TWM532287U - Active venting system - Google Patents

Description

Active exhaust system

The present invention relates to an exhaust system, and more particularly to an active exhaust system for protecting equipment and breathing equipment, and effectively removing the exhaled gas of the wearer located inside the protective equipment or the breathing apparatus.

Masks and respirators are used as protective gear for air pollutants such as smog and flu. Commercially available products that are not actively ventilated are classified into two main categories: disposable disposable respirators and reusable respirators with removable filter cartridges. These products that do not have active ventilation are usually equipped with a one-way valve (passive valve) to allow exhaled gas to escape. However, the effectiveness of these passive valves to remove warm and humid exhaled gases is highly dependent on breathing depth and pressure.

Typically, exhaled gases are forced through the filter due to the limited window of the one-way valve. As the warm exhaled gas flows through the cold filter, the moisture in the warm exhaled gas condenses, partially or completely blocking the air passages in the filter. The reduction in the size of the air passage directly increases the air resistance, and the increase in air resistance causes difficulty in breathing. In addition, the lack of a proper expiratory path causes hot and humid exhaled gases to circulate within the body of the respirator, thus causing discomfort to the user.

To overcome this problem, a breathing apparatus having a positive pressure or an air supply powered by a fan and/or blower is available. These devices are designed to supply air flow to suit the individual's breathing needs. These products are typically bulky and require a large power supply to maintain long periods of airflow and pressure. To meet the high rate of airflow, this power supply is usually additive and not part of the body of the protective equipment. Therefore, these products are not suitable for everyday use by the general public.

Accordingly, there is a need for an active exhaust system that can be comfortably used for extended periods of time when incorporated into a breathing apparatus or protective equipment, and that is suitable for the general public. Additionally, such devices should be capable of minimizing heat and humidity resulting in contact of the exhaled gas of the wearer to the face, and having an effective means of expelling heat and moisture during each exhalation cycle.

The purpose of the present work is to provide an active exhaust system for extracting internal heat and moisture from the protective device covering the wearer's mouth and nose and the respiratory device, as well as the exhaled gas of the wearer.

The present invention discloses an active exhaust system assembled to a protective device or a breathing apparatus, comprising: a housing; a blower disposed inside the housing and having a first inlet, a second inlet and an outlet The first inlet corresponds to the inside of the protective device or the breathing apparatus, the second inlet faces the inside of the housing, and the blower extracts exhaled gas from the protective device or the breathing device via the first inlet and the outlet And withdrawing gas from the interior of the housing via the second inlet and the outlet; and a control unit disposed inside the housing and controlling the blower.

In order to give your reviewers a better understanding and understanding of the characteristics of the creation and the effectiveness of the creation, please follow the example and the detailed description, as explained below:

Please refer to the first figure and the second figure, which are respectively a schematic perspective view and an exploded view of an active exhaust system according to an embodiment of the present invention. As shown in the first and second figures, the present embodiment provides an active exhaust system 1 for use with a protective device or a breathing device, such as a mask or a respirator. The active exhaust system 1 includes a housing 10, a blower 11 and a control unit 12. Both the blower 11 and the control unit 12 are disposed inside the casing 10. The control unit 12 is coupled to the blower 11 to control the blower 11 .

The housing 10 has a first opening 101 and a second opening 102. The blower 11 has a first inlet 111, a second inlet 112, an outlet 113 and a plurality of blades 114 (as shown in the third figure). The first inlet 111 corresponds to the first opening 101, the second inlet 112 faces the inside of the housing 10, and the outlet 113 corresponds to the second opening 102. The control unit 12 includes a printed circuit board 121 and a battery 122. The battery 122 is equivalent to a power source, and the battery 122 is disposed on the printed circuit board 121. The printed circuit board 121 has a control circuit and is a control circuit board.

The control circuit drives the blower 11 and the battery 122 provides an electrical energy to the blower 11. The battery 122 can be charged via a conductive wire or cable coupled to a mobile power source and an input port 124 disposed on the printed circuit board 121. In the present embodiment, the control unit 12 is stacked on the surface of the blower 11 having the second inlet 112, so that the second inlet 112 of the blower 11 of the present embodiment faces the printed circuit board 121. Further, a switch 126 is provided on the printed circuit board 121 to turn on/off the blower 11.

Please refer to the third figure, which is a side view of the proposed active exhaust system assembled to the mask. When the active exhaust system 1 is assembled to a mask 2 or a respirator, the first opening 101 of the housing 10 corresponds to the opening of the mask 2 or the respirator or an exhalation valve 21, so the first inlet 111 of the blower 11 Corresponds to the opening of the mask 2 or the respirator or the exhalation valve 21. The blades 114 of the blower 11 are not parallel to a surface 22 of the mask 2, so the active exhaust system 1 has advantages of better pumping efficiency, small volume and low noise.

The blower 11 is driven by the control unit 12, and the blower 11 extracts the gas located inside the mask 2 via the first inlet 111 to extract moisture, heat, and carbon dioxide located inside the mask 2, and the blower 11 is removed from the shell via the second inlet 112. The interior of the body 10 draws a gas containing moisture and heat, such as moisture and heat generated by the control unit 12 during operation. Heat, moisture, and carbon dioxide located inside the mask 2 and inside the casing 10 are extracted through the outlet 113 of the active exhaust system 1 and the second opening 102. Therefore, the active exhaust system 1 has a better airflow and cooling effect.

Further, when the active exhaust system 1 is assembled to the mask 2, the second opening 102 is not facing upward, so that the extracted gas will not contact the wearer's eyes without causing discomfort.

When the active exhaust system 1 is disassembled into the mask 2, the mask 2 can still be used without the active exhaust system 1. When the mask 2 is discarded, the active exhaust system 1 can still be fitted to another mask or respirator, so that the active exhaust system 1 can be reused to avoid resource consuming.

Referring back to the third figure, the housing 10 has a gas space 103 between an upper surface 104 of the interior of the housing 10 of the active exhaust system 1 and the blower 11, which allows for some gas that cannot be quickly withdrawn via the outlet 113. It is sucked through the first inlet 111 and passed over to the gas space 103, so that the pressure of the second inlet 112 can be lowered, so that the acoustic noise and the vibration of the active exhaust system 1 can be reduced. In an embodiment of the present creation, the upper surface 104 of the housing 10 can be a curved surface to form a gas space 103.

Referring to the second figure, the active exhaust system 1 further includes a guiding member 13 disposed between the outlet 113 of the blower 11 and the second opening 102 of the housing 10. The guide 13 directs the extracted gas from the outlet 113 to the second opening 102 so that the extracted gas will not flow back into the interior of the housing 10.

Please refer to the fourth and fifth figures, which are respectively a schematic perspective view and an exploded view of an active exhaust system according to another embodiment of the creation. As shown in the fourth and fifth figures, the control unit 12 and the air blower 11 of the present embodiment are mutually juxtaposed, and the control unit 12 is not stacked on the air blower 11, so that the second inlet 112 of the air blower 11 of the present embodiment faces the shell. The upper surface of the interior of the body 10.

However, the above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, the shapes, structures, features, and spirits described in the scope of the patent application are equally changed and modified. It should be included in the scope of the patent application for this creation.

1‧‧‧Active exhaust system
10‧‧‧shell
101‧‧‧ first opening
102‧‧‧second opening
103‧‧‧ gas space
104‧‧‧ upper surface
11‧‧‧Blowers
111‧‧‧ first entrance
112‧‧‧second entrance
113‧‧‧Export
114‧‧‧ blades
12‧‧‧Control unit
121‧‧‧Printed circuit board
122‧‧‧Battery
124‧‧‧ Input埠
126‧‧‧ switch
13‧‧‧Guide
2‧‧‧ masks
21‧‧‧Exhalation valve
22‧‧‧ Surface

The first figure is a schematic perspective view of an active exhaust system according to an embodiment of the present invention; the second figure is an exploded schematic view of an active exhaust system according to an embodiment of the present invention; 4 is a perspective view of an active exhaust system of another embodiment of the present invention; and FIG. 5 is an exploded perspective view of an active exhaust system of another embodiment of the present invention.

1‧‧‧Active exhaust system

10‧‧‧shell

101‧‧‧ first opening

102‧‧‧second opening

111‧‧‧ first entrance

124‧‧‧ Input埠

126‧‧‧ switch

Claims (10)

An active exhaust system, which is mounted on a protective device or a breathing device, comprising: a casing; a blower disposed inside the casing and having a first inlet, a second inlet and an outlet, a first inlet corresponding to the protective device or an interior of the breathing apparatus, the second inlet facing an interior of the housing, the blower extracting exhaled gas from the protective device or the breathing apparatus via the first inlet and the outlet, and Gas is withdrawn from the interior of the housing via the second inlet and the outlet; and a control unit disposed within the housing and controlling the blower. The active exhaust system of claim 1, wherein the housing has a gas space between an upper surface of the housing and the blower. The active exhaust system of claim 1, wherein the housing has a first opening and a second opening, the first opening corresponding to the protective device or the interior of the breathing apparatus, the blower The first inlet corresponds to the first opening, and the outlet of the blower corresponds to the second opening. The active exhaust system of claim 3, further comprising a guiding member disposed between the outlet of the blower and the second opening of the housing. The active exhaust system of claim 3, wherein the second exhaust opening of the housing is not facing upward when the active exhaust system is mounted to the protective device or the breathing apparatus. The active exhaust system of claim 1, wherein the control unit comprises a control circuit board and a power source, and the control circuit board controls the air blower, the power supply providing an electric energy to the air blower. The active exhaust system of claim 6, wherein the power source is a battery. The active exhaust system of claim 1, wherein the control unit is stacked on a surface of the blower having the second inlet, the second inlet of the blower facing the control unit. The active exhaust system of claim 1, wherein the control unit and the blower are side by side. The active exhaust system of claim 1, wherein the active exhaust system is detachable from the protective device or the breathing device.