A kind of frequency-variable air-conditioner
Technical field
The utility model relates to air conditioner technical field more particularly to a kind of frequency-variable air-conditioners.
Background technique
Convertible frequency air-conditioner is one frequency-variable controller of increase in the structure of conventional air-conditioning.Specifically, compressor is air-conditioning
Heart, revolving speed directly influence the service efficiency of air-conditioning, and frequency-variable controller is exactly for controlling and adjusting compressor rotary speed
Control system is allowed to always in optimal rotary regimes, to improve Energy Efficiency Ratio.However, frequency-variable controller is configured with part
The element that heating power is higher, is in the case of hot operation always, such as IPM functional module, IGBT.In order to ensure frequency control
Device energy trouble-free operation is directly contacted using radiator with high power modules such as IPM, IGBT at present, and heat transfer area dissipates after being amplified
Heat reduces the temperature of the modules such as IPM, IGBT to the mode of atmosphere, guarantees system reliability of operation.
Specifically, in the prior art, the heat dissipating method of frequency-variable controller is mainly: keeping the power component of frequency-variable controller tight
It is attached on one end of radiator, and radiator is placed in the heat exchanging air duct of outdoor unit, power when reducing convertible frequency air-conditioner operation
The temperature of element guarantees system reliability of operation with this.Current radiator is mainly radiated by solid aluminum form-relieved type
Fin composition, and the area by changing radiating fin and shape radiate to strengthen.But such radiator is by outdoor unit space
Limitation, be difficult area increased, and teeth area is bigger, the temperature difference at tooth top and tooth root both ends is bigger, radiator dissipate
The thermal efficiency is lower.
Therefore it provides a kind of preferable frequency-variable air-conditioner of heat dissipation effect becomes those skilled in the art's skill urgently to be solved
Art problem.
Utility model content
For heat dissipation problem existing for prior art convertible frequency air-conditioner, the utility model provides a kind of frequency-variable air-conditioner.
The utility model frequency-variable air-conditioner by the way that the power component of frequency-variable controller is bonded with the substrate of the radiator, and
And fill in radiating fin fluid media (medium) and graphene coated layer improves the radiating efficiency of radiator on radiating fin.
The utility model implements by following technical solution:
According to a preferred embodiment, the frequency-variable air-conditioner of the utility model includes at least radiator and frequency conversion
Controller, the radiating fin that the radiator includes at least substrate and is set on the substrate, and the radiating fin
Surface be coated with graphene layer, the power component of the frequency-variable controller is bonded with the substrate of the radiator.
Further, the radiating fin includes at least the first fin and the second fin, and first fin and institute
State the hollow structure that the second fin forms filling fluid media (medium) by welding.
Further, the fluid media (medium) in the radiating fin by free convection by heat from the bottom of the radiating fin
Portion is transferred to the top of the radiating fin.
Further, the graphene layer is single-layer graphene or the heat conducting film containing graphene.
Further, the graphene layer with a thickness of 10~20 μm.
Further, the substrate is the structure with hollow cavity, and heat transfer is provided in the hollow cavity
Pipe.
Further, the heat-transfer pipe is an integral structure with the substrate die casting.
Further, it is provided with card slot in the hollow cavity, enables the heat-transfer pipe removable by the card slot
It is assemblied in unloading in the hollow cavity of the substrate.
Further, the heat-transfer pipe includes an inlet tube and an outlet, between the inlet tube and the outlet
With at least one U-bend pipe, and the inlet tube, the outlet and the U-bend pipe are integrally formed.
Further, the radiator further includes the heat-storing material being filled between the substrate and the heat-transfer pipe,
And the heat-storing material is used to absorb the heat of the substrate and transmits heat to the heat-transfer pipe.
Frequency-variable air-conditioner provided by the utility model at least has the advantage that
(1) frequency-variable air-conditioner of the utility model is by by the base of the power component of frequency-variable controller and radiator
Plate fitting, and can be increased by coating one layer of graphene layer on radiating fin using the high feature of graphene thermal coefficient
The slin emissivity of radiating fin to enhance the heating conduction of radiating fin, and then improves the radiating efficiency of radiator.
(2) radiator of the utility model is by being arranged to hollow structure for radiating fin, and in hollow structure
Fluid media (medium) is filled in portion, and the heat that power component can be transmitted to substrate by fluid media (medium) is transferred quickly to the top of radiating fin,
Improve the heat transference efficiency of radiator.
(3) heat-transfer pipe is connect by the radiator of the utility model with substrate rheo-die-casting, is reduced to other materials
Using so that the connection of heat-transfer pipe and substrate is even closer, with it is existing with heat conductive silica gel connection type compared with, heat transfer coefficient
Bigger, heat-conducting effect is more preferable, and heat transfer is faster.On the other hand, heat-transfer pipe die casting can be increased into heat-transfer pipe and substrate on substrate
Contact area scattered away so that heat effectively can be transmitted to radiator from power component, guarantee power member
Device reliability of operation.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model radiator;
Fig. 2 is a preferred embodiment installation diagram of the utility model heat-transfer pipe and hollow cavity;
Fig. 3 is a preferred embodiment structural schematic diagram of the utility model heat-transfer pipe;
Fig. 4 is the free convection schematic diagram of fluid media (medium) in the utility model radiating fin;
Fig. 5 is the installation of circuit board and power component and radiator thereon in the utility model frequency-variable air-conditioner
Schematic diagram.
1- substrate in figure;2- radiating fin;3- hollow cavity;4- heat-transfer pipe;5- card slot;6- inlet tube;7- outlet;8-
U-bend pipe;9- circuit board;10- power component;The first component of 11-;The second component of 12-;13- third component.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
According to a preferred embodiment, the frequency-variable air-conditioner of the utility model includes at least radiator and frequency conversion
Controller.Preferably, radiator is arranged in the outdoor unit of frequency-variable air-conditioner, with the power component to frequency-variable controller
It radiates.As shown in figure 5, frequency-variable controller include circuit board 9, the power component being arranged on circuit board 9 10 and its
His component.Preferably, circuit board 9 is PCB circuit board.Preferably, power component 10 includes rectifier bridge, diode, IPM etc.
The biggish electronic component of power.Preferably, other components include the first component 11, the second component shown in Fig. 5
12 and third component 13.It is furthermore preferred that power component 10 is bonded with the substrate 1 of radiator.
According to a preferred embodiment, the outdoor unit of the utility model frequency-variable air-conditioner further includes fan.Preferably,
Radiator is arranged on the blowing path of fan, and fan improves heat dissipation for distributing the heat of radiating fin 2 into air
The radiating efficiency of device.It is furthermore preferred that power component 10 is bonded on the same face on substrate 1, it is so more advantageous to energy
The performance of effect.
The structure of radiator is as shown in Figure 1 or 2.Radiator includes at least substrate 1 and is set to dissipating on substrate 1
Hot fin 2.Preferably, for directly contacting the device for needing to radiate, the one side opposite with contact device is arranged the one side of substrate 1
There are multiple radiating fins 2, radiating fin 2 is for distributing the heat that device is transmitted on substrate 1.It is furthermore preferred that heat dissipation
The surface of fin 2 is coated with graphene layer, and the power component of frequency-variable controller is bonded with the substrate 1 of radiator.
The heat dissipation of frequency-variable controller is mainly realized by way of heat loss through radiation, and influences the principal element of heat loss through radiation
It is exactly the slin emissivity of radiator, and 2 slin emissivity of existing radiating fin is very low, by taking smooth Aluminium Radiator as an example,
Its slin emissivity is detected only 0.05 or so, after aluminum material surface oxidation, slin emissivity also only up to
0.3, cause heat dissipation effect poor.
The frequency-variable air-conditioner of the utility model is by by the substrate 1 of the power component of frequency-variable controller and radiator
Fitting, and can be increased by coating one layer of graphene layer on radiating fin 2 using the high feature of graphene thermal coefficient
The slin emissivity of radiating fin to enhance the heating conduction of radiating fin, and then improves the radiating efficiency of radiator.
According to a preferred embodiment, radiating fin 2 includes at least the first fin and the second fin, and the first fin
The hollow structure of filling fluid media (medium) is formed by welding with the second fin.Preferably, fluid media (medium) is in the first fin and
It is filled in two fin welding processes.Specifically, first welding the first fin and the second fin, an osculum is stayed, from this
Osculum injects fluid media (medium) into hollow cavity, after having infused, by the osculum welded closure.
In the prior art, the radiating fin 2 on radiator is solid laminated structure, due to the heat dissipation area of radiating fin 2
Greatly, heat only is transmitted by solid radiating fin 2, heat transference efficiency is low, and heat dissipation effect is poor.The radiator of the utility model
By the way that radiating fin 2 is arranged to hollow structure, and in the internal fill fluid medium of hollow structure, fluid media (medium) can be by power
The heat that element is transmitted to substrate 1 is transferred quickly to the top of radiating fin, and by coating one layer of stone on radiating fin 2
Black alkene layer can increase the slin emissivity of radiating fin 2 using the high feature of graphene thermal coefficient, to further enhance
The heating conduction of radiating fin 2, and then improve the radiating efficiency of radiator.
According to a preferred embodiment, fluid media (medium) in radiating fin 2 is by free convection by heat from radiating fin
The bottom of piece 2 is transferred to the top of radiating fin 2.Compared with other way, by the way of free convection, not only reduce scattered
The cost of hot device, and the efficiency of heat transfer is higher, further improves the radiating efficiency of radiator.
Free convection specific explanations in the utility model are as follows: being steamed using the fluid media (medium) being filled in radiating fin 2
Hair heat absorption condenses exothermic principle, so that the high/low temperature fluid in radiating fin 2 forms free convection due to density contrast.Wherein,
The flow regime of fluid media (medium) free convection in radiating fin 2 is as shown in Figure 4.Specifically, the stream close to 2 bottom of radiating fin
The heat of body cut-off absorption substrate 1 and evaporate, the steam of formation rises to the top of radiating fin 2, due to 2 top of radiating fin
Temperature is low, and steam condenses heat release at this, and then the heat that substrate 1 absorbs is transferred to the top of radiating fin 2.
According to a preferred embodiment, the fluid media (medium) in the utility model selects one of refrigerant or a variety of.
The fluid media (medium) of the utility model selects refrigerant, can further speed up fluid media (medium) the heat that substrate 1 absorbs is transferred to it is scattered
The efficiency at the top of hot fin 2.Preferably, the utility model fluid media (medium) select R410A refrigerant, R134A refrigerant,
R1234YF refrigerant and R32 refrigerant etc. are common to meet any one of phase transition temperature interval refrigerant.
According to a preferred embodiment, graphene layer is single-layer graphene or the heat conducting film containing graphene.Adulterate stone
The coating of black alkene, with biggish slin emissivity and higher thermal coefficient.Therefore, graphene layer can be pure graphene
Coating is also possible to the composite coating containing graphene.Specifically, the slin emissivity of graphene layer is 0.95 or more, preferably
It is 0.98 or more, the cooling requirements of air-conditioner controller chip can be met.
According to a preferred embodiment, single-layer graphene or the heat conducting film containing graphene be by pure graphene coating or
Composite coating containing graphene is coated in 2 surface of radiating fin by way of spraying or brushing.By spraying or brushing
Mode coat single-layer graphene on 2 surface of radiating fin or contain the heat conducting film of graphene, it is ensured that single-layer graphene or
The adhesive strength of heat conducting film containing graphene makes single-layer graphene or the heat conducting film containing graphene firmly be attached to radiating fin
The surface of piece 2.
According to a preferred embodiment, graphene layer with a thickness of 10~20 μm.Preferably, the thickness master of graphene layer
If being arranged according to the distance between adjacent heat radiation fin 2.If the thickness of graphene layer is blocked up, so that adjacent heat radiation wing
The distance between piece 2 is smaller, influences the radiating efficiency of radiator instead.It is furthermore preferred that the thickness of the utility model graphene layer
Degree is 10~15 μm.
According to a preferred embodiment, substrate 1 is the structure with hollow cavity 3, as shown in Figure 2.Preferably, substrate
1 is the rectangular parallelepiped structure being made of six end faces, and at least one end face is removably attached on substrate 1.Preferably, exist
Heat-transfer pipe 4 is provided in hollow cavity 3.
At least one end face of the utility model substrate 1 is removably designed, and is detachably connected in heat-transfer pipe 4 and substrate 1
When, this kind of structure can facilitate the installation of heat-transfer pipe 4 and the filling of heat-storing material.Preferably, it is provided with threaded hole on substrate 1,
A dismountable end face is provided with two through-holes, and bolt is threadedly coupled fixation with threaded hole by through-hole.
According to a preferred embodiment, heat-transfer pipe 4 is an integral structure with 1 die casting of substrate.Preferably, heat-transfer pipe 4 with
Substrate 1 is integrally formed by the way of die casting, inlays die casting.Specifically, being previously positioned at radiator mold for heat-transfer pipe 4 is passed
In, then again by the disposable die cast of radiator.
Radiator provided by the utility model connect heat-transfer pipe 4 with 1 rheo-die-casting of substrate, reduces to other materials
The application of matter so that heat-transfer pipe 4 and the connection of substrate 1 are even closer, with it is existing with heat conductive silica gel connection type compared with, pass
Hot coefficient is bigger, and heat-conducting effect is more preferable, and heat transfer is faster.On the other hand, 4 die casting of heat-transfer pipe can be increased into heat transfer on substrate 1
The contact area of pipe 4 and substrate 1 is scattered away so that heat effectively can be transmitted to radiator from power component,
Guarantee power component reliability of operation.
According to a preferred embodiment, it is provided with card slot 5 in hollow cavity 3, heat-transfer pipe 4 is enabled to pass through card slot 5
It is removably assemblied in the hollow cavity 3 of substrate 1.Preferably, card slot 5 is set to the inlet tube 6 of heat-transfer pipe 4,7 and of outlet
At U-bend pipe 8.The utility model can play the work of fixed heat-transfer pipe 4 by the card slot 5 being arranged in hollow cavity 3
With, avoid heat-transfer pipe 4 shake.
According to a preferred embodiment, part curved arrangement of the heat-transfer pipe 4 in substrate 1.For example, 4 basis of heat-transfer pipe
Demand carries out more curved designs of snake, can so increase the foundation area of heat-transfer pipe 4 Yu substrate 1, enhances heat dissipation effect, guarantees power
Component reliability of operation.
The bending part of heat-transfer pipe 4 is more, bigger with the contact area of substrate 1, but cost can also increase accordingly,
The contact area of heat-transfer pipe 4 and substrate 1 can be adjusted according to the heat of power component, then adjust the bending section of heat-transfer pipe 4
Point.
According to a preferred embodiment, heat-transfer pipe 4 includes an inlet tube 6 and an outlet 7, inlet tube 6 and outlet 7
Between there is at least one U-bend pipe 8, and inlet tube 6, outlet 7 and U-bend pipe 8 are integrally formed.6 He of inlet tube
Warp architecture between outlet 7 is not limited to U-bend pipe 8, can also be remaining warp architecture.4 inside stream of heat-transfer pipe
Logical is refrigerant, plays the role of heat transfer heat exchange.
Preferably, inlet tube 6 and outlet 7 are arranged on the same end face of substrate 1 or on different end faces.More preferably
, inlet tube 6, outlet 7 and U-bend pipe 8 are integrally formed.Fig. 3 show the utility model heat-transfer pipe another preferably
Embodiment structure schematic diagram.As shown in figure 3, heat dissipation effect and production cost in order to balance, in the heat-transfer pipe 4 of the utility model
Between have 3 U-bend pipes 8.
According to a preferred embodiment, radiator further includes heat-storing material.Preferably, heat-storing material is filled in substrate
Between 1 and heat-transfer pipe 4, for absorptive substrate 1 heat and transmit heat to heat-transfer pipe 4.It is furthermore preferred that heat-storing material is stone
Ink, paraffin or polyethylene glycol.
It is inadequate for relying solely on heat-transfer pipe 4 in the prior art and transmitting the heat of radiator, and radiator is not
It is big with the own temperature difference under operating condition, cause to being only that the absorption thermal difference that heat-transfer pipe 4 exchanges heat is big, which does not have
Concentrate effective collect.The radiator of the utility model is inhaled by the heat-storing material being filled between substrate 1 and heat-transfer pipe 4
The heat that high power module such as IPM, IGBT of frequency-variable controller etc. is issued and be transmitted to substrate 1 is received, heat-storing material can be to scattered
The heat of thermal plays centralized processing;In addition, heat-transfer pipe 4 conducts heat in the substrate 1 containing heat-storing material, so that heat transfer is equal
Even, rate of heat transfer is high.
According to a preferred embodiment, the material of substrate 1 and radiating fin 2 is aluminium.Heat-transfer pipe 4 is copper pipe, stainless steel
Pipe or aluminium-alloy pipe.Preferably, the fusing point of the utility model heat-transfer pipe 4 is higher than the fusing point of substrate 1, so may make heat-transfer pipe 3
It constantly absorbs frequency-variable controller and issues and be transmitted to the heat of substrate 1, so that the heat dissipation effect of radiator is more preferable.
The frequency-variable air-conditioner of the utility model, can be well on controller by using the radiator of foregoing description
Power component radiate, it is ensured that air-conditioning equipment reliability of operation so that frequency-variable air-conditioner upper frequency run
When can also run well.Remaining component not being described of the utility model frequency-variable air-conditioner and existing frequency-variable air-conditioner
Structure is identical, and this will not be repeated here.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.