CN103867443B - The varying capacity controlling method of single cylinder frequency-changeable compressor - Google Patents
The varying capacity controlling method of single cylinder frequency-changeable compressor Download PDFInfo
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- CN103867443B CN103867443B CN201210536531.3A CN201210536531A CN103867443B CN 103867443 B CN103867443 B CN 103867443B CN 201210536531 A CN201210536531 A CN 201210536531A CN 103867443 B CN103867443 B CN 103867443B
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Abstract
The invention discloses a kind of varying capacity controlling method of single cylinder frequency-changeable compressor, namely this method is that single cylinder frequency-changeable compressor adopts air-breathing bypass, compresser cylinder side arranges some by-pass holes, some by-pass holes are by the break-make of electromagnetic valve and cylinder air aspiration cavity and exhaust cavity, when some by-pass holes are communicated with cylinder air aspiration cavity, compressor variable capacity runs, and when some by-pass holes are communicated with inblock cylinder air cavity, compressor full capacity is run.This method realizes less refrigerating capacity/heating capacity in the scope that single cylinder frequency-changeable compressor operating frequency is allowed, increases the scope of compressor capacity change, ensure that the reliable and stable operation of compressor under various working.
Description
Technical field
The present invention relates to a kind of varying capacity controlling method of single cylinder frequency-changeable compressor.
Background technique
Existing capacity controlled compressor, mostly by controlling motor speed, compresser cylinder unloads or the mode of multi-connected machine realizes the capacity regulating of compressor, wherein adopt motor speed control mode as frequency-changeable compressor, its motor speed is adjustable, but be subject to the restriction of frequency variator and the reliability of compressor own, the volume change of compressor realizes within the specific limits, and when especially required refrigerating capacity/heating capacity is less, the reliability of the lower rear compressor of operating frequency of motor is difficult to meet the demands; The controlled range of capacity of cylinder unloading manner compressor is less, and is necessary for double-cylinder structure and just can realizes; Multi-connected machine mode improves system cost and economical not.There is certain defect in thus traditional compressor capacity control mode, limits the reliable and stable operation of compressor under various working.So be necessary to seek a kind of new varying capacity control mode, do not limit by list/bis-cylinder, and less refrigerating/heating ability can be realized.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of varying capacity controlling method of single cylinder frequency-changeable compressor, this method is utilized to realize less refrigerating capacity/heating capacity in the scope that single cylinder frequency-changeable compressor operating frequency is allowed, increase the scope of compressor capacity change, ensure that the reliable and stable operation of compressor under various working.
For solving the problems of the technologies described above, the varying capacity controlling method of single cylinder frequency-changeable compressor of the present invention is that single cylinder frequency-changeable compressor adopts air-breathing bypass, compresser cylinder side arranges some by-pass holes, some by-pass holes are by the break-make of electromagnetic valve and cylinder air aspiration cavity and exhaust cavity, when some by-pass holes are communicated with cylinder air aspiration cavity, compressor variable capacity runs, and when some by-pass holes are communicated with inblock cylinder air cavity, compressor full capacity is run.
Further, some by-pass hole center lines are by the center of compresser cylinder, and along compressor operation direction, the blade groove centerlines on some by-pass hole center lines and compresser cylinder is respectively θ
1, θ
2θ
n-1, θ
n, and θ
n> θ
n-1> ... > θ
2> θ
1, then maximum angle θ
n< 210 °.
Because the varying capacity controlling method of single cylinder frequency-changeable compressor of the present invention have employed technique scheme, namely this method is that single cylinder frequency-changeable compressor adopts air-breathing bypass, compresser cylinder side arranges some by-pass holes, some by-pass holes are by the break-make of electromagnetic valve and cylinder air aspiration cavity and exhaust cavity, when some by-pass holes are communicated with cylinder air aspiration cavity, compressor variable capacity runs, and when some by-pass holes are communicated with inblock cylinder air cavity, compressor full capacity is run.This method realizes less refrigerating capacity/heating capacity in the scope that single cylinder frequency-changeable compressor operating frequency is allowed, increases the scope of compressor capacity change, ensure that the reliable and stable operation of compressor under various working.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is described in further detail:
Fig. 1 is the schematic diagram of the varying capacity controlling method of single cylinder frequency-changeable compressor of the present invention;
Fig. 2 is the schematic diagram of solenoid valve and air aspiration cavity, exhaust cavity and some by-pass hole break-makes in this method;
Fig. 3 is some by-pass hole position views;
Fig. 4 is the curve synoptic diagram adopting compressor variable capacity before and after this method.
Embodiment
As depicted in figs. 1 and 2, the varying capacity controlling method of single cylinder frequency-changeable compressor of the present invention is that single cylinder frequency-changeable compressor adopts air-breathing bypass, compresser cylinder 1 side arranges some by-pass holes 2, some by-pass holes 2 control the break-make with cylinder air aspiration cavity 4 and exhaust cavity 5 by solenoid valve 3, when some by-pass holes are communicated with cylinder air aspiration cavity, compressor variable capacity runs, and when some by-pass holes are communicated with inblock cylinder air cavity, compressor full capacity is run.When by-pass hole is connected with solenoid valve is actual, when by-pass hole is single, by-pass hole can directly be connected with solenoid valve one end, and when by-pass hole is multiple, multiple by-pass hole is connected with adopting one or more tee union between solenoid valve.
Further, as shown in Figure 3, some by-pass hole 2 center lines are by the center of compresser cylinder 1, and along compressor operation direction, blade groove 11 centerlines on some by-pass hole 2 center lines and compresser cylinder 1 is respectively θ
1, θ
2θ
n-1, θ
n, and θ
n> θ
n-1> ... > θ
2> θ
1, then maximum angle θ
n< 210 °.According to the working principle of compressor, when compressor crank shaft corner reaches near 210 °, compressor starts is vented, if by-pass hole and blade groove centerlines more than 210 ° after, the outlet valve of compressor cylinder cover is opened, and now compressor cannot compress gas, and namely compressor only has air-breathing, exhaust, cannot normally work, therefore θ n need be less than 210 °.
This method is by the break-make of electromagnetic valve by-pass hole and air aspiration cavity, exhaust cavity, the varying capacity realizing compressor controls, wherein the position of by-pass hole specifically sets according to varying capacity size, when solenoid valve must conduct, some by-pass holes switch to and are communicated with air aspiration cavity, compressor compresses starting point postpones, and discharge capacity reduces; When solenoid valve dead electricity, some by-pass holes switch to and are communicated with exhaust cavity, reach the normal exhaust amount of compressor.Thus add the scope of compressor capacity change, when not reducing compressor electric motor rotating speed, making compressor can obtain less refrigerating capacity/heating capacity, ensure that the reliable and stable operation of compressor.
As shown in Figure 4, for the single cylinder frequency-changeable compressor of 7.9cc discharge capacity, be illustrated as after adopting this method, the full capacity operation curve 6 of compressor and the comparison of varying capacity operation curve 7, employing this method after, discharge capacity 7.8cc(100% discharge capacity can be realized) to discharge capacity 4.9cc(50% discharge capacity) between switching, can find out, under same rotating speed, after capacity switches to 4.9cc discharge capacity, compressor can obtain lower refrigerating capacity/heating capacity.
Refrigerating capacity Q≤Q1 needed for the compressor, the normal capacity compressors of 7.8cc is needed to be controlled by rotating speed just can meet the demands below A point, but A point rotating speed is lower, reliability requirement for compressor is higher, solenoid valve is made to obtain electric connection air aspiration cavity and some by-pass holes by controller, switch to 4.9cc discharge capacity by compressor capacity, then running speed just can obtain required refrigerating capacity below B point, and after such rotating speed improves, compressor performance and life-span all can significantly improve; As refrigerating capacity Q needed for compressor >=Q2, make solenoid valve dead electricity switch to exhaust cavity by controller and be communicated with some by-pass holes, then compressor capacity switches to the normal discharge capacity of 7.9cc, and compressor reaches operates at full capacity.
Claims (2)
1. the varying capacity controlling method of a single cylinder frequency-changeable compressor, it is characterized in that: single cylinder frequency-changeable compressor adopts air-breathing bypass, compresser cylinder side arranges multiple by-pass hole, multiple by-pass hole is by the break-make of electromagnetic valve and cylinder air aspiration cavity and exhaust cavity, when multiple by-pass hole is communicated with cylinder air aspiration cavity, compressor variable capacity runs, and when multiple by-pass hole is communicated with inblock cylinder air cavity, compressor full capacity is run.
2. the varying capacity controlling method of single cylinder frequency-changeable compressor according to claim 1, it is characterized in that: multiple by-pass hole center line is by the center of compresser cylinder, along compressor operation direction, the blade groove centerlines on multiple by-pass hole center line and compresser cylinder is respectively θ
1, θ
2... θ
n-1, θ
n, and θ
n﹥ θ
n-1﹥ ... ﹥ θ
2﹥ θ
1, then maximum angle θ
n﹤ 210 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536531.3A CN103867443B (en) | 2012-12-13 | 2012-12-13 | The varying capacity controlling method of single cylinder frequency-changeable compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210536531.3A CN103867443B (en) | 2012-12-13 | 2012-12-13 | The varying capacity controlling method of single cylinder frequency-changeable compressor |
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| Publication Number | Publication Date |
|---|---|
| CN103867443A CN103867443A (en) | 2014-06-18 |
| CN103867443B true CN103867443B (en) | 2016-04-27 |
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| CN201210536531.3A Active CN103867443B (en) | 2012-12-13 | 2012-12-13 | The varying capacity controlling method of single cylinder frequency-changeable compressor |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443387B (en) * | 2014-08-28 | 2017-03-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Bypass mechanism and compressor |
| CN109269039B (en) * | 2018-08-06 | 2020-11-10 | 珠海格力电器股份有限公司 | Control method of compressor and refrigerant circulating system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1993552A (en) * | 2004-08-06 | 2007-07-04 | Lg电子株式会社 | Capacity variable type rotary compressor and driving method thereof |
| CN202117928U (en) * | 2011-06-14 | 2012-01-18 | 广东美芝制冷设备有限公司 | Capacitance variable type rotary compressor |
| CN202441601U (en) * | 2012-02-17 | 2012-09-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Variable capacity compressor and air conditioner as well as heat pump water heater with the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55112895A (en) * | 1980-02-14 | 1980-09-01 | Daikin Ind Ltd | Refrigerating apparatus |
| JPH02136589A (en) * | 1988-11-14 | 1990-05-25 | Sanyo Electric Co Ltd | Capacity controller for compressor |
| KR20060065801A (en) * | 2004-12-10 | 2006-06-14 | 엘지전자 주식회사 | Air conditioner |
-
2012
- 2012-12-13 CN CN201210536531.3A patent/CN103867443B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1993552A (en) * | 2004-08-06 | 2007-07-04 | Lg电子株式会社 | Capacity variable type rotary compressor and driving method thereof |
| CN202117928U (en) * | 2011-06-14 | 2012-01-18 | 广东美芝制冷设备有限公司 | Capacitance variable type rotary compressor |
| CN202441601U (en) * | 2012-02-17 | 2012-09-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Variable capacity compressor and air conditioner as well as heat pump water heater with the same |
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|---|---|
| CN103867443A (en) | 2014-06-18 |
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Address after: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 1051 Patentee after: Shanghai Haili Electrical Appliance Co. Ltd. Address before: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 1051 Patentee before: Rili Electric Appliance Co., Ltd., Shanghai |