Centrifugal fan

Abstract

The utility model provides a centrifugal fan, and relates to the technical field of fans. An electrical shell of the centrifugal fan is arranged above a motor shell of the centrifugal fan, and a circuit control board and a maintenance assembly are arranged in the electrical shell. The maintenance assembly comprises a packaging box body and a wiring circuit board, a plurality of plugging terminals are arranged on two opposite end portions of the wiring circuit board along corresponding end portion contours, the plugging terminals at the same end portion are distributed in a single row, and the two rows of plugging terminals are communicated in a one-to-one correspondence mode. The two rows of plugging terminals are respectively embedded in two opposite first side plates of the packaging box body in a one-to-one correspondence manner; the plurality of plugging terminals located at the first end of the wiring circuit board are used for connecting a circuit control board, and the plurality of plugging terminals located at the second end of the wiring circuit board are used for connecting a power supply module, acquisition equipment and serial port equipment. According to the embodiment of the invention, the overhauling efficiency and the maintenance convenience of the centrifugal fan can be improved.

Description

Technical Field

[0001] The embodiments of the present application relate to but are not limited to the field of fan technology, and in particular to a centrifugal fan. Background Art

[0002] Centrifugal fans are often used in scenarios such as breeding, papermaking, sewage treatment, etc. that require increased oxygen or increased pressure. In the prior art, in order to adapt to automated management, centrifugal fans are equipped with multiple functional devices such as multiple sensors and networking functions, and are controlled through a unified circuit control board. In actual applications, in order to facilitate the maintenance of centrifugal fans, a terminal block is added to each functional device and the circuit control board, so that each functional device can be physically cut off through the terminal block and the cause of the fault can be checked separately. However, this method will cause the circuit to be complicated. Although a packaging box will be provided to fix the terminal block and related circuits, in actual applications, due to the large number of circuits, there will be electromagnetic interference between each other, and during maintenance, the entire terminal block needs to be maintained while managing the line. When the terminal block fails, replacement is more complicated. Therefore, the maintenance and inspection efficiency is low and the maintenance convenience is insufficient. Utility Model Content

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of protection of the claims. The present application embodiment provides a centrifugal fan, which can improve the inspection efficiency and maintenance convenience of the centrifugal fan.

[0004] The centrifugal fan proposed in the embodiment of the present application includes:

[0005] A motor housing, wherein the motor housing is used to install a fan body;

[0006] An electrical shell, wherein the electrical shell is arranged above the motor shell, and a circuit control board and a maintenance component are arranged in the electrical shell; the maintenance component comprises a packaging box body and a wiring circuit board, and two opposite ends of the wiring circuit board are arranged with a plurality of plug-in terminals along the corresponding end contours and the plug-in terminals at the same end are arranged in a single row, the two rows of the plug-in terminals are connected one-to-one, and the two rows of the plug-in terminals are respectively and one-to-one embedded in the two opposite first side panels of the packaging box body; the plurality of plug-in terminals located at the first end of the wiring circuit board are used to connect the circuit control board, and the plurality of plug-in terminals located at the second end of the wiring circuit board are used to connect the power supply module, the acquisition device and the serial port device.

[0007] The above-mentioned embodiments of the present application have at least the following beneficial effects: Therefore, by setting a plug-in terminal on the wiring circuit board to replace the wiring terminal, the connection point on the plug-in terminal can be directly detected during detection, so as to quickly troubleshoot the fault. At the same time, when the wiring circuit board fails, it is only necessary to replace the entire circuit board and then plug and unplug it in order, which makes maintenance more convenient. Since only the wiring circuit board is encapsulated in the packaging box, the volume is smaller. Compared with the related technology, it does not need to maintain the wires in the packaging box, and only needs to care about the arrangement of the connection wires outside the packaging box. Therefore, the embodiments of the present application can improve the inspection efficiency and maintenance convenience of the centrifugal fan.

[0008] According to some embodiments of the present application, the packaging box body also includes two opposite second side panels, two opposite third side panels and two symmetrically arranged mounting plates, the two third side panels are respectively connected to the upper and lower edges of the first side panel, the two second side panels are respectively connected to the left and right edges of the first side panel, the two mounting plates are respectively located on the second side panels and are arranged close to the lower edge of the first side panel, and the plug-in terminal is arranged close to the upper edge of the first side panel.

[0009] According to some embodiments of the present application, the plug-in terminals connected to the acquisition device include a temperature acquisition positive terminal and a temperature acquisition negative terminal, and the plug-in terminals connected to the power supply module include a first positive power supply terminal and a first negative power supply terminal; a first transistor, a first indicator light and a power circuit module are welded on the wiring circuit board, the positive input end of the power circuit module is connected to the first positive power supply terminal, and the negative input end of the power circuit module is connected to the first negative power supply terminal; the positive output of the power circuit module is connected to the collector of the first transistor; the base of the first transistor is connected to the temperature acquisition negative terminal, the emitter of the first transistor is connected to the positive pole of the first indicator light, and the negative pole of the first indicator light is connected to the negative output of the power circuit module, and the temperature acquisition positive terminal and the temperature acquisition negative terminal are directly connected to the corresponding plug-in terminals located on the second end through copper wires on the wiring circuit board.

[0010] According to some embodiments of the present application, the plug-in terminals connected to the collection device also include a pressure collection positive terminal and a pressure collection negative terminal; a second transistor and a second indicator light are welded on the wiring circuit board, the base of the second transistor is connected to the pressure collection negative terminal, the emitter of the second transistor is connected to the positive pole of the second indicator light, and the collector of the second transistor is connected to the positive output of the power circuit module; the negative pole of the second indicator light is connected to the negative output of the power circuit module, and the pressure collection positive terminal and the pressure collection negative terminal are directly connected to the corresponding plug-in terminals located on the second end through copper wires on the wiring circuit board.

[0011] According to some embodiments of the present application, the plug-in terminal connected to the power supply module also includes a second positive power supply terminal and a second negative power supply terminal, the voltage connected to the first positive power supply terminal is lower than the voltage connected to the second positive power supply terminal; at least one relay is connected between the second positive power supply terminal and the second negative power supply terminal and the corresponding plug-in terminal located on the second end.

[0012] According to some embodiments of the present application, the plug-in terminal connected to the power supply module also includes a third positive power supply terminal and a third negative power supply terminal, and the third positive power supply terminal has the same voltage as the first positive power supply terminal; the two high-voltage output pins of the power supply module are respectively connected to the second positive power supply terminal and the second negative power supply terminal, the two first low-voltage output pins of the power supply module are respectively connected to the first positive power supply terminal and the first negative power supply terminal, and the two second low-voltage output pins of the power supply module are respectively connected to the third positive power supply terminal and the third negative power supply terminal, the plug-in terminal connected to the acquisition device, the third positive power supply terminal, the third negative power supply terminal, the first positive power supply terminal and the first negative power supply terminal are encapsulated in the first terminal, the second positive power supply terminal and the second negative power supply terminal are encapsulated in the second terminal, and the first terminal and the second terminal are spaced apart.

[0013] According to some embodiments of the present application, a capacitor and a resistor arranged in series are connected between the third positive power supply terminal and the third negative power supply terminal.

[0014] According to some embodiments of the present application, the plug-in terminals connected to the serial port device are all encapsulated in a third terminal, and the third terminal is spaced apart from the second terminal; the plug-in terminals connected to the serial port device are directly connected to the corresponding plug-in terminals located on the second end through copper wires on a wiring circuit board.

[0015] According to some embodiments of the present application, the plug-in terminals connected to the serial port device include two groups of serial port communication terminals and a reset terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0017] Figure 1 is a structural schematic diagram of an embodiment of a centrifugal fan provided by the present application;

[0018] Figure 2 It is a structural schematic diagram of an embodiment of a maintenance component in a centrifugal fan provided by the present application;

[0019] Figure 3 yes Figure 2 A partial structural schematic diagram of the maintenance assembly shown;

[0020] Figure 4 yes Figure 2 The structural schematic diagram of the wiring circuit board shown;

[0021] Figure 5 yes Figure 2 The circuit diagram of the wiring circuit board is shown.

[0022] Reference numerals:

[0023] Motor housing 100,

[0024] Electrical housing 200, display screen 210,

[0025] Maintenance assembly 300, packaging box body 310, first side plate 311, second side plate 312, third side plate 313, mounting plate 314, wiring circuit board 320, plug-in terminal 321, first terminal 330, second terminal 340, third terminal 350,

[0026] Power supply module 400,

[0027] The first transistor 510 , the first indicator light 520 , the power circuit module 530 , the third indicator light 540 , the second transistor 550 , the second indicator light 560 , the capacitor 570 , the resistor 580 , and the relay 590 . DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art belonging to the technical field of the present application. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application. The terms "first", "second", "third", "fourth", etc. (if present) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and need not be used to describe a specific order or sequential order.

[0030] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the present disclosure.

[0031] It should be noted that in the related art, in order to facilitate wiring of the terminal blocks inside the packaging box, a relatively long line is reserved. Therefore, it is necessary to consider the layout of the wires outside the packaging box as well as the layout of the wires inside the packaging box. When the wires cross each other, interference is likely to occur. Therefore, in the related art, the packaging box is often large in size, and therefore, it is not convenient to install or replace, which leads to poor maintenance convenience.

[0032] like Figures 1 to 5 As shown, the centrifugal fan proposed in the embodiment of the present application includes:

[0033] The motor housing 100 is used to install the fan body;

[0034] The electrical housing 200 is arranged above the motor housing 100, and a circuit control board and a maintenance component 300 are arranged in the electrical housing 200; the maintenance component 300 includes a packaging box body 310 and a wiring circuit board 320, and the two opposite ends of the wiring circuit board 320 are arranged with a plurality of plug-in terminals 321 along the corresponding end contours, and the plug-in terminals 321 at the same end are arranged in a single row, and the two rows of plug-in terminals 321 are connected one by one, and the two rows of plug-in terminals 321 are respectively and one by one embedded in the two opposite first side panels 311 of the packaging box body 310; the plurality of plug-in terminals 321 located at the first end of the wiring circuit board 320 are used to connect the circuit control board, and the plurality of plug-in terminals 321 located at the second end of the wiring circuit board 320 are used to connect the power supply module 400, the acquisition device and the serial port device.

[0035] Therefore, by setting the plug-in terminal 321 on the wiring circuit board 320 to replace the wiring terminal, the connection point on the plug-in terminal 321 can be directly tested during detection, so as to quickly troubleshoot. At the same time, when the wiring circuit board 320 fails, it is only necessary to replace the entire circuit board and plug it in and out in sequence, which makes maintenance more convenient. Since only the wiring circuit board 320 is encapsulated in the packaging box 310, the volume is smaller. Compared with the related art, it does not need to maintain the wires in the packaging box 310, and only needs to care about the arrangement of the connecting wires outside the packaging box 310. Therefore, the embodiment of the present application can improve the inspection efficiency and maintenance convenience of the centrifugal fan.

[0036] It should be noted that the wiring circuit board 320 uses copper wires printed on the printed circuit board to achieve electrical conduction between the two rows of plug-in terminals 321, and can play a role in relay transmission.

[0037] It should be noted that if Figure 3 As shown, the wiring circuit board 320 and the surface of the packaging box body 310 can be separated by setting a screw at each of the four corners of the board, so that the wiring circuit board 320 can be fixed in the packaging box body 310 while facilitating heat dissipation.

[0038] The package box 310 in the present application is 75% smaller in volume than the original package box 310, making it more convenient to install. During installation, only two screws need to be driven into a position that is convenient for wiring and installation to fix the package box 310 to the main body of our high-speed centrifugal fan, thus reducing the assembly time.

[0039] It should be noted that a serial port device is a device that communicates with other devices through a serial port.

[0040] It is understandable that if Figure 2 and Figure 3 As shown, the packaging box body 310 also includes two opposite second side panels 312, two opposite third side panels 313 and two symmetrically arranged mounting plates 314, the two third side panels 313 are respectively connected to the upper and lower edges of the first side panel 311, the two second side panels 312 are respectively connected to the left and right edges of the first side panel 311, the two mounting plates 314 are respectively located on the second side panels 312 and are arranged close to the lower edge of the first side panel 311, and the plug-in terminal 321 is arranged close to the upper edge of the first side panel 311.

[0041] It should be noted that by distributing the plug-in terminals 321 and the mounting plates 314 at intervals, sufficient space can be reserved for the plug-in terminals 321 to be plugged in and out, making maintenance more convenient.

[0042] It should be noted that the mounting plate 314 is used to be mounted on the fan body of the centrifugal fan.

[0043] It is understandable that if Figure 4 and Figure 5As shown, the plug-in terminal 321 connected to the collection device includes a temperature collection positive terminal and a temperature collection negative terminal, and the plug-in terminal 321 connected to the power supply module 400 includes a first positive power supply terminal and a first negative power supply terminal; the first triode 510, the first indicator light 520 and the power circuit module 530 are welded on the wiring circuit board 320, the positive input end of the power circuit module 530 is connected to the first positive power supply terminal, and the negative input end of the power circuit module 530 is connected to the first negative power supply terminal; the positive output of the power circuit module 530 is connected to the collector of the first triode 510; the base of the first triode 510 is connected to the temperature collection negative terminal, the emitter of the first triode 510 is connected to the positive pole of the first indicator light 520, and the negative pole of the first indicator light 520 is connected to the negative output of the power circuit module 530, and the temperature collection positive terminal and the temperature collection negative terminal are directly connected to the corresponding plug-in terminal 321 located on the second end through the copper wire on the wiring circuit board 320.

[0044] It should be noted that, by providing the temperature acquisition positive terminal and the temperature acquisition negative terminal, a temperature acquisition sensor for the fan body temperature of the centrifugal fan can be connected. The state of the temperature acquisition sensor can be indicated by setting the first indicator light 520.

[0045] It should be noted that, in some embodiments, a third indicator light 540 is also provided, the positive pole of the third indicator light 540 is connected to the output of the power circuit module 530, and the negative pole of the third indicator light 540 is connected to the negative output of the power circuit module 530, so as to confirm whether the power supply module 400 is normal through the third indicator light 540.

[0046] For example, Figure 5 As shown in the figure, A5 is the positive terminal for temperature acquisition; A6 is the negative terminal for temperature acquisition; the first positive power supply terminal corresponds to Figure 5 A2 in the figure, the first negative power supply terminal corresponds to A1 in the figure. The first triode is Q1, and the first indicator light 520 is not shown in the figure.

[0047] It can be understood that the plug-in terminal 321 connected to the collection device also includes a pressure collection positive terminal and a pressure collection negative terminal; a second transistor 550 and a second indicator light 560 are welded on the wiring circuit board 320, the base of the second transistor 550 is connected to the pressure collection negative terminal, the emitter of the second transistor 550 is connected to the positive pole of the second indicator light 560, and the collector of the second transistor 550 is connected to the positive output of the power circuit module 530; the negative pole of the second indicator light 560 is connected to the negative output of the power circuit module 530, and the pressure collection positive terminal and the pressure collection negative terminal are directly connected to the corresponding plug-in terminal 321 located on the second end through the copper wire on the wiring circuit board 320.

[0048] For example, Figure 5As shown, A3 in the figure is the positive terminal for pressure collection; A4 is the negative terminal for pressure collection. The second transistor 550 is Q2.

[0049] It should be noted that by setting a pressure collection positive terminal and a pressure collection negative terminal, a pressure sensor for detecting the pressure generated by the fan body of the centrifugal fan can be connected, and the state of the pressure sensor can be indicated by the second indicator light 560.

[0050] It is understandable that if Figure 4 and Figure 4 As shown, the plug-in terminal 321 connected to the power supply module 400 also includes a second positive power supply terminal and a second negative power supply terminal, and the voltage connected to the first positive power supply terminal is less than the voltage connected to the second positive power supply terminal; at least one relay 590 is connected between the second positive power supply terminal and the second negative power supply terminal and the corresponding plug-in terminal 321 located on the second end.

[0051] For example, Figure 5 As shown, B1 in the figure is the second positive power supply terminal; B2 is the second negative power supply terminal.

[0052] It can be understood that the plug-in terminal 321 connected to the power supply module 400 also includes a third positive power supply terminal and a third negative power supply terminal, and the third positive power supply terminal has the same voltage as the first positive power supply terminal; the two high-voltage output pins of the power supply module 400 are respectively connected to the second positive power supply terminal and the second negative power supply terminal, the two first low-voltage output pins of the power supply module 400 are respectively connected to the first positive power supply terminal and the first negative power supply terminal, and the two second low-voltage output pins of the power supply module 400 are respectively connected to the third positive power supply terminal and the third negative power supply terminal, the plug-in terminal 321, the third positive power supply terminal, the third negative power supply terminal, the first positive power supply terminal and the first negative power supply terminal of the acquisition device are encapsulated in the first terminal 330, the second positive power supply terminal and the second negative power supply terminal are encapsulated in the second terminal 340, and the first terminal 330 and the second terminal 340 are spaced apart.

[0053] For example, Figure 5 As shown, A1-A8 form a first terminal 330, and B1 and B2 form a second terminal 340. Correspondingly, the terminals opposite to A1-A8 are also integrated and packaged to form one terminal.

[0054] It is understandable that a capacitor 570 and a resistor 580 connected in series are connected between the third positive power supply terminal and the third negative power supply terminal.

[0055] For example, Figure 5 As shown, capacitor 570 is Figure 5 The C shown, the resistor 580 is Figure 5 R shown.

[0056] It can be understood that the plug-in terminals 321 connecting the serial port devices are all encapsulated in the third terminal 350, and the third terminal 350 and the second terminal 340 are spaced apart; the plug-in terminals 321 connecting the serial port devices are directly connected to the corresponding plug-in terminals 321 located on the second end through the copper wire on the wiring circuit board 320.

[0057] For example, Figure 5 As shown, C1 to C5 are plug-in terminals 321 for connecting serial port devices, which are packaged in the third terminal 350. Correspondingly, the plug-in terminals 321 at the second end connected with the plug-in terminals 321 in the second terminal 340 and the third terminal 350 are packaged in the same terminal.

[0058] It is understandable that the plug-in terminal 321 for connecting the serial port device includes two groups of serial port communication terminals and a reset terminal.

[0059] like Figure 5 As shown, the reset terminal corresponds to C1, C2 and C3 correspond to a group of serial communication terminals, and C4 and C6 correspond to a group of communication terminals.

[0060] It should be noted that if Figure 1 As shown, in some embodiments, the outer side wall of the electrical housing 200 is further provided with a display screen 210 .

[0061] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above-mentioned implementation mode. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the present application. These equivalent deformations or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A centrifugal fan, characterized in that: include: A motor housing, wherein the motor housing is used to install a fan body; An electrical shell, wherein the electrical shell is arranged above the motor shell, and a circuit control board and a maintenance component are arranged in the electrical shell; the maintenance component comprises a packaging box body and a wiring circuit board, and two opposite ends of the wiring circuit board are arranged with a plurality of plug-in terminals along the corresponding end contours and the plug-in terminals at the same end are arranged in a single row, the two rows of the plug-in terminals are connected one-to-one, and the two rows of the plug-in terminals are respectively and one-to-one embedded in the two opposite first side panels of the packaging box body; the plurality of plug-in terminals located at the first end of the wiring circuit board are used to connect the circuit control board, and the plurality of plug-in terminals located at the second end of the wiring circuit board are used to connect the power supply module, the acquisition device and the serial port device.

2. The centrifugal fan according to claim 1, characterized in that: The packaging box body also includes two opposite second side panels, two opposite third side panels and two symmetrically arranged mounting plates, the two third side panels are respectively connected to the upper and lower edges of the first side panel, the two second side panels are respectively connected to the left and right edges of the first side panel, the two mounting plates are respectively located on the second side panels and are arranged close to the lower edge of the first side panel, and the plug-in terminal is arranged close to the upper edge of the first side panel.

3. The centrifugal fan according to claim 1, characterized in that: The plug-in terminals connected to the acquisition device include a temperature acquisition positive terminal and a temperature acquisition negative terminal, and the plug-in terminals connected to the power supply module include a first positive power supply terminal and a first negative power supply terminal; a first transistor, a first indicator light and a power circuit module are welded on the wiring circuit board, the positive input end of the power circuit module is connected to the first positive power supply terminal, and the negative input end of the power circuit module is connected to the first negative power supply terminal; the positive output of the power circuit module is connected to the collector of the first transistor; the base of the first transistor is connected to the temperature acquisition negative terminal, the emitter of the first transistor is connected to the positive pole of the first indicator light, and the negative pole of the first indicator light is connected to the negative output of the power circuit module, and the temperature acquisition positive terminal and the temperature acquisition negative terminal are directly connected to the corresponding plug-in terminals located on the second end through copper wires on the wiring circuit board.

4. The centrifugal fan according to claim 3, characterized in that: The plug-in terminals connected to the collection device also include a pressure collection positive terminal and a pressure collection negative terminal; a second transistor and a second indicator light are welded on the wiring circuit board, the base of the second transistor is connected to the pressure collection negative terminal, the emitter of the second transistor is connected to the positive electrode of the second indicator light, and the collector of the second transistor is connected to the positive output of the power circuit module; the negative electrode of the second indicator light is connected to the negative output of the power circuit module, and the pressure collection positive terminal and the pressure collection negative terminal are directly connected to the corresponding plug-in terminals located on the second end through copper wires on the wiring circuit board.

5. The centrifugal fan according to claim 3, characterized in that: The plug-in terminal connected to the power supply module also includes a second positive power supply terminal and a second negative power supply terminal, the voltage connected to the first positive power supply terminal is lower than the voltage connected to the second positive power supply terminal; at least one relay is connected between the second positive power supply terminal and the second negative power supply terminal and the corresponding plug-in terminal located on the second end.

6. The centrifugal fan according to claim 5, characterized in that: The plug-in terminal connected to the power supply module also includes a third positive power supply terminal and a third negative power supply terminal, and the third positive power supply terminal has the same voltage as the first positive power supply terminal; the two high-voltage output pins of the power supply module are respectively connected to the second positive power supply terminal and the second negative power supply terminal, the two first low-voltage output pins of the power supply module are respectively connected to the first positive power supply terminal and the first negative power supply terminal, and the two second low-voltage output pins of the power supply module are respectively connected to the third positive power supply terminal and the third negative power supply terminal, the plug-in terminal connected to the acquisition device, the third positive power supply terminal, the third negative power supply terminal, the first positive power supply terminal and the first negative power supply terminal are encapsulated in the first terminal, the second positive power supply terminal and the second negative power supply terminal are encapsulated in the second terminal, and the first terminal and the second terminal are spaced apart.

7. The centrifugal fan according to claim 6, characterized in that: A capacitor and a resistor arranged in series are connected between the third positive power supply terminal and the third negative power supply terminal.

8. The centrifugal fan according to claim 6, characterized in that: The plug-in terminals connected to the serial port device are all encapsulated in the third terminal, and the third terminal is spaced apart from the second terminal; the plug-in terminals connected to the serial port device are directly connected to the corresponding plug-in terminals located on the second end through copper wires on the wiring circuit board.

9. The centrifugal fan according to claim 1 or 8, characterized in that: The plug-in terminals for connecting the serial port device include two groups of serial port communication terminals and a reset terminal.

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