In the understanding of the brushless dc motor cooling way in the south of anhui code before, we first introduce some basic concepts: 1)Cooling: brushless dc motor in the energy conversion, there is always a small part of the loss into heat, it must pass the brushless dc motor shell and the surrounding medium heat out ceaselessly, the heat of the process, we are called to cool. 2)Cooling medium, heat transfer of gas or liquid medium. 3): primary cooling medium temperature is lower than a portion of the brushless dc motor of the gas or liquid medium, it is the part in contact with brushless dc motor, and gives off heat away. 4): secondary cooling medium temperature is lower than the primary cooling medium of gas or liquid medium, through the outer surface of the brushless dc motor or cooler will be released by the primary coolant heat away. 5)Final cooling medium: heat transfer at the end of the cooling medium. 6)Around the cooling medium: brushless dc motor surrounding gas or liquid medium. 7)Distant medium: a far away from the medium of brushless dc motor, through the inlet and outlet pipe or channel inhalation of brushless dc motor from heat and cooling medium to the distance. 8)Cooler: make a cooling medium heat transfer to another kind of cooling medium, and keep the two separate device cooling medium. 1 how to understand the brushless dc motor cooling way in the south of anhui code? The national standard 'rotating brushless dc motor cooling method' (GB / T1993 -1993). Specifies the ranking of terms related to rotating brushless dc motor cooling, code and related content. The cooling system of the brushless dc motor in the south of anhui by the six parts, but the order and its ways and symbol meanings are shown in table 1, the common small and medium-sized brushless dc motor without secondary cooling medium in the south of anhui, so only the first 4 parts. The first part (IC)Is & other; International & throughout; And & otherCooling & throughout; English, namely, international, and cooling method of the first letters I and C. If the cooling medium is air,With the letter A)Code, the medium (一)Can be omitted. Omit some code after the tag should be priority in use simplified marks. 2 the brushless dc motor used in the south of anhui in ambient air by way of cooling and water cooling of the small and medium-sized cooling method for brushless dc motor as shown in the figure below: for example: IC411 complete notation for IC4A1A1 & other; IC”As the cooling way mark symbol; “4'As the cooling medium loop layout code (The casing surface cooling)“A '’Code for the cooling medium (Air)The first & other; 1'Method for primary cooling medium to promote code (Since the loop)The second & other; 1'For the secondary cooling medium to promote method code (Since the loop)
