Small-sized automatic vending machine

Abstract

The invention relates to a mini size automatic vending machine which is arranged in an office or a canteen; particularly, the slot device used in the mini size automatic vending machine for supplying coffee and the beverage is improved in the mini size automatic vending machine of the invention; the invention provides a low-price mini size automatic vending machine with low price and the improved structure; besides, an electronic temperature sensor is arranged in the heating box to measure the temperature accurately, so as to control the interior temperature of the heating box properly; furthermore, spherical check valves are respectively arranged on the water supply pipe which connects the water tank with the heating device, and the pipeline which connects the heating box and the water tank; the spherical check valves can prevent the hot water in the heating box from flowing back to mix with the cool water in the water tank and provide a structure of improving the temperature of the hot water in the heating box; meanwhile, the vapor generated in the heating box can be exhausted to solve the problem of low discharge speed of the hot water when the hot water valve is opened; besides, the stirrer and the impeller are improved to prevent the splashing situation; the dilution operation becomes easy; the tastes of the coffee and the domestic tea are improved.

Description

technical field [0001] The present invention relates to a small automatic vending machine installed in offices, canteens and other places, more specifically, the small automatic vending machine related to the present invention improves a coin-operated device for automatically supplying beverages such as coffee, and provides low price and improved structure. small vending machine. Moreover, an electronic temperature sensor is installed inside the heating box, which can accurately measure the temperature, so as to properly control the temperature inside the heating box. In addition, ball check valves are installed on the water supply pipe connecting the water bucket and the heater and the pipe connecting the heating box and the water bucket, which can prevent the hot water in the heating box from being mixed with the cold water in the bucket due to reverse flow, and provide improved heating in the heating box. Moreover, the steam generated in the heating box can be discharged, ...

AI Technical Summary

Problems solved by technology

[0019] In addition, the heating box 60 of the small automatic vending machine 10 is equipped with a bimetallic temperature sensor on its outside, and the surface temperature of the heating box 60 is measured by the sensor, so the temperature change cannot be read immediately, and the water temperature inside the heating box cannot be accurately measured. Variations, so that the proper temperature of the hot water used in mixing beverages cannot be guaranteed, and slight temperature differences can affect the taste of beverages

[0020] In addition, when the temperature of the water bucket 89 in the small vending machine 10 exceeds 30°C to 40°C, the temperature of the water in the pure water bucket 87 will change, causing the water to expand and the air to expand, making it impossible to supply a certain amount of coffee or domestic tea. and because of the difference in temperature of the hot water, the taste of the coffee or domestic tea that the user drinks is different, which causes dissatisfaction of the user

[0021] In addition, after the small automatic vending machine 10 has been used for a long time, when the hot water ...

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