CN108836470A - It is a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray - Google Patents
It is a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray Download PDFInfo
- Publication number
- CN108836470A CN108836470A CN201810346061.1A CN201810346061A CN108836470A CN 108836470 A CN108836470 A CN 108836470A CN 201810346061 A CN201810346061 A CN 201810346061A CN 108836470 A CN108836470 A CN 108836470A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- pressure
- solenoid valve
- liquid
- carbon dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
- A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00452—Skin
- A61B2018/0047—Upper parts of the skin, e.g. skin peeling or treatment of wrinkles
Abstract
The present invention discloses a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray, including high-pressure nitrogen bottle, high-pressure carbon dioxide storage tank, cooling recirculation system, solenoid valve and nozzle；The outlet of high-pressure nitrogen bottle is connected by the entrance with carbon dioxide storage tank；The outlet of carbon dioxide fluid reservoir is connected with one end of high-pressure hose；The pipe side entrance of high-pressure hose tube side middle section changing-over double pipe heat exchanger, the pipe side outlet of double pipe heat exchanger take back high-pressure hose；The other end of high-pressure hose is connected with solenoid valve, and the output end of solenoid valve is equipped with the stainless steel straight pipe type two-fluid spray nozzle with heat-insulation vacuum layer.The present invention can be used cooperatively with the laser probe of any a laser, realize in vascular and pigmented dermatosis laser surgey to patient's normal epidermis tissue carry out efficiently with selectively cooling purpose.The thermal damage for preventing epidermis, improves therapeutic effect.
Description
Technical field
The fast quickly cooling of epidermis the invention belongs to cooling device technical field, in particular in a kind of laser skin thermotherapy operation
But device.
Background technique
Portwine stain is a kind of intradermal vascular malformation of congenital, low blood flow, and Neonatal Morbidity is about
0.3%, located subcutaneously depth is about 200~550 μm of (Schneider BV, Mistuhashi Y, Schnyder
UW.Ultrastructural observations in port wine stains.Ach Dermatol Res,1998,280
(6):338-345).And with advancing age, color spot color can gradually deepen, and pink-red-purple variation is presented and becomes
Gesture, or even incrustation occur, develop to be hemangioma.Since portwine stain is frequently located in the exposure portions such as human body face or neck, and
Seldom can spontaneous regression, therefore bring huge damage to patient's appearance, seriously affect the quality of life of patient.
Currently, laser has become the prefered method for the treatment of portwine stain, by selecting the laser of specific wavelength (clinical
It is upper mainly to use wavelength for the pulsed dye laser of 585nm and 595nm) it acts at patients target's skin, laser penetration epidermis
Reach intradermal absorbed by lesion vessels, blood vessel be heated to heat to melt, thus achieve the effect that treatment (Kelly KM,
Nelson JS.Update on the clinical management of port wine stains.Laser Med
Sci,2000,15(4):220-226).However, there are melanin to visible light wave segment limit (400nm-700nm) in epidermis
Light has stronger absorption, so that have quite a few treatment laser by melanin absorption during penetrating epidermis, thus
Lead to the problem of two：Reduce the laser energy for reaching intradermal lesion vessels, directly reduction therapeutic effect；It is another
Aspect, melanin absorption biggish to laser will lead to skin temperature rapid increase to burn the normal tissues such as epidermis, to controlling
Treatment brings greatly side effect (Ashinoff R, Geronemus RG.Treatment of a port-wine stain in
a black patient with the pulsed dye laser.J Dermatol Surg Oncol,1992,18(2):
147-148)。
It is various cold there are the risk of the skins normal tissue such as damage from laser epidermis due to during laser therapy PWS
But mode is widely used in dermatosis trea operation.Traditional type of cooling includes ice compress, the cooling of cold jewel contact
It is cooling with cold air jet stream.These types of cooling mainly utilize refrigerant and skin contact is thermally conductive or single-phase cross-ventilated side
Formula takes away heat from skin surface.Heat transfer intensity is lower, far from enough to the cooling protection of epidermis；And since the cooling used time is longer
(in minutes), while cooling epidermis, the lesion vessels temperature of subcuticle can be also reduced, the thermotherapy of laser is unfavorable for.
And it is generally used now using refrigerant R134a as the Dynamic spraying epidermis type of cooling (the Cryogen spray of working medium
Cooling, CSC), it is (usually tens of in the refrigerant of skin surface injection certain time by before laser action skin
Millisecond).The low-temperature refrigerant droplet impact skin surface of high volatile, and rapid evaporation, it is big to take away skin surface by phase transformation
Skin temperature quickly can be dropped to subzero 30 degrees Celsius by the heat of amount, and cooling time is very short, will not lesion blood to deep layer
Tube temperature degree affects greatly.Refrigerant sprays have the advantages that cooling efficiency is high, spatial selectivity is high, can effectively reduce skin hand
Thermal damage of the laser to epidermis normal tissue in art.
But there is also many problems for the conventional refrigerants such as R134a：
1. boiling temperature under atmospheric pressure is higher (about -26.07 DEG C) by taking R134a as an example, however it remains to disease
The deeper patient of stove (especially to the higher yellow race of epidermal melanin content) normal epidermis tissue cooling effect is bad
Problem.
The GWP value of the conventional refrigerants such as 2.R134a is all very high, has not met the environmental requirement of current era.
The cooling of 3.R134a Dynamic spraying can form liquid film in skin surface, reduce cooling spatial selectivity, and spraying cross
Section radius is larger, causes to be not easy accurately to control film-cooled heat in operation.
Summary of the invention
The object of the present invention is to provide a kind of based on the liquid CO for preventing nozzle frosting2The rapid cooling of flash boiling spray
Device, to solve the above technical problems.Apparatus of the present invention can reduce laser skin thermotherapy operation in patient's normal epidermis
The thermal damage of tissue helps the lesion processing for reaching skin deeper, improves treatment laser therapy efficiency, improve therapeutic effect,
Working medium liquid carbon dioxide WGP=1 simultaneously, has the characteristics that energy conservation and environmental protection.
To achieve the goals above, the present invention adopts the following technical scheme that：
It is a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray, including high-pressure nitrogen bottle, height
Press carbon dioxide storage tank, cooling recirculation system, solenoid valve and nozzle；The outlet of high-pressure nitrogen bottle by with carbon dioxide storage tank
Entrance is connected；The outlet of carbon dioxide fluid reservoir is connected with one end of high-pressure hose；High-pressure hose tube side middle section changing-over bushing type
The pipe side outlet of the pipe side entrance of heat exchanger, double pipe heat exchanger takes back high-pressure hose；The other end and solenoid valve of high-pressure hose
It is connected, the output end of solenoid valve is equipped with the stainless steel straight pipe type two-fluid spray nozzle with heat-insulation vacuum layer.
Further, the stainless steel straight pipe type two-fluid spray nozzle with heat-insulation vacuum layer is equipped with two-way nozzle：First jet
And second nozzle；Stainless steel straight pipe type two-fluid spray nozzle and the closely coupled first jet of solenoid valve with heat-insulation vacuum layer are logical
Enter carbon dioxide, second nozzle is passed through nitrogen, and nitrogen pressure is 0.5 ± 0.1MPa, for preventing with heat-insulation vacuum layer not
Rust steel straight pipe type two-fluid spray nozzle exit frosting, and nitrogen prevents carbon dioxide from forming liquid on surface to be cooled as protection gas
Film.
Further, high-pressure hose tube side cut-in temperature detection device and frequency-changeable compressor is controlled by singlechip controller；
Solenoid valve top is equipped with carbon dioxide bubble detection device, and the input terminal of solenoid valve is equipped with the number for controlling electromagnetic valve switch
Control device；Decompression is installed in the connecting pipe between entrance that the outlet of high-pressure nitrogen bottle passes through carbon dioxide storage tank
Pressure gauge is arranged in the export pipeline of pressure reducing valve in valve；The entrance for being passed through nitrogen is equipped with nitrogen magnetic valve；Nitrogen magnetic valve connection is used
In the numerical control device of control nitrogen magnetic valve switch.
Further, pressure is 6.5 ± 0.2MPa in carbon dioxide storage tank；The CO of the pipe side outlet of double pipe heat exchanger2
Temperature is 15 DEG C -20 DEG C.
Further, the pipeline of first jet is straight tube, and internal orifice dimension is 1~2mm, and length is 10~40mm, inner hole outside
Vacuum layer is with a thickness of 1mm, and nitrogen loop is on the outside of vacuum layer with a thickness of 0.1-0.5mm；The solenoid valve response time is respectively less than 1ms.
Further, entrance of the shell-side outlet of double pipe heat exchanger via gas-liquid separator connection frequency-changeable compressor, temperature
Spend working condition of the temperature of detection device point as temperature feedback via singlechip controller control frequency-changeable compressor, frequency conversion pressure
The outlet of contracting machine passes sequentially through the shell-side inlet of condenser, throttle valve connector sleeve pipe heat exchanger, forms refrigerating circulatory device.
Further, cold fluid is refrigerant moist steam in double pipe heat exchanger shell side, and guarantee tube side exit is liquid
Carbon dioxide.
Further, the high-pressure hose between double pipe heat exchanger and solenoid valve is the double-deck heat-insulation vacuum hose.
Further, the liquid carbon dioxide that nozzle sprays enters environment under low pressure and forms flash boiling spray, and by digital control
Unit controls two solenoid valve synchronous opening/closings and forms intermittence by spraying, and single spray time span is 20-100ms.
Further, the pipeline of second nozzle is helix tube, is coiled on the outside of the straight tube of first jet, second nozzle upper end
Sealing, the nitrogen being passed through, which spirals, to be flowed downward out, and the pressure for being passed through nitrogen is：The nitrogen of 0.5 ± 0.1MPa.
Further, temperature-detecting device formation temperature feedback is via singlechip controller control frequency-changeable compressor work shape
State.
Compared with prior art, the invention has the following beneficial technical effects：
1, core technical features of the present invention are flash boiling sprays：Carbon dioxide liquid with certain pressure is sprayed via nozzle
Moment enters environment under low pressure, and liquid becomes overheating nonequilibrium state, explosive broken atomization occurs, and accompanied by intense phase transformation flashes,
Generate a large amount of steam and low temperature fine drop even dry ice solid；Further, the fine drop of atomization and the impact of dry ice solid exist
Flash boiling spray composite heat-exchange process including nucleate boiling, forced convertion and evaporation occurs for patient skin.Broken system
Cryogen drop and dry ice are reduced since violent evaporation makes temperature fastly, quickly take away patient's skin to skin with being formed with spatial selectivity
The heat of skin deep layer simultaneously maintains low temperature, reaches the thermal damage of normal epidermis tissue caused by prevention and treatment laser.
2, carbon dioxide coolant has the characteristics that nontoxic to the human body, ozone free destruction.Carbon dioxide flash boiling spray
For multiphase flow form, and spray discharge pattern multiplicity, the operation requirement of different state of an illness patients can be met.It is used with prior art center
Refrigerant R134a is compared with R404a, and carbon dioxide coolant has lower boiling point under atmospheric pressure, and volatility is high, in nitrogen
Operation is not easy to form liquid film in skin surface under gas shielded gas, has stronger cooling capacity and cooling space selectivity, can help
Laser is helped to remove the lesion of deep skin, spray discharge pattern changes, is conducive to the accurate control of film-cooled heat, is easy to facing for doctor
Bed operation.
3, carbon dioxide coolant has the characteristics that low WGP, and readily available, without chemical synthesis and processing, Neng Gouqu
For existing high WGP refrigerant, the environmental-friendly performance and economy of system are improved, the theory of energy-saving and emission-reduction is met.
4, the control system that the present invention designs utilizes the production control for collecting bubble in the double-deck heat-insulation vacuum high-pressure hose
Make be connected laser switch unlatching and closure, effectively eliminate surgical procedure in due to cooling is not in place caused by laser heat waste
Wound is dangerous, and can cooperate according to requirements with the laser of different model and be combined, and expands use scope of the invention.
5, high-precision solenoid valve is used in the present invention, and by nozzle inlet end and the directly close phase of solenoid valve input terminal
Even, so that coolant has cracking action response, the primary time is switched less than 1ms, accurately to realize that the time is tens millis
The Dynamic spraying of second, so that cooling effect is more preferable.
6, present invention arrangement circularly cooling dress in high-pressure hose middle section between carbon dioxide storage tank bottom and solenoid valve input terminal
It sets, can guarantee that carbon dioxide coolant is liquid phase before operation, bubble is generated when preventing refrigerant liquid from flowing through high-pressure hose,
Enhance the cooling effect of Dynamic spraying.
7, the present invention guarantees do not have in operating environment using the stainless steel straight pipe type two-fluid spray nozzle for having heat-insulation vacuum layer
The medium easily to freeze further prevents the frosting that may cause in course of injection because temperature reduces blocking.
8, the controllable spray intervals time is arranged in the present invention, meets the refrigeration needs of the different state of an illness.
9, a variety of detectors are used in the present invention, are realized comprehensive visualizing monitor of capacity, temperature, fluidised form, be ensure that
Simple, the security performance of operation.
Detailed description of the invention
Fig. 1 is proposed by the present invention a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray
Schematic diagram.
Fig. 2 is nozzle arrangements schematic diagram.
In Fig. 1,1-high-pressure nitrogen bottle；2-pressure reducing valves；3-high-pressure hoses；4-pressure gauges；5-carbon dioxide storage tanks；
6-high-pressure hoses；7-double pipe heat exchangers；8-throttle valves；9-condensers；10-frequency-changeable compressors；11-gas-liquid separations
Device；12-carbon dioxide bubble detectors；13-solenoid valves；14-stainless steel straight pipe type the two-fluids with heat-insulation vacuum layer spray
Mouth；15-automatic control devices；16-external laser wires；17-carbon dioxide recycle cooling devices；18-nitrogen nozzles；
19-pressure gauges；20-temperature-detecting devices；21-singlechip controllers；22-solenoid valves.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawing：
Refering to Figure 1, the present invention is a kind of based on the liquid CO for preventing nozzle frosting2The rapid cooling of flash boiling spray fills
It sets, including high-pressure nitrogen bottle 1, pressure reducing valve 2, high-pressure hose 3, pressure gauge 4, carbon dioxide storage tank 5, high-pressure hose 6, bushing type are changed
Hot device 7, throttle valve 8, condenser 9, frequency-changeable compressor 10, gas-liquid separator 11, carbon dioxide bubble detector 12, solenoid valve
13, the stainless steel straight pipe type two-fluid spray nozzle 14 with heat-insulation vacuum layer, automatic control device 15, external laser wire 16,
Refrigerating circulatory device 17, nitrogen nozzle 18, pressure gauge 19, temperature-detecting device 20, singlechip controller 21 and solenoid valve 22.
The top exit of high-pressure nitrogen bottle 1 is connected by high-pressure hose 3 with the top of carbon dioxide storage tank 5, and high pressure is soft
Pressure reducing valve 2 and pressure gauge 4 are accessed in 3 middle section of pipe；5 bottom of carbon dioxide fluid reservoir is connected with one end of high-pressure hose 6；High-pressure hose
The pipe side entrance of 6 tube side middle section changing-over double pipe heat exchangers 7, the pipe side outlet of double pipe heat exchanger 7 take back high-pressure hose 6 and do
Insulation, 6 tube side cut-in temperature detection device 20 of high-pressure hose.The other end of high-pressure hose 6 is connected with solenoid valve 13, electricity
13 top of magnet valve is equipped with carbon dioxide bubble detection device 12, and the input terminal of solenoid valve 13 is equipped with to be switched for controlling solenoid valve 13
Numerical control device 15, the output end of solenoid valve 13 is equipped with the stainless steel straight pipe type two-fluid spray nozzle with heat-insulation vacuum layer
14。
The entrance of the shell-side outlet connection frequency-changeable compressor 10 of double pipe heat exchanger 7,20 formation temperature of temperature-detecting device
Feedback controls frequency-changeable compressor 10 via singlechip controller 21, and the outlet of frequency-changeable compressor 10 passes sequentially through condenser 9, throttling
The shell-side inlet of 8 connector sleeve pipe heat exchanger 11 of valve forms refrigerating circulatory device 17, is cooled to 15 for carrying out to carbon dioxide
DEG C~20 DEG C.In the double pipe heat exchanger 7 of cooling recirculation system 17, cold fluid is refrigerant moist steam, and hot fluid is i.e. cooled
Medium is carbon dioxide, and (further vaporization heat absorption, mass dryness fraction are got higher refrigerant moist steam in this process) is to guarantee exit two
Carbonoxide is liquid.7 outlet section branch cut-in temperature detection device 20 of double pipe heat exchanger guarantees liquid carbon dioxide temperature dimension
It holds at 15~20 DEG C.
Monitoring system of the invention includes pressure gauge 4, pressure gauge 19, temperature-detecting device 20 and bubble detection device 12,
Pressure gauge 4 is connected between 5 top high-voltage hose 3 of high-pressure nitrogen bottle 1 and carbon dioxide storage tank, for monitoring carbon dioxide storage tank 5
Interior pressure is in 6.5 ± 0.2Mpa；After pressure gauge 19 is connected in 5 outlet valve of carbon dioxide storage tank, liquid in carbon dioxide storage tank 5 is monitored
Pressure；Temperature-detecting device 20 is installed on 7 roads of double pipe heat exchanger, and monitoring temperature variation range is between 15 DEG C -20 DEG C
And formation temperature is fed back；Air-foam detector 12 is mounted on 13 upper end double-layer vacuum of solenoid valve insulation, 6 two sides of high-pressure hose, for supervising
It whether there is carbon dioxide bubble in test tube.
Control system of the invention includes sensor and control module；The sensor is carbon dioxide bubble sensor
12, air bubble sensor connects above solenoid valve 13；Sensor collection bubble signals, and the signal is transmitted to the control module,
When signal shows in hose that control module 15 will turn off laser there are when bubble.Control module 15 also can control transient state
Spraying duration and the spraying time interval for terminating to open to laser.
The fast reaction solenoid valve 13 that Dynamic spraying cooling means provided by the invention uses, with high response speed
Degree, switchs the primary time within 1ms, can accurately realize that the Dynamic spraying that spray time is a few tens of milliseconds is cooling.
It please refers to shown in Fig. 2, nozzle 14 is the stainless steel straight pipe type two-fluid spray nozzle with heat-insulation vacuum layer, with insulation
The stainless steel straight pipe type two-fluid spray nozzle 14 of vacuum layer is equipped with two-way nozzle：First jet 141 and second nozzle；It is true with insulation
The stainless steel straight pipe type two-fluid spray nozzle 14 and the closely coupled first jet of solenoid valve 13 of dead level are passed through carbon dioxide, the second spray
Mouth arrival end 18 and 22 outlet end of solenoid valve are closely coupled, and second nozzle is passed through nitrogen, and nitrogen pressure is 0.5 ± 0.1MPa, use
In the 14 exit frosting of stainless steel straight pipe type two-fluid spray nozzle for preventing from having heat-insulation vacuum layer, and nitrogen is prevented as protection gas
Carbon dioxide forms liquid film on surface to be cooled；The pipeline of first jet be straight tube, internal orifice dimension be 1~2mm, length be 10~
40mm, vacuum layer is with a thickness of 1-2mm on the outside of inner hole, and nitrogen loop is on the outside of vacuum layer with a thickness of 0.1-0.5mm；Solenoid valve 13 and electricity
22 response time of magnet valve is less than 1ms；Second nozzle is the circular loop around vacuum layer, and loop inside has with a thickness of 0.1-0.5mm
Swirl channel, the sealing of second nozzle upper end, the nitrogen being passed through spiral downward ejection, and the pressure for being passed through nitrogen is：0.5±0.1MPa
Nitrogen.
High-pressure hose double-layer vacuum hose between double pipe heat exchanger 7 and solenoid valve 13 guarantees that liquid carbon dioxide exists
It is not vaporized in transport.
Carbon dioxide bubble detector 12 is housed between solenoid valve 13 and high-pressure hose 6, clinic is carried out in cooperation laser and controls
Before treatment, it is necessary to CO2Spraying device carries out examination spray, until gas bubble detection 12 can't detect bubble, and works as in therapeutic process
In, if detecting bubble, numerical control device 15 controls laser by route 16 and closes, then to CO2Examination spray is carried out, until nothing
Bubble, to prevent laser in therapeutic process from causing to burn to patient normal skin tissue.
Solenoid valve 13 and 22 and stainless steel straight pipe type two-fluid spray nozzle 14 with heat-insulation vacuum layer can integrated installation grasping
Make on handle, operation handle can be combined with any laser.
Numerical control device 15 controls the Transient Sprays duration and terminates the time interval opened to laser by spraying,
And when carbon dioxide bubble detection device 12 detects bubble, numerical control device 15 can automatically closing laser switch, protect
Patient safety in card operation.
Solenoid valve 13 and solenoid valve 22 switch the primary time less than 1ms, and pressure resistance is greater than 8MPa.
Carbon dioxide bubble detector 12 can be every metal tubes detectable signal.
Quickly cooling device of the present invention can also be applied to remaining needs other than being applied to operation and being quickly cooled down skin
The field of rapid cooling, such as be quickly cooled down and need cooling wine.
Working medium is carbon dioxide, GWP 1, energy conservation and environmental protection in the present invention；Antifrost nozzle：It is arranged using two-fluid spray nozzle,
The double-layer vacuum material that nozzle uses, which is reduced, conducts heat and nitrogen protection gas is used to provide protection gas for working environment to prevent frosting.And
Prevent carbon dioxide from forming liquid film in skin surface.Liquid phase carbon dioxide is defeated by high-pressure hose by high pressure storage tank
Out, in high-pressure hose middle section tube side merging double pipe heat exchanger, the temperature of regulation of carbon dioxide guarantees that it is liquid before ejection
State, then be connected by high-pressure hose with fast reaction solenoid valve, snow nozzle is installed on electromagnetic valve outlet end, realizes to two
The carbonoxide misting cooling time is precisely controlled.The present invention can be used cooperatively with the laser probe of any a laser, real
Showed in vascular and pigmented dermatosis laser surgey to patient's normal epidermis tissue carry out efficiently with it is selectively cooling
Purpose.The thermal damage for preventing epidermis, improves therapeutic effect.
Claims (10)
1. a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray, it is characterised in that：Including high pressure
Nitrogen cylinder (1), high-pressure carbon dioxide storage tank (5), cooling recirculation system (17), solenoid valve (13) and nozzle (14)；
The outlet of high-pressure nitrogen bottle (1) with the entrance of carbon dioxide storage tank (5) by being connected；Carbon dioxide fluid reservoir (5) goes out
Mouth is connected with one end of high-pressure hose (6)；The pipe side entrance of high-pressure hose (6) tube side middle section changing-over double pipe heat exchanger (7), set
The pipe side outlet of pipe heat exchanger (7) takes back high-pressure hose (6)；
The other end of high-pressure hose (6) is connected with solenoid valve (13), and the output end of solenoid valve (13), which is equipped with, has heat-insulation vacuum
The stainless steel straight pipe type two-fluid spray nozzle (14) of layer.
2. according to claim 1 a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray,
It is characterized in that：Stainless steel straight pipe type two-fluid spray nozzle (14) with heat-insulation vacuum layer is equipped with two-way nozzle：First jet and
Second nozzle；Stainless steel straight pipe type two-fluid spray nozzle (14) with heat-insulation vacuum layer and solenoid valve (13) it is closely coupled first
Nozzle is passed through carbon dioxide, and second nozzle is passed through nitrogen, and nitrogen pressure is 0.5 ± 0.1MPa, for preventing with heat-insulation vacuum
Stainless steel straight pipe type two-fluid spray nozzle (14) exit frosting of layer, and nitrogen prevents carbon dioxide to be cooled as protection gas
Surface forms liquid film.
3. according to claim 2 a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray,
It is characterized in that：High-pressure hose (6) tube side cut-in temperature detection device (20) and the feedback letter as singlechip controller (21)
Number control frequency-changeable compressor (10)；Solenoid valve (13) top is equipped with carbon dioxide bubble detection device (12), solenoid valve (13)
Input terminal is equipped with the numerical control device (15) for controlling solenoid valve (13) switch；The outlet of high-pressure nitrogen bottle (1) by with
It is equipped in connecting pipe between the entrance of carbon dioxide storage tank (5) pressure reducing valve (2), is set in the export pipeline of pressure reducing valve (2)
Set pressure gauge (4)；The entrance for being passed through nitrogen is equipped with nitrogen magnetic valve；Nitrogen magnetic valve connection is for controlling nitrogen magnetic valve switch
Numerical control device (15).
4. according to claim 1 or 3 a kind of based on the liquid CO for preventing nozzle frosting2The rapid cooling of flash boiling spray fills
It sets, it is characterised in that：Carbon dioxide storage tank (5) interior pressure is 6.5 ± 0.2MPa；The pipe side outlet of double pipe heat exchanger (7)
CO2Temperature is 15 DEG C -20 DEG C.
5. according to claim 2 a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray,
It is characterized in that：The pipeline of first jet is straight tube, and internal orifice dimension is 1~2mm, and length is 10~40mm, vacuum layer on the outside of inner hole
With a thickness of 1mm, nitrogen loop is on the outside of vacuum layer with a thickness of 0.2-0.5mm；Solenoid valve (13) and solenoid valve (22) response time are equal
Less than 1ms.
6. according to claim 1 a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray,
It is characterized in that：The shell-side outlet of double pipe heat exchanger (7) enters via gas-liquid separator (11) connection frequency-changeable compressor (10)
Mouthful, the temperature of temperature-detecting device (20) point controls frequency-changeable compressor (10) via singlechip controller (21) as temperature feedback
Working condition make double pipe heat exchanger (7) pipe side outlet CO2Temperature is 15 DEG C -20 DEG C, frequency-changeable compressor (10)
Outlet passes sequentially through the shell-side inlet of condenser (9), throttle valve (8) connector sleeve pipe heat exchanger (7), forms refrigerating circulatory device
(17)。
7. according to claim 1 a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray,
It is characterized in that：Cold fluid is refrigerant moist steam in double pipe heat exchanger (7) shell side, and guarantee tube side exit is liquid dioxy
Change carbon.
8. according to claim 1 a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray,
It is characterized in that：High-pressure hose (6) between double pipe heat exchanger (7) and solenoid valve (13) is the double-deck heat-insulation vacuum hose.
9. according to claim 3 a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray,
It is characterized in that：The liquid carbon dioxide that nozzle (14) sprays enters environment under low pressure and forms flash boiling spray, and by digital control list
First (15) control solenoid valve (13) and solenoid valve (22) synchronous opening/closing form intermittence by spraying, and single spray time span is 20-
100ms。
10. according to claim 5 a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray,
It is characterized in that：The pipeline of second nozzle is helix tube, is coiled on the outside of the straight tube of first jet, the sealing of second nozzle upper end,
The nitrogen being passed through, which spirals, to be flowed downward out, and the pressure for being passed through nitrogen is：The nitrogen of 0.5 ± 0.1MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810346061.1A CN108836470B (en) | 2018-04-18 | 2018-04-18 | Liquid CO based nozzle frost prevention2Quick cooling device of flash evaporation spraying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810346061.1A CN108836470B (en) | 2018-04-18 | 2018-04-18 | Liquid CO based nozzle frost prevention2Quick cooling device of flash evaporation spraying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108836470A true CN108836470A (en) | 2018-11-20 |
| CN108836470B CN108836470B (en) | 2020-06-19 |
Family
ID=64212098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810346061.1A Active CN108836470B (en) | 2018-04-18 | 2018-04-18 | Liquid CO based nozzle frost prevention2Quick cooling device of flash evaporation spraying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108836470B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781176A (en) * | 2018-12-27 | 2019-05-21 | 西安交通大学 | Danger medium flash boiling spray two phase flow and mist generating device and test method |
| CN110411118A (en) * | 2019-07-31 | 2019-11-05 | 上海交通大学 | A kind of ultra-low temperature cold source material and preparation method thereof |
| CN111831039A (en) * | 2020-07-28 | 2020-10-27 | 北京计算机技术及应用研究所 | Independent cooler control system for laser scalpel |
| CN113749751A (en) * | 2021-09-07 | 2021-12-07 | 苏州海宇新辰医疗科技有限公司 | Dryness control method, dryness control device and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2099731U (en) * | 1991-04-03 | 1992-03-25 | 孙威 | Automatic inflatable solid air receiver for life-saving in water |
| CN1708261A (en) * | 2002-10-23 | 2005-12-14 | 帕洛玛医疗技术公司 | Phototreatment device for use with coolants and topical substances |
| CN2872058Y (en) * | 2005-10-26 | 2007-02-21 | 蔡道德 | Device for converting liquefied gas into high-pressure air supply |
| CN201515141U (en) * | 2009-07-09 | 2010-06-23 | 中国科学院理化技术研究所 | Two-fluid nozzle atomizing and cooling closed system for high-power solid laser |
| CN204072327U (en) * | 2014-07-14 | 2015-01-07 | 中国科学院苏州生物医学工程技术研究所 | A kind of contactless spraying skin chiller for laser therapy |
| CN105534143A (en) * | 2016-01-08 | 2016-05-04 | 长沙鹏跃五洋信息科技有限公司 | Cooling mat |
| CN106196717A (en) * | 2016-08-22 | 2016-12-07 | 广西大学 | A kind of tail gas waste heat for air conditioning for automobiles drives injection refrigerating system |
-
2018
- 2018-04-18 CN CN201810346061.1A patent/CN108836470B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2099731U (en) * | 1991-04-03 | 1992-03-25 | 孙威 | Automatic inflatable solid air receiver for life-saving in water |
| CN1708261A (en) * | 2002-10-23 | 2005-12-14 | 帕洛玛医疗技术公司 | Phototreatment device for use with coolants and topical substances |
| CN2872058Y (en) * | 2005-10-26 | 2007-02-21 | 蔡道德 | Device for converting liquefied gas into high-pressure air supply |
| CN201515141U (en) * | 2009-07-09 | 2010-06-23 | 中国科学院理化技术研究所 | Two-fluid nozzle atomizing and cooling closed system for high-power solid laser |
| CN204072327U (en) * | 2014-07-14 | 2015-01-07 | 中国科学院苏州生物医学工程技术研究所 | A kind of contactless spraying skin chiller for laser therapy |
| CN105534143A (en) * | 2016-01-08 | 2016-05-04 | 长沙鹏跃五洋信息科技有限公司 | Cooling mat |
| CN106196717A (en) * | 2016-08-22 | 2016-12-07 | 广西大学 | A kind of tail gas waste heat for air conditioning for automobiles drives injection refrigerating system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781176A (en) * | 2018-12-27 | 2019-05-21 | 西安交通大学 | Danger medium flash boiling spray two phase flow and mist generating device and test method |
| CN110411118A (en) * | 2019-07-31 | 2019-11-05 | 上海交通大学 | A kind of ultra-low temperature cold source material and preparation method thereof |
| CN111831039A (en) * | 2020-07-28 | 2020-10-27 | 北京计算机技术及应用研究所 | Independent cooler control system for laser scalpel |
| CN113749751A (en) * | 2021-09-07 | 2021-12-07 | 苏州海宇新辰医疗科技有限公司 | Dryness control method, dryness control device and storage medium |
| CN113749751B (en) * | 2021-09-07 | 2022-06-07 | 苏州海宇新辰医疗科技有限公司 | Dryness control method, dryness control device and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108836470B (en) | 2020-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108836470A (en) | It is a kind of based on the liquid CO for preventing nozzle frosting2The quickly cooling device of flash boiling spray | |
| CN109481003A (en) | A kind of low temperature nitrogen Cryoablation system | |
| EP1398002B1 (en) | Refrigeration source for a cryoablation catheter | |
| CN101732090B (en) | Cryoablation system with precooling device and control method thereof | |
| CN106152630B (en) | Fountain refrigerating plant and control method | |
| US20230338076A1 (en) | High and low temperature composite ablation surgery system | |
| CN102596119A (en) | Cryotreatment device using a supercritical gas | |
| CN104127236B (en) | A kind of contactless spraying skin chiller for laser therapy | |
| CN109682412A (en) | Cold nebulization cooling experiment device and method | |
| CN101292897A (en) | Cold-hot probe therapy system | |
| CN1935096A (en) | Nitrogen precooled throttling tumour ultra low temperature therapeutical system | |
| CN107928864A (en) | A kind of low temperature cold therapy system | |
| CN100438839C (en) | Jet impulse type brain refrigerating device | |
| CN107951558A (en) | The Cryoablation system of multifunctional gas pipeline control | |
| CN107929953B (en) | A kind of cold and hot double gas coupling refrigeration agent spray cooling systems for nevus of Ota treatment | |
| CN209499885U (en) | A kind of low temperature nitrogen Cryoablation system | |
| CN208838152U (en) | A kind of Cryoablation system of controllable balloon surface temperature | |
| CN204072327U (en) | A kind of contactless spraying skin chiller for laser therapy | |
| CN105902310A (en) | Cryosurgery device capable of achieving freezing and rewarming by adjusting gas pressure | |
| CN103357121A (en) | Device for rapidly cooling epidermis in laser skin thermal therapy operation | |
| CN201631375U (en) | Precooling device for ultralow temperature cryotherapy system | |
| CN205332643U (en) | Device that keeps frostless work of evaporimeter | |
| CN100361635C (en) | Pre cooling type refrigeration method and pre cooling type treatment device for curing tumour | |
| CN208511163U (en) | Cryoablation treatment puncture needle | |
| CN204618397U (en) | A kind of cryotherapy probe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |