CN100334401C - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN100334401C CN100334401C CNB2003101230500A CN200310123050A CN100334401C CN 100334401 C CN100334401 C CN 100334401C CN B2003101230500 A CNB2003101230500 A CN B2003101230500A CN 200310123050 A CN200310123050 A CN 200310123050A CN 100334401 C CN100334401 C CN 100334401C
- Authority
- CN
- China
- Prior art keywords
- frequency
- compressor
- air conditioner
- operating frequency
- revolution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- F25B2313/029—Control issues
- F25B2313/0294—Control issues related to the outdoor fan, e.g. controlling speed
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
To stably operate an air conditioner without resonance by changing a prohibiting frequency itself. An outdoor unit has a compressor 1 and an outdoor fan 6. When an operating frequency indicated to the compressor 1 from a control means 20 corresponds to a predetermined prohibiting frequency, the control means 20 changes a rotating speed of the outdoor fan 6 to a prescribed rotating speed from a rotating speed of a present state. (C)2005,JPO&NCIPI .
Description
Technical field
The present invention relates to the air conditioner of the operating frequency of compressor with variable, specifically, relate to make the air conditioner that frequency changes of forbidding of the compressor predesignated.
Background technology
In existing air conditioner, the operating frequency of compressor and the frequency of AC power (50Hz or 60Hz) or its integral multiple is consistent or with the situation of the resonant frequency unanimity of kind of refrigeration cycle under, can produce all labile states.That is, the running instability of compressor, send abnormal sound, produce abnormal vibrations.Therefore, the existing air conditioner operating frequency that will produce these all labile states in advance is set at and forbids frequency.Like this, make compressor when being equivalent to forbid the running frequency work of frequency, the structure that has is that the control compressor is at the appointed time alternately than forbidding operating frequency that frequency is high slightly and turning round on the low slightly operating frequency of frequency than forbidding.Existing air conditioner so for example, is opened in the flat 7-31193 communique disclosed the spy.
But there is following problem in above-mentioned existing structure.Promptly, operating frequency at compressor is equivalent to forbid under the situation of frequency, if control makes it at the appointed time alternately than forbidding operating frequency that frequency is high slightly and when forbidding turning round on the low slightly operating frequency of frequency, as refrigerating capacity, can obtain and refrigerating capacity equal when forbidding frequency run.But, must be when operating frequency changes alternately by forbidding frequency, though the very short problem that produces above-mentioned covibration that also exists of time.
Many its specifications of the component parts of air conditioner are that provide, fixing, and the revolution of the operating frequency of compressor, indoor fan and outdoor fan etc. are not fixing but variable.Therefore, according to the combined situation of the operating frequency of compressor, the revolution of indoor fan and the revolution of outdoor fan etc., the resonant frequency of kind of refrigeration cycle has several.For fear of this resonant frequency, prior art with this resonant frequency as forbid that frequency removes from the operating frequency of compressor.
Following table is the correspondence table of the revolution of the operating frequency of the compressor of existing air conditioner and outdoor fan.
| The operating frequency of compressor [Hz] | The revolution of outdoor fan [rpm] |
| 0～30 30～60 60～90 90～ | 650 700 750 800 |
Under the constant situation of other variable key element, as the table shows, the operating frequency of compressor and the revolution of outdoor fan are 1 pair 1 relations.Therefore, if the operating frequency of compressor is fixed, the revolution of outdoor fan determines that also the result is that the resonant frequency of kind of refrigeration cycle is in like manner also determined on a certain assigned frequency.
Summary of the invention
The objective of the invention is to solve above-mentioned existing issue, can forbid that frequency itself changes, realize the not stable air-conditioner operation of resonance by making.
Air conditioner, comprise the compressor that operating frequency is variable, the frequency control apparatus of control compressor operation frequency, outdoor heat exchanger and the subsidiary at least fan that is installed on the outdoor heat exchanger, is used to promote heat exchange between cold-producing medium and the air also comprise:
When the operating frequency of indication compressor be equivalent to predesignate forbid frequency the time, the frequency control apparatus that the revolution of fan is changed.
Description of drawings
Figure 1 shows that the refrigeration cyclic graph of the air conditioner of the embodiment of the invention 1;
Figure 2 shows that the refrigeration cyclic graph of the air conditioner of the embodiment of the invention 2.
The specific embodiment
Following with reference to the description of drawings embodiments of the invention.
(embodiment 1)
Figure 1 shows that the refrigeration cyclic graph of the air conditioner of the embodiment of the invention 1.In Fig. 1, the action when at first cooling operation being described.The cold-producing medium that spues from compressor 1 is fed to cross valve 3.Cold-producing medium is by cross valve 3 back condensations in outdoor heat exchanger 2, and decompression in capillary 4.Pass through cross valve 3 after post-decompression cold-producing medium evaporates in capillary 4 once more in indoor side heat exchanger 5.Cold-producing medium by cross valve 3 returns compressor 1 once more.
Action when secondly explanation heats running.The cold-producing medium that spues from compressor 1 is fed to cross valve 3.Cold-producing medium is by cross valve 3 back condensations in indoor side heat exchanger 5, and decompression in capillary 4.Post-decompression cold-producing medium evaporates in outdoor heat exchanger 2 also once more by cross valve 3 in capillary 4.Cold-producing medium by cross valve 3 returns compressor 1 once more.
Kind of refrigeration cycle as shown in Figure 1 can make its ability change by the speed adjustment of compressor 1.Compressor 1 is driven by the motor (not record among Fig. 1) that is installed on the compressor 1, and this motor is controlled its revolution by frequency converter 12.Be supplied to frequency converter 12 by the dc source that forms after 11 pairs of AC power 10 rectifications of rectifier.On the other hand, controller 20 is indicated to the operating frequency that frequency converter 12 provides compressor 1, and frequency converter 12 is controlled.The motor of installing on controller 20, frequency converter 12 and the compressor 1 constitutes the frequency control apparatus of control compressor 1 operating frequency.Thereby can variable speed drives compressor 1.
The outdoor fan 6 that heat exchange between promotion cold-producing medium and the air nearby is installed at outdoor heat exchanger 2.By making this outdoor fan 6 rotations, can realize high efficiency heat exchange between cold-producing medium and the air.In addition, controller 20 is also indicated the revolution of outdoor fan 6, and the revolution of outdoor fan 6 can be changed to arbitrary value.
Following table is the correspondence table of the revolution of the operating frequency of the embodiment of the invention 1 compressor 1 and outdoor fan 6.
In following table, describe with the operating frequency of compressor 1 a behavior example for " 30～60 ".When the operating frequency of compressor 1 was " 30～60 ", the revolution of outdoor fan 6 was selected from 2 values.That is, when compressor 1 turns round in the scope of 60Hz at 30Hz, do not taking place when forbidding the situation of frequency run, the revolution of outdoor fan 6 is the 700Hz runnings to put down in writing in " usually " hurdle.On the other hand, when compressor 1 turns round in the scope of 60Hz at 30Hz, take place when forbidding the situation of frequency run, the revolution of outdoor fan 6 is the 720Hz runnings to put down in writing in " situation of forbidding frequency " hurdle.
| The operating frequency of compressor [Hz] | The revolution of outdoor fan [rpm] | |
| Usually | The situation of forbidding frequency | |
| 0～30 30～60 60～90 90～ | 650 700 750 800 | 670 720 770 820 |
As the table shows, the operating frequency of compressor 1 is equivalent to predesignate when forbidding frequency, and the revolution of outdoor fan 6 is changed.Can change the resonant frequency of kind of refrigeration cycle like this, even and the operating frequency of compressor 1 be that the frequency of predesignating of forbidding can not resonate yet.Therefore, present embodiment can carry out friction, steady running that noise is little.And compressor can require to turn round under the situation of frequency not avoiding the indication of for adjustment capability body.Can realize stable compressor frequency control in addition.
State when cross valve 3 expressions among Fig. 1 heat running.When heating when running and cooling operation, the threshold switch state difference of cross valve 3.
In addition, when the indication compressor operating frequency be equivalent to predesignate forbid frequency the time, frequency control apparatus can make the revolution of fan uprise.So at least can not reduce the ability of air conditioner, and can relax or avoid owing to forbid the noise that the resonance on the frequency causes.
(embodiment 2)
Fig. 2 is the refrigeration cyclic graph of the air conditioner of the embodiment of the invention 2.In Fig. 2, with the parts of the identical numbering of Fig. 1 because function is identical thereby omit explanation to it.In addition, the flow direction of kind of refrigeration cycle is also identical with Fig. 1 thereby omit explanation to it.
In Fig. 2, anamorphoser 14 is inserted between frequency converter 12 and the compressor 1.Anamorphoser 14 makes from the signal waveform of frequency converter 12 outputs and deforms.This distortion is to carry out under the control of controller 20.The variation of being implemented by anamorphoser 14 makes the signal amplitude of frequency converter 12 outputs change in this way, perhaps replaces with trapezoidal wave, perhaps becomes sawtooth waveforms.Like this, the running status of motor changes in the compressor 1, thereby resonant frequency also changes.
The running frequency of compressor 1 is equivalent to predesignate when forbidding frequency, and controller 20 control anamorphosers 14 deform the signal of frequency converter 12 outputs.The motor of this signal drive compression machine 1 after the distortion.By the signal from frequency converter 12 is deformed and its waveform of conversion, can change the resonant frequency of kind of refrigeration cycle.Consequently, even can not resonate yet, thereby can realize steady running under the consistent situation of frequency in operating frequency and forbidding of predesignating.
As mentioned above, when the indication compressor operating frequency be equivalent to predesignate forbid frequency the time, the air conditioner of the present patent application can make the revolution of fan change.In addition, when the operating frequency of indication compressor be equivalent to predesignate forbid frequency the time, the air conditioner of the present patent application is supplied to the motor of compressor after can the signal skew with frequency converter output.The resonant frequency that can stagger like this, thereby the air conditioner of the present patent application can be realized stable compressor frequency control.
Claims (4)
1. air conditioner, comprise the compressor that operating frequency is variable, control the frequency control apparatus of described compressor operation frequency, outdoor heat exchanger and the subsidiary at least fan that is installed on the described outdoor heat exchanger, is used to promote heat exchange between cold-producing medium and the air, it is characterized in that, when the indication described compressor operating frequency be equivalent to predesignate forbid frequency the time, described frequency control apparatus changes the revolution of described fan.
2. air conditioner as claimed in claim 1 is characterized in that, described frequency control apparatus comprises controller and controlled, is used for the frequency converter of the motor of drive installation on described compressor by described controller.
3. air conditioner as claimed in claim 1, it is characterized in that, described frequency control apparatus comprises controller, controls, the anamorphoser that export the back is out of shape in the output of described frequency converter by the frequency converter of described controller control and by described controller, and the motor of described anamorphoser drive installation on described compressor.
4. air conditioner as claimed in claim 1 is characterized in that, when the indication described compressor operating frequency be equivalent to predesignate forbid frequency the time, described frequency control apparatus uprises the revolution of described fan.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003295121 | 2003-08-19 | ||
| JP2003295121A JP4049051B2 (en) | 2003-08-19 | 2003-08-19 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1584434A CN1584434A (en) | 2005-02-23 |
| CN100334401C true CN100334401C (en) | 2007-08-29 |
Family
ID=34371461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101230500A Expired - Fee Related CN100334401C (en) | 2003-08-19 | 2003-12-23 | Air conditioner |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4049051B2 (en) |
| CN (1) | CN100334401C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5075892B2 (en) * | 2009-09-15 | 2012-11-21 | 日立アプライアンス株式会社 | Inverter device and air conditioner, washing machine, refrigerator using the same |
| CN104048458B (en) * | 2013-03-11 | 2016-08-31 | 广东美的制冷设备有限公司 | The blower control method of refrigeration plant and system |
| CN104154627B (en) * | 2013-05-14 | 2017-03-22 | 珠海格力电器股份有限公司 | Control method of outdoor fan motors of air conditioner |
| CN104279690B (en) * | 2013-07-11 | 2017-04-19 | 海尔集团公司 | Static pressure air-speed control method |
| KR102295969B1 (en) * | 2015-03-24 | 2021-08-30 | 엘지전자 주식회사 | Air-conditioner and method for thereof |
| CN106016625B (en) * | 2016-07-01 | 2019-08-02 | 海信（山东）空调有限公司 | Frequency converting air-conditioner compressor and fan clap the control method and device of vibration |
| CN111197843A (en) * | 2018-10-30 | 2020-05-26 | 日立江森自控空调有限公司 | Air conditioner fan control method and system and air conditioner |
| CN112594903B (en) * | 2020-12-15 | 2022-04-12 | 佛山市顺德区美的电子科技有限公司 | Method and device for preventing beat frequency noise of outdoor unit of variable frequency air conditioner and variable frequency air conditioner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6277539A (en) * | 1985-09-27 | 1987-04-09 | Mitsubishi Electric Corp | Inverter air conditioner |
| JPH0731193A (en) * | 1993-07-06 | 1995-01-31 | Toshiba Corp | Controller for air-conditioner |
| JPH0886294A (en) * | 1994-09-16 | 1996-04-02 | Hitachi Ltd | Air-conditioner |
| JPH08282261A (en) * | 1995-04-20 | 1996-10-29 | Nissan Motor Co Ltd | Air conditioner for vehicle |
-
2003
- 2003-08-19 JP JP2003295121A patent/JP4049051B2/en not_active Expired - Fee Related
- 2003-12-23 CN CNB2003101230500A patent/CN100334401C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6277539A (en) * | 1985-09-27 | 1987-04-09 | Mitsubishi Electric Corp | Inverter air conditioner |
| JPH0731193A (en) * | 1993-07-06 | 1995-01-31 | Toshiba Corp | Controller for air-conditioner |
| JPH0886294A (en) * | 1994-09-16 | 1996-04-02 | Hitachi Ltd | Air-conditioner |
| JPH08282261A (en) * | 1995-04-20 | 1996-10-29 | Nissan Motor Co Ltd | Air conditioner for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4049051B2 (en) | 2008-02-20 |
| JP2005061766A (en) | 2005-03-10 |
| CN1584434A (en) | 2005-02-23 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070829 Termination date: 20131223 |