A mixed-flow blower with water-cooling heat dissipation function and compact structure

Abstract

The utility model relates to a mixed flow type blower with water cooling heat dissipation function and compact structure, from left to right includes the front fan casing and rear fan casing installed together in proper order, installs impeller assembly in the front fan casing, installs motor assembly in the rear fan casing right side of impeller assembly, still includes the heat dissipation unit, and the heat dissipation unit includes gas cooling assembly and water cooling assembly, gas cooling assembly includes gas cooler, cooling air inlet and high pressure hot gas outlet, water cooling assembly includes water cooler, cooling water inlet, hot water outlet and cooling water circulation tank, the utility model discloses adopts mixed flow type impeller and straight cylinder shape volute structure (the front fan casing and rear fan casing are directly connected), compact structure has reduced the overall volume and occupied space significantly, is applicable to the application occasion of limited space.

Description

Technical Field

[0001] This utility model relates to the field of compressor cooling technology, and in particular to a mixed-flow blower with water cooling function and compact structure. Background Technology

[0002] Traditional blowers are mainly divided into two types: centrifugal and axial flow.

[0003] Centrifugal blowers typically require a complex volute (compression housing) structure to achieve pressure conversion and airflow guidance, resulting in a large overall size and complex structure. Furthermore, the air inlet and outlet are usually not on the same straight line, which causes inconvenience for installation and duct layout.

[0004] Although axial flow blowers have a relatively compact structure, their pressure coefficient is low, which limits their performance in applications requiring a certain pressure and flow rate. If higher pressure is required, a multi-stage axial flow design is necessary, which further increases the complexity of the mechanism.

[0005] Mixed-flow blowers combine the advantages of high pressure from centrifugal blowers and high flow rate from axial blowers, but existing mixed-flow blowers still have shortcomings in terms of compact structure, coaxial arrangement of inlet and outlet air, and efficient heat dissipation. For example, traditional blowers mostly use air cooling, which is inefficient and cannot meet the heat dissipation requirements under high power density, resulting in increased operating temperature and affecting reliability and service life.

[0006] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a mixed-flow blower with water cooling function and compact structure, so as to make it more valuable for industrial use. Utility Model Content

[0007] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a mixed-flow blower with water cooling function and compact structure.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A mixed-flow blower with water cooling function and compact structure includes, from left to right, a front blower housing and a rear blower housing installed together. An impeller assembly is installed in the front blower housing, and a motor assembly is installed in the rear blower housing to the right of the impeller assembly. The motor assembly includes, from left to right, a front motor housing and a rear motor housing installed together. A stator assembly is installed in the rear motor housing, and a rotor assembly installed in the stator assembly can pass through the front motor housing and connect to the impeller assembly on the left. It also includes a heat dissipation unit, which includes a gas cooling component and a water cooling component; The gas cooling assembly includes a gas cooler, a cooling inlet, and a high-pressure hot gas outlet. The cooling inlet, which is connected to the gas cooler via a cooling inlet connecting pipe, is connected to the right side of the motor cooling cavity located inside the rear housing of the motor. The high-pressure hot gas outlet, which is connected to the gas cooler via a high-pressure hot gas connecting pipe, is connected to the right side of the main compression channel located between the rear fan housing and the motor assembly. The water cooling assembly includes a water cooler, a cooling water inlet, a hot water outlet, and a cooling water circulation tank. A spiral-shaped cooling water circulation tank is provided on the outer side of the rear housing of the motor. The cooling water inlet, which is connected to the water cooler through a cooling water inlet pipe, is connected to one side of the cooling water circulation tank. The hot water outlet, which is connected to the water cooler through a hot water outlet pipe, is connected to the other side of the cooling water circulation tank.

[0009] As a further improvement of this utility model, a cooling tank cover plate is installed on the rear housing of the motor outside the cooling water circulation tank, and a sealing ring is installed at the connection between the cooling tank cover plate and the rear housing of the motor.

[0010] As a further improvement of this utility model, an air inlet hood is installed on the left side of the front fan housing, and an air inlet cavity is provided inside the air inlet hood; an air outlet hood is installed on the right side of the rear fan housing, and an air outlet cavity is provided inside the air outlet hood.

[0011] As a further improvement of this utility model, the air inlet cover is detachably installed on the front fan housing, and the air outlet cover is detachably installed on the rear fan housing.

[0012] As a further improvement of this utility model, the air inlet cover is integrally formed with the front fan housing, and the air outlet cover is integrally formed with the rear fan housing.

[0013] As a further improvement of this utility model, a mounting bracket is installed on the front fan housing.

[0014] As a further improvement of this utility model, the impeller assembly includes an impeller, with a plurality of first blades evenly distributed along the circumferential direction on the left side of the impeller, a plurality of second blades evenly distributed along the circumferential direction on the right side of the impeller, a plurality of diffusers evenly distributed along the circumferential direction on the outer side of the left side of the motor front housing, and a drain outlet is provided on the motor front housing on the right side of the impeller assembly.

[0015] As a further improvement of this utility model, the first blade is an arc-shaped blade structure with a spiral distribution, and the second blade is a strip-shaped blade structure.

[0016] As a further improvement of this utility model, the diffuser has an arc-shaped blade structure and is detachably mounted on the front housing of the motor.

[0017] As a further improvement of this utility model, the drainage outlet is a funnel-shaped structure that diffuses from right to left.

[0018] By means of the above solution, this utility model has at least the following advantages: This utility model adopts a mixed-flow impeller and a straight cylindrical volute-less structure (the front fan casing and the rear fan casing are directly connected), which is compact and significantly reduces the overall volume and space occupied, making it suitable for space-constrained applications.

[0019] The air inlet and outlet of this invention are located on the same straight line (achieved through an air inlet cover and an air outlet cover), which simplifies pipe connection and system layout and makes installation and pipe laying convenient.

[0020] This invention employs a dual cooling system of water cooling and gas cooling. The water cooling component efficiently removes heat from the motor and bearings through a spiral cooling water circulation channel, while the gas cooling component utilizes high-pressure gas from the main compression channel for circulating cooling. This results in high heat dissipation efficiency, significantly reduces operating temperature, and improves power density, reliability, and service life.

[0021] This utility model's mixed-flow impeller design combines the high flow rate of axial flow and the high pressure of centrifugal flow. The diffuser and outlet optimize the airflow distribution, improving the overall performance of the blower.

[0022] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the following are the preferred embodiments of this utility model and are described in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural schematic diagram of a mixed-flow blower with water-cooled heat dissipation function and compact structure according to the present invention. Figure 2 yes Figure 1 A schematic diagram of the structure after removing the rear shell; Figure 3 yes Figure 2 A schematic diagram of the structure after removing the cooling tank cover; Figure 4 yes Figure 1 A schematic diagram of the internal structure.

[0025] The meanings of the labels in the figures are as follows.

[0026] 1. Front fan housing; 2. Rear fan housing; 3. Air inlet hood; 4. Mounting bracket; 5. Motor assembly; 6. Air outlet hood; 7. Gas cooler; 8. Cooling air inlet; 9. High-pressure hot air outlet; 10. Cooling water inlet; 11. Hot water outlet; 12. Rear motor housing; 13. Front motor housing; 14. Cooling tank cover; 15. Cooling water circulation tank; 16. Stator assembly; 17. Rotor assembly; 18. Impeller assembly. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] The first embodiment of this utility model: The purpose of this invention is to overcome the shortcomings of existing technologies and provide a compact mixed-flow blower with inlet and outlet located on the same straight line and equipped with efficient water cooling. This blower, through optimized structural design, integrates a mixed-flow impeller, a volute-less straight-through outer casing, and a water cooling system, significantly improving compactness, ease of installation, and heat dissipation efficiency.

[0030] like Figures 1-4 As shown, this embodiment of a mixed-flow blower with water cooling function and compact structure includes, from left to right, a front blower housing 1 and a rear blower housing 2 installed together, with a mounting bracket 4 installed on the front blower housing 1. An impeller assembly 18 is installed inside the front blower housing 1, and a motor assembly 5 is installed inside the rear blower housing 2 to the right of the impeller assembly 18. The motor assembly 5 includes, from left to right, a front motor housing 13 and a rear motor housing 12 installed together, with a stator assembly 16 installed inside the rear motor housing 12. A rotor assembly 17 installed inside the stator assembly 16 can pass through the front motor housing 13 and connect to the impeller assembly 18 on the left. It also includes a heat dissipation unit, which includes a gas cooling component and a water cooling component.

[0031] The gas cooling assembly includes a gas cooler 7, a cooling inlet 8, and a high-pressure hot gas outlet 9. The cooling inlet 8, which is connected to the gas cooler 7 via a cooling inlet connecting pipe, is connected to the right side of the motor cooling cavity located inside the motor rear housing 12. The high-pressure hot gas outlet 9, which is connected to the gas cooler 7 via a high-pressure hot gas connecting pipe, is connected to the right side of the main compression channel located between the rear fan housing 2 and the motor assembly 5.

[0032] The water cooling assembly includes a water cooler, a cooling water inlet 10, a hot water outlet 11, and a cooling water circulation tank 15. A spiral-shaped cooling water circulation tank 15 is provided on the outer side of the motor rear housing 12. The cooling water inlet 10, which is connected to the water cooler through a cooling water inlet pipe, is connected to one side of the cooling water circulation tank 15. The hot water outlet 11, which is connected to the water cooler through a hot water outlet pipe, is connected to the other side of the cooling water circulation tank 15.

[0033] A cooling tank cover plate 14 is installed on the motor rear housing 12 outside the cooling water circulation tank 15, and a sealing ring is installed at the connection between the cooling tank cover plate 14 and the motor rear housing 12.

[0034] An air inlet hood 3 is installed on the left side of the front fan housing 1, and an air inlet cavity is provided inside the air inlet hood 3; an air outlet hood 6 is installed on the right side of the rear fan housing 2, and an air outlet cavity is provided inside the air outlet hood 6.

[0035] Two installation structures for the fan cover: The air inlet shroud 3 is detachably mounted on the front fan housing 1, and the air outlet shroud 6 is detachably mounted on the rear fan housing 2.

[0036] The air inlet shroud 3 is integrally formed with the front fan housing 1, and the air outlet shroud 6 is integrally formed with the rear fan housing 2.

[0037] The impeller assembly 18 includes an impeller, with a number of first blades evenly distributed along the circumferential direction on the left side of the impeller and a number of second blades evenly distributed along the circumferential direction on the right side of the impeller. The first blades are spirally distributed arc-shaped blade structures used to guide the mixed flow of airflow (combining axial and centrifugal components), and the second blades are strip-shaped blade structures used to enhance airflow stability.

[0038] Several diffusers are evenly distributed along the circumferential direction on the outer side of the left side of the motor front housing 13. The diffusers are arc-shaped blade structures and are detachably installed on the motor front housing 13, used to diffuse and guide the airflow.

[0039] An air outlet is provided on the motor front housing 13 on the right side of the impeller assembly 18. The air outlet is a funnel-shaped structure that diffuses from right to left, which helps the airflow to transition smoothly.

[0040] The second embodiment of this utility model: like Figures 1-4 As shown, this embodiment of a mixed-flow blower with water-cooling function and compact structure includes, from left to right, a front blower housing 1, a rear blower housing 2, an air inlet shroud 3, an air outlet shroud 6, and a mounting bracket 4. The front blower housing 1 and the rear blower housing 2 are connected by bolts to form an integral outer shell, and the interior constitutes the main compression flow channel.

[0041] The impeller assembly 18 is installed inside the front fan housing 1 and includes a mixing impeller. Multiple first blades are evenly distributed along the circumference on the left side of the impeller. These first blades have a spiral arc-shaped structure to achieve mixed airflow (containing both axial and centrifugal components). Multiple second blades are evenly distributed along the circumference on the right side of the impeller. These second blades have a straight strip-shaped structure to enhance airflow stability. The impeller assembly 18 is connected to the rotor assembly 17 of the motor assembly 5 via a shaft connection.

[0042] The motor assembly 5 is installed inside the rear fan housing 2, including a front motor housing 13 and a rear motor housing 12. A stator assembly 16 is fixed inside the rear motor housing 12, and a rotor assembly 17 is installed inside the stator assembly 16 and can rotate at high speed. Four diffusers are evenly distributed along the circumferential direction on the left outer edge of the front motor housing 13. These diffusers are detachable arc-shaped blades used to diffuse the airflow exiting the impeller. An air outlet is also provided on the front motor housing 13; this outlet is a funnel-shaped structure that diffuses from right to left, guiding the airflow into the main compression channel.

[0043] The heat dissipation unit includes gas cooling components and water cooling components: The gas cooling assembly includes a gas cooler 7, a cooling inlet 8, and a high-pressure hot gas outlet 9. The cooling inlet 8 is connected to the gas cooler 7 via a cooling inlet connecting pipe and communicates with the right side of the motor cooling cavity inside the motor rear housing 12; the high-pressure hot gas outlet 9 is connected to the gas cooler 7 via a high-pressure hot gas connecting pipe and communicates with the portion of the main compression channel near the right side.

[0044] The water cooling assembly includes a water cooler (not shown), a cooling water inlet 10, a hot water outlet 11, and a cooling water circulation tank 15. The cooling water circulation tank 15 is located on the outside of the motor rear housing 12 and spirals around the housing. The cooling water inlet 10 is connected to the water cooler via a cooling water inlet pipe and is also connected to the inlet of the cooling water circulation tank 15. The hot water outlet 11 is connected to the water cooler via a hot water outlet pipe and is also connected to the outlet of the cooling water circulation tank 15. A cooling tank cover 14 is bolted to the motor rear housing 12, covering the cooling water circulation tank 15, and is sealed with a sealing ring to prevent cooling water leakage.

[0045] The air inlet hood 3 is connected to the left side of the front fan housing 1 by clips, forming an air inlet cavity inside; the air outlet hood 6 is connected to the right side of the rear fan housing 2 by clips, forming an air outlet cavity inside. The mounting bracket 4 is welded to the front fan housing 1 to fix the blower.

[0046] The working process of this embodiment: Airflow process: Ambient air enters the blower through the inlet cavity of the inlet hood 3, and is mixed and pressurized by the first and second blades of the impeller assembly 18 (the airflow has both axial and radial velocities). The pressurized airflow is diffused and guided by the diffuser, and then enters the main compression channel (the space between the rear blower housing 2 and the motor assembly 5) through the outlet, and finally is discharged straight out from the outlet cavity of the outlet hood 6. Since the inlet and outlet hoods are located on the same straight line, the duct connection is simple.

[0047] Cooling process: Water cooling: Cooling water enters the spiral cooling water circulation tank 15 from the cooling water inlet 10, flows past the outside of the motor rear housing 12, absorbs the heat generated by the motor and bearings, and is discharged from the hot water outlet 11 to the external water cooler for heat exchange. After cooling, it is recycled. The water cooling system directly cools the heat-generating components, efficiently maintaining low-temperature operation.

[0048] Gas cooling: Some of the high-pressure gas in the main compression channel is drawn to the gas cooler 7 through the high-pressure hot gas outlet 9. After cooling, it enters the motor cooling chamber through the cooling inlet 8 to force air cooling inside the motor. Then the gas is discharged back to the main compression channel to form a circulating cooling system.

[0049] Overall operation: The motor assembly 5 drives the impeller assembly 18 to rotate at high speed, generating high-pressure airflow. At the same time, the dual heat dissipation system ensures that the blower operates stably in high-temperature environments and extends its service life.

[0050] Through the above design, this utility model achieves a compact structure, coaxial air intake and exhaust, and efficient heat dissipation, making it particularly suitable for industrial ventilation, environmental protection equipment, and other applications requiring high power density and reliability.

[0051] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0052] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A mixed-flow blower with water cooling function and compact structure, comprising, from left to right, a front blower housing (1) and a rear blower housing (2) installed together, an impeller assembly (18) installed in the front blower housing (1), and a motor assembly (5) installed in the rear blower housing (2) to the right of the impeller assembly (18), the motor assembly (5) comprising, from left to right, a front motor housing (13) and a rear motor housing (12) installed together, a stator assembly (16) installed in the rear motor housing (12), and a rotor assembly (17) installed in the stator assembly (16) that can pass through the front motor housing (13) and connect to the impeller assembly (18) on the left side; Its features are: It also includes a heat dissipation unit, which includes a gas cooling component and a water cooling component; The gas cooling assembly includes a gas cooler (7), a cooling inlet (8), and a high-pressure hot gas outlet (9). The cooling inlet (8), which is connected to the gas cooler (7) via a cooling inlet connecting pipe, is connected to the right side of the motor cooling cavity located in the rear housing (12) of the motor. The high-pressure hot gas outlet (9), which is connected to the gas cooler (7) via a high-pressure hot gas connecting pipe, is connected to the right side of the main compression channel located between the rear fan housing (2) and the motor assembly (5). The water cooling assembly includes a water cooler, a cooling water inlet (10), a hot water outlet (11), and a cooling water circulation tank (15). A spiral-shaped cooling water circulation tank (15) is provided on the outer side of the rear housing (12) of the motor. The cooling water inlet (10), which is connected to the water cooler through a cooling water inlet pipe, is connected to one side of the cooling water circulation tank (15). The hot water outlet (11), which is connected to the water cooler through a hot water outlet pipe, is connected to the other side of the cooling water circulation tank (15).

2. The mixed-flow blower with water-cooled heat dissipation function and compact structure as described in claim 1, characterized in that, A cooling tank cover plate (14) is installed on the motor rear housing (12) outside the cooling water circulation tank (15), and a sealing ring is installed at the connection between the cooling tank cover plate (14) and the motor rear housing (12).

3. A mixed-flow blower with water-cooled heat dissipation function and compact structure as described in claim 1, characterized in that, An air inlet hood (3) is installed on the left side of the front fan housing (1), and an air inlet cavity is provided inside the air inlet hood (3); an air outlet hood (6) is installed on the right side of the rear fan housing (2), and an air outlet cavity is provided inside the air outlet hood (6).

4. A mixed-flow blower with water-cooled heat dissipation function and compact structure as described in claim 3, characterized in that, The air inlet hood (3) is detachably mounted on the front fan housing (1), and the air outlet hood (6) is detachably mounted on the rear fan housing (2).

5. A mixed-flow blower with water-cooled heat dissipation function and compact structure as described in claim 3, characterized in that, The air inlet hood (3) is integrally formed with the front fan housing (1), and the air outlet hood (6) is integrally formed with the rear fan housing (2).

6. A mixed-flow blower with water-cooled heat dissipation function and compact structure as described in claim 1, characterized in that, A mounting bracket (4) is installed on the front fan housing (1).

7. A mixed-flow blower with water-cooled heat dissipation function and compact structure as described in claim 1, characterized in that, The impeller assembly (18) includes an impeller, with a plurality of first blades evenly distributed along the circumferential direction on the left side of the impeller, a plurality of second blades evenly distributed along the circumferential direction on the right side of the impeller, a plurality of diffusers evenly distributed along the circumferential direction on the outer side of the left side of the motor front housing (13), and a drain outlet is provided on the motor front housing (13) on the right side of the impeller assembly (18).

8. A mixed-flow blower with water-cooled heat dissipation function and compact structure as described in claim 7, characterized in that, The first blade is an arc-shaped blade structure with a spiral distribution, and the second blade is a strip-shaped blade structure.

9. A mixed-flow blower with water-cooled heat dissipation function and compact structure as described in claim 7, characterized in that, The diffuser has an arc-shaped blade structure and is detachably mounted on the front housing (13) of the motor.

10. A mixed-flow blower with water-cooled heat dissipation function and compact structure as described in claim 7, characterized in that, The drainage outlet is a funnel-shaped structure that diffuses from right to left.

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