CN106288509A - A kind of plate evaporating condensation type water chiller-heater unit - Google Patents

A kind of plate evaporating condensation type water chiller-heater unit Download PDF

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Publication number
CN106288509A
CN106288509A CN201510266802.1A CN201510266802A CN106288509A CN 106288509 A CN106288509 A CN 106288509A CN 201510266802 A CN201510266802 A CN 201510266802A CN 106288509 A CN106288509 A CN 106288509A
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CN
China
Prior art keywords
valve
way change
plate
heat exchanger
injector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510266802.1A
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Chinese (zh)
Inventor
李应林
陈传宝
谭来仔
沈勇
汤昱
高翔
王楠
孙思
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANJING WUZHOU REFRIGERATION GROUP CO Ltd
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NANJING WUZHOU REFRIGERATION GROUP CO Ltd
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Priority to CN201510266802.1A priority Critical patent/CN106288509A/en
Publication of CN106288509A publication Critical patent/CN106288509A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a kind of plate evaporating condensation type water chiller-heater unit, including compressor, oil eliminator, four-way change-over valve, water-side heat, electromagnetic valve, device for drying and filtering, pressure regulator valve, injector, plate type heat exchanger and low-pressure oil storage;Described compressor, oil eliminator and four-way change-over valve are sequentially connected, and four ports of described four-way change-over valve are respectively A end, B end, C end and D end;Described oil eliminator is connected with the B end of four-way change-over valve.The present invention passes through cold-producing medium injection recirculation so that when system is run in cooling or heating mode, the refrigerant flow of evaporator inlet increases, and cold-producing medium two degree of coherence reduces and the coefficient of heat transfer increases, and can effectively reduce the area of plate type heat exchanger;The present invention does not use throttling arrangement, realizes expanding pressure reduction by injector, reduces the irreversible loss during refrigerant-expansion, can improve systematic entirety energy.

Description

A kind of plate evaporating condensation type water chiller-heater unit
Technical field
The present invention relates to air-conditioning and refrigeration technology field, a kind of plate evaporating condensation type water chiller-heater unit.
Background technology
Current vapor compression heat pump is air conditioning unit can be divided into according to condensing mode that water cooling heat pump is air conditioning unit, air-cooled heat pump Air conditioning unit and geo-source heat-pump air conditioner group.Wherein, air-cooled heat-pump air-conditioner group uses forced ventilation mode to realize condenser Inner refrigerant and the heat exchange of air, it is when summer, outdoor environment temperature was higher, and heat exchange effect is poor, is easily caused system Condensing pressure and condensation temperature higher, thus affect the overall performance of refrigeration system;When winter heating, especially when When ambient outdoor air humidity is bigger, the easy frosting of heat exchange surface of vaporizer, reduce unit effectively heats the working time, Reduce the overall heating performance of system.Water cooling heat pump is air conditioning unit is that logical supercooled water realizes heat exchange in condenser, Its weak point is that systematic comparison is complicated, needs extra increase water pump and cooling tower blood circulation, adds equipment cost, Equipment is arranged and is also received certain restriction simultaneously.Geo-source heat-pump air conditioner group has higher wanting to the water yield and the water quality at water source Asking, there is the uneven restriction with building geographical conditions of cooling and heating load in its actual application, and needs substantial amounts of pipe laying space. Additionally, existing vaporizer feed liquid way there is also, the overall Energy Efficiency Ratio of such as dry type vapo(u)rization system is on the low side, full-liquid type evaporation system The refrigerant charge of system is big, falling film evaporation system is difficult to realize the problems such as uniform cloth liquid.Thus market demand is more efficient changes Hot, safety and reliability, the vapo(u)rization system of more energy efficient environmental protection, thus improve the heat exchange property of vaporizer.
In recent years, air-cooled evaporating condensation type heat exchanger obtains industry and more and more pays close attention to, and it follows by heat exchanger outer surface Ring spray trickle and the coupled and heat-exchange of Forced Convection Air, compared with traditional dry type air cooling heat exchanger, can be effectively improved and change Hot coefficient, reduction condensing pressure or raising evaporating pressure.The air-cooled evaporating heat exchanger of patent 96200559.2 uses one Pipe is as heat exchange element;The air-cooled evaporating heat exchanger employing elliptical tube of patent 01211774.9 is as heat exchange element, specially The air-cooled evaporating heat exchanger of profit 200920087731.9 uses finned tube tube bank for heat exchange element, patent 200510076870.8 Air-cooled evaporating heat exchanger use plate adopt as heat exchange element, the air-cooled evaporating heat exchanger of patent 200910038011.8 With the plate of band filler as heat exchange element.
From the point of view of air-cooled evaporating condensation type heat exchanger development trend, air-cooled plate evaporating condensation type heat exchanger has more preferable skill Art advantage and development prospect, but owing to plate heat exchanger inner channel heat exchange area is the biggest, the refrigeration of channel interior Agent flux relative deficiency, heat exchange area fails to be fully utilized, and its heat transfer effect can also improve further.
For this technical problem, the heat pump type air conditioning system of patent 200910244119.5 is by using liquid pump, at cooling in summer Can be to vaporizer (or evaporative condenser) feed flow under operating mode (or winter heating's operating mode), steam side entrance is pure liquid Phase cold-producing medium, and evaporation side refrigerant flow is relatively large, it is possible to obtain evaporate than traditional dry evaporator or full-liquid type The higher heat exchange efficiency of device;But this patent adds additional refrigerant cycle liquid pump, increases system power dissipation, to system The lifting of overall efficiency is unfavorable.
From the above analysis, in existing plate evaporating condensation type heat pump type air conditioning system, owing to plate heat exchanger refrigeration side leads to The underfed of road inner refrigerant, the heat exchange area of plate heat exchanger is not efficiently used, and the entirety of plate heat exchanger is changed Thermal effect is the most undesirable, suddenly treats further to improve.
Summary of the invention
For achieving the above object, the technical solution used in the present invention is: a kind of plate evaporating condensation type water chiller-heater unit, bag Include compressor, oil eliminator, four-way change-over valve, water-side heat, electromagnetic valve, device for drying and filtering, pressure regulator valve, injection Device, plate type heat exchanger and low-pressure oil storage;
Described compressor, oil eliminator and four-way change-over valve are sequentially connected, and four ports of described four-way change-over valve are respectively A end, B end, C end and D end;Described oil eliminator is connected with the B end of four-way change-over valve;
The import of described water-side heat is connected with the C end of four-way change-over valve, and the outlet of water-side heat, electromagnetic valve, Device for drying and filtering, pressure regulator valve and injector are sequentially connected;
The A end of described four-way change-over valve is connected with plate type heat exchanger;
The D end of described four-way change-over valve is connected with low-pressure oil storage;
Described injector is provided with tri-ports of E, F, G altogether;Described pressure regulator valve is connected with the E end of injector, described in draw The F end of emitter is connected with low-pressure oil storage bottom interface, and the entrance of low-pressure oil storage is also connected with compressor 1;Described The C end of injector is connected with plate type heat exchanger, and plate type heat exchanger is connected with the A end of four-way change-over valve.
As preferably, between described water-side heat and electromagnetic valve, it is additionally provided with the first check valve, described first check valve Circulating direction is to flow to electromagnetic valve from water-side heat.
As preferably, the G port of described injector is provided with two branch roads, and a branch road is connected to by the second check valve Plate type heat exchanger, another article of branch road be then connected to by the 3rd check valve water-side heat outlet and the first check valve it Between;Being additionally provided with a branch path between described second reversal valve and plate type heat exchanger, this branch path is by the 4th check valve even It is connected between the first check valve and electromagnetic valve.
Beneficial effect: the present invention has the advantage that compared with conventional solution
(1) present invention passes through cold-producing medium injection recirculation so that steam when system is run in cooling or heating mode The refrigerant flow sending out device entrance increases, and cold-producing medium two degree of coherence reduces and the coefficient of heat transfer increases, and can effectively reduce plate-sheet-type The area of heat exchanger;
(2) present invention does not use throttling arrangement, realizes expanding pressure reduction by injector, reduces refrigerant-expansion mistake Irreversible loss in journey, can improve systematic entirety energy.
Accompanying drawing explanation
Fig. 1 is the system flow schematic diagram of the present invention;
Fig. 2 is the cooling system schematic flow sheet of the present invention;
Fig. 3 is that the system of the present invention heats schematic flow sheet.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further illustrated.
As it is shown in figure 1, a kind of plate evaporating condensation type water chiller-heater unit, including compressor 1, oil eliminator 2, four-way Reversal valve 3, water-side heat 4, electromagnetic valve 5, device for drying and filtering 6, pressure regulator valve 7, injector 8, plate-sheet-type heat exchange Device 9 and low-pressure oil storage 10;Compressor 1 therein, oil eliminator 2 and four-way change-over valve 3 are sequentially connected, and described four Four ports of logical reversal valve 3 are respectively A end, B end, C end and D end;Described oil eliminator 2 and four-way change-over valve The B end of 3 is connected.
The import of water-side heat 4 is connected with the C end of four-way change-over valve 3, and the outlet of water-side heat 4, electromagnetic valve 5, device for drying and filtering 6, pressure regulator valve 7 and injector 8 are sequentially connected;The A end of four-way change-over valve 3 and plate-sheet-type heat exchange Device 9 is connected;The D end of four-way change-over valve 3 is connected with low-pressure oil storage 10;
The injector 8 of the present invention is provided with tri-ports of E, F, G altogether;The E end phase of described pressure regulator valve 7 and injector 8 Even, the F end of described injector 8 be connected with low-pressure oil storage 10 bottom interface, and the entrance of low-pressure oil storage 10 also with Compressor 1 is connected;The C end of described injector 8 is connected with plate type heat exchanger 9, and plate type heat exchanger 9 changes with four-way Being connected to the A end of valve 3, the G port of injector 8 is provided with two branch roads, and a branch road is by the second check valve 12 Be connected to plate type heat exchanger 9, another article of branch road be then connected to by the 3rd check valve 13 outlet of water-side heat 4 with Between first check valve 11;It is additionally provided with a branch path, this point between described second reversal valve 12 and plate type heat exchanger 9 Branch road is connected between the first check valve 11 and electromagnetic valve 5 by the 4th check valve 14
The first check valve 11, the circulation of described first check valve 11 it is additionally provided with between water-side heat 4 and electromagnetic valve 6 Direction is to flow to electromagnetic valve 6 from water-side heat 4.
The present invention is divided into refrigeration mode and two kinds of mode of operations of heating mode, refrigeration mode therein as shown in Figure 2: from The high-pressure refrigerant that compressor flows out, after oil eliminator, enters the B port of four-way change-over valve, from four-way change-over valve 3 A port enter cooling condensation in plate type heat exchanger, cool down condensed high pressure liquid refrigerant unidirectional by the 4th After valve, electromagnetic valve, device for drying and filtering and pressure regulator valve, send into the E port of injector, as the high-pressure work stream of injector Body;Low-pressure, liquid refrigerant bottom low-pressure oil storage is pumped to the F port of injector by pressurized working fluid, as low Pressure driving fluid;Pressurized working fluid and low-pressure injection fluid become the biphase refrigeration of low pressure in injector internal mix expansion Agent, flows out from the G port of injector 9, is admitted to heat absorption evaporation in water-side heat, by low pressure after the 3rd check valve Low-pressure, liquid refrigerant bottom reservoir is pumped in injector, and the low pressure two-phase mixtures cold-producing medium flowed out from injector enters Enter the C port of four-way change-over valve, from the D port of four-way change-over valve flow out laggard enter in low-pressure oil storage, through gas-liquid After separation, low-pressure gaseous refrigerant is sucked by compressor, completes a kind of refrigeration cycle.
The heating mode of the present invention is as shown in Figure 3: the high-pressure refrigerant flowed out from compressor, after oil eliminator, enters The B port of four-way change-over valve, flows out cooling condensation in laggard water inlet side heat exchanger from the C port of four-way change-over valve, cold The most condensed high-pressure refrigerant, by the first check valve, electromagnetic valve, device for drying and filtering and pressure regulator valve, is then fed into injection The E port of device, as the pressurized working fluid of injector;Low-pressure, liquid refrigerant bottom low-pressure oil storage is by high pressure work The F port of injector it is pumped to, as low-pressure injection fluid as fluid;Pressurized working fluid and low-pressure injection fluid are drawing Emitter internal mix expansion become low pressure two phase refrigerant, flow out from the G port of injector, quilt after the second check valve Send into heat absorption evaporation in plate type heat exchanger, subsequently into the A port of four-way change-over valve, from the D end of four-way change-over valve Mouth enters in low-pressure oil storage after flowing out, and after gas-liquid separation, is sucked by compressor, completes one and heat circulation.
The present invention passes through cold-producing medium injection recirculation so that when system is run in cooling or heating mode, vaporizer enters The refrigerant flow of mouth increases, and cold-producing medium two degree of coherence reduces and the coefficient of heat transfer increases, and can effectively reduce plate type heat exchanger Area;The present invention does not use throttling arrangement, realizes expanding pressure reduction by injector, reduces refrigerant-expansion process In irreversible loss, systematic entirety energy can be improved.
The above is only the preferred embodiment of the present invention, it is noted that for those skilled in the art For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also Should be regarded as protection scope of the present invention.

Claims (3)

1. a plate evaporating condensation type water chiller-heater unit, it is characterised in that: include compressor (1), oil eliminator (2), Four-way change-over valve (3), water-side heat (4), electromagnetic valve (5), device for drying and filtering (6), pressure regulator valve (7), injection Device (8), plate type heat exchanger (9) and low-pressure oil storage (10);
Described compressor (1), oil eliminator (2) and four-way change-over valve (3) are sequentially connected, described four-way change-over valve (3) Four ports be respectively A end, B end, C end and D end;Described oil eliminator (2) and four-way change-over valve (3) B end is connected;
The import of described water-side heat (4) is connected with the C end of four-way change-over valve (3), and water-side heat (4) Outlet, electromagnetic valve (5), device for drying and filtering (6), pressure regulator valve (7) and injector (8) be sequentially connected;
The A end of described four-way change-over valve (3) is connected with plate type heat exchanger (9);
The D end of described four-way change-over valve (3) is connected with low-pressure oil storage (10);
Described injector (8) is provided with tri-ports of E, F, G altogether;Described pressure regulator valve (7) and the E of injector (8) End is connected, the F end of described injector (8) is connected with low-pressure oil storage (10) bottom interface, and low-pressure oil storage (10) Entrance be also connected with compressor (1);The C end of described injector (8) is connected with plate type heat exchanger (9), plate Plate heat interchanger (9) is connected with the A end of four-way change-over valve (3).
A kind of plate evaporating condensation type water chiller-heater unit the most according to claim 1, it is characterised in that: described water The first check valve (11), described first check valve (11) it is additionally provided with between side heat exchanger (4) and electromagnetic valve (6) Circulating direction be to flow to electromagnetic valve (6) from water-side heat (4).
A kind of plate evaporating condensation type water chiller-heater unit the most according to claim 2, it is characterised in that draw described in: The G port of emitter (8) is provided with two branch roads, and a branch road is connected to plate-sheet-type by the second check valve (12) and changes Hot device (9), another article of branch road is then connected to the outlet and first of water-side heat (4) by the 3rd check valve (13) Between check valve (11);It is additionally provided with a branch path between described second reversal valve (12) and plate type heat exchanger (9), This branch path is connected between the first check valve (11) and electromagnetic valve (5) by the 4th check valve (14).
CN201510266802.1A 2015-05-22 2015-05-22 A kind of plate evaporating condensation type water chiller-heater unit Pending CN106288509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510266802.1A CN106288509A (en) 2015-05-22 2015-05-22 A kind of plate evaporating condensation type water chiller-heater unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510266802.1A CN106288509A (en) 2015-05-22 2015-05-22 A kind of plate evaporating condensation type water chiller-heater unit

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Publication Number Publication Date
CN106288509A true CN106288509A (en) 2017-01-04

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2486924Y (en) * 2001-05-30 2002-04-17 武汉新世界制冷工业有限公司 Large and medium ammonia refrigeration unit
JP2004239493A (en) * 2003-02-05 2004-08-26 Denso Corp Heat pump cycle
WO2006033378A1 (en) * 2004-09-22 2006-03-30 Denso Corporation Ejector type refrigeration cycle
JP2007057177A (en) * 2005-08-25 2007-03-08 Denso Corp Vapor compression type refrigerating cycle device
JP2007147198A (en) * 2005-11-29 2007-06-14 Denso Corp Vapor compression type refrigeration cycle using ejector, and its low-pressure-system component
CN101004327A (en) * 2006-01-20 2007-07-25 株式会社电装 Heat exchanger and refrigerant cycle device using the same
CN201885479U (en) * 2010-12-20 2011-06-29 天津柯瑞斯空调设备有限公司 Variable frequency air cooling cold and hot water unit
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Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2486924Y (en) * 2001-05-30 2002-04-17 武汉新世界制冷工业有限公司 Large and medium ammonia refrigeration unit
JP2004239493A (en) * 2003-02-05 2004-08-26 Denso Corp Heat pump cycle
WO2006033378A1 (en) * 2004-09-22 2006-03-30 Denso Corporation Ejector type refrigeration cycle
JP2007057177A (en) * 2005-08-25 2007-03-08 Denso Corp Vapor compression type refrigerating cycle device
JP2007147198A (en) * 2005-11-29 2007-06-14 Denso Corp Vapor compression type refrigeration cycle using ejector, and its low-pressure-system component
CN101004327A (en) * 2006-01-20 2007-07-25 株式会社电装 Heat exchanger and refrigerant cycle device using the same
CN201885479U (en) * 2010-12-20 2011-06-29 天津柯瑞斯空调设备有限公司 Variable frequency air cooling cold and hot water unit
CN202734344U (en) * 2012-07-05 2013-02-13 泰豪科技股份有限公司 Low temperature enthalpy increasing family type central air conditioner
CN204787413U (en) * 2015-05-22 2015-11-18 南京五洲制冷集团有限公司 Slab evaporation -condensation formula hot and cold water unit

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Application publication date: 20170104