CN211536045U - Novel high-efficient liquid medicine atomizing reposition of redundant personnel device - Google Patents

Novel high-efficient liquid medicine atomizing reposition of redundant personnel device Download PDF

Info

Publication number
CN211536045U
CN211536045U CN201922384743.4U CN201922384743U CN211536045U CN 211536045 U CN211536045 U CN 211536045U CN 201922384743 U CN201922384743 U CN 201922384743U CN 211536045 U CN211536045 U CN 211536045U
Authority
CN
China
Prior art keywords
pipe
medicine
air inlet
inlet pipe
storage cup
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201922384743.4U
Other languages
Chinese (zh)
Inventor
姜永泓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Agricultural University
Original Assignee
Sichuan Agricultural University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sichuan Agricultural University filed Critical Sichuan Agricultural University
Priority to CN201922384743.4U priority Critical patent/CN211536045U/en
Application granted granted Critical
Publication of CN211536045U publication Critical patent/CN211536045U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Special Spraying Apparatus (AREA)
  • Nozzles (AREA)

Abstract

The utility model discloses a novel high-efficient liquid medicine atomizing reposition of redundant personnel device, including storing up the medicine cup, the fixed toper intake pipe that is equipped with in centre of storing up the medicine cup, the one end of toper intake pipe is run through the bottom of storing up the medicine cup, just, to the outside extension of storing up the medicine cup is linked together with the hose that admits air, the hose that admits air is kept away from the one end of toper intake pipe is connected with compression air pump, one side of toper intake pipe is located the inside cover of storing up the medicine cup is equipped with the feed liquor pipe, top one side of feed liquor pipe is equipped with a plurality of through-holes, the through-hole is kept away from the one end of toper intake pipe is equipped with the atomizing wafer, the feed liquor pipe is kept away from one side of through-hole with be. Has the advantages that: the device simple structure, convenient operation is used, increases the crushing degree of medicine in the atomization process, makes things convenient for patient's inhalation, has increased the comfort.

Description

Novel high-efficient liquid medicine atomizing reposition of redundant personnel device
Technical Field
The utility model relates to an atomizing diverging device's design field particularly, relates to a novel high-efficient liquid medicine atomizing diverging device.
Background
The atomizer atomizes the test solution. The nebulizer is an important part of the atomization system, and its performance has a significant influence on the precision of the measurement and chemical interference. Therefore, the atomizer is required to have stable spraying, fine and uniform droplets, and high atomization efficiency.
The atomizer is mainly used for treating various upper and lower respiratory system diseases, such as common cold, fever, cough, asthma, sore throat, pharyngitis, rhinitis, bronchitis, pneumoconiosis, and other diseases in trachea, bronchus, alveolus, and thoracic cavity. The aerosol inhalation therapy is an important and effective treatment method in the treatment method of respiratory system diseases, and the aerosol inhaler is adopted to atomize the liquid medicine so as to conveniently enter the respiratory tract and the lung for deposition in a breath inhalation mode, thereby achieving the purpose of painless and rapid effective treatment.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel high-efficient liquid medicine atomizing reposition of redundant personnel device to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a novel high-efficiency liquid medicine atomization shunting device comprises a medicine storage cup, wherein a conical air inlet pipe is fixedly arranged in the middle of the medicine storage cup, one end of the conical air inlet pipe penetrates through the bottom of the medicine storage cup and extends towards the outside of the medicine storage cup to be communicated with an air inlet hose, one end, away from the conical air inlet pipe, of the air inlet hose is connected with a compressed air pump, one side of the conical air inlet pipe is positioned in the medicine storage cup, a liquid inlet pipe is sleeved inside the medicine storage cup, a plurality of through holes are formed in one side of the top of the liquid inlet pipe, an atomization wafer is arranged at one end, away from the conical air inlet pipe, of the through holes, a liquid inlet is formed between one side, away from the through holes, of the liquid inlet pipe and the medicine storage cup, a first filter screen is arranged at the top of the conical air inlet pipe, a sealing, the utility model discloses a medicine storage cup, including medicine storage cup, outlet duct, motor, support device, inlet duct, storage cup, the one end that the outlet duct was kept away from medicine storage cup is linked together with inhaling the fog cover, be equipped with the induced air device on the outlet duct, the induced air device is including placing the box, the both sides of placing the box with the outlet duct is linked together, the inside of placing the box is equipped with the motor, the output of motor is equipped with the fan, motor and strutting arrangement, one side of outlet duct is equipped with reflux unit, the cover is equipped with the closing plate on the feed liquor pipe, be equipped with.
Furthermore, a threaded hole is formed in the middle of the sealing plate, an external thread is arranged on the side wall of the liquid inlet pipe, and the threaded hole is matched with the external thread.
Furthermore, the induced draft device is including placing the box, the both sides of placing the box with the outlet duct is linked together, the inside of placing the box is equipped with the motor, the output of motor is equipped with the fan, motor and strutting arrangement, one side of outlet duct is equipped with reflux unit.
Furthermore, the supporting device comprises a waterproof box, the motor is arranged inside the waterproof box, the extending end of the motor is used for extending out of the waterproof box and connected with the fan, supporting rods are fixedly arranged on two sides of the waterproof box, and the other ends of the supporting rods are fixedly connected with the inner wall of the placing box.
Furthermore, the reflux device comprises a reflux pipe, one end of the reflux pipe is communicated with the air outlet pipe, the other end of the reflux pipe is communicated with the medicine storage cup, and a first control valve is arranged on the reflux pipe.
Furthermore, a handle is fixedly arranged on one side of the medicine storage cup, and a convex block is arranged on one side of the top of the sealing cover.
Furthermore, one end of the conical air inlet pipe is connected with the air inlet hose through a connecting piece.
Furthermore, air outlet holes are formed in the two sides of the fog absorbing cover.
Furthermore, one side of the return pipe is positioned on the inner wall of the medicine storage cup and is fixedly provided with a second filter.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) adding liquid medicine into a medicine storage cup, fixedly connecting a sealing plate and a liquid inlet pipe in a threaded manner after the liquid medicine is added, covering a sealing cover above the medicine storage cup, placing a mist suction cover at the mouth and nose of a patient, then pressing a switch on a compression air pump, blowing compressed air into a conical air inlet pipe through an air inlet hose, simultaneously opening a second control valve, enabling air to enter the medicine storage cup through a branch pipe, enabling the pressure in the medicine storage cup to be increased, sending the medicine in the medicine storage cup to the top of the conical air inlet pipe through a liquid inlet and the liquid inlet pipe, simultaneously sending the compressed air in the air inlet hose into the conical air inlet pipe through the air inlet hose, spraying and shunting the medicine at one end of the conical air inlet pipe, atomizing the liquid medicine, and further scattering the atomized medicine through a first filter screen and a fan, the medicine is atomized to be finer particles, so that the crushing degree is greatly increased, the inhalation treatment of a patient is facilitated, and the comfort is increased;
(2) the sealing plate and the liquid inlet pipe are respectively provided with a threaded hole and an external thread, so that the threaded connection between the sealing plate and the liquid inlet pipe can be realized, and the stability of the placement of the sealing plate can be improved;
(3) the supporting device can support the motor, meanwhile, the suspension of the motor is avoided, so that the stability of the motor can be increased, meanwhile, the waterproof box arranged on the outer side of the motor can protect the motor, the use safety is improved, and the service life of the motor is prolonged;
(4) the reflux device can collect the medicine liquefied in the flowing process to flow back, so that the waste of oil stains is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a novel high-efficiency liquid medicine atomization and distribution device according to an embodiment of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 1;
fig. 4 is a schematic structural diagram of a first filter screen in a novel high-efficiency liquid medicine atomization and distribution device according to an embodiment of the present invention.
Reference numerals:
1. a medicine storage cup; 2. a conical air inlet pipe; 3. an air intake hose; 4. compressing the air pump; 5. a liquid inlet pipe; 6. A through hole; 7. atomizing the wafer; 8. a liquid inlet; 9. a first filter screen; 10. a sealing cover; 11. an air outlet pipe; 12. a fog absorbing cover; 13. placing the box; 14. a motor; 15. a fan; 16. a sealing plate; 17. a waterproof box; 18. a support bar; 19. a return pipe; 20. a handle; 21. a bump; 22. an air outlet; 23. second filtering; 24. and (4) branch pipes.
Detailed Description
The following, with reference to the drawings and the detailed description, further description of the present invention is made:
the first embodiment is as follows:
referring to fig. 1-4, a novel high-efficiency liquid medicine atomization and distribution device according to an embodiment of the present invention includes a medicine storage cup 1, a conical air inlet pipe 2 is fixedly disposed in the middle of the medicine storage cup 1, one end of the conical air inlet pipe 2 penetrates through the bottom of the medicine storage cup 1, and extends to the outside of the medicine storage cup 1 to communicate with an air inlet hose 3, one end of the air inlet hose 3 away from the conical air inlet pipe 2 is connected with a compressed air pump 4, one side of the conical air inlet pipe 2 is located inside the medicine storage cup 1 and is sleeved with a liquid inlet pipe 5, one side of the top of the liquid inlet pipe 5 is provided with a plurality of through holes 6, one end of the through holes 6 away from the conical air inlet pipe 2 is provided with an atomization wafer 7, a liquid inlet 8 is disposed between one side of the liquid inlet pipe 5 away from the through holes 6 and the medicine storage cup 1, the top of the, a sealing cover 10 is arranged on one side, away from the conical air inlet pipe 2, of the first filter screen 9, an air outlet pipe 11 is arranged on one side of the top of the medicine storage cup 1, one end, away from the medicine storage cup 1, of the air outlet pipe 11 is communicated with a mist suction cover 12, an air inducing device is arranged on the air outlet pipe 11, a sealing plate 16 is sleeved on the liquid inlet pipe 5, a branch pipe 24 is arranged on the air inlet hose 3, one end of the branch pipe 24 is communicated with the medicine storage cup 1, a second control valve is arranged on the branch pipe 24, medicine liquid is added into the medicine storage cup 1, the sealing plate 16 is fixedly connected with the liquid inlet pipe 5 through threads after the medicine liquid is added, then the sealing cover 10 is covered above the medicine storage cup 1, the mist suction cover 12 is placed at the mouth and nose of a patient, then a switch on the compression air pump 4 is pressed, and compressed air can be blown into the conical air, open the second control valve simultaneously, it is gaseous to enter into storage medicine cup 1 through branch pipe 24, make the pressure grow in the storage medicine cup 1, will send into the top of toper intake pipe 2 through inlet 8 and feed liquor pipe 5 to the medicine in the storage medicine cup 1, compressed air in the hose 3 that admits air simultaneously will send into toper intake pipe 2 through the hose 3 that admits air, and will spout the medicine of 2 one ends of toper intake pipe and scatter the reposition of redundant personnel, atomize liquid medicine, then further scattering is carried out to the atomizing medicine to there are first filter screen and fan, make medicine atomizing more tiny of granule, great increase crushing degree, make things convenient for patient's inhalation therapy, the comfort has been increased.
Example two:
referring to fig. 1 to 3, for the sealing plate 16, a screw hole is provided in the middle of the sealing plate 16, the side wall of the liquid inlet pipe 5 is provided with an external thread, the threaded hole is matched with the external thread, the sealing plate 16 and the liquid inlet pipe 5 are respectively provided with a threaded hole and an external thread, thereby realizing the threaded connection between the sealing plate 16 and the liquid inlet pipe 5, simultaneously increasing the stability of the placement of the sealing plate 16, for the air inducing device, the air inducing device comprises a placing box 13, two sides of the placing box 13 are communicated with the air outlet pipe 11, a motor 14 is arranged inside the placing box 13, the output end of the motor 14 is provided with a fan 15, a reflux device is arranged on one side of the air outlet pipe 11 of the motor 14 and the supporting device, and the air inducing device can introduce atomized liquid medicine in the medicine storage cup 1 into the mist absorbing cover 12; for the supporting device, the supporting device comprises a waterproof box 17, the motor 14 is arranged inside the waterproof box 17, the extending end of the motor 14 is connected with the fan 15 through the waterproof box 17, supporting rods 18 are fixedly arranged on two sides of the waterproof box 17, the other ends of the supporting rods 18 are fixedly connected with the inner wall of the placing box 13, the supporting device can support the motor 14 and simultaneously avoid the suspended placing of the motor 14, so that the placing stability of the motor 14 can be improved, meanwhile, the waterproof box 17 arranged on the outer side of the motor 14 can protect the motor 14, the use safety is improved, and the service life of the motor 14 is prolonged; for the reflux device, the reflux device comprises a reflux pipe 19, one end of the reflux pipe 19 is communicated with the air outlet pipe 11, the other end of the reflux pipe 19 is communicated with the medicine storage cup 1, a first control valve is arranged on the reflux pipe 19, and the reflux device can collect and reflux the medicine liquefied in the flowing process, so that the waste of oil stains is avoided; for the medicine storage cup 1, a handle 20 is fixedly arranged on one side of the medicine storage cup 1, a convex block 21 is arranged on one side of the top of the sealing cover 10, the handle 20 is convenient to hold the medicine storage cup 1 in the using process, and meanwhile, the convex block 21 is arranged on the sealing cover 10, so that the sealing cover 10 is convenient to take, and the using convenience is improved; for the conical air inlet pipe 2, one end of the conical air inlet pipe 2 is connected with the air inlet hose 3 through a connecting piece, and the connecting piece is convenient for the conical air inlet pipe 2 to be communicated with the air inlet hose 3; for the mist inhalation cover 12, the two sides of the mist inhalation cover 12 are both provided with the air outlet holes 22, and the air outlet holes 22 are convenient for the exhaust of the exhaled air in the atomization process, thereby facilitating the respiration; for the return pipe 19, a second filter 23 is fixedly arranged on one side of the return pipe 19 on the inner wall of the medicine storage cup 1, and the second filter can filter the liquefied medicine flowing back into the medicine storage cup 1.
To sum up, with the aid of the above technical scheme of the utility model, for the convenient understanding the above technical scheme of the utility model, just below the utility model discloses theory of operation or the mode of operation at the actual process carry out the detailed description:
in practical application, firstly, the sealing plate 16 is rotated to separate the sealing plate 16 from the liquid inlet pipe 5, the sealing plate 16 is taken out after separation, liquid medicine is added into the medicine storage cup 1, the sealing plate 16 is fixedly connected with the liquid inlet pipe 5 again through threads after the liquid medicine is added, then the sealing cover 10 is covered above the medicine storage cup 1, the mist suction cover 12 is placed at the mouth and nose of a patient by holding the handle 20, then the switch on the compressed air pump 4 is pressed, compressed air can be blown into the conical air inlet pipe 2 through the air inlet hose 3, meanwhile, the second control valve is opened, air can enter the medicine storage cup 1 through the branch pipe 24, the pressure in the medicine storage cup 1 is increased, the medicine in the medicine storage cup 1 can be sent to the top of the conical air inlet pipe 2 through the liquid inlet 8 and the liquid inlet pipe 5, and simultaneously the compressed air in the air inlet hose 3 can be sent into the conical air inlet pipe 2 through the air inlet hose 3, and will spray the reposition of redundant personnel to the medicine of 2 one ends of toper intake pipe, atomize liquid medicine, then discharge through-hole 6, rethread atomizing wafer 7 further atomizes, atomizing exact liquid medicine will further break up through first filter screen 9, make the medicine atomizing more tiny of granule, great increase crushing degree, make things convenient for patient's inhalation treatment, the comfort has been increased, it can make things convenient for the medicine after the atomizing to carry to reach in inhaling fog cover 12 to be equipped with extraction element in the outlet duct simultaneously, make the patient inhale, thereby realize the process of treatment, fan 15 can further smash atomizing liquid medicine simultaneously, the device simple structure, convenient operation uses, increase the crushing degree of medicine in the atomizing process, make things convenient for patient's inhalation, the comfort has been increased.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The novel efficient liquid medicine atomization shunting device is characterized by comprising a medicine storage cup (1), wherein a conical air inlet pipe (2) is fixedly arranged in the middle of the medicine storage cup (1), one end of the conical air inlet pipe (2) penetrates through the bottom of the medicine storage cup (1), in addition, the conical air inlet pipe extends towards the outside of the medicine storage cup (1) and is communicated with an air inlet hose (3), one end, far away from the conical air inlet pipe (2), of the air inlet hose (3) is connected with a compression air pump (4), one side, far away from the conical air inlet pipe (2), of the conical air inlet pipe (2) is positioned inside the medicine storage cup (1) and is sleeved with a liquid inlet pipe (5), one side of the top of the liquid inlet pipe (5) is provided with a plurality of through holes (6), one end, far away from the conical air inlet pipe (2), of the through holes (6) is provided with an atomization wafer (7), one side, far away from the through holes (6, the top of toper intake pipe (2) is equipped with first filter screen (9), keep away from first filter screen (9) one side of toper intake pipe (2) is equipped with sealed lid (10), top one side of storage medicine cup (1) is equipped with outlet duct (11), outlet duct (11) are kept away from the one end of storing up medicine cup (1) is linked together with inhaling fog cover (12), be equipped with the induced air device on outlet duct (11), the cover is equipped with closing plate (16) on feed liquor pipe (5), be equipped with branch pipe (24) on air inlet hose (3), the one end of branch pipe (24) with it is linked together to store up medicine cup (1), be equipped with the second control valve on branch pipe (24).
2. The novel high-efficiency liquid medicine atomization shunting device is characterized in that a threaded hole is formed in the middle of the sealing plate (16), an external thread is formed in the side wall of the liquid inlet pipe (5), and the threaded hole is matched with the external thread.
3. The novel high-efficiency liquid medicine atomizing and shunting device of claim 2, wherein the air inducing device comprises a placing box (13), two sides of the placing box (13) are communicated with the air outlet pipe (11), a motor (14) is arranged inside the placing box (13), an output end of the motor (14) is provided with a fan (15), the motor (14) and a supporting device are arranged, and one side of the air outlet pipe (11) is provided with a backflow device.
4. The novel efficient liquid medicine atomization and distribution device is characterized in that the supporting device comprises a waterproof box (17), the motor (14) is arranged inside the waterproof box (17), the extending end of the motor (14) is connected with the fan (15) through the waterproof box (17), supporting rods (18) are fixedly arranged on two sides of the waterproof box (17), and the other ends of the supporting rods (18) are fixedly connected with the inner wall of the placing box (13).
5. The novel high-efficiency liquid medicine atomizing and shunting device according to claim 4, wherein the backflow device comprises a backflow pipe (19), one end of the backflow pipe (19) is communicated with the air outlet pipe (11), the other end of the backflow pipe (19) is communicated with the medicine storage cup (1), and a first control valve is arranged on the backflow pipe (19).
6. The novel high-efficiency liquid medicine atomization and distribution device is characterized in that a handle (20) is fixedly arranged on one side of the medicine storage cup (1), and a convex block (21) is arranged on one side of the top of the sealing cover (10).
7. The novel high-efficiency liquid medicine atomization shunting device according to claim 5, characterized in that one end of the conical air inlet pipe (2) is connected with the air inlet hose (3) through a connecting piece.
8. The novel high-efficiency liquid medicine atomizing and shunting device according to claim 6, wherein air outlet holes (22) are formed in both sides of the atomizing mask (12).
9. The novel high-efficiency liquid medicine atomization and distribution device as claimed in claim 7, wherein a second filter (23) is fixedly arranged on one side of the return pipe (19) and positioned on the inner wall of the medicine storage cup (1).
CN201922384743.4U 2019-12-26 2019-12-26 Novel high-efficient liquid medicine atomizing reposition of redundant personnel device Expired - Fee Related CN211536045U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201922384743.4U CN211536045U (en) 2019-12-26 2019-12-26 Novel high-efficient liquid medicine atomizing reposition of redundant personnel device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201922384743.4U CN211536045U (en) 2019-12-26 2019-12-26 Novel high-efficient liquid medicine atomizing reposition of redundant personnel device

Publications (1)

Publication Number Publication Date
CN211536045U true CN211536045U (en) 2020-09-22

Family

ID=72509986

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201922384743.4U Expired - Fee Related CN211536045U (en) 2019-12-26 2019-12-26 Novel high-efficient liquid medicine atomizing reposition of redundant personnel device

Country Status (1)

Country Link
CN (1) CN211536045U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112704578A (en) * 2020-12-31 2021-04-27 西安医学院 Adjustable and controllable atomization inhalation device for small animals
CN112870499A (en) * 2021-01-25 2021-06-01 武汉润锡泽商务咨询有限公司 Air compression formula atomizer is used in paediatrics respiratory disease treatment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112704578A (en) * 2020-12-31 2021-04-27 西安医学院 Adjustable and controllable atomization inhalation device for small animals
CN112870499A (en) * 2021-01-25 2021-06-01 武汉润锡泽商务咨询有限公司 Air compression formula atomizer is used in paediatrics respiratory disease treatment

Similar Documents

Publication Publication Date Title
CN211536045U (en) Novel high-efficient liquid medicine atomizing reposition of redundant personnel device
CN209529841U (en) A kind of multi-purpose vaporizer
CN209332915U (en) A kind of Multi-functional atomization inhalator
CN113694320B (en) Storage tank type multifunctional atomizer
CN103007399B (en) Atomization system of concentrated medicament air supply terminal
CN210750709U (en) Novel atomizer for respiratory medicine
CN208726466U (en) A kind of pediatrician's atomising device
CN215741081U (en) Atomizer for tracheostomy patient
CN217661046U (en) Multi-angle autogenous cutting vibrations atomizing device
CN212395548U (en) Medical ultrasonic atomizer preventing backflow
CN206285320U (en) Family expenses Compressed Air Nebulizer
CN219681384U (en) Novel atomizer
CN214807522U (en) Novel paediatrics nursing atomizer
CN112076375A (en) High-flow respiration humidification tank with atomization function
CN206896577U (en) One kind storage mist cartridge type atomized medicine introducing servicing unit
CN214415385U (en) Connecting pipe convenient to disinfect for atomizer
CN209123095U (en) Medical multifunctional is adjustable atomizing cup
CN209771036U (en) Disposable atomizer
CN215231207U (en) Adjustable atomizing mask for pediatric respiratory therapy
CN219517426U (en) Medicine atomizing inhaler for paediatrics
CN110711299A (en) Breathe atomizing inhalation system for internal medicine
CN219090713U (en) Atomization oxygen generating device
CN110559527A (en) Small automatic control type ultrasonic atomizer used in otolaryngological department
CN202982841U (en) Atomizing system for medical centralized air supply terminal
CN213609037U (en) Medical liquid medicine atomizing device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200922

Termination date: 20211226

CF01 Termination of patent right due to non-payment of annual fee