Temperature control method, device, ventilation apparatus, and readable storage medium

Abstract

This invention provides a temperature control method, apparatus, ventilation device, and readable storage medium. The temperature control method is applied to a ventilation device, which includes a temperature measuring device, a device body, and a heating pipe. The method includes: acquiring the gas temperature at the inlet end of the heating pipe detected by the temperature measuring device, as the inlet temperature of the heating pipe; placing the temperature measuring device at a designated location on the ventilation device, the distance between the designated location and the inlet end of the heating pipe being less than the distance between the outlet end of the heating pipe and the inlet end of the heating pipe; determining the heating power of the heating pipe based on the inlet temperature and a target temperature at the output end of the ventilation device; and heating the gas in the heating pipe according to the heating power, so that the output end of the ventilation device provides gas at the target temperature. This reduces the manufacturing cost of the heating pipe.

Description

Technical Field

[0001] This invention relates to the field of ventilation equipment, and particularly to a temperature control method, apparatus, ventilation equipment, and readable storage medium. Background Technology

[0002] Ventilation equipment is a type of equipment that heats gas and outputs gas that meets requirements. Existing ventilation equipment typically includes a main unit for conveying the gas to be heated, an interface device, and heating pipes connecting the main unit and the interface device.

[0003] In existing technologies, a heating device is typically installed in a heating pipe, and a temperature measuring device is installed at the outlet end of the heating pipe to measure the gas temperature. The temperature of the gas output from the end of the heating pipe is controlled based on the detected outlet temperature. Since the heating pipe has a certain length, placing the temperature measuring device at the outlet end requires connecting a cable of the same or longer length as the heating pipe to transmit the measurement data. However, the cost of the cable increases the overall manufacturing cost of the heating pipe. Therefore, existing heating pipes suffer from high manufacturing costs. Summary of the Invention

[0004] This invention provides a temperature control method, apparatus, ventilation device, and readable storage medium to solve the problem of high manufacturing costs of existing heating pipelines.

[0005] To solve the above-mentioned technical problems, the present invention is implemented as follows:

[0006] In a first aspect, the present invention provides a temperature control method applied to a ventilation device, the ventilation device comprising a temperature measuring device, a device body, and a heating pipeline, the method comprising:

[0007] The gas temperature detected by the temperature measuring device at the inlet end of the heating pipe is used as the inlet temperature of the heating pipe; the temperature measuring device is set at a designated position in the ventilation equipment, and the distance between the designated position and the inlet end of the heating pipe is less than the distance between the outlet end of the heating pipe and the inlet end of the heating pipe.

[0008] The heating power of the heating pipeline is determined based on the inlet air temperature and the target temperature at the output end of the ventilation device.

[0009] The gas in the heating pipeline is heated according to the heating power so that the gas at the output of the ventilation device is supplied with gas at the target temperature.

[0010] Optionally, before determining the heating power of the heating pipeline based on the inlet air temperature and the target temperature at the output of the ventilation device, the method further includes:

[0011] The time required for the gas to pass through the heating pipe is taken as the gas heating time.

[0012] Determining the heating power of the heating pipeline based on the inlet air temperature and the target temperature at the output end of the ventilation device includes:

[0013] Based on the inlet air temperature and the gas heating time, the temperature loss value of the heating pipeline is determined, and the first loss value is obtained;

[0014] Calculate the temperature rise of the gas in the heating pipeline based on the inlet temperature, the target temperature, and the first loss value;

[0015] The heating power of the heating pipeline is determined based on the temperature rise and the gas heating time.

[0016] Optionally, before determining the temperature loss value of the heating pipeline based on the inlet air temperature and the gas heating time, the method further includes:

[0017] Obtain the ambient temperature of the ventilation equipment;

[0018] The step of determining the temperature loss value of the heating pipeline based on the inlet air temperature and the gas heating time to obtain the first loss value includes:

[0019] The temperature loss parameters of the heating pipeline are determined based on the gas heating time.

[0020] The temperature loss value is calculated based on the intake air temperature, the ambient temperature, and the temperature loss parameter to obtain the first loss value.

[0021] Optionally, determining the heating power of the heating pipeline based on the temperature rise and the gas heating time includes:

[0022] The temperature rise parameters of the heating pipeline are determined based on the gas heating duration.

[0023] The heating power of the heating pipeline is calculated based on the temperature rise value and the temperature rise parameter.

[0024] Optionally, determining the temperature loss parameter of the heating pipeline based on the gas heating time includes:

[0025] Obtain the heat loss parameters and insulation parameters of the heating pipeline, as well as the gas insulation parameters of the gas in the heating pipeline;

[0026] The temperature loss parameter of the heating pipeline is calculated based on the gas heating time, the heat loss parameter and the pipeline insulation parameter, and the gas insulation parameter of the gas in the heating pipeline; wherein the temperature loss parameter is positively correlated with the gas heating time and the heat loss parameter, and negatively correlated with the pipeline insulation parameter and the gas insulation parameter.

[0027] Optionally, determining the temperature rise parameter of the heating pipeline based on the gas heating time includes:

[0028] Obtain the parameters of the increase in internal energy and the parameters of external work done by the gas in the heating pipeline;

[0029] The temperature rise parameter of the heating pipeline is calculated based on the gas heating time, the increase in internal energy of the gas in the heating pipeline, and the work done on the outside. The temperature rise parameter is positively correlated with the gas heating time and the increase in internal energy, and negatively correlated with the work done on the outside.

[0030] Optionally, if the ventilation device further includes an interface device, the method further includes:

[0031] The temperature loss parameter of the interface device is determined based on the gas heating duration.

[0032] Based on the intake air temperature, the ambient temperature, and the temperature loss parameters of the interface device, the temperature loss value of the interface device is calculated to obtain the second loss value;

[0033] The step of calculating the temperature rise of the gas in the heating pipeline based on the inlet air temperature, the target temperature, and the first temperature loss value includes:

[0034] The temperature rise of the gas in the heating pipeline is calculated based on the inlet temperature, the target temperature, the first temperature loss value, and the second temperature loss value.

[0035] Secondly, the present invention provides a temperature control device applied to a ventilation device, the ventilation device comprising a temperature measuring device, a device body, and a heating pipeline, the device comprising:

[0036] The first acquisition module is used to acquire the gas temperature at the inlet end of the heating pipe detected by the temperature measuring device, and use it as the inlet temperature of the heating pipe; the temperature measuring device is set at a designated position of the ventilation equipment, and the distance between the designated position and the inlet end of the heating pipe is less than the distance between the outlet end of the heating pipe and the inlet end of the heating pipe.

[0037] The first determining module is used to determine the heating power of the heating pipeline based on the inlet air temperature and the target temperature at the output end of the ventilation device.

[0038] The control module is used to heat the gas in the heating pipeline according to the heating power, so that the output end of the ventilation device provides gas at the target temperature.

[0039] Optionally, the device further includes:

[0040] The second acquisition module is used to acquire the time required for the gas to pass through the heating pipeline as the gas heating time before the first determining module determines the heating power of the heating pipeline based on the inlet temperature and the target temperature at the output end of the ventilation device.

[0041] The first determining module is specifically used to: determine the temperature loss value of the heating pipeline based on the inlet air temperature and the gas heating time, and obtain a first loss value; calculate the temperature rise value of the gas in the heating pipeline based on the inlet air temperature, the target temperature and the first loss value; and determine the heating power of the heating pipeline based on the temperature rise value and the gas heating time.

[0042] Optionally, before determining the temperature loss value of the heating pipeline based on the inlet air temperature and the gas heating time, the device further includes:

[0043] The third acquisition module is used to acquire the ambient temperature of the ventilation equipment before the first determining module determines the temperature loss value of the heating pipeline based on the inlet air temperature and the gas heating time.

[0044] The first determining module is further configured to: determine the temperature loss parameter of the heating pipeline based on the gas heating time; calculate the temperature loss value based on the inlet temperature, the ambient temperature and the temperature loss parameter to obtain a first loss value.

[0045] Optionally, the first determining module is further configured to: determine the temperature rise parameter of the heating pipeline based on the gas heating time; and calculate the heating power of the heating pipeline based on the temperature rise value and the temperature rise parameter.

[0046] Optionally, the first determining module is further configured to: obtain the heat loss parameters and insulation parameters of the heating pipeline, and the gas insulation parameters of the gas in the heating pipeline; calculate the temperature loss parameters of the heating pipeline based on the gas heating time, the heat loss parameters and insulation parameters of the heating pipeline, and the gas insulation parameters of the gas in the heating pipeline; wherein the temperature loss parameters are positively correlated with the gas heating time and the heat loss parameters, and negatively correlated with the insulation parameters of the pipeline and the gas insulation parameters.

[0047] Optionally, the first determining module is further configured to: obtain the internal energy increase parameter and the external work parameter of the gas in the heating pipeline; calculate the temperature rise parameter of the heating pipeline based on the gas heating time and the internal energy increase parameter and the external work parameter of the gas in the heating pipeline; wherein the temperature rise parameter is positively correlated with the gas heating time and the internal energy increase parameter, and the temperature rise parameter is negatively correlated with the external work parameter.

[0048] Optionally, the device further includes:

[0049] The second determining module is used to determine the temperature loss parameter of the interface device based on the gas heating time, when the ventilation equipment further includes an interface device.

[0050] The calculation module is used to calculate the temperature loss value of the interface device based on the intake air temperature, the ambient temperature and the temperature loss parameter of the interface device, and obtain the second loss value;

[0051] The first determining module is further configured to: calculate the temperature rise of the gas in the heating pipeline based on the inlet temperature, the target temperature, the first temperature loss value, and the second loss value.

[0052] Thirdly, the present invention provides a ventilation device, wherein the ventilation device is equipped with a temperature control device as described above, for performing a temperature control method as described above.

[0053] Fourthly, the present invention provides a readable storage medium storing a program or instructions that, when executed by a ventilation device, implement the steps of any of the temperature control methods described above.

[0054] In this embodiment of the invention, the gas temperature at the inlet of the heating pipe, detected by a temperature measuring device, is used as the inlet temperature of the heating pipe. The temperature measuring device is positioned at a designated location on the ventilation device, the distance between the designated location and the inlet of the heating pipe being less than the distance between the outlet of the heating pipe and the inlet of the heating pipe. The heating power of the heating pipe is determined based on the inlet temperature and the target temperature at the output of the ventilation device. The gas in the heating pipe is heated according to the heating power so that the output of the ventilation device provides gas at the target temperature. Thus, by positioning the temperature measuring device at a designated location close to the inlet of the heating pipe and detecting the gas temperature at the inlet, compared to the prior art where the temperature measuring device is positioned at the outlet of the heating pipe, the length of the cable connected to the temperature measuring device can be reduced. Therefore, the manufacturing cost of the temperature measuring device's cable can be reduced, which to some extent lowers the manufacturing cost of the heating pipe. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0056] Figure 1 This is a flowchart illustrating the steps of a temperature control method according to an embodiment of the present invention;

[0057] Figure 2 A schematic diagram showing the installation of a temperature measuring point at the outlet of a heating pipeline in the prior art;

[0058] Figure 3 This is a schematic diagram illustrating an application scenario of the temperature control method described in an embodiment of the present invention;

[0059] Figure 4 This is a schematic diagram of the temperature loss parameter matrix of the heating pipeline described in an embodiment of the present invention;

[0060] Figure 5 This is a schematic diagram of the temperature rise parameter matrix of the heating pipeline described in an embodiment of the present invention;

[0061] Figure 6 This is a schematic diagram of the composition of the temperature control model described in an embodiment of the present invention;

[0062] Figure 7 This is a schematic diagram of the temperature loss parameter matrix of the nasal oxygen cannula according to an embodiment of the present invention;

[0063] Figure 8This is a schematic diagram illustrating another application scenario of the temperature control method described in this embodiment of the invention;

[0064] Figure 9 This is a schematic diagram illustrating the composition of another temperature control model according to an embodiment of the present invention;

[0065] Figure 10 This is a block diagram of a temperature control device according to an embodiment of the present invention. Detailed Implementation

[0066] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] Figure 1 This is a flowchart of a temperature control method provided in an embodiment of the present invention, as shown below. Figure 1 As shown, this temperature control method is applied to ventilation equipment, which includes a temperature measuring device, an equipment body, and heating pipes. The method may include:

[0068] Step 101: Obtain the gas temperature at the inlet end of the heating pipe detected by the temperature measuring device, and use it as the inlet temperature of the heating pipe; the temperature measuring device is set at a designated position of the ventilation equipment, and the distance between the designated position and the inlet end of the heating pipe is less than the distance between the outlet end of the heating pipe and the inlet end of the heating pipe.

[0069] The temperature control method of this invention is applied to a ventilation device, which may include a temperature measuring device, a device body, and a heating pipe. The ventilation device can heat the gas through the heating pipe. The device body of this invention can provide the gas to be heated, and the heating pipe is connected to the device body for heating the gas supplied from the device body. The gas to be heated may be nitrogen, oxygen, or helium; this invention does not limit the type of gas.

[0070] In this embodiment of the invention, the temperature measuring device can be set at a designated location on the ventilation equipment to detect the temperature of the gas supplied by the equipment body. The designated location can be a preset location near the air inlet of the heating pipe; specifically, it can be a preset location on the side of the equipment body or on the side of the heating pipe, and this embodiment of the invention does not limit this. The distance between the designated location and the air inlet of the heating pipe is less than the distance between the air outlet and the air inlet of the heating pipe. Alternatively, the designated location can be a preset location on the heating pipe, for example, at the interface of the heating pipe used to connect to the equipment body. The distance between the interface and the air inlet of the heating pipe is generally on the order of centimeters, while the length of the heating pipe is generally on the order of meters. Therefore, the distance between the interface and the air inlet of the heating pipe is less than the distance between the air outlet and the air inlet of the heating pipe. Or, the designated location can be a preset location on the equipment body near the heating pipe, for example, on a pipe inside the equipment body 2cm away from the interface of the heating pipe, such that the distance between the preset location on the equipment body and the air inlet of the heating pipe is less than the distance between the air outlet and the air inlet of the heating pipe.

[0071] In this embodiment of the invention, the temperature measuring device is disposed at the interface of the heating pipe for connecting to the device body or at a preset position on the device body near the heating pipe. This ensures that the temperature difference between the gas temperature detected by the measuring device and the actual gas temperature at the beginning of the heating pipe is no higher than 1 degree Celsius. For example, in the actual test of this embodiment, the temperature difference can be controlled to the order of a few tenths of a degree. The temperature measuring device can be a thermistor or a gas temperature sensor; this is merely an example, and this embodiment does not impose any limitations.

[0072] In this embodiment of the invention, the control device of the ventilation equipment can acquire and process the measurement data from the temperature measuring device. The measurement data may include the gas temperature detected by the temperature measuring device at a single moment, or a set of gas temperatures detected over a period of time. The gas temperature detected at a single moment can be used as the inlet temperature of the heating pipe at that moment, or the average of a set of gas temperatures over a period of time can be calculated as the average inlet temperature of the heating pipe during that period of operation. This is merely an example, and the embodiments of the invention do not impose limitations on this. The gas temperature is the temperature detected when the gas generated by the equipment body passes through the temperature measuring device. The inlet temperature characterizes the temperature of the gas entering the heating pipe. In this embodiment of the invention, the gas temperature detected by the temperature measuring device is used as the inlet temperature of the heating pipe.

[0073] Step 102: Determine the heating power of the heating pipeline based on the inlet air temperature and the target temperature at the output end of the ventilation device.

[0074] In this embodiment of the invention, the output end of the ventilation device can be the end of the heating pipeline or the output end of the interface device connected to the heating pipeline; this embodiment of the invention does not impose any limitations on this. The target temperature can be determined by responding to the user's temperature setting operation for the ventilation settings, using the user-set temperature as the target temperature at the output end of the ventilation device. The heating pipeline in this embodiment of the invention includes a heating device, which can be a heating wire. The heating wire can be embedded in the pipeline wall or disposed inside the pipeline; this embodiment of the invention does not impose any limitations on this.

[0075] In this embodiment of the invention, the required temperature rise of the gas in the heating pipeline can be obtained based on the difference between the inlet air temperature and the target temperature at the output of the ventilation device, for example, by calculating the difference between the inlet air temperature and the target temperature. Furthermore, the required heating power of the heating device in the heating pipeline can be determined based on the required temperature rise of the gas and the characteristics of the gas itself. Here, the heating power characterizes the operating power of the heating device in the heating pipeline during operation.

[0076] Step 103: Heat the gas in the heating pipeline according to the heating power so that the output end of the ventilation device provides gas at the target temperature.

[0077] In this embodiment of the invention, the control device of the ventilation equipment can control the heating device in the heating pipeline to generate corresponding heat energy to supply the gas in the heating pipeline according to the heating power. After absorbing the heat energy, the temperature of the gas in the heating pipeline rises, which can make the temperature of the gas at the output end of the ventilation equipment reach the target temperature. The heating pipeline can be heated electrically, for example, by setting a heating wire in the heating pipeline. Of course, light wave heating or magnetic field heating can also be used to heat the gas in the pipeline. This is only an example, and this embodiment of the invention does not limit the scope of the invention.

[0078] In existing technologies, such as Figure 2 As shown, existing heating pipe systems heat the gas in the pipe by setting a temperature measuring point at the pipe outlet, such as using a thermistor or temperature sensor to detect the gas temperature, and further controlling the heating power using a proportional-integral-derivative (PID) control model to achieve temperature control of the gas output from the heating pipe. The presence of a certain length of cable connected to the temperature measuring device incurs manufacturing costs, increasing the overall manufacturing cost of existing heating pipe systems. In contrast, this invention uses a temperature measuring device to detect the gas temperature at the inlet of the heating pipe and controls the temperature of the gas in the heating pipe through the ventilation equipment, thereby enabling the ventilation equipment to provide gas at the target temperature at its output.

[0079] In summary, the temperature control method provided by this invention involves acquiring the gas temperature at the inlet of the heating pipe detected by a temperature measuring device, which is used as the inlet temperature of the heating pipe. The temperature measuring device is positioned at a designated location on the ventilation device, the distance between the designated location and the inlet of the heating pipe being less than the distance between the outlet of the heating pipe and the inlet of the heating pipe. The heating power of the heating pipe is determined based on the inlet temperature and the target temperature at the output of the ventilation device. The gas in the heating pipe is heated according to the heating power so that the output of the ventilation device provides gas at the target temperature. By positioning the temperature measuring device near the inlet of the heating pipe and detecting the gas temperature at the inlet, compared to the prior art where the temperature measuring device is positioned at the outlet of the heating pipe, the length of the cable connected to the temperature measuring device can be reduced. Therefore, the manufacturing cost of the cable for the temperature measuring device can be reduced, thereby reducing the manufacturing cost of the heating pipe to some extent.

[0080] It should be noted that the temperature control method of this invention can be applied to gas heating equipment in general industrial fields, such as air compressors or various types of equipment with their own air sources. Optionally, the method can also be applied to gas heating equipment in the ductwork HVAC industry, in scenarios involving ductwork, supplementary heating for air conditioning units, and warehouse constant temperature systems.

[0081] Optionally, the temperature control method of this invention can be applied to ventilation equipment such as ventilators in the field of medical devices. For example, Figure 3 This is a schematic diagram illustrating an application scenario of the temperature control method according to an embodiment of the present invention, such as... Figure 3 As shown, the ventilation equipment is a ventilator, which includes the main body, heating tubing, and a mask. The mask is the interface device; due to its structural characteristics, the ventilator output is the end of the heating tubing. A temperature measuring device is installed on the main body, and the heating tubing is connected to the main body via a tubing connector. The gas temperature detected by the temperature measuring device is used as the inlet temperature of the heating tubing. Based on the inlet temperature T and the target temperature at the ventilator output, i.e., the end of the heating tubing, the heating power of the heating tubing is determined. The gas in the heating tubing is heated according to the heating power to provide gas at the target temperature at the end of the heating tubing. Ventilation equipment such as ventilators typically have a target temperature set in the range of 18–30 degrees Celsius, while ventilation equipment such as nasal high-flow humidified oxygen therapy devices typically have a target temperature set in the range of 29–37 degrees Celsius. It should be noted that in practical applications, the heating tubing of ventilators or nasal high-flow humidified oxygen therapy devices needs to be replaced frequently. Therefore, reducing the manufacturing cost of heating tubing can lower the operating cost of ventilators or nasal high-flow humidified oxygen therapy devices, thereby enhancing the product's market competitiveness.

[0082] Optionally, before determining the heating power of the heating pipeline based on the inlet air temperature and the target temperature at the output of the ventilation device, the method further includes:

[0083] Step 104: Obtain the time required for the gas to pass through the heating pipe, which is taken as the gas heating time.

[0084] In this embodiment of the invention, the time required for gas to pass through the heating pipe can be determined based on the gas flow rate output by the ventilation device, the length of the heating pipe, and its cross-sectional area. Specifically, the ventilation device in this embodiment can output gas at a fixed flow rate during operation, for example, 50 liters per minute. The gas velocity in the heating pipe can be calculated based on the gas flow rate and the cross-sectional area of ​​the heating pipe, specifically using the volumetric flow rate formula Q = VS, where Q represents the gas volumetric flow rate, V represents the average gas velocity in meters per second, and S represents the cross-sectional area of ​​the heating pipe in square meters. Furthermore, based on the gas velocity and the length of the heating pipe, the time required for gas to pass through the heating pipe can be calculated, and this calculated time can be used as the gas heating time.

[0085] Step 1021: Determine the temperature loss value of the heating pipeline based on the inlet air temperature and the gas heating time to obtain the first loss value.

[0086] In this embodiment of the invention, during the process of passing through the heating pipe, the gas is heated while simultaneously performing work. Due to the respective characteristics of the gas and the heating pipe, such as the material and thickness of the heating pipe and the specific heat capacity of the gas, some heat will be lost from the gas. This heat loss is manifested in a decrease in the gas temperature. The heat loss of the gas is shown in the following formula:

[0087]

[0088] ΔT=(T-Ta0

[0089] Among them, Q Δ R1 represents the heat loss of the gas, measured in Joules (J); ΔT is the temperature difference between the inlet gas temperature T and the ambient temperature Ta, measured in Kelvin (K); Δt is the time it takes for the gas to travel from the beginning to the end of the heating pipe, measured in seconds (s); and R1 is the thermal resistance of the heating pipe, measured in Kelvin per watt (K / W). The thermal resistance of the heating pipe can be calculated using the following formula:

[0090]

[0091] Where L is the thickness of the heating pipe in meters (m), λ is the thermal conductivity of the heating pipe in watts per meter (W / mK), and S is the surface area in square meters. Based on the formulas for heat and specific heat capacity, the following formula can be obtained:

[0092] Q Δ =c×m(T) y "-T x ")

[0093] Where c is the specific heat capacity of the gas, m is the mass of the gas, and T is the mass of the gas. y "T" refers to the gas temperature at the beginning of the heating pipe, i.e., the inlet gas temperature. x "This refers to the gas temperature at the end of the pipeline."

[0094] In this embodiment of the invention, based on the inlet temperature of the gas entering the heating pipeline, the gas heating time, and relevant heat loss parameters of the gas and the pipeline, the heat loss of a certain volume of gas passing through the heating pipeline can be calculated. Further, based on the calculated heat loss value, the temperature loss value of the heating pipeline is determined as the first loss value. The temperature loss value characterizes the decrease in gas temperature corresponding to the heat loss.

[0095] Step 1022: Calculate the temperature rise of the gas in the heating pipeline based on the inlet temperature, the target temperature, and the first loss value.

[0096] In this embodiment of the invention, based on the inlet temperature of the gas entering the heating pipeline, the target temperature set by the user for the ventilation, and the first loss value, which is the temperature loss value of a certain volume of gas after passing through the heating pipeline, the required temperature rise value of a certain volume of gas after passing through the heating pipeline is calculated according to the following formula: Temperature rise value = Inlet temperature – Target temperature + First loss value.

[0097] Step 1023: Determine the heating power of the heating pipeline based on the temperature rise and the gas heating time.

[0098] In this embodiment of the invention, according to the first law of thermodynamics: heat transferred from the outside to the system is used partly to increase the internal energy of the system and partly to do work on the outside. When a thermodynamic system undergoes a state change, such as when the heating pipe in this embodiment heats the gas, the pressure of the system remains constant. A process in which the system's pressure remains constant is called an isobaric process. The characteristic of energy conversion in an isobaric process is that the heat absorbed by the system is equal to the sum of the increase in the system's internal energy and the work done by the system on the outside; that is: heat absorbed by the system from the outside = increase in internal energy + work done by the system on the outside. In this embodiment of the invention, the system can be considered as the gas inside the heating pipe, and the outside can be considered as the heating pipe. The increase in the internal energy of the gas inside the pipe can be considered as the rise in gas temperature caused by heating. Specifically, as shown in the following formula:

[0099]

[0100]

[0101]

[0102]

[0103] Among them, Q p Let ΔE be the heat absorbed by the system from the surroundings, W be the increase in the internal energy of the gas, M be the mass of the gas, μ be the molar mass of the gas, and C be the heat absorbed by the system from the surroundings. v This refers to the molar heat capacity of a gas (molar gas constant R = 8.31 J / mol·K), measured in joules per mole Kelvin (T). x ′ represents the gas temperature at the end of the heating pipe, T y ′ represents the gas temperature at the beginning of the heating pipe, (T) x ′- y ′) represents the temperature rise of the gas after passing through the heating pipe, and i represents the gas's degrees of freedom. For example, the gas to be heated, such as air, is a diatomic gas mainly composed of oxygen and nitrogen, so i equals 5. Alternatively, the gas to be heated can also be helium. Hydrogen (H2), oxygen (O2), and nitrogen (N2) are all diatomic molecules. In an ideal gas, a diatomic molecule has five degrees of freedom: three translational degrees of freedom and two rotational degrees of freedom, for a total of five degrees of freedom, therefore i equals 5.

[0104] In this embodiment of the invention, the heat generated by the heating device of the heating pipeline within a certain time period is shown in the following formula:

[0105] Q p =P×Δ t

[0106] Where P is the heating power of the heating device in the heating pipeline when it is working, Δ t The heating time is the gas heating duration. Based on the temperature rise required after the gas passes through the heating pipe and the gas heating duration, the heat generated by the heating device in the heating pipe during the corresponding time period can be calculated. Furthermore, the heating power P of the heating device in the heating pipe during operation can be calculated.

[0107] In this embodiment of the invention, the time required for the gas to pass through the heating pipeline is obtained as the gas heating time. Based on the inlet gas temperature and the gas heating time, a temperature loss value of the heating pipeline is determined, resulting in a first loss value. Based on the inlet gas temperature, the target temperature, and the first loss value, the temperature rise of the gas in the heating pipeline is calculated. Based on the temperature rise value and the gas heating time, the heating power of the heating pipeline is determined. This fully considers the temperature loss of the gas in the heating pipeline, and by calculating the temperature loss value, the required temperature rise value of the gas calculated based on the temperature loss value can be more accurate. Furthermore, the heating power determined based on the temperature rise value and the gas heating time is also more accurate, thereby reducing the error in the actual obtained temperature rise value and achieving precise temperature control of the gas.

[0108] Optionally, before determining the temperature loss value of the heating pipeline based on the inlet air temperature and the gas heating time, the method further includes:

[0109] Step 105: Obtain the ambient temperature of the ventilation equipment.

[0110] In this embodiment of the invention, the ambient temperature of the ventilation equipment can be obtained by installing an environmental temperature measuring device, such as a room temperature meter, within the ventilation equipment. The ambient temperature characterizes the current air temperature of the environment in which the equipment operates. For example, ventilation equipment typically has a defined operating ambient temperature range; for instance, the operating ambient temperature of a ventilator is within the range of 5–35 degrees Celsius, and the operating ambient temperature of a nasal high-flow humidified oxygen therapy device is within the range of 18–28 degrees Celsius. Of course, other methods can also be used to obtain the ambient temperature of the ventilation equipment; this is merely an example, and the embodiments of the invention do not impose limitations on this.

[0111] Optionally, step 1021 may include the following steps:

[0112] Step 10211: Determine the temperature loss parameters of the heating pipeline based on the gas heating time.

[0113] In this embodiment of the invention, a temperature drop model can be established to characterize the relationship between temperature loss and gas characteristics, heating pipeline characteristics, inlet temperature, ambient temperature, and gas heating time. The temperature loss parameter can be used as model coefficients of the temperature drop model, and can be determined based on the gas characteristics, heating pipeline characteristics, and gas heating time, and is positively correlated with the gas heating time.

[0114] Step 10212: Calculate the temperature loss value based on the intake air temperature, the ambient temperature, and the temperature loss parameter to obtain the first loss value.

[0115] In this embodiment of the invention, based on the temperature drop model, the temperature loss value corresponding to the heat loss of the gas passing through the heating pipeline can be calculated according to the following formula: First loss value = Temperature loss parameter × (Inlet temperature - Ambient temperature) based on the inlet temperature of the gas entering the heating pipeline, the ambient temperature of the ventilation equipment, and the temperature loss parameter of the temperature drop model. In this embodiment of the invention, the process of the gas being heated by the heating device through the heating pipeline is also a process of the heating pipeline using its own material and thickness to keep the gas in the pipeline warm. The greater the thermal resistance of the pipeline, the smaller the temperature drop of the gas, and the closer the gas temperature at the end of the pipeline is to the gas temperature at the beginning of the pipeline.

[0116] In this embodiment of the invention, the ambient temperature of the ventilation equipment is obtained; the temperature loss parameters of the heating pipeline are determined based on the gas heating time; and the temperature loss value is calculated based on the inlet air temperature, ambient temperature, and temperature loss parameters to obtain a first loss value. Thus, determining the temperature loss parameters of the heating pipeline based on the gas heating time simplifies the calculation steps for the temperature loss value, allowing for convenient calculation of the temperature loss value and obtaining the first loss value based on the inlet air temperature, ambient temperature, and temperature loss parameters.

[0117] Optionally, step 1023 may include the following steps:

[0118] Step 10231: Determine the temperature rise parameters of the heating pipeline based on the gas heating time.

[0119] In this embodiment of the invention, a temperature rise model can be established to characterize the relationship between the temperature rise and the properties of the gas, the gas heating time, and the heating power of the heating pipe. The heating process of the gas by the heating device in the heating pipe is a heat conduction process. Heat conduction refers to the energy transfer phenomenon that occurs when there is a temperature difference between different objects or within the same object, through the microscopic vibrations, displacements, and collisions of molecules, atoms, and electrons within the object. The effectiveness of heat conduction is related to the properties of the gas itself. When the gas is heated, it receives heat, thereby increasing its internal energy, which manifests as a temperature rise. The temperature rise parameter can be used as the model coefficient of the temperature rise model, which can be determined based on the gas properties and the gas heating time, and is positively correlated with the gas heating time.

[0120] Step 10232: Calculate the heating power of the heating pipeline based on the temperature rise value and the temperature rise parameter.

[0121] In this embodiment of the invention, based on the heating model, the required temperature rise after the gas passes through the heating pipe can be calculated according to the following formula: heating power = temperature rise value / temperature rise parameter, to determine the heating power of the heating device corresponding to the heat provided by the heating device of the heating pipe to satisfy the temperature rise value.

[0122] In this embodiment of the invention, the temperature rise parameter of the heating pipeline is determined based on the gas heating time; the heating power of the heating pipeline is calculated based on the temperature rise value and the temperature rise parameter. Thus, determining the temperature rise parameter of the heating pipeline based on the gas heating time simplifies the calculation steps for the heating power, allowing for convenient calculation of the heating power of the heating pipeline based on the temperature rise value and the temperature rise parameter.

[0123] Optionally, step 10211 may include the following steps:

[0124] Step 10211a: Obtain the heat loss parameters and insulation parameters of the heating pipeline, as well as the gas insulation parameters of the gas in the heating pipeline.

[0125] In this embodiment of the invention, the heat loss parameters of the heating pipe are used to characterize the characteristics of the heating pipe related to heat loss, such as the thermal conductivity and surface area of ​​the heating pipe. The pipe insulation parameters are used to characterize the characteristics of the heating pipe related to its insulation effect, such as the pipe thickness. The gas insulation parameters of the gas in the heating pipe are used to characterize the gas characteristics related to its insulation effect, such as the specific heat capacity and mass of the gas. These are merely illustrative examples and are not intended to limit the scope of the invention.

[0126] Step 10211b: Calculate the temperature loss parameter of the heating pipeline based on the gas heating time, the heat loss parameter and insulation parameter of the heating pipeline, and the gas insulation parameter of the gas in the heating pipeline; wherein the temperature loss parameter is positively correlated with the gas heating time and the heat loss parameter, and negatively correlated with the pipeline insulation parameter and the gas insulation parameter.

[0127] In this embodiment of the invention, the formula for the temperature drop model is as follows:

[0128]

[0129] Among them, T y "T" refers to the gas temperature at the beginning of the heating pipe, i.e., the inlet gas temperature. x "T represents the gas temperature at the end of the heating pipe." y "-T x"" represents the temperature loss of the gas, λ is the thermal conductivity of the heating pipe, S is the surface area, and Δ t Let T be the gas heating time, Ta be the inlet gas temperature, c be the gas specific heat capacity, m be the gas mass, and L be the thickness of the heating pipe. Then, based on the gas heating time, the heat loss parameters and insulation parameters of the heating pipe, and the gas insulation parameters within the heating pipe, the following formula can be used:

[0130] Calculate the temperature loss parameter T of the heating pipe. 损 Among them, the temperature loss parameter T 损 The thermal conductivity λ of the heating pipe, the surface area S of the pipe, and the gas heating time are positively correlated with Δ. t It is negatively correlated with the specific heat capacity c of the gas, the mass m of the gas, and the thickness L of the pipeline.

[0131] For example, the operating temperature range of the ventilator is 5–35°C, and the gas flow rate range is 20–200 liters per minute. Temperature loss parameters at 5, 10, 15, 20, 25, 30, and 35 degrees Celsius can be obtained experimentally and compiled into a matrix list, such as... Figure 4 As shown, HN corresponds to 5, 10, 15, 20, 25, 30, and 35 degrees Celsius, respectively, and 1-10 correspond to flow rates of 20, 40, 60, 80, 100, 120, 140, 160, 180, and 200 liters per minute, respectively. H1 represents the temperature loss parameter corresponding to an ambient temperature of 5°C and a flow rate of 20 liters per minute; this is merely an example and the embodiments of the present invention do not impose limitations. During actual operation of the ventilator, the temperature loss parameters under the corresponding conditions can be quickly and conveniently obtained by querying the temperature loss parameter matrix.

[0132] In this embodiment of the invention, the heat loss parameters and insulation parameters of the heating pipeline, as well as the gas insulation parameters of the gas in the heating pipeline, are obtained. Based on the gas heating time, the heat loss parameters and insulation parameters of the heating pipeline, and the gas insulation parameters of the gas in the heating pipeline, the temperature loss parameters of the heating pipeline are calculated. The temperature loss parameters are positively correlated with the gas heating time, inlet temperature, ambient temperature, and heat loss parameters, and negatively correlated with the pipeline insulation parameters and gas insulation parameters. Thus, by pre-calculating the temperature loss parameters, relevant calculations can be easily performed based on them.

[0133] Optionally, step 10231 may include the following steps:

[0134] Step 10231a: Obtain the internal energy increase parameter and external work parameter of the gas in the heating pipeline.

[0135] In this embodiment of the invention, the internal energy increase parameter of the gas in the heating pipeline is used to characterize the gas properties related to the increase in internal energy, such as the gas molar mass. The work done by the gas in the heating pipeline is used to characterize the gas properties related to the work done by the gas, such as the gas molar heat capacity and the gas mass M. This is only an example and the embodiments of the invention do not limit this.

[0136] Step 10231b: Calculate the temperature rise parameter of the heating pipeline based on the gas heating time, the internal energy increase parameter of the gas in the heating pipeline, and the external work parameter; wherein the temperature rise parameter is positively correlated with the gas heating time and the internal energy increase parameter, and the temperature rise parameter is negatively correlated with the external work parameter.

[0137] In this embodiment of the invention, the formula for the heating model is as follows:

[0138]

[0139] Among them, T x ′ represents the gas temperature at the end of the pipeline, T y ′ represents the gas temperature at the beginning of the pipeline, (T) x ′- y Δ′) represents the temperature rise of the gas, μ represents the molar mass of the gas, and Δ t C represents the gas heating time. v Let M be the molar heat capacity of the gas, M be the mass of the gas, and P be the heating power. Then, based on the gas heating time and the internal energy of the gas in the heating pipe, the parameters for increasing the power and the external work performed can be calculated using the following formula:

[0140]

[0141] Calculate the temperature rise parameter T of the heating pipeline. 升 Among them, the temperature rise parameter T 升 Gas heating time Δ t The parameter T is positively correlated with the gas molar mass μ and increases with temperature. 升 With gas molar heat capacity C v The gas mass M is negatively correlated.

[0142] For example, the operating temperature range of the ventilator is 5–35°C, and the gas flow rate range is 20–200 liters per minute. Temperature rise parameters of 5, 10, 15, 20, 25, 30, and 35 degrees Celsius can be obtained experimentally and compiled into a matrix list, such as... Figure 5As shown, AG corresponds to 5, 10, 15, 20, 25, 30, and 35 degrees Celsius, respectively, and 1-10 correspond to flow rates of 20, 40, 60, 80, 100, 120, 140, 160, 180, and 200 liters per minute, respectively. A1 represents the temperature rise parameter corresponding to an ambient temperature of 5°C and a flow rate of 20 liters per minute. This is merely an example, and the embodiments of the present invention do not impose limitations on this. It should be noted that during the actual operation of the ventilator, the flow rate is generally calculated as an average flow rate; therefore, the temperature rise parameter is the average temperature rise parameter. The temperature rise parameter under the corresponding conditions can be quickly and conveniently obtained by querying the temperature rise parameter matrix.

[0143] In this embodiment of the invention, the internal energy increase parameter and the external work performed by the gas in the heating pipeline are obtained; based on the gas heating time and the internal energy increase parameter and external work performed by the gas in the heating pipeline, the temperature rise parameter of the heating pipeline is calculated; wherein, the temperature rise parameter is positively correlated with the gas heating time and the internal energy increase parameter, and negatively correlated with the external work parameter. Thus, by pre-calculating the temperature rise parameter, relevant calculations can be conveniently performed based on the temperature rise parameter.

[0144] Optional, such as Figure 6 As shown, a temperature control model can be established for the temperature control method of this invention. When the output end of the ventilation device is the end of the heating tubing, such as when the heating tubing is connected to the mask in a ventilator, the temperature control model can include a heating tubing temperature rise model and a heating tubing temperature drop model. Precise temperature control of the gas in the heating tubing can be achieved based on the temperature control model.

[0145] Optionally, if the ventilation device further includes an interface device, the method further includes:

[0146] Step 201: Determine the temperature loss parameters of the interface device based on the gas heating time.

[0147] In this embodiment of the invention, an interface device temperature drop model can be established. This model characterizes the relationship between the interface device temperature loss value and the characteristics of the gas, the characteristics of the interface device, the inlet temperature, the ambient temperature, and the gas heating time. The interface device temperature loss parameter can be used as the model coefficient of the interface device temperature drop model. It can be determined based on the characteristics of the gas, the characteristics of the interface device, and the gas heating time, and is positively correlated with the gas heating time.

[0148] For example, the operating temperature range of a nasal high-flow humidified oxygen therapy device is 18–28°C, and the gas flow rate range is 20–200 liters per minute. Temperature loss parameters at 18, 20, 22, 24, 26, and 28 degrees Celsius can be obtained experimentally, and these parameters can be compiled into a matrix list, such as… Figure 7 As shown, hm corresponds to 18, 20, 22, 24, 26, and 28 degrees Celsius, respectively, and 1-10 correspond to flow rates of 20, 40, 60, 80, 100, 120, 140, 160, 180, and 200 liters per minute, respectively. h1 represents the nasal cannula temperature loss parameter of the high-flow nasal cannula at an ambient temperature of 5°C and a flow rate of 20 liters per minute. This is merely an example, and the embodiments of the present invention do not impose limitations. During the actual operation of the high-flow nasal cannula humidified oxygen therapy device, the nasal cannula temperature loss parameter under the corresponding conditions can be easily obtained by quickly querying the nasal cannula temperature loss parameter matrix.

[0149] Step 202: Calculate the temperature loss value of the interface device based on the intake temperature, the ambient temperature, and the temperature loss parameter of the interface device to obtain the second loss value;

[0150] In this embodiment of the invention, based on the interface device temperature drop model, the temperature loss value corresponding to the heat loss of the gas passing through the interface device can be calculated according to the following formula: Second Loss Value = Interface Device Temperature Loss Parameter × (Device Inlet Temperature - Ambient Temperature) based on the inlet temperature of the gas entering the interface device, the ambient temperature of the ventilation equipment, and the temperature loss parameters of the interface device temperature drop model: Second Loss Value = Interface Device Temperature Loss Parameter × (Device Inlet Temperature - Ambient Temperature). In this embodiment of the invention, the process of the gas passing through the interface device is also a process in which the interface device uses its own material and thickness to insulate the gas in the interface device. The greater the thermal resistance of the interface device, the smaller the temperature drop of the gas, and the closer the gas temperature at the end of the interface device is to the gas temperature at the beginning of the interface device.

[0151] For example, Figure 8 This is a schematic diagram illustrating an application scenario of another temperature control method according to an embodiment of the present invention, such as... Figure 8 As shown, the ventilation device is a nasal high-flow humidified oxygen therapy device, which includes a device body, a heating pipeline, and a nasal oxygen tube. The nasal oxygen tube is the interface device; due to its structural characteristics, the output end of the nasal high-flow humidified oxygen therapy device is the end of the nasal oxygen tube. A temperature measuring device is installed on the device body, and the heating pipeline is connected to the device body via a pipeline connector. The gas temperature detected by the temperature measuring device is used as the inlet temperature of the heating pipeline. Based on the inlet temperature T and the target temperature at the output end of the nasal high-flow humidified oxygen therapy device, i.e., the end of the nasal oxygen tube, the heating power of the heating pipeline is determined. The gas in the heating pipeline is heated according to the heating power to ensure that the end of the nasal oxygen tube provides gas at the target temperature.

[0152] Optionally, step 1022 may include the following steps:

[0153] Step 10221: Calculate the temperature rise of the gas in the heating pipeline based on the inlet temperature, the target temperature, the first temperature loss value, and the second loss value.

[0154] In this embodiment of the invention, the required temperature rise of a certain volume of gas after passing through the heating pipeline is calculated according to the following formula: Temperature rise = Inlet temperature – Target temperature + First loss value + Second loss value.

[0155] Optional, such as Figure 9 As shown, a temperature control model can be established for the temperature control method of this invention. When the output end of the ventilation device is also the end of the interface device, such as when a nasal oxygen tube is connected to a heating pipe in a high-flow nasal humidification oxygen therapy device, the temperature control model can include a heating pipe temperature rise model, a heating pipe temperature drop model, and an interface device temperature drop model. It should be noted that the interface device, such as the nasal oxygen tube, is a passive pipe and is not electrically charged; therefore, only a corresponding temperature drop model exists. The difference between the interface device temperature drop model and the heating pipe temperature drop model is that the material, shape, and thickness of the nasal oxygen tube differ from those of the heating pipe; therefore, the corresponding nasal oxygen tube temperature loss parameters also differ.

[0156] In this embodiment of the invention, the temperature loss parameter of the interface device is determined based on the gas heating time; the temperature loss value of the interface device is calculated based on the inlet temperature, ambient temperature, and the temperature loss parameter of the interface device to obtain a second loss value; the temperature rise of the gas in the heating pipeline is calculated based on the inlet temperature, target temperature, first temperature loss value, and second loss value. This allows the temperature loss of the interface device to be taken into account, making the calculation of the temperature rise of the gas in the heating pipeline more accurate, thereby achieving precise temperature control of the gas in the heating pipeline. Furthermore, it can reduce the error in the target gas temperature at the output end of the ventilation equipment, i.e., the end of the interface device.

[0157] Figure 10 This is a block diagram of a temperature control device 30 according to an embodiment of the present invention. Figure 10 As shown, the temperature control device 30 is applied to a ventilation device, which includes a temperature measuring device, a device body, and a heating pipeline. The device 30 may include:

[0158] The first acquisition module 301 is used to acquire the gas temperature at the inlet end of the heating pipe detected by the temperature measuring device, and use it as the inlet temperature of the heating pipe; the temperature measuring device is set at a designated position of the ventilation equipment, and the distance between the designated position and the inlet end of the heating pipe is less than the distance between the outlet end of the heating pipe and the inlet end of the heating pipe.

[0159] The first determining module 302 is used to determine the heating power of the heating pipeline based on the inlet air temperature and the target temperature at the output end of the ventilation device.

[0160] The control module 303 is used to heat the gas in the heating pipeline according to the heating power so that the output end of the ventilation device provides gas at the target temperature.

[0161] Optionally, the device 30 further includes:

[0162] The second acquisition module is used to acquire the time required for the gas to pass through the heating pipeline as the gas heating time before the first determining module 302 determines the heating power of the heating pipeline based on the inlet temperature and the target temperature at the output end of the ventilation device.

[0163] The first determining module 302 is specifically used to: determine the temperature loss value of the heating pipeline based on the inlet air temperature and the gas heating time, and obtain a first loss value; calculate the temperature rise value of the gas in the heating pipeline based on the inlet air temperature, the target temperature and the first loss value; and determine the heating power of the heating pipeline based on the temperature rise value and the gas heating time.

[0164] Optionally, before determining the temperature loss value of the heating pipeline based on the inlet air temperature and the gas heating time, the device further includes:

[0165] The third acquisition module is used to acquire the ambient temperature of the ventilation equipment before the first determining module 302 determines the temperature loss value of the heating pipeline based on the inlet air temperature and the gas heating time.

[0166] The first determining module 302 is further configured to: determine the temperature loss parameter of the heating pipeline based on the gas heating time; calculate the temperature loss value based on the inlet temperature, the ambient temperature and the temperature loss parameter to obtain a first loss value.

[0167] Optionally, the first determining module 302 is further configured to: determine the temperature rise parameter of the heating pipeline based on the gas heating time; and calculate the heating power of the heating pipeline based on the temperature rise value and the temperature rise parameter.

[0168] Optionally, the first determining module 302 is further configured to: obtain the heat loss parameters and insulation parameters of the heating pipeline, and the gas insulation parameters of the gas in the heating pipeline; calculate the temperature loss parameters of the heating pipeline based on the gas heating time, the heat loss parameters and insulation parameters of the heating pipeline, and the gas insulation parameters of the gas in the heating pipeline; wherein the temperature loss parameters are positively correlated with the gas heating time and the heat loss parameters, and negatively correlated with the insulation parameters of the pipeline and the gas insulation parameters.

[0169] Optionally, the first determining module 302 is further configured to: obtain the internal energy increase parameter and the external work parameter of the gas in the heating pipeline; calculate the temperature rise parameter of the heating pipeline based on the gas heating time and the internal energy increase parameter and the external work parameter of the gas in the heating pipeline; wherein the temperature rise parameter is positively correlated with the gas heating time and the internal energy increase parameter, and the temperature rise parameter is negatively correlated with the external work parameter.

[0170] Optionally, the device 30 further includes:

[0171] The second determining module is used to determine the temperature loss parameter of the interface device based on the gas heating time, when the ventilation equipment further includes an interface device.

[0172] The calculation module is used to calculate the temperature loss value of the interface device based on the intake air temperature, the ambient temperature and the temperature loss parameter of the interface device, and obtain the second loss value;

[0173] The first determining module 302 is further configured to: calculate the temperature rise of the gas in the heating pipeline based on the inlet temperature, the target temperature, the first temperature loss value, and the second loss value.

[0174] The present invention also provides a ventilation device, wherein the ventilation device is equipped with a temperature control device as described in any of the above descriptions, for performing a temperature control method as described in any of the above descriptions.

[0175] This invention provides a readable storage medium storing a program or instructions that, when executed by a ventilation device, implement the steps of any of the temperature control methods described above. For the device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple; relevant details can be found in the descriptions of the method embodiments.

[0176] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0177] Similarly, it should be understood that, in order to simplify the invention and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, wherein each claim itself is a separate embodiment of the invention.

[0178] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0179] The various component embodiments of the present invention can be implemented in hardware, or as software modules running on one or more processors, or a combination thereof. Those skilled in the art will understand that microprocessors or digital signal processors can be used in practice to implement some or all of the functions of some or all of the components in the sorting device according to the present invention. The present invention can also be implemented as a device or apparatus program for performing part or all of the methods described herein. Such a program implementing the present invention can be stored on a computer-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0180] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0181] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0182] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0183] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0184] It should be noted that the various data-related processes in the embodiments of this application are carried out in compliance with the relevant data protection laws and policies of the country where the location is located, and with the authorization granted by the owner of the corresponding device.

Claims

1. A temperature control method characterized by, The method is applied to a ventilation device, the ventilation device comprising a temperature measuring device, a device body and a heating pipeline, and the method comprises: obtaining the temperature of the gas at the gas inlet end of the heating pipeline detected by the temperature measuring device as the inlet temperature of the heating pipeline; the temperature measuring device is arranged at a specified position of the ventilation device, and the distance between the specified position and the gas inlet end of the heating pipeline is less than the distance between the gas outlet end of the heating pipeline and the gas inlet end of the heating pipeline; obtaining the time length required for the gas to pass through the heating pipeline as the gas heating time length; determining the heating power of the heating pipeline according to the inlet temperature and the target temperature of the outlet end of the ventilation device; and heating the gas in the heating pipeline according to the heating power, so that the outlet end of the ventilation device provides the gas at the target temperature; the method further comprises: obtaining the ambient temperature of the ventilation device; determining the temperature loss value of the heating pipeline according to the inlet temperature and the gas heating time length, to obtain a first loss value; calculating the temperature rise value of the gas in the heating pipeline according to the inlet temperature, the target temperature and the first loss value; determining the heating power of the heating pipeline according to the temperature rise value and the gas heating time length; the method further comprises: determining the temperature loss parameter of the heating pipeline according to the gas heating time length; calculating the temperature loss value according to the inlet temperature, the ambient temperature and the temperature loss parameter, to obtain a first loss value; the method further comprises: determining the temperature rise parameter of the heating pipeline according to the gas heating time length; calculating the heating power of the heating pipeline according to the temperature rise value and the temperature rise parameter.

2. The method of claim 1, wherein, the method further comprises: obtaining the heat loss parameter and pipeline insulation parameter of the heating pipeline, and the gas insulation parameter of the gas in the heating pipeline; calculating the temperature loss parameter of the heating pipeline according to the gas heating time length, the heat loss parameter and pipeline insulation parameter of the heating pipeline, and the gas insulation parameter of the gas in the heating pipeline; wherein the temperature loss parameter is positively correlated with the gas heating time length and the heat loss parameter, and the temperature loss parameter is negatively correlated with the pipeline insulation parameter and the gas insulation parameter.

3. The method of claim 1, wherein, the method further comprises: obtaining the internal energy increase parameter and external work parameter of the gas in the heating pipeline; According to the gas heating time length and the internal energy increase parameter and the external work parameter of the gas in the heating pipeline, a temperature rise parameter of the heating pipeline is calculated; wherein the temperature rise parameter is positively correlated with the gas heating time length and the internal energy increase parameter, and the temperature rise parameter is negatively correlated with the external work parameter.

4. The method of claim 1, wherein, In the case that the ventilation device further comprises an interface device, the method further comprises: According to the gas heating time length, a temperature loss parameter of the interface device is determined; According to the gas inlet temperature, the ambient temperature and the temperature loss parameter of the interface device, a temperature loss value of the interface device is calculated, obtaining a second loss value; The calculation of the temperature rise value of the gas in the heating pipeline according to the gas inlet temperature, the target temperature and the first loss value comprises: The calculation of the temperature rise value of the gas in the heating pipeline according to the gas inlet temperature, the target temperature, the first loss value and the second loss value.

5. A temperature control device, characterized by, Applied to a ventilation device, the ventilation device comprises a temperature measuring device, a device body and a heating pipeline, and the device comprises: A first acquisition module is configured to acquire the gas temperature at the gas inlet end of the heating pipeline detected by the temperature measuring device as the gas inlet temperature of the heating pipeline; the temperature measuring device is arranged at a specified position of the ventilation device, and the distance between the specified position and the gas inlet end of the heating pipeline is less than the distance between the gas outlet end of the heating pipeline and the gas inlet end of the heating pipeline; A second acquisition module is configured to acquire the time length required for the gas to pass through the heating pipeline as the gas heating time length; A first determination module is configured to determine the heating power of the heating pipeline according to the gas inlet temperature and the target temperature of the output end of the ventilation device; A third acquisition module is configured to acquire the ambient temperature of the ventilation device before the first determination module determines the temperature loss value of the heating pipeline according to the gas inlet temperature and the gas heating time length; A control module is configured to heat the gas in the heating pipeline according to the heating power, so that the output end of the ventilation device provides the gas at the target temperature. The first determination module is specifically configured to: determine the temperature loss value of the heating pipeline according to the gas inlet temperature and the gas heating time length, obtaining a first loss value; calculate the temperature rise value of the gas in the heating pipeline according to the gas inlet temperature, the target temperature and the first loss value; determine the heating power of the heating pipeline according to the temperature rise value and the gas heating time length, and is specifically further configured to determine the temperature loss parameter of the heating pipeline according to the gas heating time length; calculate the temperature loss value according to the gas inlet temperature, the ambient temperature and the temperature loss parameter, obtaining a first loss value; and is specifically further configured to determine the temperature rise parameter of the heating pipeline according to the gas heating time length; calculate the heating power of the heating pipeline according to the temperature rise value and the temperature rise parameter.

6. A ventilation device characterized by The ventilation device is provided with the temperature control device as claimed in claim 5, and is used to execute the temperature control method as claimed in any one of claims 1-4.

7. A readable storage medium characterized by, The program or instructions are stored on a readable storage medium and are executed by the ventilation device to implement the steps of the temperature control method according to any one of claims 1-4.

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