CN103867443A - Variable capacity control method of single-cylinder frequency conversion compressor - Google Patents
Variable capacity control method of single-cylinder frequency conversion compressor Download PDFInfo
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- CN103867443A CN103867443A CN201210536531.3A CN201210536531A CN103867443A CN 103867443 A CN103867443 A CN 103867443A CN 201210536531 A CN201210536531 A CN 201210536531A CN 103867443 A CN103867443 A CN 103867443A
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Abstract
The present invention discloses a variable capacity control method of a single-cylinder frequency conversion compressor. According to the method, a single-cylinder frequency conversion compressor adopts gas suction by-pass, wherein the side of the compressor gas cylinder is provided with a plurality of by-pass holes, communication/disconnection of the plurality of the by-pass holes and the gas cylinder gas suction chamber and communication/disconnection of the plurality of the by-pass holes and the gas cylinder gas exhaust chamber are controlled through an electromagnetic valve, the compressor performs variable capacity operation when the plurality of the by-pass holes are communicated with the gas cylinder gas suction chamber, and the compressor performs full capacity operation when the plurality of the by-pass holes are communicated with the gas cylinder gas exhaust chamber. With the method, the low refrigerating capacity/heating capacity is achieved within the allowed single-cylinder frequency conversion compressor operation frequency range, the capacity change range of the compressor is increased, and the stable and reliable operation of the compressor under a plurality of working conditions is ensured.
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 realize the capacity regulating of compressor by controlling the mode of motor speed, compresser cylinder unloading or multi-connected machine, 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 hour, the reliability of the lower rear compressor of operating frequency of motor is difficult to meet the demands especially required refrigerating capacity/heating capacity; 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 has improved system cost and economic not.Thereby traditional compressor capacity control mode exists certain defect, limit the reliable and stable operation of compressor under various working.So be necessary to seek a kind of new varying capacity control mode, not limited by list/bis-cylinder, and can realize less refrigerating/heating ability.
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, in the scope of utilizing this method to allow at single cylinder frequency-changeable compressor operating frequency, realize less refrigerating capacity/heating capacity, increase the scope that compressor capacity changes, guaranteed 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, the operation of compressor variable capacity, when some by-pass holes are communicated with inblock cylinder air cavity, the operation of compressor full capacity.
Further, some by-pass hole center lines are by the center of compresser cylinder, and along compressor operation direction, the blade groove center line angle 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, maximum angle θ
n210 ° of <.
Because the varying capacity controlling method of single cylinder frequency-changeable compressor of the present invention has adopted technique scheme, be that 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, the operation of compressor variable capacity, when some by-pass holes are communicated with inblock cylinder air cavity, the operation of compressor full capacity.In the scope that this method is allowed at single cylinder frequency-changeable compressor operating frequency, realize less refrigerating capacity/heating capacity, increase the scope that compressor capacity changes, guaranteed 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 that adopts this method front and back compressor variable capacity.
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 are the break-make with cylinder air aspiration cavity 4 and exhaust cavity 5 by solenoid valve 3 controls, when some by-pass holes are communicated with cylinder air aspiration cavity, the operation of compressor variable capacity, when some by-pass holes are communicated with inblock cylinder air cavity, the operation of compressor full capacity.When by-pass hole is connected with solenoid valve is actual, when by-pass hole is while being single, by-pass hole can directly be connected with solenoid valve one end, when by-pass hole is while being multiple, can adopt one or more tee unions to be connected between multiple by-pass holes and 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, the blade groove 11 center line angles on some by-pass hole 2 center lines and compresser cylinder 1 are respectively θ
1, θ
2θ
n-1, θ
n, and θ
n> θ
n-1> ... > θ
2> θ
1, maximum angle θ
n210 ° of <.According to the working principle of compressor, near compressor crank shaft corner reaches 210 ° time, compressor starts exhaust, if by-pass hole and blade groove center line angle exceed after 210 °, the outlet valve of compressor cylinder cover is opened, and now compressor cannot compress gas, and 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, realize the varying capacity control of compressor, wherein the position of by-pass hole is specifically set according to varying capacity size, in the time that solenoid valve must conduct, some by-pass holes switch to air aspiration cavity and are communicated with, compressor compresses starting point postpones, and discharge capacity reduces; In the time of solenoid valve dead electricity, some by-pass holes switch to exhaust cavity and are communicated with, and reach the normal exhaust amount of compressor.Thereby increase the scope that compressor capacity changes, in the situation that not reducing compressor electric motor rotating speed, made compressor can obtain less refrigerating capacity/heating capacity, guaranteed the reliable and stable operation of compressor.
As shown in Figure 4, take the single cylinder frequency-changeable compressor of 7.9cc discharge capacity as example, be illustrated as and adopt after this method, the full capacity operation curve 6 of compressor and the comparison of varying capacity operation curve 7, adopting after this method, can realize discharge capacity 7.8cc(100% discharge capacity) to discharge capacity 4.9cc(50% discharge capacity) between switching, can find out, under same rotating speed, capacity switches to after 4.9cc discharge capacity, and compressor can obtain lower refrigerating capacity/heating capacity.
As the required refrigerating capacity Q≤Q1 of compressor, below rotating speed need to being controlled to A point for the normal capacity compressors of 7.8cc, just can meet the demands, but A point rotating speed is lower, reliability requirement for compressor is higher, make solenoid valve obtain electric connection air aspiration cavity and some by-pass holes by controller, switch to 4.9cc discharge capacity by compressor capacity, running speed just can obtain required refrigerating capacity below B point, and after rotating speed raising, compressor performance and life-span all can significantly improve like this; In the time of the required refrigerating capacity Q >=Q2 of compressor, make solenoid valve dead electricity switch to exhaust cavity by controller and be communicated with some by-pass holes, 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 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, the operation of compressor variable capacity, when some by-pass holes are communicated with inblock cylinder air cavity, the operation of compressor full capacity.
2. the varying capacity controlling method of single cylinder frequency-changeable compressor according to claim 1, it is characterized in that: some by-pass hole center lines are by the center of compresser cylinder, along compressor operation direction, the blade groove center line angle 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, maximum angle θ
n210 ° of <.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103867443A true CN103867443A (en) | 2014-06-18 |
| CN103867443B 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443387A (en) * | 2014-08-28 | 2016-03-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Bypass mechanism and compressor |
| CN109269039A (en) * | 2018-08-06 | 2019-01-25 | 珠海格力电器股份有限公司 | Control method of compressor and refrigerant circulating system |
Citations (6)
| 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 |
| 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 |
-
2012
- 2012-12-13 CN CN201210536531.3A patent/CN103867443B/en active Active
Patent Citations (6)
| 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 |
| CN1993552A (en) * | 2004-08-06 | 2007-07-04 | Lg电子株式会社 | Capacity variable type rotary compressor and driving method thereof |
| KR20060065801A (en) * | 2004-12-10 | 2006-06-14 | 엘지전자 주식회사 | Air conditioner |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443387A (en) * | 2014-08-28 | 2016-03-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Bypass mechanism and compressor |
| 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 |
| CN109269039A (en) * | 2018-08-06 | 2019-01-25 | 珠海格力电器股份有限公司 | Control method of compressor and refrigerant circulating system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103867443B (en) | 2016-04-27 |
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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 |