Compressor system and control method thereof

Abstract

The present disclosure relates to a compressor system and a control method thereof. The compressor system comprises a first pipeline configured to provide water vapor; a compressor having an inlet connected to the first pipeline, the compressor being configured to warm and pressurize the water vapor provided by the first pipeline; a second pipeline connected to the first pipeline, the second pipeline being configured to lead out part of the water vapor in the first pipeline; a cooling device connected to the second pipeline, the cooling device being configured to cool the water vapor led out by the second pipeline to form liquid water; and a third pipeline connected to the cooling device and the compressor, the third pipeline being configured to lead the liquid water to the compressor to cool the compressor. The medium for cooling the compressor is the water vapor led out from the first pipeline, which greatly reduces the probability of dirt formation on the surface of the internal components of the compressor, maintains stable cooling effect, improves the energy efficiency of the compressor, and at the same time can facilitate the compressor to output pure water vapor.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of compressors, and in particular, to a compressor system and a control method thereof. BACKGROUND

[0002] A vapor compressor is used to pressurize and heat low-pressure (or low-temperature) vapor to provide to a user. During operation, the internal components of the compressor generate heat, which affects the energy efficiency of the compressor. In some related technologies, a refrigerant is introduced to cool the internal components of the compressor, which causes dirt to form on the internal components of the compressor, affecting the energy efficiency of the compressor and the purity of the exhaust vapor of the compressor. SUMMARY

[0003] Some embodiments of the present disclosure provide a compressor system and a control method thereof, which are used to alleviate the problems of low energy efficiency of the compressor and impure exhaust vapor.

[0004] In one aspect of the present disclosure, a compressor system is provided, comprising:

[0005] a first pipeline configured to provide water vapor;

[0006] a compressor having an inlet connected to the first pipeline, the compressor being configured to heat and pressurize the water vapor provided by the first pipeline;

[0007] a second pipeline connected to the first pipeline, the second pipeline being configured to lead out part of the water vapor in the first pipeline;

[0008] a cooling device connected to the second pipeline, the cooling device being configured to cool the water vapor led out by the second pipeline to form liquid water; and

[0009] a third pipeline connecting the cooling device and the compressor, the third pipeline being configured to lead the liquid water to the compressor to cool the compressor.

[0010] In some embodiments, the compressor system further comprises a water tank, and the third pipeline comprises a first pipe segment and a second pipe segment, the first pipe segment connecting the cooling device and the water tank, and the second pipe segment connecting the water tank and the compressor.

[0011] In some embodiments, the compressor system further comprises a first detection element, a second detection element, and a first valve, the first detection element being arranged at a low position of the water tank, the second detection element being arranged at a high position of the water tank, and the first valve being arranged in the second pipeline.

[0012] The first valve is configured to open if the first detection element does not detect the liquid level in the water tank, so that the second pipeline connects the first pipeline and the cooling device;

[0013] The first valve is configured to close when both the first and second detection elements detect the water level in the tank, thereby disconnecting the second pipeline.

[0014] In some embodiments, the compressor system further includes a first detection element and a second valve, wherein the first detection element is located at a lower position in the water tank; and the second valve is located in the second pipe section.

[0015] The second valve is configured to open when the first detection element detects the water level in the water tank, thereby connecting the water tank and the compressor.

[0016] In some embodiments, the compressor includes a motor, and the second pipe section is connected to the area where the motor is located so that the liquid water cools the motor.

[0017] In some embodiments, the third pipeline further includes a third pipe section, which connects the water tank and the exhaust section of the compressor, so that the liquid water cools the water vapor heated and pressurized by the compressor.

[0018] In some embodiments, the compressor system further includes a second valve and a first pump, the second valve being disposed in the second pipe section and the first pump being disposed in the third pipe section, the second valve and the first pump being configured such that, during system startup, the second valve opens preferentially over the first pump.

[0019] In some embodiments, the compressor system further includes a fourth line and a third valve, the fourth line connecting the first line and the compressor inlet, the third valve being disposed on the fourth line, and the second valve, the third valve, and the first pump being configured such that, during system startup, the second valve opens preferentially over the third valve, and the third valve opens preferentially over the first pump.

[0020] In some embodiments, the compressor system further includes a spray element disposed in the third pipe section, the spray element being configured to spray the liquid water in a mist toward the exhaust section of the compressor.

[0021] In some embodiments, the compressor system further includes a second valve, a fourth pipeline, and a third valve, wherein the second valve is disposed in the second pipeline segment, the fourth pipeline connects the first pipeline and the compressor inlet, and the third valve is disposed in the fourth pipeline. The second valve and the third valve are configured such that, during the system startup phase, the second valve opens before the third valve.

[0022] In some embodiments, the compressor system further comprises a fifth pipeline connecting the compressor and the cooling device, the fifth pipeline being configured to direct the water cooled against the motor to the cooling device.

[0023] In one aspect of the present disclosure, a control method of the above-mentioned compressor system is provided, comprising the steps of:

[0024] providing water vapor to an inlet of the compressor through a first pipeline, and warming and pressurizing the water vapor provided by the first pipeline through the compressor;

[0025] directing part of the water vapor in the first pipeline to a cooling device through a second pipeline, cooling the water vapor delivered by the second pipeline through the cooling device to form liquid water; and

[0026] directing the liquid water to the compressor through a third pipeline to cool the compressor.

[0027] In some embodiments, the step of directing the liquid water to the compressor through a third pipeline to cool the compressor comprises the steps of:

[0028] directing the liquid water to a water tank through a first pipe section of the third pipeline;

[0029] directing the water in the water tank to the compressor through a second pipe section of the third pipeline.

[0030] In some embodiments, the step of directing part of the water vapor in the first pipeline to a cooling device through a second pipeline comprises the steps of:

[0031] in a case where a first detection element arranged at a low position of the water tank fails to detect the liquid level of the water tank, connecting the second pipeline to the first pipeline and the cooling device;

[0032] in a case where the first detection element and a second detection element arranged at a high position of the water tank both detect the liquid level of the water tank, disconnecting the second pipeline.

[0033] In some embodiments, the step of directing the water in the water tank to the compressor through a second pipe section of the third pipeline comprises the steps of:

[0034] in a case where a first detection element arranged at a low position of the water tank detects the liquid level of the water tank, connecting the water tank and the compressor.

[0035] In some embodiments, the step of directing the liquid water to the compressor through a third pipeline to cool the compressor comprises:

[0036] In the system starting stage, the second pipe section of the third pipe is controlled to guide the liquid water to the motor of the compressor to cool the motor, and then the first pipe is controlled to provide water vapor to the inlet of the compressor.

[0037] In some embodiments, the re-controlling the first pipe to provide water vapor to the inlet of the compressor further comprises:

[0038] Controlling the third pipe section of the third pipe to guide the liquid water to the exhaust section of the compressor.

[0039] Based on the above technical solutions, the present disclosure has at least the following beneficial effects:

[0040] In some embodiments, the medium for cooling the compressor is water vapor drawn from the first pipe, which greatly reduces the probability of dirt formation on the surface of the internal components of the compressor, maintains stable cooling effect, improves the energy efficiency of the compressor, and at the same time can facilitate the compressor to output pure water vapor; and the temperature of the water vapor drawn from the first pipe is not very high, which can reduce the load of the cooling device and improve the cooling effect; moreover, drawing water vapor from the first pipe will not affect the amount of water vapor entering the compressor, so it will not affect the exhaust capacity of the compressor; and it will not lose the water vapor that has been warmed and pressurized in the compressor, which can improve the energy efficiency of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0041] The accompanying drawings, which are included to provide a further understanding of the present disclosure, constitute a part of the present disclosure, and the illustrative embodiments of the present disclosure and their description serve to explain the present disclosure, and do not constitute an improper limitation on the present disclosure. In the drawings:

[0042] Figure 1 A schematic diagram of a compressor system according to some embodiments of the present disclosure.

[0043] The reference signs in the drawings are explained as follows:

[0044] 1-compressor; 2-cooling device; 3-water tank; 41-first detection element; 42-second detection element; 5-spray member; 61-first pump; 62-second pump; 71-first valve; 72-second valve; 73-third valve; 74-fourth valve; 75-fifth valve;

[0045] 10-first pipe; 20-second pipe; 30-third pipe; 31-first pipe section; 32-second pipe section; 33-third pipe section; 40-fourth pipe; 50-fifth pipe; 60-sixth pipe.

[0046] It should be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale. Also, like reference numerals are used to indicate like parts throughout the specification. DETAILED DESCRIPTION

[0047] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses. The disclosure can take many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the disclosure to those skilled in the art. It should be noted that relative arrangements of components and steps set forth in these embodiments, components of materials, numerical expressions, and numerical values, unless otherwise specifically stated, are to be interpreted as merely illustrative and not as a limitation of the disclosure.

[0048] The terms "first", "second", and similar terms in the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different parts. The terms "include", "comprise", and similar terms mean that the elements before the terms encompass the elements listed after the terms, and do not exclude the possibility of also encompassing other elements. "Up", "down", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly.

[0049] In the present disclosure, when it is described that a particular device is located between a first device and a second device, there can be an intervening device between the particular device and the first device or the second device, or there can be no intervening device. When it is described that a particular device is connected to other devices, the particular device can be directly connected to the other devices without an intervening device, or can not be directly connected to the other devices with an intervening device.

[0050] All terms used in the present disclosure, including technical or scientific terms, have the same meanings as those understood by those skilled in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art, and are not to be interpreted in an idealized or overly formal sense, unless specifically so defined herein.

[0051] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification, where appropriate.

[0052] Figure 1 is a structural schematic diagram of some embodiments of a compressor system according to the present disclosure.

[0053] ReferenceFigure 1 In some embodiments, the compressor system comprises a first pipeline 10, a compressor 1, a second pipeline 20, a cooling device 2 and a third pipeline 30.

[0054] The first pipeline 10 is configured to provide water vapor.

[0055] The inlet of the compressor 1 is connected to the first pipeline 10, and the compressor 1 is configured to warm and pressurize the water vapor provided by the first pipeline 10.

[0056] The second pipeline 20 is connected to the first pipeline 10, and the second pipeline 20 is configured to lead part of the water vapor in the first pipeline 10.

[0057] The cooling device 2 is connected to the second pipeline 20, and the cooling device 2 is configured to cool the water vapor led by the second pipeline 20 to form liquid water.

[0058] The third pipeline 30 connects the cooling device 2 and the compressor 1, and the third pipeline 30 is configured to lead the liquid water to the compressor 1 to cool the compressor 1.

[0059] In the above embodiments, the water vapor is provided to the inlet of the compressor 1 through the first pipeline 10, and the water vapor provided by the first pipeline 10 is warmed and pressurized by the compressor 1; part of the water vapor in the first pipeline 10 is led to the cooling device 2 through the second pipeline 20, and the water vapor transported by the second pipeline 20 is cooled by the cooling device 2 to form pure liquid water; the liquid water is led to the compressor 1 through the third pipeline 30 to cool the compressor 1. The medium for cooling the compressor 1 is the water vapor led from the first pipeline 10, and after the water vapor is cooled by the cooling device 2, the liquid condensed water formed has high purity, which greatly reduces the probability of dirt formation on the surface of the internal components of the compressor 1, maintains stable cooling effect, improves the energy efficiency of the compressor 1, and at the same time, can also facilitate the compressor to output pure water vapor.

[0060] Moreover, since the water vapor is led from the first pipeline 10 to the cooling device 2, that is, the water vapor is led from the inlet of the compressor 1 to the cooling device 2, the temperature of the water vapor led is not very high, which can reduce the load of the cooling device 2 and improve the cooling effect.

[0061] Furthermore, the water vapor is led from the first pipeline 10 to the cooling device 2, that is, the water vapor is led from the inlet of the compressor 1 to the cooling device 2, and by controlling the flow of the first pipeline 10, the amount of water vapor entering the compressor 1 will not be affected, so the exhaust capacity of the compressor 1 will not be affected; compared with the way of leading the water vapor from the inside of the compressor 1 to the cooling device 2 and then transporting it back to the compressor 1 for cooling, the present embodiment does not lose the water vapor that has been warmed and pressurized, and can improve the energy efficiency of the compressor.

[0062] In some embodiments, the cooling device 2 comprises a cooler. Optionally, the cooler comprises an air-cooled cooler.

[0063] In some embodiments, the compressor system further comprises a water tank 3, the third pipeline 20 comprises a first pipe section 31 and a second pipe section 32, the first pipe section 31 connects the cooling device 2 and the water tank 3, and the second pipe section 32 connects the water tank 3 and the compressor 1.

[0064] In the above embodiments, by arranging the water tank 2, the liquid water formed after the water vapor is cooled by the cooling device 2 can be stored in the water tank 2. When the storage amount of the liquid water in the water tank 2 reaches a set amount, the liquid water can be provided to the compressor 1 to cool the compressor 1. The problem that the cooling device 2 cannot provide the liquid water to the compressor 1 in time to cool the compressor 1 due to system fluctuations can be alleviated. Therefore, the energy efficiency of the compressor 1 can be improved.

[0065] In some embodiments, the compressor system further comprises a first detection element 41, a second detection element 42, and a first valve 71. The first detection element 41 is arranged at a low position of the water tank 3, and the second detection element 42 is arranged at a high position of the water tank 3. The first valve 71 is arranged in the second pipeline 20.

[0066] The first valve 71 is configured to be opened when the first detection element 41 fails to detect the liquid level of the water tank 3, so as to connect the second pipeline 20 with the first pipeline 10 and the cooling device 2.

[0067] The first valve 71 is configured to be closed when the first detection element 41 and the second detection element 42 both detect the liquid level of the water tank 3, so as to disconnect the second pipeline 20, and the first pipeline 10 is not connected with the cooling device 2.

[0068] In the above embodiments, the first detection element 41 is arranged at the low position of the water tank 3, and is used to detect whether the liquid level in the water tank 3 reaches a set value of the lowest liquid level. When the first detection element 41 fails to detect the liquid level in the water tank 3, it indicates that the liquid level in the water tank 3 is lower than the set value of the lowest liquid level. At this time, there is not enough water in the water tank 3 to be sent to the compressor 1 to cool the compressor 1. Therefore, the second pipeline 20 needs to be connected with the first pipeline 10 and the cooling device 2, so as to guide part of the water vapor in the first pipeline 10 to the cooling device 2 through the second pipeline 20. The water vapor is cooled by the cooling device 2 to form liquid water, which is sent to the water tank 3, so as to store enough liquid water in the water tank 3 to cool the compressor 1.

[0069] The second detecting element 42 is arranged at a high position of the water tank 3, and is configured to detect whether the liquid level in the water tank 3 reaches a set value of the highest liquid level. In the case that the second detecting element 42 detects the liquid level in the water tank 3, it indicates that the water tank 3 has enough liquid water or is full of liquid water, and thus the second pipeline 20 is disconnected, the first pipeline 10 is not connected to the cooling device 2, and the liquid water is not injected into the water tank 3, so as to prevent the liquid water in the water tank 3 from overflowing.

[0070] In some embodiments, the first detecting element 41 comprises a liquid level sensor.

[0071] In some embodiments, the second detecting element 42 comprises a liquid level sensor.

[0072] In some embodiments, the compressor system further comprises the first detecting element 41 arranged at a low position of the water tank 3, and a second valve 72 arranged at the second pipeline segment 32.

[0073] The second valve 72 is configured to be opened in the case that the first detecting element 41 detects the liquid level of the water tank 3, so as to connect the water tank 3 and the compressor 1.

[0074] In the above embodiments, the first detecting element 41 is arranged at a low position of the water tank 3, and is configured to detect whether the liquid level in the water tank 3 reaches a set value of the lowest liquid level. In the case that the first detecting element 41 detects the liquid level in the water tank 3, it indicates that the liquid level in the water tank 3 is higher than or equal to the set value of the lowest liquid level, and thus the second valve 72 is opened to connect the water tank 3 and the compressor 1, so as to provide the liquid water for cooling the compressor 1 and prevent dry pumping.

[0075] In some embodiments, the compressor 1 comprises a motor, and the second pipeline segment 32 is connected to a region where the motor is arranged, so as to cool the motor by the liquid water.

[0076] In the above embodiments, the motor is a main heating component in the compressor 1, and the liquid water is used to cool the motor, so as to improve the sustainability and stability of the compressor 1 and improve the production efficiency. In addition, the liquid water used to cool the motor is the condensed water with high purity after the water vapor is cooled, which can alleviate the problem of scale formed by metal cations such as calcium and magnesium ions dissolved in the water on the surface of the motor bearing, so as to improve the cooling effect of the motor and reduce the load of the motor cooling.

[0077] In some embodiments, the third pipeline 30 further comprises a third pipeline segment 33 connected to an exhaust segment of the compressor 1, so as to cool the water vapor after the compressor 1 is warmed and pressurized by the liquid water.

[0078] In the above embodiment, the temperature of the water vapor after being heated and pressurized by the compressor 1 is higher than the user's demand, and needs to be adjusted. The liquid water formed by cooling the water vapor by the cooling device 2 can cool the water vapor after being heated and pressurized by the compressor 1, so as to adjust the temperature of the water vapor after being heated and pressurized to meet the user's demand. Moreover, the liquid water used to adjust the temperature of the water vapor after being heated and pressurized is the condensed water with high purity formed after the water vapor is cooled, which can alleviate the problem that the purity of the water vapor discharged after the water in the unit is mixed with the steam for cooling is reduced due to the metal cations such as calcium and magnesium ions dissolved in the water, and can meet the user's use after the water vapor is output.

[0079] In some embodiments, the compressor system further comprises a second valve 72 and a first pump 61, the second valve 72 is arranged in the second pipe section 32, and the first pump 61 is arranged in the third pipe section 33. The second valve 72 and the first pump 61 are configured to open the second valve 72 in priority to the first pump 61 during the system starting stage.

[0080] In the above embodiment, the second valve 72 is opened first, and the second pipe section 32 transports the water in the water tank 3 to the compressor 1 to cool the motor of the compressor 1, thereby alleviating the problem that the motor of the compressor 1 is damaged due to the excessively high temperature. After the compressor 1 is started, the speed of the motor slowly rises. After the compressor 1 is started for a preset time, the motor reaches the highest speed and starts to operate stably, and the temperature of the high-temperature water vapor in the compressor 1 is also expected to reach the highest value. At this time, the first pump 61 is opened, and the third pipe section 33 transports the water in the water tank 3 to the exhaust section of the compressor 1 to cool the high-temperature steam in the unit and reasonably configure the liquid water in the water tank 3, which can not only cool the motor, but also timely cool the high-temperature water vapor in the compressor 1.

[0081] In the above embodiment, the first pump 61 is configured to provide power to transport the liquid water in the water tank 3 to the exhaust section of the compressor 1 through the third pipe section 33.

[0082] In some embodiments, the compressor system further comprises a second pump 62, and the second pump 62 is arranged in the second pipe section 32. The second pump 62 is configured to provide power to transport the liquid water in the water tank 3 to the area where the motor of the compressor 1 is located through the second pipe section 32.

[0083] In some embodiments, the compressor system further comprises a fourth pipe 40 and a third valve 73, the fourth pipe 40 connects the first pipe 10 and the inlet of the compressor 1, and the third valve 73 is arranged in the fourth pipe 40. The second valve 72, the third valve 73 and the first pump 61 are configured to open the second valve 72 in priority to the third valve 73 and open the third valve 73 in priority to the first pump 61 during the system starting stage.

[0084] In the above embodiment, the second valve 72 is first opened, and the second pipe section 32 delivers the water in the water tank 3 to the compressor 1 to cool the motor of the compressor 1, thereby relieving the problem of damage to the motor of the compressor 1 due to excessively high temperature. When the opening time of the second valve 72 reaches a preset value, the third valve 73 is opened, and water vapor starts to be supplied to the inlet of the compressor 1, and the compressor 1 starts to work. After the compressor 1 works, the water vapor is heated and pressurized by the compressor 1 to become high-temperature water vapor. After the compressor 1 is opened for a preset time, the motor reaches the highest speed and starts to operate stably, and the temperature of the high-temperature water vapor in the compressor 1 is also expected to reach the highest value. At this time, the first pump 61 is opened, and the third pipe section 33 delivers the water in the water tank 3 to the exhaust section of the compressor 1 to cool the high-temperature vapor in the unit and reasonably configure the liquid water in the water tank 3, which can not only cool the motor but also timely cool the high-temperature water vapor in the compressor 1.

[0085] In some embodiments, the compressor system further comprises a spraying member 5 arranged in the third pipe section 33, and the spraying member 5 is configured to spray the liquid water in the form of mist to the exhaust section of the compressor 1.

[0086] In the above embodiment, the spraying member 5 is arranged in the third pipe section 33, and the spraying member 5 sprays the liquid water in the form of mist to the water vapor heated and pressurized in the compressor 1. The atomized liquid water mixes with the high-temperature water vapor to cool the high-temperature water vapor, which can improve the cooling effect, and the cooled high-temperature water vapor is discharged from the outlet of the compressor 1. Among them, the proportion of the liquid water mist in the mixed high-temperature water vapor is relatively low, which only has a cooling effect on the high-temperature vapor in the unit, so that the high-temperature water vapor provided to the user meets the temperature requirement.

[0087] In some embodiments, the compressor system further comprises a second valve 72, a fourth pipe 40, and a third valve 73. The second valve 72 is arranged in the second pipe section 32, the fourth pipe 40 is connected to the first pipe 10 and the inlet of the compressor 1, and the third valve 73 is arranged in the fourth pipe 40. The second valve 72 and the third valve 73 are configured to open the second valve 72 preferentially to the third valve 73 in the system starting stage.

[0088] In the above embodiment, the second valve 72 is first opened, and the second pipe section 32 delivers the water in the water tank 3 to the compressor 1 to cool the motor of the compressor 1. When the opening time of the second valve 72 reaches a preset value, the third valve 73 is opened, and the first pipe 10 starts to supply water vapor to the inlet of the compressor 1 through the fourth pipe 40, and the compressor 1 starts to work. After the compressor 1 works, the water vapor is heated and pressurized by the compressor 1 to become high-temperature water vapor, which is discharged from the outlet of the compressor 1 to be provided to the user. The way of first cooling the motor and then making the compressor work can relieve the problem of damage to the motor of the compressor 1 due to excessively high temperature.

[0089] In some embodiments, the compressor system further comprises a fifth pipeline 50 connecting the compressor 1 and the cooling device 2, the fifth pipeline 50 being configured to direct the water cooled for the motor to the cooling device 2.

[0090] In the above embodiments, the water cooled for the motor is directed to the cooling device 2 through the fifth pipeline 50, the water cooled for the motor has a low temperature, and when the water is cooled by the cooling device 2, the energy consumption of the cooling device 2 can be reduced and the cooling efficiency can be improved.

[0091] In some embodiments, the compressor system further comprises a fourth valve 74 arranged in the first pipeline 10, the fourth valve 74 being configured to control the opening and closing of the first pipeline 10. When the fourth valve 74 is opened, the first pipeline 10 is connected, and when the fourth valve 74 is closed, the first pipeline 10 is disconnected.

[0092] In some embodiments, the compressor system further comprises a sixth pipeline 60 connected to the outlet of the compressor 1 and a fifth valve 75 arranged in the sixth pipeline 60. The sixth pipeline 60 is configured to discharge the water vapor pressurized and heated by the compressor 1 to provide the user. The fifth valve 75 is configured to control the opening and closing of the sixth pipeline 60. When the fifth valve 75 is opened, the sixth pipeline 60 is connected, and when the fifth valve 75 is closed, the sixth pipeline 60 is disconnected.

[0093] In some embodiments, the first valve 71 comprises a butterfly valve. Optionally, the butterfly valve comprises an electric butterfly valve.

[0094] In some embodiments, the second valve 72 comprises a stop valve.

[0095] In some embodiments, the third valve 73 comprises a butterfly valve. Optionally, the butterfly valve comprises an electric butterfly valve.

[0096] In some embodiments, the fourth valve 74 comprises a butterfly valve. Optionally, the butterfly valve comprises an electric butterfly valve.

[0097] In some embodiments, the fifth valve 75 comprises a butterfly valve. Optionally, the butterfly valve comprises an electric butterfly valve.

[0098] In some embodiments, the compressor comprises a steam compressor. Optionally, the steam compressor comprises a centrifugal steam compressor.

[0099] Some embodiments of the present disclosure further provide a control method of the above-mentioned compressor system, comprising the following steps:

[0100] The water vapor is provided to the inlet of the compressor 1 through the first pipeline 10, and the water vapor provided by the first pipeline 10 is heated and pressurized by the compressor 1;

[0101] Part of the water vapor in the first pipeline 10 is led to the cooling device 2 through the second pipeline 20, the water vapor delivered by the second pipeline 20 is cooled by the cooling device 2, and liquid water is formed.

[0102] The liquid water is led to the compressor 1 through the third pipeline 30 to cool the compressor 1.

[0103] In the above embodiment, the medium for cooling the compressor 1 is the water vapor led from the first pipeline 10, and the purity of the liquid condensed water formed after the water vapor is cooled by the cooling device 2 is very high, which greatly reduces the probability of dirt formation on the surface of the internal components of the compressor 1, maintains stable cooling effect, improves the energy efficiency of the compressor, and is also conducive to the output of pure water vapor by the compressor.

[0104] Moreover, since the water vapor is led from the first pipeline 10 to the cooling device 2, that is, the water vapor is led from the inlet of the compressor 1 to the cooling device 2, the temperature of the water vapor led is not very high, which can reduce the load of the cooling device 2 and improve the cooling effect.

[0105] Furthermore, since the water vapor is led from the first pipeline 10 to the cooling device 2, that is, the water vapor is led from the inlet of the compressor 1 to the cooling device 2, by controlling the flow of the first pipeline 10, the amount of water vapor entering the compressor 1 will not be affected, and the exhaust capacity of the compressor 1 will not be affected. Compared with the way of leading the water vapor from the inside of the compressor 1 to the cooling device 2 and then delivering it back to the compressor 1 for cooling, the embodiment of the present disclosure does not lose the water vapor that has been warmed and pressurized, and can improve the energy efficiency of the compressor.

[0106] In some embodiments, the liquid water is led to the compressor 1 through the third pipeline 30 to cool the compressor 1, including the following steps:

[0107] The liquid water is led to the water tank 3 through the first pipe section 31 of the third pipeline 30, and the water in the water tank 3 is led to the compressor 1 through the second pipe section 32 of the third pipeline 30.

[0108] In the above embodiment, by providing the water tank 2, the liquid water formed after the water vapor is cooled by the cooling device 2 can be stored in the water tank 2. When the amount of liquid water stored in the water tank 2 reaches a set amount, the liquid water can be provided to the compressor 1 to cool the compressor 1, which can alleviate the problem that the cooling device 2 cannot provide liquid water to the compressor 1 in time to cool the compressor 1 due to system fluctuations, thereby improving the energy efficiency of the compressor 1.

[0109] In some embodiments, part of the water vapor in the first pipeline 10 is led to the cooling device 2 through the second pipeline 20, including the following steps:

[0110] In the case that the first detecting element 41 located at the low position of the water tank 3 fails to detect the liquid level of the water tank 3, the second pipeline 20 is connected to the first pipeline 10 and the cooling device 2;

[0111] In the case that both the first detecting element 41 and the second detecting element 42 located at the high position of the water tank 3 detect the liquid level of the water tank 3, the second pipeline 20 is disconnected, so that the first pipeline 10 is not connected to the cooling device 2.

[0112] In the above embodiment, the first detecting element 41 is located at the low position of the water tank 3, and is used to detect whether the liquid level in the water tank 3 reaches the set value of the lowest liquid level. In the case that the first detecting element 41 fails to detect the liquid level in the water tank 3, it indicates that the liquid level in the water tank 3 is lower than the set value of the lowest liquid level, and at this time, there is not enough water in the water tank 3 to be sent to the compressor 1 for cooling. Therefore, the second pipeline 20 is connected to the first pipeline 10 and the cooling device 2, so that part of the water vapor in the first pipeline 10 is guided to the cooling device 2 through the second pipeline 20, and the water vapor is cooled by the cooling device 2 to form liquid water, which is then sent to the water tank 3, so as to store enough liquid water in the water tank 3 for cooling the compressor 1.

[0113] The second detecting element 42 is located at the high position of the water tank 3, and is used to detect whether the liquid level in the water tank 3 reaches the set value of the highest liquid level. In the case that the second detecting element 42 detects the liquid level in the water tank 3, it indicates that the water tank 3 has enough liquid water, or is already full of liquid water, and therefore, it is not necessary to continue to inject liquid water. Therefore, the second pipeline 20 is disconnected, so that the first pipeline 10 is not connected to the cooling device 2, and liquid water is not injected into the water tank 3, so as to prevent the liquid water in the water tank 3 from overflowing.

[0114] In some embodiments, the water in the water tank 3 is guided to the compressor 1 through the second pipe section 32 of the third pipeline 30, including the following steps:

[0115] In the case that the first detecting element 41 located at the low position of the water tank 3 detects the liquid level of the water tank 3, the water in the water tank 3 is guided to the compressor 1 through the second pipe section 32.

[0116] In the above embodiment, the first detecting element 41 is located at the low position of the water tank 3, and is used to detect whether the liquid level in the water tank 3 reaches the set value of the lowest liquid level. In the case that the first detecting element 41 detects the liquid level in the water tank 3, it indicates that the liquid level in the water tank 3 is higher than or equal to the set value of the lowest liquid level, and at this time, the water tank 3 has enough water to be sent to the compressor 1 for cooling. Therefore, the water in the water tank 3 can be guided to the compressor 1 through the second pipe section 32, so as to provide liquid water for cooling the compressor 1 and prevent dry pumping.

[0117] In some embodiments, the liquid water is guided to the compressor 1 through the third pipeline 30 for cooling the compressor 1, including:

[0118] In the system starting stage, the second pipe section 32 of the third pipe 30 is controlled to direct the liquid water to the motor of the compressor 1 to cool the motor, and then the first pipe 10 is controlled to provide the water vapor to the inlet of the compressor 1.

[0119] In the above embodiment, the second pipe section 32 of the third pipe 30 is controlled to direct the liquid water to the motor of the compressor 1 to cool the motor, and then the first pipe 10 is controlled to provide the water vapor to the inlet of the compressor 1, and the compressor 1 starts to work. After the water vapor is heated and pressurized by the work of the compressor 1, the high-temperature water vapor is discharged from the outlet of the compressor 1 to provide the user, which alleviates the problem of damage of the motor of the compressor 1 due to the excessively high temperature, and improves the sustainability and stability of the work of the compressor 1.

[0120] In some embodiments, after the first pipe 10 is controlled to provide the water vapor to the inlet of the compressor 1, the method further includes:

[0121] The third pipe section 33 of the third pipe 30 is controlled to direct the liquid water to the exhaust section of the compressor 1.

[0122] In the above embodiment, the second pipe section 32 of the third pipe 30 is controlled to direct the liquid water to the motor of the compressor 1 to cool the motor, which alleviates the problem of damage of the motor of the compressor 1 due to the excessively high temperature; and then the first pipe 10 is controlled to provide the water vapor to the inlet of the compressor 1, and the compressor 1 starts to work. After the water vapor is heated and pressurized by the work of the compressor 1, the high-temperature water vapor is discharged from the outlet of the compressor 1 to provide the user, which alleviates the problem of damage of the motor of the compressor 1 due to the excessively high temperature, and improves the sustainability and stability of the work of the compressor 1.

[0123] In some embodiments, the compressor system further includes a controller configured to implement the control method of the compressor system in any of the above embodiments.

[0124] In some embodiments, the controller can be electrically connected to the compressor 1, the cooling device 2, the first detection element 41, the second detection element 42, the spraying element 5, the first pump 61, the second pump 62, the first valve 71, the second valve 72, the third valve 73, the fourth valve 74, and the fifth valve 75.

[0125] The following will be described in detail with reference to the accompanying drawings. Figure 1 Some specific embodiments of the compressor system are described in detail.

[0126] In some embodiments, the compressor system comprises a compressor 1, a cooling device 2, a water tank 3, a first detection element 41, a second detection element 42, a spraying element 5, a first pump 61, a second pump 62, a first valve 71, a second valve 72, a third valve 73, a fourth valve 74, a fifth valve 75, a first pipeline 10, a second pipeline 20, a third pipeline 30, a first pipe section 31, a second pipe section 32, a third pipe section 33, a fourth pipeline 40, a fifth pipeline 50, and a sixth pipeline 60.

[0127] When the compressor system starts, the cooling device 2, the fourth valve 74, the fifth valve 75, the second detection element 42, and the first detection element 41 are opened. When neither the second detection element 42 nor the first detection element 41 detects a signal, the first valve 71 is opened, and the water vapor supplied by the first pipeline 10 enters the cooling device 2 through the fourth valve 74 and the first valve 71 in sequence, and is discharged into the water tank 3 after being cooled into liquid water in the cooling device 2.

[0128] When the compressor system starts, and the first detection element 41 detects a signal, and the second detection element 42 does not detect a signal, the second pump 62 is opened, and the liquid water in the water tank 3 is pumped out by the second pump 62 and flows into the compressor 1 through the second valve 72 to cool the motor of the compressor 1. After cooling the motor, the water returns to the cooling device 2 through the fifth pipeline 50, is cooled by the cooling device 2, and is discharged into the water tank 3 again. In this stage, since the compressor 1 has not been started, there is no high-temperature steam inside the unit; the cooling cycle for the motor precedes the start of the compressor 1 to ensure that the motor of the compressor 1 can be cooled in the first time after the compressor 1 is started to prevent the motor of the compressor 1 from being damaged due to excessive temperature.

[0129] After the second pump 62 is opened for a first preset time, the third valve 73 is opened, and the water vapor supplied by the first pipeline 10 enters the inlet of the compressor 1 through the fourth valve 74 and the third valve 73 in sequence, is warmed and pressurized by the compressor 1 to become high-temperature water vapor, and is discharged from the sixth pipeline 60 through the fifth valve 75 for user use. The first preset time can be 5 minutes. After the second pump 62 is opened for 5 minutes, the cooling water in the motor cooling cycle has just completed a cycle, and the compressor starts to operate at this time. It takes about 3 to 4 minutes for the cooling water in the motor cooling cycle to complete a cycle, and therefore, the first preset time can be 5 minutes to ensure that the cooling water has completed a cycle.

[0130] After the third valve 73 is opened for a second preset time, the first pump 61 is opened, and the liquid water in the water tank 3 is extracted by the first pump 61, atomized by the spraying part 5, and then enters the exhaust section of the compressor 1, mixes with the high-temperature steam inside the unit, cools the high-temperature steam inside the unit, and is discharged from the sixth pipe 60 together with the high-temperature steam through the fifth valve 75 for use by the user. The second preset time can be 5 minutes. After the compressor 1 is started, the speed of the motor slowly rises, and the compressor 1 and the third valve 73 are started at the same time. After the compressor 1 is started for 5 minutes, the motor is expected to reach the highest speed and start stable operation, and at this time, the high-temperature water vapor inside the compressor 1 is also expected to reach the highest temperature. At this time, the first pump 61 is started to cool the high-temperature steam inside the unit.

[0131] When the second detection element 42 and the first detection element 41 both detect a signal, the first valve 71 is closed, and the unit stops supplying pure water vapor to the cooling device 2. At this time, the first pump 61 and the second pump 62 are both started.

[0132] The compressor system provided by the embodiments of the present disclosure can control the opening degree of the third valve 73 and the first valve 71 at the inlet of the compressor 1 and the start and stop of the first pump 61 and the second pump 62 according to the signals received by the high-level and low-level detection elements located at the water tank 2, so as to supply pure cooling water to the motor cooling system and the internal spraying cooling system of the compressor 1, maintain stable cooling effect, and ensure that the compressor can output pure water vapor.

[0133] Based on the above embodiments of the present disclosure, the technical features of one of the embodiments can be beneficially combined with one or more of the other embodiments without explicit negation or conflict.

[0134] Although some specific embodiments of the present disclosure have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A compressor system, characterized in that, include: The first pipeline (10) is configured to supply steam; A compressor (1) has its inlet connected to the first pipeline (10), and the compressor (1) is configured to heat and pressurize the water vapor supplied by the first pipeline (10); A second pipe (20) is connected to the first pipe (10), and the second pipe (20) is configured to draw out a portion of the water vapor in the first pipe (10); A cooling device (2) is connected to the second pipe (20), and the cooling device (2) is configured to cool the water vapor drawn out from the second pipe (20) to form liquid water; as well as A third pipe (30) is connected to the cooling device (2) and the compressor (1), and the third pipe (30) is configured to direct the liquid water to the compressor (1) to cool the compressor (1); The sixth pipe (60), connected to the outlet of the compressor (1), is configured to discharge the water vapor after the compressor (1) has been pressurized and heated; A fifth valve (75) is provided in the sixth pipeline (60) and is configured to control the opening and closing of the sixth pipeline (60).

2. The compressor system according to claim 1, characterized in that, It also includes a water tank (3), and the third pipeline (30) includes a first pipe section (31) and a second pipe section (32), the first pipe section (31) connecting the cooling device (2) and the water tank (3), and the second pipe section (32) connecting the water tank (3) and the compressor (1).

3. The compressor system according to claim 2, characterized in that, It also includes a first detection element (41), a second detection element (42) and a first valve (71). The first detection element (41) is located at the lower position of the water tank (3), and the second detection element (42) is located at the higher position of the water tank (3). The first valve (71) is located in the second pipeline (20). The first valve (71) is configured to open when the first detection element (41) does not detect the liquid level in the water tank (3) so that the second pipeline (20) connects the first pipeline (10) and the cooling device (2). The first valve (71) is configured to close when both the first detection element (41) and the second detection element (42) detect the liquid level in the water tank (3) to disconnect the second pipeline (20).

4. The compressor system according to claim 2, characterized in that, It also includes a first detection element (41) and a second valve (72), wherein the first detection element (41) is located at the lower position of the water tank (3); and the second valve (72) is located at the second pipe section (32). The second valve (72) is configured to open when the first detection element (41) detects the liquid level in the water tank (3) to connect the water tank (3) and the compressor (1).

5. The compressor system according to claim 2, characterized in that, The compressor (1) includes a motor, and the second pipe section (32) is connected to the area where the motor is located so that the liquid water cools the motor.

6. The compressor system according to claim 5, characterized in that, The third pipeline (30) also includes a third pipe section (33), which connects the water tank (3) and the exhaust section of the compressor (1) so that the liquid water cools the water vapor heated and pressurized by the compressor (1).

7. The compressor system according to claim 6, characterized in that, It also includes a second valve (72) and a first pump (61), the second valve (72) being located in the second pipe section (32) and the first pump (61) being located in the third pipe section (33), the second valve (72) and the first pump (61) being configured such that, during the system startup phase, the second valve (72) opens before the first pump (61).

8. The compressor system according to claim 7, characterized in that, It also includes a fourth pipeline (40) and a third valve (73), the fourth pipeline (40) being connected to the first pipeline (10) and the inlet of the compressor (1), the third valve (73) being located in the fourth pipeline (40), the second valve (72), the third valve (73) and the first pump (61) being configured such that, during the system startup phase, the second valve (72) opens preferentially over the third valve (73), and the third valve (73) opens preferentially over the first pump (61).

9. The compressor system according to claim 6, characterized in that, It also includes a spray element (5) disposed on the third pipe section (33) and configured to spray the liquid water in a mist toward the exhaust section of the compressor (1).

10. The compressor system according to claim 5, characterized in that, It also includes a second valve (72), a fourth pipeline (40) and a third valve (73), the second valve (72) being located in the second pipeline segment (32), the fourth pipeline (40) being connected to the first pipeline (10) and the inlet of the compressor (1), and the third valve (73) being located in the fourth pipeline (40). The second valve (72) and the third valve (73) are configured such that, during the system startup phase, the second valve (72) opens before the third valve (73).

11. The compressor system according to claim 5, characterized in that, It also includes a fifth pipe (50) that connects the compressor (1) and the cooling device (2), and the fifth pipe (50) is configured to direct water after cooling the motor to the cooling device (2).

12. A control method for a compressor system according to any one of claims 1 to 11, comprising the following steps: Water vapor is supplied to the inlet of the compressor (1) through the first pipeline (10), and the water vapor supplied by the first pipeline (10) is heated and pressurized by the compressor (1); A portion of the water vapor in the first pipe (10) is directed to the cooling device (2) through the second pipe (20), and the water vapor transported by the second pipe (20) is cooled by the cooling device (2) to form liquid water; as well as The liquid water is directed to the compressor (1) through the third pipe (30) to cool the compressor (1).

13. The control method for the compressor system according to claim 12, wherein, The process of directing the liquid water to the compressor (1) through the third pipe (30) to cool the compressor (1) includes the following steps: The liquid water is directed to the water tank (3) through the first section (31) of the third pipeline (30); Water in the water tank (3) is directed to the compressor (1) through the second section (32) of the third pipeline (30).

14. The control method for the compressor system according to claim 13, wherein, The step of directing a portion of the water vapor in the first pipe (10) to the cooling device (2) through the second pipe (20) includes the following steps: If the first detection element (41) located at the lower position of the water tank (3) fails to detect the liquid level of the water tank (3), the second pipeline (20) is connected to the first pipeline (10) and the cooling device (2). If both the first detection element (41) and the second detection element (42) located at a high position in the water tank (3) detect the liquid level of the water tank (3), the second pipeline (20) is disconnected.

15. The control method for the compressor system according to claim 13, wherein, The process of directing water from the water tank (3) to the compressor (1) via the second pipe section (32) of the third pipe (30) includes the following steps: When the first detection element (41) located at the lower position of the water tank (3) detects the liquid level of the water tank (3), the water tank (3) is connected to the compressor (1).

16. The control method for the compressor system according to claim 12, wherein, The process of directing the liquid water to the compressor (1) via the third pipe (30) to cool the compressor (1) includes: During the system startup phase, the second section (32) of the third pipeline (30) is first controlled to direct the liquid water to the motor of the compressor (1) to cool the motor; then the first pipeline (10) is controlled to supply water vapor to the inlet of the compressor (1).

17. The control method for the compressor system according to claim 16, wherein, The method of re-controlling the first pipeline (10) to supply steam to the inlet of the compressor (1) further includes: The third section (33) of the third pipeline (30) is controlled to direct the liquid water to the exhaust section of the compressor (1).

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