Freezing rehabilitation cabin capable of rapidly supplying nitrogen

Abstract

The invention discloses a quick nitrogen supply freezing rehabilitation cabin, which relates to the technical field of freezing rehabilitation cabins, and comprises a liquid nitrogen tank, a user cabin, a pressurized nitrogen supply mechanism and a control unit, the control unit is used for controlling the pressurizing nitrogen supply mechanism to perform pressurizing control; the pressurizing nitrogen supply mechanism pressurizes the liquid nitrogen tank and / or the conveying pipe assembly, a first pressure quick release path from the liquid nitrogen tank to the nitrogen release port is formed, and / or a second pressure quick release path from the conveying pipe assembly to the nitrogen release port is formed. The nitrogen release port of the user cabin forms a low-pressure area relative to the liquid nitrogen tank and the conveying pipe assembly, so that nitrogen in the liquid nitrogen tank can be quickly driven to the nitrogen release port in the low-pressure area through the first pressure quick release path and the second pressure quick release path, and the nitrogen is quickly released to the space in the cabin; when a user needs to carry out freezing rehabilitation, nitrogen can be released and used more quickly, and the use is more efficient.

Description

Technical Field

[0001] The present invention relates to the technical field of cryotherapy recovery chambers, and in particular to a cryotherapy recovery chamber capable of rapidly supplying nitrogen. Background Art

[0002] The cryotherapy recovery chamber is an advanced device that uses cryogenic technology to help the body recover. It has multiple significant effects: First, it can effectively reduce inflammation and swelling. This is mainly achieved by causing blood vessels to contract, thereby reducing the release of chemical mediators. Second, it performs well in relieving pain. It not only reduces the speed of nerve conduction, but also stimulates the body to secrete endorphins, thereby playing a good analgesic role. Third, it can accelerate the muscle recovery process. It can reduce the accumulation of metabolic waste in the muscles, while actively promoting the repair and regeneration of muscle tissue. Fourth, it helps to improve athletic performance. After experiencing it, users will feel significantly less fatigue, their muscle strength will be enhanced, and their joint flexibility will be greatly improved. In view of these excellent characteristics, the cryotherapy recovery chamber is favored by many professional athletes and rehabilitation therapists.

[0003] At present, the main components of the cryotherapy cabin are a liquid nitrogen tank, a vaporizer and a user cabin, such as the Chinese utility model "A Cryotherapy Cabin" with announcement number CN209048543U, which includes a customer cabin, a gas preparation box and an electric control box located on one side of the customer cabin. A liquid nitrogen tank is provided in the gas preparation box near the customer cabin. The opening of the liquid nitrogen tank is connected to one end of a first pipe, and the other end of the first pipe is provided with a vaporizer located on the same side of the liquid nitrogen tank. A switch valve is provided at the opening of the vaporizer, and the switch valve is located at the connection between the gas preparation box and the customer cabin. An air duct leading to the inner wall of the customer cabin is provided on the switch valve, and a plurality of air outlet holes are provided on the surface of the air duct. The top of the customer cabin is open, and a lifting platform is provided at the bottom of the customer cabin. An air intake machine is provided on the inner wall of the customer cabin, and one end of the air intake machine is connected to a ring located on the top of the customer cabin, and a plurality of through holes obliquely upward are provided on the ring.

[0004] However, the current cryo-rehabilitation chamber lacks an accelerated nitrogen supply design. It usually takes about a minute for the cryo-rehabilitation chamber to be turned on and to produce nitrogen normally, which needs to be improved. Summary of the invention

[0005] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0006] To achieve the above object, the present invention provides the following technical solution: a rapid nitrogen supply cryotherapy recovery chamber, comprising Liquid nitrogen tank, used to supply nitrogen; A user cabin having an inner cabin space for accommodating users and a nitrogen release outlet corresponding to the inner cabin space; Pressurized nitrogen supply mechanism; Control unit; in, A delivery pipe assembly for delivering nitrogen is provided between the liquid nitrogen tank and the nitrogen release outlet of the user cabin; The control unit controls the pressurized nitrogen supply mechanism to perform pressurization control; The pressurized nitrogen supply mechanism is configured to pressurize the liquid nitrogen tank and / or the delivery pipe assembly to form a first pressure quick release path from the liquid nitrogen tank to the nitrogen release outlet and / or form a second pressure quick release path from the delivery pipe assembly to the nitrogen release outlet.

[0007] As a further solution of the present invention: the pressurized nitrogen supply mechanism includes a first pressurizing component, the first pressurizing component includes A pressurized air pipe, one end of which is connected to the interior of the liquid nitrogen tank, and the other end of which is connected to a gas source for pressurizing the liquid nitrogen tank; A nitrogen supply pipe, one end of which is connected to the interior of the liquid nitrogen tank, and the other end of which is connected to the delivery pipe assembly.

[0008] As a further solution of the present invention: the first pressurizing component also includes Air pressure sensor, used to obtain the air pressure in the liquid nitrogen tank; Nitrogen supply output control valve, used to control the opening and closing of the nitrogen supply pipe; The control unit is also configured to have a pre-pressurization mode for controlling the first pressurization component; In the pre-pressurization mode, the air pressure information in the liquid nitrogen tank is obtained through the air pressure sensor, and the liquid nitrogen tank is pressurized through the air source so that the air pressure in the liquid nitrogen tank is in a first pressure range.

[0009] As a further solution of the present invention: the first pressurizing component also includes Air pressure input control valve, used to control the opening and closing of the pressurized air pipe.

[0010] As a further solution of the present invention: the control unit is further configured to have a pressurizing use mode for controlling the first pressurizing component; In the pressurized use mode, the air pressure information in the liquid nitrogen tank is obtained through the air pressure sensor, and the liquid nitrogen tank is pressurized through the air source, so that the air pressure in the liquid nitrogen tank is in a second pressure range higher than the first pressure range.

[0011] As a further solution of the present invention: the pressurized nitrogen supply mechanism includes a second pressurizing component, and the second pressurizing component includes a heating nozzle body; The heating nozzle body has a heating cavity, a heating input port communicating with the heating cavity, a heating output port communicating with the heating cavity, and a nozzle communicating with the heating output port; The liquid nitrogen tank supplies nitrogen to the heating input port through the first part of the delivery pipe of the delivery pipe assembly, and the nozzle supplies nitrogen to the nitrogen release port through the second part of the delivery pipe of the delivery pipe assembly; The heating nozzle body is provided with an electric heating element for heating the nitrogen in the heating chamber.

[0012] As a further solution of the present invention: the second pressurizing component also includes The nitrogen injection control valve is used to control the opening and closing of the communication channel between the heating output port and the nozzle.

[0013] As a further solution of the present invention: the heating chamber has a length direction from the heating input port to the heating output port; The heating nozzle body is provided with a plurality of electric heating elements which are arranged at intervals along the length direction of the heating chamber. The heating temperatures of the electric heating elements increase in sequence from the heating input port to the heating output port.

[0014] As a further solution of the present invention: the second pressurizing component also includes The shell, the heating nozzle body and the electric heating element are all installed in the shell.

[0015] As a further solution of the present invention: a water collecting groove is provided in the outer shell, and a drainage port corresponding to the water collecting groove is provided on the outer shell.

[0016] Compared with the prior art, the beneficial effects of the present technical solution are as follows: through the pressurization control of the pressurized nitrogen supply mechanism, a low-pressure area is formed at the nitrogen release outlet of the user cabin relative to the liquid nitrogen tank and the delivery pipe assembly, so that the nitrogen in the liquid nitrogen tank can be quickly driven to the nitrogen release outlet in the low-pressure area through the first pressure quick release path, or the nitrogen supplied from the liquid nitrogen tank to the delivery pipe assembly can be quickly driven to the nitrogen release outlet in the low-pressure area through the second pressure quick release path, so as to quickly release nitrogen into the cabin space; when the user needs to use it for cryotherapy rehabilitation, the nitrogen can be released and used faster and more efficiently.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1It is a schematic diagram of the structure of the present invention; Figure 2 It is another structural schematic diagram of the present invention, hiding Figure 1 The electrical connection lines in FIG. 1 and the first pressurizing component and the second pressurizing component are shown to be blocked; Figure 3 It is a structural schematic diagram of the user cabin in the present invention.

[0020] The corresponding symbols in the accompanying drawings are explained as follows: Liquid nitrogen tank-1, User cabin-2, cabin space-201, nitrogen release outlet-202, connecting window-203, Pressurized nitrogen supply mechanism-3, first pressurizing component-31, pressurized gas pipe-311, nitrogen supply pipe-312, gas source interface-313, air pressure sensor-314, nitrogen supply output control valve-315, air pressure input control valve-316, second pressurizing component-32, heating nozzle body-321, heating input port-322, heating output port-323, nozzle-324, electric heating element-325a, 325b, nitrogen injection control valve-326, shell-327, drain port-328, Control Unit-4, Delivery pipe assembly-5, Control Panel -6. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-3 In this embodiment, a cryo-rehabilitation cabin for rapid nitrogen supply includes a liquid nitrogen tank 1, a user cabin 2, a pressurized nitrogen supply mechanism 3, and a control unit 4. The liquid nitrogen tank 1 stores liquid nitrogen for supplying nitrogen. The user cabin 2 has an interior space 201 for accommodating users, and a nitrogen release outlet 202 corresponding to the interior space. A delivery pipe assembly 5 for delivering nitrogen is provided between the liquid nitrogen tank 1 and the nitrogen release outlet 202 of the user cabin. The control unit 4 is configured to control the pressurized nitrogen supply mechanism 3 to perform pressurization control. The pressurized nitrogen supply mechanism 3 is configured to pressurize the liquid nitrogen tank 1 and / or the delivery pipe assembly 5 to form a first pressure rapid release path from the liquid nitrogen tank 1 to the nitrogen release outlet 202 and / or to form a second pressure rapid release path from the delivery pipe assembly 5 to the nitrogen release outlet 202.

[0023] The design uses pressurization control of the pressurized nitrogen supply mechanism 3 to form a low-pressure area at the nitrogen release outlet 202 of the user cabin relative to the liquid nitrogen tank 1 and the delivery pipe assembly 5, so that the nitrogen in the liquid nitrogen tank 1 can be quickly driven to the nitrogen release outlet 202 in the low-pressure area through the first pressure quick release path, or the nitrogen supplied from the liquid nitrogen tank 1 to the delivery pipe assembly 5 can be quickly driven to the nitrogen release outlet 202 in the low-pressure area through the second pressure quick release path, so as to quickly release nitrogen to the cabin space 201; when the user needs to use it for cryotherapy recovery, the nitrogen can be released and used faster and more efficiently.

[0024] In some embodiments, the pressurized nitrogen supply mechanism 3 includes a first pressurizing component 31, and the first pressurizing component 31 includes a pressurized gas pipe 311 and a nitrogen supply pipe 312. One end of the pressurized gas pipe 311 is connected to the interior of the liquid nitrogen tank 1, and the other end of the pressurized gas pipe 311 is configured to be connected to a gas source for pressurizing the liquid nitrogen tank 1.

[0025] One end of the nitrogen supply pipe 312 is connected to the interior of the liquid nitrogen tank 1 , and the other end of the nitrogen supply pipe 312 is connected to the delivery pipe assembly 5 .

[0026] like Figure 2 As shown, one end of the pressurized air pipe 311 is connected to the interior of the liquid nitrogen tank 1 , and the other end of the pressurized air pipe 311 passes through the liquid nitrogen tank 1 upwards and is connected to the air source interface 313 .

[0027] like Figure 2 As shown, one end of the nitrogen supply pipe 312 is connected to the interior of the liquid nitrogen tank 1, and the other end of the nitrogen supply pipe 312 passes upward through the liquid nitrogen tank 1 and is connected to the delivery pipe assembly 5, so that the liquid nitrogen tank 1 can supply nitrogen to the delivery pipe assembly 5 through the nitrogen supply pipe 312, and then the delivery pipe assembly 5 supplies nitrogen to the nitrogen release port 202.

[0028] like Figure 3 As shown, the top of the user cabin 2 has a communication window 203 connected to the outside to prevent the user from having difficulty breathing due to the large amount of nitrogen released. The user cabin 2 has a cabin door (not shown) that can be opened / closed by a user.

[0029] By the connecting function of the delivery pipe assembly 5 and the gas pressurization in the liquid nitrogen tank 1 through the first pressurizing assembly 31, a pressure difference is formed between the interior of the liquid nitrogen tank 1 and the nitrogen release outlet 202, so that the fluid in the liquid nitrogen tank 1 is released toward the nitrogen release outlet 202 with a lower pressure, that is, the nitrogen in the liquid nitrogen tank 1 can be quickly supplied to the nitrogen release outlet 202 of the user cabin through the nitrogen supply pipe 312, so as to quickly release the nitrogen.

[0030] In some embodiments, the first pressurizing component 31 further includes a pressure sensor 214 for acquiring the air pressure in the liquid nitrogen tank 1 , and a nitrogen supply output control valve 315 for controlling the opening and closing of the nitrogen supply pipe 312 .

[0031] The control unit 4 is further configured to have a pre-pressurization mode for controlling the first pressurizing assembly 31 .

[0032] In the pre-pressurization mode, the air pressure information in the liquid nitrogen tank 1 is obtained through the air pressure sensor 314, and the liquid nitrogen tank 1 is pressurized through the air source so that the air pressure in the liquid nitrogen tank 1 is within a first pressure range.

[0033] In some embodiments, the first pressurizing component 31 further includes an air pressure input control valve 316 for controlling the opening and closing of the pressurizing air pipe 311 .

[0034] In some embodiments, the control unit 4 is further configured to have a pressurizing use mode for controlling the first pressurizing component 31 .

[0035] In the pressurized use mode, the air pressure information in the liquid nitrogen tank 1 is obtained through the air pressure sensor 314, and the liquid nitrogen tank 1 is pressurized through the air source, so that the air pressure in the liquid nitrogen tank 1 is in a second pressure range higher than the first pressure range.

[0036] In some embodiments, the air source includes an air pressure pump (not shown) that can be controlled by the control unit 4 .

[0037] In this embodiment, when the cryo-recovery chamber is turned on, the control unit 4 first runs the pre-pressurization mode, and correspondingly controls the first pressurization component 31 to work so that the gas pressure in the liquid nitrogen tank 1 is within the first pressure range.

[0038] Preferably, the control unit 4 first obtains the air pressure information in the liquid nitrogen tank 1 detected by the air pressure sensor 314, and when it is judged that the air pressure value in the liquid nitrogen tank 1 is lower than the first pressure range, controls the gas source to provide high-pressure gas, and controls the air pressure input control valve 316 to open, so that high-pressure gas can be injected into the liquid nitrogen tank 1 through the pressurized gas pipe 311 until the air pressure in the liquid nitrogen tank 1 rises to the first pressure range.

[0039] When the internal air pressure of the liquid nitrogen tank 1 rises to the first pressure range and no information indicating the need for refrigeration and nitrogen supply is received, the air pressure input control valve 316 is controlled to be closed, and the closed nitrogen supply output control valve 215 is cooperated to keep the pressure in the liquid nitrogen tank 1 within the first pressure range.

[0040] In some embodiments, during the pre-pressurization process or after the pre-pressurization is completed, when the usage information indicating the need for refrigerated nitrogen supply is received, the operation mode of pressurization is switched to the operation mode of pressurization, and the gas pressure in the liquid nitrogen tank is increased to the second pressure range by supplying a high-pressure gas source and the gas pressure input control valve 316 in an open state.

[0041] In some embodiments, the cryo-recovery chamber includes a control panel 6, through which the user can input instruction information for starting / stopping treatment, thereby enabling the control unit 4 to receive usage information indicating the need for cryo-nitrogen supply corresponding to the input instruction for starting treatment.

[0042] In some embodiments, after the gas pressure inside the liquid nitrogen tank 1 rises, the control unit 4 may correspondingly control the nitrogen supply output control valve 315 to open, so as to quickly supply nitrogen.

[0043] In some embodiments, when the liquid nitrogen tank 1 is in an upright state, the pipe opening on the pressurized gas pipe 311 that is in communication with the interior of the liquid nitrogen tank 1 is located at the top of the interior of the liquid nitrogen tank 1. The pipe opening on the nitrogen supply pipe 312 that is in communication with the interior of the liquid nitrogen tank 1 is located at the bottom of the interior of the liquid nitrogen tank 1, so that nitrogen can be quickly supplied during pressurization.

[0044] In some embodiments, the pressurized nitrogen supply mechanism 3 includes a second pressurizing component 32, and the second pressurizing component 32 includes a heating nozzle body 321; the heating nozzle body 321 has a heating chamber, a heating input port 322 connected to the heating chamber, a heating output port 323 connected to the heating chamber, and a nozzle 324 connected to the heating output port 323; the liquid nitrogen tank 1 supplies nitrogen to the heating input port 322 through the first part of the delivery pipe of the delivery pipe assembly 5, and the nozzle 324 supplies nitrogen to the nitrogen release port 202 through the second part of the delivery pipe of the delivery pipe assembly 5; the heating nozzle body 321 is provided with an electric heating element for heating the nitrogen in the heating chamber.

[0045] The vaporization speed of liquid nitrogen is accelerated by heating, so that the gas pressure inside the heating chamber can be quickly increased, so that it can be quickly sprayed out from the nozzle 324 for vaporization, thereby allowing the nitrogen to flow faster to the nitrogen release port 202 of the user cabin.

[0046] In some embodiments, the second pressurizing assembly 32 further includes a nitrogen injection control valve 326 for controlling the opening and closing of a communication channel between the heating output port 323 and the nozzle 324 .

[0047] In some embodiments, the heating chamber has a length direction from the heating input port 322 to the heating output port 323. The heating nozzle body 321 is provided with a plurality of electric heating elements arranged at intervals on the heating nozzle body 321 along the length direction of the heating chamber, and the heating temperatures of the electric heating elements increase in sequence from the heating input port 322 to the heating output port 323. That is, the heating temperature of the electric heating element 325a near the heating input port 322 is lower than the heating temperature of the electric heating element 325b near the heating output port 323, so that the nitrogen entering the heating chamber from the heating input port 322 and outputting from the heating output port 323 is gradually heated and gasified, and pressurized use is safer.

[0048] In some embodiments, the second pressurizing assembly 32 further includes a housing 327, and the heating nozzle body 321 and the electric heating element are installed in the housing 327. The housing 327 is used for protection on the one hand, and on the other hand, the heating nozzle body 321 and the electric heating element in the housing 327 can be thermally insulated from the outside, so that the heat loss is low.

[0049] In some embodiments, a water collecting groove is provided in the outer shell 327, and a drain port 328 corresponding to the water collecting groove is provided on the outer shell 327 to discharge condensed water, which makes the use safer.

[0050] In some embodiments, the nitrogen supply pipe 312 is connected to the heating input port 322 through the first part of the delivery pipe of the delivery pipe assembly 5, so that the liquid nitrogen tank 1 can supply nitrogen to the heating input port 322. The nozzle 324 is connected to the nitrogen release port 202 of the user cabin through the second part of the delivery pipe of the delivery pipe assembly 5.

[0051] In some embodiments, the liquid nitrogen tank 1 is pressurized with gas by the first pressurizing component 31 so that liquid nitrogen can be quickly supplied when nitrogen is needed; when the liquid nitrogen is supplied to the heating chamber through the nitrogen supply pipe 312 and the first part of the delivery pipe of the delivery pipe assembly 5, the liquid nitrogen is accelerated to vaporize by the pressurization method of the second pressurizing component 32, so that its internal air pressure is further increased, so that nitrogen can be supplied to the nitrogen release outlet 202 of the user cabin more quickly, thereby releasing nitrogen to the cabin space 201 more quickly to supply the user with cryotherapy recovery.

[0052] In some embodiments, when used for cryo-rehabilitation, the nitrogen supply output control valve 315 and the nitrogen injection control valve 326 are controlled to be opened, and the electric heating element is controlled to heat, so that the liquid nitrogen pressurized by the first pressurizing component 31 can quickly reach the heating chamber and be quickly supplied to the nitrogen release port 202 after accelerated vaporization; when suspended, the nitrogen supply output control valve 315 and the nitrogen injection control valve 326 are controlled to be closed, and the electric heating element is controlled to stop heating.

[0053] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A rapid nitrogen supply cryotherapy recovery chamber, characterized in that: include Liquid nitrogen tank, used to supply nitrogen; A user cabin having an inner cabin space for accommodating users and a nitrogen release outlet corresponding to the inner cabin space; Pressurized nitrogen supply mechanism; Control unit; in, A delivery pipe assembly for delivering nitrogen is provided between the liquid nitrogen tank and the nitrogen release outlet of the user cabin; The control unit controls the pressurized nitrogen supply mechanism to perform pressurization control; The pressurized nitrogen supply mechanism is configured to pressurize the liquid nitrogen tank and / or the delivery pipe assembly to form a first pressure quick release path from the liquid nitrogen tank to the nitrogen release outlet and / or form a second pressure quick release path from the delivery pipe assembly to the nitrogen release outlet.

2. The cryotherapy recovery chamber according to claim 1, characterized in that: The pressurized nitrogen supply mechanism includes a first pressurizing component, the first pressurizing component includes A pressurized air pipe, one end of which is connected to the interior of the liquid nitrogen tank, and the other end of which is connected to a gas source for pressurizing the liquid nitrogen tank; A nitrogen supply pipe, one end of which is connected to the interior of the liquid nitrogen tank, and the other end of which is connected to the delivery pipe assembly.

3. The cryotherapy recovery chamber according to claim 2, characterized in that: The first pressurizing assembly also includes Air pressure sensor, used to obtain the air pressure in the liquid nitrogen tank; Nitrogen supply output control valve, used to control the opening and closing of the nitrogen supply pipe; The control unit is also configured to have a pre-pressurization mode for controlling the first pressurization component; In the pre-pressurization mode, the air pressure information in the liquid nitrogen tank is obtained through the air pressure sensor, and the liquid nitrogen tank is pressurized through the air source so that the air pressure in the liquid nitrogen tank is in a first pressure range.

4. The cryotherapy recovery chamber according to claim 3, characterized in that: The first pressurizing assembly also includes Air pressure input control valve, used to control the opening and closing of the pressurized air pipe.

5. The cryotherapy recovery chamber according to claim 3, characterized in that: The control unit is also configured to have a pressurizing use mode for controlling the first pressurizing component; In the pressurized use mode, the air pressure information in the liquid nitrogen tank is obtained through the air pressure sensor, and the liquid nitrogen tank is pressurized through the air source, so that the air pressure in the liquid nitrogen tank is in a second pressure range higher than the first pressure range.

6. The cryotherapy recovery chamber according to any one of claims 1 to 5, characterized in that: The pressurized nitrogen supply mechanism includes a second pressurizing assembly, and the second pressurizing assembly includes a heating nozzle body; The heating nozzle body has a heating cavity, a heating input port communicating with the heating cavity, a heating output port communicating with the heating cavity, and a nozzle communicating with the heating output port; The liquid nitrogen tank supplies nitrogen to the heating input port through the first part of the delivery pipe of the delivery pipe assembly, and the nozzle supplies nitrogen to the nitrogen release port through the second part of the delivery pipe of the delivery pipe assembly; The heating nozzle body is provided with an electric heating element for heating the nitrogen in the heating chamber.

7. The cryotherapy recovery chamber according to claim 6, characterized in that: The second pressurizing assembly also includes The nitrogen injection control valve is used to control the opening and closing of the communication channel between the heating output port and the nozzle.

8. The cryotherapy recovery chamber according to claim 6, characterized in that: The heating chamber has a length direction from the heating input port to the heating output port; The heating nozzle body is provided with a plurality of electric heating elements which are arranged at intervals along the length direction of the heating chamber. The heating temperatures of the electric heating elements increase in sequence from the heating input port to the heating output port.

9. The cryotherapy recovery chamber according to claim 6, characterized in that: The second pressurizing assembly also includes The shell, the heating nozzle body and the electric heating element are all installed in the shell.

10. The cryotherapy recovery chamber according to claim 9, characterized in that: A water collecting groove is arranged in the outer shell, and a drainage port corresponding to the water collecting groove is arranged on the outer shell.

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