Control system for an air conditioner

• US 5,720,176 A
• Filed: 10/19/1994
• Issued: 02/24/1998
• Est. Priority Date: 10/19/1994
• Status: Expired due to Fees

• Current Assignee: Whirlpool Corporation
• Original Assignee: Whirlpool Corporation
• Inventors: Saleh, Saleh A., McColgin, Jerry L., Elliott, Mark T., Manson, Larry J., Scriber, Chris A., Askin, Byron E. II, Paustian, John K., Glotzbach, Patrick J.
• Primary Examiner(s): Wayner, William E.
• Application Number:
  US08/325,886
• Time in Patent Office: 1,224 Days
• Field of Search: 236/46 R, 165/238, 62/231, 62/89
• US Class Current: 62/89
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/39 Monitoring filter performance
• CPC Class Codes: F24F 11/52 Indication arrangements, e.g. displays
• CPC Class Codes: F24F 11/56 Remote control
• CPC Class Codes: F24F 11/61 using timers
• CPC Class Codes: F24F 11/63 Electronic processing
• CPC Class Codes: F24F 11/66 Sleep mode
• CPC Class Codes: F24F 11/77 by controlling the speed of ventilators
• CPC Class Codes: F24F 11/88 Electrical aspects, e.g. circuits
• CPC Class Codes: H01H 9/0235 specially adapted for remote control, e.g. of audio or video apparatus

Abstract

An air conditioner having a controller configured to process multiple temperature inputs, to provide a cycle of operation to provide comfort during sleeping, to provide an automatic cycle of operation wherein a burst of cooling air is provided on demand and/or which is configured to receive and respond to remote signals having different protocols.

Claims

1. A method for operating an automatic control for an air conditioner having a compressor motor and a fan motor which automatic control operates the air conditioner in response to a temperature set point during an offset cycle, the method comprising:

(a) during the offset cycle varying the temperature set point between a starting value and the starting value plus a maximum temperature adjustment over a first predetermined time period;

(b) at a conclusion of a second predetermined time period, resetting the temperature set point to the starting value;

(c) varying the maximum temperature adjustment in accordance with user input during the offset cycle; and

(d) memorizing the so varied maximum temperature adjustment so that it is used during a subsequent cycle.

2. The method of claim 1 wherein the temperature set point is varied at a predetermined rate of temperature adjustment during the first predetermined period of time.

3. The method of claim 2, wherein the predetermined rate comprises increments of 1°

C. per hour.

4. The method of claim 1 wherein the first predetermined period of time is two hours.

5. The method of claim 1 wherein the first predetermined time period is two hours and the second predetermined time period is at least three hours.

6. The method of claim 1 wherein the first and second predetermined time periods are equal.

7. The method of claim 1 wherein the maximum temperature adjustment is 2°

C.

8. The method of claim 1 wherein the temperature set point is varied by 3°

C.

9. The method of claim 1, further comprising:

(a) varying the temperature set point from the starting value by a predetermined amount over the first predetermined time period; and

(b) determining the predetermined amount by selecting same from among a minimum of (1) a previous set point plus the maximum temperature adjustment and (2) a predetermined rate of temperature adjustment multiplied by a time increment of the first predetermined time period.

10. The method of claim 9, further comprising:

utilizing the memorized maximum temperature adjustment acquired from user input during a prior predetermined time period.

11. The method of claim 1, further comprising:

(a) limiting each of a predetermined rate of temperature adjustment and the maximum temperature adjustment within a range from 1° and

3°

; and

(b) varying the temperature set point between the starting value and the starting value plus the maximum temperature adjustment by the predetermined rate of temperature adjustment over the first predetermined time period.

12. The method of claim 1, further comprising:

(a) selecting a predetermined rate of temperature adjustment and the maximum temperature adjustment; and

(b) varying the temperature set point between the starting value and the starting value plus the maximum temperature adjustment by periodically changing the temperature set point by the predetermined rate over the first predetermined time period.

13. An air conditioner having a compressor motor, a fan motor and an electronic controller, the electronic controller configured to effect an offset cycle of operation wherein:

(a) the temperature set point is varied between a starting value and the starting value plus a maximum temperature adjustment over a first predetermined time period;

(b) the temperature set point is reset to the starting value at a conclusion of a second predetermined time period;

(c) if the maximum temperature adjustment is varied in accordance with user input during offset; and

(d) the so varied maximum temperature adjustment is memorized and used during a subsequent offset cycle.

14. The air conditioner of claim 13, wherein:

(a) the temperature set point is varied from the starting value by a predetermined amount over the first determined time period; and

(b) the predetermined amount is determined by selecting same from among a minimum of (1) a previous set point plus the maximum temperature adjustment and (2) a predetermined rate of temperature adjustment multiplied by a time increment of the first predetermined time period.

15. The air conditioner of claim 14 wherein the maximum temperature adjustment is memorized according to user input during a prior cycle of operation.

16. The air conditioner of claim 13, wherein:

(a) each of a predetermined rate of temperature adjustment and the maximum temperature adjustment are limited within a range from 1° and

3°

; and

(b) the temperature set point is varied between the starting value and the starting value plus the maximum adjustment temperature by the predetermined rate of temperature adjustment over the first predetermined time period.

17. The air conditioner of claim 13, wherein:

(a) a predetermined rate of temperature adjustment and the maximum temperature adjustment are selected; and

(b) the temperature set point is varied between the starting value and the starting value plus the maximum temperature adjustment by periodically changing the temperature set point by the predetermined temperature adjustment over the first predetermined time period.

18. The air conditioner of claim 13, wherein the temperature set point is varied at a predetermined rate of temperature adjustment during the first predetermined period of time.

19. The air conditioner of claim 13, wherein the predetermined period of time is two hours.

20. The air conditioner of claim 18, wherein the predetermined rate comprises increments of 1°

C. per hour.

21. The air conditioner of claim 13, the first predetermined time period is two hours and the second predetermined time period is at least three hours.

22. The air conditioner of claim 13, wherein the first and second predetermined time periods are equal.

23. The air conditioner of claim 13, wherein the maximum temperature adjustment is 2°

C.

24. The air conditioner of claim 13, wherein the temperature set point is varied by 3°

C.