# US 10,502,464 B2 · Apparatus for removing residual water in hot water mat using circulating pump > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,464 B2 - Document ID: US10502464B2 - Status: Granted - Kind: B2 - Application number: 15/601,456 - Filed: 2017-05-22 - Published: 2017-11-23 - Granted: 2019-12-10 - Earliest claimed: 2016-05-23 - Assignees: Kyungdong Navien Co., Ltd. - Applicants: Kyungdong Navien Co., Ltd. - Inventors: Tae Won Yun; Hyung Geol Im; Yong Seok Lee - Web page: https://patentgrep.com/patent/US10502464B2 ## CPC - F25B 30/04: of the sorption type - A61F 7/08: Warming pads, pans or mats; Hot-water bottles - A61M 1/85: {with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants (for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208)} - F24D 3/082: {Hot water storage tanks specially adapted therefor} - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - 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) ## Abstract Provided is an apparatus for removing residual water in a hot water mat using a circulating pump, in which residual water that remains in a boiler and a mat of the hot water mat and a mat can be conveniently and rapidly removed, the configuration of the apparatus for removing residual water in the hot water mat can be simplified and the leakage at a connector of the boiler and the mat is prevented from occurring so that the risk of suffering a low-temperature burn can be eliminated during the removal of residual water. The apparatus for removing residual water in a hot water mat, the hot water mat including a boiler (100) for supplying hot water by heating water and a mat (200) in which heating is performed by using hot water heated by the boiler (100) as a heat source, includes: a circulating pump (120) provided in the boiler (100) and configured to pump water to be circulated between the boiler (100) and the mat (200); a boiler connector (140) including a boiler-side discharge connector (141) and boiler-side water return connectors (142, 143), which are connected to the boiler (100); a mat connector (220) including a mat-side discharge connector (221) and mat-side water return connectors (222, 223), which are connected to the mat (200); and a residual water removing connector (300) coupled between the boiler connector (140) and the mat connector (220) and including a residual water outlet (340) through which water flowing through the boiler-side discharge connector (141) is discharged. ## Claims ### Claim 1 An apparatus for removing residual water in a hot water mat, the hot water mat including a boiler (100) configured to supply hot water by heating water and a mat (200) in which heating is performed by using hot water heated by the boiler (100) as a heat source, the apparatus comprising: a circulating pump (120) provided in the boiler (100) and configured to pump water to be circulated between the boiler (100) and the mat (200); a boiler connector (140) including a boiler-side discharge connector (141) and boiler-side water return connectors (142, 143), which are connected to the boiler (100); a mat connector (220) including a mat-side discharge connector (221) and mat-side water return connectors (222, 223), which are connected to the mat (200); and a residual water removing connector (300) coupled between the boiler connector (140) and the mat connector (220) and including a residual water outlet (340) through which water flowing through the boiler-side discharge connector (141) is discharged through an operation of the circulating pump (120). ### Claim 2 (depends on 1) The apparatus of claim 1, wherein an air inlet (350) is formed in the residual water removing connector (300) and communicates with the mat-side discharge connector (221). ### Claim 3 (depends on 2) The apparatus of claim 2, wherein the residual water removing connector (300) comprises: a discharge and air inlet (310) connected between the boiler-side discharge connector (141) and the mat-side discharge connector (221) and having the residual water outlet (340) and the air inlet (350) disposed therein; and return portions (320, 330) connected between the boiler-side water return connectors (142, 143) and the mat-side water return connectors (222, 223) and configured to provide a flow path for water returning to the boiler (100) from the mat (200). ### Claim 4 (depends on 3) The apparatus of claim 3, wherein a residual water discharge flow path (Si) that communicates with the boiler-side discharge connector (141) and the residual water outlet (340), and an air inlet flow path (S2) that communicates with the air inlet (350) and the mat-side discharge connector (221) are formed inside the discharge and air inlet (310). ### Claim 5 (depends on 4) The apparatus of claim 4, wherein a barrier wall (370) configured to block fluid communication between the residual water discharge flow path (S1) and the air inlet flow path (S2) is provided inside the discharge and air inlet (310). ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the boiler connector (140) comprises a first valve (144) that opens a flow path inside the boiler connector (140) in a state in which the boiler connector (140) is coupled to the mat connector (220) or the residual water removing connector (300) and that closes the flow path inside the boiler connector (140) in a state in which the boiler connector (140) is separated from the mat connector (220) or the residual water removing connector (300). ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the mat connector (220) comprises a second valve (225) that opens a flow path inside the mat connector (220) in a state in which the mat connector (220) is coupled to the boiler connector (140) or the residual water removing connector (300) and that closes the flow path inside the mat connector (220) in a state in which the mat connector (220) is separated from the boiler connector (140) or the residual water removing connector (300). ### Claim 8 (depends on 1) The apparatus of claim 1, wherein a connection portion between the boiler connector (140) and the residual water removing connector (300) comprises a first connector detachable portion (360) that is elastically supported to be engaged with the boiler connector (140) and the residual water removing connector (300) when the boiler connector (140) and the residual water removing connector (300) are coupled to each other and that is operated so that the engagement between the boiler connector (140) and the residual water removing connector (300) is released by a pressing operation of a user when the boiler connector (140) and the residual water removing connector (300) are separated from each other. ### Claim 9 (depends on 1) The apparatus of claim 1, wherein a connection portion between the residual water removing connector (300) and the mat connector (220) comprises a second connector detachable portion (224) that is elastically supported to be engaged with the residual water removing connector (300) and the mat connector (220) when the residual water removing connector (300) and the mat connector (220) are coupled to each other, and that is operated so that the engagement between the residual water removing connector (300) and the mat connector (220) is released by a pressing operation of the user when the residual water removing connector (300) and the mat connector (220) are separated from each other. ### Claim 10 An apparatus for removing residual water in a hot water mat, the hot water mat including a boiler (100) for supplying hot water by heating water and a mat (200) in which heating is performed by using hot water heated by the boiler (100) as a heat source, the apparatus comprising: a circulating pump (120) provided in the boiler (100) and configured to pump water to be circulated between the boiler (100) and the mat (200); a boiler connector (140) including a boiler-side discharge connector (141) and boiler-side water return connectors (142, 143), which are connected to the boiler (100); and a mat connector (220-1) including a mat-side discharge connector (221) and mat-side water return connectors (222, 223), which are connected to the mat (200), wherein the boiler-side discharge connector (141) or the mat-side discharge connector (221) comprises a gate (226) that opens/closes a flow path inside the boiler-side discharge connector (141) or the mat-side discharge connector (221), a residual water outlet (227) disposed at one side of the gate (226) through which water flowing is discharged through an operation of the circulating pump (120), and a first opening/closing valve (227a) that opens/closes the residual water outlet (227). ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the boiler-side discharge connector (141) or the mat-side discharge connector (221) comprises an air inlet (228) disposed at the other side of the gate (226) and a second opening/closing valve (228a) that opens/closes the air inlet (228).