Control panel, control method, water treatment device, and water treatment method

Abstract

To provide a control panel in which a control component is prevented from being affected by heat generated by a heat-generating component.SOLUTION: A control panel 1 includes one or more heat-generating components 45 capable of software control and / or hardware control, and a control component 65 that controls the heat-generating components 45, and the one or more control components 65 are arranged below the heat-generating components 45.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a control panel, a control method, a water treatment device, and a water treatment method. [Background technology]

[0002] Traditionally, control panels have been used to automate a variety of tasks. Control panels are often made up of control parts that can control software or hardware, terminal blocks for connecting cables, circuit breakers for turning the power on and off, power supplies for supplying DC power, magnetic switches for opening and closing contacts that conduct electricity in electrical circuits, inverters, electric wires, etc. For the convenience of operation, a large number of wires are inserted from the bottom of the control panel to connect the electric circuits of the above-mentioned components, and in order to prevent the valuable control components from being submerged in water, the terminal block and the magnetic switch are generally installed at the bottom of the control panel, and the control components are generally installed at the top of the control panel.

[0003] The control panel described in Patent Document 1 includes a plurality of storage sections, a programmable logic controller (hereinafter referred to as a PLC, a control component), a power supply unit (a heat-generating component), and a molded case circuit breaker (a heat-generating component). Multiple storage compartments (three in this example) are stacked one on top of the other. The second storage compartment from the top houses the PLC, which is the control component. The bottom storage compartment houses the power supply unit and circuit breaker. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2018-014449 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in general, control devices are relatively sensitive to heat, and therefore, if heat generated by the power supply unit and the molded case circuit breaker is transferred to the control device and thermal stress is accumulated in the control device, there is a risk that the control device may be damaged.

[0006] The present invention has been made in consideration of these problems, and aims to provide a control panel that prevents control components from being affected by heat generated by heat-generating components, a control method using this control panel, a water treatment device equipped with this control panel, and a water treatment method using this water treatment device. [Means for solving the problem]

[0007] In order to solve the above problems, the inventors of the present invention have reversed the arrangement of heat generating components at the bottom and control components at the top of a conventional control panel, contrary to common technical knowledge, and have succeeded in solving the above problems. [1] A first aspect of the present invention is a control panel comprising a heat-generating component and one or more control components capable of performing software control and / or hardware control, the control components being positioned below the heat-generating components. [2] A second aspect of the present invention may be the control panel described in [1], wherein the control component is a programmable logic controller.

[0008] [3] A third aspect of the present invention may be the control panel according to [1] or [2], wherein the heat-generating component is one or more of a circuit breaker, a magnetic switch, and a power supply. [4] A fourth aspect of the present invention may be a control panel as described in [2] or [3], further comprising at least one of a relay and a floatless switch connected to the programmable logic controller and the heat-generating component, respectively.

[0009] [5] A fifth aspect of the present invention may be a control panel according to any one of [1] to [4], comprising a housing that houses one or more of the heat generating components and the one or more control components. [6] A sixth aspect of the present invention may be a control panel as described in [5], wherein the housing has a first through hole and a second through hole positioned above the first through hole.

[0010] [7] A seventh aspect of the present invention may be a control panel as described in [6], further comprising a blower attached to the peripheral portion of either the first through hole or the second through hole in the housing. [8] Aspect 8 of the present invention may be a control panel described in any one of [5] to [7], in which an opening is formed on a side of the housing and a door is provided to cover the opening in an openable and closable manner.

[0011] [9] A ninth aspect of the present invention may be the control panel described in [8], which includes a touch panel attached to the door, and a lower end of the touch panel is positioned higher than an upper end of the control component.

[10] A tenth aspect of the present invention is a control method using a control panel described in any one of [1] to [9].

[0012]

[11] An eleventh aspect of the present invention is a water treatment device comprising a control panel according to any one of [1] to [9].

[12] A twelfth aspect of the present invention is a water treatment method using the water treatment device according to

[11] . Effect of the Invention

[0013] The control panel, control method, water treatment device, and water treatment method of the present invention can suppress the control components from being affected by heat generated by heat-generating components. [Brief description of the drawings]

[0014] [Figure 1] FIG. 2 is a front view of the control panel according to the first embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a front view of the control panel with the main door removed. [Figure 4] 4 is a cross-sectional view taken along line A1-A1 in FIG. 3. [Diagram 5] 4 is a cross-sectional view taken along line A2-A2 in FIG. 3. [Figure 6] FIG. 4 is a cross-sectional plan view of a groundwater purification apparatus according to a second embodiment of the present invention. [Figure 7] FIG. 2 is a configuration diagram showing an example of a piping connection structure of the groundwater purification apparatus. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] (First embodiment) Hereinafter, a first embodiment of a control panel according to the present invention will be described with reference to FIGS. 1 to 5. FIG. As shown in Figures 1 to 4, the control panel 1 of this embodiment includes an accommodation section 10, a first fan (fan) 35A, a second fan (fan) 35B, a touch panel 40, a plurality of heat-generating components 45, a relay 55 (hardware-controlled component), a floatless switch 60 (hardware-controlled component), and a PLC (software-controlled component) 65.

[0016] There is no limitation on the configuration of the storage unit 10. As shown in Figures 2 to 4, for example, the storage unit 10 has a housing 11, a large door (control panel door) 26, and a small door 28 (touch panel operation door). The housing 11 has a bottom wall 12, side walls 13A, 13B, a back wall 14, a top wall 15, a horizontal wiring duct 16, a support member 17, vertical wiring ducts 18A, 18B, upper louvers 19bA, 19bB, and lower louvers 19aA, 19aB. The bottom wall 12, the side walls 13A and 13B, the back wall 14, and the top wall 15 are each formed into a flat plate shape.

[0017] In this embodiment, the configuration of side wall 13A and the configuration of side wall 13B are plane symmetrical with respect to reference plane S1 described later. For this reason, the configuration of side wall 13A is indicated by adding the capital letter "A" to the number or number and lowercase English letter of the symbol. The configuration of side wall 13B corresponding to side wall 13A is indicated by adding the capital letter "B" to the same number or number and lowercase English letter of the symbol of side wall 13A. Parts at the top are indicated by adding the lowercase English letter "b". Parts at the bottom are indicated by adding the lowercase English letter "a". This avoids redundant explanations. The louvers 19A, 19B, etc. are similar to the side walls 13A, 13B.

[0018] The bottom wall 12, the side walls 13A and 13B, the back wall 14, and the top wall 15 each have a rectangular shape in a plan view. The bottom wall 12 is disposed so that its thickness direction is along the up-down direction, and is disposed on a supporting surface F such as a floor surface. The bottom wall 12 may have a frame on all four sides (not shown). Hereinafter, when viewed in the up-down direction, the direction along one of two pairs of opposing outer edges of the bottom wall 12 will be referred to as a first direction X, and the direction along the other pair of outer edges will be referred to as a second direction Y. A reference plane S1 is defined that passes through the center of the first direction X of the bottom wall 12 and is perpendicular to the first direction X.

[0019] The side wall 13A extends upward from an end of a first side X1 (hereinafter simply referred to as the first side X1) in a first direction X of the bottom wall 12. Here, in the first direction X, the side opposite to the first side X1 is defined as a second side X2 (hereinafter simply referred to as the second side X2). 5, a first through hole 13aA is formed in a lower portion of the side wall 13A. A second through hole 13bA is formed in an upper portion of the side wall 13A above the first through hole 13aA. That is, a first through hole 13aA and a second through hole 13bA are formed in a side wall 13A of the housing 11, the first through hole 13aA penetrating the side wall 13A in the first direction X. The second through hole 13bA is disposed above the first through hole 13aA. In this example, the first through hole 13aA and the second through hole 13bA each have a rectangular shape when viewed in the first direction X.

[0020] 4, a flange 20A is fixed to an end of the side wall 13A on a first side Y1 (hereinafter simply referred to as the first side Y1) in the second direction Y. Here, in the second direction Y, the side opposite to the first side Y1 is defined as a second side Y2 (hereinafter simply referred to as the second side Y2).

[0021] As shown in FIG. 5, the back wall 14 extends upward from the end of the bottom wall 12 on the second side Y2. The top wall 15 is connected to the upper ends of the side walls 13A and 13B and the upper end of the back wall 14, respectively. 3 and 4, the bottom wall 12, the side walls 13A and 13B, the back wall 14, the top wall 15, and the flanges 20A and 20B form an opening 11a facing the first side Y1 on a side surface of the housing 11. The opening 11a has a rectangular shape when viewed in the second direction Y.

[0022] (Housing) 3, the housing 11 has a plurality of horizontal wiring ducts 16. Each wiring duct 16 is not a partition but a cover through which wiring passes. 4, for example, the support member 17 is formed in a rod shape and extends along the first direction X. Both ends of the support member 17 in the first direction X are fixed to the side walls 13A and 13B. The housing 11 may have a plurality of support members 17. In this case, the plurality of support members 17 are arranged at intervals from each other in the up-down direction. The vertically oriented wiring duct 18A has an L-shape when viewed in the vertical direction and extends in the vertical direction.

[0023] As shown in Fig. 2 and Fig. 4, the housing 11 has two louvers 19A (19aA, 19bA). Each louver 19A has a plurality of slits (reference numbers omitted) penetrating the louver 19A. The two louvers 19A are fixed to the side wall 13A from the outside (first side X1) of the side wall 13A. The two louvers 19A cover the first through hole 13aA and the second through hole 13bA of the side wall 13A, respectively. The housing 11 is manufactured by, for example, bending, punching, and welding a steel plate.

[0024] (door) 1, the large door 26 (control panel door) is formed in a flat plate shape and has a rectangular shape when viewed in the thickness direction of the large door 26. The large door 26 is connected to the side wall 13A of the housing 11 via a hinge (not shown). The large door 26 covers the opening 11a of the housing 11 in an openable and closable manner. A surface 26a of the large door 26 facing the first side Y1 is formed with a recess 26b recessed toward the second side Y2. Small door 28 (touch panel operation door) is formed in a flat plate shape and has a rectangular shape when viewed in the thickness direction of small door 28. Small door 28 is smaller than large door 26. Small door 28 is connected to surface 26a of large door 26 via a hinge (not shown). Small door 28 can cover recess 26b of large door 26 and release the cover. The large door 26 and the small door 28 are manufactured in the same manner as the housing 11.

[0025] (Blower) 4, the first fan 35A is attached to the periphery of the second through-hole 13bA in the housing 11. When the first fan 35A is operated, the first fan 35A forcibly draws in air from the first through-hole 13aA located at the bottom, and exhausts the air inside the storage unit 10 to the outside of the storage unit 10 through the second through-hole 13bA. That is, in this embodiment, the second through-hole 13bA serves as an exhaust hole, and the first through-hole 13aA serves as an air supply hole. The first fan 35A may be attached to the periphery of the first through-hole 13aA in the housing 11. In this case, the first fan 35A is preferably, for example, a ventilation fan. Like the first fan 35A, the second fan 35B is attached to the periphery of the second through-hole 13bB in the housing 11. To increase the heat exchange efficiency of the air, a further fan may be provided in the first through-hole 13aA located at the bottom. Although not shown in FIG. 3, the opening / closing and rotation speed of the first fan 35A and the second fan 35B are preferably controlled by a temperature sensor.

[0026] (Touch panel) The touch panel 40 is a device of known configuration, and functions as an input section and a display section of the control panel 1. As shown in FIG. The heat generating components 45 referred to here are components that are controlled by the PLC 65 and generate heat when in use, and are preferably components with a total heat generation amount of 200 W (watts) or more, more preferably components with a total heat generation amount of 250 W (watts) or more, and further preferably components with a total heat generation amount of 300 W (watts) or more. As shown in FIG. 3, the plurality of heat generating components 45 include a circuit breaker 46, a magnet switch 47, and a power supply (power supply device) 48.

[0027] (Barrier) The circuit breaker 46 is a device that automatically and quickly cuts off the fault (or abnormality) current in an electric circuit. The magnetic switch 47 is a switch for opening and closing a contact that conducts electricity in an electric circuit. The power supply 48 is a device that converts the AC voltage of a commercial power source into a stable DC voltage. The circuit breaker 46 , the magnet switch 47 , and the power supply 48 are supported by a plurality of support members 17 . The number of heat-generating components 45 included in the control panel 1 is not limited, and may be one. In this case, the heat-generating component 45 is any one of the circuit breaker 46, the magnet switch 47, and the power supply 48.

[0028] The total heat generation amount of the circuit breaker 46, the magnet switch 47, and the power supply 48 is preferably 200 W (watts) or more, more preferably 250 W (watts) or more, and even more preferably 300 W (watts) or more. For example, the heat generation amount of the circuit breaker 46 can be calculated by the following formula (1). Heat generation amount = input power of circuit breaker 46 - output power of circuit breaker 46 (1) The amount of heat generation can be transformed into equation (2) by using the efficiency of the circuit breaker 46. Heat generation amount=(output power of circuit breaker 46 / efficiency of circuit breaker 46)-output power of circuit breaker 46 (2) The heat generation amount of the magnet switch 47 and the heat generation amount of the power supply 48 can be calculated in the same manner as the heat generation amount of the circuit breaker 46 .

[0029] (relay) The relay 55 is a hardware control device that turns on / off a switch built in the relay 55. The floatless switch 60 is a switch that does not use a float. The relay 55 and the floatless switch 60 are control parts that perform hardware control. The relay 55 and the floatless switch 60 are connected to the PLC 65 and the plurality of heat generating components 45, respectively, via wiring (not shown).

[0030] (Programmable Logic Controller (PLC)) The PLC 65 is a known control device that performs software control. Sequence control is software control that sequentially advances each control step according to a predetermined order or procedure. The PLC 65 may be capable of performing software control and / or hardware control.

[0031] In this embodiment, the control component, which is the PLC 65, is connected to the touch panel 40, the plurality of heat generating components 45, the relay 55, and the floatless switch 60 via wiring (not shown). The wiring is accommodated in the accommodation spaces 21A and 21B of the housing 11. The PLC 65 controls the touch panel 40, the plurality of heat generating components 45, the relay 55, and the floatless switch 60.

[0032] The PLC 65 is disposed below the plurality of heat generating components 45. To explain in more detail, the upper end of the PLC 65 is disposed below the lower ends of the plurality of heat generating components 45. Here, "A is located lower than B" means that the position where A is located and the position where B is located may be the same in the direction along the horizontal plane, or may be shifted in the direction along the horizontal plane, as long as A is located lower than B. The expression "A is located higher than B" is the same as "A is located lower than B." The upper end of the PLC 65 may be located lower than the lower end of any one of the plurality of heat generating components 45 .

[0033] The control component is a control device capable of implementing software control and / or hardware control. The relay 55 , the floatless switch 60 , and the PLC 65 are supported by a plurality of support members 17 . The lower end of the touch panel 40 is disposed above the upper end of the PLC 65 . The housing 11 houses a plurality of heat generating components 45, a relay 55, a floatless switch 60, and a programmable logic controller 65. This provides better processability and workability than the case in which a plurality of housings are used to house each device as in Patent Document 1.

[0034] As shown in FIG. 4, inside the housing 10, on the first side Y1 of the plurality of heat generating components 45, the relay 55, the floatless switch 60, and the PLC 65, a space S3 through which air flows is formed.

[0035] Next, a description will be given of the operation of the control panel 1 configured as above. For example, the control panel 1 is used by connecting it to a pump that supplies water. For example, an operator opens the small door 28 and operates the touch panel 40 to operate the control panel 1. When the control panel 1 operates, the PLC 65 appropriately operates the heat generating components 45, the relay 55, and the floatless switch 60. In this way, the water treatment device such as the pump is controlled. At this time, the heat generating components 45 etc. generate heat. For example, the total heat generation amount of the heat generating components 45 is 200 W or more. The heat generated by the heat generating components 45 flows upward from the heat generating components 45 through the space S3.

[0036] Because the first fan 35A is operating, for example, air outside the storage unit 10 is sucked into the space S3 inside the storage unit 10 through the first through-hole 13aA of the storage unit 10. This air flows upward through the space S3, cools the PLC 65, and further cools the relay 55, the floatless switch 60, and the plurality of heat-generating components 45, thereby being heated. The heated air is discharged by the first fan 35A to the outside of the storage unit 10 through the second through-hole 13bA. The second fan 35B functions in the same manner as the first fan 35A. When the temperature in the space inside the control panel 1 reaches 25° C. or higher, the first fan 35A and the second fan 35B are operated.

[0037] [Estimated results] - Internal volume of control panel housing: 5.16m 3 Maximum operating temperature for PLC: 55℃ Outside temperature: 38℃ Total heat output from multiple heat generating components: 554.6W Ventilation capacity of the first fan: 0.58m 3 / min

[0038] In this case, the temperature difference between the maximum usable temperature and the outside air temperature is 17°C (=55-38). The heat transfer coefficient is 5(W / (m 2 ·K), the required air volume of the blower is Q Fis obtained by equation (6), where the safety factor is 1.3. Q F =(1 / 20)(554.6 / 17-5×5.16)×1.3 =0.443m 3 / min (6) The ventilation capacity of the first blower is 0.58 m 3 / min, and the required air volume of the blower Q F For this reason, it was found that even if the control panel does not include a second fan and only the first and second through holes for the first fan are formed in the housing, the temperature inside the housing becomes lower than 55°C, which is the maximum usable temperature of the PLC. There is no need to form the first through hole and the second through hole for the second fan in the housing, and processing of the housing is easy.

[0039] As described above, in the control panel 1 of the present embodiment, the PLC 65 is disposed below the plurality of heat-generating components 45. The heat generated by the plurality of heat-generating components 45 flows upward from the plurality of heat-generating components 45. Therefore, it is possible to suppress the PLC 65 from being affected by the heat generated by the plurality of heat-generating components 45. The control panel 1 is compact (small size) and has good workability because the processing of the housing 11 is easy.

[0040] The control part is a PLC 65. Therefore, sequence control can be performed by the programmable logic controller 65. The control panel 1 includes a housing 11. This allows a plurality of heat generating components 45 and a PLC 65 to be housed within the housing 11.

[0041] A first through hole 13aA and a second through hole 13bA are formed in the housing 11. Therefore, for example, the plurality of heat-generating components 45 can be cooled by air drawn into the housing 10 from the outside of the housing 10 (housing 11) through the first through hole 13aA, and the air can be discharged to the outside of the housing 10 through the second through hole 13bA. The control panel 1 includes a first fan 35A, which allows the plurality of heat-generating components 45 and the PLC 65 to be cooled by forcibly flowing air therethrough.

[0042] The control panel 1 includes a large door 26. The large door 26 can cover the opening 11a of the housing 11 in an openable and closable manner. The lower end of the touch panel 40 is disposed above the upper end of the PLC 65. Heat generated by the touch panel 40 flows upward from the touch panel 40. Therefore, it is possible to prevent the PLC 65 from being affected by the heat generated by the touch panel 40.

[0043] In this embodiment, the lower end of the touch panel 40 may be located at the same height as the upper end of the PLC 65 or lower than this upper end. The control panel 1 does not need to include the second fan 35B, and the through holes 13aB, 13bB do not need to be formed in the housing 11. In this case, the first through hole 13aA may be formed at the position of the first through hole 13aB in the side wall 13B. In this case, in the space S3, the air gradually flows toward the first side X1 as it moves upward. The control panel 1 may not include the housing 11, the large door 26, the small door 28, the first blower 35A, and the touch panel 40. The control panel 1 may not include either the relay 55 or the floatless switch 60, or may not include both the relay 55 and the floatless switch 60. The housing 11 does not necessarily have to have the through holes 13aA and 13bA.

[0044] Second embodiment Next, a second embodiment of the control method, water treatment device, and water treatment method of the present invention will be described with reference to Figures 6 and 7, taking the case where the water treatment device is a groundwater purification device as an example. Parts that are the same as those in the above embodiment will be given the same symbols, and their description will be omitted; only the differences will be described. As shown in Figures 6 and 7, for example, the control panel 1 of the first embodiment is used in a groundwater purification device 2 of this embodiment disclosed in Japanese Patent Application Laid-Open No. 2022-110507. The groundwater purification device 2 includes a housing 70, a well pump 75, a sand filtration tower 85, a chemical tank 90, a filter 95, a control panel 1, and a power switching panel 100.

[0045] The well pump 75 pumps up well water from a well 200. The sand filter tower 85 is configured by supporting a filter medium such as sand inside a container. A disinfectant such as hypochlorous acid water is stored in the chemical tank 90. ​​The filter 95 is a known replaceable filter device equipped with a cartridge-type precision filtration membrane inside a container. The power supply switching panel 100 is connected to a commercial power source, an electric vehicle, a control panel 1, etc. The power supply switching panel 100 supplies power supplied from the commercial power source and the electric vehicle, etc., to the control panel 1, etc. The control panel 1 is connected to a well pump 75, etc., and controls the well pump 75, etc. The housing 70 houses a well pump 75, a sand filter tower 85, a chemical tank 90, a filter 95, a control panel 1, and a power switching panel 100.

[0046] In the control method of this embodiment, a well pump 75 and the like are controlled using a control panel 1. In the water treatment method of this embodiment, a groundwater purification device 2 is used. In the water treatment method, when the control panel 1 operates the well pump 75, the well pump 75 pumps up well water from the well 200. The well water passes through the sand filter tower 85 to become sand filtered water. The sand filtered water passes through the filter 95 to become membrane filtered water, and is supplied to the user.

[0047] As described above, the control method of this embodiment can be performed using the control panel 1 in which the PLC 65 is prevented from being affected by the heat generated by the multiple heat-generating components 45. The groundwater purification device 2 of this embodiment can include the control panel 1 that suppresses the influence of heat generated by the multiple heat-generating components 45 on the PLC 65 . Moreover, in the water treatment method of this embodiment, the water treatment method can be performed using the control panel 1 in which the PLC 65 is prevented from being affected by the heat generated by the plurality of heat-generating components 45.

[0048] Although the first and second embodiments of the present invention have been described above in detail with reference to the drawings, the specific configurations are not limited to these embodiments, and the present invention also includes modifications, combinations, deletions, etc. of the configurations within the scope of the gist of the present invention. Furthermore, it goes without saying that the configurations shown in each embodiment can be used in appropriate combinations.

[0049] (Industrial Applicability) According to the above-mentioned aspects of the present invention, it is possible to provide a control panel, a control method, a water treatment device, and a water treatment method that suppress the influence of heat generated by a heat generating component on a control component and control a pump, an electromagnetic valve, etc., at a water treatment site, for example. Therefore, the industrial applicability is great. [Explanation of symbols]

[0050] 1 Control panel 2 Purification equipment (water treatment equipment) 11. Cabinet 11a opening 13aA,13aB 1st through hole 13bA,13bB 2nd through hole 26 Large Door (Door) 35A 1st blower (blower) 35B 2nd blower (blower) 40 Touch Panel 45 Heat generating parts 46 Crossing gate 47 Magnetic Switch 48 Power Supply 55 Relay (hardware control component) 60 Floatless switch (hardware control part) 65 PLC (Software Controlled Parts)

Claims

1. A heat generating component; One or more control components capable of implementing software control and / or hardware control; Equipped with A control panel, wherein the one or more control components are disposed below the heat-generating components.

2. The control board of claim 1 , wherein the control component is a programmable logic controller.

3. The control panel according to claim 1 or 2, wherein the heat generating component is at least one of a circuit breaker, a magnet switch, and a power supply.

4. The control board of claim 2 , further comprising at least one of a relay and a floatless switch connected to the programmable logic controller and the heat generating component, respectively.

5. The control panel according to claim 1 or 2, comprising a housing that houses the one or more heat generating components and the one or more control components.

6. The housing includes: A first through hole; A second through hole disposed above the first through hole; The control panel of claim 5 , further comprising:

7. The control panel according to claim 6 , further comprising a blower attached to a peripheral portion of either the first through hole or the second through hole in the housing.

8. An opening is formed in a side surface of the housing, The control panel according to claim 5 , further comprising a door that opens and closes the opening.

9. A touch panel is provided on the door, The control panel according to claim 8 , wherein a lower end of the touch panel is disposed above an upper end of the control component.

10. A control method using the control panel according to claim 1 or 2.

11. A water treatment device comprising the control panel according to claim 1 or 2.

12. A water treatment method using the water treatment device according to claim 11.

Images