CN217311675U

CN217311675U - Low-resistance composite respiratory tract filter

Info

Publication number: CN217311675U
Application number: CN202221184559.0U
Authority: CN
Inventors: 吴玉平; 罗绵成
Original assignee: EXCELLENTCARE MEDICAL (HUIZHOU) Ltd
Current assignee: EXCELLENTCARE MEDICAL (HUIZHOU) Ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-08-30
Anticipated expiration: 2032-05-18

Abstract

The utility model relates to a low resistance composite respiratory tract filter, including fusiform casing, the inside of fusiform casing has the cavity, cavity and external intercommunication, install round hoop cover, warm and humid cotton and cross the filter pulp in the cavity, round hoop cover is fixed in the cavity, warm and humid cotton install in round hoop cover, it is fixed in to cross the filter pulp the cavity, cross the filter pulp with the clearance has between the warm and humid cotton, cross the filter pulp with form the gas flow space between the inner wall of fusiform casing. The utility model discloses be provided with warm and humid cotton and cross the filter pulp in spindle-shaped casing, can satisfy the filtering rate to bacterium and virus, guarantee to the gaseous moist of conveyer and the effect of heating, and can keep the resistance of utmost point low, give the comprehensive care of patient, comfortable breathing for patient's recovery.

Description

Low-resistance composite respiratory tract filter

Technical Field

The utility model relates to a filter field especially relates to a compound respiratory track filter of low resistance.

Background

The nose is a portal of the respiratory tract, which can perform certain defense against dust, foreign matters and the like, and can rapidly moisten and heat inhaled gas. It is an important basis for ensuring respiratory tract and human health, and is an important nonspecific defense system for human respiratory tract. However, the patients who receive the mechanical ventilation therapy lose the protection mechanism of normal people and need to use the breathing filter for assistance because the functions of the upper respiratory tract are removed and the functions of the nasal cavity for heat preservation and foreign matter filtration are also removed.

The filtering rate of the breathing filter to bacteria and viruses is stronger than the defense capability of the KN95 medical protective mask, and the work is more prominent particularly in the large environment of new crown epidemic situations. When a new coronary patient or a person in close contact receives respiratory tract treatment such as oxygen inhalation, a respiratory filter is required to be arranged; not only protects the medical environment and medical staff, but also prevents cross infection among patients. However, filters on the market have a large resistance, and for patients who are completely unconscious, the patient may not feel well if the patient is forced to inhale by a ventilator. However, for patients with respiratory consciousness, when a filter or even a compound filter is added in a breathing pipeline, the resistance of inhalation and exhalation of the patients is obviously increased, the breathing difficulty of the patients is increased, the breathing burden of the patients is increased, and the recovery of the airways of the patients is not facilitated.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a low resistance composite respiratory tract filter to solve the above technical problems.

The purpose of the utility model is realized through the following technical scheme:

a low-drag composite respiratory tract filter comprising: the fusiform casing, the inside of fusiform casing has the cavity, cavity and external intercommunication, install round hoop cover, warm and humid cotton and filter pulp in the cavity, round hoop cover is fixed in the cavity, warm and humid cotton install in round hoop cover, filter pulp is fixed in the cavity, filter pulp with the clearance has between the warm and humid cotton, filter pulp with form the gas flow space between the inner wall of fusiform casing.

Above-mentioned filter has adopted the casing of fusiform, be provided with warm and humid cotton and filter pulp in fusiform casing, and warm and humid cotton and filter pulp between have the clearance, make the air current can not cause the resistance stack when passing through, greatly reduced the air current resistance, still be formed with the gas flow space between filter pulp and the fusiform casing, the filtration lifting surface area of filter pulp has been increased, the air resistance has been reduced, warm and humid cotton and filter pulp's setting can satisfy the filtering rate to bacterium and virus simultaneously, the guarantee is to the gaseous moist of conveyer and the effect of heating, and can keep extremely low resistance, give the comprehensive care of patient, comfortable breathing, accelerate patient's recovery.

Further, spindle-shaped casing includes casing and lower casing, go up the casing and can dismantle the connection with lower casing, the circle hoop cover is fixed in go up the casing, the filter pulp is fixed in lower casing.

Can dismantle the last casing that sets up and make things convenient for the equipment of filter down, go up casing and lower casing accessible joint or threaded connection's mode fixed, go up the inside space of casing and lower casing and all be the cone form structure, the two forms the cavity of a fusiform after combining, and warm and humid cotton and filter pulp can hang in the intermediate position of cavity to make filter pulp's area maximize, increase its filtration atress area, reduce the air resistance.

Furthermore, the circular hoop cover comprises an annular frame, a support frame fixed on the annular frame and an installation block, the warm and humid cotton is placed on the support frame, and the installation block is inserted in the upper shell.

The ring frame and the support frame jointly form a placing position for installing and fixing warm and wet cotton, the ring frame is fixed on the lower shell and the upper shell through the installing block to form firm connection, and the warm and wet cotton is prevented from walking away to influence the wetting and heating functions under the blowing of atmospheric flow.

Furthermore, the mounting blocks are multiple, clamping grooves are formed in the mounting blocks, and clamping blocks matched with the clamping grooves are arranged on the upper shell.

The installation piece is fixed in on the annular frame, and the bottom of casing that makes progress extends, and the bottom of going up the casing simultaneously is provided with the fixture block fixed with the installation piece cooperation, and draw-in groove on the installation piece can insert and establish on the fixture block to realize the fixed connection of circle hoop cover, this structure has also made things convenient for the equipment of circle hoop cover simultaneously and has dismantled.

Further, the lower shell is provided with a plurality of connecting blocks, and the connecting blocks are used for fixing the filter cotton.

Connecting block and the filter pulp phase-match on the casing down, a plurality of connecting block evenly distributed for fixed filter pulp's edge will cross the filter pulp and hang in the cotton top of warm and humid, make warm and humid cotton and cross and form the clearance between the filter pulp, the air current can not cause the resistance stack when passing through, in order to reduce the air current resistance.

Furthermore, the filter cotton and the inner wall of the lower shell form a conical space, and the depth of the conical space is 5-8 mm.

The structure arrangement enables the airflow resistance to form the maximum steep slope proportion in the occupied space, the resistance is extremely small, and the occupied space is small.

Further, go up the casing and be equipped with the outlet duct with inside intercommunication, the casing is equipped with the intake pipe with inside intercommunication down.

The air outlet pipe and the air inlet pipe are respectively used for being communicated with external equipment, so that the air can accurately pass through the filter cotton and the greenhouse cotton in the cavity and enter the body of a patient.

Furthermore, the outlet duct includes outer layer pipe and inlayer pipe, the inside wall of outer layer pipe with there is the joint clearance between the lateral wall of inlayer pipe.

The connection clearance between the inner layer pipe and the outer layer pipe is convenient for being connected with external equipment, and the stability of being connected with the external equipment can be effectively improved.

Furthermore, the warm and humid cotton is heat preservation sponge or heat preservation vortex type crepe paper.

The utility model discloses compare in prior art's beneficial effect and be:

the utility model discloses be provided with warm and humid cotton and filter pulp in spindle-shaped casing, and warm and humid cotton and filter pulp between have the clearance, can not cause the resistance stack when making the air current pass through, greatly reduced the air resistance, still be formed with the gas flow space between filter pulp and the spindle-shaped casing, the filtration lifting surface area who filters pulp has been increased, the gas resistance has been reduced, simultaneously warm and humid cotton and filter pulp's setting can satisfy the filtering rate to bacterium and virus, the guarantee is to the gaseous moist and effect of heating of conveyer, and can keep the extremely low resistance, give the comprehensive care of patient, comfortable breathing, accelerate patient's recovery.

Drawings

Fig. 1 is an exploded view of an embodiment of the present invention.

Fig. 2 is a schematic structural view of the upper housing and the circular hoop cover according to the embodiment of the present invention.

Fig. 3 is an external schematic view of the upper housing according to the embodiment of the present invention.

Fig. 4 is an internal schematic view of the housing according to the embodiment of the present invention.

Reference numerals: 1-a spindle-shaped housing; 11-an upper housing; 111-outer tube; 112-inner tube; 113-a fixture block; 12-a lower housing; 121-an air inlet pipe; 122-connecting block; 2-a circular hoop cover; 21-an annular frame; 22-a support frame; 23-a mounting block; 231-card slot; 3-warm and wet cotton; 4-filtering cotton.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are illustrated in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1-4, a preferred embodiment of the present invention is as follows.

Referring to fig. 1, a low resistance composite respiratory tract filter comprises: the air conditioner comprises a spindle-shaped shell 1, wherein a cavity is formed in the spindle-shaped shell 1 and is communicated with the outside, a round hoop cover 2, warm and humid cotton 3 and filter cotton 4 are installed in the cavity, the round hoop cover 2 is fixed to the cavity, the warm and humid cotton 3 is installed on the round hoop cover 2, the filter cotton 4 is fixed to the cavity, a gap is formed between the filter cotton 4 and the warm and humid cotton 3, and an air flowing space is formed between the filter cotton 4 and the inner wall of the spindle-shaped shell 1.

This embodiment has adopted the casing of fusiform, be provided with warm and humid cotton 3 and filter pulp 4 in fusiform casing 1, and have the clearance between warm and humid cotton 3 and the filter pulp 4, make the air current can not cause the resistance stack when passing through, greatly reduced the air current resistance, still be formed with the gas flow space between filter pulp 4 and the fusiform casing 1, the filtration lifting surface area of filter pulp 4 has been increased, the gas resistance has been reduced, simultaneously warm and humid cotton 3 and filter pulp 4's setting can satisfy the filtering rate to bacterium and virus, the guarantee is to the gaseous moist and effect of heating of conveyer, and can keep extremely low resistance, give the comprehensive care of patient, comfortable breathing, accelerate patient's recovery.

Tests show that the resistance of the filter of the embodiment is lower than 50Pa under the air flow of 30L/min, and the resistance of the compound filter on the market is generally higher than 300Pa under the same conditions, so that the filter of the embodiment has obvious improvement. And the filters with the resistance lower than 100Pa in the market, such as a double-layer heat preservation filter of Fisher-Tropsch and a low-resistance filter of Entesseik, have the filtering function but have no functions of moisture preservation and heating.

In this embodiment, the spindle-shaped housing 1 includes an upper housing 11 and a lower housing 12, the upper housing 11 and the lower housing 12 are detachably connected, the circular hoop cover 2 is fixed to the upper housing 11, and the filter cotton 4 is fixed to the lower housing 12.

Can dismantle the equipment that the last casing 11 and the lower casing 12 that set up can make things convenient for the filter, go up casing 11 and lower casing 12 accessible joint or threaded connection's mode and fix, the inside space of going up casing 11 and lower casing 12 all is the cone form structure, the cavity of formation spindle shape after the two combination, warm and humid cotton 3 and filter pulp 4 can hang in the intermediate position of cavity, so that filter pulp 4's area maximize, increase its filtration atress area, reduce the air resistance.

Referring to fig. 2, in the present embodiment, the circular hoop cover 2 includes a ring frame 21, a support frame 22 fixed on the ring frame 21, and a mounting block 23, the wet and warm cotton 3 is placed on the support frame 22, and the mounting block 23 is inserted into the upper housing 11.

The annular frame 21 and the support frame 22 jointly form a placing position for installing and fixing the warm and humid cotton 3, the annular frame 21 is fixed on the upper shell 11 through the installation block 23 to form firm connection, and the warm and humid cotton 3 is prevented from moving away to affect the wetting and heating functions under the blowing of atmospheric flow. Specifically, support frame 22 is a plurality of L type support bodies, and the one end of a plurality of L type support bodies is fixed on annular frame 21, and the other end then links together to form a bracket in order to be used for placing warm and humid cotton 3, when can guaranteeing the firm installation of warm and humid cotton 3, can minimize to block warm and humid cotton 3, improve it and heat and keep wet area

In this embodiment, there are a plurality of mounting blocks 23, a slot 231 is disposed on the mounting block 23, and the upper housing 11 is disposed with a latch 113 matching with the slot 231. Specifically, the fixture block 113 is a T-shaped structure, and the number of the mounting blocks 23 and the number of the fixture blocks 113 are three.

The mounting block 23 is fixed on the annular frame 21, extends to the bottom of the upper shell 11, and the bottom of the upper shell 11 is provided with a fixture block 113 fixed in cooperation with the mounting block 23, and the clamping groove 231 on the mounting block 23 can be inserted on the fixture block 113, so that the circular hoop cover 2 is fixedly connected, and the circular hoop cover 2 is convenient to assemble and disassemble due to the structure.

Referring to fig. 4, in the present embodiment, the lower housing 12 is provided with a plurality of connecting blocks 122, and the plurality of connecting blocks 122 are used for fixing the filter cotton 4. Connecting block 122 and the filter pulp 4 phase-match on the casing 12 down, a plurality of connecting block 122 evenly distributed for the edge of fixed filter pulp 4 hangs filter pulp 4 in the top of warm and humid cotton 3, makes to form the clearance between warm and humid cotton 3 and the filter pulp 4, and the air current can not cause the resistance stack when passing through, in order to reduce the air current resistance.

In this embodiment, the filter cotton 4 and the inner wall of the lower housing 12 form a conical space, and the depth of the conical space is 5-8 mm. The test shows that the upper space and the lower space of the cone shape are increased to 5-8mm, so that the air flow resistance forms the maximum steep slope proportion in the occupied space, the resistance is extremely small, and the occupied space is small.

Referring to fig. 1 and 2, in the present embodiment, the upper housing 11 is provided with an air outlet pipe communicated with the inside, and the lower housing 12 is provided with an air inlet pipe 121 communicated with the inside. The air outlet pipe and the air inlet pipe 121 are respectively used for being communicated with external equipment, so that the air can accurately pass through the filter cotton 4 and the greenhouse cotton in the cavity and enter the body of a patient.

The air outlet pipe comprises an outer layer pipe 111 and an inner layer pipe 112, and a connecting gap is formed between the inner side wall of the outer layer pipe 111 and the outer side wall of the inner layer pipe 112. The connection gap between the inner layer tube 112 and the outer layer tube 111 is convenient for connection with external equipment, and can effectively improve the stability of connection with the external equipment.

In this embodiment, the temperature and humidity cotton 3 is heat preservation sponge or heat preservation vortex-type crepe paper. When in use, the method can be flexibly selected according to the actual situation.

In the description of the present invention, it is to be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims

1. A low resistance composite respiratory tract filter comprising: the spindle-shaped shell is provided with a cavity inside, the cavity is communicated with the outside, a round hoop cover, warm and wet cotton and filter cotton are installed in the cavity, the round hoop cover is fixed on the cavity, the warm and wet cotton is installed on the round hoop cover, the filter cotton is fixed on the cavity, a gap is formed between the filter cotton and the warm and wet cotton, and a gas flowing space is formed between the filter cotton and the inner wall of the spindle-shaped shell.

2. The low resistance composite respiratory tract filter according to claim 1 wherein the spindle-shaped casing comprises an upper casing and a lower casing, the upper casing and the lower casing are detachably connected, the circular hoop cover is fixed on the upper casing, and the filter cotton is fixed on the lower casing.

3. The low resistance composite respiratory tract filter according to claim 2 wherein the circular hoop cover comprises an annular frame, a support frame fixed on the annular frame and a mounting block, the warm and humid cotton is placed on the support frame, the mounting block is inserted in the upper housing.

4. The low resistance composite respiratory tract filter according to claim 3 wherein the number of the mounting blocks is plural, the mounting blocks are provided with clamping grooves, and the upper shell is provided with clamping blocks matched with the clamping grooves.

5. A low resistance composite respiratory tract filter according to claim 2 wherein the lower housing is provided with a plurality of connecting blocks for securing the filter cotton.

6. The low-resistance composite respiratory tract filter according to claim 5, wherein the filter cotton and the inner wall of the lower shell form a cone-shaped space, and the depth of the cone-shaped space is 5-8 mm.

7. A low resistance composite respiratory tract filter according to claim 2 wherein the upper housing is provided with an outlet tube communicating with the interior and the lower housing is provided with an inlet tube communicating with the interior.

8. The low resistance composite respiratory tract filter of claim 7 wherein the outlet pipe comprises an outer pipe and an inner pipe, and a connecting gap is provided between the inner side wall of the outer pipe and the outer side wall of the inner pipe.

9. The low-resistance composite respiratory tract filter according to any one of claims 1-8, wherein the warm and wet cotton is heat-insulating sponge or heat-insulating vortex-type crepe paper.