CN102384538A - Three-pipe heat recovery multi-connected machine and control method thereof - Google Patents
Three-pipe heat recovery multi-connected machine and control method thereof Download PDFInfo
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- CN102384538A CN102384538A CN2011101869932A CN201110186993A CN102384538A CN 102384538 A CN102384538 A CN 102384538A CN 2011101869932 A CN2011101869932 A CN 2011101869932A CN 201110186993 A CN201110186993 A CN 201110186993A CN 102384538 A CN102384538 A CN 102384538A
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Abstract
The invention relates to a three-pipe heat recovery multi-connected machine, which comprises an outdoor machine and more than two indoor machines, wherein the outdoor machine and the indoor machines are connected by a high pressure liquid pipe, a low pressure air return pipe and a high pressure air pipe; the outdoor machine comprises a compressor, an outdoor heat exchanger, a four-way valve and a throttling device; the outdoor heat exchanger comprises a first outdoor heat exchanger and a second outdoor heat exchanger; the four-way valve comprises a first four-way valve, a second four-way valve and a third four-way valve; the throttling device comprises a first throttling device and a second throttling device; one end of the first outdoor heat exchanger is connected with a first connection pipe of the first four-way valve, and the other end of the first outdoor heat exchanger is connected with the first throttling device; one end of the second outdoor heat exchanger is connected with a first connection pipe of the second four-way valve, and the other end of the second outdoor heat exchanger is connected with one end of the second throttling device; and the other end of the first throttling device and the other end of the second throttling device are respectively connected with the high pressure liquid tube. The three-pipe heat recovery multi-connected machine provided by the invention has the characteristics of simple and reasonable structure and high energy efficiency ratio.
Description
Technical field
The present invention relates to a kind of three-pipe heating and reclaim how online and control method.
Background technology
It is the monoblock type heat exchanger that existing three-pipe heating reclaims how online outdoor heat exchanger, can only be used as condenser or evaporimeter.A kind of three-pipe heating and reclaiming air-conditioning system was disclosed on November 21st, 2007 like Chinese patent document number CN 200979258Y; Include outdoor machine system and indoor set system; Outdoor machine system includes compressor, condenser, cross valve, low pressure jar, off-premises station electric expansion valve, high-voltage tube, middle pressure pipe, low-voltage tube and is separately positioned on the high-voltage tube cut-out magnetic valve on the corresponding pipeline, middle pressure pipe cut-out magnetic valve, low-voltage tube cut-out magnetic valve; The indoor set system includes some indoor sets, threeway switching device shifter and throttle part; Wherein the refrigerant exit of compressor is connected with the A mouth of threeway switching device shifter through high-voltage tube cut-out magnetic valve and high-voltage tube respectively and is connected with condenser through cross valve; Condenser is connected with an end of indoor set through off-premises station electric expansion valve, middle pressure pipe cut-out magnetic valve, middle pressure pipe and throttle part; The B mouth of threeway switching device shifter is connected with the other end of indoor set; The C mouth of threeway switching device shifter is connected with low pressure jar and cross valve respectively through low-voltage tube and low-voltage tube cut-out magnetic valve, and the low pressure jar is connected with the refrigerant import of compressor.When outdoor heat exchanger is used as condenser; Condensation temperature that can only regulating system, when outdoor heat exchanger during as evaporimeter, evaporating temperature that can only regulating system; And therefore simultaneously the condensation temperature and the evaporating temperature of regulating system can not guarantee refrigeration, the heating effect of indoor set simultaneously.
Summary of the invention
The object of the invention aims to provide a kind of simple and reasonable, flexible operation, three-pipe heating that Energy Efficiency Ratio is high, applied widely reclaims how online and control method, to overcome weak point of the prior art.
How online a kind of three-pipe heating by this purpose design reclaim; Comprise off-premises station and the indoor set more than two; Join through high-pressure liquid tube, low pressure muffler and high-pressure air pipe between off-premises station and the indoor set; Off-premises station comprises compressor, outdoor heat converter, cross valve and throttling arrangement, and its architectural feature is that outdoor heat converter comprises outdoor first heat exchanger and outdoor second heat exchanger, and cross valve comprises first cross valve, second cross valve, the 3rd cross valve; Throttling arrangement comprises the first throttle device and second throttling arrangement
First of one end of outdoor first heat exchanger and first cross valve taken over and joined, and an end of the other end of outdoor first heat exchanger and first throttle device joins,
First of one end of outdoor second heat exchanger and second cross valve taken over and joined, and an end of the other end of outdoor second heat exchanger and second throttling arrangement joins,
The other end of the other end of first throttle device and second throttling arrangement joins with high-pressure liquid tube respectively,
Second of second adapter of first cross valve, second cross valve taken over and second adapter exhaust outlet common and compressor of the 3rd cross valve joins,
The 3rd of the 3rd adapter of first cross valve, the 3rd adapter of second cross valve and the 3rd cross valve takes over common and the low pressure muffler joins,
The return-air mouth and the low pressure muffler of compressor join.
Be provided with oil eliminator between second adapter of second adapter of said first cross valve, second adapter of second cross valve and the 3rd cross valve and the exhaust outlet of compressor.
Be provided with gas-liquid separator between the return-air mouth of said compressor and the low pressure muffler.
Common and high-pressure liquid tube joins the other end of the other end of said first throttle device and second throttling arrangement through first pipe arrangement, second pipe arrangement respectively.
A kind of three-pipe heating reclaims how online control method, it is characterized in that outdoor first heat exchanger and outdoor second heat exchanger move different state according to system load demand, and the condensation temperature and the evaporating temperature of regulating system guarantee refrigeration and heating effect simultaneously simultaneously.
Said indoor set comprises the indoor set that heats and the indoor set of refrigeration; When outdoor first heat exchanger as condenser, outdoor second heat exchanger is during as evaporimeter, the part of the refrigerant that comes out from the exhaust outlet of compressor flows to outdoor condenser; Just flow to outdoor first heat exchanger; Another part of refrigerant flows to the indoor set that heats, and flows to the indoor set of outdoor evaporimeter and refrigeration after condensed refrigerant converges again respectively, just flows to the indoor set of outdoor second heat exchanger and refrigeration; Flow to the return-air mouth of compressor after refrigerant after the evaporation converges again, the indoor set that heats and the indoor set of refrigeration are worked simultaneously.
After the present invention adopts above-mentioned technical scheme; Outdoor first heat exchanger and outdoor second heat exchanger can move different state simultaneously according to system load demand; Thereby the condensation temperature and the evaporating temperature of while regulating system; The refrigeration of assurance system and heating effect have simple and reasonable, flexible operation, high, the advantage of wide range of application of Energy Efficiency Ratio.
Description of drawings
Fig. 1 is one embodiment of the invention structural representation.
Fig. 2 is the refrigerant flow graph among the present invention.
Among the figure: 1 is first cross valve, and 2 is second cross valve, and 3 is the 3rd cross valve, and 4 is gas-liquid separator, and 5 is compressor, and 6 is oil eliminator; 7 is outdoor first heat exchanger, and 8 is outdoor second heat exchanger, and 9 is the first throttle device, and 10 is second throttling arrangement, and 11 is the first refrigerant reversing arrangement, and 12 is the second refrigerant reversing arrangement; 13 is first indoor set, and 14 is second indoor set, and 15 is second stop valve, and 16 is first stop valve, and 17 is the 3rd stop valve, and 18 is high-pressure liquid tube; 19 is the low pressure muffler, and 20 is high-pressure air pipe, and 21 is high-pressure liquid tube, and 22 is the 13 pipe arrangement, and 23 is the 3rd pipe arrangement, and 24 is the 4th pipe arrangement; 25 is the 14 pipe arrangement, and 26 is the 8th pipe arrangement, and 27 is the tenth pipe arrangement, and 28 is the 12 pipe arrangement, and 29 is the 15 pipe arrangement, and 30 is the 11 pipe arrangement; 31 is the 12 pipe arrangement, and 32 is the 8th pipe arrangement, and 33 is the 5th pipe arrangement, and 34 is the 7th pipe arrangement, and 35 is the 6th pipe arrangement, and 36 is first pipe arrangement; 37 is second pipe arrangement, and 38 is escape pipe, and 39 is blast pipe, and 40 is muffler, and 41 is the 9th pipe arrangement.Arrow among the figure is represented the trend of refrigerant.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Referring to Fig. 1; How online this three-pipe heating reclaim; Comprise off-premises station and the indoor set more than two; Join through high-pressure liquid tube 18, low pressure muffler 19 and high-pressure air pipe 20 between off-premises station and the indoor set, off-premises station comprises compressor 5, outdoor heat converter, cross valve and throttling arrangement, and outdoor heat converter comprises outdoor first heat exchanger 7 and outdoor second heat exchanger 8; Cross valve comprises first cross valve 1, second cross valve 2, the 3rd cross valve 3, and throttling arrangement comprises the first throttle device 9 and second throttling arrangement 10.
First of one end of outdoor first heat exchanger 7 and first cross valve 1 taken over C1 and joined, and an end of the other end of outdoor first heat exchanger 7 and first throttle device 9 joins.First of one end of outdoor second heat exchanger 8 and second cross valve 2 taken over C2 and joined, and an end of the other end of outdoor second heat exchanger 8 and second throttling arrangement 10 joins.The other end of the other end of first throttle device 9 and second throttling arrangement 10 joins with high-pressure liquid tube 18 respectively.In the present embodiment, the other end of the other end of first throttle device 9 and second throttling arrangement 10 respectively through first pipe arrangement 36, second pipe arrangement 37 is common and high-pressure liquid tube 18 joins.
Second of first cross valve 1 is taken over the second adapter D2 of D1, second cross valve 2 and the second adapter D3 exhaust outlet common and compressor 5 of the 3rd cross valve 3 joins.In the present embodiment, be provided with oil eliminator 6 between the exhaust outlet of second adapter D3 of second adapter D2 of second of the first cross valve 1 adapter D1, second cross valve 2 and the 3rd cross valve 3 and compressor 5.
The 3rd of first cross valve 1 is taken over the 3rd of S1, second cross valve 2 and is taken over the 3rd of S2 and the 3rd cross valve 3 and take over the common and low pressure muffler 19 of S3 and join.
The return-air mouth and the low pressure muffler 19 of compressor 5 join.In the present embodiment, be provided with gas-liquid separator 4 between the return-air mouth of compressor 5 and the low pressure muffler 19.
Above-mentioned outdoor first heat exchanger 7 can move different state according to system load demand with outdoor second heat exchanger 8, and the condensation temperature and the evaporating temperature of regulating system simultaneously guarantee the refrigeration and the heating effect of indoor set simultaneously.
The 4th adapter E1 of first cross valve 1 takes over S1 through the 3rd of the capillary and first cross valve 1 and joins, and plays by effect.Second cross valve 2 and the 3rd cross valve 3 also by this conceptual design, are seen Fig. 1.
Indoor set comprises the indoor set that heats and the indoor set of refrigeration; When outdoor first heat exchanger 7 as condenser, outdoor second heat exchanger 8 is during as evaporimeter, the part of the refrigerant that comes out from the exhaust outlet of compressor 5 flows to outdoor condenser; Just flow to outdoor first heat exchanger 7; Another part of refrigerant flows to the indoor set that heats, and flows to the indoor set of outdoor evaporimeter and refrigeration after condensed refrigerant converges again respectively, just flows to the indoor set of outdoor second heat exchanger 8 and refrigeration; Flow to the return-air mouth of compressor 5 after refrigerant after the evaporation converges again, the indoor set that heats and the indoor set of refrigeration are worked simultaneously.Specifically see the explanation of Fig. 2 for details.
Referring to Fig. 2; Outdoor first heat exchanger 7 is as condenser, and outdoor second heat exchanger 8 is used as evaporimeter, the indoor set running refrigerating pattern of refrigeration; First indoor set, 13 running refrigerating patterns just; The indoor set operation heating mode that heats, just second indoor set 14 moves heating modes, and this moment, the second adapter D1 of first cross valve 1 communicated with the first adapter C1 of first cross valve 1; First of second cross valve 2 is taken over C2 and is communicated with the 3rd adapter S2 of second cross valve 2, and second of the 3rd cross valve 3 is taken over D3 and communicated with the first adapter C3 of the 3rd cross valve 3; The refrigerant of this moment flows to as follows:
Cold through the high-pressure gaseous of compressor 5 compressions through blast pipe 39, oil eliminator 6 and escape pipe 38 thereof; The cold logical part of high-pressure gaseous flows into second of first cross valve 1 and takes over D1; Flow into outdoor first heat exchanger 7 through the first adapter C1 of first cross valve 1 again and carry out condensation, condensed liquid refrigerants flows into high-pressure liquid tubes 18 through first throttle device 9, first pipe arrangement 36; The cold logical another part of high-pressure gaseous flows into second of the 3rd cross valve 3 and takes over D3; Take over C3 through first of the 3rd cross valve 3 again; Flow into high-pressure air pipe 20, the 3rd stop valve 17, the 3rd pipe arrangement 23, the 3rd branch pipe C, the 4th pipe arrangement 24, the 6th branch pipe F, the 5th pipe arrangement 33, the second refrigerant reversing arrangement 12 and the 6th pipe arrangement 35; Second indoor set 14 that inflow heats is realized heating mode
The liquid refrigerants that is flowed out by second indoor set 14 that heats flows into high-pressure liquid tube 21 through the 7th pipe arrangement 34, the second refrigerant reversing arrangement 12, the 8th pipe arrangement 32, the 4th branch pipe D, the 8th pipe arrangement 26, the first branch pipe A; Flow into outdoor second heat exchanger 8 and evaporate heat absorption through second pipe arrangement 37, second throttling arrangement 10 through the part of outdoor first heat exchanger 7 and second indoor set, the 14 condensed liquid refrigerants that heat, the refrigerant after the evaporation flow into first of second cross valve 2 take over C2, through the 3rd of second cross valve 2 take over S2, the 9th pipe arrangement 41 gets into low pressure mufflers 19; Another part of liquid refrigerants is through the first branch pipe A, the tenth pipe arrangement 27, the first refrigerant reversing arrangement 11 and the 11 pipe arrangement 30; Flow into first indoor set 13 of refrigeration; Realize refrigeration mode; The refrigerant that is flowed out by first indoor set 13 of refrigeration flows into low pressure muffler 19 through the 12 pipe arrangement 31, the first refrigerant reversing arrangement the 11, the 12 pipe arrangement 28, the second branch pipe B, the 13 pipe arrangement 22, first stop valve 16; The refrigerant of low pressure muffler 19 gets into the air entry of compressor through the muffler 40 of gas-liquid separator 4, compressor, thereby realizes the refrigeration of whole system and heat circulation.
Claims (6)
1. how online a three-pipe heating reclaim; Comprise off-premises station and the indoor set more than two; Join through high-pressure liquid tube (18), low pressure muffler (19) and high-pressure air pipe (20) between off-premises station and the indoor set; Off-premises station comprises compressor (5), outdoor heat converter, cross valve and throttling arrangement, it is characterized in that outdoor heat converter comprises outdoor first heat exchanger (7) and outdoor second heat exchanger (8), and cross valve comprises first cross valve (1), second cross valve (2), the 3rd cross valve (3); Throttling arrangement comprises first throttle device (9) and second throttling arrangement (10)
First of one end of outdoor first heat exchanger (7) and first cross valve (1) taken over (C1) and joined, and an end of the other end of outdoor first heat exchanger (7) and first throttle device (9) joins,
First of one end of outdoor second heat exchanger (8) and second cross valve (2) taken over (C2) and joined, and an end of the other end of outdoor second heat exchanger (8) and second throttling arrangement (10) joins,
The other end of the other end of first throttle device (9) and second throttling arrangement (10) joins with high-pressure liquid tube (18) respectively,
Second of first cross valve (1) is taken over second adapter (D2) of (D1), second cross valve (2) and second adapter (D3) exhaust outlet common and compressor (5) of the 3rd cross valve (3) joins,
The 3rd of first cross valve (1) take over the 3rd of (S1), second cross valve (2) take over the 3rd of (S2) and the 3rd cross valve (3) take over (S3) jointly and low pressure muffler (19) join,
The return-air mouth of compressor (5) and low pressure muffler (19) join.
2. how online three-pipe heating according to claim 1 reclaim, and it is characterized in that second of said first cross valve (1) takes over second of (D1), second cross valve (2) and take between the exhaust outlet of second adapter (D3) and compressor (5) of (D2) and the 3rd cross valve (3) and be provided with oil eliminator (6).
3. how online three-pipe heating according to claim 2 reclaim, and it is characterized in that being provided with gas-liquid separator (4) between return-air mouth and the low pressure muffler (19) of said compressor (5).
4. reclaim according to the arbitrary described three-pipe heating of claim 1 to 3 how online, the other end that it is characterized in that said first throttle device (9) and the other end of second throttling arrangement (10) respectively through first pipe arrangement (36), second pipe arrangement (37) jointly and high-pressure liquid tube (18) join.
5. a three-pipe heating as claimed in claim 1 reclaims how online control method; It is characterized in that outdoor first heat exchanger (7) and outdoor second heat exchanger (8) are according to system load demand operation different state; The condensation temperature and the evaporating temperature of regulating system guarantee refrigeration and heating effect simultaneously simultaneously.
6. how online three-pipe heating according to claim 5 reclaim; It is characterized in that said indoor set comprises the indoor set that heats and the indoor set of refrigeration; When outdoor first heat exchanger (7) as condenser, outdoor second heat exchanger (8) is during as evaporimeter, the part of the refrigerant that comes out from the exhaust outlet of compressor (5) flows to outdoor condenser; Just flow to outdoor first heat exchanger (7); Another part of refrigerant flows to the indoor set that heats, and flows to the indoor set of outdoor evaporimeter and refrigeration after condensed refrigerant converges again respectively, just flows to the indoor set of outdoor second heat exchanger (8) and refrigeration; Flow to the return-air mouth of compressor (5) after refrigerant after the evaporation converges again, the indoor set that heats and the indoor set of refrigeration are worked simultaneously.
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