Turbine shell assembly for noninvasive ventilator

Abstract

The utility model discloses a turbine shell assembly for a noninvasive ventilator, which belongs to the technical field of ventilators, and is characterized in that strip-shaped flexible glue is attached to the bottom of an upper shell, an upper shell fan bin is fixedly arranged in the upper shell, a fan is arranged in the upper shell fan bin, and the lower shell fan bin is fixedly arranged in the upper shell. An upper shell fan bin air inlet is formed in one side of the upper shell fan bin, and the input end of the fan corresponds to the upper shell fan bin air inlet; the lower shell comprises a lower shell draught fan bin, the lower shell draught fan bin is correspondingly connected with the lower portion of the draught fan in a clamped mode, a turbine shell air outlet is formed in the outer side of the lower shell draught fan bin, the turbine shell air outlet is located in the lower shell and provided with a sealing ring positioning connector, and the sealing ring positioning connector corresponds to the output end of the draught fan. A sealing ring is arranged between the sealing ring positioning connector and the fan in a communicating mode, a noise reduction cavity is formed in the position, located at the bottom of the fan, of the middle of the lower shell fan bin, and a second noise reduction sponge is arranged in the noise reduction cavity and abuts against the bottom of the fan.

Description

Technical Field

[0001] The utility model relates to the field of ventilators, and in particular to a turbine housing assembly for a non-invasive ventilator. Background Art

[0002] As people become more recognized and familiar with non-invasive ventilators, their role in clinical applications is becoming increasingly important. A non-invasive ventilator is a respiratory support device that does not require endotracheal intubation or tracheotomy. It connects to the patient through an interface such as a mask or nasal mask, providing positive pressure ventilation to help improve ventilation and oxygenation.

[0003] The driving pressure in the existing non-invasive ventilator is generated by the turbine housing and the fan inside it. However, the existing non-invasive ventilator has a complex turbine housing sealing structure and a cumbersome fan limiting method, which leads to unreliable outlet sealing, easy oxygen concentration loss and unstable fan operation.

[0004] How to invent a turbine housing assembly for a non-invasive ventilator to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a turbine housing assembly for a non-invasive ventilator, aiming to improve the problems of the existing non-invasive ventilator turbine housing with complex sealing structure, cumbersome fan limiting method, and unreliable air outlet sealing.

[0006] The utility model is implemented as follows: a turbine shell assembly for a non-invasive ventilator, comprising

[0007] The upper shell includes a strip of soft rubber, which is attached to the bottom of the upper shell. An upper shell fan hopper is fixedly installed inside the upper shell. A fan is installed inside the upper shell fan hopper. An upper shell fan hopper air inlet is opened on one side of the upper shell fan hopper. The input end of the fan is corresponding to the air inlet of the upper shell fan hopper.

[0008] The lower shell, the upper part of the lower shell is fitted correspondingly with the lower bottom surface of the upper shell, the lower shell includes a lower shell fan hopper, the lower shell fan hopper is correspondingly snap-fitted with the lower part of the fan, a turbine shell air outlet is provided on the outside of the lower shell fan hopper, the turbine shell air outlet is located inside the lower shell and is provided with a sealing ring positioning interface, the sealing ring positioning interface is provided correspondingly to the output end of the fan, a sealing ring is provided in communication between the sealing ring positioning interface and the fan, the middle part of the lower shell fan hopper is located at the bottom of the fan and a silencer cavity is provided, a second noise reduction sponge is provided in the silencer cavity, and the second noise reduction sponge abuts against the bottom of the fan.

[0009] In a preferred technical solution of the present invention, the connection between the upper shell and the lower shell is set as a step, the strip-shaped soft rubber is set at the steps of the upper shell and the lower shell, and the strip-shaped soft rubber is respectively in contact with the upper shell and the lower shell.

[0010] In a preferred technical solution of the present invention, the outer wall of the upper shell is fixedly connected with a positioning column, and the outer wall of the lower shell is fixedly connected with a positioning hole. There are multiple groups of positioning columns and positioning holes respectively, and the multiple groups of positioning columns and positioning holes are connected by screw locking.

[0011] In a preferred technical solution of the present invention, a rubber column elastomer is provided on the inner bottom of the upper shell, and the rubber column elastomer is located in the upper shell fan compartment. The rubber column elastomer is in corresponding limiting contact with the top of the fan, and the inner wall of the upper shell fan compartment is provided with a wave rib elastomer, and the wave rib elastomer is in limiting contact with the outer wall of the fan.

[0012] In a preferred technical solution of the present invention, a first noise reduction sponge is arranged between the outside of the upper shell fan compartment and the inner wall of the upper shell, and the first noise reduction sponge is located at the back of the output end of the fan, and a third noise reduction sponge is arranged in the gap between the second noise reduction sponge and the lower shell fan compartment, and the top of the third noise reduction sponge is in contact with the outer ring of the fan, and a fourth noise reduction sponge is arranged between the outside of the lower shell fan compartment and the inner wall of the lower shell, and the fourth noise reduction sponge is located at the back of the fan and corresponds to the first noise reduction sponge.

[0013] In a preferred technical solution of the present invention, the top of the upper shell is connected to a high-pressure oxygen connector, one side of the high-pressure oxygen connector is connected to a low-pressure oxygen connector, the other end of the high-pressure oxygen connector is connected to the high-pressure air intake assembly of the non-invasive ventilator, and the other end of the low-pressure oxygen connector is connected to the low-pressure oxygen supply end outside the equipment, and a high-pressure oxygen connector plug is provided inside the high-pressure oxygen connector.

[0014] In a preferred technical solution of the present invention, a lower shell fan bin air inlet is provided on the same side of the lower shell as the upper shell fan bin air inlet, and the lower shell fan bin air inlet is located below the upper shell fan bin air inlet.

[0015] In a preferred technical solution of the present invention, an upper shell air duct is provided inside the upper shell, and the upper shell air duct is connected to the air inlet of the upper shell fan compartment; a lower shell air duct is provided inside the lower shell, and the lower shell air duct is connected to the air inlet of the lower shell fan compartment.

[0016] In a preferred technical solution of the present invention, a groove is provided between the upper shell and the lower shell, the groove passes through the upper shell, the lower shell and the fan compartment of the lower shell, and a fan wire seat is clamped in the groove.

[0017] In a preferred technical solution of the present invention, a through hole is provided at the bottom of the lower shell on one side of the lower shell air passage, and a turbine air intake sealing ring is provided outside the through hole.

[0018] The beneficial effects of the present invention are as follows: the turbine housing assembly for a non-invasive ventilator obtained by the present invention through the above-mentioned design is coated with glue (such as TPE, silicone and other soft elastomers) at multiple locations through the upper shell during use. This not only solves the sealing problem between the upper shell and the lower shell of the turbine housing, but also effectively limits the displacement of the fan in all directions of X, Y, and Z through the provided wave rib elastomer and the soft elastomer column evenly distributed on the top. The soft elastomer part used to connect the fan outlet to the turbine housing adopts an axial sealing method, which effectively solves the problem of air leakage caused by the difference in mold parts. By designing the fan rotor at the bottom and the fan volute and fan blades at the top, the center of gravity of the fan is lowered and the operation is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural diagram provided by an embodiment of the present utility model;

[0021] Figure 2 A schematic diagram of an explosion structure provided for an embodiment of the present utility model;

[0022] Figure 3 A schematic diagram of the internal structure of the upper shell provided in an embodiment of the present utility model;

[0023] Figure 4 A schematic diagram of the top view of the upper shell provided in an embodiment of the utility model;

[0024] Figure 5 A schematic diagram of the internal structure of the lower shell provided in an embodiment of the present utility model;

[0025] Figure 6 A schematic diagram of the wind structure installed inside the lower shell provided by the embodiment of the utility model;

[0026] Figure 7 A schematic diagram of the internal structure of one side provided by an embodiment of the utility model;

[0027] Figure 8A schematic diagram of a side cross-sectional structure provided for an embodiment of the present utility model.

[0028] In the figure: 1. Upper shell; 101. Strip soft rubber; 102. Wave rib elastomer; 103. Rubber column elastomer; 104. Upper shell fan compartment air inlet; 105. Upper shell fan compartment; 106. Upper shell air duct; 107. Positioning column; 108. Low-pressure oxygen connector; 109. High-pressure oxygen connector; 2. First noise reduction sponge; 3. Fan; 4. Second noise reduction sponge; 5. Third noise reduction sponge; 6. Fourth noise reduction sponge; 7. Fan wire seat; 8. Turbine air inlet sealing ring; 9. Lower shell; 901. Positioning hole; 902. Silencer cavity; 903. Lower shell air duct; 904. Lower shell fan compartment air inlet; 905. Sealing ring positioning interface; 906. Lower shell fan compartment; 907. Turbine shell air outlet; 10. Sealing ring; 11. High-pressure oxygen connector plug. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1 and Figure 2 The utility model provides a technical solution: a turbine shell assembly for a non-invasive ventilator, comprising

[0031] The upper shell 1 includes a strip of soft rubber 101, which is fitted on the bottom of the upper shell 1. An upper shell fan compartment 105 is fixedly provided inside the upper shell 1. A fan 3 is provided inside the upper shell fan compartment 105. An upper shell fan compartment air inlet 104 is opened on one side of the upper shell fan compartment 105. The input end of the fan 3 is correspondingly provided with the upper shell fan compartment air inlet 104.

[0032] The lower shell 9, the upper part of the lower shell 9 corresponds to and fits with the lower bottom surface of the upper shell 1, the lower shell 9 includes a lower shell fan compartment 906, the lower shell fan compartment 906 is correspondingly snap-fitted with the lower part of the fan 3, and a turbine shell air outlet 907 is provided on the outer side of the lower shell fan compartment 906. The turbine shell air outlet 907 is located inside the lower shell 9 and is provided with a sealing ring positioning interface 905. The sealing ring positioning interface 905 is corresponding to the output end of the fan 3. A sealing ring 10 is provided between the sealing ring positioning interface 905 and the fan 3. The middle part of the lower shell fan compartment 906 is located at the bottom of the fan 3 and is provided with a silencer cavity 902. A second noise reduction sponge 4 is provided in the silencer cavity 902, and the second noise reduction sponge 4 is in contact with the bottom of the fan 3.

[0033] See also Figure 3 and Figure 5 The connection points between the upper shell 1 and the lower shell 9 are both stepped, and the strip-shaped soft glue 101 is set at the steps of the upper shell 1 and the lower shell 9. The strip-shaped soft glue 101 is respectively in contact with the upper shell 1 and the lower shell 9. The strip-shaped soft glue 101 increases the sealing of the connection between the upper shell 1 and the lower shell 9.

[0034] See also Figures 3 to 8 The outer wall of the upper shell 1 is fixedly connected with a positioning column 107, and the outer wall of the lower shell 9 is fixedly connected with a positioning hole 901. There are multiple sets of positioning columns 107 and positioning holes 901 respectively. The multiple sets of positioning columns 107 and positioning holes 901 are connected by screws to fix the upper shell 1 and the lower shell 9. The inner bottom of the upper shell 1 is provided with a rubber column elastic body 103. The rubber column elastic body 103 is located in the upper shell fan compartment 105. The rubber column elastic body 103 is correspondingly abutted with the top of the fan 3. The inner wall of the upper shell fan compartment 105 is provided with a wave rib elastic body 102. The wave rib elastic body 102 is abutted with the outer wall of the fan 3 to limit the fan 3 and prevent the fan 3 from excessive displacement.

[0035] A first noise reduction sponge 2 is arranged between the outside of the upper shell fan compartment 105 and the inner wall of the upper shell 1. The first noise reduction sponge 2 is located at the back of the output end of the fan 3. A third noise reduction sponge 5 is arranged in the gap between the second noise reduction sponge 4 and the lower shell fan compartment 906. The top of the third noise reduction sponge 5 is in contact with the outer ring of the fan 3. A fourth noise reduction sponge 6 is arranged between the outside of the lower shell fan compartment 906 and the inner wall of the lower shell 9. The fourth noise reduction sponge 6 is located at the back of the fan 3 and corresponds to the first noise reduction sponge 2. The first noise reduction sponge 2, the second noise reduction sponge 4, the third noise reduction sponge 5 and the fourth noise reduction sponge 6 greatly reduce the noise of the fan 3. The third noise reduction sponge 5 is arranged in the silencer cavity 902. The third noise reduction sponge 5 is at the bottom of the lower shell air duct 903. The third noise reduction sponge 5 is below the fourth noise reduction sponge 6 and is located at the bottom of the lower shell air duct 903.

[0036] The top of the upper shell 1 is connected to a high-pressure oxygen connector 109, one side of which is connected to a low-pressure oxygen connector 108. The other end of the high-pressure oxygen connector 109 is connected to the high-pressure air inlet assembly of the non-invasive ventilator, and the other end of the low-pressure oxygen connector 108 is connected to the low-pressure oxygen supply end outside the device. The interior of the high-pressure oxygen connector 109 is equipped with a high-pressure oxygen connector plug 11, which is used as needed. The lower shell 9 is provided with a lower shell fan compartment air inlet 904 on the same side as the upper shell fan compartment air inlet 104. The lower shell fan compartment air inlet 904 is located below the upper shell fan compartment air inlet 104.

[0037] The upper shell 1 is internally provided with an upper shell air duct 106, which communicates with the upper shell fan compartment air inlet 104. The lower shell 9 is internally provided with a lower shell air duct 903, which communicates with the lower shell fan compartment air inlet 904. A groove is defined between the upper shell 1 and the lower shell 9, extending through the upper shell 1, the lower shell 9, and the lower shell fan compartment 906. The fan cable holder 7 is secured within the groove. The bottom of the lower shell 9 is provided with a through hole on one side of the lower shell air duct 903, and a turbine air inlet seal 8 is located outside the through hole.

[0038] Working Principle: Fan 3 is installed within upper shell fan compartment 105 and lower shell fan compartment 906, formed by upper shell 1 and lower shell 9. The wave rib elastic body 102 and rubber column elastic body 103 in upper shell 1 work together to fully limit the fan 3 in the X, Y, and Z directions, ensuring that the fan 3 does not move excessively during transportation, handling, and speed-changing operation, thereby maintaining operational stability and reliability.

[0039] The gas is delivered through lower housing air duct 903 and upper housing air duct 106 to upper housing fan compartment air inlet 104 and lower housing fan compartment air inlet 904, and then enters upper housing fan compartment 105 and lower housing fan compartment 906 inside the turbine housing. Upon receiving a control signal, fan 3 starts, compressing the gas and delivering it to turbine housing outlet 907, ultimately supplying the inhalation component of the non-invasive ventilator.

[0040] The turbine air inlet sealing ring 8 ensures that the gas will not leak when entering the turbine housing, while the sealing ring 10 at the air outlet of the fan 3 adopts an axial sealing design, which can adapt to the differences in mold parts, effectively prevent gas leakage at the air outlet of the fan 3, and improve oxygen utilization.

[0041] The turbine housing assembly provides a high-pressure oxygen connector 109 and a low-pressure oxygen connector 108 to adapt to the needs of different types of non-invasive ventilators. When the device does not need high-pressure oxygen, it can be blocked by the high-pressure oxygen connector plug 11 to avoid wasting oxygen.

[0042] The upper shell 1 and the lower shell 9 are precisely assembled by the positioning posts 107 and the positioning holes 901, ensuring the stability of the overall structure and function of the turbine shell assembly. At the same time, the installation of the strip soft rubber 101 enhances the sealing between the upper shell 1 and the lower shell 9, preventing gas leakage.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A turbine housing assembly for a non-invasive ventilator, characterized in that: include The upper shell includes a strip of soft rubber, which is attached to the bottom of the upper shell. An upper shell fan hopper is fixedly installed inside the upper shell. A fan is installed inside the upper shell fan hopper. An upper shell fan hopper air inlet is opened on one side of the upper shell fan hopper. The input end of the fan is corresponding to the air inlet of the upper shell fan hopper. The lower shell, the upper part of the lower shell is fitted correspondingly with the lower bottom surface of the upper shell, the lower shell includes a lower shell fan hopper, the lower shell fan hopper is correspondingly snap-fitted with the lower part of the fan, a turbine shell air outlet is provided on the outside of the lower shell fan hopper, the turbine shell air outlet is located inside the lower shell and is provided with a sealing ring positioning interface, the sealing ring positioning interface is provided correspondingly to the output end of the fan, a sealing ring is provided in communication between the sealing ring positioning interface and the fan, the middle part of the lower shell fan hopper is located at the bottom of the fan and a silencer cavity is provided, a second noise reduction sponge is provided in the silencer cavity, and the second noise reduction sponge abuts against the bottom of the fan.

2. A turbine housing assembly for a non-invasive ventilator according to claim 1, characterized in that: The connection points between the upper shell and the lower shell are both provided with steps, and the strip-shaped soft glue is provided at the steps of the upper shell and the lower shell, and the strip-shaped soft glue abuts against the upper shell and the lower shell respectively.

3. A turbine housing assembly for a non-invasive ventilator according to claim 1, characterized in that: The outer wall of the upper shell is fixedly connected with a positioning column, and the outer wall of the lower shell is fixedly connected with a positioning hole. There are multiple groups of positioning columns and positioning holes respectively, and the multiple groups of positioning columns and positioning holes are fastened and connected by screws.

4. A turbine housing assembly for a non-invasive ventilator according to claim 1, characterized in that: A rubber column elastomer is provided at the inner bottom of the upper shell, and the rubber column elastomer is located in the upper shell fan compartment. The rubber column elastomer is in limited contact with the top of the fan. A wave rib elastomer is provided on the inner wall of the upper shell fan compartment, and the wave rib elastomer is in limited contact with the outer wall of the fan.

5. The turbine housing assembly for a non-invasive ventilator according to claim 1, characterized in that: A first noise reduction sponge is arranged between the outside of the upper shell fan compartment and the inner wall of the upper shell, and the first noise reduction sponge is located at the back of the output end of the fan. A third noise reduction sponge is arranged in the gap between the second noise reduction sponge and the lower shell fan compartment, and the top of the third noise reduction sponge abuts against the outer ring of the fan. A fourth noise reduction sponge is arranged between the outside of the lower shell fan compartment and the inner wall of the lower shell, and the fourth noise reduction sponge is located at the back of the fan and corresponds to the first noise reduction sponge.

6. The turbine housing assembly for a non-invasive ventilator according to claim 1, characterized in that: The top of the upper shell is connected to a high-pressure oxygen connector, one side of the high-pressure oxygen connector is connected to a low-pressure oxygen connector, the other end of the high-pressure oxygen connector is connected to the high-pressure air intake assembly of the non-invasive ventilator, and the other end of the low-pressure oxygen connector is connected to the low-pressure oxygen supply end outside the equipment. A high-pressure oxygen connector plug is provided inside the high-pressure oxygen connector.

7. A turbine housing assembly for a non-invasive ventilator according to claim 1, characterized in that: The lower shell is provided with a lower shell fan bin air inlet on the same side as the upper shell fan bin air inlet, and the lower shell fan bin air inlet is located below the upper shell fan bin air inlet.

8. A turbine housing assembly for a non-invasive ventilator according to claim 7, characterized in that: An upper shell air duct is provided inside the upper shell, and the upper shell air duct is communicated with the upper shell fan compartment air inlet. A lower shell air duct is provided inside the lower shell, and the lower shell air duct is communicated with the lower shell fan compartment air inlet.

9. The turbine housing assembly for a non-invasive ventilator according to claim 1, characterized in that: A groove is provided between the upper shell and the lower shell, the groove passes through the upper shell, the lower shell and the fan compartment of the lower shell, and a fan wire seat is clamped in the groove.

10. The turbine housing assembly for a non-invasive ventilator according to claim 8, characterized in that: A through hole is provided at the bottom of the lower shell on one side of the lower shell air passage, and a turbine air intake sealing ring is provided outside the through hole.

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