CN106352586A - Double machine head heat source tower heat pump unit - Google Patents

Double machine head heat source tower heat pump unit Download PDF

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Publication number
CN106352586A
CN106352586A CN201610890172.XA CN201610890172A CN106352586A CN 106352586 A CN106352586 A CN 106352586A CN 201610890172 A CN201610890172 A CN 201610890172A CN 106352586 A CN106352586 A CN 106352586A
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CN
China
Prior art keywords
condenser
economizer
compressor
heat pump
cold
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CN201610890172.XA
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Chinese (zh)
Inventor
文先太
王红艳
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Nanjing Institute of Technology
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Nanjing Institute of Technology
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Priority to CN201610890172.XA priority Critical patent/CN106352586A/en
Publication of CN106352586A publication Critical patent/CN106352586A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00Compression machines, plants or systems, with reversible cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements
    • F25B41/40Fluid line arrangements

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The invention discloses a double machine head heat source tower heat pump unit which comprises a refrigerating system A and a refrigerating system B which are the same. Each refrigerating system comprises a compressor, a condenser, a drying filter, an economizer solenoid valve, a thermostatic expansion valve, a liquid spray solenoid valve, an economizer, an electronic expansion valve and an evaporator. An air outlet of the compressor is connected with the refrigerating fluid input end of the condenser, the refrigerating fluid output end of the condenser is connected with the drying filter, the drying filter is connected with an air suction port of the compressor through the liquid spray solenoid valve, the main side refrigerating fluid input end of the economizer is connected with the drying filter, the main side refrigerating fluid output end is connected with the refrigerating fluid input end of the evaporator, the refrigerating fluid output end of the evaporator is connected with the air suction port of the compressor, the auxiliary side refrigerating fluid output end of the economizer is connected with an economizer port of the compressor, and the auxiliary side refrigerating fluid input end is connected with the drying filter through the thermostatic expansion valve and the economizer solenoid valve, and the performance of the whole unit is improved.

Description

A kind of Double-head heat source tower heat pump unit
Technical field
The present invention relates to a kind of Double-head heat source tower heat pump unit.
Background technology
Air-conditioning is main architectural energy consumption rich and influential family, how effectively to reduce air conditioning energy consumption, improves efficiency of energy utilization, is air-conditioning The emphasis of industry research.Along the hot-summer and cold-winter area of the Yangtze river basin, its climatic characteristic is that summer is extremely hot, and winter is clammy for China, empty Air humidity degree is larger.Mainly there are three kinds in the traditional heavy construction in this region for cold heat ("/" is the meaning of "or") mode at present: Water cooled chiller+boiler, water/ground source heat pump and air-cooled heat pump.
Wherein, air-cooled heat pump can realize supplying cold heat simultaneously, but the efficiency for cold heat is comparatively relatively low;Water/ground Source heat pump can realize for cold heat simultaneously and efficiency is all higher, but is limited by geographical environment and initial cost are high;Water-cooled cooling-water machine Group+boiler cooling/hot mode, its summer operation efficiency high, and winter adopts boiler heat supplying, primary energy ratio is low.
Heat source tower heat pump system is to take into full account hot-summer and cold-winter area climatic environment and existing three kinds of cooling/hot modes Produce on the basis of pluses and minuses, its summer is capable of efficient cooling, and winter is capable of efficient heat supply, and is not subject to geographical ring Border limits, and initial cost is relatively low, is the ideal air conditioning system of hot-summer and cold-winter area.But the heat source tower heat pump system of existing design There are following deficiencies in use:
Firstth, handpiece Water Chilling Units no heat-production functions, although can be met to a certain extent by simple change control system will Ask, but under heat source tower heat pump heating condition especially when ambient temperature is relatively low, its heating efficiency is very low, and heating load is also tight Weight is not enough.
Secondth, existing ripe its supplying thermal condition of water/ground source heat pump has larger gap compared with heat source tower heat pump operating mode, its Heat source tower heat pump operating mode is run, and especially under the relatively low operating mode of ambient temperature, heat capacity is excessively poor.
Thus the characteristic for heat source tower heat pump system, develop a kind of high-efficiency heat pump of suitable heat source tower heat pump system operation Unit is current research worker issues that need special attention.
Content of the invention
For the problems referred to above, the present invention provides a kind of Double-head heat source tower heat pump unit, greatly improves heat source tower heat pump Heating efficiency when unit runs in the winter time and heating capacity, improve compressor performance, thus improving whole unit performance simultaneously.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
A kind of Double-head heat source tower heat pump unit is it is characterised in that include two sets of identical refrigeration systems a and refrigeration system b, often Set refrigeration system includes compressor, condenser, device for drying and filtering, economizer electromagnetic valve, heating power expansion valve, hydrojet electromagnetic valve, warp Ji device, electric expansion valve and vaporizer, the air vent of described compressor is connected and condenser with the cold-producing medium input of condenser Output of condenser be connected with device for drying and filtering, described device for drying and filtering passes through the air entry phase of hydrojet electromagnetic valve and compressor Even, the master cold-producing medium input of described economizer is connected with device for drying and filtering and master output of condenser passes through electronic expansion Valve is connected with the cold-producing medium input of vaporizer, and the output of condenser of described vaporizer is connected with the air entry of compressor, institute State economizer auxiliary side output of condenser be connected with the economizer interface of compressor and auxiliary side cold-producing medium input pass through heating power Expansion valve is connected with device for drying and filtering with economizer electromagnetic valve.
Preferably, the water side input phase of the water side outfan of the vaporizer of refrigeration system a and the vaporizer of refrigeration system b Even, the water side outfan of the condenser of refrigeration system b is connected with the water side input of the condenser of refrigeration system a.
Preferably, it is provided with ball valve between the output of condenser of condenser and device for drying and filtering.
Preferably, it is provided with choke valve between hydrojet electromagnetic valve and the air entry of compressor.
The invention has the beneficial effects as follows:
Firstth, unit arranges two sets of identical refrigeration systems a and refrigeration system b, can be by closing a compression in underload Machine runs under high loads realizing single compressor, opens two compressor operatings, compressor performance in high load capacity simultaneously Coefficient is high, thus improving whole unit performance coefficient.
Secondth, two compressors are mutually redundant setting, when one of fault it can be ensured that the normal operation of system.
3rd, heat source tower heat pump unit adopts low temperature spray liquid enthalpy gain technology and economizer heat transfer technology, greatly improves heat Heating efficiency when source tower source pump is run in the winter time and heating capacity.
4th, refrigeration system a and refrigeration system b adopt type industrial cooling system condenser and vaporizer, and water side heat transfer coefficient is more Height, switches to the impact to evaporator heat exchange during anti-icing fluid such that it is able to weaken heat source tower heat pump unit heating condition.
5th, refrigeration system a and refrigeration system b adopt type industrial cooling system condenser and vaporizer, each of which refrigeration system Corresponding condensing pressure and evaporating pressure ratio, compared with conventional refrigeration, all have larger reduction, so that performance demands Number is greatly improved.
Brief description
Fig. 1 is a kind of structural representation of present invention Double-head heat source tower heat pump unit;
The labelling implication of accompanying drawing is as follows:
1: compressor a;2: shell and tube condenser a;2-1: shell and tube condenser a cold-producing medium input;2-2: shell and tube condenser a Output of condenser;2-3: shell and tube condenser a water side input;2-4: shell and tube condenser a water side outfan;3: ball valve a; 4: device for drying and filtering a;5: economizer electromagnetic valve a;6: heating power expansion valve a;7: hydrojet electromagnetic valve a;8: choke valve a;9: economizer a;9-1: economizer a master cold-producing medium input;9-2: economizer a master output of condenser;9-3: economizer a auxiliary side refrigeration Agent input;9-4: economizer a auxiliary side output of condenser;10: electric expansion valve a;11: shell and tube evaporator a;11-1: shell Tubular evaparator a cold-producing medium input;11-2: shell and tube evaporator a output of condenser;11-3: shell and tube evaporator a water side Input;11-4: shell and tube evaporator a water side outfan;12: compressor b;13: shell and tube condenser b;13-1: shell-tube type is cold Condenser b cold-producing medium input;13-2: shell and tube condenser b output of condenser;13-3: shell and tube condenser b water side inputs End;13-4: shell and tube condenser b water side outfan;14: ball valve b;15: device for drying and filtering b;16: economizer electromagnetic valve b;17: Heating power expansion valve b;18: hydrojet electromagnetic valve b;19: choke valve b;20: economizer b;20-1: economizer b master cold-producing medium inputs End;20-2: economizer b master output of condenser;20-3: economizer b auxiliary side cold-producing medium input;20-4: economizer b auxiliary side Output of condenser;21: electric expansion valve b;22: shell and tube evaporator b;22-1: shell and tube evaporator b cold-producing medium input; 22-2: shell and tube evaporator b output of condenser;22-3: shell and tube evaporator b water side input;22-4: shell and tube evaporator B water side outfan.
Specific embodiment
With specific embodiment, technical solution of the present invention is described in further detail below in conjunction with the accompanying drawings, so that ability The technical staff in domain can be better understood from the present invention and can be practiced, but illustrated embodiment is not as the limit to the present invention Fixed.
A kind of Double-head (two compressors) heat source tower heat pump unit, as shown in figure 1, include two sets of identical refrigeration systems A and refrigeration system b, refrigeration system a and refrigeration system b are separate, often set refrigeration system include compressor, condenser, Device for drying and filtering, economizer electromagnetic valve, heating power expansion valve, hydrojet electromagnetic valve, economizer, electric expansion valve and vaporizer.
The air vent of described compressor be connected with the cold-producing medium input of condenser and the output of condenser of condenser with Device for drying and filtering is connected, and described device for drying and filtering is connected with the air entry of compressor by hydrojet electromagnetic valve, described economizer Master cold-producing medium input is connected with device for drying and filtering and the system by electric expansion valve and vaporizer for the master output of condenser Cryogen input is connected, and the output of condenser of described vaporizer is connected with the air entry of compressor, the auxiliary side of described economizer Output of condenser is connected with the economizer interface of compressor and auxiliary side cold-producing medium input passes through heating power expansion valve and economizer Electromagnetic valve is connected with device for drying and filtering.
Preferably, the water side input phase of the water side outfan of the vaporizer of refrigeration system a and the vaporizer of refrigeration system b Even, the water side outfan of the condenser of refrigeration system b is connected with the water side input of the condenser of refrigeration system a.
Preferably, it is provided with ball valve, hydrojet electromagnetic valve and compression between the output of condenser of condenser and device for drying and filtering It is provided with choke valve between the air entry of machine.
1 it is described in detail below in conjunction with the accompanying drawings, in Fig. 1, condenser is shell and tube condenser, vaporizer is that shell-tube type steams Send out device, connected by connecting pipe between refrigeration system a and refrigeration system b.It should be noted that, for the ease of distinguishing, exist respectively Make a distinction plus a or b after each component names, it corresponds to the part of refrigeration system a and refrigeration system b, i.e. refrigeration system a respectively Including compressor a1, shell and tube condenser a2, ball valve a3, device for drying and filtering a4, economizer electromagnetic valve a5, heating power expansion valve a6, Hydrojet electromagnetic valve a7, choke valve a8, economizer a9, electric expansion valve a10 and shell and tube evaporator a11, refrigeration system b includes pressing Contracting machine b12, shell and tube condenser b13, ball valve b14, device for drying and filtering b15, economizer electromagnetic valve b16, heating power expansion valve b17, Hydrojet electromagnetic valve b18, choke valve b19, economizer b20, electric expansion valve b21 and shell and tube evaporator b22.
For refrigeration system a:
The refrigerant gas of High Temperature High Pressure are discharged into shell and tube condenser a cold-producing medium input 2- from the air vent of compressor a1 1, high-temperature high-pressure refrigerant gas is condensed into normal temperature high voltage refrigerant liquid, and normal temperature high voltage refrigerant liquid is condensed by shell-tube type Device a output of condenser 2-2, ball valve a3 flow into device for drying and filtering a4.
Normal temperature high voltage cold-producing medium is divided into three tunnels in device for drying and filtering a4 outlet: part of refrigerant passes through hydrojet electromagnetic valve A7, choke valve a8 flow into the air entry of compressor a1;Another part cold-producing medium passes through economizer electromagnetic valve a5, heating power expansion valve a6 Enter economizer a auxiliary side cold-producing medium input 9-3, then compressor is flowed into by economizer a auxiliary side output of condenser 9-4 The economizer interface of a1;Most of cold-producing medium is defeated by economizer a master cold-producing medium input 9-1, economizer a master cold-producing medium Go out to hold 9-2 to flow into electric expansion valve a10, the gas-liquid mixture that the throttling of normal temperature high voltage refrigerant liquid is changed into low-temp low-pressure enters shell Tubular evaparator a cold-producing medium input 11-1, the refrigerant liquid of low-temp low-pressure seethes with excitement in vaporizer, is changed into low-temp low-pressure system The air entry of compressor a1 after refrigerant gas, is flowed back to through shell and tube evaporator a output of condenser 11-2.
For refrigeration system b:
The refrigerant gas of High Temperature High Pressure are discharged into shell and tube condenser b cold-producing medium input from the air vent of compressor b12 13-1, high-temperature high-pressure refrigerant gas is condensed into normal temperature high voltage refrigerant liquid, and normal temperature high voltage refrigerant liquid passes through shell-tube type Condenser b output of condenser 13-2, ball valve b14 flow into device for drying and filtering b15.
Normal temperature high voltage cold-producing medium is divided into three tunnels in device for drying and filtering b15 outlet: part of refrigerant passes through hydrojet electromagnetic valve B18, choke valve b19 flow into the air entry of compressor b12;Another part cold-producing medium passes through economizer electromagnetic valve b16, thermal expansion Valve b17 enters economizer b auxiliary side cold-producing medium input 20-3, then passes through economizer b auxiliary side output of condenser 20-4 and flows into Economizer interface to compressor b12;Most of cold-producing medium passes through economizer b master cold-producing medium input 20-1, economizer b master Side output of condenser 20-2 flows into electric expansion valve b21, and the throttling of normal temperature high voltage refrigerant liquid is changed into the gas-liquid of low-temp low-pressure Mixture enters shell and tube evaporator b cold-producing medium input 22-1, and the refrigerant liquid of low-temp low-pressure seethes with excitement in vaporizer, becomes The air entry of compressor b12 after low-temperature low-pressure refrigerant gas, is flowed back to through shell and tube evaporator b output of condenser 22-2.
Chilled water passes through shell and tube evaporator a water side input 11-3 and flows into, shell and tube evaporator a water side outfan 11-4 It is connected by pipeline with shell and tube evaporator b water side input 22-3, chilled water passes through shell and tube evaporator b water side outfan 22-4 flows out.Vaporizer a11 and vaporizer b22 is connected by the way of counter flow in series, realizes the system evaporation of compressor a1 place Temperature is high, and coefficient of performance is high, and heat exchange amount increases.
Cooling water passes through shell and tube condenser b water side input 13-3 and flows into, shell and tube condenser b water side outfan 13-4 It is connected by pipeline with shell and tube condenser a water side input 2-3, cooling water passes through shell and tube condenser a water side outfan 2-4 Flow out.Condenser a2 and condenser b13 is connected by the way of counter flow in series, realizes compressor b12 place system condensing temperature Low, coefficient of performance is high.
Configure economizer in condensator outlet, improve the coefficient of performance of heat source tower heat pump unit and heating at low ambient temperatures Amount, configures hydrojet electromagnetic valve and hydrojet choke valve in condensator outlet, improves the system of heat source tower heat pump unit at low ambient temperatures Heat.
The invention has the beneficial effects as follows:
Firstth, unit arranges two sets of identical refrigeration systems a and refrigeration system b, can be by closing a compression in underload Machine runs under high loads realizing single compressor, opens two compressor operatings, compressor performance in high load capacity simultaneously Coefficient is high, thus improving whole unit performance coefficient.
Secondth, two compressors are mutually redundant setting, when one of fault it can be ensured that the normal operation of system.
3rd, heat source tower heat pump unit adopts low temperature spray liquid enthalpy gain technology and economizer heat transfer technology, greatly improves heat Heating efficiency when source tower source pump is run in the winter time and heating capacity.
4th, refrigeration system a and refrigeration system b adopt type industrial cooling system condenser and vaporizer, and water side heat transfer coefficient is more Height, switches to the impact to evaporator heat exchange during anti-icing fluid such that it is able to weaken heat source tower heat pump unit heating condition.
5th, refrigeration system a and refrigeration system b adopt type industrial cooling system condenser and vaporizer, each of which refrigeration system Corresponding condensing pressure and evaporating pressure ratio, compared with conventional refrigeration, all have larger reduction, so that performance demands Number is greatly improved.
These are only the preferred embodiments of the present invention, not thereby limit the present invention the scope of the claims, every using this Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or it is related to be directly or indirectly used in other Technical field, be included within the scope of the present invention.

Claims (6)

1. a kind of Double-head heat source tower heat pump unit is it is characterised in that include two sets of identical refrigeration systems a and refrigeration system b, Often set refrigeration system include compressor, condenser, device for drying and filtering, economizer electromagnetic valve, heating power expansion valve, hydrojet electromagnetic valve, Economizer, electric expansion valve and vaporizer, the air vent of described compressor is connected and condenses with the cold-producing medium input of condenser The output of condenser of device is connected with device for drying and filtering, and described device for drying and filtering passes through the air entry of hydrojet electromagnetic valve and compressor It is connected, the master cold-producing medium input of described economizer is connected with device for drying and filtering and master output of condenser is swollen by electronics Swollen valve is connected with the cold-producing medium input of vaporizer, and the output of condenser of described vaporizer is connected with the air entry of compressor, The auxiliary side output of condenser of described economizer is connected with the economizer interface of compressor and auxiliary side cold-producing medium input passes through heat Power expansion valve is connected with device for drying and filtering with economizer electromagnetic valve.
2. a kind of Double-head heat source tower heat pump unit according to claim 1 is it is characterised in that the evaporation of refrigeration system a The water side outfan of device is connected with the water side input of the vaporizer of refrigeration system b, the water side output of the condenser of refrigeration system b End is connected with the water side input of the condenser of refrigeration system a.
3. a kind of Double-head heat source tower heat pump unit according to claim 1 is it is characterised in that the cold-producing medium of condenser is defeated Go out and be provided with ball valve between end and device for drying and filtering.
4. a kind of Double-head heat source tower heat pump unit according to claim 1 is it is characterised in that hydrojet electromagnetic valve and compression It is provided with choke valve between the air entry of machine.
5. a kind of Double-head heat source tower heat pump unit according to claim 1 is it is characterised in that described condenser is package Formula condenser.
6. a kind of Double-head heat source tower heat pump unit according to claim 5 is it is characterised in that described vaporizer is package Formula vaporizer.
CN201610890172.XA 2016-10-13 2016-10-13 Double machine head heat source tower heat pump unit Pending CN106352586A (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106996660A (en) * 2017-05-17 2017-08-01 南京工程学院 Big temperature difference Double-head heat pump based on heat source tower Yu underground pipe cooperation
CN107883606A (en) * 2017-12-12 2018-04-06 南京天加环境科技有限公司 A kind of efficient heat source tower heat pump
CN108895711A (en) * 2018-04-28 2018-11-27 广东西屋康达空调有限公司 A kind of screw rod type heat pump machine unit

Citations (6)

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Publication number Priority date Publication date Assignee Title
CN1506649A (en) * 2002-12-12 2004-06-23 ������������ʽ���� Heat-transfer apparatus and electronic apparatus
KR100794271B1 (en) * 2006-11-13 2008-01-11 주식회사 국민에너지 Heat pump system that use duality compression type
CN101256042A (en) * 2008-04-16 2008-09-03 清华大学 Large temperature rise compression heat pump units
CN101619904A (en) * 2009-08-02 2010-01-06 山东美琳达再生能源开发有限公司 Two-stage heating high temperature heat pump device
CN202648232U (en) * 2012-05-29 2013-01-02 泰豪科技股份有限公司 Water source heat pump unit with liquid spray system
CN104930577A (en) * 2015-07-07 2015-09-23 刘秋克 Double-effect heat supply device of low-temperature superconducting source heat pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1506649A (en) * 2002-12-12 2004-06-23 ������������ʽ���� Heat-transfer apparatus and electronic apparatus
KR100794271B1 (en) * 2006-11-13 2008-01-11 주식회사 국민에너지 Heat pump system that use duality compression type
CN101256042A (en) * 2008-04-16 2008-09-03 清华大学 Large temperature rise compression heat pump units
CN101619904A (en) * 2009-08-02 2010-01-06 山东美琳达再生能源开发有限公司 Two-stage heating high temperature heat pump device
CN202648232U (en) * 2012-05-29 2013-01-02 泰豪科技股份有限公司 Water source heat pump unit with liquid spray system
CN104930577A (en) * 2015-07-07 2015-09-23 刘秋克 Double-effect heat supply device of low-temperature superconducting source heat pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106996660A (en) * 2017-05-17 2017-08-01 南京工程学院 Big temperature difference Double-head heat pump based on heat source tower Yu underground pipe cooperation
CN107883606A (en) * 2017-12-12 2018-04-06 南京天加环境科技有限公司 A kind of efficient heat source tower heat pump
CN108895711A (en) * 2018-04-28 2018-11-27 广东西屋康达空调有限公司 A kind of screw rod type heat pump machine unit

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