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1、1,Danfoss Air Conditioning Overview Thermostatic Expansion Valve,R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G,2,Current Mechanical Expansion Valve Program Largest TXV Manufacturer in the world 4.5 Million produced annually,3,Current Production In China,4,TD1 with small capacity,refr
2、igerants R134a,R22,R404A capacity 0.11 to 1.1 TR(0.4 to 3.8 kw) for R134a patented double contact bulb fixed and adjustable superheat setting straight and angel way version available with filter at the inlet side bleed 15%,30% compact and hermetic construction laser welding power element MWP 34 bar,
3、5,TD1 with small capacity,universal charge N without MOP, charge K and charge AC with MOP range N without MOP (-40 to +10/-40 to +50) Range K with MOP (-25 to +10/-13 to +50) Range AC with MOP (-25 to +15/-13 to +59 ) to avoid charge migration when MOP valves are used, the bulb temperature must be l
4、ower than the thermostatic element temperature.,6,TD1 drawing,7,TD1 new opportunity,TD1 technical data Refrigerants: R22,R404A, R134a,R407C MWP: 34bar Capacity:0,11 to 1,1TR Refrigerant range: N: -40 to +10 K: -25 to +10 AC:-25 to +15,TU technical data Refrigerants: R22,R134a,R404A, R407C,R410A,R507
5、 MWP: 42,5bar R410A 34bar excl. R410A capacity:0,17 to 4,5 TR Refrigerant range: N: -40 to +10 NM: -40 to -5 B: -60 to -25,8,TD1 Application,Market segments: Refrigerators and Freezers Water heat pump units Vending machines Glass Door Merchandiser Bottle Coolers Beer Dispensers Electronics/Cabinet C
6、ooling Drinking Water & Cooler Fountains Compressed Air Driers Frozen Beverage Machines Mobile Refrigerator & Freezer Wine Cellar Cold Rooms Ice Maker,9,TE flexible valve (Old design),Large temperature range(-60 to +10) designed for freezing, refrigeration and air-conditioning Interchangeable orific
7、e assembly easy stocking easy capacity matching better service Stainless steel power element, capillary tube and bulb high corrosion resistance high strength and vibration resistance fast installation: self-aligning bulb,10,TE flexible valve,Rated capacities from 19 to 355kW(5.5 to 100TR)for R22 Can
8、 be supplied with MOP Patented double contact bulb Fast and easy to install good temperature transfer from pipe to bulb MWP (max. working pressure) 22 Bar,11,Wide capacity range: From 5.5 to 100 TRR22 Wide temperature range: N: -40/+10oC; NM: -40/-5oC; NL: -40/-15oC, B: -60/-25oC All new and old sta
9、ndard refrigerants: R22, R134a, R404A/R507, R407C (R23,R124) Except R410A With MOP and without MOP: MOP +15oC, 0oC, -10oC, -20oC,TE flexible valve,12,13,Orifice assembly,14,15,TE flexible valve,16,TE flexible valve,17,TE flexible valve,18,R E F R I G E R A T I O N A N D A I R C O N D I T I O N I N G
10、,Thermostatic Expansion Valves New TE valves with even better values,19,The TE range of thermostatic expansion valves have been re-designed to meet the demand of the future. The changes will give more valuable benefits to the customer such as: - Easy selection with improved capacity range - Long lif
11、etime - Smaller stock with optimized parts program - Easier mounting with cylindrical bulb and new bulb strap,TE5 TE12 TE 20 and TE55 has been updated,20,Capacity Range on New TE,ASERCOM: +4C/+38C/1K,21,New power element concept,Flat diaphragm top part is tested with good results Give better volume
12、relation between power element and bulb and reduces the risk for charge migration Strong diaphragm material New trust pad design with calibration Flexible No wear No machining No friction,22,Optimized orifice redesign,1 orifice for all refrigerants without presetting, Benefit Reduced code No. and st
13、ock by customers Save the time of installers since presetting is not necessary for each refrigerants.,Presetting on present version,23,TE valve body improvement,24,Compact bulb excellent heat transfer,New cylindrically bulb - same contact surface - more compact,25,New bulp strap,Place the strap roun
14、d the tube, put the trap through the sledge and position the bulb,Tight the strap and bend it hard backwards and up,Fasten the screw so that the sensor is sitting tight to the tube the tube will deform a little,By deforming the tube the bulb will get a very good heat transfer,26,TE features and valu
15、es,Features,Benefits,Laser welded top part joint,Better anticorrosion performance,Optimized the volume ratio in element,Better charge migration performance,MWP increased to 28 bar,Also for R404A and R507C up to 59C condensing temperature,Improved power element,Long lifetime,Reduced material in valve
16、 body,Environmental Friendly,Mix and match new and previous parts can be combined,Easy conversion minimum stock,Compact cylindrical bulb and upgraded bulb clip,Quick and easy to mount - better temperature sensing ability,One spring for all refrigerants,Reduce stock,27,Cross reference of Orifice and capacities(R22),28,Current TE,Current element and new valve body,New element and current valve body,New TE,Mix and mat
