Electric heater and control method thereof

Abstract

The invention provides a control method of an electric heater. The control method comprises the following steps: (S1) when the electric heater is started to operate, the environmental temperature is detected in real time; (S2) the electric heater is controlled to operate for first time with predetermined first power until the present environmental temperature reaches a predetermined temperature; (S3) the environmental temperature increasing speed within the first time is obtained; and a predetermined power table is inquired according to the environmental temperature increasing speed to obtain the operating power of the electric heater; (S4) the electric heater is controlled to operate for second time with the operating power; and (S5) the operating power of the electric heater is adjusted according to a variation value of the present environmental temperature within the second time and the predetermined power table; and the steps (S4) and (S5) are repeated. The control method can enable the electric heater to intelligently heat at a constant temperature, so that the continuous closing or opening of an electric switch is prevented, the energy conservation and the environmental protection are achieved, and the comfortable experience of users to the constant-temperature requirement is increased. The invention further provides the electric heater.

Description

Technical field [0001] The invention relates to the technical field of heating equipment, in particular to an electric heater and a control method of the electric heater. Background technique [0002] At present, the existing heating methods of electric heaters are as follows: [0003] The first is individual gear adjustment. Take the maximum power of 2000W as an example. This kind of electric heater is adjustable in three gears of 800W-1200W-2000W. The machine can only work according to the gear set by the user. Without temperature control, there is a problem of insufficient heating or heating waste, and at the same time, it cannot provide intelligent and comfortable heating. [0004] The second type is gear adjustment + temperature adjustment. Taking the maximum power of 2000W as an example, this kind of electric heater is also adjustable in three gears of 800W-1200W-2000W, and the temperature can be adjusted at each gear. For example, if it is set to 24 degrees and 800W, the mac...

AI Technical Summary

Problems solved by technology

like image 3 As shown, this method can better allow the machine to work with low power within the set temperature range, but the disadvantage of this method is: the machine will have a thermal inertia when heating. When the machine is heated to Ta≧Ts, Ta still remains It will rise by a certain value, we assume it is Tx, the value of Tx is related to the environment and the characteristics of the machine itself, so that the machine always works in a temperature range that is Ts-B≦Ta≦Tx, if B is too small, it will cause such image 3 With the shortening of time T1, the electrical switch controlling 800W power, such as a relay, will keep closing the switch, which will affect the life of the electrical switch. At the same time, the sound of the switch closing and disconnecting may also affect the user experience

If the B value is set too large, it will cause a wide range of temperature fluctuations, and it will also affect the user's comfortable experience of constant temperature requirements.

At the same time, the temperature brought by thermal inertia is higher than the set temperature Tx is also a waste of energy (inside the dotted circle), what the user needs is Ts, not Tx, which cannot meet the user's comfort needs

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