CN209415704U - Heat-recovering fresh air system - Google Patents
Heat-recovering fresh air system Download PDFInfo
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- CN209415704U CN209415704U CN201821873355.1U CN201821873355U CN209415704U CN 209415704 U CN209415704 U CN 209415704U CN 201821873355 U CN201821873355 U CN 201821873355U CN 209415704 U CN209415704 U CN 209415704U
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- 238000007789 sealing Methods 0.000 claims description 15
- 230000002411 adverse Effects 0.000 claims description 6
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- 239000000463 material Substances 0.000 abstract description 5
- 238000012864 cross contamination Methods 0.000 abstract description 4
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Abstract
The utility model relates to fresh air system fields, provide a kind of heat-recovering fresh air system, it include: fresh air system ontology, fresh air gas-liquid counter current micro-channel heat exchanger and air draft gas-liquid counter current micro-channel heat exchanger, fresh air system ontology includes fresh inlet, fresh air outlet, air draft import, wind exhausting outlet and refrigerant passage, and refrigerant and back flow of gas in fresh air liquid contra-flow heat exchanger and air draft gas-liquid counter current micro-channel heat exchanger exchange heat；Fresh inlet, first gas passage and fresh air outlet are sequentially communicated, and air draft import, second gas channel and wind exhausting outlet are sequentially communicated, and the first fluid passage, refrigerant passage and second liquid channel connect into closed circulation channel.The utility model avoids cross contamination in such a way that fresh air and refrigerant, air draft and refrigerant carry out gas-liquid counter current heat exchange, improves heat exchange efficiency；Reduce refrigerant usage amount simultaneously, reduces the energy consumption of circulating pump；Consumptive material is low, and structure is simple, low in cost.
Description
Technical field
The utility model relates to fresh air system technical fields, more particularly to a kind of heat-recovering fresh air system.
Background technique
Currently, building energy consumption occupies very high specific gravity in social total energy consumption, Heating,Ventilating and Air Conditioning energy consumption is the master of building energy consumption again
Want part.It is necessary to reduce building energy consumption by optimization system, Terminal device, energy-saving and emission-reduction are realized.
Recuperation of heat in fresh air system has been widely used in engineering as a kind of power-saving technology means.It is wide at present
The heat recovery apparatus of the fresh air system of general application has rotary-type recuperation of heat, heat exchange of heat pipe recuperation of heat, plate-fin recuperation of heat, centre
Refrigerant heat exchanger recuperation of heat etc..Heat exchanger is widely used in heating ventilation air-conditioning system, including the acquisition of refrigeration unit, outdoor heat source
Device and room air handle end.
Heat recovery system be recycle building inside and outside waste heat (cold) or waste heat (cold) and using the heat of recycling it is (cold) amount as
Heat (cold) source of heat supply (cold) or other heating (refrigeration) equipment and the system that is used.Intermediate refrigerant heat exchanger recuperation of heat side
Method refers in fresh air and air draft side, uses a gas-liquid heat-exchange respectively, the air stream of air draft side is out-of-date, to the refrigerant in system
Heated (or cooling)；And heat (or cooling capacity) is passed into the new of entrance again in the refrigerant that fresh air side is heated (or cooling)
Wind, refrigerant constantly recycle under the action of pump.Fresh air and air draft will not generate cross contamination, utilize for hot side with hot side is obtained
Pipeline, pipeline can extend, and flexible arrangement is convenient.
In the clean air conditioners such as pharmacy, electronics and operating room field, fresh air volume is relatively large with exhaust air rate, using recuperation of heat system
It unites available good energy-saving effect.It is arranged and is dispersed due to exhaust system equipment, most of fresh air is centralized processing, will be arranged
Wind puts together that rear transmission & distribution energy consumption is high, air hose size is big, and cost is high, and avoid the need for cross contamination, therefore usually in use
Between refrigerant (liquid circulated) heat recovery system carry out dispersion recycling.
Limitation of the existing intermediate refrigerant type heat recovery technology due to hot systems structure, intermediate refrigerant type gas liquid exchanger
It is generally positioned to cross-current heat transfer form, lead to that heat exchange efficiency and heat recovery efficiency are lower, recuperation of heat is with high costs etc. asks
Topic.
Utility model content
(1) technical problems to be solved
The purpose of the utility model is to provide a kind of heat-recovering fresh air systems, and consumptive material is more in the prior art, structure is multiple for solution
Problem miscellaneous, heat exchange efficiency is low and with high costs.
(2) technical solution
In order to solve the above-mentioned technical problem, the utility model provides a kind of heat-recovering fresh air system, comprising: fresh air system sheet
Body, fresh air gas-liquid counter current micro-channel heat exchanger and air draft gas-liquid counter current micro-channel heat exchanger, the fresh air system ontology include
Fresh inlet, fresh air outlet, air draft import, wind exhausting outlet and refrigerant passage, the fresh air liquid contra-flow heat exchanger include first
Fluid passage and first gas passage, the back flow of gas in refrigerant and the first gas passage in first fluid passage
Heat exchange, the air draft gas-liquid counter current micro-channel heat exchanger includes second liquid channel and second gas channel, the second liquid
The back flow of gas in refrigerant and the second gas channel in channel exchanges heat；The fresh inlet, the first gas passage
It is sequentially communicated with fresh air outlet, the air draft import, the second gas channel and the wind exhausting outlet are sequentially communicated, institute
It states the first fluid passage, the refrigerant passage and the second liquid channel and connects into closed circulation channel.
Wherein, first fluid passage and the second liquid channel include the input duct for being set to top, tube sheet
With the liquid outlet pipe for being set to bottom, the tube sheet has a first through hole, the input duct and the liquid outlet pipe be equipped with
The second hole that the first through hole matches, the input duct are connect by the tube sheet with the liquid outlet pipe, and described
One gas passage is set between the corresponding tube sheet of first fluid passage, and the second gas channel is set to described second
Between the corresponding tube sheet of fluid passage.
Wherein, the fresh air gas-liquid counter current micro-channel heat exchanger includes with the air draft gas-liquid counter current micro-channel heat exchanger
Top cover labyrinth and lower sealing cover, the top cover labyrinth and lower sealing cover are respectively arranged in the top and bottom of the tube sheet, and
The input duct is set in the top cover labyrinth, and the liquid outlet pipe is set in the lower sealing cover.
Wherein, the fresh air gas-liquid counter current micro-channel heat exchanger includes with the air draft gas-liquid counter current micro-channel heat exchanger
Fin, the fin are set in the first gas passage and the second gas channel, and respectively with corresponding described first
The tube sheet of fluid passage or the tube sheet in the second liquid channel are connected.
Wherein, which is characterized in that the fresh air gas-liquid counter current micro-channel heat exchanger and air draft gas-liquid counter current microchannel
The cross-sectional shape of heat exchanger is rectangle, round or ellipse.
Wherein, the air draft gas-liquid counter current micro-channel heat exchanger is multiple, and multiple air draft gas-liquid counter current microchannels are changed
The second liquid channel of hot device is connected in parallel.
It wherein, further include total feed liquid pipeline and total back liquid pipeline, total feed liquid pipeline and total back liquid pipeline are distinguished
It is connected at the two-port of the refrigerant passage, and total feed liquid pipeline and the inlet in each second liquid channel connect
Logical, the liquid outlet in each second liquid channel is connected to total back liquid pipeline.
It wherein, further include exhaust fan and fresh-air fan, the exhaust fan is set to the outlet in the second gas channel
Place, the fresh-air fan are set between the exit of the first gas passage and fresh air outlet.
Wherein, the fresh air gas-liquid counter current micro-channel heat exchanger is multiple, and each fresh air gas-liquid counter current microchannel is changed
First fluid passage of hot device is connected in series, and the first gas of each fresh air gas-liquid counter current micro-channel heat exchanger is logical
Road is connected in series.
(3) beneficial effect
A kind of heat-recovering fresh air system provided by the utility model carries out gas-liquid using fresh air and refrigerant, air draft and refrigerant
The mode of counterflow heat exchange, avoids cross contamination, significantly improves heat exchange efficiency, realizes same recuperation of heat effect with the prior art
Under conditions of, it can reduce refrigerant usage amount, reduce the energy consumption of circulating pump；The utility model consumptive material is low, and structure is simple, heat exchange effect
Rate is high, low in cost.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of heat-recovering fresh air system of the utility model；
Fig. 2 is the fresh air gas-liquid counter current micro-channel heat exchanger or air draft gas-liquid counter current micro-channel heat exchanger of the utility model
Structural schematic diagram；
Fig. 3 is the fresh air gas-liquid counter current micro-channel heat exchanger or air draft gas-liquid counter current micro-channel heat exchanger of the utility model
Exchange heat agent structure schematic diagram；
Fig. 4 is the fresh air gas-liquid counter current micro-channel heat exchanger or air draft gas-liquid counter current micro-channel heat exchanger of the utility model
Cross section view；
Fig. 5 is the fresh air gas-liquid counter current micro-channel heat exchanger or air draft gas-liquid counter current micro-channel heat exchanger of the utility model
The structural schematic diagram of top cover labyrinth；
Fig. 6 is the fresh air gas-liquid counter current micro-channel heat exchanger or air draft gas-liquid counter current micro-channel heat exchanger of the utility model
The structural schematic diagram of lower sealing cover；
Fig. 7 is the fresh air gas-liquid counter current micro-channel heat exchanger or air draft gas-liquid counter current micro-channel heat exchanger of the utility model
Tube sheet deployed configuration schematic diagram.
In figure, the 1, first air draft air-conditioning box；2, the second air draft air-conditioning box；3, third air draft air-conditioning box；4, first row general mood
Liquid adverse current micro-channel heat exchanger；5, second row wind gas-liquid counter current micro-channel heat exchanger；6, third air draft gas-liquid counter current microchannel is changed
Hot device；7, the first exhaust fan；8, the second exhaust fan；9, third exhaust fan；10, first row wind inlet；11, the second air draft
Import；12, third air draft import；13, the first wind exhausting outlet；14, the second wind exhausting outlet；15, third wind exhausting outlet；16, first
Refrigerant inlet；17, the second refrigerant inlet；18, third refrigerant inlet；19, the first refrigerant exit；20, the second refrigerant exit；21,
Third refrigerant exit；22, total feed liquid pipeline；23, total back liquid pipeline；24, the first fresh air gas-liquid counter current micro-channel heat exchanger；25,
Second fresh air gas-liquid counter current micro-channel heat exchanger；26, third fresh air gas-liquid counter current micro-channel heat exchanger；27, fresh air exports；28,
Fresh inlet；29, the 4th refrigerant exit；30, the 4th refrigerant inlet；31, circulating pump；32, water treatment facilities；33, the first room；
34, the second room；35, third room；36, new bellows；101, top cover labyrinth；102, exchange heat main body；103, lower sealing cover；104,
Input duct；105, liquid outlet pipe；106, first gas passage (or second gas channel)；107, tube sheet；108, fin.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Example is not intended to limit the scope of the present invention for illustrating the utility model.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
As shown in Fig. 1-Fig. 7, the utility model discloses a kind of heat-recovering fresh air system, comprising: fresh air system ontology, fresh air
Gas-liquid counter current micro-channel heat exchanger and air draft gas-liquid counter current micro-channel heat exchanger, fresh air system ontology includes fresh inlet, new
Wind outlet, air draft import, wind exhausting outlet and refrigerant passage, fresh air liquid contra-flow heat exchanger include the first fluid passage and the first gas
Body channel, the back flow of gas heat exchange in the refrigerant and first gas passage in the first fluid passage, air draft gas-liquid counter current microchannel
Heat exchanger includes second liquid channel and second gas channel, the gas in refrigerant and second gas channel in second liquid channel
Body counterflow heat exchange；Fresh inlet, first gas passage and fresh air outlet are sequentially communicated, air draft import, second gas channel and row
Wind outlet is sequentially communicated, and the first fluid passage, refrigerant passage and second liquid channel connect into closed circulation channel.
Specifically, the heat exchange mode using gas-liquid counter current of the utility model innovation replaces the gas-liquid cross-current of the prior art
Heat exchange mode, specific embodiment can be with are as follows: the refrigerant of the first fluid passage from top to bottom flows, and first gas passage
The supreme flowing in gas bottom right, so that refrigerant and gas is carried out counterflow heat exchange, similarly, second liquid channel and second gas channel cloth
It sets identical.The refrigerant that the utility model uses can be water or anti-icing fluid etc., be also possible to other liquid Jie according to actual needs
Matter or gas-liquid phase transition medium, phase-change liquid etc..It is disposed with circulating pump 31 and water treatment facilities 32 in refrigerant passage, circulating pump 31 is given
Refrigerant therein provides circulation driving force, and water treatment facilities 32 is used to filter the large granular impurity in refrigerant, guarantees changing for refrigerant
The thermal efficiency.The utility model relates to the fresh air gas-liquid counter current micro-channel heat exchanger arrived and air draft gas-liquid counter current micro-channel heat exchangers
It is all made of micro-channel heat exchanger, the water conservancy diameter of heat exchange pipeline is less than 1mm, good effect of heat exchange.
A kind of heat-recovering fresh air system provided by the utility model carries out gas-liquid using fresh air and refrigerant, air draft and refrigerant
The mode of counterflow heat exchange, improves heat exchange efficiency, under conditions of realizing same recuperation of heat effect with the prior art, can reduce
Refrigerant usage amount reduces the energy consumption of circulating pump；The utility model consumptive material is low, and structure is simple, and heat exchange efficiency is high, low in cost.
As illustrated in figs. 2-7, the first fluid passage and second liquid channel include the input duct 104 for being set to top, pipe
Plate 107 and liquid outlet pipe 105 set on bottom, tube sheet 105 have first through hole, and input duct 104 is all provided with liquid outlet pipe 105
There is the second hole to match with first through hole, input duct 104 is connect by tube sheet 107 with liquid outlet pipe 105, and first gas is logical
Road 106 is set between the corresponding tube sheet 107 of the first fluid passage, and it is corresponding that second gas channel 106 is set to second liquid channel
Between tube sheet 107.Specifically, input duct is also used for the inlet of feed liquor in addition to the first hole, likewise, liquid outlet pipe in addition to
First hole is also used for out the liquid outlet of liquid.Fresh air gas-liquid counter current micro-channel heat exchanger and air draft gas-liquid counter current in the present embodiment
The internal structure of micro-channel heat exchanger is similar, but different sizes can be selected to advise according to the air quantity or heat transfer requirements of fresh air and air draft
Lattice, can also make heat exchanger unit, and single heat exchange unit is used alone or multiple heat exchange units are combined use.This reality
It applies the first through hole in example on tube sheet to match with the position in the second hole of input duct and liquid outlet pipe, number, makes each
One through-hole can be correspondingly connected with the second hole.Input duct is identical with the cross-sectional area of liquid outlet pipe, input duct and out liquid
Pipeline is equivalent to general pipeline, and the second hole arranged is equivalent to branch pipe, the cross-sectional area of input duct (or liquid outlet pipe) be greater than or
Equal to the cross-sectional area in each second hole, guarantee that refrigerant can pass through from the second more as far as possible holes, guarantee heat exchange efficiency, and first
Through-hole is identical as the arragement construction in the second hole and position.Refrigerant in the present embodiment is passed through by the second hole of input duct 104
The first through hole of tube sheet 107 is flowed out from the second hole of liquid outlet pipe 105.First gas passage (or second gas channel) 106 is set
Between tube sheet 107, the present embodiment is by the first fluid passage (or second liquid channel) and first gas passage (or second
Gas passage) it rolls realization and is stacked, heat exchange efficiency is high.Further, the water flow of heat exchanger may be arranged to same journey or different
Journey.Further, in this embodiment first through hole and the shape in the second hole can be for rectangular opening, circular hole or elliptical aperture etc..This
The fresh air gas-liquid counter current micro-channel heat exchanger and air draft gas-liquid counter current micro-channel heat exchanger of embodiment, set using the structure of microchannel
Meter, compact-sized, exchange capability of heat improves.Specifically, the tube sheet in the present embodiment is opened on disc different from the prior art
Hole is formed by orifice plate, and the tube sheet in the present embodiment becomes the tube plate structure of multilayer for strip-shaped hole coiled sheet system, wherein strip-shaped hole
In plate perforative hole be the first fluid passage (or second liquid channel), and with first gas passage (or second gas channel) layer
Folded setting.
Preferably, fresh air gas-liquid counter current micro-channel heat exchanger and air draft gas-liquid counter current micro-channel heat exchanger include upper sealing
Lid 101 and lower sealing cover 103, top cover labyrinth 101 and lower sealing cover 103 are respectively arranged in the top and bottom of tube sheet 107, and into
Liquid pipe road 104 is set in top cover labyrinth 101, and liquid outlet pipe 105 is set in lower sealing cover 103.Top cover labyrinth 101 and lower sealing cover
103 are respectively used to for being packaged the top and bottom of tube sheet 107, and are respectively used to accommodate input duct 104 and liquid outlet pipe
105。
Preferably, fresh air gas-liquid counter current micro-channel heat exchanger and air draft gas-liquid counter current micro-channel heat exchanger include fin
108, fin 108 be set to first gas passage 106 and second gas channel 106 in, and respectively with corresponding first fluid passage
Tube sheet or the tube sheet in second liquid channel be connected, can be further improved heat exchange efficiency.Specifically, the quantity of fin 108
The heat exchanged as needed is selected.Fin 108 is plain fin, corrugated fin or shutter wing made of metal material
Piece is also possible to wire mesh etc..
Preferably, the cross-sectional shape of fresh air gas-liquid counter current micro-channel heat exchanger and air draft gas-liquid counter current micro-channel heat exchanger
It can be rectangle, round or ellipse.It according to actual needs, can also be by fresh air gas-liquid counter current micro-channel heat exchanger and air draft gas
Liquid adverse current micro-channel heat exchanger is rolled into other shapes.
Based on the above embodiment, a kind of fresh air gas-liquid counter current micro-channel heat exchanger (air draft gas-liquid is also disclosed in the utility model
Adverse current micro-channel heat exchanger) production method:
The tube sheet for taking one end strip fixes fin in the side of tube sheet, and smears bonding agent on fin；
Tube sheet is rolled into round, rectangle or ellipse etc., heat exchange main body 102 is made, by top cover labyrinth and lower sealing cover point
It is not buckled in the top and bottom of heat exchange main body 102, and first through hole is made to be aligned sealed connection with the second hole；
Tube sheet with top cover labyrinth and lower sealing cover is put into heating device and is heated, then is made by the way that cooling device is cooling
The heat exchanger of cost implementation.
Alternatively it is also possible to process heat exchanger in the way of soldering.The helical tube plate type made of above step is inverse
Heat exchanger is flowed, the first fluid passage (or second liquid channel) is stacked with first gas passage (or second gas channel),
Refrigerant is flowed downward by the second hole of input duct 104, by tube sheet 107 first through hole and liquid outlet pipe 105 second
Hole outflow, exchanges heat with the updraft of first gas passage (or second gas channel) 106, realizes gas-liquid counter current heat exchange,
Heat exchange efficiency is high, and structure and manufacturing process are simple, low manufacture cost.As illustrated in figs. 2-7, the helical tube plate type adverse current of the present embodiment
Heat exchanger forms helical channel by the way of rolling, and simplifies processing method, and shape uses cross section for circular heat exchange
Device is designed using helical channel, and input duct and liquid outlet pipe use arranged tangential, and liquid resistance is small, and heat exchange efficiency is high.
Wherein, air draft gas-liquid counter current micro-channel heat exchanger is multiple, the of multiple air draft gas-liquid counter current micro-channel heat exchangers
Two fluid passages are connected in parallel.Specifically, as shown in Figure 1, the present embodiment carries out installation fresh air system, air draft for three rooms
Gas-liquid counter current micro-channel heat exchanger is also arranged in parallel three, each room one air draft gas-liquid counter current Thermal Performance of Micro Channels of corresponding arrangement
Device is connect by respective air draft import with respective room, and each air draft gas-liquid counter current micro-channel heat exchanger be connected in parallel with
Afterwards, be connected at the two-port of refrigerant passage, make each room can independent air draft, do not interact.According to room number, correspondence is set
The quantity of air draft gas-liquid counter current micro-channel heat exchanger is set, and guarantees that an air draft gas-liquid counter current Thermal Performance of Micro Channels is arranged in each room
Device.
It preferably, further include total feed liquid pipeline 22 and total back liquid pipeline 23, total feed liquid pipeline 22 and total back liquid pipeline 23 divide
It is not connected at the two-port of refrigerant passage, and total feed liquid pipeline 22 is connected to the inlet in each second liquid channel, each second
The liquid outlet of fluid passage is connected to total back liquid pipeline 23.Due to air draft gas-liquid counter current micro-channel heat exchanger quantity be it is multiple,
Therefore multiple second liquid channels are needed to connect with refrigerant passage, the present embodiment collects all liq using total feed liquid pipeline 22 and leads to
The inlet in road, total back liquid pipeline 23 collect all liquid outlets, simplify structure.
It wherein, further include exhaust fan and fresh-air fan, exhaust fan is set to the exit in second gas channel, fresh air wind
Machine is set between the exit of first gas passage and fresh air outlet, and exhaust fan is for driving air draft, and fresh-air fan is for driving
Dynamic fresh air.Specifically, exhaust fan and fresh-air fan in the present embodiment can be using centrifugal fans, axial fan, tiltedly
Flow type fan etc..The number of exhaust fan is consistent with the number of air draft gas-liquid counter current micro-channel heat exchanger.
Wherein, fresh air gas-liquid counter current micro-channel heat exchanger is multiple, and the of each fresh air gas-liquid counter current micro-channel heat exchanger
One fluid passage is connected in series, and the first gas passage of each fresh air gas-liquid counter current micro-channel heat exchanger is connected in series.The present embodiment
Middle fresh air passes sequentially through in each concatenated first gas passage of fresh air gas-liquid counter current micro-channel heat exchanger and the first fluid passage
Refrigerant exchanges heat, and multistage pre-heating heat-exchanging can be carried out to fresh air by multiple heat exchangers, and energy level utilizes, and improves heat exchange effect
Rate.As shown in Figure 1, being connected in the present embodiment using three fresh air gas-liquid counter current micro-channel heat exchangers, according to actual needs
It can change the serial number of fresh air gas-liquid counter current micro-channel heat exchanger.Concatenated fresh air gas-liquid counter current microchannel in the present embodiment
Heat exchanger can use simultaneously with air draft gas-liquid counter current micro-channel heat exchanger in parallel, realize the heat that dispersion air-discharge concentrates fresh air
Recycling and the pre-heat treatment, are further simplified system structure.
A kind of working method of heat-recovering fresh air system is also disclosed in the utility model, comprising:
After fresh air is by fresh inlet and first gas passage, entered the room from fresh air outlet, air draft passes through air draft import
Behind second gas channel, it is discharged from wind exhausting outlet outdoor；
Refrigerant in refrigerant passage carries out gas-liquid counter current with the fresh air in first gas passage by the first fluid passage and changes
Heat carries out gas-liquid counter current heat exchange by the air draft in second liquid channel and second gas channel.
Embodiment 1:
The present embodiment is by taking three rooms as an example, wherein and fresh air gas-liquid counter current micro-channel heat exchanger is connected in series using three,
The mode that three air draft gas-liquid counter current micro-channel heat exchangers are connected in parallel realizes that dispersion air-discharge concentrates the recuperation of heat and preheating of fresh air
Processing.Air draft import includes first row wind inlet 10, second row wind inlet 11 and third air draft import 12, and wind exhausting outlet includes the
One wind exhausting outlet 13, the second wind exhausting outlet 14 and third wind exhausting outlet 15.
By taking winter condition as an example, the present embodiment is that three rooms carry out recuperation of heat.At this point, indoor exhaust wind temperature is higher than outdoor
New air temperature, therefore the heat of indoor exhaust wind should be recycled for preheating fresh air.Low temperature refrigerant pass through total feed liquid pipeline 22 the
One refrigerant inlet 16 enters in the first row wind gas-liquid counter current micro-channel heat exchanger 4 in the first air draft air-conditioning box 1；Low temperature refrigerant
It is micro- logical that the second row wind gas-liquid counter current in the second air draft air-conditioning box 2 is entered by the second refrigerant inlet 17 of total feed liquid pipeline 22
In road heat exchanger 5；Low temperature refrigerant is entered in third air draft air-conditioning box 3 by the third refrigerant inlet 18 of total feed liquid pipeline 22
In third air draft gas-liquid counter current micro-channel heat exchanger 6, in first row wind gas-liquid counter current micro-channel heat exchanger 4, second row general mood liquid
Refrigerant in the first fluid passage in adverse current micro-channel heat exchanger 5 and third air draft gas-liquid counter current micro-channel heat exchanger 6 and its
Back flow of gas heat exchange in corresponding first gas passage.At this point, the high temperature air in the first room 33 is through the first exhaust fan 7
Swabbing action flows into the first air draft air-conditioning box 1 by first row wind inlet 10；The high temperature air in the second room 34 is through the second air draft wind
The swabbing action of machine 8 flows into the second air draft air-conditioning box 2 by second row wind inlet 11；The high temperature air in third room 35 is through third
The swabbing action of exhaust fan 9 flows into the first air draft air-conditioning box 3 by third air draft import 12.Low temperature refrigerant and high temperature air point
Not Tong Guo tube sheet 1-8 and fin 1-9, formed gas-liquid counter current heat exchange.At this point, refrigerant temperature increase, by the first refrigerant exit 19,
Second refrigerant exit 20 and third refrigerant exit 21, which collect, flows into total back liquid pipeline 23；And the heat of air draft is absorbed, temperature drop
It is low, atmosphere is discharged to from the outflow of the first wind exhausting outlet 13 through the first exhaust fan 7；Through the second exhaust fan 8 from the second wind exhausting outlet
14 outflows are discharged to atmosphere；Atmosphere is discharged to from the outflow of third wind exhausting outlet 15 through third exhaust fan 9.Complete multiple groups air draft air-conditioning
After the recuperation of heat of case, the raised liquid of temperature is via circulating pump 31 and the 4th refrigerant inlet 30, into fresh air conditioner case, meanwhile,
Fresh air is flowed by fresh inlet 28, and refrigerant and fresh air successively countercurrently pass through the first fresh air gas-liquid counter current micro-channel heat exchanger 24, the
Two fresh air gas-liquid counter current micro-channel heat exchangers 25 and third fresh air gas-liquid counter current micro-channel heat exchanger 26, the first fresh air gas-liquid counter current
Micro-channel heat exchanger 24, the second fresh air gas-liquid counter current micro-channel heat exchanger 25 and third fresh air gas-liquid counter current micro-channel heat exchanger 26
The back flow of gas in refrigerant and respective second gas channel in interior second liquid channel exchanges heat, and fresh air is heated, by fresh air
36 air outlet 27 of case enters the first room 33, the second room 34 and third room 35, and fluid temperature reduces, through the 4th refrigerant exit
29, then enter back into air draft air-conditioning box recycling heat, the present embodiment by.When summer operating mode, then cooling capacity is recycled from air draft, be used for
Fresh air is pre-chilled.
A kind of heat-recovering fresh air system provided by the utility model carries out gas-liquid using fresh air and refrigerant, air draft and refrigerant
The mode of counterflow heat exchange, improves heat exchange efficiency, under conditions of realizing same recuperation of heat effect with the prior art, can reduce
Refrigerant usage amount reduces the energy consumption of circulating pump；The utility model consumptive material is low, and structure is simple, and heat exchange efficiency is high, low in cost.Into
One step, by changing the structure of heat exchanger, it is process using integral braze-welded mode, by finned Thermal Performance of Micro Channels tube sheet
Round or rectangle helical channel is rolled into, and keeps the insertion of Thermal Performance of Micro Channels tube sheet Inlet and outlet water side pipe plate identical as shape is rolled
The input duct and liquid outlet pipe of structure, integral solder are an entirety, and air inlet direction and water (flow) direction when use are on the contrary, constitute
Counterflow heat exchange form improves heat transfer effect.Further, dispersion row may be implemented by total feed liquid pipeline and total back liquid pipeline
Wind, the recuperation of heat processing technique for concentrating fresh air.Further, concatenated fresh air gas-liquid counter current micro-channel heat exchanger and row in parallel
Wind gas-liquid counter current micro-channel heat exchanger realizes recuperation of heat and the pre-heat treatment that dispersion air-discharge concentrates fresh air, is further simplified and is
System structure.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (9)
1. a kind of heat-recovering fresh air system characterized by comprising fresh air system ontology, fresh air gas-liquid counter current Thermal Performance of Micro Channels
Device and air draft gas-liquid counter current micro-channel heat exchanger, the fresh air system ontology include fresh inlet, fresh air outlet, air draft into
Mouth, wind exhausting outlet and refrigerant passage, the fresh air gas-liquid counter current micro-channel heat exchanger include the first fluid passage and the first gas
Body channel, the back flow of gas in refrigerant and the first gas passage in first fluid passage exchange heat, the air draft gas
Liquid adverse current micro-channel heat exchanger includes second liquid channel and second gas channel, refrigerant and institute in the second liquid channel
State the back flow of gas heat exchange in second gas channel；The fresh inlet, the first gas passage and the fresh air outlet according to
Secondary connection, the air draft import, the second gas channel and the wind exhausting outlet are sequentially communicated, first fluid passage,
The refrigerant passage and the second liquid channel connect into closed circulation channel.
2. heat-recovering fresh air system as described in claim 1, which is characterized in that first fluid passage and second liquid
Body channel includes input duct, tube sheet and the liquid outlet pipe set on bottom set on top, and the tube sheet has first through hole,
The input duct and the liquid outlet pipe are equipped with the second hole to match with the first through hole, and the input duct passes through
The tube sheet is connect with the liquid outlet pipe, and the first gas passage is set to the corresponding tube sheet of first fluid passage
Between, the second gas channel is set between the corresponding tube sheet in the second liquid channel.
3. heat-recovering fresh air system as claimed in claim 2, which is characterized in that the fresh air gas-liquid counter current micro-channel heat exchanger
It include top cover labyrinth and lower sealing cover with the air draft gas-liquid counter current micro-channel heat exchanger, the top cover labyrinth and lower sealing cover
The top and bottom of the tube sheet are respectively arranged in, and the input duct is set in the top cover labyrinth, the liquid outlet pipe
In the lower sealing cover.
4. heat-recovering fresh air system as claimed in claim 2, which is characterized in that the fresh air gas-liquid counter current micro-channel heat exchanger
It include fin with the air draft gas-liquid counter current micro-channel heat exchanger, the fin is set to the first gas passage and described the
In two gas passages, and respectively and described in the tube sheet of corresponding first fluid passage or the second liquid channel
Tube sheet is connected.
5. the heat-recovering fresh air system as described in any one of claim 2-4, which is characterized in that the fresh air gas-liquid counter current
The cross-sectional shape of micro-channel heat exchanger and the air draft gas-liquid counter current micro-channel heat exchanger is rectangle, round or ellipse.
6. heat-recovering fresh air system as described in claim 1, which is characterized in that the air draft gas-liquid counter current micro-channel heat exchanger
To be multiple, the second liquid channel of multiple air draft gas-liquid counter current micro-channel heat exchangers is connected in parallel.
7. heat-recovering fresh air system as claimed in claim 6, which is characterized in that further include total feed liquid pipeline and total liquid back pipe
Road, total feed liquid pipeline and total back liquid pipeline are connected at the two-port of the refrigerant passage, and total confession
Liquid pipe road is connected to the inlet in each second liquid channel, the liquid outlet in each second liquid channel and described total
Back liquid pipeline connection.
8. heat-recovering fresh air system as described in claim 1, which is characterized in that further include exhaust fan and fresh-air fan, institute
The exit that exhaust fan is set to the second gas channel is stated, the fresh-air fan is set to the outlet of the first gas passage
Between place and fresh air outlet.
9. heat-recovering fresh air system as described in claim 1, which is characterized in that the fresh air gas-liquid counter current micro-channel heat exchanger
To be multiple, and first fluid passage of each fresh air gas-liquid counter current micro-channel heat exchanger is connected in series, each fresh air
The first gas passage of gas-liquid counter current micro-channel heat exchanger is connected in series.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821873355.1U CN209415704U (en) | 2018-11-14 | 2018-11-14 | Heat-recovering fresh air system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821873355.1U CN209415704U (en) | 2018-11-14 | 2018-11-14 | Heat-recovering fresh air system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520101A (en) * | 2018-11-14 | 2019-03-26 | 清华大学 | Heat-recovering fresh air system and working method |
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2018
- 2018-11-14 CN CN201821873355.1U patent/CN209415704U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109520101A (en) * | 2018-11-14 | 2019-03-26 | 清华大学 | Heat-recovering fresh air system and working method |
| CN109520101B (en) * | 2018-11-14 | 2024-06-25 | 清华大学 | Heat recovery fresh air system and working method |
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