Serialized volute structure, vaneless diffuser and air suspension blower

Abstract

The serialized volute structure comprises an outer spiral shell and a partition plate which are connected, the fixed end of the partition plate is detachably connected with the outer spiral shell, and the free end of the partition plate protrudes out of the throat portion of the outer spiral shell. According to the utility model, the serialized outer spiral shell is matched with the variable partition plate, so that the requirements of gas design in different flow ranges can be met within a certain range, the requirements of air suspension centrifugal blower products under different powers can be met, the same volute can be adopted for different units for repeated production, the number of machine shells is reduced, and the production cost is reduced. Meanwhile, the product production cycle is shortened, the machining difficulty is reduced, assembling is convenient, the model assembling amount and the engineering drawing drawing amount are reduced, cost is greatly reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of volute technology, specifically to a series of volute structures, a bladeless diffuser, and an air-suspended blower. Background Technology

[0002] The air-suspended centrifugal blower is an energy-saving centrifugal blower that uses a motor to directly drive the impeller without a transmission mechanism. The intake structure, impeller, diffuser, and volute are the main flow-through components of the air-suspended centrifugal blower. Among them, the development cycle of the volute is long and the processing cost is high. From design to process to manufacturing and assembly, there is a high degree of similarity. In the development process of the exhaust volute, there are repetitive or similar calculation, modeling, and drawing processes, which seriously affect production efficiency and result in high labor and production costs. This utility model proposes a new solution to the above problems. Utility Model Content

[0003] To overcome at least one of the aforementioned drawbacks, this utility model provides a series of volute structures, bladeless diffusers, and air-suspended blowers. The objective of this utility model can be achieved by adopting the following technical solutions:

[0004] In a first aspect, this utility model provides a series of spiral shell structures, including an outer spiral shell and a partition connected together, wherein the fixed end of the partition is detachably connected to the outer spiral shell, and the free end of the partition protrudes from the throat of the outer spiral shell.

[0005] In one possible implementation, the partitions of different sizes and structures can be provided on the outer spiral shell.

[0006] In one possible implementation, the free end of the partition plate has an inwardly inclined slope or an inwardly concave arc surface on the side facing the outer spiral shell.

[0007] In one possible implementation, the outer spiral housing and the partition are detachably connected by a first engagement screw.

[0008] In a second aspect, this utility model provides a bladeless diffuser, including any of the serialized volute structures in the first aspect. The bladeless diffuser further includes a motor housing, and the motor housing and the partition plate enclose a diffuser flow channel, which is connected to the vortex chamber of the outer spiral housing.

[0009] In one possible implementation, the partition is arranged parallel to the motor housing to form a diffuser channel with an equal cross-section.

[0010] In one possible implementation, the height of the baffle is adjustable to adjust the length of the diffuser channel; and / or, the width of the baffle is adjustable to adjust the width of the diffuser channel.

[0011] A third aspect of this utility model provides an air-suspended blower, including any of the serialized volute structures in the first aspect, or any of the bladeless diffusers in the second aspect.

[0012] In one possible implementation, the air suspension blower further includes:

[0013] An air intake structure is provided, wherein an air intake chamber is formed within the air intake structure, and the air intake chamber is connected to the vortex chamber of the outer spiral shell through the diffuser flow channel;

[0014] An exhaust diffuser structure is provided, comprising an exhaust duct and an outlet flange. The exhaust duct is connected to the outer spiral shell, and the outlet flange is connected to the outlet exhaust pipe.

[0015] In one possible implementation, the motor housing and the outer spiral housing are detachably connected by a second engagement screw;

[0016] The outer spiral housing and the air intake structure are detachably connected by a third connecting screw.

[0017] The beneficial technical effects of this utility model are as follows: According to the present disclosure, the serialized volute structure, bladeless diffuser, and air-suspended blower include a detachably connected outer spiral shell and a partition. The free end of the partition protrudes from the throat of the outer spiral shell. By using a serialized outer spiral shell with a variable partition, the gas design requirements of different flow ranges can be met within a certain range, and the product requirements of air-suspended centrifugal blowers at different power levels can be met. The same volute can be used for repeated production of different units, reducing the number of shells, shortening the product production cycle, reducing processing difficulty, facilitating assembly, reducing model assembly and engineering drawing, greatly reducing costs, and improving production efficiency. Attached Figure Description

[0018] The following are given by way of example and without limitation in the accompanying drawings:

[0019] Figure 1 A cross-sectional view of the volute structure, motor housing, and air intake structure of this utility model is shown.

[0020] Figure 2 A cross-sectional view of the outer spiral shell and a partition structure of this utility model is shown;

[0021] Figure 3 A cross-sectional view of the outer spiral shell and another partition structure of this utility model is shown;

[0022] Figure 4 A schematic diagram of the cross-section of the outer spiral shell and the air outlet structure of this utility model is shown;

[0023] Figure 5 A schematic diagram of a volute structure in the prior art is shown.

[0024] In the picture:

[0025] 1. Volute structure; 2. Motor housing; 3. Air intake structure; 4. Air outlet duct; 5. Outlet flange; 11. Outer spiral housing; 12. Partition plate; 13. Tongue; 21. First closing screw; 22. Second closing screw; 23. Third closing screw. Detailed Implementation

[0026] In the following detailed disclosure, these embodiments are fully described with reference to the accompanying drawings. In order to enable those skilled in the art to understand and clarify the technical solution of this utility model more clearly, the embodiments described below are not limited thereto. The present utility model will be further described in detail below with reference to the embodiments and the accompanying drawings.

[0027] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] like Figure 5The traditional volute shown includes an integrated tongue 13, which is manufactured using integral casting. The tongue 13 is usually located at the throat or inlet of the volute, with the specific location determined by the specific model of the blower and the operating environment. During the design process, it is necessary to use fluid dynamics principles and software tools for simulation analysis to optimize the shape and position of the tongue 13 in order to reduce fluid resistance and improve the efficiency of the blower. The repetitive or similar calculation, modeling, and drawing processes in the design and manufacturing of volute components can seriously affect production efficiency, resulting in high labor and production costs and a long R&D and production cycle. After ensuring that the volute and tongue 13 design meet the expected performance requirements, they are directly integrally cast, which is difficult to process and assemble, greatly affecting production efficiency.

[0030] The first aspect of this utility model is as follows: Figures 1-4 As shown, a series of spiral shell structures 1 are provided, including an outer spiral shell 11 and a partition 12 connected to each other. The fixed end of the partition 12 is detachably connected to the outer spiral shell 11, and the free end of the partition 12 protrudes from the throat of the outer spiral shell 11.

[0031] The beneficial technical effects of this utility model are as follows: According to the present disclosure, the serialized volute structure 1, bladeless diffuser, and air-suspended blower include a detachably connected outer spiral shell 11 and a partition 12. The free end of the partition 12 protrudes from the throat of the outer spiral shell 11. The outer spiral shell 11 and the partition 12 are detachably connected, making processing, assembly, maintenance, and replacement more convenient. The serialized outer spiral shell 11, combined with the variable partition 12, enables rapid adaptation to different specifications and performance requirements. The same volute can be repeatedly used for different units, reducing the number of shells. With the variable partition 12, the position and shape of the partition 12 can be adjusted according to specific needs to meet different fluid control requirements. It can meet the gas design needs of different flow ranges within a certain range and meet the needs of air-suspended centrifugal blower products at different power levels. By designing the key design parameters of the exhaust volute, the structural dimensions of the components can be controlled, reducing the amount of model assembly and engineering drawing, while also shortening the product production cycle, greatly reducing costs, and improving production efficiency.

[0032] The detachable design of the outer spiral shell 11 and the partition 12 simplifies the processing and assembly process, improves production efficiency, and the serialized outer spiral shell 11 and variable partition 12 make production more standardized, maximize the sharing of volute parts, reduce processing difficulty, and have wider applicability.

[0033] Compared to the traditional integrated serial volute structure 1, which is limited by structure and size and can only meet single design requirements, the serialized external spiral shell 11 provided in this embodiment is simpler and easier to operate in processes such as shaping, doffing, and cleaning. The structure of the partition 12 can be flexibly adjusted to meet the serialization requirements of air suspension blowers with different flow rates and power, making it more applicable.

[0034] In one possible implementation, such as Figures 1-3 As shown, partitions 12 of different sizes and structures can be provided on the outer spiral shell 11.

[0035] It is understandable that the diffuser width D varies for blower units with different power and flow coefficients, and therefore different approaches are used. Figure 5 In the traditional integrated volute structure shown, the diffuser width D is fixed, and different units cannot use the same volute structure, which cannot meet the requirements of unit serialization and has great limitations.

[0036] In this design, the same exhaust volute size can be used for gases within a certain flow range. The volute loss is within an acceptable range, and the overall performance of the machine is not significantly affected. Different blower units use the same set of volute structure 1, and the substructure uses the same outer spiral shell 11. Only the structure of the baffle 12 needs to be changed to achieve the serialization of volute structure 1. Changing the structure of the baffle 12 can be achieved by changing the width and height of the baffle 12.

[0037] In this embodiment, the outer spiral shell 11 is paired with a variable baffle 12. The size and structure of the baffle 12 are different. It can be understood that the diffuser flow channel is enclosed by the inner wall of the motor housing 2 and the inner wall of the baffle 12. The outlet position of the bladeless diffuser, i.e., the height H of the volute baffle 12, is a key parameter in the model-level design. The gas enters the variable cross-section exhaust volute after passing through the diffuser. If the diffuser flow channel is too long, it will produce a large friction loss, i.e., a large H parameter will produce a large friction loss. If the flow channel is too short, the pressure will not meet the requirements, i.e., a small H parameter will not meet the requirements. Different units can use different baffle 12 heights H and / or different baffle 12 widths L. The height H and width L of the baffle 12 can be flexibly adjusted. During aerodynamic development, a high match with the upstream component bladeless diffuser can be achieved, realizing a suitable exhaust series volute structure 1 and better model-level aerodynamic performance.

[0038] In one possible implementation, such as Figure 3 As shown, the free end of the partition 12 has an inwardly inclined slope or an inwardly concave arc surface on the side facing the outer spiral shell 11.

[0039] The free end of the baffle 12 protruding from the throat of the outer spiral shell 11 can be provided with a slope or an arc surface to optimize the structure of the baffle 12. Compared with a straight structure, the change of the flow field when the fluid passes through the baffle 12 is smoother, which further improves the uniformity of the aerodynamic flow field and reduces the generation of turbulence and vortices.

[0040] Specifically, the top of the baffle 12 can be locally cut and ground, making the bevel machining easier. Setting a bevel or arc surface helps reduce fluid flow separation at the baffle 12, guiding the fluid more smoothly through the baffle 12 area, reducing sudden changes in flow velocity, and thus improving the uniformity of the flow field. By changing the shape of the top of the baffle 12, the flow direction and velocity distribution of the fluid can be affected, which helps to make the fluid distribution in the volute more uniform and reduce the occurrence of local high-speed or low-speed regions. The improved uniformity of the flow field makes the fluid flow in the volute more efficient, thereby reducing energy consumption. Reducing turbulence and vortices also helps to reduce operating noise and improve the overall performance of the equipment.

[0041] In one possible implementation, such as Figure 1 As shown, the outer spiral housing 11 and the partition plate 12 are detachably connected by the first engagement screw 21.

[0042] The outer spiral shell 11 is made by casting, and it is easy to assemble with the partition 12. The outer spiral shell 11 and the partition 12 are connected together as a component by the first connecting screw 21, which reduces the difficulty of casting. This connection method is simple to operate and facilitates quick assembly and disassembly during production, maintenance or replacement of parts. When the partition 12 is severely worn, it improves the flexibility and maintainability of the volute structure 1.

[0043] The second aspect of this utility model is as follows: Figures 1-4 As shown, a bladeless diffuser is provided, including any of the serialized volute structures 1 in the first aspect. The bladeless diffuser also includes a motor housing 2. The motor housing 2 and the partition plate 12 enclose a diffuser flow channel, which is connected to the vortex chamber of the outer spiral housing 11.

[0044] Understandably, the bladeless diffuser is a key component in fluid machinery, used to convert the kinetic energy of the fluid into static pressure energy. The motor housing 2 carries the motor and, together with other components, constitutes the main structure of the diffuser. The outer spiral housing 11 is connected to the motor housing 2, and the partition 12 encloses the motor housing 2 to form the diffuser flow channel, which converts the kinetic energy of the incoming fluid into static pressure energy, thereby increasing the fluid pressure. The diffuser flow channel is connected to the vortex chamber of the outer spiral housing 11. The fluid processed by the diffuser flow channel will enter the vortex chamber to further complete the collection and discharge of the fluid.

[0045] The bladeless diffuser achieves efficient conversion of fluid kinetic energy through the precise cooperation of the motor housing 2, the outer spiral housing 11, and the partition 12, thereby improving the static pressure of the fluid and facilitating subsequent fluid processing.

[0046] In practice, the performance of a bladeless diffuser is affected by several factors, including the design of the diffuser flow channel, the selection of materials, and the manufacturing process. When designing and using a bladeless diffuser, the shape and size of the baffle 12 need to be adjusted to ensure optimal performance.

[0047] In one possible implementation, the partition 12 is arranged parallel to the motor housing 2 to form a diffuser channel with a uniform cross-section.

[0048] The inner wall of the partition 12 is parallel to the inner wall of the motor housing 2 to form a stable diffuser flow channel. Since the partition 12 is parallel to the motor housing 2, the diffuser flow channel formed between them has the characteristic of equal cross-section, which can ensure the stability of fluid flow in the flow channel, reduce the generation of turbulence and vortex, reduce flow loss, and thus improve the efficiency of the diffuser.

[0049] In one possible implementation, such as Figure 2 As shown, the height of the baffle 12 is adjustable to adjust the length of the diffuser channel; and / or the width of the baffle 12 is adjustable to adjust the width of the diffuser channel.

[0050] The length of the baffle 12 directly determines the length of the diffuser channel. Increasing the length of the baffle 12 will correspondingly lengthen the diffuser channel, and vice versa. The change in the length of the diffuser channel will affect the residence time of the fluid in the diffuser channel and the pressure boosting effect. The length of the diffuser channel can be adjusted by adjusting the length of the baffle 12 to meet the needs of different diffuser channels.

[0051] Understandably, a longer residence time for fluid in a longer diffuser channel helps to more fully convert the fluid's kinetic energy into static pressure energy. However, an excessively long channel can also lead to increased frictional losses during flow. Appropriately increasing the diffuser channel length can improve the diffuser's pressure boosting capacity, as the fluid undergoes a more thorough deceleration and pressurization process in a longer channel. However, an excessively long diffuser channel can also lead to decreased efficiency, especially under low flow conditions.

[0052] To ensure sufficient diffusion capacity of the diffuser, the optimal diffuser channel width should be set as much as possible. The change in diffuser channel width has a significant impact on the fluid velocity distribution and flow resistance. Different model-level diffusers have different channel widths. The width of the diffuser channel directly determines the width of the baffle 12. Increasing the width of the diffuser channel will correspondingly reduce the width of the baffle 12, and vice versa.

[0053] Understandably, a wider diffuser channel provides more space for fluid to flow, potentially resulting in a more uniform velocity distribution. However, an excessively wide diffuser channel can also cause unnecessary vortices within the channel, increasing flow losses. Increasing the diffuser channel width typically reduces flow resistance and lowers pressure loss as the fluid passes through the diffuser; however, an excessively wide channel can increase flow splitting losses, especially at high flow rates.

[0054] Therefore, in specific implementation, it is necessary to comprehensively consider the appropriate size of the baffle 12 according to the characteristics of the fluid, the working conditions and the design requirements of the diffuser, and adjust the length, width and shape of the baffle 12 to keep the length and width of the diffuser channel as moderate as possible, avoid unnecessary vortex and diversion losses, achieve sufficient kinetic energy conversion and pressure increase, so as to ensure the compatibility between other components of the diffuser and the stability of the overall structure.

[0055] A third aspect of this utility model provides an air-suspended blower, including any of the serialized volute structures 1 in the first aspect, or including any of the bladeless diffusers in the second aspect.

[0056] Understandably, the air suspension blower is a high-efficiency and reliable blower device. It is driven directly by a motor to the impeller, eliminating the need for a transmission mechanism. It is characterized by high efficiency and energy saving, enabling the blower to achieve high efficiency, low noise, and low energy consumption during operation.

[0057] The serialized volute of the air suspension blower provided in this embodiment adopts a detachable outer spiral shell 11 and a variable partition 12, which makes it easier to adopt a modular design. Each component can be manufactured and processed separately, simplifying the overall production process, greatly reducing the processing difficulty and production design cost, reducing the dependence on advanced equipment and skilled workers, improving production efficiency, and also improving the maintainability and adaptability of the product.

[0058] In one possible implementation, such as Figure 4 As shown, the air suspension blower includes an intake structure and an exhaust diffuser structure. An intake chamber is formed inside the intake structure, and an impeller is connected to the intake structure. The intake chamber is connected to the vortex chamber of the outer spiral shell 11 through a diffuser flow channel. The exhaust diffuser structure includes an exhaust duct 4 and an outlet flange 5. An outlet diffuser section is formed inside the exhaust duct 4. The intake chamber is connected to the vortex chamber of the outer spiral shell 11 through a diffuser flow channel. The exhaust duct 4 is connected to the outer spiral shell 11, and the outlet flange 5 is connected to the outlet exhaust pipe to smoothly discharge the fluid.

[0059] Understandably, the intake structure 3 forms an intake chamber, serving as the initial area for fluid entry. This ensures that the fluid can enter the impeller and diffuser channels uniformly and stably. The intake chamber is connected to the volute of the outer spiral casing 11, allowing the fluid introduced from the intake chamber to smoothly enter the impeller and diffuser channels, where it can then complete the conversion of kinetic energy to static pressure energy. The outlet flange 5 is connected to the outer spiral casing 11 via the outlet duct 4. The outlet duct 4 serves as the channel for fluid to flow out of the serialized volute structure, and its design must ensure that the fluid maintains a stable flow pattern and uniform velocity distribution during the outflow process. The design of the outlet flange 5 must consider its compatibility with standard pipe structures to ensure optimal hydrodynamic performance of the entire blower system.

[0060] The blower's flowing gas passes through the inlet structure 3, diffuser channel, outer spiral shell 11, baffle 12, and outlet flange 5, achieving efficient fluid introduction, conversion of kinetic energy to static pressure energy, and smooth fluid discharge. In practical implementation, it is necessary to comprehensively consider factors such as the size, shape, and material of each part based on specific fluid characteristics, operating conditions, and design requirements to achieve optimal performance.

[0061] Among them, such as Figure 4 As shown, this embodiment provides a specific structure. The serialized volute structure 1 is a helical variable cross-section structure. The minimum S0 and maximum S7 of any cross-section are designed using the equal circulation method. During the design, the cross-section structure can be designed every 45°, and the size of the small helical cross-section S0 has been modified. The reasonable change of the helical volute cross-section makes the airflow diffusion process inside the volute smoother. The volute outlet duct 4 is smoothly connected to the maximum cross-section of the volute, and its initial profile is consistent with the direction of the mainstream gas at the outlet, further reducing impact loss. The outlet duct 4 is designed to ensure a reasonable expansion degree to ensure the diffusion capacity of the exhaust volute. The outlet of the outlet duct 4 is connected to the external pipeline in the form of a flexible hose to ensure that the volute has a small flow loss.

[0062] In one possible implementation, the motor housing 2 and the outer spiral housing 11 are detachably connected by a second screw 22, and the outer spiral housing 11 and the air intake structure 3 are detachably connected by a third screw 23.

[0063] The motor housing 2 and the outer spiral housing 11 are detachably connected by the second connecting screw 22, and the outer spiral housing 11 and the air intake structure 3 are detachably connected by the third connecting screw 23. This not only ensures the stability and sealing of the structure and ensures that the fluid flows normally inside the diffuser without leakage, but also simplifies the installation and disassembly process, facilitates maintenance and replacement of parts, and improves the maintainability and service life of the equipment.

[0064] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0066] In view of the detailed description above, these and other changes can be made to these embodiments. This written description includes embodiments of the best mode disclosed in this utility model. The patent scope of this utility model is defined by the claims, which are not limited by this disclosure. The protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in this utility model, based on the technical solution and concept of this utility model, are within the protection scope of this utility model.

Claims

1. A series of volute structures, characterized in that, It includes an outer spiral shell (11) and a partition (12) connected to each other. The fixed end of the partition (12) is detachably connected to the outer spiral shell (11). The free end of the partition (12) protrudes from the throat of the outer spiral shell (11). The free end of the partition (12) facing the outer spiral shell (11) has an inwardly inclined slope or an inwardly concave arc surface.

2. The serialized volute structure according to claim 1, characterized in that, The outer spiral shell (11) may be provided with partitions (12) of different sizes and structures.

3. The serialized volute structure according to claim 1, characterized in that, The outer spiral shell (11) and the partition (12) are detachably connected by a first engagement screw (21).

4. A bladeless diffuser, characterized in that, The bladeless diffuser includes a series of volute structures as described in any one of claims 1-3, and further includes a motor housing (2), wherein the motor housing (2) and the partition plate (12) enclose a diffuser flow channel, and the diffuser flow channel is connected to the volute chamber of the outer spiral housing (11).

5. The bladeless diffuser according to claim 4, characterized in that, The partition (12) is arranged parallel to the motor housing (2) to form a diffuser channel with equal cross-section.

6. The bladeless diffuser according to claim 4, characterized in that, The height of the baffle (12) is adjustable to adjust the length of the diffuser channel; and / or, The width of the partition (12) is adjustable for adjusting the width of the diffuser channel.

7. An air-suspended blower, characterized in that, Includes the bladeless diffuser as described in any one of claims 4-6.

8. The air suspension blower according to claim 7, characterized in that, The air suspension blower also includes: An intake structure (3) is formed therein, and the intake chamber is connected to the vortex chamber of the outer spiral shell (11) through the diffuser flow channel. The exhaust diffuser structure includes an exhaust duct (4) and an outlet flange (5). The exhaust duct (4) is connected to the outer spiral shell (11), and the outlet flange (5) is connected to the outlet exhaust pipe.

9. The air suspension blower according to claim 8, characterized in that, The motor housing (2) and the outer spiral housing (11) are detachably connected by a second engagement screw (22); The outer spiral housing (11) and the air intake structure (3) are detachably connected by a third connecting screw (23).

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