# US 2023/0054677 A1 · Air conditioning unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0054677 A1 - Document ID: US20230054677A1 - Status: Published application - Kind: A1 - Application number: 17/885,576 - Filed: 2022-08-11 - Published: 2023-02-23 - Earliest claimed: 2021-08-11 - Assignees: Houghton Leisure Products Pty Ltd - Applicants: Houghton Leisure Products Pty Ltd - Inventors: Andrew Robert KARAS - Web page: https://patentgrep.com/patent/US20230054677A1 ## CPC - B60H 1/00364: {for caravans or trailers} - F24F 13/24: Means for preventing or suppressing noise - B60H 1/00021: {Air flow details of HVAC devices} - B60H 1/00471: {The ventilator being of the radial type, i.e. with radial expulsion of the air} - B60H 1/245: {located in the roof} - B60H 1/3202: {using evaporation, i.e. not including a compressor, e.g. involving fuel or water evaporation} - F24F 1/022: comprising a compressor cycle - F24F 1/029: characterised by the layout or mutual arrangement of components, e.g. of compressors or fans - B60H 2001/00235: {Devices in the roof area of the passenger compartment} - Y02B 30/54: Free-cooling systems - B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES - 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) - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract An air conditioning unit includes a conditioning chamber, a fan with a fan air input and a fan air output, and an evaporative unit. The fan and the evaporative unit are arranged in the conditioning chamber. The fan draws in entry air to enter the air conditioning unit, then through the evaporative unit, to condition the entry air to produce conditioned air. Within the conditioning chamber, the fan is positioned and configured such that at least 30% of an area of the fan air output are positioned above an average top surface of the evaporative unit, and that air from the at least 30% of the area of the fan air output is directed towards a wall of the conditioning chamber prior to being redirected downwards and through the evaporative unit. ## Claims ### Claim 1 An air conditioning unit, comprising: a conditioning chamber; a fan, with a fan air input and a fan air output; and an evaporative unit; wherein, the fan and the evaporative unit are arranged in the conditioning chamber; wherein, the fan draws in entry air to enter the air conditioning unit, then through the evaporative unit, to condition the entry air to produce conditioned air; and wherein, within the conditioning chamber, the fan is positioned and configured such that at least 30% of an area of the fan air output are positioned above an average top surface of the evaporative unit, and that air from the at least 30% of the area of the fan air output is directed towards a wall of the conditioning chamber prior to being redirected downwards and through the evaporative unit. ### Claim 2 (depends on 1) The air conditioning unit of claim 1, wherein an average base of the fan is higher than half of an average height of the evaporative unit. ### Claim 3 (depends on 1) The air conditioning unit of claim 1, further comprising an air tunnel and a plenum; wherein the air tunnel connects the fan air input to the plenum; the plenum comprises a plenum air input and a plenum air output; wherein the entry air goes through the plenum air input to the fan; and wherein the conditioned air goes through the plenum air output as an output of the air conditioning unit. ### Claim 4 (depends on 3) The air conditioning unit of claim 3, wherein a space is provided between the air tunnel and the evaporative unit to decrease noise produced by flows of the conditioned air from the evaporative unit towards the plenum air output. ### Claim 5 (depends on 4) The air conditioning unit of claim 4, wherein a thickness of the plenum is reduced to less than 3 cm thick without increasing an overall noise of the air conditioning unit. ### Claim 6 (depends on 1) The air conditioning unit of claim 1, wherein the evaporative unit is fitted with evaporative coils surrounding at least 75% the fan when viewed from a top of the air conditioning unit. ### Claim 7 (depends on 1) The air conditioning unit of claim 1, wherein the evaporative unit comprises two separated sets of coils. ### Claim 8 (depends on 7) The air conditioning unit of claim 7, wherein the two separated sets of coils are opposing each other with the fan in between, when viewed from a top of the air conditioning unit. ### Claim 9 (depends on 1) The air conditioning unit of claim 1, wherein the fan is a centrifugal fan, and a top of the centrifugal fan touches a top inner surface of the conditioning chamber. ### Claim 10 (depends on 1) The air conditioning unit of claim 1, wherein the fan is an axial fan, and a space is provided between a top of the axial fan and a top inner surface of the conditioning chamber. ### Claim 11 (depends on 1) The air conditioning unit of claim 1, wherein the evaporative unit comprises a coil of five or more rows to reduce condensate generation when a relative humidity of the entry air drops below 50%. ### Claim 12 An air conditioning unit of a vehicle, comprising: a conditioning chamber mounted on top of a ceiling the vehicle; a fan, with a fan air input and a fan air output; an evaporative unit; an air tunnel; and a plenum mounted at a bottom of the ceiling; wherein, the fan and the evaporative unit are arranged in the conditioning chamber; wherein, the fan draws in entry air to enter the air conditioning unit, then through the evaporative unit, to condition the entry air to produce conditioned air; wherein, within the conditioning chamber, the fan is positioned and configured such that at least 30% of an area of the fan air output are positioned above an average top surface of the evaporative unit, and that air from the at least 30% of the area of the fan air output is directed towards a wall of the conditioning chamber prior to redirected downwards and through the evaporative unit; and wherein the air tunnel connects the fan air input to the plenum; the plenum comprises a plenum air input and a plenum air output; wherein the entry air goes through the plenum air input to the fan, and the conditioned air goes through the plenum air output as an output of the air conditioning unit. ### Claim 13 (depends on 12) The air conditioning unit of claim 12, wherein the fan is a centrifugal fan, and a top of the centrifugal fan touches a top inner surface of the conditioning chamber. ### Claim 14 (depends on 12) The air conditioning unit of claim 12, wherein the fan is an axial fan, and a space is provided between a top of the axial fan and a top inner surface of the conditioning chamber. ### Claim 15 (depends on 12) The air conditioning unit of claim 12, wherein the evaporative unit comprises coils with five or more rows to reduce condensate generation when a relative humidity of the entry air drops below 50%.