# US 10,119,710 B2 · Heat exchange system using an external rotor motor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,710 B2 - Document ID: US10119710B2 - Status: Granted - Kind: B2 - Application number: 14/967,404 - Filed: 2015-12-14 - Published: 2016-04-07 - Granted: 2018-11-06 - Earliest claimed: 2009-09-30 - Assignees: Zhongshan Broad-Ocean Motor Co., Ltd. - Applicants: Zhongshan Broad-Ocean Motor Co., Ltd. - Inventors: Xiongcheng Wang - Web page: https://patentgrep.com/patent/US10119710B2 ## CPC - F24F 1/14: Heat exchangers specially adapted for separate outdoor units - F04D 25/0613: {the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator} - F04D 29/668: {damping or preventing mechanical vibrations} - F24F 1/16: Arrangement or mounting thereof - F24F 1/38: Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings - F24F 1/50: with outlet air in upward direction - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) ## Abstract A heat exchange system of the invention includes at least multiple grids, a blower including an external rotor motor and a wind blade, an inner side wall, a shock absorbing pad, a compressor, and a box having multiple exhaust inlets. The exhaust inlets are disposed on the side of the box. The grids are disposed at an exhaust outlet of the box. The blower is disposed in the box and below the grid. The compressor is disposed on a bottom surface in the box. The blower is an external rotor axial fan, and the wind blade is disposed outside a rotor of the external rotor motor. The shock absorbing pad is disposed between the grids and the external rotor motor. ## Claims ### Claim 1 A heat exchange system, comprising: multiple grids; a blower; said blower comprising an external rotor motor and a wind blade, said external rotor motor comprising an axis and a rotor, said wind blade comprising an outer surface, a top end, and a side end; an inner side wall; a shock absorbing pad; a compressor; and a box; said box comprising a side, a bottom surface, an exhaust outlet, and multiple exhaust inlets; wherein: said exhaust inlets are disposed on said side of said box; said multiple grids are disposed at said exhaust outlet of said box; said blower is disposed in said box and below said multiple grids; said compressor is disposed on said bottom surface of said box; said shock absorbing pad is disposed between said multiple grids and said external rotor motor; said blower is an external rotor axial fan; said wind blade is disposed outside said rotor of said external rotor motor; said shock absorbing pad is in the shape of a circular ring and comprises a plurality of holes; a groove is disposed on an inner wall of each of said plurality of holes for receiving wires; and a plurality of screws are respectively disposed in said plurality of holes for connecting said shock absorbing pad, said external rotor motor, and said multiple grids to one another; and a distance between a center of said shock absorbing pad and each of said plurality of screws is smaller than an external radius of said rotor of said external rotor motor. ### Claim 2 (depends on 1) The heat exchange system of claim 1, wherein a number of said plurality of holes is four; and a number of said plurality of screws is four. ### Claim 3 (depends on 1) The heat exchange system of claim 1, wherein said outer surface and said axis of said external rotor motor form an oblique angle. ### Claim 4 (depends on 1) The heat exchange system of claim 1, wherein an air collecting ring is disposed between said wind blade and said inner side wall and encloses said wind blade; and substantially one third of said wind blade along said axis of said external rotor motor is disposed inside said air collecting ring. ### Claim 5 (depends on 1) The heat exchange system of claim 1, wherein said side end of said wind blade is spaced from an air collecting ring by 8-15 mm. ### Claim 6 (depends on 1) The heat exchange system of claim 1, wherein said top end of said wind blade is spaced from said multiple grids by 80-140 mm. ### Claim 7 (depends on 6) The heat exchange system of claim 6, wherein said top end of said wind blade is spaced from said multiple grids by 110 mm. ### Claim 8 (depends on 1) The heat exchange system of claim 1, wherein said wind blade is disposed outside said rotor of said external rotor motor via a support; said support comprises an annular cylinder, and multiple mounting feet extending from said annular cylinder; said wind blade is disposed on a mounting foot of the multiple mounting feet; and said annular cylinder is fit on said rotor of said external rotor motor. ### Claim 9 (depends on 8) The heat exchange system of claim 8, wherein said wind blade is an equal-width blade and in the vicinity of said exhaust outlet of said box. ### Claim 10 (depends on 8) The heat exchange system of claim 8, wherein said annular cylinder is an integral formed cylinder, or a cylinder formed via an annular body with an opening. ### Claim 11 (depends on 8) The heat exchange system of claim 8, wherein an inner wall of said annular cylinder is interference fit with an outer wall of said rotor. ### Claim 12 (depends on 8) The heat exchange system of claim 8, wherein a screw hole is disposed on said mounting foot; and said wind blade is disposed on said mounting foot via a bolt and a nut. ### Claim 13 (depends on 12) The heat exchange system of claim 12, wherein said bolt comprises an axis, and said axis of said bolt and said axis of said external rotor motor form an angle of substantially 45°. ### Claim 14 (depends on 8) The heat exchange system of claim 8, wherein a through hole is disposed on said mounting foot; and said wind blade is connected to said mounting foot via a rivet. ### Claim 15 (depends on 8) The heat exchange system of claim 8, wherein said wind blade is directly welded on said mounting foot, or directly welded on an outer wall of said rotor of said external rotor motor. ### Claim 16 (depends on 8) The heat exchange system of claim 8, wherein said wind blade is disposed on said mounting foot via buckling. ### Claim 17 (depends on 8) The heat exchange system of claim 8, wherein said annular cylinder and said mounting foot are integrally formed, or connected to each other as two independent parts via welding, buckling, or riveting.