Respiration assisting system and heating power adjusting method thereof

Abstract

The invention discloses a breathing assisting system and a heating power adjusting method thereof. The method comprises the steps that at least one electrical parameter of a power source is obtained; obtaining specific temperatures with respect to the respiratory assistance system, at least one of the specific temperatures being associated with a temperature of the heated and humidified gas; the heating power of the heating module is adjusted to be first heating power through a first power adjusting mechanism according to the electrical parameters, and the heating power of the heating module is adjusted to be second heating power from the first heating power through a second power adjusting mechanism according to the electrical parameters and the specific temperature; wherein the adjustment resolution of the first power adjustment mechanism is lower than the adjustment resolution of the second power adjustment mechanism. The invention provides a new mode for adjusting the heating power of the breathing assistance system, adjustment is performed based on the first power adjustment mechanism and then based on the second power adjustment mechanism, and the adaptability is wider.

Description

Technical Field

[0001] The invention relates to a breathing assistance system and a heating power adjustment method thereof. Background Art

[0002] An important function of a respiratory assistance system is to provide heated and humidified gas to the user for breathing; taking a respiratory assistance system such as a humidifier or an oxidizer as an example, the water in the water tank installed on the instrument is heated to heat and humidify the gas flowing through the water tank. It can be seen that the respiratory assistance system controls the temperature and humidity of the gas to provide the user with the desired humidity and gas of the desired humidity for the user to breathe, and how to adapt to different input conditions to achieve the same desired output has always been a difficult industry problem. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a breathing assistance system and a heating power adjustment method thereof, which are described in detail below.

[0004] According to a first aspect, an embodiment provides a breathing assistance system for heating and humidifying gas breathed by a user, characterized in that the breathing assistance system includes a humidification component, a heating module, a temperature sensor, a power port, a power identification module and a controller;

[0005] The humidifying component has a shell, the shell defines a containing cavity and an inlet end and an outlet end communicated with the containing cavity; the inlet end is used to receive gas input from a gas source, and the containing cavity is used to contain water;

[0006] The heating module is used to heat the water in the containing chamber so that the breathing assistance system can output heated and humidified gas;

[0007] The temperature sensor is used to obtain specific temperatures about the breathing assistance system, at least one of the specific temperatures being associated with the temperature of the heated and humidified gas;

[0008] The power port is used to receive power supply;

[0009] The power source identification module is used to identify at least one electrical parameter of the power source;

[0010] The controller is used to:

[0011] adjusting the heating power of the heating module to a first heating power by a first power adjustment mechanism according to the electrical parameter, and adjusting the heating power of the heating module from the first heating power to a second heating power by a second power adjustment mechanism according to the electrical parameter and the specific temperature;

[0012] The adjustment resolution of the first power adjustment mechanism is lower than the adjustment resolution of the second power adjustment mechanism.

[0013] In one embodiment, the first power regulation mechanism includes changing the resistance of the heating module, and / or the second power regulation mechanism includes adjusting the duty cycle of the voltage or current driving the heating module.

[0014] In one embodiment, the electrical parameters include the industrial frequency voltage of the power supply; the specific temperature includes the temperature of the inlet end, the temperature of the outlet end, the temperature of the heating module, the temperature of the gas breathed by the user, the temperature of the user end of the breathing assistance system close to the user and / or the ambient temperature; the temperature of the heated and humidified gas includes the temperature of the heated and humidified gas at the outlet end, the temperature at the user end, and the temperature between the outlet end and the user end.

[0015] In one embodiment, when the heating module heats the water in the containing chamber with the target heating power, the temperature of the heated and humidified gas is the target temperature; the heating module heats the water in the containing chamber with the second heating power so that the temperature of the heated and humidified gas reaches or approaches the target temperature; wherein the first heating power is within a first deviation from the target heating power, the second heating power is within a second deviation from the target heating power, and the second deviation is smaller than the first deviation.

[0016] In one embodiment, the controller uses the first power adjustment mechanism to ensure that the first heating power of the heating module under different power frequency voltages is within the first deviation from the target heating power.

[0017] In one embodiment, the breathing assistance system also includes a voltage conversion module; the first power regulation mechanism includes controlling the voltage conversion module according to the electrical parameters to convert the industrial frequency voltage of the power supply into a preset industrial frequency voltage for driving the heating module, so that the first heating power of the heating module under different industrial frequency voltages is within the first deviation from the target heating power.

[0018] In one embodiment, the first power regulation mechanism is used to regulate the instantaneous power output by the heating module at a predetermined moment, and the second power regulation mechanism is used to regulate the average power output by the heating module within a predetermined time period including the predetermined moment.

[0019] In one embodiment, after determining that the power frequency voltage of the power supply is within a first power frequency voltage range, the controller changes the resistance of the heating module to a first resistance value; after determining that the power frequency voltage of the power supply is within a second power frequency voltage range, the controller changes the resistance of the heating module to a second resistance value; the first resistance value is smaller than the second resistance value.

[0020] In one embodiment, when the power frequency voltage of the power supply is less than a predetermined threshold, the controller determines that the power frequency voltage of the power supply is within the first power frequency voltage range; otherwise, the controller determines that the power frequency voltage of the power supply is within the second power frequency voltage range.

[0021] In one embodiment, the power identification module comprises a rectifier circuit, a voltage divider circuit and an optocoupler; the rectifier circuit is used to rectify the power frequency voltage of the power supply, the voltage divider circuit is used to divide the rectified voltage to provide it to the primary side of the optocoupler, and the secondary side of the optocoupler is connected to the controller;

[0022] The controller determines whether the power frequency voltage of the power supply is less than the predetermined threshold based on the electrical signal received from the secondary side of the optocoupler.

[0023] In one embodiment, the second resistance is 3 to 5 times the first resistance.

[0024] In one embodiment, the heating module includes a first heating element, a second heating element and a switch assembly; the controller connects the first heating element and the second heating element in parallel through the switch assembly so that the heating module has the first resistance value, and the controller connects the first heating element and the second heating element in series through the switch assembly so that the heating module has the second resistance value.

[0025] In one embodiment, the resistance values ​​of the first heating element and the second heating element are equal.

[0026] In one embodiment, the first heating element includes a first heating wire, and the second heating element includes a second heating wire; the first heating wire and the second heating wire are configured as a top-to-bottom stacked structure, or the first heating wire and the second heating wire are configured as a left-to-right arranged structure.

[0027] In one embodiment, the first heating wire is configured to directly transfer heat to the humidifying component, and the second heating wire is configured to indirectly transfer heat to the humidifying component at least partially through the first heating wire; or,

[0028] The first heating wire and the second heating wire are both configured to be able to directly transfer heat to the humidifying component.

[0029] In one embodiment, the heating module further includes a first substrate and a second substrate, the first substrate is provided with the first heating wire, the second substrate is provided with the second heating wire, the first substrate and the second substrate are stacked up and down and the first substrate is close to the humidification component relative to the second substrate.

[0030] In one embodiment, the heating module further includes a substrate having a left half region and a right half region, the left half region of the substrate is provided with the first heating wire, and the right half region of the substrate is provided with the second heating wire.

[0031] In one embodiment, the first power frequency voltage range includes 90V to 130V, preferably, the first power frequency voltage range includes 100V to 120V;

[0032] And / or, the second power frequency voltage range includes 190V~250V, preferably, the second power frequency voltage range includes 198V~242V.

[0033] In one embodiment, the predetermined threshold value has a value range of 140V to 180V.

[0034] According to a second aspect, an embodiment provides a breathing assistance system for delivering heated and humidified gas to a user, characterized in that the breathing assistance system includes a humidification component, a heating module, a temperature sensor, a power port, a power identification module and a controller;

[0035] The humidifying component has a shell, the shell defines a containing cavity and an inlet end and an outlet end communicated with the containing cavity; the inlet end is used to receive gas input from a gas source, and the containing cavity is used to contain water;

[0036] The heating module is used to heat the water in the containing chamber so that the breathing assistance system can output heated and humidified gas;

[0037] The temperature sensor is used to obtain specific temperatures related to the breathing assistance system; at least one of the specific temperatures is associated with the temperature of the heated and humidified gas;

[0038] The power port is used to receive power supply;

[0039] The power source identification module is used to identify at least one electrical parameter of the power source;

[0040] The controller is used to:

[0041] adjusting the heating power of the heating module by a first power adjustment mechanism according to the electrical parameter so that the heating power falls within a predetermined power range, and adjusting the heating power within the predetermined power range by a second power adjustment mechanism according to the electrical parameter and the specific temperature so that the heated and humidified gas reaches or approaches a target temperature;

[0042] The first power regulation mechanism is different from the second power regulation mechanism.

[0043] In one embodiment, when the heating module heats the water in the containing chamber at a target heating power, the temperature of the heated and humidified gas is the target temperature; the target heating power is within the predetermined power range, and the heating powers in the predetermined power range differ within a first deviation.

[0044] In one embodiment, the second power adjustment mechanism includes adjusting the heating power within the predetermined power range so that the heating power differs from the target heating power within a second deviation range, and the second deviation is smaller than the first deviation.

[0045] In one embodiment, the electrical parameters include the power frequency voltage of the power supply; and the controller uses the first power regulation mechanism to make the heating power of the heating module under different power frequency voltages fall within the predetermined power range.

[0046] In one embodiment, the breathing assistance system also includes a voltage conversion module; the first power regulation mechanism includes controlling the voltage conversion module according to the electrical parameters to convert the industrial frequency voltage of the power supply into a preset industrial frequency voltage for driving the heating module, so that the heating power of the heating module under different industrial frequency voltages falls within the predetermined power range.

[0047] In one embodiment, the first power regulation mechanism is used to regulate the instantaneous power output by the heating module at a predetermined moment, and the second power regulation mechanism is used to regulate the average power output by the heating module within a predetermined time period including the predetermined moment.

[0048] In one embodiment, the first power regulation mechanism includes changing the resistance of the heating module, and / or the second power regulation mechanism includes adjusting the duty cycle of the voltage or current driving the heating module.

[0049] According to a third aspect, an embodiment provides a method for adjusting heating power of a respiratory assistance system, wherein the respiratory assistance system is used to deliver heated and humidified gas to a user, the respiratory assistance system comprising a humidification component and a heating module, and the heating power adjustment method comprises:

[0050] obtaining at least one electrical parameter of the power source;

[0051] obtaining specific temperatures associated with the breathing assistance system, at least one of the specific temperatures being associated with a temperature of the heated and humidified gas;

[0052] adjusting the heating power of the heating module to a first heating power by a first power adjustment mechanism according to the electrical parameter, and adjusting the heating power of the heating module from the first heating power to a second heating power by a second power adjustment mechanism according to the electrical parameter and the specific temperature;

[0053] The adjustment resolution of the first power adjustment mechanism is lower than the adjustment resolution of the second power adjustment mechanism.

[0054] In one embodiment, the first power regulation mechanism includes changing the resistance of the heating module, and / or the second power regulation mechanism includes adjusting the duty cycle of the voltage or current driving the heating module.

[0055] In one embodiment, the electrical parameters include the industrial frequency voltage of the power supply; the specific temperature includes the temperature of the inlet end, the temperature of the outlet end, the temperature of the heating module, the temperature of the gas breathed by the user, the temperature of the user end of the breathing assistance system close to the user and / or the ambient temperature; the temperature of the heated and humidified gas includes the temperature of the heated and humidified gas at the outlet end, the temperature at the user end, and the temperature between the outlet end and the user end.

[0056] In one embodiment, when the heating module heats the water in the containing chamber with the target heating power, the temperature of the heated and humidified gas is the target temperature; the heating module heats the water in the containing chamber with the second heating power so that the temperature of the heated and humidified gas reaches or approaches the target temperature; wherein the first heating power is within a first deviation from the target heating power, the second heating power is within a second deviation from the target heating power, and the second deviation is smaller than the first deviation.

[0057] In one embodiment, the first power regulation mechanism is used to ensure that the first heating power of the heating module under different power frequency voltages is within the first deviation from the target heating power.

[0058] In one embodiment, the first power regulation mechanism includes converting the industrial frequency voltage of the power supply into a preset industrial frequency voltage according to the electrical parameters for driving the heating module, so that the first heating power of the heating module under different industrial frequency voltages is within the first deviation from the target heating power.

[0059] In one embodiment, the first power regulation mechanism is used to regulate the instantaneous power output by the heating module at a predetermined moment, and the second power regulation mechanism is used to regulate the average power output by the heating module within a predetermined time period including the predetermined moment.

[0060] In one embodiment, after determining that the power frequency voltage of the power supply is within a first power frequency voltage range, the resistance value of the heating module is changed to a first resistance value; after determining that the power frequency voltage of the power supply is within a second power frequency voltage range, the resistance value of the heating module is changed to a second resistance value; the first resistance value is smaller than the second resistance value.

[0061] In one embodiment, when the power frequency voltage of the power supply is less than a predetermined threshold, it is determined that the power frequency voltage of the power supply is within the first power frequency voltage range; otherwise, it is determined that the power frequency voltage of the power supply is within the second power frequency voltage range.

[0062] In one embodiment, the second resistance is 3 to 5 times the first resistance.

[0063] In one embodiment, the heating module includes a first heating element, a second heating element and a switch assembly;

[0064] The first heating element and the second heating element are connected in parallel through the switch component so that the heating module has the first resistance value, and the first heating element and the second heating element are connected in series through the switch component so that the heating module has the second resistance value.

[0065] In one embodiment, the first power frequency voltage range includes 90V to 130V, preferably, the first power frequency voltage range includes 100V to 120V;

[0066] And / or, the second power frequency voltage range includes 190V~250V, preferably, the second power frequency voltage range includes 198V~242V.

[0067] In one embodiment, the predetermined threshold value has a value range of 140V to 180V.

[0068] According to a fourth aspect, an embodiment provides a method for adjusting heating power of a respiratory assistance system, wherein the respiratory assistance system is used to deliver heated and humidified gas to a user, the respiratory assistance system comprising a humidification component and a heating module, and the heating power adjustment method comprises:

[0069] obtaining at least one electrical parameter of the power source;

[0070] obtaining specific temperatures associated with the breathing assistance system, at least one of the specific temperatures being associated with a temperature of the heated and humidified gas;

[0071] adjusting the heating power of the heating module by a first power adjustment mechanism according to the electrical parameter so that the heating power falls within a predetermined power range, and adjusting the heating power within the predetermined power range by a second power adjustment mechanism according to the electrical parameter and the specific temperature so that the heated and humidified gas reaches or approaches a target temperature;

[0072] The first power regulation mechanism is different from the second power regulation mechanism.

[0073] Based on the respiratory assistance system and heating power adjustment method thereof of the above-mentioned embodiment, a new method for adjusting the heating power of the respiratory assistance system is proposed, which is first adjusted based on a first power adjustment mechanism and then adjusted based on a second power adjustment mechanism, and has wider adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1 is a schematic structural diagram of a respiratory assistance system according to an embodiment;

[0075] Figure 2 is a schematic structural diagram of a respiratory assistance system according to an embodiment;

[0076] Figure 3 is a schematic structural diagram of a respiratory assistance system according to an embodiment;

[0077] Figure 4 is a schematic structural diagram of a respiratory assistance system according to an embodiment;

[0078] FIG. 5( a ) is a schematic diagram of a circuit-related structure in a respiratory assistance system according to an embodiment; FIG. 5( b ) is a schematic diagram of a circuit-related structure in a respiratory assistance system according to an embodiment;

[0079] Figure 6 A schematic diagram of a circuit-related structure in a respiratory assistance system according to an embodiment;

[0080] Figure 7 A schematic diagram of a circuit-related structure in a respiratory assistance system according to an embodiment;

[0081] Figure 8 A schematic diagram of a circuit-related structure in a respiratory assistance system according to an embodiment;

[0082] FIG. 9( a ) is a schematic diagram of the structure of a heating module according to an embodiment; FIG. 9( b ) is a schematic diagram of the structure of a heating module according to an embodiment;

[0083] Fig.10A flowchart of a method for adjusting heating power of a breathing assistance system according to an embodiment;

[0084] Fig.11 The present invention is a flow chart of a method for adjusting heating power of a breathing assistance system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0085] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0086] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0087] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0088] The respiratory assistance system generally uses a heating module, such as a heating plate with a heating wire, to evaporate water and deliver it to the user along with the gas. In this process, the gas input to the user needs to be controlled by relevant parameters, such as temperature and humidity. Compared with, for example, the temperature of the dialysis liquid is controlled by a dialysis machine (in order to make the temperature of the refluxed liquid as close as possible to the user's body temperature), the respiratory assistance system uses a heating plate to evaporate water and needs to control the parameters of the delivered gas, such as temperature and / or humidity. The control requirements and difficulty of the heating power of the heating plate are much higher than the control of the liquid temperature of the dialysis machine. The reason is, for example, that when the liquid temperature of the dialysis machine is controlled, the heating device directly acts on the liquid, while the heating device of the respiratory assistance system does not directly act on the gas; for another example, the temperature and humidity fluctuations of the gas are much higher than those of the liquid.

[0089] In addition, as an important product category, respiratory assistance systems are sold to different countries and regions around the world. However, the power frequency voltages in different countries and regions are often different. For example, my country uses 220V AC, the UK uses 230V AC, Japan uses 110V AC, the United States uses 120V AC, and so on. Since the heating power is the square of the voltage divided by the resistance, in order to make the heating power of the respiratory assistance system stable and the same in different countries, considering the different power frequency voltages, manufacturers currently generally implement this by configuring heating wires with different resistance values, that is, the resistance values ​​of the heating wires of the respiratory assistance systems sold to different countries and regions are different; however, this approach requires the design and production of different versions of respiratory assistance systems for different countries and regions, which makes the product management complex and increases costs in multiple dimensions such as material supply, product assembly, version control, inventory management, and sales orders.

[0090] At the same time, since the target temperature and humidity of the patient's inhaled gas are relatively stable, conventional respiratory assistance systems generally only need to be adjusted within a small temperature range, and the corresponding heating power adjustment range is also relatively limited. Therefore, the matching heating power adjustment method generally focuses more on precision rather than adjustment range. In other words, the required heating power adjustment resolution is higher. For example, common adjustment methods include adjusting the duty cycle.

[0091] Then, in order to match different power supply voltages to output stable heating power, the respiratory assistance system requires a power regulation mechanism with a wide range of adjustment amplitude; at the same time, in order for the patient to achieve the best treatment effect, the temperature and humidity of the output gas need to be finely controlled. At this time, the respiratory assistance system requires a power regulation mechanism with a higher adjustment resolution. Generally speaking, these two goals are difficult to achieve at the same time. Of course, in some cases, such as by adjusting the duty cycle, large-scale and fine adjustments can be achieved at the same time, but this will bring some derivative problems. For example, in order to provide a wide range of adjustment capabilities, the instantaneous output power of the respiratory assistance system needs to be set relatively high. At this time, there are higher requirements for the heat resistance of the system, which will pose greater challenges to controlling costs or improving safety.

[0092] In view of the above problems, some embodiments of the present invention provide a breathing assistance system and a heating power adjustment method thereof, which introduce two power adjustment mechanisms - a first power adjustment mechanism and a second power adjustment mechanism to coordinately adjust the heating power of the breathing assistance system.

[0093] In some embodiments, the breathing assistance system is used to heat and humidify the gas breathed by the user. Figure 1The breathing assistance system in some embodiments includes a humidification component 10, a heating module 20, a temperature sensor 30, a power port 40, a power identification module 50 and a controller 60, which are described in detail below.

[0094] The humidifying component 10 has a shell 11, which defines a accommodating chamber 11a and an inlet end 12 and an outlet end 13 connected to the accommodating chamber 11a; the inlet end 12 is used to receive gas input from a gas source, the accommodating chamber 11a is used to accommodate water, and the outlet end 13 is used to output the heated and humidified gas.

[0095] In some embodiments, please refer to Figure 2 The outlet end 13 of the respiratory assistance system can deliver heated and humidified gas to the user through the pipeline 14. In order to enable the user to better receive the heated and humidified gas, an interface accessory 15 can be connected to the other end of the pipeline 14. The user can conveniently receive the heated and humidified gas delivered by the respiratory assistance system through the pipeline 14 through the interface accessory 15. The interface accessory 15 can be, for example, a nasal mask, an oral and nasal mask, or a face mask.

[0096] The heating module 20 is used to heat the water in the accommodating chamber 11 a so that the breathing assistance system can output heated and humidified gas.

[0097] The temperature sensor 30 is used to obtain specific temperatures related to the breathing assistance system; in some embodiments, at least one of the specific temperatures is associated with the temperature of the heated and humidified gas. In some embodiments, the specific temperature includes any one or more of the temperature of the inlet end 12, the temperature of the outlet end 13, the temperature of the heating module 20, the temperature of the gas breathed by the user, the temperature of the user end of the breathing assistance system close to the user, and the ambient temperature. For example, in Figure 2 In the embodiment, the temperature sensor 30 is arranged at the outlet end 13 to obtain the temperature of the outlet end 13, but at the same time, the temperature sensor 30 can also be arranged at other positions to obtain the above-mentioned specific temperature. Of course, multiple temperature sensors 30 can also be included, each for obtaining different specific temperatures. In some embodiments, the target temperature can also include the target temperature of the heated and humidified gas at the outlet end 13 and / or the target temperature at the user end, etc.

[0098] In the above text, it is understood that the temperature of the user end of the breathing assistance system close to the user is used to represent the temperature of the gas actually delivered to the user; therefore, for example, Figure 2 In the figure, the temperature at the user end of the breathing assistance system close to the user can be the temperature obtained by setting a temperature sensor 30 at one end of the pipeline 14 close to the interface accessory 15, or it can be the temperature obtained by the temperature sensor 30 set at the interface accessory 15.

[0099] The power port 40 is used to receive power supply, such as power supply of industrial frequency power supply. The power supply received by the power port is used to supply power to at least the heating module 20.

[0100] The power identification module 50 is used to identify at least one electrical parameter of the power supply, such as power frequency voltage, real-time voltage, current, power, etc. The power frequency voltage and real-time voltage mentioned here are different. For example, the mains power in my country is 220V AC. If the power supply is the mains power, then its power frequency voltage is 220V. However, the mains power may fluctuate during the power supply process, resulting in the real-time voltage not being 220V.

[0101] Please refer to Figure 3 and Figure 4 , which is a three-dimensional schematic diagram of a respiratory assistance system in some embodiments. In some embodiments, the respiratory assistance system may further include a display screen 16 and an input button group 17. The display screen 16 is used to display content, such as various working parameters during the working process of the respiratory assistance system, and some operation interfaces; the input button group 17 is used for the operator to operate to input control instructions to the respiratory assistance system, such as the operator inputting and setting the target temperature of the heated and humidified gas to the respiratory assistance system through the input button group 17, and the operator inputting the working time to the respiratory assistance system through the input button group 17.

[0102] During operation, the accommodating chamber 11a of the humidifying component 10 contains water, the heating module 20 receives power from the power supply, and heats under the control of the controller 60 to vaporize the water in the accommodating chamber 11a; at the same time, the inlet end 12 of the humidifying component 10 receives gas input from the gas source, so that when the gas goes out from the outlet end 13, it is heated on the one hand and humidified on the other hand.

[0103] In some embodiments, the controller 60 adjusts the heating power of the heating module 20 according to the first power adjustment mechanism and the second power adjustment mechanism, which are described in detail below.

[0104] In some embodiments, the controller 60 adjusts the heating power of the heating module 20 by a first power adjustment mechanism according to the above-mentioned electrical parameters, so that the heating power falls within a predetermined power range, and adjusts the heating power within the above-mentioned predetermined power range by a second power adjustment mechanism according to the above-mentioned electrical parameters and the above-mentioned specific temperature, so that the gas reaches the target temperature at the outlet end 13 of the humidification component 10; wherein the first power adjustment mechanism is different from the second power adjustment mechanism.

[0105] In some embodiments, when the heating module 20 heats the water in the accommodating chamber 11a with the target heating power, the temperature of the heated and humidified gas is the target temperature; wherein the target heating power is within the predetermined power range, and the heating power difference within the predetermined power range is within the first deviation. In other words, in some embodiments, the controller 60 adjusts the heating power of the heating module 20 with the first power adjustment mechanism according to the electrical parameters, so that the heating power falls within the predetermined power range, so that the difference between the heating power and the target heating power is within the first deviation.

[0106] In some embodiments, the second power adjustment mechanism includes adjusting the heating power within the above-mentioned predetermined power range so that the heating power of the heating module 20 differs from the above-mentioned target heating power within a second deviation range, wherein the second deviation is smaller than the first deviation.

[0107] It can be seen that the controller 60 adjusts the heating power of the heating module 20 with the first power adjustment mechanism according to the above-mentioned electrical parameters, so that the heating power of the heating module 20 falls within a predetermined power range, for example, the difference with the target heating power is within a first deviation; then the controller 60 adjusts the heating power within the above-mentioned predetermined power range with the second power adjustment mechanism according to the above-mentioned electrical parameters and the above-mentioned specific temperature, so that the difference between the heating module 20 and the target heating power is within the second deviation; through the first power adjustment mechanism and the second power adjustment mechanism, the heating power of the heating module 20 is equal to or close to the target heating power, thereby achieving the target temperature of the heated and humidified gas.

[0108] In some embodiments, the electrical parameters include the power frequency voltage of the power supply, and the controller 60 uses a first power regulation mechanism to make the heating power of the heating module 20 under different power frequency voltages fall within the above-mentioned predetermined power range.

[0109] In some embodiments, the electrical parameters include real-time voltage or real-time current, and the controller 60 adjusts the heating power within the above-mentioned predetermined power range by a second power adjustment mechanism according to the above-mentioned specific temperature and real-time voltage; or, the controller 60 adjusts the heating power within the above-mentioned predetermined power range by a second power adjustment mechanism according to the above-mentioned specific temperature and real-time current.

[0110] In some embodiments, the first power regulation mechanism is used to regulate the instantaneous power output by the heating module 20 at a predetermined moment, and the second power regulation mechanism is used to regulate the average power output by the heating module 20 within a predetermined time period including the predetermined moment.

[0111] In some embodiments, the first power adjustment mechanism includes changing the resistance of the heating module 20. For example, please refer to Figure 5(a), the heating module 20 has an adjustable resistor device RH, and the resistance of the heating module 20 is changed by the adjustable resistor device RH. For another example, please refer to Figure 5(b), the heating module 20 has multiple heating elements 20a (such as heating wires), and the electrical connection mode between the multiple heating elements 20a is switched (for example, in series or in parallel) by the switch component 23, thereby changing the resistance of the heating module 20.

[0112] In some embodiments, please refer to Figure 6 , the first power regulation mechanism can be realized by the voltage conversion module 41, for example, the first power regulation mechanism includes controlling the voltage conversion module 41 according to the electrical parameters (such as the power frequency voltage) to convert the power frequency voltage of the power supply into a preset power frequency voltage for driving the heating module 20, so that the heating power of the heating module 20 under different power frequency voltages falls within the predetermined power range. For example, the power frequency voltages in many regions or countries are different, some are 380V, some are 240V, some are 230V, some are 220V, some are 110V, and so on; the first power regulation mechanism controls the conversion module 41 according to the power frequency voltage of the power supply to convert the power frequency voltage of the power supply into a preset power frequency voltage (such as 220V), so that the heating power of the heating module 20 under different power frequency voltages (for example, when the power frequency voltage of the power supply is 380V, 240V, 220V or 110V, etc.) falls within the predetermined power range.

[0113] In some embodiments, the second power regulation mechanism includes adjusting the duty cycle of the voltage or current driving the heating module 20 .

[0114] The above are some explanations of the first power regulation mechanism and the second power regulation mechanism, which will be further explained below in conjunction with the first heating power and the second heating power.

[0115] In some embodiments, the controller 60 adjusts the heating power of the heating module 20 to the first heating power by a first power adjustment mechanism according to the electrical parameters, and adjusts the heating power of the heating module 20 from the first heating power to the second heating power by a second power adjustment mechanism according to the electrical parameters and the above-mentioned specific temperature. In a more specific embodiment, the controller 60 adjusts the heating power of the heating module 20 to the first heating power by a first power adjustment mechanism according to the first electrical parameter (for example, it can be a power frequency voltage, etc.), and adjusts the heating power of the heating module 20 from the first heating power to the second heating power by a second power adjustment mechanism according to the second electrical parameter (for example, it can be a power frequency voltage, a real-time voltage, a real-time current, etc.) and the above-mentioned specific temperature. In some embodiments, the heating module 20 heats the water in the containing chamber with the second heating power so that the temperature of the heated and humidified gas reaches or approaches the target temperature; wherein the first heating power is within a first deviation from the target heating power, the second heating power is within a second deviation from the target heating power, and the second deviation is less than the first deviation.

[0116] In some embodiments, the regulation resolution of the first power regulation mechanism is lower than the regulation resolution of the second power regulation mechanism.

[0117] Understandably, the power calculation formula is:

[0118] P=U 2 / R=I 2 *R=U*I;

[0119] Therefore, the heating power P of the heating module 20 can be determined by the voltage U and the resistance R of the heating module 20, or by the current I and the resistance R of the heating module 20, or by the voltage U and the current I of the heating module 20. Therefore, in the process that the controller 60 first adjusts the heating power of the heating module 20 to the first heating power based on the first power adjustment mechanism, and then adjusts the heating power of the heating module 20 from the first heating power to the second heating power based on the second power adjustment mechanism, it can be seen that the controller 60 can determine the heating power of the heating module 20 based on any two of the voltage U, the current I and the resistance R of the heating module 20, for example, adjust its heating power to the first heating power, and then adjust the heating power of the heating module 20 to the second heating power based on the second power adjustment mechanism after reaching the first heating power; in this power adjustment process, it is possible that the heating module 20 is switched from the first heating power to the second heating power before actually outputting heat at the first heating power. For example, the voltage or resistance can be adjusted when no current is output, so that the heating power calculated according to the voltage and resistance changes, while the heating module still does not output heat at this time.

[0120] In some embodiments, the first power regulation mechanism is used to regulate the instantaneous power output by the heating module 20 at a predetermined moment. In some embodiments, the second power regulation mechanism is used to regulate the average power output by the heating module 20 within a predetermined time period including the predetermined moment.

[0121] In some embodiments, the controller 60 uses a first power regulation mechanism to make the first heating power of the heating module 20 under different power frequency voltages (referring to different power frequency voltages of different power supplies) differ from the target heating power within a first deviation. For example, whether the power frequency voltage of the power supply received by the power port 40 is 380V, 240V, 220V or 110V, the controller 60 uses a first power regulation mechanism to make the first heating power of the heating module 20 differ from the target heating power within a first deviation.

[0122] In some embodiments, the first power regulation mechanism includes changing the resistance of the heating module 20 .

[0123] For example, after determining that the power frequency voltage of the power supply is within the first power frequency voltage range, the controller 60 changes the resistance of the heating module 20 to the first resistance value, and after determining that the power frequency voltage of the power supply is within the second power frequency voltage range, the controller 60 changes the resistance of the heating module 20 to the second resistance value. In some embodiments, the voltage within the first power frequency voltage range is less than the voltage within the second power frequency voltage range. In some embodiments, the first resistance value is less than the second resistance value, for example, the second resistance value is 3 to 5 times the first resistance value.

[0124] The applicant counted the power frequency voltages used in different countries and regions in the world and divided them into two ranges, for example, 100V to 120V and 198V to 242V. Therefore, in some embodiments, it is not necessary to introduce a high-cost circuit to identify the specific value of the current power frequency voltage accurately, but to introduce a threshold for comparison to roughly locate the power frequency voltage, and adjust the heating power to the first heating power through the first power adjustment mechanism.

[0125] Therefore, in some embodiments, when the power frequency voltage of the power supply is less than a predetermined threshold, the controller 60 determines that the power frequency voltage of the power supply is in the first power frequency voltage range, otherwise, it determines that the power frequency voltage of the power supply is in the second power frequency voltage range.

[0126] In some embodiments, the first power frequency voltage range includes 90V to 130V; in some embodiments, the first power frequency voltage range includes 100V to 120V.

[0127] In some embodiments, the second power frequency voltage range includes 190V to 250V; in some embodiments, the second power frequency voltage range includes 198V to 242V.

[0128] In some embodiments, the predetermined threshold value ranges from 140V to 180V.

[0129] The above involves the detection of the power frequency voltage of the power supply and the resistance switching of the heating module 20, which are respectively explained below.

[0130] Please refer to Figure 7 In some embodiments, the power identification module 50 includes a rectifier circuit 51, a voltage divider circuit 52 and an optocoupler 53. The rectifier circuit 51 is used to rectify the power frequency voltage of the power supply. The voltage divider circuit 52 is used to divide the rectified voltage to provide it to the primary side of the optocoupler 53. The electrical signal of the secondary side of the optocoupler 53 is connected to the controller 60 by characterizing the parameters of the power supply. The controller 60 determines whether the power frequency voltage of the power supply is less than a predetermined threshold based on the electrical signal received from the secondary side of the optocoupler 45. It can be understood that Figure 7 It is only a schematic circuit block diagram and is not intended to limit the actual circuit connection relationship.

[0131] Assuming that the rectifier circuit 51 is a single-wave rectifier circuit in actual conditions, the primary side of the optocoupler 53 is turned on when it exceeds 10V, otherwise it is not turned on, and a suitable voltage divider circuit is designed based on this; therefore, taking the 220V industrial frequency voltage as an example, the voltage of the 220V industrial frequency voltage after passing through the rectifier circuit 51 is 0.45Urms, and the voltage divider value of the voltage divider circuit 52 is set. After the voltage divider voltage exceeds 10V of the voltage regulator tube, the primary diode of the optocoupler 53 is turned on, and the secondary transistor is turned on. At this time, the level output to the controller 60 is a high level, and the controller 60 determines that the industrial frequency voltage of the power supply is greater than the predetermined threshold value, and the industrial frequency voltage of the power supply is in the second industrial frequency voltage range; if the input is 110V mains electricity at this time, since the voltage divider voltage is less than 10V after the resistor voltage divider, the primary diode of the optocoupler 53 is not turned on, and the secondary transistor is low level. At this time, the level output to the controller 60 is a low level, and the controller 60 determines that the industrial frequency voltage of the power supply is less than the predetermined threshold value, and the industrial frequency voltage of the power supply is in the first industrial frequency voltage range.

[0132] In some embodiments, please refer to Figure 8 , the heating module 20 includes a first heating element 21, a second heating element 22 and a switch assembly 23; the controller 60 connects the first heating element 21 and the second heating element 22 in parallel through the switch assembly 23 so that the heating module 20 has a first resistance value, and the controller 60 connects the first heating element 21 and the second heating element 22 in series through the switch assembly 23 so that the heating module 20 has a second resistance value. In some embodiments, the resistance values ​​of the first heating element 21 and the second heating element 22 are equal, so that the second resistance value is four times the first resistance value.

[0133] When the resistance values ​​of the first heating element 21 and the second heating element 22 are equal, their resistance values ​​are switched through series-parallel connection based on the first adjustment mechanism, which not only makes the heating power of the heating module 20 under different industrial frequency voltages within the first deviation from the target heating power, but also the heating power of the two heating elements 21 and 22 is the same, meeting the considerations of heating heat transfer and heating element life.

[0134] In some embodiments, the first heating element 21 includes a first heating wire 21 a, and the second heating element 22 includes a second heating wire 22 a—for example, FIG. 9( a ) and FIG. 9( b ) are two examples.

[0135] In some embodiments, the first heating wire 21a and the second heating wire 22a are arranged in a top-to-bottom stacked structure.

[0136] In some embodiments, the first heating wire 21 a is configured to directly transfer heat to the humidifying component 10 , and the second heating wire 22 a is configured to indirectly transfer heat to the humidifying component 10 at least partially through the first heating wire 21 a .

[0137] In some embodiments, the heating module 20 also includes a first substrate 25 and a second substrate 26, the first substrate 25 is provided with a first heating wire 21a, the second substrate 26 is provided with a second heating wire 22a, the first substrate 25 and the second substrate 26 are stacked up and down and the first substrate 25 is close to the humidification component 10 relative to the second substrate 26.

[0138] FIG9(a) is an exploded schematic diagram of the heating module 20; the first heating wire 21a is wound around the first substrate 25, and the second heating wire 22a is wound around the second substrate 26. The first substrate 25 and the second substrate 26 may be mica boards, and a mica insulating board 81, a first substrate 25, a mica insulating board 81 and a second substrate 26 are sequentially arranged from near to far near the humidifying component 10; the four boards have four corresponding arrangement holes at the four corners, which are assembled by insulating ceramic beads 82, rivets 84 and gaskets 85, and then connected with wires 83a and 83b, and brought out to the circuit through the connector 86; it should be noted that the figure shows that the wire 83a leads out the two ends of the first heating wire 21a, and the wire 83b leads out the two ends of the second heating wire 22a, and then the series-parallel switching of the first heating wire 21a and the second heating wire 22a can be realized through the switch assembly 23.

[0139] In some embodiments, the first heating wire 21a and the second heating wire 22a are arranged in a left-right structure.

[0140] In some embodiments, both the first heating wire 21 a and the second heating wire 22 a are configured to directly transfer heat to the humidifying component 10 .

[0141] In some embodiments, the heating module 20 further includes a substrate 27 having a left half region and a right half region. The left half region of the substrate 27 is provided with a first heating wire 21 a , and the right half region of the substrate 27 is provided with a second heating wire 22 a .

[0142] Fig. 9(b) is a schematic diagram of the heating module 20, showing a substrate 27, which may be a mica board, with wires 87a leading out from both ends of the first heating wire 21a, and wires 87b leading out from both ends of the second heating wire 22a, which are connected to the circuit through connectors 88; wherein, the series-parallel switching of the first heating wire 21a and the second heating wire 22a can be achieved through the switch assembly 23.

[0143] The above is some description of the structure of the heating module 20 .

[0144] In some embodiments, the respiratory assistance system may further include a voltage conversion module 41, and the voltage conversion module 41 is used to implement a first power regulation mechanism, for example, the first power regulation mechanism includes controlling the voltage conversion module 41 according to electrical parameters (such as power frequency voltage) to convert the power frequency voltage of the power supply into a preset power frequency voltage for driving the heating module 20, so that the heating power of the heating module 20 under different power frequency voltages falls within a predetermined power range. For example, the power frequency voltages in many regions or countries are different, some are 380V, some are 240V, some are 230V, some are 220V, some are 110V, and so on; the first power regulation mechanism controls the conversion module 41 according to the power frequency voltage of the power supply to convert the power frequency voltage of the power supply into a preset power frequency voltage (such as 220V), so that the heating power of the heating module 20 under different power frequency voltages (for example, when the power frequency voltage of the power supply is 380V, 240V, 220V or 110V, etc.) falls within the predetermined power range.

[0145] It can be seen that the controller 60 adjusts the heating power of the heating module 20 to the first heating power according to the electrical parameters such as the power frequency voltage identified by the power identification module 50 using the first power adjustment mechanism, so that the heating power of the heating module 20 under different power frequency voltages falls within a predetermined power range, thereby generating a version of the breathing assistance system that can cope with conditions in different countries and regions.

[0146] Through the first power adjustment mechanism, the heating power of the heating module 20 can be adjusted to the first heating power, and the first heating power is within the first deviation from the target heating power. However, in order to make the heating power closer to the target heating power, it is necessary to adjust it based on the second power adjustment mechanism; in some embodiments, taking the resistance values ​​of the first heating element 21 and the second heating element 22 as R as an example, assuming that the industrial frequency voltage is 220V, the target heating power is achieved when the heating elements 21 and 22 are connected in series. At this time, if the industrial frequency voltage of the input power supply is 220V, the controller 60 switches the first heating element 21 and the second heating element 22 to be connected in series, and the target heating power is achieved. However, if the industrial frequency voltage of the input power supply is 210V or 230V, etc., after the controller 60 switches the first heating element 21 and the second heating element 22 to be connected in series, the heating power of the heating module 20 is not the target heating power. Similarly, assuming that the industrial frequency voltage of the input power supply is 11 When the voltage of the input power supply is 0V, the controller 60 switches the first heating element 21 and the second heating element 22 into parallel connection, and the target heating power is achieved. At this time, if the voltage of the input power supply is 120V, the controller 60 switches the first heating element 21 and the second heating element 22 into parallel connection, and the heating power of the heating module 20 is not the target heating power. In addition, even if the input power frequency voltage is 220V or 110V at this time, the actual voltage may fluctuate. Therefore, taking the above-mentioned situations into consideration, in some embodiments, after the heating power of the heating module 20 can be adjusted to the first heating power through the first power adjustment mechanism, so that the difference from the target heating power is within the first deviation, then according to the electrical parameters of the input power supply (for example, the power frequency voltage, the real-time voltage, the real-time current, etc.), the heating power of the heating module 20 can be adjusted from the first heating power to the second heating power through the second power adjustment mechanism, so that the difference from the target heating power is within the second deviation.

[0147] In some embodiments, even if the electrical parameters of the input power supply are relatively stable, it is difficult to meet the output target temperature requirement exactly, and the controller 60 needs to adjust the heating power based on the second power adjustment mechanism according to the detected specific temperature. For example, assuming that the target temperature of the heated and humidified gas at the user end is 37 degrees, and the respiratory assistance system is provided with a temperature sensor at the outlet end 13, and detects that the temperature at the outlet end 13 is only 36 degrees, it can be determined that the target heating power is higher than the current heating power adjusted by the first power adjustment mechanism, then it is necessary to increase the heating power based on the second power adjustment mechanism, and control it to be within the second deviation from the target heating power. At this time, the temperature at the outlet end 13 is detected again, and it is found that it has risen to 38 degrees. Considering the heat loss during the gas transmission process, it can be inferred that the temperature of the heated and humidified gas at the user end is within the ideal deviation from 37 degrees. Therefore, further adjusting the heating power according to the specific temperature with the second power adjustment mechanism can make the heated and humidified gas reach or approach the target temperature.

[0148] It can be understood that, for the sake of convenience, the above text separately describes the case of adjusting the heating power according to the electrical parameters and the case of adjusting the heating power according to the specific temperature, but these two processes can be performed simultaneously, that is, the controller 60 can simultaneously calculate the target heating power required to reach or approach the target temperature based on the electrical parameters and the specific temperature. Of course, the controller 60 can also calculate step by step based on the electrical parameters and the specific temperature to finally obtain a required target heating power.

[0149] In some embodiments, the second power regulation mechanism includes adjusting the duty cycle of the voltage or current driving the heating module 20 .

[0150] In some embodiments of the present application, a method for adjusting the heating power of a respiratory assistance system is also provided. The respiratory assistance system is used to deliver heated and humidified gas to a user. The respiratory assistance system includes a humidification component 10 and a heating module 20. The respiratory assistance system may be the respiratory assistance system disclosed herein.

[0151] Please refer to Fig.10 , the heating power adjustment method in some embodiments comprises the following steps:

[0152] Step 100: Obtain at least one electrical parameter of a power source.

[0153] Step 110: Acquire specific temperatures related to the breathing assistance system, wherein at least one of the specific temperatures is associated with the temperature of the heated and humidified gas.

[0154] In some embodiments, the specific temperature includes, for example, any one or more of the temperature of the inlet end 12, the temperature of the outlet end 13, the temperature of the heating module 20, the temperature of the gas breathed by the user, the temperature of the user end of the respiratory assistance system close to the user, and the ambient temperature. Therefore, in some embodiments, the temperature associated with the temperature of the heated and humidified gas (or the temperature of the heated and humidified gas) in the specific temperature may include the temperature of the heated and humidified gas at the outlet end 13, the temperature at the user end, and the temperature between the outlet end 13 and the user end. In some embodiments, the target temperature may also include the target temperature of the heated and humidified gas at the outlet end 13 and / or the target temperature at the user end, etc.

[0155] Step 120: adjusting the heating power of the heating module 20 by a first power adjustment mechanism according to the electrical parameters, so that the heating power falls within a predetermined power range.

[0156] In some embodiments, when the heating module 20 operates at the target heating power, the temperature of the heated and humidified gas is the target temperature; wherein the target heating power is within the predetermined power range, and the heating powers within the predetermined power range differ within the first deviation. In other words, in some embodiments, step 120 adjusts the heating power of the heating module 20 according to the electrical parameters using the first power adjustment mechanism, so that the heating power falls within the predetermined power range, so that the difference between the heating power and the target heating power is within the first deviation.

[0157] In some embodiments, the electrical parameter includes the power frequency voltage of the power supply, and step 120 uses a first power regulation mechanism to make the heating power of the heating module 20 under different power frequency voltages fall within the above-mentioned predetermined power range.

[0158] Step 130: Adjust the heating power within the above-mentioned predetermined power range according to the electrical parameters and the specific temperature with a second power adjustment mechanism so that the heated and humidified gas reaches or approaches the target temperature; wherein the first power adjustment mechanism is different from the second power adjustment mechanism.

[0159] In some embodiments, the second power adjustment mechanism includes adjusting the heating power within the above-mentioned predetermined power range so that the heating power of the heating module 20 differs from the above-mentioned target heating power within a second deviation range, wherein the second deviation is smaller than the first deviation.

[0160] It can be seen that step 120 adjusts the heating power of the heating module 20 by the first power adjustment mechanism according to the above-mentioned electrical parameters, so that the heating power of the heating module 20 falls within a predetermined power range, for example, the difference with the target heating power is within a first deviation; then step 130 adjusts the heating power within the above-mentioned predetermined power range by the second power adjustment mechanism according to the above-mentioned electrical parameters and the above-mentioned specific temperature, so that the difference between the heating module 20 and the target heating power is within the second deviation; through the first power adjustment mechanism and the second power adjustment mechanism, the heating power of the heating module 20 is equal to or close to the target heating power, so that the heated and humidified gas reaches the target temperature.

[0161] In some embodiments, the electrical parameters include real-time voltage or real-time current, and step 130 adjusts the heating power within the above-mentioned predetermined power range by a second power adjustment mechanism according to the above-mentioned specific temperature and real-time voltage; or, step 130 adjusts the heating power within the above-mentioned predetermined power range by a second power adjustment mechanism according to the above-mentioned specific temperature and real-time current.

[0162] In some embodiments, the first power regulation mechanism is used to regulate the instantaneous power output by the heating module 20 at a predetermined moment, and the second power regulation mechanism is used to regulate the average power output by the heating module 20 within a predetermined time period including the predetermined moment.

[0163] In some embodiments, the first power regulation mechanism includes changing the resistance of the heating module 20 ; in some embodiments, the second power regulation mechanism includes adjusting the duty cycle of the voltage or current driving the heating module 20 .

[0164] Please refer to Fig.11 , the heating power adjustment method in some embodiments comprises the following steps:

[0165] Step 200: Obtain at least one electrical parameter of a power port.

[0166] Step 210: Acquire specific temperatures related to the breathing assistance system, wherein at least one of the specific temperatures is associated with the temperature of the heated and humidified gas.

[0167] In some embodiments, the specific temperature includes, for example, any one or more of the temperature of the inlet end 12, the temperature of the outlet end 13, the temperature of the heating module 20, the temperature of the gas breathed by the user, the temperature of the user end of the respiratory assistance system close to the user, and the ambient temperature. Therefore, in some embodiments, the temperature associated with the temperature of the heated and humidified gas (or the temperature of the heated and humidified gas) in the specific temperature may include the temperature of the heated and humidified gas at the outlet end 13, the temperature at the user end, and the temperature between the outlet end 13 and the user end.

[0168] Step 220: adjusting the heating power of the heating module 20 to the first heating power by using the first power adjustment mechanism according to the electrical parameters.

[0169] Step 230: adjusting the heating power of the heating module 20 from the first heating power to the second heating power by using a second power adjustment mechanism according to the electrical parameters and the specific temperature.

[0170] In some embodiments, the regulation resolution of the first power regulation mechanism is lower than the regulation resolution of the second power regulation mechanism.

[0171] In some embodiments, step 220 uses a first power regulation mechanism to make the first heating power of the heating module 20 under different power frequency voltages (referring to different power frequency voltages of different power supplies) within a first deviation from the target heating power. For example, whether the power frequency voltage of the power supply is 380V, 240V, 220V or 110V, step 220 uses a first power regulation mechanism to make the first heating power of the heating module 20 within a first deviation from the target heating power.

[0172] In some embodiments, the first power regulation mechanism includes changing the resistance of the heating module 20 .

[0173] For example, after determining that the power frequency voltage of the power supply is within the first power frequency voltage range, step 220 changes the resistance of the heating module 20 to the first resistance, and after determining that the power frequency voltage of the power supply is within the second power frequency voltage range, step 220 changes the resistance of the heating module 20 to the second resistance. In some embodiments, the voltage within the first power frequency voltage range is less than the voltage within the second power frequency voltage range. In some embodiments, the first resistance is less than the second resistance, for example, the second resistance is 3 to 5 times the first resistance.

[0174] The applicant counted the power frequency voltages used in different countries and regions in the world and divided them into two ranges, for example, 100V to 120V and 198V to 242V. Therefore, in some embodiments, it is not necessary to introduce a high-cost circuit to identify the specific value of the current power frequency voltage accurately, but to introduce a threshold for comparison to roughly locate the power frequency voltage, and adjust the heating power to the first heating power through the first power adjustment mechanism.

[0175] Therefore, in some embodiments, when the power frequency voltage of the power supply is less than a predetermined threshold, step 220 determines that the power frequency voltage of the power supply is in a first power frequency voltage range, otherwise, it determines that the power frequency voltage of the power supply is in a second power frequency voltage range.

[0176] In some embodiments, the first power frequency voltage range includes 90V to 130V; in some embodiments, the first power frequency voltage range includes 100V to 120V.

[0177] In some embodiments, the second power frequency voltage range includes 190V to 250V; in some embodiments, the second power frequency voltage range includes 198V to 242V.

[0178] In some embodiments, the predetermined threshold value ranges from 140V to 180V.

[0179] In some embodiments, the heating module 20 includes a first heating element 21, a second heating element 22, and a switch assembly 23; in step 220, the first heating element 21 and the second heating element 22 are connected in parallel through the switch assembly 23 so that the heating module 20 has a first resistance value, and in step 220, the first heating element 21 and the second heating element 22 are connected in series through the switch assembly 23 so that the heating module 20 has a second resistance value. In some embodiments, the resistance values ​​of the first heating element 21 and the second heating element 22 are equal, so that the second resistance value is four times the first resistance value.

[0180] In some embodiments, step 220 implements a first power regulation mechanism through a voltage conversion module 41, for example, the first power regulation mechanism includes controlling the voltage conversion module 41 according to electrical parameters (such as power frequency voltage) to convert the power frequency voltage of the power supply into a preset power frequency voltage for driving the heating module 20, so that the heating power of the heating module 20 under different power frequency voltages falls within a predetermined power range. For example, the power frequency voltages in many regions or countries are different, some are 380V, some are 240V, some are 230V, some are 220V, some are 110V, and so on; the first power regulation mechanism controls the conversion module 41 according to the power frequency voltage of the power supply to convert the power frequency voltage of the power supply into a preset power frequency voltage (such as 220V), so that the heating power of the heating module 20 under different power frequency voltages (for example, when the power frequency voltage of the power supply is 380V, 240V, 220V or 110V, etc.) falls within the predetermined power range.

[0181] In some embodiments, the second power regulation mechanism includes adjusting a duty cycle of a voltage or a current driving the heating module.

[0182] In some embodiments, the first power regulation mechanism is used to regulate the instantaneous power output by the heating module 20 at a predetermined moment. In some embodiments, the second power regulation mechanism is used to regulate the average power output by the heating module 20 within a predetermined time period including the predetermined moment.

[0183] This document is described with reference to various exemplary embodiments. However, those skilled in the art will recognize that changes and modifications may be made to the exemplary embodiments without departing from the scope of this document. For example, various operating steps and components for performing the operating steps may be implemented in different ways (e.g., one or more steps may be deleted, modified, or incorporated into other steps) depending on the specific application or considering any number of cost functions associated with the operation of the system.

[0184] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. In addition, as understood by those skilled in the art, the principles of this article can be reflected in a computer program product on a computer-readable storage medium, which is pre-installed with a computer-readable program code. Any tangible, non-temporary computer-readable storage medium can be used, including magnetic storage devices (hard disks, floppy disks, etc.), optical storage devices (CD to ROM, DVD, Blu Ray disks, etc.), flash memory and / or the like. These computer program instructions can be loaded onto a general-purpose computer, a special-purpose computer or other programmable data processing device to form a machine, so that these instructions executed on a computer or other programmable data processing device can generate a device that implements a specified function. These computer program instructions can also be stored in a computer-readable memory, which can instruct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory can form a manufactured product, including an implementation device that implements a specified function. Computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operating steps are performed on a computer or other programmable device to generate a computer-implemented process, so that the instructions executed on a computer or other programmable device can provide steps for implementing a specified function.

[0185] Although the principles of this invention have been shown in various embodiments, many modifications of structures, arrangements, proportions, elements, materials and components particularly suitable for specific environments and operational requirements can be used without departing from the principles and scope of this invention. The above modifications and other changes or amendments will be included in the scope of this invention.

[0186] The foregoing specific description has been described with reference to various embodiments. However, those skilled in the art will recognize that various modifications and changes can be made without departing from the scope of the present disclosure. Therefore, the consideration of the present disclosure will be illustrative rather than restrictive, and all these modifications will be included in its scope. Similarly, the advantages, other advantages and solutions to the problems of various embodiments have been described above. However, the benefits, advantages, solutions to the problems and any elements that can produce these, or make them more clear, should not be interpreted as critical, necessary or necessary. The term "include" and any other variants used in this article are all non-exclusive inclusions, so that the process, method, article or device including the list of elements not only includes these elements, but also includes other elements that are not explicitly listed or do not belong to the process, method, system, article or device. In addition, the term "coupled" and any other variants used in this article refer to physical connections, electrical connections, magnetic connections, optical connections, communication connections, functional connections and / or any other connections.

[0187] Those skilled in the art will appreciate that many changes may be made to the details of the above-described embodiments without departing from the basic principles of the invention. Therefore, the scope of the present invention should be determined solely by the claims.

Claims

1. A breathing assistance system for heating and humidifying the gas breathed by a user, characterized in that: The respiratory assistance system includes a humidification component, a heating module, a temperature sensor, a power port, a power identification module and a controller; The humidifying component has a shell, the shell defines a containing cavity and an inlet end and an outlet end communicated with the containing cavity; the inlet end is used to receive gas input from a gas source, and the containing cavity is used to contain water; The heating module is used to heat the water in the containing chamber so that the breathing assistance system can output heated and humidified gas; The temperature sensor is used to obtain specific temperatures about the breathing assistance system, at least one of the specific temperatures being associated with the temperature of the heated and humidified gas; The power port is used to receive power supply; The power source identification module is used to identify at least one electrical parameter of the power source; The controller is used to: adjusting the heating power of the heating module to a first heating power by a first power adjustment mechanism according to the electrical parameter, and adjusting the heating power of the heating module from the first heating power to a second heating power by a second power adjustment mechanism according to the electrical parameter and the specific temperature; The adjustment resolution of the first power adjustment mechanism is lower than the adjustment resolution of the second power adjustment mechanism.

2. The breathing assistance system according to claim 1, characterized in that: The first power regulation mechanism includes changing the resistance of the heating module, and / or the second power regulation mechanism includes adjusting the duty cycle of the voltage or current driving the heating module.

3. The breathing assistance system according to claim 1, characterized in that: The electrical parameters include the industrial frequency voltage of the power supply; the specific temperature includes the temperature of the inlet end, the temperature of the outlet end, the temperature of the heating module, the temperature of the gas breathed by the user, the temperature of the user end of the breathing assistance system close to the user and / or the ambient temperature; the temperature of the heated and humidified gas includes the temperature of the heated and humidified gas at the outlet end, the temperature at the user end, and the temperature between the outlet end and the user end.

4. The breathing assistance system according to any one of claims 1 to 3, characterized in that: When the heating module heats the water in the containing chamber with the target heating power, the temperature of the heated and humidified gas is the target temperature; the heating module heats the water in the containing chamber with the second heating power so that the temperature of the heated and humidified gas reaches or approaches the target temperature; wherein, the first heating power is within a first deviation from the target heating power, the second heating power is within a second deviation from the target heating power, and the second deviation is smaller than the first deviation.

5. The breathing assistance system according to claim 4, characterized in that: The controller uses the first power adjustment mechanism to ensure that the first heating power of the heating module at different power frequency voltages is within the first deviation from the target heating power.

6. The breathing assistance system according to claim 4, characterized in that: It also includes a voltage conversion module; the first power regulation mechanism includes controlling the voltage conversion module according to the electrical parameters to convert the industrial frequency voltage of the power supply into a preset industrial frequency voltage for driving the heating module, so that the first heating power of the heating module under different industrial frequency voltages is within the first deviation from the target heating power.

7. The breathing assistance system according to any one of claims 1 to 6, characterized in that: The first power regulation mechanism is used to regulate the instantaneous power output by the heating module at a predetermined moment, and the second power regulation mechanism is used to regulate the average power output by the heating module within a predetermined time period including the predetermined moment.

8. The breathing assistance system according to claim 2 or 7, characterized in that: After determining that the power frequency voltage of the power supply is within a first power frequency voltage range, the controller changes the resistance of the heating module to a first resistance value; after determining that the power frequency voltage of the power supply is within a second power frequency voltage range, the controller changes the resistance of the heating module to a second resistance value; the first resistance value is smaller than the second resistance value.

9. The breathing assistance system according to claim 8, characterized in that: When the power frequency voltage of the power supply is less than a predetermined threshold, the controller determines that the power frequency voltage of the power supply is within the first power frequency voltage range; otherwise, the controller determines that the power frequency voltage of the power supply is within the second power frequency voltage range.

10. The breathing assistance system according to claim 9, characterized in that: The power identification module comprises a rectifier circuit, a voltage divider circuit and an optical coupler; the rectifier circuit is used to rectify the power frequency voltage of the power supply, the voltage divider circuit is used to divide the rectified voltage to provide it to the primary side of the optical coupler, and the secondary side of the optical coupler is connected to the controller; The controller determines whether the power frequency voltage of the power supply is less than the predetermined threshold based on the electrical signal received from the secondary side of the optocoupler.

11. The breathing assistance system according to claim 8, characterized in that: The second resistance is 3 to 5 times the first resistance.

12. The breathing assistance system according to claim 8 or 11, characterized in that: The heating module includes a first heating element, a second heating element and a switch assembly; the controller connects the first heating element and the second heating element in parallel through the switch assembly so that the heating module has the first resistance value, and the controller connects the first heating element and the second heating element in series through the switch assembly so that the heating module has the second resistance value.

13. The breathing assistance system according to claim 12, characterized in that: The resistance values ​​of the first heating element and the second heating element are equal.

14. The breathing assistance system according to claim 12, characterized in that: The first heating element includes a first heating wire, and the second heating element includes a second heating wire; the first heating wire and the second heating wire are arranged in a vertically stacked structure, or the first heating wire and the second heating wire are arranged in a left-right structure.

15. The breathing assistance system according to claim 14, characterized in that: The first heating wire is configured to directly transfer heat to the humidifying component, and the second heating wire is configured to indirectly transfer heat to the humidifying component at least partially through the first heating wire; or, The first heating wire and the second heating wire are both configured to be able to directly transfer heat to the humidifying component.

16. The breathing assistance system according to claim 14 or 15, characterized in that: The heating module further includes a first substrate and a second substrate. The first substrate is provided with the first heating wire, the second substrate is provided with the second heating wire, the first substrate and the second substrate are stacked up and down and the first substrate is closer to the humidifying component than the second substrate.

17. The breathing assistance system according to claim 14 or 15, characterized in that: The heating module further includes a substrate having a left half region and a right half region. The left half region of the substrate is provided with the first heating wire, and the right half region of the substrate is provided with the second heating wire.

18. The breathing assistance system according to claim 8, characterized in that: The first power frequency voltage range includes 90V to 130V, preferably, the first power frequency voltage range includes 100V to 120V; And / or, the second power frequency voltage range includes 190V~250V, preferably, the second power frequency voltage range includes 198V~242V.

19. The breathing assistance system according to claim 9, characterized in that: The predetermined threshold value has a value range of 140V to 180V.

20. A breathing assistance system for delivering heated and humidified gas to a user, characterized in that: The respiratory assistance system includes a humidification component, a heating module, a temperature sensor, a power port, a power identification module and a controller; The humidifying component has a shell, the shell defines a containing cavity and an inlet end and an outlet end communicated with the containing cavity; the inlet end is used to receive gas input from a gas source, and the containing cavity is used to contain water; The heating module is used to heat the water in the containing chamber so that the breathing assistance system can output heated and humidified gas; The temperature sensor is used to obtain specific temperatures related to the breathing assistance system; at least one of the specific temperatures is associated with the temperature of the heated and humidified gas; The power port is used to receive power supply; The power source identification module is used to identify at least one electrical parameter of the power source; The controller is used to: adjusting the heating power of the heating module by a first power adjustment mechanism according to the electrical parameter so that the heating power falls within a predetermined power range, and adjusting the heating power within the predetermined power range by a second power adjustment mechanism according to the electrical parameter and the specific temperature so that the heated and humidified gas reaches or approaches a target temperature; The first power regulation mechanism is different from the second power regulation mechanism.

21. The breathing assistance system according to claim 20, characterized in that When the heating module heats the water in the containing chamber at a target heating power, the temperature of the heated and humidified gas is the target temperature; the target heating power is within the predetermined power range, and the heating powers in the predetermined power range differ within a first deviation.

22. The breathing assistance system according to claim 21, characterized in that The second power adjustment mechanism includes adjusting the heating power within the predetermined power range so that the heating power differs from the target heating power within a second deviation range, and the second deviation is smaller than the first deviation.

23. The breathing assistance system according to claim 21, characterized in that The electrical parameters include the power frequency voltage of the power supply; the controller uses the first power adjustment mechanism to make the heating power of the heating module under different power frequency voltages fall within the predetermined power range.

24. The breathing assistance system according to claim 23, characterized in that It also includes a voltage conversion module; the first power regulation mechanism includes controlling the voltage conversion module according to the electrical parameters to convert the industrial frequency voltage of the power supply into a preset industrial frequency voltage for driving the heating module, so that the heating power of the heating module under different industrial frequency voltages falls within the predetermined power range.

25. The breathing assistance system according to claim 20, characterized in that The first power regulation mechanism is used to regulate the instantaneous power output by the heating module at a predetermined moment, and the second power regulation mechanism is used to regulate the average power output by the heating module within a predetermined time period including the predetermined moment.

26. A breathing assistance system according to any one of claims 20 to 25, characterized in that The first power regulation mechanism includes changing the resistance of the heating module, and / or the second power regulation mechanism includes adjusting the duty cycle of the voltage or current driving the heating module.

27. A method for adjusting heating power of a breathing assistance system, wherein the breathing assistance system is used to deliver heated and humidified gas to a user, the breathing assistance system comprising a humidifying component and a heating module, characterized in that: The heating power adjustment method comprises: obtaining at least one electrical parameter of the power source; obtaining specific temperatures associated with the breathing assistance system, at least one of the specific temperatures being associated with a temperature of the heated and humidified gas; adjusting the heating power of the heating module to a first heating power by a first power adjustment mechanism according to the electrical parameter, and adjusting the heating power of the heating module from the first heating power to a second heating power by a second power adjustment mechanism according to the electrical parameter and the specific temperature; The adjustment resolution of the first power adjustment mechanism is lower than the adjustment resolution of the second power adjustment mechanism.

28. The heating power adjustment method according to claim 27, characterized in that: The first power regulation mechanism includes changing the resistance of the heating module, and / or the second power regulation mechanism includes adjusting the duty cycle of the voltage or current driving the heating module.

29. The heating power adjustment method according to claim 27, characterized in that: The electrical parameters include the industrial frequency voltage of the power supply; the specific temperature includes the temperature of the inlet end, the temperature of the outlet end, the temperature of the heating module, the temperature of the gas breathed by the user, the temperature of the user end of the breathing assistance system close to the user and / or the ambient temperature; the temperature of the heated and humidified gas includes the temperature of the heated and humidified gas at the outlet end, the temperature at the user end, and the temperature between the outlet end and the user end.

30. The heating power adjustment method according to claims 27 to 29, characterized in that: When the heating module heats the water in the containing chamber with the target heating power, the temperature of the heated and humidified gas is the target temperature; the heating module heats the water in the containing chamber with the second heating power so that the temperature of the heated and humidified gas reaches or approaches the target temperature; wherein, the first heating power is within a first deviation from the target heating power, the second heating power is within a second deviation from the target heating power, and the second deviation is smaller than the first deviation.

31. The heating power adjustment method according to claim 30, characterized in that: The first power regulation mechanism is used to ensure that the first heating power of the heating module under different power frequency voltages is within the first deviation from the target heating power.

32. The heating power adjustment method according to claim 30, characterized in that: The first power regulation mechanism includes converting the industrial frequency voltage of the power supply into a preset industrial frequency voltage according to the electrical parameters for driving the heating module, so that the first heating power of the heating module under different industrial frequency voltages is within the first deviation from the target heating power.

33. The heating power adjustment method according to any one of claims 27 to 32, characterized in that: The first power regulation mechanism is used to regulate the instantaneous power output by the heating module at a predetermined moment, and the second power regulation mechanism is used to regulate the average power output by the heating module within a predetermined time period including the predetermined moment.

34. The heating power adjustment method according to claim 28 or 33, characterized in that: After determining that the power frequency voltage of the power supply is within a first power frequency voltage range, the resistance value of the heating module is changed to a first resistance value; after determining that the power frequency voltage of the power supply is within a second power frequency voltage range, the resistance value of the heating module is changed to a second resistance value; the first resistance value is smaller than the second resistance value.

35. The heating power adjustment method according to claim 34, characterized in that: When the power frequency voltage of the power supply is less than a predetermined threshold, it is determined that the power frequency voltage of the power supply is within the first power frequency voltage range; otherwise, it is determined that the power frequency voltage of the power supply is within the second power frequency voltage range.

36. The heating power adjustment method according to claim 34, characterized in that: The second resistance is 3 to 5 times the first resistance.

37. The heating power adjustment method according to claim 34, characterized in that: The heating module comprises a first heating element, a second heating element and a switch assembly; The first heating element and the second heating element are connected in parallel through the switch component so that the heating module has the first resistance value, and the first heating element and the second heating element are connected in series through the switch component so that the heating module has the second resistance value.

38. The heating power adjustment method according to claim 34, characterized in that: The first power frequency voltage range includes 90V to 130V, preferably, the first power frequency voltage range includes 100V to 120V; And / or, the second power frequency voltage range includes 190V~250V, preferably, the second power frequency voltage range includes 198V~242V.

39. The heating power adjustment method according to claim 35, characterized in that: The predetermined threshold value has a value range of 140V to 180V.

40. A method for adjusting heating power of a breathing assistance system, wherein the breathing assistance system is used to deliver heated and humidified gas to a user, the breathing assistance system comprising a humidification component and a heating module, characterized in that: The heating power adjustment method comprises: obtaining at least one electrical parameter of the power source; obtaining specific temperatures associated with the breathing assistance system, at least one of the specific temperatures being associated with a temperature of the heated and humidified gas; adjusting the heating power of the heating module by a first power adjustment mechanism according to the electrical parameter so that the heating power falls within a predetermined power range, and adjusting the heating power within the predetermined power range by a second power adjustment mechanism according to the electrical parameter and the specific temperature so that the heated and humidified gas reaches or approaches a target temperature; The first power regulation mechanism is different from the second power regulation mechanism.

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