A kind of condenser and air conditionerTechnical field
The present invention relates to air-conditioning technical field more particularly to a kind of condensers and air conditioner.
Background technology
Degree of supercooling refers to difference of the temperature less than saturation temperature under relevant pressure of liquid refrigerant under a certain pressure.It is rightIn different refrigerants, every physics, chemical parameters are different so that in identical refrigeration system, degree of supercooling is different.
Condenser includes multiple heat exchange pipelines, and heat exchange pipeline is equipped with refrigerant inlet and refrigerant outlet, and refrigerant passes throughRefrigerant inlet enters in heat exchange pipeline after heat exchange, then is flowed out through refrigerant outlet.It is with R410A refrigerants and R32 refrigerantsExample, following table are the parameters of R410A refrigerants and R32 refrigerants.
| Refrigerant | R32 | R410A |
| Molecular weight | 52.02 | 72.58 |
| Normal boiling point (DEG C) | -51.7 | -51.4 |
| Critical-temperature (DEG C) | 78.1 | 70.5 |
| Critical pressure (MPa) | 5.78 | 4.81 |
| Gas phase thermal coefficient | 20.05 | 21.055 |
| Liquid phase thermal coefficient | 111.57 | 83.345 |
| Gas phase dynamic viscosity coefficient | 14.845 | 16.523 |
| Liquid phase dynamic viscosity coefficient | 90.155 | 92.271 |
| Safe class | A2L | It is non-combustible |
It can be seen that from upper table, the gas phase and liquid phase dynamic viscosity coefficient of R32 refrigerants are below R410A refrigerants, i.e. R32The refrigerating effect per unit swept volume of refrigerant ratio R410 refrigerants is high, and charging amount is less, and the critical pressure of R32 refrigerants is higher,The latent heat bigger of high-temperature region.Therefore, under identical condenser heat exchange area and certain condensing pressure, R32 refrigerants compared withThe degree of supercooling smaller of R410A refrigerants so that refrigerating efficiency and efficiency are relatively low.
Invention content
A kind of condenser of the embodiment of the present invention offer and air conditioner are sent out to improve prior art condenser heat transfer effectIt is bright.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that：
A kind of condenser, including multiple heat exchange pipelines being sequentially connected to, the heat exchange pipeline are equipped with refrigerant inlet and systemCryogen exports, and multiple heat exchange pipelines include the first heat exchange pipeline and the second heat exchange pipeline, and first heat exchange pipeline is closeThe refrigerant inlet setting, second heat exchange pipeline is arranged close to the refrigerant outlet, and second heat exchange pipelineDiameter be more than first heat exchange pipeline diameter.
The embodiment of the invention also discloses a kind of air conditioners, including the condenser described in above-mentioned technical proposal.
Condenser and air-conditioning provided in an embodiment of the present invention, due to the second heat exchanger tube close to refrigerant outlet in condenserThe first heat exchange pipeline diameter that road diameter is more than close refrigerant inlet increases the heat exchange of condenser compared to the prior artArea reduces refrigerant in the flow resistance close to the refrigerant outlet region of condenser so that refrigerant is in heat exchange pipelineSuper cooled sect (super cooled sect only includes the second heat exchange pipeline, or including the first heat exchange pipeline of part and the second heat exchange pipeline) it is betterCondensation, to improve the degree of supercooling of refrigerant；(or R32 especially is contained, and the weight percent of R32 is to R32 refrigerants50% or more mix refrigerant), degree of supercooling significantly increases, and improves the heat transfer effect of condenser, and improves systemRefrigerating efficiency and efficiency.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show belowThere is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only thisSome embodiments of invention for those of ordinary skill in the art without creative efforts, can be withObtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of principle schematic of air-conditioning；
Fig. 2 is the structural schematic diagram that condenser is one-row condenser in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram that condenser is dual-row condenser in the embodiment of the present invention；
Fig. 4 is the structural schematic diagram that condenser is special-shaped condenser in the embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, completeSite preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based onEmbodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every otherEmbodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term "center", "upper", "lower", "front", "rear", " left side ",The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on ... shown in the drawingsOrientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, do not indicate or imply the indicated device orElement must have a particular orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
Condenser is one of the important component of refrigeration system, including multiple heat exchange pipelines, is equipped on heat exchange pipeline multipleFor enhancing the fin to exchange heat, it is passed through refrigerant in heat exchange pipeline, by exchanging heat with other extraneous media so that condensationRefrigerant in device is condensed into liquid from gaseous state.By taking condenser is applied to air-conditioning as an example, Fig. 1 is that a kind of principle of air-conditioning is illustratedFigure, including compressor 1, four-way valve 2, condenser 3, evaporator 4, expansion valve 5, refrigerant enter compression under low temperatureAfter being compressed in machine 1, the refrigerant gas of high temperature and pressure is discharged into condenser 3, transfers heat to outside air or cooling waterAfterwards, it condenses into liquid refrigerant and flows into progress expenditure and pressure, the low pressure refrigerant liquid flowed out from expansion valve 5 in expansion valve 5It flows in evaporator 4, absorbs the heat of extraneous (air or water) and evaporate as gas, to make the temperature of extraneous (air or water)Degree reduces, and the low temperature low pressure gas after evaporation is sucked back by compressor 1 again, is recompressed, condensed, throttled, evaporated, successively constantlyGround recycles to reach refrigeration purpose.
Embodiment 1, Fig. 2 are a specific embodiment of condenser of the embodiment of the present invention 3, the condenser 3 in the present embodimentIncluding multiple heat exchange pipelines 31 being sequentially connected to, heat exchange pipeline 31 is equipped with refrigerant inlet 301 and refrigerant outlet 302, multipleHeat exchange pipeline 31 includes the first heat exchange pipeline 311 and the second heat exchange pipeline 312, and the first heat exchange pipeline 311 is close to refrigerant inlet301 settings, the second heat exchange pipeline 312 are arranged close to refrigerant outlet 302, and the diameter of the second heat exchange pipeline 312 is more than firstThe diameter of heat exchange pipeline 311.
Condenser 3 provided in an embodiment of the present invention, due to the second heat exchanger tube of close refrigerant outlet 302 in condenser 3311 diameter of the first heat exchange pipeline that 312 diameter of road is more than close refrigerant inlet 301 increases condensation compared to the prior artThe heat exchange area of device reduces refrigerant in the flow resistance close to the refrigerant outlet region of condenser so that refrigerant exists(super cooled sect only includes the second heat exchange pipeline to the super cooled sect of heat exchange pipeline, or including the first heat exchange pipeline of part and the second heat exchanger tubeRoad) preferably condensation, to improve the degree of supercooling of refrigerant；(or R32 especially is contained, and the weight of R32 to R32 refrigerantsMeasure the mix refrigerant that percentage is 50% or more), degree of supercooling significantly increases, and improves the heat transfer effect of condenser, and carriesThe high refrigerating efficiency and efficiency of system.
On the basis of the above embodiments, if the diameter of the diameter of the second heat exchange pipeline 312 and the first heat exchange pipeline 311Difference is excessive, increases the manufacture difficulty of condenser；If the diameter of the diameter of the second heat exchange pipeline 312 and the first heat exchange pipeline 311Difference it is too small, the raising of the refrigeration degree of system is influenced little.It is therefore preferred that the first heat exchanger tube in the embodiment of the present inventionThe difference of the diameter of the diameter in road 311 and the second heat exchange pipeline 312 is 0.5~3mm, i.e. the diameter ratio of the second heat exchange pipeline 312Big 0.5~the 3mm of diameter of first heat exchange pipeline 311 can not only improve the degree of supercooling of condenser as shown in figures 2-3, but alsoOnly by replace the simple operations such as tube expander can different tube diameters condenser making.
The type of condenser is more, such as one-in-and-one-out, mostly go out into one, one into have more, mostly into having more various condensers.It is rightFurther include current divider 32 in multi-stage condensing device, the first heat exchange pipeline 311 has multiple, and current divider 32 is by multiple first heat exchange pipelines311 are connected to one or more second heat exchange pipelines 312.By taking twin-stage heat-exchange system as an example, Fig. 2 is the condenser of Two In and One Out,Heat exchange pipeline of the current divider close to refrigerant inlet side is all made of the first heat exchange pipeline 311, and current divider is close to refrigerant outletThe heat exchange pipeline of side is all made of the second heat exchange pipeline 312, and the degree of supercooling of condenser is higher, good refrigeration effect.
Optionally, the design scheme of also another multi-stage condensing device, current divider 32 by the first heat exchange pipeline of part 311 withOne or more first heat exchange pipelines 311, the second heat exchange pipeline 312 are sequentially connected to, and not only ensure that the degree of supercooling of system is higher,And heat exchange pipeline be designed and manufactured as it is relatively low.In addition, above-mentioned design scheme applies also for condenser close to refrigerantThe more situation of the heat exchange pipeline of outlet, can only will to increase close to the diameter of refrigerant outlet (be the second heat exchanger tube for partRoad), as shown in Figure 3.
Further, there are one the second heat exchange pipelines 312 in condenser 3 or multiple, if there is multiple second heat exchange pipelines312, multiple first heat exchange pipelines 311 and multiple second heat exchange pipelines 312 are in two column distributions along first direction.As the prior art isSingle condenser, can increase by half row's heat exchange pipeline by existing heat exchange pipeline, and the diameter of increased part heat exchange pipeline is more thanThe diameter of original heat exchange pipeline improves the length and quantity of the second heat exchange pipeline 312, so as to improve the refrigeration of existing condenserEffect；If original condenser is two-stage, current divider 32 can also be connect with increased heat exchange pipeline, that is, increase original heat exchange pipelineThe length and quantity of interphase heat exchange pipeline, as shown in Figure 4.
In one timing of heat exchange pipeline total length of condenser, if the length of the second heat exchange pipeline 312 is too short, the mistake of condenserCold degree is relatively low, causes the heat exchange amount of condenser less；If the length of the second heat exchange pipeline 312 is long, the heat exchange of two-phase section can be madeDuct length is too short, and heat exchange is insufficient, and the heat exchange amount for also resulting in condenser is relatively low.It is therefore preferred that the embodiment of the present inventionIn the second heat exchange pipeline 312 length be multiple heat exchange pipelines total length 5%~20%.
The value range of the diameter of the second heat exchange pipeline 312 is 4.5~9.8mm in the embodiment of the present invention.For example, existing skillCondenser 03 is two-stage heat exchanger in art, and the diameter of heat exchange pipeline is 7.0mm, with reference to Fig. 2~4, in the side of current divider 32The diameter of (close to refrigerant inlet 301) first heat exchange pipeline is using 7.0mm (in Fig. 2 or Fig. 3 shown in open circles), the other side theThe diameter of two heat exchange pipelines is using 7.94mm (in Fig. 2 or Fig. 3 shown in double open circles)；Or it can be (close by 32 side of current dividerRefrigerant inlet 301) the first heat exchange pipeline diameter use 6.35mm (in Fig. 4 shown in filled circles), other side heat exchange pipelineDiameter still keeps original state (in Fig. 4 shown in open circles).
U-tube can be used in heat exchange pipeline 31, makes easy to process.And the material of heat exchange pipeline 31 can be used stainless steel,Alloy, copper etc..Preferably, heat exchange pipeline 31 is copper pipe in the embodiment of the present invention, and the pyroconductivity of copper pipe is higher, and with relatively strongCorrosion resistance, ductility the advantages that.
In addition, in order to further increase the exchange capability of heat of heat exchange pipeline 31, it is preferable that heat exchange pipeline in the embodiment of the present invention31 be riffled tube, increases the area of 31 inner wall of heat exchange pipeline, to improve the heat transfer effect of condenser 3.
The embodiment of the invention also discloses a kind of air conditioners, including the condenser 3 described in above-described embodiment.Due at thisThe condenser 3 of the air conditioner installation of embodiment is identical as the structure provided in each embodiment of above-mentioned condenser 3, therefore the twoIdentical technical problem can be solved, and reaches identical desired effect.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, anyThose familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all containLid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.