Water absorption structure applied to vacuumizing refrigeration module and vacuumizing refrigeration module

Abstract

The water absorption structure applied to the vacuum-pumping refrigeration module and the vacuum-pumping refrigeration module are characterized in that the water absorption structure applied to the vacuum-pumping refrigeration module comprises a waterproof breathable bag and anhydrous calcium chloride particles, the anhydrous calcium chloride particles are contained in the waterproof breathable bag, and the anhydrous calcium chloride particles are used for adsorbing vaporized water vapor; the anhydrous calcium chloride particles are formed by mixing particles with different sizes, the particle size range of the particles is 1-4mm, and gaps among the particles form circulation channels with different sizes. By controlling the particle size of the particles, the width of the water vapor channel is increased, the phenomenon that water vapor cannot flow to the inner layer due to the fact that the water vapor channel is blocked due to the fact that the outer-layer anhydrous calcium chloride particles are agglomerated after playing an adsorption role is reduced, and the utilization rate of the anhydrous calcium chloride particles is improved; and it is ensured that the vacuumizing refrigeration module can achieve the continuous refrigeration effect. Meanwhile, the anhydrous calcium chloride particles are adopted, so that the adsorption rate is high, and the method is economical and practical and meets the use requirements of cold-chain transportation products.

Description

Technical Field

[0001] The utility model relates to the technical field of water absorption structures, in particular to a water absorption structure applied to a vacuum refrigeration module and a vacuum refrigeration module. Background Art

[0002] At present, water absorption structure technology is widely used in various industries, especially in the water absorption structure of vacuum refrigeration modules. In traditional water absorption structures, the water absorbent affects the released cooling liquid, and the water absorbents are prone to agglomeration or blockage after adsorption, resulting in poor adsorption effect and affecting the refrigeration effect of the vacuum refrigeration module. At the same time, there are problems such as slow adsorption rate and high adsorbent price. Therefore, there is an urgent need for a water absorption structure with fast adsorption speed, economical and high adsorbent utilization rate to meet the demand for water vapor after adsorption of liquid vaporization in vacuum refrigeration modules. Utility Model Content

[0003] In response to the problems raised by the background technology, the purpose of the utility model is to propose a water absorption structure and a vacuum refrigeration module applied to a vacuum refrigeration module, which solves the problems that the existing water absorption structure has a slow adsorption speed, a high price, a low utilization rate, and directly absorbs the cooling liquid, resulting in a poor refrigeration effect of the vacuum refrigeration module.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A water absorption structure applied to a vacuum refrigeration module, comprising a waterproof breathable bag and anhydrous calcium chloride particles, wherein the anhydrous calcium chloride particles are contained in the waterproof breathable bag and are used to absorb vaporized water vapor;

[0006] The anhydrous calcium chloride particles are a mixture of particles of different sizes, the particle size of the particles ranges from 1 to 4 mm, and the gaps between the particles form flow channels with gaps of different sizes.

[0007] Preferably, among the particles, the ratio of 1 mm particles, 2 mm particles, 3 mm particles and 4 mm particles is 65±5:32±5:2:1.

[0008] Preferably, the anhydrous calcium chloride particles are spherical calcium chloride particles, and the spherical calcium chloride particles are thorny spherical anhydrous calcium chloride particles with uneven surfaces, or are light spherical anhydrous calcium chloride particles with smooth surfaces.

[0009] Preferably, the waterproof and breathable bag is a non-woven bag for air permeability and water blocking; a fitting portion is provided on the bag edge of the non-woven bag, and the fitting portion is used to seal the non-woven bag.

[0010] Preferably, the width of the bonding portion is ≥3 mm, and the bonding portion can withstand a tensile force of >15±2N.

[0011] Preferably, the non-woven bag has a gram weight of 50 g / m 2 The longitudinal strength is 50N / 5cm, the transverse strength is 30N / 5cm, the tear strength is >15N, and the air permeability is 1000Cc / m 2 / sec.

[0012] Preferably, the waterproof breathable bag is divided into at least two independent units, the two units are separated by a partition, and each unit contains the anhydrous calcium chloride particles.

[0013] Correspondingly, the utility model provides a vacuum refrigeration module, including the water absorption structure applied to the vacuum refrigeration module.

[0014] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0015] The utility model contains anhydrous calcium chloride particles in the waterproof breathable bag, so that the cooling liquid released in the vacuum refrigeration module cannot pass through the waterproof breathable bag and be directly adsorbed by the anhydrous calcium chloride particles. By controlling the particle size of the anhydrous calcium chloride particles, the width of the water vapor channel is increased, and the phenomenon that the anhydrous calcium chloride particles in the outer layer agglomerate after the adsorption effect is exerted, thereby blocking the water vapor channel and causing the water vapor to be unable to reach the inner layer is effectively reduced, thereby improving the utilization rate of the anhydrous calcium chloride particles and ensuring that the vacuum refrigeration module can achieve the effect of continuous refrigeration. At the same time, the use of anhydrous calcium chloride particles has a fast adsorption rate and is economical and affordable, which can effectively meet the use requirements of cold chain transportation products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of an embodiment of the utility model;

[0017] Figure 2 It is a side view of an embodiment of the utility model;

[0018] Figure 3 It is a structural schematic diagram of a vacuum refrigeration module in one embodiment of the utility model.

[0019] Among them: waterproof and breathable bag 1; fitting part 11; unit 12; partition part 13; anhydrous calcium chloride particles 2; barrier shell 01; switch part 02; first sealing bag 03; cooling layer 04; water expansion layer 05; water blocking sheet 06; thermal insulation layer 07; absorption layer 08; second sealing bag 09; sealing film 010. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or more of the features.

[0023] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0024] The following is combined with Figures 1 to 3 The technical solution of the utility model is further illustrated by specific implementation methods.

[0025] like Figure 1 As shown, the water absorption structure applied to the vacuum refrigeration module includes a waterproof breathable bag 1 and anhydrous calcium chloride particles 2. The anhydrous calcium chloride particles 2 are contained in the waterproof breathable bag 1, and the anhydrous calcium chloride particles 2 are used to absorb vaporized water vapor;

[0026] The anhydrous calcium chloride particles 2 are a mixture of particles of different sizes, the particle size of the particles ranges from 1 to 4 mm, and the gaps between the particles form flow channels with different gap sizes.

[0027] In the vacuum refrigeration module, the purpose of refrigeration is achieved by liquid vaporization, but liquid vaporization will increase the relative pressure inside, which is not conducive to continuous refrigeration. Therefore, in order to effectively absorb the water vapor after the liquid vaporization, avoid water vapor accumulation and affect the process of liquid continuous vaporization heat absorption refrigeration. This scheme proposes a water absorption structure, such as Figure 1 As shown, by using the anhydrous calcium chloride particles 2 wrapped in the waterproof and breathable bag 1 to absorb water vapor, the liquid cannot penetrate into the waterproof and breathable bag 1 and be directly absorbed by the anhydrous calcium chloride particles 2. While the liquid continues to vaporize, the anhydrous calcium chloride particles 2 can promptly absorb the water vapor generated after vaporization, and the adsorption rate is fast, ensuring that the vacuum refrigeration module can achieve a continuous refrigeration effect. It is economical and affordable, and can effectively meet the use requirements of cold chain transportation products.

[0028] Specifically, since the anhydrous calcium chloride particles 2 have extremely strong water absorption, after absorbing a large amount of water vapor, they may completely deliquesce, that is, they dissolve in the absorbed water to form a solution, and the solution seepage is not conducive to the realization of the cooling effect, so a waterproof and breathable bag 1 is used to accommodate the anhydrous calcium chloride particles 2, so as to isolate the calcium chloride converted into liquid from seeping out of the waterproof and breathable bag 1, and to prevent the unvaporized liquid in the vacuum refrigeration module from being directly absorbed by the anhydrous calcium chloride particles 2. The adsorption heat generated by the anhydrous calcium chloride particles 2 can heat the liquid, so that the liquid reaches the boiling point faster and thus increases the vaporization rate. In addition, the anhydrous calcium chloride particles 2 are mixed by particles of different sizes, the particle size range of the particles is 1 to 4 mm, and there are gaps between a number of anhydrous calcium chloride particles 2, forming a circulation channel with gaps of different sizes. The anhydrous calcium chloride particles 2 are mixed with particles of different particle sizes. The difference in particle sizes increases the width of the flow channel, which is used to circulate water vapor, effectively reducing the phenomenon that the anhydrous calcium chloride particles 2 in the outer layer agglomerate after playing an adsorption role, thereby blocking the water vapor channel and causing water vapor to be unable to pass to the inner layer, thereby improving the utilization rate of the anhydrous calcium chloride particles 2 and ensuring that the anhydrous calcium chloride particles 2 in the inner layer can fully play the function of adsorbing water vapor.

[0029] Preferably, among the particles, the ratio of 1 mm particles, 2 mm particles, 3 mm particles and 4 mm particles is 65±5:32±5:2:1.

[0030] It should be noted that if only anhydrous calcium chloride particles 2 with larger particles (above 4 mm in diameter) are used, although the need to increase the porosity is met, the volume increases under the condition of equal mass, which is not conducive to structural design. Therefore, in order to increase the vaporization channel, anhydrous calcium chloride particles 2 with a mixed particle size of 1-4 mm are selected. Preferably, among the particles, the proportion of 1 mm particles, 2 mm particles, 3 mm particles and 4 mm particles is 65±5:32±5:2:1. By increasing the particle size, the vaporization channel is increased, but the volume of the water absorption structure is not affected, so that the anhydrous calcium chloride particles 2 in the inner and outer layers can fully play their role to meet the adsorption effect and meet the requirements of structural design.

[0031] Preferably, the anhydrous calcium chloride particles 2 are spherical calcium chloride particles, and the spherical calcium chloride particles are thorny spherical anhydrous calcium chloride particles with uneven surfaces, or are light spherical anhydrous calcium chloride particles with smooth surfaces.

[0032] Specifically, the anhydrous calcium chloride particles 2 are spherical calcium chloride particles. When the spherical calcium chloride particles increase the vaporization contact area, the gaps between several spherical calcium chloride particles can form multiple groups of channels for adsorbing water vapor, which is conducive to the passage of water vapor to the inner layer and adsorbed by the spherical calcium chloride particles in the inner layer. The spherical calcium chloride particles can be thorny spherical anhydrous calcium chloride particles with uneven surfaces, or light spherical anhydrous calcium chloride particles with smooth surfaces. The light spherical anhydrous calcium chloride particles have a faster adsorption rate than the thorny spherical anhydrous calcium chloride particles, but due to the irregularity of the shape of the thorny spherical anhydrous calcium chloride particles, the surface is uneven, with a larger surface area, and the gaps between the particles are relatively large, which can provide more adsorption sites, thereby increasing the adsorption area and adsorption effect. Therefore, the thorny spherical anhydrous calcium chloride particles are preferred in the present technical solution.

[0033] Preferably, the waterproof breathable bag 1 is a non-woven bag for air permeability and water blocking; a fitting portion 11 is provided at the bag edge of the non-woven bag, and the fitting portion 11 is used to seal the non-woven bag.

[0034] In the actual production process, a wide variety of components can be realized for the waterproof breathable bag 1, but in this embodiment, the following embodiments are preferred: Figure 1 and Figure 2 As shown, the waterproof breathable bag 1 is a non-woven bag for air permeability and water blocking. The unvaporized liquid is blocked by the non-woven bag, while the vaporized liquid is converted into water vapor, which can be adsorbed by the anhydrous calcium chloride particles 2 through the non-woven bag. The edge of the non-woven bag is provided with a bonding portion 11, which is used to heat-seal the non-woven bag so that the non-woven bag remains sealed.

[0035] Preferably, the width of the bonding portion 11 is ≥3 mm, and the bonding portion 11 can withstand a tensile force of >15±2N.

[0036] Specifically, the heat-sealed width of the joint 11 is ≥3 mm, which effectively prevents leakage and contamination of the anhydrous calcium chloride particles 2 in the bag, improves the sealing performance, and prevents the penetration of water and moisture. After heat sealing, the sealing mouth of the non-woven bag can withstand a tensile force of more than 15±2N, increases the strength and durability of the non-woven bag, and reduces wear during transportation and use.

[0037] Preferably, the non-woven bag has a gram weight of 50 g / m 2 The longitudinal strength is 50N / 5cm, the transverse strength is 30N / 5cm, and the air permeability is 1000Cc / m 2 / sec, tear strength>15N.

[0038] Specifically, the weight of the non-woven bag is 50g / m 2 The longitudinal strength is 50N / 5cm, the transverse strength is 30N / 5cm, and the tear strength is >15N. It can effectively withstand the tensile force, thus ensuring that it is not easily damaged during use and extending its service life; the air permeability is 1000Cc / m 2 / sec, in the vacuum refrigeration module, the water vapor after the liquid is vaporized can effectively pass through the non-woven bag and then be absorbed.

[0039] Preferably, the waterproof breathable bag 1 is divided into at least two independent units 12 , the two units 12 are separated by a partition 13 , and each unit contains the anhydrous calcium chloride particles 2 .

[0040] Specifically, the waterproof breathable bag 1 is provided with at least two independent units, which effectively prevents the anhydrous calcium chloride particles 2 from agglomerating or clogging in the bag, maintains the uniform distribution of the anhydrous calcium chloride particles 2, and improves the adsorption efficiency and performance stability. The two units 12 are separated by a partition 13, and the partition 13 is used for heat sealing to form independent adsorption units 12, thereby improving the feasibility and practicality of the anhydrous calcium chloride particles 2 adsorbing water vapor.

[0041] It should be noted that the utility model also provides a vacuum refrigeration module, including a barrier shell 01, a switch part 02, a first sealing bag 03, a cooling layer 04, a water expansion layer 05, a water blocking sheet 06, a heat preservation layer 07, an absorption layer 08, a second sealing bag 09 and a sealing film 010;

[0042] Specifically, Figure 3As shown, in the barrier shell 01, the switch part 02, the first sealing bag 03, the cooling layer 04, the water expansion layer 05, the water blocking sheet 06, the heat-insulating layer 07, the absorption layer 08 and the second sealing bag 09 are stacked in sequence, and the bottom opening of the barrier shell 01 is covered and sealed by the sealing film 010. After the vacuum refrigeration module is evacuated and compressed into a vacuum state, a vacuum sealed cavity is formed in the barrier shell 01. When the switch part 02 is pressed, the first sealing bag 03 and the cooling layer 04 are punctured, and the liquid to be vaporized overflows. Under the vacuum state, the boiling point of the liquid becomes lower and it is easy to boil. After boiling, it vaporizes and absorbs heat to cool. The top of the barrier shell 01 releases cold energy to cool the product to be cooled. Among them, the cooling layer 04 is used to conduct the cooling temperature of the liquid in the first sealing bag 03 after vaporization, the water expansion layer 05 is used to accelerate the diffusion area and speed of the liquid, the water blocking sheet 06 is used to block the liquid to prevent over-seepage, the thermal insulation layer 07 is used to maintain the cooling temperature, and the absorption layer 08 is used to absorb the steam after the liquid vaporizes.

[0043] Specifically, the water absorption structure applied to the vacuum refrigeration module is the absorption layer 08, which is between the insulation layer 07 and the second sealing bag 09, and absorbs the water vapor after the liquid is vaporized to avoid water vapor accumulation and affect the refrigeration effect. The adsorption heat generated by the anhydrous calcium chloride particles 2 heats the liquid in the second sealing bag 09, so that the liquid reaches the boiling point faster and thus increases the vaporization rate. At the same time, the adsorption heat is isolated by the insulation layer 07 to achieve the cooling of the upper area of ​​the vacuum refrigeration module, that is, the space where the product to be cooled is located receives cold energy, and the lower area of ​​the vacuum refrigeration module interacts with the external environment to achieve the effect of heat dissipation.

[0044] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A water absorption structure used in a vacuum refrigeration module, characterized in that: It comprises a waterproof breathable bag and anhydrous calcium chloride particles, wherein the anhydrous calcium chloride particles are contained in the waterproof breathable bag and are used to absorb vaporized water vapor; The anhydrous calcium chloride particles are a mixture of particles of different sizes, the particle size of the particles ranges from 1 to 4 mm, and the gaps between the particles form flow channels with gaps of different sizes.

2. The water absorption structure for vacuum refrigeration module according to claim 1, characterized in that: Among the particles, the ratio of 1 mm particles, 2 mm particles, 3 mm particles and 4 mm particles is 65±5:32±5:2:

1.

3. The water absorption structure for vacuum refrigeration module according to claim 1, characterized in that: The anhydrous calcium chloride particles are spherical calcium chloride particles, and the spherical calcium chloride particles are thorny spherical anhydrous calcium chloride particles with uneven surfaces, or are light spherical anhydrous calcium chloride particles with smooth surfaces.

4. The water absorption structure for vacuum refrigeration module according to claim 1, characterized in that: The waterproof and breathable bag is a non-woven bag for air permeability and water blocking; a fitting portion is provided on the bag edge of the non-woven bag, and the fitting portion is used to seal the non-woven bag.

5. The water absorption structure for vacuum refrigeration module according to claim 4, characterized in that: The width of the bonding part is ≥3mm, and the bonding part can withstand a tensile force of >15±2N.

6. The water absorption structure for use in a vacuum refrigeration module according to claim 4, characterized in that: The non-woven bag has a gram weight of 50 g / m 2 The longitudinal strength is 50N / 5cm, the transverse strength is 30N / 5cm, the tear strength is >15N, and the air permeability is 1000Cc / m 2 / sec.

7. The water absorption structure for use in a vacuum refrigeration module according to claim 1, characterized in that: The waterproof and breathable bag is divided into at least two independent units, the two units are separated by a partition, and each unit contains the anhydrous calcium chloride particles.

8. A vacuum refrigeration module, characterized in that: The invention comprises a water absorption structure applied to a vacuum refrigeration module as described in any one of claims 1 to 7.

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