Liquid nitrogen gasification mechanism and low-temperature cold therapy equipment

Abstract

The invention relates to the technical field of low-temperature cold therapy, and provides a liquid nitrogen gasification mechanism and low-temperature cold therapy equipment, the liquid nitrogen gasification mechanism comprises a gasification container, an atomization spraying unit and a conveying assembly, the gasification container is provided with a central cavity and an annular cavity, the lower part of the gasification container is provided with an air inlet, and the upper part of the annular cavity is communicated with the upper part of the central cavity; the atomizing and spraying unit is arranged in the gasification container; a nozzle of the atomizing and spraying unit is positioned at the upper part of the central cavity; the conveying assembly communicates with the lower portion of the center cavity, the center cavity and the annular cavity form flowing gas through the conveying assembly, and the gas exchanges heat with liquid nitrogen sprayed out of the atomization spraying unit to form low-temperature nitrogen. Gas enters the annular cavity from the gas inlet through the conveying assembly, flows to the upper portion of the center cavity from the upper portion of the annular cavity and makes full contact with liquid nitrogen small liquid beads sprayed out of the atomization spraying unit for heat exchange, heat exchange between liquid nitrogen and the gas at the gas inlet is more sufficient, a large amount of cooling capacity of the liquid nitrogen can be fully utilized, and therefore the liquid nitrogen gasification efficiency is improved; the air inlet air cooling speed is increased.

Description

Technical Field

[0001] The present invention relates to the field of cryotherapy technology, and in particular to a liquid nitrogen gasification mechanism and cryotherapy equipment. Background Art

[0002] Whole-Body Cryotherapy (WBC) involves subjecting the patient to a safe atmosphere at temperatures between -80°C and -180°C for 2-4 minutes. Research has shown that, on the one hand, low temperatures increase blood flow to muscles, facilitate the removal of waste products, reduce inflammation after strenuous exercise, and direct blood flow from large muscle groups to internal organs such as the heart and liver, protecting them. On the other hand, low temperatures stimulate the central nervous system, promoting the secretion of related hormones and alleviating muscle soreness. Furthermore, WBC has been shown to help with fatigue recovery, improve sleep quality, relieve tension and anxiety, and increase testosterone production.

[0003] The equipment for carrying out ultra-low temperature whole-body cryotherapy is a low-temperature cryotherapy chamber. The most widely used cooling method in the low-temperature cryotherapy chamber is the rapid vaporization of liquid nitrogen. In the existing technology, liquid nitrogen is directly atomized into low-temperature nitrogen gas, but the liquid nitrogen refrigeration speed is slow. Summary of the Invention

[0004] The present invention provides a liquid nitrogen gasification mechanism and low-temperature cryotherapy equipment, which are used to solve the defect of slow liquid nitrogen refrigeration speed in the prior art.

[0005] The present invention provides a liquid nitrogen gasification mechanism, comprising:

[0006] A vaporization container, wherein the vaporization container is configured with a central cavity and an annular cavity from the center outward, the lower portion of the vaporization container has an air inlet communicating with the annular cavity, and the upper portion of the annular cavity is communicated with the upper portion of the central cavity;

[0007] an atomizing spray unit, disposed in the gasification container, with a nozzle of the atomizing spray unit located at an upper portion of the central cavity;

[0008] The conveying assembly is connected to the lower part of the central cavity, and is suitable for forming flowing gas between the central cavity and the annular cavity, and exchanging heat between the gas and the liquid nitrogen sprayed by the atomizing spray unit to form low-temperature nitrogen.

[0009] According to an embodiment of the present invention, a liquid nitrogen gasification mechanism is provided, wherein the delivery component includes:

[0010] Fan;

[0011] A delivery pipeline, the lower part of which extends into the central cavity, and an annular atomization chamber is formed between the outer wall of the delivery pipeline and the side wall of the central cavity; the upper part of the delivery pipeline is communicated with the fan;

[0012] The nozzle of the atomization injection unit is located at the upper part of the annular atomization chamber.

[0013] A liquid nitrogen gasification mechanism according to an embodiment of the present invention, wherein a flow guiding component is arranged in the atomization chamber.

[0014] A liquid nitrogen gasification mechanism according to an embodiment of the present invention, wherein the flow guiding component includes a plurality of guiding fan blades arranged circumferentially on the outer wall of the delivery pipeline.

[0015] A liquid nitrogen gasification mechanism according to an embodiment of the present invention, wherein the atomization injection unit includes:

[0016] A plurality of atomization injection components, each atomization injection component includes at least one atomization nozzle, and the sizes of the atomization nozzles of the plurality of atomization injection components are different.

[0017] A liquid nitrogen gasification mechanism according to an embodiment of the present invention, wherein a plurality of air outlets arranged circumferentially are provided between the upper part of the central cavity and the upper part of the annular cavity, and a wind guiding plate is arranged at a position in the annular cavity that cooperates with the air outlets.

[0018] A liquid nitrogen gasification mechanism according to an embodiment of the present invention, wherein a heating component is provided at the lower part of the gasification container;

[0019] A drainage component communicated with the bottom of the central cavity is provided at the lower part of the gasification container.

[0020] The present invention also provides a cryotherapy device, including a device body and the liquid nitrogen gasification mechanism as described in any one of the above;

[0021] A treatment chamber and a gasification chamber are internally constructed in the device body, and a nitrogen air outlet and a nitrogen air return port are provided between the treatment chamber and the gasification chamber;

[0022] The liquid nitrogen gasification mechanism is arranged in the gasification chamber, the delivery component is communicated with the nitrogen air outlet, and the air inlet is communicated with the nitrogen air return port.

[0023] A cryotherapy device according to an embodiment of the present invention, wherein a nitrogen baffle covering the nitrogen air outlet is provided in the treatment chamber.

[0024] A cryotherapy device according to an embodiment of the present invention, further including a control mechanism;

[0025] At least one of the nitrogen outlet, the nitrogen return air inlet, inside the vaporization container, and inside the treatment chamber is equipped with a temperature measuring element;

[0026] The control mechanism is respectively connected to the temperature measuring element, the conveying assembly, and the atomizing injection unit. The control mechanism is adapted to adjust the conveying assembly and / or the atomizing injection unit based on the temperature measured by the temperature measuring element.

[0027] In the liquid nitrogen vaporization mechanism provided by the embodiment of the present invention, liquid nitrogen is introduced into the upper part of the central cavity through the atomizing injection unit. At the same time, the gas enters the annular cavity of the vaporization container from the air inlet through the conveying assembly, flows from the upper part of the annular cavity to the upper part of the central cavity, and fully contacts and exchanges heat with the small liquid droplets of liquid nitrogen ejected by the atomizing injection unit, enabling more sufficient heat exchange between the liquid nitrogen and the gas at the air inlet, being able to make full use of the large amount of cold energy of the liquid nitrogen, thereby improving the liquid nitrogen vaporization efficiency and increasing the cooling speed of the gas at the air inlet. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 is a schematic structural diagram of the liquid nitrogen vaporization mechanism provided by the embodiment of the present invention;

[0030] Figure 2 is a partial cross-sectional view of the liquid nitrogen vaporization mechanism provided by the embodiment of the present invention;

[0031] Figure 3 is a schematic structural diagram of the vaporization container provided by the embodiment of the present invention;

[0032] Figure 4 is one of the schematic structural diagrams of the vaporization container provided by the embodiment of the present invention;

[0033] Figure 5 is another schematic structural diagram of the vaporization container provided by the embodiment of the present invention;

[0034] Figure 6 is one of the schematic structural diagrams of the cryotherapy device provided by the embodiment of the present invention;

[0035] Figure 7 is another schematic structural diagram of the cryotherapy device provided by the embodiment of the present invention;

[0036] Figure 8 is yet another schematic structural diagram of the cryotherapy device provided by the embodiment of the present invention;

[0037] Figure 9 It is the fourth structural schematic diagram of the cryogenic cold therapy device provided by the embodiment of the present invention;

[0038] Figure 10 It is the fifth structural schematic diagram of the cryogenic cold therapy device provided by the embodiment of the present invention.

[0039] Reference numerals:

[0040] 1. Liquid nitrogen vaporization mechanism; 11. Vaporization container; 101. Central cavity; 102. Annular cavity; 103. Air inlet; 104. Air outlet;

[0041] 111. First housing; 112. Second housing; 113. Air guide plate; [[ID=!8]]

[0042] 12. Atomization injection unit; 121. Atomizing nozzle; 122. Solenoid valve;

[0043] 13. Conveying assembly; 131. Fan; 132. Conveying pipeline; 133. Motor;

[0044] 14. Flow guiding assembly;

[0045] 15. Heating component;

[0046] 16. Drainage component; 161. Drain pipe; 162. Drain valve;

[0047] 2. Equipment body; 21. Treatment compartment; 22. Vaporization compartment; 23. Nitrogen air outlet; 24. Nitrogen air return port. Detailed implementation manners

[0048] The following further describes in detail the implementation manners of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0049] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0050] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified or limited, the terms "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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0051] In the embodiments of the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0052] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0053] The following is combined with Figures 1 - 10 to describe the liquid nitrogen gasification mechanism of the embodiments of the present invention.

[0054] An embodiment of the first aspect of the present invention provides a liquid nitrogen gasification mechanism, as Figure 1 and Figure 2 shown, the liquid nitrogen gasification mechanism 1 includes a gasification container 11, an atomizing injection unit 12, and a conveying assembly 13.

[0055] Among them, the gasification container 11 is constructed with a central cavity 101 and an annular cavity 102 from the center outwards. The lower part of the gasification container 11 has an air inlet 103 communicating with the annular cavity 102, and the upper parts of the annular cavity 102 and the central cavity 101 are in communication; the atomizing injection unit 12 is arranged in the gasification container 11, and the nozzle of the atomizing injection unit 12 is located in the upper part of the central cavity 101; the conveying assembly 13 is in communication with the lower part of the central cavity 101, and the conveying assembly 13 is adapted to output nitrogen gas at the lower part of the central cavity 101.

[0056] It can be understood that a central cavity 101 and an annular cavity 102 located outside the central cavity 101 are formed inside the gasification container 11. The upper parts of the central cavity 101 and the annular cavity 102 are in communication, and an air inlet 103 is provided in the lower part of the gasification container 11. Then, the gas enters the lower part of the annular cavity 102 through the air inlet 103, flows upwards in the annular cavity 102 to the upper part of the annular cavity 102, and flows from the upper part of the annular cavity 102 to the upper part of the central cavity 101.

[0057] The atomizing injection unit 12 injects liquid nitrogen into the gasification container 11. The atomizing injection unit 12 is arranged at the upper end of the gasification container 11, is connected to an external liquid nitrogen tank, and the nozzle of the atomizing injection unit 12 extends into the upper part of the central cavity 101. Thus, the gas flowing from the upper part of the annular cavity 102 to the upper part of the central cavity 101 comes into full contact and heat exchange with the liquid nitrogen ejected by the atomizing injection unit 12, realizing the gasification of liquid nitrogen.

[0058] The conveying assembly 13 is in communication with the lower part of the central cavity 101. The conveying assembly 13 is in communication with the lower part of the central cavity 101. The conveying assembly 13 is adapted to make a flowing gas form in the central cavity 101 and the annular cavity 102, and make the gas exchange heat with the liquid nitrogen ejected by the atomizing injection unit 12 to form low-temperature nitrogen gas. Then, under the action of the conveying assembly 13, the gas enters the lower part of the annular cavity 102 through the air inlet 103, can flow upwards in the annular cavity 102 to the upper part of the annular cavity 102, and flows from the upper part of the annular cavity 102 to the upper part of the central cavity 101. Then, the gas entering the upper part of the central cavity 101 comes into full contact and heat exchange with the small liquid droplets of liquid nitrogen ejected by the atomizing injection unit 12, converting the liquid nitrogen into low-temperature nitrogen gas, and the converted low-temperature nitrogen gas is output from the gasification container 11 to the area to be refrigerated through the conveying assembly 13.

[0059] In the liquid nitrogen gasification mechanism provided by the embodiment of the present invention, liquid nitrogen is introduced into the upper part of the central cavity 101 through the atomizing injection unit 12. At the same time, the conveying assembly 13 makes the gas enter the annular cavity 102 of the gasification container 11 from the air inlet 103, flow from the upper part of the annular cavity 102 to the upper part of the central cavity 101, and come into full contact and heat exchange with the small liquid droplets of liquid nitrogen ejected by the atomizing injection unit 12, enabling more sufficient heat exchange between the liquid nitrogen and the gas at the air inlet, being able to make full use of a large amount of cold energy of the liquid nitrogen, thereby improving the liquid nitrogen gasification efficiency and increasing the cooling speed of the gas at the air inlet.

[0060] It should be noted that in the prior art, in the process of directly atomizing liquid nitrogen into low-temperature nitrogen gas, the conversion of liquid nitrogen is not sufficient, and there is a part of the residual liquid nitrogen that is not vaporized and directly ejected. If the liquid nitrogen directly contacts the human skin, it will damage the skin and thus pose a potential danger. The liquid nitrogen vaporization mechanism provided by the embodiment of the present invention enables the gas to fully contact and exchange heat with the small liquid droplets of liquid nitrogen ejected by the gas and atomization injection unit 12, and outputs the converted nitrogen gas through the conveying component 13, avoiding the problem of potential danger caused by the ejection of residual liquid nitrogen.

[0061] According to an embodiment of the present invention, as Figure 1 and Figure 3 shown, the vaporization container 11 includes a first housing 111 and a second housing 112 disposed within the first housing 111. There is a distance between the inner side wall of the first housing 111 and the outer side wall of the second housing 112, so as to form an annular cavity 102 between the first housing 111 and the second housing 112. The second housing 112 is a hollow structure, so that a central cavity 101 is formed inside the second housing 112.

[0062] The lower side wall of the first housing 111 is provided with an air inlet 103 communicating with the annular cavity 102, and an air inlet pipe can be connected to the air inlet 103.

[0063] As Figure 4 shown, the upper part of the second housing 112 is provided with an air outlet 104, so that the upper part of the central cavity 101 and the upper part of the annular cavity 102 are communicated through the air outlet 104, and the gas in the first housing 111 flows into the second housing 112 through the air outlet 104.

[0064] In this embodiment, a plurality of air outlets 104 are circumferentially provided on the upper part of the second housing 112. Preferably, the plurality of air outlets 104 are evenly distributed circumferentially.

[0065] Furthermore, a wind guiding plate 113 is disposed at a position in the annular cavity 102 that cooperates with the air outlet 104. In this embodiment, the wind guiding plate 113 is connected to the second housing 112.

[0066] Exemplarily, the wind guiding plate 113 is vertically arranged. One end of the wind guiding plate 113 is connected to the side wall of the air outlet 104, and the other end of the wind guiding plate 113 faces the first housing 111, so that a plurality of wind guiding plates 113 respectively corresponding to the side walls of the plurality of air outlets 104 are arranged in the annular cavity 102.

[0067] According to an embodiment of the present invention, the vaporization container 11 is provided with a heat insulation layer. Exemplarily, the outer wall of the first housing 111 of the vaporization container 11 is wrapped by multiple layers of sheet metal, which can protect the cold quantity of the liquid nitrogen and air refrigeration, and the transmitted cold quantity can pre-cool the air that is to contact the liquid nitrogen.

[0068] In one embodiment of the present invention, as Figure 2 shown, the conveying assembly 13 includes a blower 131 and a conveying pipeline 132. The lower part of the conveying pipeline 132 extends into the central cavity 101, and an annular atomization chamber is formed between the outer wall of the conveying pipeline 132 and the side wall of the central cavity 101; the upper part of the conveying pipeline 132 is communicated with the blower 131.

[0069] It can be understood that the conveying assembly 13 includes a blower 131 and a conveying pipeline 132 communicated with the blower 131. The blower 131 is located on the upper side of the gasification container 11. The blower 131 is communicated with one end of the conveying pipeline 132, and the other end of the conveying pipeline 132 passes through the second housing 112 and is located inside the first housing, so that the lower part of the conveying pipeline 132 extends into the central cavity 101.

[0070] There is a distance between the outer wall of the conveying pipeline 132 and the inner side wall of the second housing 112, so that an annular atomization chamber is formed between the outer wall of the conveying pipeline 132 and the inner wall of the second housing 112. There is a distance between the lower end surface of the conveying pipeline 132 and the bottom surface of the second housing 112, so that the annular atomization chamber is communicated with the inside of the conveying pipeline 132.

[0071] It can be understood that by using the suction of the blower 131, a flowing gas can be formed inside the gasification container 11, that is, the gas enters the annular cavity 102 of the gasification container 11 from the air inlet 103, flows from the upper part of the annular cavity 102 to the upper part of the central cavity 101, and the gas sucked into the upper part of the central cavity 101 and the small amount of liquid nitrogen droplets ejected by the atomization injection unit 12 are fully mixed and heat-exchanged to form a large amount of low-temperature nitrogen gas. Under the action of the suction of the blower 131, the nitrogen gas flows from top to bottom through the annular atomization chamber to the lower part of the annular atomization chamber, enters the air suction port of the blower 131 through the conveying pipeline 132, and is finally conveyed from the air outlet of the suction blower 131 to the area to be refrigerated.

[0072] Further, the blower 131 adopts a centrifugal blower. By using the strong suction of the centrifugal blower, a flowing gas is generated in the central cavity 101 and the annular cavity 102 inside the gasification container 11, and the internal space (central cavity 101 and annular cavity 102) of the gasification container 11 is made to have a negative pressure lower than the standard atmospheric pressure, which is beneficial to the gasification of liquid nitrogen.

[0073] Furthermore, the blower 131 is driven to move by a motor 133. The motor 133 can adopt a servo motor 133. The servo motor 133 can control the wind force magnitude and reverse rotation of the centrifugal blower to change the magnitude and direction of the flowing gas, and further realize the adjustment of the refrigerating capacity of liquid nitrogen refrigeration.

[0074] The cryogenic cold therapy device provided by the embodiment of the present invention sprays liquid nitrogen in the form of small droplets through the atomizing nozzle 121, uses a centrifugal fan to generate gas flow, and generates rotation inside the gasification container 11. Utilizing the negative pressure generated by the centrifugal fan for air extraction, the liquid nitrogen droplets are more likely to vaporize under a pressure lower than the standard atmospheric pressure. Using the interlayer of the gasification container 11, the liquid nitrogen beads adhere to the wall for vaporization heat exchange, thereby forming a large amount of low-temperature nitrogen gas.

[0075] In an embodiment of the present invention, as Figure 1 and Figure 5 shown, a diversion assembly 14 is provided in the atomizing chamber. By way of example, the diversion assembly 14 is provided on the outer wall of the conveying pipe 132 located in the central cavity 101. The diversion assembly 14 can be one group or multiple groups. When there are multiple groups of the diversion assembly 14, the multiple groups of the diversion assembly 14 are arranged at intervals along the axial direction of the conveying pipe 132. Each group of the diversion assembly 14 includes a plurality of guiding fan blades arranged at intervals along the circumferential direction on the outer wall of the conveying pipe 132. In other embodiments, the diversion assembly 14 can also be connected to the inner wall of the second housing 112.

[0076] It can be understood that under the action of the fan 131, the guiding fan blades generate the rotation of the flowing gas, and the gas sucked into the gasification container 11 and the small amount of liquid nitrogen droplets ejected by the atomizing injection unit 12 are fully mixed and heat-exchanged to form a large amount of low-temperature nitrogen gas. Under the action of the guiding fan blades, the full mixing and heat-exchange effect of the gas and liquid nitrogen is improved, thereby forming a large amount of low-temperature nitrogen gas and enhancing the liquid nitrogen gasification effect.

[0077] It should be noted that the guiding fan blades can also prevent the liquid nitrogen from flowing back. The guiding fan blades have a water-collecting function. During the gasification process of the small amount of liquid nitrogen ejected by the atomizing injection unit 12, if there is a small amount of residual unvaporized liquid nitrogen, it will drip onto the guiding fan blades, thus avoiding the potential safety hazard problems caused by the liquid nitrogen being transported out.

[0078] Furthermore, the diversion assembly 14 is arranged in close contact with the wall surface of the second housing 112 to prevent the liquid nitrogen from flowing out through the gap between the diversion assembly 14 and the second housing 112, which may affect the effect of the diversion assembly.

[0079] In an embodiment of the present invention, as Figure 1 and Figure 3 shown, the atomizing injection unit 12 includes a plurality of atomizing injection assemblies, and each of the atomizing injection assemblies includes at least one atomizing nozzle 121. The sizes of the atomizing nozzles 121 of the plurality of atomizing injection assemblies are different.

[0080] It can be understood that a plurality of atomizing injection assemblies are provided on the gasification container 11, and each atomizing injection assembly includes at least one atomizing nozzle 121. The sizes of the atomizing nozzles 121 of different atomizing injection assemblies are different.

[0081] Exemplarily, the cross-section of the nozzle of the atomizing nozzle 121 can be circular, and the different sizes of the atomizing nozzle 121 are the different sizes of the nozzle aperture of the atomizing nozzle 121.

[0082] Furthermore, in each atomizing injection assembly, all the atomizing nozzles 121 are connected to the liquid nitrogen tank through pipelines, and electromagnetic valves 122 are arranged on the pipelines. The working state of the atomizing nozzles 121 on the corresponding pipelines can be controlled through the electromagnetic valves 122. When the electromagnetic valve 122 is in the open state, the atomizing nozzle 121 works to eject liquid nitrogen. When the electromagnetic valve 122 is in the closed state, the atomizing nozzle 121 stops working.

[0083] It can be understood that the atomizing injection unit 12 further includes a plurality of electromagnetic valves 122. The number of electromagnetic valves 122 is equal to the number of atomizing injection assemblies and they are in one-to-one correspondence.

[0084] The different sizes of the nozzle apertures of the atomizing nozzles 121 of different atomizing injection units 12, that is, the different injection amounts of different atomizing injection units 12. Then, by adjusting the working states of different electromagnetic valves 122, the adjustment of the liquid nitrogen injection amount can be realized, and further the adjustment of the liquid nitrogen cooling capacity can be realized.

[0085] It should be noted that the number of atomizing nozzles 121 in different atomizing injection assemblies can be the same or different.

[0086] Exemplarily, the atomizing injection unit 12 includes three atomizing injection assemblies and three electromagnetic valves 122. The three atomizing injection assemblies are the first atomizing injection assembly, the second atomizing injection assembly, and the third atomizing injection assembly respectively. The first atomizing injection assembly includes two atomizing nozzles 121 (the first atomizing nozzles), the second atomizing injection assembly has three atomizing nozzles 121 (the second atomizing nozzles), and the third atomizing injection assembly has three atomizing nozzles 121 (the third atomizing nozzles). The three electromagnetic valves 122 are the first electromagnetic valve, the second electromagnetic valve, and the third electromagnetic valve respectively. The first electromagnetic valve is connected to the two first atomizing nozzles, the second electromagnetic valve is connected to the three second atomizing nozzles, and the third electromagnetic valve is connected to the three third atomizing nozzles; among them, the nozzle aperture sizes of the first atomizing nozzle, the second atomizing nozzle, and the third atomizing nozzle are different.

[0087] By opening the first electromagnetic valve and closing the second and third electromagnetic valves, the two first atomizing nozzles of the first atomizing injection assembly eject liquid nitrogen, that is, the first liquid nitrogen injection amount is realized.

[0088] By opening the second electromagnetic valve and closing the first and third electromagnetic valves, the three second atomizing nozzles of the second atomizing injection assembly eject liquid nitrogen, that is, the second liquid nitrogen injection amount is realized.

[0089] It should be noted that the adjustment of other liquid nitrogen injection amounts can also be achieved through the combination of multiple solenoid valves. For example, the first solenoid valve and the second solenoid valve are opened simultaneously.

[0090] It should be noted that the liquid nitrogen injection amounts of the first atomizing injection assembly, the second atomizing injection assembly, and the third atomizing injection assembly are different, resulting in different liquid nitrogen cooling capacities. Multiple atomizing injection assemblies with different liquid nitrogen injection amounts can be arranged to achieve different liquid nitrogen cooling capacities. Here, it should be noted that the different liquid nitrogen injection amounts of the atomizing injection assembly can be achieved by different numbers of atomizing nozzles 121, or by different aperture sizes of the atomizing nozzles 121, or by the combination of the number of atomizing nozzles 121 and the aperture size of the atomizing nozzles 121.

[0091] It should be noted that different liquid nitrogen cooling capacities can also be achieved by different liquid nitrogen injection amounts of the atomizing injection assembly, or by the wind force of the blower 131, or by the combination of both.

[0092] In the embodiment of the present invention, multiple atomizing injection assemblies can be connected to the liquid nitrogen tank through a main pipeline, thereby simplifying the structure of the atomizing injection unit 12.

[0093] In an embodiment of the present invention, as Figure 3 shown, a heating component 15 is provided at the lower part of the gasification container 11. After the refrigeration is completed, the heating component 15 is provided at the lower part of the gasification container 11 to quickly melt the ice water inside the gasification container 11, and a drainage component 16 communicating with the bottom of the central cavity 101 is provided at the lower part of the gasification container 11, and the melted water is discharged through the drainage component 16.

[0094] It can be understood that the heating component 15 can be a heater. In this embodiment, the heating component 15 is a heater provided on the outer wall of the second housing 112. After the refrigeration is completed, the gasification container 11 is heated by the heater, and the blower 131 blows back to achieve rapid water removal.

[0095] The heater quickly melts the ice water inside the gasification container 11, and the servo motor 133 connected to the blower 131 reverses at a small wind speed, so that the water vapor quickly sinks and is discharged through the drainage component 16 at the bottom of the gasification container 11.

[0096] Exemplarily, the drainage component 16 includes a drain pipe 161 provided outside the first housing 111 and connected to the bottom surface of the first housing 111. A drain valve 162 is provided on the drain pipe 161. A drain port communicating with the drain pipe 161 is opened on the bottom surface of the first housing 111. There is a distance between the bottom surface of the second housing 112 and the bottom surface of the first housing 111, and a drain hole is opened on the bottom surface of the first housing 111.

[0097] The melted water in the central cavity 101 of the gasification container 11 sinks to the bottom surface of the second housing 112, then sinks through the drain holes to the bottom surface of the first housing 111, and is discharged through the drain port on the bottom surface of the first housing 111 and the drain pipe 161.

[0098] An embodiment of the second aspect of the present invention provides a cryotherapy device, such as Figures 6 to 10 as shown, the cryotherapy device includes a device body 2 and the liquid nitrogen gasification mechanism 1 provided in any of the above embodiments.

[0099] Among them, a treatment chamber 21 and a gasification chamber 22 are constructed inside the device body 2, and a nitrogen outlet 23 and a nitrogen return port 24 are provided between the treatment chamber 21 and the gasification chamber 22; the liquid nitrogen gasification mechanism 1 is disposed in the gasification chamber 22, the conveying assembly 13 is communicated with the nitrogen outlet 23, and the air inlet 103 is communicated with the nitrogen return port 24.

[0100] Exemplarily, the device body 2 includes a treatment cabin body and a liquid nitrogen gasification cabin body provided on one side of the treatment cabin body. The treatment cabin body forms a treatment chamber 21 inside. The treatment cabin body includes a cabin body main body and a rotating cabin door slidably connected to the cabin body main body. The cabin body main body and the rotating cabin door can be closed by a magnetic attraction method to realize the treatment chamber 21.

[0101] A gasification chamber 22 is formed inside the liquid nitrogen gasification cabin body. The side wall of the treatment cabin body is provided with a nitrogen outlet 23 and a nitrogen return port 24. The nitrogen return port 24 is located below the nitrogen outlet 23. The nitrogen outlet 23 and the nitrogen return port 24 are used to realize the communication between the treatment chamber 21 and the gasification chamber 22.

[0102] The liquid nitrogen gasification mechanism 1 is disposed in the gasification chamber 22. The liquid nitrogen gasification mechanism 1 includes a gasification container 11, an atomization injection unit 12 and a conveying assembly 13. The gasification container 11 is disposed on the side wall of the gasification chamber 22. The fan 131 of the conveying assembly 13 is disposed on the side wall of the gasification chamber 22 and is located above the gasification container 11. The air inlet of the fan 131 is communicated with the gasification chamber 22 through a conveying pipe 132. The air outlet of the fan 131 is communicated with the nitrogen outlet 23. The nitrogen return port 24 is communicated with the gasification chamber 22. The air inlet 104 of the gasification container 11 is communicated with the gasification chamber 22, so that the nitrogen return port 24, the gasification chamber 22 and the air inlet 104 are sequentially communicated.

[0103] The atomization injection unit 12 includes a plurality of atomization injection assemblies. The atomization nozzles 121 of the plurality of atomization injection assemblies are disposed on the gasification container 11. The nozzle of the atomization nozzle 121 is located in the upper part of the central cavity 101. The atomization nozzle 121 is connected to an external liquid nitrogen tank through a pipeline.

[0104] The working principle of the cryotherapy device according to the embodiment of the present invention:

[0105] Under the action of the blower 131, the gas in the treatment chamber 21 enters the vaporization chamber 22 through the nitrogen return air outlet 24, and enters the lower part of the annular cavity 102 through the air inlet 103. It flows upward in the annular cavity 102 to the upper part of the annular cavity 102, and enters the upper part of the central cavity 101 from the upper part of the annular cavity 102. At the same time, the atomizing injection unit 12 sprays out liquid nitrogen droplets. The gas in the upper part of the central cavity 101 is in full contact with the liquid nitrogen droplets for heat exchange, converting the liquid nitrogen into low-temperature nitrogen, and flowing downward in the annular atomizing chamber, entering the treatment chamber 21 after passing through the delivery pipe 132, the blower 131, and the nitrogen air outlet 23. Circulate in this way to complete the refrigeration of the treatment chamber 21.

[0106] In the low-temperature cryotherapy device provided by the embodiment of the present invention, liquid nitrogen is introduced into the upper part of the central cavity 101 through the atomizing injection unit 12. At the same time, the gas enters the annular cavity 102 of the vaporization container 11 from the air inlet 103 through the delivery assembly 13, flows from the upper part of the annular cavity 102 to the upper part of the central cavity 101, and is in full contact with the liquid nitrogen droplets sprayed out by the atomizing injection unit 12 for heat exchange, enabling more effective heat exchange between the liquid nitrogen and the inlet gas, and being able to make full use of the large amount of cold of the liquid nitrogen, thereby improving the liquid nitrogen vaporization efficiency.

[0107] The low-temperature cryotherapy device provided by the embodiment of the present invention has the characteristics of fast liquid nitrogen refrigeration speed, large refrigeration capacity, lower refrigeration temperature, and saving liquid nitrogen energy, is convenient for use in various refrigeration environments, and is easier to operate.

[0108] Furthermore, heat-insulating materials are installed on the inner and outer walls of the treatment cabin. For example, the inner wall of the treatment cabin is provided with a soft package for the cabin, and the nitrogen air outlet 23 and the nitrogen return air outlet 24 are opened on the soft package of the treatment cabin.

[0109] In this embodiment, the treatment chamber 21 is mainly used for treatment. The treatment chamber 21 is preferably cylindrical, and such a shape is convenient for the human body to receive treatment inside. In order to make the treatment chamber 21 suitable for more people, especially for treatment personnel of different heights, a lifting platform is provided at the bottom of the treatment chamber 21, which is convenient for lifting according to the height of people.

[0110] In an embodiment of the present invention, the treatment chamber 21 is provided with a nitrogen baffle covering the nitrogen air outlet 23, and the vaporized nitrogen passes through the nitrogen air outlet 23 and enters the treatment chamber 21 under the action of the nitrogen baffle.

[0111] It can be understood that when treating the person being treated in the treatment chamber 21, to avoid the direct blowing of nitrogen on the human body, a nitrogen baffle is provided at the position of the nitrogen air outlet 23 in the treatment chamber 21. And to avoid a small amount of residual unvaporized liquid nitrogen from entering the treatment chamber 21 and causing a dangerous hidden danger due to the direct blowing of the liquid nitrogen on the person being treated.

[0112] In another embodiment of the present invention, the cryotherapy device further includes a control mechanism and a temperature measuring element; the temperature measuring element is installed at least at one of the nitrogen outlet 23, the nitrogen return port 24, inside the vaporization container 11, and the treatment chamber 21; the control mechanism is respectively connected to the temperature measuring element, the conveying assembly 13, and the atomizing injection unit 12, and the control mechanism is adapted to adjust the operating parameters of the conveying assembly 13 and / or the atomizing injection unit 12 based on the temperature measured by the temperature measuring element, so as to adjust the cooling capacity of the liquid nitrogen refrigeration.

[0113] It can be understood that the control mechanism is respectively connected to the temperature measuring element, the conveying assembly 13, and the atomizing injection unit 12. The control mechanism obtains the temperature measured by the temperature measuring element in real time, and adjusts the wind force of the fan 131 based on the temperature to adjust the cooling capacity of the liquid nitrogen refrigeration, so as to achieve treatment at a preset temperature; the control mechanism can also adjust the injection volume of the atomizing injection unit 12 based on the temperature; of course, the control mechanism can also adjust the wind force of the fan 131 and the injection volume of the atomizing injection unit 12 simultaneously based on the temperature to adjust the cooling capacity of the liquid nitrogen refrigeration. It should be noted here that the magnitude of the cooling capacity can characterize the magnitude of the treatment temperature.

[0114] Among them, temperature measuring elements can be arranged at the nitrogen outlet 23, the nitrogen return port 24, inside the vaporization container 11, and the treatment chamber 21, or only one or more of them can be provided with temperature measuring elements to realize temperature detection during the treatment process.

[0115] The temperature measuring element arranged in the treatment chamber 21 can adopt an infrared camera, which is mainly used to measure the temperature of the person being treated in the treatment chamber 21 and is electrically connected to the controller of the control mechanism.

[0116] The control mechanism is also electrically connected to the solenoid valve 122. The solenoid valve 122 is arranged on the liquid nitrogen delivery pipeline and is used to open or close the liquid nitrogen delivery pipe. Through the control mechanism, the operation of the solenoid valve 122 of each atomizing injection unit 12 can be controlled to realize the control and adjustment of the liquid nitrogen injection volume.

[0117] Exemplarily, the control mechanism includes a controller. The controller is electrically connected to the solenoid valve 122 and the temperature measuring element. The temperature is detected by the temperature measuring element. When the temperature in the treatment chamber 21 is lower than the set temperature, such as 160 °C, the temperature signal is transmitted to the controller, and the controller will send a control instruction to the solenoid valve 122 to close the solenoid valve 122, so that the liquid nitrogen can no longer be atomized, thereby temporarily suspending the treatment to avoid adverse reactions of the person being treated, etc.

[0118] The cryogenic cold therapy device provided by the embodiments of the present invention can control the gas flow by means of the blower 131, and control the working parameters (quantity and size of the atomizing nozzle 121) of the atomizing nozzle through the control mechanism and the wind speed control of the centrifugal blower to achieve the required cooling capacity. Through the centrifugal blower and the vaporization container 11, the heat exchange between the liquid nitrogen and the gas at the air inlet is made more sufficient, and the large amount of cold energy of the liquid nitrogen is fully utilized to achieve rapid cooling and a lower cooling temperature.

[0119] Furthermore, the cryogenic cold therapy device of this embodiment further includes a display, which is mainly used to display information such as relevant temperature and treatment time.

[0120] The cryogenic cold therapy device of this embodiment has a wireless control function. It can control the start and stop of the device through wifi, can be connected to electronic devices such as mobile phones, computers or pads, and the current treatment status of the treated person can be viewed and the device can be operated through the mobile phone, computer or pad device. It is also equipped with a Bluetooth speaker, which can be used to play music to provide a more suitable treatment environment for the treated person during treatment and relieve the tension during treatment.

[0121] Decorative lights are provided on the side and upper part of the treatment chamber of this embodiment. The cryogenic cold therapy device of this embodiment further includes an emergency stop button for forcibly stopping the operation.

[0122] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid nitrogen gasification mechanism, characterized in that, Comprising: A gasification container which is constructed from the center outwards with a central cavity and an annular cavity. The lower part of the gasification container has an air inlet communicating with the annular cavity, and the upper part of the annular cavity communicates with the upper part of the central cavity; An atomizing injection unit arranged in the gasification container, and the nozzle of the atomizing injection unit is located in the upper part of the central cavity; A conveying assembly which communicates with the lower part of the central cavity. The conveying assembly is adapted to cause a flowing gas to be formed in the central cavity and the annular cavity, and to cause the gas to exchange heat with the liquid nitrogen ejected by the atomizing injection unit to form low-temperature nitrogen.

2. The liquid nitrogen gasification mechanism according to claim 1, characterized in that, The conveying assembly includes: A blower; A conveying pipeline, the lower part of which extends into the central cavity. An annular atomizing chamber is formed between the outer wall of the conveying pipeline and the side wall of the central cavity; the upper part of the conveying pipeline communicates with the blower; The nozzle of the atomizing injection unit is located in the upper part of the annular atomizing chamber.

3. The liquid nitrogen gasification mechanism according to claim 2, characterized in that, A flow guiding assembly is arranged in the atomizing chamber.

4. The liquid nitrogen vaporization mechanism according to claim 3, characterized in that, The flow guiding assembly includes a plurality of guiding fan blades arranged circumferentially on the outer wall of the conveying pipeline.

5. The liquid nitrogen vaporization mechanism according to any one of claims 1 to 4, characterized in that, The atomizing injection unit includes: A plurality of atomizing injection assemblies, each atomizing injection assembly includes at least one atomizing nozzle, and the sizes of the atomizing nozzles of the plurality of atomizing injection assemblies are different.

6. The liquid nitrogen gasification mechanism according to any one of claims 1 to 4, characterized in that, A plurality of air vents arranged circumferentially are provided between the upper part of the central cavity and the upper part of the annular cavity, and air guiding plates are arranged at positions in the annular cavity that cooperate with the air vents.

7. The liquid nitrogen gasification mechanism according to any one of claims 1 to 4, characterized in that, A heating component is provided at the lower part of the gasification container; A drainage component communicating with the bottom of the central cavity is provided at the lower part of the gasification container.

8. A cryotherapy device at low temperature, characterized in that, Comprising an equipment body and the liquid nitrogen gasification mechanism according to any one of claims 1 to 7; The interior of the equipment body is constructed with a treatment chamber and a gasification chamber, and a nitrogen outlet and a nitrogen return air inlet are provided between the treatment chamber and the gasification chamber; The liquid nitrogen gasification mechanism is arranged in the gasification chamber, the conveying assembly communicates with the nitrogen outlet, and the air inlet communicates with the nitrogen return air inlet.

9. The cryogenic cold therapy device according to claim 8, wherein, A nitrogen baffle covering the nitrogen outlet is provided in the treatment chamber.

10. The cryogenic cold therapy device according to claim 8 or 9, characterized in that, Also including a control mechanism; A temperature measuring element is installed at least at one of the nitrogen outlet, the nitrogen return air inlet, inside the gasification container, and in the treatment chamber; The control mechanism is respectively connected to the temperature measuring element, the conveying assembly, and the atomizing injection unit. The control mechanism is adapted to adjust the working parameters of the conveying assembly and / or the atomizing injection unit based on the temperature measured by the temperature measuring element, so as to adjust the cooling capacity of the liquid nitrogen refrigeration.

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