CN215042752U - Air duct inner structure and air conditioner for rail transit - Google Patents

Abstract

The utility model relates to a wind channel inner structure and air conditioner that is used for track traffic. Through set up metal filters and field electricity unit along the air flow direction order, metal filters shields whole wind channel, field electricity unit includes the discharge electrode, this discharge electrode forms the electric field in the metal filters direction, metal filters and discharge electrode's shortest distance is greater than 10CM, when playing with this and carrying out elementary filterable with the dust, avoid field electricity unit to be located the low-voltage apparatus of metal filters one side like automatically controlled board and control wire production electrostatic induction, with the operation of disturbing or haring these low-voltage apparatus, thereby the operational reliability of whole air conditioner and vehicle has been promoted.

Description

Air duct inner structure and air conditioner for rail transit

Technical Field

The utility model relates to a wind channel inner structure and air conditioner that is used for track traffic 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. Cleaning devices of electrostatic cleaning technology, which currently use IFD (Intense Field Dielectric) as a material, are increasingly used in this category. When IFD installs in the vehicle, be different from domestic clarifier or apply to the air conditioner in, because the carriage is the metal material of sheet metal component generally, and the space of installation is compact, still intensive weak current equipment such as control lines, controller of distribution around IFD, its IFD during operation can produce high-voltage electric field and produce the side effect of electrostatic induction to these weak current equipment on every side, even disturb its normal operating influence whole vehicle operation's stability when serious.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs solve solves the current air purification equipment operation in-process that adopts IFD in being applied to track traffic's the vehicle, produces the problem that the electrostatic induction disturbed the operation of weak current equipment on every side.

Specifically, the utility model discloses a wind channel inner structure, it sets up at the air conditioner that is used for track traffic, and wind channel intercommunication air intake and air exit set up metal filters and field electricity unit along the air flow direction order, and metal filters shields whole wind channel, and the field electricity unit includes discharge electrode, and this discharge electrode forms the electric field in the metal filters orientation, and metal filters is greater than 10CM with discharge electrode's shortest distance.

Optionally, the number of the metal filter screens is 1 to 3, the metal filter screens are arranged in the metal frame body and slide in the frame body through guide grooves, maintenance installation inner plates are arranged on the metal frame body, sealing structures are pasted on the inner sides of the maintenance installation inner plates, and the upper sides of the metal filter screens are abutted to the sealing structures.

Alternatively, the field electric unit is detachably disposed in a metallic frame body connected to an air conditioner for rail transit through a fixing structure.

Optionally, the air duct is provided with a tube-fin heat exchanger on the downstream side of the field unit, the windward side of the tube-fin heat exchanger covers the ventilation surface of the air duct, and the shortest distance between the discharge electrode of the field unit and the heat exchanger is greater than 0.5 CM.

Optionally, an IFD module is further disposed between the field electric unit and the tube-fin heat exchanger, and the IFD module is provided with a horizontal conductive film formed by a first film and a second film disposed at intervals, the horizontal conductive film is loaded with a voltage ranging from 5000V to 8000V, and the first film and the second film are loaded with voltages of opposite polarities; or one of the first membrane and the second membrane is loaded with positive or negative voltage, and the other is grounded; the horizontal conductive film is coated with films up and down through an insulating material; IFD module upper portion still is provided with second installation inner panel, and its inboard is pasted and is had seal structure, the higher authority and the seal structure butt of IFD module.

Optionally, a tube-in-tube electric heater is further disposed on the downstream side of the finned tube heat exchanger, and a metal heating tube bent into a plane shape is formed on the air duct and covers the ventilation surface of the air duct.

Optionally, the air inlet is communicated with a return air channel arranged outside the air conditioner, an air inlet cavity is formed between the air inlet and the metal filter screen, the air inlet cavity is of a metal plate structure, a heating element is further arranged in the air inlet cavity, and the return air passes through the metal filter screen after passing over the heating element.

Optionally, the heating element is disposed on the control circuit board, wherein the heating element is one or more of an inductor, a switching tube, a rectifying element, and a capacitor; and at least one heating element generates electric field and/or electromagnetic change in the running-stopping process, and the closest heating element is 1CM away from the metal filter screen.

The utility model discloses still disclose an air conditioner for track traffic, including foretell wind channel inner structure, including the access cover, from the opening that the access cover shielded, can extract or insert metal filters.

Optionally, the IFD module has a corresponding third mounting inner plate.

The utility model discloses a wind channel inner structure, through setting up metal filters and field electricity unit along the air flow direction order, metal filters shields whole wind channel, the field electricity unit includes discharge electrode, this discharge electrode forms the electric field in the metal filters direction, metal filters is greater than 10CM with discharge electrode's shortest distance, play with this and carry out primary filterable while meeting the dust, avoid the field electricity unit to produce the electrostatic induction like automatically controlled board and control wire to the low-voltage apparatus that is located metal filters one side, with the operation of disturbing or haring these low-voltage apparatus, thereby the operational reliability of whole air conditioner and vehicle has been promoted.

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 structure diagram 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;

reference numerals:

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

the air conditioner comprises an air conditioner 200, a shell 210, an air inlet 211, an air outlet 212, an indoor side chamber 220, an evaporator 221, an evaporation fan 222, a sealing cover 223, an air inlet chamber 224, an outdoor side chamber 230, a condenser 231, a condensation fan 232, a condensation side air inlet 233, a tube row type electric heater 234, a refrigerant tube 240 and an electric control box 250.

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 wind channel inner structure, as shown in fig. 1 to fig. 3, it sets up at the air conditioner 200 that is used for rail transit, wind channel intercommunication air intake 211 and air exit 212 set up metal filters 140 and field electricity unit 130 along the air flow direction order, metal filters 140 shields whole wind channel, field electricity unit 130 includes discharge electrode, this discharge electrode forms the electric field in metal filters 140 direction, metal filters 140 is greater than 10CM with discharge electrode's shortest distance.

As shown in fig. 1 and 2, the air conditioner for rail transit is provided with an air inlet 211 at the bottom thereof and an air outlet 212 at one side thereof, and an air flow enters from the air inlet 211, passes through the metal filter 140 and the field electric unit 130 in sequence, and is finally discharged from the air outlet 212 of the air conditioner. Wherein the metal filter screen 140 performs primary filtering on dust in the air flow, and the field electric unit 130 performs charging on dust particles remaining in the air flow, so that the dust particles are charged with high voltage.

As shown in fig. 4 to 8, the field electric unit 130 includes a plurality of discharge tips for charging airborne dust particles, 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 when the airflow enters the purifying unit 120, the dust particles are adsorbed by a high-voltage electric field formed between the first film 121 and the second film 122 of 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. 6, 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.

A metal filter 140 made of metal is disposed on the air intake side of the field unit 130. As shown in fig. 4 and 5, the metal filter screen 140 is a dense metal screen, so as to primarily filter dust in the air, and adsorb larger dust particles on the metal screen. And a certain distance is formed between the metal filter mesh 140 and the field electric unit 130, the distance is in the range of 15 mm to 70 mm, for example, 30 mm can be set, the distance needs to be a certain proper distance, if the distance is too short, the distance is too close to each other, a discharge effect is formed between the corona emitter 131 and the metal filter mesh 140, and therefore the effect of generating ion current between the corona emitter 131 and the porous frame 132 is influenced, and the electric field intensity of the field electric unit 130 is reduced, so that the ionization effect on air is influenced. And metal filters 140 with proper distance also play a role in electrostatic shielding of high voltage electricity of field electric unit 130, and prevent field electric unit 130 from generating electrostatic induction to low voltage equipment such as an electric control board and a control wire on one side of metal filters 140 to interfere or damage the operation of the low voltage equipment, thereby improving the operation reliability of the whole air conditioner and vehicle.

The density of the metal filter screen 140 is 50-150 meshes, if the mesh number is too small, the metal filter screen cannot perform a primary filtering effect on dust particles, so that the dust entering the field electric unit 130 is too large and accumulates at the tip of the corona emitter 131 to generate pollution, and the ion flow generated by the dust filter screen is greatly influenced after a long time, so that the charging effect of the dust filter screen on a dust shell is reduced; when the mesh number is too large, a large wind resistance is formed on the airflow, and the size of the air outlet volume of the air conditioner is affected. Specifically, the number of the metal filter screen 140 can be selected to be 70 meshes, so that a shielding effect is formed, further, the number can be selected to be 100 meshes, a good dust filtering effect is further formed, and the number can also be selected to be 140 meshes, so that the best dust filtering effect is obtained under the condition that no resistance is formed on air flow. In order to obtain a better dust filtering effect, a plurality of metal filter screens 140 may be arranged in parallel.

In some embodiments of the present invention, the metal filter screen 140 is disposed in the frame body 110 and slides in the frame through the guide slot, and a maintenance installation inner plate is disposed thereon, and the inner side of the maintenance installation inner plate is pasted with the sealing structure, and the upper side of the metal filter screen abuts against the sealing structure. As shown in fig. 6 and 8, the metal filter 140 is disposed in the frame body 110 made of metal, and the frame body 110 includes a guide structure for guiding the metal filter 140 to be mounted in the frame body 110, wherein the guide structure is a guide groove formed by the third guide rib 113. The sealing structure is made of elastic materials such as sponge and spring, when the metal filter screen 140 is installed, after the metal filter screen is inserted into the frame body 110 through the guide groove, the inner plate is covered and maintained, the sealing structure is pressed, so that the bottom edge of the metal filter screen is in close contact with the bottom of the frame body 110 to form good electric connection, and the metal filter screen 140 is well grounded through the frame body 110, so that the good shielding effect on the field electric unit 130 is achieved.

In some embodiments of the present invention, the field unit 130 is detachably disposed in the metal frame body 110, and the frame body 110 is connected to an air conditioner for rail transit through a fixing structure. As shown in fig. 3 to 7, the guiding structure of the frame body 110 further includes another guiding groove formed by the second guiding rib 112 to provide a guide for the field electric unit 130 when being installed in the frame body 110, and the fixing structure may be a metal fixing piece 153 disposed at both sides of the frame body 110, the fixing piece 153 being integrally formed with the side edge of the frame body 110, or being connected by welding or riveting, so as to fix the frame body 110 in the air conditioner by the fixing piece 153 based on a fixing member such as a screw or a bolt, because the frame in the air conditioner is a sheet metal member, the fixing piece 153 enables the frame body 110 to be electrically connected with the metal frame of the air conditioner well, i.e., a good ground is achieved, and finally, the metal filter mesh 140 can be guaranteed to be grounded well.

In some embodiments of the present invention, the air duct is provided with a fin-tube heat exchanger at the downstream side of the field unit 130, the windward side of the fin-tube heat exchanger covers the ventilation surface of the air duct, and the shortest distance between the discharge electrode of the field unit 130 and the heat exchanger is greater than 0.5 CM. As shown in fig. 1 to 3, the fin-tube heat exchanger is an evaporator 221 disposed in the air conditioner, and includes stacked aluminum foil layers and heat exchange tubes, the heat exchange tubes are disposed in mounting holes of the aluminum foil layers, and low-temperature cooling capacity of a low-temperature refrigerant in the heat exchange tubes is conducted to the aluminum foil layers through walls of the heat exchange tubes, so that the low-temperature aluminum foil layers perform cooling and heat exchange on air passing through the aluminum foil layers. The evaporator 221 and the field electric unit 130 are arranged in parallel in the air blowing direction of the air flow, and the distance between the evaporator 221 and the field electric unit is very short, and the distance between the evaporator and the field electric unit is set to be 0.5cm to 5cm, for example, about 2 cm. Since the evaporator 221 is also grounded with the metal frame of the air conditioner 200 as a whole, in the above embodiment, when the field unit 130 works, the corona emitter 131 of the high voltage generates electrostatic induction phenomenon to the surrounding devices, and the evaporator 221 is disposed near the air outlet side of the field unit 130, so that the aluminum foil layers of the evaporator 221, which are densely distributed, form a good electrostatic shielding surface, and the metal filter mesh 140, the metal frame body 110 and the upper cover 154 are added, so as to form a metal shielding cavity around the high voltage of the field unit 130, thereby completely eliminating the electrostatic induction, avoiding the damage of the high voltage inside the air treatment device 100 to the surrounding low voltage devices due to the electrostatic induction, and finally improving the operation reliability of the whole air conditioner 200. And at the moment that the field unit 130 is powered on and powered off, the high voltage inside the field unit 130 is instantaneously turned on and off, thereby generating electromagnetic interference. Since the installation space of the vehicle is compact, other devices or communication lines may exist around the air conditioner 200, for example, when a communication line for controlling the vehicle passes near the frame body 110, electromagnetic interference generated by the connection and disconnection of the high voltage may affect the transmission of the line number in the communication line, and may change the communication signal when the signal is severely distorted, thereby causing malfunction in control and causing the safety of the vehicle operation. It is therefore important to ensure that signal transmission and equipment operation during vehicle operation do not interfere, i.e., that EMI (electromagnetic interference) immunity is achieved. The metal shielding cavity is formed by the grounding of the evaporator 221, the metal frame body 110, the metal filter screen 140 and the upper cover 154, and electromagnetic interference signals are shielded in the cavity and cannot be transmitted to the outside or be severely attenuated, so that the purpose of avoiding parameter interference on peripheral equipment or signal transmission lines is achieved. Thereby improving the operational reliability of the whole vehicle operation.

Furthermore, the evaporator 221 is disposed downstream of the field unit 130, and the evaporator 221 can absorb the remaining dust in the airflow passing through the field unit 130, because the evaporator 221 has densely distributed aluminum foil fins, which can generate condensed water during the cooling operation, thereby enhancing the absorption of dust particles.

Specifically, the discharge electrode of the field unit 130, i.e., the corona emitter 131, and the evaporator 221 may be 1CM, 2CM, 3CM, 4CM, and 5CM, and the distance cannot be too close or too far, so that the corona emitter 131 may generate a discharge effect between the aluminum foils of the evaporator 221 when the distance is too close, thereby affecting the charging effect on the dust, and the distance is too far, thereby affecting the electrostatic shielding effect, and therefore, it is necessary to select a suitable distance. Such a distance value is determined according to the area size of the field electric unit 130 and the evaporator 221, and if the area of the field electric unit 130 and the evaporator 221 is relatively large, a larger distance value can be selected, otherwise a smaller distance value should be selected.

In some embodiments of the present invention, an IFD module is further disposed between the field electric unit 130 and the tube fin heat exchanger, the IFD module is provided with a horizontal conductive film formed by a first film 121 and a second film 122 disposed at an interval, a voltage range loaded by the horizontal conductive film is 5000V to 8000V, and polarities of voltages loaded by the first film and the second film are opposite; or one of the first film 121 and the second film 122 is loaded with a positive or negative voltage, and the other is grounded; the horizontal conductive film is coated with films up and down through an insulating material; IFD module upper portion still is provided with second installation inner panel, and its inboard is pasted and is had seal structure, the higher authority and the seal structure butt of IFD module. As shown in fig. 6 and 7, a purification unit 120 is further disposed in the frame body 110, the purification unit 120 is an IFD module, and 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, and at least the surface of the first membrane 121 is provided with an insulating dielectric material, the first membrane 121 is made of a conductive material, and the surface of the first membrane is covered with the insulating dielectric material, so that charged particles which are opposite to the polarity of the electric voltage loaded on the first membrane 121 in the air are adsorbed on the surface of the first membrane 121 when the air passes through the air duct, and most of the charged particles are dust particles in the air, such as pollutant particles like PM2.5, and the like, so that the collection of the pollutant particles is realized, and the purpose of cleaning the air is realized.

The metal filter screen 140, the field unit 130 and the purification unit 120, which are sequentially arranged in the air intake direction, are installed in the frame body 110 to form the integrated air treatment device 100, so as to perform the functions of primary filtering, charging and adsorbing dust particles in the air, and thus perform the air purification function.

And further by an elastic material such as sponge attached inside the second mounting inner plate, the purification unit 120 is abutted in the mounting space inside the frame body 110 when the second mounting plate is internally fixed to the frame body 110. Specifically, the inner sidewall surface of the frame body 110 is provided with a plurality of first guide ribs 111 extending out of the inner sidewall surface, and the plurality of first guide ribs 111 may be integrally formed with the frame body 110 to increase the strength thereof. First direction muscle 111 also can be solitary sheet metal component, and the direction when first direction muscle 111 makes things convenient for purification unit 120 to install also plays the position limiting displacement to purification unit 120 simultaneously to inject purification unit 120 and pass through the ascending removal in the direction at the air current. After the purification unit 120 is installed in the frame body 110 through the guide of the first guide rib 111, the second installation inner plate provided with the sealing structure is installed, so that the purification unit 120 is reliably fixed, a limiting structure such as a rubber block can be further arranged on the inner wall surface of the bottom plate of the frame body 110, the bottom of the purification unit 120 is limited, and the bottom of the purification unit 120 is prevented from being impacted and deformed by vibration or inertia in the running process of a vehicle, so that the elastic buffering effect is achieved.

The frame body 110 may further be provided with an upper cover 154, the upper cover 154 is fixed to the frame body 110 by a fixing member such as a screw, and the field unit 130 and the purification unit 120 are reliably fixed in the frame body 110 by fixing the upper cover 154 to a first mounting plate (not shown) and a second mounting plate (not shown) to meet the requirement of stability of the apparatus in vibration caused by a vehicle traveling at a high speed.

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 present invention, the tube fin heat exchanger downstream side is further provided with a tube row type electric heater 234, which forms a metal heating tube bent into a plane shape on the air duct, and covers the ventilation surface of the air duct. As shown in fig. 1 to 3, the tube-in-tube electric heater 234 is disposed in parallel with the evaporator 221, and has an area through which air passes substantially the same as that of the evaporator 221, thereby covering the ventilation surface of the air duct. The metal heating pipe plays a role in auxiliary heating when the air conditioner heats so as to improve the heating quantity, and meanwhile, because the high temperature generated in the working process exceeds 120 degrees, the metal heating pipe can play a good role in sterilizing the air flow output from the evaporator 221, and can further eliminate a small amount of residual germs attached to dust particles in the air flow so as to further improve the purification and sterilization effects on the air. Furthermore, since the evaporation fan 222 is disposed at the air outlet 212 of the air conditioner, that is, the evaporation fan 222 is located at the downstream of the air supply direction of the evaporator 221, since the motor of the evaporation fan 222 is generally a dc motor, and the PWM signal of the control device is a low-voltage weak-current signal, the PWM signal is easily affected by the electrostatic induction of the high-voltage electricity of the purification unit 120 and the field unit 130, especially, at the moment of powering on and powering off the purification unit 120 and the field unit 130, since the high-voltage electricity is also switched on and off accordingly, a strong electromagnetic interference signal is generated, and the interference signal interferes with the PWM signal, which may distort the PWM signal to cause the abnormal rotation speed of the dc motor, thereby causing the problems of unstable operation and malfunction of the air conditioner. The evaporation fan 222 and the evaporator 221 are further provided with the tube bank type electric heater 234, and the shell of the tube bank type electric heater 234 is fixed on the metal frame of the air conditioner and is grounded with the metal frame of the air conditioner at the same time, so that the tube bank type electric heater 234 can further enhance the electromagnetic shielding of the high-voltage signals and the shielding of electromagnetic interference signals, the operation of the direct current motor is stable and reliable, and the operation reliability of the air conditioner is finally improved.

In some embodiments of the utility model, as shown in fig. 1 to fig. 3, the air intake intercommunication sets up the return air passageway (not shown in the figure) outside the air conditioner to can further communicate the setting at outdoor fresh air passageway (not shown in the figure), the outdoor new trend that the fresh air passageway introduced and the indoor return air that the return air passageway introduced mix the back and get into the air intake, form air inlet chamber 224 between air intake and the metal filters 140, be the sheet metal construction in the air inlet chamber 224, still be provided with heating element in the air inlet chamber 224, after the return air has skipped this heating element a little, pass metal filters 140. The mixed air flow of indoor return air and outdoor fresh air entering from the air inlet reaches the metal filter screen 140 through the air inlet cavity 224, dust particles in the air flow are removed through the metal filter screen 140, the field electric unit 130 and the purification unit 120, and then the mixed air flow passes through the evaporator 221 and the electric heating pipe and finally is output from the evaporation fan 222 and is discharged out of the air conditioner through the air outlet 212.

The heating element is disposed in the electrical control box 250, the electrical control box 250 contains a control circuit board for controlling the operation of the air conditioner, the control circuit board contains a processor, and also contains power devices for driving electrical devices such as a motor of the evaporator fan 222, an electrical heating tube, and the like, and the power devices include one or more of an inductor, a switching tube, a rectifying element, and a capacitor. A fan may also be disposed within the electronic control box 250 to dissipate heat generated by the operation of the power devices. The fan accelerates the airflow in the electrical control box 250, thereby increasing the airflow velocity exiting the electrical control box 250, and consequently the dust particles in the exiting airflow increase, thereby increasing the dust particle density around the electrical control box 250. As shown in fig. 2, the electric control box 250 is disposed on one side of the metal filter screen 140, and the middle circulation is sent out from the air inlet cavity 224 and then enters the metal filter screen 140, so as to cool the electric control box 250, thereby performing an indirect cooling function on the heating element therein, and because the density of dust particles around the electric control box 250 is increased, a primary filtering function on the dust particles can be performed through the metal filter screen 140, and the metal filter screen 140 also performs a shielding function on the high-voltage electrostatic induction and electromagnetic interference signals generated by the field electric unit 130 and the purification unit 120, thereby preventing the interference signals from affecting the operation of the voltage equipment such as the MCU in the electric control box 250, and finally causing the operation failure of the whole air conditioner.

The distance between the electric control box 250 and the metal filter screen 140 is greater than 1CM, so that a path for air flow to pass through is formed, and the phenomenon that the air flow entering the metal filter screen 140 forms wind resistance due to too close distance is avoided, and the heat dissipation of the electric control box 250 is also influenced.

The embodiment of the utility model provides a still provide an air conditioner for track traffic, as shown in fig. 1 to fig. 3, including the wind channel inner structure that above-mentioned embodiment mentioned, including the access cover, from the opening that the access cover shielded, can extract or insert metal filters 140.

The air conditioner further includes an evaporator 221, an evaporation fan 222, a condenser 231, a condensation fan 232, a compressor, a refrigerant pipe 240, and the like, so as to form 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. 1 and 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, an evaporator 221 and an air processing device 100, the evaporation fan 222 is connected with the air exhaust port 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, the evaporator 221 and the air processing device 100, so as to achieve a waterproof effect. 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 connected to the condensing side air inlet 233, as shown in fig. 3, one end of the air inlet chamber 224 is the air inlet 211, and the other end is connected to the air inlet surface of the metal filter 140. Taking the air conditioner 200 working in the cooling mode as an example, the air flow from the outside of the air conditioner 200 enters the metal filter 140 through the air inlet cavity 224 for primary filtering to filter out large-diameter dust particles in the air, then passes through the field electric unit 130 to be charged, i.e., charged, and then passes through the purification unit 120 to be adsorbed, so that most of the dust particles in the air are adsorbed to form clean air, and the clean air enters the evaporator 221 for heat exchange, and is cooled to be cold air by the refrigeration of the evaporator 221, and then enters the evaporation fan 222 through the tube-type electric heater 234, and finally is discharged from the air outlet 212 of the air conditioner 200, and the cold air is conveyed to the inside of the vehicle cabin through the air outlets of the air ducts connected with the air outlet 212 and arranged at two sides of the vehicle cabin. The evaporator 221 includes stacked aluminum foil layers and heat exchange tubes, the heat exchange tubes are communicated with the refrigerant tubes 240, the heat exchange tubes are arranged in mounting holes of the aluminum foil layers in a penetrating manner, and low-temperature cold of low-temperature refrigerants in the heat exchange tubes is conducted to the aluminum foil layers through heat exchange tube walls, so that the low-temperature aluminum foil layers carry out refrigeration and heat exchange on air passing through the low-temperature aluminum foil layers. The evaporator 221 and the frame body 110 of the air processing device 100 are arranged in parallel in the air blowing direction of the air flow, and the distance between the evaporator 221 and the frame body is set to be 0.5cm to 5cm, for example, about 2 cm. Since the evaporator 221 is grounded together with the metal casing 210 of the air conditioner 200, in the above-mentioned embodiment of the air treatment device 100, when the purifying unit 120 operates, the high voltage membrane of the purifying unit 120 generates electrostatic induction phenomenon to the surrounding devices, and besides the purifying unit 120, the field unit 130, the high voltage applied to the discharge tip of the field unit 130 and opposite to the ground, also generates electrostatic induction phenomenon to the surrounding devices, by arranging the evaporator 221 close to the air outlet side of the air treatment device 100, i.e. the air outlet side of the purifying unit 120, the densely distributed aluminum foil layers of the evaporator 221 form a good electrostatic shielding surface, and adding the metal filter screen 140 on the air inlet side of the air treatment device 100, and the metal frame body 110 and the upper cover 154, so as to form a metal shielding cavity around the high voltage electricity of the purifying unit 120 and the field unit 130, thereby completely eliminating the electrostatic induction and avoiding the damage of the high voltage electricity inside the air treatment device 100 to surrounding low voltage equipment caused by the electrostatic induction, thereby finally improving the operation reliability of the whole air conditioner 200. Also, at the instant when the air treatment device 100 is powered on and off, the high voltage inside the purification unit 120 and the field unit 130 is instantaneously turned on and off, thereby generating electromagnetic interference. Since the installation space of the vehicle is compact, other devices or communication lines may exist around the air conditioner 200, for example, when a communication line for controlling the vehicle passes near the frame body 110, electromagnetic interference generated by the connection and disconnection of the high voltage may affect the transmission of the line number in the communication line, and may change the communication signal when the signal is severely distorted, thereby causing malfunction in control and causing the safety of the vehicle operation. It is therefore important to ensure that signal transmission and equipment operation during vehicle operation do not interfere, i.e., that EMI (electromagnetic interference) immunity is achieved. The metal shielding cavity is formed by the grounding of the evaporator 221, the metal frame body 110 and the upper cover 154 of the metal filter screen 140, and electromagnetic interference signals are shielded in the cavity and cannot be transmitted to the outside or severely attenuated, so that the purpose of avoiding parameter interference on peripheral equipment or signal transmission lines is achieved. Thereby improving the operational reliability of the whole vehicle operation.

Moreover, since the heat dissipating fins of the evaporator 221 have a certain width, so that the evaporator 221 has a certain thickness, and when the air conditioner 200 is in a cooling operation in a vehicle, condensed water is generated on the fin surfaces of the evaporator 221, and there may be some remaining dust particles in the air coming out of the purifying unit 120 of the air treatment device 100, for example, a lot of dust particles accumulated on the first film 121 and the second film 122 of the purifying unit 120 after a long time of use are not cleaned in time, which may reduce the ability of the purifying unit 120 to adsorb dust particles, so that there may be some amount of dust particles in the air coming out from the purifying unit 120, and at this time, when the air enters the evaporator 221 again, the heat exchanging fins, which are relatively wide and densely distributed with respect to the thickness of the purifying unit 120, may continue to adsorb the dust particles, because the dust particles are charged by the field electric unit 130, and heat transfer fin is grounded, electrified dust particle meets the fin of ground connection and carries out the electric potential neutralization like this, with this make the fin to these dust particle production stronger adsorption efficiency, and because the surface of fin has still condensed the comdenstion water, the comdenstion water has further strengthened the absorption to dust particle, thereby make the dust particle who comes out from purification unit 120 can be effectual by evaporimeter 221 fin absorption, and because gravity flows away downwards by the comdenstion water absorption, and can not accumulate on the surface of fin, thereby long-time work can not influence the adsorption efficiency of fin to dust particle yet. Therefore, the evaporator 221 is disposed in front of the air outlet direction of the air processing device 100, so as to form electrostatic shielding and electromagnetic interference shielding effects, and simultaneously, perform an adsorption effect on the dust particles leaked from the purifying unit 120, so that the cleanliness of the air output from the air conditioner 200 is finally ensured. Thereby functioning as an enhancement to clean air in conjunction with the air treatment device 100.

After the purification unit 120, i.e., the IFD module, of the air treatment device 100 is installed in the frame body 110, a third installation plate (not shown) may be provided, because the dust collection extent of the metal filter screen 140, the field electric unit 130 and the purification unit 120 is different over time, and therefore the time for maintenance and cleaning is different, for example, the IFD module of the purification unit 120 collects most dust, and therefore the time for maintenance is shortest, and generally 1 month needs to be cleaned, while the field electric unit 130 and the purification unit 120 collect less dust, and generally 3 months or half a year needs to be cleaned, so that these three components are respectively fixed corresponding to different installation plates, and each component is separately assembled and disassembled during maintenance.

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. The utility model provides an air flue inner structure, its sets up at the air conditioner that is used for track traffic, air flue intercommunication air intake and air exit, its characterized in that sets up metal filters and field electricity unit along the air flow direction order, metal filters shields whole air flue, and field electricity unit includes the discharge electrode, and this discharge electrode is in form the electric field in the metal filters direction, metal filters with discharge electrode's shortest distance is greater than 10 CM.

2. The structure in an air duct according to claim 1, wherein the number of the metal filter screens is 1 to 3, the metal filter screens are arranged in a metal frame body and slide in the frame body through guide grooves, a maintenance installation inner plate is arranged on the metal filter screens, a sealing structure is adhered to the inner side of the maintenance installation inner plate, and the upper edges of the metal filter screens are abutted to the sealing structure.

3. The structure in wind channel according to claim 2, characterized in that the field electric unit is detachably disposed in the metal frame body, and the metal frame body is connected to the air conditioner for rail transit through a fixing structure.

4. The structure in the air duct according to any one of claims 1 to 3, wherein the air duct is provided with a tube-fin heat exchanger on the downstream side of the field electric unit, the windward side of the tube-fin heat exchanger covers the ventilation surface of the air duct, and the shortest distance between the discharge electrode of the field electric unit and the heat exchanger is greater than 0.5 CM.

5. The structure in the air flue according to claim 4, wherein an IFD module is further arranged between the field electric unit and the tube-fin heat exchanger, the IFD module is provided with a horizontal conductive film formed by a first film and a second film which are arranged at intervals, the voltage applied to the horizontal conductive film ranges from 5000V to 8000V, and the voltage applied to the first film and the second film has opposite polarities; or one of the first membrane and the second membrane is loaded with positive or negative voltage, and the other is grounded; the horizontal conductive film is coated with films up and down through an insulating material; IFD module upper portion still is provided with second installation inner panel, and its inboard is pasted and is had seal structure, the higher authority of IFD module with seal structure butt.

6. The structure in the air duct according to claim 5, wherein the tube-fin heat exchanger is further provided with a tube-in-tube electric heater at the downstream side, and a metal heating tube bent in a planar shape is formed on the air duct to cover the ventilation surface of the air duct.

7. The air duct inner structure according to any one of claims 1 to 3, wherein the air inlet is communicated with a return air channel arranged outside the air conditioner, an air inlet cavity is formed between the air inlet and the metal filter screen, the air inlet cavity is of a sheet metal structure, a heating element is further arranged in the air inlet cavity, and the return air passes through the metal filter screen after passing through the heating element.

8. The structure in wind channel according to claim 7, characterized in that the heating element is arranged on the control circuit board, wherein the heating element is one or more of inductance, switch tube, rectifying element, and capacitor; and at least one heating element can generate electric field and/or electromagnetic change in the running-stopping process, and the closest heating element is 1CM away from the metal filter screen.

9. An air conditioner for rail transit comprising the air duct inner structure according to any one of claims 5 to 8, characterized by comprising an access cover from which the opening to be shielded is extracted or into which the metal filter net is inserted.

10. The air conditioner for rail transit of claim 9, wherein the IFD module of the in-duct structure has a corresponding third mounting inner panel.

Images