US 11,994,328 B2
Electric control assembly and air conditioner
Jianning Yang, Guangdong (CN); Wenkai Zhang, Guangdong (CN); and Wenjie Yi, Guangdong (CN)
Assigned to GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD., Guangdong (CN)
Filed by GD MIDEA AIR-CONDITIONING EQUIPMENT CO., LTD., Guangdong (CN)
Filed on Jul. 16, 2021, as Appl. No. 17/377,647.
Application 17/377,647 is a continuation of application No. PCT/CN2019/088472, filed on May 27, 2019.
Claims priority of application No. 201910051377.2 (CN), filed on Jan. 18, 2019.
Prior Publication US 2021/0341200 A1, Nov. 4, 2021
Int. Cl. H02P 5/74 (2006.01); F25B 49/02 (2006.01); H05K 1/02 (2006.01)
CPC F25B 49/025 (2013.01) [H02P 5/74 (2013.01); F25B 2600/0253 (2013.01); F25B 2600/11 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electric control assembly comprising:
an electric control board provided with at least two reference grounds;
a fan driving circuit and a compressor driving circuit both provided on the electric control board, wherein a ground end of the fan driving circuit and a ground end of the compressor driving circuit are connected with the at least two reference grounds of the electric control board in one-to-one correspondence; and
a switch isolation driving circuit, wherein a first input end of the switch isolation driving circuit is connected with a control end of the compressor driving circuit, and a first output end of the switch isolation driving circuit is connected with a controlled end of the fan driving circuit, a second input end of the switch isolation driving circuit is connected with a control end of the fan driving circuit, a second output end of the switch isolation driving circuit is connected with a feedback end of the compressor driving circuit, the switch isolation driving circuit comprises a first transistor, and a base of the first transistor is connected with the first or second input end of the switch isolation driving circuit;
wherein the fan driving circuit and the compressor driving circuit perform signal interaction through the switch isolation driving circuit.