WO2022262025A1 - Automatic cleaning equipment for diesel particulate filter - Google Patents

Abstract

Automatic cleaning equipment for a diesel particulate filter, used for heating and cleaning the diesel particulate filter, comprising: a diesel particulate filter cleaning device (3) used for cleaning the diesel particulate filter; and a control device (4) used for controlling the operation of the diesel particulate filter cleaning device (3), wherein the diesel particulate filter cleaning device (3) comprises at least a treatment temperature sensor (40) used for sensing the temperature of air flow entering a cleaning chamber (10) as a treatment temperature, and the control device (4) controls an air inlet valve (38), a heating unit (8) and an air flow driving unit (6) on the basis of the treatment temperature and a predetermined heating treatment curve, so that the treatment temperature conforms to a predetermined heat treatment curve. The device can quickly complete cleaning, has a good cleaning effect, and does not cause damage to the diesel particulate filter.

Description

Automatic cleaning equipment for particle filter technical field

The invention belongs to the technical field of particle filter cleaning, and in particular relates to automatic cleaning equipment for particle filters.

Background technique

The exhaust system of a diesel vehicle includes an exhaust pipe and a particulate filter (Diesel Particulate Filter, DPF for short) arranged in the exhaust pipe. When the exhaust gas in the exhaust pipe passes through the DPF, the particulate matter and oil in the exhaust gas are absorbed by the filter element of the DPF. Adsorption filtration. However, as the working time of the exhaust system of diesel vehicles increases, the particulate matter and oil pollution inside the DPF filter element also accumulates, resulting in an increase in the exhaust back pressure of the vehicle, an increase in the fuel consumption of the vehicle and a decrease in power. In addition, when the DPF filter element is severely clogged, the exhaust gas cannot be discharged.

The conventional solution to the above problems is to regularly remove the DPF from the exhaust system of a diesel vehicle and clean it (clean up) to restore it to its normal working level.

The existing DPF cleaning method is mainly based on heating and regenerative cleaning, that is, the particles and oil stains accumulated on the DPF are burned to achieve cleaning through different heating methods. However, the existing heating regeneration has more or less disadvantages, for example: the fuel injection heating regeneration cleaning method requires additional fuel and high cost; the ordinary electric heating regeneration cleaning method will cause uneven heating, which will lead to DPF The cleaning effect is poor, and causes local overheating and damage of the DPF; the microwave heating regenerative cleaning method needs to overcome the technical difficulty of how to excite as many modes as possible in the resonant cavity to achieve heating; the infrared heating device involved in the infrared heating regenerative cleaning method costs high.

To sum up, the existing heating regeneration cleaning method is easy to damage the DPF, the cost of related equipment is high, and the related technology is immature, so it cannot clean the DPF efficiently and non-destructively at low cost, and the cleaning effect is poor.

Contents of the invention

In order to solve the above problems, a kind of particle filter automatic cleaning equipment is provided, and the present invention adopts the following technical solutions:

The present invention provides an automatic particle filter cleaning device, which is used for heating and cleaning the particle filter, and is characterized in that it comprises: a particle filter cleaning device, used for cleaning the particle filter; and a control device, used for The operation of the particle filter cleaning device is controlled, wherein the particle filter cleaning device includes: a cleaning chamber for placing the particle filter; a heating unit for heating the air flow; an air flow drive unit for An air flow provides a driving force for the flow; an air intake unit for admitting external air into the cleaning chamber having an intake valve for controlling the intake of external air; and a process temperature sensor for sensing entry into the cleaning chamber The temperature of the air flow in the chamber is used as the treatment temperature, and the control device controls the intake valve, the heating unit and the air flow driving unit based on the treatment temperature and the predetermined heat treatment curve, so that the treatment temperature conforms to the predetermined heat treatment curve.

The particle filter automatic cleaning equipment provided by the present invention may also have such technical features, wherein the particle filter cleaning device further includes an air flow input unit, which is used to input the high-temperature air flow formed by heating the heating unit into the cleaning chamber , the processing temperature sensor is arranged in the boundary area between the air flow input unit and the cleaning chamber, the control device has a timing unit, a current target temperature acquisition unit, a temperature comparison unit and a control unit, and the control unit starts to clean the particulate filter , control the timing unit to start timing so as to obtain the current processing time in real time, the current target temperature acquisition unit acquires the temperature corresponding to the current processing time on the predetermined heating treatment curve according to the current processing time as the current target temperature, and the control unit obtains the temperature corresponding to the current processing time from the processing temperature sensor in real time Obtain the processing temperature as the current processing temperature respectively, and control the temperature comparison unit to compare the current processing temperature and the current target temperature to obtain a comparison result, and the control unit compares at least one of the intake valve, the heating unit and the air flow driving unit according to the comparison result The working state of one is controlled so that the actual heat treatment curve formed by each current treatment temperature conforms to the predetermined heat treatment curve.

The particulate filter automatic cleaning equipment provided by the present invention may also have such technical features, wherein the control unit has an intake valve control unit, and when the comparison result shows that the current processing temperature is higher than the current target temperature, the intake valve control unit controls Increase the opening degree of the intake valve, thereby reducing the current processing temperature, and when the comparison result shows that the current processing temperature is lower than the current target temperature, the intake valve control unit controls the intake valve to reduce the opening degree, thereby increasing the current processing temperature .

The particle filter automatic cleaning equipment provided by the present invention can also have such technical features, wherein the control unit has a heating control part, and when the comparison result shows that the current processing temperature is higher than the current target temperature, the heating control part controls the heating unit to reduce the power , so that the current processing temperature decreases. When the comparison result shows that the current processing temperature is lower than the current target temperature, the heating control part controls the heating unit to increase the power, thereby increasing the current processing temperature.

The particle filter automatic cleaning equipment provided by the present invention may also have such technical features, wherein the control unit has a drive control part, and when the comparison result shows that the current processing temperature is higher than the current target temperature, the drive control part controls the air flow drive unit Increase the driving force so that the current processing temperature decreases, and when the comparison result shows that the current processing temperature is lower than the current target temperature, the drive control part controls the air flow driving unit to weaken the driving force, thereby increasing the current processing temperature.

The particle filter automatic cleaning equipment provided by the present invention can also have such technical features, wherein the particle filter cleaning device also includes an air flow output unit for outputting the high-temperature air flow in the cleaning chamber and an airflow output unit arranged in the cleaning chamber The auxiliary temperature sensor on the indoor or air flow output unit, the control device also has a temperature difference judgment unit, the control unit has a drive control part, the control unit obtains the temperature sensed by the auxiliary temperature sensor in real time as the current auxiliary temperature, and controls the temperature The difference judging unit judges whether the difference between the current processing temperature and the current auxiliary temperature is smaller than a predetermined temperature difference threshold, and the drive control part controls the air flow driving unit to weaken the driving force when the temperature difference judging unit judges no.

The particle filter automatic cleaning equipment provided by the present invention can also have such technical features, wherein the particle filter cleaning device also includes an air flow output unit for outputting the high-temperature air flow in the cleaning chamber, and is arranged in the cleaning chamber The first auxiliary temperature sensor in the room and the second auxiliary temperature sensor installed on the air flow output unit, the control device also has an auxiliary temperature average calculation unit and a temperature difference judgment unit, the control unit has a drive control part, and the control unit real-time Acquiring the temperature sensed by the first auxiliary temperature sensor as the first current auxiliary temperature, obtaining the temperature sensed by the second auxiliary temperature sensor as the second current auxiliary temperature, and controlling the auxiliary temperature average calculation unit to calculate the first current auxiliary temperature The mean value of the second current auxiliary temperature is used as the average auxiliary temperature, the control unit controls the temperature difference judgment unit to judge whether the difference between the current processing temperature and the average auxiliary temperature is less than a predetermined temperature difference threshold, and the drive control part is in the temperature difference judgment unit When the judgment is negative, the airflow driving unit is controlled to weaken the driving force.

The particle filter automatic cleaning equipment provided by the present invention can also have such technical features, wherein the control device also has a judgment unit for the end of the high temperature maintenance stage and a judgment unit for the end of the first cooling stage, and the control unit includes an intake valve control unit, an exhaust The air valve control part, the backflow valve control part, the heating control part and the drive control part, the particle filter cleaning device also includes: an exhaust unit for discharging the high-temperature air flow, having a device for controlling the discharge of the high-temperature air flow The exhaust valve, the air flow return unit, returns the high-temperature air flow from the air flow output unit to circulate the high-temperature air flow, and has a return valve for controlling the return flow of the high-temperature air flow. The predetermined heating treatment curve includes at least In the high temperature maintenance stage, the first cooling stage and the second cooling stage, the high temperature air flow is maintained at a temperature of 550°C to 700°C during the high temperature maintenance stage, and the duration of the high temperature maintenance stage is 5min-30min, and the judging unit judges the end of the high temperature maintenance stage Whether the current processing time has reached the end time of the high temperature maintenance stage, when the high temperature maintenance stage ends judging unit judges yes, the heating control part controls the heating unit to stop processing, the intake valve control part controls the intake valve to increase the opening degree, and the first cooling The stage end judging unit judges whether the current processing time has reached the end time of the first cooling stage, and when the judgment of the first cooling stage ending judging unit is yes, the intake valve control part controls the intake valve to fully open, and the exhaust valve control part controls The exhaust valve is opened, and at the same time, the return valve control part controls the return valve to close.

The particle filter automatic cleaning equipment provided by the present invention can also have such technical features, wherein the control device also has a curve storage unit, a model input unit and a heating curve determination unit, and the curve storage unit stores models of different particle filters and The heating treatment curve corresponding to the model, the model input unit is used to allow the operator to input the model of the particulate filter to be cleaned, and the heating curve determination unit determines the corresponding heating treatment curve from the curve storage unit according to the input model as the scheduled heating Process curves.

The particle filter automatic cleaning equipment provided by the present invention may also have such technical features, wherein the control device further includes a display unit and a picture storage unit, and the picture storage unit stores a temperature display picture. When the heating curve determination unit determines that the predetermined heating treatment curve, the control unit controls the display unit to display the temperature display screen and the predetermined heat treatment curve, and displays the current treatment temperature in real time.

The particulate filter cleaning system in the present invention can clean particulate filters, such as diesel particulate filter (Diesel Particulate Filter, DPF for short), gasoline particulate filter (Gasoline Particulate Filter, GPF for short), etc. In addition, the particle filter cleaning system can also clean other parts in the exhaust system of fuel vehicles that need to regularly clean particles, such as the oxidation catalytic converter (Diesel Oxidation Catalyst, referred to as DOC), exhaust gas recirculation system (Exhaust Gas Recirculation system) -circulation, referred to as EGR), selective catalytic reduction system (Selective Catalytic Reduction, referred to as SCR) and other parts involved in cleaning; and, only need to place these parts to be cleaned in the cleaning chamber of the equipment , to ensure that the high-temperature air flow can pass through the interior of these parts, and cleaning can be realized. In addition, when cleaning parts other than the particle filter, in order to achieve a better cleaning effect, you can also choose to replace the supporting part in the particle filter cleaning system suitable for cleaning the particle filter with one that is suitable for the parts matching supporting parts.

Invention function and effect

According to a kind of particle filter automatic cleaning equipment of the present invention, since the processing temperature sensor can sense the temperature of the air flow entering the cleaning chamber as the processing temperature, and then the control device controls the intake valve, The heating unit and the air flow driving unit are controlled so that the treatment temperature conforms to the predetermined heating treatment curve. Therefore, the treatment temperature can be made to conform to the theoretical heating treatment curve, so as to ensure that the particulate filter can be heated and cleaned accurately according to the predetermined heating treatment curve, thereby enabling The cleaning is completed quickly, and the heating is uniform, and the particle filter can be cleaned without damage, and has a good cleaning effect.

Description of drawings

Fig. 1 is a structural block diagram of a particle filter automatic cleaning device according to Embodiment 1 of the present invention;

2 is a schematic structural view of a particle filter cleaning device according to Embodiment 1 of the present invention;

3 is a schematic diagram of a predetermined heat treatment curve in Embodiment 1 of the present invention;

Fig. 4 is a comparison diagram between the predetermined heat treatment curve and the actual heat treatment curve in Example 1 of the present invention;

Fig. 5 is a flow chart of the working process of the particle filter automatic cleaning device according to Embodiment 1 of the present invention;

Fig. 6 is a functional block diagram of the particle filter automatic cleaning device and control device in the second embodiment of the present invention;

Fig. 7 is a flow chart of the cleaning steps of the particle filter in the second embodiment of the present invention;

Fig. 8 is a functional block diagram of the particle filter automatic cleaning device and control device in Embodiment 3 of the present invention;

Fig. 9 is a flow chart of the cleaning steps of the particle filter in the third embodiment of the present invention;

Fig. 10 is a functional block diagram of the particle filter automatic cleaning device and control device in Embodiment 4 of the present invention;

Fig. 11 is a flow chart of cleaning steps of the particle filter in Embodiment 4 of the present invention;

Fig. 12 is a functional block diagram of the particle filter automatic cleaning device and control device in Embodiment 5 of the present invention;

Fig. 13 is a flowchart of the cleaning steps of the particle filter in Embodiment 5 of the present invention; and

Fig. 14 is a schematic diagram of a theoretical heat treatment curve in a modified example of the present invention.

detailed description

In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the following describes a particle filter automatic cleaning device of the present invention in detail with reference to the embodiments and accompanying drawings.

<Example 1>

Fig. 1 is a structural block diagram of an automatic cleaning device for a particle filter according to Embodiment 1 of the present invention.

As shown in FIG. 1 , the automatic particulate filter cleaning device of the present invention includes a particulate filter cleaning device 3 and a control device 4 .

The particle filter cleaning device 3 is used to clean the particle filter.

The control device 4 is electrically connected with the particle filter cleaning device 3 and can control the operation of the particle filter cleaning device 3 .

Fig. 2 is a schematic structural view of a particle filter cleaning device according to Embodiment 1 of the present invention.

As shown in FIG. 2 , the particle filter cleaning device 3 includes an air flow drive unit 6 , an air flow return unit 7 , a heating unit 8 , an air flow input unit 9 , a cleaning chamber 10 , an air flow output unit 11 , and an air intake unit 32 , exhaust unit 33 , process temperature sensor 40 , first auxiliary temperature sensor 41 and second auxiliary temperature sensor 42 .

The air flow driving unit 6 has a driving motor 12 , a blower 13 , a driving pipe 14 , an air inlet 15 and an air outlet 16 , and can provide driving force for the air flow. Wherein, the driving motor 12 is installed on the top of the cabinet, and the blower 13 is connected to the output end of the driving motor 12. The blower 13 can suck air from the air inlet 15 under the driving of the driving motor 12, and discharge from the air outlet 16 after generating an air flow.

The air flow recirculation unit 7 is a conveying pipeline, which recirculates the high temperature air flow from the air flow output unit 11 to circulate the high temperature air flow, and has a return valve 37 for controlling the reflow of the high temperature air flow.

The heating unit 8 communicates with the air flow return unit 7 and can heat the air flow delivered by the air flow return unit 7 to form a high temperature air flow.

The air flow input unit 9 is a pipe, communicated with the heating unit 8 , and inputs the high-temperature air flow formed by heating the heating unit 8 into the cleaning chamber 10 .

The cleaning chamber 10 is a cuboid box, including a heat-insulating cavity and a heat-insulating door installed on the heat-insulating cavity. Through hole 31 .

The cleaning chamber 10 is located above the heating unit 8 and communicates with the air flow input unit 9 . The particle filter is placed in the cleaning chamber 10, and the high-temperature air flow generated by the heating unit 8 enters the cleaning chamber 10 through the air flow input unit 9 to clean the particles deposited in the particle filter.

The air flow output unit 11 is a pipeline, which is respectively connected with the cleaning chamber 10 and the air flow driving unit 6 , and can deliver the high temperature air flow in the cleaning chamber 10 to the air flow driving unit 6 .

The air intake unit 32 is a pipeline capable of introducing external air into the cleaning chamber 10 and has an air intake valve 38 for controlling the intake of external air.

The exhaust unit 33 is a pipe, communicated with the air flow drive unit 6, capable of discharging the high temperature air flow, and has an exhaust valve 39 for controlling the discharge of the high temperature air flow.

In the first embodiment, the intake valve 38 , the exhaust valve 39 and the return valve 37 are all electrically controlled valves.

The processing temperature sensor 40 is a temperature sensor, which is arranged in the boundary area between the airflow input unit 9 and the cleaning chamber 10, and can sense the temperature of the high-temperature airflow entering the cleaning chamber 10 as the processing temperature.

The first auxiliary temperature sensor 41 is a temperature sensor, which is arranged in the cleaning chamber 10 and close to the air flow output unit 11 , and can sense the temperature of the air flow passing through the particulate filter as the first auxiliary temperature.

The second auxiliary temperature sensor 42 is a temperature sensor, which is arranged on the air flow output unit 11 and can sense the temperature of the air flow after passing through the particulate filter as the second auxiliary temperature.

The control device 4 has a control unit 74, a picture storage unit 60, a curve storage unit 61, a model input unit 62, a heating curve determination unit 63, a timing unit 64, a current target temperature acquisition unit 65, a display unit 66, and a heating stage end judgment unit 67 , high temperature maintenance stage end judging unit 68, temperature comparison unit 69, first cooling stage ending judging unit 70, second cooling stage ending judging unit 72, auxiliary temperature average calculation unit 73 and temperature difference judging unit 74.

Among them, the control unit 74 has an intake valve control unit 743 , a return valve control unit 741 , an exhaust valve control unit 744 , a heating control unit, and a drive control unit.

The screen storage unit 60 stores a temperature display screen.

The curve storage unit 61 stores different models of particulate filters and heat treatment curves corresponding to the models.

Next, taking the automatic cleaning process of the particle filter automatic cleaning equipment as an example, the functions of the above-mentioned units and parts will be described in detail.

Before automatic cleaning of the particle filter automatic cleaning device, the operator places the particle filter to be cleaned in the cleaning chamber 10 and inputs the model of the particle filter to be cleaned through the model input unit 62 .

In the first embodiment, the model input unit 62 is a liquid crystal display, which is set on the particle filter cleaning device 3, and the operator selects the model of the particle filter to be cleaned on the liquid crystal display.

The heating curve determining unit 63 determines a corresponding heating treatment curve from the curve storage unit 61 according to the model input by the operator as a predetermined heating treatment curve.

When the heating curve determination unit 63 determines the predetermined heating treatment curve, the control unit 74 controls the display unit 66 to display the temperature display screen and the predetermined heating treatment curve.

Fig. 3 is a schematic diagram of a predetermined heat treatment curve according to Embodiment 1 of the present invention.

As shown in FIG. 3 , the predetermined heat treatment curve includes a temperature rising stage, a high temperature maintaining stage, a first temperature falling stage and a second temperature falling stage.

Wherein, the heating stage further includes a first heating sub-stage, a stable sub-stage and a second heating sub-stage.

The initial temperature in the first heating sub-stage is T ₀ , after heating for the preheating time t ₁ , the temperature is raised to the preheating temperature T ₁ , thus entering the steady substage; in the steady substage, the temperature is kept at the preheating temperature T ₁ , until the steady time t ₂ passes, enter the second heating sub-stage; in the second heating sub-stage, after the heating time t ₃ , the temperature rises from the preheating temperature T ₁ to the cleaning temperature T ₂ , and then enters the high temperature maintenance stage.

Wherein, the sum of the preheating time t ₁ , the steady time t ₂ and the heating time t ₃ is the first predetermined time, the first predetermined time is 10min-20min, the preheating time t ₁ is 1min-5min, and the steady time _t2 is 3min -8min, the initial temperature T ₀ is 25°C to 100°C, the preheating temperature T ₁ is 250°C to 350°C, and the cleaning temperature T ₂ is 550°C to 700°C.

In this embodiment one, the preheating time _t1 is 3min, the steady time _t2 is 5min, the heating time _t3 is _7min , the initial temperature _T0 is room temperature, the preheating temperature T1 is 300°C, and the cleaning temperature _T2 is 600°C.

In the high temperature maintenance stage, the temperature is kept at the cleaning temperature T2 ₍ i.e. the temperature at which the high temperature air flow is maintained during the high temperature maintenance stage), and after the cleaning time t4 ₍ i.e. the duration of the high temperature maintenance stage), enters the first temperature drop stage.

Wherein, the cleaning time t4 is 10min _- 20min.

In the first embodiment, the cleaning time t4 is ₁₅ minutes.

In the first cooling stage, after the pre-cooling time t ₅ , the temperature drops from the cleaning temperature T ₂ to the pre-cooling temperature T ₃ , and then enters the second cooling stage.

Among them, the pre-cooling time t ₅ is 3min-7min, and the pre-cooling temperature T ₃ is 450°C-500°C.

In the first embodiment, the pre-cooling time t ₅ is 5 minutes, and the pre-cooling temperature T ₃ is 480°C.

In the second cooling phase, the temperature drops from the precooling temperature T ₃ to the removal temperature T ₄ over a cooling time t ₆ , so that the particle filter can be removed.

Wherein, the cooling time t6 is 8min _- 15min, and the take-out temperature T4 is ₂₅ °C-100°C.

In the first embodiment, the cooling time t6 is 10min, and the take _- out temperature T4 is room temperature _.

In addition, when the particle filter automatic cleaning equipment cleans the first particle filter, the initial temperature T ₀ is room temperature; when the particle filter automatic cleaning device works continuously to clean the second particle filter, the starting temperature The initial temperature _T'0 is higher than room temperature and lower than the pre-cooling temperature.

When the particle filter cleaning device 3 starts cleaning, the control unit 74 controls the timing unit 64 to start timing so as to obtain the current processing time in real time.

The current target temperature acquiring unit 65 acquires a temperature corresponding to the current processing time on a predetermined heat treatment curve as the current target temperature according to the current processing time.

Fig. 4 is a comparison chart between the predetermined heat treatment curve and the actual heat treatment curve in Example 1 of the present invention.

As shown in Figure 4, the control unit 74 obtains the processing temperature from the processing temperature sensor 40 in real time as the current processing temperature respectively, and at the same time, the display unit 66 displays the current processing temperature in real time, so that the operator can always observe the difference between the current processing temperature and the current target temperature. difference between.

The control unit 74 controls the temperature comparison unit 69 to compare the values of the current processing temperature and the current target temperature to obtain a comparison result.

The control unit 74 controls the opening and closing state of the intake valve 38 in real time according to the difference between the current treatment temperature and the current target temperature, so that the actual heat treatment curve formed by each current treatment temperature conforms to the predetermined heat treatment curve. specifically:

Before the first heating sub-stage (that is, before the timing unit 64 starts timing), the backflow valve control part 741 controls the backflow valve 37 to open, the exhaust valve control part 744 controls the exhaust valve 39 to close, and the drive control part controls the air flow drive unit 6 The blower 13 in the middle starts to work and maintains a certain power, so that the air flow can flow from the drive pipe 14 to the air flow return unit 7, and then flow through the heating unit 8, the air flow input unit 9, the cleaning chamber 10, the air The flow output unit 11 and the air flow driving unit 6 form a circulating flow.

At the same time, the heating control part controls the heating unit 8 to start working, maintains a certain power, and heats the air flow passing through the heating unit 8. The air intake valve control part 743 controls the air intake valve 38 to close, thereby cutting off the access of external air, further making The high-temperature air flow is continuously heated by the heating unit 8 in the circulating flow to form a high-temperature air flow.

Next, the control unit 74 controls the end judging unit 67 of the heating phase to determine whether the current processing time has reached the end time of the first heating sub-phase, whether it has reached the end time of the steady sub-phase, and whether it has reached the end time of the second heating sub-phase.

When the judging unit 67 of the end of the heating phase judges that the current processing time reaches the end time of the first heating sub-phase, the particulate filter cleaning process enters the stable sub-phase from the first heating sub-phase, and the intake valve control unit 743 controls the intake valve 38 to increase the temperature. The degree of opening is large, so that the current processing temperature is maintained at the preheating temperature T ₁ .

When the judging unit 67 of the end of the heating stage judges that the current processing time reaches the end time of the stable sub-stage, the particle filter cleaning process enters the second heating sub-stage from the stable sub-stage, and the intake valve control unit 743 controls the intake valve 38 to decrease to open. To a certain extent, the cold air entering the cleaning chamber 10 becomes less, and the current processing temperature can continue to rise.

When the judging unit 67 judges that the current processing time reaches the end time of the second heating sub-phase, the particulate filter cleaning process enters the high temperature maintenance phase from the heating phase, and the intake valve control unit 743 controls the intake valve 38 to increase the opening degree. , so that the current processing temperature remains at the cleaning temperature T ₂ .

After entering the high temperature maintenance phase, the control unit 74 controls the high temperature maintenance phase end judging unit 68 to judge whether the current processing time reaches the end time of the high temperature maintenance phase.

When the judgment unit 68 of the end of the high temperature maintenance phase judges yes, the particulate filter cleaning process enters the first cooling phase from the high temperature maintenance phase, the heating control unit controls the heating unit 8 to stop processing, and the intake valve control unit 743 controls the intake valve 38 to increase the temperature. Large opening degree.

In addition, in the high temperature maintenance stage, the control unit 74 obtains the temperature sensed by the first auxiliary temperature sensor 41 as the first current auxiliary temperature in real time, and obtains the temperature sensed by the second auxiliary temperature sensor 42 as the second current temperature. auxiliary temperature.

Further, the control unit 74 controls the average auxiliary temperature calculation unit 73 to calculate the average value of the first current auxiliary temperature and the second current auxiliary temperature as the average auxiliary temperature.

Then, the control unit 74 controls the temperature difference judging unit 74 to judge whether the difference between the current processing temperature and the average auxiliary temperature is smaller than a predetermined temperature difference threshold.

When the temperature difference judging unit 74 judges yes, the control unit 74 acquires the next first current auxiliary temperature and the next second current auxiliary temperature, and then controls the auxiliary temperature average calculation unit 73 to perform calculation, and then controls the temperature difference judging unit Step 74 is further judged, and the cycle continues until the end judging unit 68 of the high temperature maintenance phase judges that the end time of the high temperature maintenance phase has been reached.

When the temperature difference judgment unit 74 judges no, the drive control unit controls the air flow drive unit 6 to weaken the driving force, thereby reducing the flow rate of the high-temperature air. At this time, the particle filter can fully contact with the high-temperature air flow, and the particle filter The combustion of oil and particles is more complete, which improves the cleaning efficiency.

The end judging unit 70 of the first cooling stage judges whether the current processing time reaches the ending time of the first cooling stage.

After entering the first cooling stage, the control unit 74 controls the end judging unit 70 of the first cooling stage to judge whether the current processing time reaches the end time of the first cooling stage.

When the end judgment unit 70 of the first cooling stage judges that the end time of the first cooling stage is reached, the particulate filter cleaning process enters the second cooling stage from the first cooling stage, and the intake valve control unit 743 controls the intake valve 38 to fully open. The exhaust valve control unit 744 controls the exhaust valve 39 to open, so that the high-temperature air flow in the cleaning chamber 10 flows from the air flow driving unit 6 to the exhaust unit 33 , and then is discharged from the particle filter cleaning device 3 .

At the same time, the backflow valve control part 741 controls the backflow valve 37 to close, so that the high-temperature air in the air flow backflow unit 7 and the heating unit 8 stays in these two units and maintains a certain residual temperature, which is convenient for the heating unit 8 in the next cleaning process. The air can be heated on the basis of residual temperature.

During the above-mentioned temperature rise stage, high temperature maintenance stage and first temperature drop stage, when the end judgment unit 67 of the temperature rise stage, the end judgment unit 68 of the high temperature maintenance stage, and the end judgment unit 70 of the first temperature drop stage are judged to be negative, the intake valve control unit 743 performs feedback control on the intake valve 38 according to the comparison result. which is:

If the comparison result is that the current processing temperature is higher than the current target temperature, the intake valve control unit 743 controls the intake valve 38 to increase the opening degree, thereby increasing the cold air entering the cleaning chamber 10 and reducing the current processing temperature.

If the comparison result is that the current processing temperature is lower than the current target temperature, the intake valve control unit 743 controls the intake valve 38 to reduce the opening degree, thereby reducing the cold air entering the cleaning chamber 10 and increasing the current processing temperature.

Through the above-mentioned real-time feedback control, the actual heat treatment curve formed by the current treatment temperature at each moment can be made to conform to the theoretical heat treatment curve.

Then, the control unit 74 controls the end judging unit 72 of the second cooling stage to judge whether the current processing time reaches the ending time of the second cooling stage.

When the second cooling stage end judging unit 72 judges that the end time of the second cooling stage has not been reached, the intake valve control unit 743 controls the intake valve 38 to maintain a fully open state, and the exhaust valve control unit 744 controls the exhaust valve 39 Leave it fully open.

When the judgment unit 72 of the end of the second cooling stage judges that the end time of the second cooling stage is reached, the cleaning of the particle filter is finished, and the operator and manager can take out the cleaned particle filter from the particle filter cleaning device 3 .

Fig. 5 is a flow chart of the working process of the particle filter automatic cleaning device according to the first embodiment of the present invention.

As shown in Figure 5, the working process of the particle filter automatic cleaning equipment includes the following steps:

Step S1, the model input unit 62 allows the operator to input the model of the particle filter to be cleaned, and then enters step S2;

Step S2, the heating curve determination unit 63 determines the corresponding heating treatment curve from the curve storage unit 61 according to the model input by the operator, as a predetermined heating treatment curve, and then enters step S3;

Step S3, the control unit 74 controls the corresponding units to be set to the initial state, that is, the backflow valve control part 741 controls the backflow valve 37 to open, the exhaust valve control part 744 controls the exhaust valve 39 to close, and the drive control part controls the air flow in the drive unit 6. The blower 13 starts to work and maintains a certain power, the heating control part controls the heating unit 8 to start working, the intake valve control part 743 controls the intake valve 38 to close, and then enters step S4;

In step S4, the timing unit 64 starts timing, and then enters step S5;

Step S5, the control unit 74 obtains the current processing time from the timing unit 64, and the current target temperature obtaining unit 65 obtains the temperature corresponding to the current processing time on the predetermined heat treatment curve according to the current processing time as the current target temperature. The processing temperature sensor 40 obtains the processing temperature in real time respectively as the current processing temperature, and then enters step S6;

Step S6, the control unit 74 controls the temperature comparison unit 69 to compare the values of the current processing temperature and the current target temperature to obtain a comparison result, and then proceed to step S7;

Step S7, the control unit 74 controls the end judgment unit 70 of the first cooling stage to judge whether the current processing time has reached the end time of the first cooling stage, if it is judged to be no, enter step S8, and if it is judged to be yes, enter step S9;

Step S8-1, the intake valve control unit 743 controls the increase or decrease of the opening degree of the intake valve 38 according to the comparison result, so that the curve formed by each current treatment temperature conforms to the predetermined heat treatment curve, and then enters step S5;

In step S9, the intake valve control unit 743 controls the intake valve 38 to fully open, and the exhaust valve control unit 744 controls the exhaust valve 39 to open, so that the high-temperature air flow in the cleaning chamber 10 flows from the air flow drive unit 6 to the exhaust valve. The air unit 33 is then discharged from the particulate filter cleaning device 3. At the same time, the return valve control part 741 controls the return valve 37 to close, so that the high temperature air in the air flow return unit 7 and the heating unit 8 stays in these two units and Keep a certain residual temperature, and then enter step S10;

Step S10, the control unit 74 controls the second cooling stage end judging unit 72 to judge whether the current processing time reaches the end time of the second cooling stage, until it is judged to be yes, enter step S11;

In step S11, the cleaning of the particulate filter is completed, and the operation and management personnel can take out the cleaned particulate filter from the particulate filter cleaning device 3, and then enter the end state.

Embodiment one function and effect

According to the automatic cleaning equipment for particle filters provided in the first embodiment, since the processing temperature sensor can sense the temperature of the air flow entering the cleaning chamber as the processing temperature, the control device further performs the processing based on the processing temperature and the predetermined heating processing curve. The air valve, heating unit and air flow driving unit are controlled so that the treatment temperature conforms to the predetermined heating treatment curve, so that the treatment temperature can conform to the theoretical heating treatment curve, ensuring that the particle filter can be heated and cleaned accurately according to the predetermined heating treatment curve , so that the cleaning can be completed quickly, and the heating is uniform, and the particle filter can be cleaned without damage, and has a good cleaning effect.

In the first embodiment, because the first auxiliary temperature sensor 41 and the second auxiliary temperature sensor 42 can sense the temperature of the air flow after passing through the particle filter, and then according to the difference between the average value of the air flow temperature at the two places and the current processing temperature Determine whether it is necessary to control the blower 13 in the air flow driving unit 6 to weaken the driving force. Therefore, it is possible to avoid the problem that the particulate filter cannot fully absorb the heat energy in the temperature-sensitive air flow because the air flow velocity is too fast, so that The cleaning process of the particle filter has a high efficiency.

In the first embodiment, since the model input unit 62 and the heating curve determining unit 63 can determine the corresponding predetermined heating treatment curve according to the model of the particulate filter to be cleaned, it can be applied to different types of particulate filters.

In the first embodiment, since the display part displays the current processing temperature and the predetermined heating processing curve in real time, the operator can observe the cleaning stage and processing temperature of the filter cleaning in real time, and take emergency measures if any abnormal situation is found.

<Example 2>

For the convenience of expression, in the second embodiment, the same structures as those in the first embodiment are given the same symbols, and the same descriptions are omitted.

In Embodiment 1, in the temperature rising phase, high temperature maintenance phase and first cooling phase, the intake valve control unit 743 performs feedback control on the intake valve 38 according to the comparison result, so that the current processing temperature conforms to the current target temperature. In contrast, in the second embodiment, the heating control unit performs feedback control on the heating unit 8 according to the comparison result, so that the current processing temperature conforms to the current target temperature.

Fig. 6 is a functional block diagram of the particle filter automatic cleaning device and the control device in the second embodiment of the present invention.

As shown in Fig. 6, the control unit 74' of the control device 4' has an intake valve control part 742' and a heating control part 744' having different control functions from those in the first embodiment. specifically:

When the current processing time is in the heating stage and the high temperature maintenance stage of the theoretical heat treatment curve, when the judgment unit 67 and the high temperature maintenance stage end judging unit 68 are judged to be negative, the heating control part 744′ will control the heating unit 8 according to the comparison result. Feedback control is performed, and compensation control is performed on the heating unit 8 according to the actual temperature change rate. which is:

When the comparison result is that the current processing temperature is higher than the current target temperature, the heating control part controls the heating unit 8 to reduce the power, so that the temperature of the high-temperature air flow heated by the heating unit 8 decreases, so that the current processing temperature decreases.

When the comparison result is that the current processing temperature is lower than the current target temperature, the heating control part controls the heating unit 8 to increase the power, so that the temperature of the high-temperature air flow heated by the heating unit 8 increases, so that the current processing temperature increases.

Through the above-mentioned feedback control and compensation control, the actual heat treatment curve formed by the current treatment temperature at each moment can strictly conform to the theoretical heat treatment curve only by controlling the heating unit 8 .

In the above-mentioned temperature rising stage and high temperature maintaining stage, the intake valve control unit 742' always controls the intake valve 38 to keep closed. In the second embodiment, when the current processing time is in the first cooling stage, the heating control part 744' controls the heating unit 8 to close, and the intake valve control part 742' performs feedback control on the intake valve. The feedback control process in the first cooling stage is the same as that in Embodiment 1, and will not be repeated here.

Fig. 7 is a flowchart of cleaning steps of the particulate filter in the second embodiment of the present invention.

As shown in FIG. 7 , the difference between the particle filter cleaning step of the second embodiment and the first embodiment is that there is an additional temperature control step between step S6 and step S7, namely:

Enter step S12-2 after executing step S6;

Step S12-2, the judging unit for the end of the high temperature maintenance phase judges whether the current processing time has reached the end time of the high temperature maintenance phase, if it is judged to be otherwise, go to step S13-2, if it is judged to be yes, go to step S7;

In step S13-2, the heating control unit 744' controls the heating unit 8 to increase or decrease the power according to the predetermined change value according to the comparison result, and then enters step S5.

In the above process, before the current processing time reaches the end time of the high-temperature maintenance stage (that is, the current processing time is in the heating-up stage and the high-temperature maintenance stage of the theoretical heating treatment curve), the heating unit 8 is feedback-controlled by the heating control part 744 ′ And to make the current treatment temperature conform to the theoretical heat treatment curve. After entering the first cooling stage, the heating control unit 744' controls the heating unit 8 to close, and the intake valve control unit 742' performs feedback control on the intake valve 38 so that the current treatment temperature conforms to the theoretical heating treatment curve.

Embodiment two function and effect

On the basis of having the same function and effect as that of Embodiment 1, in Embodiment 2, the power of the heating unit is controlled by the heating control part according to the comparison result and the actual temperature change rate, so that only the heating unit is controlled. Make the current treatment temperature conform to the theoretical heat treatment curve.

<Example Three>

For the convenience of expression, in the third embodiment, the same structures as those in the first embodiment are given the same symbols, and the same descriptions are omitted.

In Embodiment 1, in the heating up phase, high temperature maintaining phase and first cooling down phase, the intake valve control unit 743 performs feedback control on the intake valve 38 according to the comparison result, so that the current processing unit performs a feedback control on the intake valve 38 according to the comparison result. Feedback control, at the same time, the drive control part performs feedback control on the blower 13 according to the comparison result, so that the current processing temperature can meet the current target temperature more quickly.

Fig. 8 is a functional block diagram of the particle filter automatic cleaning device and the control device in the third embodiment of the present invention.

As shown in FIG. 8 , the control unit 74 ″ of the control device 4 ″ has an intake valve control part 742 ″ and a drive control part 745 ″ that have different control functions from those in the first embodiment. specifically:

When the current processing time is in the heating stage, high temperature maintenance stage and first cooling stage of the theoretical heating treatment curve, when the judgment unit for the end of the heating stage, the end judgment unit for the high temperature maintenance stage and the end judgment unit for the first cooling stage are judged as No, proceed The air valve control unit 742 ″ and the drive control unit 745 ″ respectively perform feedback control on the intake valve 38 and the blower 13 according to the comparison result. which is:

When the comparison result is that the current processing temperature is higher than the current target temperature, the drive control part controls the blower 13 in the air flow drive unit 6 to increase the driving force, and at the same time, the intake valve control part 743 controls the intake valve 38 to increase the degree of opening, thereby Make the current processing temperature drop faster.

When the comparison result is that the current processing temperature is lower than the current target temperature, the drive control part controls the blower 13 in the air flow drive unit 6 to weaken the driving force, and at the same time, the intake valve control part 743 controls the intake valve 38 to reduce the opening degree, thereby Make the current processing temperature rise faster.

Through the above-mentioned feedback control, the actual heat treatment curve formed by the current treatment temperature at each moment can strictly conform to the theoretical heat treatment curve through the combined control of the intake valve 38 and the blower 13 .

Fig. 9 is a flow chart of cleaning steps of the particle filter in the third embodiment of the present invention.

As shown in Figure 9, the difference between the particle filter cleaning steps of the third embodiment and the first embodiment is that step S8 is different, and the step S8-3 of the third embodiment is specifically as follows:

Enter step S8-3 after executing step S7;

Step S8-3, the intake valve control part controls the intake valve to increase or decrease the opening degree according to the comparison result, and at the same time, the drive control part controls the blower to increase or decrease the driving force according to the comparison result, and then enters step S5.

Embodiment three function and effect

On the basis of having the same functions and effects as in Embodiment 1, in Embodiment 3, since the opening degree of the intake valve and the power of the blower are respectively controlled by the intake valve control unit and the drive control unit according to the comparison results, So that the current processing temperature conforms to the theoretical heating processing curve.

<Example 4>

For ease of expression, in the fourth embodiment, the same structures as those in the first embodiment are given the same symbols, and the same descriptions are omitted.

In Embodiment 1, in the temperature rising phase, high temperature maintenance phase and first cooling phase, the intake valve control unit 743 performs feedback control on the intake valve 38 according to the comparison result, so that the current processing temperature conforms to the current target temperature. In contrast, in the fourth embodiment, not only the heating control section performs feedback control on the heating unit 8 according to the comparison result, but also the drive control section performs feedback control on the blower 13 in the air flow drive unit 6 according to the comparison result, so that the current The process temperature more quickly matches the current target temperature.

Fig. 13 is a functional block diagram of the particle filter automatic cleaning device and the control device in the fourth embodiment of the present invention.

As shown in Fig. 10, the control unit 74"' of the control device 4"' has a heating control part 742"' and a drive control part 745"' which have different control functions from those in the first embodiment. specifically:

When the current processing time is in the heating stage, high temperature maintenance stage and first cooling stage of the theoretical heating treatment curve, when the judgment unit for the end of the heating stage, the end judgment unit for the high temperature maintenance stage and the end judgment unit for the first cooling stage are judged as No, heat The control unit 742''' and the drive control unit 745''' respectively perform feedback control on the heating unit 8 and the blower 13 according to the comparison result. which is:

When the comparison result is that the current processing temperature is higher than the current target temperature, the drive control part 745"' controls the blower 13 in the air flow drive unit 6 to increase the driving force, and at the same time, the heating control part 742"' controls the heating unit to reduce the power, so that The current process temperature is lowered faster.

When the comparison result is that the current processing temperature is lower than the current target temperature, the drive control part 745"' controls the blower 13 in the air flow drive unit 6 to weaken the driving force, and at the same time, the heating control part 742"' controls the heating unit to increase the power, so that The current process temperature rises faster.

Through the above-mentioned feedback control, the actual heat treatment curve formed by the current treatment temperature at each moment can strictly conform to the theoretical heat treatment curve through the combined control of the heating unit and the blower.

In the above-mentioned heating up stage and high temperature maintaining stage, the intake valve control part 742"' always controls the intake valve 38 to keep closed. In the fourth embodiment, when the current processing time is in the first temperature drop stage, the heating control part 744"' The heating unit 8 is controlled to be turned off, and the intake valve control unit 742"' performs feedback control on the intake valve. The feedback control process of the first cooling stage in the first cooling stage is the same as that in Embodiment 1, and will not be repeated here.

Fig. 11 is a flow chart of cleaning steps of the particulate filter in Embodiment 4 of the present invention.

As shown in Figure 11, the difference between the cleaning steps of the particle filter in the fourth embodiment and the first embodiment is that step S8 is different, and the step S8-4 in the third embodiment is as follows:

Enter step S8-4 after executing step S7;

In step S8-4, the heating control part controls the heating unit to increase or decrease the power according to the comparison result, and at the same time, the drive control part controls the blower to increase or decrease the driving force according to the comparison result, and then enters step S5.

Embodiment four function and effect

On the basis of having the same action and effect as that of Embodiment 1, in this Embodiment 4, the power of the heating unit and the driving force of the blower are respectively controlled by the heating control part and the drive control part according to the comparison results, so that the current The treatment temperature more quickly conforms to the theoretical heat treatment curve.

<Embodiment 5>

For the convenience of expression, in the fifth embodiment, the same structures as those in the first embodiment are given the same symbols, and the same descriptions are omitted.

In Embodiment 1, in the temperature rising phase, high temperature maintenance phase and first cooling phase, the intake valve control unit 743 performs feedback control on the intake valve 38 according to the comparison result, so that the current processing temperature conforms to the current target temperature. In contrast, in the fifth embodiment, the intake valve control unit 743, the drive control unit, and the heating control unit simultaneously control the corresponding intake valve 38, the blower 13 in the air flow drive unit 6, and the heating unit 8 according to the comparison results. Feedback control is performed so that the current processing temperature conforms to the current target temperature.

Fig. 12 is a functional block diagram of an automatic cleaning device and a control device without a medium particle filter according to an embodiment of the present invention.

As shown in Figure 12, the control unit 74"" of the control device 4"" has an intake valve control part 743"", a heating control part 742"" and a drive control part 745"" that have different control functions from those in the first embodiment. . specifically:

When the current processing time is in the heating stage, high temperature maintenance stage and first cooling stage of the theoretical heating treatment curve, when the judgment unit for the end of the heating stage, the end judgment unit for the high temperature maintenance stage and the end judgment unit for the first cooling stage are judged as No, proceed The air valve control part 743"", the heating control part 742"" and the drive control part 745"" respectively perform feedback control on the intake valve, the heating unit 8 and the blower 13 according to the comparison results. which is:

When the comparison result is that the current processing temperature is higher than the current target temperature, the intake valve control part 743"" controls the intake valve to increase the opening degree, and the drive control part 745"" controls the blower 13 in the air flow drive unit 6 to increase the driving force , at the same time, the heating control unit 742"" controls the heating unit to reduce the power, so that the current processing temperature decreases faster.

When the comparison result is that the current processing temperature is lower than the current target temperature, the intake valve control part 743"" controls the intake valve to reduce the opening degree, and the drive control part 745"" controls the blower 13 in the air flow drive unit 6 to weaken the driving force , at the same time, the heating control unit 742"" controls the heating unit to increase the power, so that the current processing temperature rises faster.

Through the above-mentioned feedback control, the actual heat treatment curve formed by the current treatment temperature at each moment can strictly conform to the theoretical heat treatment curve through the combined control of the heating unit and the blower.

Fig. 13 is a flow chart of cleaning steps of the particulate filter in Embodiment 5 of the present invention.

As shown in Figure 13, the difference between the cleaning steps of the particle filter in the fifth embodiment and the first embodiment is that step S8 is different, and the steps S8-5 in the fifth embodiment are as follows:

Enter step S8-5 after executing step S7;

Step S8-5, the intake valve control part 743"" controls the intake valve to increase or decrease the opening degree, the heating control part controls the heating unit to increase or decrease the power according to the comparison result, and at the same time, the drive control part controls the blower to increase or decrease the power according to the comparison result Or reduce the driving force, and then go to step S5.

Embodiment five function and effect

On the basis of having the same functions and effects as those of Embodiment 1, in Embodiment 5, the opening degree of the intake valve, The power of the heating unit and the driving force of the blower make the current processing temperature conform to the theoretical heating processing curve more quickly.

<Modification>

For ease of expression, in this modified example, the same structures as those in the first embodiment are given the same symbols, and the same descriptions are omitted.

In the first embodiment, the heating phase includes a first heating sub-phase, a steady sub-phase and a second heating sub-phase. In contrast, in this modified example, the heating stage does not include sub-stages, and is a curve (as shown in FIG. 14 ).

In Fig. 14, in the heating stage of the predetermined heating treatment curve, the air flow continues to heat up from the initial temperature T0 (T0 is room temperature) to the cleaning temperature T2 (T2) according to the predetermined heating curve within the first predetermined time t1 (t1=15min). =600°C), the heating rate of this heating curve gradually decreases.

The high temperature maintenance stage, the first temperature drop stage and the second temperature drop stage of the predetermined heat treatment curve are the same as those in Embodiment 1, and will not be repeated here.

Actions and Effects of Modifications

On the basis of having the same functions and effects as those of Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4 and Embodiment 5, in this Modification 1, since the air flow is changed from The initial temperature room temperature continues to rise to the cleaning temperature of 600° C. within the first predetermined time of 15 minutes, and the temperature rise rate of the temperature rise curve gradually decreases. Therefore, compared with Embodiment 1, the temperature of the air flow can reach the cleaning temperature more quickly, further reducing the time spent in the cleaning process.

The above-mentioned embodiment 1, embodiment 2, embodiment 3, embodiment 4, embodiment 5 and modification examples are only used to illustrate the specific implementation of the present invention, and the present invention is not limited to the description scope of the above-mentioned embodiment 1.

In Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4, Embodiment 5, and modifications, the first auxiliary temperature sensor 41 and the second auxiliary temperature sensor 42 are temperature sensors that can sense particles filtered through Airflow temperature behind the device. In other solutions of the present invention, an auxiliary temperature sensor arranged in the cleaning chamber 10 or on the air flow output unit 11 can also be used to sense the temperature of the air flow after passing through the particle filter, and then judge the temperature difference The unit 74 directly judges whether the difference between the current processing temperature and the air flow temperature sensed by the auxiliary temperature sensor is smaller than a predetermined temperature threshold.

In Embodiment 1, Embodiment 2, Embodiment 3, Embodiment 4, Embodiment 5 and modifications, the model input unit 62 is a liquid crystal display provided on the particle filter cleaning device 3 . In other schemes of the present invention, the model input unit 62 can be a mobile terminal. At the same time, there is also a communication unit on the control device 4. After the operator inputs the model of the particle filter to be cleaned on the mobile terminal, the mobile terminal will input the The model is sent to the control device 4, and the communication unit receives the input model, and then the heating curve determining unit 63 determines a predetermined heating treatment curve.

Claims (10)

1. An automatic cleaning device for a particle filter, used for heating and cleaning the particle filter, characterized in that it includes:

   a particulate filter cleaning device for cleaning the particulate filter; and

   a control device for controlling the operation of the particle filter cleaning device,

   Wherein, the particle filter cleaning device includes:

   a cleaning chamber for housing the particle filter;

   a heating unit for heating the air stream;

   an air flow driving unit, configured to provide a driving force for the air flow;

   an intake unit for introducing external air into the cleaning chamber, having an intake valve for controlling the intake of the external air; and

   a process temperature sensor for sensing the temperature of the air flow entering the cleaning chamber as a process temperature,

   The control device controls the intake valve, the heating unit, and the air flow driving unit based on the treatment temperature and a predetermined heat treatment curve, so that the treatment temperature conforms to the predetermined heat treatment curve.
2. The particle filter automatic cleaning device according to claim 1, characterized in that:

   Wherein, the particulate filter cleaning device further includes an airflow input unit, configured to input the high-temperature airflow formed by heating the heating unit into the cleaning chamber,

   The processing temperature sensor is disposed in a boundary area between the air flow input unit and the cleaning chamber,

   The control device has a timing unit, a current target temperature acquisition unit, a temperature comparison unit and a control unit,

   When the particle filter cleaning device starts to clean, the control unit controls the timing unit to start timing so as to obtain the current processing time in real time,

   The current target temperature acquisition unit acquires a temperature corresponding to the current treatment time on the predetermined heating treatment curve as the current target temperature according to the current treatment time,

   The control unit obtains the processing temperature from the processing temperature sensor in real time as the current processing temperature, and controls the temperature comparison unit to compare the current processing temperature and the current target temperature to obtain a comparison result ,

   The control unit controls the working state of at least one of the intake valve, the heating unit and the air flow driving unit according to the comparison result, so that the actual heating formed by each of the current processing temperatures The treatment profile conforms to the predetermined heat treatment profile.
3. The particle filter automatic cleaning device according to claim 2, characterized in that:

   Wherein, the control unit has an intake valve control unit,

   When the comparison result is that the current processing temperature is higher than the current target temperature, the intake valve control unit controls the intake valve to increase the opening degree, thereby reducing the current processing temperature,

   When the comparison result is that the current processing temperature is lower than the current target temperature, the intake valve control unit controls the intake valve to reduce the opening degree, so that the current processing temperature increases.
4. The particle filter automatic cleaning device according to claim 2, characterized in that:

   Wherein, the control unit has a heating control unit,

   When the comparison result is that the current processing temperature is higher than the current target temperature, the heating control part controls the heating unit to reduce power, thereby reducing the current processing temperature,

   When the comparison result is that the current processing temperature is lower than the current target temperature, the heating control part controls the heating unit to increase power, so that the current processing temperature increases.
5. The particle filter automatic cleaning device according to claim 2, characterized in that:

   Wherein, the control unit has a drive control unit,

   When the comparison result is that the current processing temperature is higher than the current target temperature, the driving control part controls the air flow driving unit to increase the driving force, thereby reducing the current processing temperature,

   When the comparison result is that the current processing temperature is lower than the current target temperature, the driving control part controls the air flow driving unit to weaken the driving force, so that the current processing temperature increases.
6. The particle filter automatic cleaning device according to claim 2, characterized in that:

   Wherein, the particle filter cleaning device further includes an air flow output unit for outputting the high-temperature air flow in the cleaning chamber and an auxiliary air flow output unit arranged in the cleaning chamber or on the air flow output unit. temperature sensor,

   The control device also has a temperature difference judgment unit,

   The control unit has a drive control unit,

   The control unit acquires the temperature sensed by the auxiliary temperature sensor in real time as the current auxiliary temperature, and controls the temperature difference judgment unit to judge whether the difference between the current processing temperature and the current auxiliary temperature is less than a predetermined The temperature difference threshold,

   The drive control unit controls the airflow drive unit to weaken the drive force when the temperature difference determination unit determines No.
7. The particle filter automatic cleaning device according to claim 2, characterized in that:

   Wherein, the particulate filter cleaning device further includes an air flow output unit for outputting the high-temperature air flow in the cleaning chamber, a first auxiliary temperature sensor disposed in the cleaning chamber, and a first auxiliary temperature sensor disposed in the cleaning chamber. a second auxiliary temperature sensor on the air flow output unit,

   The control device also has an auxiliary temperature average calculation unit and a temperature difference judgment unit,

   The control unit has a drive control unit,

   The control unit acquires the temperature sensed by the first auxiliary temperature sensor as the first current auxiliary temperature in real time, obtains the temperature sensed by the second auxiliary temperature sensor as the second current auxiliary temperature, and controls the auxiliary The average temperature calculation unit calculates the average value of the first current auxiliary temperature and the second current auxiliary temperature as the average auxiliary temperature,

   The control unit controls the temperature difference judgment unit to judge whether the difference between the current processing temperature and the average auxiliary temperature is smaller than a predetermined temperature difference threshold,

   The drive control unit controls the airflow drive unit to weaken the drive force when the temperature difference determination unit determines No.
8. The particle filter automatic cleaning device according to claim 3, characterized in that:

   Wherein, the control device also has a judging unit for the end of the high temperature maintenance phase and a judging unit for the end of the first cooling phase,

   The control unit includes an intake valve control unit, an exhaust valve control unit, a return valve control unit, a heating control unit and a drive control unit,

   The particle filter cleaning device also includes:

   an exhaust unit for discharging the high-temperature air flow, having an exhaust valve for controlling the discharge of the high-temperature air flow,

   an air flow recirculation unit for recirculating the high-temperature air flow from the air flow output unit to circulate the high-temperature air flow, having a return valve for controlling the reflow of the high-temperature air flow,

   The predetermined heat treatment curve includes at least a high temperature maintenance stage, a first temperature drop stage and a second temperature drop stage,

   During the high temperature maintenance stage, the temperature at which the high temperature air flow is maintained is 550° C. to 700° C., and the duration of the high temperature maintenance stage is 5 minutes to 30 minutes.

   The high temperature maintenance phase end judging unit judges whether the current processing time reaches the end time of the high temperature maintenance phase,

   When the determination unit of the high temperature maintenance stage ends judges yes, the heating control unit controls the heating unit to stop processing, the intake valve control unit controls the intake valve to increase the opening degree,

   The first cooling stage end judging unit judges whether the current processing time reaches the end time of the first cooling stage,

   When the first cooling stage end judging unit judges yes, the intake valve control unit controls the intake valve to fully open, the exhaust valve control unit controls the exhaust valve to open, and at the same time, the The backflow valve control unit controls the backflow valve to close.
9. The particle filter automatic cleaning device according to claim 1, characterized in that:

   Wherein, the control device also has a curve storage unit, a model input unit and a heating curve determination unit,

   The curve storage unit stores models of different particulate filters and heat treatment curves corresponding to the models,

   The model input unit is used to allow the operator to input the model of the particulate filter to be cleaned,

   The heating curve determining unit determines a corresponding heating treatment curve from the curve storage unit according to the input model as the predetermined heating treatment curve.
10. The particle filter automatic cleaning device according to claim 9, characterized in that:

    Wherein, the control device further includes a display unit and a picture storage unit,

    The picture storage unit stores a temperature display picture,

    When the heating curve determining unit determines the predetermined heating treatment curve, the control unit controls the display unit to display the temperature display screen and the predetermined heating treatment curve, and display the current treatment temperature in real time.

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