Noninvasive positive pressure breathing machine

Abstract

The utility model relates to the technical field of breathing machines, in particular to a non-invasive positive pressure breathing machine which comprises a shell, a fan assembly, a water tank assembly, a sealing assembly and a heating assembly, and the water tank assembly comprises a water tank upper cover, a water tank, a water tank side plate, a water tank buckle, a water tank upper cover sealing ring and a water tank sealing ring. The sealing assembly can enable the fan assembly and the water tank assembly to form effective sealing, the water tank upper cover is provided with a groove, the surface of the groove is smooth, the groove is in interference fit with the water tank upper cover sealing ring, and similarly, a groove with the smooth surface is designed in the upper portion of the water tank and used for containing the water tank sealing ring. The water tank upper cover sealing ring and the water tank sealing ring are extruded, the position is fixed through the water tank buckle, and therefore the sealing effect is achieved, the two flexible materials avoid gas leakage caused by gaps generated under the condition of unbalanced pressure, and gas leakage and leakage of cooled water are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilators, in particular to a non-invasive positive pressure ventilator. Background Art

[0002] A ventilator is a critical medical device used to support a patient's respiratory function, especially in critical care and emergency situations. Although ventilators have made great technological progress, there are still some potential defects and challenges.

[0003] The existing non-invasive positive pressure ventilator mainly includes a shell, a fan assembly, a water tank assembly and multiple functional components. The fan assembly is used to drive the airflow to the water tank assembly, and mix with the water vapor generated by the water tank assembly to be transported to the mask assigned to the patient.

[0004] However, after cooling, water vapor will slowly penetrate through the weak seals, causing air leakage. Utility Model Content

[0005] The utility model aims to provide a non-invasive positive pressure ventilator, which solves the problem that when the existing non-invasive positive pressure ventilator is used, water vapor will slowly penetrate out from the weak sealing point after cooling, thereby causing air leakage.

[0006] To achieve the above-mentioned purpose, the utility model provides a non-invasive positive pressure ventilator, comprising a housing, a fan assembly, a water tank assembly, a sealing assembly and a heating assembly;

[0007] The fan assembly, the water tank assembly, the sealing assembly and the heating assembly are respectively located inside the shell, the water tank assembly comprises a water tank cover, a water tank, a water tank side plate, a water tank buckle, a water tank cover sealing ring and a water tank sealing ring, the water tank cover is interference fit with the water tank cover sealing ring, the water tank sealing ring is interference fit with the water tank and is located above the water tank, one side of the water tank buckle is rotatably connected to the water tank, the other side of the water tank buckle is engaged with the water tank cover, the water tank side plate is detachably connected to the water tank and is located on the side wall of the water tank, the heating assembly is located at the bottom of the water tank, and the fan assembly is connected to the water tank through the sealing assembly.

[0008] Among them, the fan assembly includes a fan upper cover plate, a fan casing, a fan lower cover plate, a pressure difference sensor, a sensor sealing soft glue and a fan air outlet sealing soft glue, the fan upper cover plate is detachably connected to the fan casing and is located at the top of the fan casing; the fan lower cover plate is detachably connected to the fan casing and is located at the bottom of the fan casing; the pressure difference sensor is connected to the fan casing, and the sensor sealing soft glue is located between the pressure difference sensor and the fan casing; the fan air outlet sealing soft glue is connected to the fan casing and is located on the side wall of the fan casing.

[0009] Wherein, the fan assembly also includes a partition, which is detachably connected to the fan air outlet sealing soft rubber and is located on the outside of the fan air outlet sealing soft rubber.

[0010] Among them, the sealing assembly includes a first sealing block, a second sealing block, a first soft glue and a second soft glue, the first sealing block is respectively connected with the fan outlet sealing soft glue and the water tank; the second soft glue is embedded in the first sealing block and connected with the water tank, the second sealing block is detachably connected to the first sealing block and connected with the water tank upper cover, the first soft glue is embedded in the second sealing block and connected with the water tank upper cover.

[0011] Wherein, the heating assembly comprises a heating plate, a spring and a bottom cover, wherein the heating plate is located at the bottom of the water tank; and the two ends of the spring are respectively connected to the heating plate and the bottom cover.

[0012] Wherein, the outer shell includes a front cover shell, a rear cover shell, a tempered glass panel, a switch module and a rotary encoder, the front cover shell is detachably connected to the rear cover shell; the switch module is detachably connected to the rear cover shell and is located on the top of the rear cover shell; the tempered glass panel is adhered to the front cover shell and is located on the surface wall of the front cover shell; the rotary encoder is connected to the tempered glass panel; the rear cover shell is detachably connected to the partition and is located on the outside of the partition.

[0013] The utility model discloses a non-invasive positive pressure ventilator, wherein the fan assembly has an air inlet, a pressure reducing grille, a sealing ring, and an air outlet. The fan assembly is designed with the partition plate for separating the fan assembly from the water tank assembly. The fan assembly and the water tank assembly are detachably combined into a sealed whole through the sealing assembly. The sealing assembly is connected to the fan by being mounted on the partition plate. A circle of sealing bosses is provided at the contact point for squeezing the soft sealing glue of the fan air outlet to achieve a sealing effect. The sealing is also performed by squeezing glue at the joint with the water tank assembly, and the elastic buckle above the water tank side plate of the water tank assembly is used to fasten the rear The cover fixes the position so that the component remains in an extruded state, and there will be no deviation when the water tank is pulled out. The sealing assembly can form an effective seal between the fan assembly and the water tank assembly. The water tank cover is designed with a groove with a smooth surface, which forms an interference fit with the water tank cover sealing ring. Similarly, a smooth groove is also designed above the water tank for placing the water tank sealing ring. The water tank cover sealing ring is squeezed with the water tank sealing ring and fixed in position with the water tank buckle, so as to achieve a sealing effect. The two flexible materials avoid gas leakage caused by gaps generated in the case of uneven pressure, prevent air leakage and prevent water from leaking out after cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0015] Figure 1 It is a structural exploded view of the fan assembly of the utility model.

[0016] Figure 2 It is a structural exploded view of the water tank assembly of the utility model.

[0017] Figure 3 It is a structural exploded view of the sealing assembly of the utility model.

[0018] Figure 4 It is a structural exploded view of the heating component of the utility model.

[0019] Figure 5 It is a structural exploded view of the shell of the utility model.

[0020] Figure 6 It is a structural exploded view of the non-invasive positive pressure ventilator of the utility model.

[0021] In the figure: 1- fan assembly, 2- water tank assembly, 3- sealing assembly, 4- shell, 5- heating assembly, 6- partition, 101- fan upper cover, 102- fan shell, 103- fan lower cover, 104- fan outlet sealing soft rubber, 105- differential pressure sensor, 106- sensor sealing soft rubber, 201- water tank upper cover, 202- water tank, 203- water tank side panel, 204- water tank buckle, 205-water tank upper cover sealing ring, 206-water tank sealing ring, 301-first sealing block, 302-second sealing block, 303-first soft glue, 304-second soft glue, 401-front cover, 402-rear cover, 403-switch module, 405-tempered glass panel, 406-rotary encoder, 501-heating plate, 502-spring, 503-bottom cover, 3011-sealing block air outlet. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0023] See also Figures 1 to 6 ,in, Figure 1 It is a structural exploded view of the fan assembly 1 of the utility model. Figure 2 It is a structural exploded view of the water tank assembly 2 of the utility model. Figure 3 It is a structural exploded view of the sealing assembly 3 of the utility model. Figure 4 It is a structural exploded view of the heating assembly 5 of the present invention. Figure 5 It is a structural exploded view of the housing 4 of the present utility model. Figure 6 It is a structural exploded view of the non-invasive positive pressure ventilator of the utility model. The utility model provides a non-invasive positive pressure ventilator: comprising a shell 4, a fan assembly 1, a water tank assembly 2, a sealing assembly 3 and a heating assembly 5, wherein the water tank assembly 2 comprises a water tank upper cover 201, a water tank 202, a water tank side plate 203, a water tank buckle 204, a water tank upper cover sealing ring 205 and a water tank sealing ring 206, the fan assembly 1 comprises a fan upper cover plate 101, a fan shell 102, a fan lower cover plate 103, a pressure difference sensor 105, a sensor sealing soft glue 106, a fan air outlet sealing soft glue 104 and a partition 6, the sealing assembly 3 comprises a first sealing block 301, a second sealing block 302, a first soft glue 303 and a second soft glue 304, the heating assembly 5 comprises a heating plate 501, a spring 502 and a bottom cover 503, and the shell 4 comprises a front cover shell 401, a rear cover shell 402, a tempered glass panel 405, a switch module 403 and a rotary encoder 406.

[0024] According to this specific embodiment, the fan assembly 1, the water tank assembly 2, the sealing assembly 3 and the heating assembly 5 are respectively located inside the outer shell 4, the water tank cover 201 is interference fit with the water tank cover sealing ring 205, the water tank sealing ring 206 is interference fit with the water tank 202 and is located above the water tank 202, one side of the water tank buckle 204 is rotatably connected to the water tank 202, and the other side of the water tank buckle 204 is engaged with the water tank cover 201, the water tank side panel 203 is detachably connected to the water tank 202 and is located on the side wall of the water tank 202, the heating assembly 5 is located at the bottom of the water tank 202, and the fan assembly 1 is connected to the water tank 202 through the sealing assembly 3.

[0025] The water tank assembly 2 is installed inside the housing 4, and is composed of the water tank cover 201, the water tank 202, the water tank side plate 203, and the water tank buckle 204. The water tank cover 201 is designed with a groove, and the groove surface is smooth, forming an interference fit with the water tank cover sealing ring 205. Similarly, a smooth groove is also designed above the water tank 202 for placing the water tank sealing ring 206, which is squeezed by the water tank cover sealing ring 205 and the water tank sealing ring 206 and fixed in place by the water tank buckle 204. The two flexible materials avoid gas leakage caused by gaps generated when the pressure is uneven. A guide groove is designed on the side of the water tank 202, and the water tank assembly 2 can be accurately positioned when it is pulled out. The air inlet is set on the water tank 202, and the sealing assembly 3 is connected to allow gas to enter the water tank 202. An air outlet is provided on the water tank upper cover 201. The gas heats the volatilized water vapor in the water tank 202, and the water vapor is blown out from the air outlet of the water tank upper cover 201 to achieve the purpose of humidification.

[0026] Among them, the fan upper cover plate 101 is detachably connected to the fan casing 102 and is located at the top of the fan casing 102; the fan lower cover plate 103 is detachably connected to the fan casing 102 and is located at the bottom of the fan casing 102; the differential pressure sensor 105 is connected to the fan casing 102, and the sensor sealing soft glue 106 is located between the differential pressure sensor 105 and the fan casing 102; the fan air outlet sealing soft glue 104 is connected to the fan casing 102 and is located on the side wall of the fan casing 102.

[0027] The fan assembly 1 is inside the housing 4, and is composed of the fan upper cover 101, the fan housing 102, and the fan lower cover 103, and a sealing effect is achieved by squeezing the flexible materials between them. The fan assembly 1 is provided with an air inlet and an air outlet at the fan housing 102. The sensor sealing soft glue 106 is designed at the joint between the differential pressure sensor 105 and the fan housing 102, and a sealing boss is designed at the contact with the fan housing 102 to achieve a better sealing effect.

[0028] Secondly, the partition 6 is detachably connected to the fan air outlet sealing soft glue 104 and is located outside the fan air outlet sealing soft glue 104. The first sealing block 301 is respectively connected to the fan air outlet sealing soft glue 104 and the water tank 202; the second soft glue 304 is embedded in the first sealing block 301 and connected to the water tank 202; the second sealing block 302 is detachably connected to the first sealing block 301 and connected to the water tank cover 201; the first soft glue 303 is embedded in the second sealing block 302 and connected to the water tank cover 201.

[0029] The sealing component 3 is composed of the first sealing block 301, the second sealing block 302, the first soft glue 303, and the second soft glue 304. The sealing component 3 is connected to the fan by being installed on the partition 6. A circle of sealing bosses is provided at the contact point for squeezing the fan air outlet sealing soft glue 104 to achieve a sealing effect. The second soft glue 304 is squeezed to seal at the docking point with the water tank component 2, and the elastic buckle above the water tank side panel 203 of the water tank component 2 is used to fasten the rear cover shell 402 to fix the position, so that the component remains in an extruded state. The wind of the fan component 1 enters the water tank 202 through the first sealing block 301, enters from the second sealing block 302 after humidification, and finally sends the gas out from the sealing block air outlet 3011.

[0030] Meanwhile, the heating assembly 5 comprises a heating plate 501 , a spring 502 and a bottom cover 503 , wherein the heating plate 501 is located at the bottom of the water tank 202 ; and both ends of the spring 502 are respectively connected to the heating plate 501 and the bottom cover 503 .

[0031] The heating assembly 5 is composed of the heating plate 501, the spring 502, and the bottom cover 503. The heating plate 501 is controlled to transfer heat to the heat-conducting plate at the bottom of the water tank 202, thereby heating the water in the water tank 202. The spring 502 is used to ensure the close fit between the heating plate 501 and the heat-conducting plate after the water tank assembly 2 is extracted and put back, thereby improving the heat transfer efficiency. The heating plate 501 is limited by the bottom cover 503 so that it can only move up and down. The bottom of the heating plate 501 adopts an elastic structure, which makes the heating contact surface fit better when the heating plate 501 is heated, improves the heat transfer efficiency, and facilitates the pulling and drawing of the water tank 202.

[0032] In addition, the front cover shell 401 is detachably connected to the rear cover shell 402; the switch module 403 is detachably connected to the rear cover shell 402 and is located on the top of the rear cover shell 402; the tempered glass panel 405 is adhered to the front cover shell 401 and is located on the surface wall of the front cover shell 401; the rotary encoder 406 is connected to the tempered glass panel 405; the rear cover shell 402 is detachably connected to the partition 6 and is located on the outside of the partition 6.

[0033] The shell 4 structure is composed of the front cover shell 401, the rear cover shell 402, the 182*92 tempered glass panel 405, the switch module 403, the rotary encoder 406, a 5-inch resistive screen, and a main control board. The front cover shell 401 and the rear cover shell 402 of the shell 4 structure are fixed by a limit groove and a spring buckle, and a lip edge is designed around them to beautify the gap. The front cover shell 401 and the rear cover shell 402 play a role in connecting the internal structure and protecting it. The rotary encoder 406 is used to scroll the selection function interface to prevent it from being taken out and used in case of accidental failure of the touch screen. The switch module 40 3 is used to control the start of the ventilator and enter the interface of delayed boost. The switch module 403 is supported by flexible materials under the button, which not only increases the feel of pressing, but also plays a waterproof role. In order to prevent the situation where the switch cannot be seen when getting up at night, fluorescent agent is used in the silk screen printing, so that the switch can be clearly seen when getting up at night. The 5-inch resistive screen fits tightly with the 182*92 tempered glass panel 405. The back of the 182*92 tempered glass panel 405 is affixed with adhesive, which is attached to the front cover 401 to protect the 5-inch resistive screen. When in use, if no operation is performed for a long time, the screen will be blacked out at regular intervals, so as not to affect the user's sleep at night.

[0034] A non-invasive positive pressure ventilator using the present embodiment is configured such that the blower air outlet sealing soft rubber 104 of the blower assembly 1 is inserted into the hole reserved in the partition 6, and then the partition 6 and the blower assembly 1 are inserted into the guide groove in the rear cover shell 402. There is a raised limiter on the edge of the partition 6 for positioning. The front cover shell 401 is fastened, and then the sealing assembly 3 is installed on the partition 6. The water tank assembly 2 is inserted into the rear cover shell 402 to complete the assembly. The assembly is convenient and the production efficiency is improved. The sealing component 3 is connected to the fan by being installed on the partition 6, and a circle of sealing bosses is provided at the contact point, which is used to squeeze the fan outlet sealing soft glue 104 to achieve a sealing effect. The joint with the water tank component 2 is also sealed by squeezing glue, and the elastic buckle above the water tank side plate 203 of the water tank component 2 is used to fasten the rear cover shell 402 to fix the position, so that the component remains in an extruded state, and no deviation occurs when the water tank 202 is pulled out. The sealing component 3 can make the fan component 1 and the water tank component 2 to form an effective seal, the water tank cover 201 is designed with a groove, the surface of the groove is smooth, and an interference fit is formed with the water tank cover sealing ring 205. Similarly, a groove with a smooth surface is also designed above the water tank 202 for placing the water tank sealing ring 206. The water tank cover sealing ring 205 is squeezed with the water tank sealing ring 206 and fixed in position with the water tank buckle 204, so as to achieve a sealing effect. The two flexible materials avoid gas leakage caused by the gap generated in the case of uneven pressure, prevent air leakage and prevent water leakage after cooling.

[0035] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A non-invasive positive pressure ventilator, comprising a housing, characterized in that: It also includes a fan assembly, a water tank assembly, a sealing assembly and a heating assembly; The fan assembly, the water tank assembly, the sealing assembly and the heating assembly are respectively located inside the shell, the water tank assembly comprises a water tank cover, a water tank, a water tank side plate, a water tank buckle, a water tank cover sealing ring and a water tank sealing ring, the water tank cover is interference fit with the water tank cover sealing ring, the water tank sealing ring is interference fit with the water tank and is located above the water tank, one side of the water tank buckle is rotatably connected to the water tank, the other side of the water tank buckle is engaged with the water tank cover, the water tank side plate is detachably connected to the water tank and is located on the side wall of the water tank, the heating assembly is located at the bottom of the water tank, and the fan assembly is connected to the water tank through the sealing assembly.

2. The non-invasive positive pressure ventilator according to claim 1, characterized in that: The fan assembly includes a fan upper cover plate, a fan housing, a fan lower cover plate, a pressure difference sensor, a sensor sealing soft glue and a fan air outlet sealing soft glue. The fan upper cover plate is detachably connected to the fan housing and is located at the top of the fan housing; the fan lower cover plate is detachably connected to the fan housing and is located at the bottom of the fan housing; the pressure difference sensor is connected to the fan housing, and the sensor sealing soft glue is located between the pressure difference sensor and the fan housing; the fan air outlet sealing soft glue is connected to the fan housing and is located on the side wall of the fan housing.

3. The non-invasive positive pressure ventilator according to claim 2, characterized in that: The fan assembly also includes a partition, which is detachably connected to the fan air outlet sealing soft rubber and is located on the outside of the fan air outlet sealing soft rubber.

4. The non-invasive positive pressure ventilator according to claim 3, characterized in that: The sealing assembly includes a first sealing block, a second sealing block, a first soft glue and a second soft glue. The first sealing block is respectively connected to the fan outlet sealing soft glue and the water tank; the second soft glue is embedded in the first sealing block and connected to the water tank; the second sealing block is detachably connected to the first sealing block and connected to the water tank cover; the first soft glue is embedded in the second sealing block and connected to the water tank cover.

5. The non-invasive positive pressure ventilator according to claim 4, characterized in that: The heating assembly comprises a heating plate, a spring and a bottom cover. The heating plate is located at the bottom of the water tank. The two ends of the spring are respectively connected to the heating plate and the bottom cover.

6. The non-invasive positive pressure ventilator according to claim 5, characterized in that: The outer shell includes a front cover shell, a rear cover shell, a tempered glass panel, a switch module and a rotary encoder, the front cover shell is detachably connected to the rear cover shell; the switch module is detachably connected to the rear cover shell and is located on the top of the rear cover shell; the tempered glass panel is adhered to the front cover shell and is located on the surface wall of the front cover shell; the rotary encoder is connected to the tempered glass panel; the rear cover shell is detachably connected to the partition and is located on the outside of the partition.

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