CN105546762A - Frequency conversion air conditioner and control method of frequency conversion air conditioner - Google Patents
Frequency conversion air conditioner and control method of frequency conversion air conditioner Download PDFInfo
- Publication number
- CN105546762A CN105546762A CN201610035513.5A CN201610035513A CN105546762A CN 105546762 A CN105546762 A CN 105546762A CN 201610035513 A CN201610035513 A CN 201610035513A CN 105546762 A CN105546762 A CN 105546762A
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- CN
- China
- Prior art keywords
- inverter
- compressor
- air conditioning
- air conditioner
- transducer air
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 title abstract 10
- 238000004378 air conditioning Methods 0.000 claims description 40
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
Abstract
The invention discloses a frequency conversion air conditioner and a control method of the frequency conversion air conditioner. The frequency conversion air conditioner comprises a frequency conversion compressor and an inverter circuit corresponding to the frequency conversion compressor. The inverter circuit comprises a first inverter and a second inverter which are arranged on a direct current bus in a parallel connection mode. The frequency conversion air conditioner and the control method of the frequency conversion air conditioner effectively solve the problems that an frequency conversion air conditioner is low in energy efficiency and high in power consumption in the prior art.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to the control method of a kind of transducer air conditioning and transducer air conditioning.
Background technology
In prior art, transducer air conditioning (low cold) generally adopts single compressor, and VFC adopts single inverter to realize.When air-conditioner runs under specific frequency, the efficiency of compressor and inverter is constant, now can only carry out raising efficiency by other parts of optimization system.When transducer air conditioning is at underload, can run at a lower frequency, because the efficiency of compressor and inverter is lower, cause the efficiency of transducer air conditioning low, power consumption is high.
Summary of the invention
The control method of a kind of transducer air conditioning and transducer air conditioning is provided in the embodiment of the present invention, low to solve the efficiency of transducer air conditioning in prior art, the problem that power consumption is high.
For achieving the above object, the invention provides a kind of transducer air conditioning, comprise frequency-changeable compressor and the inverter circuit corresponding with frequency-changeable compressor, inverter circuit comprises the first inverter and the second inverter, and the first inverter and the second inverter parallel are on dc bus.
Further, frequency-changeable compressor comprises:
First compressor, correspondingly with the first inverter is arranged, and the output of the first inverter is connected with the power input of the first compressor;
Second compressor, correspondingly with the second inverter is arranged, and the output of the second inverter is connected with the power input of the second compressor.
Further, the first inverter is equal with the capacity of the second inverter.
Further, the first compressor is identical with the rated power of the second compressor.
According to another aspect of the present invention, provide a kind of control method of transducer air conditioning, transducer air conditioning is above-mentioned transducer air conditioning, and control method comprises the following steps: the running status detecting transducer air conditioning; According to running status, to control in the first inverter and the second inverter one and work independently or work simultaneously.
Further, running status comprises air conditioner load value; Further comprising the steps of after the running status detecting transducer air conditioning: to judge whether air conditioner load value is greater than or equal to predetermined value; When air conditioner load value is greater than or equal to predetermined value, control the first inverter and the second inverter works simultaneously; When air conditioner load value is less than predetermined value, controls in the first inverter and the second inverter one and work independently.
Further, frequency-changeable compressor also comprises the first compressor and the second compressor, and the first compressor is corresponding with the first inverter to be arranged and runs simultaneously, and the second compressor is corresponding with the second inverter to be arranged and runs simultaneously.
Further, the first inverter is equal with the capacity of the second inverter.
By the first inverter and the second inverter parallel on the+Udc voltage of dc bus, the capacity of single inverter original in prior art can be divided into two equal portions, when transducer air conditioning is at underload, can run at a lower frequency, at this moment the pattern of two inverter rotation work is adopted, when taking turns to operate, each inverter can reduce its running time, decrease the high power consumption that inverter brings when working long hours, the inverter taken turns to operate can promote efficiency and the efficiency of transducer air conditioning greatly, and can also take into account reliability of operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the transducer air conditioning of the embodiment of the present invention;
Fig. 2 is the partial schematic diagram of the inverter circuit of the transducer air conditioning of the embodiment of the present invention;
Fig. 3 is the schematic diagram of the control method of the transducer air conditioning of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
Shown in Fig. 1 and Fig. 2, according to embodiments of the invention, provide a kind of transducer air conditioning, transducer air conditioning comprises frequency-changeable compressor 10 and the inverter circuit 20 corresponding with frequency-changeable compressor, inverter circuit 20 comprises the first inverter 21 and the second inverter 22, first inverter 21 and the second inverter 22 and is connected in parallel on dc bus.
First inverter 21 and the second inverter 22 are connected in parallel on+Udc the voltage of dc bus, the capacity of single inverter original in prior art can be divided into two equal portions, when transducer air conditioning is at underload, can run at a lower frequency, at this moment the pattern of two inverter rotation work is adopted, when taking turns to operate, each inverter can reduce its running time, decrease the high power consumption that inverter brings when working long hours, the inverter taken turns to operate can promote efficiency and the efficiency of transducer air conditioning greatly, and can also take into account reliability of operation.
See Fig. 2, under the pattern of two inverter rotation work, such as the first inverter (inverter1) runs 8 hours (this running time is determined according to actual tests effect), second inverter (inverter2) does not work, then switch the second inverter (inverter2) and run 8 hours, first inverter (inverter1) quits work, so not only can the efficiency of elevator system and efficiency greatly, takes into account reliability simultaneously.
Preferably, the first inverter 21 is equal with the capacity of the second inverter 22.Two inverters are the half of the capacity of original single inverter.Air-conditioner is under middle high load capacity, adopt two inverters mode of operation simultaneously, compare original single inverter, power can not reduce, and after two inverter parallels, improve the efficiency of original single inverter, the volume of each inverter is reduced further, low capacity compressor also can be adopted simultaneously to carry out further raising efficiency.
Preferably, frequency-changeable compressor comprises the first compressor 11 and the second compressor 12, first compressor 11 is corresponding with the first inverter 21 arranges, and the output of the first inverter 21 is connected with the power input of the first compressor 11.Second compressor 12 is corresponding with the second inverter 22 to be arranged, and the output of the second inverter 22 is connected with the power input of the second compressor 12.First compressor is identical with the rated power of the second compressor.
Under air-conditioner is in high load capacity (when load value is higher than predetermined value), run the first compressor and the second compressor satisfies the demands simultaneously, and adopt the pattern that the first inverter 21 and the second inverter 22 work simultaneously, make two compressors at same operation at frequencies, the stability of guarantee system, thus the efficiency of elevator system and efficiency.Be under underload (when load value is lower than predetermined value) at air-conditioner, run the first compressor and the second compressor one of them, and only run the inverter coordinated with compressor, such first compressor and the second compressor can adopt low capacity compressor, with further raising efficiency.
Can find out, when original inverter capacity is constant, the capacity of the first inverter and the second inverter is made to become the half of original single inverter in the present embodiment, the efficiency of single inverter is improve after two inverter parallels, and the volume of each inverter is reduced further, adopt two low capacity compressors (the first compressor and the second compressor) again simultaneously, higher than the efficiency of Large Copacity compressor with a series of low capacity compressor, mate with application inverter parallel technology, reach the object of further raising efficiency.
Present invention also offers a kind of embodiment of control method of transducer air conditioning, see Fig. 3, the transducer air conditioning of transducer air conditioning above-described embodiment, control method comprises the following steps:
Step S10: the running status detecting transducer air conditioning;
Step S20: according to running status, to control in the first inverter and the second inverter one and works independently or work simultaneously.
Preferably, running status comprises air conditioner load value; Further comprising the steps of after the running status detecting transducer air conditioning:
Judge whether air conditioner load value is greater than or equal to predetermined value;
When air conditioner load value is greater than or equal to predetermined value, control the first inverter and the second inverter works simultaneously;
When air conditioner load value is less than predetermined value, controls in the first inverter and the second inverter one and work independently.
Frequency-changeable compressor also comprises the first compressor and the second compressor, and the first compressor is corresponding with the first inverter to be arranged and runs simultaneously, and the second compressor is corresponding with the second inverter to be arranged and runs simultaneously.First inverter is equal with the capacity of the second inverter.
Certainly, be more than the preferred embodiment of the present invention.It should be pointed out that for those skilled in the art, under the prerequisite not departing from its general principles, can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (8)
1. a transducer air conditioning, comprise frequency-changeable compressor and the inverter circuit corresponding with described frequency-changeable compressor, it is characterized in that, described inverter circuit comprises the first inverter and the second inverter, and described first inverter and described second inverter parallel are on dc bus.
2. transducer air conditioning according to claim 1, is characterized in that, described frequency-changeable compressor comprises:
First compressor, correspondingly with described first inverter is arranged, and the output of described first inverter is connected with the power input of described first compressor;
Second compressor, correspondingly with described second inverter is arranged, and the output of described second inverter is connected with the power input of described second compressor.
3. transducer air conditioning according to claim 1, is characterized in that, described first inverter is equal with the capacity of described second inverter.
4. transducer air conditioning according to claim 2, is characterized in that, described first compressor is identical with the rated power of described second compressor.
5. a control method for transducer air conditioning, the transducer air conditioning of described transducer air conditioning according to any one of Claims 1-4, is characterized in that, described control method comprises the following steps:
Detect the running status of described transducer air conditioning;
According to described running status, to control in the first inverter and the second inverter one and work independently or work simultaneously.
6. control method according to claim 5, is characterized in that, described running status comprises air conditioner load value;
Further comprising the steps of after the running status detecting described transducer air conditioning:
Judge whether described air conditioner load value is greater than or equal to predetermined value;
When described air conditioner load value is greater than or equal to predetermined value, control described first inverter and described second inverter works simultaneously;
When described air conditioner load value is less than predetermined value, controls in described first inverter and described second inverter one and work independently.
7. control method according to claim 5, it is characterized in that, described frequency-changeable compressor also comprises the first compressor and the second compressor, described first compressor is corresponding with described first inverter to be arranged and runs simultaneously, and described second compressor is corresponding with described second inverter to be arranged and runs simultaneously.
8. control method according to claim 5, is characterized in that, described first inverter is equal with the capacity of described second inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035513.5A CN105546762A (en) | 2016-01-19 | 2016-01-19 | Frequency conversion air conditioner and control method of frequency conversion air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035513.5A CN105546762A (en) | 2016-01-19 | 2016-01-19 | Frequency conversion air conditioner and control method of frequency conversion air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105546762A true CN105546762A (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610035513.5A Withdrawn CN105546762A (en) | 2016-01-19 | 2016-01-19 | Frequency conversion air conditioner and control method of frequency conversion air conditioner |
Country Status (1)
| Country | Link |
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| CN (1) | CN105546762A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001204179A (en) * | 2000-01-17 | 2001-07-27 | Osaka Gas Co Ltd | Power supply equipment provided with inverter and method of operating the same |
| CN1969155A (en) * | 2004-04-12 | 2007-05-23 | 约克国际公司 | System and method for capacity control in a multiple compressor chiller system |
| CN1969450A (en) * | 2004-06-21 | 2007-05-23 | 东芝开利株式会社 | Air conditioner |
| CN103560746A (en) * | 2013-11-21 | 2014-02-05 | 东南大学 | Multi-parallel inverter motor speed regulating system and control method thereof |
| CN205536379U (en) * | 2016-01-19 | 2016-08-31 | 珠海格力电器股份有限公司 | Frequency -conversion air conditioner |
-
2016
- 2016-01-19 CN CN201610035513.5A patent/CN105546762A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001204179A (en) * | 2000-01-17 | 2001-07-27 | Osaka Gas Co Ltd | Power supply equipment provided with inverter and method of operating the same |
| CN1969155A (en) * | 2004-04-12 | 2007-05-23 | 约克国际公司 | System and method for capacity control in a multiple compressor chiller system |
| CN1969450A (en) * | 2004-06-21 | 2007-05-23 | 东芝开利株式会社 | Air conditioner |
| CN103560746A (en) * | 2013-11-21 | 2014-02-05 | 东南大学 | Multi-parallel inverter motor speed regulating system and control method thereof |
| CN205536379U (en) * | 2016-01-19 | 2016-08-31 | 珠海格力电器股份有限公司 | Frequency -conversion air conditioner |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160504 |
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| WW01 | Invention patent application withdrawn after publication |