CN104825184A - Air coolers, cooling system comprising air coolers and temperature regulating and balancing method for CT (Computed Tomography) scanning machine - Google Patents
Air coolers, cooling system comprising air coolers and temperature regulating and balancing method for CT (Computed Tomography) scanning machine Download PDFInfo
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- CN104825184A CN104825184A CN201510207160.8A CN201510207160A CN104825184A CN 104825184 A CN104825184 A CN 104825184A CN 201510207160 A CN201510207160 A CN 201510207160A CN 104825184 A CN104825184 A CN 104825184A
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Abstract
The invention relates to air coolers, a cooling system comprising the air coolers and a temperature regulating and balancing method for a CT (Computed Tomography) scanning machine. A plurality of negative pressure fans are arranged on the back side of a condenser of each air cooler in an array form; a condensation water tank is also arranged below the condenser; a water pump is arranged in the condensation water tank; a porous spraying pipe is arranged at the upper end of the condenser and is connected with the water pump through a pipeline; the cooling system comprises a CT scanning machine, two parallel air coolers, a receiving controller, a transmitting processor, a bulb tube temperature sensor, a condenser temperature sensor, a detector temperature sensor and a displacement sensor; a cold air outlet of the auxiliary air cooler is connected into the main air cooler through a connector and is connected with a cold air outlet of the main air cooler in parallel; the cold air outlet of the auxiliary air cooler and the cold air outlet of the main air cooler are jointly communicated with an air inlet of a rack through a cold air pipeline. According to the invention, no condensation water is stored in the air coolers, so that the energy efficiency of refrigeration is improved; the cooling system directly refrigerates a CT scanning rack, so that air temperatures of the CT bulb tube and a detector assembly in the scanning rack are reduced.
Description
Technical field
Under the invention belongs to air conditioner surroundings, directed technical field of freezing is carried out to local heat source, relate to a kind of air-cooler and cooling system and CT Scanner temperature thereof to regulate and equalization methods, relate generally to the technical field of CT bulb heat radiation, particularly the equivalent heat capacity of high-power CT bulb improves and life.
Background technology
CT Scanner mainly comprises frame and the CT bulb that is arranged in frame and detector assembly, and wherein CT bulb is the x-ray source of CT, is the expendable part of high value.The tube core of CT bulb is formed primarily of filament, rotation target disc and vacuum chamber.Filament heating produces thermoelectron, bombards heavy metal target disc under high voltage direct current field action, produces X-ray.During the exposure of CT bulb, the electric energy of 99% is converted to heat energy, and the electric energy of 1% is converted to radial energy.Heat is absorbed by the insulating oil between tube core and shell, by oil circulation, carries out heat exchange, discharged by heat by the air heat exchanging system in frame by the machine frame inside air at heat exchanger and CT bulb place.
During the exposure of CT bulb, the hardware heatings such as filament, target disc, bearing produce micropartical, and when micropartical cumulative concentration in tube chamber arrives threshold value, tube chamber electrion, CT service life of sucker stops.
The current thermic load of tube core, for being deposited in intraluminal heat, is the heat of generation and the difference of distribute heat.
This difference is less, and the equivalent heat capacity of CT bulb is higher, and in tube chamber, micropartical hypertrophy is fewer, and the service life of CT bulb is longer.The overheated meeting of tube core causes micropartical hypertrophy to be aggravated, and makes reduce or damage the service life of CT bulb.
Detector assembly is for the x-ray dosage of ray after human body decay of sampling.Detector assembly is made up of with array way arrangement multiple detector crystal unit.Detector crystal noise temperature influence is comparatively large, and detector assembly space temperature need be kept in balance unanimously, and exceeding deviation can cause sampling error, the degree of accuracy of effect diagram picture.
In prior art, in frame, air heat exchange is mainly air-cooled and water-cooled.The heat radiation of major part CT frame adopts air cooling way.Frame is provided with air inlet and air outlet, and the air in CT bulb heat and frame carries out heat exchange, by frame blower fan, heat is discharged frame to machine room, then by the air-conditioning of machine room by exchange heat to outdoor.
Computer room temperature generally adjusts room temperature 23 degree by the air-conditioning of existing machine room, and usually at 23-28 degree, the heat of CT bulb is exchanged by the normal temperature air circulation of machine room.When CT bulb heat is higher, radiating efficiency deficiency will greatly shorten the service life of CT bulb.
Summary of the invention
Technical problem to be solved by this invention is, a kind of indoor integrated air-cooler and cooling system and CT Scanner temperature thereof of being installed on is provided to regulate and equalization methods, while effective cooling is carried out to CT bulb, can the air themperature in balanced detector assembly space, avoid the unbalanced detector error caused of detector assembly space temperature; Air-cooler, without the need to draining, has maintenance simple and easy, the advantage of noise reduction.
The present invention realizes like this, first a kind of air-cooler is provided, comprise casing and be arranged on compressor, vaporizer, condenser, exhaust fan and the Cool gas blower in casing, also comprise and be arranged on cold air outlet in casing and heat outlet, vaporizer and condenser are wholely set up and down, and are positioned at directly over condenser; Cool gas blower is arranged on the back side of vaporizer, the cold wind flowing through vaporizer formation is discharged by cold air outlet after Cool gas blower, the hot air flow flowing through condenser formation is discharged from heat outlet after exhaust fan, condenser sealing backside be pasted with negative pressure cab, on the back side of negative pressure cab, array is provided with multiple through hole, and on each through hole, correspondence is provided with negative-pressure air fan; Also be provided with condensate tray and condensation water tank in the below of condenser, be provided with water level switch and water pump in condensation water tank, the top of condenser is provided with porous shower, porous shower one end is closed, and its other end is connected with water pump by water pipe.
Further, condenser is provided with condensation copper pipe and radiating fin, and condensation copper pipe is arranged in radiating fin, and vaporizer is provided with evaporation copper and conduction cooling fin, and evaporation copper is arranged in conduction cooling fin, and conduction cooling fin and radiating fin up and down one are connected.
Further, between condensate tray and condensation water tank, be provided with water strainer, condensed water from condensate tray collect by after water strainer to condensation water tank.
Further, Cool gas blower is centrifugal fan, and negative-pressure air fan is axial fan.
Compared with prior art, the negative pressure cab that the high negative pressure wind machine array of air-cooler of the present invention is formed can set up larger draught head in the side, front and back of condenser, utilize negative pressure gravitation and gravity dual function, condensing drip evaporator external produced is abundant filming within the condenser, increase the contact area of condensing drip and condenser radiating fin and copper pipe, extend condensing drip residence time within the condenser, improve the evaporation efficiency of condensed water.Unnecessary condensing drip successively collects in condensate tray and condensation water tank.The condensed water that condensation water tank accumulates gets back to circulating of condenser above again by water pump and porous shower, when the condensed water that water tank accumulates is too much, air-cooler receives controller reduces negative pressure wind unit air quantity according to condenser temperature and cistern water level signal dynamics, utilize the heat of condensing tube by unnecessary condensate evaporation, thus realize the function without the need to draining.Air-cooler of the present invention, hot blast rate is little, and the heat exchange of condenser is even, and efficiency is high, effectively can improve the refrigeration efficiency of coolant.
Another technical problem to be solved by this invention is, provides a kind of cooling system, fully effectively cools, improve medical apparatus and instruments usefulness, extend its service life for medical apparatus and instruments disposed in the interior local thermal source orientation provides.Do not change the comfort level of patient activity area of space simultaneously, safeguard without the need to draining.
Cooling system of the present invention, comprise CT Scanner, CT Scanner comprises frame, frame is provided with shell, framework, large aperture annular bearing and rotating disk, the center of large aperture annular bearing is scanning holes center, the stator of large aperture annular bearing is by frame supported, rotating disk is fixed with CT bulb and detector assembly, CT bulb and detector assembly with rotating disk together around scanning holes central rotation, the shell of frame is also provided with frame air inlet and frame air outlet, cooling system also comprises two air-coolers as the aforementioned---main air-cooler and auxiliary air-cooler, receive controller, launch processor, bulb temperature sensor, condenser temperature sensor, detector temperature sensor and displacement transducer, main air-cooler and auxiliary air-cooler are respectively arranged with refrigeration mode and air supply pattern two kinds of mode of operations, the cold air outlet of auxiliary air-cooler accesses main air-cooler by interface and forms fan parallel-connection with the cold air outlet of main air-cooler, and be together connected with frame air inlet by cold duct, receive controller to be separately positioned in main air-cooler and auxiliary air-cooler, be arranged on main air-cooler and mutually wirelessly communicate with the reception controller of auxiliary air-cooler, condenser temperature sensor is arranged on the condenser condenses pipe exit of main air-cooler and auxiliary air-cooler, bulb temperature sensor is arranged on CT bulb, and detector temperature sensor is separately positioned on the left and right sides in detector assembly space, launching processor is arranged on the rotating disk of frame, displacement transducer is arranged on to be launched on processor.
Further, the first mutually isolated air-out passage and the second air-out passage is provided with in the cold air outlet of main air-cooler, first air-out passage is connected with the spiral case outlet air end of the Cool gas blower of main air-cooler, and the second air-out passage is connected with the spiral case outlet air end of the Cool gas blower of auxiliary air-cooler by pipeline.
Further, the regional area of frame air inlet is connected with cold duct, can enter the cold air in the cold duct of normal temperature air in the machine room of Shelf External and cooling system from frame air inlet.
Further, frame air inlet is positioned at the downside of frame, and frame air outlet is positioned at the top of frame.
Compared with prior art, the present invention is owing to have employed aforesaid air conditioner, directly the heat generating components CT bulb in the frame of CT Scanner is cooled, take away the heat of CT bulb after cold wind heat exchange and be discharged to machine room indoor by frame air outlet, taking the partial heat that CT bulb heat and air-cooler produce out of open air by the air-conditioning of machine room.The present invention has cold foot, and noise is little, and hot blast rate is little, without the need to the advantage of draining, has both improve the radiating efficiency of equipment heat source component, and has not affected again the comfort level of patient activity area of space, without the need to operator's regular maintenance.Air-cooler of the present invention, the heat produced and CT frame heat (comprising CT bulb heat) can be regulated by the air-conditioning of CT machine room, and summer is discharged by cold air-conditioning, and winter is by hot air conditioning balance.Cooling system directly to CT scanner frame refrigeration, reduces the air themperature in the scanning gantry at CT bulb and detector assembly place, improves air circular flow, thus improves the radiating efficiency of bulb, improves the applied load of bulb.
Also have, the present invention also provides one to utilize above-mentioned cooling system to carry out the adjustment of CT Scanner temperature and equalization methods, to regulate in frame while temperature can the air themperature in balanced detector assembly space, avoid the unbalanced caused detector assembly sampling error of temperature, mainly comprise the steps:
(1) when the temperature in frame is higher than the higher limit set, main air-cooler starts and is in refrigeration mode, auxiliary air-cooler starts and is in air supply pattern, room temperature wind and cold wind Homogeneous phase mixing in cold duct, the air-flow now relying on frame blower fan to be formed keeps detector assembly space temperature in frame balanced;
(2) when the temperature of CT bulb higher than the higher limit of setting and frame rotating disk is in rotation status time, auxiliary air-cooler switches to refrigeration mode by air supply pattern, and now main air-cooler and auxiliary air-cooler are refrigeration mode; Now mainly relying on the turntable rotation in frame to stir air-flow keeps detector assembly space temperature in frame balanced; When turntable rotation short time interval stops and detector assembly space temperature deviation not to exceed in setting value in limited time, main and auxiliary air-cooler still keeps refrigeration mode;
(3) prescribe a time limit when detector assembly space temperature deviation exceedes in setting value, main and auxiliary air-cooler all switches to air supply pattern, now utilizes the unheated air fast uniform detector assembly space temperature in air channel.
Further, the temperature upper limit of frame is set as 28 degrees Celsius, and the temperature range of machine room is that the temperature upper limit of 22-28 degree Celsius, CT bulb is set as 50 degrees Celsius, and the both sides space temperature deviate of detector assembly is set as 1 degree Celsius.
Compared with prior art, temperature in GANTRY can maintain in design temperature interval by the present invention, and increases air circular flow in frame, this will significantly improve the radiating efficiency of CT bulb, improve the applied load of CT bulb, extension of service life for CT tubes, has great using value.Consider the unbalanced harmful effect to CT Scanner imaging precision of detector assembly space temperature in frame simultaneously, when the both sides space temperature deviation of detector assembly exceedes setting value, main air-cooler and auxiliary air-cooler are air supply pattern simultaneously, increase the intake of frame, reduce the temperature difference at detector assembly two ends as early as possible, ensure the imaging precision of CT Scanner.The present invention can service life of significant prolongation bulb, has great economic worth.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a preferred embodiment of the present invention;
Fig. 2 is the internal structure schematic diagram of main air-cooler in Fig. 1;
Fig. 3 is the close-up schematic view of the installation principle of negative-pressure air fan, negative pressure cab and condenser in Fig. 2;
Fig. 4 is the control principle drawing that main air-cooler of the present invention accumulates condensate water circulatory evaporation.
Detailed description of the invention
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Main air-cooler of the present invention is identical with the structure of auxiliary air-cooler, is described for main air-cooler A now.Please refer to shown in Fig. 2, main air-cooler A comprise casing 1 and be arranged on compressor 2 in casing 1, exhaust fan (not shown) that vaporizer 3, condenser 4, steam export and the Cool gas blower 5 that cold air exports, also comprise and be arranged on cold air outlet 11 in casing 1 and heat outlet 12.
Vaporizer 3 and condenser about 4 are wholely set, and are positioned at directly over condenser 4.Condenser 4 is provided with condensation copper pipe 41 and radiating fin 42, and condensation copper pipe 41 is arranged in radiating fin 42.Vaporizer 3 is provided with evaporation copper 31 and conduction cooling fin 32, and evaporation copper 31 is arranged in conduction cooling fin 32.Conduction cooling fin 32 is connected with radiating fin about 42 one.
Cool gas blower 5 is arranged on the back side of vaporizer 3, and the cold wind flowing through vaporizer 3 formation is discharged by cold air outlet 11 after Cool gas blower 5.Cool gas blower 5 is centrifugal fan.The hot air flow flowing through condenser 4 formation is discharged from heat outlet 12 after exhaust fan.Fig. 2 hollow core arrow is depicted as air-flow direction signal, and after the air in indoor (machine room) enters from the left side of air-cooler, the hot-air flowing through condenser 4 is discharged from the heat outlet 12 at air-cooler top.
Shown in Fig. 2 and Fig. 3, condenser 4 sealing backside be pasted with negative pressure cab 13.On the back side of negative pressure cab 13, array is provided with multiple through hole, and on each through hole, correspondence is provided with negative-pressure air fan 6.Negative-pressure air fan 6 is mounted on the back side of negative pressure cab 13 in array, produces high negative pressure region at the back side of condenser 4.Vaporizer 3 surface is low temperature, and moisture when room air flows through vaporizer 3 in air inlet forms condensing drip on the surface of vaporizer 3, as shown in the water droplet point in Fig. 2.Condensing drip along radiating fin downstream to above condenser 4 time, the captivation F that high negative pressure region produces and water droplet gravity G combined effect, condensing drip can be forced above rearwardly to be moved by condenser 4, condensing drip will divide and fully membranization, increase the contact area with condenser radiating fin 42 and condensation copper pipe 41 surface, the residence time of condensing drip in condenser 4, thus condensing drip is fully evaporated in condenser 4, take away the partial heat of condenser 4.Multiple negative-pressure air fan 6 reasonably array layout can ensure that each condensed water can flow through high negative pressure district, the large water droplet in array upper end can divide, part water droplet enters in condenser 4, another part water droplet enters in condenser 4 in array lower end, condenser 4 internal heat exchange can be made even, improve coolant efficiency.
This negative-pressure air fan 6 array and negative pressure cab 13 are arranged has following three functions:
One: inside condenser, form high negative pressure district, local, condensing drip along radiating fin downstream to above condenser time, the captivation that high negative pressure district produces can force condensing drip in the abundant membranization of condenser surface, force condensed water residence time within the condenser, thus condensing drip is fully evaporated within the condenser, take away the partial heat of condenser simultaneously.
Two: the room air sucking outside condenser, take away remainder or the net quantity of heat of the copper pipe of condenser, the hot blast of generation is discharged outside casing by the diversion fan of heat outlet.
Three: fully can cover whole condenser air intake surface, rational array layout can ensure that each condensed water can flow through high negative pressure district.
Also be provided with condensate tray 9 and condensation water tank 7 in the below of condenser 4, condensed water first collects in condensate tray 9 and then stores and gathers in condensation water tank.Between condensate tray 9 and condensation water tank 7, be provided with water strainer 16, condensed water after pallet collects the collection hole by pallet again by after water strainer 16 in condensation water tank 7.In condensation water tank 7, be provided with water level switch 17,18,19 and water pump 8, water level switch 17,18,19 can control the start-stop of water pump 8.The top of condenser 4 is provided with porous shower 14, and porous shower 14 one end is closed, and its other end is connected with water pump 8 by water pipe 15.Negative-pressure air fan 6 is axial fan.Negative-pressure air fan 6 is pulse wide modulation DC fan, by regulating rotation speed of fan to regulate the evaporation capacity of condensed water.
Please refer to shown in Fig. 4, in condensation water tank 7, be provided with water level switch 17,18,19, respectively the upper limit, middle limit, the lower limit of controlling water level.When water level arrive in restrict water supply bit switch 18 time water pump 8 start, when water level stops lower than water pump 8 during lower limit water level switch 19, when water level arrives upper limit water level switch 17, receive controller 107 reduces negative pressure wind unit 6 wind speed according to condenser temperature 110 signal dynamics, utilize the condensed water that condensing tube heat of vaporization is unnecessary, thus realize the advantage of air-cooler without the need to draining.
Usually, the heat that air conditioner refrigerating produces is greater than cold, and usual heat takes away more than 2 times that required air quantity is cold air air quantity, and therefore hot blast wind is made an uproar higher.The condenser heat of traditional air conditioner refrigerating is taken away mainly through air mass flow, a condenser heat part of the present invention is evaporated completely by condensed water and is taken away, remainder heat is taken away by air mass flow, the negative pressure cab structure wind energy utilization efficiency of sealing is high, such hot blast air quantity can reduce, noise can obviously reduce, and condensed water is without accumulation, and refrigeration efficiency improves.
The feature of air-cooler of the present invention is: be installed on indoor, possesses installation simple and easy, not by the advantage that outdoor environment affects.When providing full-amount cold air, noise of equipment is little.Air-cooler heat extraction does not affect the zone of action of patient and operator, meets the comfort level of patient and operator.And without the need to discharging condensed water, hot blast is discharged to open air without the need to adapter road, safeguard simple.
Shown in Fig. 1 and Fig. 2, the principle schematic of a kind of cooling system of present pre-ferred embodiments, comprise CT Scanner 101, receive controller 107, launch processor 108, bulb temperature sensor 109, condenser temperature sensor 110, detector temperature sensor 114 and 115 and displacement transducer 111, also comprise two above-mentioned air-cooler---main air-cooler A and auxiliary air-cooler B.
CT Scanner 101 comprises frame, and frame is provided with shell 112, framework, large aperture annular bearing and rotating disk 102.The center of large aperture annular bearing is scanning holes center.The stator of large aperture annular bearing is by frame supported, and rotating disk 102 is casting structure.Rotating disk 102 is fixed with CT bulb 103 and detector assembly 104.CT bulb 103 and detector assembly 104 with rotating disk 102 one around scanning holes central rotation.The shell 112 of frame is also provided with frame air inlet 105 and frame air outlet 106.Main air-cooler A and auxiliary air-cooler B is respectively arranged with refrigeration mode and air supply pattern two kinds of mode of operations.
The cold air outlet 11 ' of auxiliary air-cooler B accesses main air-cooler A by interface 118 and forms fan parallel-connection with the cold air outlet 11 of main air-cooler A, and is together connected with frame air inlet 105 by cold duct 113.In the cold air outlet 11 of main air-cooler A, be provided with the first mutually isolated air-out passage 116 and the second air-out passage 117, in the cold air outlet 11 ' of auxiliary air-cooler B, be provided with the first mutually isolated air-out passage 116 ' and the second air-out passage 117 '.First air-out passage 116 of main air-cooler A is connected with the spiral case outlet air end 51 of Cool gas blower 5, and the second air-out passage 117 is connected by the spiral case outlet air end 51 ' of pipeline 119 with the Cool gas blower 5 ' of auxiliary air-cooler B.The entrance (being equivalent to the entrance of pipeline 119 ') of second air-out passage 117 ' of auxiliary air-cooler B is closed, and first air-out passage 116 ' of auxiliary air-cooler B exports wind in pipeline 119, utilizes through interface 118 cambered surface water conservancy diversion outside the spiral case of main air-cooler A to enter the second air-out passage 117.During air supply pattern, the compressor 2 and 2 ' of main air-cooler A and auxiliary air-cooler B does not work, only Cool gas blower 5 and 5 ' work, and in vaporizer side suction chamber, normal temperature air exports room temperature wind from the first air-out passage 116 and 116 '.During refrigeration mode, compressor 2 and 2 ' and Cool gas blower 5 and 5 ' work simultaneously, the first air-out passage 116 and 116 ' exports cold wind.
Receive controller 107 to be separately positioned in main air-cooler A and auxiliary air-cooler B, be arranged on main air-cooler A and mutually wirelessly communicate with the reception controller 107 of auxiliary air-cooler B.Main air-cooler A mainly determines duty according to the ambient temperature (meansigma methods of detector temperature sensor 114 and 115) in frame.Auxiliary air-cooler B mainly determines duty according to the surface temperature of bulb 103.
Condenser temperature sensor 110 is respectively equipped with, for measuring condenser temperature in the condenser condenses pipe exit of main air-cooler A and auxiliary air-cooler B.CT bulb 103 is provided with bulb temperature sensor 109, is respectively arranged with detector temperature sensor 114,115 in the left and right sides of detector assembly 104.Multi-chassis environment temperature is determined by the meansigma methods of detector temperature sensor 114 and 115.Launching processor 108 is arranged on the rotating disk 102 of frame, and displacement transducer 111 is arranged on to be launched on processor 108.Displacement transducer 111 is for judging whether rotating disk 102 rotates.In the present invention, displacement transducer 111 is arranged on and launches on processor 108.The data of bulb temperature sensor 109, detector temperature sensor 114,115 and displacement transducer 111 are by launching processor 108 sampling processing and wireless transmit.Receive the detector temperature sensor 114,115 of controller 107 wireless receiving detector assembly 104 both sides, and bulb temperature sensor 109 sampled data of displacement transducer 111 and CT bulb.
The regional area of frame air inlet 105 is connected with cold duct 113, can enter the cold air in the cold duct 113 of normal temperature air in the machine room of Shelf External and cooling system from frame air inlet 105.Frame air inlet 105 is positioned at the downside of frame, and frame air outlet 106 is positioned at the top of frame.In the present embodiment, the steam of air-cooler is directly discharged in machine room by heat outlet 12.Air-cooler heat and frame heat are discharged to open air by air conditioner in machine room.
Usually, CT Scanner is operated in air-conditioned machine room.Ambient temperature in machine room should maintain 23 degree, and usually at 23-28 degree, the relative humidity in machine room should maintain 40%, usually at 30%-60%.Machine frame inside is provided with the heat generating components such as CT bulb 103, inverter, panel, and the ambient temperature in frame is usually than the ambient temperature height 4-6 degree in machine room.
When providing cold wind to frame, space, detector assembly 104 place need keep temperature equalization.Detector assembly 104 is any temperature-sensitive components, and its detector crystal element is arranged on arc support with array way, and on support, each regional temperature needs to keep in balance, and exceedes the picture quality that certain deviation can affect CT scan.The temperature deviation of usual detector assembly 104 should be less than 2 degrees Celsius, and CT bulb 103 and detector assembly 104 are fixed on rotating disk 102, does continuous rotation motion round the scanning holes residing for human body.Patient's scanning point location and two stages of tomography/spiral, during location scanning, rotating disk 102 stops after rotating to set angle, and after location scanning completes, rotating disk 102 starts to rotate, and rotating speed is determined by checking mode.The usual current patient end of scan is before next patient location scanning, and rotating disk 102 needs to maintain longer time continuation and rotates to keep air balance.Air-cooler supply gas and flow through airduct and enter frame from the frame air inlet 105 of frame.Can air-flow be stirred when frame rotates, gas flow temperature in frame can be maintained balanced.When frame is static and after maintaining the regular hour, local cold airflow enters frame may cause temperature distributing disproportionation weighing apparatus in frame.Therefore, air-cooler need according to the rotation status of frame and the deviation adjustment mode of operation of detector assembly 104 both sides Temperature numerical to maintain the temperature equalization in frame.
Consider job requirement and the actual working environment of above-mentioned CT scan machine room and frame, the invention provides one and utilize above-mentioned cooling system to carry out the adjustment of CT Scanner temperature and equalization methods, mainly comprise the steps:
(1) when the temperature in frame is higher than the higher limit of setting, main air-cooler A starts and is in refrigeration mode, auxiliary air-cooler B starts and is in air supply pattern, room temperature wind and cold wind Homogeneous phase mixing in cold duct, the air-flow now relying on frame blower fan to be formed keeps detector assembly 104 space temperature in frame balanced; The auxiliary air-supply of air-cooler B and the cold wind of main air-cooler A mix the Air Temperature Difference reducing to enter frame air inlet 105 in cold duct 113, improve air circulation simultaneously, keep the space temperature in frame balanced.
(2) when the temperature of CT bulb 103 higher than the higher limit of setting and rotating disk 102 is in rotation status time (ignoring of short duration interval quiescent time), auxiliary air-cooler B switches to refrigeration mode by air supply pattern, now mainly relies on the rotating disk 102 Stirring air-flow in frame to keep detector assembly 104 space temperature in frame balanced; To stop and detector assembly 104 space temperature deviation not to exceed in setting value in limited time when rotating disk 102 rotates short time interval, main and auxiliary air-cooler (main air-cooler A and auxiliary air-cooler B) still keeps refrigeration mode.
(3) prescribe a time limit when detector assembly 104 space temperature deviation exceedes in setting value, main and auxiliary air-cooler A and B all switches to air supply pattern, now utilizes unheated air fast uniform detector assembly 104 space temperature in air channel.
In the present invention, the temperature upper limit that the refrigeration mode entry condition of main air-cooler A comprises frame is set as 28 degrees Celsius, the temperature range of machine room is 22-28 degree Celsius, the temperature upper limit of CT bulb 103 is set as 50 degrees Celsius, and the both sides space temperature deviate of detector assembly 104 is set as 1 degree Celsius.
Embodiment one:
The refrigeration work consumption 2500W of the compressor 2 of main air-cooler A, the refrigeration work consumption 2000W of the compressor 2 of auxiliary air-cooler B, the noise 56DB of main air-cooler A, the noise 52DB of auxiliary air-cooler B, the maximum noise 57DB of main air-cooler A and auxiliary air-cooler B.Adopt the combination set-up mode of main air-cooler A and auxiliary air-cooler B can meet high-power, low noise requirement.
The cold air outlet 11A of main air-cooler A and the cold air outlet 11B of auxiliary air-cooler B is connected in parallel on main air-cooler A side.Erecting organic frame air inlet 105 and frame air outlet 106.At frame air outlet 106, place is provided with blower fan, the hot blast in frame, is discharged to outside machine room by frame air outlet 106.At frame air inlet 105 place, room air sucks in frame together with the cold air of air-cooler.Computer room temperature is regulated at 23 degree by room conditioning.Frame is provided with launches processor 108, adopts on the cable of band colligation on rotating disk 102.Power supply takes from the power distribution box on rotating disk 102,5-24V DC.Launch processor 108 and be built-in with displacement transducer 111, whether detection rotating disk 102 rotates.The case surface of CT bulb 103 attaches bulb temperature sensor 109, detector assembly 104 left and right sides spatial placement detector temperature sensor 114 and 115.
Main air-cooler A default setting is when temperature in GANTRY is higher than 23 degree of startups, and auxiliary air-cooler B default setting is when CT bulb 103 temperature is higher than 32 degree of startups.The default setting of main air-cooler A and auxiliary air-cooler B is that detector assembly 104 both sides space temperature deviation is less than 1 degree.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an air-cooler, comprise casing and be arranged on compressor, vaporizer, condenser, exhaust fan and the Cool gas blower in described casing, also comprise setting cold air outlet on the housing and heat outlet, described vaporizer and condenser are wholely set up and down, and are positioned at directly over condenser; Described Cool gas blower is arranged on the back side of vaporizer, the cold wind flowing through the formation of described vaporizer is discharged by cold air outlet after Cool gas blower, the hot air flow flowing through the formation of described condenser is discharged from heat outlet after exhaust fan, it is characterized in that, described condenser sealing backside be pasted with negative pressure cab, on the back side of described negative pressure cab, array is provided with multiple through hole, and on described each through hole, correspondence is provided with negative-pressure air fan; Condensate tray and condensation water tank is also provided with in the below of described condenser, water level switch and water pump is provided with in described condensation water tank, the top of described condenser is provided with porous shower, and described porous shower one end is closed, and its other end is connected with water pump by water pipe.
2. air-cooler as claimed in claim 1, it is characterized in that, described condenser is provided with condensation copper pipe and radiating fin, described condensation copper pipe is arranged in radiating fin, described vaporizer is provided with evaporation copper and conduction cooling fin, described evaporation copper is arranged in conduction cooling fin, and described conduction cooling fin and radiating fin up and down one are connected.
3. air-cooler as claimed in claim 1, is characterized in that, between described condensate tray and condensation water tank, be provided with water strainer, condensed water from condensate tray collect by after water strainer to condensation water tank.
4. as the air-cooler in claims 1 to 3 as described in any one, it is characterized in that, described Cool gas blower is centrifugal fan, and described negative-pressure air fan is axial fan.
5. a cooling system, comprise CT Scanner, described CT Scanner comprises frame, described frame is provided with shell, framework is provided with in described frame, large aperture annular bearing and rotating disk, the center of described large aperture annular bearing is scanning holes center, the stator of described large aperture annular bearing is by frame supported, described rotating disk is fixed with CT bulb and detector assembly, described CT bulb and detector assembly with rotating disk together around scanning holes central rotation, the shell of described frame is also provided with frame air inlet and frame air outlet, it is characterized in that, described cooling system also comprises two main air-coolers as claimed in claim 1 and auxiliary air-cooler, receive controller, launch processor, bulb temperature sensor, condenser temperature sensor, detector temperature sensor and displacement transducer, described main air-cooler and auxiliary air-cooler are respectively arranged with refrigeration mode and air supply pattern two kinds of mode of operations, the cold air outlet of described auxiliary air-cooler accesses main air-cooler by interface and forms fan parallel-connection with the cold air outlet of main air-cooler, and be together connected with frame air inlet by cold duct, described reception controller is separately positioned in main air-cooler and auxiliary air-cooler, is arranged on described main air-cooler and mutually wirelessly communicates with the reception controller of auxiliary air-cooler, described condenser temperature sensor is arranged on the condenser condenses pipe exit of described main air-cooler and auxiliary air-cooler, described bulb temperature sensor is arranged on CT bulb, and described detector temperature sensor is separately positioned on the left and right sides of described detector assembly, described transmitting processor is arranged on the rotating disk of frame, institute's displacement sensors is arranged on to be launched on processor.
6. cooling system as claimed in claim 5, it is characterized in that, the first mutually isolated air-out passage and the second air-out passage is provided with in the cold air outlet of described main air-cooler, described first air-out passage is connected with the spiral case outlet air end of the Cool gas blower of main air-cooler, and described second air-out passage is connected with the spiral case outlet air end of the Cool gas blower of auxiliary air-cooler by pipeline.
7. cooling system as claimed in claim 5, it is characterized in that, the regional area of described frame air inlet is connected with cold duct, can enter the cold air in the cold duct of normal temperature air in the machine room of Shelf External and cooling system from described frame air inlet.
8. cooling system as claimed in claim 5, it is characterized in that, described frame air inlet is positioned at the downside of frame, and described frame air outlet is positioned at the top of frame.
9. utilize cooling system as claimed in claim 5 to carry out the adjustment of CT Scanner temperature and an equalization methods, it is characterized in that, mainly comprise the steps:
(1) when the temperature in described frame is higher than the higher limit set, described main air-cooler starts and is in refrigeration mode, described auxiliary air-cooler starts and is in air supply pattern, room temperature wind and cold wind are at cold duct Homogeneous phase mixing, and the air-flow now relying on described frame blower fan to be formed keeps detector assembly space temperature in frame balanced;
(2) when described CT bulb temperature higher than setting higher limit and frame rotating disk be in rotation status time, described auxiliary air-cooler switches to refrigeration mode by air supply pattern, and now main air-cooler and auxiliary air-cooler are refrigeration mode; Now detector assembly space temperature equilibrium in the main turntable rotation stirring air-flow maintenance frame relied in described frame; When turntable rotation short time interval stops and detector assembly space temperature deviation not to exceed in setting value in limited time, main and auxiliary air-cooler still keeps refrigeration mode;
(3) prescribe a time limit when detector assembly space temperature deviation exceedes in setting value, main and auxiliary air-cooler all switches to air supply pattern, now utilizes the unheated air fast uniform detector assembly space temperature in air channel.
10. this cooling system as claimed in claim 5 that utilizes as claimed in claim 9 carries out the adjustment of CT Scanner temperature and equalization methods, it is characterized in that, the temperature upper limit of described frame is set as 28 degrees Celsius, the temperature range of described machine room is 22-28 degree Celsius, the temperature upper limit of described CT bulb is set as 50 degrees Celsius, and the both sides space temperature deviate of described detector assembly is set as 1 degree Celsius.
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