CN203258925U - Multi-branch indoor heat exchanger synchronous in heat exchanging - Google Patents
Multi-branch indoor heat exchanger synchronous in heat exchanging Download PDFInfo
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- CN203258925U CN203258925U CN 201220586077 CN201220586077U CN203258925U CN 203258925 U CN203258925 U CN 203258925U CN 201220586077 CN201220586077 CN 201220586077 CN 201220586077 U CN201220586077 U CN 201220586077U CN 203258925 U CN203258925 U CN 203258925U
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Abstract
The utility model discloses a multi-branch indoor heat exchanger synchronous in heat exchanging. The multi-branch indoor heat exchanger comprises a supercooling coil pipe, a multi-branch heat exchanging coil pipe, a superheating coil pipe and a fan, wherein the supercooling coil pipe and the superheating coil pipe are arranged in the best heat exchanging effect position and the worst heat exchanging effect position in the indoor heat exchanger respectively and are parallel with the multi-branch heat exchanging coil pipe, a refrigeration outlet of the supercooling coil pipe is connected with a refrigeration inlet of the multi-branch heat exchanging coil pipe, and a refrigeration outlet of the multi-branch heat exchanging coil pipe is connected with a refrigeration inlet of the superheating coil pipe. The multi-branch indoor heat exchanger is applicable to various air conditioner systems and capable of effectively enhancing stability and reliability of working of an expansion valve, avoids wet compression of a compressor and effectively improves system efficiency, running safety and running reliability.
Description
Technical field
The utility model belongs to the Building Environment and Equipment Engineering technical field, relates to a kind of multiple branch circuit indoor heat exchanger, is a kind of multiple branch circuit indoor heat exchanger of synchronous heat exchange specifically.
Background technology
The multiple branch circuit indoor heat exchanger is a kind ofly to make refrigerant fluid and room air fluid generation forced heat-exchanging, thereby improves a kind of dividing wall type heat exchanger of indoor environment.It can be used as household heater, room cooler or air purifier for cooling/heating or purifies the air of a room, for people provide comfortable indoor environment.Under cooling condition, the multiple branch circuit indoor heat exchanger is evaporimeter, and the part heat of air is passed to cold-producing medium, and indoor temperature is reduced; Under heating condition, the multiple branch circuit heat exchanger is condenser, and the part heat of cold-producing medium is passed to air, and indoor temperature is raise.
The indoor heat exchanger great majority do not have superheater at present, and minority is furnished with superheater, often because superheater is too complicated, manufacturing cost is higher, are not widely adopted yet.Prior art unrealized synchronous heat exchange in addition, general indoor 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 refrigerant superheat degree and degree of supercooling are controlled.Its indoor 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.
Chinese patent " a kind of canal evaporator " (patent No. CN 101101177A) adopts the method for circulating and evaporating to guarantee that cold-producing medium vaporizes fully, improves heat exchange efficiency, improves the degree of superheat of refrigerant gas simultaneously, guarantees the efficient stable operation of compressor.But the method for circulating and evaporating will inevitably reduce the operating efficiency of heat exchanger under identical heat exchange area, will meet the demand of heat exchange with the measure of the quantity that increases heat exchange coil and area under equal operating mode, improved the initial cost of equipment.This heat exchanger relates to refrigerant air-liquid two complex technology such as be separated simultaneously, and specification requirement is high, and also comparatively harsh for the requirement of heat exchange coil, the processing and manufacturing cost is high.
Summary of the invention
technical problem:the defect existed for prior art, the utility model provides a kind of degree of superheat that can effectively increase the degree of supercooling of cold-producing medium in the process of heating and control cold-producing medium in process of refrigerastion, the service behaviour of raising system and security performance, improve the multiple branch circuit indoor heat exchanger of the synchronous heat exchange of system conditions.
technical scheme:the multiple branch circuit indoor heat exchanger that heat exchange of the present utility model is synchronous, comprise sub-cooling coil, multiple branch circuit heat exchange coil, cross hot coil and blower fan, sub-cooling coil with cross hot coil and be separately positioned in indoor heat exchanger heat transfer effect preferably and the poorest position parallel with the multiple branch circuit heat exchange coil, the refrigeration outlet of sub-cooling coil is connected with the refrigeration import of multiple branch circuit heat exchange coil, and the refrigeration outlet of multiple branch circuit heat exchange coil is connected with the refrigeration import of crossing hot coil.
In process of refrigerastion, cold-producing medium enters multiple branch circuit indoor heat exchanger (being now evaporimeter) after the throttling action of the condensation of outdoor condenser and expansion valve.In heat exchanger, the cold-producing medium shunting after the sub-cooling coil coil pipe of flowing through enters the multiple branch circuit heat exchange coil, after cold-producing medium in each branch road coil pipe and the abundant heat exchange of room air, conflux enter be positioned at the heat exchange of air effect the poorest place cross hot coil, and fully mix therein, heat exchange.The common hot coil section of crossing has guaranteed the degree of superheat that cold-producing medium is certain, thereby the refrigerant superheat degree that guarantees compressor inlet has improved stability and the security of refrigeration system at 5 ℃～11 ℃.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 ℃.
Heat in process, cold-producing medium enters multiple branch circuit indoor heat exchanger (being now condenser).Enter the multiple branch circuit heat exchange coil in cold-producing medium stream shunting after the hot coil coil pipe in heat exchanger, conflux and enter the sub-cooling coil that is positioned at air heat-exchange best results place after cold-producing medium in each branch road coil pipe and the abundant heat exchange of room air, and fully mixing, heat exchange therein.Common sub-cooling coil section has guaranteed the degree of supercooling that cold-producing medium is certain, thereby has guaranteed the efficient stable of expansion valve.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 indoor heat exchanger heat exchange area, can strengthen heat transfer effect, improves heating capacity.
beneficial effect:the utility model compared with prior art, has the following advantages:
(1) the utility model indoor 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 indoor heat exchanger simultaneously, improved heating capacity.
(2) the utility model indoor 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 indoor heat exchanger has been realized synchronous heat exchange, widely applicable, not only can be used as the indoor heat exchanger of single cold type air-conditioning system, also can be used as the indoor heat exchanger of heat pump type air conditioner system.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of disclosed brand new air processing group in prior art;
Fig. 2 is the schematic diagram of disclosed canal evaporator in prior art;
Fig. 3 is the schematic diagram of the multiple branch circuit indoor heat exchanger of the synchronous heat exchange of the utility model;
Fig. 4 is the structure chart of embodiment mono-of the present utility model;
Fig. 5 is the air wind speed field polar plot of embodiment mono-of the present utility model;
Fig. 6 is the structure chart of embodiment bis-of the present utility model;
Fig. 7 is the air wind speed field polar plot of embodiment bis-of the present utility model;
Fig. 8 is the structure chart of embodiment tri-of the present utility model;
Fig. 9 is the air wind speed field polar plot of embodiment tri-of the present utility model;
Figure 10 is the fundamental diagram of the utility model in the single cold type air-conditioning system;
Figure 11 is the fundamental diagram of the utility model in heat pump type air conditioner system.
In figure: the 1-sub-cooling coil; 2-multiple branch circuit heat exchange coil; 3-crosses hot coil; The 4-blower fan; The 5-casing; The 51-return air inlet; The 52-air outlet; The 6-compressor; The 7-outdoor heat exchanger; The 8-expansion valve; The 9-four-way change-over valve.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
The multiple branch circuit indoor heat exchanger that the utility model heat exchange is synchronous, comprise sub-cooling coil 1, multiple branch circuit heat exchange coil 2, cross hot coil 3 and blower fan 4, sub-cooling coil 1 with cross hot coil 3 and be separately positioned in indoor heat exchanger heat transfer effect preferably and the poorest position parallel with multiple branch circuit heat exchange coil 2, the refrigeration outlet of sub-cooling coil 1 is connected with the refrigeration import of multiple branch circuit heat exchange coil 2, the refrigeration outlet of multiple branch circuit heat exchange coil 2 is connected with the refrigeration import of crossing hot coil 3, and blower fan 4 is arranged on air-out one side of indoor heat exchanger.
The utility model casing 5 comprises formation a plurality of ventilating openings thereon, wherein return air inlet 51 is delivered to the multiple branch circuit indoor heat exchanger by room air, air outlet 52 is delivered to indoor by the air after processing, blower fan 4 is arranged on air-out one side of indoor heat exchanger, blower fan 4 is identical with the setting height(from bottom) of multiple branch circuit heat exchange coil 2, and level interval is not less than 50mm.
In indoor heat exchanger of the present utility model, under cooling condition, cold-producing medium collects and entered in hot coil 3 after multiple branch circuit heat exchange coil 2 and air heat-exchange, obtain certain degree of superheat, under heating condition, cold-producing medium collects and enters in sub-cooling coil 1 after multiple branch circuit heat exchange coil 2 and air heat-exchange, obtains certain degree of supercooling.
In the utility model, blower fan 4 air-out positions have 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 4 of the multiple branch circuit indoor 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 indoor heat exchanger topmost is set to sub-cooling coil 1; 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 3.In process of refrigerastion, cold-producing medium enters multiple branch circuit indoor heat exchanger (being now evaporimeter) after the throttling action of the condensation of outdoor condenser and expansion valve.In heat exchanger cold-producing medium flow through be positioned at heat transfer effect the rear shunting of sub-cooling coil 1 at poor place enter multiple branch circuit heat exchange coil 2.Under the effect of blower fan semi-finals power air flow field, the cold-producing medium in each branch road and force air heat exchange, temperature rises.After this cold-producing medium collect enter be positioned at the heat exchange of air effect the poorest place cross hot coil 3, and fully mix therein, heat exchange, obtain certain degree of superheat.In heating process, cold-producing medium enters multiple branch circuit indoor heat exchanger (being now condenser).In heat exchanger cold-producing medium flow through be positioned at heat transfer effect the rear shunting of hot coil 3 of crossing at poor place enter multiple branch circuit heat exchange coil 2.Under the effect of blower fan semi-finals power air flow field, the cold-producing medium in each branch road and force air heat exchange, temperature reduces.After this cold-producing medium collects and enters the sub-cooling coil 1 that is positioned at the benefit of air effect heat exchange, and fully mix therein, heat exchange, obtain certain degree of supercooling.
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 4 of the multiple branch circuit indoor 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 1; 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 was set to hot coil 3.In process of refrigerastion, cold-producing medium enters multiple branch circuit indoor heat exchanger (being now evaporimeter) after the throttling action of the condensation of outdoor condenser and expansion valve.In heat exchanger cold-producing medium flow through be positioned at heat transfer effect the rear shunting of sub-cooling coil 1 at poor place enter multiple branch circuit heat exchange coil 2.Under the effect of blower fan semi-finals power air flow field, the cold-producing medium in each branch road and force air heat exchange, temperature rises.After this cold-producing medium collect enter be positioned at the heat exchange of air effect the poorest place cross hot coil 3, and fully mix therein, heat exchange, obtain certain degree of superheat.In heating process, cold-producing medium enters multiple branch circuit indoor heat exchanger (being now condenser).In heat exchanger cold-producing medium flow through be positioned at heat transfer effect the rear shunting of hot coil 3 of crossing at poor place enter multiple branch circuit heat exchange coil 2.Under the effect of blower fan semi-finals power air flow field, the cold-producing medium in each branch road and force air heat exchange, temperature reduces.After this cold-producing medium collects and enters the sub-cooling coil 1 that is positioned at the benefit of air effect heat exchange, and fully mix therein, heat exchange, obtain certain degree of supercooling.
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 4 of the multiple branch circuit indoor 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 1; 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 3 in indoor heat exchanger three kinds of selection modes are just arranged, be respectively two branch roads of branch road of a branch road, foot of topmost or topmost and foot simultaneously as crossing hot coil 3, it was hot coil 3 that the present embodiment is selected a branch road of topmost.In process of refrigerastion, cold-producing medium enters multiple branch circuit indoor heat exchanger (being now evaporimeter) after the throttling action of the condensation of outdoor condenser and expansion valve.In heat exchanger cold-producing medium flow through be positioned at heat transfer effect the rear shunting of sub-cooling coil 1 at poor place enter multiple branch circuit heat exchange coil 2.Under the effect of blower fan semi-finals power air flow field, the cold-producing medium in each branch road and force air heat exchange, temperature rises.After this cold-producing medium collect enter be positioned at the heat exchange of air effect the poorest place cross hot coil 3, and fully mix therein, heat exchange, obtain certain degree of superheat.In heating process, cold-producing medium enters multiple branch circuit indoor heat exchanger (being now condenser).In heat exchanger cold-producing medium flow through be positioned at heat transfer effect the rear shunting of hot coil 3 of crossing at poor place enter multiple branch circuit heat exchange coil 2.Under the effect of blower fan semi-finals power air flow field, the cold-producing medium in each branch road and force air heat exchange, temperature reduces.After this cold-producing medium collects and enters the sub-cooling coil 1 that is positioned at the benefit of air effect heat exchange, and fully mix therein, heat exchange, obtain certain degree of supercooling.
In the utility model heat exchanger when work, be arranged in the sub-cooling coil 1 at the best branch road place of heat exchanger and air heat-exchange effect in heating process, greatly improved the heat transfer effect of heat exchanger under the potent wind field of blower fan 4, 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 indoor heat exchanger simultaneously, has improved heating capacity.Be arranged in the degree of superheat that hot coil 3 has been controlled cold-producing medium effectively of crossing at the poorest branch road place of heat exchanger and air heat-exchange effect in process of refrigerastion, 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 indoor 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 6 of cold-producing medium, entering outdoor heat exchanger 7(is condenser) and the force air heat exchange, the abundant condensed refrigerant liquid 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) thereafter.In heat exchanger cold-producing medium flow through be positioned at heat transfer effect the rear shunting of sub-cooling coil 1 at poor place enter multiple branch circuit heat exchange coil 2.Under the effect of blower fan semi-finals power air flow field, the cold-producing medium in each branch road and force air heat exchange, temperature rises.After this cold-producing medium collect enter be positioned at the heat exchange of air effect the poorest place cross hot coil 3, and fully mixing, heat exchange therein, obtain certain degree of superheat, guarantee that the refrigerant superheat degree of compressor 6 imports is at 5 ℃～11 ℃, finally return to compressor 6, complete whole process of refrigerastion.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 indoor heat exchanger of heat pump type air conditioner system.When heat pump type air conditioner is done heating operation, become high temperature and high pressure gas after compressed machine 6 compressions of cold-producing medium, enter heat exchange in indoor heat exchanger (being now condenser) through four-way change-over valve 9 effects.Refrigerant gas in heat exchanger through be positioned at heat transfer effect the poorest place cross hot coil 3 after shunting enter multiple branch circuit heat exchange coil 2.Under the effect of blower fan semi-finals power air flow field, the cold-producing medium in each branch road and force air heat exchange, temperature descends.After this cold-producing medium collects and enters the sub-cooling coil 1 that is positioned at the benefit of air effect heat exchange, and fully mix therein, heat exchange, guarantee certain degree of supercooling.Thereafter the cold-producing medium that has big supercooling degree carrys out throttling through expansion valve 8, and entering outdoor heat exchanger 7(is now evaporimeter) middle heat exchange, finally return to compressor 6, 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 indoor heat exchanger of heat exchange, it is characterized in that, this indoor heat exchanger comprises sub-cooling coil (1), multiple branch circuit heat exchange coil (2), cross hot coil (3) and blower fan (4), described sub-cooling coil (1) with cross hot coil (3) and be separately positioned in indoor heat exchanger heat transfer effect preferably and the poorest position parallel with multiple branch circuit heat exchange coil (2), the refrigeration outlet of sub-cooling coil (1) is connected with the refrigeration import of multiple branch circuit heat exchange coil (2), the refrigeration outlet of multiple branch circuit heat exchange coil (2) is connected with the refrigeration import of crossing hot coil (3), described blower fan (4) is arranged on air-out one side of indoor heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220586077 CN203258925U (en) | 2012-11-08 | 2012-11-08 | Multi-branch indoor heat exchanger synchronous in heat exchanging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220586077 CN203258925U (en) | 2012-11-08 | 2012-11-08 | Multi-branch indoor heat exchanger synchronous in heat exchanging |
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| CN203258925U true CN203258925U (en) | 2013-10-30 |
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| CN 201220586077 Withdrawn - After Issue CN203258925U (en) | 2012-11-08 | 2012-11-08 | Multi-branch indoor heat exchanger synchronous in heat exchanging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954626A (en) * | 2012-11-08 | 2013-03-06 | 南京师范大学 | Multi-branch indoor heat exchanger for synchronous heat exchange |
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2012
- 2012-11-08 CN CN 201220586077 patent/CN203258925U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954626A (en) * | 2012-11-08 | 2013-03-06 | 南京师范大学 | Multi-branch indoor heat exchanger for synchronous heat exchange |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131030 Effective date of abandoning: 20150708 |
|
| RGAV | Abandon patent right to avoid regrant |