# US 2013/0152302 A1 · Domestic appliance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0152302 A1 - Document ID: US20130152302A1 - Status: Published application - Kind: A1 - Application number: 13/711,182 - Filed: 2012-12-11 - Published: 2013-06-20 - Earliest claimed: 2011-12-12 - Assignees: Dyson Technology Limited - Inventors: Andre David BROWN; Stephen Benjamin COURTNEY - Web page: https://patentgrep.com/patent/US20130152302A1 ## CPC - E03C 1/182: connected to the waste-pipe - E03C 1/18: Sinks, whether or not connected to the waste-pipe - F24D 17/0052: {recuperated waste heat and conventional heating means} - F28D 21/0012: {the heat being recuperated from waste water or from condensates} - E03C 2001/005: {Installations allowing recovery of heat from waste water for warming up fresh water} - F28D 3/00: Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits (F28D5/00 takes precedence) - Y02B 10/70: Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies - Y02B 30/18: Domestic hot-water supply systems using recuperated or waste heat - Y02B 30/56: Heat recovery units - E03C: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS - F24D: DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR (using steam or condensate extracted or exhausted from steam engine plants for heating purposes F01K17/02) - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract A receptacle of a hand washing station includes a heat exchanger having an external surface for thermally contacting a relatively hot fluid and an internal surface for thermally contacting a relatively cold fluid. The external surface of the heat exchanger forms at least part of the external surface of the receptacle. ## Claims ### Claim 1 A hand washing station comprising a receptacle having a drain, the receptacle comprising a heat exchanger having an external surface for thermally contacting a fluid at a first temperature and an internal surface for thermally contacting a fluid at a second temperature, the external surface of the heat exchanger forming at least part of the external surface of the receptacle. ### Claim 2 (depends on 1) The hand washing station as claimed in claim 1, wherein the external surface of the heat exchanger forms at least part of a convex external surface of the receptacle. ### Claim 3 (depends on 1) The hand washing station as claimed in claim 1, wherein the external surface of the heat exchanger forms at least part of an external surface of the receptacle which has a substantially spherical curvature. ### Claim 4 (depends on 1) The hand washing station as claimed in claim 1, wherein the heat exchanger forms at least part of an external side wall of the receptacle. ### Claim 5 (depends on 1) The hand washing station as claimed in claim 1, wherein the heat exchanger forms at least part of an external base of the receptacle. ### Claim 6 (depends on 5) The hand washing station as claimed in claim 5, wherein the heat exchanger forms part of a raised section of the base. ### Claim 7 (depends on 6) The hand washing station as claimed in claim 6, wherein the raised section of the base is convex in shape. ### Claim 8 (depends on 6, 7) The hand washing station as claimed in claim 6 or claim 7, wherein the raised section has a substantially spherical curvature. ### Claim 9 (depends on 1) The hand washing station as claimed in claim 1, wherein the receptacle comprises a fluid conveying system arranged to convey a flow of fluid adjacent to the internal surface of the heat exchanger. ### Claim 10 (depends on 9) The hand washing station as claimed in claim 9, wherein the fluid conveying system is disposed internally opposite said at least part of the external surface of the receptacle. ### Claim 11 (depends on 9, 10) The hand washing station as claimed in claim 9 or claim 10, wherein the fluid conveying system comprises a jacket delimited at least in part by the internal surface of the heat exchanger. ### Claim 12 (depends on 11) The hand washing station as claimed in claim 11, wherein the jacket comprises at least one fluid inlet port. ### Claim 13 (depends on 11) The hand washing station as claimed in claim 11, wherein the jacket comprises a fluid outlet port. ### Claim 14 (depends on 13) The hand washing station as claimed in claim 13, wherein the jacket has a domed section, and the fluid outlet port is located at an apex of the domed section of the jacket. ### Claim 15 (depends on 9) The hand washing station as claimed in claim 9, comprising an outlet conduit for receiving fluid from the fluid conveying system. ### Claim 16 (depends on 15) The hand washing station as claimed in claim 15, comprising a heater for heating fluid located within the outlet conduit.