Humidifying device of respiratory support equipment and respiratory support equipment

Abstract

The invention discloses a humidifying device of respiratory support equipment. The humidifying device comprises a heating aluminum disc, a first heating device, a second heating device, a heating device shell, a temperature sensor and an overtemperature safety device. The first heating device and the second heating device are arranged below the heating aluminum plate in parallel, the heating device shell wraps the first heating device and the second heating device, and the temperature sensor is arranged on the surface or the near end of the heating device shell and used for monitoring the temperature of the heating aluminum plate in real time. And the overtemperature safety device is connected in series in the heating circuit and is used for cutting off the heating circuit when the temperature is abnormal. The invention further discloses respiratory support equipment. The technical problem that the power of an existing breathing support equipment humidifier is not matched under the wide voltage input condition is solved.

Description

Technical Field

[0001] This invention relates to the field of respiratory support equipment technology, and more particularly to a humidification device and a respiratory support equipment. Background Technology

[0002] Respiratory support equipment is an important medical device used in clinical practice to provide humidified and warmed gas. It is widely used in the field of respiratory support therapy. This type of equipment is usually composed of key components such as a main unit, control circuit board, humidifier, and breathing tubing. The humidifier heats the water in the humidification tank through electric heating to produce water vapor at a suitable temperature and humidity to avoid dryness and discomfort in the patient's respiratory tract.

[0003] In existing technologies, humidifiers in respiratory support devices mostly use fixed-power ceramic heating elements as the heat source. Ceramic materials have a low thermal conductivity, typically 2-3 W / (m·K), resulting in low heating efficiency and high energy consumption. More importantly, the fixed-power design of the heating elements makes it difficult to adapt to different voltage standards in different countries or regions (such as 110V and 220V). When a device designed for 220V input is connected to a 110V power supply, the heating power is insufficient, and the humidification effect is inadequate. Conversely, if a device designed for 110V input is mistakenly connected to a 220V power supply, the power consumption will be excessive, easily leading to over-humidification, increased condensation, and even potential overheating safety hazards.

[0004] Patent document CN202510453549.4 discloses a portable ventilator humidification device comprising: a humidifier with an inlet pipe inside, the inlet pipe having a pin and at least one inlet hole; and an adapter valve detachably connected to the inlet pipe, the adapter valve including an adapter, a stop valve, a valve core, and a first reset component. The adapter is a hollow structure, comprising an upper part and a lower part, which are an integral structure and interconnected. The lower part has a connecting ring inside and several inlets at its bottom. The valve core is inserted into the connecting ring, one end of which is connected to the stop valve, and the other end has a limiting circle. The first reset component is sleeved on the valve core. Currently, there is no mature technology that can achieve adaptive adjustment of humidifier power over a wide voltage input range while simultaneously considering heating efficiency and safety performance. Therefore, there is an urgent need to propose a humidification device and a respiratory support device. Summary of the Invention

[0005] The main objective of this invention is to propose a humidification device for respiratory support equipment and a respiratory support device in order to solve the technical problem of power mismatch in existing respiratory support equipment humidifiers under wide voltage input conditions.

[0006] To achieve the above objectives, the present invention provides a humidification device for a respiratory support device, wherein the humidification device for the respiratory support device comprises:

[0007] The device comprises a heating aluminum plate, a first heating device, a second heating device, a heating device housing, a temperature sensor, and an over-temperature protection device. The first and second heating devices are arranged side by side below the heating aluminum plate. The heating device housing is wrapped around the first and second heating devices. The temperature sensor is located on the surface or near the end of the heating device housing for real-time monitoring of the heating aluminum plate temperature. The over-temperature protection device is connected in series in the heating circuit for cutting off the heating circuit when the temperature is abnormal.

[0008] In one preferred embodiment, the heating aluminum plate is a metal aluminum disc structure, and the heating aluminum plate is located at the bottom of the humidifying water tank and is directly connected to the bottom of the humidifying water tank.

[0009] In one preferred embodiment, the first heating device and the second heating device are set up independently of each other.

[0010] In one preferred embodiment, both the first heating device and the second heating device are in the form of a ring.

[0011] In one preferred embodiment, the first heating device and the second heating device are isolated from the heating device housing by an insulating layer.

[0012] In one preferred embodiment, the insulating layer is made of a polymer material with a thickness of less than 1 mm.

[0013] In one preferred embodiment, the insulating layer comprises epoxy resin, polyimide film, or glass fiber.

[0014] In one preferred embodiment, the over-temperature protection device is a thermal fuse, which is located between the heating device and the power interface.

[0015] In one preferred embodiment, the temperature sensor is an NTC resistor, which is connected to the main control circuit via a connection interface.

[0016] A respiratory support device including a humidification device of the aforementioned respiratory support device comprises: a main unit and a humidification device; the main unit and the humidification device are connected to a gas pipeline via an electrical interface; the main unit includes an MCU, a memory, a debugging interface unit, a display screen, a fan unit, an air-oxygen mixing unit, an oxygen control unit, and a sensor unit; the MCU is connected to the memory, the debugging interface unit, the display screen, the fan unit, the oxygen control unit, and the sensor unit respectively; the fan unit is connected to the oxygen control unit, the sensor unit, the air-oxygen mixing unit, and the humidification device respectively; and the air-oxygen mixing unit is connected to the humidification device.

[0017] In the above technical solution of the present invention, the humidification device of the respiratory support equipment includes: a heating aluminum plate, a first heating device, a second heating device, a heating device housing, a temperature sensor, and an over-temperature protection device; the first heating device and the second heating device are arranged side by side below the heating aluminum plate, the heating device housing is wrapped around the first heating device and the second heating device, the temperature sensor is disposed on the surface or near the end of the heating device housing for real-time monitoring of the temperature of the heating aluminum plate, and the over-temperature protection device is connected in series in the heating circuit for cutting off the heating circuit when the temperature is abnormal. The present invention solves the technical problem of power mismatch in existing respiratory support equipment humidifiers under wide voltage input conditions. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a humidification device for a respiratory support equipment according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the first heating device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the second heating device according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the outer casing of the heating device according to an embodiment of the present invention;

[0023] Figure 5 This is a side sectional view of a humidification device of a respiratory support equipment according to an embodiment of the present invention;

[0024] Figure 6 This is a first schematic diagram of a respiratory support device according to an embodiment of the present invention;

[0025] Figure 7 This is a second schematic diagram of a respiratory support device according to an embodiment of the present invention.

[0026] Explanation of icon numbers:

[0027] 1. First heating device; 2. Second heating device; 3. Heating device housing; 4. Over-temperature protection device; 5. Temperature sensor; 6. Connection interface; 7. Power interface; 8. Insulation layer; 9. Heat-conducting sheet; 10. Input power supply; 11. Relay; 12. Transistor; 13. Isolation module; 14. Drive circuit unit.

[0028] The realization of the objective, functional characteristics and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that all directional indicators (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0032] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0033] See Figures 1-5 According to one aspect of the present invention, the present invention provides a humidification device for a respiratory support device, wherein the humidification device for the respiratory support device comprises:

[0034] The device comprises a heating aluminum plate, a first heating device 1, a second heating device 2, a heating device housing 3, a temperature sensor 5, and an over-temperature protection device 4. The first heating device 1 and the second heating device 2 are arranged side by side below the heating aluminum plate. The heating device housing 3 is wrapped around the first heating device 1 and the second heating device 2. The temperature sensor 5 is located on the surface or near the end of the heating device housing 3 for real-time monitoring of the temperature of the heating aluminum plate. The over-temperature protection device 4 is connected in series in the heating circuit for cutting off the heating circuit when the temperature is abnormal.

[0035] Specifically, in this embodiment, the heating aluminum plate has a metal aluminum disc structure. The heating aluminum plate is located at the bottom of the humidifying water tank and is directly connected to the bottom of the humidifying water tank to achieve efficient heat conduction. Its structure is a metal aluminum disc structure with a high thermal conductivity, which can quickly transfer heat to the water in the water tank.

[0036] Specifically, in this embodiment, the first heating device 1 and the second heating device 2 are arranged side by side below the heating aluminum plate. The first heating device 1 and the second heating device 2 are independently set and are both embedded in the heating device housing 3. The first heating device 1 and the second heating device 2 are both in a ring shape. The first heating device 1 and the second heating device 2 are isolated from the heating device housing 3 by the insulating layer 8 to avoid electrical short circuits and at the same time ensure efficient heat conduction towards the heating aluminum plate.

[0037] Specifically, in this embodiment, the outer shell 3 of the heating device is made of metal. In this invention, the outer shell 3 of the heating device is made of aluminum and is wrapped around the first heating device 1 and the second heating device 2, serving as structural support and uniform heat distribution. An insulating layer 8 is provided between the outer shell 3 of the heating device and the heating device, which ensures both thermal conductivity and electrical safety requirements.

[0038] Specifically, in this embodiment, the first heating device 1 and the second heating device 2 are in thermal contact with the heating device housing 3 through an insulating layer 8. The insulating layer 8 can prevent the heating device from leaking electricity and causing electric shock to the housing. The insulating layer 8 is made of a polymer material with a thickness of less than 1 mm. The insulating layer 8 includes epoxy resin, polyimide film or glass fiber.

[0039] Specifically, in this embodiment, the temperature sensor 5 is an NTC resistor, installed on or near the surface of the heating device housing 3, for real-time monitoring of the temperature of the heating aluminum plate. The NTC resistor is connected to the main control circuit through the connection interface 6. The over-temperature protection device 4 is a temperature fuse, which is located between the heating device and the power interface 7, connected in series in the main path of the heating circuit. It can physically cut off the circuit when the temperature is abnormal. Both the temperature sensor 5 and the over-temperature protection device are connected to the main control circuit through the connection interface 6.

[0040] See Figure 6-7 According to another aspect of the present invention, a respiratory support device is provided, wherein the respiratory support device includes: a main unit and a humidifier; the main unit and the humidifier are connected to a gas pipeline via an electrical interface; the main unit serves as a control center, providing gas power and system control, and the humidifier serves as a functional execution unit, responsible for humidifying and heating the gas; the main unit includes an MCU, a memory, a debugging interface unit, a display screen, a fan unit, an air-oxygen mixing unit, an oxygen control unit, and a sensor unit; the MCU is connected to the memory, the debugging interface unit, the display screen, the fan unit, the oxygen control unit, and the sensor unit respectively; the fan unit is connected to the oxygen control unit, the sensor unit, the air-oxygen mixing unit, and the humidifier respectively; and the air-oxygen mixing unit is connected to the humidifier.

[0041] Specifically, in this embodiment, the host draws in external dry air into the device through a fan unit. After the high-pressure oxygen interface is connected to oxygen, the oxygen flow rate can be controlled by a solenoid valve to achieve mixing of air and oxygen. The mixed air-oxygen gas is then passed through a humidifier that stores a certain amount of rectified saline or physiological saline. The humidifier humidifies and heats the dry air-oxygen gas through a humidifier tank. The humidified and heated gas is then delivered to the patient through a breathing tube to a mask or nasal cannula, providing a constant flow rate or pressure of humidified and heated gas.

[0042] Specifically, in this embodiment, the host is connected to the patient interface. The host mainly uses an internal MCU as the core unit for control and processing. Other interface circuits, such as the breathing tubing and various module units, are connected to the host to realize the basic functions of the device. The device's air path is powered by a fan unit to draw air into the device. The gas passes through a humidifier and then through the breathing tubing to the nasal oxygen tube at the patient interface. The heating temperature of the humidifier is fed back to the MCU through a temperature sensor 5, which controls the first heating device 1 and the second heating device 2 of the humidifier in real time.

[0043] Specifically, in this embodiment, the relay 11 is controlled by the MCU, and the first heating device 1 and the second heating device 2 are powered on by different transistors 12 respectively, so that each heating device can be turned on or off separately. The temperature sensor 5 serves as temperature feedback and is used to control the heating power function of the humidifier in real time. The isolation module 13 is used to isolate the power supply between the MCU and the heating component, and sends the input power supply 10 signal of the heating component to the MCU to determine the current power supply voltage status or voltage range.

[0044] Specifically, in this embodiment, when the respiratory support device is powered on normally, the device enters standby mode, the initialization settings of all parameters of the device system are completed, the MCU obtains the input system power parameters, determines the control of the first heating device 1 and the second heating device 2 based on the input power parameters 10 and the system setting parameters, collects the temperature status of the heating components, the MCU controls the relay 11, adjusts the control signal of the corresponding transistor 12 according to the temperature status, so that the humidification device heats up, the temperature of the humidification device reaches the target set value, controls the signal of the transistor 12 to keep the temperature within a constant range, when treatment stops, the MCU controls the relay 11 to turn off, turns off the signal of the transistor 12, and the device system enters standby mode.

[0045] Specifically, in this embodiment, the humidification device consists of a humidification water tank, a heating aluminum plate, dual heating devices, a temperature sensor 5, and an over-temperature protection device. After the mixed gas enters the humidification water tank, humidification and heating are achieved through heat exchange with the heating aluminum plate. The dual heating devices can automatically switch working modes according to the input voltage to ensure the heating power requirements under different voltages. The host and the humidification device form a closed-loop control system. The MCU adjusts the heating power in real time according to the feedback from the temperature sensor 5, and controls the relay 11 and transistor 12 through the drive circuit to manage the on / off of the first heating device 1 and the second heating device 2. At the same time, multiple safety protection mechanisms are set up. The over-temperature protection device cuts off the heating circuit when the temperature is abnormal. The insulation layer 8 prevents the heating device from leaking electricity. The MCU monitors the system status in real time to ensure that the equipment operates safely and stably within a wide voltage range (110V-220V), which significantly improves the compatibility and reliability of the equipment.

[0046] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A humidification device for a respiratory support system, characterized in that, include: Heating aluminum plate, first heating device, second heating device, heating device housing, temperature sensor and over-temperature protection device; The first heating device and the second heating device are arranged side by side below the heating aluminum plate. The outer shell of the heating device is wrapped around the outside of the first heating device and the second heating device. The temperature sensor is set on the surface or near the end of the outer shell of the heating device for real-time monitoring of the temperature of the heating aluminum plate. The over-temperature protection device is connected in series in the heating circuit for cutting off the heating circuit when the temperature is abnormal.

2. The humidification device for a respiratory support system according to claim 1, characterized in that, The heating aluminum plate has a metal aluminum disc-shaped structure and is located at the bottom of the humidifying water tank, directly connected to the bottom of the humidifying water tank.

3. A humidification device for a respiratory support system according to any one of claims 1-2, characterized in that, The first heating device and the second heating device are set up independently of each other.

4. A humidification device for a respiratory support system according to any one of claims 1-2, characterized in that, Both the first heating device and the second heating device have a ring-shaped structure.

5. A humidification device for a respiratory support system according to any one of claims 1-2, characterized in that, The first heating device and the second heating device are isolated from the heating device housing by an insulating layer.

6. The humidification device for a respiratory support system according to claim 5, characterized in that, The insulating layer is made of polymer material with a thickness of less than 1 mm.

7. The humidification device for a respiratory support system according to claim 5, characterized in that, The insulating layer includes epoxy resin, polyimide film, or glass fiber.

8. A humidification device for a respiratory support system according to any one of claims 1-2, characterized in that, The over-temperature protection device is a temperature fuse, which is located between the heating device and the power interface.

9. A humidification device for a respiratory support system according to any one of claims 1-2, characterized in that, The temperature sensor is an NTC resistor, which is connected to the main control circuit via a connection interface.

10. A respiratory support device comprising a humidification device according to any one of claims 1-9, characterized in that, include: The main unit and humidifier are connected to the air duct via an electrical interface. The host includes an MCU, a memory, a debugging interface unit, a display screen, a fan unit, an air-oxygen mixing unit, an oxygen control unit, and a sensor unit. The MCU is connected to the memory, the debugging interface unit, the display screen, the fan unit, the oxygen control unit, and the sensor unit. The fan unit is connected to the oxygen control unit, the sensor unit, the air-oxygen mixing unit, and the humidification device. The air-oxygen mixing unit is connected to the humidification device.

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