Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
VACUUM PUMP
Document Type and Number:
WIPO Patent Application WO/2018/193376
Kind Code:
A1
Abstract:
Described is a vacuum pump comprising a monitoring system (1) comprising one or more devices (9; 10; 11; 12; 13; 14; 15, 16) for measuring a respective physical quantity of the vacuum pump (2), in particular for measuring a respective physical quantity during its operation, each of which is positioned at a respective location on the vacuum pump (2); each device (9; 10; 11; 12; 13; 14; 15; 16) is configured for converting the physical quantity measured into a respective electric signal (9a; 10a; 11a; 12a; 13a; 14a; 15a; 16a); the monitoring system (1) comprises an electronic device (21) for receiving the electric signal (9a; 10a; 11a; 12a; 13a; 14a; 15a; 16a) generated by the respective measuring device (9; 10; 11; 12; 13; 14; 15; 16) and a processing unit (24) configured to process the signals (9a; 10a; 11a; 12a; 13a; 14a; 15a; 16a) acquired from the receiving device (21); the receiving device (21) and the processing unit (24) are in communication with each other by means of a communication network (18); the monitoring system (1) comprises display means (20) in order to provide the signals (9b; 10b; 11b; 12b; 13b; 14b; 15b; 16b) processed by the processing unit (24) to an operator.

Inventors:
ZUCCHINI, Marco (Via dei Frassini, 19/2, Argelato, 40050, IT)
Application Number:
IB2018/052662
Publication Date:
October 25, 2018
Filing Date:
April 17, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
D.V.P. VACUUM TECHNOLOGY S.P.A. (Via Rubizzano, 627, San Pietro In Casale, 40018, IT)
International Classes:
F04B49/06; F04B41/00; F04B51/00
Foreign References:
EP0809164A11997-11-26
GB2424928A2006-10-11
US6272400B12001-08-07
EP1577559A12005-09-21
GB2536461A2016-09-21
US20010012485A12001-08-09
US6077051A2000-06-20
Attorney, Agent or Firm:
CASADEI, Barbara (Via di Corticella 87, Bologna, 40128, IT)
Download PDF:
Claims:
CLAIMS

1 . A vacuum pump comprising a monitoring system (1 ) comprising one or more devices (9; 10; 1 1 ; 12; 13; 14; 15, 16) for measuring a respective physical quantity of the vacuum pump (2), in particular for measuring a respective physical quantity of the vacuum pump (2) during its operation, each of which is positioned at a respective location on the vacuum pump (2);

each device (9; 10; 1 1 ; 12; 13; 14; 15; 16) is configured for converting the physical quantity measured into a respective electric signal (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a);

the monitoring system (1 ) comprises an electronic device (21 ) for receiving the signal (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) generated by the respective measuring device (9; 10; 1 1 ; 12; 13; 14; 15; 16) and a processing unit (24) configured to process the signals (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) acquired from the electronic receiving device (21 ); the electronic receiving device (21 ) and the unit (24) for processing the signals (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) measured by the electronic receiving device (21 ) are in communication by means of a communication network (18);

the monitoring system (1 ) comprises display means (20) in order to provide the signals (9b; 10b; 1 1 b; 12b; 13b; 14b; 15b; 16b) processed by the processing unit (24) to an operator.

2. The pump according to independent claim 1 , characterised in that the processing unit (24) of the processing device (17) is configured for comparing one or more signals (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) measured by the receiving unit (21 ) with a respective threshold value; if the signal (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) measured exceeds the respective threshold value, the processing unit (24) is configured to send a warning signal (25) to an operator.

3. The pump according to any one of the preceding claims, characterised in that the processing unit (24) is configured to combine the values of several signals (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) measured and, if this combination corresponds to a reference combination, the processing unit (24) is configured to send a warning signal (25) to an operator.

4. The pump according to any one of the preceding claims, characterised in that the processing unit (24) is configured to correlate between several signals (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) acquired and to determine, through the correlation, if the pump (2) is in an anomalous operating condition; if the processing unit (24) establishes that the vacuum pump (2) is in an anomalous operating condition, the processing unit (24) of the processing device (17) is configured to send a warning signal (25) to an operator.

5. The pump according to any one of the preceding claims, characterised in that the processing unit (24) is configured to process one or more signals (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) acquired from the electronic receiving device (21 ) and determine whether an anomalous operating condition occurs; if the processing unit (24) establishes that an anomalous operating condition of the vacuum pump (2) will occur, it is configured to send a warning signal (25) to an operator and to determine the residual operating time (26) of the vacuum pump (2) before the anomalous operating condition of the vacuum pump (2) will occur.

6. The pump according to claim 5, characterised in that by means of calculation algorithms which interpolate the trend of one or more signals (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) acquired from the processing unit (24), the processing unit (24) is configured to determine whether at least one of the signals (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) acquired exceeds the respective threshold value; the processing unit (24) is configured to determine the residual operating time (26) of the vacuum pump (2) before one of the signals (9a; 10a; 1 1 a; 1 2a; 13a; 14a; 15a; 16a) acquired exceeds the respective threshold value.

7. The pump according to any one of the preceding claims, characterised in that the processing unit (24) is configured for associating at least the signal (16a) deriving from a timer device (16) measuring the operating time of the vacuum pump (2) with at least one other signal (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a) deriving from the respective measuring device (9; 10; 1 1 ; 12; 13; 14; 15).

8. The pump according to any one of the preceding claims, characterised in that the processing unit (24) is configured to be programmed by an operator.

9. The pump according to any one of the preceding claims, characterised in that the processing unit (24) is configured to receive external data (22) from an operator.

10. The pump according to any one of the preceding claims, characterised in that the monitoring system (1 ) comprises an internal memory (23) in communication with the processing unit (24); the internal memory (23) is configured to hold in the memory at least the signals (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) acquired from the processing unit (24).

1 1 . The pump according to any one of the preceding claims, characterised in that the monitoring system (1 ) comprises at least one terminal device (29) comprising display means (20) in order to provide the signals (9b; 10b; 1 1 b; 12b; 13b; 14b; 15b; 16b) processed by the processing unit (24) to an operator.

12. The pump according to any one of the preceding claims, characterised in that the monitoring system (1 ) comprises at least one device (9) for measuring the temperature outside the vacuum pump (2).

13. The pump according to any one of the preceding claims, characterised in that the monitoring system (1 ) comprises at least one device (10) for measuring the operating temperature of the vacuum pump (2).

14. The pump according to any one of the preceding claims, characterised in that the monitoring system (1 ) comprises at least one device (1 1 ) for measuring the electrical absorption of the motor unit (5).

15. The pump according to any one of the preceding claims, comprising an operating body (3) housing mechanical means (4) configured for compressing a compressible fluid entering the operating body (3), characterised in that it comprises a device (12) for measuring the absolute pressure of the compressible fluid flowing inside the operating body (3); the device (12) for measuring the absolute pressure being positioned in the infeed duct (6) of the compressible fluid of the operating body (3).

16. The pump according to any one of the preceding claims, comprising a tank (8) containing a lubricating substance, characterised in that it comprises at least one device (13) for measuring the relative pressure inside the tank (8).

17. The pump according to any one of the preceding claims, comprising a tank (8) containing a lubricating substance, characterised in that it comprises at least one device (14) for measuring the level of the lubricating substance inside the tank (8).

18. The pump according to any one of the preceding claims, comprising a tank (8) containing a lubricating substance, characterised in that it comprises at least one device (15) for measuring one or more physical and/or chemical properties of the lubricating substance contained inside the tank (8).

19. The pump according to any one of the preceding claims, characterised in that the electronic receiving device (21 ) and the unit (24) for processing the signals (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) measured by the electronic receiving device (21 ) are in communication by means of at least one data transmission device (19); a data communication network (18) connecting the data transmission device (19) with the processing unit (24).

20. The pump according to claim 19, characterised in that the electronic receiving device (21 ) of a vacuum pump (2) is connected to a respective data transmission device (19) by means of a dedicated connection (27).

21 . The pump according to claim 19, characterised in that a plurality of electronic receiving devices (21 ), each of a respective vacuum pump (2), is connected to a single data transmission device (19) by means of a wireless data transmission network (27).

22. The pump according to any one of claims 19 to 21 , characterised in that the data transmission device (19) comprises a relative data memory (28) which is able to temporarily store the signals (9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a) measured by a respective electronic receiving device (21 ) until they are transmitted to the processing unit (24) by means of the communication network (18).

23. The pump according to any one of claims 19 a 22, characterised in that the data transmission device (19) is configured for being geo- localised.

Description:
DESCRIPTION

VACUUM PUMP

Technical field

This invention relates to a vacuum pump.

The term vacuum pump means an operating machine which works by acting on a compressible fluid.

The term compressible fluid means a fluid in its gaseous phase, which also can be defined in a relative particular exception as a gaseous fluid. Background art

Vacuum pumps are configured to change the pressure of the fluid entering in such a way that at the outlet there is a greater pressure than the pressure of the fluid entering.

Generally speaking, a vacuum pump comprises an operating body housing mechanical means, generally of the rotary type, configured for compressing the fluid entering and a motor unit for actuating the mechanical means.

The sectors of use of vacuum pumps vary from the chemical industry, to the food industry, packaging, processing of ceramic products, wood or glass, and others.

In this context, any stoppages or malfunctions of the vacuum pump have an effect on the production line in which the machine is installed, resulting in most cases in costs due to lack of production.

In this context, the need is increasingly felt to perform maintenance of the vacuum pump of the predictive type in such a way as to limit over time the stoppages caused by the malfunctions of the pump and to be able to program the maintenance, scheduling it when possible.

Aim of the invention One aspect of this invention is provide a vacuum pump comprising a monitoring system comprising one or more devices for measuring a respective physical quantity of the vacuum pump, in particular for measuring a respective physical quantity during its operation, each of which is positioned at a respective location on the vacuum pump.

Each measuring device is configured for converting the physical quantity measured into a respective electric signal.

The monitoring system comprises an electronic device for receiving the signal generated by the respective measuring device and a processing unit configured to process the signals acquired from the electronic receiving device.

The electronic receiving device and the unit for processing the signals measured by the electronic receiving device are in communication by means of a communication network.

The monitoring system comprises display means in order to provide the signals processed by the processing unit to an operator.

Advantageously, the monitoring system according to the invention makes it possible to monitor one or more physical quantities of the vacuum pump in order to assess the relative operational status, and, if necessary, assess the maintenance, before the fault event occurs.

Brief description of the drawings

Further features and advantages of this invention are more apparent in the description below, with reference to a preferred, non-limiting embodiment of a vacuum pump as illustrated in the accompanying drawings, in which:

- Figure 1 is a block diagram of a monitoring system for a vacuum pump according to the invention;

- Figure 2 is a block diagram of a lubricated vacuum pump comprising a plurality of devices for measuring respective physical quantities to be monitored according to the invention; - Figure 3 is a block diagram of a dry vacuum pump comprising a plurality of devices for measuring respective physical quantities to be monitored according to the invention. Detailed description of preferred embodiments of the invention

With reference to the accompanying drawings, the numeral 1 denotes a monitoring system for a vacuum pump 2 according to the invention.

The vacuum pump 2 monitored by the monitoring system 1 comprises an operating body 3 housing mechanical means 4 configured for compressing a compressible fluid entering the operating body 3, as schematically illustrated in Figures 2 and 3.

In order to compress the compressible fluid, the mechanical means 4 are usually of rotary type.

Alternatively, the mechanical means 4 are of alternative type.

The vacuum pump 2 comprises a motor unit 5 for actuating mechanical means 4 of the operating body 3.

For example, if the mechanical means 4 are of a rotary type, the motor unit 5 rotates the mechanical means 4 about a relative axis of rotation.

The operating unit 3 comprises at least one infeed duct 6 of the compressible fluid towards the mechanical means 4 and an outfeed duct 7 of the compressible fluid, positioned downstream of the mechanical means 4, with reference to the feed flow of the compressible fluid in the operating body 3.

The compressible fluid which flows out from the outfeed duct 7 of the operating body 3 has physical properties different from the compressible fluid flowing into the infeed duct 6 of the operating body 3 by the action of mechanical means 4.

The term physical characteristic of the compressible fluid means a physical quantity which can be measured, such as, for example, the pressure, absolute or relative, or the temperature. In the vacuum pump 2 the pressure of the compressible fluid coming out of the operating body 3 is greater or equal to the pressure at which it is sucked drawn the vacuum pump 2.

The vacuum pumps 2 are divided into two main families in relation to their mode of operation: lubricated vacuum pumps 2, as illustrated schematically in Figure 2, or dry vacuum pumps 2, as illustrated schematically in Figure 3.

Referring to the lubricated vacuum pumps 2, they comprise a tank 8 containing a substance for lubricating the mechanical means 4 of the operating body 3.

The dry vacuum pumps 2 not comprise any tank 8 for containing a lubricating substance.

The monitoring system 1 comprises one or more devices 9; 10; 1 1 ; 12; 13; 14; 15; 16 for measuring a respective physical quantity of the vacuum pump 2.

More specifically, each measuring device 9; 10; 1 1 ; 12; 13; 14; 15; 16 is configured for measuring a respective physical quantity of the vacuum pump 2 during its operation.

Each measuring device 9; 10; 1 1 ; 12; 13; 14; 15; 16 is positioned in a respective location of the vacuum pump 2 in order to measure the respective physical quantity.

According to the embodiments illustrated, the monitoring system 1 comprises at least one device 9 for measuring the temperature outside the vacuum pump 2.

The sensor 9 for measuring the outside temperature is located outside the vacuum pump 2 in a location such that the heat dissipated by the pump 2 during the operation cannot invalidate the measurement.

The monitoring system 1 comprises at least one device 10 for measuring the operating temperature of the vacuum pump 2.

In the dry vacuum pumps 2, the device 10 for measuring the operating temperature of the vacuum pump 2 is located in the outfeed duct 7 of the pump 2, as shown in Figure 3, or in the lubricated vacuum pumps 2, the device 10 for measuring the operating temperature of the vacuum pump 2 is located in the tank 8 preferably in contact with the lubricating substance, as shown in Figure 2.

The monitoring system 1 comprises at least one device 1 1 for measuring the electrical absorption of the motor unit 5.

The monitoring system 1 comprises a device 12 for measuring the absolute pressure of the compressible fluid which flows inside the operating body 3.

The device 12 for measuring the absolute pressure of the vacuum pump 2 is positioned in the infeed duct 6 of the compressible fluid, as illustrated in Figures 2 and 3.

With reference to the lubricated vacuum pumps 2, the monitoring system 1 comprises at least one device 13 for measuring the pressure inside the tank 8, the value being determined by the degree of clogging of a de-oiling filter positioned in the tank 8.

The measuring device 13 measures the relative pressure inside the tank 8. With reference to the lubricated vacuum pumps 2, the monitoring system 1 comprises at least one device 14 for measuring the level of the lubricating substance inside the tank 8.

With reference to lubricated vacuum pumps 2, the monitoring system 1 comprises at least one device 15 for measuring one or more physical and/or chemical properties of the lubricating substance contained inside the tank 8.

The monitoring system 1 comprises at least one timer device 16, for timing the operation of the vacuum pump 2.

The timer device 16 is preferably connected to the motor unit 5, in such a way as to measure the actual operating time of the vacuum pump 2.

The preferred embodiment of the vacuum pump 2, if it is of the lubricated type, comprises all measuring the devices 9; 10; 1 1 ; 12; 13; 14; 15; 16 listed above. If the vacuum pump 2 is of the dry type, there are not the measuring devices 13; 14; 15 positioned inside the tank 8 for containing the lubricating substance since it does not have such a substance.

In other words, the vacuum pump 2 may comprise all or at least part of the measuring devices 9; 10; 1 1 ; 12; 13; 14; 15; 16 mentioned above.

Each device 9; 10; 1 1 ; 12; 13; 14; 15; 16 is configured for converting the physical quantity measured into a respective electric signal 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a.

The monitoring system 1 comprises an electronic device 21 for receiving the signal 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a generated by the respective measuring device 9; 10; 1 1 ; 12; 13; 14; 15; 16.

The electronic device 21 for receiving the signals 9a; 10a; 1 1 a; 12a; 13a;

14a; 15a; 16a measured by the respective measuring device (9; 10; 1 1 ;

12; 13; 14; 15; 16) is preferably connected to the motor unit 5 of the vacuum pump 2.

The monitoring system 1 comprises a processing unit 24 configured to process the signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a acquired from the electronic receiving device 21 .

The electronic receiving device 21 and the unit 24 for processing the signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a measured by the electronic receiving device 21 are in communication by means of at least one data transmission device 19.

In the preferred embodiment, each vacuum pump 2 is associated with a respective data transmission device 19.

The electronic receiving device 21 of a pump 2 is connected to the respective data transmission device 19 by a dedicated connection 27. This connection 27 may be in the form of a physical connection, such as, for example, an electric connection or a soldering or a connection via cable. This connection 27 may be in the form of a wireless or remote Internet connection, or telephone network communication or electronic data transmission network.

If the data transmission connection 27 is an Internet connection, in particular wireless, it is possible to provide a single data transmission device 19 for controlling the transmission of signals 9a; 10a; 1 1 a; 12a;

13a; 14a; 15a; 16a deriving from a plurality of electronic receiving devices

21 each of which is associated with a respective vacuum pump 2.

A data communication network 18 connects the data transmission device 19 with the processing unit 24.

The expression communication network 18 is used to mean an Internet connection, either wireless or remote, or a telephone communication network or an electronic data transmission network.

Preferably, the communication network 18 is an Internet connection, in particular wireless.

Since the communication network 18 is an Internet connection network, the data transmission device 19 is of the "gateway" type.

The data transmission device 19 comprises a relative data memory 28 which is able to temporarily store the signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a measured by a respective electronic receiving device 21 until they are transmitted to the processing unit 24 by means of the communication network 18.

Is understood that, in the case in which each vacuum pump 2 is associated with a respective data transmission device 19, each comprises a relative data memory 28, and in the case in which a plurality of vacuum pumps 2 is associated with a single data transmission device 19, it comprises a relative data memory 28.

If the communication network 18 does not allow the signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a measured by the data transmission device 19 to be sent to the processing unit 24, for example due to temporary interruption of the operation of the network 18, the data memory 28 of the transmission device 19 makes it possible to store, in particular until there is no longer space available in the memory, the signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a already sent by the electronic receiving device 21 but not yet transmitted to the processing unit 24.

In this way, when the operation of the communication network 18 is restored, the signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a stored in the data memory 28 of the transmission device 19 are sent to the processing unit 24.

The data transmission device 19 is configured for being geo-localised, in such a way that it is possible to geographically identify the one or more vacuum pumps 2 which require maintenance once the signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a sent by the data transmission device 19 to the processing unit 24 have been processed.

The monitoring system 1 comprises a data processing device 17, comprising the processing unit 24 of the signals 9a; 10a; 1 1 a; 12a; 13a;

14a; 15a; 16a measured by the electronic receiving device 21 .

The monitoring system 1 comprises at least one terminal device 29 comprising display means 20 in order to provide the signals 9b; 10b; 1 1 b;

12b; 13b; 14b; 15b; 16b processed by the processing unit 24 to an operator.

The terminal device 29 may be in the form of a personal computer, mobile phone, tablet, handheld device or other similar electronic device.

The terminal device 29 is configured to make accessible to an operator using the display means 20 the signals 9b; 10b; 1 1 b; 12b; 13b; 14b; 15b; 16b processed by the processing unit 24.

Preferably, the terminal device 29 is configured to make available the signals 9b; 10b; 1 1 b; 12b; 13b; 14b; 15b; 16b processed by the data processing device 17 by means of web pages.

The terminal device 29 and the data processing device 17 are connected by means of a data communication network. The processing unit 24 is configured to be programmed by an operator, in particular through the terminal device 29.

The processing unit 24 is configured for receiving external data 22, preferably entered by an operator, in particular through the terminal device 29.

The data processing device 17 comprises an internal memory 23 in communication with the processing unit 24.

The internal memory 23 is configured to hold in the memory at least the signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a acquired from the processing unit 24.

The internal memory 23 is configured for recording the data 22 entered by the operator.

The internal memory 23 is configured for storing the signals 9b; 10b; 1 1 b; 12b; 13b; 14b; 15b; 16b acquired from the processing unit 24.

The data processing device 17 comprises the internal memory 23.

The processing unit 24 is configured for comparing the signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a acquired with a respective threshold value. Preferably, the threshold value of the respective signal 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a is an external data 22 entered by an operator using the terminal device 29.

If the signal 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a acquired from the processing unit 24 exceeds the respective threshold value, the processing unit 24 is configured to send a warning signal 25 to an operator.

The warning signal 25 may be, for example, in the form of a SMS or MMS, or e-mail or telephone call.

The processing unit 24 of the processing device 17 is configured to combine together several signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a measured and, if the combination calculated corresponds to a reference combination, the processing unit 24 is configured to send a warning signal 25 to an operator. The reference combination indicates an anomalous condition of operation of the vacuum pump 2, which is entered as external data 22 by an operator in the processing unit 24.

The processing unit 24 of the processing device 17 is configured to correlate between several signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a acquired and to determine, through the correlation, if the vacuum pump 2 is in an anomalous operating condition.

If the processing unit 24 establishes that the vacuum pump 2 is in an anomalous operating condition, the processing unit 24 of the processing device 17 is configured to send a warning signal 25 to an operator.

The above-mentioned warning signal 25 can be sent from the processing unit 24 outside the processing device 17.

The warning signal 25 may be accessible to the operator using the display means 20 of the terminal device 29.

In use, the terminal device 29 allows the operator to display the signals 9b; 10b; 1 1 b; 12b; 13b; 14b; 15b; 16b processed by the processing unit 24 by means of the display means 20.

If the processing unit 24 is configured for associating at least the signal 16a deriving from a timer device 16 with at least one other signal 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a deriving from the respective measuring device 9; 10; 1 1 ; 12; 13; 14; 15; the operator can display for each physical quantity measured by the respective measuring device 9; 10; 1 1 ; 12; 13; 14; 15 the relative trend during operation of the vacuum pump 2.

Advantageously, this possibility allows the operator to monitor the operating condition of the vacuum pump 2 over time.

As the processing unit 24 is configured to correlate between several signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a acquired, advantageously the monitoring system 1 makes it possible to establish in automatic mode, using the processing unit 24, if the pump 2 has an anomalous operating condition or not. In order to detect any abnormal conditions of operation of the vacuum pump 2 before a fault occurs, for example before the signal 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a acquired by the processing unit 24 exceeds the respective threshold value, the processing unit 24 is configured to process the signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a acquired from the electronic receiving device 21 and determine whether or not an anomalous operating condition occurs and, if the anomalous operating condition occurs, determine the residual operating time 26 within which an anomalous operating condition of the vacuum pump 2 will occur.

If the processing unit 24 establishes that an anomalous operating condition of the vacuum pump 2 will occur, it is configured to send a warning signal 25 to an operator.

In other words, by means of calculation algorithms which interpolate the trend of one or more signals 9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a acquired from the processing unit 24, the processing unit 24 is configured to determine whether at least one of the signals 9a; 10a; 1 1 a; 12a; 13a;

14a; 15a; 16a acquired exceeds the respective threshold value.

The processing unit 24 is configured to determine the residual operating time of the vacuum pump 2 before the anomalous operating condition of the vacuum pump 2 occurs, that is, before one of the signals 9a; 10a; 1 1 a;

12a; 13a; 14a; 15a; 16a acquired exceeds the respective threshold value.

The processing unit 24 is configured to correlate between several signals

9a; 10a; 1 1 a; 12a; 13a; 14a; 15a; 16a acquired to establish if the pump 2 is in an anomalous operating condition or not.

Using the correlation, the processing unit 24 is configured to determine the residual operating time of the vacuum pump 2 before the anomalous operating condition of the vacuum pump 2 occurs.

The residual time 26 for operation of the vacuum pump 2 is made available the operator using the display means 20. The processing of the processing unit 24 is made by statistical calculation and/or by using algorithms of mathematical models programmed by an operator.