ZA792499B - Heat pumps - Google Patents
Heat pumpsInfo
- Publication number
- ZA792499B ZA792499B ZA792499A ZA792499A ZA792499B ZA 792499 B ZA792499 B ZA 792499B ZA 792499 A ZA792499 A ZA 792499A ZA 792499 A ZA792499 A ZA 792499A ZA 792499 B ZA792499 B ZA 792499B
- Authority
- ZA
- South Africa
- Prior art keywords
- heat pumps
- pumps
- heat
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/025—Motor control arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53875—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/0271—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means the compressor allows rotation in reverse direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPD456878 | 1978-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA792499B true ZA792499B (en) | 1980-08-27 |
Family
ID=3767591
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA792500A ZA792500B (en) | 1978-06-01 | 1979-05-22 | Control system for polyphase loads |
| ZA792499A ZA792499B (en) | 1978-06-01 | 1979-05-22 | Heat pumps |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA792500A ZA792500B (en) | 1978-06-01 | 1979-05-22 | Control system for polyphase loads |
Country Status (13)
| Country | Link |
|---|---|
| JP (2) | JPS558588A (en) |
| CA (2) | CA1094836A (en) |
| CH (1) | CH633393A5 (en) |
| DE (2) | DE2921729A1 (en) |
| DK (2) | DK227079A (en) |
| FR (2) | FR2427733A1 (en) |
| GB (2) | GB2022942B (en) |
| IL (2) | IL57442A (en) |
| IT (2) | IT1121073B (en) |
| NL (2) | NL7904355A (en) |
| NZ (2) | NZ190518A (en) |
| SE (2) | SE7904843L (en) |
| ZA (2) | ZA792500B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE7907945L (en) * | 1979-09-25 | 1981-03-26 | Bo John Stefan Nystrom | MULTI-PHASE GENERATION DEVICE DEVICE |
| EP0046147A1 (en) * | 1980-08-11 | 1982-02-24 | Heinrich Wächtler | Device for moving liquid mediums, particularly in heat pumps |
| CH660100A5 (en) * | 1981-12-18 | 1987-03-13 | Cerac Inst Sa | DEVICE FOR DRIVING A COMPRESSOR. |
| DE3239284A1 (en) * | 1982-10-23 | 1984-05-03 | DC-Aggregate Engineering AG, 6363 Fürigen | THREE-PHASE ASYNCHRONOUS MOTOR |
| US4734628A (en) * | 1986-12-01 | 1988-03-29 | Carrier Corporation | Electrically commutated, variable speed compressor control system |
| JP3156801B2 (en) * | 1991-10-17 | 2001-04-16 | 本田技研工業株式会社 | Automotive air conditioners |
| JP3267993B2 (en) * | 1991-11-27 | 2002-03-25 | 本田技研工業株式会社 | Air conditioning system for vehicles |
| JP3125198B2 (en) * | 1991-12-04 | 2001-01-15 | 本田技研工業株式会社 | Battery temperature control device for electric vehicle |
| US5927089A (en) * | 1995-11-13 | 1999-07-27 | O'donnell; Dennis W. | Air conditioner for a motor vehicle |
| JP2002243246A (en) * | 2001-02-15 | 2002-08-28 | Sanden Corp | Air conditioner |
| CN106524549A (en) * | 2016-12-01 | 2017-03-22 | 广州华凌制冷设备有限公司 | Constant-frequency air conditioning system and control method thereof |
| CN106969569A (en) * | 2017-03-21 | 2017-07-21 | 合肥美的电冰箱有限公司 | Refrigeration plant control method, system and refrigeration plant |
| CN110108748B (en) * | 2019-06-05 | 2021-09-10 | 安徽理工大学 | Frost heaving experimental device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1486812A (en) * | 1973-09-03 | 1977-09-28 | Nz Inventions Dev Authority | Waveform synthesis using switching circuits |
| JPS5549509B2 (en) * | 1973-12-28 | 1980-12-12 | ||
| SE392766B (en) * | 1974-04-18 | 1977-04-18 | Projectus Ind Produkter Ab | CONSTRUCTION SYSTEM, INCLUDING A HEAT PUMP AND A FUEL-LEADED HEAT BOILER WITH A RADIATOR CIRCUIT |
| DE2459769A1 (en) * | 1974-12-18 | 1976-07-01 | Krupp Gmbh | CONTROL DEVICE FOR THE COOLING CAPACITY IN AN AIR-CONDITIONING SYSTEM OF A TRAIN CARRIAGE |
-
1979
- 1979-05-22 NZ NZ190518A patent/NZ190518A/en unknown
- 1979-05-22 ZA ZA792500A patent/ZA792500B/en unknown
- 1979-05-22 NZ NZ190517A patent/NZ190517A/en unknown
- 1979-05-22 ZA ZA792499A patent/ZA792499B/en unknown
- 1979-05-23 GB GB7917871A patent/GB2022942B/en not_active Expired
- 1979-05-23 GB GB7917870A patent/GB2022808B/en not_active Expired
- 1979-05-29 DE DE19792921729 patent/DE2921729A1/en not_active Withdrawn
- 1979-05-29 DE DE19792921678 patent/DE2921678A1/en not_active Withdrawn
- 1979-05-30 IL IL57442A patent/IL57442A/en unknown
- 1979-05-30 IL IL57441A patent/IL57441A/en unknown
- 1979-05-31 DK DK227079A patent/DK227079A/en unknown
- 1979-05-31 IT IT23164/79A patent/IT1121073B/en active
- 1979-05-31 CA CA328,862A patent/CA1094836A/en not_active Expired
- 1979-05-31 CA CA000328863A patent/CA1139361A/en not_active Expired
- 1979-05-31 DK DK226979A patent/DK226979A/en unknown
- 1979-05-31 IT IT23163/79A patent/IT1121316B/en active
- 1979-06-01 SE SE7904843A patent/SE7904843L/en not_active Application Discontinuation
- 1979-06-01 JP JP6759579A patent/JPS558588A/en active Pending
- 1979-06-01 NL NL7904355A patent/NL7904355A/en not_active Application Discontinuation
- 1979-06-01 NL NL7904354A patent/NL7904354A/en not_active Application Discontinuation
- 1979-06-01 FR FR7914114A patent/FR2427733A1/en not_active Withdrawn
- 1979-06-01 SE SE7904842A patent/SE7904842L/en not_active Application Discontinuation
- 1979-06-01 JP JP6759479A patent/JPS558293A/en active Pending
- 1979-06-01 CH CH514179A patent/CH633393A5/en not_active IP Right Cessation
- 1979-06-01 FR FR7914113A patent/FR2427564A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CH633393A5 (en) | 1982-11-30 |
| GB2022808A (en) | 1979-12-19 |
| JPS558293A (en) | 1980-01-21 |
| IL57442A (en) | 1983-12-30 |
| IT7923163A0 (en) | 1979-05-31 |
| CA1139361A (en) | 1983-01-11 |
| IL57442A0 (en) | 1979-09-30 |
| SE7904843L (en) | 1979-12-02 |
| FR2427564A1 (en) | 1979-12-28 |
| NZ190517A (en) | 1982-12-21 |
| FR2427733A1 (en) | 1979-12-28 |
| CA1094836A (en) | 1981-02-03 |
| DK227079A (en) | 1979-12-02 |
| DE2921678A1 (en) | 1979-12-06 |
| SE7904842L (en) | 1979-12-02 |
| GB2022808B (en) | 1982-11-17 |
| IT1121073B (en) | 1986-03-26 |
| IT7923164A0 (en) | 1979-05-31 |
| ZA792500B (en) | 1980-09-24 |
| DK226979A (en) | 1979-12-02 |
| GB2022942B (en) | 1982-06-09 |
| NL7904355A (en) | 1979-12-04 |
| NL7904354A (en) | 1979-12-04 |
| NZ190518A (en) | 1982-12-21 |
| DE2921729A1 (en) | 1979-12-06 |
| GB2022942A (en) | 1979-12-19 |
| IT1121316B (en) | 1986-04-02 |
| JPS558588A (en) | 1980-01-22 |
| IL57441A (en) | 1982-08-31 |
| IL57441A0 (en) | 1979-09-30 |
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