Blade angle increasing type efficient energy-saving backward-inclined air cabinet impeller

Abstract

The utility model relates to an efficient and energy-saving backward tilting air cabinet impeller, in particular to a blade angle increasing type efficient and energy-saving backward tilting air cabinet impeller which comprises two blade assemblies, a fixing assembly, a first connecting assembly and a second connecting assembly. The first connecting assembly is welded to one end of one blade assembly, and the second connecting assembly is arranged at the bottom end of the first connecting assembly. The contact surfaces of the blades and the impeller are increased, the principle that a triangle is most stable is met, meanwhile, the installation angles of the blades are gradually increased from the front portion to the rear portion, the blades are gradually reduced from an inlet to an outlet, the air outlet of the whole impeller is in a convergent (necking) state, noise can be refracted back at the position of the air outlet through the structure, and noise reduction is achieved. The impeller is self-locked in the impeller, noise generated during operation of the air cabinet is greatly reduced, and the speed ratio of the impeller can be increased by 20% compared with that of an ordinary flat plate blade impeller through the design of the blades.

Description

Technical Field

[0001] The utility model relates to an energy-efficient backward-inclined air handling unit impeller, specifically a blade-angle increasing type energy-efficient backward-inclined air handling unit impeller, belonging to the technical field of air handling unit impellers. Background Technique

[0002] An air handling unit generally includes a cabinet body, a surface cooler (heat exchanger), and a fan with a volute. After the fan blows air towards the surface cooler, the air is cooled by heat exchange and then blown out of the cabinet body, thereby achieving the regulation of air temperature.

[0003] Chinese Patent No. CN215333548U provides an air handling unit, including a cabinet body. The cabinet body has an air inlet and an air outlet. An impeller is arranged inside the cabinet body. An air extraction port communicating with the impeller is arranged on the side of the cabinet body. The air extraction port communicates with the air inlet. A plurality of air flow dividing plates are arranged below the air outlet of the cabinet body. The air flow dividing plates are arranged at intervals along the length direction of the air outlet. The extension direction of the air flow dividing plates is the same as the air outlet direction of the air outlet. During the working process, the impeller rotates to draw external gas into the cabinet body and then discharges it from the air outlet of the cabinet body. During the process of the air discharging from the air outlet, the negative pressure turbulence formed below the air outlet will be divided into a plurality of tiny air flows by the air flow dividing plates, effectively reducing the vibration caused by the negative pressure turbulence to the air handling unit and reducing the noise during the operation of the air handling unit.

[0004] However, although the above case effectively reduces the vibration caused by the negative pressure turbulence to the air handling unit and reduces the noise during the operation of the air handling unit, all the backward-inclined air handling unit impellers on the market adopt a single arc plate or flat blade type, which has the following disadvantages:

[0005] For the air handling unit equipped with a single-board impeller: the air volume and air pressure cannot meet the requirements of the laboratory test data, and the total pressure efficiency is relatively low;

[0006] For the air handling unit equipped with a single-board impeller: the strength of the impeller body is lacking, and the phenomenon of impeller damage often occurs due to the weight loss of the impeller;

[0007] 3. For the air handling unit equipped with a single-board impeller; the pneumatic noise is relatively large.

[0008] In view of this, the present utility model is specifically proposed Content of the Utility Model

[0009] The purpose of the present utility model is to provide a blade-angle increasing type energy-efficient backward-inclined air handling unit impeller to solve the above problems.

[0010] The present utility model achieves the above object through the following technical solutions. An impeller of a backward-inclined air cabinet with incrementally increasing blade angles and high efficiency and energy saving includes two blade assemblies, a fixing assembly, a first connecting assembly, and a second connecting assembly. One end of one of the blade assemblies is welded to the outer wall of one side of the fixing assembly. The first connecting assembly is welded to one end of one of the blade assemblies. The second connecting assembly is arranged at the bottom end of the first connecting assembly. The top end of the other blade assembly is welded to the bottom of the second connecting assembly. The fixing ring assembly is welded to the bottom end of the other blade assembly. The blade assembly includes two reinforcing round steels and a plurality of blades. The plurality of blades are evenly welded between the two reinforcing round steels.

[0011] Furthermore, the fixing assembly includes a fixing plate. A mounting seat is welded at the center of the top of the fixing plate, and two placement grooves are provided inside the mounting seat.

[0012] Furthermore, one side inner wall of the placement groove is installed with a connecting spring through a bolt, and one end of the connecting spring is installed with a key block through a bolt. A toothed block is integrally formed on one outer wall of the key block.

[0013] Furthermore, an adjusting bolt is installed on one outer wall of the fixing plate through a bearing, and an adjusting gear is threadedly connected to the top end of the adjusting bolt. The adjusting gear meshes with the toothed block.

[0014] Furthermore, the second connecting assembly includes a substrate. A mounting shell is welded at the center of one side of the top of the substrate, and an oil storage cavity is provided inside the mounting shell.

[0015] Furthermore, plugging grooves are provided on both outer walls of the mounting shell, and the plugging grooves communicate with the oil storage cavity. Hydraulic oil is filled between the plugging grooves and the oil storage cavity. One side inner wall of the plugging groove is installed with a mounting spring through a bolt, and one end of the mounting spring is installed with a plug block through a bolt. The plug block is slidably inserted into the inside of the plugging groove.

[0016] Furthermore, a threaded rod is installed on one side center of the bottom of the substrate through a bearing, and a piston plate is threadedly connected to the outside of the threaded rod. The piston plate is slidably connected inside the oil storage cavity.

[0017] Furthermore, the first connecting assembly includes a connecting plate. A clamping groove is provided at the center of the top of the connecting plate. The mounting shell is slidably inserted into the inside of the clamping groove. Limiting grooves are provided on both sides of the inner wall of the clamping groove. The plug block is slidably inserted into the inside of the limiting groove.

[0018] The technical effects and advantages of the utility model are as follows: (1) The contact surface between the blade and the impeller is increased and conforms to the principle that a triangle is the most stable. At the same time, the installation angle of the blade gradually increases from the front to the rear, and the blade gradually decreases from the inlet to the outlet. The entire impeller air outlet is in a convergent (shrinking) state. The structure can reflect the noise back at the air outlet position and self-lock inside the impeller, greatly reducing the noise generated when the wind cabinet is operating. The design of the blade can increase the impeller speed ratio by 20% compared with that of an ordinary flat blade impeller; (2) When the fixing component designed by the utility model connects the impeller to the motor on the volute, the mounting seat can be first connected to the motor output shaft. This process requires a worker to use a tool to turn the adjusting bolt, and then the adjusting gear will move with the two gear blocks. The two key blocks are moved so that they are retracted into the receiving grooves. When the motor output shaft is subsequently inserted into the mounting seat 202, the adjusting bolt is loosened. Under the action of the connecting spring, the key block moves inside the receiving groove and is inserted into the key groove of the motor output shaft, thereby realizing the rapid fixation between the motor output shaft and the impeller. (3) When a part of the impeller is damaged, the worker can rotate the threaded rod in the opposite direction, and then the piston plate will move downward inside the oil storage chamber, so that the hydraulic oil in the oil storage chamber and the plug-in groove is no longer under stress. Subsequently, under the action of the mounting spring, the plug block is retracted into the plug-in groove, so that the plug block is disengaged from the limit groove, so that the restriction between the connecting component 1 and the connecting component 2 is released, and the impeller is separated, so that the worker can replace the damaged part of the impeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the blade assembly structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the fixing assembly of the utility model;

[0022] Figure 4 This is a structural schematic diagram of a connection component of the utility model;

[0023] Figure 5 This is a structural schematic diagram of the second connection component of the utility model.

[0024] In the figure: 100, blade assembly; 101, reinforcing round steel; 102, blade; 200, fixing assembly; 201, fixing plate; 202, mounting seat; 203, placement groove; 204, connecting spring; 205, key block; 206, adjusting bolt; 207, tooth block; 208, adjusting gear; 300, connecting assembly one; 301, connecting plate; 302, card slot; 303, limiting groove; 400, connecting assembly two; 401, base plate; 402, mounting shell; 403, oil storage cavity; 404, plugging slot; 405, plug; 406, mounting spring; 407, piston plate; 408, threaded rod; 500, fixing ring assembly. Detailed implementation manner

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1-5 As shown, a blade angle increasing type high-efficiency energy-saving backward-inclined air cabinet impeller includes two blade assemblies 100, a fixing assembly 200, a connecting assembly one 300 and a connecting assembly two 400. One end of one blade assembly 100 is welded to the outer wall of one side of the fixing assembly 200, the connecting assembly one 300 is welded to one end of one blade assembly 100, the connecting assembly two 400 is arranged at the bottom end of the connecting assembly one 300, the top end of the other blade assembly 100 is welded to the bottom of the connecting assembly two 400, and the fixing ring assembly 500 is welded to the bottom end of the other blade assembly 100. The blade assembly 100 includes two reinforcing round steels 101 and a plurality of blades 102. The design of the reinforcing round steel 101 can improve the strength between the impellers. Since the contact surface between the blades 102 and the impeller is increased and conforms to the principle of the most stable triangle, it greatly improves that the installation angle of the blades 102 gradually increases from the front to the rear, so that the blades gradually narrow from the inlet to the outlet, making the entire impeller air outlet in a convergent (constricted) state. This structure can refract the noise back at the air outlet position and lock it inside the impeller, greatly reducing the noise generated during the operation of the air cabinet. The plurality of blades 102 are evenly welded between the two reinforcing round steels 101.

[0027] As a technical optimization solution of the utility model, the fixing component 200 includes a fixing plate 201, a mounting seat 202 is welded at the top center of the fixing plate 201, and two mounting grooves 203 are arranged inside the mounting seat 202, a connecting spring 204 is installed on one side of the inner wall of the mounting groove 203 by bolts, and a key block 205 is installed on one end of the connecting spring 204 by bolts, a tooth block 207 is integrally formed on the outer wall of one side of the key block 205, an adjusting bolt 206 is installed on the outer wall of one side of the fixing plate 201 through a bearing, and an adjusting gear 208 is threadedly connected to the top of the adjusting bolt 206. When the impeller is used, the impeller can be first connected to the electric motor on the volute. When the machines are connected together, the mounting base 202 can be sleeved on the motor output shaft, and then the adjusting bolt 206 can be turned with a tool, and then the adjusting gear 208 will move the two tooth blocks 207 towards each other, so that the two key blocks 205 are retracted into the receiving groove 203. Later, when the motor output shaft is inserted into the mounting base 202, the adjusting bolt 206 is loosened, and under the action of the connecting spring 204, the key block 205 will move inside the receiving groove 203, and the key block 205 will be stuck in the keyway of the motor output shaft, thereby realizing the rapid fixation between the motor output shaft and the impeller, and the adjusting gear 208 and the tooth block 207 are meshed with each other.

[0028] As a technical optimization scheme of the utility model, the second connection component 400 includes a base plate 401, a mounting shell 402 is welded at the center of one side of the top of the base plate 401, and an oil storage chamber 403 is arranged inside the mounting shell 402, plug-in slots 404 are opened on the outer walls of both sides of the mounting shell 402, and the plug-in slots 404 and the oil storage chamber 403 are interconnected, and the plug-in slots 404 and the oil storage chamber 403 are filled with hydraulic oil, a mounting spring 406 is installed on one side of the inner wall of the plug-in slot 404 by bolts, and an insert block 405 is installed on one end of the mounting spring 406 by bolts, and the insert block 405 is slidably inserted into the inside of the plug-in slot 404, a threaded rod 408 is installed at the center of one side of the bottom of the base plate 401 through a bearing, and the outer thread of the threaded rod 408 is threadedly connected to a piston plate 407, and the piston plate 407 is slidably connected to the oil storage chamber 403. Internally, the connecting component 300 includes a connecting plate 301, a slot 302 is provided at the top center of the connecting plate 301, and the mounting shell 402 is slidably inserted into the slot 302. Limiting slots 303 are provided on both sides of the inner wall of the slot 302. After discovering that a part of the impeller is damaged, the worker can reversely rotate the threaded rod 408, and then the piston plate 407 will move downward inside the oil storage chamber 403, so that the hydraulic oil inside the oil storage chamber 403 and the plug-in slot 404 is no longer under stress, and then under the action of the installing spring 406, the plug block 405 will retract into the plug-in slot 404, so that the plug block 405 is disengaged from the limiting slot 303, so that the restriction between the connecting component 1 300 and the connecting component 2 400 is released, so that the impellers are separated, so that the worker can replace the damaged part of the impeller, and the plug block 405 is slidably inserted into the limiting slot 303.

[0029] When the utility model applies the impeller, the impeller can be first connected with the motor on the volute, and the mounting seat 202 can be sleeved on the motor output shaft in the process, and then the adjusting bolt 206 can be rotated with a tool, and then the adjusting gear 208 will lead the two tooth blocks 207 to move toward each other, so that the two key blocks 205 are retracted into the inside of the mounting groove 203, and when the motor output shaft is inserted into the inside of the mounting seat 202, the adjusting bolt 206 is loosened, and under the action of the connecting spring 204, the key block 205 will move inside the mounting groove 203, and the key block 205 will be stuck in the keyway of the motor output shaft, so that the motor output shaft and the impeller are quickly fixed; when the impeller rotates subsequently, the contact surface between the blade 102 and the impeller is increased, and it conforms to the principle of the most stable triangle, which greatly improves the installation angle of the blade 102 from the front to the rear. The blades gradually shrink from the inlet to the outlet, so that the entire impeller air outlet is in a convergent (shrinking) state. This structure can reflect the noise back at the air outlet position and self-lock inside the impeller, greatly reducing the noise generated when the wind cabinet is operating. The design of the blades can increase the speed ratio of the impeller by 20% compared with the ordinary flat blade impeller. After that, if a part of the impeller is found to be damaged, the worker can reversely rotate the threaded rod 408, and then the piston plate 407 will move downward inside the oil storage chamber 403, so that the hydraulic oil inside the oil storage chamber 403 and the plug-in slot 404 is no longer under stress, and then under the action of the installation spring 406, the plug block 405 will retract into the plug-in slot 404, so that the plug block 405 is separated from the limit slot 303, so that the restriction between the connecting component 1 300 and the connecting component 2 400 is released, and the impeller is separated, so that the worker can replace the damaged part of the impeller.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A blade angle increasing type high efficiency energy saving backward inclined wind cabinet impeller, comprising two blade components (100), a fixing component (200), a connecting component 1 (300) and a connecting component 2 (400), characterized in that: One end of one of the blade assemblies (100) is welded to an outer wall of one side of the fixing assembly (200), the connecting assembly (300) is welded to one end of one of the blade assemblies (100), the connecting assembly (400) is arranged at the bottom end of the connecting assembly (300), the top end of another blade assembly (100) is welded to the bottom of the connecting assembly (400), the fixing ring assembly (500) is welded to the bottom end of another blade assembly (100), and the blade assembly (100) comprises two reinforcing round steels (101) and a plurality of blades (102), and the plurality of blades (102) are uniformly welded between the two reinforcing round steels (101).

2. The blade angle increasing type high-efficiency energy-saving backward-inclined wind cabinet impeller according to claim 1 is characterized by: The fixing assembly (200) comprises a fixing plate (201), a mounting seat (202) is welded at the top center of the fixing plate (201), and two placement grooves (203) are provided inside the mounting seat (202).

3. The blade angle increasing type high-efficiency energy-saving backward-inclined wind cabinet impeller according to claim 2 is characterized by: A connecting spring (204) is installed on one side of the inner wall of the placement groove (203) via bolts, and a key block (205) is installed on one end of the connecting spring (204) via bolts, and a tooth block (207) is integrally formed on the outer wall of one side of the key block (205).

4. The blade angle increasing type high-efficiency energy-saving backward-inclined wind cabinet impeller according to claim 3 is characterized by: An adjusting bolt (206) is installed on the outer wall of one side of the fixing plate (201) via a bearing, and an adjusting gear (208) is threadedly connected to the top end of the adjusting bolt (206), and the adjusting gear (208) and the gear block (207) are meshed with each other.

5. The blade angle increasing type high-efficiency energy-saving backward-inclined wind cabinet impeller according to claim 1 is characterized by: The second connection component (400) comprises a base plate (401), a mounting shell (402) is welded at the center of one side of the top of the base plate (401), and an oil storage cavity (403) is provided inside the mounting shell (402).

6. The blade angle increasing type high-efficiency energy-saving backward-inclined wind cabinet impeller according to claim 5 is characterized by: The outer walls of both sides of the mounting shell (402) are provided with plug-in slots (404), and the plug-in slots (404) and the oil storage chamber (403) are interconnected. Hydraulic oil is filled between the plug-in slots (404) and the oil storage chamber (403). A mounting spring (406) is installed on one side of the inner wall of the plug-in slot (404) via bolts, and an insert block (405) is installed on one end of the mounting spring (406) via bolts. The insert block (405) is slidably inserted into the plug-in slot (404).

7. The blade angle increasing type high-efficiency energy-saving backward-inclined wind cabinet impeller according to claim 6 is characterized by: A threaded rod (408) is installed at the center of one side of the bottom of the base plate (401) via a bearing, and the threaded rod (408) is externally threadedly connected to a piston plate (407), and the piston plate (407) is slidably connected to the inside of the oil storage chamber (403).

8. The blade angle increasing type high-efficiency energy-saving backward-inclined wind cabinet impeller according to claim 7 is characterized by: The connection component 1 (300) comprises a connection plate (301), a slot (302) is provided at the top center of the connection plate (301), the mounting shell (402) is slidably inserted into the slot (302), limiting slots (303) are provided on both sides of the inner wall of the slot (302), and the insert block (405) is slidably inserted into the limiting slot (303).

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