CN203011008U - Multi-branch outdoor heat exchanger with synchronous heat exchange - Google Patents
Multi-branch outdoor heat exchanger with synchronous heat exchange Download PDFInfo
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- CN203011008U CN203011008U CN 201220586016 CN201220586016U CN203011008U CN 203011008 U CN203011008 U CN 203011008U CN 201220586016 CN201220586016 CN 201220586016 CN 201220586016 U CN201220586016 U CN 201220586016U CN 203011008 U CN203011008 U CN 203011008U
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Abstract
The utility model discloses a multi-branch outdoor heat exchanger with synchronous heat exchange. The multi-branch outdoor heat exchanger with the synchronous heat exchange comprises an overheating coil pipe, a multi-branch heat exchanging coil pipe, a supercooling coil pipe, a high-temperature liquid storage tank and a draught fan, wherein the overheating coil pipe and the supercooling coil pipe are arranged at a position, with a worst heat exchanging effect, in the outdoor heat exchanger and at a position, with a best heat exchanging effect, in the outdoor heat exchanger, and the overheating coil pipe and the supercooling coil pipe are parallel to the multi-branch heat exchanging coil pipe. The multi-branch outdoor heat exchanger with the synchronous heat exchange is suitable for various air conditioner systems, and can effectively solve the problem of loss of a supercooling degree, enhance operation stability and reliability of an expansion valve, prevent a compressor from carrying out wet compression, and effectively improve system efficiency and safety and reliability of operation.
Description
Technical field
The utility model relates to a kind of multiple branch circuit outdoor heat exchanger, is a kind of multiple branch circuit outdoor heat exchanger of synchronous heat exchange specifically, belongs to the Building Environment and Equipment Engineering technical field.
Background technology
The multiple branch circuit outdoor heat exchanger is a kind of refrigerant fluid and room air fluid generation forced heat-exchanging of making, thereby changes a kind of dividing wall type heat exchanger of refrigerant temperature.The outdoor heat exchanger great majority do not have supercooling apparatus at present, and minority is furnished with supercooling apparatus, also often due to the unreasonable layout of sub-cooling coil, greatly reduces the cold effect of mistake of system reality, is difficult to improve the Energy Efficiency Ratio of system.Prior art unrealized synchronous heat exchange in addition, general outdoor heat exchanger is only applicable to the single cold type air-conditioning system, for heat pump type air conditioner system, must adopt special heat exchanger, if adopt this type of heat exchanger will inevitably have influence on the stability of expansion valve.
Patent of invention CN101576297 B big supercooling degree completely fresh wind air-treatment unit, do not consider the problem that the cold-producing medium degree of supercooling is controlled.Its outdoor heat exchanger is not taked supercooling apparatus, is difficult in heating circulation guarantee that cold-producing medium forms certain degree of supercooling after the experience heat exchanger, thereby has affected high efficiency and the stability of expansion valve work.In addition, it should be noted that the refrigerant superheat degree of compressor inlet often needs to be controlled at 5 ℃～11 ℃: the degree of superheat is too low, and compressor easily forms Wet Compression, affects stability and the security of refrigeration system; The degree of superheat is too high, and the delivery temperature of compressor is too high, and the input power of compressor increases, and the performance of brand new air processing group reduces, and its stability and security simultaneously also can not be guaranteed.So this patent indoor heat exchanger is not taked superheater, can not guarantee to enter the certain degree of superheat of refrigerant gas of compressor in kind of refrigeration cycle, this will inevitably have influence on security and the stability of system.
The Chinese patent net discloses a kind of equipment of the air heat-exchange with sub-cooling coil (patent No. CN 2594736Y), in running, cold-producing medium enters in air heat exchanger and the air heat-exchange condensation, enter reservoir after converging into a road, from reservoir, cold-producing medium out enters sub-cooling coil and carried out cold treatment, thereby improved the degree of supercooling of cold-producing medium, and played the icing effect in heat exchanger bottom that prevents.
Inhomogeneous due to the air side flow field, each branch road heat exchange of multiple branch circuit condenser coil is also inhomogeneous, some branch road good effect of heat exchange, and some branch road heat transfer effects are bad.The branch road of good effect of heat exchange, the abundant condensation of cold-producing medium, obtained larger cold-producing medium degree of supercooling; The branch road that heat transfer effect is bad, cold-producing medium can not complete abundant condensation, and the degree of supercooling of cold-producing medium is not high or there is no a degree of supercooling.The branch road that good effect of heat exchange, degree of supercooling are large and the branch road that heat transfer effect is bad, degree of supercooling is little, converge into the reservoir that enters of one brain behind a road.Due to the gas-liquid two-phase effect of reservoir, the degree of supercooling of refrigeration system is suppressed together, even the branch road of good effect of heat exchange has obtained very large cold-producing medium degree of supercooling, also under the gas-liquid two-phase effect of reservoir, is consumed totally.
Cold-producing medium from reservoir out after, then enter sub-cooling coil and obtain again certain degree of supercooling, can be described as the remedial measure of doing something against one's will.
So, the cold-producing medium that utility model patent CN 2594736Y has sacrificed with the air heat-exchange equipment of sub-cooling coil the branch road that heat exchange is good is on the one hand crossed cold energy power, the area that must increase on the other hand sub-cooling coil makes up and regains in other words the degree of supercooling that refrigeration system needs, reduce first the heat transfer effect of condenser, reduced the refrigeration efficiency ratio of refrigeration system; Second virtually increase the area of sub-cooling coil, improved the initial cost of equipment.
Summary of the invention
technical problem:the defect existed for prior art, the utility model provides a kind of can effectively the solution to obtain the problem of degree of supercooling loss, increase the degree of supercooling that heats cold-producing medium in process and the degree of superheat of controlling cold-producing medium in process of refrigerastion, the service behaviour of raising system and security performance, improve the multiple branch circuit outdoor heat exchanger of the synchronous heat exchange of system conditions.
technical scheme:the multiple branch circuit outdoor heat exchanger that heat exchange of the present utility model is synchronous, comprised hot coil, the multiple branch circuit heat exchange coil, sub-cooling coil, high pressure fluid reservoir and blower fan, cross hot coil and sub-cooling coil and be separately positioned on poor with the most best position of heat transfer effect in outdoor heat exchanger parallel with the multiple branch circuit heat exchange coil, the refrigeration outlet of crossing hot coil is connected with the refrigeration import of multiple branch circuit heat exchange coil, in the multiple branch circuit heat exchange coil heat transfer effect the refrigeration outlet of the heat exchange coil of poor branch road with the refrigeration import of high pressure fluid reservoir, be connected, after being connected by pipeline, the refrigeration outlet of the refrigeration outlet of high pressure fluid reservoir and the heat exchange coil of other branch roads in the multiple branch circuit heat exchange coil jointly with the refrigeration import of outdoor sub-cooling coil, is connected again, blower fan is in air-out one side of outdoor heat exchanger.
The utility model sub-cooling coil is arranged on the best position of heat transfer effect in the multiple branch circuit outdoor heat exchanger parallel with the multiple branch circuit heat exchange coil.Why sub-cooling coil is placed in heat exchanger and the best place of air heat-exchange effect, purpose is exactly in order to improve the degree of supercooling of system, the degree of supercooling that guarantees cold-producing medium at least is greater than 3 ℃, when big supercooling degree can be guaranteed by expansion valve, cold-producing medium exists without bubble, has strengthened stability and the reliability of expansion valve work.Simultaneously, arranging of sub-cooling coil improved the outdoor heat exchanger heat exchange area, can strengthen heat transfer effect, improves heating capacity.When device of the present utility model is done refrigerating operaton, cold-producing medium collects and enters wherein after multiple branch circuit heat exchange coil and air heat-exchange, obtains certain degree of supercooling.
The utility model is crossed hot coil and is arranged on the poorest position of heat transfer effect in the multiple branch circuit outdoor heat exchanger parallel with the multiple branch circuit heat exchange coil.Why cross hot coil and be placed in heat exchanger and the poorest place of air heat-exchange effect, purpose is to guarantee that system has certain degree of superheat, generally is greater than 5 ℃, to guarantee the trouble free service of compressor.But control to some extent, the degree of superheat is not the bigger the better, generally not over 11 ℃.That is to say, the degree of superheat of refrigeration system need to be controlled in the interval of 5～11 ℃.When device of the present utility model is done heating operation, cold-producing medium collects and enters wherein after multiple branch circuit heat exchange coil and air heat-exchange, obtains certain degree of superheat.
The refrigeration import of the utility model high pressure fluid reservoir and multiple branch circuit heat exchange coil heat transfer effect the refrigeration outlet of poor branch road are connected, and its refrigeration outlet exports and jointly is connected with the refrigeration import of sub-cooling coil with the refrigeration of other branch roads of multiple branch circuit heat exchange coil.When device of the present utility model is done refrigerating operaton, cold-producing medium, after the poorest branch road of heat transfer effect enters the high pressure fluid reservoir, then gathers with other branch roads, passes through together the sub-cooling coil of the benefit of air heat-exchange effect.Like this, good effect of heat exchange in outdoor heat exchanger (now for condenser), obtain and be fully utilized than the cold-producing medium of big supercooling degree, thereafter poor with heat transfer effect, do not obtain enough degree of supercoolings and experience the refrigerant mixed of reservoir gas-liquid two-phase effect, through one section common sub-cooling coil that heat transfer effect is best, the degree of supercooling of system is improved to greatest extent again.This measure effectively solves and will obtain the problem of degree of supercooling loss, and can suitably reduce the heat exchange area of sub-cooling coil, reduces the initial cost of refrigeration system.
When device of the present utility model is done refrigerating operaton, this installs as condenser.After shunting by liquid distributing device after preliminary heat exchange through hot coil, cold-producing medium stream in heat exchanger enters the multiple branch circuit heat exchange coil, wherein the cold-producing medium in the poorest branch road of heat transfer effect enters the high pressure fluid reservoir, after converging with all the other branch roads again, through the common sub-cooling coil that is positioned at the best branch road of heat transfer effect, carried out cold heat exchange.Cold-producing medium forms certain degree of supercooling, and when big supercooling degree can be guaranteed by expansion valve, cold-producing medium exists without bubble, has strengthened stability and the reliability of expansion valve work.
When device of the present utility model is done heating operation, this installs as evaporimeter.In heat exchanger, cold-producing medium is flowed through, and the preliminary heat exchange of sub-cooling coil directly enters the multiple branch circuit heat exchange coil by liquid distributing device shunting rear portion and air carries out heat exchange, and another part enters the poorest branch road heat exchange of multiple branch circuit heat exchange coil heat transfer effect after the high pressure fluid reservoir again.After this this two-part cold-producing medium after gas collecting apparatus confluxes, enter be positioned at the heat exchange of air effect the poorest place cross hot coil, and fully mix therein, heat exchange.Cold-producing medium forms certain degree of superheat, thereby the refrigerant superheat degree that guarantees compressor inlet has guaranteed the trouble free service of compressor at 5 ℃～11 ℃, has improved stability and the security of refrigeration system.
beneficial effect:the utility model compared with prior art, has the following advantages:
(1) the utility model outdoor heat exchanger includes sub-cooling coil, and sub-cooling coil is arranged in the heat exchanger position best with the air heat-exchange effect.Heat in process, common sub-cooling coil section has improved the degree of supercooling of cold-producing medium greatly, and in the time of guaranteeing by expansion valve, cold-producing medium exists without bubble, strengthens stability and the reliability of expansion valve work, improve the heat transfer effect of outdoor heat exchanger simultaneously, improved heating capacity.
(2) the utility model outdoor heat exchanger included hot coil, crossed hot coil and was arranged in the heat exchanger position the poorest with the air heat-exchange effect.In process of refrigerastion, the degree of superheat of cold-producing medium has been controlled in the setting of crossing hot coil effectively, and the refrigerant superheat degree of assurance compressor inlet, at 5 ℃～11 ℃, has avoided compressor to carry out Wet Compression, makes its stability and security be guaranteed.
(3) the utility model outdoor heat exchanger includes the high pressure fluid reservoir, in the process of refrigerastion process, selectively make in outdoor multiple branch circuit heat exchanger after the poorest branch road of heat transfer effect enters the high pressure fluid reservoir, after converging with all the other branch roads again, carried out cold heat exchange through being arranged in outdoor processing unit heat exchanger with the sub-cooling coil that is positioned at the benefit of air heat-exchange effect together, avoided due to the gas-liquid two-phase effect of the high pressure fluid reservoir degree of supercooling inhibitory action to kind of refrigeration cycle, effectively improve the heat transfer effect of outdoor heat exchanger, improved the degree of supercooling of cold-producing medium.
(4) the utility model outdoor heat exchanger has been realized synchronous heat exchange, widely applicable, not only can be used as the outdoor heat exchanger of single cold type air-conditioning system, also can be used as the outdoor heat exchanger of heat pump type air conditioner system.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of disclosed heat exchanger in prior art;
Fig. 2 is the structure principle chart of the multiple branch circuit outdoor heat exchanger of synchronous heat exchange of the present utility model;
Fig. 3 is the structure chart of embodiment mono-of the present utility model;
Fig. 4 is the air wind speed field polar plot of embodiment mono-of the present utility model;
Fig. 5 is the structure chart of embodiment bis-of the present utility model;
Fig. 6 is the air wind speed field polar plot of embodiment bis-of the present utility model;
Fig. 7 is the structure chart of embodiment tri-of the present utility model;
Fig. 8 is the air wind speed field polar plot of embodiment tri-of the present utility model;
Fig. 9 is the fundamental diagram of the utility model in the single cold type air-conditioning system;
Figure 10 is the fundamental diagram of the utility model in heat pump type air conditioner system.
In figure: 1-crosses hot coil; 2-multiple branch circuit heat exchange coil; The poorest branch road of 21-multiple branch circuit heat exchange coil heat transfer effect; The 3-sub-cooling coil; 4-high pressure fluid reservoir 5-blower fan; The 6-casing; The 61-return air inlet; The 62-air outlet; The 7-compressor; The 8-expansion valve; The 9-four-way change-over valve; The 10-indoor heat exchanger.
The specific embodiment
The multiple branch circuit outdoor heat exchanger of synchronous heat exchange of the present utility model, comprised hot coil 1, multiple branch circuit heat exchange coil 2, sub-cooling coil 3, high pressure fluid reservoir 4 and blower fan 5, cross hot coil 1 and sub-cooling coil 3 and be separately positioned on poor with the most best position of heat transfer effect in outdoor heat exchanger parallel with multiple branch circuit heat exchange coil 2, the refrigeration outlet of crossing hot coil 1 is connected with the refrigeration import of multiple branch circuit heat exchange coil 2, in multiple branch circuit heat exchange coil 2 heat transfer effect the refrigeration outlet of the heat exchange coil 21 of poor branch road with the refrigeration import of high pressure fluid reservoir 4, be connected, after being connected by pipeline, the refrigeration outlet of the refrigeration outlet of high pressure fluid reservoir 4 and the heat exchange coil of other branch roads in multiple branch circuit heat exchange coil 2 jointly with the refrigeration import of outdoor sub-cooling coil 3, is connected again, the heat exchange coil of other branch roads herein refers in multiple branch circuit heat exchange coil 2 except the heat transfer effect heat exchange coil the heat exchange coil 21 of poor branch road.Blower fan 5 is arranged on air-out one side of outdoor heat exchanger.
In the multiple branch circuit outdoor heat exchanger of the synchronous heat exchange of the utility model, the air-out position of blower fan 5 has three kinds: upper air-out, lower air-out, the wind of clearing, corresponding air wind speed field polar plot is upper triangle, lower triangle, equilateral triangle.
Embodiment mono-of the present utility model, i.e. the multiple branch circuit outdoor heat exchanger of the synchronous heat exchange of the first type.The blower fan 5 of the multiple branch circuit outdoor heat exchanger of synchronous heat exchange is upper air-out, and its wind speed profile polar plot meets triangle.In the definite situation of heat exchanger structure form, the upper Triangle-Profile polar plot of this specific air supply mode and wind speed has relation one to one.From upper triangle wind speed profile polar plot, heat exchanger top wind speed is large, therefore when extraneous air is horizontal while plunderring the heat exchanger upper branch and tube refrigerant generation forced heat-exchanging is effective, so a branch road of the utility model outdoor heat exchanger topmost is set to sub-cooling coil 3; Heat exchanger bottom wind speed is little, therefore when extraneous air is horizontal while plunderring the heat exchanger lower leg and the tube refrigerant heat transfer effect is poor, so a branch road of the utility model indoor heat exchanger foot was set to hot coil 1, in multiple branch circuit heat exchange coil 2, with crossing hot coil 1, an adjacent branch road is the poorest branch road 21 of heat transfer effect.In process of refrigerastion, cold-producing medium enters multiple branch circuit outdoor heat exchanger (being now condenser).In heat exchanger cold-producing medium flow through be positioned at heat transfer effect the hot coil 1 of crossing at poor place enter multiple branch circuit heat exchange coil 2 after by the liquid distributing device shunting.Under blower fan 5 powerful air flow field effects, the cold-producing medium in each branch road coil pipe and force air heat exchange, temperature reduces.Wherein the cold-producing medium of the poorest branch road 21 of heat transfer effect enters high pressure fluid reservoir 4, with all the other branch roads, converge again, entered the sub-cooling coil 3 that is positioned at the benefit of air effect heat exchange after gas collecting apparatus collects by cold-producing medium, and fully mix therein, heat exchange, obtain certain degree of supercooling.In heating process, cold-producing medium enters multiple branch circuit outdoor heat exchanger (being now evaporimeter) after the throttling action of the condensation of indoor heat exchanger and expansion valve.In heat exchanger cold-producing medium flow through be positioned at heat transfer effect sub-cooling coil 3 coil pipes at poor place enter multiple branch circuit heat exchange coil 2 by liquid distributing device shunting rear portion, another part is introduced into high pressure fluid reservoir 4, then enters the poorest branch road 21 of multiple branch circuit heat exchange coil heat transfer effect.Under blower fan 5 powerful air flow field effects, the cold-producing medium in each branch road coil pipe and force air heat exchange, temperature rises.After this cold-producing medium after gas collecting apparatus collects, enter be positioned at the heat exchange of air effect the poorest place cross hot coil 1, and fully mix therein, heat exchange, obtain certain degree of superheat.
Embodiment bis-of the present utility model, i.e. the multiple branch circuit outdoor heat exchanger of the synchronous heat exchange of the second type.The blower fan 5 of the multiple branch circuit outdoor heat exchanger of synchronous heat exchange is lower air-out, and its wind speed profile polar plot meets lower triangle.In the definite situation of heat exchanger structure form, the lower Triangle-Profile polar plot of this specific air supply mode and wind speed has relation one to one.From lower triangle wind speed profile polar plot, heat exchanger bottom wind speed is large, therefore when extraneous air is horizontal while plunderring the heat exchanger lower leg and tube refrigerant generation forced heat-exchanging is effective, so a branch road of the utility model indoor heat exchanger foot is set to sub-cooling coil 3; Heat exchanger top wind speed is little, therefore when extraneous air is horizontal while plunderring the heat exchanger upper branch and the tube refrigerant heat transfer effect is poor, so a branch road of the utility model indoor heat exchanger topmost is set to overheated fat coil pipe 1, in multiple branch circuit heat exchange coil 2, with crossing hot coil 1, an adjacent branch road is the poorest branch road 21 of heat transfer effect.In process of refrigerastion, cold-producing medium enters multiple branch circuit outdoor heat exchanger (being now condenser).In heat exchanger cold-producing medium flow through be positioned at heat transfer effect the hot coil 1 of crossing at poor place enter multiple branch circuit heat exchange coil 2 after by the liquid distributing device shunting.Under blower fan 5 powerful air flow field effects, the cold-producing medium in each branch road coil pipe and force air heat exchange, temperature reduces.Wherein the cold-producing medium of the poorest branch road 21 of heat transfer effect enters high pressure fluid reservoir 4, with all the other branch roads, converge again, entered the sub-cooling coil 3 that is positioned at the benefit of air effect heat exchange after gas collecting apparatus collects by cold-producing medium, and fully mix therein, heat exchange, obtain certain degree of supercooling.In heating process, cold-producing medium enters multiple branch circuit outdoor heat exchanger (being now evaporimeter) after the throttling action of the condensation of indoor heat exchanger and expansion valve.In heat exchanger cold-producing medium flow through be positioned at heat transfer effect sub-cooling coil 3 coil pipes at poor place enter multiple branch circuit heat exchange coil 2 by liquid distributing device shunting rear portion, another part is introduced into high pressure fluid reservoir 4, then enters the poorest branch road 21 of multiple branch circuit heat exchange coil heat transfer effect.Under blower fan 5 powerful air flow field effects, the cold-producing medium in each branch road coil pipe and force air heat exchange, temperature rises.After this cold-producing medium after gas collecting apparatus collects, enter be positioned at the heat exchange of air effect the poorest place cross hot coil 1, and fully mix therein, heat exchange, obtain certain degree of superheat.
Embodiment tri-of the present utility model, i.e. the multiple branch circuit outdoor heat exchanger of the synchronous heat exchange of the third type.The blower fan 5 of the multiple branch circuit outdoor heat exchanger of synchronous heat exchange is the wind of clearing, and its wind speed profile polar plot meets equilateral triangle.In the definite situation of heat exchanger structure form, the equilateral triangle distributing vector figure of this specific air supply mode and wind speed has relation one to one.From equilateral triangle wind speed profile polar plot, heat exchanger middle part wind speed is large, therefore when extraneous air is horizontal while plunderring heat exchanger middle part branch road and tube refrigerant generation forced heat-exchanging is effective, so a middle branch road of the utility model indoor heat exchanger is set to sub-cooling coil 3; Heat exchanger top and bottom wind speed are little, therefore when extraneous air is horizontal while plunderring heat exchanger top or lower leg and the tube refrigerant heat transfer effect is poor, cross so arranging of hot coil 1 in indoor heat exchanger three kinds of selection modes are just arranged, respectively that two branch roads of branch road of a branch road, foot of topmost or topmost and foot are simultaneously as crossing hot coil 1, it was hot coil 1 that the present embodiment is selected a branch road of topmost, and in outdoor heat exchanger, foot branch road is the poorest branch road 21 of heat transfer effect so.In process of refrigerastion, cold-producing medium enters multiple branch circuit outdoor heat exchanger (being now condenser).In heat exchanger cold-producing medium flow through be positioned at heat transfer effect the hot coil 1 of crossing at poor place enter multiple branch circuit heat exchange coil 2 after by the liquid distributing device shunting.Under blower fan 5 powerful air flow field effects, the cold-producing medium in each branch road coil pipe and force air heat exchange, temperature reduces.Wherein the cold-producing medium of the poorest branch road 21 of heat transfer effect enters high pressure fluid reservoir 4, with all the other branch roads, converge again, entered the sub-cooling coil 3 that is positioned at the benefit of air effect heat exchange after gas collecting apparatus collects by cold-producing medium, and fully mix therein, heat exchange, obtain certain degree of supercooling.In heating process, cold-producing medium enters multiple branch circuit outdoor heat exchanger (being now evaporimeter) after the throttling action of the condensation of indoor heat exchanger and expansion valve.In heat exchanger cold-producing medium flow through be positioned at heat transfer effect sub-cooling coil 3 coil pipes at poor place enter multiple branch circuit heat exchange coil 2 by liquid distributing device shunting rear portion, another part is introduced into high pressure fluid reservoir 4, then enters the poorest branch road 21 of multiple branch circuit heat exchange coil heat transfer effect.Under blower fan 5 powerful air flow field effects, the cold-producing medium in each branch road coil pipe and force air heat exchange, temperature rises.After this cold-producing medium after gas collecting apparatus collects, enter be positioned at the heat exchange of air effect the poorest place cross hot coil 1, and fully mix therein, heat exchange, obtain certain degree of superheat.
During device work of the present utility model, be arranged in the sub-cooling coil 3 at the best branch road place of heat exchanger and air heat-exchange effect in process of refrigerastion, greatly improved the heat transfer effect of heat exchanger under the potent wind field of blower fan 5, guaranteed the degree of supercooling of cold-producing medium.When big supercooling degree can be guaranteed by expansion valve, cold-producing medium exists without bubble, strengthens stability and the reliability of expansion valve work, has improved the heat transfer effect of outdoor heat exchanger simultaneously.In addition, particularly selectively make in the multiple branch circuit heat exchange coil after the cold-producing medium in the poorest branch road 21 of heat transfer effect enters the high pressure fluid reservoir, after converging with all the other branch roads again, carried out cold heat exchange through being positioned at the best sub-cooling coil of air heat-exchange effect 3 together, avoided due to the gas-liquid two-phase effect of the high pressure fluid reservoir 4 degree of supercooling inhibitory action to kind of refrigeration cycle, effectively improve the heat transfer effect of outdoor heat exchanger, improved the degree of supercooling of cold-producing medium.Be arranged in the degree of superheat that hot coil 1 has been controlled cold-producing medium effectively of crossing at the poorest branch road place of heat exchanger and air heat-exchange effect in heating process, guarantee that the refrigerant superheat degree of compressor inlet is at 5 ℃～11 ℃, avoid compressor to carry out Wet Compression, guaranteed stability and the security of system.
The utility model can be as the outdoor heat exchanger of single cold type air-conditioning system.When the single cold type operation of air conditioner, become high temperature and high pressure gas after the compressed machine 7 of cold-producing medium, enter multiple branch circuit outdoor heat exchanger (for condenser) and force air heat exchange.In heat exchanger cold-producing medium flow through be positioned at heat transfer effect the hot coil 1 of crossing at poor place enter multiple branch circuit heat exchange coil 2 after by the liquid distributing device shunting.Under blower fan 5 powerful air flow field effects, the cold-producing medium in each branch road coil pipe and force air heat exchange, temperature reduces.Wherein the cold-producing medium of the poorest branch road 21 of heat transfer effect enters high pressure fluid reservoir 4, then converges with all the other branch roads, enters the sub-cooling coil 3 that is positioned at the benefit of air effect heat exchange after gas collecting apparatus collects, and fully mix therein, heat exchange, obtain certain degree of supercooling.Refrigerant liquid with big supercooling degree expansion valve 8 of flowing through, after the throttling action of expansion valve 8, temperature further reduces, and refrigerant liquid enters indoor heat exchanger (for evaporimeter) 10 thereafter.The abundant heat exchange of cold-producing medium and air in indoor heat exchanger 10, reduce indoor temperature, finally is back to compressor 7, completes whole kind of refrigeration cycle.Ownership cryogen equipment connects by refrigerant tubing, and cold-producing medium working medium adopts R22, R134a or R410A etc.
The utility model also can be as the outdoor heat exchanger of heat pump type air conditioner system.When heat pump type air conditioner system is done heating operation, become high temperature and high pressure gas after compressed machine 7 compressions of cold-producing medium, enter heat exchange in indoor heat exchanger (being now condenser) 10 through four-way change-over valve 9 effects.The abundant heat exchange of cold-producing medium and air in indoor heat exchanger 10, raise indoor temperature, and it comes by expansion valve 8, and throttling is laggard enters heat exchange in outdoor heat exchanger (being now evaporimeter).In heat exchanger cold-producing medium flow through be positioned at heat transfer effect sub-cooling coil 3 coil pipes at poor place directly enter multiple branch circuit heat exchange coil 2 by a liquid distributing device shunting part, another part enters the poorest branch road 21 of multiple branch circuit heat exchange coil heat transfer effect after high pressure fluid reservoir 4.Under blower fan 5 powerful air flow field effects, the cold-producing medium in each branch road coil pipe and air generation forced heat-exchanging, temperature rises.After this cold-producing medium by gas collecting apparatus collect enter be positioned at the heat exchange of air effect the poorest place cross hot coil 1, and fully mixing, heat exchange therein, obtain certain degree of superheat, guarantee that the refrigerant superheat degree of compressor 7 imports is at 5 ℃～11 ℃, finally return to compressor 7, complete the whole process that heats.Ownership cryogen equipment connects by refrigerant tubing, and cold-producing medium working medium adopts R22, R134a or R410A etc.
Claims (1)
1. the synchronous multiple branch circuit outdoor heat exchanger of heat exchange, it is characterized in that, this outdoor heat exchanger comprised hot coil (1), multiple branch circuit heat exchange coil (2), sub-cooling coil (3), high pressure fluid reservoir (4) and blower fan (5), described hot coil (1) and the sub-cooling coil (3) crossed is separately positioned on poor with the most best position of heat transfer effect in outdoor heat exchanger parallel with multiple branch circuit heat exchange coil (2), the refrigeration outlet of crossing hot coil (1) is connected with the refrigeration import of multiple branch circuit heat exchange coil (2), in multiple branch circuit heat exchange coil (2) heat transfer effect the refrigeration outlet of the heat exchange coil (21) of poor branch road with the refrigeration import of high pressure fluid reservoir (4), be connected, after being connected by pipeline, the refrigeration outlet of the refrigeration outlet of high pressure fluid reservoir (4) and the heat exchange coil of other branch roads in multiple branch circuit heat exchange coil (2) jointly with the refrigeration import of outdoor sub-cooling coil (3), is connected again, described blower fan (5) is arranged on air-out one side of outdoor heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220586016 CN203011008U (en) | 2012-11-08 | 2012-11-08 | Multi-branch outdoor heat exchanger with synchronous heat exchange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220586016 CN203011008U (en) | 2012-11-08 | 2012-11-08 | Multi-branch outdoor heat exchanger with synchronous heat exchange |
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| Publication Number | Publication Date |
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| CN203011008U true CN203011008U (en) | 2013-06-19 |
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| CN 201220586016 Withdrawn - After Issue CN203011008U (en) | 2012-11-08 | 2012-11-08 | Multi-branch outdoor heat exchanger with synchronous heat exchange |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914089A (en) * | 2012-11-08 | 2013-02-06 | 南京师范大学 | Multi-branch outdoor heat exchanger with synchronous heat exchange function |
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2012
- 2012-11-08 CN CN 201220586016 patent/CN203011008U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914089A (en) * | 2012-11-08 | 2013-02-06 | 南京师范大学 | Multi-branch outdoor heat exchanger with synchronous heat exchange function |
| CN102914089B (en) * | 2012-11-08 | 2014-10-15 | 南京师范大学 | Multi-branch outdoor heat exchanger with synchronous heat exchange function |
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