CN102109204B - Three-pipe heating recovery air conditioning system and control method thereof - Google Patents
Three-pipe heating recovery air conditioning system and control method thereof Download PDFInfo
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- CN102109204B CN102109204B CN 201110071238 CN201110071238A CN102109204B CN 102109204 B CN102109204 B CN 102109204B CN 201110071238 CN201110071238 CN 201110071238 CN 201110071238 A CN201110071238 A CN 201110071238A CN 102109204 B CN102109204 B CN 102109204B
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Abstract
The invention relates to a three-pipe heating recovery air conditioning system and a control method thereof. The three-pipe heating recovery air conditioning system comprises a compressor, a three-way valve, an outdoor heat exchanger and more than two indoor heat exchangers, wherein the indoor heat exchanger comprises a first indoor heat exchanger and a second indoor heat exchanger, the three-pipe heating recovery air conditioning system also comprises a solenoid valve, a medium-pressure stop valve, a high-pressure stop valve, a low-pressure stop valve, a first branch pipe, a second branch pipe, a third branch pipe, a fourth branch pipe, a fifth branch pipe, a sixth branch pipe, a first indoor converter and a second indoor converter, wherein a high-pressure outlet of the compressor is connected with a second interface of the three-way valve, a third interface of the three-way valve is connected with a first interface of the third branch pipe by virtue of the low-pressure stop valve, and a second interface of the third branch pipe is connected with a fifth interface of the first indoor converter. The air conditioning system provided by the invention has the characteristics that the structure is simple and reasonable, the resistance loss of the air conditioning system is less, the indoor heating effect is obviously improved, and the application range is wide.
Description
Technical field
The present invention relates to a kind of three-pipe heating and reclaiming air-conditioning system and control method thereof.
Background technology
In existing three-pipe heating and reclaiming air-conditioning system; A machine number is suitable in a machine number and the refrigeration in heating; Especially under the little load condition of long pipe arrangement; Existing control method makes the part high-temperature high-pressure refrigerant outdoor heat exchanger of flowing through, and the cold-producing medium of part HTHP flows into and heats interior machine, and the heating effect of machine is very poor in heating.
Summary of the invention
The object of the invention aims to provide that a kind of drag losses simple and reasonable, air-conditioning system is little, the indoor heating effect is obviously improved, three-pipe heating and reclaiming air-conditioning system and control method thereof applied widely, to overcome weak point of the prior art.
A kind of three-pipe heating and reclaiming air-conditioning system by this purpose design; Comprise compressor, triple valve, outdoor heat exchanger and the indoor heat exchanger more than two; Its architectural feature is that indoor heat exchanger comprises first indoor heat exchanger and second indoor heat exchanger; Three-pipe heating and reclaiming air-conditioning system also comprises magnetic valve, middle pressure cutoff valve, high-pressure stop valve, low-pressure shutoff valve, first branch pipe, second branch pipe, the 3rd branch pipe, the 4th branch pipe, the 5th branch pipe, the 6th branch pipe, the first indoor converter and the second indoor converter; Wherein, Second interface of the high-pressure outlet of compressor and triple valve joins, and first interface with the 3rd branch pipe behind the 3rd interface process low-pressure shutoff valve of triple valve joins, and second interface of the 3rd branch pipe and the 5th interface of the first indoor converter join; The 3rd interface of the 3rd branch pipe and first interface of the 4th branch pipe join, and second interface of the 4th branch pipe and the 5th interface of the second indoor converter join;
The low-pressure inlet of compressor is serially connected between the 3rd interface and low-pressure shutoff valve of triple valve; First interface of triple valve and an end of outdoor heat exchanger join; The other end of outdoor heat exchanger is successively through joining with first interface of first branch pipe behind magnetic valve and the middle pressure cutoff valve; Second interface of first branch pipe and first interface of the first indoor converter join; The 3rd interface of first branch pipe and first interface of second branch pipe join, and second interface of second branch pipe and first interface of the second indoor converter join;
One end of high-pressure stop valve is serially connected between second interface of high-pressure outlet and triple valve of compressor; First interface of the other end of high-pressure stop valve and the 5th branch pipe joins; Second interface of the 5th branch pipe and the 4th interface of the first indoor converter join; The 3rd interface of the 5th branch pipe and first interface of the 6th branch pipe join, and second interface of the 6th branch pipe and the 4th interface of the second indoor converter join;
First indoor heat exchanger is serially connected between the 3rd interface of second interface and the first indoor converter of the first indoor converter, and second indoor heat exchanger is serially connected between the 3rd interface of second interface and the second indoor converter of the second indoor converter.
A kind of control method of three-pipe heating and reclaiming air-conditioning system; It is characterized in that a refrigeration in first indoor heat exchanger and second indoor heat exchanger; When another heats, when indoor cooling load equals indoor when heating load, can be through control to triple valve and magnetic valve; Cut off the path of outdoor heat exchanger; Make the cold-producing medium of the HTHP that compressor discharges all directly get into the indoor heat exchangers that heat, then flow into the indoor heat exchanger of refrigeration again, cold-producing medium do not flow through outdoor heat exchanger and directly return-air to compressor; When indoor cooling load be not equal to indoor when heating load, through control to triple valve and magnetic valve, the path of opening chamber's external heat exchanger.
The cooling load of first indoor heat exchanger among the present invention and second indoor heat exchanger heat load when equating; Because of the cold-producing medium outdoor heat exchanger of need not flowing through; So entering into the temperature and the flow of the cold-producing medium of second indoor heat exchanger all increases; Thereby reduced the drag losses and the thermal loss of whole air-conditioning system, the heating effect of second indoor heat exchanger be improved significantly.
First indoor heat exchanger among the present invention and second indoor heat exchanger can alternately heat refrigeration; Indoor heat exchanger quantity can be greater than two; Can improve three-pipe heating and reclaiming air-conditioning system under the sub-load situation in the machine air-conditioning effect during cooling and warming simultaneously.
The present invention has drag losses simple and reasonable, air-conditioning system is little, the indoor heating effect is obviously improved, advantage of wide range of application.
Description of drawings
Fig. 1 is one embodiment of the invention structural representation.
Among the figure: 1 is compressor, and 2 is triple valve, and 3 is outdoor heat exchanger, and 4 is magnetic valve, and 5 is middle pressure cutoff valve; 6 is the first indoor converter, and 7 is first indoor set, and 8 is second indoor set, and 9 is the second indoor converter; 10 is high-pressure stop valve, and 11 is low-pressure shutoff valve, and 21 is first branch pipe, and 22 is second branch pipe; 23 is the 3rd branch pipe, and 24 is the 4th branch pipe, and 25 is the 5th branch pipe, and 26 is the 6th branch pipe.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Referring to Fig. 1, three-pipe heating and reclaiming air-conditioning system comprises outdoor machine system and indoor set system.
Outdoor machine system comprises compressor 1, triple valve 2, outdoor heat exchanger 3, magnetic valve 4, high-pressure stop valve 10, middle pressure cutoff valve 5, low-pressure shutoff valve 11; The indoor set system comprises indoor heat exchanger and the indoor converter more than two, only detailed two indoor heat exchangers and two the indoor converters of illustrating of Fig. 1.Be specially: indoor heat exchanger comprises first indoor heat exchanger 7 and second indoor heat exchanger 8, and indoor converter comprises the first indoor converter 6 and the second indoor converter 9; Three-pipe heating and reclaiming air-conditioning system also comprises first branch pipe 21, second branch pipe 22, the 3rd branch pipe 23, the 4th branch pipe 24, the 5th branch pipe 25 and the 6th branch pipe 26.
The second interface d of the high-pressure outlet a of compressor 1 and triple valve 2 joins; The 3rd interface x of triple valve 2 joins through the first interface t1 of low-pressure shutoff valve 11 backs with the 3rd branch pipe 23; Second interface t2 of the 3rd branch pipe 23 and the 5th interface e5 of the first indoor converter 6 join; The 3rd interface t3 of the 3rd branch pipe 23 and the first interface u1 of the 4th branch pipe 24 join, and second interface u2 of the 4th branch pipe 24 and the 5th interface k5 of the second indoor converter 9 join.The 3rd interface u3 sealing of the 4th branch pipe 24.
The low-pressure inlet b of compressor 1 is serially connected between the 3rd interface x and low-pressure shutoff valve 11 of triple valve 2; A first interface c of triple valve 2 and an end of outdoor heat exchanger 3 join; The other end of outdoor heat exchanger 3 joins with the first interface r1 of middle pressure cutoff valve 5 backs with first branch pipe 21 through magnetic valve 4 successively; Second interface r2 of first branch pipe 21 and the first interface e1 of the first indoor converter 6 join; The 3rd interface r3 of first branch pipe 21 and the first interface s1 of second branch pipe 22 join, and second interface s2 of second branch pipe 22 and the first interface k1 of the second indoor converter 9 join.The 3rd interface s3 sealing of second branch pipe 22.
One end of high-pressure stop valve 10 is serially connected between the second interface d of high-pressure outlet a and triple valve 2 of compressor 1; The first interface v1 of the other end of high-pressure stop valve 10 and the 5th branch pipe 25 joins; Second interface v2 of the 5th branch pipe 25 and the 4th interface e4 of the first indoor converter 6 join; The 3rd interface v3 of the 5th branch pipe 25 and the first interface w1 of the 6th branch pipe 26 join, and second interface w2 of the 6th branch pipe 26 and the 4th interface k4 of the second indoor converter 9 join.The 3rd interface w3 sealing of the 6th branch pipe 26.
First indoor heat exchanger 7 is serially connected between the 3rd interface e3 of the second interface e2 and the first indoor converter 6 of the first indoor converter 6, and second indoor heat exchanger 8 is serially connected between the 3rd interface k3 of the second interface k2 and the second indoor converter 9 of the second indoor converter 9.
Below be two according to indoor heat exchanger and be elaborated.
When first indoor heat exchanger 7 heats, during second indoor heat exchanger, 8 refrigeration, the automatically controlled plate on the off-premises station at first detects the cooling load that heats load, second indoor heat exchanger 8 of first indoor heat exchanger 7.
When the cooling load of second indoor heat exchanger 8 equal first indoor heat exchanger 7 heat load the time; Automatically controlled plate sends instruction powers on triple valve 2; Magnetic valve 4 power down, the path of cut-out outdoor heat exchanger 3 makes the cold-producing medium of the HTHP of compressor 1 discharge all directly get into first indoor heat exchangers 7 that heat; Then flow into second indoor heat exchanger 8 of refrigeration again, cold-producing medium do not flow through outdoor heat exchanger 3 and directly return-air to compressor 1.
Specifically: whole exhausts of compressor 1 flow to first indoor heat exchanger 7 through high-pressure stop valve 10; The liquid cold-producing medium of temperature during high temperature and high pressure gaseous refrigerant is cooled to through first indoor heat exchanger 7; Because magnetic valve 4 power down; The liquid cold-producing medium of middle temperature can only flow into second indoor heat exchanger 8, and the cold-producing medium that after the throttling and evaporation heat exchange, becomes the low-temp low-pressure gaseous state is got back to compressor 1.The circulation stream of cold-producing medium is: 1 → a → 10 → e4 → e3 → 7 → e2 → e1 → k1 → k2 → 8 → k3 → k5 → 11 → b → 1.
When the cooling load of second indoor heat exchanger 8 was loaded greater than heating of first indoor heat exchanger 7, automatically controlled plate sent instruction and makes triple valve 2 power down, and magnetic valve 4 powers on, the path of opening chamber's external heat exchanger 3.The exhaust part of compressor 1 flows to first indoor heat exchanger 7 through high-pressure stop valve 10; A part is through triple valve 2 flowed into chamber external heat exchangers 3; After being cooled, the cold-producing medium of this two parts HTHP gaseous state converges; The liquid cold-producing medium of middle temperature after converging flows into second indoor heat exchanger 8, and the cold-producing medium that after the throttling and evaporation heat exchange, becomes the low-temp low-pressure gaseous state is got back to compressor 1.The circulation stream of cold-producing medium is:
When the cooling load of second indoor heat exchanger 8 was loaded less than heating of first indoor heat exchanger 7, automatically controlled plate sends instruction powered on triple valve 2, and magnetic valve 4 powers on, the path of opening chamber's external heat exchanger 3.The exhaust of compressor 1 all flows to first indoor heat exchanger 7 through high-pressure stop valve 10; The liquid cold-producing medium of temperature during the cold-producing medium of HTHP gaseous state is cooled to through first indoor heat exchanger 7; Part in the cold-producing medium of middle temperature liquid state flows into second indoor heat exchanger 8; And another part process magnetic valve 4 flowed into chamber external heat exchangers 3, this two parts cold-producing medium becomes the cold-producing medium of low-temp low-pressure gaseous state and gets back to compressor 1 after the throttling and evaporation heat exchange.The circulation stream of cold-producing medium is:
Claims (2)
1. three-pipe heating and reclaiming air-conditioning system; Comprise compressor (1); Triple valve (2); Outdoor heat exchanger (3) and the indoor heat exchanger more than two; It is characterized in that indoor heat exchanger comprises first indoor heat exchanger (7) and second indoor heat exchanger (8); Three-pipe heating and reclaiming air-conditioning system also comprises magnetic valve (4); Middle pressure cutoff valve (5); High-pressure stop valve (10); Low-pressure shutoff valve (11); First branch pipe (21); Second branch pipe (22); The 3rd branch pipe (23); The 4th branch pipe (24); The 5th branch pipe (25); The 6th branch pipe (26); The first indoor converter (6) and the second indoor converter (9); Wherein
The high-pressure outlet (a) of compressor (1) joins with second interface (d) of triple valve (2); The 3rd interface (x) of triple valve (2) joins through first interface (t1) of low-pressure shutoff valve (11) back with the 3rd branch pipe (23); Second interface (t2) of the 3rd branch pipe (23) joins with the 5th interface (e5) of the first indoor converter (6); The 3rd interface (t3) of the 3rd branch pipe (23) joins with first interface (u1) of the 4th branch pipe (24), and second interface (u2) of the 4th branch pipe (24) joins with the 5th interface (k5) of the second indoor converter (9);
The low-pressure inlet (b) of compressor (1) is serially connected between the 3rd interface (x) and low-pressure shutoff valve (11) of triple valve (2); First interface (c) of triple valve (2) joins with an end of outdoor heat exchanger (3); First interface (r1) that the other end of outdoor heat exchanger (3) passes through magnetic valve (4) and middle pressure cutoff valve (5) back and first branch pipe (21) successively joins; Second interface (r2) of first branch pipe (21) joins with first interface (e1) of the first indoor converter (6); The 3rd interface (r3) of first branch pipe (21) joins with first interface (s1) of second branch pipe (22), and second interface (s2) of second branch pipe (22) joins with first interface (k1) of the second indoor converter (9);
One end of high-pressure stop valve (10) is serially connected between second interface (d) of high-pressure outlet (a) and triple valve (2) of compressor (1); First interface (v1) of the other end of high-pressure stop valve (10) and the 5th branch pipe (25) joins; Second interface (v2) of the 5th branch pipe (25) joins with the 4th interface (e4) of the first indoor converter (6); The 3rd interface (v3) of the 5th branch pipe (25) joins with first interface (w1) of the 6th branch pipe (26), and second interface (w2) of the 6th branch pipe (26) joins with the 4th interface (k4) of the second indoor converter (9);
First indoor heat exchanger (7) is serially connected between the 3rd interface (e3) of second interface (e2) and the first indoor converter (6) of the first indoor converter (6), and second indoor heat exchanger (8) is serially connected between the 3rd interface (k3) of second interface (k2) and the second indoor converter (9) of the second indoor converter (9).
2. the control method of three-pipe heating and reclaiming air-conditioning system according to claim 1; It is characterized in that a refrigeration in first indoor heat exchanger (7) and second indoor heat exchanger (8); When another heats, when indoor cooling load equals indoor when heating load, through control to triple valve (2) and magnetic valve (4); Cut off the path of outdoor heat exchanger (3); Make the cold-producing medium of the HTHP that compressor (1) discharges all directly get into the indoor heat exchangers that heat, then flow into the indoor heat exchanger of refrigeration again, cold-producing medium do not flow through outdoor heat exchanger (3) and directly return-air to compressor (1); When indoor cooling load be not equal to indoor when heating load, through the control to triple valve (2) and magnetic valve (4), the path of opening chamber's external heat exchanger (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110071238 CN102109204B (en) | 2011-03-23 | 2011-03-23 | Three-pipe heating recovery air conditioning system and control method thereof |
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| CN 201110071238 CN102109204B (en) | 2011-03-23 | 2011-03-23 | Three-pipe heating recovery air conditioning system and control method thereof |
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| CN102109204A CN102109204A (en) | 2011-06-29 |
| CN102109204B true CN102109204B (en) | 2012-10-10 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103353147B (en) * | 2013-06-28 | 2016-05-25 | 青岛海信日立空调系统有限公司 | The full heat treatment multi-online air-conditioning system of three control and humiture method for independently controlling |
| CN104344474B (en) * | 2013-08-01 | 2018-09-11 | 广东美的暖通设备有限公司 | Air-conditioning system and its control method |
| CN104197581A (en) * | 2014-09-01 | 2014-12-10 | 广东志高暖通设备股份有限公司 | Refrigerating and heating method and system of three-pipe heat recovery multiple-on-line system |
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| GB2217826A (en) * | 1988-04-25 | 1989-11-01 | Matsushita Electric Ind Co Ltd | Air conditioning systems |
| CN2901181Y (en) * | 2006-04-14 | 2007-05-16 | 广东美的电器股份有限公司 | Inner machine switch device for three tube heat recovery air conditioner system |
| CN200979258Y (en) * | 2006-04-12 | 2007-11-21 | 广东美的电器股份有限公司 | Three-pipe heating and recovery air-conditioning system |
| CN101334198A (en) * | 2007-06-28 | 2008-12-31 | 王宏丁 | Three tube-type air conditioner hot water converter |
| CN101566403A (en) * | 2009-05-27 | 2009-10-28 | 广东美的电器股份有限公司 | Multiple heat pump air-conditioning water heater |
| CN101691960A (en) * | 2009-09-30 | 2010-04-07 | 广东美的电器股份有限公司 | Three-pipe heating and reclaiming air-conditioning system |
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2011
- 2011-03-23 CN CN 201110071238 patent/CN102109204B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2217826A (en) * | 1988-04-25 | 1989-11-01 | Matsushita Electric Ind Co Ltd | Air conditioning systems |
| CN200979258Y (en) * | 2006-04-12 | 2007-11-21 | 广东美的电器股份有限公司 | Three-pipe heating and recovery air-conditioning system |
| CN2901181Y (en) * | 2006-04-14 | 2007-05-16 | 广东美的电器股份有限公司 | Inner machine switch device for three tube heat recovery air conditioner system |
| CN101334198A (en) * | 2007-06-28 | 2008-12-31 | 王宏丁 | Three tube-type air conditioner hot water converter |
| CN101566403A (en) * | 2009-05-27 | 2009-10-28 | 广东美的电器股份有限公司 | Multiple heat pump air-conditioning water heater |
| CN101691960A (en) * | 2009-09-30 | 2010-04-07 | 广东美的电器股份有限公司 | Three-pipe heating and reclaiming air-conditioning system |
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