Dust collector and method for controlling the temperature of the dust collector

Abstract

This prevents condensation from forming in the internal hopper. [Solution] The dust collector is a dust collector that collects dust from dust-containing air, and comprises a plurality of heating units that heat a predetermined area of ​​the dust collector, a detection unit that detects the temperature of the predetermined area of ​​the dust collector, a determination unit that determines the number of heating units to operate based on the set temperature of the predetermined area and the detected temperature, and an operation unit that operates the determined number of heating units. The number of heating units to operate is determined based on the set temperature of the predetermined area and the detected temperature, and the determined number of heating units are operated. Therefore, it is possible to suppress the occurrence of condensation in the predetermined area inside the dust collector due to the temperature of the area falling below the set temperature because the number of heating units that heat the predetermined area of ​​the dust collector is too small.

Description

Technical Field

[0001] The technology of the present disclosure relates to a dust collection device and a method for controlling the temperature of the dust collection device.

Background Art

[0002] Conventionally, a dust collection device has been proposed that collects dust (dirt) in the gas from an incinerator and discharges it to the outside as clean air (Patent Document 1). A hopper for storing dust is arranged inside the dust collection device, and the dust accumulated in the hopper is discharged to the outside by a dust discharge device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when the operation of the dust collection device stops, the inflow of high-temperature gas from the incinerator stops, and condensation occurs inside the dust collection device. The gas from the incinerator contains acidic gas, and when condensation occurs, the inside of the dust collection device is corroded by the acidic water.

[0005] The technology of the present disclosure aims to provide a dust collection device and a method for controlling the temperature of the dust collection device that can suppress the problem caused by condensation occurring in a predetermined region of the dust collection device.

Means for Solving the Problems

[0006] To achieve the above objective, a first aspect of the technology of this disclosure is a dust collector for collecting dust from dust-containing air. The dust collector comprises a plurality of heating units for heating a predetermined area of ​​the dust collector, a detection unit for detecting the temperature of the predetermined area of ​​the dust collector, a determination unit for determining the number of heating units to operate based on a set temperature of the predetermined area and the detected temperature, and an operation unit for operating the determined number of heating units.

[0007] A second aspect is a temperature control method for a dust collector that collects dust from dust-containing air. In this temperature control method for a dust collector, a detection unit detects the temperature of a predetermined area of ​​the dust collector, a determination unit determines the number of heating units to operate from among a plurality of heating units based on the set temperature of the predetermined area and the detected temperature, and an operation unit operates the determined number of heating units.

[0008] A third embodiment is a dust collector for collecting dust from dust-containing air. The dust collector comprises a plurality of heating units that heat a predetermined area of ​​the dust collector, a determination unit that determines the number of heating units to operate based on the downtime during which the dust collector was not operating, and an operating unit that operates the determined number of heating units.

[0009] A fourth embodiment is a dust collector for collecting dust from dust-containing air. The dust collector comprises a plurality of heating units for heating a predetermined area of ​​the dust collector, a prediction unit for predicting the start time of operation while the dust collector is stopped, and an operation unit for activating at least one of the plurality of heating units a predetermined time before the start time of operation. [Effects of the Invention]

[0010] The technology of this disclosure determines the number of heating units to operate based on the set temperature of the predetermined region and the detected temperature, and operates the determined number of heating units. Therefore, it is possible to suppress the occurrence of condensation in the predetermined region inside the dust collector, which would occur if the number of heating units heating the predetermined region of the dust collector were too small and the temperature in the predetermined region fell below the set temperature. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a perspective view of an example of a dust collector 10 according to the first embodiment. [Figure 2] Figure 2 is a block diagram of an example of the electrical system of the dust collector 10 according to the first embodiment. [Figure 3] Figure 3 shows an example of the processing performed by the input unit 52A, calculation unit 52B, extraction unit 52C, and operation unit 52D in the first embodiment. [Figure 4] Figure 4 is a flowchart of an example of the temperature control program 54P according to the first embodiment. [Figure 5] Figure 5 is a graph showing an example of the relationship between the temperature difference dt between the set temperature sT and the detected temperature Td in the first embodiment, and the number of operating units. [Figure 6] Figure 6 is a graph showing examples of temperature control results for the hopper 10H in the first embodiment and examples of temperature control results using the conventional technology. [Figure 7] Figure 7 is a flowchart of an example of the temperature control program 54P according to the second embodiment. [Figure 8] Figure 8 shows an example of the contents of the NVM54 in the third embodiment. [Figure 9] Figure 9 is a flowchart of an example of the temperature control program 54P in the third embodiment. [Figure 10] Figure 10 is a graph showing an example of the relationship between downtime and the number of operating units. [Figure 11] Figure 11 shows an example of the contents of the NVM54 in the fourth embodiment. [Figure 12] Figure 12 is a flowchart of an example of the temperature control program 54P according to the fourth embodiment. [Modes for carrying out the invention]

[0012] [Embodiment] Embodiments of the technology of this disclosure will be described below with reference to the drawings.

[0013] [First Embodiment] (Configuration) The configuration of the dust collector 10 of this embodiment will be described. FIG. 1 is a perspective view of an example of the dust collector 10. As shown in FIG. 1, the dust collector 10 collects dust from the dust-containing air from the incinerator and deposits the collected dust. Since the dust collector 10 is well-known, detailed description thereof will be omitted. The dust collector 10 includes a plurality of heaters 12J1, 12J2, 12K1, 12H1 to 12H8, 12I1 to 12I4,... that heat a predetermined area portion, for example, the hopper 10H and the ceiling portion 10T, from the outer surface of the device. For example, in the hopper 10H, for each of the two relatively wide side surfaces, eight heaters 12H1 to 12H8 arranged in four rows and two columns, and for each of the two relatively narrow side surfaces, four heaters 12I1 to 12I4 arranged in four rows and one column are provided. The number of heaters is not limited to 8 and 4, and may be 2, 3,..., 7, 9, 10,.... Also, for example, in the ceiling portion 10T, for each of the two relatively wide side surfaces, two heaters 12J1 and 12J2 arranged in one row and two columns, and for each of the two relatively narrow side surfaces, one heater 12K1 are provided. The number of heaters is not limited to 2 and 1, and may be 3,..., 7, 9, 10,.... In the following, the temperature control method will be described by taking the hopper 10H as an example, since the hopper 10H and the ceiling portion 10T are the same.

[0014] The dust collector 10 includes a detection sensor 14 that detects the temperature of the hopper 10H and is disposed at the center of the eight heaters 12H1 to 12H8 on one relatively wide side surface.

[0015] FIG. 2 is a block diagram of an example of the electrical system of the dust collector 10. As shown in FIG. 2, the dust collector 10 includes a control device 16. The control device 16 is composed of a computer and includes a processor 52, a NVM (Non-volatile memory) 54, a RAM (Random Access Memory) 56, and an input / output (I / O) port 58. The processor 52, the NVM 54, the RAM 56, and the input / output (I / O) port 58 are interconnected by a bus 60. The detection sensor 14 and eight heaters 12H1 to 12H8 are connected to the input / output (I / O) port 58.

[0016] The processor 52 is a processing device including a DSP (Digital Signal Processor), a CPU (Central Processing Unit), and a GPU (Graphics Processing Unit). The DSP and the GPU in the processor 52 operate under the control of the CPU and are responsible for executing each of the processes described later. Here, as an example of the processor 52, a processing device including a DSP, a CPU, and a GPU is given, but this is only an example. The processor 52 may be one or more CPUs and DSPs integrating the GPU function, or one or more CPUs and DSPs not integrating the GPU function. The processor 52 may be equipped with a TPU (Tensor Processing Unit).

[0017] The functional part of the processor 52 includes a capturing part 52A, a calculating part 52B, an extracting part 52C, and an operating part 52D.

[0018] NVM54 is a non-volatile memory device that stores programs and various parameters. An example of NVM54 is flash memory (e.g., EEPROM (Electrically Erasable and Programmable Read Only Memory)). NVM54 stores a temperature control program 54P and a temperature difference number relationship graph 54G (see also Figure 5). As will be described in detail later, the temperature difference number relationship graph 54G shows the relationship between the temperature difference between the set temperature sT and the detected temperature, and the number of heaters 12H1 to 12H8 that are in operation. This relationship is not limited to being stored as a graph; it may also be stored as a data table or a relational expression.

[0019] RAM56 is memory that temporarily stores information and is used as work memory by the processor 52. Examples of RAM56 include DRAM (Dynamic Random Access Memory) or SRAM (Static Random Access Memory).

[0020] When the temperature control program 54P is read from the NVM 54 to the RAM 56 and executed by the processor 52 in the RAM 56, the processor 52 functions as an input unit 52A, a calculation unit 52B, an extraction unit 52C, and an operation unit 52D.

[0021] Figure 3 shows an example of the processing performed by the input unit 52A, the calculation unit 52B, the extraction unit 52C, and the operation unit 52D.

[0022] The input unit 52A acquires the detected temperature Td from the detection sensor 14. The calculation unit 52B calculates the temperature difference dt between the detected temperature Td and the set temperature sT. The extraction unit 52C extracts the number of heaters to operate from the temperature difference dt. The operation unit 52D operates the number of heaters that were extracted.

[0023] (action) Next, the operation of this embodiment will be explained.

[0024] Figure 4 is a flowchart of an example of the temperature control program 54P. The temperature control program 54P starts when the start button (not shown) is turned on. When the temperature control program 54P is executed, the temperature control process and temperature control process method are executed. In the following example, the control of eight heaters 12H1 to 12H8 located on one relatively wide side of the hopper 10H is described. The same applies to the other sides.

[0025] In step 22, the input unit 52A acquires the temperature Td detected from the detection sensor 14.

[0026] In step 24, the calculation unit 52B calculates the temperature difference dt between the detected temperature Td and the set temperature sT. The set temperature sT is a temperature that is a predetermined value greater than the temperature T0, which is predetermined to be such that condensation does not occur on the dust accumulated in the hopper 10H.

[0027] In step 26, the extraction unit 52C extracts the number of heaters 12H1 to 12H8 that will operate based on the temperature difference dt.

[0028] Figure 5 is a graph showing an example of the relationship between the temperature difference dt between the set temperature sT and the detected temperature Td, and the number of units to operate. This relationship is determined in advance through experiments, etc., as the number of heaters 12H1 to 12H8 that need to be operated for a given temperature difference dt to bring the hopper 10H to the set temperature, and is stored in the NVM 54 as the graph shown above. The extraction unit 52C extracts the number corresponding to the temperature difference dt from the above relationship (see Figure 5). For example, if the temperature difference dt is dt0, the number extracted from the above relationship is 3.

[0029] In step 28, the operating unit 52D activates the extracted number of heaters. For example, the processor selects the extracted number of heaters from the eight heaters 12H1 to 12H8 arranged in a 4x2 grid, moving from left to right and from top to bottom.

[0030] In step 30, the operating unit 52D determines whether or not the termination of the temperature control process has been instructed by determining whether or not an exit button (not shown) has been turned on.

[0031] If it is not determined that the temperature control process has been instructed to end, the temperature control process returns to step 22 and executes the above processes (steps 22 to 30).

[0032] If it is determined that the temperature control process should be terminated, the temperature control process will be terminated.

[0033] (effect) Figure 6 is a graph showing examples of temperature control results for the hopper 10H in this embodiment and the temperature control results of the conventional technology. In the conventional temperature control method, when the hopper temperature falls below the set temperature sT, all eight heaters are turned on, and when the hopper temperature rises above the set temperature sT, all eight heaters are turned off. In other words, it is on / off feedback control. The result is shown as graph g1. As shown in graph g1, in the conventional technology, the hopper temperature fluctuates around the set temperature sT and may fall below the temperature T0 at which condensation does not occur on the dust accumulated in the hopper. For this reason, the set temperature may be set higher.

[0034] The results of temperature control in this embodiment are shown in graph g2. As shown in graph g2, the temperature of hopper 10H fluctuates around the set temperature, but the amount of change is smaller than that of the conventional technology. Also, the temperature of hopper 10H does not fall below temperature T0.

[0035] As described above, in this embodiment, the number of heaters 12H1 to 12H8 to be operated is determined based on the temperature difference between the set temperature sT of the hopper 10H and the detected temperature, and the determined number of heaters 12H1 to 12H8 are operated. Therefore, it is possible to suppress the occurrence of condensation in the hopper 10H due to the temperature of the hopper 10H falling below the set temperature because the number of heaters 12H1 to 12H8 to be operated is too small. Therefore, it is possible to suppress problems such as corrosion caused by condensation.

[0036] Furthermore, in the conventional technology, as shown in Figure 6, the hopper temperature remains above the set temperature sT for an extended period, resulting in excessive power consumption and an overshoot problem. In contrast, in this embodiment, the change in temperature of the hopper 10H is smaller than that of the conventional technology, and the temperature does not remain above the set temperature sT for an extended period. Therefore, this embodiment achieves energy savings and prevents the overshoot problem. In the conventional technology, it is conceivable to set the set temperature itself higher than sT in Figure 6 to prevent the temperature from falling below T0, but this would result in even greater power consumption. In this invention, the set temperature can be set to sT, which is equivalent to that of the conventional technology, while the number of heaters operating to prevent the temperature from falling below sT can be set, thereby suppressing corrosion caused by condensation.

[0037] [Second Embodiment] (composition) The configuration of the dust collector 10 in this embodiment is the same as in the first embodiment, so its description will be omitted. Note that the extraction unit 52C of the first embodiment is not included as a functional unit of the processor 52.

[0038] (action) Next, the operation of this embodiment will be explained.

[0039] Figure 7 is a flowchart of an example of the temperature control program 54P. The temperature control program 54P starts when a start button (not shown) is turned on. When the temperature control program 54P is executed, the temperature control process and the temperature control process method are executed.

[0040] In step 42, the operating unit 52D activates the heaters 12H1 to 12H8.

[0041] In step 44, the data acquisition unit 52A acquires the temperature Td detected from the detection sensor 14.

[0042] In step 46, the calculation unit 52B calculates the temperature difference dt between the detected temperature Td and the set temperature sT. As described above, the set temperature sT is a temperature that is a predetermined value greater than the temperature T0 which is predetermined to not cause condensation on the dust accumulated in the hopper 10H.

[0043] In step 48, the operating unit 52D determines whether the temperature difference dt is 0 or not. If it is determined that the temperature difference dt is 0, the temperature control process proceeds to step 51. If it is not determined that the temperature difference dt is 0, the temperature control process proceeds to step 53.

[0044] In step 51, the operating unit 52D stops the operation of the heaters 12H2, 12H6, 12H4, and 12H8 of the second and fourth rows. After the processing in step 51, the temperature control process proceeds to step 57.

[0045] In step 53, the operating unit 52D determines whether the detected temperature Td is higher than the set temperature sT. If it is determined that the detected temperature Td is higher than the set temperature sT, the temperature control process proceeds to step 51. If it is determined that the detected temperature Td is not higher than the set temperature sT, the temperature control process proceeds to step 55.

[0046] In step 55, the operating unit 52D activates the heaters 12H2, 12H6, 12H4, and 12H8 of the second and fourth rows. After the processing in step 55, the temperature control process proceeds to step 57.

[0047] In step 57, the operating unit 52D determines whether or not the temperature control process has been instructed to end by determining whether or not an exit button (not shown) has been turned on.

[0048] If it is not determined that the temperature control process has been instructed to end, the temperature control process returns to step 44 and executes the above processes (steps 44 to 57).

[0049] If it is determined that the temperature control process should be terminated, the temperature control process will be terminated.

[0050] (effect) As explained above, in this embodiment, of the heaters 12H1 to 12H8, four predetermined heaters in the first and third rows, 12H1, 12H5, 12H3, and 12H7, are always operated. The remaining heaters in the second and fourth rows, 12H2, 12H6, 12H4, and 12H8, are operated or not operated depending on the temperature difference dt. In other words, open-loop control is performed for the heaters in the first block (first and third rows), and feedback control is performed for the heaters in the second block (second and fourth rows).

[0051] As described above, in the conventional technology, all eight heaters are controlled by on / off feedback control, whereas in this embodiment, half of the heaters are controlled by open-loop control, and the remaining half are controlled by feedback control.

[0052] In this embodiment, open-loop control is performed for half of the heaters to raise the temperature of hopper 10H above a certain temperature, and feedback control is performed for the remaining heaters to raise the temperature of hopper 10H to the set temperature. Therefore, it is possible to prevent condensation from forming inside hopper 10H due to the temperature of hopper 10H falling below the set temperature because the number of heaters 12H1 to 12H8 being operated is too small. Thus, problems such as corrosion caused by condensation can be suppressed.

[0053] Furthermore, the temperature change in hopper 10H can be reduced compared to conventional technology. The temperature does not remain above the set temperature sT for an extended period. Therefore, in this embodiment, energy savings can be achieved and the problem of overshoot can be suppressed.

[0054] Furthermore, the number of heaters may be increased to three or more per block, or the number of blocks may be increased to three or more. Also, the feedback control in this embodiment may be PID feedback control (proportional, integral, and derivative control). By adjusting each of the proportional, integral, and derivative components, it is possible to further reduce overshoot or shorten the time it takes to reach the set temperature.

[0055] [Third Embodiment] (composition) The configuration of the dust collector 10 in this embodiment is the same as in the first embodiment, so its details are omitted.

[0056] Figure 8 shows an example of the contents stored in the NVM 54 of the third embodiment. As shown in Figure 8, the NVM 54 stores the temperature control program 54P, as well as the stop time 54m and the stop time number relationship graph 54n (see also Figure 10).

[0057] (action) Next, the operation of this embodiment will be explained.

[0058] Figure 9 is a flowchart of an example of a temperature control program 54P according to the third embodiment. The temperature control program 54P starts when a start button (not shown) is turned on. When the temperature control program 54P is executed, the temperature control process and the temperature control process method are executed.

[0059] In step 62, the calculation unit 52B calculates the stop time of the dust collector 10 from the current time and the stop time 54m of the time when the operation of the dust collector 10 stopped, which is stored in the NVM 54.

[0060] In step 64, the extraction unit 52C extracts the number of operating heaters from the calculated stop time and the stop time number relationship graph 54n stored in the NVM 54.

[0061] Figure 10 is a graph showing an example of the relationship between downtime and the number of operating units. This relationship is determined in advance through experiments, etc., to determine how many heaters 12H1 to 12H8 need to be operated to suppress problems such as corrosion even if condensation occurs on the dust accumulated in the hopper 10H, and this is stored in the NVM 54 as the above graph. The longer the downtime during which the dust collector 10 is stopped, the more heaters are heated (operated). The extraction unit 52C extracts the number corresponding to the displayed time from the above relationship (see Figure 10). For example, if the downtime is ts, the number extracted from the above relationship is 3.

[0062] The above relationships are not limited to being stored as graphs; they may also be stored as data tables or relational expressions.

[0063] In step 66, the operating unit 52D activates the extracted number of heaters. For example, the processor selects and activates the extracted number of heaters from among the eight heaters 12H1 to 12H8 arranged in a 4x2 grid, moving from left to right and top to bottom.

[0064] In step 68, the operating unit 52D determines whether or not the termination of the temperature control process has been instructed to end by determining whether or not an exit button (not shown) has been turned on.

[0065] If it is not determined that the temperature control process has been instructed to end, the temperature control process returns to step 62 and executes the above processes (steps 62 to 68). If it is determined that the temperature control process has been instructed to end, the temperature control process proceeds to step 70.

[0066] In step 70, the operating unit 52D stores the stop time in the NVM 54. Once the process in step 70 is complete, the temperature control process ends.

[0067] (effect) As explained above, in this embodiment, the longer the time the dust collector 10 is stopped, the more heaters are used to heat (operate) and the greater the amount of heat generated. Therefore, if condensation occurs in the hopper 10H, problems such as corrosion due to condensation can be suppressed to be less severe compared to when the number of heaters is kept constant.

[0068] Furthermore, the heating temperature of the heaters may be controlled along with the number of heaters depending on the length of time the dust collector 10 is stopped. This can help prevent the above-mentioned problems caused by condensation from becoming more severe.

[0069] Steps 62 to 66 of the third embodiment may be performed before step 22 of the first embodiment, or before step 42 of the second embodiment.

[0070] [Fourth Embodiment] (composition) The configuration of the dust collector 10 in this embodiment is substantially the same as that of the first embodiment, so the differences will be described primarily.

[0071] Figure 11 shows an example of the contents stored in the NVM 54 of the fourth embodiment. As shown in Figure 11, the NVM 54 stores the temperature control program 54P as well as the start time 54r.

[0072] The dust collector 10 is equipped with a communication device (not shown). The start time of operation is received from a terminal device (e.g., a smartphone) via the communication device and stored in the NVM 54.

[0073] Furthermore, the functional units of the processor 52 do not include the input unit 52A, calculation unit 52B, and extraction unit 52C of the first embodiment.

[0074] (action) Next, the operation of this embodiment will be explained.

[0075] Figure 12 is a flowchart of an example of a temperature control program 54P according to the fourth embodiment. The temperature control program 54P starts after a predetermined time (for example, 6 hours) has elapsed since the dust collector 10 stopped operating. When the temperature control program 54P is executed, the temperature control process and the temperature control process method are executed.

[0076] In step 72, the operating unit 52D predicts the start time of its next operation. Specifically, the operating unit 52D predicts the start time by reading it from the NVM 54. However, it is not limited to reading the start time from the NVM 54. For example, each time the dust collector 10 starts up, the start time, date, and day of the week may be stored in association with each other, and the start time in step 72 may be predicted by reading the stored start time corresponding to at least one of the date and day of the week at the start of the step.

[0077] In step 74, the operating unit 52D determines whether it is a predetermined time (for example, 3 hours) before the start time of operation. This determination is repeated if the result is negative until the result becomes positive.

[0078] If it is determined that the time is earlier than the scheduled start time, in step 76, the operating unit 52D activates the heaters 12H1 to 12H8.

[0079] In step 78, the operating unit 52D determines whether or not the termination of the temperature control process has been instructed to end by determining whether or not an exit button (not shown) has been turned on.

[0080] If it is not determined that the temperature control process has been instructed to end, the temperature control process returns to step 78 and executes the above processes (steps 72 to 78).

[0081] If it is determined that the temperature control process should be terminated, the temperature control process will be terminated.

[0082] (effect) As explained above, in this embodiment, the start time of the next operation is predicted, and when a predetermined time has passed before the start time, the heaters 12H1 to 12H8 are activated to preheat. Therefore, condensation can be prevented and corrosion can be reduced. This makes it possible to suppress the above-mentioned problems caused by condensation from becoming more severe.

[0083] Steps 72-76 of the fourth embodiment may be performed before step 22 of the first embodiment, or before step 42 of the second embodiment.

[0084] [Note] Based on the above disclosures, the following addendum is proposed.

[0085] (Note 1) A dust collector that collects dust from dusty air, Multiple heating units for heating a predetermined area of ​​the dust collector, A detection unit for detecting the temperature of a predetermined area of ​​the dust collector, A determination unit that determines the number of heating units to operate based on the set temperature of the predetermined region and the detected temperature, An operating unit that operates the determined number of heating units, A dust collector equipped with the following features.

[0086] (Note 2) The operating unit operates a predetermined first number of heating units, and operates the remaining heating units based on the set temperature of the predetermined region and the detected temperature. The dust collection device described in Appendix 1.

[0087] (Note 3) The determination unit determines the number of heating units to be operated based on the downtime during which the dust collector was not operating. A dust collection device as described in Appendix 1 or Appendix 2.

[0088] (Note 4) The operating unit activates at least one of the plurality of heating units a predetermined time before the start of operation. A dust collection device as described in any one of the items in Appendix 1 to Appendix 3.

[0089] (Note 5) A method for controlling the temperature of a dust collector that collects dust from dust-containing air, The detection unit detects the temperature of a predetermined area of ​​the dust collector, The determination unit determines the number of heating units to operate among the multiple heating units based on the set temperature of the predetermined region and the detected temperature. The operating unit operates the determined number of heating units. A method for controlling the temperature of a dust collector.

[0090] (Note 6) A dust collector that collects dust from dusty air, Multiple heating units for heating a predetermined area of ​​the dust collector, A determination unit that determines the number of heating units to be operated based on the downtime during which the dust collector was not in operation, An operating unit that operates the determined number of heating units, A dust collector equipped with the following features.

[0091] (Note 7) A dust collector that collects dust from dusty air, Multiple heating units for heating a predetermined area of ​​the dust collector, The dust collector, while stopped, has a prediction unit that predicts the start time of operation, An operating unit that operates at least one of the plurality of heating units at a predetermined time before the start time of operation, A dust collector equipped with the following features. [Explanation of Symbols]

[0092] 10. Dust collector 10H Hopper 12J1, 12J2, 12K1, 12H1~12H8, 12I1~12I4 Heater 14 detection sensors 16 Control device 52 processors 52A Entrance 52B Calculation section 52C Extraction part 52D Moving part

Claims

1. A dust collector that collects dust from dusty air, Multiple heating units for heating a predetermined area of ​​the dust collector, A detection unit for detecting the temperature of a predetermined area of ​​the dust collector, A determination unit that determines the number of heating units to operate based on the set temperature of the predetermined region and the detected temperature, An operating unit that operates the determined number of heating units, A dust collector equipped with the following features.

2. The operating unit operates a predetermined first number of heating units, and operates the remaining heating units based on the set temperature of the predetermined region and the detected temperature. The dust collection device according to claim 1.

3. The determination unit determines the number of heating units to be operated based on the downtime during which the dust collector was not operating. The dust collection device according to claim 1.

4. The operating unit activates at least one of the plurality of heating units a predetermined time before the start of operation. The dust collection device according to claim 1.

5. A method for controlling the temperature of a dust collector that collects dust from dust-containing air, The detection unit detects the temperature of a predetermined area of ​​the dust collector, The determination unit determines the number of heating units to operate among the multiple heating units based on the set temperature of the predetermined region and the detected temperature. The operating unit operates the determined number of heating units. A method for controlling the temperature of a dust collector.

6. A dust collector that collects dust from dusty air, Multiple heating units for heating a predetermined area of ​​the dust collector, A determination unit that determines the number of heating units to be operated based on the downtime during which the dust collector was not in operation, An operating unit that operates the determined number of heating units, A dust collector equipped with the following features.

7. A dust collector that collects dust from dusty air, Multiple heating units for heating a predetermined area of ​​the dust collector, The dust collector, while stopped, has a prediction unit that predicts the start time of operation, An operating unit that operates at least one of the plurality of heating units at a predetermined time before the start time of operation, A dust collector equipped with the following features.

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