CN101270938A - Three coupling cascade air source heat pump air conditioner - Google Patents
Three coupling cascade air source heat pump air conditioner Download PDFInfo
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- CN101270938A CN101270938A CNA2008100549780A CN200810054978A CN101270938A CN 101270938 A CN101270938 A CN 101270938A CN A2008100549780 A CNA2008100549780 A CN A2008100549780A CN 200810054978 A CN200810054978 A CN 200810054978A CN 101270938 A CN101270938 A CN 101270938A
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Abstract
The invention provides a tee-coupled overlapped air source heat pump air conditioning, consisting of a forestage low-temperature heat pump system, a post-stage high-temperature heat pump system and an air conditioning load system, wherein the evaporative condensers of the forestage and the post-stage heat pump systems are tee-coupled evaporative condenser filled with liquid heat conductive medium; the first sub-coupling of the tee-coupled evaporative condenser is connected with the forestage low-temperature heat pump system, the third sub-coupling is connected with the post-stage high-temperature heat pump system, and the second sub-coupling is connected with the sub-coupling of the air conditioning system output condenser and the load system to form a defrosting system, a single-stage heating and cooling system. The technical proposal of the invention is that the conditioning system also consists of a feedback auxiliary heating system. The invention realizes double-stage heat pump simultaneous overlapped operation to meet the demands for efficient heating in the environment of ultra-low temperature below 20 degrees centigrade below zero; and the system also can realize the single-stage heat pump system operation for the efficient heating in the environment of low temperature above 20 degrees centigrade below zero, and the system can shift between the defrosting and the summer cooling operation. The feedback auxiliary heating circuit of the invention improves the suction temperature and the EER of the compressor of the auxiliary heat tracing system, thus improving the heating efficiency of the air conditioning system.
Description
Technical field
The present invention relates to air source heat pump air-conditioner, be specifically related to a kind of three coupling cascade air source heat pump air conditioner.
Background technology
For air source heat pump air-conditioner is effectively moved at ultra-low temperature surroundings below-20 ℃, prior art adopts the overlapping air source heat pump system, promptly is made of the two levels of thermal pumping system of overlapping through condenser/evaporator prime hot pump in low temp and back level high temperature heat pump.The cascade type heat pump system of prior art, though be used in heating operation under the ultra-low temperature surroundings, but it can't realize defrost and refrigerating operaton conversion, and under-20 ℃ to 0 ℃ outdoor low temperature environment, two-stage heat pump superposition type operational energy efficiency is more outstanding than low problem, therefore is difficult to become practical air source heat pump air-conditioner product promotion and uses.
Summary of the invention
The objective of the invention is at the problems referred to above, a kind of can be under wide temperature environment efficient heating operation is provided, promptly constitute the superposition type operation at the ultra-low temperature surroundings below-20 ℃, be converted to the single stage type operation at the low temperature environment more than-20 ℃, and can realize the three coupling cascade air source heat pump air conditioner of defrost and single-stage refrigerating operaton conversion in summer.
The technical scheme that realizes above-mentioned purpose is: a kind of three coupling cascade air source heat pump air conditioner, include by preceding stage compressor, four-way change-over valve, condenser/evaporator, the prime expansion valve, the prime hot pump in low temp system that outdoor heat exchanger is formed and by the back stage compressor, condenser, back level expansion valve, the back level high temperature heat pump system that condenser/evaporator is formed reaches by water circulating pump, the air-conditioning load system that fan coil is formed, its described condenser/evaporator is internal-filling liquid body heat-conducting medium formula three coupling condenser/evaporators, between the four-way change-over valve and expansion valve that once are connected in the prime hot pump in low temp system of its three couplings condenser/evaporator, be connected in for three times between the compressor and expansion valve of back level high temperature heat pump system, secondary is connected in the secondary and the air-conditioning load system loop of the condenser of configuration motor-driven valve.
Technical scheme of the present invention also comprises: matching with three coupled heat exchangers is equipped with the heat-conducting medium forced circulation loop of assembling circulating pump; Its air-conditioning system disposes the feedback concurrent heating system of being made up of the feedback heat exchanger that is arranged on prime compressor air suction end, the feedback heat exchanger that is arranged at air-conditioning load system loop and circulating pump, wherein, be arranged at the backfeed loop of once forming internal-filling liquid body heat-conducting medium of the heat exchanger of prime compressor air suction end with the secondary of the feedback heat exchanger that is arranged at air-conditioning load system loop and circulating pump; The internal-filling liquid body heat-conducting medium of the internal-filling liquid body heat-conducting medium of its described three coupling condenser/evaporators and feedback concurrent heating system backfeed loop is conduction oil or ethylene glycol antifreeze.
Fill in the present invention utilizes heat-conducting medium three coupling condenser/evaporators once with the overlapping of finishing hot pump in low temp and high temperature heat pump for three times, when the ultra-low temperature surroundings below-20 ℃ is used for heating, hot pump in low temp system and high temperature heat pump system constitute two-stage heat pump superposition type operation working method, finish the efficient heat supply heating of ultra-low temperature surroundings below-20 ℃.When environment temperature is in more than-20 ℃ low temperature, close back level high temperature heat pump system, constitute single-stage operation of heat pump mode by three coupling condenser/evaporator secondaries with the air-conditioning load circuit by the prime hot pump in low temp system, in order to the Energy Efficiency Ratio of raising under low temperature environment.When the needs defrost, the four-way change-over valve of prime hot pump in low temp system turns to, utilize load circuit through three the coupling condenser/evaporators secondary for the prime heat pump provides thermal source, be used for the defrost of outdoor heat exchanger.The refrigerating operaton in summer of its air-conditioning system is identical with the defrost operation, and the refrigerating circuit that promptly utilizes turning to of four-way change-over valve to cooperate three coupling condenser/evaporator secondaries and air-conditioning load system to form constitutes the refrigerating operaton in summer of single heat pump.
Three coupling condenser/evaporators of the present invention constitute heat-conducting medium forced circulation loop by the assembling circulating pump, help improving the operating efficiency of condenser/evaporator.
The present invention feeds back to the compressor air suction end of prime hot pump in low temp system by the feedback concurrent heating system of configuration with the part heat of air-conditioning load system, can improve the Energy Efficiency Ratio of heat pump winter heating.
Description of drawings
Accompanying drawing is this three coupling cascade air source heat pump air conditioner structural representation.
The specific embodiment
In conjunction with the accompanying drawings the specific embodiment of the present invention is described.
As accompanying drawing, this three coupling cascade air source heat pump air conditioner includes by preceding stage compressor 1, four-way change-over valve 2, condenser/evaporator 3, prime expansion valve 4, the prime hot pump in low temp system that outdoor heat exchanger 5 is formed and by back stage compressor 6, condenser 7, back level expansion valve 8, the back level high temperature heat pump system that condenser/evaporator 3 is formed reaches by water circulating pump 9, the air-conditioning load system that fan coil 10 is formed, its described condenser/evaporator 3 is internal-filling liquid body heat-conducting medium formula three coupling condenser/evaporators, three coupling condenser/evaporators once be connected in the prime hot pump in low temp system, be connected in back level high temperature heat pump system for three times, the secondary of secondary and condenser 7 and load system is connected and the motor-driven valve 11 by disposing, 12 form the defrost loop, single-stage heating and refrigerating circuit in summer.The heat-conducting medium forced circulation loop that is made of circulating pump 13 with three coupling condenser/evaporators 3 phase configuration is to improve the heat exchange efficiency of three coupling condenser/evaporators.Its air-conditioning system disposes the feedback concurrent heating system of being made up of feedback heat exchanger 14, the feedback heat exchanger 15 that is arranged at air-conditioning load system loop and the circulating pump 16 of stage compressor 1 suction end before being arranged on, wherein, feedback heat exchanger 14 once assists hot loop with the secondary of feedback heat exchanger 15 and the feedback of circulating pump 16 composition internal-filling liquid body heat-conducting mediums.Fill in its described three coupling condenser/evaporators 3 heat-conducting medium and described feedback concurrent heating system loop in to fill heat-conducting medium can be conduction oil or for ethylene glycol antifreeze.
Claims (5)
1, a kind of three coupling cascade air source heat pump air conditioner, include by preceding stage compressor (1), four-way change-over valve (2), condenser/evaporator (3), prime expansion valve (4), the prime hot pump in low temp system that outdoor heat exchanger (5) is formed and by back stage compressor (6), condenser (7), back level expansion valve (8), the back level high temperature heat pump system that condenser/evaporator (3) is formed reaches by water circulating pump (9), the air-conditioning load system that fan coil (10) is formed, it is characterized in that: described condenser/evaporator (3) is internal-filling liquid body heat-conducting medium formula three coupling condenser/evaporators, between the four-way change-over valve that once is connected in the prime hot pump in low temp system (2) and expansion valve (4) of its three couplings condenser/evaporator, be connected in for three times between the compressor (6) and expansion valve (8) of back level high temperature heat pump system, secondary is connected in configuration motor-driven valve (11), the secondary of condenser (12) (7) and air-conditioning load system loop.
2, three coupling cascade air source heat pump air conditioner according to claim 1 is characterized in that: matching with three coupling condenser/evaporators (3) is equipped with the heat-conducting medium forced circulation loop of assembling circulating pump (13).
3, three coupling cascade air source heat pump air conditioner according to claim 1, it is characterized in that: air-conditioning system disposes the feedback concurrent heating system of being made up of the feedback heat exchanger (14) that is arranged on preceding stage compressor (1) suction end, the feedback heat exchanger (15) that is arranged at air-conditioning load system loop and circulating pump (16), wherein feeds back the backfeed loop of once forming internal-filling liquid body heat-conducting medium with secondary that feeds back heat exchanger (15) and circulating pump (16) of heat exchanger (14).
4, three coupling cascade air source heat pump air conditioner according to claim 1 is characterized in that: the internal-filling liquid body heat-conducting medium of described three coupling condenser/evaporators (3) is conduction oil or ethylene glycol antifreeze.
5, three coupling cascade air source heat pump air conditioner according to claim 3 is characterized in that: the internal-filling liquid body heat-conducting medium of described backfeed loop is conduction oil or ethylene glycol antifreeze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100549780A CN101270938B (en) | 2008-05-16 | 2008-05-16 | Three coupling cascade air source heat pump air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100549780A CN101270938B (en) | 2008-05-16 | 2008-05-16 | Three coupling cascade air source heat pump air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101270938A true CN101270938A (en) | 2008-09-24 |
| CN101270938B CN101270938B (en) | 2012-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100549780A Expired - Fee Related CN101270938B (en) | 2008-05-16 | 2008-05-16 | Three coupling cascade air source heat pump air conditioner |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619904B (en) * | 2009-08-02 | 2013-04-10 | 山东美琳达再生能源开发有限公司 | Two-stage heating high temperature heat pump device |
| CN103105026A (en) * | 2011-11-14 | 2013-05-15 | 松下电器产业株式会社 | Refrigeration cycle apparatus and hot water producing apparatus |
| EP2333457A3 (en) * | 2009-12-11 | 2015-06-24 | LG ELectronics INC. | Water circulation apparatus associated with refrigerant system |
| CN104833087A (en) * | 2015-04-30 | 2015-08-12 | 南京理工大学 | Cascading middle and high-temperature air source heat pump hot water machine set |
| CN105299955A (en) * | 2015-11-30 | 2016-02-03 | 王全龄 | Heat pump system for automatically optimizing evaporation temperature of compressor |
| CN107270536A (en) * | 2017-07-24 | 2017-10-20 | 浙江正理生能科技有限公司 | A kind of cascade type heat pump |
| CN107477899A (en) * | 2017-09-21 | 2017-12-15 | 无锡职业技术学院 | A kind of water route coupling cascade formula low-temperature air-cooling heat pump system |
| CN109813005A (en) * | 2019-01-04 | 2019-05-28 | 北京四季通能源科技有限公司 | A kind of Two-stage Heat Pump System and its control method |
| CN112594954A (en) * | 2021-01-18 | 2021-04-02 | 北京天意能科技有限公司 | Full-working-condition double-cold-storage warm air conditioning system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1786622A (en) * | 2005-10-27 | 2006-06-14 | 王锦胜 | Multi-step combined energy exchanger and method of energy exchanging |
| CN1995871A (en) * | 2006-12-25 | 2007-07-11 | 杨贻方 | Multi-stage high temperature heat pump |
| CN201237399Y (en) * | 2008-05-16 | 2009-05-13 | 王全龄 | Three coupling cascade air source heat pump air conditioner |
-
2008
- 2008-05-16 CN CN2008100549780A patent/CN101270938B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101619904B (en) * | 2009-08-02 | 2013-04-10 | 山东美琳达再生能源开发有限公司 | Two-stage heating high temperature heat pump device |
| EP2333457A3 (en) * | 2009-12-11 | 2015-06-24 | LG ELectronics INC. | Water circulation apparatus associated with refrigerant system |
| CN103105026A (en) * | 2011-11-14 | 2013-05-15 | 松下电器产业株式会社 | Refrigeration cycle apparatus and hot water producing apparatus |
| CN104833087A (en) * | 2015-04-30 | 2015-08-12 | 南京理工大学 | Cascading middle and high-temperature air source heat pump hot water machine set |
| CN105299955A (en) * | 2015-11-30 | 2016-02-03 | 王全龄 | Heat pump system for automatically optimizing evaporation temperature of compressor |
| CN107270536A (en) * | 2017-07-24 | 2017-10-20 | 浙江正理生能科技有限公司 | A kind of cascade type heat pump |
| CN107477899A (en) * | 2017-09-21 | 2017-12-15 | 无锡职业技术学院 | A kind of water route coupling cascade formula low-temperature air-cooling heat pump system |
| CN107477899B (en) * | 2017-09-21 | 2023-10-13 | 无锡职业技术学院 | Waterway coupling overlapping type low-temperature air-cooled heat pump system |
| CN109813005A (en) * | 2019-01-04 | 2019-05-28 | 北京四季通能源科技有限公司 | A kind of Two-stage Heat Pump System and its control method |
| CN109813005B (en) * | 2019-01-04 | 2023-09-22 | 北京四季通能源科技有限公司 | Double-stage heat pump system and control method thereof |
| CN112594954A (en) * | 2021-01-18 | 2021-04-02 | 北京天意能科技有限公司 | Full-working-condition double-cold-storage warm air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101270938B (en) | 2012-06-06 |
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Granted publication date: 20120606 Termination date: 20180516 |