A cold recovery device for an ultralow-temperature cryotherapy cabin

Abstract

This utility model discloses a cold recovery device for an ultra-low temperature cryotherapy chamber, comprising a first cold recovery ring fixedly disposed on the top of the cryotherapy chamber and a second cold recovery ring disposed on top of the first cold recovery ring. The first and second cold recovery rings are used to sequentially recover the cold energy from the exhaust gas discharged from the top of the cryotherapy chamber. A recovery pipe extends along the contour of the first cold recovery ring, and fins are distributed on the surface of the recovery pipe. A first air inlet is opened on the inner side of the first cold recovery ring, and a first air outlet is opened on its top surface. The exhaust gas contacts the recovery pipe to achieve preliminary cold energy recovery. A phase change energy storage module is disposed within the second cold recovery ring. This device adopts a dual recovery structure of the first and second cold recovery rings, which can effectively realize the recovery of cold energy from the low-temperature exhaust gas discharged from the cryotherapy chamber, improve energy utilization, significantly reduce liquid nitrogen consumption, and reduce operating costs.

Description

Technical Field

[0001] This utility model relates to the field of cryotherapy chamber technology, specifically to a cold recovery device for an ultra-low temperature cryotherapy chamber. Background Technology

[0002] In the application of cryotherapy chambers (typically -120°C to -180°C), a continuous flow of cryogenic gas is required to maintain the necessary low-temperature environment inside the chamber. During or after treatment, the temperature of the exhaust gas inside the chamber remains at a low level, usually -100°C or even lower, containing considerable cold energy resources. Recovering this cold energy can effectively reduce the energy consumption required for the next round of air cooling, resulting in significant energy conservation and emission reduction benefits. However, traditional cryotherapy chamber systems generally lack effective cold recovery mechanisms, and the discharged cryogenic exhaust gas is often directly released into the environment, causing energy waste.

[0003] Even though some cold recovery devices have been applied in the field of cryotherapy chambers, they generally adopt a single-stage recovery structure with limited heat exchange efficiency, making it difficult to fully recover and reuse the cold energy in low-temperature exhaust gas. Moreover, traditional cold recovery devices mostly adopt a single-channel structure, resulting in uneven airflow distribution and local short circuits or dead zones, which affect the overall heat exchange performance.

[0004] To address these issues, a cold recovery device for an ultra-low temperature cryotherapy chamber is provided. Utility Model Content

[0005] The purpose of this invention is to provide a cold recovery device for an ultra-low temperature cryotherapy chamber, which solves the problem that existing cold recovery devices mainly adopt a single-stage recovery structure, have limited heat exchange efficiency, and are difficult to fully recover and reuse the cold energy in low-temperature exhaust gas.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A cold recovery device for an ultra-low temperature cryotherapy chamber includes a first cold recovery ring fixedly disposed on the top of the cryotherapy chamber and a second cold recovery ring disposed on top of the first cold recovery ring. The first and second cold recovery rings are used to sequentially recover the cold energy from the exhaust gas discharged from the top of the cryotherapy chamber. A recovery pipe extends along the contour direction inside the first cold recovery ring, and fins are distributed on the surface of the recovery pipe. A first air inlet is opened on the inner side of the first cold recovery ring, and a first air outlet is opened on its top surface. The exhaust gas contacts the recovery pipe to achieve preliminary cold energy recovery. A phase change energy storage module is disposed inside the second cold recovery ring. A second air inlet corresponding to the first air outlet is opened on the bottom surface of the second cold recovery ring, and a second air outlet is opened on its outer side surface. The exhaust gas contacts the phase change energy storage module to achieve further cold energy recovery.

[0008] As a further optimization of this utility model, a waste gas collection pipe is provided on the outer side of the second cold recovery ring, the second air outlet is connected to the waste gas collection pipe, and an air extraction component is provided at the end of the waste gas collection pipe, which is fixedly mounted on the second cold recovery ring.

[0009] As a further optimization of this utility model, the first cold recovery ring is provided with a plurality of first partition plates distributed along its circumference to divide the first cold recovery ring into a plurality of independent first recovery chambers. Each first recovery chamber has a first air inlet at one end and a first air outlet at the other end. The second cold recovery ring is provided with a plurality of second partition plates distributed along its circumference to divide the second cold recovery ring into a plurality of independent second recovery chambers. Each second recovery chamber is provided with a phase change energy storage module. Each second recovery chamber has a second air inlet on its bottom surface and a second air outlet on its outer side wall.

[0010] As a further optimization of this utility model, each of the first recovery chambers is provided with multiple staggered guide plates.

[0011] As a further optimization of this utility model, the second cold recovery ring is rotatably disposed on top of the first cold recovery ring. The device also includes a drive mechanism for driving the second cold recovery ring to rotate, so that the phase change energy storage module periodically contacts and separates from the exhaust gas. The drive mechanism includes a gear ring fixedly sleeved on the second cold recovery ring, a gear meshing with the gear ring, and a motor fixedly disposed on the cold therapy chamber. The gear is fixedly disposed on the output shaft of the motor.

[0012] As a further optimization of this utility model, the arc length of the first recovery chamber is greater than the arc length of the second recovery chamber.

[0013] As a further optimization of this utility model, the second air inlet has an elongated structure with multiple evenly distributed grid strips inside.

[0014] As a further optimization of this utility model, a protective ring plate is fixedly provided on the top of the first cold recovery ring, and the protective ring plate is located in the inner region of the second cold recovery ring.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. This utility model can effectively recover the cold energy in the low-temperature exhaust gas discharged from the cryotherapy chamber for precooling the next round of circulating air, thereby improving energy utilization, significantly reducing liquid nitrogen consumption, and lowering operating costs. Furthermore, it adopts a dual recovery structure of the first and second cold recovery rings to achieve cascade recovery of cold energy, further enhancing the overall cold energy utilization rate of the system.

[0017] 2. This utility model adopts a compartmentalized design, dividing the first cold recovery ring and the second cold recovery ring into multiple independent first recovery chambers and second recovery chambers, so that the low-temperature exhaust gas flows evenly in each independent channel, avoiding the problems of airflow short-circuiting or uneven distribution that exist in the traditional single-channel structure, and significantly improving the heat exchange uniformity and overall heat exchange efficiency.

[0018] 3. This utility model uses a drive mechanism to drive the phase change energy storage module to periodically contact and separate from the low-temperature exhaust gas, thereby enhancing airflow disturbance, improving the heat exchange efficiency between the low-temperature exhaust gas and the phase change energy storage module, and avoiding the performance degradation or structural fatigue caused by a single phase change energy storage module being exposed to extreme temperatures for a long time, thus extending the service life of the phase change energy storage module. Attached Figure Description

[0019] Figure 1 This is an assembly diagram of the present invention;

[0020] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0021] Figure 3 This is an exploded view of the overall structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the first cold recovery ring of this utility model;

[0023] Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of a local part of the structure;

[0024] Figure 6 This is a schematic diagram of the internal structure of the second cold recovery ring of this utility model;

[0025] Figure 7 For the present utility model Figure 6 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 8 This is a schematic diagram of the bottom structure of the second cold recovery ring of this utility model;

[0027] Figure 9 For the present utility model Figure 8 Enlarged schematic diagram of the structure at point B.

[0028] In the picture:

[0029] 1. First cold recovery ring; 101. First partition plate; 102. First air inlet; 103. First air outlet; 104. Guide plate; 2. Second cold recovery ring; 201. Second partition plate; 202. Phase change energy storage module; 203. Second air inlet; 203a. Grid strip; 204. Second air outlet; 3. Protective ring plate; 4. Recovery pipe; 401. Fin; 5. Exhaust gas collection pipe; 501. Exhaust gas extraction component; 6. Drive mechanism; 601. Gear ring; 602. Gear; 603. Motor. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] Example 1

[0032] To recover the cold energy from the exhaust gas discharged outside the chamber, improve energy efficiency, reduce liquid nitrogen consumption, and address the issue of insufficient heat exchange efficiency in existing cold recovery devices that primarily employ a single-stage recovery structure, please refer to [link to relevant documentation]. Figures 1-3 , Figure 7 This utility model provides a cold recovery device for an ultra-low temperature cryotherapy chamber, including a first cold recovery ring 1 fixedly disposed on the top of the cryotherapy chamber and a second cold recovery ring 2 disposed on the top of the first cold recovery ring 1. The first cold recovery ring 1 and the second cold recovery ring 2 are used to sequentially recover the cold energy in the exhaust gas discharged from the top of the cryotherapy chamber. A recovery pipe 4 extends along its contour direction inside the first cold recovery ring 1. Fins 401 are arranged on the surface of the recovery pipe 4. A first air inlet 102 is opened on the inner side of the first cold recovery ring 1, and a first air outlet 103 is opened on its top surface. The exhaust gas contacts the recovery pipe 4 to achieve preliminary cold energy recovery. A phase change energy storage module 202 is disposed inside the second cold recovery ring 2. A second air inlet 203 corresponding to the first air outlet 103 is opened on the bottom surface of the second cold recovery ring 2, and a second air outlet 204 is opened on its outer side surface. The exhaust gas contacts the phase change energy storage module 202 to achieve further cold energy recovery. The phase change energy storage module 202 adopts a through-type PCM module structure, in which the phase change material is composite molded with a porous substrate with high thermal conductivity (such as foamed metal, ceramic foam, etc.) to form a heat exchange component with a three-dimensional through-hole structure. This structure allows exhaust gas to pass directly through the interior of the porous medium, which increases the heat exchange contact area and significantly improves the cold energy transfer efficiency.

[0033] The outer side of the second cold recovery ring 2 is provided with an exhaust gas collection pipe 5, and the second air outlet 204 is connected to the exhaust gas collection pipe 5 to guide the exhaust gas after cold recovery to be discharged in a concentrated manner. The end of the exhaust gas collection pipe 5 is provided with an extraction component 501, which is fixedly installed on the second cold recovery ring 2. The extraction component 501 can be a gas conveying device with suction function, such as a fan or a micro vacuum pump, used to provide continuous and stable airflow power during the cold recovery process, accelerate the discharge of exhaust gas from the second cold recovery ring 2, and maintain the stability of the airflow circulation inside the system.

[0034] To improve heat exchange uniformity and efficiency, and to avoid uneven airflow in single-channel structures, such as Figures 5-7 As shown, the first cold recovery ring 1 has multiple first partition plates 101 distributed circumferentially inside, which are used to divide the first cold recovery ring 1 into multiple independent first recovery chambers. Each first recovery chamber has a first air inlet 102 at one end and a first air outlet 103 at the other end. Each first recovery chamber has multiple staggered guide plates 104 to enhance the turbulence of the exhaust gas in the first recovery chamber and improve the cold recovery efficiency. The second cold recovery ring 2 has multiple second partition plates 201 distributed circumferentially inside, which are used to divide the second cold recovery ring 2 into multiple independent second recovery chambers. Each second recovery chamber has a phase change energy storage module 202. Each second recovery chamber has a second air inlet 203 on the bottom surface and a second air outlet 204 on the outer side wall.

[0035] The design employs a compartmentalized approach, dividing the first cold recovery ring 1 and the second cold recovery ring 2 into multiple independent first recovery chambers and second recovery chambers, which allows the exhaust gas to flow uniformly in each independent channel. This avoids the problems of airflow short-circuiting or uneven distribution that exist in traditional single-channel structures, and significantly improves heat exchange uniformity and overall heat exchange efficiency.

[0036] During recovery, the exhaust gas from the cryotherapy chamber (usually around -100℃) enters the first cold recovery ring 1 from the top. The exhaust gas enters each of the first recovery chambers through the first air inlet 102. During the flow, the exhaust gas undergoes preliminary heat exchange with the recovery pipe 4. After completing the preliminary cold recovery, the exhaust gas is discharged from the first air outlet 103 and enters the second cold recovery ring 2. The exhaust gas enters each of the second recovery chambers through the second air inlet 203. The exhaust gas comes into direct contact with the phase change energy storage module 202 and transfers its remaining cold energy to the phase change energy storage module 202 to achieve further cold recovery. After completing the final cold exchange, the exhaust gas is discharged from the system through the second air outlet 204.

[0037] Example 2

[0038] Based on Embodiment 1, in order to improve the cold recovery effect of the phase change energy storage module 202 and avoid the performance degradation or structural fatigue caused by a single phase change energy storage module 202 being subjected to extreme temperatures for a long time, such as Figure 3 , Figures 8-9 As shown, the second cold recovery ring 2 is rotatably mounted on top of the first cold recovery ring 1. The device also includes a drive mechanism 6 for driving the second cold recovery ring 2 to rotate, so that the phase change energy storage module 202 periodically contacts and separates from the exhaust gas. The drive mechanism 6 includes a gear ring 601 fixedly sleeved on the second cold recovery ring 2, a gear 602 meshing with the gear ring 601, and a motor 603 fixedly mounted on the cold therapy chamber. The gear 602 is fixedly mounted on the output shaft of the motor 603.

[0039] The arc length of the first recovery chamber is greater than that of the second recovery chamber to ensure that the exhaust gas has sufficient cold recovery time in the first recovery chamber, and to enable each first recovery chamber to correspond to multiple phase change energy storage modules 202, thereby achieving more efficient cold energy distribution and recovery.

[0040] The second air inlet 203 has an elongated structure with multiple evenly distributed grid strips 203a inside. These strips enhance airflow disturbance during the rotation of the second cold recovery ring 2, thereby improving the heat exchange efficiency between the exhaust gas and the phase change energy storage module 202.

[0041] A protective ring plate 3 is fixedly provided on the top of the first cold recovery ring 1. The protective ring plate 3 is located in the inner area of ​​the second cold recovery ring 2 to prevent the human body from coming into contact with the rotating second cold recovery ring 2 and to ensure human safety.

[0042] The second cold recovery ring 2 is driven to rotate by the drive mechanism 6. The gear 602 and the gear ring 601 cooperate, and the motor 603 provides power. Each phase change energy storage module 202 enters and leaves the heat exchange area periodically with the ring body, comes into contact with the exhaust gas and absorbs cold energy. The periodic switching mechanism ensures that each position of the phase change energy storage module 202 can come into contact with the airflow, which not only improves the energy recovery efficiency of the overall system, but also avoids the performance degradation or structural fatigue caused by a single phase change energy storage module 202 being at extreme temperatures for a long time, extends the service life of the phase change energy storage module 202, and ensures the long-term stable operation of the system.

[0043] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A cold recovery device for an ultra-low temperature cryotherapy chamber, comprising a first cold recovery ring (1) fixedly disposed on the top of the cryotherapy chamber and a second cold recovery ring (2) disposed on top of the first cold recovery ring (1), characterized in that: The first cold recovery ring (1) and the second cold recovery ring (2) are used to sequentially recover the cold energy in the exhaust gas discharged from the top of the cold therapy chamber; The first cold recovery ring (1) has a recovery pipe (4) extending along its outline direction. The surface of the recovery pipe (4) is provided with fins (401). The inner side of the first cold recovery ring (1) is provided with a first air inlet (102) and the top surface is provided with a first air outlet (103). The waste gas comes into contact with the recovery pipe (4) to achieve preliminary cold energy recovery. The second cold recovery ring (2) is provided with a phase change energy storage module (202). The bottom surface of the second cold recovery ring (2) is provided with a second air inlet (203) corresponding to the first air outlet (103), and the outer side surface is provided with a second air outlet (204). The exhaust gas comes into contact with the phase change energy storage module (202) to achieve further cold energy recovery.

2. The cold recovery device for an ultra-low temperature cryotherapy chamber according to claim 1, characterized in that, The second cold recovery ring (2) is provided with an exhaust gas collection pipe (5) on its outer side. The second air outlet (204) is connected to the exhaust gas collection pipe (5). The exhaust gas collection pipe (5) is provided with an air extraction component (501) at its end. The air extraction component (501) is fixedly installed on the second cold recovery ring (2).

3. The cold recovery device for an ultra-low temperature cryotherapy chamber according to claim 1, characterized in that, The first cold recovery ring (1) is provided with a plurality of first partition plates (101) distributed along its circumference to divide the first cold recovery ring (1) into a plurality of independent first recovery chambers. Each first recovery chamber has a first air inlet (102) at one end and a first air outlet (103) at the other end. The second cold recovery ring (2) is provided with multiple second partition plates (201) distributed along its circumference to divide the second cold recovery ring (2) into multiple independent second recovery chambers. Each second recovery chamber is provided with a phase change energy storage module (202). Each second recovery chamber has a second air inlet (203) on its bottom surface and a second air outlet (204) on its outer side wall.

4. The cold recovery device for an ultra-low temperature cryotherapy chamber according to claim 3, characterized in that, Each of the first recovery chambers is equipped with multiple staggered baffles (104).

5. The cold recovery device for an ultra-low temperature cryotherapy chamber according to claim 3, characterized in that, The second cold recovery ring (2) is rotatably disposed on top of the first cold recovery ring (1). The device also includes a drive mechanism (6) for driving the second cold recovery ring (2) to rotate, so that the phase change energy storage module (202) periodically contacts and separates from the exhaust gas. The drive mechanism (6) includes a gear ring (601) fixedly sleeved on the second cold recovery ring (2), a gear (602) meshing with the gear ring (601), and a motor (603) fixedly mounted on the cold therapy chamber. The gear (602) is fixedly mounted on the output shaft of the motor (603).

6. The cold recovery device for an ultra-low temperature cryotherapy chamber according to claim 5, characterized in that, The arc length of the first recovery chamber is greater than the arc length of the second recovery chamber.

7. A cold recovery device for an ultra-low temperature cryotherapy chamber according to claim 6, characterized in that, The second air inlet (203) has a long strip structure and multiple evenly distributed grid strips (203a) inside.

8. A cold recovery device for an ultra-low temperature cryotherapy chamber according to claim 7, characterized in that, A protective ring plate (3) is fixedly provided on the top of the first cold recovery ring (1), and the protective ring plate (3) is located in the inner area of ​​the second cold recovery ring (2).

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