Blower

Abstract

A blower. The blower comprises: a box body, an electric motor (1), a control unit (6) and a compression unit (14), wherein a mounting cavity is formed in the box body; the electric motor (1), the control unit (6), and the compression unit (14) are arranged in the mounting cavity; a first air inlet (8) and a second air inlet (9), which penetrate a side wall of the box body, are formed in the side wall of the box body; the control unit (6) is in communication with the outside by means of the first air inlet (8); the electric motor (1) is in communication with the outside by means of the second air inlet (9); and the compression unit (14) is adapted to compress gas in the mounting cavity.

Description

blower

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to a patent application filed on May 23, 2022, with application number 202210564771.8 and named “Blower”, as well as priority to a patent application filed on May 23, 2022, with application number 202221252128.3 and named “Blower”, all of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of blowers, and in particular to a blower. Background Art

[0004] In related technologies, single-stage screw blowers have a complex structure with strict functional zoning, including the compressed gas inlet and channel, the motor and electrical control cabinet heat dissipation inlet, the oil cooling fan inlet, the whole machine fresh air inlet, and the whole machine hot air outlet. This structure maximizes energy efficiency, but it makes inefficient use of space. The excessive exposed grilles required for the air inlet and outlet allow the machine's operating noise to easily penetrate, requiring a large number of partitions for noise reduction. Even so, the noise reduction effect is still unsatisfactory.

[0005] In addition, traditional blowers require a separate air intake channel to enter the machine head, which also generates a lot of noise. And the separate air outlet channel design will increase the ambient temperature and cause environmental pollution.

[0006] Summary of the Invention

[0007] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present application proposes a blower capable of reducing the number of openings in a box.

[0008] The blower according to the embodiment of the present application includes: a box body, an installation cavity is formed in the box body, and a first air inlet and a second air inlet that pass through the side walls of the box body are provided on the side walls of the box body; a control unit, the control unit is arranged in the installation cavity, and the control unit is suitable for communicating with the outside world through the first air inlet; a motor, the motor is arranged in the installation cavity, the control unit is at least used to control the operation of the motor, and the motor is suitable for communicating with the outside world through the second air inlet; a compression unit, the motor is suitable for driving the compression unit to work, and the compression unit is suitable for compressing the gas in the installation cavity.

[0009] According to the blower of the embodiment of the present application, a first air inlet and a second air inlet are provided on the side wall of the box body, and the number of openings is relatively small, which is beneficial to reducing the noise transmitted from the inside of the box body to the outside.

[0010] According to some embodiments of the present application, the side wall of the box body includes a first end plate and a second end plate arranged opposite to each other, the first air inlet is opened on the first end plate, and the second air inlet is opened on the second end plate.

[0011] According to some embodiments of the present application, a control fan is provided on the side of the first air inlet facing the control unit.

[0012] According to some embodiments of the present application, the control unit further has a control heat dissipation outlet communicated with the installation cavity, and the control heat dissipation outlet is located on a side of the control unit away from the first air inlet.

[0013] According to some embodiments of the present application, the blower also includes a motor fan, which is used to cool the motor, and the motor fan is arranged between the motor and the second air inlet. The axis of the motor fan is coaxial with the axis of the motor, and the axis of the motor fan is staggered with the center of the second air inlet.

[0014] According to some embodiments of the present application, a motor hood is provided between the motor fan and the second air inlet, and an air inlet channel is formed in the motor hood.

[0015] According to some embodiments of the present application, the blower further includes: an oil tank, which is located below the motor and supports the motor.

[0016] According to some embodiments of the present application, the blower further includes: a gas filter, which is connected to the compression unit, and the gas filter is used to absorb the gas in the installation cavity and send the filtered gas into the compression unit for compression.

[0017] According to some embodiments of the present application, a sound insulation baffle is provided between the gas filter and the side wall of the box body.

[0018] According to some embodiments of the present application, a compressed gas outlet is provided on the side wall of the box body and passes through the side wall of the box body, and the compressed gas outlet of the compression unit is connected to the compressed gas outlet; the blower also includes: a muffler, which is arranged between the outlet of the compression unit and the compressed gas outlet.

[0019] According to some embodiments of the present application, the motor is suitable for driving the compression unit to work through a transmission system, and the blower also includes: an oil cooler and an oil cooling fan, the oil cooler is used to cool the lubricating oil passing through the transmission system, and the oil cooling fan is used to air cool the oil cooler, and a third air inlet is provided on the side wall of the box body, which passes through the side wall of the box body, and the oil cooling fan is connected to the outside world through the third air inlet.

[0020] According to some embodiments of the present application, the box body includes: a ceiling, a bottom plate, a first side panel and a second side panel arranged opposite to each other, a first end panel and a second end panel arranged opposite to each other, the first side panel, the first end panel, the second side panel, and the second end panel are arranged in sequence, the ceiling covers the top of the first side panel, the first end panel, the second side panel, and the second end panel, the bottom plate covers the bottom of the first side panel, the first end panel, the second side panel, and the second end panel, the first air inlet is opened on the first end panel, and the second air inlet and the third air inlet are opened on the second end panel.

[0021] According to some embodiments of the present application, the control unit includes: an electrical control cabinet and a control panel, the control panel is electrically connected to the electrical control cabinet, the first end plate includes: a first end plate body and a first end door panel, the first end plate body is adjacent to the second side panel, the first end door panel is adjacent to the first side panel, the electrical control cabinet is arranged on the side of the first end door panel facing the installation cavity, the first air inlet is opened on the first end door panel, and the first end door panel is also provided with an installation port for exposing the control panel.

[0022] According to some embodiments of the present application, the motor and the compression unit are both located on a side of the first end plate body facing the installation cavity.

[0023] According to some embodiments of the present application, the first side panel includes a first front side door and a first rear side door, the first front side door is adjacent to the first end plate, the first rear side door is adjacent to the second end plate, the compression unit is located on the side of the first front side door facing the installation cavity, and the motor is located on the side of the first rear side door facing the installation cavity.

[0024] According to some embodiments of the present application, a compressed gas outlet is provided on the second end plate, and the compressed gas outlet of the compression unit is connected to the compressed gas outlet.

[0025] According to some embodiments of the present application, air inlet grilles are provided at the first air inlet, the second air inlet, and the third air inlet.

[0026] According to some embodiments of the present application, the blower also includes a motor fan, which is used to cool the motor, and the motor fan is arranged between the motor and the second air inlet. A control fan is provided on the side of the first air inlet facing the control unit.

[0027] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a side view of the blower with the first side plate removed;

[0029] FIG2 is a front view of the blower;

[0030] FIG3 is a perspective schematic diagram of a blower according to an embodiment with the first side panel removed;

[0031] FIG4 is a perspective schematic diagram of a blower according to an embodiment with the second side panel removed;

[0032] FIG5 is a perspective schematic diagram of the blower from another perspective with the second side panel removed;

[0033] FIG6 is a perspective schematic diagram of a blower;

[0034] FIG7 is a perspective schematic diagram of the blower from another perspective;

[0035] FIG8 is a top view of the blower with the roof removed;

[0036] FIG9 is a perspective schematic diagram of a sound insulation baffle;

[0037] FIG10 is a perspective schematic diagram of a blower according to another embodiment with the first side plate removed;

[0038] FIG11 is a perspective schematic diagram of a blower according to another embodiment with the second side panel removed.

[0039] Figure numerals: Motor 1, motor fan 2, oil cooler 3, oil cooling fan 4, muffler 5, control unit 6, electric control cabinet 61, control panel 62, first end plate 71, first end door panel 711, first end plate body 712, second end plate 72, first air inlet 8, second air inlet 9, third air inlet 10, control heat dissipation outlet 11, gas filter 12, sound insulation baffle 13, first baffle 131, second baffle 132, sound-absorbing cotton 133, sheet metal frame 134, compression unit 14, oil tank 15, ceiling 16, first side panel 17, first front side door 171, first rear side door 172, second side panel 18, second front side door 181, second rear side door 182, compressed gas outlet 19. DETAILED DESCRIPTION

[0040] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0041] In the description of this application, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0043] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0044] The blower according to an embodiment of the present application is described in detail below with reference to Figures 1 to 11.

[0045] 1-2 , 4 , and 8 , the blower according to an embodiment of the present application may include: a housing, a control unit 6 , a motor 1 , and a compression unit 14 .

[0046] Among them, an installation cavity is formed in the box body. As shown in Figures 2 to 4, a first air inlet 8 and a second air inlet 9 are provided on the side wall of the box body. The first air inlet 8 and the second air inlet 9 both pass through the side wall of the box body. That is to say, the first air inlet 8 and the second air inlet 9 connect the inside of the box body with the outside of the box body, and the external air can enter the installation cavity inside the box body through the first air inlet 8 and the second air inlet 9.

[0047] In some embodiments of the present application, referring to Figures 1-2 and 5-6, the control unit 6 may include: an electrical control cabinet 61 and a control panel 62. The electrical control cabinet 61 has built-in electrical components such as a frequency converter, and the control panel 62 is electrically connected to the electrical control cabinet 61. A monitoring system may be integrated in the control unit 6 to monitor various working parameters of the blower. For example, the monitoring system may include warning information, maintenance plans, and online visual displays of machine status.

[0048] 1-4 , a control unit 6 is disposed within the mounting cavity and communicates with the outside world (i.e., the exterior of the enclosure) via a first air inlet 8 on an electrical control cabinet 61. The control unit 6 is configured to at least control the operation of the motor 1. In some embodiments, a user can control the motor 1 by setting relevant parameters of the control unit 6 via a control panel 62. Furthermore, the control unit 6 can dissipate heat through the first air inlet 8, thereby preventing damage to the control unit 6 due to excessive operating temperatures.

[0049] 1, 3, and 4, the motor 1 is connected to the outside world through the second air inlet 9. The motor fan 2 is used to cool the motor 1. When the motor fan 2 is in operation, it can guide the outside air through the second air inlet 9 to the motor 1, thereby dissipating heat from the motor 1 and preventing damage caused by excessive operating temperature.

[0050] 4-5 , the compression unit 14 is disposed in the installation cavity. The motor 1 is adapted to drive the compression unit 14 to operate. The compression unit 14 is adapted to compress the gas in the installation cavity.

[0051] According to the blower of the embodiment of the present application, a first air inlet 8 and a second air inlet 9 are provided on the side wall of the box body, and no other air inlets and outlets are provided. For example, a cold air inlet and a hot air outlet are no longer provided. The number of openings is small, which is beneficial to reducing the noise transmitted from the inside of the box body to the outside. At the same time, the structure is simplified, which is beneficial to reducing the installation and subsequent maintenance costs, and can better ensure the stable operation of the blower in a low temperature environment.

[0052] In some embodiments of the present application, as shown in Figures 1, 6, and 11, the side wall of the box includes a first end plate 71 and a second end plate 72 arranged opposite each other. The first air inlet 8 is provided on the first end plate 71, and the second air inlet 9 is provided on the second end plate 72. In this way, the first air inlet 8 and the second air inlet 9 are arranged opposite each other, with minimal interference and without interfering with the heat dissipation effect of each end. In addition, the center of the first air inlet 8 and the center of the second air inlet 9 are not on the same straight line, which is beneficial to the heat dissipation of the motor 1 and the control unit 6, and the cold and hot air at both ends of the blower flow in different spaces.

[0053] In some embodiments of the present application, the first air inlet 8 is directly opposite the control unit 6, and a control fan is provided on the side of the first air inlet 8 facing the control unit 6. When the control fan is in operation, it can guide the outside air through the first air inlet 8 to the control unit 6, thereby dissipating heat from the control unit 6. By providing the control fan, the air circulation speed in the control unit 6 can be increased, thereby removing more heat from the surrounding area of ​​the control unit 6 and reducing the operating temperature of the control unit 6 (mainly electrical components such as the inverter).

[0054] In some embodiments, the control fan can also be integrated with filters such as air filter cotton to filter the air entering from the first air inlet 8, ensuring that the air entering and cooling the inverter and other electrical components of the control unit 6 does not contain particulate pollutants, which is beneficial to extending the service life of the inverter and other electrical components.

[0055] In some embodiments of the present application, as shown in Figures 1 and 3, the control unit 6 also has a control heat dissipation port 11, which is connected to the installation cavity. In this way, the heat generated by the control unit 6 when it is working can enter the installation cavity through the control heat dissipation port 11, and the air coming in from the first air inlet 8 directly blows on the control unit 6, taking away the heat of the control unit 6. This part of the heat enters the installation cavity through the control heat dissipation port 11. As shown in Figures 3 and 10, the control heat dissipation port 11 is opened near the top of the electric control cabinet 61. Because the air carrying the heat of the control unit 6 is hot air, which is lighter, the control heat dissipation port 11 is set near the top, which is conducive to the hot air in the electric control cabinet 61 to enter the installation cavity upward from the control heat dissipation port 11.

[0056] The control heat dissipation port 11 is located on the side of the control unit 6 away from the first air inlet 8. In this way, the control heat dissipation port 11 is not directly opposite the first air inlet 8, which can prevent the air entering from the first air inlet 8 from directly blowing onto the control heat dissipation port 11 and affecting the discharge of heat inside the control unit 6 into the installation cavity.

[0057] In some embodiments of the present application, as shown in Figures 3-5 and 10-11, the blower further includes a motor fan 2, which is disposed within the mounting cavity. The motor fan 2 is used to cool the motor 1. When the motor fan 2 is operating, it can quickly direct external air through the second air inlet 9 to the motor 1, thereby dissipating heat from the motor 1 more quickly and preventing damage caused by excessive operating temperature of the motor 1. The axis of the motor fan 2 is coaxial with the axis of the motor 1.

[0058] In some embodiments, as shown in Figures 10-11, the axis of the motor fan 2 is staggered with the center of the second air inlet 9, so that the path between the second air inlet 9 and the motor fan 2 is tortuous, which can reduce the air intake noise at the second air inlet 9.

[0059] In other embodiments of the present application, as shown in Figures 3 to 5 , the second air inlet 9 is directly opposite the motor fan 2. When the motor fan 2 is in operation, it can guide the outside air into the installation cavity through the second air inlet 9, thereby dissipating heat from the components in the installation cavity. When the motor fan 2 is in operation, it can increase the air circulation speed in the installation cavity, thereby removing more heat from the installation cavity and reducing the operating temperature of the blower.

[0060] In some embodiments of the present application, a motor hood is provided between the motor fan 2 and the second air inlet 9, and an air inlet channel is formed in the motor hood. This improves the operating efficiency of the motor fan 2, and allows the eddy current generated by the motor fan 2 during operation to directly act on the second air inlet 9, thereby accelerating the air flow at the second air inlet 9. When the heat dissipation demand increases, the air intake of the motor fan 2 will also increase to meet the actual heat dissipation demand.

[0061] In some embodiments of the present application, the motor 1 is adapted to drive the compression unit 14 via a transmission system. In some embodiments, the transmission system may be a gear transmission mechanism to achieve high transmission efficiency. In some embodiments, the transmission system may also be a belt transmission mechanism.

[0062] In some embodiments of the present application, the axis of the motor 1 and the axis of the transmission system can be arranged horizontally, which has a simple structure, low maintenance costs, and high transmission stability. In other embodiments, the axis of the motor 1 and the axis of the transmission system can also be arranged in a non-horizontal direction, thereby increasing the transmission ratio and the amount of compressed air.

[0063] The blower may also include an oil cooler 3 and an oil-cooling fan 4. The oil cooler 3 is used to cool the lubricating oil passing through the transmission system, thereby removing some of the heat from the transmission system and preventing the transmission system from being overheated for a long time. In addition, the lubricating oil lubricates the transmission system, reducing wear on the transmission system and extending its service life. The oil-cooling fan 4 is used to cool the oil cooler 3, thereby removing excess heat from the oil cooler 3. When the oil-cooling fan 4 is in operation, it can increase the air flow rate around the oil cooler 3, thereby removing more heat from the oil cooler 3 and reducing the operating temperature of the oil cooler 3. A third air inlet 10 is provided on the side wall of the housing. The third air inlet 10 extends through the side wall of the housing, that is, the third air inlet 10 connects the interior of the housing with the exterior of the housing. The oil-cooling fan 4 is adapted to communicate with the outside world through the third air inlet 10. External air can reach the oil-cooling fan 4 through the third air inlet 10 and then enter the mounting cavity within the housing. Specifically, when the oil cooling fan 4 is working, it can guide the outside air to the oil cooler 3 through the third air inlet 10, thereby dissipating heat from the oil cooler 3 and preventing the operating temperature of the oil cooler 3 from being too high and affecting the cooling effect of the lubricating oil.

[0064] Optionally, the third air inlet 10 is directly opposite the oil cooling fan 4. In this way, the eddy current generated by the oil cooling fan 4 during operation directly acts on the third air inlet 10, thereby accelerating the air flow at the third air inlet 10. The outside air also enters the installation cavity after passing through the fins of the oil cooler 3, thereby dissipating heat from the components in the installation cavity.

[0065] In some embodiments of the present application, the blower may further include an oil tank 15, which is located below the motor 1. A shock-absorbing pad (not shown) is provided between the oil tank 15 and the motor 1. The motor 1 is mounted on the oil tank 15 using fasteners such as bolts or rivets. The oil tank 15 can support the motor 1, eliminating the need for a separate motor support base.

[0066] In some embodiments of the present application, the blower may further include: an oil pump, which is integrated on the compression unit 14 and is used to drive the lubricating oil in the oil tank 15 to circulate to the transmission system.

[0067] In some optional embodiments, the third air inlet 10 and the second air inlet 9 can be integrated into one air inlet.

[0068] In some embodiments of the present application, as shown in FIG3 , the blower may further include a gas filter 12 connected to a compression unit 14. The gas filter 12 is configured to absorb hot gas within the installation cavity and deliver the filtered hot gas to the compression unit 14 for compression, thereby ensuring that the gas entering the compression unit 14 is clean and preventing impurities from entering and damaging the compression unit 14. The gas within the installation cavity can enter the compression unit 14 for compression after passing through the gas filter 12, and the compression unit 14 does not require a separate air intake channel.

[0069] In some embodiments of the present application, a sound insulation baffle 13 is provided between the gas filter 12 and the side wall of the box. As shown in FIG9 , the sound insulation baffle 13 may include sound-absorbing cotton 133 and a sheet metal frame 134. The thickness of the sound-absorbing cotton 133 may be 20 mm to 40 mm, for example, 30 mm. The surface of the sound-absorbing cotton 133 is covered with a PU film. The sound absorption coefficient of the sound-absorbing cotton 133 can reach more than 90% in the high frequency band. The sound-absorbing cotton 133 faces the gas filter 12. In other words, the sound-absorbing cotton 133 is located on the side of the sheet metal frame 134 facing the gas filter 12 to absorb and buffer the sound waves radiated thereto. The sheet metal frame 134 is fixed next to the gas filter 12 to reflect the sound waves that pass through the sound-absorbing cotton 133 back, thereby minimizing the sound wave energy from radiating out of the box.

[0070] As shown in Figures 3-5 , the sound insulation baffles 13 can be two, namely a first baffle 131 and a second baffle 132. The first baffle 131 is located at the front of the blower, and the second baffle 132 is located on the left side of the blower. The sound insulation baffles 13 can reduce the amount of noise transmitted from the gas filter 12 to the outside world, thereby further reducing blower noise.

[0071] In some embodiments of the present application, as shown in Figures 3-4, 7, and 10-11, a compressed gas outlet 19 is provided on the side wall of the housing. The compressed gas outlet 19 extends through the side wall of the housing, and the compressed gas outlet of the compression unit 14 is adapted to communicate with the compressed gas outlet 19. In actual use, the compressed gas outlet 19 is used to connect to pipelines of other equipment, thereby allowing other equipment to use the compressed gas generated by the blower. In other words, the motor 1 provides power to the compression unit 14, and the gas compressed by the compression unit 14 is discharged from the compressed gas outlet 19 for use by other equipment.

[0072] In some embodiments of the present application, as shown in Figures 3 to 5, the blower may further include: a muffler 5, which is arranged between the compressed gas outlet of the compression unit 14 and the compressed gas outlet 19. The muffler 5 is used to perform silencing treatment on the compressed gas coming out of the compressed gas outlet of the compression unit 14, thereby further reducing the noise of the blower.

[0073] In some embodiments of the present application, as shown in Figures 6-7, the box body may include: a ceiling 16, a bottom plate, a first side panel 17 and a second side panel 18 arranged opposite to each other, a first end panel 71 and a second end panel 72 arranged opposite to each other, the first side panel 17, the first end panel 71, the second side panel 18, and the second end panel 72 are arranged in sequence, the ceiling 16 covers the top of the first side panel 17, the first end panel 71, the second side panel 18, and the second end panel 72, the bottom plate covers the bottom of the first side panel 17, the first end panel 71, the second side panel 18, and the second end panel 72, the first air inlet 8 is opened on the first end panel 71, and the second air inlet 9 and the third air inlet 10 are opened on the second end panel 72.

[0074] The second side panel 18 is located on the left side of the blower, the first side panel 17 is located on the right side of the blower, the first end panel 71 is located at the front end of the blower, and the second end panel 72 is located at the rear end of the blower. The first side panel 17, the first end panel 71, the second side panel 18, and the second end panel 72 can be removable, thereby facilitating maintenance of components behind the corresponding side panel by removing the corresponding side panel.

[0075] The first end panel 71 may include: a first end panel body 712 and a first end door panel 711. The first end panel body 712 is adjacent to the second side panel 18, and the first end door panel 711 is adjacent to the first side panel 17. The electric control cabinet 61 is arranged on the side of the first end door panel 711 facing the installation cavity. In other words, the electric control cabinet 61 is located on the right side of the blower and directly behind the first end door panel 711. In this way, by opening the first end door panel 711, the electric control cabinet 61 on the rear side can be repaired and maintained. The first air inlet 8 is opened on the first end door panel 711. The first end door panel 711 also has an installation opening. The installation opening allows the control panel 62 to be exposed, making it convenient for the user to operate the control panel 62. In other words, the user can perform related operations on the control panel 62 from outside the box.

[0076] In some embodiments of the present application, the motor 1, the motor fan 2, and the compression unit 14 are all located on the side of the first end plate body 712 facing the installation cavity. In other words, the motor 1, the motor fan 2, and the compression unit 14 are all located on the left side of the blower.

[0077] In some embodiments of the present application, the first side panel 17 may include a first front door 171 and a first rear door 172, wherein the first front door 171 is located in front of the first rear door 172, the first front door 171 is adjacent to the first end panel 71, and the first rear door 172 is adjacent to the second end panel 72. The compression unit 14 is located on the side of the first front door 171 facing the installation cavity, and the motor 1 and the motor fan 2 are located on the side of the first rear door 172 facing the installation cavity. In other words, the compression unit 14 is located on the front side of the blower, and the motor 1 and the motor fan 2 are located on the rear side of the blower.

[0078] In some embodiments of the present application, the second side panel 18 may include a second front side door 181 and a second rear side door 182, the second front side door 181 is located in front of the second rear side door 182, the second front side door 181 is adjacent to the first end panel 71, and the second rear side door 182 is adjacent to the second end panel 72.

[0079] In some embodiments of the present application, the compressed gas outlet 19 is opened on the second end plate 72, that is, the compressed gas outlet 19 is located on the rear side of the blower. In this way, the blower is more beautiful, and the compressed gas outlet 19 is connected to other equipment from the rear side of the blower. It can also prevent the gas leaked from the compressed gas outlet 19 from directly blowing to users on the front, left and right sides of the blower when a pipeline leak occurs, which is beneficial to improving the safety of the use of the blower.

[0080] In some embodiments of the present application, air inlet grilles are provided at the first air inlet 8, the second air inlet 9, and the third air inlet 10. The air inlet grilles provide protection at the first air inlet 8, the second air inlet 9, and the third air inlet 10, preventing users from colliding with components within the housing while passing through the first air inlet 8, the second air inlet 9, and the third air inlet 10, thereby ensuring the safety of the blower. Furthermore, due to the reduced number of openings, the number of air inlet grilles is also reduced, which reduces the labor required to assemble the air inlet grilles with the housing.

[0081] In some embodiments of the present application, the blower further includes a motor fan 2, which is used to cool the motor 1, and the motor fan 2 is arranged between the motor 1 and the second air inlet 9. When the motor fan 2 is working, it can quickly guide the outside air through the second air inlet 9 to the motor 1, thereby dissipating the heat of the motor 1 faster and preventing the motor 1 from being damaged due to excessive operating temperature. The axis of the motor fan 2 is coaxially arranged with the axis of the motor 1. A control fan is provided on the side of the first air inlet 8 facing the control unit 6. When the control fan is working, it can guide the outside air through the first air inlet 8 to the control unit 6, thereby dissipating the heat of the control unit 6. By providing the control fan, the air circulation speed at the control unit 6 can be increased, thereby taking away more heat around the control unit 6 and reducing the operating temperature of the control unit 6 (mainly electrical components such as the inverter).

[0082] The following is an overall description of the working conditions of the blower according to an embodiment of the present application.

[0083] The motor fan 2 coaxial with the motor 1 obtains external cold air through the second air inlet 9. After the cold air absorbs the heat of the motor 1, since the first side panel 17 and the ceiling 16 have no openings and are both closed designs, the cold air cools the motor 1 and becomes hot air and remains in the installation cavity.

[0084] The control unit 6 draws in fresh air through the first air inlet 8 on the first end plate 71 to dissipate heat from the inverter and electronic components, and then the hot air is discharged into the installation cavity through the control heat dissipation port 11 .

[0085] The oil cooling fan 4 at the front end of the oil cooler 3 draws in fresh air through the third air inlet 10, takes away the heat of the lubricating oil after the oil cooling, and the hot air also enters the installation cavity.

[0086] Hot air is directly absorbed by the gas filter 12. Testing has shown that the temperature of the air entering the gas filter 12 is 8-10°C higher than the ambient air temperature. After impurities are filtered out, the air enters the compression unit 14 for compression. It then passes through the muffler 5 to reduce pressure fluctuations, and finally, the compressed air is delivered to other systems through the compressed gas outlet 19. A first baffle 131 and a second baffle 132 are positioned around the gas filter 12, near the first side panel 17, to reduce noise at the source.

[0087] The layout of the blower according to the embodiment of the present application can maintain the required flow rate and energy efficiency level, and at the same time can reduce the noise amplitude of the whole machine by 8-9dB(A). After calculating the air intake of the whole machine, the amount of gas required for compressed air can be met by the air intake of the first air inlet 8 and the second air inlet 9, and there will be no back pressure (the appearance of back pressure will cause insufficient cooling of the motor or lubricating oil). After adding the third air inlet 10, the air intake is further met, and there will be no back pressure. The overall sealing of the box is good, with only a small amount of air inlet grille exposed, which is conducive to reducing the way for sound to radiate outside the box during the operation of the blower. The blower has a compact structure and higher integrity. When used under normal conditions, it does not require an additional rainproof and dustproof cover.

[0088] According to the blower of the embodiment of the present application, the fuselage only retains three air inlets (i.e., the first air inlet 8, the second air inlet 9, and the third air inlet 10), and the separate air inlet channel for compressed air and the hot air outlet of the entire machine are removed.

[0089] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0090] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A blower comprising: A box body, a motor (1), a control unit (6) and a compression unit (14), wherein an installation cavity is formed in the box body, and the motor (1), the control unit (6) and the compression unit (14) are arranged in the installation cavity, wherein a first air inlet (8) and a second air inlet (9) penetrating the box body side wall are provided, the control unit (6) is connected to the outside world through the first air inlet (8), and the motor (1) is connected to the outside world through the second air inlet (9), and the compression unit (14) is suitable for compressing the gas in the installation cavity.

2. The blower according to claim 1, wherein The side wall of the box body comprises a first end plate (71) and a second end plate (72) arranged opposite to each other, the first air inlet (8) is provided on the first end plate (71), and the second air inlet (9) is provided on the second end plate (72).

3. The blower according to claim 1 or 2, wherein: A control fan is provided on the side of the first air inlet (8) facing the control unit (6).

4. The blower according to any one of claims 1 to 3, wherein: The control unit (6) further comprises a control heat dissipation port (11) in communication with the installation cavity, and the control heat dissipation port (11) is located on a side of the control unit (6) facing away from the first air inlet (8).

5. The blower according to any one of claims 1 to 4, wherein: The blower further comprises a motor fan (2), the motor fan (2) being used for air cooling the motor (1), and the motor fan (2) being arranged between the motor (1) and the second air inlet (9), the axis of the motor fan (2) being coaxial with the axis of the motor (1), and the axis of the motor fan (2) being staggered with the center of the second air inlet (9).

6. The blower according to claim 5, wherein A motor fan cover is provided between the motor fan (2) and the second air inlet (9), and an air inlet channel is formed in the motor fan cover.

7. The blower according to any one of claims 1 to 6, wherein: The blower further comprises an oil tank (15), wherein the oil tank (15) is located below the motor (1) and supports the motor (1).

8. The blower according to any one of claims 1 to 7, wherein: The blower further comprises: a gas filter (12), the gas filter (12) being connected to the compression unit (14), the gas filter (12) being used to absorb the gas in the installation cavity and to send the filtered gas into the compression unit (14) for compression.

9. The blower according to claim 8, wherein A sound insulation baffle (13) is provided between the gas filter (12) and the side wall of the box body.

10. The blower according to any one of claims 1 to 9, wherein: A compressed gas outlet (19) is provided on the side wall of the box body and passes through the side wall of the box body, and the compressed gas outlet of the compression unit (14) is connected to the compressed gas outlet (19); The blower further comprises a muffler (5), wherein the muffler (5) is arranged between the compressed gas outlet of the compression unit (14) and the compressed gas outlet (19).

11. The blower according to claim 1 or 2, wherein: The motor (1) is suitable for driving the compression unit (14) to work through a transmission system. The blower further comprises: an oil cooler (3) and an oil cooling fan (4). The oil cooler (3) is used to cool the lubricating oil passing through the transmission system. The oil cooling fan (4) is used to air cool the oil cooler (3). A third air inlet (10) penetrating the side wall of the box body is provided on the side wall of the box body. The oil cooling fan (4) is connected to the outside world through the third air inlet (10).

12. The blower according to claim 11, wherein The box body comprises: a ceiling (16), a bottom plate, a first side plate (17) and a second side plate (18) arranged opposite to each other, a first end plate (71) and a second end plate (72) arranged opposite to each other, the first side plate (17), the first end plate (71), the second side plate (18), and the second end plate (72) being arranged in sequence, the ceiling (16) covers the tops of the first side plate (17), the first end plate (71), the second side plate (18), and the second end plate (72), the bottom plate covers the bottoms of the first side plate (17), the first end plate (71), the second side plate (18), and the second end plate (72), the first air inlet (8) is opened on the first end plate (71), and the second air inlet (9) and the third air inlet (10) are opened on the second end plate (72).

13. The blower according to claim 12, wherein The control unit (6) includes: an electric control cabinet (61) and a control panel (62), wherein the control panel (62) is electrically connected to the electric control cabinet (61), and the first end plate (71) includes: a first end plate body (712) and a first end door plate (711), wherein the first end plate body (712) is adjacent to the second side plate (18), and the first end door plate (711) is adjacent to the first side plate (17), and the electric control cabinet (61) is arranged on a side of the first end door plate (711) facing the installation cavity, and the first air inlet (8) is opened on the first end door plate (711), and the first end door plate (711) is also provided with an installation opening for exposing the control panel (62).

14. The blower according to claim 13, wherein The motor (1) and the compression unit (14) are both located on a side of the first end plate body (712) facing the installation cavity.

15. The blower according to any one of claims 12 to 14, wherein: The first side panel (17) includes a first front side door (171) and a first rear side door (172), wherein the first front side door (171) is adjacent to the first end panel (71), and the first rear side door (172) is adjacent to the second end panel (72), the compression unit (14) is located on the side of the first front side door (171) facing the installation cavity, and the motor (1) is located on the side of the first rear side door (172) facing the installation cavity.

16. The blower according to any one of claims 12 to 15, wherein: A compressed gas outlet (19) is provided on the second end plate (72), and the compressed gas outlet of the compression unit (14) is in communication with the compressed gas outlet (19).

17. The blower according to any one of claims 11 to 16, wherein: The first air inlet (8), the second air inlet (9) and the third air inlet (10) are all provided with air inlet grids.

18. The blower according to any one of claims 11 to 17, wherein: The blower further comprises a motor fan (2), the motor fan (2) being used for cooling the motor (1), and the motor fan (2) being arranged between the motor (1) and the second air inlet (9), and a control fan being arranged on the side of the first air inlet (8) facing the control unit (6).

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