CN212378304U - Refrigerating box - Google Patents

Abstract

The utility model discloses a refrigerator, which comprises a refrigerator body and an adsorption part, wherein the outer side of the refrigerator body is respectively provided with a first cavity wall, the outer side of the first cavity wall is relatively provided with a second cavity wall, the space between the first cavity wall and the second cavity wall is an evaporation cavity, and one side of the first cavity wall, which faces the evaporation cavity, is provided with a water absorption material for adsorbing a refrigerant; the adsorption part is provided with an adsorption cavity which is communicated with the evaporation cavity through a heat exchange pipeline, the heat exchange pipeline is provided with a valve, and an adsorbent used for adsorbing a refrigerant is arranged in the adsorption cavity. The water absorbing material is arranged on the inner wall, close to the box body, of the evaporation cavity, and when the refrigerant evaporates and refrigerates from the water absorbing material, the refrigerating capacity of the refrigerant transferred to the box body is maximized, the utilization rate of the refrigerating capacity is increased, and the refrigerating effect is improved. The utility model discloses it is rational in infrastructure, but wide application in cold chain transportation technical field.

Description

Refrigerating box

Technical Field

The utility model relates to a cold chain transportation technical field, in particular to fridge.

Background

According to the knowledge, the total value of the product market needing cold chain service in China is estimated to exceed 3 trillion yuan, and if the cost of the cold chain is calculated according to the most conservative 5%, the scale of the cold chain market exceeds 1500 trillion yuan, which shows that the cold chain market in China has huge demand and development space.

At present, the existing small portable refrigerator and the evaporation cavity thereof generally adopt the following three technologies:

1. compressor refrigeration technology

Compressor refrigeration technology is widely used for stationary applications in which the evaporation chamber is formed as a flat wall chamber/heat exchanger combination. The compressor has poor impact resistance, vibration resistance, inclination resistance and other capacities, can not be used in moving for a long time, needs to be driven by a power supply, is generally installed on a special refrigerated automobile, and has the advantages of large volume, high noise and high cost. Such evaporation chambers are bulky and not suitable for use in other types of refrigeration cases.

2. Semiconductor refrigeration technology

The evaporation cavity adopted by the semiconductor refrigeration technology is mainly provided with a fan and a radiator, the energy efficiency is very poor, the cooling effect is limited, and the P-N junction characteristic is realized, so that when the refrigeration system is in a heat preservation transportation state after power failure, reverse heat transfer can be realized.

3. Ice cold storage technology

The evaporation cavity adopted by the ice cold storage technology is superposed with the cavity of the cargo container, and the flat wall type cavity is mainly used for heat preservation. The technology has the defects of difficult temperature control, consumables, incapability of controlling refrigeration starting and the like, and has poor recycling performance.

These prior art deficiencies have led to innovations in cold chain transport technology, which has made the development of emerging cryogenic transport and distribution equipment and new key components urgent, for example: the passive refrigeration box is used as one of main distribution tools of cold chain logistics, and the overall performance of the passive refrigeration box is greatly influenced by the performance of an adopted evaporation cavity. Most of the existing evaporation cavities are ordinary flat wall-type cavities, the heat exchange area is small, the heat exchange efficiency is poor, the temperature in the box is low, the effective storage space is small, and the average melting time is short, so that the development of cold chain transportation is limited.

SUMMERY OF THE UTILITY MODEL

For at least one among the above-mentioned technical problem of solution, improve cold-stored effect, the utility model provides a fridge, the technical scheme who adopts as follows:

the utility model provides a fridge includes case body and absorption portion, the outside of case body has arranged first cavity wall respectively, relative arrangement has the second cavity wall outside the first cavity wall, the space between first cavity wall and the second cavity wall is the evaporation chamber, first cavity wall towards one side of evaporation chamber arrange the material that absorbs water that is used for adsorbing the refrigerant; the adsorption part is provided with an adsorption cavity, the adsorption cavity is communicated with the evaporation cavity through a heat exchange pipeline, a valve is arranged on the heat exchange pipeline, and an adsorbent used for adsorbing a refrigerant is arranged in the adsorption cavity.

Further, a latticed groove is formed in one side, facing the evaporation cavity, of the first cavity wall, and the water absorbing material is arranged in the latticed groove.

Further, latticed recess includes the bionical leaf vein cell body of a plurality of, bionical leaf vein cell body is including main arteries and veins recess, main arteries and veins recess is followed the bottom of first cavity wall extends to the top, main arteries and veins recess shaping has a plurality of branch arteries and veins recess.

Furthermore, branch vein grooves between two adjacent main vein grooves are correspondingly communicated.

Further, a liquid storage structure is arranged at the bottom of the evaporation cavity.

Further, the bottom of the latticed groove is communicated to the liquid storage structure.

Further, the water absorbing material protrudes out of the latticed groove.

Further, a plurality of support columns are arranged between the first cavity wall and the second cavity wall.

Further, the evaporation cavity is provided with a vacuum-pumping pipeline, and the adsorption cavity is provided with a vacuum-pumping pipeline.

Further, the water-absorbing material is one of glass fiber, flannelette, cashmere and water-absorbing resin.

Has the advantages that: the evaporation chamber is arranged outside the box body, the water absorbing material is arranged on the inner wall, close to the box body, in the evaporation chamber, and when the refrigerant evaporates and refrigerates from the water absorbing material, the refrigerating capacity transmitted to the box body by the refrigerant is maximized, the utilization rate of the refrigerating capacity is increased, and the refrigerating effect is improved. The utility model discloses it is rational in infrastructure, but wide application in cold chain transportation technical field.

Drawings

FIG. 1 is a schematic sectional view of the cooler;

FIG. 2 is an exploded view of the tank body and the evaporation chamber;

figure 3 is a block diagram of the first chamber wall.

Detailed Description

The present invention will be further described with reference to fig. 1 to 3.

The utility model relates to a fridge, it includes case body 15 and adsorption part 13, and adsorption part 13 is located the below of case body 15. The upper part of the box body 15 is open, a cover body is arranged at the open, and the cover body is made of heat insulating materials. The outer sides of the tank body 15 are respectively arranged with first cavity walls 11, for example: the tank body 15 has four side walls, and the number of the first cavity walls 11 is four. The second cavity wall 12 is oppositely arranged outside the first cavity wall 11, the space between the first cavity wall 11 and the second cavity wall 12 is an evaporation cavity, the evaporation cavity is used for generating refrigerating capacity, the evaporation cavity is arranged around the box body 15, and refrigerating and cold insulation effects are good. The adsorption part 13 has an adsorption cavity which is communicated with the evaporation cavity through a heat exchange pipe 14, and the heat exchange pipe 14 is provided with a valve. The side of the first cavity wall 11 facing the evaporation cavity is provided with a water absorption material for absorbing the refrigerant, the absorption cavity is internally provided with an absorbent for absorbing the refrigerant, and the absorbent is one of silica gel, a molecular sieve, hygroscopic salt, activated carbon and composite materials.

In some embodiments, second cavity wall 12 is formed with heat exchange ports 18 for mounting heat exchange tubes 14.

The refrigerating process of the refrigerator is as follows: in the initial state before cooling, refrigerant is already adsorbed in the evaporation chamber. The valve of the heat exchange pipeline 14 is opened, the adsorption cavity is communicated with the evaporation cavity, the air pressure in the evaporation cavity is reduced due to the adsorption effect of the adsorbent in the adsorption cavity, the refrigerant stored in the water absorption material starts to be evaporated and refrigerated in low pressure to generate refrigerating capacity, and the refrigerating capacity enables goods in the box body 15 to be refrigerated through the first cavity wall 11. When refrigeration is not required, the valves of heat exchange tubes 14 are closed, disconnecting the adsorption and evaporation chambers.

The desorption regeneration process of the refrigerating box is as follows: in the initial state before desorption regeneration, the adsorbent in the adsorption cavity is saturated. When in desorption, external heat is input into the adsorption cavity, the temperature of the adsorption cavity and the adsorbent is increased, so that the adsorbent is in a desorption state, and the liquid refrigerant is desorbed from the adsorbent to become the gaseous refrigerant which is in a high-temperature and high-pressure state. Meanwhile, normal-temperature or low-temperature water is injected into the box body 15, so that the temperature of the first cavity wall 11 is reduced, the valve of the heat exchange pipeline 14 is opened, the adsorption cavity is communicated with the evaporation cavity, the gaseous refrigerant circulates to the evaporation cavity from the high-pressure adsorption cavity through the heat exchange pipeline 14 due to pressure difference, and when the high-temperature gaseous refrigerant contacts the low-temperature first cavity wall 11, the gaseous refrigerant is extremely rapidly condensed into the liquid refrigerant due to great temperature difference. After desorption regeneration is completed, the valve of the heat exchange pipeline 14 is closed, so that the adsorption cavity is disconnected from the evaporation cavity.

In some embodiments, the external heat input into the adsorption cavity during desorption can be hot water or hot oil.

In some embodiments, a reservoir structure 16 is disposed at the bottom of the evaporation chamber. In an initial state before cooling, the liquid storage structure 16 stores a refrigerant.

In some embodiments, the bottoms of the grid-like grooves communicate with the reservoir structure 16. During desorption and regeneration, the gaseous refrigerant contacts the first cavity wall 11 and condenses into liquid refrigerant, and then flows downwards to be stored in the liquid storage structure 16.

In some embodiments, the side of the first chamber wall 11 facing the evaporation chamber is formed with a grid-like recess in which the water-absorbing material is arranged. The latticed grooves are distributed on the side face of the first cavity wall 11, the corresponding water absorbing materials are distributed on the side face of the first cavity wall 11, and the water absorbing materials in the latticed grooves can maximize the heat exchange area, so that the box body 15 can be uniformly refrigerated.

In some embodiments, the water absorbent material protrudes from the grid-shaped grooves, and the water absorbent material protrudes from the grid-shaped grooves, so that the adsorption capacity of the water absorbent material is increased. For example, the absorbent material is about 1mm higher.

In some embodiments, the grid-shaped grooves comprise a plurality of bionic leaf vein grooves, the bionic leaf vein grooves comprise main vein grooves, the main vein grooves are formed with a plurality of branch vein grooves, the branch vein grooves extend out of the main vein grooves, and the water absorbing material is embedded into the main vein grooves and the branch vein grooves.

In some embodiments, the main vein groove extends from the bottom to the top of the first cavity wall 11, the lower part of the main vein groove is communicated with the liquid storage structure 16, and the refrigerant at the bottom of the evaporation cavity is transferred and spread throughout the grid-shaped groove through the water absorption material in the main vein groove and the branch vein groove.

The refrigerant spreads over the first chamber wall 11 along the water absorbent material so that it is evaporated as close to the wall as possible, increasing the efficiency of the cooling capacity. The refrigerant spreads over the first cavity wall 11, the evaporation area of the refrigerant is increased from the liquid surface area of the bottom of the evaporation cavity to the sum of the liquid surface area of the bottom and the surface area of the water absorbing material raised part, the evaporation area of the refrigerant is increased, and the evaporation speed and the refrigerating capacity of the refrigerant can be greatly enhanced. The refrigerant is fully distributed on the first cavity wall 11 through the latticed grooves, so that the refrigerating capacity is uniform on the wall surface, and the utilization rate of the refrigerant is improved.

In some embodiments, to further promote the distribution of the refrigerant throughout the first cavity wall 11 along the water absorbent material, the branch grooves between two adjacent main groove correspondingly communicate.

In some embodiments, the evaporation cavity is provided with a vacuum-pumping pipeline, the adsorption cavity is provided with a vacuum-pumping pipeline, and the vacuum-pumping pipeline has the following main purposes: before the refrigerating box leaves a factory, a refrigerant is injected through a vacuum pumping pipeline; when the refrigerating box leaves a factory, a vacuum pump is used for adjusting the pressure in the evaporation cavity, the boiling point of the refrigerant is controlled, and the refrigerating temperature of the refrigerating box is set; when the refrigerating box is maintained, the pressure in the evaporation cavity is detected and adjusted through the vacuum-pumping pipeline.

In some embodiments, the plurality of support pillars 17 are disposed between the first cavity wall 11 and the second cavity wall 12, so as to effectively prevent the first cavity wall 11 and the second cavity wall 12 from deforming or breaking under low pressure or negative pressure, thereby reducing the wall thickness, facilitating to reduce the cost and the weight of the refrigerator. In some embodiments, the support posts 17 are welded at both ends to the first and second chamber walls 11 and 12, respectively.

In some embodiments, the water absorbing material is one of glass fiber, flannelette, cashmere wool and water absorbing resin, and the characteristics of the material that the material can absorb moisture, conduct moisture and greatly increase evaporation area are utilized to realize the advantages of simple structure, high reliability, high performance, environmental protection and the like of the evaporation cavity, so that the refrigerating box does not need to be driven by external energy in the refrigerating process, the rapid refrigeration is realized, the defect that the traditional compression type refrigerating box needs to be driven by an external power supply during the refrigeration is overcome, and the defects that the traditional ice bag type refrigerating box cannot control the refrigeration starting time and temperature and the like are overcome.

In some embodiments, the refrigerant is distilled water or pure water.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. A refrigerator, characterized in that: comprises that

The refrigerator comprises a refrigerator body (15), wherein a first cavity wall (11) is respectively arranged on the outer side of the refrigerator body (15), a second cavity wall (12) is oppositely arranged outside the first cavity wall (11), a space between the first cavity wall (11) and the second cavity wall (12) is an evaporation cavity, and a water absorbing material for absorbing refrigerant is arranged on one side, facing the evaporation cavity, of the first cavity wall (11);

the adsorption part (13), adsorption part (13) have the absorption chamber, the absorption chamber pass through heat transfer pipeline (14) with the evaporation chamber intercommunication, the valve has been arranged in heat transfer pipeline (14), arrange the adsorbent that is used for adsorbing the refrigerant in the absorption chamber.

2. The cooler of claim 1, wherein: and a latticed groove is formed in one side, facing the evaporation cavity, of the first cavity wall (11), and the water absorbing material is arranged in the latticed groove.

3. The cooler of claim 2, wherein: the latticed recess includes the bionical leaf vein cell body of a plurality of, bionical leaf vein cell body is including main arteries and veins recess, main arteries and veins recess is followed the bottom of first cavity wall (11) extends to the top, main arteries and veins recess shaping has a plurality of branch arteries and veins recess.

4. The cooler of claim 3, wherein: and branch vessel grooves between two adjacent main vessel grooves are correspondingly communicated.

5. The cooler of any one of claims 2 to 4, wherein: the bottom of the evaporation cavity is provided with a liquid storage structure (16).

6. The cooler of claim 5, wherein: the bottom of the latticed groove is communicated to the liquid storage structure (16).

7. The cooler of any one of claims 2 to 4, wherein: the water absorbing material protrudes out of the latticed groove.

8. The cooler of claim 1, wherein: a plurality of supporting columns (17) are arranged between the first cavity wall (11) and the second cavity wall (12).

9. The cooler of claim 1, wherein: the evaporation cavity is provided with a vacuum-pumping pipeline, and the adsorption cavity is provided with a vacuum-pumping pipeline.

10. The cooler of claim 1, wherein: the water-absorbing material is one of glass fiber, flannelette, wool and water-absorbing resin.

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