and transferred are placed on the tray 8 in the compartment 3, and then the compartment door 4 is closed, and the consumer waits for taking meals.

[0028] When the pressure exerted by the food acts on the diaphragm of the wireless pressure sensor 11, it will cause a change in its internal resistance or capacitance, that is, it is perceived that there is food on the tray 8, and then it is converted into an electrical signal output, and the data is transmitted remotely to the control unit through the built-in wireless module (such as LoRa, NB-IoT, Zigbee, etc.), and the control unit sends control instructions to the corresponding hot air blower 6 and drive motor 10, and the hot air blower 6 and drive motor 10 start working.

[0029] In this process, the hot air blower 6 supplies heat through the heat supply pipeline 9, and blows hot air into the warehouse 3 through the heat outlet 7, at the same time, the drive motor 10 drives the tray 8 to rotate, and drives the food to rotate, so that each part of the food can alternately and orderly contact heat, and then get uniform heating, which is conducive to better guarantee the freshness of the food, avoid the breeding of bacteria, and can avoid the decline of taste caused by local continuous heating.

[0030] In addition, the temperature sensor 12 detects the temperature data of the warehouse 3 in real time and sends it to the control unit, when the temperature reaches the set threshold, for example, 60℃, the control unit sends control instructions to the corresponding hot air blower 6, and the hot air blower 6 stops working.

[0031] When the food in the warehouse 4 is taken away by the consumer, the wireless pressure sensor 11 will not send an electrical signal to the control unit, at this time, the control unit sends control instructions to the corresponding drive motor 10, and the drive motor 10 stops working, and the tray 8 stops rotating.

[0032] Therefore, automatic control of heat supply and tray 8 rotation can be realized, thereby saving electric energy and avoiding excessive heating to damage the nutritional components in the food, and ensuring the freshness and taste of the food.

[0033] It should be noted that, in order to maximize the heat loss, heat preservation materials can be installed on the inner wall of the cabinet, that is, the inner wall of each warehouse, such as 5cm thick heat preservation cotton on the top back left and right sides of the cabinet, and 1cm thick heat preservation plate on the warehouse door.

[0034] Although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0035] Therefore, the above description is only the preferred embodiment of the present application, and is not intended to limit the scope of the present application; that is, any equivalent transformation made within the scope of the claims of the present application is within the protection scope of the claims of the present application.

Claims

1. A heat preservation structure of an automatic meal vending machine, comprising a meal cabinet and a control cabinet located at one side of the meal cabinet, the interior of the meal cabinet is provided with a plurality of independent compartments for storing meals, the front side of each compartment is open and is provided with a compartment door, characterized in that: The bottom of the dining cabinet is provided with a bottom chamber, and a heat source is installed in the bottom chamber.

2. The heat retaining structure of the automatic meal vending machine according to claim 1, wherein: The control cabinet is internally provided with a control unit.

3. The heat retaining structure of an automatic meal vending machine according to claim 2, wherein: The heat source is a hot air unit, and the outlet end of each hot air unit is connected with a heat supply pipeline leading to the heat outlet in the same row.

4. The heat retaining structure of the automatic meal vending machine according to claim 2, wherein: A driving motor for driving the tray to rotate is installed on the bottom surface of each chamber, and the control unit is electrically connected with the driving motor.

5. The heat retaining structure of an automatic meal vending machine according to claim 2 or 4, wherein: A wireless pressure sensor is embedded on the upper surface of the tray, and the wireless pressure sensor is electrically connected with the control unit.

6. The heat retaining structure of an automatic meal vending machine according to claim 2, wherein: A temperature sensor is installed on the side wall of each chamber, and the temperature sensor is electrically connected with the control unit.

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