CN218479934U

CN218479934U - Fan of breathing machine

Info

Publication number: CN218479934U
Application number: CN202222759895.XU
Authority: CN
Inventors: 于晓飞
Original assignee: Guangdong Minfei Electromechanical Co ltd
Current assignee: Guangdong Minfei Electromechanical Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-02-14
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a fan of breathing machine, it includes spiral case, motor, impeller and bottom, and the upper end of spiral case has a wind chamber and one and the air-out passageway of wind chamber intercommunication, and the air intake that communicates with the wind chamber is seted up at the top of spiral case. The lower extreme of spiral case still is equipped with the installation cavity with the wind cavity intercommunication, and the motor is installed in the installation cavity, and the wind cavity is located to the impeller, and the bottom is installed in the bottom of spiral case and closing cap installation cavity, and the motor includes stator module, rotor subassembly and rotor cover frame, and rotor cover frame is installed in stator module, and the rotor subassembly rotates to be installed in rotor cover frame, and the rotor subassembly has the installation end that penetrates the wind cavity, and the impeller mounting is in the installation end. The utility model discloses a fan of breathing machine has the structure simple relatively, assembles convenient advantage.

Description

Fan of breathing machine

Technical Field

The utility model relates to the field of medical equipment, especially, relate to fan of breathing machine.

Background

The blower is the core component of the household respirator, and has the functions of increasing the gas pressure and delivering gas by means of the input mechanical energy so as to improve the oxygenation and ventilation of the patient, reduce the work of breathing, support the breathing and circulation functions and treat respiratory failure.

The existing fan comprises a volute, a motor and an impeller, wherein the motor and the impeller are arranged in the volute, the motor is provided with a casing, and actually the casing of the motor and the volute are overlapped in function, so that the structure of the fan is complex, and the assembly of the motor is inconvenient.

Therefore, there is a need for a ventilator with a relatively simple structure and easy assembly to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fan of breathing machine that the structure is simple relatively, the equipment is convenient.

In order to achieve the above object, the utility model discloses a fan of breathing machine, including spiral case, motor, impeller and bottom, the upper end of spiral case has a wind chamber and one and the air-out passageway of wind chamber intercommunication, and the air intake with wind chamber intercommunication is seted up at the top of spiral case. The lower extreme of spiral case still is equipped with the installation cavity with the wind chamber intercommunication, and the motor is installed in the installation cavity, and the wind chamber is located to the impeller, and the bottom is installed in the bottom of spiral case and closing cap installation cavity. The motor includes stator module, rotor subassembly and rotor cover frame, and the rotor cover frame is installed in stator module, and the rotor subassembly rotates to be installed in the rotor cover frame, and the rotor subassembly has the installation end that penetrates the wind chamber, and the impeller is installed in the installation end.

Preferably, the volute comprises an upper shell and a lower shell which are detachably assembled, the bottom of the upper shell is inwards concave to form a first space and a first groove, the air inlet is arranged at the top of the upper shell and communicated with the first space, the top of the lower shell is inwards concave to form a second space and a second groove, the first space is communicated with the second space to form an air cavity, and the first groove is communicated with the second groove to form an air outlet channel.

Preferably, the lower case has a mounting body protruding downward, the lower case further has a structural body protruding into the second space, the mounting cavity is disposed in the mounting body and the structural body, and the bottom cover is detachably mounted at the bottom of the mounting body.

Preferably, the motor further comprises a locking member that locks the rotor spider to the stator assembly.

Preferably, the rotor frame is a cylindrical structure, the first end of the rotor frame is in a closed-up arrangement and forms a butt-joint positioning structure, the rotor assembly is rotatably mounted in the rotor frame through a first bearing and a second bearing, the first bearing is connected to the butt-joint positioning structure, and the second bearing is mounted in the second end of the rotor frame.

Preferably, the motor further comprises a retainer ring for limiting the second bearing to be disengaged, the retainer ring is installed in the second end of the rotor sleeve frame, and a gasket is arranged between the retainer ring and the second bearing.

Preferably, the first end of the rotor sleeve frame forms a stepped shaft structure, the outer peripheral wall of the stepped shaft structure forms a matching locking structure, the locking piece has a locking structure, and the locking piece is locked to the stepped shaft structure by the locking of the locking structure and the matching locking structure.

Preferably, the installation cavity is communicated with the air cavity through a communicating port arranged on the structure body, and the second end of the rotor sleeve frame penetrates into the communicating port and is arranged at intervals with the inner side wall of the communicating port.

Preferably, the motor further comprises an O-shaped ring, the O-shaped ring is sleeved on the peripheral side wall of the rotor sleeve frame, and the locking piece compresses the O-shaped ring to the stator assembly.

Preferably, the impeller includes a disc-shaped main body, and a plurality of main blades and splitter blades fixed to a top side surface of the main body, the main blades and the splitter blades are bent and extended in an arc shape from a center of the main body to a peripheral direction, the main blades and the splitter blades are alternately arranged at intervals, and the main body is inclined downward from the center to the peripheral direction.

Compared with the prior art, in the utility model discloses in, the motor cancellation casing, rotor cover frame provide the support for the rotor subassembly, and the motor is adorned in the installation intracavity moreover, and the spiral case provides support and protection to the motor to can save this part of casing, make simple structure. In addition, during the equipment, directly pack into the motor the installation cavity can, the rotor subassembly need not be with the help of the casing installation, and it will be more simple and convenient to assemble rotor subassembly to the casing with rotor cover frame phase comparison, therefore the installation convenience improves greatly, has effectively simplified the installation.

Drawings

Fig. 1 is a perspective view of the blower of the breathing machine of the present invention.

Fig. 2 is a perspective view of the ventilator of the present invention at another angle.

Fig. 3 is an exploded perspective view of the blower of the respirator of the present invention.

Fig. 4 is a perspective exploded view of the ventilator shown in fig. 3, further exploded.

Fig. 5 is a top view of the blower of the ventilator of the present invention.

Fig. 6 isbase:Sub>A sectional view taken along the linebase:Sub>A-base:Sub>A in fig. 5.

Fig. 7 is a perspective view of the blower of the respirator of the present invention after the upper housing is hidden.

Fig. 8 is a perspective view of the ventilator shown in fig. 7 with the impeller further concealed.

Fig. 9 is a perspective view of the upper case.

Fig. 10 is an exploded perspective view of the motor.

Fig. 11 is a front sectional view of the motor.

Fig. 12 is a plan view of the impeller.

Fig. 13 is a sectional view taken along the line B-B in fig. 12.

Detailed Description

In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.

As shown in fig. 1 to 6, the blower 100 of the ventilator of the present invention includes a volute 10, a motor 20, an impeller 30, and a bottom cover 40. The upper end of the volute 10 is provided with an air chamber 11 and an air outlet channel 12 communicated with the air chamber 11, and the top of the volute 10 is provided with an air inlet 13 communicated with the air chamber 11. The lower end of the volute 10 is further provided with an installation cavity 14 communicated with the air cavity 11, the motor 20 is installed in the installation cavity 14, and the impeller 30 is arranged in the air cavity 11. The bottom cover 40 is mounted to the bottom end of the volute 10 and covers the mounting chamber 14.

The motor 20 includes a stator assembly 21, a rotor assembly 22, and a rotor yoke 23. The rotor housing 23 is mounted in the stator assembly 21, the rotor assembly 22 is rotatably mounted in the rotor housing 23, the rotor assembly 22 has a mounting end 221 penetrating into the wind chamber 11, and the impeller 30 is mounted at the mounting end 221.

In the utility model discloses in, motor 20 cancels the casing, and rotor stock 23 provides the support for rotor subassembly 22, and motor 20 adorns in installation cavity 14 moreover, and spiral case 10 provides support and protection to motor 20 to can save this part of casing, make simple structure. In addition, during assembly, the motor 20 is directly installed in the installation cavity 14, the rotor assembly 22 is installed without a machine shell, and the installation of the rotor assembly 22 in the rotor sleeve frame 23 is simpler and more convenient than the installation of the rotor assembly 22 in the machine shell, so that the installation convenience is greatly improved, and the installation process is effectively simplified.

After the stator assembly 21 is powered on, the rotor assembly 22 rotates to cut the magnetic induction lines, so as to drive the impeller 30 to rotate, and the air is introduced into the air cavity 11 through the air inlet 13 and then blown out from the air outlet channel 12.

It should be noted that the installation cavity 14 is communicated with the air cavity 11, and a part of the air flowing into the air cavity 11 flows into the installation cavity 14, and the part of the air carries away the heat generated by the motor 20 during operation, so that the heat generated by the motor 20 during operation is not too high. The bottom cover 40 provides protection to the motor 20 and blocks the escape of the motor 20.

It should be noted that the stator assembly 21 and the rotor assembly 22 may be of conventional structures, which are well known to those skilled in the art and therefore will not be described herein.

As shown in fig. 1 to 9, the scroll casing 10 includes an upper casing 15 and a lower casing 16 which are detachably assembled. The bottom of the upper housing 15 is recessed into a first space 151 and a first groove 152, and the air inlet 13 is opened at the top of the upper housing 15 and is communicated with the first space 151. The top of the lower case 16 is recessed inward by a second space 161 and a second groove 162. The first space 151 communicates with the second space 161 and forms the air chamber 11, and the first groove 152 communicates with the second groove 162 and forms the air outlet channel 12. The upper casing 15 and the lower casing 16 are detachably mounted to facilitate the mounting of the impeller 30, and the space of the formed wind chamber 11 is large. The upper housing 15 and the lower housing 16 are mounted by screws, and of course, according to actual needs, the mounting may be performed by using a snap or a threaded connection.

Further, the lower case 16 has a mounting body 163 protruding downward, the lower case 16 further has a structural body 164 protruding into the second space 161, the mounting cavity 14 is provided in the mounting body 163 and the structural body 164, and the bottom cover 40 is detachably mounted to the bottom of the mounting body 163. The bottom cover 40 is mounted to the lower case 16 by screws. Preferably, the mounting body 163 and the structural body 164 are cylindrical or cylinder-like structures, but are not limited thereto. When the upper casing 15 and the lower casing 16 are mounted, the impeller 30 and a part of the structure 164 are located in the first space 151, so that the impeller 30 can more easily introduce gas into the wind chamber 11.

As shown in fig. 4, 6, 10 and 11, the motor 20 further includes a locking member 24, the locking member 24 locking the rotor hub 23 to the stator assembly 21. The rotor housing 23 is conveniently mounted within the stator assembly 21 by means of a locking member 24. The rotor holder 23 is a cylindrical structure, a first end of the rotor holder 23 is disposed in a closed-up manner and forms a butting positioning structure 231, the rotor assembly 22 is rotatably mounted in the rotor holder 23 through a first bearing 25 and a second bearing 26, the first bearing 25 is connected to the butting positioning structure 231, and the second bearing 26 is mounted in a second end of the rotor holder 23. The first bearing 25 and the second bearing 26 provide stable support for the rotor assembly 22, the first bearing 25 and the abutment locating feature 231, the abutment locating feature 231 locates and positions the first bearing 25, locates the rotor assembly 22 and limits axial movement of the rotor assembly 22.

As shown in fig. 6, 10 and 11, the motor 20 further includes a retainer ring 27 for restricting the second bearing 26 from coming out. A retainer ring 27 is mounted in the second end of the rotor housing 23, and a spacer 28 is provided between the retainer ring 27 and the second bearing 26. The retainer ring 27 limits the escape of the second bearing 26 and thus the axial movement of the rotor assembly 22, preventing escape. The spacers 28 provide a cushioning function and protection. Preferably, the second end of the rotor frame 23 is provided with a mounting groove 232, and the retainer ring 27 is mounted in the mounting groove 232, so that the mounting stability of the retainer ring 27 is improved.

As shown in fig. 4, 6, 10 and 11, a first end of the rotor holder 23 forms a stepped shaft structure 233, an outer peripheral wall of the stepped shaft structure 233 is formed with a mating lock structure 234, the locking member 24 has a locking structure 241, and the locking member 24 is locked to the stepped shaft structure 233 by the locking of the locking structure 241 and the mating lock structure 234. The stepped shaft structure 233 provides clearance for the locking member 24 to avoid interfering with the structure of the stator assembly 21. For example, the locking structure 241 and the locking structure 234 are screw structures, but not limited thereto, for example, the locking structure 241 and the locking structure 234 may also be a snap structure. The locking member 24 is a circular ring structure, but is not limited thereto. The motor 20 of the present invention further includes an O-ring 29. The O-shaped ring 29 is sleeved on the peripheral side wall of the rotor sleeve frame 23, the locking piece 24 compresses the O-shaped ring 29 to the stator assembly 21, and the locking piece 24 pre-tightens the O-shaped ring 29, so that the rotor sleeve frame 23 can be effectively prevented from loosening when the motor 20 works.

As shown in fig. 3, 4, 6, 7, 8, 10 and 11, the rotor assembly 22 includes a rotating shaft 222, one end of the rotating shaft 222 penetrating into the wind cavity 11 forms a mounting end 221, and the mounting end 221 also penetrates out of the rotor frame 23. The first bearing 25 and the second bearing 26 are attached to the rotating shaft 222.

As shown in fig. 4, 6, 10 and 11, the mounting chamber 14 communicates with the air chamber 11 through a communication port 17 opened in the structural body 164, and a second end of the rotor stock 23 penetrates into the communication port 17 and is spaced apart from an inner sidewall of the communication port 17. The air flows through the gap between the rotor frame 23 and the inner side wall of the communication port 17, so that the air in the air chamber 11 and the air in the mounting chamber 14 are exchanged and circulated, and the heat generated by the motor 20 during operation is taken away.

The motor 20 further includes an end plate 211 mounted to the stator assembly 21, the end plate 211 is perpendicular to the rotation axis 222, the end plate 211 has a through hole 212, the locking member 24 and the first end of the rotor holder 23 penetrate through the through hole 212, and the end plate 211 provides protection for the stator assembly 21. Preferably, the end plate 211 is a circular plate and the through-hole 212 is a circular through-hole, but not limited thereto.

As shown in fig. 3, 4, 6, 7, 12 and 13, the impeller 30 includes a disk-shaped main body 31, and a plurality of main blades 32 and splitter blades 33 fixed to the top surface of the main body 31. The main blades 32 and the splitter blades 33 are bent and extended in an arc shape from the center to the periphery of the main body 31, and the main blades 32 and the splitter blades 33 are alternately arranged at intervals. The main body 31 is inclined downward from the center to the periphery thereof. Since the main body 31 is inclined downward from the center to the periphery, the downward pressure of the main body 31 to the gas is effectively increased, thereby improving the stability of the impeller 30. The inclination angle of the main body 31 is about 7 °, but not limited thereto, and can be adjusted appropriately according to the application, such as design adjustment in the range of 4-20 °.

The top side of the body 31 is provided with 10

main blades

32 and 10 splitter blades 33. The number of the main blades 32 and the splitter blades 33 can be adjusted according to actual needs. The main blades 32 and the splitter blades 33 are designed to have different heights, and the heights of the main blades from the center to the periphery of the main body 31 are gradually reduced, so that the stability of the output gas is improved.

The main body 31 includes a mounting region 311 for mounting the main blade 32 and the splitter blade 33, and a pressure maintaining region 312 located at an outer ring of the mounting region 311 and surrounding the mounting region 311, and a plurality of notches 313 are formed on a peripheral sidewall of the main body 31. When the impeller 30 rotates, the main blade 32 and the splitter blade 33 pressurize the gas, a high pressure area is formed in the mounting area 311, and since the main body 31 is provided with the pressure-maintaining area 312, the gas cannot flow out immediately when separating from the main blade 32 and the splitter blade 33 under the action of centrifugal force, so that the pressure is rapidly reduced, the gas flows to the pressure-maintaining area 312, and the pressure-maintaining area 312 continuously maintains stable pressure. Because the plurality of notches 313 are formed on the peripheral side of the main body 31, when the gas flowing out of the pressure maintaining area 312 passes through the notches 313, turbulent flow can be eliminated, the output air pressure and the air flow are stable, and the noise problem caused by the turbulent flow is reduced.

The following brief description discloses the installation, the use of the fan 100 of the breathing machine of the utility model: the first bearing 25 and the second bearing 26 are assembled to the rotating shaft 222 of the rotor assembly 22, the assembled structure is then assembled into the stator assembly 21, the spacer 28 and the retainer ring 27 are assembled to lock the rotor assembly 22, the O-ring 29 is then assembled, the locking member 24 is screwed to the stepped shaft structure 233 to lock the rotor housing 23, and the motor 20 is assembled. The assembled motor 20 is loaded into the mounting cavity 14, the impeller 30 is loaded to the mounting end 221 of the rotor assembly 22, the upper case 15 is assembled to the lower case 16 using screws, and the bottom cover 40 is loaded to the bottom of the mounting body 163 using screws, thereby completing the installation of the blower 100 of the respirator. When the air-conditioner is in use, the stator assembly 21 is powered on, the rotor assembly 22 rotates by cutting magnetic induction lines, so that the impeller 30 is driven to rotate, and air flows into the air cavity 11 through the air inlet 13 and is blown out from the air outlet channel 12.

The above disclosure is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and the equivalent changes made by the claims of the present invention are all covered by the present invention.

Claims

1. The fan of the breathing machine comprises a volute, a motor, an impeller and a bottom cover, wherein an air cavity and an air outlet channel communicated with the air cavity are formed in the upper end of the volute, an air inlet communicated with the air cavity is formed in the top of the volute, the fan is characterized in that the lower end of the volute is further provided with an installation cavity communicated with the air cavity, the motor is installed in the installation cavity, the impeller is arranged in the air cavity, the bottom cover is installed at the bottom end and a sealing cover of the volute, the motor comprises a stator assembly, a rotor assembly and a rotor sleeve frame, the rotor sleeve frame is installed in the stator assembly, the rotor assembly is rotatably installed in the rotor sleeve frame, the rotor assembly penetrates into the installation end of the air cavity, and the impeller is installed in the installation end.

2. The blower of the respirator according to claim 1, wherein the volute comprises an upper housing and a lower housing which are detachably assembled, a first space and a first groove are recessed in the bottom of the upper housing, the air inlet is formed in the top of the upper housing and communicated with the first space, a second space and a second groove are recessed in the top of the lower housing, the first space is communicated with the second space and forms the air chamber, and the first groove is communicated with the second groove and forms the air outlet channel.

3. The blower of the ventilator according to claim 2, wherein the lower housing has a mounting body protruding downward, the lower housing further has a structural body protruding into the second space, the mounting cavity is provided in the mounting body and the structural body, and the bottom cover is detachably mounted on the bottom of the mounting body.

4. The blower of the ventilator of claim 1 wherein the motor further comprises a lock that locks the rotor hub to the stator assembly.

5. The blower of the ventilator according to claim 1, wherein the rotor frame is a cylindrical structure, a first end of the rotor frame is disposed in a closed-up manner and forms a docking positioning structure, the rotor assembly is rotatably mounted in the rotor frame through a first bearing and a second bearing, the first bearing is mounted in the docking positioning structure, and the second bearing is mounted in a second end of the rotor frame.

6. The blower of claim 5, wherein the motor further comprises a retainer ring for limiting the second bearing from falling out, the retainer ring is mounted in the second end of the rotor frame, and a spacer is disposed between the retainer ring and the second bearing.

7. The blower of the ventilator according to claim 4, wherein the first end of the rotor frame forms a stepped shaft structure, the outer peripheral wall of the stepped shaft structure is formed with a mating lock structure, and the locking member has a locking structure, and the locking member is locked to the stepped shaft structure by locking the locking structure with the mating lock structure.

8. The blower of the respirator according to claim 3, wherein the mounting cavity is communicated with the air cavity through a communication opening provided in the structure, and the second end of the rotor frame penetrates into the communication opening and is spaced apart from the inner side wall of the communication opening.

9. The blower of the ventilator of claim 4 wherein the motor further comprises an O-ring fitted around a peripheral sidewall of the rotor frame, the locking member compressing the O-ring to the stator assembly.

10. The blower of the ventilator according to claim 1, wherein the impeller includes a disk-shaped main body and a plurality of main blades and splitter blades fixed to a top side of the main body, the main blades and the splitter blades extend in an arc shape from a center of the main body to a periphery thereof, the main blades and the splitter blades are alternately arranged at intervals, and the main body is arranged in a downward inclination from the center thereof to the periphery thereof.