A control method of a microwave oven

Abstract

The application discloses a control method of a microwave oven, the microwave oven comprising a cavity, an exhaust port being provided on the cavity and being communicated with the outside, at least one gas sensor being arranged at the position of the exhaust port, the control method of the microwave oven comprising the following steps: starting the microwave oven to perform heating work; collecting the gas at the position of the exhaust port; analyzing the collected gas to obtain current gas component information; until the obtained gas component information conforms to the component information of a prewarning gas; comparing the concentration value of the current gas with a preset concentration value, and determining whether the metal sparking phenomenon occurs in the cavity according to the comparison result. The method is simple and feasible, can effectively detect the metal sparking phenomenon of the microwave oven, and thus improves the safety problem of the microwave cooking appliance caused by human negligence in the use process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a control method of a microwave oven. BACKGROUND

[0002] The microwave oven has become an indispensable household appliance in modern kitchens because of its high efficiency and speed in heating food, however, safety accidents occur from time to time when using the microwave oven due to the placement of metal utensils or the aging of the microwave oven itself.

[0003] The working principle of the microwave oven is to generate microwaves by using a microwave generator, to excite water molecules and other polar molecules in food to produce high-frequency collisions and friction, so that the food can be rapidly heated in a short time, but microwaves cannot penetrate metal and will be reflected back, resulting in the occurrence of problems such as metal utensils sparking and ablation, thereby causing damage to the core components of the microwave oven, and in severe cases, causing a fire.

[0004] In the prior art, most microwave ovens do not have a metal utensil detection function, on the one hand, the metal detection device is costly, and on the other hand, the detection device needs to be placed in the cavity and will be disturbed by microwaves, making it difficult for the device to function normally. SUMMARY

[0005] The present application aims to at least solve one of the problems existing in the prior art, for this purpose, the present application proposes a control method of a microwave oven, which is simple and feasible, and can effectively detect the metal sparking phenomenon of the microwave oven, thereby improving the safety problems caused by human negligence during the use of the microwave cooking appliance.

[0006] The above-mentioned object is achieved by the following technical solutions:

[0007] A control method of a microwave oven, the microwave oven comprising a cavity, an exhaust port being provided on the cavity and being in communication with the outside, at least one gas sensor being provided at the position of the exhaust port, the control method of the microwave oven comprising the following steps:

[0008] Starting the microwave oven to work;

[0009] Collecting the gas at the position of the exhaust port;

[0010] Analyzing the collected gas to obtain the current gas composition information;

[0011] Until the obtained gas composition information meets the composition information of the early warning gas;

[0012] Comparing the concentration value of the current gas with a preset concentration value, and determining whether the metal sparking phenomenon occurs in the cavity according to the comparison result.

[0013] In some embodiments, the step of detecting the gas at the exhaust port position until the acquired gas composition information meets the condition of the pre-warning gas comprises:

[0014] determining whether the acquired current gas composition information meets the composition information of the pre-warning gas;

[0015] if yes, comparing the concentration value of the current gas with a preset concentration value;

[0016] if no, continuing to detect the gas at the exhaust port position.

[0017] In some embodiments, the step of comparing the concentration value of the current gas with a preset concentration value, and determining whether the metal sparking phenomenon occurs in the cavity according to the comparison result comprises:

[0018] determining whether the concentration value of the current gas exceeds the preset concentration value;

[0019] if yes, determining that the metal sparking phenomenon occurs in the cavity;

[0020] if no, determining that the metal sparking phenomenon does not occur in the cavity.

[0021] In some embodiments, the step after determining that the metal sparking phenomenon occurs in the cavity comprises:

[0022] controlling the microwave generator of the microwave oven to stop working.

[0023] In some embodiments, the step after controlling the microwave generator of the microwave oven to stop working comprises:

[0024] controlling the microwave oven to send an alarm signal.

[0025] In some embodiments, the metal sparking phenomenon is generated in the microwave oven in advance, and the generated gas is collected to acquire the composition information of the pre-warning gas.

[0026] In some embodiments, the number of the gas sensors is three, the first gas sensor is adapted to collect ozone, the second gas sensor is adapted to collect zinc oxide, and the third gas sensor is adapted to collect sulfur dioxide.

[0027] In some embodiments, a buzzer is further included, and the buzzer is arranged at an external position of the cavity to send an alarm signal outward.

[0028] In some embodiments, a display is further included, and the display is arranged at an external position of the cavity to send an alarm signal outward.

[0029] Compared with the prior art, the present application at least includes the following beneficial effects:

[0030] 1、The control method of the microwave oven is simple and feasible, and can effectively detect the metal sparking phenomenon of the microwave oven, thereby improving the safety problem caused by human negligence during use of the microwave cooking appliance. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0032] Figure 1 is a flowchart of the microwave oven control method in the embodiments of the present application. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the present application clearer, the following will combine the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the technical solutions claimed by the present application.

[0035] Embodiment:

[0036] As Figure 1As shown, the embodiment provides a control method of a microwave oven. The microwave oven defines a cavity. A microwave generator is arranged in the cavity. An exhaust port is arranged on the cavity to communicate with the outside to exhaust gas in the cavity. At least one gas sensor is arranged at the exhaust port. During operation of the microwave generator, the gas in the cavity is exhausted through the exhaust port, so that the gas sensor monitors the gas flowing through the exhaust port until the current acquired gas composition information matches the composition information of the warning gas and the current gas concentration value exceeds the preset concentration value, so as to determine that the metal sparking phenomenon occurs in the cavity. The method is simple and feasible, and can effectively detect the metal sparking phenomenon of the microwave oven, thereby improving the safety problem caused by human negligence during use of the microwave cooking appliance.

[0037] Specifically, the embodiment further comprises a buzzer arranged at an external position of the cavity to emit an alarm signal to the outside.

[0038] Preferably, the embodiment further comprises a display arranged at an external position of the cavity to emit an alarm signal to the outside.

[0039] In the embodiment, the buzzer and / or the display are arranged at an external position of the cavity of the microwave oven. After determining that the metal sparking phenomenon occurs in the cavity, the controller of the microwave oven emits a sound alarm to the outside through the buzzer and / or displays the alarm signal on the display, so that the operator quickly obtains whether the metal sparking phenomenon occurs in the cavity.

[0040] The control method of the microwave oven in the embodiment comprises the following steps:

[0041] Step S101: starting the microwave oven to perform heating work.

[0042] Step S102: collecting gas at the position of the exhaust port.

[0043] In the embodiment, the operator places food to be heated and cooked in the microwave oven, and then starts the microwave oven to perform heating work. Then, the gas sensor is started to collect gas at the position of the exhaust port, so as to collect one kind of gas or multiple kinds of gas.

[0044] Step S103: analyzing the collected gas to obtain current gas composition information.

[0045] In the embodiment, the gas sensor feeds back the acquired gas data to the controller of the microwave oven. The controller of the microwave oven analyzes the collected gas to obtain current gas composition information and gas concentration information.

[0046] More preferably, since the placement of the baking tray, grill, metal utensils and the aging of the cavity itself can all cause the metal sparking phenomenon in the cavity of the microwave oven, and the metal sparking phenomenon in the cavity of the microwave oven can produce various gases, that is, ozone gas is produced in the metal ion sparking process, and zinc oxide, sulfur dioxide and other gases are produced in the metal ablation process, therefore, three gas sensors can be respectively arranged at the position of the exhaust port, wherein the first gas sensor is suitable for collecting ozone, the second gas sensor is suitable for collecting zinc oxide, and the third gas sensor is suitable for collecting sulfur dioxide, so that the current gas component information can be quickly obtained, and the accuracy of gas collection can be effectively improved. In addition, the number of gas sensors is not limited to three, and the appropriate number can be selected according to actual needs.

[0047] Step S104, until the obtained gas component information meets the component information of the warning gas.

[0048] More preferably, the step of until the obtained gas component information meets the condition of the warning gas comprises:

[0049] determining whether the obtained current gas component information meets the component information of the warning gas;

[0050] If yes, compare the concentration value of the current gas with the preset concentration value;

[0051] If no, continue to detect the gas at the position of the exhaust port.

[0052] In the embodiment, the metal sparking phenomenon is generated in the microwave oven in advance, and the generated gas is collected to obtain the component information of the warning gas, and the warning gas in the embodiment is the gas generated when the metal sparking phenomenon occurs in the cavity of the microwave oven. Specifically, when the metal sparking phenomenon occurs in the cavity of the microwave oven, various gases are produced, that is, ozone gas is produced in the metal ion sparking process, and zinc oxide, sulfur dioxide and other gases are produced in the metal ablation process, so that the warning gas in the embodiment is preferably ozone gas, zinc oxide gas and sulfur dioxide gas, and then it is determined whether the current gas component information meets the component information of the warning gas by judging whether the current gas component information is any one of ozone gas, zinc oxide gas and sulfur dioxide gas or multiple gases.

[0053] Step S105, compare the concentration value of the current gas with the preset concentration value, and determine whether the metal sparking phenomenon occurs in the cavity according to the comparison result.

[0054] More preferably, the step of comparing the concentration value of the current gas with the preset concentration value and determining whether the metal sparking phenomenon occurs in the cavity according to the comparison result comprises:

[0055] determining whether the concentration value of the current gas exceeds a preset concentration value;

[0056] if yes, it is determined that the metal sparking phenomenon occurs in the cavity;

[0057] if no, it is determined that the metal sparking phenomenon does not occur in the cavity.

[0058] Further, the step of determining that the metal sparking phenomenon occurs in the cavity comprises:

[0059] controlling the microwave generator of the microwave oven to stop working;

[0060] controlling the microwave oven to send an alarm signal.

[0061] In the embodiment, until the acquired gas composition information matches the composition information of the warning gas, it is determined whether the concentration value of the current gas exceeds a preset concentration value;

[0062] if yes, it is determined that the metal sparking phenomenon occurs in the cavity;

[0063] if no, it is determined that the metal sparking phenomenon does not occur in the cavity.

[0064] In the embodiment, the metal sparking phenomenon is generated in the microwave oven in advance, the generated gas is collected, and thus the composition information of the warning gas is acquired. Meanwhile, the gas concentration when the metal sparking phenomenon occurs is collected, and then the gas concentration value is calibrated, so that the accuracy of the gas detection is ensured by setting the preset gas concentration signal value, that is, the accuracy of the gas detection is ensured by setting the preset concentration value.

[0065] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A control method of a microwave oven, characterized by, The microwave oven comprises a cavity, an exhaust port is formed on the cavity and communicates with the outside, at least one gas sensor is arranged at the position of the exhaust port, and the control method of the microwave oven comprises the following steps: starting the microwave oven to work; collecting the gas at the position of the exhaust port; analyzing the collected gas to obtain current gas composition information; comparing the concentration value of the current gas with a preset concentration value, and determining whether the metal sparking phenomenon occurs in the cavity according to the comparison result. The step of until the obtained gas composition information meets the condition of the warning gas comprises:

2. The control method of a microwave oven according to claim 1, characterized by, determining whether the obtained current gas composition information meets the composition information of the warning gas; if yes, comparing the concentration value of the current gas with a preset concentration value; if no, continuing to detect the gas at the position of the exhaust port. The step of comparing the concentration value of the current gas with a preset concentration value, and determining whether the metal sparking phenomenon occurs in the cavity according to the comparison result comprises:

3. The control method of a microwave oven according to claim 1, characterized by, determining whether the concentration value of the current gas exceeds the preset concentration value; if yes, determining that the metal sparking phenomenon occurs in the cavity; if no, determining that the metal sparking phenomenon does not occur in the cavity. The step of determining that the metal sparking phenomenon occurs in the cavity comprises:

4. The control method of a microwave oven according to claim 3, characterized by, controlling the microwave generator of the microwave oven to stop working. The step of controlling the microwave generator of the microwave oven to stop working comprises:

5. The control method of a microwave oven according to claim 4, wherein controlling the microwave oven to send an alarm signal. The metal sparking phenomenon is generated in the microwave oven in advance, the generated gas is collected, and thus the composition information of the warning gas is obtained.

6. The control method of a microwave oven according to claim 1, characterized by, The number of the gas sensors is three, the first gas sensor is adapted to collect ozone, the second gas sensor is adapted to collect zinc oxide, and the third gas sensor is adapted to collect sulfur dioxide.

7. The control method of a microwave oven according to claim 1, characterized by, A buzzer is further arranged at the position outside the cavity to send an alarm signal outward.

8. The control method of a microwave oven according to claim 1, characterized by, A display is further arranged at the position outside the cavity to send an alarm signal outward.

9. The control method of a microwave oven according to claim 1, characterized by, ​

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