Noise-reducing medical compression pump

Abstract

This utility model discloses a noise-reducing medical compressor pump, including a pump body and an air passage box disposed on and connected to the pump body. The air passage box has an air inlet and an air outlet. The air passage box contains multiple sequentially connected silencing chambers and an air outlet chamber connected to the air outlet. The initial silencing chamber is connected to the air inlet; the final silencing chamber is connected to the air outlet chamber. The air passage box also includes an airflow buffer chamber connected to the air outlet chamber. Through the airflow buffer chamber, when the airflow in the air outlet chamber is too large or excessive, some of the airflow will enter the airflow buffer chamber for buffering and buffering, effectively preventing excessive airflow from the air outlet chamber from generating air noise. This significantly reduces the overall product noise and improves the consumer experience.

Description

Technical Field

[0001] This utility model relates to the field of compression pumps, and in particular to a noise-reducing medical compression pump. Background Technology

[0002] The medical compressor pump is the core component of a medical nebulizer. It is mainly used to compress fluids such as air and discharge the compressed fluid, and its applications are extremely wide.

[0003] Existing medical compressor pumps generally include a pump body and an air passage box. The air passage box is mainly used for air exchange and noise reduction. In traditional air passage boxes, the air outlet position (air outlet chamber) is where the airflow converges, causing excessive airflow at that position. As a result, when the airflow at the air outlet position is discharged from the air outlet (airflow compression), it will generate a large amount of air noise. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a noise-reducing medical compressor pump that solves the problem of excessive air noise.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a noise-reducing medical compressor pump, comprising a pump body and an air passage box disposed on the pump body and communicating with the pump body. The air passage box is provided with an air inlet and an air outlet. The air passage box is provided with multiple silencer chambers connected in sequence and an air outlet chamber connected to the air outlet. The silencer chamber at the beginning is connected to the air inlet; the silencer chamber at the end is connected to the air outlet chamber; and the air passage box is also provided with an airflow buffer chamber connected to the air outlet chamber.

[0006] In one embodiment, the air passage box includes an upper cover and a lower cover that is closed and installed with the upper cover, and the upper cover and the lower cover are separated by an air-insulating membrane; the air inlet, the air outlet and the air outlet chamber are all located on the upper cover; the upper cover is provided with multiple upper silencer chambers; The airflow buffer chamber is located on the lower cover and is directly opposite the air outlet chamber. The airflow buffer chamber and the air outlet chamber are connected through a first airflow hole on the air-insulating membrane. The lower cover is provided with multiple lower silencers, and the multiple lower silencers are connected to the multiple upper silencers through a second airflow hole on the air-insulating membrane.

[0007] In one embodiment, the air outlet chamber is located in the middle of the upper cover, and multiple upper silencers surround the air outlet chamber; correspondingly, the airflow buffer chamber is located in the middle of the lower cover, and multiple lower silencers surround the airflow buffer chamber.

[0008] In one embodiment, the plurality of upper silencing chambers include a first upper silencing chamber, a second upper silencing chamber, a third upper silencing chamber, and a fourth upper silencing chamber, wherein the first upper silencing chamber, the second upper silencing chamber, and the third upper silencing chamber are connected in sequence. The plurality of lower mufflers include a first lower muffler, a second lower muffler, a third lower muffler, and a fourth lower muffler that are connected in sequence. The first lower muffler is connected to the third upper muffler through a second airflow hole on the left side. The fourth lower muffler is connected to the fourth upper muffler through a second airflow hole on the right side. The fourth upper muffler is connected to the cylinder section of the pump body through a first air exchange hole. The cylinder section is connected to the air outlet chamber through a second air exchange hole.

[0009] In one embodiment, two adjacent upper silencing chambers that are connected to each other are connected by a first vent, which has a top opening and a rectangular cross-sectional area.

[0010] In one embodiment, two adjacent lower silencer chambers that are connected to each other are connected by a second vent, which has a top opening and a rectangular cross-sectional area.

[0011] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution: By setting up an airflow buffer chamber, when the airflow in the air outlet chamber is too large or sufficient, some of the airflow will enter the airflow buffer chamber for buffering and caching, effectively preventing excessive airflow from the air outlet chamber from generating air noise. The overall product noise is greatly reduced, improving the consumer experience.

[0012] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0013] Figure 1 This is a perspective view of the compression pump according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the gas passage box according to an embodiment of this utility model; Figure 3 This is an exploded view of the gas passage box according to an embodiment of this utility model.

[0014] Figure label: 1. Pump body 2. Air passage box 3. Air inlet 4. Air outlet 5. Silencer chamber 6. Vent chamber 7. Airflow buffer chamber; 11. Cylinder section 21. Top cover 22. Bottom cover 23. Air barrier membrane; 231. First airflow hole 232, Second airflow hole; 2321, Left side second airflow hole 2322, Second airflow hole on the right side 51. Upper Silencing Chamber 511. First Upper Silencing Chamber 512. Second upper silencing chamber; 513. Third upper silencing chamber 514. Fourth upper silencing chamber; 52. Lower silencing chamber 521. First silencer chamber 522. Second silencer chamber 523. Third lower silencer compartment 524. Fourth lower silencer compartment 501, First ventilation port; 502, Second ventilation port 503, First air vent; 504, Second air vent. Detailed Implementation

[0015] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0016] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0017] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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 this application, "multiple" means two or more, unless otherwise explicitly specified.

[0019] Please see Figures 1 to 3As shown, this application provides a noise-reducing medical compressor pump, including a pump body 1 and an air passage box 2 disposed on and connected to the pump body 1. The air passage box 2 is provided with an air inlet 3 and an air outlet 4. The air passage box 2 is provided with a plurality of silencers 5 connected in sequence and an air outlet 6 connected to the air outlet 4. The silencer 5 at the beginning is connected to the air inlet 3; the silencer 5 at the end is connected to the air outlet 6; wherein, the air passage box 2 is also provided with an airflow buffer chamber 7 connected to the air outlet 6.

[0020] By setting up an airflow buffer chamber, when the airflow in the air outlet chamber 6 is too large or too sufficient, some of the airflow will enter the airflow buffer chamber for buffering and caching, effectively preventing excessive airflow from the air outlet chamber 6 from generating air noise when it is discharged from the air outlet. The overall product noise is greatly reduced, improving the consumer experience.

[0021] For example, the pump body 1 includes a motor drive assembly, a piston rod assembly, and a cylinder section, etc. The structure of the pump body 1 is prior art and will not be described in detail here.

[0022] For example, the air inlet 3 and the air outlet 4 are air pipe connectors for connecting air pipes.

[0023] In one embodiment of this application, the air passage box 2 includes an upper cover 21 and a lower cover 22 that is closed and installed with the upper cover 21. The upper cover 21 and the lower cover 22 are separated by an air-insulating membrane 23, which separates the corresponding silencing chambers on the upper cover 21 and the lower cover 22. The air inlet 3, the air outlet 4, and the air outlet chamber 6 are all located on the upper cover 21. This structural design allows space to be reserved on the lower cover 22 for the design of an airflow buffer chamber 7. The upper cover 21 is provided with multiple upper silencing chambers 51.

[0024] The airflow buffer chamber 7 is located on the lower cover 22 and is directly opposite the air outlet chamber 6. The airflow buffer chamber 7 and the air outlet chamber 6 are connected through a first airflow hole 231 on the air-insulating membrane 23. The lower cover 22 is provided with multiple lower silencing chambers 52, which are connected to multiple upper silencing chambers 51 through a second airflow hole 232 on the air-insulating membrane 23. The design of multiple upper silencing chambers 51 and multiple lower silencing chambers 52 can reduce air noise.

[0025] For example, the air barrier membrane 23 is made of rubber or silicone material, and the air barrier membrane 23 can seal the airtightness between the upper cover and the lower cover and block the multiple upper silencing chambers 51 and multiple lower silencing chambers 52.

[0026] For example, the first airflow hole 231 is strip-shaped, which allows for a larger airflow.

[0027] In one embodiment of this application, the air outlet chamber 6 is located in the middle of the upper cover 21, and multiple upper silencing chambers 51 surround the air outlet chamber 6; correspondingly, the airflow buffer chamber 7 is located in the middle of the lower cover 22, and multiple lower silencing chambers 52 surround the airflow buffer chamber 7. By placing the air outlet chamber 6 in the middle of the upper cover and the airflow buffer chamber 7 in the middle of the lower cover, the airflow path is made to circulate, and the path becomes longer, thereby improving the airflow noise reduction effect and the airflow uniformity.

[0028] In one embodiment of this application, the plurality of upper silencing chambers 51 include a first upper silencing chamber 511, a second upper silencing chamber 512, a third upper silencing chamber 513 and a fourth upper silencing chamber 514, wherein the first upper silencing chamber 511, the second upper silencing chamber 512 and the third upper silencing chamber 513 are connected in sequence.

[0029] The plurality of lower mufflers 52 include a first lower muffler 521, a second lower muffler 522, a third lower muffler 523, and a fourth lower muffler 524 that pass through each other in sequence. The first lower muffler 521 is connected to the third upper muffler 513 through a second airflow hole 2321 on the left side. The fourth lower muffler 524 is connected to the fourth upper muffler 514 through a second airflow hole 2322 on the right side. The fourth upper muffler 514 is connected to the cylinder section 11 of the pump body 1 through a first air exchange hole 501. The cylinder section 11 is connected to the air outlet chamber 6 through a second air exchange hole 502.

[0030] The airflow path is as follows: Inlet 3 → First upper silencer chamber 511 → Second upper silencer chamber 512 → Third upper silencer chamber 513 → First lower silencer chamber 521 → Second lower silencer chamber 522 → Third lower silencer chamber 523 → Fourth lower silencer chamber 524 → Fourth upper silencer chamber 514 → Cylinder section 11 → Exit chamber 6 → Exit port 4; Compared with the traditional air path structure, the design of this application has more silencer chambers. After noise reduction by eight silencer chambers, plus the exhaust chamber and airflow buffer chamber for noise reduction, there are a total of ten noise reduction chambers. The airflow is compressed every time it passes through a chamber (the area of ​​the air outlet is small, so the airflow is compressed) before it flows slowly through the chamber for noise reduction, so the noise reduction effect of the entire product is very good.

[0031] For example, there are two second airflow holes 2321 on the left and two second airflow holes 2322 on the right, located at both ends respectively, so that the airflow can be evenly distributed.

[0032] In one embodiment of this application, two adjacent upper silencing chambers 51 are connected by a first air vent 503, which has a top opening and a rectangular cross-sectional area. Similarly, two adjacent lower silencing chambers 52 are connected by a second air vent 504, which also has a top opening and a rectangular cross-sectional area. Designing the first and second air vents 503 as rectangular prisms with top openings allows for greater airflow (relatively smoother airflow) compared to traditional circular openings without top openings, resulting in less airflow compression and thus more effective noise reduction.

[0033] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A noise-reducing medical compressor pump, comprising a pump body and an air passage box disposed on and communicating with the pump body, characterized in that: The air passage box is provided with an air inlet and an air outlet. The air passage box is provided with multiple silencer chambers connected in sequence and an air outlet chamber connected to the air outlet. The silencer chamber at the beginning is connected to the air inlet; the silencer chamber at the end is connected to the air outlet chamber; the air passage box is also provided with an airflow buffer chamber connected to the air outlet chamber. The air passage box includes an upper cover and a lower cover that is closed and installed with the upper cover, and the upper cover and the lower cover are separated by an air-insulating membrane; the air inlet, the air outlet and the air outlet chamber are all located on the upper cover; the upper cover is provided with multiple upper silencer chambers; The airflow buffer chamber is located on the lower cover and is directly opposite the air outlet chamber. The airflow buffer chamber and the air outlet chamber are connected through a first airflow hole on the air-insulating membrane. The lower cover is provided with multiple lower silencers, and the multiple lower silencers are connected to the multiple upper silencers through a second airflow hole on the air-insulating membrane.

2. The noise-reducing medical compressor pump according to claim 1, characterized in that: The air outlet chamber is located in the middle of the upper cover, and multiple upper silencers surround the air outlet chamber; correspondingly, the airflow buffer chamber is located in the middle of the lower cover, and multiple lower silencers surround the airflow buffer chamber.

3. The noise-reducing medical compressor pump according to claim 1, characterized in that: The plurality of upper silencing chambers include a first upper silencing chamber, a second upper silencing chamber, a third upper silencing chamber, and a fourth upper silencing chamber, wherein the first upper silencing chamber, the second upper silencing chamber, and the third upper silencing chamber are connected in sequence; The plurality of lower mufflers include a first lower muffler, a second lower muffler, a third lower muffler, and a fourth lower muffler that are connected in sequence. The first lower muffler is connected to the third upper muffler through a second airflow hole on the left side. The fourth lower muffler is connected to the fourth upper muffler through a second airflow hole on the right side. The fourth upper muffler is connected to the cylinder section of the pump body through a first air exchange hole. The cylinder section is connected to the air outlet chamber through a second air exchange hole.

4. The noise-reducing medical compressor pump according to claim 1, characterized in that: The two adjacent upper silencing chambers that are connected to each other are connected by a first air vent, which has a top opening and a rectangular cross-sectional area.

5. The noise-reducing medical compressor pump according to claim 1, characterized in that: The two adjacent lower silencers are connected to each other through a second air vent, which has a top opening and a rectangular cross-sectional area.

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