JP2023113334A - Factory environment improvement system, and factory environment improvement method - Google Patents

Abstract

To provide a factory environment improvement system and a factory environment improvement method that can improve work environment by suppressing temperature rise in a factory while reducing air conditioning burden and promoting energy saving.SOLUTION: A factory environment improvement system comprises: a processor 10 which is provided in a factory, and in which a processing space 11 is surrounded by a cover 12; an air cleaner 20 provided with an air cleaning part 21 for sucking air from a suction port and cleaning the same, and an air cooling part 22 for cooling cleaned air cleaned by the air cleaning part 21; a suction duct 30 which connects the processing space 11 and the suction port; and an air-cooled temperature controller 40 which has an air intake port for taking in air for cooling a refrigerant and an air discharge port 42 for discharging air that has cooled the refrigerant into the factory, and in which cleaned cooling air cooled by the air cooling part 22 is introduced into the air intake port.SELECTED DRAWING: Figure 1

Description

Patent Act Article 30, Paragraph 2 Application Applied Seminar "Energy Saving Seminar for Businesses in Komaki", November 17, 2021 November 25, 2021, https://www. youtube. com/watch? v=usK0oNaUVQM

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a factory environment improvement system and a factory environment improvement method for reducing air-conditioning load and improving the environment in a factory where processing machines are installed.

2. Description of the Related Art In recent years, in factories equipped with processing machines and the like, introduction of air-conditioning equipment has promoted a more comfortable environment (working environment) in the factory. In addition, in order to improve productivity and save space, efforts are being made to increase the processing speed and to reduce the size of processing machines and cutting fluid tanks. However, due to the increase in processing speed and the downsizing of processing machines, etc., there has been a problem that the work environment deteriorates due to an increase in processing exhaust including oil mist from the processing machines and a rise in temperature in the factory.

The inventors of the present application made a detailed investigation of the above problems and found the following. First, the temperature of the cutting fluid recovered from the processing machine has risen due to the increased processing speed. At this time, if the cutting fluid tank in which the cutting fluid collected from the processing machine is stored is miniaturized due to space saving, it will be necessary to purify the collected cutting fluid and supply it to the processing machine again. As a result, it becomes difficult to lower the temperature of the cutting fluid to room temperature, and the cutting fluid having a higher temperature than the room temperature is supplied to the processing machine again. As a result, the processing machine processes the work in an environment with a higher temperature than normal temperature. was occurring. Therefore, an air-cooled temperature controller (air-cooled chiller) is provided in the cutting fluid tank to cool the cutting fluid supplied to the processing machine and adjust its temperature. However, since this air-cooled temperature controller discharges high temperature (50° C. to 55° C.) exhaust heat into the factory, this has been one of the causes of temperature rise in the factory.

In addition, as the machining speed has increased, the discharge pressure of the cutting fluid supplied to the workpiece has been increased, so the cutting fluid and chips strongly collide with the inner wall of the machining space, resulting in a large amount of mist. The temperature was rising as time went on. As a result, high-temperature process exhaust containing a large amount of mist is discharged into the factory from the processing machines, and the air inside the factory is polluted by fine particles contained in this process exhaust, deteriorating the environment. For this reason, a mist collector for collecting fine particles in the air has been provided in the factory to remove the mist and the like. However, since the processing exhaust gas from the processing machine diffuses widely in the factory, it has been necessary to install many mist collectors in order to purify the entire air in the factory. In addition, although the mist collector can remove the mist that is sucked in, it cannot lower the temperature of the sucked air, so the air that is still at a high temperature is released into the factory from the mist collector.

Furthermore, with the increase in processing speed and high-precision processing, the load applied to the control panel of mechanical equipment such as a processing machine increases, and the amount of heat generated in the control panel increases. At this time, if the temperature in the factory is rising, it becomes difficult to lower the temperature of the control panel. Then, when the temperature of the control panel becomes too high, a high temperature abnormality occurs in the semiconductor, and the operation of the mechanical equipment stops due to the detection of the trouble abnormality. There was a problem that so-called short stoppages occurred frequently and productivity decreased.

The heat from the air-cooled temperature controller and mist collector as described above is 47% of the heat from the air-cooled temperature controller and 28% from the mist collector for the heat generation factor in the entire factory. I found out.

Furthermore, the processing exhaust discharged from the processing machine into the factory not only raises the temperature in the factory, but also poses the following problems. First, if the working exhaust is diffused (filled) in the factory, the workers working in the factory are exposed to the cutting fluid mist contained in the working exhaust. It is said that exposure to mist causes disorders such as inflammation and malignant tumors in the skin and respiratory organs of workers, and long-term exposure causes skin cancer and the like. In addition, since process exhaust contains dust such as chemical substances, organic substances, metals, etc., if workers inhale such dust, acute hypersensitivity pneumonitis due to allergic reactions, tungsten, cobalt, nickel, etc. Lung lesions due to cemented carbide (including cemented carbide lung), etc. are said to occur. Since there is a risk of adversely affecting the health of workers in this way, there has been a demand for a clean environment within the factory.

Therefore, it is conceivable to increase the air conditioning equipment to lower the temperature in the factory and increase the number of mist collectors to purify the air in the factory. However, if the process exhaust is discharged from the processing machine into the factory, the process exhaust diffuses widely in the factory as described above, so fine particles including mist contained in the process exhaust can be generated by air-cooling temperature controllers and air conditioners. There is a problem that the particulate matter adheres to the filter of the equipment and accumulates in the filter, causing clogging, increasing the load on the air-cooled temperature controller and the air conditioning equipment, and reducing the cooling efficiency. In addition, there is a problem that the enhancement of air conditioning equipment goes against the demand for energy saving.

Therefore, in view of the above-described circumstances, the present invention provides a factory environment improvement system that can improve the working environment by suppressing the temperature rise in the factory while reducing the burden of air conditioning and promoting energy saving, and a system for improving the working environment in the factory. The object is to provide a method for improving the environment.

In order to solve the above problems, the factory environment improvement system according to the present invention includes:
"A processing machine that is installed in a factory and whose processing space is surrounded by a cover,
an air purifier integrally provided with an air purifier that sucks and purifies air from an air inlet, and an air cooler that cools the purified air purified by the air purifier;
a suction duct that connects the inside of the machining space and the air inlet, and causes the air purifier to suck and purify the machining exhaust containing the mist of the cutting fluid in the machining space;
An air intake for taking in air for cooling the refrigerant, and an air outlet for discharging the air that has cooled the refrigerant into the factory. and an air-cooled temperature controller into which purified cooling air is introduced."

In the factory environment improvement system of this configuration, first, the processing exhaust containing cutting fluid mist in the processing space of the processing machine is sucked through the suction duct to the air purification unit of the air cleaner, and the processing exhaust is discharged by the air purification unit. After removing and purifying the fine particles contained in the air, it is cooled by the air cooling unit. As a result, the processing exhaust from the processing machine is not discharged into the factory, and the processing exhaust does not diffuse within the factory and pollute the air inside the factory. No increase in temperature. In addition, since the purified cooling air generated by purifying and cooling the processed exhaust gas with an air purifier is introduced into the air intake port of the air-cooled temperature controller, fine particles contained in the processed exhaust gas are removed from the air-cooled temperature controller. It does not adhere, and it is possible to suppress an increase in the load on the air-cooled temperature controller and improve the thermal efficiency. Furthermore, the air discharge port of the air-cooling temperature controller can discharge clean exhaust air with a lower temperature than before into the factory, thereby suppressing the temperature rise in the factory.

In this way, since temperature rise and air pollution in the factory can be suppressed, there is no need to install additional air conditioners and mist collectors, and energy saving can be promoted, and the work environment in the factory can be improved. can be done. In addition, since the temperature rise in the factory can be suppressed, it is possible to process the workpiece at a temperature close to normal temperature in the processing machine, and it is possible to reduce the variation in processing accuracy during normal temperature inspection. In addition, since it is possible to suppress the temperature rise in the factory, it is possible to suppress the temperature rise in the control panel and reduce short stoppages due to high temperature abnormalities.

In addition to the above configuration, the factory environment improvement system according to the present invention includes:
"A cutting fluid tank that collects and stores the cutting fluid from the processing machine, purifies it, and supplies the purified cutting fluid to the processing machine,
The air-cooled temperature controller adjusts the temperature of the cutting fluid stored in the cutting fluid tank."

According to this configuration, since the cutting fluid stored in the cutting fluid tank is cooled by the air-cooling temperature controller and the temperature-controlled cutting fluid is supplied to the processing machine, the cutting fluid collected from the processing machine It is possible to reduce the temperature of the liquid and the temperature of the process exhaust, and to suppress the temperature rise in the factory. In addition, since the temperature-controlled cutting fluid is supplied to the processing machine, the workpiece can be reliably processed in the processing machine at a temperature close to room temperature, and variations in processing accuracy can be reduced.

The method for improving the environment in a factory according to the present invention includes:
"A processing machine that is installed in a factory and whose processing space is surrounded by a cover,
an air purifier integrally provided with an air purifier that sucks and purifies air from an air inlet, and an air cooler that cools the purified air purified by the air purifier;
a suction duct connecting the inside of the machining space and the air inlet;
An air-cooled temperature controller having an air intake for taking in air for cooling the refrigerant and an air outlet for discharging the air that has cooled the refrigerant into the factory,
The air purifier purifies the machining exhaust containing the mist of the cutting fluid in the machining space through the suction duct and cools it to generate purified cooling air, and the purified cooling air is supplied to the air-cooled temperature controller. Let it be introduced into the air intake.”
It is characterized by

According to the factory environment improvement method of this configuration, it is possible to achieve the same effect as the above-described factory environment improvement system.

As described above, the effects of the present invention include a factory environment improvement system capable of improving the working environment by suppressing temperature rise in the factory while reducing air conditioning load and promoting energy saving, and the factory environment. Can provide improvement methods.

1(a) is a perspective view showing a schematic configuration of an in-factory environment improvement system according to an embodiment of the present invention, and (b) is a perspective view showing the in-factory environment improvement system of (a) from another direction. . FIG. 2 is an explanatory diagram showing a cross-section of the configuration of an air purifier in the in-factory environment improvement system of FIG. 1 ; FIG. 3 is a cross-sectional view of an intake fan in the air purifier of FIG. 2; 2 is an explanatory view schematically showing an air-cooled temperature controller and a cutting fluid tank in the factory environment improvement system of FIG. 1; FIG.

DETAILED DESCRIPTION OF THE INVENTION A factory environment improvement system and a factory environment improvement method according to an embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 4. FIG. The factory environment improvement system of this embodiment is for improving the work environment in the factory. Note that FIG. 1 omits a cleaning fluid pipe 26 and a cutting fluid pipe 52, which will be described later.

The factory environment improvement system of the present embodiment includes a processing machine 10 provided in a factory and having a processing space 11 surrounded by a cover 12, an air purifier 20 capable of purifying and cooling air, and processing A suction duct 30 connecting the machine 10 and the air purifier 20, and an air cooling temperature controller 40 for adjusting the temperature of the cutting fluid C supplied to the processing machine 10 are provided.

In addition, the factory environment improvement system includes a cutting fluid tank 50 storing cutting fluid C circulating between the processing machine 10 and an air-cooling temperature controller that circulates purified cooling air purified and cooled by the air purifier 20. 40, etc., a control panel 70 for controlling the processing machine 10, and a spot cooler 80 capable of discharging cold air.

The processing machine 10 is a cutting machine such as a milling machine, a lathe, or a machining center. A machining space 11 of the machine 10 is a space where a workpiece to be machined is cut by a cutting tool such as an end mill. A base end of a suction duct 30 is connected to the processing space 11 . In the machining space 11, the cutting fluid C is supplied to the machining portion of the workpiece, and the cutting fluid C for cleaning is supplied to flush chips generated by cutting. The chips are sent to a chip conveyor (not shown) together with the cutting fluid C, and the cutting fluid C sent to the chip conveyor is collected in the cutting fluid tank 50 .

As shown in FIG. 2, the air purifier 20 is integrally provided with an air purifier 21 that sucks and purifies air, and an air cooler 22 that cools the purified air purified by the air purifier 21. ing. The air cleaner 20 also includes an intake fan 23 for sucking air and a motor 24 for rotating the intake fan 23 . The intake fan 23 and the motor 24 are provided in the air cleaning section 21 . Furthermore, the air cleaner 20 includes a cooling water pipe 25 passing through the air cooling unit 22, a cleaning liquid pipe 26 through which a cleaning liquid for cleaning the inside flows, and a receiving tray provided below the air cleaning unit 21 for receiving the cleaning liquid. A portion 27 and a drain pipe 28 for discharging the cleaning liquid in the receiving portion 27 are provided.

The air purification unit 21 includes a box-shaped purification unit casing 21a, a partition wall portion 21d that divides the inside of the purification unit casing 21a into a first chamber 21b and a second chamber 21c, and a first chamber in the purification unit casing 21a. 21b, and a purified air outlet 21f, which is open at the upper surface of the second chamber 21c of the purifier casing 21a. The air purifier 21 also includes a through hole 21g penetrating through the partition wall 21d, a first filter 21h provided in a first chamber 21b in the purifier casing 21a so as to surround the through hole 21g, and a second filter 21i provided to close the through hole 21g. Furthermore, the air purifying unit 21 includes a motor bracket 21j provided in a second chamber 21c in the purifying unit casing 21a and having a space for accommodating the intake fan 23 and a motor bracket 21j to which the motor 24 is attached. 21j, and a plurality of drainage ports 21l that are open on the lower surface of the purifier casing 21a for discharging the cleaning liquid to the receiving tray 27. As shown in FIG.

The other end of a suction duct 30 is connected to the intake port 21e of the air purifier 21, and the inside of the processing space 11 of the processing machine 10 and the first chamber 21b are communicated through the suction duct 30. FIG. The purified air outlet 21f communicates with a purified air intake 22b in the air cooling section 22, which will be described later.

The through-hole 21g opens circularly near the center of the partition wall portion 21d. The first filter 21h is formed in a cylindrical shape with a bottom made of a wire mesh with a relatively fine mesh. The second filter 21i is formed of a wire mesh with a coarser mesh than the first filter 21h. The motor bracket 21j is mounted inside the purifier casing 21a with the space accommodating the intake fan 23 directed toward the partition wall 21d.

The air cooling unit 22 includes a box-shaped cooling unit casing 22a, a purified air intake port 22b opening at the lower surface of the cooling unit casing 22a, and a purified cooling air outlet 22c opening at the side surface of the cooling unit casing 22a. and a heat exchange section 22d provided in the cooling section casing 22a.

The cooling section casing 22a is attached to the upper surface of the purification section casing 21a so that the purified air intake port 22b is aligned with the purified air outlet port 21f. The purified cooling air discharge port 22c is provided on the side surface on the back side of the paper surface in FIG. A cooling water pipe 25 passes through the inside of the heat exchange portion 22d.

The intake fan 23 has an annular front plate 23a, a disk-shaped rear plate 23b, a plurality of fins 23c attached between the front plate 23a and the rear plate 23b, and a plurality of fins 23c. and a plurality of capture wires 23d. The annular front plate 23a has an inner diameter substantially the same as the inner diameter of the through hole 21g. As shown in FIG. 3, the plurality of fins 23c are attached at regular intervals around the rotational axis of the intake fan 23 and extend outward from the center of the intake fan 23 in an arc shape. . The catching wires 23d are planted like brushes at intervals on the arc-shaped convex surface of the fin 23c. The length of the catching wire 23d is shortened as it approaches the center of the intake fan 23 in accordance with the interval between adjacent fins 23c. The intake fan 23 is attached to the rotary shaft of the motor 24 with the front plate 23a directed toward the partition wall portion 21d, and the rotary shaft center coincides with the through-hole 21g.

The motor 24 is attached to the motor bracket 21j so that the rotating shaft protrudes toward the partition wall portion 21d.

Although detailed illustration is omitted, the cooling water pipe 25 enters the heat exchanging portion 22d from the lower portion, extends upward while meandering inside the heat exchanging portion 22d, and then exits from the upper portion of the heat exchanging portion 22d. It is provided so as to extend in the direction.

As shown in FIG. 2, the cleaning liquid pipe 26 is branched into two outside the air purifier 20, one of which extends into the first chamber 21b of the air purifier 21, and the other of which extends into the air cooling chamber 21b. It extends into portion 22 . A cleaning liquid pipe 26 in the first chamber 21b extends around the outer circumference of the first filter 21h, and a plurality of nozzles 26a are attached toward the first filter 21h. A cleaning liquid pipe 26 in the air cooling section 22 extends across the outside of the heat exchanging section 22d, and a plurality of nozzles 26a are attached toward the heat exchanging section 22d. By spraying the cleaning liquid from each nozzle 26a of the cleaning liquid pipe 26, the first filter 21h and the heat exchange section 22d can be cleaned.

The saucer portion 27 is attached to the lower surface of the purifier casing 21a so as to cover the plurality of drain ports 21l from below. The drain pipe 28 extends from the lower part of the receiving plate 27 and the lower part of the cooling part casing 22 a and then merges and is connected to the cutting fluid tank 50 . The air purifier 20 is provided at a position higher than the cutting fluid tank 50 , and the waste fluid naturally flows down to the cutting fluid tank 50 through the drain pipe 28 .

Although not shown in detail, the air-cooled temperature controller 40 includes a refrigerant passage through which refrigerant circulates, a compressor provided in the refrigerant passage for compressing the refrigerant, and a compressor for air-cooling the refrigerant compressed by the compressor. A condenser and a heat exchanger for cooling the cutting fluid with a coolant cooled by the condenser are provided. The air-cooled temperature controller 40 includes an air intake port 41 for taking in air for cooling the refrigerant, a fan for sending the air taken in from the air intake port 41 to the condenser, and the air cooled by the refrigerant in the condenser. and an air outlet 42 for discharging.

The air-cooling temperature controller 40 is attached to the cutting fluid tank 50, and has an air intake port 41 opening on the side surface above the cutting fluid tank 50, and an air discharge port 42 opening on the top surface ( See Figure 4). The air-cooled temperature controller 40 has a heat exchanger portion immersed in the cutting fluid C stored in the cutting fluid tank 50 .

The cutting fluid tank 50 , as shown in FIG. 4 , includes a tank body 51 that stores the cutting fluid C, and a cutting fluid pipe 52 that circulates the cutting fluid C between the cutting fluid C and the processing machine 10 . The tank main body 51 has a first tank 51a and a second tank 51b whose bottom portions are in communication with each other, and a third tank 51c which is not in communication with the first tank 51a and the second tank 51b. A downstream end of a drain pipe 28 extending from the air cleaner 20 is connected to the first tank 51a. The third tank 51c is provided at a location far from the first tank 51a with the second tank 51b therebetween, and is formed so that overflowed cutting fluid C flows to the second tank 51b. A heat exchanger portion of the air-cooled temperature controller 40 is inserted into the third tank 51c.

The cutting fluid pipe 52 includes a return pipe 52a for sending the cutting fluid C discharged from the processing machine 10 to the first tank 51a, and a cutting fluid C in the second tank 51b for sending the cutting fluid C to the machining part of the workpiece in the processing machine 10. a first feed pipe 52b for feeding the cutting fluid C in the second tank 51b to the processing machine 10 for washing chips; and a third feed pipe 52d for feeding to the third tank 51c. The transmission pipes extending from the second tank 51b are arranged in the order of the second transmission pipe 52c, the first transmission pipe 52b, and the third transmission pipe 52d in order from the first tank 51a.

The cutting fluid tank 50 includes a first pump 53 for sending the cutting fluid C in the second tank 51b to the processing machine 10 through the first sending pipe 52b, and a cutting fluid C in the second tank 51b through the second sending pipe 52c. A second pump 54 for sending the liquid C to the processing machine 10, and a third pump 55 for sending the cutting liquid C in the second tank 51b to the third tank 51c through the third sending pipe 52d. . In addition, the third pump 55 is smaller than the first pump 53 and the second pump 54 .

As shown in FIG. 1, the cold air duct 60 includes a duct main pipe 61 communicating with the purified cooling air outlet 22c of the air cleaner 20, a plurality of duct branch pipes 62 branching from the duct main pipe 61, A damper 63 is provided in each duct branch pipe 62 and is capable of adjusting the flow rate of air (cold air) to be circulated. The duct main pipe 61 is provided at a height (for example, 2.5 m to 3 m) that does not come into contact with workers in the factory.

The duct branch pipes 62 include a first branch pipe 62a extending to the air-cooled temperature controller 40, a second branch pipe 62b extending to the control panel 70, and a third branch pipe 62c extending toward the spot cooler 80. , and a fourth branch pipe 62d having an outlet 64 at its tip. The first branch pipe 62a spreads so that the tip thereof covers the air intake port 41 of the air-cooled temperature controller 40 from the outside. Purified cooling air from the air purifier 20 is sent to the air intake port 41 of the air-cooled temperature controller 40 through the first branch pipe 62a. The tip of the second branch pipe 62b is connected to the control panel 70, and purified cooling air is sent into the control panel 70 through the second branch pipe 62b. The tip opening of the third branch pipe 62c faces an air intake port of the spot cooler 80, which will be described later, and purified cooling air is sent to the air intake port of the spot cooler 80 through the third branch pipe 62c. The fourth branch pipe 62d can blow purified cooling air into the factory from a blowout port 64 provided at its tip.

The spot cooler 80 is a movable small air conditioner having a refrigerant circuit in which refrigerant circulates. The spot cooler 80 has an air outlet 81 for blowing air cooled by the heat exchanger on the refrigerant circuit, an air inlet (not shown) for sending air to the condenser on the refrigerant circuit, and air warmed by the condenser. and an exhaust port 82 for discharging the

Next, the environment improvement in the factory by the factory environment improvement system of this embodiment will be described. In the processing machine 10, when the work is processed at high speed in the processing space 11, the amount of heat generated at the processing portion increases, so the temperature of the cutting fluid C supplied to the portion increases, and the temperature rises together with the chips. (eg, 40° C. to 50° C.) dirty cutting fluid C is discharged from the processing machine 10 . In addition, as the machining speed of the workpiece is increased, the discharge pressure of the cutting fluid C supplied to the machining site must be increased. As a result, machining exhaust gas containing a large amount of mist of the cutting fluid C and having a temperature higher than the room temperature (for example, 35° C. to 40° C.) is generated.

In the air cleaner 20, when the motor 24 is driven to rotate the intake fan 23, the air between the plurality of fins 23c of the intake fan 23 is blown outward by centrifugal force, and the central side of the intake fan 23 is under negative pressure. become. At this time, since the opening of the front plate 23a of the intake fan 23 faces the through hole 21g passing through the partition wall portion 21d, the air in the first chamber 21b is sucked into the intake fan 23 through the through hole 21g. be Since the first chamber 21b communicates with the processing space 11 of the processing machine 10 through the suction duct 30, the processing exhaust generated in the processing space 11 passes through the suction duct 30 to the air purification unit 21. It is sucked into the first chamber 21b of the casing 21a.

The processed exhaust sucked into the first chamber 21b passes through the first filter 21h and the second filter 21i and is sucked into the intake fan 23 from the central opening of the front plate 23a. At this time, most of the fine particles including mist contained in the process exhaust are captured and removed by the first filter 21h and the second filter 21i. The processed exhaust sucked into the intake fan 23 is discharged radially outward of the intake fan 23 through the space between the plurality of fins 23c. At this time, the fine particles that have passed through the first filter 21h and the second filter 21i are captured and removed by a large number of capturing wires 23d implanted in the plurality of fins 23c. The centrifugal force of the rotating intake fan 23 removes the mist of the cutting fluid C by coming into contact with the inner wall of the space in which the intake fan 23 is accommodated. Furthermore, between the fins 23c, the flow speed of the air (machining exhaust gas) increases and the temperature decreases, so the vaporized liquid (water vapor of the cutting fluid C) contained in the machining exhaust gas condenses to form a liquid. and water vapor is removed.

In this manner, the processed exhaust gas is purified by passing through the first filter 21h, the second filter 21i, and the intake fan 23 (innumerable trapping wires 23d) of the air purification unit 21 to generate purified air. Further, the cutting fluid C trapped in the first filter 21h and the second filter 21i and the cutting fluid C in contact with the inner wall of the space in which the intake fan 23 is accommodated flow down to the purifier casing 21a. It is received by the receiving tray 27 through the drain port 21l on the lower surface of the cutting fluid, and sent to the first tank 51a of the cutting fluid tank 50 through the drain pipe 28.

The purified air discharged from the intake fan 23 passes through the through hole 21k of the motor bracket 21j and the second chamber 21c, passes through the purified air intake port 22b facing the purified air discharge port 21f, and cools the air cooling unit 22. It enters the inner casing 22a and is sent to the heat exchange section 22d. In the heat exchange section 22d of the air cooling section 22, the cooling water pipe 25 passing through the interior is circulated with cooling water at around 20°C between 17°C and 23°C. The temperature can be reduced by 8°C to 12°C. In this embodiment, the cooling water flowing through the cooling water pipe 25 flows so as to enter the heat exchanging portion 22d from the lower portion and exit from the upper portion. Further, as the cooling water, underground water, water cooled by a cooling tower, or the like can be used.

Further, when the purified air passes through the heat exchanging portion 22d, the vaporized liquid such as cutting fluid C contained in the purified air condenses in the heat exchanging portion 22d, and the vaporized liquid such as water vapor of the cutting fluid C condenses in the heat exchanging portion 22d. is further removed. The liquid condensed in the heat exchange section 22 d flows downward and is sent from the bottom of the cooling section casing 22 a to the first tank 51 a of the cutting fluid tank 50 through the drain pipe 28 .

In this manner, the air cooling unit 22 can further purify the purified air generated by the air purifying unit 21 and then cool it to generate purified cooling air. Therefore, the air purifier 20 can suck, purify, and cool the processing exhaust gas from the processing machine 10 before it is discharged into the factory, and can suppress the temperature rise in the factory due to the processing exhaust gas. The purified cooling air generated in the air purifier 20 is sent from the purified cooling air outlet 22c of the cooling part casing 22a into the duct main pipe 61 of the cold air duct 60, and from the duct main pipe 61 to each of the duct branch pipes 62. is sent to the air-cooled temperature controller 40, the control panel 70, etc.

In the air cleaner 20 of the present embodiment, the cleaning liquid is injected from the plurality of nozzles 26a through the cleaning liquid pipe 26 to the first filter 21h and the heat exchange section 22d at regular intervals, and adheres to the first filter 21h and the heat exchange section 22d. dirt is washed away. After washing, the waste liquid flows down to the receiving pan 27 below the cleaning section casing 21 a and the bottom of the cooling section casing 22 a, and is sent to the first tank 51 a of the cutting liquid tank 50 through the drain pipe 28 . Groundwater, industrial water, clean cutting fluid C stored in the second tank 51b and the third tank 51c, cooling water used in the heat exchange section 22d, and the like can be used as the cleaning fluid.

In addition, as described above, the air purifier 20 can also remove the water vapor of the cutting fluid C contained in the process exhaust, so it has the following advantages. To be more specific, if the processing machine 10 is of a type that cleans the work to be processed with hot water (eg, cutting fluid C with a high temperature), it is compared to a type that cleans with water at room temperature (eg, cutting fluid C at room temperature). By doing so, the workpiece can be cleaned in a short time. When hot water is used to wash the workpiece, water vapor is discharged from the processing machine and can enter the factory. Therefore, installation of the duct requires large-scale construction, and when the layout of the factory is changed, the duct also needs to be installed again, which is troublesome and time-consuming. On the other hand, since the air cleaner 20 of the present embodiment can also remove water vapor, by sucking the water vapor from the processing machine 10 through the suction duct 30 together with the processing exhaust gas, the water vapor does not rise in the factory. , there is no need to install a duct to exhaust water vapor to the outside. Therefore, it is possible to reduce the cost of installing a duct for discharging water vapor. The water vapor removed by the air purifier 20 turns into a liquid, passes through the drain pipe 28, is collected in the cutting fluid tank 50, is purified, and is used again for cleaning and the like.

On the other hand, the high-temperature dirty cutting fluid C discharged from the processing machine 10 together with the chips is removed by a chip conveyor (not shown) and then flows through the return pipe 52a into the cutting fluid tank 50. It is sent to one tank 51a. As a result, high-temperature dirty cutting fluid C is stored in the first tank 51a. In addition, the first tank 51a stores the liquid discharged from the air cleaner 20 through the drain pipe 28. As shown in FIG. In the first tank 51a, impurities with low specific gravity contained in the dirty cutting fluid C float and accumulate near the surface of the water. Since the bottom of the first tank 51a communicates with the second tank 51b, clean cutting fluid C from which impurities have been removed flows into the second tank 51b through the bottom. As a result, clean cutting fluid C is stored in the second tank 51b.

The clean cutting fluid C stored in the second tank 51b is sent by the third pump 55 to the third tank 51c and stored therein. Since the heat exchanger portion of the air-cooled temperature controller 40 is inserted into the third tank 51c, the cutting fluid C in the third tank 51c is cooled by the air-cooled temperature controller 40 to a temperature lower than normal temperature (for example, 15 ° C to 23 ° C). Then, when the cutting fluid C is sent by the third pump 55 and the third tank 51c becomes full, the cooled and clean cutting fluid C overflows and flows into the second tank 51b, and the cooled cutting fluid C overflows. The cutting fluid C lowers the temperature of the cutting fluid C in the second tank 51b. Therefore, in this embodiment, the temperature of the cutting fluid C in the second tank 51b is adjusted by controlling the feeding amount of the cutting fluid C by the third pump 55 to the third tank 51c.

Since the second tank 51b is provided between the first tank 51a and the third tank 51c, the temperature of the cutting fluid C stored in the second tank 51b is normal temperature as it approaches the first tank 51a. and lower than room temperature as it approaches the third tank 51c. In this embodiment, in the second tank 51b, a second feed pipe 52c, a first feed pipe 52b, and a third feed pipe 52d are arranged in order from the first tank 51a. Therefore, the cutting fluid C at a temperature close to room temperature (for example, 23° C. to 27° C.) stored near the center of the second tank 51b is pumped up by the first pump 53 through the first feed pipe 52b, It is supplied to the processing site of the processing machine 10 . As a result, the workpiece can be processed in a state close to room temperature in the processing portion of the processing machine 10, and variations in processing accuracy can be reduced.

On the other hand, the cutting fluid C at a temperature higher than normal temperature (for example, 37° C. to 43° C.) stored near the first tank 51a in the second tank 51b flows through the second pump 54 through the second feed pipe 52c. and is supplied to the processing machine 10 as a cleaning liquid for flushing chips. In this embodiment, the cleaning liquid having a temperature higher than room temperature is supplied to the processing machine 10. However, since the cleaning liquid does not have a thermal effect on the workpiece or the part to be processed, the machining accuracy of the workpiece may be deteriorated. no. Therefore, it is not necessary to cool the entire cutting fluid C in the second tank 51b to room temperature, and the load on the air-cooled temperature controller 40 can be reduced.

In the cutting fluid tank 50, in the air cooling temperature controller 40 that cools the cutting fluid C in the third tank 51c, the air intake port 41 that takes in the air for cooling the refrigerant is connected to the duct branch pipe 62 of the cold air duct 60. The opening at the tip of the first branch pipe 62a faces each other. As a result, the purified cooling air sent from the air purifier 20 through the cold air duct 60 is introduced from the air intake port 41, heated by cooling the refrigerant in the condenser, and then discharged into the factory from the air discharge port 42. be done. At this time, since the cooled purified cooling air passes through the condenser of the air-cooled temperature controller 40, the temperature of the exhaust gas discharged from the air discharge port 42 through the condenser becomes lower than before. Therefore, the temperature of the exhaust gas discharged from the air-cooled temperature controller 40 into the factory can be lowered by 8° C. to 12° C. as compared with the conventional one, and the temperature rise in the factory can be suppressed. load can be reduced.

By the way, in the factory environment improvement system of the present embodiment, the purified cooling air supplied from the air purifier 20 to the cold air duct 60 is supplied to the air-cooled temperature controller 40 through the first branch pipe 62a, and in addition to the second branch pipe 62b. can be supplied to the control panel 70 through the air, and the inside of the control panel 70 can be cooled. It is also possible to supply the purified cooling air to the intake port of the spot cooler 80 through the third branch pipe 62c, so that the load on the spot cooler 80 can be reduced. Furthermore, purified cooling air can be blown into the factory from the outlet 64 at the tip through the fourth branch pipe 62d, so that the factory can be cooled.

The dampers 63 provided in the respective duct branch pipes 62 are operated automatically or manually according to the respective temperatures in the air cooling temperature controller 40, the control panel 70, the spot cooler 80, the inside of the factory, etc. You may make it adjust the flow volume of air.

As described above, according to the factory environment improvement system of the present embodiment, the machining exhaust containing the mist of the cutting fluid C in the machining space 11 of the machining machine 10 is passed through the suction duct 30 to the air purifier of the air cleaner 20. 21 , the process exhaust is purified by removing fine particles contained in the process exhaust by the air purification unit 21 , and then cooled by the air cooling unit 22 . As a result, the processing exhaust from the processing machine 10 is not discharged into the factory, and the heat of the processing exhaust does not increase the temperature in the factory. In addition, since the processing exhaust from the processing machine 10 is not discharged into the factory, the processing exhaust does not diffuse in the factory and pollute the air in the factory, and the factory can be made into a clean working environment. , the effect of mist and dust from the process exhaust on the health of workers can be reduced.

Since the purified cooling air generated by purifying and cooling the processed exhaust gas by the air purifier 20 is introduced into the air intake port 41 of the air-cooled temperature controller 40 through the cold air duct 60, Fine particles contained in the process exhaust will not adhere, and an increase in the load on the air-cooled temperature controller 40 can be suppressed to improve thermal efficiency. Furthermore, from the air discharge port 42 of the air-cooling temperature controller 40, clean exhaust air with a lower temperature than before can be discharged into the factory ^. Emissions can be reduced.

In addition, since the purified cooling air from the air purifier 20 is supplied to the control panel 70 via the cold air duct 60, it is possible to suppress the occurrence of abnormal high temperature of the semiconductor in the control panel 70, and the chocolate due to the high temperature abnormality can be suppressed. It is possible to reduce stoppages and improve production efficiency. Also, the heat emitted from the control panel 70 into the factory can be reduced more than before.

In addition, since the purified cooling air from the air purifier 20 is supplied to the air inlet of the spot cooler 80 through the cold air duct 60, the temperature of the exhaust air discharged into the factory from the air outlet 82 of the spot cooler 80 is can be lowered, and the temperature rise in the factory can be suppressed.

Furthermore, as described above, since it is possible to suppress the temperature rise and air pollution in the factory, there is no need to install additional air conditioning equipment and mist collectors, and energy saving can be promoted, and the work environment in the factory can be improved. can be improved. In addition, since air pollution in the factory can be suppressed, clogging of filters provided in air conditioning equipment, air cooling temperature controller 40, spot cooler 80, etc. can be reduced, and the load and The running cost can be reduced and the energy saving effect can be demonstrated.

In addition, the temperature rise in the factory can be suppressed, and since the cutting fluid C cooled to room temperature is supplied to the machining site, the workpiece can be machined at a temperature close to room temperature in the processing machine 10. , it is possible to reduce variations in processing accuracy during normal temperature inspection and improve productivity.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to the above embodiments, and various improvements and design changes are possible without departing from the scope of the present invention. is.

For example, in the above embodiment, the processing exhaust from one processing machine 10 is purified and cooled by one air purifier 20. The processing exhaust gas may be purified and cooled by one air cleaner 20 , or the processing exhaust gas from one processing machine 10 may be purified and cooled by a plurality of air cleaners 20 .

Further, in the above embodiment, the purified cooling air is supplied to one air-cooled temperature controller 40 through the cool air duct 60, but it may be supplied to a plurality of air-cooled temperature controllers 40. FIG. Also, purified cooling air may be supplied to a plurality of control panels 70 and a plurality of spot coolers 80 through the cool air duct 60 . Also, the cold air duct 60 may be provided with a plurality of fourth branch pipes 62d and outlets 64 to blow out purified cooling air from a plurality of locations into the factory.

Furthermore, in the above-described embodiment, as the cooling water supplied to the air cooling unit 22 of the air cleaner 20, ground water or water cooled by a cooling tower is used, but the present invention is not limited to this. Instead, the cooled and clean cutting fluid C in the cutting fluid tank 50 may be used as cooling water. As a result, there is no need to provide a facility for pumping up groundwater, a cooling tower, etc., and only piping between the air cleaner 20 and the cutting fluid tank 50 is required, reducing the cost of the factory environment system of this embodiment. can be made

In the above embodiment, the cutting fluid C in the cutting fluid tank 50 is cooled only by the air-cooled temperature controller 40. However, it is not limited to this. 22 (heat exchanging portion 22 d ) may pass through the dirty cutting fluid C stored in the first tank 51 a of the cutting fluid tank 50 . As a result, the cooling water passes through the heat exchange part 22d and its temperature rises, but since it is lower than the temperature of the dirty cutting fluid C from the processing machine 10, the temperature of the cutting fluid C can be lowered. The load on the air-cooled temperature controller 40 can be reduced.

Furthermore, in the above-described embodiment, as the cutting fluid tanks 50, there are , and a tank (third tank 51c) for cooling the cutting fluid C, but it is not limited to this. Two tanks, one for supplying the cutting fluid C and the other for cooling the cutting fluid C, may be provided.

10 processing machine 11 processing space 12 cover 20 air purifier 21 air purifier 21e intake port 22 air cooling unit 30 suction duct 40 air-cooled temperature controller 41 air intake 42 air discharge port 50 cutting fluid tank 60 cold air duct C cutting fluid

Claims (3)

A processing machine provided in a factory and having a processing space surrounded by a cover;
an air purifier integrally provided with an air purifier that sucks and purifies air from an air inlet, and an air cooler that cools the purified air purified by the air purifier;
a suction duct that connects the inside of the machining space and the air inlet, and causes the air purifier to suck and purify the machining exhaust containing cutting fluid mist in the machining space;
It has an air intake for taking in air for cooling the refrigerant, and an air discharge for discharging the air that has cooled the refrigerant into the factory. and an air-cooled temperature controller into which purified cooling air is introduced. a cutting fluid tank that collects and stores the cutting fluid from the processing machine, purifies the cutting fluid, and supplies the purified cutting fluid to the processing machine;
2. The in-factory environment improvement system according to claim 1, wherein the air-cooled temperature controller controls the temperature of the cutting fluid stored in the cutting fluid tank. A processing machine provided in a factory and having a processing space surrounded by a cover;
an air purifier integrally provided with an air purifier that sucks and purifies air from an air inlet, and an air cooler that cools the purified air purified by the air purifier;
a suction duct connecting the inside of the machining space and the air inlet;
An air-cooled temperature controller having an air intake for taking in air for cooling the refrigerant and an air outlet for discharging the air that has cooled the refrigerant into the factory,
The air purifier purifies the machining exhaust containing the mist of the cutting fluid in the machining space through the suction duct and cools it to generate purified cooling air, and the purified cooling air is supplied to the air-cooled temperature controller. A method for improving an environment in a factory, characterized in that air is introduced into the air intake.

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