An exhaust device

Abstract

The present invention discloses an exhaust device, including a main body, a ventilation cover and a meltblown cloth; the main body is provided with an air passage cavity, the air passage cavity is provided with an air inlet and an air outlet, the air outlet is used to connect to the air extraction equipment at the outer end; the ventilation cover is detachably fitted on the main body and covers the air inlet, the ventilation cover is provided with a plurality of vents; the meltblown cloth is fitted between the air passage cavity and the ventilation cover. The present invention can realize an exhaust structure with a simple structure and low cost, which can extract the exhaled air of a single patient in combination with the air extraction equipment at the outer end, such as an air pump, a blower, etc., to avoid cross infection in the ward, and is suitable for the improvement of the existing hospital ventilation system or the use in some temporary occasions; the ventilation cover and the main body are detachable structures, which are convenient for regular replacement of the internal meltblown cloth to ensure the filtering effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, in particular to an exhaust device. Background Art

[0002] Air is one of the most direct vectors of respiratory infectious diseases, which causes respiratory infectious diseases to spread very quickly and widely. People are paying more and more attention to the prevention of respiratory infectious diseases, and have started to wear masks voluntarily or in accordance with relevant policies. For patients with infectious diseases, during the treatment in the hospital, due to the limitations of the ward environment, there are usually 3-5 patients in a ward. A simple sneeze or cough may lead to the rapid spread of the virus, causing cross infection and making the condition more serious.

[0003] The fundamental solution to the above problems lies in good ventilation measures. However, for some old or small hospitals, the design of the ventilation system when they were established was not perfect and could not achieve good ventilation effects. At present, if you want to achieve good ventilation, you need to spend a lot of money to build and improve the ventilation ducts. Summary of the invention

[0004] The object of the present invention is to provide an exhaust device which has the characteristics of simple structure and strong exhaust gas pertinence, and is suitable for improving the existing hospital ventilation system or for use in temporary occasions.

[0005] In order to achieve the above object, the solution of the present invention is:

[0006] An exhaust device comprises a main body, a ventilation cover and a meltblown cloth; the main body is provided with an air passage cavity, the air passage cavity is provided with an air inlet and an air outlet, the air outlet is used to connect to an exhaust device at the outer end; the ventilation cover is detachably fitted on the main body and covers the air inlet, the ventilation cover is provided with a plurality of ventilation holes; the meltblown cloth is fitted between the air passage cavity and the ventilation cover.

[0007] The exhaust device also includes a splint with a vent, which is arranged on the main body and located on the inner side of the ventilation cover, and its vent is arranged opposite to the air inlet, and the meltblown cloth is fitted between the splint and the ventilation cover.

[0008] A shielding area is provided at the lower part of the ventilation cover, and the vent hole is not provided in the shielding area.

[0009] The air volume ratio between the air inlet and the air outlet is 2:1.

[0010] The air passage cavity comprises an upper air guide surface, a lower air flow channel, and air storage cavities located on both sides of the air guide surface and the air flow channel, and the air flow channel is communicated with the air outlet.

[0011] The rear side surface of the body is provided with a plurality of rows of mounting holes.

[0012] The body comprises a front cover and a rear shell, the air cavity and its air outlet are arranged on the rear shell, the air inlet is arranged on the front cover, and a sealing treatment is performed between the front cover and the rear shell.

[0013] The exhaust device further comprises a pipe joint connected to the air outlet, and a sealing ring is provided at the connection between the pipe joint and the air outlet.

[0014] The exhaust device further comprises a cover movably fitted on the upper end of the main body, two ends of the cover are pivotally fitted on both sides of the main body, and mounting parts for the cover to fit are arranged on both sides of the main body.

[0015] The exhaust device further includes a damper fitted between the cover and the mounting portion.

[0016] After adopting the above technical scheme, the present invention can realize an exhaust structure with simple structure and low cost. In combination with the exhaust equipment at the external end, such as an exhaust pump, a blower, etc., the exhaled air of a single patient can be extracted to avoid cross infection in the ward. The structure is suitable for the improvement of the existing hospital ventilation system or for use in some temporary occasions. The ventilation cover and the main body are detachable structures, which is convenient for the regular replacement of the internal meltblown cloth to ensure the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a specific embodiment of the present invention;

[0018] Figure 2 It is a front view of a specific embodiment of the present invention;

[0019] Figure 3 is a cross-sectional view of a specific embodiment of the present invention;

[0020] Figure 4 An exploded view of a specific embodiment of the present invention;

[0021] Figure 5 It is a three-dimensional diagram of a rear housing of a specific embodiment of the present invention;

[0022] Figure 6 It is a schematic diagram of the first use mode of a specific embodiment of the present invention;

[0023] Figure 7 It is a schematic diagram of the second use mode of a specific embodiment of the present invention;

[0024] Explanation of the accompanying drawings: main body 1; front cover 1A; rear shell 1B; air cavity 11; air guide surface 111; air flow channel 112; air storage cavity 113; air inlet 12; air outlet 13; mounting hole 14; mounting portion 15; mounting groove 16; ventilation cover 2; air vent 21; shielding area 22; meltblown cloth 3; splint 4; vent 41; pipe joint 5; sealing ring 6; cover 7; rubber block 8; damper 9; movable bracket 10; hospital bed 20. DETAILED DESCRIPTION

[0025] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0026] The present invention is an exhaust device, comprising a main body 1, a ventilation cover 2 and a melt-blown cloth 3.

[0027] The body 1 is provided with an air cavity 11, the air cavity 11 is provided with an air inlet 12 and an air outlet 13, and the air outlet 13 is used to connect to an air extraction device at the external end;

[0028] The ventilation cover 2 is detachably mounted on the body 1 and covers the air inlet 12. The ventilation cover 2 is provided with a plurality of ventilation holes 21.

[0029] The meltblown cloth 3 is fitted between the air passage cavity 11 and the ventilation cover 2 .

[0030] refer to Figures 1 to 5 Shown is a specific embodiment of the present invention.

[0031] The present invention further includes a clamping plate 4 provided with a vent 41, the clamping plate 4 is provided on the body 1 and located on the inner side of the vent cover 2, the vent 41 is provided opposite to the air inlet 12, and the meltblown cloth 3 is fitted between the clamping plate 4 and the vent cover 2. By providing the clamping plate 4, the meltblown cloth 3 is clamped by the clamping plate 4 and the vent cover 2 to achieve fixation, so as to prevent the exhaust device from directly sucking away the meltblown cloth 3 during operation, and even causing the ventilation duct to be blocked.

[0032] The lower part of the ventilation cover 2 is provided with a shielding area 22, and the shielding area 22 is not provided with a vent hole 21. When the air extraction device is working, the safety hazard caused by the patient's hair being sucked into the air cavity 11 can be avoided.

[0033] The air volume ratio between the air inlet 12 and the air outlet 13 is 2:1, thereby ensuring that the present invention has a higher air extraction efficiency when connected to an exhaust device, thereby ensuring an exhaust effect.

[0034] See also Figure 5As shown, the air passage cavity 11 includes an upper air guide surface 111, a lower air flow channel 112, and air storage cavities 113 located on both sides of the air guide surface 111 and the air flow channel 112. The air flow channel 112 is connected to the air outlet 13. The air storage cavity 113 can gather the air extracted from the ward in the air passage cavity 11, and guide it to the air flow channel 112 through the air guide surface 111, and then be extracted by the exhaust device. When the exhaust device stops working, the air pressure in the air storage cavity 113 can prevent the air flow in the ventilation duct from flowing back.

[0035] The rear side surface of the main body 1 is provided with a plurality of rows of mounting holes 14 , and different rows of mounting holes 14 correspond to headboards or brackets of different types of beds in a hospital, so as to facilitate the installation of the present invention.

[0036] The body 1 includes a front cover 1A and a rear shell 1B, the air cavity 11 and its air outlet 13 are arranged on the rear shell 1B, the air inlet 12 is arranged on the front cover 1A, and the front cover 1A and the rear shell 1B are sealed to prevent air leakage. In this embodiment, the rear shell 1B is provided with a mounting groove 16 for assembling a sealing member.

[0037] The present invention further comprises a pipe joint 5 connected to the air outlet 13 , and a sealing ring 6 is provided at the connection between the pipe joint 5 and the air outlet 13 .

[0038] The present invention also includes a cover 7 that is movably fitted on the upper end of the body 1, and the two ends of the cover 7 are pivotally fitted on both sides of the body 1. Both sides of the body 1 are provided with mounting portions 15 for the cover 7 to fit. By providing the cover 7, when necessary (such as when the patient encourages coughing or sneezing), the patient's head can be covered downwards, and the virus is concentrated in the cover 7 and waits to be sucked away, thereby preventing the virus from spreading. In this embodiment, a rubber block 8 is provided in the mounting portion 15 to prevent air leakage and provide resistance to prevent the cover 7 from falling quickly.

[0039] The present invention further comprises a damper 9 fitted between the cover 7 and the mounting portion 15. By providing the damper 9, the angle of the cover 7 can be adjusted and fixed according to the use requirements to prevent it from falling.

[0040] refer to Figure 6 As shown, the present invention can be directly mounted on the movable support 10, so as to move with the patient. Figure 7 As shown, the present invention can also be installed at the head of the bed 20. When the patient lies on the bed, the present invention faces the patient's head and is used to cooperate with the hospital's ventilation system or exhaust equipment to extract the air exhaled by the patient. In actual use, a filter device can also be set between the air outlet 13 and the exhaust device to ensure the cleanliness of the air.

[0041] Through the above scheme, the present invention can realize an exhaust structure with simple structure and low cost. In combination with the exhaust equipment at the external end, such as an exhaust pump, a blower, etc., the exhaled air of a single patient can be extracted to avoid cross infection in the ward. The structure is suitable for the improvement of the existing hospital ventilation system or for use in some temporary occasions. The ventilation cover 2 and the main body 1 are detachable structures, which is convenient for the regular replacement of the internal meltblown cloth 3 to ensure the filtering effect.

[0042] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. An exhaust device, characterized in that: Including a body, a vent cover and a meltblown cloth; The main body is provided with an air cavity, the air cavity is provided with an air inlet and an air outlet, and the air outlet is used to connect to the air extraction equipment at the outer end; The ventilation cover is detachably fitted on the body and covers the air inlet, and the ventilation cover is provided with a plurality of ventilation holes; The melt-blown cloth is fitted between the air passage cavity and the ventilation cover; It also includes a clamping plate provided with a vent, the clamping plate is arranged on the main body and located on the inner side of the vent cover, the vent is arranged opposite to the air inlet, and the meltblown cloth is fitted between the clamping plate and the vent cover; A shielding area is provided at the lower part of the ventilation cover, and the vent hole is not provided in the shielding area; The air passage cavity comprises an upper air guide surface, a lower air flow channel, and air storage cavities located on both sides of the air guide surface and the air flow channel, and the air flow channel is communicated with the air outlet.

2. An exhaust device according to claim 1, characterized in that: The air volume ratio between the air inlet and the air outlet is 2:

1.

3. An exhaust device according to claim 1, characterized in that: The rear side surface of the body is provided with a plurality of rows of mounting holes.

4. An exhaust device according to claim 1, characterized in that: The body comprises a front cover and a rear shell, the air cavity and its air outlet are arranged on the rear shell, the air inlet is arranged on the front cover, and a sealing treatment is performed between the front cover and the rear shell.

5. An exhaust device according to claim 1, characterized in that: It also includes a pipe joint connected to the air outlet, and a sealing ring is provided at the connection between the pipe joint and the air outlet.

6. An exhaust device according to claim 1, characterized in that: It also includes a cover hood movably matched with the upper end of the main body, two ends of the cover hood are pivotally matched with the two sides of the main body, and mounting parts for the cover hood to match are arranged on the two sides of the main body.

7. An exhaust device according to claim 6, characterized in that: The invention also includes a damper engaged between the cover and the mounting portion.

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