JP7315368B2 - Compressor and compressor management system - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor and a compressor management system, and more particularly to a compressor having a dryer for dehumidifying compressed air and a compressor management system.

Compressed gas generates condensed water when it becomes below the condensed water generating limit temperature. The condensed water causes rusting of pipes and parts inside the compressor, as well as bacteria and dirt. In addition, the amount of moisture contained in the compressed gas may cause similar problems to the equipment that uses the compressed air. In order to prevent this, it is common practice to dehumidify the compressed gas using a dryer.

The management of dryer failure is important in compressed gas operation, as it causes the above problems. Patent Literature 1 discloses a technique related to management of a compressed gas dehumidifier. Here, by providing a corroded test material in the discharge path of the condensed water discharged from the dehumidifier, the state of the condensed water is used to predict malfunction of the drying machine.

JP-A-2007-7540

However, in the management of the drying apparatus according to Patent Document 1, a person must monitor the state of the condensed water, and in addition, there is a problem that the judgment of the abnormality of the condensed water is dependent on the individual. In addition, since the detection is performed using the corrosion test material, there is also the problem that malfunctions other than corrosion or aging of the dryer cannot be detected. A technique for dynamically and accurately managing the operating state of the dryer is desired.

In order to solve the above-mentioned problems, for example, the configurations described in the claims are applied. a compressor body for compressing gas, a drive source for supplying driving force to the compressor body, a discharge piping system through which the compressed gas discharged by the compressor body 1 flows, a dryer connected to the discharge piping system to dehumidify the compressed gas, at least one of a first temperature sensor and a first pressure sensor arranged upstream of the dryer on the discharge piping system, at least one of a second temperature sensor and a second pressure sensor arranged on the downstream side of the dryer on the discharge piping system, and a control device. wherein the controller determines that the dryer is defective when the difference between the temperature value or pressure value detected by at least one of the first temperature sensor and the first pressure sensor and the temperature value or pressure value detected by at least one of the second temperature sensor and the second pressure sensor exceeds a predetermined range.

In still another configuration, a compressor having at least a main body for compressing gas, a driving source for supplying a driving force to the main body of the compressor, and a control device, a dryer connected to the compressor via a pipe and dehumidifying the discharged compressed gas, at least one of a first temperature sensor and a first pressure sensor arranged in an upstream pipe of the dryer, at least one of a second temperature sensor and a second pressure sensor arranged in a downstream pipe of the dryer, the compressor, the first temperature sensor and the first pressure sensor. A compressor management system comprising at least one pressure sensor, at least one of a second temperature sensor and a second pressure sensor arranged in a downstream pipe of the dryer, and a server device communicably connected via a wired or wireless communication line, wherein the server device determines that the dryer is defective when a difference between a temperature value or a pressure value detected by at least one of the first temperature sensor and the first pressure sensor and a temperature value or a pressure value detected by at least one of the second temperature sensor and the second pressure sensor exceeds a predetermined range. It is.

According to the present invention, the operating state of the dryer can be managed automatically and objectively.
Other problems, configurations, and effects of the present invention will become clear from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the structure of the compressor by Example 1 to which this invention is applied. FIG. 4 is a flowchart showing processing of the compressor according to Example 1; FIG. 2 is a schematic diagram showing the configuration of a compressor system according to Embodiment 2 to which the present invention is applied; FIG. 3 is a schematic diagram showing the configuration of a compressor system according to Embodiment 3 to which the present invention is applied;

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

FIG. 1 schematically shows the configuration of an oil-fed air compressor 100 (hereinafter sometimes referred to as "compressor 100") as one embodiment to which the present invention is applied. The compressor 100 is a package-type air compressor that mainly includes a compressor main body 1, a gas-liquid separator 5, a fan device 8, an air cooler 10, an oil cooler 11, an electric motor 15, an inverter 16, a control unit 17, various pressure sensors 20, 21, 22, 23, 24, temperature sensors 26, 27, and a dryer 29 that dehumidifies the discharged air (details will be described later).

The compressor main body 1 is assumed to be an oil-fed and screw-type compressor, but the present invention can be applied to a liquid-fed type using another liquid such as water, or a compressor of various compression types such as positive displacement type or rotary type.

When the compressor main body 1 receives rotational power from the electric motor 15 , it sucks air through the suction filter 2 and the suction throttle valve 3, compresses the air together with the oil supplied to the compression chamber by the screw rotor 4 , and discharges the gas-liquid mixed compressed air to the gas-liquid separator 5.

The gas-liquid separator 5 is a primary separator using an impingement type, a centrifugal type, or a combination thereof, and separates air and oil from the gas-liquid mixed compressed air discharged from the compressor main body 1 . The separated oil is stored at the bottom of the gas-liquid separator 5 and is returned to the compressor body 1 . The reflux path of the gas-liquid separator 5 is provided with a temperature control valve 12 and is branched into two systems by this. The temperature control valve 12 is a three-way valve, and when the temperature of the oil exceeds a predetermined temperature, it switches to open a flow path connected to the oil cooler, and when the temperature is below the predetermined temperature, it opens a flow path bypassing the oil cooler to maintain the oil within a predetermined temperature range.

The compressed air separated by the gas-liquid separator 5 flows into the discharge piping system, and flows through the secondary filter 6 and the pressure regulating valve 7 to the air cooler 10 . The secondary filter 6 is an oil filter having a filtering material such as non-woven fabric, and further removes oil from the compressed air that has been primarily separated from the oil. The pressure regulating valve 7 is a pressure regulating valve that opens at a predetermined pressure or higher. In this embodiment, a mechanical valve is used as the pressure regulating valve 7, but an electrical/electronic valve that responds to instructions from the control unit 17 or the like may be used.

The air cooler 10 is an air-cooled heat exchanger, and maintains the compressed air within a predetermined temperature range by exchanging heat with cooling air from the fan device 8 . The oil cooler 11 is also an air-cooled heat exchanger, and the oil is cooled by the cooling air from the fan device 8 . The fan device 8 is driven by an electric motor, and can control the generation of cooling air at a variable speed by an inverter in accordance with a command from a control section 17, which will be described later. By driving the fan device 8, outside air flows in from the suction port 41 of the housing 40, part of it is sucked into the compressor main body 1, and part of it cools the motor and the like, and is then discharged to the outside from the exhaust port 42 via the air cooler 10 and the oil cooler 11. In this embodiment, an air-cooled heat exchanger is used as a cooling device, but a liquid-cooled heat exchanger can also be used. In this case, the heat exchange performance is increased or decreased by changing the driving force of the pump device that conveys the liquid medium or by opening and closing the valve element on the piping route of the liquid medium.

The compressor 100 also includes a pressure sensor and a temperature sensor in the housing 40 and in the piping system. The pressure sensors include a pressure sensor 20 that detects the pressure inside the housing 40 near the suction port 41 of the housing 40, a pressure sensor 21 that is arranged on the suction side of the compressor body 1 (primary side of the suction throttle valve 3) and detects the suction pressure, a pressure sensor 22 (first pressure sensor) that is arranged in the gas-liquid separator 5 and detects the internal pressure, a pressure sensor 23 (first pressure sensor) that is arranged between the secondary filter 6 and the pressure regulating valve 7 on the air discharge pipe, and an air discharge pipe. A pressure sensor 24 (first pressure sensor) arranged downstream of the air cooler 10 and upstream of the dryer 29 above, and a temperature sensor 26 arranged on a discharge pipe downstream of the dryer heat exchanger 30 described later, and a temperature sensor 27 arranged in the gas-liquid separator 5 and detecting the internal temperature. These pressure sensors and temperature sensors are electrically connected to the controller 17 so as to be able to communicate with each other, and the controller 17 performs various operational controls based on the detected values .

The electric motor 15 is a driving source that supplies driving force to the compressor body 1 . In this embodiment, an electric motor that is driven by receiving power of a predetermined frequency from an inverter 16 is taken as an example, but the drive source in the present invention is not limited to this, and can be applied to an internal combustion engine, a steam engine, or an engine that uses natural energy such as wind power or water power.

The inverter 16 generates electric power with a predetermined frequency according to the frequency command from the control unit 17 and supplies the electric power to the electric motor 15 . In this embodiment, the compressor 100 is described as a variable-speed control compressor, but the present invention is not limited to this, and can also be applied to a fixed-speed, constant-speed control compressor.

The control unit 17 realizes various functional units through cooperation with, for example, an arithmetic device and a program, and controls the operation of the compressor 100 as a whole. A part of the control unit 17 may be composed of an analog circuit.

The control unit 17 also includes an external input/output unit that receives input of set pressure and various operating conditions. For example, when the control unit 17 receives a predetermined set pressure, it outputs a frequency command necessary for driving to the inverter 16 when the compressor body 1 is driven, and changes the frequency command value so as to achieve the predetermined set pressure based on the values detected by the pressure sensors 20, 21, 22, 23, and 24 and the temperature sensor 27, controls the rotation speed of the fan device 8, and controls various valve elements. In particular, this embodiment is characterized in that when a malfunction of the dryer 29, which will be described later, is detected, control is performed to increase the rotation speed of the fan device 8 and decrease the temperature of the compressed air flowing into the dryer 29.

Next, the configuration of the dryer 29 will be described. The dryer 29 is a refrigeration dryer mainly comprising a dryer heat exchanger 30 , a dryer condenser 31 , a fan device 32 , a dryer compressor 33 , an expander 34 , an auto drain pipe 35 and a manual drain pipe 36 . The dryer compressor 33 compresses the refrigerant, and the high-pressure, high-temperature refrigerant flows to the dryer condenser 31 . The dryer condenser 31 cools the refrigerant with the outside air flowing in from the dryer suction port arranged in the housing 40 by the fan device 32 (exhaust air is discharged from the dryer exhaust port 44 ). The cooled refrigerant is throttled by the expander 34 and flows to the dryer heat exchanger 30 . In the dryer heat exchanger 30, heat is exchanged between the compressed air precooled by the air cooler 10 and the refrigerant, and the dehumidified compressed air is supplied to the outside of the compressor 100 from the discharge piping system. Also, the drain generated in the dryer heat exchanger 30 is discharged to the outside of the compressor 100 through the auto drain pipe 35 . The manual drain pipe 36 is a spare pipe for discharging drain to the outside by opening and closing a manual valve (not shown). In addition, the configuration of the dryer 29 is not limited to the above, and may be a configuration of another freeze dryer.

The operation control of the dryer 29 is performed by the controller 17 . For example, the heat exchange performance of the dryer heat exchanger 30 is controlled by controlling the operations of the dryer compressor 33 and the fan device 32 .

Here, if dehumidification becomes insufficient due to a defect in the dryer 29, the compressed air with a large amount of moisture will flow to the destination of use of the compressed air (including the equipment of the demand destination). This not only affects the equipment and product quality of the users, but also causes contamination and corrosion inside the air pipes. Therefore, as one of the features of this embodiment, a temperature sensor 26 is provided in the discharge piping system from the dryer heat exchanger 30 to the outside of the compressor 100, and the detection values of this and the pressure sensors 22, 23, 24 (first pressure sensors) and the temperature sensor 27 (first temperature sensor) arranged upstream of the dryer heat exchanger 30 are monitored to detect malfunction of the dryer 29.

Specifically, when a malfunction of the dryer is detected from the detection value of the temperature sensor 26 and the detection values of some or all of the pressure sensors 22, 23, and 24, information indicating the correlation between the temperature of the compressed air after drying, the pressure at the positions where the pressure sensors 22, 23, and 24 are arranged, and the corresponding temperature is stored in advance in the control unit 17, and the malfunction of the dryer 29 is detected when these exceed predetermined threshold values. For example, when using the detection value of the pressure sensor 24 arranged downstream of the air cooler 10 and between the dryer heat exchanger 30, the temperature of the compressed air obtained by tests and experiments is stored in advance with respect to this pressure, and the compressed air temperature corresponding to the pressure detected by the pressure sensor 24 is compared with the temperature of the compressed air after passing through the dryer heat exchanger 30 detected by the temperature sensor 26, and when there is a predetermined temperature difference, the control unit 17 determines that the dryer is defective.

When the dryer 29 is determined to be defective, the controller 17 outputs a dryer abnormality signal to the alarm means. As an alarming means, in addition to visual, auditory, and tactile output from the display device, speaker, vibration device, etc. provided in the control unit 17, an alarm may be output from the communication I / F unit to a wired or wireless external device (stationary or portable terminal).

Further, as one of the features of this embodiment, when an abnormality (malfunction) of the dryer 29 is detected, the number of revolutions of the fan device 8 is increased to temporarily supercool the compressed air before flowing into the dryer 29, thereby reducing the load on the dryer 29 and compensating for the drying of the compressed air discharged from the compressor 100 to the outside. That is, the air cooler 10 cools the compressed air more, and the oil cooler 11 improves the oil cooling performance. Thereby, the operation of the compressor 100 can be continued to some extent.

Further, the supercooling operation of the fan device 8 is preferably continued until the temperature detected by the temperature sensor 26 arranged downstream of the dryer 29 is equal to or lower than the temperature when the dryer 29 is normal or within the allowable range based on this. If the malfunction of the dryer 29 is due to a temporary factor, the compressor 100 can be continued in normal operation.

A control flow of the compressor 100 having the above configuration will be described. FIG. 2 shows the control flow. In the following description, it is assumed that the detected values of the temperature sensor 26 arranged downstream of the dryer 29 and the pressure sensor 24 arranged downstream of the air cooler 10 are used. In addition, although the following processing may be performed when the compressor main body 1 starts to be driven, it is preferable to start after a predetermined time has elapsed (for example, after the time until the operation stabilizes or after the set pressure is detected).

In S<b>101 , the control unit 17 acquires the temperature detected by the temperature sensor 26 and the pressure value detected by the pressure sensor 24 .

In S103, the control unit 17 refers to the temperature corresponding to the pressure value detected by the pressure sensor 24 from the pressure-temperature correlation information, compares this with the temperature detected by the temperature sensor 26, and determines whether the temperature downstream of the dryer 29 is within the allowable range. If it is within the allowable range (S103: YES), the process returns to S101, and if it is not within the allowable range (S103: NO), the process proceeds to S105.

In S105, the control unit 17 outputs a signal indicating the abnormality of the dryer 29, and causes the display device or the like to notify.

In S107, the control unit 17 increases the rotation speed of the fan device 8 (for example, outputs a command value for increasing the output frequency to the inverter of the fan device 8, or outputs a signal for increasing the power supplied to the fan device 8, etc.), and starts supercooling of the compressed air.

In S109, the control unit 17 acquires the temperature detected by the temperature sensor 26 and the pressure detected by the pressure sensor 24, and determines whether the temperature downstream of the dryer 29 is within the allowable range. If it is not within the allowable range (S109: NO), the acquisition and judgment of the sensor detected value are repeated until it is within the allowable range ( that is, the supercooling process is continued ) . On the other hand, if it is within the allowable range (S109: YES), the process proceeds to S111, the rotation speed of the fan device 8 is set to the normal rotation speed, and the supercooling process ends.

Thereafter, in S113, after a predetermined time has elapsed, the detection values of the pressure sensor 24 and the temperature sensor 26 are obtained again, and it is determined whether or not the temperature downstream of the dryer 29 is within the allowable range. If it is not within the allowable range (S113: NO), the process returns to S107 to restart the supercooling process. On the other hand, if it is within the allowable range (S113: YES), the process proceeds to S115, stops issuing the abnormality alarm for the dryer 29, and returns to the beginning of the processing flow again.

As described above, according to this embodiment, malfunction of the dryer 29 can be accurately detected by the pressure sensor 24 and the temperature sensor 26 arranged at the inlet/outlet of the air passing through the dryer 29 .

Further, when a malfunction of the dryer 29 is detected, the abnormality is reported and the supercooling process of the compressed air is performed, so that the operation of the compressor 100 can be continued. Furthermore, even after the temperature on the downstream side of the dryer 29 falls within the allowable range due to the supercooling process, the temperature on the downstream side of the dryer 29 is monitored again after a certain period of time has elapsed, and if the temperature is not within the allowable range, the supercooling operation is resumed. Therefore, even if the malfunction of the dryer 29 is a permanent failure, dehumidified air can be continuously supplied.

In addition, the warning of the abnormality continues until the temperature on the downstream side of the dryer 29 is monitored again after the lapse of the above-mentioned predetermined time and the temperature falls within the allowable range. Therefore, a user or a manager of the compressor 100 can recognize that the compressor 100 is in the state of confirmation of failure, and can judge whether the dryer failure is due to a temporary factor or a failure requiring repair or replacement, depending on the length of the notification time.

<Modification>
A modification of this embodiment will be described. In the above embodiment, malfunction of the dryer 29 is determined from the detected values of the temperature sensor 26 downstream of the dryer 29 and the pressure sensor 24 downstream of the air cooler 10 . However, the combination of both sensors is not limited to this. For example, the pressure sensor 24 downstream of the air cooler 10 may be a temperature sensor (first temperature sensor). In this case, it can be said that the defect determination becomes more accurate because the determination can be made based on the actually measured temperatures upstream and downstream of the dryer 29 .

Also, the temperature sensor 26 on the downstream side of the dryer can be replaced with a pressure sensor (second pressure sensor). In freeze dryers, cooling causes a slight drop in compressed air pressure. Therefore, similar to the detection value of the pressure sensor 24, correlation information between pressure and temperature may be stored in the control unit 17, and malfunction of the dryer may be determined by comparing the estimated temperatures. Similarly, the temperature sensor 26 on the downstream side of the dryer may be a pressure sensor (second pressure sensor), and the pressure sensor 24 on the downstream side of the air cooler 10 and upstream of the dryer may be a temperature sensor (first temperature sensor).

In the above embodiment, the values detected by the pressure sensor 24 on the downstream side of the air cooler 10 and the temperature sensor 26 on the downstream side of the dryer are used. Alternatively, these may be used as backup sensors for the pressure sensor 24 . For example, in determining whether the temperature downstream of the dryer is within the allowable range after a certain period of time has elapsed in S113, if it is determined that the temperature is not within the allowable range (S113), the pressure sensor 24 is replaced with the pressure sensor 22, and the determination of S113 is made again based on the detected value. It is also possible to cope with sensor failure and the like.

A second embodiment of the present invention will be described. The first embodiment is a configuration example in which the dryer 29 is housed inside the housing 40 of the compressor 100, but the second embodiment is different in that the dryer 29 is arranged outside the compressor 100 and the temperature sensor 26 and the pressure sensor 24 are also arranged outside the compressor 100 . Hereinafter, it demonstrates using drawing. Elements similar to those of the first embodiment are denoted by the same reference numerals, and detailed description thereof may be omitted.

FIG. 3 schematically shows the configuration of the second embodiment. The dryer 29 is arranged outside the compressor 100 and connected via a discharge pipe 50A. A pressure sensor 24 is arranged on the discharge pipe 50A and connected to the controller 17 of the compressor 100 via a wired or wireless communication line. A discharge pipe 50B through which dehumidified compressed air flows is connected to the downstream side of the dryer 29 . A temperature sensor 26 is arranged on the discharge pipe 50B and connected to the controller 17 of the compressor 100 via a wired or wireless communication line. The other side of the discharge pipe 50B is connected to the air tank 60 , and the downstream side thereof serves as a terminal pipe that connects to user equipment.

In this way, the present invention can be applied even if the dryer 29 is configured separately from the compressor.

Note that the combination of the pressure sensor 24 and the temperature sensor 26 can be changed as in the modification of the first embodiment.

A third embodiment of the present invention will be described. The configuration of the compressor 100 and the dryer 29 and the arrangement of the pressure sensor 24 and the temperature sensor 26 are the same as those of the second embodiment, but the main differences are the communication connection configuration of the pressure sensor 24 and the temperature sensor 26 and the control of malfunction of the dryer 29 by a remote server device 90 connected to the network. Hereinafter, it demonstrates using drawing. Elements similar to those in other embodiments are denoted by the same reference numerals, and detailed description may be omitted.

The structure of Example 3 is shown typically in FIG. In FIG. 4, the compressor 100 has a communication antenna 47 connected to the controller 17 . The communication antenna 47 is wired/wirelessly connected to the wireless repeater 70 via the LAN 71, for example. The wireless repeater 70 is connected to the network 99 and is connected to the server device 90 and the administrator terminal 95 . In addition, the control unit 17 of the compressor 100 includes a communication module, and is connected to a mobile terminal 85 via a short-range wireless network 80 (e.g., Bluetooth (registered trademark), Wi-Fi (registered trademark), NFC, etc.) . The mobile radio server 82 is connected to a network 99 (Internet, etc.).

In this embodiment, the detected values of the pressure sensor 24 and the temperature sensor 26 are output to the server device 90 . The server device 90 performs the detection processing (FIG. 2, etc.) of the malfunction of the dryer 29 shown in Embodiments 1 and 2, and performs remote control to output a control processing command to the control unit 17 of the compressor 100 via the wireless relay 70 and the portable wireless server 82 .

Specifically, the server device 90 determines whether or not the temperature on the downstream side of the dryer 29 is within the allowable range from the detected values of the pressure sensor 24 and the temperature sensor 26, and if it is not within the allowable range, outputs a signal indicating that the dryer 29 is abnormal to the compressor 100, the administrator terminal 95, and the mobile terminal 85 possessed by the user of the compressor 100, etc., via the communication line, and causes them to perform a notification operation.

Further, when the temperature on the downstream side of the dryer 29 is not within the allowable range, the server device 90 transmits a supercooling process execution command value to the control unit 17 of the compressor 100 via the communication line, causing the compressor 100 to perform the supercooling process. In this manner, the present invention can also be implemented in a configuration for remote monitoring.

Note that the configuration of the communication connection is not limited to these, and can be changed arbitrarily.

Although various embodiments for carrying out the present invention have been described above, the present invention is not limited to these configurations and processes, and can be changed as appropriate without departing from the scope of the invention. For example, it is possible to divert or replace part or all of the configurations and processes of other embodiments.

Further, in the above-described embodiment, a liquid feed type air compressor is used as an example, but the present invention can also be applied to a non-liquid feed type compressor. Also, the compression medium is not limited to air, and other gases may be used.

Further, in the above-described embodiment, in the processing for determining malfunction of the dryer 29, when the temperature on the downstream side of the dryer 29 is higher than the temperature on the upstream side by a predetermined range, it is determined that the dryer 29 is abnormal. That is, when the dryer 29 is in an excessive operation due to malfunction, the temperature on the downstream side of the dryer 29 becomes low. In this case, the pressure supplied from the compressor 100 may become excessively low. Therefore, even when the temperature is lower than the predetermined range, it may be determined as abnormal and an alarm may be issued. In this case, the supercooling process described above may be replaced with the insufficient cooling process. For example, it is processing to reduce or stop the rotation speed of the fan device 8 .

DESCRIPTION OF SYMBOLS 1... Compressor body 2... Suction filter 3... Suction throttle valve 4... Screw rotor 5... Gas-liquid separator 6... Secondary filter 7... Pressure regulating valve 8... Fan device 10... Air cooler 11... Oil cooler 12... Temperature control valve 15... Electric motor 16... Inverter 17... Control part 18... Belt 19... Pressure sensor 21/22/23/24... Pressure sensor 26/27... Temperature sensor, 29... dryer, 30... heat exchanger for dryer, 31... condenser for dryer, 32... fan device, 33... compressor for dryer, 34... expander, 35... auto drain pipe, 36... manual drain pipe, 40... housing, 41... suction port,42Air outlet 43 Air inlet for dryer 44 Air outlet for dryer 47 Communication antenna 50A/50B Discharge pipe 60 Air chamber 70 Wireless repeater 71 LAN 80 Near field wireless network 81 Portable wireless network 82 Portable wireless server 90 Server device 95 Administrator terminal 99 Network

Claims (15)

a compressor body for compressing gas, a drive source for supplying driving force to the compressor body, a discharge piping system through which the compressed gas discharged by the compressor body flows, a dryer connected to the discharge piping system for dehumidifying the compressed gas, either a first temperature sensor or a first pressure sensor arranged upstream of the dryer on the discharge piping system, either a second temperature sensor or a second pressure sensor arranged on the downstream side of the dryer on the discharge piping system, and a control device. A compressor comprising
When the temperature value or pressure value detected by either the second temperature sensor or the second pressure sensor is higher than a predetermined range with respect to the temperature value or pressure value detected by either the first temperature sensor or the first pressure sensor , the controller determines that the dryer is defective ,
Furthermore, a heat exchange device for cooling the compressed gas is provided on the discharge piping system,
A compressor for improving the cooling performance of the heat exchange device when the controller determines that the dryer is defective. A compressor according to claim 1,
The heat exchange device is an air-cooled heat exchanger that cools the compressed gas by heat exchange with cooling air from a fan device, or a liquid-cooled heat exchanger that cools the compressed gas by heat exchange with a liquid medium. A compressor according to claim 1,
A compressor for outputting a notification signal when the controller determines that the dryer is defective . A compressor according to claim 1,
The compressor, wherein the control device improves the cooling performance of the heat exchange device until the difference between the temperature value or pressure value detected by either the first temperature sensor or the first pressure sensor and the temperature value or pressure value detected by either the second temperature sensor or the second pressure sensor falls within a predetermined range. A compressor according to claim 1,
The compressor, wherein the controller reduces the improved cooling performance of the heat exchange device when the difference between the temperature value or pressure value detected by either the first temperature sensor or the first pressure sensor and the temperature value or pressure value detected by either the second temperature sensor or the second pressure sensor falls within a predetermined range. A compressor according to claim 1 ,
The controller stores temperature information corresponding to the pressure detected by the first pressure sensor in advance, and when judging the malfunction of the dryer from the detected values of the first pressure sensor and the second temperature sensor, judges the malfunction of the dryer from the temperature information and the temperature detected by the second temperature sensor. A compressor according to claim 1 ,
The controller stores in advance temperature information corresponding to the pressure detected by the first pressure sensor and temperature information corresponding to the pressure detected by the second pressure sensor, and when judging the malfunction of the dryer from the detected values of the first pressure sensor and the second pressure sensor, judges the malfunction of the dryer from the temperature information corresponding to the pressure detected by the first pressure sensor and the temperature information corresponding to the pressure detected by the second pressure sensor. A compressor according to claim 1,
The compressor main body has a positive displacement or rotary compression mechanism, and is a feed type or non-feed type compressor main body . A compressor having at least a compressor body for compressing gas, a drive source for supplying a driving force to the compressor body, and a control device, a dryer connected to the compressor via a pipe and dehumidifying the discharged compressed gas, either a first temperature sensor or a first pressure sensor arranged in an upstream pipe of the dryer, a second temperature sensor or a second pressure sensor arranged in a downstream pipe of the dryer, and any one of the compressor, the first temperature sensor and the first pressure sensor. On the other hand, a compressor management system comprising either one of the second temperature sensor or the second pressure sensor and a server device communicably connected via a wired or wireless communication line,
the server device determines that the dryer is defective when the temperature value or pressure value detected by either the second temperature sensor or the second pressure sensor is higher than a predetermined range with respect to the temperature value or pressure value detected by either the first temperature sensor or the first pressure sensor;
Furthermore, the compressor includes a heat exchanger for cooling the compressed gas on a discharge piping system through which the compressed gas flows,
A compressor management system, wherein the server device improves the cooling performance of the heat exchange device when it determines that the dryer is defective. A compressor management system according to claim 9 ,
The heat exchange device is an air-cooled heat exchanger that cools the compressed gas by heat exchange with cooling air from a fan device, or a liquid-cooled heat exchanger that cools the compressed gas by heat exchange with a liquid medium Compressor management system. A compressor management system according to claim 9 ,
A compressor management system , wherein the controller outputs a notification signal when the controller determines that the dryer is defective . A compressor management system according to claim 9 ,
The compressor management system, wherein the server device improves the cooling performance of the heat exchange device until the difference between the temperature value or pressure value detected by either the first temperature sensor or the first pressure sensor and the temperature value or pressure value detected by either the second temperature sensor or the second pressure sensor falls within a predetermined range. A compressor management system according to claim 9 ,
The compressor management system, wherein the server device lowers the improved cooling performance of the heat exchange device when the difference between the temperature value or pressure value detected by either the first temperature sensor or the first pressure sensor and the temperature value or pressure value detected by either the second temperature sensor or the second pressure sensor falls within a predetermined range. A compressor management system according to claim 9 ,
The compressor management system, wherein the server device stores in advance temperature information corresponding to the pressure detected by the first pressure sensor, and when judging the malfunction of the dryer from the detected values of the first pressure sensor and the second temperature sensor, judges the malfunction of the dryer from the temperature information and the temperature detected by the second temperature sensor. A compressor management system according to claim 9 ,
The compressor management system, wherein the server stores temperature information corresponding to the pressure detected by the first pressure sensor and temperature information corresponding to the pressure detected by the second pressure sensor in advance, and when judging the malfunction of the dryer from the detection values of the first pressure sensor and the second pressure sensor, judges the malfunction of the dryer from the temperature information corresponding to the pressure detected by the first pressure sensor and the temperature information corresponding to the pressure detected by the second pressure sensor.

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