CN203837339U - Finned coil with efficient heat exchange design for heat pump - Google Patents
Finned coil with efficient heat exchange design for heat pump Download PDFInfo
- Publication number
- CN203837339U CN203837339U CN201420019046.3U CN201420019046U CN203837339U CN 203837339 U CN203837339 U CN 203837339U CN 201420019046 U CN201420019046 U CN 201420019046U CN 203837339 U CN203837339 U CN 203837339U
- Authority
- CN
- China
- Prior art keywords
- finned coil
- heat exchanger
- heat
- coil
- high efficient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000013461 design Methods 0.000 title claims abstract description 19
- 239000003507 refrigerant Substances 0.000 claims abstract description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 239000010687 lubricating oil Substances 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a finned coil with efficient heat exchange design for a heat pump. The finned coil comprises a heat exchanger, a finned coil body and a distributor. The heat exchanger is a strip-shaped tube, and a heat exchanger inlet and a heat exchanger outlet are formed in the two top ends of the heat exchanger respectively. The finned coil body is connected with the heat exchanger along the side wall in the length direction of the heat exchanger and comprises a refrigerant inlet provided with the distributor. According to the technical scheme, the coil structure is improved to make the evaporating temperature in the operating process higher and more stable, and liquid refrigerant is prevented from entering a compressor. In addition, the finned coil is low in cost, easy and convenient to manufacture, and capable of decreasing the cost and the number of additional parts to the maximum degree.
Description
Technical field
The utility model relates to a kind of heat transmission equipment, more particularly, relates to a kind of heat pump finned coil with high efficient heat exchanging design.
Background technology
The general principle of existing heat exchange unit is to make cold-producing medium reach turbulent condition in the evaporator coil of heat pump.In fact,, if reach the highest capacity, must make the refrigerant in each loop fully be evaporated and reach superheated steam state before arrival outlet.If the air-flow of fin surface can evenly be shunted and the heat-exchange system of whole heat exchanger surface equates, also can reach above-mentioned effect.But, in service in reality, finned coil is as evaporimeter, and its surface is vulnerable to the frosting that outside air temperature and the impact of humidity battalion cause, thereby affects operation conditions.The reason of frosting is to be reduced to it below dew-point temperature by the air themperature of heat exchanger, and airborne hydrogenesis becomes the globule, if the temperature of fin surface lower than 0 degree, that globule just freezes.
Because frosting has increased heat exchange resistance, heat exchange and the efficiency of frosting part coil pipe will reduce greatly, and air mass flow also can reduce thereupon.Under this state, refrigerant in this part coil pipe cannot reach superheated steam state before outlet, reduce the average degree of superheat of the refrigerant that leaves coil pipe, and the low evaporating state causing with the incomplete evaporation of compensation frosting part in order to improve the degree of superheat of not frosting part coil pipe refrigerant forces the heat exchanger that import connects to reduce flow.Under this state, the performance of finned coil reduces, and the cost in running also can be more and more higher.Final result is exactly that evaporating temperature and evaporating pressure reduction have affected hot pump performance, and the flow that arrives compressor is restricted, forces the operation of protection system halt system.
Effectively solution has following 3 kinds:
1. increase finned coil and surface area and avoid frosting to improve evaporating temperature, but this is only a way of curing the symptoms, not the disease, also can affect the performance in remainder loop because cannot ensure to avoid completely fin frosting or small part loop to freeze.And investment and the scale of heat pump are increased
2. the degree of superheat of accepting to reduce does not even have the degree of superheat, keeps expansion valve opening with suitable cost while avoiding loop works.Evaporating temperature in running obtains certain guarantee, but have a some enter into compressor from finned coil unevaporated liquid refrigerants out, affect the performance of unit, increased the risk of the normal operation of compressor
3. between liquid line and suction line, be installed in addition with heat exchanger.The method has increased installation difficulty, and pipe-line system, waterpower connection, welding etc. reduce system reliability.And the connecting length between heat exchanger and suction line causes pressure drop larger on the impact of efficiency.
In addition, this operation is unsettled, because in running, if expansion valve opening is excessive, part cold-producing medium can flow to newly-increased heat exchanger from evaporimeter, has increased the degree of supercooling of liquid refrigerants, has further increased the flow of heat exchanger; Along with the liquid refrigerants of part is stayed evaporimeter, the flow in evaporimeter increases, although and need to go to compensate thermal evaporation, the reverse new circulation forming because of above-mentioned reason is closed expansion valve.
On the other hand, also have the phenomenon causing because of the frosting of part coil pipe in a running to be, from the coil pipe of frosting, liquid refrigerants is out rushed in the lowermost end of air exit collector and is flow to compressor by return line, increases energy consumption and also reduces reliability.
Utility model content
The purpose of this utility model aims to provide a kind of heat pump finned coil with high efficient heat exchanging design; solve in existing heat exchanger; the reduction of evaporating temperature and evaporating pressure can affect hot pump performance; the flow that causes arriving compressor is restricted, easily makes the problem of protection system halt system operation.
According to the utility model, a kind of heat pump finned coil with high efficient heat exchanging design is provided, comprise heat exchanger, finned coil, distributor.Heat exchanger is strip pipe, and two top comprises respectively a heat exchanger entrance and a heat exchanger exit, and finned coil is connected with heat exchanger along the sidewall of heat exchanger length direction, and finned coil comprises that a refrigerant inlet place arranges distributor.
According to an embodiment of the present utility model, on the sidewall of heat exchanger length direction, be also provided with a refrigerant outlet.
According to an embodiment of the present utility model, the material of heat exchanger can be selected copper, aluminium, titanium, stainless steel etc., and inner-walls of duct is smooth or have a groove line.
According to an embodiment of the present utility model, distributor is the pipe with the interface of a lot of standard bores, and the caliber of interface is determined by the flow of finned coil, and the loop of a corresponding finned coil of interface.
According to an embodiment of the present utility model, distributor is the connector with capillary interface, and length capillaceous and caliber are determined by flow and the size of finned coil.
According to an embodiment of the present utility model, the end of finned coil increase by one extra, for the pressure differential of utilizing pipeline by lubricating oil sucking-off and be pressed into the capillary of compressor.
According to an embodiment of the present utility model, the material of finned coil is aluminium, copper, stainless steel or plastics, and surface adopts smooth or ripple.
According to an embodiment of the present utility model, the bottom of finned coil increases a circulation that makes air and the heat exchange of fluid mixture.
Adopt the technical solution of the utility model, higher more stable to reach evaporating temperature in making to move by improving coil arrangement, and prevent that liquid refrigerants from entering compressor, and cost is lower, manufacture simple and convenient, to greatest extent reduce increase part cost and quantity.
Brief description of the drawings
In the utility model, identical Reference numeral represents identical feature all the time, wherein:
Fig. 1 is the structural representation that the utlity model has the heat pump finned coil of high efficient heat exchanging design.
Detailed description of the invention
Further illustrate the technical solution of the utility model below in conjunction with drawings and Examples.
With reference to Fig. 1, this project is intended to research and develop a kind of heat pump finned coil with high efficient heat exchanging design.Evaporimeter is the heat exchanger 10 that air that cold-producing medium and blower ventilation system are brought carries out heat exchange.Refrigerant flows at finned coil 11, flows in the space of air between coil pipe and fin, if air flows according to the direction shown in arrow 1, and both following currents, if air flows according to the direction shown in arrow 2, both adverse currents.
As shown in Figure 1, the heat pump finned coil with high efficient heat exchanging design of the present utility model mainly comprises heat exchanger 10, finned coil 11, distributor 5.Come to introduce in detail structure, connection and the function of all parts below.
Heat exchanger 10 of the present utility model can be a heat exchanger tube that heat exchange property is good.The general form that adopts many backhauls of heat exchanger 10, refrigerant circulates and 9 flows in mounted parallelpiped, and under heating condition, cold-producing medium enters from refrigerant inlet 3, discharges from refrigerant outlet 4, and cooling condition is contrary.
Heat exchanger 10 is strip pipe, and two top comprises respectively a heat exchanger entrance 6 and a heat exchanger exit 7, is also provided with a refrigerant outlet 4 on the sidewall of heat exchanger 10 length directions.Heat exchanger 10 is made up of one or one group of coil pipe being made up of copper, aluminium, titanium, stainless steel etc.Inner wall smooth or screwed pipe all can.Fluid is by heat exchanger entrance 6, heat exchanger exit 7 or rightabout, and the temperature of refrigerant must be higher than the temperature of the cold-producing medium overflowing from finned coil 11.In operation of heat pump process, this refrigerant fluid can utilize liquid refrigerants in condenser, because the temperature difference of fluid under state is for this reason enough large, can adopt the heat exchanger 10 of simple compactness, and ensure rational collector caliber.
Heat exchanger 10 of the present utility model can also utilize liquid refrigerants in heat pump efficiency and control and create an extra benefit, even limiting condition or moment, from the cold matchmaker of heat exchanger 10 mistake out, by interchanger later enter the expansion valve between heat exchanger entrance 6 and heat exchanger exit 7, can avoid compressor start time because of too high temperature of air or the too low instability of flow causing or underfed.
The material of finned coil 11 is aluminium, copper, stainless steel or plastics, and the smooth or ripple of surface employing, and its sidewall along heat exchanger 10 length directions is connected with heat exchanger 10, and finned coil 11 comprises that refrigerant inlet 3 places arrange distributor 5.The problem of the most often encountering in the R&D process of finned coil 11 is oil return, because the flow velocity of the lowest part refrigerant at air exit collector is very low, lubricating oil cannot be taken away completely.Therefore, the utility model increases an extra capillary 8 at the end of finned coil 11, can utilize pressure differential in pipeline by lubricating oil sucking-off and be pressed into compressor.
Distributor 5 is generally arranged between import and each loop, is beneficial to the coolant distribution under heat supply mode and improves heat exchange efficiency.As a kind of embodiment of the present utility model, distributor 5 is the pipe with the interface of a lot of standard bores, and the caliber of interface is determined by the flow of finned coil 11, and the loop of a corresponding finned coil 11 of interface.And as another kind of embodiment of the present utility model, distributor 5 is for having the connector of capillary interface, length capillaceous and caliber are determined by flow and the size of finned coil 11.
In order to make the lubricating oil of getting back to compressor not contain condenser cold-producing medium out, the utility model increases a circulation 9 in the bottom of finned coil 11, make air and the heat exchange of fluid mixture, reclaim the after-heat of liquid refrigerants, when increasing the heat exchange efficiency of system, reduce coolant backflow.
Circulation 9 can adopt the material of any applicable pressure vessel to make, picture copper, aluminium, titanium, stainless steel etc., so that be connected with the finned coil 11 of same material, adopt the manufacturing process such as special cutting, expansion and welding, this manufacture method is equally applicable to the finned coil 11 of another part.
Above-mentioned this structure can be applied in the recuperation of heat of air-cooled heat pump band or simple source pump that adopts both vapor compression.
The important function that the utility model can also play is the surface in order to clean finned coil 11 in the time of defrost cycle 9.
In actual moving process, airborne moisture converts frost to and is attached to tightly on finned coil 11, or is attached to the frost surface of having formed, and reduces heat transfer effect, affects pressure and the temperature of refrigerant.In order to ensure the normal operation of system, the temperature defrost that now must stop heating operation and improve fin, restarts heating of system high efficiency rate after defrost completely.Four-way change-over valve can converting system flow direction, evaporimeter high temperature refrigerant out can heat finned coil 11 defrosts like this.In typical application, the top of what interchanger was vertical be arranged on finned coil 11.Such structure, makes finned coil 11 upper air streams be better than bottom, and such effect is in operation like being, the air of lower can arrive wet point faster.In this case, finned coil 11 starts defrost from bottom, and what the thickness of frost increased like this is faster and many than another part.Therefore, traditional structure circulates in 9 processes in defrost, and the defrost of bottom needs more heat, and the defrost time is longer, has reduced entire system efficiency.
What employing the utility model proposes has the heat pump finned coil of high efficient heat exchanging design, because increased a circulation 9 in bottom, the pressure reduction of fluid increases, and the flow of finned coil 11 bottoms increases.Therefore, the local defrost ability larger in defrost demand increases, and reduces heat loss, improves the whole efficiency of unit.
Be applicable to the applicable R134a of cold-producing medium of the heat pump finned coil with high efficient heat exchanging design of the present utility model, R22, R407C, R404a, R410A, R32 etc.
Those of ordinary skill in the art will be appreciated that, above description is only one or more embodiments in the numerous embodiment of the utility model, and not uses restriction of the present utility model.Any equalization variation, modification for the above embodiment and be equal to the technical schemes such as alternative, as long as meet connotation scope of the present utility model, all will drop in the scope that claims of the present utility model protect.
Claims (8)
1. a heat pump finned coil with high efficient heat exchanging design, is characterized in that, comprising:
Heat exchanger, finned coil, distributor;
Described heat exchanger is strip pipe, and two top comprises respectively a heat exchanger entrance and a heat exchanger exit;
Described finned coil is connected with described heat exchanger along the sidewall of described heat exchanger length direction, and described finned coil comprises that a refrigerant inlet place arranges described distributor.
2. the heat pump finned coil with high efficient heat exchanging design as claimed in claim 1, is characterized in that, is also provided with a refrigerant outlet on the sidewall of described heat exchanger length direction.
3. the heat pump finned coil with high efficient heat exchanging design as claimed in claim 1, is characterized in that, the material of described heat exchanger can be selected copper, aluminium, titanium, stainless steel, and inner-walls of duct is smooth or have a groove line.
4. the heat pump finned coil with high efficient heat exchanging design as claimed in claim 1, is characterized in that, described distributor is the pipe with the interface of standard bore, and the loop of a corresponding finned coil of interface.
5. the heat pump finned coil with high efficient heat exchanging design as claimed in claim 1, is characterized in that, described distributor is the connector with capillary interface.
6. the heat pump finned coil with high efficient heat exchanging design as claimed in claim 1, is characterized in that, one of the end increase of described finned coil extra, for the pressure differential of utilizing pipeline by lubricating oil sucking-off and be pressed into the capillary of compressor.
7. the heat pump finned coil with high efficient heat exchanging design as claimed in claim 1, is characterized in that, the material of described finned coil is aluminium, copper, stainless steel or plastics, and surface adopts smooth or ripple.
8. the heat pump finned coil with high efficient heat exchanging design as claimed in claim 1, is characterized in that, the bottom of described finned coil increases a circulation that makes air and the heat exchange of fluid mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420019046.3U CN203837339U (en) | 2014-01-13 | 2014-01-13 | Finned coil with efficient heat exchange design for heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420019046.3U CN203837339U (en) | 2014-01-13 | 2014-01-13 | Finned coil with efficient heat exchange design for heat pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203837339U true CN203837339U (en) | 2014-09-17 |
Family
ID=51515166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420019046.3U Expired - Lifetime CN203837339U (en) | 2014-01-13 | 2014-01-13 | Finned coil with efficient heat exchange design for heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203837339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727708A (en) * | 2014-01-13 | 2014-04-16 | 克莱门特捷联制冷设备(上海)有限公司 | Finned coil for heat pump with efficient heat exchange design |
-
2014
- 2014-01-13 CN CN201420019046.3U patent/CN203837339U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727708A (en) * | 2014-01-13 | 2014-04-16 | 克莱门特捷联制冷设备(上海)有限公司 | Finned coil for heat pump with efficient heat exchange design |
| CN103727708B (en) * | 2014-01-13 | 2016-06-08 | 克莱门特捷联制冷设备(上海)有限公司 | There is the heat pump finned coil of heat exchange design |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100557337C (en) | Heating vent air regulating system with power-actuated aftercooler | |
| CN102141274B (en) | Split air-conditioner | |
| CN102759193B (en) | Air source heat pump system | |
| CN1737470A (en) | Ribbed pipe type evaporator | |
| CN105066519A (en) | Dry-type evaporator and refrigeration system provided with dry-type evaporator | |
| CN103673082A (en) | Air conditioner system | |
| CN104040281B (en) | Air conditioner | |
| CN205690755U (en) | Cryogenic refrigerating system finned heat exchanger | |
| CN208720562U (en) | A kind of low circumstance temperature air source heat pump system | |
| CN203837339U (en) | Finned coil with efficient heat exchange design for heat pump | |
| CN208332759U (en) | Refrigerator micro-channel evaporator | |
| CN207922617U (en) | A kind of heat pump system with drip tray ice-melt pipeline | |
| CN202769825U (en) | Air-conditioner system | |
| CN209639338U (en) | A kind of freezer water-cooled all-in-one machine | |
| CN209744822U (en) | Refrigerating system of refrigerator | |
| CN103486762A (en) | Heat pump system | |
| CN204084953U (en) | Finned heat exchanger and water chiller/heater system | |
| CN204115284U (en) | A kind of refrigeration system | |
| CN103727708B (en) | There is the heat pump finned coil of heat exchange design | |
| CN101639310A (en) | Hot-gas bypass and surface cooler supercooling defrosting device | |
| CN202511384U (en) | Top air conditioner for passenger vehicle | |
| CN202734233U (en) | Air source heat pump with defrosting function | |
| CN207936548U (en) | A kind of evaporator fin | |
| CN202002228U (en) | Split-type air conditioner | |
| CN105841259A (en) | Energy-saving dehumidifier additionally provided with pulsating heat pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |