# US 10,768,220 B2 · Refrigeration system, failure diagnostic system thereof, failure diagnostic method, controller and storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,768,220 B2 - Document ID: US10768220B2 - Status: Granted - Kind: B2 - Application number: 16/210,310 - Filed: 2018-12-05 - Published: 2019-06-13 - Granted: 2020-09-08 - Earliest claimed: 2017-12-07 - Assignees: Carrier Corporation - Applicants: Carrier Corporation - Inventors: Shufu Ding; QiaoHui Shi; Shuang Li; Zhongjian Li; Hui Li - Web page: https://patentgrep.com/patent/US10768220B2 ## CPC - G01R 31/2825: {in household appliances or professional audio/video equipment (testing LAN's H04L43/50; testing TV systems H04N17/00; testing loudspeakers H04R29/00)} - F25B 49/00: Arrangement or mounting of control or safety devices - F25B 49/005: {of safety devices (F25B49/02 and F25B49/04 take precedence)} - G08B 21/187: {Machine fault alarms} - F25B 2500/06: Damage - F25B 2500/12: Sound - F25B 2700/03: Oil level - F25B 2700/1932: Oil pressures - F25B 2700/197: of the evaporator - F25B 2700/21172: at the inlet - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS ## Abstract A refrigeration system, a fault diagnosis system and a fault diagnosis method for the refrigeration system, a controller and a storage medium. The fault diagnosis method includes: receiving a fault alarm sent by an associated refrigeration system, and acquiring a fault cause list associated with the fault alarm; determining whether to run a fault diagnosis system associated with the fault alarm; and when the fault diagnosis system associated with the fault alarm is run, checking the associated refrigeration system sequentially according to the fault cause list, and acquiring a fault cause and a repair means list associated with the fault cause. ## Claims ### Claim 1 A fault diagnosis method for a refrigeration system, comprising: Step S100, receiving a fault alarm sent by an associated refrigeration system, and acquiring a fault cause list associated with the fault alarm; Step S200, determining whether to run a fault diagnosis system associated with the fault alarm; and Step S300, when the fault diagnosis system associated with the fault alarm is run, checking the associated refrigeration system sequentially according to the fault cause list, and acquiring a fault cause and a repair means list associated with the fault cause. ### Claim 2 (depends on 1) The fault diagnosis method according to claim 1, further comprising: Step S400, when the fault diagnosis system associated with the fault alarm is not run, directly outputting the fault cause list associated with the fault alarm. ### Claim 3 (depends on 1) The fault diagnosis method according to claim 1, further comprising: Step S500, inputting fault diagnosis feedback, wherein the fault diagnosis feedback comprises: the fault has been resolved or the fault is not resolved. ### Claim 4 (depends on 3) The fault diagnosis method according to claim 3, wherein the fault diagnosis feedback that the fault has been resolved comprises: the fault has been resolved based on the repair means list associated with the fault cause, or the fault has been resolved based on a new repair means for the fault cause, or the fault has been resolved based on a new fault cause and a new repair means for the new fault cause. ### Claim 5 (depends on 4) The fault diagnosis method according to claim 4, further comprising Step S600: when the fault has been resolved based on a new repair means for the fault cause, entering the new repair means into the repair means list and associating the new repair means with the fault cause; or when the fault has been resolved based on a new fault cause and a new repair means for the new fault cause, entering the new fault cause into the fault cause list, creating a repair means list associated with the new fault cause, and entering the new repair means into the repair means list. ### Claim 6 (depends on 3) The fault diagnosis method according to claim 3, wherein the fault diagnosis feedback that the fault is not resolved comprises: no fault cause is found, or no repair means is found. ### Claim 7 (depends on 1) The fault diagnosis method according to claim 1, wherein when the fault cause list comprises multiple fault causes, the multiple fault causes are sorted according to priorities based on operation convenience and/or fault possibilities, a fault cause with high operation convenience and/or a high fault possibility having a high priority; and the associated refrigeration system is checked according to the priority order of the fault causes in Step S300. ### Claim 8 (depends on 1) The fault diagnosis method according to claim 1, wherein when the repair means list comprises multiple repair means, the multiple repair means are sorted according to recommendation levels based on repair convenience and/or repair possibilities, and a repair means cause with high repair convenience and/or a high repair possibility has a high recommendation level. ### Claim 9 (depends on 1) The fault diagnosis method according to claim 1, wherein each of the fault causes is associated with one or more of the repair means. ### Claim 10 (depends on 1) The fault diagnosis method according to claim 1, wherein each of the fault causes comprises one or more judgment conditions. ### Claim 11 (depends on 1) A controller, comprising a processor and a memory, wherein the memory is configured to store instructions, and the method according to claim 1 is implemented when the processor executes the instructions. ### Claim 12 (depends on 1) A storage medium, configured to store a program, wherein the program can implement the method according to any claim 1 when being executed. ### Claim 13 A fault diagnosis system for a refrigeration system, comprising: a receiving module configured to receive a fault alarm sent by an associated refrigeration system; a storage module configured to store fault cause lists, associations of the fault cause lists and fault alarms, repair means lists and associations of the repair means lists and fault causes; and a processing module configured to: acquire a fault cause list associated with the fault alarm; determine whether to run the fault diagnosis system associated with the fault alarm; and when the fault diagnosis system associated with the fault alarm is run, check the associated refrigeration system sequentially according to the fault cause list and acquire a fault cause and a repair means list associated with the fault cause; or when the fault diagnosis system associated with the fault alarm is not run, directly output the fault cause list associated with the fault alarm. ### Claim 14 (depends on 13) The fault diagnosis system according to claim 13, further comprising a feedback module configured to receive fault diagnosis feedback, wherein the fault diagnosis feedback comprises: the fault has been resolved or the fault is not resolved. ### Claim 15 (depends on 14) The fault diagnosis system according to claim 14, wherein the fault diagnosis feedback that the fault has been resolved comprises: the fault has been resolved based on the repair means list associated with the fault cause, or the fault has been resolved based on a new repair means for the fault cause, or the fault has been resolved based on a new fault cause and a new repair means for the new fault cause. ### Claim 16 (depends on 15) The fault diagnosis system according to claim 15, further comprising a learning module configured to: when the fault has been resolved based on a new repair means for the fault cause, enter the new repair means into the repair means list and associate the new repair means with the fault cause; or when the fault has been resolved based on a new fault cause and a new repair means for the new fault cause, enter the new fault cause into the fault cause list, create a repair means list associated with the new fault cause, and enter the new repair means into the repair means list. ### Claim 17 (depends on 14) The fault diagnosis system according to claim 14, wherein the fault diagnosis feedback that the fault is not resolved comprises: no fault cause is found, or no repair means is found. ### Claim 18 (depends on 13) The fault diagnosis system according to claim 13, further comprising a sorting module configured to: when the fault cause list comprises multiple fault causes, sort the multiple fault causes according to priorities based on operation convenience and/or fault possibilities, wherein a fault cause with high operation convenience and/or a high fault possibility has a high priority; and/or when the repair means list comprises multiple repair means, sort the multiple repair means according to recommendation levels based on repair convenience and/or repair possibilities, wherein a repair means cause with high repair convenience and/or a high repair possibility has a high recommendation level. ### Claim 19 (depends on 13) The fault diagnosis system according to claim 13, further comprising an interaction module configured to provide information interaction between on-site maintenance personnel and a control center administrator. ### Claim 20 (depends on 13) A refrigeration system, comprising: a communication module configured to send a fault alarm to the fault diagnosis system according to claim 13.