CN209557071U - A kind of DPF system of the miniaturization with heat management - Google Patents

Abstract

The utility model is a kind of DPF system of miniaturization with heat management, including mass flowmenter, air regulation device, heating device, control core and DPF main body regenerator section and cooling device, and the air regulation device is laboratory installation or car-mounted device；The DPF cooling device includes cooling water cavity, cooling water tank, water pump, cooler and temperature sensor, and cooling water cavity covers in DPF main body regenerator section, and coolant liquid is filled in cooling water cavity；The filtering body of the DPF main body includes the open channel that partition is equipped among both ends open and the closed channel that both ends are blocked；Open channel is separated into two spaces by the partition, and closed channel has filter chamber, two spaces of the filter chamber across open channel；Multiple closed channels arrange that the wall surface of open channel is filtering surface around open channel along its length centered on open channel.The system is filtered using labyrinth type, is guaranteed that DPF can regenerate in time, is realized the miniaturization of DPF system.

Description

A kind of DPF system of the miniaturization with heat management

Technical field

Small-sized collection and processing unit the utility model relates to the tail gas of the discharge of engine, and in particular to one kind has The DPF system of the miniaturization of heat management.

Background technique

The characteristics of diesel engine has fuel consumption low, and power is strong and high reliablity is widely used in traffic fortune It is defeated, the fields such as engineering machinery and agricultural machinery.But the exhaust gas particulate of diesel engine has environment and human health very big Threat, it is necessary to reduce its discharge amount.From technological layer, only come by measures such as improvement machine combustion process and fuel qualities The discharge amount for reducing diesel particulation has tended to the limit, it is necessary to install after-treatment device additional to diesel engine --- and exhaust gas particulate traps Device, and particulate matter trap is the most effective most promising post-processing technology of the control particulate emissions proposed at present One of.The filtering body with special construction is made by special filtering material, be filtered and the particulate matter of filtering is carried out Processing, to reduce exhaust to the pollution of air and the harm of human health.The China of Patent No. ZL201721037931.4 is specially Benefit proposes a kind of DPF active regeneration system with cyclic annular cooling device.The system has oxygen cylinder, cannot be used in practical work In condition, cyclic annular cooling device controls DPF core body by control centre and works in a suitable temperature, can efficiently locate in time Particulate matter to be managed, DPF is enable to regenerate, the system bulk is larger, some workplaces for requiring small volume cannot be applicable in, Its usable condition is limited.

Utility model content

In view of the deficiencies of the prior art, problem to be solved in the utility model is to provide a kind of with the small of heat management The DPF system of type.The system is filtered using labyrinth type, improves filter efficiency, while also reducing filtering body volume, is arranged Atmidometer becomes larger, but due to the reduction of micropore size, DPF is easier to be blocked by particulate matter, it is therefore desirable to install pump device, In additional DPF regenerator section main body installs device for pressure measurement additional, guarantees lower exhaust resistance, and carry out dpf regeneration control, guarantees DPF energy Regeneration in time, realizes the miniaturization of DPF system.

The utility model solves the technical solution that the technical problem uses:

A kind of DPF system of the miniaturization with heat management, including mass flowmenter, air regulation device, heating device, Control core and DPF main body regenerator section and cooling device, the mass flowmenter is mounted on exhaust duct of diesel engine, in matter It measures and air regulation device and heating device is successively installed on the exhaust duct of diesel engine at flowmeter rear, it is characterized in that be,

The system further includes pump device, and heating device passes through the air inlet for connecing DPF main body regenerator section after pump device again, DPF cooling device is installed outside DPF main body regenerator section；DPF main body regenerator section and cooling device, pump device, air regulation Device, mass flowmenter, heating device are connected with control core, and the operating status of each component is controlled by control core；

The air regulation device is laboratory installation or car-mounted device；

The DPF cooling device uses " water cooling cylinder sleeve type " structure, including cooling water cavity, cooling water tank, water pump, cooler And temperature sensor, the cooling water cavity are wrapped in except DPF main body regenerator section, i.e., cooling water cavity is covered regenerates in DPF main body Duan Shang fills coolant liquid in cooling water cavity, insulating layer is equipped in cooling water cavity outer surface, on the outlet conduit of the cooling water tank Water pump is reconnected, the water inlet of cooling water tank connects cooler；In cooling water tank water inlet mounting temperature sensor；

The filtering body of the DPF main body includes the open channel that partition is equipped among both ends open and the closing that both ends are blocked Channel；Open channel is separated into two spaces by the partition, and closed channel has filter chamber, and filter chamber is across open channel Two spaces；Multiple closed channels are centered on open channel along its length around open channel arrangement, the wall of open channel Face is filtering surface.

Compared with prior art, the utility model has the beneficial effects that

1, Tthe utility model system reduces much compared with existing system volume, and substantial volume reduction is DPF main structure On, it uses labyrinth type and filters, DPF main structure diameter can be obviously reduced, and make DPF master since micropore size is smaller The length of body structure substantially reduces, but the rate of filtration by reduction micropore size, and passes through increasing pump there is no therefore reducing Device of air makes the DPF main body regenerator section still have the higher rate of filtration in the case where reducing volume, and filter efficiency have it is bright It is aobvious to be promoted.

2, Tthe utility model system due to novel DPF by the way of oxygenation and heating intensifying regenerating process, and structure Become smaller, cause DPF thermic load higher, so using the cooling device of " water cooling cylinder sleeve type " structure, and cooling water tank is increased Water pump accelerates heat exchange to improve cooling liquid speed, enhances heat transfer effect.

3, Tthe utility model system can be used on vehicle, onboard in use, replacing air bottle with air pipeline, make entire The volume of system further decreases, and rationally control is empty under the control of control core by air exhauster, check valve and electrically-controlled valve Gas air inflow regenerates dpf regeneration main body under oxygen content higher state.

Detailed description of the invention

Fig. 1 is a kind of structural block diagram of embodiment of the utility model dpf regeneration control system laboratory device version.

Fig. 2 is a kind of structural block diagram of embodiment of the utility model dpf regeneration control system car-mounted device version.

Fig. 3 is the schematic diagram of the regeneration main paragraph of the utility model dpf regeneration device.

In Fig. 1,1, mass flowmenter, 2, heating device, 3, pump device, 4, air regulation device, 5, control core, 6, Data collecting card, 7, DPF main body regenerator section and cooling device, 8, DPF main body regenerator section pressure sensor, 9, DPF main body again Raw section temperature sensor, 401, volume control device, 402, electrically-controlled valve, 403, air bottle, 404, check valve, 405, air exhauster, 406, thermostat, 407 pressure sensors, 701, cooling water cavity, 702, DPF main body regenerator section, 703, water pump, 704, temperature biography Sensor, 705, cooling water tank, 706, cooler

In Fig. 2,406, thermostat, 404, check valve, 405, air exhauster, 407, pressure sensor.

Specific embodiment

It is further discussed below the utility model below in conjunction with examples and drawings, but is not protected in this, as to the application The restriction of range.

The DPF system of miniaturization of the utility model with heat management includes mass flowmenter 1, air regulation device 4, adds Thermal 2, control core 5, pump device 3 and DPF main body regenerator section and cooling device 7, the mass flowmenter 1 are mounted on On exhaust duct of diesel engine, air regulation device 4 is successively installed on the exhaust duct of diesel engine at mass flowmenter rear and is added Thermal 2, heating device connects the air inlet of DPF main body regenerator section 702 after passing through pump device again, outside DPF main body regenerator section DPF cooling device is installed；DPF main body regenerator section and cooling device 7, pump device 3, air regulation device 4, mass flowmenter 1, heating device 2, water pump 703 are connected with control core 5, and the operating status of each component is controlled by control core 5；

The air regulation device can be respectively set to laboratory installation (Fig. 1) and car-mounted device (Fig. 2) two kinds of forms, Use when middle laboratory installation is tested when can be used for testing, but since there are air bottles to cause volume larger, so It is changed to car-mounted device in actual use.

Laboratory installation includes volume control device 401, electrically-controlled valve 402, air bottle 403, check valve 404, air exhauster 405, thermostat 406, pressure sensor 407, the air bottle are equipped with air, pressure can be detected by pressure sensor, then directly It connects and is supplemented from air by air exhauster 405, install thermostat 406 additional outside air bottle, controlled in air bottle by thermostat 406 Temperature, and the aperture of air bottle is controlled by check valve 404, the outlet of volume control device 401 connects electrically-controlled valve 402, flow control The import of device 401 processed is connect with diesel exhaust gases mouthful, so that dpf regeneration main paragraph be made to reach the carded sliver again under suitable conditions Part.Thermostat is mounted on outside air bottle.The setting of laboratory installation can simulate practical vehicle behavior, In in laboratory conditions Inlet air conditions under physical condition, so that experimental data can be obtained by laboratory installation, to obtain the data of car-mounted device, Such as wind pressure size, temperature etc. data, and then guarantee to actually use the system on automobile.

Car-mounted device include volume control device 401, electrically-controlled valve 402, thermostat 406, check valve 404, air exhauster 405 with And pressure sensor 407, the pressure sensor 407 is for detecting pressure, pressure sensor 407, air exhauster 405 and unidirectional Valve 404 is connect with control core, and air exhauster 405 and check valve 404 can guarantee air inflow by control core 5, in air hose Thermostat 406 is installed, thermostat is mounted on air pipeline, controls the temperature in air pipeline upper end by thermostat 406 at road Degree installs electrically-controlled valve 402 after thermostat pipeline, volume control device 401 is connected after electrically-controlled valve, after volume control device Diesel exhaust gases mouthful is connected, so that dpf regeneration main paragraph be made to regenerate under conditions of oxygen content increases.Car-mounted device directly will be permanent Warm device is mounted on pipeline external, eliminates air bottle, can effectively reduce volume.

The DPF cooling device replaces ring type cooling device using " water cooling cylinder sleeve type " structure, and has installed water pump additional to add Quickly cooling but water flow velocity enhances heat transfer effect, including cooling water cavity 701, cooling water tank 705, water pump 703, cooler 706 and temperature Sensor 704 is spent, the cooling water cavity 701 is wrapped in except DPF main body regenerator section 702, i.e., cooling water cavity is covered in DPF main body In regenerator section 702, coolant liquid is filled in cooling water cavity, is equipped with insulating layer in cooling water cavity outer surface, the cooling water tank goes out Water pump 703 is connected on waterpipe, coolant liquid is extracted out from cooling water tank 705, and coolant liquid is made to complete circulation, cooling water with high speed The water inlet of case 705 connects cooler 706, and high temperature coolant is cooled down, and completes cooling cycle.In 705 water inlet of cooling water tank Mounting temperature sensor 704 to detect coolant temperature, and transfers data to control core 5, when temperature is more than limit value It begins to cool, is damaged with preventing DPF from regenerating in the case of a high temperature.

DPF main body regenerator section pressure sensor 8 and DPF master are fitted in the air inlet of DPF main body regenerator section and outlet Body regenerator section temperature sensor 9；

The filtering body of the DPF main body uses " labyrinth type " structure, and the opening including being equipped with partition among both ends open is logical The closed channel that road and both ends are blocked；Open channel is separated into two spaces by the partition, and closed channel has filter chamber, mistake Two spaces of the filter chamber across open channel；Open channel is rectangle, and rectangular four sides connect along its length respectively Connect a closed channel；In the top view of filtering body, closed channel and open channel interval are arranged；Four sides of open channel Face is filtering surface.Closed channel both sides are blocked, and partition is arranged in centre in open channel, and between open channel and closed channel Every setting, after this structure forces exhaust to be entered by open channel, it is logical that closing is entered by porous ceramic wall surface (filtering surface) The filter chamber in road, but since closed channel both sides are blocked, so can be again via porous ceramic wall surface to open channel The partition other side, and to can complete to filter twice by an open channel and a closed channel (referring to Fig. 3, arrow in Fig. 3 Simulated exhaust flow direction).When filtering body length is longer, successively it can accordingly be connected by multiple open channels and closed channel along axial direction It connects, completes to be filtered for multiple times.

The micropore size of preferred filtering surface is 6~10 μm in the utility model.

Above-mentioned DPF main body regenerator section pressure sensor 8, DPF main body regenerator section temperature sensor 9, pressure sensor, temperature Sensor, heating device, electrically-controlled valve, cooler, water pump are connect with control core, and the fortune of each component is controlled by control core Row state.

It, can be to the wall of the filtering surface of open channel in the utility model for particle trapper bulky problem at present Face thickness is adjusted, and then reduces sedimentary, reduces back pressure；Increased simultaneously by the cooperation of open channel and closed channel Filter number.It installs air regulation device additional after mass flowmenter, and heating device, heating device is installed after air regulation device It can be used existing heating method (such as electric heating), connect pump device after heating device, and connect after pump device small Type DPF main body regenerator section air inlet, and shell-like cooling structure is installed in DPF main body regenerator section.

The utility model by select be filtered for multiple times, the smaller filtering body in aperture, can effectively reduce the body of DPF main body Product, while pump device is set between heating device and the air inlet of DPF main body regenerator section 702, it can effectively improve wind pressure, energy It prevents from blocking aperture because particulate matter is accumulated, reducing filter efficiency, and then the case where increase oil consumption occurs, and can guarantee exhaust Big flow, overcome the problems, such as that exhaust resistance is big when small-bore, can be in the Chinese patent of Patent No. ZL201721037931.4 On the basis of be substantially reduced system bulk, cooperation the application is socketed the cooling device of form, may further ensure that cooling effect.Such as Fruit exhaust resistance is excessive, and a large amount of particulate matter accumulations will increase engine consumption.

The small size DPF main structure causes filter area to reduce, so increasing filtering time since volume reduces Number reduces filtering body micropore, will lead to exhaust resistance and become larger, so needing to increase stream by increasing armored pump device of air Amount.DPF is easier to be blocked by particulate matter after becoming smaller due to volume, increases pump device and heating device, makes particle as far as possible Object is handled in time, not accumulated, its power of regeneration is enhanced, to maintain filtering body efficiency.

Air regulation device is used in vehicle by Tthe utility model system, using the air pipeline of vehicle as air-source, is reduced The use of air bottle, can further reduce system bulk, and be realized pair by the cooperation of check valve, air exhauster and electrically-controlled valve The reasonable control of air inlet amount, enables dpf regeneration main body to be regenerated under oxygen content higher state.

Air bottle described in the utility model, air exhauster, pump device, cooler, thermostat, heating device can pass through It is commercially available, but need to choose suitable dimension and suitable power, it can also oneself design.The thermostat can pass through heating Or it is cooling, so that the air in air bottle is in a suitable temperature.Pump device can also make under the control of control core The flow velocity of DPF control core maintains the highest state of filter efficiency.

The course of work of the utility model dpf regeneration control system is:

Enter the delivery temperature of DPF main body regenerator section, temperature positioned at the temperature sensor detection of DPF main body regenerator section entrance Spend sensor and the data being collected into be transmitted to control centre by data collecting card, by control centre to diesel engine condition into Row analysis, analyses whether to need to carry out heating oxygenation, if it is desired, opens air by the aperture that control core controls electrically-controlled valve Bottle carries out oxygenation to exhaust, opens heating device and is heated.Whether the temperature sensor detection temperature on cooling water pipe simultaneously More than limit value, DPF main body regenerator section is cooled down if it does, opening water pump, positioned at DPF main body regenerator section exit Temperature sensor detects the size of final delivery temperature, and whether detection DPF cooling device cooling effect has reached expection, if do not had Have and reach, then enables water pump and increase flow velocity, enhance refrigeration effect.DPF main body regenerator section inlet and outlet are detected by pressure sensor Pressure passes data to control centre, analyzes regenerated state, and the oxygen feeding stop if completing stops heat supply, stops pump Gas.

It analyzes diesel engine condition and enters the temperature of DPF main body regenerator section, if necessary to heat oxygenation, control core control Electrically-controlled valve processed and heating device carry out heating oxygenation to exhaust.Pass through air tune before tail gas reaches DPF main body regenerator section Control device is added air to it and can accurately control oxygen concentration under the work of flow measurement device, make it in dpf regeneration When reach higher oxygen content, the regeneration of DPF can be accelerated in this way.But due to carrying out regenerative combustion under oxygen content higher state, The temperature of DPF can be quicklyd increase with the rising of oxygen concentration, install cooling device additional in the periphery of DPF main body regenerator section, can be with Guarantee that the operating temperature of DPF damages temperature lower than it, while being acquired in real time by the temperature sensor in DPF main body regenerator section Temperature inside DPF main body regenerator section, it is ensured that DPF work works in suitable temperature and under high working efficiency.In The regeneration requirements that DPF may be not achieved in delivery temperature when underload or cold start-up generate a large amount of particulate matters, since this is practical new Type reduces filtration volume, has increased and decreased filtering times, and smaller micropore is selected to cause particulate matter may blocking microporous, this Shen It please installs heating device additional before entering DPF main body regenerator section and has installed powerful pump device additional, exhaust can be improved Speed and improve temperature, can accelerate and improve the power of regeneration of DPF, guarantee its it is regenerated in underload and cold start-up can By property.

The utility model can be obtained by laboratory installation relevant experimental data, for different car bodies, according to The filter structure of DPF main body selects corresponding filtering times, micropore size in the application, since the rate of filtration is still to remain existing State cannot reduce, and the size that every kind of vehicle specifically reduces need to be obtained in laboratory installation by experiment, and then be able to achieve vehicle The effective use set is carried, the application's focuses on proposing a kind of feasible DPF main structure for reducing volume.

While there has been shown and described that the embodiment of the present apparatus for the ordinary skill in the art can be with A variety of variations can be carried out to these embodiments in the case where not departing from the principle and spirit of Tthe utility model system, repair by understanding Change, replacement and variant, the range of Tthe utility model system is defined by the appended claims and the equivalents thereof.

The utility model does not address place and is suitable for the prior art.

Claims (5)

1. a kind of DPF system of the miniaturization with heat management, including mass flowmenter, air regulation device, heating device, control Core processed and DPF main body regenerator section and cooling device, the mass flowmenter is mounted on exhaust duct of diesel engine, in quality Air regulation device and heating device are successively installed on the exhaust duct of diesel engine at flowmeter rear, it is characterized in that be,

The system further includes pump device, and heating device passes through the air inlet for connecing DPF main body regenerator section after pump device again, In DPF cooling device is installed outside DPF main body regenerator section；

The air regulation device is laboratory installation or car-mounted device；

The DPF cooling device uses " water cooling cylinder sleeve type " structure, including cooling water cavity, cooling water tank, water pump, cooler and Temperature sensor, the cooling water cavity cover in DPF main body regenerator section, and coolant liquid is filled in cooling water cavity；

The filtering body of the DPF main body includes that the open channel that partition is equipped among both ends open and the closing that both ends are blocked are logical Road；Open channel is separated into two spaces by the partition, and closed channel has a filter chamber, filter chamber across open channel two A space；Multiple closed channels are centered on open channel along its length around open channel arrangement, the wall surface of open channel It is filtering surface.

2. the DPF system of the miniaturization according to claim 1 with heat management, which is characterized in that the open channel For rectangle, rectangular four sides connect a closed channel along its length respectively, between closed channel and open channel Every setting.

3. the DPF system of the miniaturization according to claim 1 with heat management, which is characterized in that the laboratory dress It sets including volume control device, electrically-controlled valve, air bottle, check valve, air exhauster, thermostat, pressure sensor, the air is bottled There is air, install thermostat additional outside air bottle, the temperature in air bottle is controlled by thermostat, and the aperture of air bottle is by unidirectional The outlet of valve control, volume control device connects electrically-controlled valve, and the import of volume control device is connect with diesel exhaust gases mouthful；Constant temperature Device is mounted on outside air bottle.

4. the DPF system of the miniaturization according to claim 1 with heat management, which is characterized in that car-mounted device includes Volume control device, electrically-controlled valve, thermostat, check valve, air exhauster and pressure sensor, the pressure sensor is for detecting Pressure, pressure sensor, air exhauster and check valve are connect with control core, and thermostat is mounted on air pipeline, in perseverance Electrically-controlled valve is installed after warm device pipeline, volume control device is connected after electrically-controlled valve, diesel engine row is connected after volume control device Port.

5. the DPF system of the miniaturization according to claim 1 with heat management, which is characterized in that the micropore of filtering surface Aperture is 6~10 μm.