CN2423171Y - Air filter special for railway passenger train - Google Patents

Abstract

The utility model relates to an air filter special for a railway passenger train, comprising filtering materials. The air filter special for the railway passenger train is characterized in that the air filter special for the railway passenger train is also provided with an outer frame (1), and the filtering materials use non-woven fabrics (3) and are in a pin-tucking type. The air filter special for the railway passenger train is suitable for the dust-contained conditions of the atmosphere of China and the operation working conditions of the railway passenger trains. The utility model has the characteristic of high dust-catching efficiency. The dust-contained capacity is enlarged, and simultaneously, the filtration resistance is reduced.

Description

The passenger train special air filter

The utility model belongs to coach air conditioner, particularly relates to the air-filtering arrangement of coach air conditioner.

In recent years, along with the raising of living standards of the people, the field of application of air-conditioning was more and more widely used aspect many at utilities building such as hotel, restaurant, cinema, library and family, transport facility etc. and to be obtained popularizing rapidly.The effect of air-conditioning is exactly to make treated air keep certain temperature, humidity, flow velocity and cleanliness, people are felt comfortably cool or satisfies the production technology requirement.For the China railways air conditioned passenger car, though rapid progress has been arranged technically, air is all reaching designing requirement basically in the car aspect temperature, humidity and the flow velocity, but aspect cleanliness, come with some shortcomings, main surface be that the foul of air-conditioning unit evaporator stops up, and send, reaches air outlet in the air return duct and turn black dirty.Impurity such as a large amount of dusts that contain in the air, fiber are under the situation that does not obtain fine filtration, will be attached on the air-conditioning unit evaporator fin surface, it is dirty stifled that time forms evaporator once length, also can not ventilate thereupon, not freeze with regard to the air-conditioning unit having occurred, problem such as sultry in the car, airborne pollutants may produce harmful effect to the health of human body.Cause this problem major cause to be exactly because the airstrainer performance of using is bad at present, the due filter effect of out of reach.

At present, the China railways passenger car is the individual layer nylon wire with the filter material that airstrainer adopts, and continues to use the air-conditioning unit filtering net form of Japan, and this material only plays the effect that the top layer stops filtration.It filters operating mode and roughly is divided into three phases, F/s is the starting stage behind the new clothes filtering net, this moment, mesh was bigger, can only detention part particle diameter greater than the material of mesh diameter, and airborne dust, fibre composition, the greasy dirt equal diameter is easy to penetrate filtering net less than the material of mesh, enter the air channel, and then attached to evaporator surface, cold and hot exchange causes harmful effect to refrigeration system, impurity along with filtering net top layer detention part greater particle size, the filter efficiency of filtering net begins to improve, the also corresponding increase of detention dust amount, this steady stage for filtering.But because the filtering net dust containing capacity is less, the filtering net top layer is blocked, cause the difficulty of ventilating, be the zooming inefficacy stage of filtration resistance, this moment just must the cleaning and filtering net.By this performance analysis, be to be operated in the steady stage for a long time to the operating needs of filter screen.But under the atmospheric conditions of China, the stable filtration time of filter screen is too short, major cause is that China's passenger vehicle has the characteristics that haul distance is far away, the time long, cross over Different Climatic Zones, the air quality in the most of area of China is bad in addition, big as the northern area dust storm, airborne floating debris many (the poplar wadding in dust, coal dust, carbon black, spring, catkins etc.), dustiness is bigger.

The incompatible situation of airstrainer of China's passenger vehicle employing now also shows as: if frequent cleaning and filtering net will make the efficient of filtering net low, stop up evaporator, and make the content increase of the particulate in the car; If not frequent cleaning and filtering net though filter efficiency is improved, because the filtering net dust containing capacity is little, is easy to again stop up, ventilation volume is reduced, cause the interior air circulation deficiency of car.Air-conditioning unit evaporator on the cars on hand after using a period of time, is often blocked by foul, makes that the air-conditioning unit can not normal operation; The increase of inspirable particle concentration will work the mischief to human body in the air simultaneously.

The purpose of this utility model provides a kind of passenger train special air filter, and it has the advantages that to adapt to China's atmosphere dust-laden condition and passenger train utilization operating mode.

The purpose of this utility model is achieved in that the passenger train special air filter, comprises filter material, and it also comprises housing, and described filter material adopts non-weaving cloth, and is folded.

The utility model compared with prior art has following advantage: 1) filtration mechanism of nonwoven fabric filter material is an in-depth filtration, their hole is crooked circuitous passage, although pore size is not once occur over just the surface to the capture of grit, and occur in deep layer, therefore, but the detention grit littler than filter medium hole, it catch the dust quantity height, the filtration air quantity is big, and filter efficiency is stable, is difficult for producing the secondary diffusion; 2) non-weaving cloth is when filtering solia particle, and fluid resistance is low, and filter velocity is fast, the efficiency of seizing dust height, and dust containing capacity is big, and dimensionally stable also has acid and alkali-resistance, crease-resistant folding, wear-resisting flushable; 3) it has higher electrical resistivity, can have a large amount of static charges, and is difficult for disappearing after cleaning, is the good material of making the static filtrate; 4) housing adopts plastic-blasting iron plate, and protective metal net is adopted in middle filtrate both sides, avoids filter to damage filtrate when carrying and installation is cleaned, and guarantees the normal use of filter, and by pleated, makes open area increase to 1.2m ²More than, can improve filter efficiency like this, when increasing dust containing capacity, reduce filtration resistance, consider that the filter installation will be fit to primary car structure, housing is designed slot, is convenient to dismounting; 5) to filter 5 μ m grit filter efficiencys be 〉=70% to the utility model filter, can reach to make evaporator that dirty stifled effect not take place; 6) initial resistance of filter is no more than 65Pa, and whole resistance is 180Pa, does not influence air circulation, refrigerating capacity and power of fan, and filters dust containing capacity greater than 120 grams; 7) the passenger vehicle flame-retardant standard of non-metallic material, oxygen index (OI) reaches more than 28, and the 45 firing method reaches difficult combustion level; 8) Cleaning period reached continuous working more than 1500 hours, and after cleaning repeatedly, filter efficiency reaches more than 3 years at initial more than 85% of filter efficiency service life; 9) set up the activated adsorption layer, the objectionable constituent in can absorbed air are eliminated peculiar smell.

Fig. 1 is the front view of the utility model passenger train special air filter;

Fig. 2 is the side-looking part sectional view of Fig. 1.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.

The passenger train special air filter comprises filter material, and it also comprises housing 1, and described filter material adopts non-weaving cloth 3, and is folded.Described non-weaving cloth 3 is clamped in the centre of 2 layers of wire gauze 2.On the described housing 1 the plug-in mounting flange is set, so that activated adsorption layer 4 to be installed, this housing 1 is welded to form framed structure for the steel plate bending, and its surfaces externally and internally plastic-blasting is handled.

Claims (4)

1, the passenger train special air filter comprises filter material, it is characterized in that: further comprising housing (1), and described filter material adopts non-weaving cloth (3), and is folded.

2, filter according to claim 1 is characterized in that: described non-weaving cloth (3) is clamped in the centre of 2 layers of wire gauze (2).

3, filter according to claim 1 is characterized in that: described housing is provided with the plug-in mounting flange on (1), so that activated adsorption layer (4) to be installed.

4, filter according to claim 1 is characterized in that: described housing (1) is welded to form framed structure for the steel plate bending, and its surfaces externally and internally plastic-blasting is handled.