CN101881530A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN101881530A CN101881530A CN 201010219441 CN201010219441A CN101881530A CN 101881530 A CN101881530 A CN 101881530A CN 201010219441 CN201010219441 CN 201010219441 CN 201010219441 A CN201010219441 A CN 201010219441A CN 101881530 A CN101881530 A CN 101881530A
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Abstract
The invention discloses an air conditioner and a control method thereof. The air conditioner comprises an outdoor heat exchanger, a four-way valve, a compressor, an indoor heat exchanger and a throttle valve, wherein the throttle valve is in tandem connection between the indoor heat exchanger and the outdoor heat exchanger and has two gears with different flows. The air conditioner control method comprises the following steps: presetting a first frequency F1 and a second frequency F2 of a compressor in the refrigeration cycle of the air conditioner; when the air conditioner operates, carrying out step 1: detecting the operation mode of the air conditioner and the operation frequency f of the compressor, if the refrigeration cycle is obtained, entering into step 2, and if heating cycle is obtained, entering into step 5; and carrying out step 2: comparing the operation frequency f with the first frequency F1, if the operation frequency f is more than or equal to the first frequency F1, entering into step 3, and if the operation frequency f is less than the first frequency F1, entering into step 4. The invention has the characteristics of simple and reasonable structure, flexible operation, low manufacturing cost and wide applicable range.
Description
Technical field
The present invention relates to a kind of air-conditioner, particularly a kind of air-conditioner and control method thereof.
Background technology
Convertible frequency air-conditioner can be to regulate running frequency within the specific limits along with the variation of load, to change fan-out capability.Reach fast-refrigerating during high-frequency or heat, reduce output during low frequency, to reach energy-conservation purpose.But, common convertible frequency air-conditioner, if employing capillary-compensated, then because refrigerating capillary flow and heat the fixing of capillary flow, make this common convertible frequency air-conditioner when freezing or heating, can only when certain frequency operation, Energy Efficiency Ratio reach optimum, efficiency is not an optimum state when the operation of other frequencies, and to show be exactly annual energy resource consumption efficient SEER, heat energy resource consumption in season efficient HSPF and refrigeration energy resource consumption in season efficient APF is not high.Simultaneously,, when common convertible frequency air-conditioner moves to high frequency, situations such as delivery temperature protection under a lot of operating modes, occur, make common convertible frequency air-conditioner can not keep high frequency operation, the purpose that can not reach fast-refrigerating or heat through regular meeting because the capillary flow is fixing.
For addressing these problems; the high-end convertible frequency air-conditioner in existing market top begins to adopt the electric expansion valve throttling, can improve efficiency like this, also can effectively avoid situation appearance such as delivery temperature protection; but the electronic expansion valve module is more expensive, and it is more to cause the air-conditioning cost to increase.
The constant speed air-conditioning generally adopts capillary-compensated, but because the capillary flow is fixed, situations such as exhaust protection can occur under the bad working environments of being everlasting, and is lower at the worst cold case heating capacity, and the air-conditioning blowing is cool, causes that client is discontented.
Summary of the invention
Purpose of the present invention aims to provide a kind of simple and reasonable, flexible operation, cost of manufacture is low, Energy Efficiency Ratio is high, applied widely air-conditioner and control method thereof, to overcome weak point of the prior art.
A kind of air-conditioner by this purpose design, comprise outdoor heat exchanger, cross valve, compressor, indoor heat exchanger and choke valve, choke valve is serially connected between outdoor heat exchanger and the indoor heat exchanger, and its architectural feature is that choke valve has the gear that two flows vary in size.
A kind of air-conditioner control method is characterized in that in the kind of refrigeration cycle of air-conditioner the first frequency F1 of default compressor, heats the second frequency F2 of default compressor in the circulation, when air-conditioner moves,
The first step detects the operational mode of air-conditioner and the running frequency f of compressor, if be kind of refrigeration cycle, then enters for second step; If, then entered for the 5th step for heating circulation,
In second step, compare running frequency f and first frequency F1, if running frequency f 〉=first frequency F1 then entered for the 3rd step; If running frequency f＜first frequency F1 then entered for the 4th step,
In the 3rd step, the control choke valve selects the big gear of flow to carry out conducting,
In the 4th step, the control choke valve selects the little gear of flow to carry out conducting,
In the 5th step, compare running frequency f and second frequency F2, if running frequency f 〉=second frequency F2 then entered for the 6th step; If running frequency f＜second frequency F2 then entered for the 7th step,
In the 6th step, the control choke valve selects the big gear of flow to carry out conducting,
In the 7th step, the control choke valve selects the little gear of flow to carry out conducting.
The scope of described first frequency F1 is 4～130Hz, and the scope of second frequency F2 is 4～130Hz.
The present invention is owing to adopted the choke valve with two retaining different flows, can select the different gears of choke valve to change flow according to system requirements: when low frequency, to select the less gear of flow, select the bigger gear of flow during high frequency, thereby effectively improve efficiency and the ability of operation of air conditioner in each frequency.
That the present invention has is simple and reasonable, flexible operation, cost of manufacture is low and advantage of wide range of application, can effectively improve the efficiency of air-conditioner, also can improve the maximum service ability and the low-temperature heating ability of air-conditioner simultaneously.
Description of drawings
Fig. 1 is one embodiment of the invention structural representation.
Fig. 2 is a control flow block diagram of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Referring to Fig. 1-Fig. 2, this air-conditioner comprises outdoor heat exchanger 1, cross valve 2, compressor 3, indoor heat exchanger 4 and choke valve 5, and each parts joins successively and constitutes circulation, and choke valve 5 is serially connected between outdoor heat exchanger 1 and the indoor heat exchanger 4.This choke valve 5 has the gear that two flows vary in size, and it is available to that is to say that choke valve 5 has two flow gears that vary in size.
The first frequency F1 of default compressor 1 in the kind of refrigeration cycle of air-conditioner is at the second frequency F2 that heats default compressor 1 in the circulation of air-conditioner.According to reality debugging situation, first frequency F1 and second frequency F2 all can select in the scope of 4～130Hz.
When air-conditioner moved, the first step detected the operational mode of air-conditioner and the running frequency f of compressor 1, if be kind of refrigeration cycle, then entered for second step, if, then entered for the 5th step for heating circulation,
In second step, compare running frequency f and first frequency F1, if running frequency f 〉=first frequency F1 then entered for the 3rd step; If running frequency f＜first frequency F1 then entered for the 4th step,
In the 3rd step, control choke valve 5 selects the big gear of flow to carry out conducting,
In the 4th step, control choke valve 5 selects the little gear of flow to carry out conducting,
In the 5th step, compare running frequency f and second frequency F2, if running frequency f 〉=second frequency F2 then entered for the 6th step; If running frequency f＜second frequency F2 then entered for the 7th step,
In the 6th step, control choke valve 5 selects the big gear of flow to carry out conducting,
In the 7th step, control choke valve 5 selects the little gear of flow to carry out conducting.
During the gear of the different flow of selecting at control choke valve 5, can pass through the air-conditioner Control Component, wait as triple valve or cross valve and realize.
More than be preferred implementation of the present invention, should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim institute restricted portion.
Claims (3)
1. air-conditioner, comprise outdoor heat exchanger (1), cross valve (2), compressor (3), indoor heat exchanger (4) and choke valve (5), choke valve (5) is serially connected between outdoor heat exchanger (1) and the indoor heat exchanger (4), it is characterized in that choke valve (5) has the gear that two flows vary in size.
2. air-conditioner control method according to claim 1 is characterized in that the first frequency F1 of default compressor (1) in the kind of refrigeration cycle of air-conditioner, heats the second frequency F2 of default compressor (1) in the circulation, when air-conditioner moves,
The first step detects the operational mode of air-conditioner and the running frequency f of compressor (1), if be kind of refrigeration cycle, then enters for second step; If, then entered for the 5th step for heating circulation,
In second step, compare running frequency f and first frequency F1, if running frequency f 〉=first frequency F1 then entered for the 3rd step; If running frequency f＜first frequency F1 then entered for the 4th step,
In the 3rd step, control choke valve (5) selects the big gear of flow to carry out conducting,
In the 4th step, control choke valve (5) selects the little gear of flow to carry out conducting,
In the 5th step, compare running frequency f and second frequency F2, if running frequency f 〉=second frequency F2 then entered for the 6th step; If running frequency f＜second frequency F2 then entered for the 7th step,
In the 6th step, control choke valve (5) selects the big gear of flow to carry out conducting,
In the 7th step, control choke valve (5) selects the little gear of flow to carry out conducting.
3. air-conditioner control method according to claim 2, the scope that it is characterized in that described first frequency F1 is 4～130Hz, the scope of second frequency F2 is 4～130Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010219441 CN101881530A (en) | 2010-06-30 | 2010-06-30 | Air conditioner and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010219441 CN101881530A (en) | 2010-06-30 | 2010-06-30 | Air conditioner and control method thereof |
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| CN101881530A true CN101881530A (en) | 2010-11-10 |
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| CN 201010219441 Pending CN101881530A (en) | 2010-06-30 | 2010-06-30 | Air conditioner and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148652A (en) * | 2013-03-06 | 2013-06-12 | 四川长虹电器股份有限公司 | Control method, control device and refrigeration system |
| CN104564641A (en) * | 2014-12-22 | 2015-04-29 | 广东美的制冷设备有限公司 | Fault diagnosis method, device and system of variable frequency compressor in household electrical appliance |
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| US20030121274A1 (en) * | 2000-09-14 | 2003-07-03 | Wightman David A. | Vapor compression systems, expansion devices, flow-regulating members, and vehicles, and methods for using vapor compression systems |
| CN1532472A (en) * | 2003-03-24 | 2004-09-29 | ������������ʽ���� | Refrigerant circulation device |
| CN1743772A (en) * | 2004-04-09 | 2006-03-08 | 法雷奥热力系统公司 | Expansion device for an air-conditioning system |
| JP2006097901A (en) * | 2001-10-29 | 2006-04-13 | Mitsubishi Electric Corp | Flow control valve, refrigeration air conditioner, and method of manufacturing flow control valve |
| CN2844802Y (en) * | 2005-10-28 | 2006-12-06 | 乐金电子(天津)电器有限公司 | Automatic refrigerant adjusting system of refrigerating and heating circulation system |
| CN101634472A (en) * | 2008-07-23 | 2010-01-27 | Tcl集团股份有限公司 | Variable frequency air conditioner and frequency control method thereof |
| CN201715658U (en) * | 2010-06-30 | 2011-01-19 | 广东美的电器股份有限公司 | Air conditioner |
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2010
- 2010-06-30 CN CN 201010219441 patent/CN101881530A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030121274A1 (en) * | 2000-09-14 | 2003-07-03 | Wightman David A. | Vapor compression systems, expansion devices, flow-regulating members, and vehicles, and methods for using vapor compression systems |
| JP2006097901A (en) * | 2001-10-29 | 2006-04-13 | Mitsubishi Electric Corp | Flow control valve, refrigeration air conditioner, and method of manufacturing flow control valve |
| CN1532472A (en) * | 2003-03-24 | 2004-09-29 | ������������ʽ���� | Refrigerant circulation device |
| CN1743772A (en) * | 2004-04-09 | 2006-03-08 | 法雷奥热力系统公司 | Expansion device for an air-conditioning system |
| CN2844802Y (en) * | 2005-10-28 | 2006-12-06 | 乐金电子(天津)电器有限公司 | Automatic refrigerant adjusting system of refrigerating and heating circulation system |
| CN101634472A (en) * | 2008-07-23 | 2010-01-27 | Tcl集团股份有限公司 | Variable frequency air conditioner and frequency control method thereof |
| CN201715658U (en) * | 2010-06-30 | 2011-01-19 | 广东美的电器股份有限公司 | Air conditioner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148652A (en) * | 2013-03-06 | 2013-06-12 | 四川长虹电器股份有限公司 | Control method, control device and refrigeration system |
| CN103148652B (en) * | 2013-03-06 | 2015-06-17 | 四川长虹电器股份有限公司 | Control method, control device and refrigeration system |
| CN104564641A (en) * | 2014-12-22 | 2015-04-29 | 广东美的制冷设备有限公司 | Fault diagnosis method, device and system of variable frequency compressor in household electrical appliance |
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