Device for storing cold by using low-temperature working medium

Abstract

The device comprises a cold storage device shell, multiple layers of partition plates are sequentially and fixedly clamped in the cold storage device shell from bottom to top at equal intervals, a heat conduction rod is connected to the center of the cold storage device shell in a penetrating mode, and a connector is arranged at the lower end of the heat conduction rod; the rest part in the cold storage device shell is of a cavity structure, the cavity is filled with porous materials, and a spiral working medium inlet pipe and a spiral working medium outlet pipe are arranged on the upper portion of the cold storage device shell. According to the low-temperature working medium cold storage device, a cavity is formed by the multiple layers of partition plates and the shell of the low-temperature working medium cold storage device, the cavity is filled with an equivalent amount of porous materials made of high-thermal-conductivity materials, and the porous materials effectively accelerate the cold conduction speed; the phenomenon of supercooling generally existing in the low-temperature cold storage device and the symptom that local temperature and pressure are too high during cold release can be effectively reduced, the use cost can be greatly reduced by reducing energy loss, and therefore the use effect of the cold storage device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cold storage using low-temperature working fluids, and in particular to a device for cold storage using low-temperature working fluids. Background Art

[0002] The common cold storage device on the market is a device that uses phase change latent heat to store and release cold. The use of cold storage devices generally requires two reciprocal processes of storing cold and releasing cold. Due to the limitations of existing technology, common low-temperature cold storage media are generally gases with low thermal conductivity such as nitrogen and carbon dioxide. When using these gases, the low-temperature cold storage device generally has the "overcooling" phenomenon in its cold storage process and the local temperature and pressure are too high when releasing the cold, which affects the efficiency of cold storage. Summary of the invention

[0003] The purpose of the present invention is to provide a device for storing cold using a low-temperature working fluid. Compared with the prior art, this technical solution solves the technical problems raised in the background technology. To achieve the above purpose, the present invention provides the following technical solutions: a device for storing cold using a low-temperature working fluid, comprising a cold storage device shell, a plurality of partitions are fixed in sequence from bottom to top at equal distances inside the cold storage device shell, a heat conducting rod is connected through the center of the cold storage device shell, a joint is provided at the lower end of the heat conducting rod, the joint and the heat conducting rod are an integrally formed structure, the rest of the cold storage device shell is a cavity structure, the cavity is filled with porous materials, and a spiral working fluid inlet pipe and a spiral working fluid outlet pipe are provided at the upper part of the cold storage device shell.

[0004] Preferably, the dimensions of the multiple layers of partitions are consistent with the shape and dimensions of the interior of the cold storage device housing, and the partitions are welded and fixed to the inner side wall of the cold storage device housing.

[0005] Preferably, a heat conduction rod hole is provided at the central portion of the multi-layer partition, the center points of the heat conduction rod hole and the heat conduction rod holes at the central positions of the upper and lower parts of the cold storage device shell are on a vertical line, and a working fluid inlet pipe hole is provided on one side of the heat conduction rod hole, and a plurality of working fluid holes with regular distribution shapes are provided on the multi-layer partition.

[0006] Preferably, the size of the heat conductive rod is consistent with the shape and size of the designed multiple heat conductive rod holes, and the heat conductive rod passes through the bottom plate of the cold storage device shell, several of the heat conductive rod holes, and the top plate of the cold storage device shell in sequence and then extends to the outside.

[0007] Preferably, the spiral working fluid inlet pipe and the working fluid inlet pipe hole have the same diameter and corresponding positions.

[0008] Preferably, the portion of the spiral working fluid inlet pipe located inside the shell of the cold storage device is a straight pipe, and the lower end of the spiral liquid inlet pipe passes through the working fluid inlet pipe holes on the top plate and the multi-layer partitions of the shell of the cold storage device from top to bottom in sequence, and then extends to the bottom of the lowest cavity of the shell of the cold storage device.

[0009] Preferably, the lower end of the spiral working fluid outlet pipe passes through the upper top plate of the cold storage device shell and extends into the cavity formed by the top two partitions, and the lower end of the spiral working fluid outlet pipe is located at the upper part of the cavity.

[0010] The technical effects and advantages of the present invention are as follows: the low-temperature working fluid cold storage device forms a cavity with the shell of the low-temperature working fluid cold storage device through a multi-layer partition, and a considerable amount of porous material made of high thermal conductivity material is filled inside the cavity. The porous material effectively accelerates the cold conduction speed, and can effectively reduce the "overcooling" phenomenon commonly existing in low-temperature cold storage devices and the symptoms of excessive local temperature and pressure when releasing cold. It can greatly reduce the use cost by reducing energy loss, thereby improving the use effect of the cold storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall half-section structure of the present invention;

[0012] Figure 2 It is a partial half-section structure schematic diagram of the present invention;

[0013] Figure 3 It is a schematic diagram of the top view of the partition of the present invention.

[0014] In the figure, 1, shell of cold storage device; 2, partition; 21, hole for heat conduction rod; 22, hole for liquid inlet pipe; 23, hole for working medium; 3, heat conduction rod; 31, joint; 4, porous material; 5, spiral inlet pipe for working medium; 6, spiral outlet pipe for working medium. DETAILED DESCRIPTION

[0015] In order to make the technical means for realizing the present invention, the creative features, the objectives and effects to be achieved easy to understand, the present invention is further explained below in conjunction with specific diagrams. In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection or 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 connection of two components.

[0016] Example

[0017] like Figure 1-3As shown, a device for storing cold using a low-temperature working fluid comprises a cold storage device shell 1, which is made of durable high-quality stainless steel; multiple layers of partitions 2 are fixed in sequence from bottom to top at equal distances inside the cold storage device shell 1, and the partitions 2 are preferably made of a high thermal conductivity material, such as copper, and the sizes of the multiple layers of partitions are consistent with the shape and size of the inside of the cold storage device shell 1, and the partitions 2 are welded and fixed to the inner side wall of the cold storage device shell 1; a heat conducting rod 3 is connected through the center of the cold storage device shell 1, and the heat conducting rod 3 is preferably made of It is made of low-temperature resistant and high thermal conductivity material, such as copper. A joint 31 is provided at the lower end of the heat-conducting rod 3. The joint 31 and the heat-conducting rod 3 are an integrally formed structure. The low-temperature cold storage device is connected to the refrigerator or the heat load through the joint 31. The rest of the interior of the cold storage device shell 1 is a cavity structure, and a certain amount of porous material 4 is filled in the cavity. The porous material 4 is an open-pore foam metal with a certain porosity, and the good thermal conductivity of the metal is used to enhance the heat conduction efficiency of the cold storage device. A spiral working fluid inlet pipe 5 and a spiral working fluid outlet pipe 6 are provided on the upper part of the cold storage device shell 1.

[0018] Among them, a heat conduction rod hole 21 is provided at the center of the multi-layer partition 2 in the low-temperature cold storage device, and the center points of the heat conduction rod hole 21 and the heat conduction rod hole 21 at the center positions of the upper and lower parts of the cold storage device shell 1 are on a vertical line, and a working fluid inlet pipe hole is provided on one side of the heat conduction rod hole 21, and a plurality of regularly distributed working fluid holes 23 are provided on the multi-layer partition 2, and the working fluid holes 23 are regularly distributed channels for the working fluid to pass through the spaces separated by different partitions 2.

[0019] Among them, the size of the heat conductive rod 2 is consistent with the shape and size of the designed multiple heat conductive rod holes 21. The heat conductive rod 2 passes through the bottom plate of the cold storage device shell 1, multiple heat conductive rod holes 21, and the top plate of the cold storage device shell 1 in sequence and then extends to the outside.

[0020] Among them, the spiral working fluid inlet pipe 5 is consistent with the pipe diameter size of the working fluid inlet pipe hole 6 and the position corresponds to each other. When designing and producing the spiral working fluid inlet pipe 5 and the spiral working fluid outlet pipe 6, both working fluid inlet and outlet pipes are preferably made of stainless steel material with low thermal conductivity and low temperature resistance. Stainless steel is wear-resistant, durable and has good performance. The upper parts of the spiral working fluid inlet pipe 5 and the spiral working fluid outlet pipe 6 are both designed to be regular spirals and have a certain length and diameter. This design can reduce heat leakage and achieve the purpose of reducing energy loss.

[0021] The portion of the spiral liquid inlet pipe 5 located inside the cold storage device shell 1 is a straight pipe, and the lower end of the spiral liquid inlet pipe 5 passes through the top plate of the cold storage device shell 1 and the liquid inlet pipe holes on the multi-layer partition plate 2 from top to bottom in sequence, and then extends to the bottom of the lowest cavity of the cold storage device shell 1.

[0022] The lower end of the spiral outlet pipe 6 passes through the upper top plate of the cold storage device shell 1 and extends into the cavity formed by the top two partitions 2, and the lower end of the spiral outlet pipe 6 is located at the upper part of the cavity.

[0023] When the low-temperature cold storage device of the present invention is in use, the high thermal conductivity characteristics of each internal material are utilized to quickly conduct the cold during the cold storage and release process; when the device stores cold, the cold storage medium enters the cold storage device shell 1 through the spiral working medium inlet pipe 5, and the excess gas is discharged through the spiral working medium outlet pipe 6, the joint 31 is connected to a cold source, the cold storage medium stores cold through liquid-solid phase change, and is quickly conducted to the cold storage medium with the assistance of the internal high thermal conductivity material (porous material 4, partition 2 and heat conductive rod 3); when the device releases cold, the heat conductive rod 3 is connected to the heat load, the stored cold is released through the solid-liquid phase change, and is quickly conducted to the heat load with the assistance of the internal high thermal conductivity material; wherein the porous material 4, the partition 2 and the heat conductive rod 3 jointly play the role of enhancing thermal conductivity.

[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for storing cold using a low-temperature working medium, comprising a cold storage device housing, characterized in that: The inside of the shell of the cold storage device is fixed with multiple layers of partitions in sequence at equal distances from bottom to top. A heat conducting rod is connected through the center of the shell of the cold storage device. A joint is provided at the lower end of the heat conducting rod. The joint and the heat conducting rod are an integrally formed structure. The rest of the inside of the shell of the cold storage device is a cavity structure, and the cavity is filled with porous material. The upper part of the shell of the cold storage device is provided with a spiral working fluid inlet pipe and a spiral working fluid outlet pipe.

2. The device for storing cold using a low-temperature working medium according to claim 1, characterized in that: The size of the multi-layer partitions is consistent with the shape and size of the interior of the cold storage device shell, and the partitions are welded and fixed to the inner side wall of the cold storage device shell.

3. The device for storing cold using a low-temperature working medium according to claim 1, characterized in that: A heat conduction rod hole is provided at the center of the multi-layer partition, and the center points of the heat conduction rod holes and the heat conduction rod holes at the center positions of the upper and lower parts of the cold storage device shell are on a vertical line, and a working fluid inlet pipe hole is provided on one side of the heat conduction rod hole, and a plurality of working fluid holes with regular distribution shapes are provided on the multi-layer partition.

4. The device for storing cold using a low-temperature working medium according to claim 3, characterized in that: The size of the heat-conducting rod is consistent with the shape and size of the designed multiple heat-conducting rod holes. The heat-conducting rod passes through the bottom plate of the cold storage device shell, the multiple heat-conducting rod holes, and the top plate of the cold storage device shell in sequence and then extends to the outside.

5. The device for storing cold using a low-temperature working medium according to claim 3, characterized in that: The diameter of the spiral working medium inlet pipe is consistent with that of the working medium inlet pipe hole and their positions correspond.

6. The device for storing cold using a low-temperature working medium according to claim 5, characterized in that: The portion of the spiral liquid inlet pipe located inside the shell of the cold storage device is a straight pipe, and the lower end of the spiral liquid inlet pipe passes through the top plate of the shell of the cold storage device and the liquid inlet pipe holes on the multi-layer partitions from top to bottom in sequence, and then extends to the bottom of the lowest cavity of the shell of the cold storage device.

7. The device for storing cold using a low-temperature working medium according to claim 1, characterized in that: The lower end of the spiral working medium outlet pipe passes through the upper top plate of the cold storage device shell and extends into the cavity formed by the uppermost two partitions, and the lower end of the spiral working medium outlet pipe is located at the upper part of the cavity.

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