CN203501363U - Double-effect heat pump air conditioning unit - Google Patents

Double-effect heat pump air conditioning unit Download PDF

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Publication number
CN203501363U
CN203501363U CN201320631610.2U CN201320631610U CN203501363U CN 203501363 U CN203501363 U CN 203501363U CN 201320631610 U CN201320631610 U CN 201320631610U CN 203501363 U CN203501363 U CN 203501363U
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China
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heat exchanger
source side
air
heat
heat source
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Expired - Lifetime
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CN201320631610.2U
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Chinese (zh)
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吕铁成
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Central South Architectural Design Institute Co Ltd
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Individual
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Abstract

A double-effect heat pump air conditioning unit comprises a compressor, a four-way valve, a heat source side air cooling heat exchanger, a heat source side water cooling heat exchanger, an indoor side heat exchanger and a throttling device. After the outlet of the compressor is connected with the heat source side air cooling heat exchanger, the heat source side water cooling heat exchanger, the throttling device and the indoor side heat exchanger in sequence through the four-way valve, the heat source side air cooling heat exchanger, the heat source side water cooling heat exchanger, the throttling device and the indoor side heat exchanger are connected with the compressor through the four-way valve. The heat source side water cooling heat exchanger is connected with a cooling water pump and a cooling tower in series to form a loop. The indoor side heat exchanger is connected with a chilled water pump and the tail end of an air conditioner in series to form a loop. Compared with a traditional air cooled heat pump air conditioning unit, the double-effect heat pump air conditioning unit has the advantages that the summer refrigerating efficiency is improved by 36% to 50%, and the double-effect heat pump air conditioning unit has the obvious energy-saving effect; the heat source side water cooling heat exchanger and the heat source side heat cooling heat exchanger are connected in series, a switching valve does not need to be arranged, and a unit refrigerant pipeline is simpler in pipeline and higher in reliability.

Description

Double-effect heat pump air-conditioning unit
Technical field
The utility model relates to central air-conditioning system field, is specially adapted to China Xia Redong cryogenic region as the double-effect heat pump air-conditioning unit of central air-conditioning system Cooling and Heat Source.
Background technology
Air-cooled heat-pump air-conditioner group is central air-conditioning system main frame, is called again air conditioner with air-source heat pump group, and for central air-conditioning system provides chilled water refrigeration, provide hot water heating winter summer.Its chief component is compressor, heat source side air cooling heat exchanger, indoor heat exchanger, throttling arrangement.Summer, while freezing, unit was discharged heat by heat source side air cooling heat exchanger to outdoor air, by indoor heat exchanger from chilled water draw heat, thereby reach refrigerating function.During winter heating, unit, is discharged heat by indoor heat exchanger to hot water, thereby is reached heat supply function from outdoor air draw heat by heat source side air cooling heat exchanger.That existing air conditioner with air-source heat pump group has is energy-conservation, refrigerating and heating simultaneously, without advantages such as cooling water and boilers, be specially adapted to China Xia Redong cryogenic region as the Cooling and Heat Source of central air-conditioning system.Along with the progress of technology, the trend of the oriented cold district expansion of range of application at present.But because heat source side air cooling heat exchanger heat exchange efficiency is low, air-cooled heat-pump air-conditioner group refrigerating efficiency in summer (refrigerating capacity and power consumption ratio) is lower, represent that at present the product refrigerating efficiency in summer of energy-saving threshold is 3.0~3.2, therefore, conventionally only in small and medium construction, use.
Recovery type heat air-cooled heat-pump air-conditioner group is central air-conditioning system main frame, is again to concentrate health hot water supply system main frame, and winter or summer all can be used as air-cooled heat-pump air-conditioner group and uses, or while using as air-conditioning unit and produce health hot water.Compare with air-cooled heat-pump air-conditioner group, its chief component has increased heat recovering heat exchanger exactly.The heat recovering heat exchanger use of connecting with indoor heat exchanger in winter, the heat recovering heat exchanger use of connecting with heat source side air cooling heat exchanger in summer.In the time of need to producing health hot water, unit is discharged heat to heat recovering heat exchanger.When this technology has the every advantage of air-cooled heat-pump air-conditioner group, can also provide health hot water.Yet it is only suitable for arranging in Xia Redong cryogenic region the building of central air conditioning and concentrated health hot water supply system, be applicable to a small amount of this type unit of configuration and Air-Cooled Heat Pump Unit and support the use, the scope of application is subject to both imperfect restrictions of Air-Cooled Heat Pump Unit.
Application number is that 200820031758.1 patent discloses a kind of water-cooled/Wind-cooling type integrated heat pump unit, its connected mode is: compressor outlet connects refrigerant reversal valve, evaporimeter, expansion valve, air-cooled condenser, gas-liquid separator successively to suction port of compressor, in addition, be also provided with water-cooled condenser.Compare with air-cooled heat-pump air-conditioner group, this utility model has increased water-cooled condenser, water-cooled condenser adopts parallel form to be connected with air-cooled condenser, by refrigerant reversal valve switching water-cooled condenser or air-cooled condenser, work, both guaranteed heat pump heat supply in winter, solve again the low problem of wet monsoon cold-heat pump unit eer, reached the object of saving the energy.Yet the water-cooled condenser of this utility model and air-cooled condenser adopt and are connected in parallel, and summer in winter, refrigerant pipe pipeline was inconsistent, and need to change by valve, had increased the complexity of refrigerant pipe system, had reduced the reliability of system.
Summary of the invention
The technical problems to be solved in the utility model is, for existing heat pump air conditioner unit above shortcomings, provides a kind of refrigerating efficiency, more energy-conservation double-effect heat pump air-conditioning unit of improving.
The utility model is to solve the problems of the technologies described above adopted technical scheme to be:
Double-effect heat pump air-conditioning unit, comprise compressor, cross valve, heat source side air cooling heat exchanger, heat source side water cooling heat exchanger, indoor heat exchanger, throttling arrangement, it is characterized in that: described compressor is connected with compressor through cross valve after being connected successively with heat source side air cooling heat exchanger, heat source side water cooling heat exchanger, throttling arrangement, indoor heat exchanger by cross valve again; Described heat source side water cooling heat exchanger and cooling water pump, cooling tower are connected in series and form loop; Described indoor heat exchanger and chilled water pump, air conditioning terminal are connected in series and form loop.
Press such scheme, during air-conditioning unit in summer refrigeration, refrigerant flow direction is: compressor outlet → cross valve → heat source side air cooling heat exchanger → heat source side water cooling heat exchanger → throttling arrangement → indoor heat exchanger → cross valve → suction port of compressor; When air conditioner unit in winter heats, refrigerant flow direction is: compressor outlet → cross valve → indoor heat exchanger → throttling arrangement → heat source side water cooling heat exchanger → heat source side air cooling heat exchanger → cross valve → suction port of compressor (refrigerant flow direction is controlled by cross valve).
Operation principle of the present utility model: cooling tower is put in the assembly of double-effect heat pump air conditioner and cooling water pump uses, and heat source side water cooling heat exchanger and cooling water pump, cooling tower are connected in series, and indoor heat exchanger and chilled water pump, air conditioning terminal are connected in series.When freeze summer, unit is by the operation of water-cooled cold water unit, and heat source side water cooling heat exchanger is worked, and cooling water pump and cooling tower operation, utilize heat source side air cooling heat exchanger to carry out free precooling simultaneously, but do not need to open the blower fan of heat source side air cooling heat exchanger; Unit Air-Cooled Heat Pump Unit operation routinely during winter heating, heat source side water cooling heat exchanger is not worked, and cooling water pump and cooling tower do not move; The fan operation work of heat source side air cooling heat exchanger.The position that unit is put is the same with air-cooled heat-pump air-conditioner group, can be placed on the region that roofing or grade etc. are opened wide, and cooling tower and cooling water pump are placed nearby, further reduce cooling water pump energy consumption and cooling water system pipeline.
The utlity model has following beneficial effect:
(1) double-effect heat pump air-conditioning unit is as central air-conditioning system main frame, be a water-cooled cold water unit summer, be a net for air-source heat pump units winter, when it has inherited every advantage of Air-Cooled Heat Pump Unit, by the water-cooled cold water unit refrigerating efficiency of 2 grades of efficiencies that summer, refrigerating efficiency was brought up to the current energy-saving threshold of 4.7~5.6(4.7~5.6), add the energy consumption of cooling tower and cooling water pump, its comprehensive energy efficiency is 4.1~4.8 left and right, summer, refrigerating efficiency improved 36%~50% than the refrigerating efficiency of conventional air-cooled heat-pump air-conditioner group (3.0~3.2), for Xia Redong cryogenic region provides more energy-conservation air conditioner cold-heat source, there is significant energy-saving effect, although equipment manufacturing cost can have increased slightly, and while using, need to increase the expense of cooling tower, cooling water pump, but due to the higher efficiency of unit, compare with air-cooled heat-pump air-conditioner group, investment payback time is only 3 ~ 4 years, replaces Air-Cooled Heat Pump Unit and has obvious economic benefit,
(2) proposed the scheme that heat source side water cooling heat exchanger is connected with heat source side air cooling heat exchanger and to be arranged, due to both series connection, do not needed to arrange the valve of switching, made that unit refrigerant line is more succinct, reliability is higher;
(3) for reducing heat source side water cooling heat exchanger and heat source side air cooling heat exchanger heat exchange area, reduce compressor peak power benchmark be provided: heat source side water cooling heat exchanger as summer water-cooled condenser use, its heat exchange area press the calculating of summer air-conditioning condensation load; Heat source side air cooling heat exchanger is as wind-cooled evaporator use in winter, and its heat exchange area is pressed the design of Winter heat supply load; Because summer air-conditioning refrigeration duty is larger than winter air-conditioning refrigeration duty, summer refrigerating efficiency higher than winter heating efficiency, compressor peak power is pressed the required peak power design of winter or summer.
Accompanying drawing explanation
Fig. 1 is the water system schematic diagram of the utility model air-conditioning unit;
Fig. 2 is the utility model cold-producing medium in summer flow chart;
Fig. 3 is the utility model winter refrigeration agent flow chart;
In figure, 1-compressor, 2-cross valve, 3-heat source side air cooling heat exchanger, 4-heat source side water cooling heat exchanger, 5-throttling arrangement, 6-indoor heat exchanger, 7-cooling tower, 8-cooling water pump, 9-air conditioning terminal, 10-chilled water pump.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is elaborated.
Shown in Fig. 1, double-effect heat pump air-conditioning unit described in the utility model, comprise that compressor 1, cross valve 2, heat source side air cooling heat exchanger 3, heat source side water cooling heat exchanger 4, indoor heat exchanger 6, other slave parts of throttling arrangement 5(are identical with Air-Cooled Heat Pump Unit), described compressor 1 passes through cross valve 2 again and is connected with compressor 1 after being connected successively with heat source side air cooling heat exchanger 3, heat source side water cooling heat exchanger 4, throttling arrangement 5, indoor heat exchanger 6 by cross valve 2; Described heat source side water cooling heat exchanger 4 is connected in series and forms loop with cooling water pump 8, cooling tower 7; Described indoor heat exchanger 6 is connected in series and forms loop with chilled water pump 10, air conditioning terminal 9.
Shown in Fig. 2, during air-conditioning unit in summer refrigeration, refrigerant flow direction is: compressor 1 outlet → cross valve 2 → heat source side air cooling heat exchanger 3 → heat source side water cooling heat exchanger 4 → throttling arrangement 5 → indoor heat exchanger 6 → cross valve 2 → compressor 1 entrance; Shown in Fig. 3, when air conditioner unit in winter heats, refrigerant flow direction is: compressor 1 outlet → cross valve 2 → indoor heat exchanger 6 → throttling arrangement 5 → heat source side water cooling heat exchanger 4 → heat source side air cooling heat exchanger 3 → cross valve, 2 → compressor, 1 entrance (refrigerant flow direction is controlled by cross valve 2).
Cooling tower 7 is put in the assembly of the utility model double-effect heat pump air conditioner and cooling water pump 8 uses, and heat source side water cooling heat exchanger 4 is connected in series with cooling water pump 8, cooling tower 7, and indoor heat exchanger 6 is connected in series with chilled water pump 10, air conditioning terminal 9.When freeze summer, unit is by the operation of water-cooled cold water unit, and heat source side water cooling heat exchanger 4 is worked, and cooling water pump 8 and cooling tower 7 operations, utilize heat source side air cooling heat exchanger 3 to carry out free precooling simultaneously, but do not need to open the blower fan of heat source side air cooling heat exchanger 3; Unit Air-Cooled Heat Pump Unit operation routinely during winter heating, heat source side water cooling heat exchanger 4 is not worked, and cooling water pump and cooling tower do not move; The fan operation work of heat source side air cooling heat exchanger 3.The position that unit is put is the same with air-cooled heat-pump air-conditioner group, can be placed on the region that roofing or grade etc. are opened wide, and cooling tower 7 and cooling water pump 8 are placed nearby, further reduce cooling water pump 8 energy consumptions and cooling water system pipeline.
From using function aspects comparison, double-effect heat pump air-conditioning unit is as central air-conditioning system main frame, and be a water-cooled cold water unit summer, and be a net for air-source heat pump units winter;
From the comparison of comprehensive utilization rate of energy source aspect, when double-effect heat pump air-conditioning unit has been inherited every advantage of Air-Cooled Heat Pump Unit, by the water-cooled cold water unit refrigerating efficiency of 2 grades of efficiencies that summer, refrigerating efficiency was brought up to the current energy-saving threshold of 4.7~5.6(4.7~5.6), add the energy consumption of cooling tower and cooling water pump, its comprehensive energy efficiency is 4.1~4.8 left and right, summer, refrigerating efficiency improved 36%~50% than the refrigerating efficiency of conventional air-cooled heat-pump air-conditioner group (3.0~3.2), for Xia Redong cryogenic region provides more energy-conservation air conditioner cold-heat source.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims (2)

1. double-effect heat pump air-conditioning unit, comprise compressor, cross valve, heat source side air cooling heat exchanger, heat source side water cooling heat exchanger, indoor heat exchanger, throttling arrangement, it is characterized in that: described compressor is connected with compressor through cross valve after being connected successively with heat source side air cooling heat exchanger, heat source side water cooling heat exchanger, throttling arrangement, indoor heat exchanger by cross valve again; Described heat source side water cooling heat exchanger and cooling water pump, cooling tower are connected in series and form loop; Described indoor heat exchanger and chilled water pump, air conditioning terminal are connected in series and form loop.
2. double-effect heat pump air-conditioning unit as claimed in claim 1, is characterized in that: during air-conditioning unit in summer refrigeration, refrigerant flow direction is: compressor outlet → cross valve → heat source side air cooling heat exchanger → heat source side water cooling heat exchanger → throttling arrangement → indoor heat exchanger → cross valve → suction port of compressor; When air conditioner unit in winter heats, refrigerant flow direction is: compressor outlet → cross valve → indoor heat exchanger → throttling arrangement → heat source side water cooling heat exchanger → heat source side air cooling heat exchanger → cross valve → suction port of compressor.
CN201320631610.2U 2013-10-14 2013-10-14 Double-effect heat pump air conditioning unit Expired - Lifetime CN203501363U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109442789A (en) * 2018-10-31 2019-03-08 重庆嘉福平能源科技有限公司 Heat source tower heat pump combined air-conditioning system
CN109442790A (en) * 2018-10-31 2019-03-08 重庆嘉福平能源科技有限公司 Heat source tower heat pump air-conditioner system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109442789A (en) * 2018-10-31 2019-03-08 重庆嘉福平能源科技有限公司 Heat source tower heat pump combined air-conditioning system
CN109442790A (en) * 2018-10-31 2019-03-08 重庆嘉福平能源科技有限公司 Heat source tower heat pump air-conditioner system
CN109442789B (en) * 2018-10-31 2024-01-19 广东恒泰制冷科技有限公司 Heat source tower heat pump combined air conditioning system

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Owner name: CENTRAL-SOUTH ARCHI TECTURAL DESIGN INSTITUTE CO.,

Free format text: FORMER OWNER: LV TIECHENG

Effective date: 20140904

C41 Transfer of patent application or patent right or utility model
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Free format text: CORRECT: ADDRESS; FROM: 430070 WUHAN, HUBEI PROVINCE TO: 430071 WUHAN, HUBEI PROVINCE

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Effective date of registration: 20140904

Address after: 430071 Zhongnan Road, Wuchang District, Hubei, Wuhan, China

Patentee after: CENTRAL-SOUTH ARCHITECTURAL DESIGN INSTITUTE Co.,Ltd.

Address before: 430070 eight wutie District of Wuchang District in Hubei province Wuhan City Bayi Road, building a unit Room 202

Patentee before: Lv Tiecheng

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CX01 Expiry of patent term

Granted publication date: 20140326