Breathing machine

Abstract

The utility model belongs to the technical field of medical equipment, and particularly relates to a breathing machine. The breathing machine comprises a shell, an elastic piece and a humidifying heater, the humidifying heater comprises a water tank and a heating assembly, and the water tank is detachably installed in the shell; the heating assembly comprises a heating plate, and the elastic piece is compressed between the bottom wall of the shell and the heating plate so that the heating plate can abut against the bottom wall of the water tank. The heating plate can be tightly attached to the bottom wall of the water tank after being subjected to upward elastic force of the compressed elastic piece, so that the heating plate is in good contact with the bottom wall of the water tank, the heat transfer efficiency between the heating plate and the water tank is higher, and the heating efficiency of the humidifying heater is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, in particular to a ventilator. Background Art

[0002] A medical positive pressure ventilation machine is a type of ventilator. Its principle is to use a turbine to extract air to provide patients with ventilation at a pressure greater than atmospheric pressure. A medical positive pressure ventilation machine is equipped with a humidification heater, which is connected to the airway of the ventilator. It is mainly used to heat and humidify the patient's gas during treatment, so that the inhaled gas is closer to the human body's breathing environment and improves the comfort of treatment.

[0003] In the existing ventilator, the humidification heater includes a water tank and a heating assembly. The water tank is installed in the housing of the ventilator, and the heating plate of the heating assembly is installed on the bottom wall of the housing and in contact with the bottom wall of the water tank. The water in the water tank is heated by the heating assembly to form water vapor, which is mixed with the air in the airway leading to the water tank and then delivered to the patient.

[0004] The humidification heater needs to dismantle the water tank from time to time to add water or clean it. However, the bottom wall of the water tank that is reassembled after disassembly cannot make good contact with the heating plate, resulting in reduced heat transfer efficiency between the heating plate and the water tank, which in turn reduces the heating efficiency of the humidification heater. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to provide a respirator for the problem that the bottom wall of the water tank and the heating plate cannot be well contacted after being disassembled and reassembled in the existing respirator.

[0006] In order to solve the above technical problems, an embodiment of the utility model provides a ventilator, including a shell, an elastic member and a humidification heater, the humidification heater includes a water tank and a heating assembly, the water tank is detachably installed in the shell; the heating assembly includes a heating plate, the elastic member is compressed between the bottom wall of the shell and the heating plate to press the heating plate against the bottom wall of the water tank.

[0007] Optionally, a guide structure for guiding the elastic member is formed on the bottom wall of the shell, and the guide structure cooperates with the elastic member sleeve.

[0008] Optionally, the guide structure comprises a guide column protruding toward the water tank, and the elastic member is sleeved on the guide column.

[0009] Optionally, the elastic member is a compression spring.

[0010] Optionally, a plurality of guide posts are provided, and the elastic member is sleeved on each of the guide posts.

[0011] Optionally, the heating plate is square, and four guide posts are provided, each of the guide posts is sleeved with the elastic member, and the four guide posts are respectively provided corresponding to the four corners of the heating plate.

[0012] Optionally, a limiting structure is formed in the shell, and the limiting structure is used to cooperate with the outer peripheral edge of the heating plate to stop the heating plate so that the heating plate faces the bottom wall of the water tank.

[0013] Optionally, the limiting structure includes a surrounding plate extending horizontally around the outer peripheral edge of the heating plate.

[0014] Optionally, the heating plate comprises a substrate and a heating film, and the heating film is fixed on a surface of the substrate on one side facing away from the water tank.

[0015] Optionally, the substrate includes a plate body and a stopper formed by bending the outer peripheral edge of the plate body in a direction away from the water tank and extending horizontally in all directions, the heating film is attached to the plate body, and the stopper can cooperate with the outer shell after the water tank is removed.

[0016] In the ventilator of the utility model, when the water tank is disassembled and reassembled in the outer shell, the bottom wall of the water tank is pressed on the heating plate to compress the elastic member. The heating plate can be tightly attached to the bottom wall of the water tank after being subjected to the upward elastic force of the compressed elastic member, so that the heating plate is in good contact with the bottom wall of the water tank, thereby increasing the heat transfer efficiency between the heating plate and the water tank, thereby improving the heating efficiency of the humidification heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a ventilator provided by an embodiment of the utility model;

[0018] Figure 2 yes Figure 1 Exploded diagram of

[0019] Figure 3 yes Figure 1 Longitudinal section of .

[0020] The reference numerals in the specification are as follows:

[0021] 1. Outer shell; 11. Bottom shell; 12. Top cover; 13. Middle shell; 14. Enclosure; 15. Guide column; 2. Water tank; 21. Lower shell; 22. Partition; 23. Upper cover; 3. Heating plate; 31. Base plate; 311. Plate body; 312. Stopper; 32. Heating film; 4. Elastic member. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a ventilator, including a housing 1, an elastic member 4 and a humidification heater, the humidification heater including a water tank 2 and a heating assembly, the water tank 2 is detachably mounted in the housing 1, the heating assembly can heat the water tank 2, so that the water in the water tank 2 is heated to form water vapor. The airway of the ventilator is connected to the water tank 2, and the gas in the airway can pass to the water tank 2 to be mixed with the water vapor and then delivered to the patient, thereby heating and humidifying the gas, so that the gas inhaled by the patient is closer to the respiratory environment of the human body, and the comfort of treatment is improved.

[0024] like Figure 3 As shown, the heating assembly includes a heating plate 3 , and an elastic member 4 is compressed between the bottom wall of the housing 1 and the heating plate 3 to press the heating plate 3 against the bottom wall of the water tank 2 .

[0025] It should be noted that the heating assembly also includes a heating circuit, the heating plate 3 is connected to a power source via the heating circuit, and the heating circuit can be disposed between the heating plate 3 and the bottom wall of the housing 1 .

[0026] When the humidification heater needs to be filled with water or cleaned, the water tank 2 is taken out, the elastic member 4 recovers its deformation and drives the heating plate 3 to move. When the water tank 2 is reinstalled into the housing 1, the bottom wall of the water tank 2 presses on the heating plate 3 to compress the elastic member 4, and the heating plate 3 is subjected to the upward elastic force of the compressed elastic member 4, so that the heating plate 3 and the bottom wall of the water tank 2 are in good contact, so that the heat transfer efficiency between the heating plate 3 and the water tank 2 is higher, and the heating efficiency of the humidification heater is effectively improved.

[0027] In the ventilator of the present invention, when the water tank 2 is disassembled and reassembled in the outer shell 1, the bottom wall of the water tank 2 is pressed on the heating plate 3 to compress the elastic member 4. The heating plate 3 is subjected to the upward elastic force of the compressed elastic member 4 and can be tightly attached to the bottom wall of the water tank 2, so that the heating plate 3 is in good contact with the bottom wall of the water tank 2, thereby improving the heat transfer efficiency between the heating plate 3 and the water tank 2, thereby improving the heating efficiency of the humidification heater.

[0028] In one embodiment, a guide structure is formed on the bottom wall of the shell 1, and the guide structure cooperates with the elastic member 4 plug-in sleeve to guide the deformed elastic member 4, thereby preventing the elastic member 4 from generating component forces in other directions on the heating plate 3, which is conducive to good contact between the heating plate 3 and the bottom wall of the water tank 2.

[0029] In one embodiment, the guide structure includes a guide column 15 protruding toward the water tank 2, and the elastic member 4 is sleeved on the guide column 15. Compared with the guide groove for accommodating the elastic member 4 provided on the bottom wall of the housing 1, the cross-sectional dimension of the guide column 15 is the same as the inner cross-sectional dimension of the elastic member 4, the guide column 15 is smaller in volume and occupies less space, and can free up more installation space for other parts, such as the heating circuit.

[0030] In one embodiment, the elastic member 4 is a compression spring.

[0031] In other embodiments, the elastic member 4 may be a rubber member.

[0032] In one embodiment, the guide post 15 is a cylinder, and the diameter of the guide post 15 is the same as the inner diameter of the compression spring.

[0033] In one embodiment, a plurality of guide posts 15 are provided, and an elastic member 4 is sleeved on each guide post 15 . Multiple positions on the heating plate 3 can be subjected to an upward force, so that the heating plate 3 is facilitated to be close to the bottom wall of the water tank 2 .

[0034] In one embodiment, if Figure 2 As shown, the heating plate 3 is square, and four guide posts 15 are provided. An elastic member 4 is sleeved on each guide post 15 . The four guide posts 15 are respectively provided corresponding to the four corners of the heating plate 3 .

[0035] In one embodiment, a limiting structure is formed in the housing 1 , and the limiting structure is used to cooperate with the outer peripheral edge of the heating plate 3 to stop the heating plate 3 so that the heating plate 3 faces the bottom wall of the water tank 2 .

[0036] In one embodiment, the limiting structure includes a surrounding plate 14 extending horizontally around the outer peripheral edge of the heating plate 3 , the surrounding plate 14 encloses to form a limiting groove, and the heating plate 3 passes through the limiting groove and rests on the bottom wall of the water tank 2 .

[0037] In one embodiment, the heating plate 3 includes a substrate 31 and a heating film 32, and the heating film 32 is fixed on a surface of the substrate 31 facing away from the water tank 2. The heating film 32 is electrically connected to the heating circuit, and the heat generated by the heating film 32 is conducted to the water tank 2 through the substrate 31 to heat the water in the water tank 2.

[0038] Heating film 32 is an existing product. Heating film 32 evolved from printed circuit technology. They consist of an ultra-thin heating circuit sandwiched between two insulating layers made of silicon, polyester, nylon or mica. Heating film 32 can be equipped with the following components: wires with protective connectors such as PVC, silicon, polyamide nylon, polytetrafluoroethylene, etc.; controllers such as thermostats, thermal fuses, etc.; sensors: thermocouples, PT100, PT1000, NTC, SMD devices.

[0039] In one embodiment, the substrate 31 includes a plate body portion 311 and a stop portion 312 formed by bending the outer peripheral edge of the plate body portion 311 in a direction away from the water tank 2 and extending horizontally in all directions. The heating film 32 is attached to the plate body portion 311. After the water tank 2 is removed, the elastic member 4 restores its deformation and drives the heating plate 3 to move. The stop portion 312 cooperates with the stop of the outer shell 1 to limit the position of the heating plate 3 after movement.

[0040] In one embodiment, the plate body 311 extends into the limiting groove formed by the enclosure 14 to abut against the bottom wall of the water tank 2, so as to conduct the heat generated by the heating film 32 to the water tank 2. The limiting groove formed by the enclosure 14 is adapted to the shape of the plate body 311, and the enclosure 14 can be stopped and matched with the outer peripheral edge of the plate body 311, so that the plate body 311 is aligned with the bottom wall of the water tank 2. The stopper 312 is located on the side of the enclosure 14 facing away from the water tank 2. After the water tank 2 is removed, the elastic member 4 recovers its deformation, and the stopper 312 can be stopped and matched with the bottom surface of the enclosure 14.

[0041] In one embodiment, the housing 1 includes a bottom shell 11, a middle shell 13 and a top cover 12, a panel 14 is formed on the middle shell 13, the middle shell 13 is fixed on the bottom shell 11, so as to enclose and form a U-shaped installation chamber, and the water tank 2 is installed in the installation chamber. The middle shell 13 and the bottom shell 11 form a connecting arm on one side, and the top cover 12 has a hinged side and a clamping side, the hinged side is hinged to the connecting arm, and the clamping side can be clamped with the bottom shell 11, so that the top cover 12 fully covers the top of the water tank 2, reducing the dust and dirt collected after the ventilator is used for a long time.

[0042] In one embodiment, the water tank 2 includes an upper cover 23, a lower shell 21 and a partition 22. The upper cover 23 is detachably connected to the top of the lower shell 21. The upper cover 23 and the lower shell 21 are enclosed to form a water storage chamber. The partition 22 is connected between the upper cover 23 and the lower shell 21. The upper cover 23 is provided with an air outlet, and the side wall of the lower shell 21 is provided with an air inlet.

[0043] The partition 22 is provided with a first through hole, a second through hole and a third through hole that penetrate through the two side surfaces in the thickness direction thereof, and the third through hole is located between the first through hole and the second through hole. A channel for gas circulation is enclosed between the partition 22 and the upper cover 23, and the channel is connected with the first through hole, the second through hole and the air inlet. An air outlet pipe is provided on one side of the upper cover 23 close to the partition 22, and the partition 22 is sleeved on the outer periphery of the air outlet pipe through the third through hole. One end of the air outlet pipe away from the upper cover 23 extends into the water storage cavity, and both ends of the air outlet pipe are open, and the water storage cavity is connected with the air outlet through the air outlet pipe.

[0044] The gas in the airway of the ventilator enters the channel through the air inlet, flows downward from the first through hole and the second through hole to contact the water vapor in the water storage chamber, and finally flows out from the air outlet pipe.

[0045] In one embodiment, a water level sensor is provided on the water tank 2, for example, an optical water level sensor, and the water level sensor is electrically connected to the main unit of the ventilator. When the water level detected by the water level sensor is lower than the set water level, the main unit of the ventilator sends an alarm message or controls the heating component to disconnect heating, so as to effectively prevent the water tank 2 from drying up and damaging the water tank 2.

[0046] In other embodiments, the guide structure may include a guide groove opening toward the water tank 2 , and the elastic member 4 is inserted into the guide groove.

[0047] In other embodiments, only one guide post 15 may be provided, and correspondingly, only one elastic member 4 may be provided. In this case, the contact area between the elastic member 4 and the heating plate 3 may be increased by increasing the cross-sectional size of the elastic member 4 .

[0048] In other embodiments, the limiting structure may include a plurality of limiting columns, which are used to cooperate with the outer peripheral edge of the heating plate 3 to limit the position of the heating plate 3 so that the heating plate 3 faces the bottom wall of the water tank 2.

[0049] In other embodiments, the heating plate 3 may be an electric heating plate 3, such as a mica electric heating plate, a carbon crystal electric heating plate, etc. The electric heating plate 3 is a prior art and will not be described in detail herein.

[0050] In other embodiments, the shape of the heating plate 3 can be adjusted according to the shape of the bottom wall of the water tank 2 during actual use.

[0051] 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. A ventilator, characterized in that: The humidifying heater comprises a housing (1), an elastic member (4) and a humidifying heater, wherein the humidifying heater comprises a water tank (2) and a heating assembly, wherein the water tank (2) is detachably mounted in the housing (1); the heating assembly comprises a heating plate (3), and the elastic member (4) is compressed between the bottom wall of the housing (1) and the heating plate (3) so as to press the heating plate (3) against the bottom wall of the water tank (2).

2. The ventilator according to claim 1, characterized in that: A guide structure for guiding the elastic member (4) is formed on the bottom wall of the housing (1), and the guide structure is sleeved and matched with the elastic member (4).

3. The ventilator according to claim 2, characterized in that: The guide structure comprises a guide column (15) protruding towards the water tank (2), and the elastic member (4) is sleeved on the guide column (15).

4. The ventilator according to claim 3, characterized in that: The elastic member (4) is a compression spring.

5. The ventilator according to claim 3, characterized in that: A plurality of guide posts (15) are provided, and each guide post (15) is sleeved with the elastic member (4).

6. The ventilator according to claim 5, characterized in that: The heating plate (3) is square in shape, and four guide columns (15) are provided. The elastic member (4) is sleeved on each guide column (15). The four guide columns (15) are respectively provided corresponding to the four corners of the heating plate (3).

7. A ventilator according to any one of claims 1 to 6, characterized in that: A limiting structure is formed in the outer shell (1), and the limiting structure is used to cooperate with the outer peripheral edge of the heating plate (3) to stop the heating plate (3) so that the heating plate (3) faces the bottom wall of the water tank (2).

8. The ventilator according to claim 7, characterized in that: The limiting structure comprises a surrounding plate (14) extending horizontally around the outer peripheral edge of the heating plate (3).

9. A ventilator according to any one of claims 1 to 6, characterized in that: The heating plate (3) comprises a base plate (31) and a heating film (32); the heating film (32) is fixed on a surface of a side of the base plate (31) facing away from the water tank (2).

10. The ventilator according to claim 9, characterized in that: The base plate (31) comprises a plate body (311) and a stopper (312) formed by bending the outer peripheral edge of the plate body (311) in a direction away from the water tank (2) and extending horizontally in all directions; the heating film (32) is attached to the plate body (311); and the stopper (312) can be engaged with the outer shell (1) after the water tank (2) is disassembled.

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