Process, equipment, dual-phase change material and product made of granular dual-phase change material

Abstract

The present invention provides a process, equipment, dual-phase change material and product made of granular dual-phase change material, relating to the technical field of phase change materials, and realizing a simple manufacturing process and low manufacturing cost. The process includes the following steps: Step S1, preparing materials c and d to be pulverized in two stirring tanks respectively; Step S2, transferring the materials in the two stirring tanks to the corresponding two pulverizing tanks respectively; Step S3, the pulverizing tank pulverizes the materials, and during the pulverizing process, the powder particles enter the mixing tank through the filter screen in the tank under the action of the positive pressure in the pulverizing tank; Step S4, stirring the two kinds of powder particles in the mixing tank to obtain the dual-phase change material. The process for making the granular dual-phase change material provided by the present invention is more conducive to meeting the needs of customers.

Description

Technical Field

[0001] The present invention relates to the technical field of phase change materials, and in particular to a process, equipment, double-phase change material and product made of granular double-phase change materials. Background Art

[0002] Phase change materials (PCMs) can absorb or release a large amount of latent heat during the phase change process and have a wide range of application spaces in industries such as cold chain transportation and solar energy.

[0003] Currently, the phase change materials widely used in the cold chain transportation industry are mainly aqueous solutions and organic alkane liquids, which belong to solid-liquid phase change materials. Solid-liquid phase change materials have problems such as liquid leakage, large packaging weight, and packaging deformation caused by thermal expansion and contraction.

[0004] A few companies have begun to prepare solid-state phase change materials. Solid-state phase change materials belong to solid-solid phase change materials and always remain in the solid state, thus avoiding problems such as liquid leakage and packaging.

[0005] The main feature of granular solid-state phase change materials is that they remain granular after solidifying below the phase change point and do not form a whole. Granular solid-state phase change materials are different from the microcapsule phase change materials on the market. The present invention mainly provides a manufacturing process for granular solid-state double-phase change point phase change materials, with a simple manufacturing process, low cost, and a wide range of applications for granular double-phase change materials, which is more conducive to meeting customer needs. Summary of the Invention

[0006] One of the purposes of the present invention is to provide a process for manufacturing granular double-phase change materials, with a simple manufacturing process and low cost;

[0007] Another purpose of the present invention is to provide a process processing equipment for preparing granular double-phase change materials;

[0008] A third purpose of the present invention is to provide a double-phase change material and product, with a wide range of applications for granular double-phase change materials, which is more conducive to meeting customer needs.

[0009] The many technical effects that can be produced by the preferred technical solutions among the many technical solutions provided by the present invention are described in detail below.

[0010] To achieve the above purposes, the present invention provides the following technical solutions:

[0011] A process for manufacturing granular dual-phase change materials provided by the present invention includes the following: Step S1, preparing materials c and d to be pulverized in two stirring tanks respectively; Step S2, transferring the materials in the two stirring tanks to the corresponding two pulverizing tanks respectively; Step S3, the pulverizing tank pulverizes the materials. During the pulverizing process, the powder particles enter the mixing tank through the filter screen in the tank under the action of the positive pressure in the pulverizing tank; Step S4, stirring the two kinds of powder particles in the mixing tank to obtain the dual-phase change materials.

[0012] Further, in the step S1, it includes the following: adding the main phase change material A solution and additive a particles into the stirring tank A, and adding the main phase change material B solution and additive a particles into the stirring tank B; controlling the temperature and rotation speed of the stirring tank A and the stirring tank B, and after stirring for a set time, material c is formed in the stirring tank A and material d is formed in the stirring tank B.

[0013] Further, in the step S2, it includes the following: opening the valve bodies on the stirring tank A and the stirring tank B, so that the material c in the stirring tank A falls into the pulverizing tank A, and the material d in the stirring tank B falls into the pulverizing tank B.

[0014] Further, in the stirring tank A, the mass ratio of the main phase change material A solution is 85% and the mass ratio of the additive a particles is 15%; in the stirring tank B, the mass ratio of the main phase change material B solution is 85% and the mass ratio of the additive a particles is 15%.

[0015] Further, in the step S3, the pulverizing tank is maintained in a positive pressure state by a blower; a refrigeration system is connected to keep the temperature in the pulverizing tank within the controlled temperature range; the pulverizing tank is controlled to stir at a low speed for a preset time to complete the cooling of the materials in the two pulverizing tanks; after the cooling is completed, the pulverizing tank rotates at a high speed to pulverize the cooled materials.

[0016] Further, the positive pressure value in the pulverizing tank is between 18 kPa and 22 kPa.

[0017] Further, when the materials are cooled, the materials in the pulverizing tank are in a frozen state.

[0018] Further, the diameter range of the powder particles entering the mixing tank from the pulverizing tank is 0.1 mm to 0.2 mm.

[0019] An apparatus for implementing the process of manufacturing the granular double-phase change material includes a stirring tank A, a stirring tank B, a pulverizing tank A, a pulverizing tank B, and a mixing tank. Among them, the stirring tank A is arranged above the pulverizing tank A, the stirring tank A is connected to the pulverizing tank A, and a valve body is arranged between the two; the stirring tank B is arranged above the pulverizing tank B, the stirring tank B is connected to the pulverizing tank B, and a valve body is arranged between the two; both the pulverizing tank A and the pulverizing tank B are connected to the mixing tank, and a filter screen is arranged between the pulverizing tank A and the mixing tank and between the pulverizing tank B and the mixing tank; both the pulverizing tank A and the pulverizing tank B are connected with a blower, and a refrigeration system is connected to both the pulverizing tank A and the pulverizing tank B. The particles in the pulverizing tank A can enter the mixing tank through the filter screen under the action of wind pressure, and the particles in the pulverizing tank B can enter the mixing tank through the filter screen under the action of wind pressure.

[0020] The present invention provides a double-phase change material, which is manufactured by adopting the process of manufacturing the granular double-phase change material.

[0021] The present invention provides a phase change product, which is filled with the double-phase change material.

[0022] The present invention can produce the following technical effects: The present invention provides a process for manufacturing a granular double-phase change material, including the following contents: Step S1, respectively preparing the materials to be pulverized c and d in two stirring tanks; Step S2, transferring the materials in the two stirring tanks to the corresponding two pulverizing tanks respectively; Step S3, the pulverizing tanks pulverize the materials. During the pulverizing process, the powder particles enter the mixing tank through the filter screen in the pulverizing tank under the action of the positive pressure in the tank; Step S4, stirring the two kinds of powder particles in the mixing tank to obtain the double-phase change material. The manufacturing process of the granular solid double-phase change point phase change material provided by the present invention has a simple manufacturing process and low cost, and can solve the problems of high manufacturing cost and complex process. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a flowchart of the process for manufacturing the granular double-phase change material provided by the embodiment of the present invention;

[0025] Figure 2It is a structural diagram of the equipment for completing the manufacturing process of granular double-phase change materials provided by the embodiments of the present invention.

[0026] In the figure, 1 - Stirring tank A; 2 - Stirring tank B; 3 - Crushing tank A; 4 - Crushing tank B; 5 - Mixing tank; 6 - Floor slab; 7 - Fan A; 8 - Fan B. Specific embodiments

[0027] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope protected by the present invention.

[0028] The present invention provides a process for manufacturing granular double-phase change materials, including the following: Step S1, preparing the materials c and d to be crushed in two stirring tanks respectively; Step S2, transferring the materials in the two stirring tanks to the corresponding two crushing tanks respectively; Step S3, the crushing tank crushes the materials, and during the crushing process, the powder particles enter the mixing tank through the filter screen in the tank under the action of the positive pressure in the crushing tank; Step S4, stirring the two kinds of powder particles in the mixing tank to obtain the double-phase change material. The manufacturing process of the granular solid double-phase change point phase change material provided by the present invention has a simple manufacturing process and low cost, and can solve the problems of high manufacturing cost and complex process.

[0029] Regarding "Step S1, preparing the materials c and d to be crushed in two stirring tanks respectively", it specifically includes the following: adding the main phase change material A solution and the additive a particles into the stirring tank A1, and adding the main phase change material B solution and the additive a particles into the stirring tank B2; controlling the temperature and rotation speed of the stirring tank A1 and the stirring tank B2, and after stirring for a set time, the material c is formed in the stirring tank A1, and the material d is formed in the stirring tank B2.

[0030] Regarding the main phase change material A solution, the additive a particles, and the main phase change material B solution, the main phase change material A can be selected as C17H34, the main phase change material B can be selected as C20H42, and the a particles can be selected as Kraton D1119PT of the United States. In the stirring tank A1, the mass ratio of the main phase change material A solution is 85%, and the mass ratio of the additive a particles is 15%; in the stirring tank B2, the mass ratio of the main phase change material B solution is 85%, and the mass ratio of the additive a particles is 15%.

[0031] Regarding mixing tanks A1 and A2, the same tank structure can be adopted for both. When preparing the materials c and d to be crushed, the main phase change material A and additive a particles are respectively added into mixing tank A1 through the feeding port, and the main phase change material B and additive b particles are respectively added into mixing tank B2 through the feeding port. The temperatures of mixing tanks A1 and A2 can be controlled at about 45°C, the rotation speed at 75 revolutions per minute, and the mixing time for about 60 minutes.

[0032] Regarding "Step S2: Transfer the materials in the two mixing tanks to the corresponding two crushing tanks respectively", it includes the following content: Open the upper valve bodies at the bottoms of mixing tank A1 and mixing tank B2, so that the material c in mixing tank A1 falls into crushing tank A3, and the material d in mixing tank B2 falls into crushing tank B4.

[0033] It can be controlled by an automatic program. After the set mixing time of mixing tanks A1 and B2, control the openings of the bottoms of mixing tanks A1 and B2, so that the material c in mixing tank A1 falls into crushing tank A3, and the material d in mixing tank B2 falls into crushing tank B4.

[0034] Regarding "Step S3: The crushing tank crushes the materials. During the crushing process, the powder particles enter the mixing tank through the filter screen in the tank under the action of the positive pressure in the crushing tank", it includes the following content: Keep the inside of the crushing tank under positive pressure through a blower; Connect to a refrigeration system to keep the temperature in the crushing tank within the controlled temperature range; Control the low-speed mixing of the crushing tank for a preset time to complete the cooling of the materials in the two crushing tanks; After the cooling is completed, the crushing tank rotates at a high speed to crush the cooled materials.

[0035] That is, for the materials entering the crushing tank, first the materials are cooled. After the set cooling time, the crushing tank rotates at a high speed to crush the cooled materials.

[0036] After the material c in mixing tank A1 falls into crushing tank A3, the high-pressure blower A7 is in operation to ensure that the pressure inside the tank in crushing tank A3 is a positive pressure value. See Figure 2 , which shows the blower A7 connected to crushing tank A3. The positive pressure value inside the crushing tank is between 18 kPa and 22 kPa, preferably controlled at 20 KPa. Mixing tank A1 is connected to a refrigeration system to make the materials inside the crushing tank in a frozen state. After the material c in mixing tank A1 falls into crushing tank A3, the rotation speed of crushing tank A3 can be controlled to operate at a low speed first for material cooling. The rotation speed of crushing tank A3 can be controlled to mix and freeze at a speed of 75 revolutions per minute for 20 minutes. After mixing and freezing for 20 minutes, start the high-speed mode for crushing.

[0037] After the material d in mixing tank B2 falls into crushing tank B4, the high-pressure blower B8 is in operation to ensure that the pressure inside the tank in crushing tank B4 is a positive pressure value. See Figure 2, a blower B8 connected to the pulverizing tank B4 is shown. The positive pressure value inside the pulverizing tank is between 18 kPa and 22 kPa, preferably controlled at 20 KPa. The stirring tank B2 is connected to a refrigeration system, so that the materials inside the pulverizing tank are in a frozen state. After the material c in the stirring tank B2 falls into the pulverizing tank B4, the pulverizing tank B4 can be controlled to operate at a low speed first for material cooling. The rotation speed of the pulverizing tank A3 can be controlled to stir and freeze at a speed of 75 revolutions per minute for 20 minutes. After stirring and freezing for 20 minutes, the high-speed mode is started for pulverization.

[0038] In step S3, the powder particles enter the mixing tank through the filter screen inside the tank under the action of the positive pressure inside the pulverizing tank. That is, a filter screen is provided in the connection channel between the pulverizing tank A3 and the mixing tank 5, and a filter screen is provided in the connection channel between the pulverizing tank B4 and the mixing tank 5. The filter accuracy of the filter screen is preferably 50 mesh. The powder that meets the particle diameter requirements inside the pulverizing tank A3 can enter the mixing tank through the filter screen between the pulverizing tank A3 and the mixing tank 5 under the action of positive pressure, and the powder that meets the particle diameter requirements inside the pulverizing tank B4 can enter the mixing tank through the filter screen between the pulverizing tank B4 and the mixing tank 5 under the action of positive pressure. The diameter range of the powder particles entering the mixing tank from the pulverizing tank is controlled to be 0.1 mm to 0.2 mm through the filter screen.

[0039] Regarding "Step S4, stirring the two kinds of powder particles in the mixing tank to obtain a dual-phase change material", the specific description is as follows: The main purpose of the mixing tank is to uniformly mix the two kinds of powders. The mixing tank 5 can be controlled to stir at a speed of 75 revolutions per minute for 20 minutes to obtain a granular solid dual-phase change point phase change material.

[0040] See Figure 2 , a device for implementing the process of manufacturing the granular dual-phase change material, including a stirring tank A1, a stirring tank B2, a pulverizing tank A3, a pulverizing tank B4, and a mixing tank 5. Among them, the stirring tank A1 is arranged above the pulverizing tank A3, the stirring tank A1 is connected to the pulverizing tank A3 and a valve body is arranged between the two; the stirring tank B2 is arranged above the pulverizing tank B4, the stirring tank B2 is connected to the pulverizing tank B4 and a valve body is arranged between the two; both the pulverizing tank A2 and the pulverizing tank B4 are connected to the mixing tank 5, and a filter screen is arranged between the pulverizing tank A2 and the mixing tank 5 and between the pulverizing tank B4 and the mixing tank 5; both the pulverizing tank A2 and the pulverizing tank B4 are connected with blowers, and a refrigeration system is connected to both the pulverizing tank A2 and the pulverizing tank B4. The particles inside the pulverizing tank A2 can enter the mixing tank 5 through the filter screen under the action of the wind pressure, and the particles inside the pulverizing tank B4 can enter the mixing tank 5 through the filter screen under the action of the wind pressure.

[0041] See Figure 2, it shows that the mixing tank A1 and the mixing tank B2 are supported on the floor slab 6 of the third floor. The mixing tank A1 and the mixing tank B2 are supported on the floor slab 6 of the second floor. The mixing tank 5 is supported on the floor slab 6 of the first floor. The air blower A7 and the air blower B8 are shown on the floor slab 6 of the first floor at the same time. The air blower A7 is connected to the crushing tank A2 through a pipeline, and the air blower B8 is connected to the crushing tank B4 through a pipeline. The air blower A7 and the air blower B8 are used to maintain the positive pressure in the crushing tanks A3 and A4.

[0042] Regarding the refrigeration system, no more details will be given here, and the existing refrigeration devices in the prior art can be adopted. The crushing tank A2 is connected to the mixing tank 5 through a pipeline, and a filter screen is arranged in the connecting pipeline. The crushing tank B4 is connected to the mixing tank 5 through a pipeline, and a filter screen is arranged in the connecting pipeline.

[0043] A dual-phase change material is made by a process of making granular dual-phase change materials. The granular dual-phase change material has a wide range of applications and is more conducive to meeting the needs of customers.

[0044] A phase change product filled with the dual-phase change material. For example, the phase change product can be a neck warmer, and the neck warmer is filled with granular solid dual-phase change point phase change materials. The phase change points of the two materials can be 28°C and 45°C respectively, so that the neck warmer can be used in winter and summer.

[0045] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A process for manufacturing granular dual-phase change materials, characterized in that, It includes the following contents: Step S1: Prepare materials c and d to be pulverized in two stirring tanks respectively; Step S2: Transfer the materials in the two stirring tanks to the corresponding two pulverizing tanks respectively; Step S3: The pulverizing tank pulverizes the materials. During the pulverizing process, the powder particles enter the mixing tank through the filter screen in the tank under the action of the positive pressure in the pulverizing tank; Step S4: Stir the two kinds of powder particles in the mixing tank to obtain a double-phase change material; In the said Step S1, it includes the following contents: Add the main phase change material A solution and additive a particles into Stirring Tank A, and add the main phase change material B solution and additive a particles into Stirring Tank B; Control the temperature and rotation speed of Stirring Tank A and Stirring Tank B. After stirring for a set time, material c is formed in Stirring Tank A and material d is formed in Stirring Tank B; In the said Step S3, Keep the inside of the pulverizing tank in a positive pressure state through a blower; Connect to a refrigeration system to keep the temperature in the pulverizing tank within the controlled temperature range; Control the pulverizing tank to stir at a low speed for a preset time to complete the cooling of the materials in the two pulverizing tanks; After the cooling is completed, the pulverizing tank rotates at a high speed to pulverize the cooled materials.

2. The process for manufacturing the granular dual-phase change material according to claim 1, characterized in that, In the said Step S2, it includes the following contents: Open the valve bodies on Stirring Tank A and Stirring Tank B, so that material c in Stirring Tank A falls into Pulverizing Tank A, and material d in Stirring Tank B falls into Pulverizing Tank B; In Stirring Tank A, the mass ratio of the main phase change material A solution is 85% and the mass ratio of additive a particles is 15%; In Stirring Tank B, the mass ratio of the main phase change material B solution is 85% and the mass ratio of additive a particles is 15%.

3. The process for manufacturing the granular dual-phase change material according to claim 1, characterized in that, The positive pressure value in the pulverizing tank is between 18 kPa and 22 kPa.

4. The process for manufacturing the granular dual-phase change material according to claim 1, characterized in that, When the materials are cooled, the materials in the pulverizing tank are in a frozen state.

5. The process for manufacturing the granular dual-phase change material according to claim 1, characterized in that, The diameter range of the powder particles entering the mixing tank from the pulverizing tank is 0.1 mm to 0.2 mm.

6. A dual-phase change material, characterized in that, The double-phase change material is made by the process of making the granular double-phase change material described in any one of claims 1-5.

7. A phase change product, characterized in that, The phase change product is filled with the double-phase change material described in claim 6.

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