CN215244843U - Ventilation assembly, air conditioner for rail transit and rail vehicle - Google Patents

Abstract

The utility model relates to a ventilation assembly, be used for track traffic's air conditioner and rail vehicle. The negative ion generator is arranged at the air inlet of the air channel or the initial section of the air channel, so that dust particles in the air channel are adsorbed to form dust particles with large size, and the dust particles are adsorbed by the inner wall surface of the metal air channel, and the negative ions can reduce the activity of pathogenic bacteria in air flow and play a role in sterilization, so that the negative ion generator plays a role in purifying and sterilizing the air flow passing through the air channel.

Description

Ventilation assembly, air conditioner for rail transit and rail vehicle

Technical Field

The utility model relates to a ventilation assembly, be used for track traffic's air conditioner and rail vehicle belongs to rail vehicle technical field.

Background

In rail transit vehicles such as high-speed trains, motor trains, subway trains, and the like, the compartments are enclosed spaces, so ventilation and air exchange in the compartments and purification of air in the compartments are important. Air purification of this type of vehicle generally sets up air purifier at the air outlet of air conditioner and realizes at present, and its air purifier generally adopts modes such as ultraviolet lamp to disinfect, is difficult to air pollutants such as effectual elimination PM2.5, germ in the carriage, and its purification efficiency is not high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve is the current problem that is applied to the interior air purification equipment purifying effect of track traffic's vehicle is bad.

The utility model discloses a ventilation component, which is arranged on an air conditioner for a rail vehicle, comprising an air duct with one-way ventilation, wherein the air duct is provided with an air inlet and an air duct body, and the air duct body adopts a metal plate to form the inner wall surface of an electromagnetic shield; the negative ion generator is provided with a negative ion generating head which is arranged at the air inlet or at the initial section of the air channel.

Optionally, in an operating state of the ventilation assembly, there are formed a negative ion collecting region near the negative ion generating head, a negative ion diffusing region formed along the air duct, and a negative ion-and-dust particle binding region in which an electrically-charged dust particle collecting device is disposed.

Optionally, the distance between the negative ion and dust particle combining area and the negative ion generating heads is in a range of not less than 25CM when the wind speed is 1.2-2.5M/S and the number of the negative ion generating heads is 1-2; when the wind speed is 2.51-6M/S, the range is not less than 15CM when the number of the negative ion generating heads is 1-2; the initial segment is at 1/3 the duct entrance to the entire length of the duct.

Optionally, the distance between the negative ion generating head and the inner wall surface of the electromagnetic shield close to the negative ion generating head is 1/16-1/2L, wherein L is the distance between the opposite inner wall surfaces of the electromagnetic shield, the voltage of the generating head is-2000V-4000V, and the quantity of the negative ions discharged per second is 175-750 ten thousand/cubic centimeter.

Optionally, the electrically charged dust particle collecting device is a thin film type IFD, wherein the IFD comprises at least a first film which is electrically charged during operation, and a second film which is arranged at a distance therefrom, and an air duct is formed between the first film and the second film; the charged first film is coated with a dielectric material, and charged particles with the charged electric property opposite to that of the first film are adsorbed on the upper surface of the dielectric material.

Optionally, the charged dust particle collecting device is a metal laminated dust collecting device, the dust collecting device is grounded, the metal laminated dust collecting device adopts an aluminum foil layer, the aluminum foil layer seals an air outlet end face of the air duct, the thickness of the aluminum foil layer is 0.01-2 mm, the distance between the aluminum foil layers is 0.5-15 mm, the temperature of the aluminum foil layer is reduced during operation, and formed condensed water washes collected charged dust particles.

The utility model discloses still disclose an air conditioner for track traffic, including the ventilation module that the aforesaid mentioned, the air intake in wind channel is the return air inlet of air conditioner, and the air conditioner still includes: the air conditioner comprises an evaporator, a compressor, a throttling device and a condenser, wherein a first filter screen is arranged at an air inlet of an air channel.

Optionally, a dust collecting device in which a film type IFD and a metal layer are stacked is provided in order in a wind direction in a combined region of the negative ions and the dust particles behind the negative ion generating head; or a dust collector and a film type IFD stacked with metal are provided in this order in the direction of the air flow in the region where the negative ions and dust particles are bonded after the negative ion generating head.

Optionally, a metal filter screen and a field electric unit are further arranged between the charged dust particle collecting device and the negative ion generating head in the wind direction, and the field electric unit is used as a second charging device for further charging part of uncharged dust particles.

The utility model also discloses a rail vehicle is provided with foretell air conditioner in the rail vehicle, and rail vehicle includes the roof, and the roof sets up the holding chamber, and the holding air conditioner, the air conditioner top still are provided with the maintenance mouth including the maintenance base face that supplies the people to stand and operate, and shield the apron of maintenance mouth, open and to dismantle film type IFD module.

The utility model discloses a ventilation assembly sets up anion generator through air intake or the wind channel initial stage in the wind channel to this adsorbs the great dust particle of formation volume to the dust particle in the wind channel, and by metal wind channel internal face adsorption, and the anion can reduce the activity of germ in the air current simultaneously, plays bactericidal action, consequently makes anion generator play the purification bactericidal action to the air current through the wind channel.

Drawings

Fig. 1 is a perspective view of an air conditioner for rail transit according to an embodiment of the present invention;

fig. 2 is a partial schematic view of an air conditioner for rail transit according to an embodiment of the present invention;

FIG. 3 is an enlarged view of B in FIG. 2;

FIG. 4 is a perspective view of an air treatment device according to an embodiment of the present invention;

FIG. 5 is a partially exploded schematic view of an air treatment device according to an embodiment of the present invention;

FIG. 6 is an exploded view of an air treatment device according to an embodiment of the present invention;

FIG. 7 is an enlarged view of A in FIG. 6;

fig. 8 is a perspective view of a frame body of an air treatment device according to an embodiment of the present invention;

fig. 9 is a schematic view of the negative ion generator according to the embodiment of the present invention installed in the air duct body.

Reference numerals:

the air treatment device comprises an air treatment device 100, a frame body 110, a first guide rib 111, a second guide rib 112, a third guide rib 113, a wire passing groove 114, a purification unit 120, a first film 121, a second film 122, a first edge strip 123, a field electric unit 130, a corona emitter 131, a porous frame 132, a metal filter screen 140, a fixing sheet 153, an upper cover 154 and an anion generator 155;

the air conditioner comprises an air conditioner 200, a shell 210, an air return opening 211, an air outlet 212, an indoor side chamber 220, an evaporator 221, an evaporation fan 222, a sealing cover 223, an air return duct 224, an outdoor side chamber 230, a condenser 231, a condensation fan 232, a condensation side air inlet 233 and a refrigerant pipe 240.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict in structure or function. The present invention will be described in detail below with reference to examples.

The utility model provides a ventilation assembly, which is arranged on an air conditioner for a railway vehicle and comprises an air duct with one-way ventilation, wherein the air duct is provided with an air inlet and an air duct body, and the air duct body adopts a metal plate to form the inner wall surface of an electromagnetic shielding; the negative ion generator is provided with a negative ion generating head which is arranged at the air inlet or at the initial section of the air channel.

As shown in fig. 1 to 3, the air conditioner 200 includes a return air duct 224 as an initial portion of the air duct, an air return port 211, i.e., an air inlet, is disposed at one end of the return air duct 224, an inner wall surface of the air duct is formed by a sheet metal part, and the sheet metal part is grounded to form an electromagnetic shielding wall surface. An anion generator 155 is arranged at the outlet of the air return port 211 or close to the outlet of the air return port 211, and an anion sending head of the anion generator generates anions at the outlet of the air return port and continuously enters the air duct along with the air flow. The air conditioner is further provided with an evaporator 221, an evaporation fan 222, a condenser 231, a condensation fan 232, a compressor, a refrigerant pipe 240, and the like to constitute a cooling or heating system. The air conditioner 200 includes a rectangular housing 210 made of metal, and the thickness of the housing 210 is much smaller than the length and width of the housing 210, so as to form a thin installation chamber with a relative length, and the installation chamber is usually installed on the roof of a rail transit vehicle, so as to meet the requirement that the installation chamber does not occupy the passenger space capacity in the carriage space. As shown in fig. 2, the installation chamber is at least divided into two sub-chambers, namely an indoor side chamber 220 and an outdoor side chamber 230, wherein the indoor side chamber 220 is sequentially installed in the air supply direction and comprises an evaporation fan 222 and an evaporator 221, the evaporation fan 222 is connected with the air exhaust opening 212, and a plurality of detachable sealing covers can be further arranged on the surface of the indoor side chamber 220 to respectively seal the evaporation fan 222 and the evaporator 221, so that a waterproof effect is achieved. The outdoor side chamber 230 includes a condenser 231, a condensing fan 232 and a compressor (not shown), the air inlet side of the condenser is communicated with the condensing side air inlet 233, in fig. 2, there are two indoor side chambers 220, one outdoor side chamber 230, the indoor side chambers 220 are disposed at two ends of the outdoor side chamber 230, i.e. at two sides of the length direction of the housing 210, and the outdoor side chamber 230 is disposed at the middle of the length direction of the housing 210. As shown in fig. 3, one end of the air return duct 224 is the air return port 211 of the heat exchange side of the indoor chamber 220, and the other end is communicated with the air inlet surface of the evaporation fan 222. Taking the air conditioner 200 operating in the cooling mode as an example, the airflow from the outside of the air conditioner 200 enters the air duct 224 through the air return port 211 and then enters the air duct, at this time, the anion generator 155 operates to generate a large amount of anions, and the generated charged anions can adsorb the tiny dust particles in the air duct to form negatively charged dust particles with larger volume, and can destroy the activity of germs in the air, thereby playing a certain role in sterilization. Because the wall surface forming the air duct body adopts the metal plates of the sheet metal parts, the metal plates are grounded, and when the air flow containing dust particles passes through the wall surfaces, the grounded metal wall surfaces can form a certain adsorption effect on the negatively charged dust particles, so that the dust of the air flow in the air duct body is reduced.

Therefore, the negative ion generator 155 is arranged at the air inlet of the air duct or the initial section of the air duct, so that dust particles in the air duct are adsorbed to form dust particles with large size, and the dust particles are adsorbed by the inner wall surface of the metal air duct, and the negative ions can reduce the activity of pathogenic bacteria in air flow and play a role in sterilization, so that the negative ion generator 155 plays a role in purifying and sterilizing the air flow passing through the air duct.

In some embodiments of the present invention, in the working state of the ventilation assembly, an anion accumulation region near the anion generating head is formed, an anion diffusion region formed along the air duct, and an anion and dust particle binding region, and a charged dust particle collecting device is provided in the anion and dust particle binding region.

The negative ion concentration is highest near the negative ion generating head to form a negative ion gathering area, millions of negative ions are released every second when the negative ion generating head works, and the specific concentration range can reach 280-750 ten thousand/cubic centimeter. Then the negative ions are diffused in the air duct along the air flow direction to form a diffusion area, and the concentration of the negative ions in the diffusion area is lower relative to that in the concentration area and is lower the farther away from the concentration area. In the space of the air duct further away from the accumulation area, the negative ions of the air duct are diffused into the whole space of the air duct and combined with dust particles in the air flow in the space to form dust particles with larger volume, thereby forming a combined area of negative ions and dust particles, wherein one end of the combined area is provided with a charged dust particle collecting device, a plurality of electrode plates which are arranged in parallel are arranged in the charged dust particle collecting device, a high-voltage electric field is loaded between the electrode plates, so that dust particles which are negatively charged due to the combination with negative ions pass through the electrode plates and are adsorbed by the positively charged electrode plates, thereby collecting the dust particles and thereby removing the dust particles from the air stream before it enters the evaporator, and the subsequent cleanness of evaporimeter is combined, the purification efficiency of clean dust particle can be promoted, the cleanliness factor of the air of following the air conditioner exhaust is improved.

In some embodiments of the present invention, the distance between the negative ion and dust particle binding region and the negative ion generating head is not less than 25CM when the wind speed is 1.2-2.5M/S and the number of negative ion generating heads is 1-2; when the wind speed is 2.51-6M/S, the range is not less than 15CM when the number of the negative ion generating heads is 1-2; the initial segment is at 1/3 the duct entrance to the entire length of the duct. The air flow speed is generated by a fan arranged in the air duct, and when the air speed is higher, the negative ion concentration in the air flow is lower, so that the negative ion generating head is closer to the combining area, and the negative ion concentration meets the requirement, namely, the air speed is higher, and the negative ion generating head is closer to an electric charge dust particle collecting device such as an IFD (Intense Field Dielectric) to enable the negative ions with the same concentration to form an adsorption effect on the dust particles in the air duct body. For example, when the wind speed is 1.2-2.5M/S, the distance between the negative ion generating head and the binding area can be selected to be some distance values of 30CM, 50CM, 70CM and 80CM in the case that the wind inlet of the wind channel body is about 100CM away from the charged dust particle collecting device; and at wind speed of 2.51-6M/S, the distance between the anion generating head and the binding region can be selected to be some distance values of 20CM, 30CM, 40CM, 50 CM.

In some embodiments of the present invention, the distance between the negative ion generating head and the inner wall surface of the electromagnetic shield near the negative ion generating head is 1/6 to 1/2L, wherein L is the distance between the opposite inner wall surfaces of the electromagnetic shield in the direction of the distance, the voltage of the negative ion generating head is-2000V to-4000V, and the amount of negative ions discharged per second is 175 and 750 ten thousand/cubic centimeters. Here, L is a distance between one side of the air duct body closest to the negative ion generating head and the opposite side in the cross section formed along the vertical airflow direction. As shown in fig. 9, the side of the square is a cross section of the air duct body formed along the vertical air flow direction, and a distance L1 between the side of the negative ion generator 155 closest to the negative ion generating head, i.e., the bottom side, is 1/6 to 1/2 of the length L between the bottom side and the top side. The closer the negative ion generating head is to the central area of the section, the better the airflow has a diffusion effect on the negative ions, so that the more uniform the negative ions in the air duct body are distributed. The closer the negative ion generating head is to the inner wall surface, the more the inner wall surface of the metal affects the amount of negative ions generated by the negative ion generating head, so that the amount of negative ions is reduced. But the closer to the central region of the cross-section, the more inconvenient the negative ion generator 155 is to be installed. Therefore, in consideration of both the installation convenience and the diffusion effect of negative ions, an appropriate value is selected, and the distance values can be selected to be 1/5L, 1/4L, 1/3L, and 1/2L.

In some embodiments of the present invention, the electrically-charged dust-particle collecting device is an IFD of the thin-film type, wherein the IFD comprises a first film which is electrically charged at least during operation, and a second film which is disposed at an interval therefrom, and an air duct is formed between the first film and the second film; the charged first film is coated with a dielectric material, and charged particles with the charged electric property opposite to that of the first film are adsorbed on the upper surface of the dielectric material.

As shown in fig. 4 to 8, the charged dust particle collecting device is disposed in the air processing device 100, the air processing device 100 includes a frame body 110, and a purifying unit 120 disposed therein, an inner cavity of the frame body 110 is used for air to pass through to form an air duct; the purification unit 120 comprises a first membrane 121 charged at least during operation and a second membrane 122 arranged at an interval with the first membrane 121, and an air duct is formed between the first membrane 121 and the second membrane 122; the charged first film 121 is coated with a dielectric material, and charged particles having a charge opposite to the charge of the first film 121 are adsorbed on the upper surface of the dielectric material. The purifying unit 120 is composed of a plurality of rows of first membranes 121 and second membranes 122 which are arranged at intervals in sequence, vertical insulating medium materials with the functions of isolation and support are arranged between the parallel first membranes 121 and second membranes 122, so that honeycomb-shaped air inlet units are formed, each honeycomb forms an air duct for air to pass through, insulating dielectric materials are arranged on at least the surface of each first membrane 121, each first membrane 121 is made of conductive materials, and the surface of each first membrane is covered with the insulating dielectric materials, so that when air passes through the air duct, negatively charged dust particles in the air are adsorbed by the surface of the first membrane 121 with opposite polarity, most of the negatively charged particles are dust particles in the air, such as pollutant particles like PM2.5, and therefore the purposes of collecting the pollutant particles and cleaning the air are achieved.

And the frame body 110 is made of a metal material such as an aluminum alloy, a steel material, or an iron material. Different from common household equipment, the rail transit vehicle can vibrate in the running process, and equipment in a carriage needs to bear large inertia force when the rail transit vehicle runs at a high speed and brakes, so that the requirement on the strength of the equipment is relatively high, the frame made of metal materials can meet the strength requirement, a good protection effect on the purification unit 120 is achieved, and the phenomenon that the vibration or the inertia force is stressed or impacted to deform and damage is avoided. Moreover, a high voltage is applied between the first film 121 and the second film 122 of the purifying unit 120, and during the operation, a static induction phenomenon is generated to the surrounding devices, so that the surrounding devices are charged with high voltage static electricity, which may interfere and damage the circuit operation of the low voltage devices, for example, if there is a control circuit board around, if the housing 210 for mounting the circuit board or the circuit board body is charged with the static electricity, the components on the circuit board may be damaged, and even the circuit board may not work normally, while the frame of the vehicle body of the rail transit is mostly sheet metal parts, the whole frame of the vehicle body is grounded, and when the metal frame body 110 is mounted in the vehicle, the metal frame body 110 is grounded, so that the grounded metal frame body 110 neutralizes the charges generated by the static induction, so that the potential on the surface of the metal frame body 110 is equal to the ground, and thus no static induction is generated to the surrounding devices any more, that is, the metal frame body 110 functions as an electrostatic shield. This eliminates the negative effects of static electricity on surrounding equipment, thereby playing a role in eliminating the negative effects caused by the high voltage of the purification unit 120, and improving the operational reliability and safety of the entire apparatus.

Further, the surface of the second film 122 may be coated with an insulating dielectric material that is the same as the surface of the first film 121, the second film 122 is also a conductive material, and the polarity of the voltage applied to the second film 122 is opposite to the polarity of the voltage applied to the first film 121, so that a strong electric field is formed between the first film 121 and the second film 122, so that the charged particles are adsorbed on the surface of the first film 121 or the second film 122 with the opposite polarity to the charging polarity when passing through the air duct. Compared with the way of applying a voltage to only the first membrane 121, the way of applying a voltage with opposite polarity to the second membrane 122 can form a stronger adsorption effect on the charged particles, thereby realizing a better collection effect on the pollutant particles.

In some embodiments of the present invention, the power supply of the first membrane 121 is positive or negative, and the voltage range is 3000V to 8000V, such as 6000V, which can be positive 6000V or negative 6000V, so as to adsorb the charged particles opposite to the power supply on the first membrane 121. Further, the second membrane 122 is loaded with a voltage with a polarity opposite to that of the first membrane 121, the voltage loaded on the second membrane 122 may be negative or positive, or may be directly grounded, and the voltage loaded on the second membrane 122 keeps the voltage between the first membrane 121 and the second membrane 122 in a range of 3000V to 8000V, taking the voltage as 6000V as an example, for example, when the first membrane 121 is loaded with positive 6000V or negative 6000V, the second membrane 122 may be directly grounded, so that the voltage between the two is 6000V; alternatively, the first membrane 121 is charged with a positive 4000V, the second membrane 122 is charged with a negative 2000V, such that the voltage between the two is also 6000V, or the first membrane 121 is charged with a negative 4000V, and the second membrane 122 is charged with a positive 2000V. This satisfies the voltage range, so that the electric field between the first film 121 and the second film 122 forms a strong adsorption effect on the charged particles. Taking the example of the electric field formed by grounding the first film 121 loaded with negative 6000V and the second film 122, when negatively charged particles enter between the first film 121 and the second film 122, the negatively charged particles are repelled by the negative voltage of the first film 121, and the negatively charged particles are neutralized by the grounded second film 122, so that the negatively charged particles are adsorbed, and the working process principle of the adsorption effect is not difficult to be found according to the existing principle that like charges repel and opposite charges attract under the condition that voltages are loaded on the other first film 121 and the second film 122.

In some embodiments of the present invention, as shown in fig. 5, the frame body 110 includes a guide structure for cooperating with the purifying unit 120. A plurality of first guide ribs 111 protruding from the inner sidewall surface are provided on the inner sidewall surface of the frame body 110, and the plurality of first guide ribs 111 may be integrally formed with the frame body 110 to increase the strength thereof. The first guide rib 111 may be a separate sheet metal member, and as shown in fig. 5, the sheet metal member is fixed to the inner wall surface of the frame body 110 by welding, caulking, or the like. The first guide rib 111 facilitates guiding of the purification unit 120 during installation, and also serves as a position limiting function for the purification unit 120 to limit movement of the purification unit 120 in the direction of airflow passing. And the bottom plate and the side plate of the frame body 110 are integrally formed, and the inner wall surface of the bottom plate can be provided with a limiting structure such as a rubber block to limit the bottom of the purifying unit 120, and also prevent the bottom of the purifying unit 120 from being collided and deformed with the bottom plate due to vibration or inertia in the running process of the vehicle, so that the elastic buffer effect is achieved.

An upper cover 154 is further provided on the frame body 110, the upper cover 154 is fixed to the frame body 110 by a fixing member such as a screw, and the purification unit 120 is fixed to the inner space of the frame body 110 by the upper cover 154 and the first guide rib 111.

In some embodiments of the present invention, as shown in fig. 8, a plurality of second guide ribs 112 and third guide ribs 113 are further disposed on the side wall of the frame body 110, and the guide ribs have the same function as the first guide ribs 111, and respectively perform the function of guiding and limiting the field electric unit 130 and the filter screen 140.

In some embodiments of the utility model, still be provided with first high pressure module (not shown in the figure) in purifying unit 120, set up boost circuit in the first high pressure module for step up according to the low voltage direct current of input, with this output high pressure, voltage direct current if first high pressure module input is 12V or 24V, generate positive 6000V high pressure through boost circuit boost, this positive high pressure output electricity is connected to first membrane 121, first membrane 121 is connected with the public earthing terminal of first high pressure module, with this electric field that forms 6000V.

Specifically, in some embodiments of the present invention, the purification unit 120 includes a first edge 123 in which a power supply wire is disposed to communicate with the plurality of first membranes 121, and the other end of the power supply wire communicates with a first output end of the first high voltage module; the first high-voltage module is arranged in the first edge 123 and fixed in the first edge 123 through glue seal; the power supply device further comprises a power supply wire communicated with the plurality of second films 122, the other end of the power supply wire is communicated with a second output end of the first high-voltage module, the power supply wire is arranged on a second edge strip, and the thickness of the second edge strip is smaller than that of the first edge strip 123. As shown in fig. 3, the first edge strip 123 is disposed at one side of the purification unit 120, such as the right side of fig. 3, and has a certain thickness for accommodating a first high voltage module, which has two output ends, wherein the first edge strip 123 is further provided therein with power supply lines respectively communicating with all the first membranes 121, and the power supply lines are further electrically connected with one of the output ends of the first high voltage module, such as the first output end, and the other side of the purification unit 120 is provided with a second edge strip, which has a narrower thickness, because a space for accommodating the first high voltage module is not required, and power supply lines respectively communicating with all the second membranes 122 are disposed in the second edge strip, and the power supply lines are finally and commonly electrically connected to the other output end of the first high voltage module, such as the second output end, so as to electrically connect the first membrane 121 and the second membrane 122 through the two output ends of the first high voltage module, so that a high voltage electric field is formed between the first film 121 and the second film 122.

In some embodiments of the present invention, fixing structures are further provided on both sides of the frame body 110 to fix the frame body 110 in the vehicle frame. As shown in fig. 6 and 8, the fixing structure is a fixing plate 153 disposed on both sides of the frame body 110, a through hole for a fixing member such as a screw or a screw to pass through is disposed on the fixing plate 153, and the fixing plate 153 may be integrally formed with the sides of the frame body 110 or fixed to the sides by welding or riveting as shown in fig. 5. The fixing sheet 153 is used for stably and reliably fixing the frame body 110 in the vehicle frame, so that the equipment such as the purification unit 120 installed in the frame body 110 is prevented from being damaged by shaking or inertia in the high-speed running process of the vehicle, and the fixing sheet 153 and the vehicle frame are fixed through a fixing piece made of a metal material, such as a screw nut, so that the frame body 110 and the vehicle frame are well electrically connected, namely well grounded, so that the frame body 110 and the metal filter screen 140 form an effective electrostatic shielding effect on high voltage in the field electric unit 130 and the purification unit 120, and the running reliability of the whole equipment is improved.

The utility model discloses an in some embodiments, lotus electric dust particle collection device is metal stacking's dust collecting device, and the dust collecting device ground connection sets up, and metal stacking adopts the aluminium foil layer, and its air-out terminal surface that seals the wind channel, and the thickness on aluminium foil layer is 0.05 to 3 millimeters, and the interval on aluminium foil layer is 0.5 millimeters to 15 millimeters, and this aluminium foil layer temperature reduces during the operation, and the comdenstion water that forms erodees the lotus electric dust particle who collects.

In this embodiment, the metal-laminated dust collecting device is mainly provided in the evaporator 221 in the air conditioner. In the above embodiment, the evaporator 221 is formed by laminating aluminum foil layers to form fins, and when the air conditioner is in a cooling operation, the dust particles in the air duct are adsorbed by negative ions to form larger dust particles with relatively larger volume, and then a part of the dust particles are adsorbed by the metal wall surface and enter the metal laminated dust collecting device arranged in the evaporator 221. Because evaporimeter 221 includes range upon range of aluminium foil layer and heat exchange tube, the aluminium foil layer forms heat transfer fin, and heat exchange tube and refrigerant pipe 240 intercommunication, the heat exchange tube wear to locate in the mounting hole of aluminium foil layer, and the low temperature cold volume of the low temperature refrigerant in the heat exchange tube conducts to aluminium foil layer through the heat exchange tube wall to this makes microthermal aluminium foil layer carry out the refrigeration heat transfer to the air through it. Because the radiating fins of the evaporator 221 have a certain width, the evaporator 221 has a certain thickness, and the aluminum foil layers are densely arranged, the distance between the aluminum foil layers is 0.5 mm to 15 mm, and when the air conditioner 200 works in a vehicle for refrigeration, condensate water can be generated on the surface of the fins of the evaporator 221, so that dust particles in an air duct can be adsorbed and absorbed by the condensate water on the surface of the fins formed by the densely distributed aluminum foil layers when passing through the evaporator 221, and the condensate water flows downwards along the surfaces of the vertically arranged fins, so that the flushing benefit is formed on the surfaces of the fins, and the dust particles are continuously removed while the fins are cleaned. Therefore, the dust collecting device is arranged in the evaporator 221 through the air outlet end face of the air duct and is formed by metal aluminum foil metal lamination, condensed water generated on the metal aluminum foil can be better adsorbed on dust particles, and the air cleanliness is improved.

The utility model discloses still provide an air conditioner for track traffic, as shown in fig. 1 to 3, air conditioner 200 includes the ventilation module that above-mentioned embodiment mentioned, and the air intake in wind channel is the return air inlet of air conditioner, and the air conditioner still includes: the evaporator 221, a compressor (not shown), a throttling device (not shown), and the condenser 231, a first filter screen (not shown) is disposed at the air inlet of the air duct. The first filter screen that air intake department set up realizes damming to great dust particle and hair in the air current to avoid these dusts to take place the head to produce the pollution to the anion in the wind channel body, and then reduce the ability that the anion produced. The first filter screen can be made of metal or common plastic.

In some embodiments of the present invention, a film type IFD and a metal laminated dust collecting device are sequentially disposed in a wind direction in a combination region of negative ions and dust particles behind a negative ion generating head; the difference from the above described embodiment is that the IFD and the dust collecting device are arranged in sequence in the combining area, wherein the integrated device here is arranged in the evaporator 221.

The fin surface that evaporator 221's metallic aluminum foil formed can produce the comdenstion water, because evaporator 221 sets up in the air-out terminal surface in wind channel, most dust particle in the wind channel is adsorbed by the anion and becomes behind the great dust particle of volume and behind the electronegative, probably there still exist the minority not adsorbed by the anion and electronegative, these dust particle or dust particle are adsorbed by most like the dust particle of IFD electronegative through the electric-charged dust particle collection device, still can have a small amount of dust particle and dust particle not adsorbed by IFD and flow out from IFD, this part dust particle is at last through the aluminium foil layer of intensive distribution this moment, thereby flow down after being absorbed by the comdenstion water, with this absorption to dust particle of more thorough realization, make the air current cleanliness factor that flows out from evaporator 221 promote. Moreover, the evaporator 221 and the metal frame of the air conditioner 200 are well fixed to realize good grounding, so that the densely distributed aluminum foil layers form a static shielding surface for the high voltage inside the static unit, and the reliability problem caused by abnormal operation of the air conditioner 200 due to the static induction phenomenon caused by the high voltage of the static unit to the electric control board or the signal transmission line arranged at the accessory of the evaporator 221 is solved. Particularly, when the electrostatic unit is turned on and off, the high voltage variation thereof may generate an electromagnetic interference signal to interfere with surrounding signal lines, and may seriously affect the operation of the rail vehicle in which the entire air conditioner 200 is installed, thereby causing a safety problem. Therefore, the metal laminated dust collecting device is used as the air outlet end of the air duct, dust particles in the air are further adsorbed, and meanwhile the electrostatic shielding effect is achieved, so that the operation reliability and safety of the air conditioner 200 and even the rail vehicle are improved.

Or in some embodiments of the present invention, a dust collecting device and a film-type IFD are provided in this order in the direction of the air flow in the region where the negative ions and dust particles are bonded after the negative ion generating head. The difference from the previous embodiment is in the arrangement order of the dust collecting device and the IFD, and the dust collecting device is in front of the IFD and behind the IFD in the air blowing direction in this embodiment. That is, after the IFD is disposed behind the evaporator 221, a part of dust particles in the air flow is first removed by the condensed water collecting flush flow on the fins of the evaporator 221, and then the rest is absorbed by the IFD. This arrangement results in a reduction of dust particles entering the IFD, thereby enabling an extended cleaning maintenance cycle of the IFD.

In some embodiments of the present invention, between the charged dust particle collecting device and the negative ion generating head, the metal filter 140 and the field electric unit 130 are further disposed in the wind direction sequence, and the field electric unit 130 further charges part of the uncharged dust particles as the second charged device. In this embodiment, in order to avoid the interference caused by the electrostatic induction generated by the high voltage of the IFD to the peripheral electronic control devices, the metal filter mesh 140 is disposed upstream in the air supply direction, as shown in fig. 4 to 8, the metal filter mesh 140 is disposed in the frame body capable of being disposed and mounted with the IFD, and the metal filter mesh is grounded through good contact with the metal frame body, so that the electrostatic shielding effect is achieved while the dust particles in the air flow are primarily filtered, and the interference generated by the high voltage of the IFD to the peripheral electronic control devices is avoided, thereby improving the operational reliability of the air conditioner 200 and the vehicle. Due to the grounding of the metal filter mesh 140, when the negatively charged dust particles in the air flow pass through the metal filter mesh 140, the negative electricity of a part of the dust particles can be neutralized by the densely distributed mesh electricity, so that the adsorption effect of the charged first film or second film can be reduced when the dust particles enter the IFD, and the purification rate is reduced. In order to solve this problem, a field device is additionally provided between the IFD and the metal filter 140, as shown in fig. 4 to 8, the field unit 130 charges the part of the uncharged dust particles and also charges the charged dust particles to a greater extent, so that the dust particles in the air flow passing through the field device are substantially all charged, and then the air flow passes through the IFD and the middle-year dust collecting device arranged in the evaporator 221 for two times of adsorption, so that the cleanliness of the air flow discharged finally is improved.

Specifically, the field electric unit 130 includes a plurality of discharge tips for charging airborne dust particles in the air, and a second high voltage module (not shown) is further disposed in the field electric unit 130 for supplying power to the field electric unit 130. The field electric unit 130 mainly charges dust particles in the air to charge the dust particles, and then the dust particles are adsorbed by a high-voltage electric field formed between the first membrane 121 and the second membrane 122 when the airflow enters the purifying unit 120, so that the air purifying function is completed. Wherein the field electric unit 130 comprises a porous frame 132 made of metal material and a plurality of corona emitters 131, the porous frame 132 is arranged at the front end of the air intake direction, the corona emitters 131 are arranged at the rear end, uniformly distributed gaps are formed on the porous frame 132, a corona emitter 131 formed by a discharge tip is correspondingly arranged at the center of each gap, wherein the group of the porous frame 132 and the corona emitters 131 is respectively electrically connected with two output ends of the second high-voltage module, the voltage output by the second high-voltage module is generally higher than the voltage output by the first high-voltage module so as to achieve the purpose of ionizing air, for example, the voltage output by the second high-voltage module can reach about 10KV, for example, the low-voltage end, namely the common ground end, of the second high-voltage module is connected with the porous frame 132, and the high-voltage end is connected with the group of the corona emitters 131, so that the tip of each corona emitter 131 generates ion current for ionizing air, its ion flow moves towards the porous frame 132 under the electric field left and right, and when the air passes through the field electric unit 130, its airborne dust particles collide with the ion flow and are charged, forming a charging effect, and then enter the purification unit 120 to be adsorbed. The second high voltage module may also be disposed in one side of the field unit 130, as shown in fig. 3, the right side of the field unit 130 is wider, so that the second high voltage module is accommodated therein, and a power supply end is formed at the side to supply power by external direct current.

In some embodiments of the present invention, as shown in fig. 1 and fig. 2, the number of the return air ducts 224 in the indoor side chamber 220 is two, and the return air ducts are respectively disposed on two sides of the air treatment device 100, the evaporator 221 and the evaporation fan 222 arranged side by side, and the outside air of the air conditioner 200 enters the return air ducts 224 from the two return air inlets 211 and enters the air inlet surfaces thereof from two sides of the filter screen 140 of the air treatment device 100, so that the air flow distribution of the air inlet surfaces is more uniform and the air flow is larger. And a plurality of detachable sealing covers 223 are arranged in the indoor side chamber 220, and the sealing covers 223 are distributed and seal chamber parts corresponding to the two air return channels 224, the air processing device 100 and the evaporator 221 and the evaporation fan 222. Thereby facilitating separate removal of the sealing caps 223 for maintenance of the devices.

The utility model also provides a rail vehicle is provided with the air conditioner 200 that above-mentioned embodiment provided in this rail vehicle, and rail vehicle includes the roof, and the roof sets up the holding chamber, and the holding air conditioner, air conditioner top still are provided with the maintenance mouth including the maintenance base face that supplies the people to stand and operate, and shield the apron of maintenance mouth, open and to dismantle film type IFD module.

The air conditioner 200 is installed in the vehicle in several ways, one way is to arrange an installation opening matched with the size of the air conditioner 200 at the top of the vehicle so as to install the air conditioner 200, and the upper surface of the air conditioner 200 is directly exposed out of the top of the vehicle, for example, a vehicle suitable for a subway can install the air conditioner 200 by adopting the installation way; the other mode is that a mounting opening and a top cover are arranged at the top of the vehicle, the air conditioner 200 is mounted in the mounting opening, the top cover covers the upper surface of the air conditioner 200, and a corresponding air outlet is arranged at the air exhaust side of the condensing fan 232 so that the condensing fan 232 can exhaust the air flow after heat exchange to the outside of the roof. The top cover is provided with a pressure bearing face, and a detachable access opening is further formed in a corresponding position of the air treatment device 100 so as to maintain components of the air treatment device 100. Both of these arrangements allow the cleaning unit 120, the field unit 130, and the filter screen 140 of the air treatment device 100 to be drawn out from the roof of the vehicle for maintenance such as dust cleaning.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A ventilation assembly is arranged on an air conditioner for a railway vehicle, and comprises an air duct with one-way ventilation, wherein the air duct is provided with an air inlet and an air duct body; the negative ion generator is provided with a negative ion generating head which is arranged at the air inlet or at the initial section of the air channel.

2. The ventilation assembly of claim 1, wherein in an operational state of the ventilation assembly, a negative ion collecting region is formed adjacent to the negative ion generating head, a negative ion diffusing region is formed along the air passage, and a negative ion-and-dust particle binding region is formed in which an electrically charged dust particle collecting device is disposed.

3. The ventilation assembly as claimed in claim 2, wherein the distance between the negative ion and dust particle binding region and the negative ion generating head is in the range of not less than 25CM when the number of the negative ion generating heads is 1 to 2 pieces at a wind speed of 1.2 to 2.5M/S; when the wind speed is 2.51-6M/S, the range of the negative ion generating heads is not less than 15CM when the number of the negative ion generating heads is 1-2; the initial segment is at 1/3 the duct entrance to the entire length of the duct.

4. The ventilation assembly of claim 2, wherein the negative ion generating head is spaced from the inner wall surface of the electromagnetic shield proximate thereto by a distance of 1/16 to 1/2L, where L is the spacing between the opposing inner wall surfaces of the electromagnetic shield, the voltage of the generating head is-2000V to-4000V, and the number of negative ions discharged per second is 175-750 ten thousand/cubic centimeter.

5. A ventilation assembly as claimed in claim 2, wherein said electrically-charged dust particle collecting means is an IFD of the thin film type, wherein said IFD includes at least a first film which is electrically charged during operation, and a second film spaced therefrom, with a ventilation duct formed therebetween; the charged first film is externally coated with a dielectric material, and charged particles with the charged electric property opposite to that of the first film are adsorbed on the upper surface of the dielectric material.

6. The ventilation assembly of claim 2, wherein the electrically-charged airborne particle collecting device is a metal-laminated dust collecting device, the dust collecting device is grounded, the metal-laminated dust collecting device employs an aluminum foil layer, the aluminum foil layer closes an air outlet end face of the air duct, the thickness of the aluminum foil layer is 0.01-2 mm, the distance between the aluminum foil layers is 0.5-15 mm, the temperature of the aluminum foil layer is reduced during operation, and the collected electrically-charged airborne particles are washed by formed condensed water.

7. An air conditioner for rail transit, comprising the ventilation assembly as claimed in any one of claims 2 to 6, wherein the air inlet of the air duct is a return air inlet of the air conditioner, the air conditioner further comprising: the air conditioner comprises an evaporator, a compressor, a throttling device and a condenser, wherein a first filter screen is arranged at an air inlet of an air channel.

8. The air conditioner according to claim 7, wherein a dust collecting device of a film type IFD and a metal laminate is provided in order in a wind direction in a region where the negative ions and dust particles are combined after the negative ion generating head; or the metal laminated dust collector and the film type IFD are arranged in the air blowing direction in this order in the negative ion and dust particle binding region behind the negative ion generating head.

9. The air conditioner according to claim 8, wherein a metal filter and a field electric unit are further provided in the order of the wind direction between said electrically charged dust particle collecting device and said negative ion generating head, the field electric unit serving as a second charging device for further charging a part of the electrically uncharged dust particles.

10. A rail vehicle, characterized in that, set up the air conditioner according to any one of claims 7 to 9 in the rail vehicle, rail vehicle includes the roof, and the roof sets up the holding chamber, holds the air conditioner, and the air conditioner top includes the maintenance base plane that supplies the people to stand and operate, still is provided with the maintenance mouth, and shields the apron of maintenance mouth, opens and can dismantle film type IFD module.

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