| 摘要 |
A universal control system is provided for a room air conditioner or heat pump that has a number of sensor inputs. An electronic control system with a microcontroller and microcomputer are used to provide a large number of operations that can be performed by (1) manufacturer, (2) end users and (3) maintenance personnel. The manufacturer can load different versions of a software program to match the unit. The end user can program in a large number of different conditions or schedules the end user finds desirable, plus the end user is advised of maintenance requirements or faults. The maintenance personnel may perform diagnostics, determine fault history, upload improved or replacement software, as well as the numerous maintenance functions normally performed by maintenance personnel. |
| 主权项 |
1. An electronic control system for communicating with an end user of a room air conditioner and/or heat pump having a compressor, an accumulator, refrigerant/heating fluid, outdoor coil, indoor coil, reversing valve, cooling/heating capillary tube, a fan and a blower; said electronic control system comprising:
sensor inputs for determining (a) pressure of said refrigerant/heating fluid, (b) temperature of indoor air, (c) temperature of outdoor air, (d) temperature of said outdoor coil, (e) temperature of said indoor coil, (f) temperature of air on discharge side of said indoor coil and (g) humidity of indoor air; outputs for controlling (a) said compressor, (b) said reversing valve, (c) said fan and (d) said blower; between said sensor inputs and said outputs being located a main control and a user interface connected thereto, said main control including a microcontroller and said user interface including a microcomputer; said microcontroller performing diagnostic testing to detect faults in said air conditioner/heat pump and, if a fault or faults are detected, provide a fault indication to an end user via said user interface; said microcomputer recording a history of said fault or said faults; said microcomputer of said user interface operates a display and control switches communicating to, and receiving communication from, said end user; said display is white on black using twisted nematic technology; said microcontroller has control and processing algorithms therein to regulate said outputs, said microcontroller running diagnostic routines to monitor the health of said room air conditioner and/or heat pump and, if a health problem is detected, take corrective action based upon severity of said detected health problem; and a heater coil so that if said outside coil begins to freeze up and needs to be reverse cycled, said outputs may also control said heater coil to provide heat during said reverse cycling. |
