Mounting structure for reducing noise of fan of breathing machine

Abstract

The utility model belongs to the technical field of medical equipment, and particularly discloses a mounting structure for reducing noise of a fan of a breathing machine, which comprises a fan, a shell and a fan seat, a mounting groove is arranged at the bottom of the shell, and a first air guide groove matched with the fan is arranged on the side edge of the shell; the fan is mounted in the fan seat, and the fan seat is mounted in the mounting groove through a buffer part; a sound absorption cover is fixedly connected to the inner wall of the periphery of the fan base. When the breathing machine works, noise caused by airflow or vibration of the fan is reduced, the comfort level of a user is improved, and meanwhile, the shell outer cover and the detachable filter screen cover body are arranged, so that the filter screen is convenient to replace.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and particularly relates to an installation structure for reducing the noise of a ventilator fan. Background Technique

[0002] In modern clinical medicine, as an effective means to artificially replace the function of autonomous ventilation, ventilators have been widely used in respiratory failure caused by various reasons, anesthesia respiratory management during major surgeries, respiratory support treatment, and first aid resuscitation, and play a very important role in the field of modern medicine. A ventilator is a crucial medical device that can prevent and treat respiratory failure, reduce complications, and save and extend the lives of patients.

[0003] One of the core components of a ventilator is the main control circuit assembly board and the power supply assembly board. During operation, electronic components will generate heat. If not dissipated in time, it will affect the normal operation of the ventilator. Therefore, fans are often installed in the ventilator for heat dissipation. In the prior art, the fan is directly installed in the ventilator, and the airflow generated by the fan's inhalation and exhaust, as well as the vibration of the fan during operation hitting the ventilator housing, will generate noise. Ventilators are generally placed beside the user during use. Especially at night, when the environment is relatively quiet, the noise will affect the user's sleep quality. Content of the Utility Model

[0004] The purpose of the utility model is to provide an installation structure for reducing the noise of a ventilator fan, reduce the noise caused by the airflow or vibration of the fan during the operation of the ventilator, and improve the comfort of the user.

[0005] The purpose of the utility model is achieved through the following technical solutions. An installation structure for reducing the noise of a ventilator fan includes:

[0006] A fan;

[0007] A housing with an installation groove at the bottom and a first air guide groove matching the fan on the side of the housing; and

[0008] A fan seat, the fan is installed in the fan seat, and the fan seat is installed in the installation groove through a buffer; sound-absorbing covers are fixedly connected to the inner walls around the fan seat.

[0009] Preferably, a plurality of reinforcing ribs are provided at the bottom of the installation groove, the buffer is installed between each adjacent pair of reinforcing ribs, and the height of the buffer is greater than the thickness of the reinforcing ribs.

[0010] Preferably, the buffer includes a spring metal and a rubber layer, and the rubber layer is coated on the outside of the spring metal.

[0011] Preferably, it further includes a filter screen, and the filter screen is arranged outside the first air guide groove.

[0012] Preferably, a groove matching with the filter screen is provided on the outer side of the housing, and the filter screen is installed in the groove.

[0013] Preferably, it further includes an outer cover of the housing, and the outer cover of the housing is covered and installed on the outer side of the housing; the outer cover of the housing is provided with a ventilation opening matching with the first air guide groove; the outer cover of the housing is provided with a filter screen cover body matching with the ventilation opening, the filter screen cover body is detachably installed on the outer cover of the housing, and the filter screen cover body is provided with a second air guide groove.

[0014] Preferably, a sound-absorbing pad is arranged on the opposite surface of the air outlet of the fan on the housing.

[0015] Due to the adoption of the above technical solutions, the utility model has the following advantages:

[0016] For an installation structure for reducing the noise of the ventilator fan of the utility model, a first air guide groove matching with the fan is arranged on the side of the housing, so that the gas enters the fan in a certain order, avoiding the generation of turbulent flow of the air flow and reducing the fan noise caused by the air flow. The fan is installed in the fan seat, and the fan seat is installed in the installation groove through a buffer member, avoiding the direct installation of the fan on the housing. The inner wall of the fan seat is provided with a sound-absorbing cover. Not only will the vibration of the fan not collide with the fan seat to generate noise during operation, but also a part of the noise generated by the fan during operation is first absorbed by the sound-absorbing cover, reducing the fan noise and improving the comfort of the user. Description of the Drawings

[0017] In order to more clearly illustrate the specific embodiments of the utility model, the drawings required for use in the specific embodiments will be briefly introduced below. In all the drawings, the components or parts do not necessarily draw according to the actual proportion.

[0018] Figure 1 It is a schematic structural diagram of an installation structure for reducing the noise of the ventilator fan of the utility model;

[0019] Figure 2 It is a schematic structural diagram of the fan seat;

[0020] Figure 3 It is a schematic structural diagram of the combination of the fan and the fan seat;

[0021] Figure 4 It is a schematic structural diagram of the housing;

[0022] Figure 5 It is an enlarged schematic diagram at A;

[0023] Figure 6 It is a schematic diagram of the buffer pad.

[0024] Reference Signs:

[0025] 1 - Fan, 11 - Air outlet,

[0026] 2 - Housing, 21 - Installation groove, 22 - First air guide groove, 23 - Reinforcing rib, 24 - Groove, 25 - Sound absorption pad,

[0027] 3 - Fan seat, 31 - Buffer member, 311 - Spring metal, 312 - Rubber layer, 32 - Sound absorption cover, 33 - Threaded hole column, 34 - Installation ear, 35 - Through cavity, 36 - Positioning portion, 37 - First screw,

[0028] 4 - Filter screen, 5 - Outer cover of the housing, 51 - Vent, 52 - Filter screen cover body, 521 - Second air guide groove. Specific implementation mode

[0029] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , an installation structure for reducing the noise of the ventilator fan, comprising: fan 1, housing 2 and fan seat 3.

[0030] The bottom of the housing 2 is provided with an installation groove 21, and the side of the housing 2 is provided with a first air guide groove 22 that cooperates with the fan 1; the fan 1 is installed in the fan seat 3, and the fan seat 3 is installed in the installation groove 21 through the buffer member 31; the inner walls around the fan seat 3 are fixedly connected with a sound absorption cover 32. Specifically, the size of the installation groove 21 is larger than the size of the fan seat 3, the notch of the first air guide groove 22 communicates with the installation groove 21, the first air guide groove 22 adopts the existing technology, and a plurality of parallel through-notch openings are provided. When the fan 1 works, the air enters the fan 1 in an orderly manner from the through-notch openings. Installation ears 34 are symmetrically arranged on both sides of the fan seat 3, and the fan seat 3 is fixedly installed on the inner wall of the installation groove 21 through bolts. The fan seat 3 axially has a through cavity 35, the fan 1 is installed in the through cavity 35, and positioning portions 36 extending towards the axis are provided at the four corners of the outer frame surface on one side of the fan seat 3. The positioning portions 36 are provided with threaded hole columns 33 for installing the fan 1, and the fan 1 is fixedly installed in the fan seat 3 through the first screw 37, and four sides and one end face of the fan 1 are partially covered by the fan seat 3.

[0031] An installation structure for reducing the noise of the ventilator fan of the present utility model. A first air guiding groove 22 matching with the fan 1 is arranged on the side of the shell 2, so that gas enters the fan 1 in a certain order, avoiding the generation of air flow turbulence and reducing the noise of the fan 1 caused by the air flow. The fan 1 is installed in the fan seat 3, and the fan seat 3 is installed in a separately provided installation groove 21 through a buffer member 31. A sound absorption cover 32 is arranged on the inner wall of the fan seat 3, avoiding the direct installation of the fan 1 on the fan seat 3. Not only the vibration of the fan 1 and the collision with the fan seat 3 during operation are reduced to generate noise, but also a part of the noise generated by the fan 1 during operation is first absorbed by the sound absorption cover 32, reducing the noise of the fan 1 and improving the comfort of the user. During production, the fan 1 is installed on the fan seat 3, which is convenient for checking whether the installation of the fan 1 is in place before installing it in the ventilator, replacing the conventional installation of the fan 1 in the ventilator, where it is difficult to check the installation state of the fan 1 due to the narrow space; good installation is beneficial to the long-term working stability of the fan 1 and reduces the noise caused by poor installation of the fan 1.

[0032] Please refer to Figure 5 , further, a plurality of reinforcing ribs 23 are arranged at the bottom of the installation groove 21, and the buffer member 31 is installed between every two adjacent reinforcing ribs 23, and the height of the buffer member 31 is greater than the thickness of the reinforcing rib 23. Specifically, the reinforcing ribs 23 divide the bottom of the installation groove 21 into a plurality of regions, and one buffer member 31 is installed in each region. With this structure, the buffer member 31 is pre-positioned during installation, which is convenient for installation, and the buffer member 31 is prevented from moving left and right under the action of external force, ensuring the stability of the fan seat 3 after being installed on the buffer member 31.

[0033] Please refer to Figure 6 , further, the buffer member 31 includes a spring metal 311 and a rubber layer 312, and the rubber layer 312 is coated on the outer side of the spring metal 311. The spring metal 311 adopts the existing technology and is made into a coaxial spring shape with a metal thin tube, having good metal strength, and its compression resilience is better than that of a single rubber layer. Preferably, the metal used is stainless steel.

[0034] Please refer to Figure 1 and Figure 5 , further, after the ventilator runs for a long time, the noise of the fan 1 will gradually increase because external dust accumulates in the fan 1. In order to reduce the dust entering the fan 1, a filter net 4 is also included, and the filter net 4 is arranged outside the first air guiding groove 22. Specifically, a groove 24 matching with the filter net 4 is arranged on the outer side of the shell 2, and the filter net 4 is installed in the groove 24. The groove 24 plays a role of limiting and marking when installing the filter net 4, which is convenient for quickly installing the filter net 4 after positioning, and the filter net 4 will not be exposed outside the shell 2 after installation.

[0035] Please refer to Figure 1, Further, it further includes a housing outer cover 5, and the housing outer cover 5 is covered and installed on the outside of the housing 2; the housing outer cover 5 is provided with a ventilation opening 51 that matches the first air guide groove 22; the housing outer cover 5 is provided with a filter screen cover body 52, and the filter screen cover body 52 is detachably installed on the ventilation opening 51, and the filter screen cover body 52 is provided with a second air guide groove 521. Specifically, the structure of the housing outer cover 5 matches that of the housing 2. The filter screen cover body 52 is provided with two first assembly holes, the housing outer cover 5 is provided with corresponding second assembly holes, and the housing 2 is provided with matching third assembly holes. The second screw passes through the first assembly hole, the second assembly hole and the third assembly hole to fix the filter screen cover body 52 on the housing outer cover 5. When the filter screen 4 needs to be replaced, use a tool to remove the second screw hole, remove the filter screen 4 after removing the filter screen cover body 52, so as to facilitate replacement and avoid the need to remove multiple components to remove the filter screen 4 in a conventional ventilator.

[0036] Please refer to Figure 4 and Figure 5 , Further, a plurality of sound-absorbing pads 25 are arranged on the opposite surface of the air outlet 11 of the fan 1 on the side of the housing 2. Specifically, the sound-absorbing pads 25 are attached to the inner wall surface opposite to the fan 1 in the installation groove 21. The housing 2 is provided with a step at the air outlet of the fan 1, and another sound-absorbing pad 25 is provided at the end face close to the fan 1. With this structure, during operation, using the principle of air flow, the fan 1 sucks the outside air into the fan 1 through the first air guide groove 22. After being accelerated and turned by the fan 1, the cold air is discharged into the housing. The sound-absorbing pad 25 first buffers and absorbs the air flow, reducing the stress on other components of the ventilator, thereby reducing the noise generated by the impact of the air flow on other components.

[0037] An installation structure for reducing the noise of the ventilator fan of the present utility model. The side of the housing 2 is provided with a first air guide groove 22 of the fan 1, so that the gas enters the fan 1 in a certain order, avoiding the generation of air flow turbulence and reducing the noise of the fan 1 caused by the air flow. The fan base 3 is installed in the installation groove 21 through a buffer member 31, avoiding the direct installation of the fan 1 on the housing 2, reducing the noise generated by the collision between the fan 1 and the housing 2 due to vibration during operation. A sound-absorbing cover 32 is provided on the fan base 3, and a plurality of sound-absorbing pads 25 are provided at the air outlet 11, reducing the noise of the fan 1 and improving the comfort of the user. A filter screen 4 is provided in the first air guide groove 22 of the housing 2 to reduce the noise generated by dust entering the fan 1, and a housing outer cover 5 and a detachable filter screen cover body 52 are provided to facilitate the replacement of the filter screen 4.

[0038] The above-mentioned specific implementation manners have further elaborated in detail the purpose, technical solutions and beneficial effects of the present utility model. It should be understood that the above is only the specific implementation method of the present utility model, and is not used to limit the present utility model. Any modifications, equivalent replacements and improvements made within the gist of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An installation structure for reducing the noise of a ventilator fan, characterized in that, Comprising: A fan (1); A housing (2) with an installation groove (21) provided at the bottom, and a first air guide groove (22) matching the fan (1) provided at the side of the housing (2); and A fan base (3), the fan (1) is installed in the fan base (3), and the fan base (3) is installed in the installation groove (21) through a buffer member (31); sound-absorbing covers (32) are fixedly connected to the inner walls around the fan base (3).

2. The installation structure for reducing the noise of the ventilator fan according to claim 1, characterized in that A plurality of reinforcing ribs (23) are provided at the bottom of the installation groove (21), the buffer member (31) is installed between every two adjacent reinforcing ribs (23), and the height of the buffer member (31) is greater than the thickness of the reinforcing ribs (23).

3. The installation structure for reducing the noise of the ventilator fan according to claim 1 or 2, characterized in that, The buffer member (31) includes a spring metal (311) and a rubber layer (312), and the rubber layer (312) covers the outside of the spring metal (311).

4. The installation structure for reducing the noise of the ventilator fan according to claim 1 or 2, characterized in that, It further includes a filter net (4), and the filter net (4) is arranged outside the first air guide groove (22).

5. The installation structure for reducing the noise of the ventilator fan according to claim 4, characterized in that, A groove (24) matching the filter net (4) is provided on the outside of the housing (2), and the filter net (4) is installed in the groove (24).

6. The installation structure for reducing the noise of the ventilator fan according to claim 5, characterized in that, It further includes a housing outer cover (5), and the housing outer cover (5) is covered and installed on the outside of the housing (2); the housing outer cover (5) is provided with a ventilation opening (51) matching the first air guide groove (22); the housing outer cover (5) is provided with a filter net cover body (52) matching the ventilation opening (51), the filter net cover body (52) is detachably installed on the housing outer cover (5), and the filter net cover body (52) is provided with a second air guide groove (521).

7. The installation structure for reducing the noise of the ventilator fan according to claim 4, characterized in that, It further includes a housing outer cover (5), and the housing outer cover (5) is covered and installed on the outside of the housing (2); the housing outer cover (5) is provided with a ventilation opening (51) matching the first air guide groove (22); the housing outer cover (5) is provided with a filter net cover body (52) matching the ventilation opening (51), the filter net cover body (52) is detachably installed on the housing outer cover (5), and the filter net cover body (52) is provided with a second air guide groove (521).

8. The installation structure for reducing the noise of a ventilator fan according to claim 1, 2, 5, 6 or 7, characterized in that, A sound-absorbing pad (25) is arranged on the opposite surface of the exhaust port (11) of the fan (1) of the housing (2).

Images