JP2005140056A - Exhaust emission control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an exhaust emission control device, permitting water to be trapped from surroundings and automatically supplied into a water tank 4. <P>SOLUTION: The exhaust emission control device comprises an exhaust pipe 11 communicating with a diesel engine 10, the water tank 4 into which a front end 11a of the exhaust pipe 11 is inserted for storing water, and an exhaust stack 6 installed at the upper part of the water tank 4. A rainwater funnel part 1a and a first distribution pipe 1b and a condensation water funnel part 2a and a second distribution pipe 2b are provided for trapping rainwater and condensation water and supplying them into the water tank 4. The rainwater and the condensation water conventionally disposed are stored in a lump in the water tank 4, thus dispensing with water supply work and permitting the water to be trapped from surroundings and automatically supplied into the water tank 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an exhaust gas purification device that purifies exhaust gas emitted from an internal combustion engine.

  As described in Japanese Patent Application Laid-Open No. H10-28400, there is an exhaust gas purification device that ejects exhaust gas into water stored in a water tank and removes nitrogen oxides, soot and the like contained in the exhaust gas with water, as described in Patent Document 1. is there.

  The water or the liquid catalyst in the water tank provided in the exhaust gas purification device is heated to a high temperature by exchanging heat with the exhaust gas when hot exhaust gas is ejected from the water, so that it gradually evaporates and the amount of water decreases.

Therefore, in order to regularly supply water into the aquarium, a dedicated water supply tank is provided above the aquarium, and a water level sensor is provided in the aquarium, and the water level sensor indicates that the water level in the aquarium is below the specified water level. , The water stored in the dedicated water supply tank flows in a predetermined amount of water into the aquarium and has a characteristic that it always maintains a constant water level.
JP 2001-104735 A

  However, since the exhaust gas purification device described in Patent Document 1 is premised on being installed not only in an air conditioner but also in a vehicle, a water pipe is connected to a dedicated water supply tank for supplying water into the water tank. It is difficult to connect and mainly the user has to supply water manually.

  For this reason, there is the annoyance that the user must pay attention to the amount of water stored in the dedicated water supply tank, and if the water in the dedicated water supply tank runs out without the user's knowledge, the water supply to the tank is There is a possibility that the exhaust gas will not be sufficiently purified due to the stagnation.

  In view of the above points, an object of the present invention is to provide an exhaust gas purification device capable of collecting water from the surroundings and automatically supplying water into a water tank.

  In order to achieve the above object, the present invention employs the following technical means.

  An exhaust gas purification device according to claim 1 is provided in an exhaust pipe that communicates with an internal combustion engine installed in a box, and in the water that stores exhaust gas from the internal combustion engine in communication with the exhaust pipe. An exhaust gas purification apparatus comprising an aquarium to be introduced and an exhaust pipe that is installed in the upper part of the aquarium and discharges exhaust gas generated from the water into the atmosphere, and collects water generated inside or outside the box, It is characterized by having water supply means to supply inside.

  According to the present invention, water generated inside or outside the box is collected and stored in the water tank in a lump, so that the user need not perform water supply work and water can be automatically supplied to the water tank. It becomes possible.

  The water supply means in the exhaust gas purifying apparatus according to claim 2 is characterized by comprising a rainwater funnel portion and a first distribution pipe for feeding rainwater received by the rainwater funnel portion into the water tank.

  According to the present invention, unnecessary rainwater can be automatically supplied into the aquarium, so that it is possible to reduce the user's work of supplying water to the aquarium, and the environment around the place where the internal combustion engine is installed. It becomes possible to suppress contamination.

  The water supply means in the exhaust gas purification device according to claim 3 is arranged above the water tank.

  According to the present invention, it is possible to automatically drop the water collected by the water supply means into a water tank disposed below by gravity, so that the power for storing the water collected by the water supply means in the water tank is increased. It becomes unnecessary, and the water supply means can be configured at low cost.

  The water supply means in the exhaust gas purification device according to claim 4 includes: a rainwater funnel part; a first pumping means for sucking rainwater received by the rainwater funnel part and pumping the rainwater into the water tank; It is characterized by comprising a first distribution pipe that feeds rainwater to the tank.

  According to the present invention, depending on the arrangement of the exhaust gas purification device, when it is difficult to provide a rainwater funnel portion above the water tank, the rainwater collected by the rainwater funnel portion in the horizontal direction or below the water tank Since it can be pumped into the water tank by one pumping means, it is possible to provide a rainwater funnel regardless of the location of the water tank.

  The internal combustion engine that sends exhaust gas to the exhaust gas purification device according to claim 5 is a drive source that drives a compressor that constitutes the air conditioner, and the water supply means supplies the dew condensation water of the heat exchanger that constitutes the air conditioner. It is characterized by comprising a condensed water funnel part to be collected and a second distribution pipe for feeding the condensed water received by the condensed water funnel part into the water tank.

  According to the present invention, unnecessary dew condensation water can be automatically stored in the water tank, so that it is possible to reduce the work of the user supplying water to the water tank and to install the internal combustion engine. It is possible to suppress environmental pollution around the place.

  The water supply means in the exhaust gas purification apparatus according to claim 6 is characterized in that it is disposed below the heat exchanger or the refrigerant pipe.

  According to the present invention, it is possible to easily collect dew condensation water dripping according to gravity from a heat exchanger or a refrigerant pipe.

  The water supply means in the exhaust gas purification device according to claim 7 includes a dew condensation water funnel part, a second pressure feed means for sucking the dew condensation water received by the dew condensation water funnel part and pumping it into the water tank, and a second pressure feed. It is characterized by comprising a second flow pipe for feeding the condensed water pumped by the means into the water tank.

  According to the present invention, depending on the arrangement of the exhaust gas purification device, when it is difficult to provide a condensed water funnel part below the heat exchanger or refrigerant pipe, or the heat exchanger or refrigerant pipe is arranged below the water tank. Even if it is, the condensed water collected by the condensed water funnel can be pumped into the water tank by the second pumping means, so that the condensed water is not related to the position of the heat exchanger or refrigerant piping. A funnel portion can be provided.

  The exhaust gas purifying apparatus according to claim 8 is characterized in that the first circulation pipe is provided with first backflow prevention means for preventing backflow of rainwater.

  According to the present invention, it is possible to prevent the rainwater stored in the water tank from flowing into the rainwater funnel from flowing backward.

  The second flow pipe in the exhaust gas purification device according to claim 9 is provided with a second backflow prevention means for preventing the backflow of the condensed water.

  According to the present invention, it is possible to prevent the condensed water stored from the water tank to the condensed water funnel from flowing backward.

  The exhaust gas purifying apparatus according to claim 10 is characterized in that a filter is provided in the vicinity of the tip of the exhaust pipe inserted in the water tank.

  According to the present invention, it is possible to remove large particulate matter such as soot contained in the exhaust gas emitted from the internal combustion engine before removing it with the water in the aquarium, so the contamination rate of the water stored in the aquarium Can be delayed.

  The filter in the exhaust gas purifying apparatus according to claim 11 is detachable from the water tank.

  According to the present invention, it is possible to periodically replace or clean the filter.

(First embodiment)
Hereinafter, the configuration of an exhaust gas purifying apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

  FIG. 1 is a configuration diagram showing an outline of a configuration when the exhaust gas purifying apparatus according to the present embodiment is applied to a diesel engine type outdoor unit 400 of an air conditioner.

  FIG. 2 is a configuration diagram showing an outline of details of the water tank 4 constituting the exhaust gas purification device.

  In an outdoor unit 400 shown in FIG. 1, a casing 401 formed of resin or metal covers all the constituent elements described later.

  The inside of the housing 401 is divided into a first floor room 100 and a second floor room 200. The housing 401 corresponds to a box shown in the claims.

  In the first floor room 100, a diesel engine 10, a refrigerant pipe 20 that constitutes a part of the refrigeration cycle of the air conditioner, and an exhaust gas purification device are incorporated. A first fan 202a and a second fan 202b for dissipating (cooling) refrigerant heat in a capacitor (not shown) constituting a part are incorporated. In addition, the refrigerant | coolant piping 20 is connected with the evaporator (saving illustration) installed in the to-be-conditioned space.

  The diesel engine 10 is a drive source for driving a compressor constituting a part of the refrigeration cycle of the air conditioner, and the evaporator 20 is a cooling heat exchanger.

  The exhaust gas purifier includes a rainwater funnel portion 1a, a first flow pipe 2a, a first check valve 3a, a dew condensation water funnel portion 1b, a second flow pipe 2b, and a second check valve. 3 b, a water tank 4, a filter 5, an exhaust pipe 6, a drain pipe 7, and an exhaust gas pipe 11.

  The rainwater funnel 1a has a first exhaust port 201a and a second exhaust port 201b provided above the second-floor chamber 200, and discharges the heated air from the first fan 202a and the second fan 202b to the outside. At the same time, it is arranged at the top of the housing 401 to collect rainwater from above.

  Rainwater entering the second floor chamber 200 from the first exhaust port 201a and the second exhaust port 201b is collected in a funnel shape so as to be able to flow into the first distribution pipe 2a, which will be described later. 200 is a partition wall that separates the room 200 from the first floor room 100.

  The rainwater funnel 1a is a plate-like member having a predetermined gradient, and is joined to the upper opening 2a1 of the first flow pipe 2a. In the joint portion, a hole having an inner diameter substantially equal to that of the upper opening 2a1 is formed, and a portion where the hole is formed is formed with the lowest gradient. The edge of the hole and the edge of the upper opening 2a1 are physically joined.

  Then, the rainwater coming into the second floor chamber 200 from the first exhaust port 201a and the second exhaust port 201b is temporarily received throughout the rainwater funnel 1a, and the received rainwater has a hole with the lowest gradient. It is formed so that it can easily flow into the site.

  In this rainwater funnel portion 1a, a predetermined number of grooves (not shown) are formed in a radial pattern centering on the holes joined to the upper opening 2a1 so that the received rainwater can easily flow into the holes. Also good.

  The first distribution pipe 2a is made of a metal made of rust-proofed inner wall surface, which sucks rainwater collected by the rainwater funnel 1a through the upper opening 2a1 and feeds it to the water tank 4 described later. It is a pipe.

  The first check valve 3a is arranged in the vicinity of the connecting portion between the first flow pipe 2a described above and the water tank 4 described later, and even if the water level stored in the water tank 4 rises, This is a known check valve that prevents a reverse flow into the flow pipe 2a and unilaterally feeds rainwater from the first flow pipe 2a to the water tank 4.

  The condensed water funnel portion 1b collects condensed water dripping from the refrigerant pipe 20 disposed above the water tank 4 and flows it into a second distribution pipe 2b described later, which is made of a metal having a rust-proofed surface. It is a funnel composed. The condensed water funnel portion 1b is preferably configured with an inner diameter equal to or longer than the length of the refrigerant pipe 20 in the longitudinal direction.

  Specifically, the dew condensation water funnel portion 1b is a well-known drain that collects dew condensation water dripping from the refrigerant pipe 20 according to gravity. The dew condensation funnel portion 1b is formed at a predetermined angle so that the dew condensation water flows into the second circulation pipe 2b, and the dew condensation water flows into the second circulation pipe 2b by the gradient of the predetermined angle. It is formed to be easy.

  Further, in the present embodiment, the funnel is formed so as to receive dew condensation water from the refrigerant pipe 20, but in order to receive dew condensation water dripping from an evaporator (not shown) arranged in the vicinity of the refrigerant pipe 20, the evaporator You may form in the elongate shape like the well-known rain gutter extended to the downward direction.

  The second circulation pipe 2b is a metal pipe whose inner wall surface is subjected to rust prevention processing, which feeds the condensed water collected by the condensed water funnel portion 2a to a water tank 4 described later.

  The second check valve 3b is arranged at the connecting portion between the above-described second circulation pipe 2b and the water tank 4 described later, and even if the water level in the stored water tank 4 rises, the second circulation valve This is a known check valve that prevents water from flowing back into the pipe 2b and unilaterally feeds dew condensation water from the second flow pipe 2b to the water tank 4.

  Next, in order to explain the configuration of the water tank 4 and various pipes connected to the water tank 4, FIG.

  The water tank 4 communicates with the first and second check valves 3a and 3b, the exhaust gas pipe 11, the exhaust pipe 6 and the drain pipe 7 which will be described later. It is a tank made of a heat-resistant resin or metal that stores water generated inside or outside the body 401 and includes a filter 5 described later.

  The filter 5 is a sponge filter that is disposed substantially vertically in the vicinity of a distal end portion 11a of an exhaust gas pipe 11 to be described later in the water tank 4, and is made of a water-resistant and heat-resistant ester-based or ether-based material. Is a type of filter that collects medium-sized or larger particles such as soot.

  This filter 5 is detachably formed from the water tank 4. Although various forms can be taken regarding the attachment / detachment structure between the water tank 4 and the filter 5, in the present embodiment, the filter 5 is positioned substantially vertically on the side surface of the water tank 4 that contacts the side end of the filter 5. The supporting concave rail 4b is provided substantially vertically.

  As a result, the filter 5 can be fixed substantially vertically in the water tank 4 by engaging with the rail 4b. In the case of new replacement of the filter 5 or cleaning of the filter 5, the filter 5 is attached to the rail 4b. After the user pulls out the engaged filter 5 upward, and after a new replacement or cleaning, the filter 5 is again engaged with the rail, and then dropped down to enable attachment / detachment.

  The exhaust cylinder 6 is a cylinder for releasing the exhaust gas ejected into the water tank 4 into the atmosphere. One end of the exhaust cylinder 6 opens in the upper part of the water tank 4 and the other end is a first fan provided in the second floor chamber 200. It opens in the blowing direction of 202a and the 2nd fan 202b.

  FIG. 2 shows a state in which one end of the exhaust tube 6 is provided on the side surface facing the exhaust gas pipe 11, but the present invention is not limited to this. If it is the upper part of 4, the opening position is not particularly limited.

  The drain pipe 7 is a metal pipe that is provided in the vicinity of the bottom of the water tank 4 described above and flows out the water contaminated with nitrogen oxides and soot from the water tank 4. The drain pipe 7 is provided with a stopper (not shown), and the stopper is optionally opened and closed.

  The installation location of the drain pipe 7 is not particularly limited as long as the water in the water tank 4 can be discharged by gravity, so long as it is near the bottom of the water tank 4.

  The exhaust gas pipe 11 is a metal pipe that allows the diesel engine 10 and the water tank 4 to communicate with each other, and exhaust gas ejected by the diesel engine 10 is jetted into the water in the water tank 4.

  The tip end portion 11 a inserted into the water tank 4 side of the exhaust gas pipe 11 is specifically inserted near the bottom of the water tank 4. The reason is that it is necessary to suppress the possibility that the tip end portion 11a is exposed from the water surface even when the level of water stored in the water tank 4 decreases.

  The distal end portion 11a is closed at the distal end surface, and a plurality of exhaust holes 11b are formed in the side surface. Since this front-end | tip part 11a is inserted in the water in the water tank 4, it is desirable that it is rust-proofed.

(Function and effect)
The exhaust gas purifying apparatus having the above-described configuration makes it possible to feed and store water that has been dripping, such as rain water and dew condensation water, into the water tank 4 in a batch and automatically. Since it is not necessary to perform a so-called maintenance operation called a water level inspection operation and a water supply operation in a typical water tank 4, it is possible to reduce the troublesomeness of the maintenance operation of the user.

  In addition, conventionally, the water generated in the vicinity, such as rain water and dew condensation water, drips around the installation location of the diesel engine 10, and rust and algae are generated in the spill channel, and the environment around the installation location has deteriorated. However, by providing the exhaust gas purifying device of the present embodiment, the generated water is collectively stored in the water tank 4 without dripping down, so that deterioration of the environment around the installation location of the diesel engine 10 is suppressed. Things are also possible.

  Further, the filter 5 purifies the exhaust gas in a two-stage configuration in which particles having a medium size or larger are removed from the exhaust gas by the filter 5 and particles having a small size are collected by the water in the water tank 4. Therefore, it is possible to moderate the contamination rate of water in the water tank 4.

  Further, since the purified exhaust gas is ejected in the blowing direction of the first fan 202a and the second fan 202b, the exhaust gas diffuses into the atmosphere by the blowing from the first fan 202a and the second fan 202b. The speed can be increased.

(Second embodiment)
In the first embodiment described above, the rainwater funnel portion 1a and the dew condensation water funnel portion 1b in the exhaust gas purification device are both disposed above the water tank 4.

  This is possible because the device to which the exhaust gas purifying device is applied is the outdoor unit 400 of the air conditioner. When applied to other devices, such as vehicles, it is not necessarily above the water tank 4. It is not possible to provide the rainwater funnel portion 1a and the dew condensation water funnel portion 1b.

  That is, the rainwater funnel portion 1a or the dew condensation water funnel portion 1b may have to be disposed in the substantially horizontal direction or below the water tank 4.

  However, when the rainwater funnel portion 1a or the dew condensation water funnel portion 1b is disposed substantially in the horizontal direction or below the water tank 4, it is difficult to automatically feed the water tank 4 by gravity.

  Accordingly, when the rainwater funnel portion 1a or the dew condensation water funnel portion 1b must be provided in the substantially horizontal direction of the water tank 4, the pressure feeding means is provided in the middle of the first flow pipe 2a or the second flow pipe 2b. A pump may be provided.

  FIG. 3 shows a schematic diagram when the exhaust gas purifying apparatus of the present invention is applied to a vehicle 402.

  The exhaust gas purification device shown in FIG. 3 is arranged in a shape in which the rainwater funnel portion 1a is deformed on the ceiling portion 402a and the windshield 402b peripheral portion of the diesel engine drive type vehicle 402, and the condensed water funnel portion 1b is Since the evaporator 500 is arranged in a substantially horizontal direction when viewed from the water tank 4, the condensed water funnel portion 1b once receives condensed water, and then the condensed water is pumped to the water tank 4 by the pump 12b. It is possible arrangement.

  Further, the rainwater funnel portion disposed on the ceiling portion 402a is arranged so that the rainwater flowing on the ceiling portion 402a flows in the rear of the dotted line A by dividing the flow direction of the rainwater between the upper portion of the windshield 402b and the front portion of the ceiling portion 402a. The shape of 1a is made a shape in which a gradient is applied downward as it goes to the rear of the vehicle 402.

  In addition, the rainwater funnel portion 1a disposed on the peripheral edge of the windshield 402b has a lower slope as it goes to the front of the vehicle 402 so that rainwater falling on the windshield 402b flows forward than the dotted line A. Use a hanging shape.

  Furthermore, the rain water that falls forward from the dotted line A is discharged from the first circulation pipe 2a disposed in front of the vehicle 402 to the condensed water funnel portion 1b and is pumped together with the condensed water into the water tank 4 by the pump 12a. Configure as follows.

  As a result, the pipes are combined into two pipes, a pipe that feeds water generated in front of the vehicle 402 and a pipe that feeds water generated behind the vehicle 402, thereby saving time and labor when installing the pipe in the vehicle 402. Things are possible.

  With the configuration described above, the rainwater funnel portion 1a or the dew condensation water funnel portion 1b need not necessarily be provided above the water tank 4, so the degree of freedom in installing the rainwater funnel portion 1a or the dew condensation water funnel portion 1b is improved. It is possible to make it.

  Incidentally, the vehicle 402 corresponds to a box shown in the claims.

  In the present embodiment, an example in which the pump 12b is provided only in the second flow pipe 2b has been described. However, a second pump may be provided in the first flow pipe 2a. In this case, the second pump corresponds to the second pumping means shown in the claims.

  In each of the above-described embodiments, rainwater or condensed water is shown as water. However, when the exhaust gas purification device is mounted on a hybrid vehicle, water precipitated from a fuel cell included in the hybrid vehicle is used. Also good.

It is the block diagram which showed the outline of the structure at the time of applying the exhaust-gas purification apparatus which concerns on 1st embodiment of this invention to the outdoor unit 400 of an air conditioner. It is the block diagram which showed the detail of the water tank 4 which comprises the exhaust-gas purification apparatus which concerns on 1st embodiment of this invention. FIG. 4 is a configuration diagram showing an outline of a configuration when an exhaust gas purifying apparatus according to a second embodiment of the present invention is applied to a vehicle 402.

Explanation of symbols

1a Rainwater funnel portion 1b Condensation water funnel portion 2a First flow pipe 2b Second flow pipe 3a First check valve (first backflow prevention means)
3b Second check valve (second backflow prevention means)
4 Water tank 5 Filter 6 Exhaust cylinder 7 Drain pipe 10 Diesel engine 11 Exhaust gas pipe 20 Refrigerant piping 401 Housing (box)

Claims (11)

An exhaust pipe (11) that communicates with the internal combustion engine (10) installed in the box (401), and exhaust gas from the internal combustion engine (10) that communicates with the exhaust pipe (11) is stored therein. A water tank (4) to be introduced into the water;
An exhaust gas purification device provided with an exhaust pipe (6) installed in the upper part of the water tank (4) and releasing the exhaust gas generated from water into the atmosphere,
An exhaust gas purification device comprising water supply means for collecting water supplied inside or outside the box (401) and supplying the water into the water tank (4). The water supply means includes a rainwater funnel portion (1a) for receiving rainwater and a first flow pipe (2a) for feeding the rainwater received by the rainwater funnel portion (1a) into the water tank (4). The exhaust gas purifying device according to claim 1, wherein: The exhaust gas purification device according to claim 1 or 2, wherein the water supply means is disposed above the water tank (4). The water supply means includes the rainwater funnel (1a), the first pumping means for sucking the rainwater received by the rainwater funnel (1a), and pumping the rainwater into the water tank (4), The exhaust gas purification device according to claim 2, comprising the first circulation pipe (2a) for feeding the rainwater pumped by the pumping means into the water tank (4). The internal combustion engine (10) is a drive source for driving a compressor constituting an air conditioner,
The water supply means includes a dew condensation water funnel (1b) that collects dew condensation water from at least one of a heat exchanger and a refrigerant pipe (20) constituting the air conditioner;
The exhaust gas purification according to claim 1, comprising a second flow pipe (2b) for feeding the condensed water received by the condensed water funnel (1b) into the water tank (4). apparatus. The exhaust gas purifying device according to claim 5, wherein the water supply means is disposed below one of the heat exchanger and the refrigerant pipe (20). The water supply means sucks the condensed water received by the condensed water funnel part (1b) and the condensed water funnel part (1b) and pumps the condensed water into the water tank (4),
The exhaust gas purification device according to claim 5, comprising a second flow pipe (2b) for feeding the condensed water pumped by the second pumping means into the water tank (4). The exhaust gas purification device according to claim 2 or 4, wherein the first circulation pipe (2a) is provided with first backflow prevention means (3a) for preventing backflow of the rainwater. The exhaust gas purification device according to claim 5 or 7, wherein the second circulation pipe (2b) is provided with second backflow prevention means (3b) for preventing a backflow of the condensed water. The filter (5) is provided in the water tank (4) near the tip (11a) of the exhaust pipe (11) inserted into the water tank (4). The exhaust gas purification device according to any one of the above. The exhaust gas purification device according to claim 10, wherein the filter (5) is detachable from the water tank (4).

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