# US 2025/0146705 A1 · Heat Pump Noise Cancelling Systems and Methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0146705 A1 - Document ID: US20250146705A1 - Status: Published application - Kind: A1 - Application number: 18/933,174 - Filed: 2024-10-31 - Published: 2025-05-08 - Earliest claimed: 2023-11-03 - Assignees: Rheem Manufacturing Company - Applicants: Rheem Manufacturing Company - Inventors: John Paul Leger - Web page: https://patentgrep.com/patent/US20250146705A1 ## CPC - F24H 4/02: Water heaters - F24F 13/24: Means for preventing or suppressing noise - F25B 30/02: of the compression type - F24F 2013/242: {Sound-absorbing material} - F25B 2500/12: Sound - F24H: FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL (steam generation F22) - 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) - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS ## Abstract A heat pump system is disclosed. The heat pump system may include a housing defining an interior chamber of the heat pump system. The heat pump system may further include a heat pump component disposed inside the housing. The heat pump component may generate sound waves during heat pump component operation. The heat pump system may further include a noise cancelling device configured to cover at least one of housing inner walls and the heat pump component. The noise cancelling device may be a panel having a pattern configured to minimize sound wave transmission from the heat pump component. ## Claims ### Claim 1 A heat pump system comprising: a housing defining an interior chamber; a heat pump component disposed inside the housing, wherein the heat pump component generates sound waves during operation of the heat pump component; and a noise cancelling device configured to at least partially cover at least one of: one or more housing inner walls and the heat pump component, wherein the noise cancelling device comprises a panel having a pattern configured to minimize sound wave transmission from the heat pump component. ### Claim 2 (depends on 1) The heat pump system of claim 1, wherein the heat pump component is a compressor. ### Claim 3 (depends on 1) The heat pump system of claim 1, wherein the heat pump component comprises an air mover. ### Claim 4 (depends on 1) The heat pump system of claim 1, wherein the housing comprises a top wall, and wherein the noise cancelling device is configured to cover an interior surface of the top wall. ### Claim 5 (depends on 1) The heat pump system of claim 1, wherein the panel comprises one or more cut-outs to cover a heat pump component portion. ### Claim 6 (depends on 1) The heat pump system of claim 1, wherein the noise cancelling device comprises a plurality of panels that are stacked to cover at least a portion of outer walls of the heat pump component. ### Claim 7 (depends on 1) The heat pump system of claim 1, wherein the panel comprises a plurality of wedge-shaped ridges. ### Claim 8 (depends on 1) The heat pump system of claim 1, wherein the panel comprises a plurality of pyramid-shaped ridges. ### Claim 9 (depends on 1) The heat pump system of claim 1, wherein the panel comprises a plurality of holes. ### Claim 10 (depends on 1) The heat pump system of claim 1, wherein the noise cancelling device is selected based on a frequency response of the heat pump system or the heat pump component. ### Claim 11 A heat pump water heater comprising: a housing defining an interior chamber; a heat pump component disposed inside the housing, wherein the heat pump component generates sound waves during operation of the heat pump component; and a noise cancelling device configured to at least partially cover at least one of: one or more housing inner walls and the heat pump component, wherein the noise cancelling device comprises a panel having a pattern configured to minimize sound wave transmission from the heat pump component, and wherein the pattern comprises a plurality of ridges or holes. ### Claim 12 (depends on 11) The heat pump water heater of claim 11, wherein the heat pump component is a compressor. ### Claim 13 (depends on 11) The heat pump water heater of claim 11, wherein the heat pump component is an air mover. ### Claim 14 (depends on 11) The heat pump water heater of claim 11, wherein the housing comprises a top wall, and wherein the noise cancelling device is configured to cover an interior surface of the top wall. ### Claim 15 (depends on 11) The heat pump water heater of claim 11, wherein the noise cancelling device comprises a plurality of panels that is stacked to cover at least a portion of outer walls of the heat pump component. ### Claim 16 (depends on 11) The heat pump water heater of claim 11, wherein the panel comprises one or more cut-outs to cover a heat pump component portion. ### Claim 17 (depends on 11) The heat pump water heater of claim 11, wherein the plurality of ridges comprises a plurality of wedge-shaped ridges. ### Claim 18 (depends on 11) The heat pump water heater of claim 11, wherein the plurality of ridges comprises a plurality of pyramid-shaped ridges. ### Claim 19 A method to mount a noise cancelling device in a heat pump system, the method comprising: selecting a noise cancelling device from a plurality of noise cancelling devices to minimize sound wave transmission from the heat pump system, wherein the heat pump system comprises: a housing defining an interior chamber of the heat pump system, and a heat pump component disposed inside the housing, wherein the heat pump component generates sound waves during heat pump component operation, wherein the noise cancelling device is configured to cover at least one of: housing inner walls and the heat pump component, and wherein the noise cancelling device is a panel having a pattern; selecting a position to mount the noise cancelling device; and mounting the noise cancelling device in the heat pump system. ### Claim 20 (depends on 19) The method of claim 19, wherein mounting the noise cancelling device in the heat pump system comprises mounting the noise cancelling device via bonding.