US5263335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operation controller for air conditioner
Assignee: Mitsubishi Electric Corp
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Filing: 1992-07-10
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Granted: 1993-11-23
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Expires: 2012-07-10
Abstract
Abstract An operation controller for an air conditioner designed to decrease a difference between an ambient temperature and a set temperature by varying the number of revolutions of a compressor, includes: a means for calculating an operation ratio of the compressor; and a means for determining the range of varying an operation frequency of the compressor in accordance with the operation ratio.
Inventors
- 👤 Kazuaki Isono
- 👤 Toshihiro Tanaka
- 👤 Seiji Kubo
- 👤 Hidenori Ishioka
- 👤 Hideaki Nagatomo
- 👤 Katsuyuki Aoki
- 👤 Yasuo Imaki
- 👤 Tomofumi Tezuka
- 👤 Isao Funayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:08
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/30; F24F11/46; F24F11/62; F24F11/63; F24F11/70; F24F11/80; F24F11/86; F24F11/88; F25; F25B; F25B49/00; F25B49/02; F25B49/025; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; F24F2110/00; F24F2110/10; F24F2110/12; F24F2140/00; F24F2140/50; F25B2600/00; F25B2600/02; F25B2600/021; F25B2600/025; F25B2600/0251; Y; Y02; Y02B; Y02B30/00; Y02B30/70
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
93 words
An operation controller for an air conditioner, for controlling an operation frequency of a compressor of the air conditioner so that a difference between an ambient temperature and a set temperature can be decreased, comprising: means for initially setting a minimum frequency and a maximum frequency at which the compressor will operate; means for calculating an operation ratio of said compressor, said operation ratio representing a proportion of time that the compressor is operating; and means for resetting the minimum frequency at which the compressor will operate based on the calculated operation ratio.
Claim 2
Dependent Claim
93 words
An operation controller for an air conditioner, for controlling an operation frequency of a compressor of the air conditioner so that a difference between an ambient temperature and a set temperature can be decreased, comprising: means for initially setting a minimum frequency and a maximum frequency at which the compressor will operate; means for calculating an operation ratio of said compressor, said operation ratio representing a proportion of time that the compressor is operating; and means for resetting the minimum frequency at which the compressor will operate based on the calculated operation ratio.
Claim 3
Dependent Claim
56 words
The operation controller according to claim 1, further comprising: means for comparing the calculated operated ratio with first and second predetermined values, the first predetermined value being greater than the second predetermined value, and wherein the minimum frequency is reset based on the comparisons of the calculated operation ratio with the first and second predetermined values.
Claim 4
Dependent Claim
98 words
The operation controller according to claim 2, wherein when the calculated operation ratio is greater than the first predetermined value, the minimum frequency at which the compressor will operate is not reset, wherein when the calculated operation ratio is less than the first predetermined value, but greater than the second predetermined value, the minimum frequency at which the compressor will operate is decreased by a third predetermined value, and wherein when the calculated operation ratio is less than the second predetermined value, the minimum frequency at which the compressor will operate is decreased by a fourth predetermined value.
Claim 5
Dependent Claim
21 words
The operation controller according to claim 3, wherein the first predetermined value is 80% and the second predetermined value is 50%.
Claim 6
Dependent Claim
23 words
The operation controller according to claim 3, wherein the third predetermined value is 2 Hz and the fourth predetermined value is 4 Hz.
Claim 7
Dependent Claim
23 words
The operation controller according to claim 4, wherein the third predetermined value is 2 Hz and the fourth predetermined value is 4 Hz.
Claim 8
Independent Claim
92 words
A method for controlling of an air conditioner, for controlling an operation frequency of a compressor of the air conditioner so that a difference between an ambient temperature and a set temperature can be decreased, comprising the steps of: setting an initial minimum frequency and an initial maximum frequency at which the compressor will operate; calculating an operation ratio of said compressor, said operation ratio representing a proportion of time that the compressor is operating; and resetting the minimum frequency at which the compressor will operate based on the calculated operation ratio.
Claim 9
Independent Claim
92 words
A method for controlling of an air conditioner, for controlling an operation frequency of a compressor of the air conditioner so that a difference between an ambient temperature and a set temperature can be decreased, comprising the steps of: setting an initial minimum frequency and an initial maximum frequency at which the compressor will operate; calculating an operation ratio of said compressor, said operation ratio representing a proportion of time that the compressor is operating; and resetting the minimum frequency at which the compressor will operate based on the calculated operation ratio.
Claim 10
Dependent Claim
56 words
The method according to claim 7, further comprising the step of: comparing the calculated operation ratio with first and second predetermined values, the first predetermined value being greater than the second predetermined value, and wherein the minimum frequency is reset based on the comparisons of the calculated operation ratio with the first and second predetermined values.
Claim 11
Dependent Claim
97 words
The method according to claim 8, wherein when the calculated operation ratio is greater than the first predetermined value, the minimum frequency at which the compressor will operate is not reset, wherein when the calculated operation ratio is less than the first predetermined value, but greater than the second predetermined value, the minimum frequency at which the compressor will operate is decreased by a third predetermined value, and wherein when the calculated operation ratio is less than the second predetermined value, the minimum frequency at which the compressor will operate is decreased by a fourth predetermined value.
Claim 12
Dependent Claim
20 words
The method according to claim 9, wherein the first predetermined value is 80% and the second predetermined value is 50%.
Claim 13
Dependent Claim
22 words
The method according to claim 9, wherein the third predetermined value is 2 Hz and the fourth predetermined value is 4 Hz.
Claim 14
Dependent Claim
22 words
The method according to claim 10, wherein the third predetermined value is 2 Hz and the fourth predetermined value is 4 Hz.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-22 | 1997-05-24 | 1997-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-22 | 2001-05-24 | 2001-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-22 | 2005-05-24 | 2005-11-23 | $7700.00 | Window Closed / Lapsed |