CN201628425U - Special evaporator for heat pipe refrigeration combined air conditioning - Google Patents

Special evaporator for heat pipe refrigeration combined air conditioning Download PDF

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Publication number
CN201628425U
CN201628425U CN2010201432936U CN201020143293U CN201628425U CN 201628425 U CN201628425 U CN 201628425U CN 2010201432936 U CN2010201432936 U CN 2010201432936U CN 201020143293 U CN201020143293 U CN 201020143293U CN 201628425 U CN201628425 U CN 201628425U
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China
Prior art keywords
pipe
tube
heat
heat exchanger
evaporator
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Expired - Lifetime
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CN2010201432936U
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Chinese (zh)
Inventor
石文星
王宝龙
韩林俊
郭忠建
李先庭
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Beijing Shuimu Nenghuan Energy Saving Technology Co ltd
Tsinghua University
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Beijing Shuimu Nenghuan Energy Saving Technology Co ltd
Tsinghua University
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Priority to CN2010201432936U priority Critical patent/CN201628425U/en
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Publication of CN201628425U publication Critical patent/CN201628425U/en
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Abstract

A special evaporator for heat pipe refrigeration combined air conditioning comprises a finned pipe type heat exchanger, a gas collecting pipe, a liquid dividing head, a liquid dividing pipe and a heat exchanging pipe. The special evaporator is characterized in that a liquid collecting pipe is arranged between the heat exchanging pipe and the liquid dividing pipe, the liquid dividing pipe penetrates through the liquid collecting pipe and is inserted into the heat exchanging pipe in an extending manner, the gas collecting pipe adopts a U-shaped pipe comprising a first rising upright pipe, a second rising upright pipe and an oil return elbow, and the heat exchanging pipe is communicated with the first rising upright pipe via the finned pipe type heat exchanger. The special evaporator realizes combination of a steam compression refrigeration mode and a heat pipe natural circulation mode by taking into account of both performance and safety on the same evaporator via special pipeline design, guarantees oil return safety of the steam compression refrigeration mode, and reduces pipeline resistance in the evaporator. The special evaporator is applicable to an evaporator of a heat pipe refrigeration combined air conditioning unit and has the advantages of simple structure, lower cost, evident effect and capabilities of effectively solving the problems of oil return and resistance reduction of like units and improving reliability and high-efficiency performance in running.

Description

A kind of special evaporator for heat-pipe refrigerating hybrid air-conditioner
Technical field
The utility model relates to a kind of special evaporator for heat-pipe refrigerating hybrid air-conditioner, is applicable to the heat-pipe refrigerating hybrid air-conditioner unit, belongs to the refrigeration air-conditioner field.
Background technology
" annual need cold space " is meant that those are excessive or the building enclosure heat radiation is too small because of indoor caloric value, simultaneously since the space instructions for use need keep indoor temperature and be constant at reduced levels, thereby cause the indoor annual refrigeration duty that presents, need the annual air-conditioned room that cold is provided.In recent years, along with China's prosperity of economy and communication, IT, finance, the fast development of relevant industries such as building, all kinds of annual cold space sustainable growths with surprising rapidity that need comprise the mobile base station, IDC data machine room, computer room, the server room, large public building inner region, some technology factory building etc.With the mobile base station is example, and by in September, 2009, the total number of base of China three big mobile service operators has broken through 800,000, and along with the development of 3G and even 4G business, the base station construction of China will enter a sustainable growth period.Simultaneously, because China IT, finance, the data storage that industry high speed developments such as communication expedite the emergence of, with the rapid growth of aspect demand such as transmission, also grow with each passing day in IDC data machine room and other kinds server room alternately.
The air-conditioning type of cooling of existing base station, IDC machine room and server room generally is to adopt the special air conditioning for device room machine, the year round cooling operation.Because the electronics of these interior volume is intensive, heating power is higher, thereby has caused high air-conditioning equipment energy consumption.Simultaneously, when winter, load was low, compressor of air conditioner not only can cause the start and stop energy consumption with frequent start-stop, also can shorten the life-span of compressor.
In order to overcome the above problems, a kind of scheme of heat-pipe refrigerating hybrid air-conditioner unit proposes in succession, as patent coolant natural circulation type unit air-conditioning unit (application number: CN200810102064.7), a kind of (application number: CN200910119883.7) etc. of air processor with the natural cold and heat supply function.This class unit organically blends both a shared evaporimeter and condensers with conventional steam compression type refrigerating circulation with the separate heat pipe Natural Circulation.When outdoor temperature was higher, unit operation was in conventional vapor compression refrigeration pattern, and when outdoor temperature is enough low, switched to the heat pipe natural circulation mode, and close compressor is only opened two device blower fans, reaches the effect with the low energy consumption heat radiation.Than the machine room special machine of annual active refrigeration, such unit can make full use of outdoor cold when outdoor temperature is low lowers the temperature to indoor, has reduced the opening time of compressor, thereby can reach energy-saving effect preferably.Simultaneously, because heat pipe pattern and shared two devices of refrigeration mode all can reduce greatly so its cost and maintenance drop into.
Since heat pipe pattern and the shared evaporimeter of refrigeration mode and the condenser of this unit, and in fact, for the optimal design of air cooling fin tubular evaparator, heat pipe pattern and refrigeration mode are also inconsistent.Be used for conventional vapor compression refrigeration unit the air-cooled tube wing-type evaporimeter structure as shown in Figure 1, liquid refrigerant enters heat exchanger tube through liquid-dividing head and separating tube, heat absorption is evaporated to gaseous state, and converges and enter discharge, is sucked up to compressor.And this structure and be not suitable for the heat pipe pattern, reason mainly contains following 3 points.
The first, it is much smaller that the circulation power of heat pipe pattern is compared refrigeration mode, and pipe resistance is very big to its Effect on Performance, adopts bigger liquid-dividing head and the separating tube of resistance will weaken properties of hot pipe largely.
The second, separate refrigeration is less with the discharge caliber of evaporimeter, and the heat exchanger branch road is less, and the flow velocity of cold-producing medium in heat exchanger tube and discharge is bigger, helps oil return.But the evaporimeter resistance that this design brings is bigger, will worsen the performance of heat pipe pattern.If need take into account the heat pipe pattern, increase the heat exchanger branch road, transfer big discharge caliber, then can cause under the refrigeration mode, the cold-producing medium flow velocity in heat exchanger tube and the discharge reduces, and influences the compressor oil return safety of refrigeration mode.The evaporator designs contradiction of resistance and oil return is more outstanding.
The 3rd, will produce a large amount of bubbles when two phase refrigerant is absorbed heat explosive evaporation in the evaporimeter, bubble will tie up the flowing space of cold-producing medium, and will be unfavorable to the smooth discharge of cold-producing medium.For in time discharging these bubbles, each bar cold-producing medium branch road of evaporimeter should be designed to the flow arrangement that streamwise constantly rises in principle.For the evaporimeter of separate refrigeration, because driven compressor power is bigger, bubble is also not obvious to the inhibition that flows, so the not too big restriction of the flow scheme design of every heat exchange arm of evaporimeter.And for the heat pipe pattern, because its power that drives flow of refrigerant is more limited, if follow the design of moving towards of conventional heat exchanger tube, especially similar staggered up and down flow arrangement shown in Figure 1, then bubble will be difficult in time discharge evaporimeter, discharge smoothly thereby seriously hinder refrigerant vapour, influence the heat pipe mode performance greatly.
Evaporimeter is as the basic components of heat-pipe refrigerating hybrid air-conditioner machine, about its structure and design directly the performance of combined air conditioner machine, be fit to the evaporimeter that the heat-pipe refrigerating hybrid air-conditioner machine uses so need research and development badly, break through the problem that conventional evaporator exists, accelerate the research and development and the popularization process of heat-pipe refrigerating hybrid air-conditioner machine, for the energy-saving and emission-reduction work of air conditioner industry and country is contributed share.
The utility model content
Defective at prior art exists the utility model proposes a kind of special evaporator for heat-pipe refrigerating hybrid air-conditioner, is used for the heat-pipe refrigerating hybrid air-conditioner unit, solves the oil return of conventional evaporator, and problems such as resistance improve compound unit reliability of operation and high efficiency.
The technical solution of the utility model is as follows:
A kind of special evaporator for heat-pipe refrigerating hybrid air-conditioner, contain fin-tube heat exchanger, discharge, liquid-dividing head, separating tube and heat exchanger tube, it is characterized in that: between described heat exchanger tube and separating tube collector tube is set, heat exchanger tube and collector tube are connected, and separating tube passes collector tube and inserts and extend in the heat exchanger tube; Described discharge adopts U type pipe, and this U type pipe is by the first rising standpipe, the second rising standpipe and curved composition of oil return of connecting the first rising standpipe and the second rising standpipe, and described heat exchanger tube is communicated with the described first rising standpipe by fin-tube heat exchanger; Heat exchanger tube from collector tube to each branch road the first rising standpipe is the rising mode and arranges.
The utility model has carried out effective improvement and perfect by above technical scheme to the deficiency that prior art exists, and has improved the reliability and the energy saving of heat-pipe refrigerating hybrid air-conditioner unit operation.Mainly show following three aspects.
The first, owing to be provided with collector tube, during the heat pipe pattern, cold-producing medium will enter evaporimeter from the collector tube upper end, and than entering from liquid-dividing head, resistance reduces greatly.Simultaneously, extend in the heat exchanger tube because separating tube passes collector tube and inserts, the flow of refrigerant situation of refrigeration mode is also uninfluenced.
The second, U type pipe has solved the contradiction of evaporimeter oil return and resistance.The heat exchange branch road of evaporimeter can suitably increase, and discharge can suitably increase.It is curved that the lubricating oil that stockpiles in the evaporimeter during heat pipe mode operation will come together in oil return gradually, in case system switches to refrigeration mode, first rising standpipe upper end is closed, and cold-producing medium will return compressor from the second rising standpipe, and the lubricating oil of oil return in curved also will be taken back in the compressor.For the situation that continues the refrigeration mode operation, U type pipe will ensure the oil return safety of compressor equally.
The 3rd and since the heat exchange arm move towards in rising trend, get rid of evaporimeter smoothly thereby help evaporated refrigerant vapor, keep flow of refrigerant smooth and easy, improve the heat dissipation capacity and the stability of heat pipe pattern.
Description of drawings
Fig. 1 is the structure chart that is used for the air-cooled tube wing-type evaporimeter of conventional vapor compression refrigeration unit.
The structure principle chart of " a kind of special evaporator for heat-pipe refrigerating hybrid air-conditioner " that Fig. 2 provides for the utility model.
Fig. 3 is the amplification assumption diagram at A place among Fig. 2.
The working state figure of special evaporator in the heat-pipe refrigerating hybrid air-conditioner system that Fig. 4, Fig. 5 provide for the utility model.
The name of each parts is called among Fig. 1 to Fig. 5:
Among the figure: the 1-fin-tube heat exchanger; The 2-collector tube; The 3-discharge; The 4-liquid-dividing head; The 5-oil return is curved; The 6a-first rising standpipe; The 6b-second rising standpipe; The 7-separating tube; The 9-heat exchanger tube; The 10-compressor; The 12-triple valve; The 13-condenser; 14-heat pipe two-port valve; The 15-expansion valve; The 16a-first rising standpipe; The 16b-second rising standpipe.
The specific embodiment
Below in conjunction with accompanying drawing structure of the present utility model, principle and the course of work are described further.
Fig. 2, Fig. 3 are the structure principle chart of the utility model disclosed " special evaporator for heat-pipe refrigerating hybrid air-conditioner ".This special evaporator for heat-pipe refrigerating hybrid air-conditioner, contain fin-tube heat exchanger 1, discharge 3, liquid-dividing head 4, separating tube 7 and heat exchanger tube 9, between described heat exchanger tube 9 and separating tube 7 collector tube 2 is set, heat exchanger tube 9 and collector tube 2 are connected, and separating tube 7 passes collector tube 2 and inserts and extend in the heat exchanger tube 9; Described discharge 3 adopts U type pipe, this U type pipe is made up of the first rising standpipe 6a, the second rising standpipe 6b and the oil return curved 5 that connects the first rising standpipe and the second rising standpipe, and described heat exchanger tube 9 passes through fin-tube heat exchanger 1 and is communicated with the described first rising standpipe 6a; Being the rising mode from the heat exchanger tube 9 of each branch road collector tube 2 to the first rising standpipe 6a arranges.
Wherein the concrete annexation of separating tube 7 and collector tube 2 and heat exchanger tube 9 as shown in Figure 3.Being the rising mode from the heat exchanger tube 9 of each branch road collector tube 2 to the first rising standpipe 6a arranges, after being meant the moving towards layout and make that cold-producing medium enters heat exchanger tube 9 from collector tube 2 of heat exchanger tube 9, it flows to and is horizontal direction, diagonal upward direction or direction vertically upward are until cold-producing medium enters in the U type pipe.
The working state figure of special evaporator in the heat-pipe refrigerating hybrid air-conditioner system that Fig. 4, Fig. 5 provide for the utility model.
For ease of explanation, special with in the disclosed evaporimeter access of the utility model heat-pipe refrigerating hybrid air-conditioner system, its connected mode is: liquid-dividing head 4 links to each other with the outlet of condenser 13 by expansion valve 15, collector tube 2 links to each other with the outlet of condenser 13 by heat pipe two-port valve 14, the second rising standpipe 6b links to each other with the air entry of compressor 10, and the exhaust outlet of the first rising standpipe 6a, compressor 10 and the inlet of condenser 13 link to each other by triple valve 12.
Fig. 4 is the refrigerating operaton pattern of heat-pipe refrigerating hybrid air-conditioner.Heat pipe two-port valve 14 cuts out, and compressor 10 is opened, and triple valve 12 switches to the first rising standpipe 6a and compressor 10 blast pipes disconnect, the valve position state that is communicated with condenser 13 inlets.Cold-producing medium is condensed into liquid state in condenser 13, through expansion valve 15 throttlings is the two-phase state, divided equally to separating tube 7 by liquid-dividing head 4 subsequently, enter heat exchanger tube 9, cold-producing medium is collected among the first rising standpipe 6a after absorbing heat in heat exchanger tube 9 and evaporating, and returns compressor through the curved 5 and second rising standpipe 6b of oil return at last.
Fig. 5 is the heat pipe operational mode of heat-pipe refrigerating hybrid air-conditioner.Heat pipe two-port valve 14 is opened, and compressor 10 cuts out, and triple valve 12 switches to the first rising standpipe 6a and is communicated with condenser 13 inlets, with the valve position state of compressor 10 blast pipes disconnection.Under the effect of liquid refrigerant that condenser 13 condensations are got off, enter in the collector tube 2 through heat pipe two-port valve 14 at gravity, and enter the evaporimeter heat exchanger tube 9 in the space between heat exchanger tube 9 inwalls and separating tube 1 outer wall, the heat exchanger tube 9 of gaseous refrigerant after the heat absorption evaporation through being the rising mode and arranging enters among the first rising standpipe 6a, and discharge from the upper end of the first rising standpipe 6a, in triple valve 12 return condensed devices 13.

Claims (1)

1. special evaporator for heat-pipe refrigerating hybrid air-conditioner, contain fin-tube heat exchanger (1), discharge (3), liquid-dividing head (4), separating tube (7) and heat exchanger tube (9), it is characterized in that: between described heat exchanger tube (9) and separating tube (7) collector tube (2) is set, described heat exchanger tube (9) and collector tube (2) are connected, and described separating tube (7) passes collector tube (2) and inserts and extend in the heat exchanger tube (9); Described discharge (3) adopts U type pipe, this U type pipe is made up of the first rising standpipe (6a), the second rising standpipe (6b) and the oil return curved (5) that connects the first rising standpipe and the second rising standpipe, and described heat exchanger tube (9) passes through fin-tube heat exchanger (1) and is communicated with the described first rising standpipe (6a); Heat exchanger tube (9) from collector tube (2) to each branch road the first rising standpipe (6a) is the rising mode and arranges.
CN2010201432936U 2010-03-25 2010-03-25 Special evaporator for heat pipe refrigeration combined air conditioning Expired - Lifetime CN201628425U (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103217310A (en) * 2013-04-28 2013-07-24 宁波沃弗圣龙环境技术有限公司 Food freezer performance test device
CN103234298A (en) * 2013-04-28 2013-08-07 南京师范大学 Refrigerating circuit for air conditioning refrigeration device performance testing device
CN103913018A (en) * 2013-07-24 2014-07-09 劳特斯空调(江苏)有限公司 Finned tube air-cooled heat exchanger
CN104567128A (en) * 2013-10-23 2015-04-29 珠海格力电器股份有限公司 Liquid supply device and refrigerating unit
CN108748770A (en) * 2018-05-29 2018-11-06 鹤山联塑实业发展有限公司 A kind of accurate quantification automatic filling control system and the device using the system
WO2023226469A1 (en) * 2022-05-25 2023-11-30 青岛海尔空调电子有限公司 Heat pump air conditioning unit and control method therefor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103217310A (en) * 2013-04-28 2013-07-24 宁波沃弗圣龙环境技术有限公司 Food freezer performance test device
CN103234298A (en) * 2013-04-28 2013-08-07 南京师范大学 Refrigerating circuit for air conditioning refrigeration device performance testing device
CN103234298B (en) * 2013-04-28 2015-07-08 南京师范大学 Refrigerating circuit for air conditioning refrigeration device performance testing device
CN103217310B (en) * 2013-04-28 2016-05-25 南京师范大学 A kind of food refrigerator performance testing device
CN103913018A (en) * 2013-07-24 2014-07-09 劳特斯空调(江苏)有限公司 Finned tube air-cooled heat exchanger
CN104567128A (en) * 2013-10-23 2015-04-29 珠海格力电器股份有限公司 Liquid supply device and refrigerating unit
CN108748770A (en) * 2018-05-29 2018-11-06 鹤山联塑实业发展有限公司 A kind of accurate quantification automatic filling control system and the device using the system
WO2023226469A1 (en) * 2022-05-25 2023-11-30 青岛海尔空调电子有限公司 Heat pump air conditioning unit and control method therefor

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AV01 Patent right actively abandoned

Granted publication date: 20101110

Effective date of abandoning: 20111026

AV01 Patent right actively abandoned

Granted publication date: 20101110

Effective date of abandoning: 20111026