JP6203506B2 - Exhaust mist capture device for air dryer equipment - Google Patents

Description

  The present invention is for an air dryer apparatus that separates and stores moisture, oil, dust, and the like from purge air during purge processing of the air dryer apparatus for removing moisture from service air used in service brakes, air suspensions, etc. in automobiles and the like. The present invention relates to a discharge mist capturing device.

For example, in large vehicles such as trucks and buses, air compressed to a predetermined pressure (for example, about 10 kgf / cm ² ) by an air compressor is stored in an air tank, and this compressed air (service air) is used as an operating power source. Service brake systems that are used as a part of the system and air suspension systems that use compressed air instead of coil springs and leaf springs are used.

Here, the air compressed by the air compressor is in a state where water is likely to be generated due to condensation of water vapor contained compared to the normal atmospheric pressure state.
In addition, there may be a case where lubricating oil for lubricating an air compressor including a crank mechanism and a piston that are rotationally driven by an engine is mixed in the compressed air.

  For this reason, if the air compressed by the air compressor is stored in the air tank as it is and the compressed air is supplied to various air systems such as a service brake system, corrosion or fouling occurs at the part where the compressed air comes into contact. As a result, there is a risk of adversely affecting the reliability of the system, for example, causing a malfunction in various air systems.

  For this reason, before the air compressed by the air compressor is stored in the air tank, it is dried by an air dryer device to remove oil and purify it.

As an example of such an air dryer device, there is a device as described in Patent Document 1, for example, as shown in FIG. 5, when the air compressor 20 is in a load state where air is compressed (at the time of loading). Takes the compressed air into the air dryer device 10 from the inlet port 11, guides and passes the introduced compressed air to the filter 13 of the filter chamber 12, collects oil, dust, etc., and then guides it to the drying chamber 14. It is like that.
In the drying chamber 14, the moisture contained in the compressed air is absorbed and removed by the desiccant 15 accommodated in the drying chamber 14, and then the compressed air passes through the purge chamber 16 and the outlet 17 to the air tank 30. Has been led to.

On the other hand, when the pressure in the air tank 30 reaches a predetermined pressure (for example, about 10 kgf / cm ² ), the pressure regulator 40 operates and the air compressor 20 is brought into a no-load state (unload state) in which air is not compressed. However, in this state, the purge valve 18 is opened, and so-called purge processing is performed in which the compressed air in the purge chamber 16 is discharged to the outside while passing through the drying chamber 14 and the filter chamber 12.

  In addition, by this purging process, the moisture in the drying chamber 14 (the moisture adsorbed by the desiccant or the moisture accumulated in the bottom, etc.), the oil or dust in the filter chamber 12 (the oil collected in the filter 13, Dust and the like, and oil and dust collected at the bottom are discharged to the outside, and the desiccant 15 and the filter 13 are regenerated.

Japanese Utility Model Publication No. 5-26136 No. 7-8020 Japanese Utility Model Publication No. 6-76798

  By the way, when purge processing is performed to regenerate the desiccant 15 and the filter 13 using purge air at a predetermined pressure, moisture, oil, and the like accumulated in the air dryer device 10 are discharged from the drain 19 into the air and the ground along with the purge air. Since it is ejected toward the surface, there is a risk that the nearby wall or ground may be soiled, and it is desirable to prevent the moisture containing such oil from being inadvertently discharged to the outside.

  For this reason, in the air dryer device described in Patent Document 2 and Patent Document 3, purge air containing moisture and oil is guided to the drain tank, and the oil and moisture can be temporarily stored in the drain tank. As described above, the drain provided in the drain tank is released at an appropriate time and place, so that the oil and moisture are not inadvertently discharged outside the drain tank.

  However, the air dryer devices described in Patent Document 2 and Patent Document 3 require maintenance for draining oil, moisture, and the like from the drain tank, which is troublesome and burdensome for the driver and the like. There is the actual situation.

  The present invention has been made in view of such circumstances, and can reduce troublesome maintenance while having a simple and low-cost configuration and inadvertently discharge moisture, oil, dust, and the like to the outside. It is an object of the present invention to provide an exhaust mist capturing device for an air dryer device that does not have a risk of fouling nearby walls or the ground and that has little adverse effect on the environment.

For this reason, the present invention
Air dryer device exhaust for separating and storing mist containing at least moisture from purge air discharged during air dryer device purge processing in an air system that is stored in an air tank and used in an air tank that stores air that is compressed by an air compressor A mist capturing device,
A storage unit for storing at least water separated from the purge air as a liquid substance;
A heating device is provided in the housing part,
Wherein the heating device, which in so that only water is evaporated out of the housing portion liquid substance contained in, to control the temperature of the material accommodated in the accommodating portion liquid to about 60-80 ° C And

  According to the present invention, it is possible to reduce troublesome maintenance while having a simple and low-cost configuration, and inadvertently draining water, oil, dust, etc. It is possible to provide an exhaust mist capturing device for an air dryer device that has no fear of fouling and has little adverse effect on the environment.

1 is an overall configuration diagram schematically showing an overall configuration of an air dryer system including an exhaust mist capturing device for an air dryer device according to an embodiment of the present invention. It is sectional drawing which expanded and showed the discharge mist capture | acquisition apparatus for air dryer apparatuses which concern on embodiment same as the above. It is a perspective view which shows an example of the electrothermal heater utilized for the discharge mist capturing apparatus for air dryer apparatuses which concerns on embodiment same as the above. It is sectional drawing which shows an example at the time of applying a heat insulating material (heat insulation mat) to the discharge mist capturing apparatus for air dryer apparatuses which concerns on embodiment same as the above. It is a whole block diagram for demonstrating the structural example of the conventional air dryer system.

  Hereinafter, an embodiment of a discharge mist capturing apparatus for an air dryer apparatus according to the present invention will be described with reference to the accompanying drawings. In addition, this invention is not limited by embodiment described below.

As shown in FIG. 1, the exhaust mist capturing apparatus 100 for an air dryer apparatus according to the present embodiment includes purge air (including mist such as moisture and oil) discharged from a drain 19 of the air dryer apparatus 10 during a purge process. And a pressure of about 10 kgf / cm ² , and a unit time flow rate of about 4 L / second) is introduced through the inlet pipe 120 into the whole amount. In addition, the description which abbreviate | omits the same element as the element already demonstrated is attached | subjected, and the description is abbreviate | omitted.

  2 is an enlarged cross-sectional view of the exhaust mist capturing device 100 for an air dryer device shown in FIG.

  As shown in FIGS. 1 and 2, the inlet pipe 120 functioning as a purge air introduction passage is configured by an L-shaped tubular member having a predetermined length, and has an inlet portion 120A at the bottom of the exhaust mist capturing device 100 for an air dryer device. Is disposed in the space of the substantially cylindrical catch tank 110 having a space inside, and the outlet end 120B is disposed so as to extend upward of the catch tank 110. ing.

  While the outlet end 120B of the inlet pipe 120 is closed, a plurality of openings 121 are provided in the vertical part of the way to the outlet end 120B of the inlet pipe 120, and the surrounding area has air bubbles. A water separation promoting element 130 is provided.

  As the air / water separation promoting element 130, a mesh such as resin or metal, a porous material, a punching member (member having a punched opening) such as resin or metal, a metal filter net (for example, metal scrubbing, etc.) Or the like in which a metal in a strip shape or a belt shape is gathered into a predetermined shape).

  In addition, a plate-like element 140 is provided below the air-water separation promoting element 130, and the plate-like element 140 allows a plurality of openings 121 and the air-water separation chamber 150 on the air-water separation promoting element 130 side to A mist storage chamber 160 in which mist (water or oil) separated from the purge air by the water separation chamber 150 is stored is defined. The plate-like element 140 is provided with a through hole 141 for guiding mist (water, oil, etc.) separated from the purge air to the mist storage chamber 160 on the side of the steam / water separation chamber 150. The mist storage chamber 160 corresponds to a storage unit according to the present invention.

  Furthermore, the upper end of the catch tank 110 is covered with a cap 170, but a communication passage 171 is provided for communicating the inside and the outside of the catch tank 110 with a predetermined degree of communication.

  In the exhaust mist capturing device 100 for an air dryer apparatus having such a configuration, purge air (including mist such as moisture and oil) discharged from the drain 19 during the purge process of the air dryer apparatus 10 is, for example, the inlet 120A. It is introduced into the inlet pipe 120 via a flexible hose 19A or the like connected to the pipe.

  The purge air introduced into the inlet pipe 120 travels toward the outlet end 120B and is ejected from a plurality of openings 121 in the middle.

  The ejected purge air collides with the air / water separation promoting element 130 to promote air / water separation, and is constituted by a member having a relatively small ventilation resistance such as a punching metal or a coarse mesh. The mist (water or oil) contained in the purge air is separated from the purge air by being introduced into the steam / water separation chamber 150 through the partition wall 131 for supporting 130.

  The mist (water or oil) separated from the purge air in the steam / water separation chamber 150 becomes a liquid substance, travels along the inner wall surface, and is stored in the mist storage chamber 160 through the through hole 141 of the plate-like element 140. It has come to be.

  On the other hand, the purge air after the mist is removed is discharged to the outside through the communication passage 171 provided in the cap 170.

  Therefore, according to the present embodiment, mist (moisture, oil, etc.) is effectively separated from the purge air, and the separated mist is stored in the mist storage chamber 160 as a liquid substance, but does not include mist. Since only purge air can be discharged to the outside through the communication path 171, there is no risk of inadvertently polluting nearby walls or the ground by inadvertently discharging moisture, oil, dust, etc. It is possible to provide a catch tank for an air dryer device that has less adverse effects on the air dryer.

  By the way, when a predetermined amount of moisture, oil, or the like is stored in the mist storage chamber 160 (in other words, after a predetermined time has elapsed since the last discharge), the driver or the operator opens the drain cock 180 that is a drain unit. Maintenance work is required to operate and discharge the contained moisture or oil to the outside.

  Such frequent maintenance work such as periodically discharging and discarding moisture and oil contained in the mist storage chamber 160 increases the burden on the driver and the operator. It would be beneficial if this burden could be reduced. For this reason, the following configuration is adopted in the present embodiment.

  That is, in this embodiment, as shown in FIGS. 1 and 2, an electrothermal heater 200 as a heating device is provided in the mist storage chamber 160 provided at the bottom of the discharge mist capturing device 100 for an air dryer device. ing. The heating device is not limited to the electric heater. For example, it is possible to use at least one heat of exhaust gas, cooling water, or lubricating oil of an internal combustion engine.

  The electric heater 200 heats and raises the temperature of a liquid substance such as moisture or oil contained in the mist accommodation chamber 160, and evaporates particularly the moisture of the liquid substance. . The electric heater 200 can be configured by including one or a plurality of substantially annular elements as shown in FIG. However, the present invention is not limited to this, and a configuration in which one or a plurality of rod-shaped members such as glow plugs are arranged may be employed.

  Further, in the present embodiment, as shown in FIG. 2, a thermostat 210 that controls the energization of the electric heater 200 by detecting the temperature of a liquid substance such as moisture or oil contained in the mist storage chamber 160. The thermostat 210 controls the temperature of a liquid substance such as moisture and oil contained in the mist storage chamber 160 to a predetermined temperature (about 60 to 80 ° C. as will be described below). Be able to.

  More specifically, when the thermoresponsive element (thermowax, bimetal, etc.) of the thermostat 210 senses a predetermined temperature, the thermoresponsive element is driven to turn off the energization circuit (switch, etc.) to the electric heater 200. While stopping energization, at a temperature lower than a predetermined temperature, the thermoresponsive element is driven to turn on the energization circuit (switch or the like) to energize the electrothermal heater 200, whereby the mist storage chamber 160 is energized. The temperature of moisture and oil contained in the container is controlled to a predetermined temperature.

  A temperature sensor for detecting the temperature of a liquid substance such as moisture and oil contained in the mist storage chamber 160 is provided, and the electric heater 200 is energized by the vehicle or the engine control unit based on the temperature detection result. It is also possible to adopt a configuration in which the temperature is controlled to a predetermined temperature.

  Here, since the mist separated from the purge air contains more moisture than the oil, if the moisture can be removed by evaporation, the liquid substance accommodated in the mist accommodation chamber 160 can be limited to the oil. Therefore, the volume can be greatly reduced. For example, since the volume can be reduced to about 1/3 by evaporating water, the maintenance work interval can be extended by about three times.

  On the other hand, if the temperature is raised to a temperature at which the oil component volatilizes, adverse effects due to odors and volatile substances occur, so it is important not to raise the temperature to a temperature at which the oil component does not volatilize.

  For this reason, the present inventors perform various experiments and control the temperature of moisture and oil contained in the mist storage chamber 160 to be about 60 to 80 ° C., thereby improving the moisture. It was confirmed that it can be evaporated and is suitable as a temperature range that does not volatilize oil and has little environmental impact.

  For this reason, in the present embodiment, the temperature of the liquid substance such as moisture and oil contained in the mist accommodation chamber 160 is controlled to about 60 to 80 ° C., thereby evaporating moisture well. As a result, it is possible to greatly extend the period until oil is accumulated in the mist storage chamber 160 and it is time to discharge (disposal), so the maintenance work interval can be extended. As a result, it is possible to reduce the burden on the driver and the operator, and to provide a convenient catch tank for an air dryer device that is easy to use.

  In addition, according to the present embodiment, the temperature of the liquid substance (moisture, oil, etc.) accommodated in the mist accommodating chamber 160 is controlled to about 60 to 80 ° C., so that only the moisture is evaporated, Since the oil component is not volatilized, it is possible to provide a catch tank for an air dryer apparatus that also considers the influence on the environment.

  In the present embodiment, the configuration in which the inlet pipe 120 is introduced from the bottom side of the catch tank 110 and bent into an L shape to provide a plurality of openings 121 near the approximate center of the catch tank 110 is illustrated. However, the present invention is not limited to this, and a configuration may be adopted in which a plurality of openings 121 are provided near the center of the catch tank 110 by being introduced from the upper part of the catch tank 110.

  In the present embodiment, a window or a liquid level meter for confirming the liquid level (liquid level position) of the liquid substance (moisture, oil, etc.) stored in the mist storage chamber 160 may be provided. it can.

  By the way, in this Embodiment, although equipped with the electrothermal heater 200 for heating the water | moisture content, oil component, etc. which are accommodated in the mist storage chamber 160 of the discharge mist capture | acquisition apparatus 100 for air dryer apparatuses, such an electrothermal type is provided. Even if the heater 200 is provided, the temperature of the mist storage chamber 160 and the temperature of the liquid substance (moisture or oil) stored in the mist storage chamber 160 due to a decrease in the outside air temperature or wind speed due to the influence of traveling wind or the like. May decrease.

  For this reason, in the present embodiment, a heat insulating material (heat insulating mat) is provided around the discharge mist capturing device 100 for an air dryer device (particularly, the mist storage chamber 160) so that it is not easily affected by changes in the surrounding conditions (disturbance). 220 can be wound (attached) (see FIG. 4).

  As a result, moisture, oil, and the like stored in the mist storage chamber 160 of the exhaust mist capturing device 100 for the air dryer device can be made less susceptible to disturbances such as ambient temperature changes. Therefore, it becomes easy to satisfactorily maintain the predetermined temperature (about 60 to 80 ° C.), so that the water can be efficiently evaporated.

  In the present embodiment, the drain cock 180 is provided, but the present invention is not limited to this. For example, instead of the drain cock 180, a drain plug may be provided, or When the mist storage chamber 160 is configured to be detachable from the main body device 100 and the stored liquid substance (remaining substance after moisture evaporation) is discarded, the liquid substance removed and stored from the main body is discarded. It can also be set as such a structure. In addition, it is possible to employ a configuration in which a suction port is provided and the mist storage chamber 160 (the remaining substance after moisture evaporation) is discharged and discarded by a method such as suction using a pump.

  The embodiment described above is merely an example for explaining the present invention, and various modifications can be made without departing from the gist of the present invention.

100 Exhaust mist capture device for air dryer equipment (catch tank device)
120 Inlet Pipe 110 Catch Tank 121 Opening 130 Air / Water Separation Promoting Element 131 Partition 140 Plate-shaped Element 141 Through-hole 150 Air / Water Separation Chamber 160 Mist Chamber (Accommodating Section According to the Present Invention)
180 Drain cock (Drain part)
200 Electric heater (heating device according to the present invention)
210 Thermostat 220 Insulation (insulation mat)

Claims (1)

Air dryer device exhaust for separating and storing mist containing at least moisture from purge air discharged during air dryer device purge processing in an air system that is stored in an air tank and used by storing air compressed by an air compressor in a vehicle A mist capturing device,
A storage unit for storing at least water separated from the purge air as a liquid substance;
A heating device is provided in the housing part,
Wherein the heating device, which in so that only water is evaporated out of the housing portion liquid substance contained in, to control the temperature of the material accommodated in the accommodating portion liquid to about 60-80 ° C An exhaust mist capturing device for an air dryer device.

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