Gas circuit switching structure and ventilator

Abstract

The present invention relates to an air path switching structure and a ventilator. The air path switching structure includes: a shell, a flow channel is formed inside the shell; an air inlet and an air outlet, the air inlet and the air outlet are arranged on the shell at intervals and are both connected to the flow channel, the air inlet is used to connect to a turbine box, the air outlet is used to connect to a water tank, and any two of the air outlet direction of the air outlet, the air inlet direction of the air inlet, and the extension direction of the flow channel are arranged at an angle so that the air flow is blocked at least once under the action of the inner wall of the flow channel and discharged from the air outlet. After the noise transmitted from the turbine box enters the flow channel, the noise will be blocked at least once, so that the noise can rebound back to the inside of the turbine box, thereby further reducing the noise between the turbine box and the water tank.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an air path switching structure and a ventilator. Background Art

[0002] In life, various types of ventilators have been widely used in hospitals. The ventilator mainly controls its turbine through a program. When the turbine is running, it drives the gas to circulate, thereby assisting the patient's breathing. However, when the turbine is running, it always produces a lot of noise, which has an adverse effect on the patient's sleep and health.

[0003] In the ventilators currently in use, only a silencer structure is designed inside the turbine box. However, the air duct design between the turbine box and the water tank is too simple, and the airflow directly flows from the turbine box to the water tank, without considering the noise generated when the airflow derived from the turbine box enters the water tank. Summary of the invention

[0004] Based on this, it is necessary for the present invention to provide an air path switching structure and a ventilator to reduce the noise between the turbine box and the water tank.

[0005] A gas path switching structure, used in a ventilator, comprises: a shell, a flow channel is formed inside the shell; an air inlet and an air outlet, the air inlet and the air outlet are arranged on the shell at intervals and are both connected to the flow channel, the air inlet is used to be connected to a turbine box, and the air outlet is used to be connected to a water tank, and any two of the air outlet direction of the air outlet, the air inlet direction of the air inlet, and the extension direction of the flow channel are arranged at an angle so that part of the noise transmitted from the turbine box is reflected back to the interior of the turbine box under the action of the inner wall of the flow channel.

[0006] The above-mentioned air path switching structure sets a flow channel for air flow between the turbine box and the water tank, so that the air flow blown out of the turbine box can experience a long distance, a large resistance, and at least one obstruction before entering the water tank. In addition, the noise transmitted from the turbine box can be rebounded back to the inside of the turbine box, thereby further reducing the noise between the turbine box and the water tank.

[0007] In one embodiment, the air inlet portion is a first sealing portion, which is used to seal and fit with the turbine box; and / or the air outlet portion is a second sealing portion, which is used to seal and fit with the water tank.

[0008] In one embodiment, the air intake direction of the air intake portion is perpendicular to the air outlet direction of the air outlet portion.

[0009] In one of the embodiments, the air inlet direction of the air inlet portion and / or the air outlet direction of the air outlet portion are arranged perpendicular to the extension direction of the flow channel.

[0010] In one of the embodiments, the airflow is blocked at least once by the inner wall of the flow channel and is discharged from the air outlet.

[0011] In one embodiment, the air inlet portion is provided with a first opening, and the housing is provided with an air inlet opposite to the first opening; and / or,

[0012] The air outlet portion is provided with a second opening, and the shell is provided with an air outlet opposite to the second opening.

[0013] In one embodiment, the housing is provided with a recess, and the recess is used to match the outer contour of the turbine box; and / or,

[0014] The air outlet portion is provided with a first buckle position, and the shell is provided with a second buckle position that is snap-fitted with the first buckle position.

[0015] A ventilator comprises: a water tank, a turbine box, and the above-mentioned air path switching structure, wherein the air inlet is communicated with the turbine box, and the air outlet is communicated with the water tank.

[0016] The above-mentioned ventilator is provided with a flow channel for air flow between the turbine box and the water tank. The air flow blown out from the turbine box can experience at least one obstruction before entering the water tank, so that the air flow generated in the turbine box has to go through a longer distance and greater resistance to reach the water tank. When the air flow blows into the water tank, the noise generated by the collision between the air flow and the water in the water tank is also reduced, which is beneficial to reducing the noise between the turbine box and the water tank.

[0017] In one embodiment, the water tank and the turbine box are located on opposite sides of the air path adapter structure.

[0018] In one of the embodiments, a silencer structure is provided inside the turbine box, and the silencer structure is used to silence the noise generated inside the turbine box and the noise reflected from the air path adapter structure to the inside of the turbine box. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of an exploded structure of a ventilator described in one embodiment;

[0020] Figure 2 It is a schematic diagram of the exploded structure of the gas path switching structure described in one embodiment;

[0021] Figure 3 It is a schematic cross-sectional structure diagram of the gas path switching structure described in an embodiment.

[0022] Description of reference numerals:

[0023] 1. Respirator; 10. Air circuit switching structure; 110. Air inlet; 111. First opening; 112. First sealing portion; 120. Air outlet; 121. Second opening; 122. First buckle position; 123. Second sealing portion; 130. Shell; 131. Air inlet; 132. Air outlet; 133. Second buckle position; 140. Flow channel; 150. Recess; 20. Water tank; 210. Water tank air inlet; 30. Turbine box; 310. Turbine box air outlet. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0025] A gas circuit switching structure 10, used in a ventilator 1, please refer to Figure 1 and Figure 3 , including: a shell 130, an air inlet 110, and an air outlet 120. A flow channel 140 is formed inside the shell 130. The air inlet 110 and the air outlet 120 are arranged on the shell 130 at intervals, and are both connected to the flow channel 140. The air inlet 110 is used to be connected to the turbine box 30. The air outlet 120 is used to be connected to the water tank 20. Among the air outlet direction of the air outlet 120, the air intake direction of the air inlet 110, and the extension direction of the flow channel 140, any two directions are set at an angle, so that the inner wall of the flow channel 140 can reflect part of the noise transmitted from the turbine box 30 back to the inside of the turbine box 30.

[0026] The above-mentioned air path adapter structure 10 is provided with a flow channel 140 for air flow between the turbine box 30 and the water tank 20. The air flow blown out from the turbine box 30 can experience at least one obstruction before entering the water tank 20. The noise transmitted from the turbine box 30 will experience at least one obstruction after entering the flow channel 140, so that the noise can bounce back to the turbine box 30, thereby further reducing the noise between the turbine box 30 and the water tank 20.

[0027] In addition, the air path adapter structure 10 can also effectively guide the gas flow in the flow channel 140, so that the airflow is smoother and more regular after leaving the flow channel 140 and entering the water tank 20, which is conducive to achieving precise control of the ventilator airflow and improving the user's treatment and experience effects.

[0028] It should be noted that the air intake direction of the air intake portion 110 is Figure 1The S arrow in the middle indicates the direction; the outlet direction of the air outlet portion 130 is the direction indicated by the T arrow; the extension direction of the flow channel 140 is any direction indicated by the X arrow.

[0029] The extension direction of the flow channel 140 is the overall extension trend of the flow channel 140, that is, the flow channel 140 can extend linearly in any direction indicated by the arrow X. The flow channel 140 located inside the housing 130 can be "S" shaped or other irregular shapes to increase the distance of the airflow in the flow channel 140 and the number of obstructions, thereby more effectively reducing the noise between the turbine box 30 and the water tank 20.

[0030] It can be understood that the inner wall of the flow channel 140 is a sound insulation structure made of a high-density material. When the inner wall of the flow channel 140 is a sound insulation structure made of a high-density material, the inner wall that is not parallel to the airflow direction can bounce part of the noise transmitted from the turbine box 30 back to the inside of the turbine box 30, preventing more noise from entering the flow channel 140, so as to reduce the noise between the turbine box 30 and the water tank 20.

[0031] It is also understandable that the inner wall of the flow channel 140 can also be a sound-absorbing structure made of a sound-absorbing material. When the inner wall of the flow channel 140 is a sound-absorbing structure made of a sound-absorbing material, part of the noise transmitted from the turbine box 30 will be silenced in the flow channel 140 to further reduce the noise between the turbine box 30 and the water tank 20.

[0032] Among them, a plurality of sound-absorbing sponges can be arranged on the sound-absorbing structure, and of course a whole piece of sound-absorbing sponge can also be arranged. The sound-absorbing sponge has a good noise reduction effect and can be helpful to further reduce noise.

[0033] In one embodiment, please refer to Figure 1 and Figure 2 The air inlet 110 is a first sealing portion 112. The first sealing portion 112 is used to seal and match with the turbine box 30. The air outlet 120 is a second sealing portion 123. The second sealing portion 123 is used to seal and match with the water tank 20.

[0034] It can be understood that the first sealing portion 112 can be a sealing strip or a sealing ring made of materials such as silicone rubber, nitrile rubber, chloroprene rubber, polyurethane rubber, and polypropylene rubber.

[0035] It can also be understood that the first sealing portion 112 can be fixed to the air inlet portion 110 by, but not limited to, bolt connection, clamping, bonding, etc. Of course, it can also be an integral molding method. Similarly, the second sealing portion 123 can be fixed to the air outlet portion 120 by, but not limited to, bolt connection, clamping, bonding, etc. Of course, it can also be an integral molding method.

[0036] It can also be understood that when the air inlet 110 and the first sealing part 112 are integrally formed, the air inlet 110 can make the shell 130 and the turbine box 30 in a sealed state, preventing air leakage and the like from generating more noise, which is beneficial to reducing the noise at the connection between the turbine box 30 and the shell 130; when the air outlet 120 and the second sealing part 123 are integrally formed, the air outlet 12 can make the shell 130 and the water tank 20 in a sealed state, preventing air leakage and the like from generating more noise, which is beneficial to reducing the noise at the connection between the shell 130 and the water tank 20.

[0037] Furthermore, a turbine box air outlet 310 is provided on the turbine box 30, and a water tank air inlet 210 is provided on the water tank 20. The turbine box air outlet 310 is sealed with the air inlet 110, so that the airflow blown out from the turbine box air outlet 310 will not leak when entering the flow channel 140 through the air inlet 110, which can further reduce the noise between the turbine box 30 and the housing 130. The water tank air inlet 210 is sealed with the air outlet 120, so that the airflow entering the flow channel 140 will not leak when entering the water tank through the air outlet 120 and the water tank air inlet 210 in sequence, which can further reduce the noise between the housing 130 and the water tank 20.

[0038] In one embodiment, please refer to Figure 1 and Figure 3 The air inlet direction of the air inlet 110 is perpendicular to the air outlet direction of the air outlet 120. Since the airflow blown out of the turbine box 30 enters the flow channel 140 from the air inlet 110, blows out of the flow channel 140 from the air outlet 120, and enters the water tank 20, the noise transmitted from the turbine box 30 will experience at least one positive blockage in the flow channel 140 to bounce the noise back to the inside of the turbine box 30, further reducing the noise between the turbine box 30 and the water tank 20.

[0039] For further information, please refer to Figure 1 and Figure 3 The air intake direction of the air intake portion 110 and / or the air outlet direction of the air outlet portion 120 are arranged perpendicular to the extension direction of the flow channel 140.

[0040] It can be understood that when the air intake direction of the air intake part 110 is perpendicular to the extension direction of the flow channel 140, the air flow blown out of the turbine box 30 experiences a frontal blockage before entering the flow channel 140, so as to reflect the noise transmitted from the turbine box 30 back to the inside of the turbine box 30; when the air outlet direction of the air outlet part 120 is perpendicular to the extension direction of the flow channel 140, the air flow blown out from the flow channel 140 experiences a frontal blockage before entering the water tank 20, so as to further reflect the noise carried by the air flow back to the inside of the turbine box 30.

[0041] It can also be understood that when the air intake direction of the air intake portion 110 is arranged perpendicularly to the extension direction of the flow channel 140 and the air outlet direction of the air outlet portion 120 is also arranged perpendicularly to the extension direction of the flow channel 140, the air flow can experience at least two positive obstructions in the flow channel 140, so as to further reflect the noise entering the flow channel 140 back to the interior of the turbine box 30, thereby further reducing the noise between the turbine box 30 and the water tank 20.

[0042] In one embodiment, please refer to Figure 1 and Figure 3 , the airflow is blocked at least once by the inner wall of the flow channel 140 and is discharged from the air outlet 120. That is, the airflow generated in the turbine box 30 has to pass through a longer distance and more resistance to reach the water tank 20. At the same time, the noise transmitted from the turbine box 30 will be reflected and pushed into the turbine box 30 when it is blocked, thereby reducing the noise in the flow channel 140. In addition, when the airflow blows into the water tank 20, the noise generated by the collision between the airflow and the water in the water tank 20 is also reduced, which is conducive to reducing the noise between the turbine box 30 and the water tank 20.

[0043] In one embodiment, please refer to Figure 2 The air inlet 110 is provided with a first opening 111. The housing 130 is provided with an air inlet 131 opposite to the first opening 111. The air outlet 120 is provided with a second opening 121. The housing 130 is provided with an air outlet 132 opposite to the second opening 121.

[0044] It can be understood that when the air inlet 131 is aligned with the first opening 111, the air inlet 110 is sealed and matched with the shell 130; when the air outlet 120 is aligned with the second opening 121, the air outlet 120 is sealed and matched with the shell 130. At this time, the turbine box 30, the air inlet 110, the shell 130, the air outlet 120, and the water tank 20 are sealed and connected in sequence. The sealed matching method ensures that the airflow will not leak when flowing through the turbine box 30, the air inlet 110, the flow channel 140, the air outlet 120, and the water tank 20, so as to improve the air tightness of the connection and further reduce the noise between the turbine box 30 and the water tank 20.

[0045] In one embodiment, please refer to Figures 1 to 3 , a recess 150 is provided on the shell 130. The recess 150 is used to match the outer contour of the turbine box 30. A first buckle position 122 is provided on the air outlet 120. A second buckle position 133 is provided on the shell 130 to snap fit with the first buckle position 122. It can be seen that the recess 150 on the shell 130 is adapted to the outer contour of the turbine box 30, which can reduce the space occupied by the shell 130, improve the utilization rate of the space, and improve the adaptability between the gas path adapter structure 10 and the turbine box 30.

[0046] It is understandable that the shape of the recess 150 on the housing 130 is not unique. When the outer contour of the turbine box 30 changes, the shape of the recess 150 of the turbine box 30 should also change accordingly, so that the portion of the housing 130 that contacts the turbine box 30 can adapt to the outer contour of the turbine box 30.

[0047] Of course, in other embodiments, the recess 150 may not be provided on the housing 130. For example, when the contact portion between the turbine box 30 and the housing 130 is recessed toward the center of the turbine box 30, the housing 130 should be convex toward the center of the turbine box 30 so that the housing 130 is adapted to the outer contour of the turbine box 30.

[0048] It can also be understood that the first buckle position 122 is a positioning protrusion and the second buckle position 133 is a positioning depression, and the first buckle position 122 is inserted into the second buckle position 133 to achieve snap-fitting; or the first buckle position 122 is a positioning depression, the second buckle position 133 is a positioning protrusion, and the second buckle position 133 is inserted into the first buckle position 122 to achieve snap-fitting.

[0049] Specifically, in this embodiment, the first buckle position 122 is a positioning protrusion, and the second buckle position 133 is a positioning depression.

[0050] In one embodiment, a ventilator 1, please refer to Figure 1 and Figure 3 , including: a water tank 20, a turbine box 30, and the above-mentioned air circuit adapter structure 10. The air inlet 110 is connected to the turbine box 30. The air outlet 120 is connected to the water tank 20. It can be seen that the above-mentioned ventilator 1 can utilize the air circuit adapter structure 10 located between the water tank 20 and the turbine box 30 to connect the water tank 20 with the turbine box 30 while reducing the noise between the turbine box 30 and the water tank 20, thereby creating a quieter and more comfortable use environment for the user.

[0051] In one embodiment, please refer to Figure 1 The water tank 20 and the turbine box 30 are respectively located on opposite sides of the gas circuit adapter structure 10. It can be seen that the turbine box 30 and the water tank 20 are connected by the gas circuit adapter mechanism located in the middle, so that the turbine box 30 and the water tank 20 are separated in space, so that the various structures of the ventilator 1 are relatively independent, which is convenient for operators to disassemble and replace.

[0052] For further information, please refer to Figure 1 The turbine box 30 is provided with a turbine box air outlet 310 which can be matched with the air inlet 110 , and the water tank 20 is provided with a water tank air inlet 210 which can be matched with the air outlet 120 .

[0053] In one embodiment, please refer to Figure 1A silencer structure (not shown) is provided inside the turbine box 30. The silencer structure is used to silence the noise generated inside the turbine box 30 and the noise reflected from the gas path adapter structure 10 to the inside of the turbine box 30.

[0054] Optionally, the silencer structure located inside the turbine box 30 may be a silencer device made of materials such as silencer cotton and slow rebound cotton.

[0055] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", "fixed", "matched" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A ventilator, characterized in that: include: A water tank, a turbine box, and an air circuit switching structure, wherein the air circuit switching structure comprises: A shell having a flow channel formed inside the shell; An air inlet and an air outlet, the air inlet and the air outlet are spaced apart on the shell and are respectively connected with two ends of the flow channel, the air inlet is used to be connected to a turbine box, the air outlet is used to be connected to a water tank, the air inlet direction of the air inlet is perpendicular to the extension direction of the flow channel, and the air outlet direction of the air outlet is perpendicular to the extension direction of the flow channel, the air inlet direction of the air inlet and the air outlet direction of the air outlet are perpendicular to each other, the inner wall of the flow channel is a sound insulation structure made of high-density material, so that part of the noise transmitted from the turbine box is reflected back to the interior of the turbine box under the front blocking of the inner wall of the flow channel, and a silencer structure is provided inside the turbine box, and the silencer structure is used to silence the noise generated inside the turbine box and the noise reflected from the air path adapter structure to the interior of the turbine box.

2. The ventilator according to claim 1, characterized in that: The air intake portion is a first sealing portion, and the first sealing portion is used for sealingly fitting with the turbine box; and / or, The air outlet portion is a second sealing portion, and the second sealing portion is used for sealingly matching with the water tank.

3. The ventilator according to claim 1, characterized in that: The air inlet portion is provided with a first opening, and the shell is provided with an air inlet port opposite to the first opening.

4. The ventilator according to claim 3, characterized in that: The air outlet portion is provided with a second opening, and the shell is provided with an air outlet opposite to the second opening.

5. The ventilator according to claim 1, characterized in that: The shell is provided with a recessed portion, and the recessed portion is used to match the outer contour of the turbine box.

6. The ventilator according to claim 1, characterized in that: The air outlet portion is provided with a first buckle position, and the shell is provided with a second buckle position that is snap-fitted with the first buckle position.

7. The ventilator according to claim 1, characterized in that: The water tank and the turbine box are respectively located on opposite sides of the air path adapter structure.

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