A substrate circuit and control method

A control method and circuit technology, applied in the direction of converting irreversible AC power input into DC power output, etc., can solve the problems of electric injury and high voltage of users, and achieve the effect of reducing customer complaints

Active Publication Date: 2020-06-19
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a substrate circuit and a control method, which solves the problem of electric injury to the user due to the large voltage generated by the substrate after the substrate is energized.

Method used

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  • A substrate circuit and control method

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] figure 1 It is a schematic diagram of a substrate circuit provided in the related art, such as figure 1 As shown, the first end and second end of the bridge full-wave rectification circuit composed of diodes D1, D2, D3 and D4 are connected to the AC power supply, the third end is connected to the first end of the primary coil L1, and the fourth end is grounded. and connected to the second end of the primary coil L1; the capacitor C1 is arranged between the ...

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Abstract

The embodiment of the invention discloses a substrate circuit and a control method, which relate to the field of household electrical appliances and solve the problem of electric injury to users due to the large voltage generated by the substrate to the electric box after the substrate is energized. The specific solution is: the substrate circuit is installed in the electrical box, the substrate circuit includes: a power module and a safety module, the first end and the second end of the power module are used to connect to the AC power supply, and the third end is connected to the first end of the safety module , the fourth end is connected to the second end of the safety module, and is used to provide an AC voltage to the safety module; the third end of the safety module is grounded, and the fourth end is connected to the electrical box, and is used to make the output voltage of the fourth end less than the safety voltage. The embodiment of the present invention is used in the normal operation and after-sales of household appliances.

Description

technical field [0001] Embodiments of the present invention relate to the field of household appliances, and in particular to a substrate circuit and a control method. Background technique [0002] At present, household appliances such as multi-connected air conditioners usually include an iron electrical box, and a substrate is installed in the electrical box. When the substrate is powered on, the substrate will generate a voltage of more than 20 volts (V) to the electrical box. Reach above 100V. In this way, when the user performs after-sales installation of the household appliance, the voltage generated by the substrate to the electrical box may cause electric injury to the user. Contents of the invention [0003] The invention provides a substrate circuit and a control method, which solves the problem of causing electric injury to users due to the large voltage generated by the substrate to the electric box after the substrate is energized. [0004] To achieve the ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/06
CPCH02M7/06
Inventor 陶淦李希志赵怀杰吴长征
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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