Evaporator for an ultralow-temperature cryotherapy chamber
By introducing a pre-cooling chamber and drug dosing components into the cryotherapy chamber evaporator, cold energy recovery and drug mixing are achieved, solving the problems of high liquid nitrogen consumption and slow cooling, improving cooling efficiency and treatment effect, and expanding the application range of the cryotherapy chamber.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YUNYU TECH CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-06-26
AI Technical Summary
Existing cryotherapy chamber evaporators consume large amounts of liquid nitrogen, have slow cooling speeds, low energy utilization rates, and limited functionality, making it difficult to meet the needs for rapid cooling and energy-saving operation. They also lack drug-assisted treatment modules, which limits their application scope in the field of rehabilitation medicine.
An evaporator for an ultra-low temperature cryotherapy chamber was designed, which adopts a dual cooling structure, including a pre-cooling chamber and an evaporator body. It utilizes the exhaust gas from the cryotherapy chamber to recover cold energy for initial cooling, and combines it with a drug dosing component to achieve mixing of drugs and low-temperature fresh air in the mixing chamber. Pulsed air supply and uniform drug mixing are achieved through rotating components, thereby improving heat exchange efficiency and therapeutic effect.
It significantly reduces liquid nitrogen consumption, improves cooling speed and energy efficiency, enables synergistic treatment of cryotherapy and drugs, and enhances the functionality and applicability of the cryotherapy chamber, making it suitable for fields such as skin diseases, chronic pain, and postoperative recovery.
Smart Images
Figure CN224415433U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cryotherapy chamber technology, specifically to an evaporator for an ultra-low temperature cryotherapy chamber. Background Technology
[0002] Ultra-low temperature (typically -120℃ to -180℃) cryotherapy chambers are increasingly being used in various fields such as sports injury recovery, chronic pain relief, and skin disease treatment. Existing cryotherapy chambers typically use liquid nitrogen refrigeration to cool fresh air and then deliver it into the chamber to provide low-temperature stimulation to the human body, achieving effects such as pain relief, anti-inflammation, and promoting blood circulation.
[0003] However, existing cryotherapy chamber evaporators generally suffer from problems such as high liquid nitrogen consumption, slow cooling speed, and low energy utilization during operation. They mostly adopt a single cooling path and lack effective utilization of cold energy recovery, resulting in high system energy consumption and long response time, making it difficult to meet the dual requirements of rapid cooling and energy-saving operation. In addition, existing evaporators have relatively simple functions and lack drug-assisted treatment modules, which limits their application scope in the field of rehabilitation medicine.
[0004] To address these issues, an evaporator for an ultra-low temperature cryotherapy chamber is provided. Utility Model Content
[0005] The purpose of this invention is to provide an evaporator for ultra-low temperature cryotherapy chambers, which solves the problems of large liquid nitrogen consumption, slow cooling speed and low energy utilization of existing cryotherapy chamber evaporators.
[0006] This utility model achieves the above objectives through the following technical solutions:
[0007] An evaporator for an ultra-low temperature cryotherapy chamber includes a shell fixedly mounted on the back of the cryotherapy chamber. The shell contains, from bottom to top, a pre-cooling chamber, an evaporator body, and a mixing chamber. The pre-cooling chamber contains a pre-cooling component for recovering cold energy from exhaust gas from the cryotherapy chamber to pre-cool the fresh air. The evaporator body cools the pre-cooled fresh air to a target low temperature. The top of the shell contains a drug delivery component for atomizing and spraying medication into the mixing chamber. The mixing chamber mixes the atomized medication with the target low-temperature fresh air and delivers the mixed gas into the cryotherapy chamber.
[0008] As a further optimization of this utility model, a fan and a purification box are provided in the chamber below the pre-cooling chamber; the fan is used to draw fresh air from the outside and deliver it to the purification box, the purification box is used to filter and purify the fresh air, and the top of the purification box is provided with an air outlet pipe for delivering fresh air to the pre-cooling chamber.
[0009] As a further optimization of this utility model, the precooling component includes a fixed cylinder and a precooling pipe disposed inside the fixed cylinder; the fixed cylinder is evenly provided with multiple air inlets in the circumferential direction, and the axial direction of each air inlet is tangent to the outer wall of the fixed cylinder; the precooling pipe is coiled along the contour of the fixed cylinder and its surface is provided with fins; the top of the fixed cylinder is provided with an opening and the bottom is a closed structure.
[0010] As a further optimization of this utility model, the dosing assembly includes a liquid storage tank, a micro spray pump located at the bottom of the liquid storage tank, and a control component for controlling the opening and closing of the micro spray pump.
[0011] As a further optimization of this utility model, a rotating component is provided on the inner wall of the fixed cylinder. The rotating component is used to periodically open and close the air inlet to realize the pulsed introduction of fresh air. The rotating component includes a rotating shaft rotatably disposed in the housing and an annular plate fixedly sleeved on the rotating shaft. Multiple ventilation holes are evenly distributed in the circumferential direction of the annular plate. The ventilation holes are periodically aligned with or staggered from the air inlet to realize the opening and closing of the air inlet.
[0012] As a further optimization of this utility model, the bottom end of the rotating shaft is provided with a fan wheel; the air outlet pipe is provided with an expansion pipe, and the fan wheel is located inside the expansion pipe, which is used to drive the rotating shaft to rotate by utilizing the kinetic energy of the air in the air outlet pipe.
[0013] As a further optimization of this utility model, the rotating component also includes a stirring blade disposed at the top of the rotating shaft for mixing the drug into the fresh air, and an incomplete gear for driving the control component; the control component includes a mounting base, a sector gear disposed at the bottom of the mounting base that rotates via a torsion spring, a sensing block fixedly disposed on the sector gear, and a sensing switch fixedly disposed at the bottom of the mounting base, wherein the sector gear meshes with the incomplete gear, and the sensing block approaches the sensing switch to start the micro spray pump.
[0014] The beneficial effects of this utility model are as follows:
[0015] 1. This utility model adopts a dual cooling structure of pre-cooling components and evaporator body. The fresh air first uses the cold energy recovered from the exhaust gas at the exhaust end of the cold therapy chamber for preliminary cooling, and then enters the evaporator body to receive deep cooling by liquid nitrogen or refrigerant. This not only effectively improves the comprehensive utilization rate of cold energy and reduces the load on the evaporator body, but also significantly reduces the consumption of liquid nitrogen, improves the overall cooling speed and energy efficiency ratio of the system, and enhances the energy saving and environmental protection level.
[0016] 2. This utility model adds a small amount of atomized drug through a drug addition component to form a low-temperature drug gas with therapeutic function, realizing synergistic treatment of cryotherapy and drug, improving rehabilitation effect, and is more suitable for fields such as skin diseases, chronic pain, and postoperative recovery, thus enhancing the functional versatility of the cryotherapy chamber.
[0017] 3. By setting a rotating component, this utility model can periodically open and close the air inlet to achieve pulsed air supply, enhance the turbulence effect in the precooling component, and thus improve the heat exchange efficiency. On the other hand, it can promote the uniform mixing of fresh air and drug droplets. Furthermore, through the linkage of the incomplete gear and the control component, it can achieve adaptive control of the dosing frequency and airflow state. Attached Figure Description
[0018] Figure 1 This is a cross-sectional view of the overall structure of this utility model;
[0019] Figure 2 This is a three-dimensional assembly diagram of the overall structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the precooling component assembly of this utility model;
[0021] Figure 4 This is a schematic diagram of the precooling component structure of this utility model;
[0022] Figure 5 This is a schematic diagram of the rotating component structure of this utility model;
[0023] Figure 6 This is a schematic diagram of the assembly of the rotating component of this utility model;
[0024] Figure 7 This is a schematic diagram of the evaporator body structure of this utility model;
[0025] Figure 8 This is a schematic diagram of the dosing assembly structure of this utility model;
[0026] Figure 9 This is a schematic diagram of the control component structure of this utility model.
[0027] In the picture:
[0028] 1. Shell; 101. Pre-cooling chamber; 102. Mixing chamber; 103. Fan; 104. Purification box; 105. Air outlet duct; 106. Expanding pipe; 2. Pre-cooling assembly; 201. Fixed cylinder; 202. Air inlet; 203. Pre-cooling pipe; 204. Fins; 3. Evaporator body; 4. Dosing assembly; 401. Liquid storage tank; 402. Micro spray pump; 403. Control components; 403a. Mounting base; 403b. Sector gear; 403c. Sensor block; 403d. Sensor switch; 5. Rotating components; 501. Rotating shaft; 502. Ring plate; 503. Ventilation hole; 504. Impeller; 505. Stirring blades; 506. Incomplete gear. Detailed Implementation
[0029] 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.
[0030] Example 1
[0031] To address the common problems of high liquid nitrogen consumption, slow cooling speed, and low energy efficiency in existing cryotherapy chamber evaporators, please refer to [link / reference needed]. Figures 1-3 , Figure 7 The present invention provides an evaporator for an ultra-low temperature cryotherapy chamber, comprising a shell 1 fixedly mounted on the back of the cryotherapy chamber. The shell 1 contains, from bottom to top, a pre-cooling chamber 101, an evaporator body 3, and a mixing chamber 102. The pre-cooling chamber 101 contains a pre-cooling component 2 for recovering cold energy from exhaust gas from the cryotherapy chamber exhaust end to pre-cool the fresh air. The evaporator body 3 is used to cool the pre-cooled fresh air to the target low temperature. The top of the shell 1 contains a drug delivery component 4 for atomizing and spraying medication into the mixing chamber 102. The mixing chamber 102 is used to mix the atomized medication with the target low-temperature fresh air and deliver the mixed gas into the cryotherapy chamber.
[0032] A fan 103 and a purification box 104 are installed in the chamber below the pre-cooling chamber 101. The fan 103 is used to draw fresh air from the outside and deliver it to the purification box 104. The purification box 104 is used to filter and purify the fresh air. The purification box 104 effectively removes suspended particles, bacteria, viruses and odorous gases from the air to ensure that the air quality delivered into the chamber meets medical or health standards. The top of the purification box 104 is provided with an air outlet duct 105 for delivering fresh air to the pre-cooling chamber 101.
[0033] like Figure 4As shown, the precooling assembly 2 includes a fixed cylinder 201 and a precooling pipe 203 disposed inside the fixed cylinder 201. The fixed cylinder 201 is evenly provided with multiple air inlets 202 in the circumferential direction. The axial direction of each air inlet 202 is tangent to the outer wall of the fixed cylinder 201 so that the incoming fresh air forms a rotating airflow. The precooling pipe 203 is arranged coiled along the contour of the fixed cylinder 201 and its surface is provided with fins 204 to enhance heat exchange. The top of the fixed cylinder 201 is provided with an opening for leading the precooled fresh air to the upper evaporator body 3. The bottom is a closed structure to ensure that the airflow circulates fully inside. After purification, the fresh air enters the fixed cylinder 201 through multiple tangential air inlets 202 circumferentially. Since the air inlets 202 are arranged tangentially, the fresh air forms a swirling effect in the fixed cylinder 201 after entering, which increases the turbulence intensity, destroys the boundary layer, and improves the heat exchange efficiency. The recovered cold air (low-temperature exhaust gas from the exhaust end of the cryotherapy chamber) flows in the pre-cooling pipe 203 and exchanges heat indirectly with the external rotating fresh air through the metal pipe wall and fins 204. After the fresh air completes the initial cooling, it flows out through the top opening of the fixed cylinder 201 and enters the evaporator body 3 for further deep cooling.
[0034] like Figure 8 As shown, the dosing assembly 4 includes a reservoir 401, a micro-spray pump 402 located at the bottom of the reservoir 401, and a control component 403 for controlling the opening and closing of the micro-spray pump 402. The reservoir 401 is used to store the drug solution to be atomized, such as anti-inflammatory agents, analgesics, aromatherapy ingredients, etc.
[0035] Fan 103 starts, drawing in ambient air from outside the cryotherapy chamber. The air first enters the purification chamber 104, where it undergoes purification through a multi-stage filtration system (such as pre-filters, high-efficiency HEPA filters, and activated carbon). The purified fresh air is then sent to the pre-cooling chamber 101 through the outlet duct 105. In the pre-cooling chamber 101, the fresh air undergoes initial cooling using the recovered cold air (typically around -100°C) from the pre-cooling component 2. The pre-cooled fresh air continues to rise and enters the evaporator body 3 for further cooling, ultimately reaching the mixing chamber. After the atomized medication is mixed in the combined chamber 102, it is sent into the cryotherapy chamber for cryotherapy of the human body. The specific cooling process of the evaporator body 3 is as follows: liquid nitrogen is transported from the storage tank through a special pipeline to the pipeline inside the evaporator body 3, where it quickly absorbs heat and evaporates into low-temperature nitrogen gas (temperature is about -196℃ to -100℃). During the process, a large amount of cold energy is released, and the outer wall of the pipeline becomes extremely cold. When fresh air flows over the surface of the pipeline, it is rapidly cooled to an ultra-low temperature (usually -120℃ to -180℃).
[0036] Example 2
[0037] Based on Example 1, in order to enhance the airflow disturbance of the pre-cooling component 2 during the heat exchange process and improve the indirect heat exchange efficiency between the fresh air and the recovered cold air, such as Figures 5-6As shown, a rotating component 5 is provided on the inner wall of the fixed cylinder 201. The rotating component 5 is used to periodically open and close the air inlet 202 to realize the pulsed introduction of fresh air. The rotating component 5 includes a rotating shaft 501 rotatably disposed in the housing 1, and an annular plate 502 fixedly sleeved on the rotating shaft 501. Multiple ventilation holes 503 are evenly distributed in the circumferential direction of the annular plate 502. The ventilation holes 503 are periodically aligned with or staggered from the air inlet 202 to realize the opening and closing of the air inlet 202.
[0038] The bottom end of the rotating shaft 501 is provided with a fan wheel 504; the air outlet pipe 105 is provided with an expansion pipe 106, and the fan wheel 504 is located inside the expansion pipe 106, which is used to drive the rotating shaft 501 to rotate by utilizing the kinetic energy of the air in the air outlet pipe 105.
[0039] Fresh air enters the pre-cooling chamber 101 from the purification box 104 through the outlet duct 105. The airflow in the outlet duct 105 impacts the impeller 504 in the expansion pipe 106, causing it to rotate. The impeller 504 drives the rotating shaft 501 to rotate synchronously, and the rotating shaft 501 drives the ring plate 502 to rotate. This causes the ventilation holes 503 on the ring plate 502 to periodically align with or deviate from the air inlet 202 on the fixed cylinder 201. When the ventilation holes 503 are aligned with the air inlet 202, fresh air enters the fixed cylinder 201. When the ventilation holes 503 are misaligned with the air inlet 202, the air inlet 202 is closed. This allows fresh air to enter the pre-cooling chamber 101 intermittently in a pulsed manner, enhancing the turbulence effect and improving heat exchange efficiency. The system uses its own airflow as a power source to drive the rotating component 5, requiring no additional energy input, thus saving energy and protecting the environment.
[0040] like Figures 8-9 As shown, the rotating component 5 also includes a stirring blade 505 located at the top of the rotating shaft 501 for mixing the drug into the fresh air, and an incomplete gear 506 for driving the control component 403. The control component 403 includes a mounting base 403a, a sector gear 403b rotated by a torsion spring at the bottom of the mounting base 403a, a sensing block 403c fixed on the sector gear 403b, and a sensor switch 403d fixed at the bottom of the mounting base 403a. The sector gear 403b meshes with the incomplete gear 506, and the sensing block 403c approaches the sensor switch 403d to start the micro spray pump 402. The sensing block 403c and the sensor switch 403d can each be magnetic sensing components, wherein the sensing block 403c is a permanent magnet, and the sensor switch 403d is a reed switch or a Hall effect sensor. When the sector gear 403b rotates, the sensing block 403c approaches the sensor switch 403d, triggering a signal to control the micro spray pump 402 to start.
[0041] During the rotation of the shaft 501, the incomplete gear 506 is driven to rotate, periodically meshing with the sector gear 403b. The sector gear 403b oscillates back and forth under the action of the torsion spring, driving the sensing block 403c to approach the sensing switch 403d. After the sensing switch 403d is triggered, the micro spray pump 402 is started, atomizing the drug solution and spraying it into the mixing chamber 102. During the rotation of the shaft 501, the stirring blade 505 is also driven to rotate, mixing the drug with fresh air.
[0042] 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. An evaporator for an ultra-low temperature cryotherapy chamber, comprising a shell (1) fixedly disposed on the back of the cryotherapy chamber, characterized in that: The housing (1) is provided with a precooling chamber (101), an evaporator body (3) and a mixing chamber (102) in the vertical direction from bottom to top. The precooling chamber (101) is equipped with a precooling component (2) for recovering cold energy from the exhaust gas at the exhaust end of the cryotherapy chamber to pre-cool the fresh air. The evaporator body (3) is used to cool the pre-cooled fresh air to the target low temperature; The top of the housing (1) is provided with a dosing assembly (4) for atomizing and spraying drugs into the mixing chamber (102). The mixing chamber (102) is used to mix the atomized drugs with the target low-temperature fresh air and deliver the mixed gas to the cryotherapy chamber.
2. The evaporator for an ultra-low temperature cryotherapy chamber according to claim 1, characterized in that, A fan (103) and a purification box (104) are provided in the chamber below the precooling chamber (101). The fan (103) is used to draw fresh air from the outside and deliver it to the purification box (104). The purification box (104) is used to filter and purify the fresh air. The top of the purification box (104) is provided with an air outlet pipe (105) for delivering fresh air to the pre-cooling chamber (101).
3. The evaporator for an ultra-low temperature cryotherapy chamber according to claim 2, characterized in that, The precooling assembly (2) includes a fixed cylinder (201) and a precooling pipe (203) disposed inside the fixed cylinder (201). The fixed cylinder (201) is uniformly provided with multiple air inlets (202) in the circumferential direction. The axial direction of each air inlet (202) is tangent to the outer wall of the fixed cylinder (201). The precooling pipe (203) is arranged coiled along the outline of the fixed cylinder (201) and its surface is provided with fins (204). The top of the fixed cylinder (201) is open and the bottom is closed.
4. The evaporator for an ultra-low temperature cryotherapy chamber according to claim 3, characterized in that, The dosing assembly (4) includes a reservoir (401), a micro spray pump (402) located at the bottom of the reservoir (401), and a control unit (403) for controlling the opening and closing of the micro spray pump (402).
5. The evaporator for an ultra-low temperature cryotherapy chamber according to claim 4, characterized in that, The inner wall of the fixed cylinder (201) is provided with a rotating part (5), which is used to periodically open and close the air inlet (202) to realize the pulsed introduction of fresh air; The rotating component (5) includes a rotating shaft (501) rotatably disposed in the housing (1) and an annular plate (502) fixedly sleeved on the rotating shaft (501). The annular plate (502) has a plurality of ventilation holes (503) evenly distributed in the circumferential direction. The ventilation holes (503) are periodically aligned with or offset from the air inlet (202) to realize the opening and closing of the air inlet (202).
6. The evaporator for an ultra-low temperature cryotherapy chamber according to claim 5, characterized in that, The bottom end of the rotating shaft (501) is provided with a wind turbine (504). An expansion pipe (106) is provided on the air outlet pipe (105), and the impeller (504) is located inside the expansion pipe (106) to drive the rotating shaft (501) to rotate using the kinetic energy of the airflow in the air outlet pipe (105).
7. The evaporator for an ultra-low temperature cryotherapy chamber according to claim 5, characterized in that, The rotating component (5) also includes a stirring blade (505) located at the top of the rotating shaft (501) for mixing the drug into the fresh air, and an incomplete gear (506) for driving the control component (403). The control unit (403) includes a mounting base (403a), a sector gear (403b) rotatably mounted on the bottom of the mounting base (403a) via a torsion spring, a sensing block (403c) fixed on the sector gear (403b), and a sensor switch (403d) fixed on the bottom of the mounting base (403a). The sector gear (403b) meshes with an incomplete gear (506), and the sensing block (403c) approaches the sensor switch (403d) to start the micro spray pump (402).