Air cooled condenser air-conditioner outdoor unit group
(1) technical field:
The utility model relates to a kind of air cooled condenser air-conditioner outdoor unit group.
(2) background technology:
Utilize the air-conditioner outdoor unit group of fluorine Lyons as cold-producing medium in the prior art, its condenser has two kinds of types of cooling, and one is air-cooled, i.e. air-cooled type; Another is a water-cooled, and it is by the water quench condenser.
The structure of existing air cooled condenser air-conditioner outdoor unit group is as follows, it comprises: common condenser assembly, it is on (being welded into serpentine coil) U-shaped external diameter of pipe of some end to end red copper matter, cover with and with the copper pipe tensioner in order to increase the aluminium foil fin of area of dissipation; Fan assembly is made up of motor and the aerofoil fan that is loaded on the motor output shaft, and motor-driven fan rotates to quicken air and flows during work, strengthens the radiating effect of condenser; Compressor of air conditioner and thereon the cold-producing medium in-service pipeline that bends to definite shape of weldering, comprise with indoor units in the steam absorbing tube road that interlinks of evaporimeter and the blow-off line that is connected with condenser; The electrical control part is in order to the start-stop and the action of each the electric executive item in the unit outside the control room; The housing of outdoor unit.
Air cooled condenser air-conditioner outdoor unit group is widely used in normal room air regulator, air duct blow type air-conditioning (heat pump) unit, multi-connected air conditioner (heat pump) unit and small-sized wind cooling cold and hot water unit etc. because it is simple, with low cost, easy to maintenance.Yet for water-cooled, it has its inborn deficiency: the power consumption of air-conditioner is higher.It is as follows to analyze its reason: air cooled condenser air-conditioner outdoor unit group is when refrigerating operaton, the high-temperature high-pressure refrigerant of discharging from compressor of air conditioner is condensed in condenser the process of liquid, discharge a large amount of heats, it is passed to the aluminium foil fin through copper pipe and passes to the air that has been improved flow velocity by fan assembly again, is dispersed in the outside atmosphere at last.Typical Convective Heat Transfer is arranged in this process twice.Be between freon and the copper pipe for the first time, its exothermic coefficient average out to α
1=3450~6000W/m
2℃; The second time is for the aluminium foil fin and be forced between the flow air its exothermic coefficient average out to α
2=40~58W/m
2℃.Very obvious, α
2Only be α
1About 1%.This fact shows, the heat radiation of aluminium foil fin seriously lags behind, its is difficult to the condensation heat in fluorine Lyons is in time distributed, and this again can the radiating rate of severe inhibition fluorine Lyons in condenser copper tube, thereby has fundamentally determined the highly energy-consuming of existing air cooled condenser air-conditioner.
(3) summary of the invention:
The utility model is intended to overcome above-mentioned the deficiencies in the prior art, thereby a kind of air cooled condenser air-conditioner outdoor unit group that reduces the power consumption of air-conditioner greatly is provided.
Thinking of the present utility model is, existing air cooled condenser air-conditioner outdoor unit group structure is done following improvement, on existing air cooled condenser air-conditioner outdoor unit group, increase holding water pump spray header assembly, cistern assembly, when the air-conditioner refrigerating operaton, from water tank, draw the clean water that has softened by pump operation, by spray header water is sprayed on the aluminium foil fin of condenser, thereby on the aluminium foil fin, form steam water smoke, and it is dispersed in the atmosphere rapidly by the outdoor fan that runs up.By in conjunction with air-cooled and advantage water-cooled, improved the radiating rate of air-conditioner outdoor unit group aluminium foil fin greatly, reduced the condensation temperature of air-conditioner, improved refrigerating capacity and Energy Efficiency Ratio.
Concrete technical solution is as follows:
The utility model comprises:
Condenser assembly, it is on the red copper matter U-shaped external diameter of pipe of some end to end serpentine coils, add cover and with the copper pipe tensioner in order to increase the aluminium foil fin of area of dissipation; Fan assembly is made up of some motor and the fan that is loaded on the motor output shaft that each is self-driven thereof, and motor operation drive fan is rotated to quicken air and flowed during energising, strengthens the radiating effect of condenser; Compressor of air conditioner and the cold-producing medium in-service pipeline that bends to definite shape that is attached thereto, comprise with the air conditioner room unit group in the steam absorbing tube road that interlinks of evaporimeter and the blow-off line that is connected with condenser; The electrical control part, it cooperates jointly with the electrical control part of indoor apparatus of air conditioner group, in order to the start-stop and the action of each the electric executive item in the unit outside the control room; The housing of outdoor unit comprises front panel, side plate, median septum, squab panel, top cover, chassis, valve plate etc.; Have some leaking holes on the described chassis;
It also comprises:
Be installed on housing condenser assembly below cistern assembly, be installed on the water pump in the water tank and link to each other with pump outlet be installed on condenser spray header assembly all around.
The clear water tanks that described cistern assembly comprises the header tank that is installed on condenser assembly below, interlink with header tank top, be positioned at clear water tanks in order to control water tank water intake and the ball-cock assembly that links to each other with outside water inlet pipe, in order to the overflow pipe of spilling water, be connected in bottom the header tank in order to the blow-off pipe of blowdown and on blowoff valve, the top board of described header tank is the chassis that has some leaking holes.
The intake of described water pump is positioned at clear water tanks.
Described spray header assembly is made up of water-main, some branching pipes, water-main be connected by electric motor driven pump outlet, each branching pipe all is connected with water-main, they are positioned at the side and the top of condenser, and maintain a certain distance with condenser, every branching pipe is drilled with some water spray apertures on the side of condenser.
Some water spray apertures on the above-mentioned branching pipe are evenly distributed and can guarantee being evenly distributed of cooling water.
Operation principle of the present utility model is:
The utility model is when refrigerating operaton, the superheated steam of the cold-producing medium with HTHP of discharging from compressor of air conditioner enters after the snake type coil pipe of condenser through in-service pipeline, in being condensed into liquid process, constantly discharge heat, and heat is conducted to the aluminium foil fin through copper pipe; At this moment, pump working cleans cooling water to aluminium foil fin surface spray from the aperture of each branching pipe; Cooling water is heated evaporation and forms steam or water smoke on the aluminium foil fin of temperature higher (50 ℃ ± 6 ℃), aluminium foil fin and tensioner snakelike copper pipe acceleration cooling together with it, the refrigerant gas cooling of operation in the copper pipe is quickened, and condensation is quickened, and promptly quickens to discharge heat; Meanwhile, fan runs up, and the steam water smoke that evaporation forms is blown away.At this moment, the leaking hole of cooling water on the chassis of most of each branching pipe ejection flows in the header tank.This part water that is polluted post precipitation in header tank, its upper strata is limpider, can enter clear water tanks for recycling through leading to the hole, and the sewage that its bottom precipitation goes out is regularly discharged by blow-off pipe.When the water level in the clear water tanks was lower than certain altitude, ball-cock assembly was opened beginning and is intake by outside water inlet pipe, adds to setting height up to water level, and ball-cock assembly is closed.Overflow pipe is to prevent that ball-cock assembly from breaking down, to guarantee the height of water level in the clear water tanks.
The utility model greatly reduces the condensation temperature of air-conditioner, has improved refrigerating capacity, improves Energy Efficiency Ratio.The utility model air-conditioner outdoor unit group is when refrigerating operaton, cold-producing medium fluorine Lyons liberated heat in condenser with HTHP is passed to the aluminium foil fin through copper pipe and is passed to the clean water that the aluminium foil fin surface is forced to flowing again, make water be subjected to thermal evaporation, blow out outdoor then.In this heat transfer process: be still the heat convection between freon (as R22) and the copper pipe for the first time, its exothermic coefficient is α
1=3450~6000W/m
2℃; For the second time be heat convection between aluminium foil fin and the mobile cooling water, its exothermic coefficient is α
3=3000~6000W/m
2℃.The clean evaporation latent heat of cooling water about 50 ℃ is 2382KJ/Kg water, and this can absorb the heat about 2400W and flash to water vapour with regard to meaning the every gram clean water of per second.This caloric receptivity is sizable, and (the air-conditioner outdoor unit group condenser of about 7000W~7500W), when 50 ℃ of left and right sides, per second approximately evaporates 3~4 gram clean waters, will take away whole condensation heat that condenser distributes to be 3 for a specified refrigerating capacity.Obviously, described second time, exothermic phase wanted much abundant for aluminium foil fin and air (prior art), therefore the cooling water very fast evaporation of being heated very soon forms steam water smoke and is blown away, thereby quickened the condensation rate in cold-producing medium (fluorine Lyons), make that total heat dissipation capacity significantly increases compared to existing technology on the unit interval inner condenser, thereby increased radiating rate.Can make the mean temperature of the wind of from outdoor unit, discharging descend more than 4 ℃ than prior art products.
Further technical scheme is:
Described clear water tanks is built-in with the water softener that is used for demineralized water.
The effect of water softener is demineralized water, prevents cooling water fouling and reduce the heat transfer property of condenser and then influence the power consumption of air-conditioner on condenser.
An improvement part is again:
There is filter screen in the intake outside that described water pump is positioned at clear water tanks.
This technical scheme is in order to guarantee the high-quality of cooling water equally, and the factor owing to cooling water that prevents influences the power consumption of air-conditioner.
(4) description of drawings:
Accompanying drawing 1 is the schematic diagram of the utility model embodiment;
Each sequence number is respectively among the figure: 1. aerofoil fan; 2. branching pipe; 3. condenser assembly; 4. water-main; 5. casing assembly; 6. fan electromotor; 7. electric machine support; 8. chassis; 9. contraminated zone; 10. header tank; 11. pump motor; 12. water pump; 13. suction hose; 14. clean water area; 15. blow-off pipe; 16. ball-cock assembly; 17. drain stop valve; 18. overflow pipe; 19. water softener; 20. water inlet pipe; 21. fluorine Lyons stop valve; 22. compressor; 23. steam absorbing tube; 24. gland steam exhauster; 25. backboard; 26. electrical control part; 27. leaking hole; 28. lead to the hole; 29. filter screen; 30. clear water tanks.
(5) specific embodiment:
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
Embodiment illustrated in fig. 1, be that specified refrigerating capacity is the outdoor unit sketch of 7000W heat pump type air conditioner.Described embodiment comprises, by some mouldings or the casing assembly 5 made through the sheet metal of antirust processing, it is made up of chassis 8, top cover, front panel, squab panel, side plate, median septum, air-out case, valve plate etc., have some leaking holes 27 on the chassis 8, condenser assembly 3, fan assembly, compressor and refrigerant tubing, electrical control part, water pump and spray header assembly etc. are arranged in the enclosure.Described condenser assembly 3 comprise by tens long U-shapeds (hair clip shape) red copper pipeline be welded from beginning to end serpentine condenser, the cover form thereon and with copper pipe tensioner aluminium foil fin and associated metal end plate together.Aluminum foil thickness on the described condenser is 0.105mm, after hydrophilic membrane is handled, leaves strip crevice on it, in order to heat radiation.One side of condenser is furnished with 2 branching pipes 2 from top to bottom; Described each branching pipe diameter is φ 10mm, all be communicated with water-main 4 and and the condenser inner surface between keep spacing distance 10mm; By the condenser inboard, be drilled with some water spray apertures (failing among the figure to illustrate), the about φ 1.0mm of diameter on described each branching pipe every certain-length; The meter pressure of described water spray aperture ejection water is 0.05MPa, and total flow is 4.0L/min, and under this pressure and flow, cooling water is with on each surface of topped condenser aluminium foil fin.
On the chassis 8 of off-premises station assembly housing assembly 5, pump motor 11 is housed; Direct connection is fixed with water pump 12 and the suction hose 13 that is loaded on the water pump on the described pump motor output shaft, described water pump and suction hose are all under chassis 8 and place header tank 10, and suction hose 13 is immersed in the clean water area 14 of header tank 10, and there is filter screen 29 in its intake outside.During water pump energising operation, draw the cooling water of the cleaning of storing in the clean water area 14 by suction hose 13; This pump motor moves under the control of electrical control part 26, thereby makes each branching pipe 2 spray the cooling water of certain pressure continuously or intermittently to condenser assembly 3 aluminium foil fin surfaces; Each branching pipe 2 is communicated with water-main 4, and water-main is connected on the outlet pipe of water pump 12.In the present embodiment, also have plurality of fans motor 6 to be fixed on the electric machine support 7, described electric machine support 7 is fixed on the chassis 8 of casing assembly 5 and on the backboard 26; An aerofoil fan 1 respectively is connected on the output shaft of each fan electromotor 6; During fan electromotor 6 energising operations, fan rotates at a high speed, and the steam that the heat that condenser assembly 3 is distributed forms together with cooling water blows in the outer atmosphere of outdoor unit and goes.In off-premises station assembly housing assembly 5, also have compressor of air conditioner 22 and weldering thereon steam inlet pipe 23 and gland steam exhauster 24, admission pipeline 23 is connected to the indoor units that is arranged in indoor by fluorine Lyons stop valve 21, and blow-off line 24 connects condenser pipe by four-way change-over valve.
Header tank 10 and clear water tanks 30 through antirust processing arranged at 8 bottoms, casing assembly panel beating chassis of embodiment of the present utility model.The top board of described header tank is the chassis 8 that has some leaking holes 27.Header tank 10 leads to by the hole 28 of leading on the dividing plate with clear water tanks 30; Flowing down the cooling water that is stained with certain dust of failing to evaporate from condenser assembly 3 flows into the header tanks 10 in the contraminated zone 9 through leaking hole 27, through post precipitation, its upper strata is limpider, can enter clear water tanks 30 for recycling through leading to hole 28, the sewage that its bottom precipitation goes out can be discharged in the sewer by blow-off pipe 15 and blowdown stop valve 18 termly; In the described clear water tanks 30, be equipped with the clean cooling water of handling by the water softener 19 of demineralized water that prevents fouling, the intake of suction hose 13 is immersed in the cooling water, and there is filter screen 29 in its outside.Described clear water tanks 30 is transparent and dismountable so that observe and maintenance, and Water level ball float 17 is installed in it; Described ball-cock assembly 17 links to each other with outside water inlet pipe 21; When water inlet arrived certain height of water level, ball-cock assembly 17 stopped into water with the water inlet sealing; When the water consumption in the water tank was arrived to a certain degree, ball-cock assembly 17 was opened into water with water inlet; Unnecessary water will be discharged from overflow pipe 19.In casing assembly 5 water spray less than the position electrical control part 26 also is housed, it controls the action of (all not shown among the figure) such as the start-stop of compressor 22, fan electromotor 6 and pump motor 11 etc. and four-way change-over valve, crankcase heating tapes with the indoor electric control piece.
The advantage of present embodiment is: (1) is owing to increased the radiating rate of condenser, can make the wind mean temperature of from the air-conditioner outdoor unit group, discharging, descend more than 4 ℃ than prior art, (2) owing to reduced the temperature of cold-producing medium in condenser, can improve the refrigerating capacity of air-conditioner more than 8% than existing technology, the highlyest improve 12~15%, make the power consumption of compressor reduce (under the situation of same refrigerating capacity) more than 15%, thereby make the power consumption of whole air-conditioner reduce more than 20% the highest falling more than 25% than prior art.Or say it, and having improved the efficiency of energy utilization of air-conditioner, EER weighs with Energy Efficiency Ratio, improves more than 25% approximately.
The utility model can have multiple different concrete technical application scheme at dissimilar air-conditioning products; The above embodiment only is a kind of concrete technical scheme of the utility model application implementation.
The utility model can be used for 7000W above air-cooled (single cold type, pump type heat, the auxilliary electric type of heat pump) split room air conditioner, also can be applicable to above air-cooled pipeline formula of 7000W and air-cooled multiple (single cold type, pump type heat, the auxilliary electric type of heat pump are all arranged) air-conditioning (heat pump) unit, as the main frame of middle-size and small-size residential central air-; Its indoor units can be air duct blow type, embedded, console mode, wall-hanging and concealed type etc., and the air-out of these indoor units can be high static pressure or low static pressure, and the indoor and outdoor unit can be with deciding frequency power or variable-frequency power sources.Also can be applicable to air-cooled (the auxilliary electric type of single cold type, pump type heat, heat pump) hot and cold water unit, main frame as middle-size and small-size residential central air-, blower fan (water) coil pipes such as that its indoor units can be is embedded, concealed type, wall-hanging, cabinet-type, its indoor and outdoor unit can be with deciding frequency power or variable-frequency power sources.Also can be applicable to air-cooled (single cold type, pump type heat, the auxilliary electric type of heat pump, single cold electroheating type) unitary air conditioner (heat pump) unit and roof top air-conditioner (heat pump) unit etc.
Certainly, under inventive concept of the present utility model, the utility model has multiple form of implementation, as, those skilled in the art read and need not pay creative work behind this specification and can reveal again,, have not just described in detail at this to substitute the water spray aperture as some fog-spray nozzles that are welded on each branching pipe.