A rocking ventilator

Abstract

The utility model relates to a swing type ventilation device, including the air chamber, the air chamber includes the upper cover body and the lower casing, and the upper cover body and the lower casing form the gas cavity, and the upper cover body or the lower casing is provided with the air inlet for communicating with the outside gas source, the upper cover body and the lower casing combination's both ends form left and right two air outlets, and the lower casing has the arc bottom surface of middle low both ends high, and the seal ball that can roll is placed in the cavity.

Description

Technical Field

[0001] This utility model relates to a ventilation device, and more particularly to a swing-type ventilation device. Background Technology

[0002] In bioreactors and other equipment, it is often necessary to introduce gas into the container. Sometimes, exchange-type gas introduction is required, which means that there are multiple gas inlets (usually two). During a certain period of time, some gas inlets are introduced while the remaining gas inlets are not introduced. In the next time period, the introduced / not introduced gas inlets switch to not introduced / introduced gas inlets. In order to achieve such a periodic control effect, solenoid valves are usually used to continuously switch the gas passage. This not only has a complex structure and high cost, but also results in a short equipment lifespan after long-term use. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a swing-type ventilation device, comprising an air chamber, wherein the air chamber includes an upper cover and a lower shell, the upper cover and the lower shell forming a gas cavity, and an air inlet is provided on the upper cover or the lower shell for communicating with an external air source.

[0004] Furthermore, the two ends where the upper cover and the lower shell are joined form two air outlets on the left and right. The lower shell has an arc-shaped bottom surface that is low in the middle and high at both ends, and a rolling sealing ball is placed in the gas cavity.

[0005] Furthermore, the upper cover and the lower shell are integrally formed or sealed together.

[0006] Furthermore, the depth of the arc shape of the lower housing is adjustable.

[0007] Furthermore, the swing-type ventilation device also includes a swing drive device, which drives the air chamber to tilt left and right periodically.

[0008] Furthermore, when the air chamber tilts to the left to a certain position, the sealing ball blocks the air outlet on the left side; when the air chamber tilts to the right to a certain position, the sealing ball blocks the air outlet on the right side.

[0009] This utility model's swing-type ventilation device achieves periodic gas switching by tilting the air chamber left and right and periodically blocking the air outlets at both ends with a sealing ball. Compared to the control method of a solenoid valve, its structure is simpler and does not require complex control programs to achieve periodic ventilation switching. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a swing-type ventilation device; Figure 2 This is a schematic diagram showing the air chamber tilted to the left. Figure 3This is a schematic diagram of an oval-shaped air chamber structure. Detailed Implementation

[0011] See Figure 1 The swing-type ventilation device includes an air chamber 1, which comprises an upper cover 2 and a lower shell 3, forming a gas cavity 4. An air inlet 5 is provided on the upper cover 2 or the lower shell for connecting to an external air source. Two air outlets 6 are formed at the joint of the upper cover 2 and the lower shell 3. The lower shell 3 has an arc-shaped bottom surface that is lower in the middle and higher at both ends. A sealing ball 7 is placed inside the cavity 4. When the air chamber 1 tilts periodically left and right, the sealing ball 7 periodically blocks the air outlets 6 at both ends of the gas cavity 4, causing gas to periodically flow out from the two air outlets 6, thereby switching the gas passage.

[0012] See Figure 2 When the air chamber 1 tilts to the left to its limit position, the sealing ball 7 rolls along the lower shell 3 to the left air outlet 6, blocking the left air outlet 6. At this time, the gas from the gas source flows out from the right air outlet 6 after passing through the air inlet 5 and the gas cavity 4. Similarly, when the air chamber 1 tilts to the right to its limit position, the gas flows out from the left air outlet 6.

[0013] The swing-type ventilation device of this invention also includes a swing drive device (not shown), which drives the air chamber 1 to tilt and swing left and right. The swing drive device can achieve left and right swinging through mechanical transmission rather than electronic control; this is a conventional technology and will not be described in detail. Therefore, compared to the control method of a solenoid valve, the swing-type ventilation device of this invention has a simpler structure and can achieve periodic switching of ventilation without complex control programs.

[0014] See Figure 3 As will be understood by those skilled in the art, the upper cover 2 and the lower shell 3 can be integrally formed. The overall shape can also be rugby ball shaped with vents at both ends.

[0015] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A swing-type ventilation device, characterized in that, It includes an air chamber (1), which includes an upper cover (2) and a lower shell (3). The upper cover (2) and the lower shell (3) form a gas cavity (4). An air inlet (5) is provided on the upper cover (2) or the lower shell for communicating with an external air source.

2. The swing-type ventilation device according to claim 1, characterized in that, The upper cover (2) and the lower shell (3) are joined at both ends to form two air outlets (6) on the left and right. The lower shell (3) has an arc-shaped bottom surface that is low in the middle and high at both ends. A rolling sealing ball (7) is placed in the gas cavity (4).

3. The swing-type ventilation device according to any one of claims 1-2, characterized in that, The upper cover (2) and the lower shell (3) are integrally formed or sealed together.

4. The swing-type ventilation device according to claim 3, characterized in that, The lower shell (3) has an adjustable arc shape.

5. The swing-type ventilation device according to claim 1, characterized in that, The swing ventilation device also includes a swing drive device, which drives the air chamber (1) to tilt left and right periodically.

6. The swing-type ventilation device according to any one of claims 1, 2, 4-5, characterized in that, When the air chamber (1) tilts to the left to a certain position, the sealing ball (7) blocks the air outlet on the left side. When the air chamber (1) tilts to the right to a certain position, the sealing ball (7) blocks the air outlet on the right side.

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