CN103512184B - Air-conditioner and air conditioning method thereof - Google Patents
Air-conditioner and air conditioning method thereof Download PDFInfo
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- CN103512184B CN103512184B CN201210201689.5A CN201210201689A CN103512184B CN 103512184 B CN103512184 B CN 103512184B CN 201210201689 A CN201210201689 A CN 201210201689A CN 103512184 B CN103512184 B CN 103512184B
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Abstract
The invention provides a kind of air-conditioner and air conditioning method thereof, wherein, air-conditioner comprises: housing (10), has air inlet (11) and air outlet (12); Blower fan (20), is positioned near air inlet (11) place or air outlet (12) place; Evaporimeter (30), be arranged in housing (10), and be positioned between blower fan (20) and air outlet (12) or be positioned between air inlet (11) and blower fan (20), air-conditioner also comprises: cooler (40), to be arranged in housing (10) and to be positioned at evaporimeter (30) towards air inlet (11) side.Air-conditioner of the present invention can improve efficiency without the need to the area increasing evaporimeter and condenser, and with low cost.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of air-conditioner and air conditioning method thereof.
Background technology
Along with the propelling of energy-saving and emission-reduction work, the Energy Efficiency Standard of air-conditioner improves gradually, producer is in order to develop the air-conditioner of high energy efficiency, the method of general employing is the area of increase two device (evaporimeter and condenser), re-start type selecting and the system matches of components and parts, the increase of shell space must be caused, in addition, for again developing for air-conditioner, higher open cost can be produced.
Summary of the invention
The present invention aims to provide air-conditioner and the air conditioning method thereof that a kind of area without the need to increasing evaporimeter and condenser can improve efficiency.
To achieve these goals, according to an aspect of the present invention, provide a kind of air-conditioner, comprising: housing, there is air inlet and air outlet; Blower fan, is positioned near air inlet or air outlet place; Evaporimeter, is arranged in housing, and between blower fan and air outlet or between air inlet and blower fan, air-conditioner also comprises: cooler, to be arranged in housing and to be positioned at evaporimeter towards air inlet side.
Further, cooler comprises oscillating heat pipe, and the inside of oscillating heat pipe forms closed inner chamber, and be filled with working medium in closed inner chamber, cooler comprises cooling section and bringing-up section.
Further, cooler also comprises the adiabatic section between cooling section and bringing-up section.
Further, the bottom of evaporimeter is provided with drip tray; The bottom of oscillating heat pipe is arranged in drip tray to form cooling section.
Further, the part beyond the cooling section of oscillating heat pipe is the bringing-up section of oscillating heat pipe.
Further, oscillating heat pipe comprises the first U section and is arranged on multiple second U section in region that the first U section surrounds, the U-shaped opening direction of the first and second U section all upward, two the second U section adjacent in multiple second U section are connected to each other, be positioned at outermost two the second U section to be connected with the two ends of the first U section respectively, the inner chamber of the first and second U section communicates and forms the closed inner chamber of oscillating heat pipe.
Further, cooler also comprises fin, and fin is set in the bringing-up section of oscillating heat pipe.
Further, the windward side of the bringing-up section relative evaporation device of oscillating heat pipe be arranged in parallel.
Further, the cooling section of oscillating heat pipe comprises the extension with the bringing-up section of oscillating heat pipe in same plane and bends the bending segment arranged relative to extension, and bending segment extends along the bottom surface of drip tray.
Further, the outer wrap of the cooling section of oscillating heat pipe has moisture absorption layer.
According to another aspect of the present invention, additionally provide a kind of air conditioning method of air-conditioner, comprising: air enters from the air inlet of air-conditioner and carries out first time heat exchange; The air carrying out first time heat exchange carries out second time heat exchange by evaporimeter; The air carrying out second time heat exchange blows out from the air outlet of air-conditioner.
Further, first time heat exchange such as is at the wet cooling process, and heat exchange is for the second time cooling and dehumidification process.
Further, air is by wet cooling process such as oscillating heat pipe heat exchanger carry out.
Apply technical scheme of the present invention, set up in housing and be equipped with cooler, this cooler is positioned at evaporimeter towards air inlet side, cooler is used for the precooling of air, even if air first carries out a heat exchange before entering evaporator heat exchange, the refrigerating capacity (raising efficiency) of air-conditioner effectively can be improved like this.Meanwhile, technical scheme of the present invention can carry out local flow improvement in existing air-conditioning configure base, without the need to increasing the size of air-conditioner shell, that is, can make full use of the remaining space of evaporimeter windward side.For increasing two device areas in prior art, re-starting the type selecting of components and parts and the technical scheme of system matches, technical scheme of the present invention can realize improving efficiency without the need to increasing two device areas equally, in addition, technical scheme of the present invention can by transforming existing air-conditioner to realize, with again develop compared with air-conditioner, save and exploit natural resources and cost.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the internal structure schematic diagram of the embodiment according to air-conditioner of the present invention;
Fig. 2 shows the expansion schematic top plan view of the cooler of the air-conditioner of Fig. 1;
Fig. 3 shows the schematic side view of the cooler of the air-conditioner of Fig. 1;
Fig. 4 shows the operation principle schematic diagram of the oscillating heat pipe of the cooler of the air-conditioner of Fig. 1;
Fig. 5 shows and uses the air-conditioner of prior art to contrast schematic diagram with using to change according to the room air enthalpy wet condition of the preferred embodiment of air-conditioner of the present invention; And
Fig. 6 shows the schematic flow sheet of the embodiment of the air conditioning method according to air-conditioner of the present invention.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Figure 1, the air-conditioner of the present embodiment is air draught type air-conditioner, and it comprises: housing 10, blower fan 20, evaporimeter 30 and cooler 40.Housing 10 has air inlet 11 and air outlet 12, blower fan 20 is positioned near air outlet 12 place, evaporimeter 30 is arranged in housing 10, and between air inlet 11 and blower fan 20, and cooler 40 to be arranged in housing 10 and to be positioned at evaporimeter 30 towards air inlet 11 side (side, windward side).
Cooler 40 is for the precooling of air, even if air first carries out a heat exchange before entering evaporimeter 30 heat exchange, effectively can improve the refrigerating capacity (raising efficiency) of air-conditioner like this.Meanwhile, the present embodiment can carry out local flow improvement in existing air-conditioning configure base, without the need to increasing the size of air-conditioner shell, that is, can make full use of the remaining space of evaporimeter 30 windward side.For increasing two device areas in prior art, re-starting the type selecting of components and parts and the technical scheme of system matches, the present embodiment can realize improving efficiency equally, in addition, the technical scheme of the present embodiment can by transforming existing air-conditioner to realize, with again develop compared with air-conditioner, save and exploit natural resources and cost.
As shown in Figures 1 to 4, in the present embodiment, the bottom of evaporimeter 30 is provided with drip tray 50, cooler 40 comprises oscillating heat pipe 41 (heat transfer element), the inside of oscillating heat pipe 41 forms closed inner chamber, working medium is filled with in closed inner chamber, conventional working medium has water, ethanol, acetone, and be applied in air-conditioner, the saturation temperature of above-mentioned working medium under certain vacuum degree should at 10-20 DEG C.The bottom of oscillating heat pipe 41 is arranged on to form the cooling section (quencher moiety is dipped in the condensed water of evaporimeter generation) of oscillating heat pipe 41 in drip tray 50, and the part beyond the cooling section of oscillating heat pipe 41 is the bringing-up section of oscillating heat pipe 41.The bringing-up section of oscillating heat pipe 41 exposes in atmosphere, can carry out heat exchange with air.The heat transfer theory of oscillating heat pipe 41 is as follows:
As shown in Figure 4, oscillating heat pipe has closed inner chamber, and this inner chamber forms serpentine circuit, is filled with a certain amount of working medium in loop, this working medium forms vapour-liquid slug flow and appears at randomly in serpentine circuit under the heat effect of cold warm end temperature difference, realizes heat transmission by vapour-liquid vibration.Oscillating heat pipe generally comprises bringing-up section, adiabatic section and cooling section, also can determine whether needing adiabatic section according to actual conditions.Because usage space is limited, the distance of cold and hot end is shorter, therefore the cooler of the present embodiment only has bringing-up section and cooling section, does not have adiabatic section.
During air-conditioner start refrigeration, indoor high temperature air is entered by air inlet, first carries out a heat exchange through subcooler 40.Because air themperature is higher than the saturation temperature of working medium in oscillating heat pipe 41, working medium starts heat absorption boiling vaporization, being partially formed minute bubbles and aggregating into large steam binding gradually in bringing-up section, when steam binding is grown up to a certain extent, will also promote the liquid plug motion adjacent with it by expansion work, form chain reaction, thus produce the vibration of vapour-liquid plug or pulse.After the steam binding after absorbing heat and liquid plug move to cooling section, because the temperature of drip tray 50 li of condensed waters is lower than the saturation temperature of the working medium of oscillating heat pipe 41, working medium will condensation heat release, and under the comprehensive function of surface tension, impulsive force and gravity etc., flow back to bringing-up section continuation heat absorption, circulation like this, thus the partial heat in air is delivered in condensed water, realize air precooling.Air after precooling cooling carries out secondary heat exchange through evaporator 30 again, and the heat in air is passed to cold-producing medium, thus obtains lower leaving air temp and water capacity.Cryogenic air after reducing temperature twice is sucked by blower fan 20, then sends into indoor through air outlet 12.
It should be noted that, oscillating heat pipe 41 only can startup optimization when cold and hot end exists the temperature difference.In short time after air-conditioner is just started shooting, drip tray 50 li does not also store cryogenic condensation water, and oscillating heat pipe 41 cannot start, not obvious to the precooling effect of air.Only have after air-conditioner runs a period of time, after drip tray 50 has a certain amount of condensed water, oscillating heat pipe 41 could startup optimization.In addition, when air conditioner heat-production, can not condensate water accumulation in drip tray 50, like this, also would not start oscillating heat pipe 41, such cooler 40 can not affect the heating operations of air-conditioner.
In the present embodiment, as shown in Figure 2, oscillating heat pipe 41 comprises the first U section and is arranged on multiple second U section in region that the first U section surrounds, the U-shaped opening direction of the first and second U section all upward, two the second U section adjacent in multiple second U section are connected to each other, be positioned at outermost two the second U section to be connected with the two ends of the first U section respectively, the inner chamber of the first and second U section communicates and forms the closed inner chamber of oscillating heat pipe 41.For adapting to different form evaporators (as V-shaped, yi word pattern etc.), oscillating heat pipe 41 can be processed into the pattern adapted.The caliber of oscillating heat pipe 41 is generally 1-6mm, the caliber that different working medium is corresponding different, and have experience formula to calculate, tube pitch is generally 10-60mm, depending on caliber, heat exchange area size.
In order to strengthen heat exchange area, strengthen heat transfer effect, as shown in figs. 1 and 3, cooler 40 also comprises fin 42, and fin 42 is set in the bringing-up section of oscillating heat pipe 41.
In the present embodiment, the windward side of the bringing-up section relative evaporation device 30 of oscillating heat pipe 41 be arranged in parallel, as shown in figures 1 and 3, the evaporimeter 30 in the present embodiment and the bringing-up section of oscillating heat pipe 41 are all tilted-putted relative to drip tray 50, and angle of inclination is identical.In unshowned in the drawings embodiment, evaporimeter 30 vertically places, and the bringing-up section of oscillating heat pipe 41 is also vertical placement.Said structure is for reducing windage and ensureing that heat exchange is even everywhere.。
In order to strengthen condensation area, strengthen condensation effect, the cooling section of oscillating heat pipe 41 comprises the extension with the bringing-up section of oscillating heat pipe 41 in same plane and bends the bending segment arranged relative to extension, in the present embodiment, bending segment along drip tray 50 bottom surface and extend towards evaporimeter 30 direction.In unshowned in the drawings embodiment, bending segment along drip tray 50 bottom surface and deviate from evaporimeter 30 direction extend.
In drip tray 50 oscillating heat pipe 41 bringing-up section bending segment towards designing according to the remaining space of the position bottom evaporimeter 30 in drip tray 50 and drip tray 50, and reduce bending degree to reduce local resistance loss as far as possible.If evaporimeter 30 is arranged with the bottom surface of all vertical drip tray 50 of the bringing-up section of oscillating heat pipe 41, then bending segment can extend towards evaporimeter 30 in drip tray 50, also can deviate from evaporimeter 30 and extend.
Preferably, the outer wrap of the cooling section of oscillating heat pipe 41 has moisture absorption layer 43.Like this, even if also can ensure sufficient film-cooled heat when drip tray 50 water yield is less, improve condensation effect.
In unshowned in the drawings embodiment, air-conditioner can be bleed type air-conditioner, and in bleed type air conditioner structure, be with the difference of above-described embodiment, blower fan is arranged on air inlet, and corresponding evaporimeter is between blower fan and air outlet.In the embodiment of bleed type air-conditioner, cooler to be arranged on equally in housing and to be positioned at evaporimeter towards air inlet side (side, windward side).Cooler can carry out the precooling of air thus the refrigerating capacity (raising efficiency) of raising air-conditioner equally, and its operation principle is same as the previously described embodiments, does not repeat them here.
As shown in Figure 5, abscissa is the water capacity of humid air, and ordinate is enthalpy of humid air value, and in figure, the equal relative humidity line of 100% is the saturation state line of humid air.The state point of room air is N1, if adopt existing air-conditioner to freeze, air is reached state point N2 (cooling and dehumidification process) after cooling and dehumidification.Air-conditioner of the present invention first adopts cooler to carry out precooling, room air by state point N1 process to state point N1 ' (waiting wet temperature-fall period), then through air-conditioner process to state point N2 ' (cooling and dehumidification process).The wet and dry bulb temperature of state point N2 ', water capacity and enthalpy all lower than state point N2, according to following formula:
Q＝m(h
N1-h
N2)(1)
Q′＝m(h
N1-h
N2′)(2)
Can draw, Q < Q ', namely invention increases refrigerating capacity.
In above-mentioned formula: Q is the refrigerating capacity of existing air-conditioner, Q ' is the refrigerating capacity of the air-conditioner of band aerial cooler, and m is the mass flow of air, h
n1for the air enthalpy of the import of existing air-conditioner, h
n2for the air enthalpy of the outlet of existing air-conditioner, h
n1 'for the air enthalpy of the import of air-conditioner of the present invention, h
n2 'for the air enthalpy of the outlet of air-conditioner of the present invention.
In specific embodiment comparison, with reference to the experimental data of a 24K courtyard machine and binding isotherm calculate, the wet and dry bulb temperature of N1 point is respectively 27 DEG C, 19 DEG C, enthalpy h
n1for 54.45KJ/Kg, density p
n1for 1.168kg/m3, air quantity m
vfor 1220m
3the wet and dry bulb temperature of/h, N2 point is respectively 14.9 DEG C, 13.5 DEG C, enthalpy h
n2for 38.19KJ/Kg, the now refrigerating capacity Q=m (h of this air-conditioning
n1-h
n2)=m
vρ
n1(h
n1-h
n2)=6436W, measured power P are 2232W, efficiency EER=Q/P=2.88.
Adopt air-conditioner of the present invention air first can be processed N1 ' point from N1 point.
The wet and dry bulb temperature that N1 ' puts is respectively 26 DEG C, 18.7 DEG C, enthalpy h
n1for 53.47KJ/Kg, air puts process to N2 ' point through evaporator by N1 ' again, and the wet and dry bulb temperature that N2 ' puts is respectively 14.5 DEG C, 13.2 DEG C, enthalpy h
n2for 37.40KJ/Kg, the now Q '=m (h of this air-conditioning
n1-h
n2 ')=m
vρ
n1(h
n1-h
n2 ')=6749W, measured power P ' are 2216W, calculate efficiency EER=Q '/P '=3.05.
If the wet and dry bulb temperature that N1 ' puts is respectively 25 DEG C, 18.4 DEG C, then the wet and dry bulb temperature that after heat exchange, N2 ' puts is respectively 14.0 DEG C, 12.9 DEG C, enthalpy h
n2for 36.62KJ/Kg, the now Q '=m (h of this air-conditioning
n1-h
n2 ')=m
vρ
n1(h
n1-h
n2 ')=7058W, measured power P ' are 2207W, calculate efficiency EER=Q '/P '=3.2.
Present invention also offers a kind of air conditioning method of air-conditioner, as shown in Figure 6, the embodiment according to air conditioning method of the present invention comprises:
S10: air enters from the air inlet of air-conditioner and carries out first time heat exchange;
S20: the air carrying out first time heat exchange carries out second time heat exchange by evaporimeter;
S30: the air carrying out second time heat exchange blows out from the air outlet of air-conditioner.
The air conditioning method of the present embodiment can improve the refrigerating capacity of air-conditioner effectively.Preferably, first time heat exchange such as is at the wet cooling process, and heat exchange is for the second time cooling and dehumidification process.Further preferably, air is by wet cooling process such as oscillating heat pipe heat exchanger carry out.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
1, the condensed water produced during air-conditioner refrigeration in prior art is often directly discharged to outdoor, and its cold carried is not utilized effectively, and have lost part energy.Air-conditioner of the present invention is that the cold recovery in the cryogenic condensation water produced by air-conditioner by oscillating heat pipe is utilized, and reaches better cool-down dehumidification effect, realizes the lifting of air-conditioner ability efficiency with minimum cost.
2, comparing with putting forward efficiency method in prior art, adopting technical scheme of the present invention, just can improve the refrigerating capacity of air-conditioning without the need to increasing two device areas, and not increase wasted work, corresponding efficiency is also promoted.
3, the small volume of cooler, form processing is various, existing air-conditioning configure base carries out local flow improvement, can make full use of the remaining space of evaporimeter windward side, comparing, saving and exploiting natural resources and cost with again developing air-conditioning.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. an air-conditioner, comprising:
Housing (10), has air inlet (11) and air outlet (12);
Blower fan (20), is positioned near described air inlet (11) place or air outlet (12) place;
Evaporimeter (30), be arranged in described housing (10), and be positioned between described blower fan (20) and air outlet (12) or be positioned between described air inlet (11) and blower fan (20), the bottom of described evaporimeter (30) is provided with drip tray (50)
It is characterized in that, described air-conditioner also comprises:
Cooler (40), to be arranged in described housing (10) and to be positioned at described evaporimeter (30) towards described air inlet (11) side, described cooler (40) comprises oscillating heat pipe (41), the inside of described oscillating heat pipe (41) forms closed inner chamber, working medium is filled with in described closed inner chamber, described cooler (40) comprises cooling section and bringing-up section, and the bottom of described oscillating heat pipe (41) is arranged in described drip tray (50) to form described cooling section.
2. air-conditioner according to claim 1, is characterized in that, described cooler (40) also comprises the adiabatic section between cooling section and bringing-up section.
3. air-conditioner according to claim 1, is characterized in that, the part beyond the cooling section of described oscillating heat pipe (41) is described bringing-up section.
4. air-conditioner according to claim 1, it is characterized in that, described oscillating heat pipe (41) comprises the first U section and is arranged on multiple second U section in region that described first U section surrounds, the U-shaped opening direction of described first and second U section all upward, two the second U section adjacent in described multiple second U section are connected to each other, be positioned at outermost two described second U section to be connected with the two ends of described first U section respectively, the inner chamber of described first and second U section communicates and forms the closed inner chamber of described oscillating heat pipe (41).
5. air-conditioner according to claim 1, is characterized in that, described cooler (40) also comprises fin (42), and described fin (42) is set in the bringing-up section of described oscillating heat pipe (41).
6. air-conditioner according to claim 1, is characterized in that, the windward side of the relatively described evaporimeter (30) of bringing-up section of described oscillating heat pipe (41) be arranged in parallel.
7. air-conditioner according to claim 1, it is characterized in that, the cooling section of described oscillating heat pipe (41) comprises the extension with the bringing-up section of described oscillating heat pipe (41) in same plane and bends the bending segment arranged relative to described extension, and described bending segment extends along the bottom surface of described drip tray (50).
8. air-conditioner according to any one of claim 1 to 7, is characterized in that, the outer wrap of the cooling section of described oscillating heat pipe (41) has moisture absorption layer (43).
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868224A (en) * | 2014-04-04 | 2014-06-18 | 王彦国 | Antifreezing type heating section for fresh air handling unit and combined type air conditioning unit |
| CN108413505A (en) * | 2018-05-31 | 2018-08-17 | 珠海格力电器股份有限公司 | Air conditioner indoor unit and air conditioner with it |
| CN110131793A (en) * | 2019-06-25 | 2019-08-16 | 宁波奥克斯电气股份有限公司 | Auxiliary electric heater unit and air conditioner |
| CN112577225A (en) * | 2020-11-26 | 2021-03-30 | 马鞍山天哲环保科技有限公司 | Cooling mechanism for intelligent environment-friendly equipment and working method thereof |
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