Air inlet chamber and breathing machine

Abstract

The utility model belongs to the technical field of medical equipment, and particularly relates to an air inlet chamber which comprises a silencing body, a first shell and a second shell. The first shell and the second shell are detachably connected, and at least one of the first shell and the second shell is provided with a concave cavity so that a closed inner cavity can be formed; the silencing body is arranged in the inner cavity, and a gas flow channel is formed in the silencing body; the first shell is provided with a gas inlet communicated with the inner cavity, the second shell is provided with a gas outlet communicated with the inner cavity, the gas inlet is communicated with the gas inlet end of the gas flow channel, and the gas outlet is communicated with the gas outlet end of the gas flow channel; the air inlet is communicated with the filter element, and the air outlet is communicated with the turbine chamber. According to the air inlet chamber and the breathing machine provided by the embodiment of the utility model, the silencing cotton is independently arranged in the cavity, so that the silencing cotton is independently arranged outside the turbine chamber, and when the silencing cotton is replaced, only the first shell and the second shell need to be disassembled to take out the silencing cotton.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to an air intake chamber and a ventilator. Background Art

[0002] When the ventilator is in working state, air flows into the inlet flow channel after being filtered by the filter element, and enters the turbine chamber after being noise-reduced by the inlet flow channel. At present, the inlet flow channel is generally arranged inside the turbine chamber, and the two form the turbine breathing module air chamber.

[0003] The existing intake air duct is usually made of silencer cotton, which ages after long-term use, so the intake air duct in the turbine chamber needs to be replaced.

[0004] However, due to the design of the built-in turbine chamber of the silencer cotton piece, when replacing the silencer cotton, the entire turbine breathing chamber module needs to be disassembled, and the maintenance steps are cumbersome. Summary of the invention

[0005] The technical problem to be solved by the utility model is: to provide an air intake chamber in view of the problem that it is inconvenient to replace the silencer cotton in the air chamber of the existing turbine breathing module.

[0006] In order to solve the above technical problems, on the one hand, the embodiment of the utility model provides an air intake chamber, including a muffler, a first shell and a second shell;

[0007] The first shell and the second shell are detachably connected, at least one of the first shell and the second shell is provided with a concave cavity, and the first shell and the second shell enclose a closed inner cavity;

[0008] The muffler is arranged in the inner cavity, and a gas flow channel is arranged in the muffler;

[0009] The first shell is provided with an air inlet connected to the inner cavity, and the second shell is provided with an air outlet connected to the inner cavity, the air inlet is connected to the air inlet end of the gas flow channel, and the air outlet is connected to the air outlet end of the gas flow channel;

[0010] The air inlet is used to be connected to the filter element of the ventilator, and the air outlet is used to be connected to the turbine chamber of the ventilator.

[0011] Optionally, a heating wire is further included, wherein the heating wire is passed through one of the first shell and the second shell, and the heating wire extends into the gas flow channel.

[0012] Optionally, a circuit board is further included, the heating wire is electrically connected to the circuit board, and the circuit board is fixed on one of the first shell and the second shell.

[0013] Optionally, it further includes a guide plate arranged at the air outlet, wherein a plurality of guide holes are arranged on the guide plate, and the central axis of the guide hole is parallel to the central axis of the air outlet.

[0014] Optionally, a gasket is further included, and the first shell and the second shell are sandwiched with the gasket, and the gasket is used for sealing between the first shell and the second shell.

[0015] Optionally, the silencer is provided with a groove running through the silencer in the thickness direction, and the two sides of the silencer in the thickness direction are respectively close to the inner wall of the first shell and the inner wall of the second shell to form the gas flow channel, and the gas flow channel is curved; the air inlet and the air outlet are located on both sides of the silencer in the thickness direction.

[0016] Optionally, flow holes are provided in the silencer, the flow holes constitute the gas flow passage, and the gas flow passage is in a wavy line shape.

[0017] Optionally, the air inlet is equipped with an air inlet pipe, and the air inlet pipe is used to communicate with a filter element of the ventilator.

[0018] Optionally, the air outlet is equipped with an air outlet pipe, which is used to connect to the turbine chamber of the ventilator, and the central axis of the air outlet pipe is parallel to the central axis of the guide hole. On the other hand, an embodiment of the utility model also provides a ventilator, including the above-mentioned air inlet chamber.

[0019] According to the air intake chamber and the ventilator of the embodiment of the utility model, the silencer cotton is placed separately in the cavity in the embodiment, and the silencer cotton is independently placed outside the turbine chamber. Therefore, when replacing the silencer cotton in the embodiment, it is only necessary to disassemble the first shell and the second shell to take out the silencer cotton, without disassembling the turbine chamber to replace the silencer cotton as in the prior art.

[0020] Moreover, the air inlet chamber of the embodiment of the utility model has the advantage of guiding the exhausted gas and reducing the occurrence of turbulence because a guide plate is provided at the air outlet.

[0021] In addition, the electric heating wire of the embodiment of the utility model can also perform high-temperature sterilization on the air, reduce the infection caused by the patient's inhaled gas containing more bacteria, and improve the air quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the air intake chamber provided by the first embodiment of the utility model;

[0023] Figure 2 It is an exploded schematic diagram of the air intake chamber provided by the first embodiment of the utility model;

[0024] Figure 3It is a schematic structural diagram of the air intake chamber provided by the first embodiment of the utility model after the second shell is removed;

[0025] Figure 4 It is a schematic diagram of the application of the air inlet chamber in the ventilator provided by the first embodiment of the utility model.

[0026] The reference numerals in the specification are as follows:

[0027] 1. First shell; 11. Air inlet pipe; 2. Second shell; 21. Air outlet pipe; 22. Concave cavity; 3. Muffler; 31. Gas flow channel; 4. Guide plate; 41. Guide hole; 5. Gasket; 6. Heating wire; 7. Circuit board;

[0028] 100, air intake chamber; 200, filter element; 300, turbine chamber. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] First embodiment

[0031] like Figure 1 and Figure 2 As shown, the air intake chamber 100 provided in the first embodiment of the utility model comprises a muffler 3, a first shell 1 and a second shell 2. The first shell 1 and the second shell 2 are detachably connected, and at least one of the first shell 1 and the second shell 2 is provided with a concave cavity 22, and the first shell 1 and the second shell 2 can form a closed inner cavity after being connected. The muffler 3 is arranged in the inner cavity, and a gas flow channel 31 is arranged in the muffler 3; the first shell 1 is provided with an air inlet connected to the inner cavity, and the second shell 2 is provided with an air outlet connected to the inner cavity, the air inlet is connected to the air inlet end of the gas flow channel 31, and the air outlet is connected to the air outlet end of the gas flow channel 31.

[0032] Reference Figure 4 The air inlet is used to connect to the filter element 200 , and the air outlet is used to connect to the turbine chamber 300 .

[0033] Specifically, in this embodiment, the silencer 3 is silencer cotton, the gas flow channel 31 is arranged in the silencer 3, the first shell 1 is in the shape of a flat plate, the concave cavity 22 is arranged on the second shell 2, and the first shell 1 covers the second shell 2. In this embodiment, the silencer cotton is placed in the cavity alone, and due to the existence of the first shell 1 and the second shell 2, the silencer cotton is independent outside the turbine chamber 300, but is connected to the turbine chamber 300 by the air outlet. Different from the design of silencer cotton built into the turbine chamber 300 in the prior art, in this embodiment, when replacing the silencer cotton, it is only necessary to disassemble the first shell 1 and the second shell 2 to take out the silencer cotton.

[0034] In this embodiment, a plurality of reinforcing ribs are further provided on the first shell 1, and the reinforcing ribs are distributed in a grid pattern on the surface of the first shell 1. Preferably, the reinforcing ribs are provided on a side of the first shell 1 away from the second shell 2. In this way, the strength of the first shell 1 is enhanced and the possibility of deformation of the first shell 1 is reduced.

[0035] In other embodiments, the reinforcing ribs are distributed on the surface of the first shell in a honeycomb shape. Regardless of the distribution method, the reinforcing ribs are strip-shaped protrusions formed by increasing the local thickness of the first shell, and the protrusions are the reinforcing ribs.

[0036] In this embodiment, the first shell 1 and the second shell 2 are detachably connected by bolts. When replacing the muffler 3, the bolts are removed, the first shell 1 and the second shell 2 are buckled apart, the muffler 3 is taken out from the inner cavity and replaced, and when the replacement is completed, the first shell 1 and the second shell 2 are closed and connected with bolts. The entire disassembly process is relatively independent, and there is no need to disassemble the turbine chamber 300.

[0037] In this embodiment, the first shell 1 is a square plate, the second shell 2 is a square box, and the sound-absorbing cotton is a square block. In other embodiments, the first shell 1 is a circular plate, the second shell 2 is a circular box, and the sound-absorbing cotton is a circular block. By analogy, the first shell 1 can also be a polygonal plate, an ellipse, etc., and the shapes of the second shell 2 and the sound-absorbing cotton are changed in the same way as the first shell 1.

[0038] Reference Figure 2 and Figure 3 In this embodiment, the air inlet chamber 100 further includes a heating wire 6 and a circuit board 7. The heating wire 6 is inserted into one of the first shell 1 and the second shell 2. In this embodiment, the heating wire 6 is inserted into the first shell 1 as an example, and the heating wire 6 penetrates into the gas flow channel 31. The circuit board 7 is electrically connected to the heating wire 6, and the circuit board 7 is fixed to the first shell 1 by screws. The heating wire 6 heats the air in the gas flow channel 31 until high-temperature sterilization is achieved to reduce the infection of the patient caused by bacteria in the air. The circuit board 7 is a PCBA board, and the circuit board 7 controls the heating wire 6 to improve the use effect of the heating wire 6.

[0039] In other embodiments, the circuit board 7 is disposed on the second housing 2, and the heating wire 6 is disposed on the first housing, or vice versa. That is, the heating wire 6 and the circuit board 7 may not be disposed on the first housing 1 or the second housing 2 together.

[0040] The electric heating wire is arranged near the outlet end of the gas flow channel 31, and the heating wire 6 sterilizes the gas that is about to flow out. Compared with the case where the heating wire 6 is arranged at the inlet end of the gas flow channel 31, although both have the same sterilization effect, the temperature of the air remains high from the time the air is heated at the inlet end until it flows out of the silencer 3, so that the temperature of the silencer 3 is also at a high level. For a long time, the aging speed of the silencer 3 increases. In this embodiment, the electric heating wire is arranged near the outlet end of the gas flow channel 31, and the air basically flows in the silencer 3 at room temperature. It is only briefly heated at the outlet end of the silencer 3 and immediately flows into the turbine chamber. The air at room temperature has little effect on the aging of the silencer 3, which has the advantages of slowing down the aging of the silencer 3 and having a relatively long life of the silencer 3.

[0041] In this embodiment, the air inlet chamber 100 also includes a guide plate 4 arranged at the air outlet, and a plurality of guide holes 41 are arranged on the guide plate 4, and the central axis of the guide hole 41 is parallel to the central axis of the air outlet. In conjunction with the accompanying drawings, when air enters the gas flow channel, the air is turbulent due to the bending of the air inlet and the gas flow channel, and because the gas flow channel in this embodiment is curved, the air is easy to form turbulence at each bend of the gas flow channel. After the air flows through the plurality of guide holes 41 on the guide plate 4, the gas is forced to flow outward in a direction parallel to the central axis of the air outlet. At this time, the flow direction of the air is consistent with the central axis of the air outlet, thereby reducing the probability of turbulence of the gas from the air outlet, so that the gas flows smoothly to the turbine chamber 300. Moreover, to a certain extent, the noise of the smoothly flowing gas is less than the noise of the turbulent gas, and it also has a certain noise reduction effect.

[0042] In this embodiment, the air inlet chamber 100 further includes a gasket 5, and the gasket 5 is sandwiched between the first shell 1 and the second shell 2. The gasket 5 is used to seal the facing surfaces of the first shell 1 and the second shell 2. The function of the gasket 5 is actually a sealing ring, and a rubber ring is generally used. The gasket 5 is annular. For the sake of convenient installation, the gasket in this embodiment uses a rubber ring with high hardness and small deformation. When installing, it is only necessary to place the gasket 5 between the first shell 1 and the second shell 2, and use the compression force of the bolts connecting the first shell 1 and the second shell 2 to deform the gasket 5, so that the gasket 5 does not need to be deliberately aligned.

[0043] In other embodiments, an annular groove is provided on the surface of the first shell 1 close to the second shell 2, and the gasket 5 is embedded in the annular groove, and the gasket 5 protrudes from the annular groove, so that after the first shell 1 and the second shell 2 are connected, the surface of the gasket 5 protruding from the annular groove contacts the surface of the second shell 2 close to the first shell 1. The gasket 5 can be easily installed by personnel through this installation method. Moreover, due to the presence of the annular groove, the gasket 5 can only deform toward the second shell 2, thereby limiting any deformation of the gasket 5 and reducing the gasket 5 from falling out from between the first shell 1 and the second shell 2.

[0044] In this embodiment, a groove is provided on the muffler 3 that runs through the thickness direction thereof, and the two sides of the muffler 3 in the thickness direction are respectively close to the inner wall of the first shell 1 and the inner wall of the second shell 2 to form a gas flow channel 31, and the path of the gas flow channel 31 is curved; the air inlet and the air outlet are located on both sides of the thickness direction of the muffler 3. The inner wall of the first shell 1 and the inner wall of the second shell 2 are provided with a groove of the muffler 3, so that the groove forms the gas flow channel 31. Since the groove runs through the thickness direction of the muffler 3, the volume of the groove is increased, thereby increasing the gas flow rate. Moreover, the gas flow channel 31 of the present application is easy to process and obtain, and the cost is low.

[0045] It is worth mentioning that the gas flow channel 31 in this embodiment is smoothed at each bend in its path, that is, each bend is an arc transition, so that the gas flows smoothly along the gas flow channel 31 at the bend.

[0046] In this embodiment, the air inlet is equipped with an air inlet pipe 11, which is used to communicate with the filter element 200. The air outlet is equipped with an air outlet pipe 21, which is used to communicate with the turbine chamber 300, and the central axis of the air outlet pipe 21 is parallel to the central axis of the guide hole. The air inlet pipe 11 and the air outlet pipe 21 are connected for convenience. In other embodiments, the air inlet pipe 11 and the air outlet pipe 21 can also be replaced by quick-connect connectors.

[0047] In this embodiment, the air inlet pipe 11 and the air outlet pipe 21 are both hard pipes, the air inlet pipe 11 and the first housing 1 are integrally injection-molded, and the air outlet pipe 21 and the second housing 2 are integrally injection-molded. The first housing and the second housing are both injection-molded bodies.

[0048] In other embodiments, the first shell 1 and the second shell 2 are both metal shells, and the air inlet pipe 11 is a metal pipe welded to the first shell 1; similarly, the air outlet pipe 21 is a metal pipe and is also fixed to the second shell 2 by welding.

[0049] The guide plate 4 is detachably mounted in the second housing 2. In this embodiment, the guide plate 4 is embedded in the air outlet pipe 21. When the guide plate 4 is replaced, it only needs to be removed from the air outlet pipe 21. The guide plate 4 can also filter large pieces of detached objects of the aged silencer 3 to a certain extent, and can play a certain filtering role.

[0050] Second embodiment

[0051] The air inlet chamber of the second embodiment of the utility model is different from the first embodiment in that a flow hole is provided in the silencer, and the flow hole constitutes a gas flow channel 31, and the path of the gas flow channel 31 is in a wavy line shape. In this embodiment, the flow hole does not need to penetrate the thickness direction of the silencer, so that the gas in the gas flow channel is completely wrapped by the silencer, thereby improving the noise reduction effect.

[0052] For the purpose of easy processing, the silencer in this embodiment can be formed by splicing two silencer cotton blocks, and arc grooves are arranged on the facing surfaces of the two silencer cotton blocks. When the two silencer cotton blocks are spliced ​​into the silencer, the arc grooves on the two silencer cotton blocks are spliced ​​into flow holes, that is, into gas flow channels 31. The silencer spliced ​​into a whole is then placed in the inner cavity and fixed so that the silencer is firmly in the inner cavity.

[0053] Furthermore, in order to facilitate the placement of the silencer, the two silencer cotton blocks can be fixed by means of glue or the like when splicing them, so that the two silencer cotton blocks are stably spliced ​​into a whole.

[0054] Third embodiment

[0055] Reference Figure 4 The third embodiment of the utility model provides a respirator, comprising an air inlet chamber 100 as described in any one of the above embodiments, the air inlet of the air inlet chamber 100 is connected to the filter element 200, and the air outlet is connected to the turbine chamber 300.

[0056] In this embodiment, when replacing the air intake chamber 100, it is only necessary to dismantle the connection between the filter element 200 and the air intake chamber 100, dismantle the first housing 1, and then replace the muffler 3, and then install the first housing 1, and connect the filter element 200 and the air intake chamber 100. It can be seen that the replacement process is simple and the later maintenance is convenient.

[0057] Similarly, the connection between the turbine chamber 300 and the air intake chamber 100 is removed, and then the second shell 2 is removed, and the silencer 2 is replaced. Thereafter, the second shell 2 is installed, and the turbine chamber and the air intake chamber 100 are connected.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air intake chamber, characterized in that: It includes a muffler, a first shell and a second shell; The first shell and the second shell are detachably connected, at least one of the first shell and the second shell is provided with a concave cavity, and the first shell and the second shell enclose a closed inner cavity; The muffler is arranged in the inner cavity, and a gas flow channel is arranged in the muffler; The first shell is provided with an air inlet connected to the inner cavity, and the second shell is provided with an air outlet connected to the inner cavity, the air inlet is connected to the air inlet end of the gas flow channel, and the air outlet is connected to the air outlet end of the gas flow channel; The air inlet is used to be connected to the filter element of the ventilator, and the air outlet is used to be connected to the turbine chamber of the ventilator.

2. The air intake chamber according to claim 1, characterized in that: It also includes a heating wire, which is inserted into one of the first shell and the second shell, and extends into the gas flow channel.

3. The air intake chamber according to claim 2, characterized in that: It also includes a circuit board, the heating wire is electrically connected to the circuit board, and the circuit board is fixed on one of the first shell and the second shell.

4. The air intake chamber according to claim 1, characterized in that: It also includes a guide plate arranged at the air outlet, wherein a plurality of guide holes are arranged on the guide plate, and the central axis of the guide hole is parallel to the central axis of the air outlet.

5. The air intake chamber according to claim 1, characterized in that: A gasket is also included. The first shell and the second shell sandwich the gasket, and the gasket is used for sealing between the first shell and the second shell.

6. The air intake chamber according to claim 1, characterized in that: The silencer is provided with a groove running through the silencer in the thickness direction, and the two sides of the silencer in the thickness direction are respectively in close contact with the inner wall of the first shell and the inner wall of the second shell to form the gas flow channel, and the gas flow channel is curved; the air inlet and the air outlet are located on both sides of the silencer in the thickness direction.

7. The air intake chamber according to claim 1, characterized in that: The silencer is provided with flow holes, the flow holes constitute the gas flow channel, and the gas flow channel is in a wavy line shape.

8. The air intake chamber according to claim 1, characterized in that: The air inlet is equipped with an air inlet pipe, and the air inlet pipe is used to communicate with the filter element of the respirator.

9. The air intake chamber according to claim 4, characterized in that: The air outlet is equipped with an air outlet pipe, which is used to communicate with the turbine chamber of the ventilator. The central axis of the air outlet pipe is parallel to the central axis of the guide hole.

10. A ventilator, characterized in that: Comprising the air intake chamber described in any one of claims 1-9.

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