Dry salt aerosol generation method and device based on salt solution

Abstract

The invention relates to the field of medical apparatus and instruments, and discloses a dry salt aerosol generation method and device based on a salt solution, and the method comprises the following steps: firstly dissolving salt in water to form a salt solution with a certain concentration; the salt solution is atomized into salt mist with tiny liquid drops in a physical mode; the generated salt mist is dried, moisture in the salt mist is removed, and dry salt particles are formed; and blowing out the dry salt particles to form dry salt aerosol. The dry salt aerosol with smaller particle size and more uniform particle size can be obtained, the concentration of the dry salt aerosol is easier to control, the treatment effect of the dry salt aerosol can be greatly improved by controlling the dryness, the noise is low, and a comfortable treatment environment is provided for a patient.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a method and device for generating dry salt aerosol based on salt solution. Background Art

[0002] Rock salt aerosol therapy (salt aerosol therapy device) is a salt therapy device that generates salt aerosol for respiratory system treatment. By increasing the ion concentration in the respiratory tract, changing the mucus osmotic pressure, improving the rheology of respiratory mucus, activating the innate immunity of lung tissue, and enhancing the activity of pulmonary macrophages, it can achieve the purposes of antibacterial and anti-inflammatory, relieving edema, enhancing clearance, resolving phlegm and discharging phlegm, enhancing immunity and resistance, so as to prevent, improve and treat respiratory diseases.

[0003] Studies have shown that the salt aerosol particle size must be less than 5 μm (micrometers) to reach the bronchioles and alveoli in the respiratory tract, and can directly act on the lesion site to achieve better treatment effects. Currently, the rock salt aerosol therapy devices on the market generally grind rock salt particles into highly dispersed dry salt particles, and then blow out the small rock salt particles through a fan to form rock salt aerosol, which is deposited in the lungs after being inhaled by the patient to achieve the treatment effect. However, the particle size formed by crushing and grinding salt mines is relatively large and the particle size is uneven, and the proportion of the formed salt aerosol particle size less than 5 μm is relatively low. It is difficult to ensure that the particle size of the dry salt particles meets the requirements, and the expected treatment effect cannot be achieved. At the same time, the rock salt particles cannot be fully transformed into rock salt aerosol, resulting in a relatively low concentration of the obtained rock salt aerosol. And during the process of crushing and grinding salt mines, relatively large noise will be generated, affecting the comfort of patients during treatment. Summary of the Invention

[0004] To solve the problems of uneven particle size, large particle size and noise generation in the generation of salt aerosol by directly using salt mines, the present invention provides a method and device for generating dry salt aerosol based on salt solution. By dissolving solid salt in water to form a salt solution, and then atomizing and drying it to form salt aerosol with uniform particle size. The dry salt aerosol formed by this method has a small particle size, can directly reach the bronchioles and alveoli in the respiratory tract, and has relatively low noise during the generation process.

[0005] To achieve the above object, the present invention proposes a technical solution, a method for generating dry salt aerosol based on salt solution, which includes the following steps: S1 Dissolve salt in water to form a salt solution with a certain concentration; S2 Atomize the salt solution into a salt mist of tiny droplets by physical means; S3 Dry the generated salt mist to remove the water in the salt mist and form dry salt particles; S4 Blow out the dry salt particles to form dry salt aerosol.

[0006] Specifically, in the step S2, the method of atomizing the salt solution into salt mist by physical means includes ultrasonic atomization, compression atomization, and vibrating mesh atomization.

[0007] Furthermore, in the step S2, a filtering and screening step is further included, specifically: S201 Set the requirements for the salt mist particle size; S202 Set the atomization conditions; S203 Atomize the salt solution into tiny droplets, and screen and control the formed tiny droplets; S204-1 Screen out the tiny droplets that meet the particle size requirements to form the required salt mist; S204-2 The tiny droplets that do not meet the particle size requirements return to the salt solution for re-atomization.

[0008] Specifically, the salt mist particle size requirement D 液滴 ≤ 30 μm; the atomization conditions include: the gas flow rate generated by the gas source module, the working frequency of the atomization module, the pore size, and the salt solution concentration.

[0009] Preferably, the salt mist particle size requirement D 液滴 ≤ 15 μm.

[0010] Preferably, the salt mist particle size requirement D 液滴 ≤ 10 μm.

[0011] Specifically, in the step S3, the drying method includes one or any two combinations of hot air drying, infrared drying, and microwave drying; The heating component of the hot air drying includes an electric heating sheet and an electric heating wire.

[0012] Furthermore, the specific steps of the drying are: The air flow generated by the gas source module sends the salt mist generated by the atomization module into the drying module for drying, and blows out the formed salt particles to form a dry salt aerosol; Or, the air flow generated by the gas source module is heated by the heating component of the drying module to form a hot air flow, and the hot air flow dries the salt mist generated by the atomization module, and blows out the formed salt particles to form a dry salt aerosol.

[0013] Specifically, the temperature for drying the salt mist is 50~150 °C, and the particle size D of the salt particles 盐 ≤ 5 μm.

[0014] Furthermore, the step S4 is specifically: S401 Detect the dryness of the salt particles; S402 Compare with the preset dryness of the salt particles to judge whether the detected dryness of the dry salt particles meets the requirements; If the dryness meets the requirements, keep the operating parameters unchanged, and blow out the dry salt particles through the air flow generated by the air source module to form dry salt aerosol; If the dryness does not meet the requirements, adjust the operating parameters, including increasing the drying temperature, and / or decreasing the air flow rate, and / or decreasing the atomization rate, until the dryness meets the requirements, and blow out the salt particles through the air flow generated by the air source module to form dry salt aerosol.

[0015] Specifically, the dryness of the salt particles is detected offline or online; the offline detection method is to detect the moisture content of the dry salt particles by the drying method; the online detection method is to detect the moisture content of the dry salt particles by the infrared ray method or the microwave method.

[0016] Preferably, the preset dryness of the dry salt particles: moisture content ≤ 1%.

[0017] Preferably, the preset dryness of the dry salt particles: moisture content ≤ 0.3%.

[0018] Furthermore, in step S403-2, when it is detected that the heating temperature reaches the set upper limit, the heating temperature is not increased, and the air flow rate and / or the atomization rate are decreased.

[0019] Furthermore, in step S3403-2, it also includes increasing the dryness of the salt particles by extending the drying path.

[0020] Furthermore, the generated dry salt aerosol is directly diffused into the air in the treatment room for multiple people to inhale for treatment, or is supplied to a single person for inhalation treatment through a breathing tube.

[0021] There is also disclosed a dry salt aerosol generating device for implementing the above dry salt aerosol generating method, including an atomization module, an air source module, a drying module, and a dryness measurement module; The atomization module is used to atomize the salt solution into tiny droplets and filter and screen to generate salt mist; The drying module is connected to the atomization module and dries the salt mist generated by the atomization module into salt particles; The air source module is communicated with the drying chamber, provides air flow, accelerates the drying speed of the salt particles and blows out the dried salt particles from the air outlet to form dry salt aerosol; The dryness measurement module is arranged between the drying chamber and the air outlet, or is arranged at the outlet of the ventilation pipeline, and is used to detect the dryness of the salt particles.

[0022] Furthermore, the drying module includes an energy generating component and a drying chamber, and the energy generating component includes a heating component, an infrared ray generating component, and a microwave generating component; The connection methods of the dry salt aerosol generating device specifically include: The gas source module is connected to the atomization outlet of the atomization module after passing through the heating component, and then successively passes through the drying chamber and the dryness measurement module and is connected to the outlet of the ventilation pipeline; Or, the gas source module is connected to the atomization outlet of the atomization module, and then successively passes through the drying chamber and the dryness measurement module and is connected to the outlet of the ventilation pipeline, and the energy generating component is arranged in the drying chamber; Or, the gas source module successively passes through the atomization module, the drying chamber and the dryness measurement module and is connected to the outlet of the ventilation pipeline, and the energy generating component is arranged in the drying chamber.

[0023] Specifically, the drying chamber is a space for drying salt mist, which can be a section of ventilation pipeline or a designed chamber for drying salt mist.

[0024] In the present invention, a salt particle size calculation model is also established. It is assumed that the tiny droplet salt mist formed by atomization is an ideal sphere, and the salt particles formed after drying the salt mist are equivalent spheres in an ideal state. Moreover, each drop of salt mist forms one salt particle after drying, without considering agglomeration, dispersion, and other shapes. The relationship between the salt particle size and the salt solution concentration and the salt mist particle size under ideal conditions is expressed by the following formula (1): Where: D 盐 is the particle size of the salt particle, C is the salt solution concentration, in g / mL, D 液滴 is the particle size of the tiny droplet of the salt mist, ρ NaCl is the density of sodium chloride.

[0025] Under ideal conditions, the particle size of the dry salt particles formed after drying the salt mist is smaller than the particle size of the salt mist droplets, and the lower the salt solution concentration, the smaller the particle size of the formed salt particles.

[0026] According to the transformation of formula (1), under ideal conditions, the required salt mist particle size can be obtained from the salt particle size and the salt solution concentration, which is expressed as formula (2): Where: D 盐 is the particle size of the salt particle, C is the salt solution concentration, in g / mL, D 液滴 is the particle size of the tiny droplet of the salt mist, ρ NaCl is the density of sodium chloride.

[0027] The required salt mist particle size can be obtained from the salt solution concentration and the finally required salt particle size, and then the dry salt aerosol generating device can be adjusted and set according to the requirement of the salt mist particle size.

[0028] The beneficial effects of the present invention: 1. In the present invention, solid salt is dissolved in water and then atomized into tiny droplets with a particle size of less than 5 μm. These droplets are then dried and recrystallized to form salt microparticles. Since the volume of salt (sodium chloride) is much smaller than the total volume of the solution, salt microparticles with smaller particle sizes can be obtained, improving the treatment effect. 2. When the salt solution is atomized, after filtration and screening, the atomized tiny droplets have a uniform particle size. The salt microparticles formed after drying have a uniform particle size, a concentrated particle size distribution, and more controllable particle size. At the same time, it is easier to control the concentration of the salt sol. Moreover, the fully dried salt microparticles have a uniform structure, making it easier to control the particle size of the salt sol. 3. The dryness of the formed salt microparticles is detected in real time and adjusted intelligently. The salt microparticles formed by sufficient drying have smaller particle sizes and can enter the bronchioles and alveoli of the respiratory tract, improving the treatment effect of the salt sol. 4. In the present invention, there is no need to crush and grind the solid salt ore, avoiding the noise generated by crushing and grinding, and providing a comfortable treatment environment for patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. For those skilled in the art, without creative efforts, other drawings can also be obtained based on the drawings.

[0030] Figure 1 Flow chart of the generation of dry salt aerosol in the present invention; Figure 2 Flow chart of the dryness control of dry salt aerosol in the present invention; Figure 3 Schematic diagram of a device for generating dry salt aerosol according to an embodiment of the present invention; Figure 4 Schematic diagram of a drying module of a device for generating dry salt aerosol according to an embodiment of the present invention; Figure 5 Schematic diagram of another drying module of a device for generating dry salt aerosol according to an embodiment of the present invention; Figure 6 Device for generating dry salt aerosol according to another embodiment of the present invention; Figure 7 Schematic diagram of a drying module of a device for generating dry salt aerosol according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following will be combined with the attached drawings in the embodiments of the present invention Figures 1 to 4, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0032] Referring to Figure 1 and Figure 2 As shown, an embodiment of a method for generating dry salt aerosol based on a salt solution is disclosed, including the following steps: S1 Dissolve the salt in water to form a salt solution with a certain concentration; S2 Atomize the salt solution into a salt mist of tiny droplets by physical means; S3 Dry the generated salt mist to remove the moisture in the salt mist and form dry salt particles; S4 Blow out the dry salt particles to form a dry salt aerosol.

[0033] In step S1, the required concentration of the salt solution is determined according to factors such as the application scenario of the salt aerosol therapy instrument, the working mode, the control requirements for the particle size and concentration of the dry salt aerosol, and the set power of the dry salt aerosol generating device.

[0034] In step S2, the salt solution is atomized into a salt mist by physical means such as ultrasonic atomization, compression atomization, and vibrating mesh atomization.

[0035] In a further embodiment, step S2 further includes a filtering and screening step, specifically: S201 Set the particle size requirement of the salt mist; S202 Set the atomization conditions; S203 Atomize the salt solution into tiny droplets and perform screening control on the formed tiny droplets; S204-1 Screen out the tiny droplets that meet the particle size requirements to form the required salt mist; S204-2 The tiny droplets that do not meet the particle size requirements return to the salt solution for re-atomization.

[0036] In a specific embodiment, the particle size requirement of the salt mist is set as: particle size D 液滴 ≤ 30 μm; the atomization conditions include: the gas flow rate generated by the gas source module, the working frequency of the atomization module, the pore size, and the salt solution concentration.

[0037] Preferably, the particle size requirement D of the salt mist 液滴 ≤ 15 μm.

[0038] Preferably, the particle size requirement D of the salt mist 液滴 ≤ 10 μm.

[0039] It should be noted that the range of the salt mist particle size is related to the concentration of the salt solution. When the concentration of the salt solution decreases, even if the salt mist particle size is greater than 30 μm, the requirements can be met.

[0040] In the present invention, the atomization of the salt solution into tiny droplets can be screened and controlled by the aperture of the micro-mesh, the microwave frequency, the air flow rate generated by the air source module, and the structure of the atomization port, etc.

[0041] It should be known that in step S3, there are various drying methods, and the commonly used drying methods include one or any two combinations of hot air drying, infrared drying, and microwave drying; In a specific embodiment, the heating component for hot air drying can be an electric heating sheet or an electric heating wire, or other devices that can provide heat to raise the air temperature.

[0042] In a specific embodiment, according to the working mechanism of the atomization module and the drying principle of the drying module, the specific steps for drying the generated salt mist are as follows: The air flow generated by the air source module sends the salt mist generated by the atomization module into the drying module for drying, and blows out the salt particles formed after drying to form a dry salt aerosol; Or, the air flow generated by the air source module is heated by the heating component of the drying module to form a hot air flow, and the hot air flow dries the salt mist generated by the atomization module, and blows out the salt particles formed after drying to form a dry salt aerosol.

[0043] In this embodiment, the temperature for drying the salt mist is controlled at 50~150 °C, and the particle size D of the salt particles generated after drying 盐 ≤5 μm.

[0044] In the present invention, a calculation model for the salt particle size is also established. It is assumed that the tiny droplet salt mist formed by atomization is an ideal sphere, and the salt particles formed after drying the salt mist are equivalent spheres in an ideal state. Moreover, each droplet of salt mist forms one salt particle after drying, without considering agglomeration, dispersion, and other shapes. Under ideal conditions, the relationship between the salt particle size and the salt solution concentration and the salt mist particle size is expressed by the following formula (1): Where: D 盐 is the particle size of the salt particles, C is the concentration of the salt solution, in g / mL, D 液滴 is the particle size of the tiny droplets of the salt mist, ρ NaCl is the density of sodium chloride.

[0045] Under ideal conditions, the particle size of the dry salt particles formed after drying the salt mist should be smaller than the particle size of the salt mist droplets, and the lower the salt solution concentration, the smaller the particle size of the formed salt particles.

[0046] In one embodiment, the salt solution concentration C = 1 g / mL, and the salt spray micro-droplet diameter D 液滴 = 30 μm, and the sodium chloride density ρ NaCl = 2.16 g / cm 3 . Substituting these values into formula (1) gives: That is, the salt particle diameter D 盐 = 5 μm.

[0047] In another embodiment, the salt solution concentration C = 10 g / mL, and the salt spray micro-droplet diameter D 液滴 = 10 μm, and the sodium chloride density ρ NaCl = 2.16 g / cm 3 . Substituting these values into formula (1) gives: That is, the salt particle diameter D 盐 = 3.59 μm.

[0048] During the actual salt spray drying process, it is inevitable that due to the airflow driving the droplets to collide with each other, partial agglomeration phenomena will occur, and in the drying process of the same droplet, multiple salt particles will be formed, resulting in the uneven diameter of the finally formed salt particles and forming a certain particle size.

[0049] Specifically, in one embodiment of the present invention, the particle size of the salt particles formed after drying, where D 盐 ≤ 3 μm, accounts for more than 50%, and D 盐 ≤ 5 μm accounts for more than 80%.

[0050] In this embodiment, step S4 is specifically as follows: S401 Detect the dryness of the salt particles; S402 Compare with the preset dryness of the salt particles to determine whether the detected dryness of the salt particles meets the requirements; S403-1 If the dryness meets the requirements, keep the operating parameters unchanged, and blow out the dried salt particles through the airflow generated by the gas source module to form a dry salt aerosol; S403-2 If the dryness does not meet the requirements, adjust the operating parameters, including increasing the drying temperature, and / or reducing the airflow speed, and / or reducing the atomization rate, until the dryness meets the requirements, and blow out the salt particles through the airflow generated by the gas source module to form a dry salt aerosol.

[0051] It should be noted that the dryness of the salt particles can be detected offline or online; Offline detection can be carried out by drying methods such as an oven, or by methods such as infrared method and microwave method to measure the dryness of salt particles; the relationship between parameters such as atomization rate, heating temperature, microwave frequency and energy, air flow rate of the gas source, and salt particle size and the dryness can be obtained through experiments, and a dryness mathematical model can be established. The dryness of salt particles can be controlled by parameters such as atomization rate, heating temperature, microwave frequency and energy, and air flow rate of the air flow. Online detection can be carried out by methods such as infrared ray method and microwave method to detect the dryness of salt particles; online detection can detect the actual dryness of salt particles in real time during continuous operation, and the dry salt aerosol device can adjust the working parameters in real time according to the detected dryness.

[0052] In this embodiment, online detection is carried out.

[0053] In this embodiment, the dryness of salt particles is expressed by measuring the moisture content of salt particles.

[0054] In the embodiment, the preset dryness of salt particles: moisture content ≤ 1%.

[0055] In a further embodiment, the dryness of salt particles is optimized, and the preset requirement for the dryness of salt particles is: moisture content ≤ 0.3%.

[0056] It should be noted that the requirement for the moisture content of dry salt particles is not fixed. The higher the moisture content (that is, the lower the dryness), the weaker the therapeutic effect on respiratory diseases. When the moisture content of salt particles exceeds 1%, it still has the efficacy of treating respiratory system diseases, but only the therapeutic effect is weaker than that of salt particles with a lower moisture content.

[0057] According to the transformation of formula (1), in an ideal state, the required salt mist particle size can be obtained from the salt particle size and the salt solution concentration, expressed as formula (2): Where: D 盐 is the particle size of salt particles, C is the salt solution concentration, unit g / mL, D 液滴 is the particle size of salt mist micro-droplets, ρ NaCl is the density of sodium chloride.

[0058] The required salt mist particle size can be obtained from the salt solution concentration and the finally required salt particle size, and then the dry salt aerosol generating equipment can be adjusted and set according to the requirement of the salt mist particle size.

[0059] It is also possible to obtain the required salt solution concentration under the conditions of determining the salt particle size and the salt mist particle size through the transformation of formula (1) or (2).

[0060] It should be noted that since formulas (1) and (2) are theoretical calculations under ideal conditions, in actual situations, due to factors such as drying conditions and ventilation speed, uncertainties such as agglomeration, insufficient drying, and non-tight crystals after salt particle recrystallization may occur. Therefore, to obtain salt particles with a required particle size, it is necessary to generate salt mist with a particle size smaller than the calculated result or a salt solution with a lower concentration.

[0061] In a further embodiment, in step S403-2, when the moisture content exceeds the preset drying requirement but the drying temperature has reached the set upper limit of the temperature, the drying degree cannot be increased by further increasing the heating temperature. Instead, the drying degree can be increased by reducing the air flow speed and / or the atomization rate to reduce the salt mist concentration and extend the drying time of the salt mist.

[0062] In a further embodiment, in step S403-2, the drying degree of the salt particles can also be increased by extending the drying path and the drying time.

[0063] In a further embodiment, the dry salt aerosol generated by the dry salt aerosol device can be provided for patients to choose in two ways: One way is that the generated dry salt particles are directly dispersed into the air in the treatment room from the air outlet to form a salt sol for multiple people to inhale for treatment; The other way is that the air outlet of the dry salt aerosol generating device is connected to a breathing pipeline, and the patient inhales alone through a breathing mask.

[0064] Refer to Figure 3 As shown, an embodiment of the dry salt aerosol generating device for generating dry salt aerosol includes an atomization module, a gas source module, a drying module, and a drying degree measurement module; The gas source module is communicated with the atomization outlet of the atomization module, and then is communicated with the outlet of the ventilation pipeline after passing through the drying degree measurement module.

[0065] In a further embodiment, the drying module includes an energy generating component and a drying chamber. The energy generating component includes a heating component, an infrared generating component, and a microwave generating component. The heating component can be a heating wire or a heating sheet, and various connection methods can be formed according to different drying principles and methods.

[0066] Refer to Figure 4 As shown in a connection method, the gas source module is communicated with the atomization outlet of the atomization module, and then is successively communicated with the outlet of the ventilation pipeline after passing through the drying chamber and the drying degree measurement module, and the energy generating component is arranged in the drying chamber.

[0067] The specific operation process is as follows: The air source module, atomization module, and energy generation component start working according to the control program. The energy generation component generates drying energy in the drying chamber (depending on the type of energy generation component: the heating component starts heating to raise the temperature, the infrared ray generation component generates infrared rays of a certain wavelength, and the microwave generation component generates microwaves of a certain frequency and energy). The atomization module generates salt mist. The air flow generated by the air source module drives the salt mist through the atomization port of the atomization module into the drying chamber for drying, and carries the salt particles generated after drying out from the outlet of the ventilation pipeline to form dry salt aerosol. The dryness acquisition module is arranged between the drying chamber and the outlet of the ventilation pipeline to detect the dryness of the salt particles in the ventilation pipeline in real time.

[0068] It can be known that the air source module can be a fan, a blower or other devices that generate air flow; the atomization module can use ultrasonic atomization, micro-hole mesh atomization or other devices that do not require additional air flow for atomization; the energy generation component can be a heating component, an infrared ray generation component or a microwave generation component; the dryness acquisition module can also be arranged at the outlet of the ventilation pipeline.

[0069] Refer to Figure 5 In another connection method shown, the air source module is connected to the atomization outlet of the atomization module after passing through the heating component, and then successively passes through the drying chamber and the dryness measurement module and is connected to the outlet of the ventilation pipeline.

[0070] The specific operation process is as follows: The air source module, atomization module, and energy generation component start working according to the control program. The heating component starts heating, the atomization module generates salt mist. The air flow generated by the air source module is heated by the heating component to form hot air. The hot air converges with the salt mist through the atomization port of the atomization module. The hot air dries the salt mist during the process of carrying it out, and finally completely dried salt particles are blown out from the outlet of the ventilation pipeline to form dry salt aerosol. The dryness acquisition module is arranged between the drying chamber and the outlet of the ventilation pipeline to detect the dryness of the salt particles in the ventilation pipeline in real time.

[0071] It can be known that the air source module can be a fan, a blower or other devices that generate air flow; the atomization module can use ultrasonic atomization, micro-hole mesh atomization or other devices that do not require additional air flow for atomization; the energy generation component is a heating component, and the heating component can be a heating wire, a heating sheet or other devices that can raise the temperature of the gas; a section of the ventilation pipeline for drying salt mist with hot air can be regarded as the drying chamber; the dryness acquisition module can also be arranged at the outlet of the ventilation pipeline.

[0072] Refer to Figure 6 As shown, another embodiment of the dry salt aerosol generating device for generating dry salt aerosol includes an atomization module, an air source module, a drying module, and a dryness measurement module; The gas source module first leads to the atomization module, and then after passing through the drying module, it is connected to the outlet of the ventilation pipeline. The dryness measurement module is arranged at the outlet of the ventilation pipeline.

[0073] In a further embodiment, the drying module includes an energy generation component and a drying chamber. The energy generation component includes a heating component, an infrared ray generation component, and a microwave generation component. The heating component can be a heating wire or a heating sheet.

[0074] Referring to Figure 7 A connection method of the dry salt aerosol generating device shown, the gas source module is successively connected to the outlet of the ventilation pipeline through the atomization module, the drying chamber, and the dryness measurement module, and the energy generation component is arranged in the drying chamber.

[0075] The specific operation process is as follows: The gas source module and the energy generation component start to work according to the control program. The energy generation component generates drying energy in the drying chamber (respectively according to different energy generation components: the heating component starts to heat up, the infrared ray generation component generates infrared rays of a certain wavelength, and the microwave generation component generates microwaves of a certain frequency and energy). The airflow generated by the gas source module passes through the atomization module to generate salt mist, and drives the salt mist into the drying chamber for drying, and then blows out the salt particles generated after drying from the outlet of the ventilation pipeline to form dry salt aerosol. The dryness acquisition module is arranged between the drying chamber and the outlet of the ventilation pipeline to detect the dryness of the salt particles in the ventilation pipeline in real time.

[0076] It can be known that the gas source module can be an air compressor or other devices that generate airflow; the atomization module can use a compression type atomization device; the energy generation component can be a heating component, an infrared ray generation component or a microwave generation component; the dryness acquisition module can also be arranged at the outlet of the ventilation pipeline.

[0077] In this embodiment, the gas source module, the atomization module, and the drying chamber are connected through a ventilation pipeline.

[0078] It can be known that the drying chamber is not a limited cavity, as long as it is a space for drying salt mist, it can be regarded as a drying chamber, which can be a section of ventilation pipeline or a separately designed cavity for drying salt mist.

[0079] It should be noted that the salt referred to in the present invention means sodium chloride, not salts in the chemical sense; the salt solution referred to in the present invention is a sodium chloride solution, the solute is sodium chloride, the solvent is water, and it can contain trace elements such as magnesium and potassium. The concentration of the salt solution can be adjusted according to actual needs; the salt sol referred to in the present invention is an aerosol formed by dry sodium chloride particles, and it can contain trace elements such as magnesium and potassium.

[0080] In addition, dry salt aerosol, salt sol, and rock salt aerosol are all aerosols formed by dry salt particles dispersed and suspended in the air, in the same state, and the particle size and granularity can be adjusted according to specific use.

[0081] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many specific transformations in form without departing from the spirit of the invention and the scope protected by the claims. All of these fall within the protection scope of the present invention.

Claims

1. A dry salt aerosol generation method based on a salt solution, characterized in that, It includes the following steps: S1 Dissolve salt in water to form a salt solution with a certain concentration; S2 Atomize the salt solution into a salt mist of tiny droplets by physical means; S3 Dry the generated salt mist to remove the moisture in the salt mist and form dry salt particles; S4 Blow out the dry salt particles to form a dry salt aerosol.

2. The dry salt aerosol generation method based on a salt solution according to claim 1, characterized in that, In the step S2, the ways to atomize the salt solution into a salt mist by physical means include ultrasonic atomization, compression atomization, and vibrating mesh atomization.

3. The dry salt aerosol generation method based on a salt solution according to claim 1, wherein In the step S2, it also includes a screening control step, specifically: S201 Set the requirements for the particle size of the salt mist; S202 Set the atomization conditions; S203 Atomize the salt solution into tiny droplets and conduct screening control on the formed tiny droplets; S204-1 Screen out the tiny droplets that meet the particle size requirements to form the required salt mist; S204-2 The tiny droplets that do not meet the particle size requirements return to the salt solution for re-atomization.

4. The dry salt aerosol generation method based on a salt solution according to claim 3, characterized in that, The salt spray particle size requirement D 液滴 ≤ 30 μm; the atomization conditions include: the gas flow rate generated by the gas source module, the operating frequency of the atomization module, the pore diameter, and the salt solution concentration.

5. The dry salt aerosol generation method based on a salt solution according to claim 1, wherein, In the step S3, the drying methods include one or any combination of two of hot air drying, infrared drying, and microwave drying; The heating components of the hot air drying include electric heating sheets and electric heating wires.

6. The dry salt aerosol generation method based on a salt solution according to claim 5, wherein The specific steps of the drying are as follows: The airflow generated by the air source module sends the salt mist generated by the atomization module into the drying module for drying, and blows out the salt particles formed after drying to form a dry salt aerosol; Or, the airflow generated by the air source module is heated by the heating components of the drying module to form a hot air flow, and the hot air flow dries the salt mist generated by the atomization module, and blows out the salt particles formed after drying to form a dry salt aerosol.

7. The method for generating dry salt aerosol based on a salt solution according to claim 5, characterized in that, The temperature for drying the salt spray is 50~150°C, and the particle size D of the salt particles 盐 ≤5 μm.

8. The method for generating dry salt aerosol based on salt solution according to claim 1, characterized in that, The step S4 is specifically: S301 Detect the dryness of the salt particles; S302 Compare it with the preset dryness of the salt particles to judge whether the detected dryness of the dry salt particles meets the requirements; S303-1 If the dryness meets the requirements, keep the operating parameters unchanged, and blow out the dry salt particles through the airflow generated by the air source module to form a dry salt aerosol; S303-2 If the dryness does not meet the requirements, adjust the operating parameters, including increasing the drying temperature, and / or reducing the airflow speed, and / or reducing the atomization rate, until the dryness meets the requirements, and blow out the salt particles through the airflow generated by the air source module to form a dry salt aerosol.

9. The method for generating dry salt aerosol based on a salt solution according to claim 8, wherein The dryness of the salt particles is detected by an offline method or an online method; the offline detection method is to detect the moisture content of the dry salt particles by the drying method; the online detection method is to detect the moisture content of the dry salt particles by the infrared light method or the microwave method.

10. The dry salt aerosol generation method based on a salt solution according to claim 8, characterized in that, In the step S303-2, when it is detected that the heating temperature reaches the set upper limit, the heating temperature is not increased, and the airflow speed and / or the atomization rate are reduced.

11. The method for generating dry salt aerosol based on a salt solution according to claim 8, wherein In the step S303-2, it also includes increasing the dryness of the salt particles by extending the drying path.

12. The dry salt aerosol generation method based on a salt solution according to any one of claims 1 to 11, characterized in that, The generated dry salt aerosol is directly diffused into the air in the treatment room for multiple people to inhale for treatment, or is supplied to a single person for inhalation treatment through a breathing tube.

13. A dry salt aerosol generating device for implementing the generation method according to any one of claims 1 to 12, characterized in that, It includes an atomization module, an air source module, a drying module, and a dryness measurement module; The atomization module is used to atomize the salt solution into tiny droplets and filter and screen to generate a salt mist that meets the particle size requirements; The drying module is connected to the atomization module and dries the salt mist generated by the atomization module into salt particles; The gas source module is connected to the drying module to provide an air flow, accelerating the drying speed of the salt particles and blowing the dried salt particles out from the air outlet to form dry salt aerosol; The dryness measurement module is arranged between the drying module and the outlet of the ventilation pipeline, or at the outlet of the ventilation pipeline, for detecting the dryness of the salt particles.

14. The dry salt aerosol generating device according to claim 13, wherein, The drying module includes an energy generating component and a drying chamber. The energy generating component includes a heating component, an infrared generating component, and a microwave generating component; The connection mode of the dry salt aerosol generating device specifically includes: The gas source module is connected to the atomizing outlet of the atomizing module after passing through the heating component, and then successively passes through the drying chamber and the dryness measurement module and is connected to the outlet of the ventilation pipeline; Or, the gas source module is connected to the atomizing outlet of the atomizing module, and then successively passes through the drying chamber and the dryness measurement module and is connected to the outlet of the ventilation pipeline, and the energy generating component is arranged in the drying chamber; Or, the gas source module successively passes through the atomizing module, the drying chamber, and the dryness measurement module and is connected to the outlet of the ventilation pipeline, and the energy generating component is arranged in the drying chamber.

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