Self-packaging phase change cold storage ball for cold storage of air conditioner

Abstract

The utility model discloses a self-packaging phase change cold storage ball for air conditioner cold storage, which comprises a packaging shaping part and a cold storage core part, the packaging shaping part is made of thermoplastic resin, and the cold storage core part comprises a phase change cold storage material and a shaping support body capable of bearing the phase change cold storage material. The shaped support body is super absorbent resin particles, and the super absorbent resin particles adsorb a liquid phase change cold storage material to form super absorbent resin-based phase change cold storage material particles; the water-absorbent resin-based phase change cold storage material particles and the thermoplastic resin are kneaded and poured at a certain process temperature and pressure to form a spherical structure. By means of the mode, the self-packaging phase change cold storage ball for air conditioner cold storage is of a cold storage structure which is large in energy density and small in size, is easy to machine and form, has a good packaging effect, overcomes the defect that the ice ball is large in cold storage and heat exchange temperature difference, can store more cooling capacity in the small size, and ensures enough cold storage capacity.

Description

Technical Field

[0001] This utility model relates to the field of phase change cold storage technology, and in particular to a self-encapsulated phase change cold storage ball for air conditioning cold storage. Background Technology

[0002] Air conditioning cold storage technology is the technology that stores the cooling capacity generated during off-peak hours and releases it to users during peak hours. This can balance the load, save operating costs, and optimize the energy structure.

[0003] Currently, the most commonly used air conditioning cold storage technologies are water cold storage and ice cold storage, but each method has its limitations. Water cold storage uses the sensible heat of water for cold storage, but the sensible heat of water is relatively small, so the cold storage device needs to be huge and the cold loss is large. Ice cold storage mainly uses the latent heat of ice at around 0°C for cold storage, which requires the air conditioning unit to have a low evaporation temperature when storing cold, and the cooling performance and cooling capacity of the air conditioning unit are greatly reduced compared with conventional units.

[0004] Phase change energy storage primarily utilizes the latent heat of phase change for energy storage and release. Compared to water and ice energy storage, it offers advantages such as high energy storage density and high energy efficiency ratio. However, current phase change energy storage materials also have some drawbacks, such as liquid leakage, corrosion, and environmental contact degradation. Furthermore, phase change energy storage equipment has a complex heat exchange structure and a large temperature difference, which limits its widespread application in practice.

[0005] Therefore, how to effectively encapsulate phase change materials and optimize the structure of phase change cold storage devices have become urgent problems to be solved in the development of phase change cold storage technology. Utility Model Content

[0006] The main technical problem solved by this utility model is to provide a self-encapsulated phase change cold storage ball for air conditioning cold storage, including a cold storage structure with high energy density and small volume, which is easy to process and mold, and has a good encapsulation effect, thus solving the encapsulation problem of phase change energy storage materials; thermoplastic resin is used as the encapsulation and shaping shell, which can improve heat exchange efficiency and overcome the disadvantage of large temperature difference in cold storage heat exchange; it can store more cold energy in a small volume, ensuring sufficient cold storage capacity.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing a self-encapsulated phase change cold storage ball for air conditioning cold storage, comprising:

[0008] The encapsulation and shaping part is made of thermoplastic resin;

[0009] The cold storage core includes a phase change cold storage material and a shaped support that can support the phase change cold storage material. The shaped support is a super absorbent resin particle, which adsorbs the liquid phase change cold storage material to form water-absorbing resin-based phase change cold storage material particles.

[0010] The water-absorbing resin-based phase change cold storage material particles are kneaded and cast with thermoplastic resin to form a spherical structure.

[0011] In a preferred embodiment of this invention, the cold storage core is partially dispersed in a continuous thermoplastic resin.

[0012] In a preferred embodiment of this utility model, the diameter of the spherical structure ranges from 10 to 30 mm.

[0013] In a preferred embodiment of this invention, the surface of the spherical structure may be provided with a structure to enhance the heat exchange surface area.

[0014] In a preferred embodiment of the present invention, the structure for enhancing the heat exchange surface area includes protrusions or reinforcing ribs uniformly distributed on the surface of the spherical structure.

[0015] In a preferred embodiment of the present invention, the phase change cold storage material is filled in a superabsorbent resin to form an irregular polygonal cold storage core.

[0016] The beneficial effects of this invention are as follows: Superabsorbent resin is used as the support structure for the low-temperature eutectic salt phase change cold storage material. Superabsorbent resin is a functional polymer material with a large number of hydrophilic groups, making it difficult to separate the low-temperature eutectic salt phase change cold storage material under pressure, thus achieving a kneading process with molten thermoplastic resin. Using thermoplastic resin as the shell encapsulation and shaping material has a much better encapsulation effect than using inorganic or thermosetting resins as the shell, significantly reducing or eliminating the leakage rate of the low-temperature eutectic salt phase change cold storage material. Using thermoplastic resin as the encapsulation and shaping material significantly reduces the amount of encapsulation and shaping material needed due to its good film-forming properties. Combined with the high liquid absorption rate of superabsorbent resin, the content of low-temperature eutectic salt phase change cold storage material per unit volume is greatly increased, resulting in a significant increase in phase change cold storage capacity. By encapsulating and shaping the low-temperature eutectic salt phase change cold storage material with superabsorbent resin-based thermoplastic resin into small-diameter spheres, the heat exchange specific surface area is greatly increased, overcoming the disadvantage of large temperature differences in ice ball cold storage. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0018] Figure 1 This is a schematic diagram of a preferred embodiment of the self-encapsulated phase change cold storage ball for air conditioning cold storage according to this utility model;

[0019] Figure 2 This is a schematic diagram of a preferred embodiment of the cold storage core of this utility model;

[0020] The components in the attached diagram are labeled as follows:

[0021] 11. Cold storage core component; 12. Encapsulation and shaping component; 111. Shaping support body; 112. Phase change cold storage material. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] Please see Figures 1 to 2 ,

[0025] This embodiment discloses a self-encapsulated phase change cold storage ball for air conditioning cold storage, which can be applied to air conditioning cold storage, including an encapsulation shaping part 12 and a cold storage core part 11 filled inside the encapsulation shaping part 12.

[0026] Specifically, the first part is the encapsulation and shaping part 12, which uses thermoplastic resin as the shell encapsulation and shaping material. The main materials are one or more of LLDPE, LDPE, HDPE, POE or EVA.

[0027] Using thermoplastic resin as the shell encapsulation material has a much better encapsulation effect than using inorganic and thermosetting resins as the shell, and the leakage rate of low-temperature eutectic salt phase change cold storage material is greatly reduced.

[0028] Secondly, there is the cold storage core part 11, which includes a phase change cold storage material 112 and a shaped support 111 capable of supporting the phase change cold storage material 112. The shaped support 111 is made of superabsorbent resin particles. The superabsorbent resin particles adsorb the liquid phase change cold storage material 112 to form water-absorbing resin-based phase change cold storage material particles. The main function of the water-absorbing resin is to act as a carrier or container. After absorbing the liquid phase change material, it exists in a solid form. Subsequently, when the phase change material existing inside the water-absorbing resin undergoes a phase change, regardless of the form of the phase change material, it will appear to be in a solid form, forming water-absorbing resin-based phase change material particles.

[0029] In this embodiment, water-absorbing resin-based phase change cold storage material particles are embedded as a dispersed phase in a continuous phase of thermoplastic resin. The water-absorbing resin-based phase change cold storage material particles serve as the core and play a role in phase change cold storage. The thermoplastic resin serves as the shell and plays a role in encapsulation, bonding and shaping. That is, the gaps between the water-absorbing resin-based phase change cold storage material microparticles are filled with the continuous phase of thermoplastic resin, forming a self-encapsulating structure.

[0030] That is, the water-absorbing resin-based phase change cold storage material particles are kneaded with thermoplastic resin to form a spherical structure. The specific preparation process is as follows:

[0031] Superabsorbent resin is used as a shaping support, and the pre-made low-temperature eutectic salt phase change cold storage material is fully absorbed by superabsorbent resin particles to form water-absorbent resin-based low-temperature eutectic salt phase change cold storage material particles.

[0032] Then, under certain temperature and pressure, it is kneaded with thermoplastic resin in a kneader to form a highly viscous polymer.

[0033] The mixture is then further mixed by a twin-screw forced feeder, forcefully injected into the mold for injection molding, and cooled to obtain a spherical water-absorbing resin-based thermoplastic resin encapsulated and shaped low-temperature eutectic salt phase change cold storage material.

[0034] The main formulation of the low-temperature eutectic salt phase change material is: Na2SO4·10H2O, Na2HPO4·12H2O, NH4Cl and borax; its phase change temperature is 7℃~9℃; its latent heat of phase change is 130kj / kg~145kj / kg, and its supercooling is ≤1.5℃.

[0035] Furthermore, the spherical structure surface in this embodiment may be provided with a structure that enhances the heat exchange surface area.

[0036] Preferably, the structure that enhances the heat exchange surface area includes protrusions or reinforcing ribs uniformly distributed on the surface of the spherical structure, increasing the surface area for heat exchange and improving heat exchange efficiency. In practical applications, a single reinforcing structure can be used, or multiple structures can be combined.

[0037] In this embodiment, the diameter of the spherical structure is 10~30mm. This size range is convenient for installation and transportation, and can store more cold energy in a smaller volume, ensuring sufficient cold storage capacity.

[0038] The beneficial effects of this invention, a self-encapsulated phase change cold storage ball for air conditioning cold storage, are:

[0039] Thermoplastic resins have good thermoplasticity and fluidity, and can be easily molded into cold storage balls of various shapes and sizes through injection molding, extrusion and other processes. They are easy to process and have good encapsulation effect, which solves the encapsulation problem of phase change energy storage materials.

[0040] Thermoplastic resin, as the encapsulation and shaping part, can uniformly transfer heat, so that the cold storage ball has a smaller heat exchange temperature difference during the cold storage and release process, which improves the heat exchange efficiency and overcomes the disadvantage of large heat exchange temperature difference in ice ball cold storage.

[0041] It can form a cold storage structure with high energy density and small volume, storing more cold energy in a smaller volume and ensuring sufficient cold storage capacity.

[0042] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A self-packaged phase change cold storage ball for air conditioning cold storage, characterized in that, Comprise: An encapsulation and shaping part, which is a thermoplastic resin; A cold storage core part, which comprises a phase change cold storage material and a shaping support capable of bearing the phase change cold storage material, the shaping support being super absorbent resin particles, the super absorbent resin particles adsorbing liquid phase change cold storage material to form super absorbent resin-based phase change cold storage material particles; The super absorbent resin-based phase change cold storage material particles are kneaded and cast with the thermoplastic resin to form a spherical structure, the diameter of the spherical structure ranges from 10 to 30 mm, and the surface of the spherical structure can be provided with a structure for enhancing the heat exchange surface area, the structure for enhancing the heat exchange surface area comprising protrusions or reinforcing ribs uniformly distributed on the surface of the spherical structure.

2. The self-packaged phase change ball for air conditioning cold storage according to claim 1, wherein, The cold storage core part is dispersedly arranged in the continuous thermoplastic resin.

3. The self-encapsulated phase change cold storage ball for air conditioning cold storage according to claim 1, characterized in that, The phase change cold storage material is filled in the super absorbent resin to form an irregular polygonal cold storage core.

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