Control circuit of oven

Abstract

The invention discloses a control circuit of an oven, which comprises a main control circuit, a power supply circuit, a signal input circuit, a temperature detection circuit, a display output circuit and a control output circuit, and is characterized by also comprising a function setting circuit and a temperature setting circuit, wherein the input end of the function setting circuit is connected with a mechanically adjusted function switch through a signal wire; and the input end of the temperature setting circuit is connected with a mechanically adjusted temperature switch through the signal wire. Compared with the prior art, the control circuit of the oven has the advantages that: the function switch and the temperature switch adopting mechanical operation modes are connected with a display circuit of a touch panel through the function setting circuit and the temperature setting circuit respectively, so the function options of the function switch and the temperature setting value of the temperature switch can be directly displayed on a liquid crystal display screen, the trouble of printing icons on the panel of the oven is eliminated, the operation handfeel of a mechanical switch is retained, the human-computer interaction is realized through the liquid crystal screen of the touch panel, and the product is more humanized.

Description

technical field [0001] The invention relates to an oven, in particular to a control circuit for the oven. Background technique [0002] The electric oven is an electric heating appliance that uses the radiant heat emitted by the electric heating element to bake food. Baking bread and pastries etc. [0003] A traditional electric oven generally has three control units: a temperature control part, a function control part and a timing control part. These three control units are individually operated and controlled by mechanical switches, and, in order to display the current working status of the oven, in There are also marks around the operation switch that show the current working status of the operation unit. These marks are mostly designed with panel silk screen printing, but the content of the mark displayed in this panel silk screen design is limited, and interactive operation cannot be realized. For example, the patent No. ZL96219222.8 Chinese utility model patent "Stea...

AI Technical Summary

Problems solved by technology

However, this patent uses an integral touch control panel, and many Europeans and Americans still like the operation feel of mechanical switches when operating the oven, and the oven still retains mechanical switches such as temperature and function selection. Most of the ovens use some touch functions, such as the start / stop button and the timing button, which use interactive touch keys, and can display the current working status on the LCD screen of the touch panel, while the mechanical switches used for temperature or function selection The operation function is still displayed by screen printing on the panel, which cannot be displayed directly on the LCD screen. It requires the user to observe from the installation panel of the mechanical switch, which is prone to errors and inconvenient for the user to operate; in addition, the current oven has heating problems during work. The problem of uniformity makes the food after grilling or heating uneven, which affects the taste. Moreover, the change of ambient temperature will also affect the heating temperature of the oven, which will reduce the accuracy of oven temperature control and affect the normal use of the oven.

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