Mother and infant safe in-vehicle rapid cooling environment-friendly spray and preparation method thereof

Abstract

The invention discloses a mother and infant safe in-vehicle rapid cooling environment-friendly spray and a preparation method thereof. Comprising the following raw materials in parts by weight: 60-70 parts of deionized water, 10-15 parts of food-grade propylene glycol, 5-10 parts of a natural phase change microcapsule material, 3-5 parts of a natural surfactant, 2-4 parts of natural menthol, 1-3 parts of eucalyptus essential oil or eucalyptus essential oil, 0.05-0.1 part of a silver ion solution and 0.1-2 parts of a natural perfume extract. The automobile air conditioner has the beneficial effects of being environmentally friendly and safe, and the problem that when an existing automobile air conditioner is just started, the internal environment temperature of an automobile is high, and rapid cooling cannot be conducted is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile interior environment regulation, and in particular to a maternal and infant safety type environment-friendly spray for rapid cooling in a vehicle and a preparation method thereof. Background Art

[0002] Currently, in hot summer environments, car interior temperatures often rise rapidly to over 50°C, severely impacting passenger comfort and safety. Existing cooling methods primarily rely on air conditioning systems, which suffer from slow startup, high energy consumption, and difficulty effectively lowering the interior temperature in a short period of time.

[0003] There is no spray product on the market that is specifically designed for car interiors, especially for mothers and babies, is environmentally friendly and safe, does not require electricity, and can quickly cool down the car. Therefore, there is a need for a green, safe, convenient, and effective cooling spray for cars. Summary of the Invention

[0004] The purpose of the present invention is to provide a maternal and infant safety type environmentally friendly spray for rapid cooling in a car and a preparation method thereof, which has the advantages of environmental protection and safety, and solves the problem that when the existing car air conditioner is just started, the internal ambient temperature of the car is high and the temperature cannot be quickly cooled.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a maternal and infant safety, rapid cooling and environmentally friendly spray for in-car use, comprising the following raw materials in parts by weight:

[0006] 60-70 parts of deionized water, 10-15 parts of food-grade propylene glycol, 5-10 parts of natural phase change microcapsule material, 3-5 parts of natural surfactant, 2-4 parts of natural menthol, 1-3 parts of eucalyptus essential oil or eucalyptus essential oil, 0.05-0.1 parts of silver ion solution, and 0.1-2 parts of natural flavor extract.

[0007] A method for preparing a maternal and infant safety rapid cooling spray for a vehicle, comprising the following steps:

[0008] S1. Phase change material microencapsulation: Use spray drying or condensation polymerization to prepare microcapsules of natural phase change materials, such as fatty acid derivatives or plant wax-based PCMs, and ensure that the prepared microcapsules have good stability and sustained release properties;

[0009] S2. Prepare the base solution by adding deionized water and food-grade propylene glycol in a mixing device in proportion and stirring thoroughly until uniformly mixed to form a base solution;

[0010] S3, adding volatile components, adding natural menthol, eucalyptus essential oil or eucalyptus essential oil and natural flavor extract to the base solution in sequence, stirring at a low speed for 30 minutes after each addition of an ingredient to ensure that all ingredients are evenly dispersed to form a mixture;

[0011] S4. Add phase change microcapsules and silver ion solution. Slowly add the phase change material microcapsules and silver ion solution to the mixture while maintaining a constant temperature, and continue stirring to ensure that all components are evenly dispersed in the mixture.

[0012] S5. Adding a natural surfactant: adding a natural surfactant to the mixture and stirring, wherein the natural surfactant is a coconut oil extract to improve the stability and uniformity of the spray;

[0013] S6. Filtration and purification: Use a high-precision filter to filter the prepared mixture to remove impurities in the mixture and avoid clogging of the spray can nozzle to form a spray;

[0014] S7, non-pressure spray canning, the filtered and purified spray is placed in an environmentally friendly spray bottle, which is a propellant-free packaging method;

[0015] S8. Simulation test: spray a fixed amount of spray in a closed car space at room temperature of 35℃. Test the temperature of the car space 2 minutes after spraying. The air temperature in the car drops by 10-12℃.

[0016] As a preferred maternal and infant safety type in-car rapid cooling environmentally friendly spray and its preparation method of the present invention, when using the spray drying method to prepare microcapsules of natural phase change material in S1, an emulsifier is first used to heat and mix the natural phase change material and gelatin to prepare a uniform emulsion, and then a high-speed emulsifier is used to emulsify the emulsion, and the emulsified emulsion is transported to a high-pressure atomizer, and the emulsion is evaporated by a high-temperature airflow to form dry microcapsule particles, the microcapsule particles are cooled and shaped, and then the finished product is collected by a cyclone separator.

[0017] As a preferred maternal and infant safety type in-car rapid cooling environmentally friendly spray and its preparation method of the present invention, when using the condensation polymerization method in S1 to prepare microcapsules of natural phase change materials, the natural phase change material is dispersed in an organic solvent to form an oil phase solution, gelatin is dissolved in water to form an aqueous phase solution, the oil phase solution is slowly added to the continuously stirred aqueous phase solution, and processed into a stable emulsion by a high-speed shear machine. The aqueous phase solution is phase separated and deposited on the surface of the oil phase solution by lowering the temperature. Under constant temperature stirring conditions, a cross-linking agent is added to the emulsion to enhance the mechanical strength and stability of the aqueous phase solution, and finally microcapsule particles are formed. The formed microcapsule particles are washed multiple times using a centrifuge to remove unreacted cross-linking agent and impurities, and then the washed microcapsule particles are dried.

[0018] As a preferred maternal and child safety type in-car rapid cooling environmentally friendly spray and its preparation method of the present invention, the mixing equipment in S2 is a multifunctional planetary vacuum constant temperature stirring equipment, the multifunctional planetary vacuum constant temperature stirring equipment includes a mixing chamber, a stirring system, a feeding system and a temperature control and vacuum system, the mixing chamber is a jacketed stainless steel reactor, the jacketed stainless steel reactor controls the temperature during the mixing process by circulating heating liquid and cooling liquid, the stirring system includes a planetary stirring paddle and a high-speed shear emulsification head, the planetary stirring paddle includes multi-layer blades, the high-speed shear emulsification head is installed at the bottom of the inner cavity of the mixing chamber, and forms a layered design with the planetary stirring paddle to avoid interference, the feeding system includes four independent feeding ports, which are used for feeding basic solution, volatile components, phase change microcapsules and silver ion solution and natural surfactant respectively, each feeding port is equipped with a quantitative control device, and the temperature control and vacuum system controls the inner cavity temperature and internal vacuum degree of the mixing chamber.

[0019] As a preferred embodiment of the present invention, a maternal and infant safety type in-car rapid cooling environmentally friendly spray and its preparation method, during the operation of the mixing device, deionized water and food-grade propylene glycol are added in proportion through the base solution feeding port. After the feeding is completed, the feeding port is closed and sealed, and the planetary stirring paddle is started to stir at a low speed, with an orbital speed of about 40 rpm, and stirring is continued until the solution is uniform. The mixing is maintained at normal pressure and no vacuum environment is required. After the mixing is completed, natural menthol, eucalyptus essential oil or eucalyptus essential oil and natural spice extract are added through the volatile component feeding port. After each ingredient is added, the planetary stirring paddle is immediately started to stir for 30 minutes to ensure uniform dispersion. During the stirring process, the vacuum pump is turned on to maintain a vacuum degree of -0.08 to -0. 1MPa, reduce the loss of volatile components, slowly add the pre-prepared phase change microcapsules through the phase change material feeding port, and continuously add silver ion solution at the same time, start the planetary stirring paddle and high-speed shear emulsification head for continuous stirring to ensure that the phase change microcapsules and silver ion solution are evenly dispersed in the mixed liquid, and maintain the mixing chamber temperature within the set range through the jacket circulation system. The setting range is 40-60°C, and coconut oil extract is added through the natural surfactant feeding port. After the feeding is completed, the feeding port is closed and sealed, and the planetary stirring paddle is started to stir for 5-10 minutes to improve the stability of the mixture and the spraying uniformity. After the mixing is completed, the stirring system and vacuum pump are turned off, and the conical discharge valve at the bottom of the mixing chamber is opened to discharge the mixed spray into the storage tank.

[0020] As a preferred mother-and-baby safety, in-car rapid cooling and environmentally friendly spray and its preparation method of the present invention, the high-precision filter in S6 includes a filter cylinder, a filter bag, a support basket, a control valve, and a backwash interface. The support basket is installed inside the filter cylinder to support the filter bag. The spray enters and exits the filter cylinder through the control valve. The backwash interface is connected to the backwash equipment to backwash the filter bag inside the filter cylinder.

[0021] As a preferred embodiment of the present invention, a maternal and infant safety type in-car rapid cooling environmentally friendly spray and its preparation method, during the operation of the high-precision filter, the spray enters the filter cylinder through the liquid inlet control valve, the liquid penetrates the filter bag under pressure, and impurities are intercepted on the outside of the filter bag. The pore size of the filter bag is 1 to 5 μm to remove silver ion precipitates, undispersed microcapsule particles and impurities. The purified liquid is discharged through the liquid outlet control valve and enters the spray can packaging link. When the inlet and outlet pressure difference of the control valve exceeds the set value, the PLC automatically starts the backwash program. During the backwash operation, close the control valve, open the backwash interface, flush the surface of the filter bag with reverse water flow, remove the trapped impurities, and discharge the impurities and cleaning liquid through the sewage outlet on the filter cylinder. After the backwash is completed, reopen the control valve to resume the filtration process.

[0022] As a preferred embodiment of the present invention, a maternal and infant safety, in-car rapid cooling, environmentally friendly spray and its preparation method, when the spray is loaded into the environmentally friendly spray bottle in S7, pressureless spray canning equipment is used for filling, and the pressureless spray canning equipment includes a feeding system, a metering system, a filling system, a container handling system and a sealing system.

[0023] As a preferred embodiment of the present invention, a maternal and child safety, in-car rapid cooling, environmentally friendly spray and its preparation method, when the pressureless spray filling equipment is in operation, the spray to be filled is transported from the liquid storage tank to the metering system through a pumping device, the container processing system disinfects the empty environmentally friendly spray bottle in advance, and then the spray bottle is sent to the designated position for filling through the feeding system. The metering system accurately measures the spray dosage required for each filling according to preset parameters. When the empty environmentally friendly spray bottle moves to the filling position, the feeding system stops working, the filling head descends to the opening of the spray bottle, and begins filling according to the instructions of the metering system. After the filling is completed, the filling head rises to complete the single filling process. The feeding system then moves the filled spray bottle to the sealing area, and the spray bottle is sealed by the sealing system.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention provides a maternal and infant-safe, environmentally friendly spray for rapid cooling in vehicles. The spray adopts natural phase change materials, volatile components extracted from plants, and antibacterial factors. It achieves rapid cooling of the vehicle interior through the synergistic effect of physical heat absorption, evaporative cooling, and the human body's cold sensation mechanism. The ingredients are environmentally friendly and harmless and meet safety standards.

[0026] 2. The present invention selects natural phase change materials and propellant-free spray bottle packaging, which reduces pollution to the environment and embodies the concept of green environmental protection. The spray can significantly reduce the temperature in the car in a short time, providing users with an instant cool experience. The microencapsulated phase change material not only improves the stability and durability of the product, but also can achieve the effect of slowly releasing heat or cold, thereby extending the cooling time. The addition of natural surfactants helps to improve the stability of the spray and ensure that it can be evenly distributed in the air during spraying, thereby improving the cooling efficiency and enhancing the user experience. The added eucalyptus essential oil or eucalyptus essential oil not only brings a fresh fragrance, but also has a certain air purification effect. Combined with the cool feeling provided by natural menthol, the comfort in the car is improved together. The high-precision filter is used for filtration and purification to effectively remove impurities in the mixture, prevent nozzle clogging problems, and ensure the long-term normal use of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the preparation process of the present invention. DETAILED DESCRIPTION

[0028] Example 1

[0029] A maternal and infant-safe, rapid cooling spray for vehicles, comprising the following raw materials in parts by weight:

[0030] 60-70 parts of deionized water, 10-15 parts of food-grade propylene glycol, 5-10 parts of natural phase change microcapsule material, 3-5 parts of natural surfactant, 2-4 parts of natural menthol, 1-3 parts of eucalyptus essential oil or eucalyptus essential oil, 0.05-0.1 parts of silver ion solution, and 0.1-2 parts of natural flavor extract.

[0031] Deionized water, as the primary solvent, can effectively remove minerals and other impurities, reducing the risk of allergic reactions in sensitive individuals. It is also a good carrier for other active ingredients. Food-grade propylene glycol is a commonly used moisturizer and solvent that lowers the freezing point and increases product stability and durability. Natural phase-change microcapsule materials can absorb or release heat at specific temperatures, helping to regulate ambient temperature and achieve rapid cooling in the vehicle. Natural surfactants help the various ingredients mix better and promote even dispersion of the spray during spraying. Natural menthol can bring a cooling sensation, making people feel refreshed and comfortable. Eucalyptus or eucalyptus essential oils can provide a pleasant aroma, help purify the air, and relieve fatigue. Silver ion solution has good antibacterial and antiviral properties. Natural spice extracts can give the spray a fragrance, enhancing the user experience.

[0032] Example 2

[0033] See also Figure 1 A method for preparing a maternal and infant safety rapid cooling spray for a car comprises the following steps:

[0034] S1. Phase change material microencapsulation: Use spray drying or condensation polymerization to prepare microcapsules of natural phase change materials, such as fatty acid derivatives or plant wax-based PCMs, and ensure that the prepared microcapsules have good stability and sustained release properties;

[0035] S2. Prepare the base solution by adding deionized water and food-grade propylene glycol in a mixing device in proportion and stirring thoroughly until uniformly mixed to form a base solution;

[0036] S3, adding volatile components, adding natural menthol, eucalyptus essential oil or eucalyptus essential oil and natural flavor extract to the base solution in sequence, stirring at a low speed for 30 minutes after each addition of an ingredient to ensure that all ingredients are evenly dispersed to form a mixture;

[0037] S4. Add phase change microcapsules and silver ion solution. Slowly add the phase change material microcapsules and silver ion solution to the mixture while maintaining a constant temperature, and continue stirring to ensure that all components are evenly dispersed in the mixture.

[0038] S5. Adding a natural surfactant: adding a natural surfactant to the mixture and stirring, wherein the natural surfactant is a coconut oil extract to improve the stability and uniformity of the spray;

[0039] S6. Filtration and purification: Use a high-precision filter to filter the prepared mixture to remove impurities in the mixture and avoid clogging of the spray can nozzle to form a spray;

[0040] S7, non-pressure spray canning, the filtered and purified spray is placed in an environmentally friendly spray bottle, which is a propellant-free packaging method;

[0041] S8. Simulation test: spray a fixed amount of spray in a closed car space at room temperature of 35℃. Test the temperature of the car space 2 minutes after spraying. The air temperature in the car drops by 10-12℃.

[0042] By choosing natural phase change materials and propellant-free spray bottle packaging, pollution to the environment is reduced and the concept of green environmental protection is embodied. The spray can significantly reduce the temperature in the car in a short period of time, providing users with an instant cool experience. The microencapsulated phase change material not only improves the stability and durability of the product, but also can achieve the effect of slowly releasing heat or cold, thereby extending the cooling time. The addition of natural surfactants helps to improve the stability of the spray and ensure that it can be evenly distributed in the air when spraying, thereby improving the cooling efficiency and enhancing the user experience. The added eucalyptus essential oil or eucalyptus essential oil not only brings a refreshing fragrance, but also has a certain air purification effect. Combined with the cool feeling provided by natural menthol, the comfort in the car is improved together. The high-precision filter is used for filtration and purification to effectively remove impurities in the mixture, prevent nozzle clogging problems, and ensure the long-term normal use of the product.

[0043] Furthermore, when the spray drying method is used in S1 to prepare microcapsules of natural phase change materials, the natural phase change material and gelatin are first heated and mixed using an emulsifier to prepare a uniform emulsion, and then the emulsion is emulsified using a high-speed emulsifier. The emulsion after emulsification is transported to a high-pressure atomizer, and the emulsion is evaporated by a high-temperature airflow to form dry microcapsule particles. The microcapsule particles are cooled and shaped, and then the finished product is collected by a cyclone separator.

[0044] Furthermore, when using the condensation polymerization method in S1 to prepare microcapsules of natural phase change materials, the natural phase change material is dispersed in an organic solvent to form an oil phase solution, gelatin is dissolved in water to form an aqueous phase solution, the oil phase solution is slowly added to the continuously stirred aqueous phase solution, and processed into a stable emulsion by a high-speed shearing machine. The aqueous phase solution is phase-separated and deposited on the surface of the oil phase solution by lowering the temperature. Under constant temperature stirring conditions, a cross-linking agent is added to the emulsion to enhance the mechanical strength and stability of the aqueous phase solution, and finally microcapsule particles are formed. The formed microcapsule particles are washed multiple times using a centrifuge to remove unreacted cross-linking agent and impurities, and then the washed microcapsule particles are dried.

[0045] In the spray drying method, the solvent is evaporated by high-temperature air flow and then quickly cooled and shaped, which helps to form a dense and uniform microcapsule shell. The condensation polymerization method controls the temperature to induce phase separation and cross-linking reactions, making the shell material more tightly wrapped and improving the mechanical strength. Microencapsulation can wrap the phase change material in the shell material, which slowly absorbs heat when heated and releases heat when cooled, achieving controllable energy regulation. The shell material thickness and material selection can regulate the release rate.

[0046] Furthermore, the mixing equipment in S2 is a multifunctional planetary vacuum constant temperature stirring equipment, which includes a mixing chamber, a stirring system, a feeding system and a temperature control and vacuum system. The mixing chamber is a jacketed stainless steel reactor. The jacketed stainless steel reactor controls the temperature during the mixing process by circulating heating liquid and cooling liquid. The stirring system includes a planetary stirring paddle and a high-speed shear emulsification head. The planetary stirring paddle includes multi-layer blades. The high-speed shear emulsification head is installed at the bottom of the inner cavity of the mixing chamber, forming a layered design with the planetary stirring paddle to avoid interference. The feeding system includes four independent feeding ports, which are used for feeding basic solution, volatile components, phase change microcapsules and silver ion solution and natural surfactants respectively. Each feeding port is equipped with a quantitative control device, and the temperature control and vacuum system controls the inner cavity temperature and internal vacuum degree of the mixing chamber.

[0047] Furthermore, during the operation of the mixing equipment, deionized water and food-grade propylene glycol are added in proportion through the feeding port of the basic solution. After the feeding is completed, the feeding port is closed and sealed, and the planetary stirring paddle is started for low-speed stirring with an orbital speed of about 40 rpm. Stirring is continued until the solution is uniform. This mixing is maintained at normal pressure and no vacuum environment is required. After the mixing is completed, natural menthol, eucalyptus essential oil or eucalyptus essential oil and natural spice extract are added through the volatile component feeding port. After each ingredient is added, the planetary stirring paddle is immediately started for stirring for 30 minutes to ensure uniform dispersion. During the stirring process, the vacuum pump is turned on to maintain a vacuum degree of -0.08 to -0.1 MPa to reduce the loss of volatile components. , slowly add the pre-prepared phase change microcapsules through the phase change material feeding port, and continuously add silver ion solution at the same time, start the planetary stirring paddle and high-speed shear emulsification head for continuous stirring to ensure that the phase change microcapsules and silver ion solution are evenly dispersed in the mixed liquid, and maintain the mixing chamber temperature within the set range through the jacket circulation system. The setting range is 40-60°C, and coconut oil extract is added through the natural surfactant feeding port. After the feeding is completed, the feeding port is closed and sealed, and the planetary stirring paddle is started to stir for 5-10 minutes to improve the stability of the mixture and the spraying uniformity. After the mixing is completed, the stirring system and vacuum pump are turned off, and the conical discharge valve at the bottom of the mixing chamber is opened to discharge the mixed spray into the storage tank.

[0048] The layered design of planetary agitators and high-speed shear emulsification heads ensures that the mixture is fully mixed at different levels. The planetary agitators can cover a large area of ​​the mixture, while the high-speed shear emulsification head can perform more refined processing on local areas, thereby ensuring that all ingredients are evenly dispersed. Different ingredients are added in sequence through independent feeding ports and are fully stirred after each addition to ensure that each ingredient is evenly distributed without reaction or precipitation. When adding volatile ingredients such as natural menthol, eucalyptus essential oil or eucalyptus essential oil, turning on the vacuum pump to maintain a certain vacuum degree can effectively reduce the volatilization loss of these ingredients and maintain the aroma and active ingredient content of the product. By circulating heating liquid and cooling liquid, the temperature during the mixing process can be accurately adjusted and maintained to maintain the stability and activity of certain sensitive ingredients, which is also conducive to the effective dispersion of phase change microcapsules.

[0049] Furthermore, the high-precision filter in S6 includes a filter cylinder, a filter bag, a support basket, a control valve, and a backwash interface. The support basket is installed inside the filter cylinder to support the filter bag. The spray enters and exits the filter cylinder through the control valve. The backwash interface is connected to the backwash equipment to backwash the filter bag inside the filter cylinder.

[0050] Furthermore, during the operation of the high-precision filter, the spray enters the filter cylinder through the liquid inlet control valve. The liquid penetrates the filter bag under pressure, and impurities are intercepted on the outside of the filter bag. The pore size of the filter bag is 1 to 5 μm to remove silver ion precipitates, undispersed microcapsule particles and impurities. The purified liquid is discharged through the liquid outlet control valve and enters the spray can packaging link. When the inlet and outlet pressure difference of the control valve exceeds the set value, the PLC automatically starts the backwash program. During the backwash operation, close the control valve, open the backwash interface, and flush the surface of the filter bag with reverse water flow to remove the trapped impurities. The impurities and cleaning liquid are discharged through the sewage outlet on the filter cylinder. After the backwash is completed, reopen the control valve to resume the filtration process.

[0051] The pore size of the filter bag is 1 to 5 μm, which can effectively remove silver ion precipitates, undispersed microcapsule particles and other impurities, ensuring the purity and quality of the final spray product. Through fine filtration, small particulate matter that may cause nozzle clogging is prevented from entering the finished product, thereby ensuring the smooth operation of the spraying system. The filter effectively intercepts various impurities, reducing the wear or damage of these impurities to subsequent packaging equipment, and helping to extend the service life of the entire production line equipment. When the inlet and outlet pressure difference exceeds the set value, the PLC control system automatically starts the backwash program and completes the cleaning process without manual intervention, saving labor costs and reducing the risks caused by human operational errors. The designed drain port facilitates the discharge of impurities and cleaning fluids, simplifying daily maintenance work. The design of the support basket also provides additional support for the filter bag, extending the service life of the filter bag. During the backwash process, the control valve only needs to be briefly closed, and the entire system can be restored to normal filtration status in a short time, minimizing downtime and improving overall production efficiency.

[0052] Furthermore, when the spray is put into the environmentally friendly spray bottle in S7, pressureless spray canning equipment is used for filling. The pressureless spray canning equipment includes a feeding system, a metering system, a filling system, a container handling system and a sealing system.

[0053] Furthermore, when the pressureless spray filling equipment is working, the spray to be filled is transported from the liquid storage tank to the metering system through the pumping device. The container handling system disinfects the empty environmentally friendly spray bottle in advance, and then sends the spray bottle to the designated position for filling through the feeding system. The metering system accurately measures the spray dosage required for each filling according to preset parameters. When the empty environmentally friendly spray bottle moves to the filling position, the feeding system stops working, and the filling head descends to the opening of the spray bottle and starts filling according to the instructions of the metering system. After filling is completed, the filling head rises to complete the single filling process. The feeding system then moves the filled spray bottle to the sealing area and seals the spray bottle through the sealing system.

[0054] The container handling system disinfects the empty environmentally friendly spray bottles in advance to ensure the initial environmental cleanliness of the product. It is particularly suitable for the requirements of maternal and child safety products. The entire filling process is completed in a relatively closed environment, reducing the possibility of external contamination. The metering system accurately measures the spray dosage required for each filling according to preset parameters to ensure that each bottle of spray contains the correct ingredient ratio, maintaining the stability and effectiveness of the product. By precisely controlling the position and speed of the filling head, uniform and bubble-free filling can be achieved, avoiding product quality problems caused by uneven filling. From feeding, metering, filling to sealing, the entire process is highly automated, which greatly improves production efficiency and reduces labor costs. The seamless connection between systems supports continuous production, shortens the processing time of a single bottle, and increases output per unit time.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A maternal and infant safety type rapid cooling spray for vehicles, characterized by: The composition comprises the following raw materials in parts by weight: 60-70 parts of deionized water, 10-15 parts of food-grade propylene glycol, 5-10 parts of natural phase change microcapsule material, 3-5 parts of natural surfactant, 2-4 parts of natural menthol, 1-3 parts of eucalyptus essential oil or eucalyptus essential oil, 0.05-0.1 parts of silver ion solution, and 0.1-2 parts of natural flavor extract.

2. A method for preparing a maternal and infant safety type rapid cooling and environmentally friendly spray for in-car use, applicable to the maternal and infant safety type rapid cooling and environmentally friendly spray for in-car use according to claim 1, characterized in that: The following steps are involved: S1. Phase change material microencapsulation: Use spray drying or condensation polymerization to prepare microcapsules of natural phase change materials, such as fatty acid derivatives or plant wax-based PCMs, and ensure that the prepared microcapsules have good stability and sustained release properties; S2. Prepare the base solution by adding deionized water and food-grade propylene glycol in a mixing device in proportion and stirring thoroughly until uniformly mixed to form a base solution; S3, adding volatile components, adding natural menthol, eucalyptus essential oil or eucalyptus essential oil and natural flavor extract to the base solution in sequence, stirring at a low speed for 30 minutes after each addition of an ingredient to ensure that all ingredients are evenly dispersed to form a mixture; S4. Add phase change microcapsules and silver ion solution. Slowly add the phase change material microcapsules and silver ion solution to the mixture while maintaining a constant temperature, and continue stirring to ensure that all components are evenly dispersed in the mixture. S5. Adding a natural surfactant: adding a natural surfactant to the mixture and stirring, wherein the natural surfactant is a coconut oil extract to improve the stability and uniformity of the spray; S6. Filtration and purification: Use a high-precision filter to filter the prepared mixture to remove impurities in the mixture and avoid clogging of the spray can nozzle to form a spray; S7, non-pressure spray canning, the filtered and purified spray is placed in an environmentally friendly spray bottle, which is a propellant-free packaging method; S8. Simulation test: spray a fixed amount of spray in a closed car space at room temperature of 35℃. Test the temperature of the car space 2 minutes after spraying. The air temperature in the car drops by 10-12℃.

3. The method for preparing a maternal and infant safety rapid cooling spray for vehicles according to claim 2, characterized in that: When the spray drying method is used in S1 to prepare microcapsules of natural phase change materials, the natural phase change material and gelatin are first heated and mixed using an emulsifier to prepare a uniform emulsion, and then the emulsion is emulsified using a high-speed emulsifier. The emulsion after emulsification is transported to a high-pressure atomizer, and the emulsion is evaporated by a high-temperature airflow to form dry microcapsule particles. The microcapsule particles are cooled and shaped, and then the finished product is collected by a cyclone separator.

4. The method for preparing the environmentally friendly spray for rapid cooling in vehicles for maternal and infant safety according to claim 3, characterized in that: When using the condensation polymerization method to prepare microcapsules of natural phase change materials in S1, the natural phase change material is dispersed in an organic solvent to form an oil phase solution, gelatin is dissolved in water to form an aqueous phase solution, the oil phase solution is slowly added to the continuously stirred aqueous phase solution, and processed into a stable emulsion by a high-speed shearing machine. The aqueous phase solution is phase-separated by lowering the temperature and deposited on the surface of the oil phase solution. Under constant temperature stirring conditions, a cross-linking agent is added to the emulsion to enhance the mechanical strength and stability of the aqueous phase solution, and finally microcapsule particles are formed. The formed microcapsule particles are washed multiple times using a centrifuge to remove unreacted cross-linking agent and impurities, and then the washed microcapsule particles are dried.

5. The method for preparing the environmentally friendly spray for rapid cooling in vehicles for maternal and infant safety according to claim 4, characterized in that: The mixing equipment in S2 is a multifunctional planetary vacuum constant temperature stirring equipment, which includes a mixing chamber, a stirring system, a feeding system and a temperature control and vacuum system. The mixing chamber is a jacketed stainless steel reactor. The jacketed stainless steel reactor controls the temperature during the mixing process by circulating heating liquid and cooling liquid. The stirring system includes a planetary stirring paddle and a high-speed shear emulsification head. The planetary stirring paddle includes multi-layer blades. The high-speed shear emulsification head is installed at the bottom of the inner cavity of the mixing chamber, forming a layered design with the planetary stirring paddle to avoid interference. The feeding system includes four independent feeding ports, which are used for feeding basic solution, volatile components, phase change microcapsules, silver ion solution and natural surfactant respectively. Each feeding port is equipped with a quantitative control device. The temperature control and vacuum system controls the inner cavity temperature and internal vacuum degree of the mixing chamber.

6. The method for preparing the environmentally friendly spray for rapid cooling in vehicles for maternal and infant safety according to claim 5, characterized in that: During the operation of the mixing equipment, deionized water and food-grade propylene glycol are added in proportion through the feeding port of the basic solution. After the feeding is completed, the feeding port is closed and sealed, and the planetary stirring paddle is started for low-speed stirring with an orbital speed of about 40 rpm. Stirring is continued until the solution is uniform. The mixing is kept at normal pressure without the need for a vacuum environment. After the mixing is completed, natural menthol, eucalyptus essential oil or eucalyptus essential oil and natural spice extract are added through the volatile component feeding port. After each addition of an ingredient, the planetary stirring paddle is immediately started for stirring for 30 minutes to ensure uniform dispersion. After the stirring process, the vacuum pump is turned on to maintain a vacuum degree of -0.08 to -0.1 MPa to reduce the loss of volatile components. Slowly add the pre-prepared phase change microcapsules through the phase change material feeding port, and continuously add silver ion solution at the same time, start the planetary stirring paddle and high-speed shear emulsification head for continuous stirring to ensure that the phase change microcapsules and silver ion solution are evenly dispersed in the mixed liquid, and maintain the mixing chamber temperature within the set range of 40-60°C through the jacket circulation system. Add coconut oil extract through the natural surfactant feeding port. After the feeding is completed, close the feeding port and seal it, start the planetary stirring paddle and stir for 5-10 minutes to improve the stability of the mixture and the spraying uniformity. After the mixing is completed, turn off the stirring system and vacuum pump, open the conical discharge valve at the bottom of the mixing chamber, and discharge the mixed spray into the storage tank.

7. The method for preparing the environmentally friendly spray for rapid cooling in vehicles for maternal and infant safety according to claim 6, characterized in that: The high-precision filter in the S6 includes a filter cylinder, a filter bag, a support basket, a control valve, and a backwash interface. The support basket is installed inside the filter cylinder to support the filter bag. The spray enters and exits the filter cylinder through the control valve. The backwash interface is connected to the backwash equipment to backwash the filter bag inside the filter cylinder.

8. The method for preparing the environmentally friendly spray for rapid cooling in vehicles for maternal and infant safety according to claim 7, characterized in that: During the operation of the high-precision filter, the spray enters the filter cylinder through the liquid inlet control valve. The liquid penetrates the filter bag under pressure, and impurities are intercepted on the outside of the filter bag. The pore size of the filter bag is 1 to 5 μm to remove silver ion precipitates, undispersed microcapsule particles and impurities. The purified liquid is discharged through the liquid outlet control valve and enters the spray can packaging link. When the inlet and outlet pressure difference of the control valve exceeds the set value, the PLC automatically starts the backwash program. During the backwash operation, close the control valve, open the backwash interface, and flush the surface of the filter bag with reverse water flow to remove the trapped impurities. The impurities and cleaning liquid are discharged through the sewage outlet on the filter cylinder. After the backwash is completed, reopen the control valve to resume the filtration process.

9. The method for preparing the environmentally friendly spray for rapid cooling in vehicles for maternal and infant safety according to claim 8, characterized in that: When the spray is filled into the environmentally friendly spray bottle in S7, a pressureless spray canning device is used for filling. The pressureless spray canning device includes a feeding system, a metering system, a filling system, a container handling system and a sealing system.

10. The method for preparing the environmentally friendly spray for rapid cooling in vehicles with maternal and infant safety according to claim 9, characterized in that: When the pressureless spray filling equipment is working, the spray to be filled is transported from the liquid storage tank to the metering system through the pumping device. The container handling system disinfects the empty environmentally friendly spray bottle in advance, and then the spray bottle is sent to the designated position for filling through the feeding system. The metering system accurately measures the spray dosage required for each filling according to preset parameters. When the empty environmentally friendly spray bottle moves to the filling position, the feeding system stops working, the filling head descends to the opening of the spray bottle, and begins to fill according to the instructions of the metering system. After the filling is completed, the filling head rises to complete the single filling process. The feeding system then moves the filled spray bottle to the sealing area, and the spray bottle is sealed by the sealing system.

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