CN1026173C - Automatic frequency sweep type thermal wave physiotherapy device - Google Patents
Automatic frequency sweep type thermal wave physiotherapy device Download PDFInfo
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Abstract
An automatic frequency sweep type thermal wave physiotherapy device comprises a thermal wave emitter, a digital clock controller, a frequency spectrum display and a hydraulic control lifting mechanism.
Under the control of a digital clock controller, a thermal wave emitter can generate thermal wave radiation of segmented or swept frequency in a full infrared band, and the change of the radiation peak wavelength is displayed on a frequency spectrum display screen; the position of the thermal wave emitter in the vertical direction can be adjusted by a hydraulically controlled lifting mechanism. The device is especially suitable for clinical application because of generating broadband high-power frequency-sweeping heat waves and high degree of full-automatic machine.
Description
The present invention relates to a kind of automatic sweep-frequency type thermal wave physiotherapy appliance.
As everyone knows, the many specific bands in the electromagnetic spectrum all have heat effect in various degree, and they can be as the heat wave radiation source in principle.But technical maturation and be beneficial to the first-elected infrared physiotherapy device of health.The infrared therapy device is in leading position already in the heat wave therapy, to mankind's great role of having prevented and cured diseases.Yet, because existing infrared therapy device exists the problem of some essence to solve again, and greatly influenced the usefulness of instrument, and be difficult to rise to the degree of senior self-reacting device.
The root problem that existing infrared therapy device exists can be summarized as follows:
1. the radiated wave spectral limit is narrower,
2. the radiated wave spectral limit immobilizes,
3. irradiated area is little,
4. radiant power is low,
5. lack service life,
6. thermal response time is long,
7. be difficult for realizing automatization,
8. can not stop the leakage of harmful substance at all.
As everybody knows, infra-red radiation occupies very wide wave spectrum district, covers ten octaves at least.Usually infrared band is divided into three zones: near-infrared (0.76～3 μ m), or claim short-wave band (S); In infrared (3～6 μ m), or claim medium wave band (M); No infrared (〉=6 μ m), or claim long-wave band (L).Basic medical research shows that whole infrared band all has positive physiological action to human body.Clinical medicine has proposed the demand to all band infrared physiotherapy instrument for a long time, and just owing to technical reason, also having failed full wave infrared physiotherapy instrument comes out.
On the other hand, can be used for preventing and curing diseases, but can not answer " control what disease and need what frequency or wave band actually " this problem definitely although people know whole infrared band.Therefore, the narrow and changeless physiotherapeutic instruments of radiated wave spectral limit will limit its scope of application greatly.
Existing infrared therapy apparatus (as Chinese patent: 87202739U, 87101724A, 85100538A, 87103603A, 86206972,87107654) does not all possess automatic frequency sweep mechanism, in addition the little (≤150cm of swept area though differ from one another
2) and radiant power also low (≤500W), for large tracts of land affected part (as burn and scald) treatment and for needing though apply very near the occasion of affected part treatment.
In addition, have the heat wave radiation source in the infrared therapy device now, all comprise the basic structure of " ceramic matrix+infrared coating ".The hierarchy of this non-integral and the character of related material are to cause existing infrared therapy device to have the reason of many shortcomings.Ceramic material belongs to insulator, because the restriction of its inherent character, and the thermal response time of this class infrared emitter all long (a few minutes to tens kind), or say that thermal inertia is big.Therefore, this class ceramic heating element can not synchronously be followed the variation of control signal, so adopt the physiotherapy table of this class ceramic heating element also to be difficult to improve its automaticity and the various modulation intelligences of loading.
It is important to emphasize that ceramic base build infrared emitter like this no matter its profile is a tubulose, or tabular, in order to improve its infra-red radiation ability, has almost adopted multiple oxide as coating material bar none.The oxide (s) coating material that some of them are commonly used, as chromium oxide, manganese oxide, cobalt oxide etc., be proved to be to health have adverse side effect (the science magazine, 1990.No.8., p38-39).So the heat wave generating means that adopts the infrared emitter of this class " ceramic matrix+infrared coating " type structure to use as physical therapy is not ideal selection scheme.
At last, the ceramic mould matrix also has a significant disadvantages, and low, the easy breakage of mechanical strength, that it bears the thermal shock ability is also lower, very easily causes the crack because of the thermal stress effect in the heating and cooling process or bursts.
Purpose of the present invention is according to the heat radiation theory among the physics, designs the device of a kind of energy subrane or full infrared band automatic frequency sweep output wideband heat wave.It has overcome the above-mentioned deficiency of existing infrared therapy apparatus.Require radiant power big (peak power output 〉=1000W), the big (〉=450cm of irradiated area
2), long service life (〉=15,000h), thermal response time is short≤5g), be suitable for automatic program control utilization; Also require infrared emitter to have overall structure, promptly not stratified, do not add coating, like this with not only simplifying the emitter processing technology greatly (only needs machining yet, and do not need to spray, deposit or other chemical technologies), and the leakage of fundamentally stopping harmful substance.Put it briefly, the present invention will propose a kind of brand-new practical technique scheme that can overcome above-mentioned " ceramic mould matrix " all shortcomings of heater simultaneously.
As mentioned above, many shortcomings of existing infrared therapy device all are to adopt due to " ceramic matrix+infrared coating " this basic structure because of it.Therefore, for fear of these shortcomings, also just must start with from the basic structure that changes the heat wave generator.
As everybody knows, in heat conductivility, thermal response time (thermal inertia), mechanism's intensity, bear aspects such as thermal shock ability and machinability, metal alloy compositions all obviously is better than ceramic insulating material.This expects us, and giving up the ceramic mould matrix fully and choosing metal alloy compositions is desirable as the heat wave emitter.But, still have two important problem to solve here: the one, how to guarantee that selected metal alloy compositions emitter has needed all-wave infrared emission performance; The 2nd, apply excitation (owing to the resistance of metal alloy compositions is minimum, directly applying electric excitation-no matter be unidirectional current or alternating current, is unallowed at all) how for the metal alloy compositions emitter.
From heat radiation theory (Zhao Kai Hua Zhongxi China optics volume two BJ University Press 1984, P.258-276) as can be known, object (the comprising metal alloy certainly) general features that heat radiation has is that along with the raising of temperature, (1) radiating general power increases; (2) distribution of intensity in spectrum shifted to shortwave by long wave, or says the wavelength that peak wavelength λ m(is corresponding with the energy maximum) raise with temperature and move to shortwave.
The heat radiation theory is also told us, radiance ε=1 of ideal black-body (or being called for short black matrix), and the ε value of all actual objects is all less than 1.If the emissivity values ε of actual object and Wavelength-independent (even like this in a certain wave band), still the formula of describing black matrix in the available physical is analyzed the radiation characteristic of actual object, and the error of bringing thus is unessential for the essential aspect of understanding things.Black body radiation is deferred to following two rules;
(1) radiant power R
T(being the radiant power of per surface area) is directly proportional with the biquadratic of absolute temperature, promptly
R
T＝εσT
4（1）
σ=5.67 * 10 in the formula (1)
-12W/cm
2K
4For black matrix, ε=1; For actual object, ε＜1.
(2) radiation peak wavelength X m and absolute temperature are inversely proportional to, promptly
λmT＝b （2）
B=2898 μ mK in the formula (2).
According to formula (1) and formula (2), can calculate this adjacent R of radiation of black matrix under arbitrary temperature
TWith radiation peak wavelength X m, as shown in Table 1 and Table 2.These data are important evidence of design heat wave emitter of the present invention.λ m-t is plotted curve, as shown in Figure 1.
Black body radiation ability R under table 1 different temperatures
T
T（K） t（℃） R
T（W/cm
2）
273 0 3.166×10
-2
280 7 3.503×10
-2
290 17 4.031×10
-2
320 47 5.976×10
-2
370 97 0.1068
420 147 0.1774
470 197 0.2781
520 247 0.4167
570 297 0.6016
620 347 0.8422
670 397 1.149
720 447 1.532
770 497 2.004
820 547 2.577
870 597 3.265
920 647 4.083
970 697 5.046
1000 747 5.699
1050 797 6.928
1100 847 8.345
1150 897 9.968
1200 947 1.182×10
1250 997 1.392×10
From the λ m-t curve of Fig. 1 as can be known, in 0～200 ℃ of temperature range, radiation peak wavelength X m 〉=6 μ m promptly is positioned at far infrared scope (or claiming long-wave band L); In 200～700 ℃ of temperature ranges, λ m is 3～6 μ m, promptly is arranged in infra-red range (or claiming medium wave band M), and temperature is higher than 700 ℃, and radiation peak wavelength X m≤3 μ m promptly is near infrared range (or claiming short-wave band S).
Many metal alloy compositions all have higher emissivity values ε in wider temperature range, as strong oxidation steel (50～500 ℃ of ε=0.88～0.98); Coarse oxidation steel (40～370 ℃ of ε=0.94～0.97); Coarse plane steel (〉=50 ℃ of ε=0.95～0.98); Nichrome (52～1035 ℃ of ε=0.64～0.76).
If emitter design is become discoid (than tubulose or bar shaped is tabular can more efficiently and uniformly utilize irradiating surface), and establishes diameter D=24cm, then disk area (irradiated area) S=1/4 * π D
2=452cm
2If ε=0.5(is from the ε value of above-named metal alloy compositions as can be known, ε=0.5th, easy to reach), the total radiation power P(that can calculate thus under the different temperatures sees Table 3 data):
P＝SεσT
4（3）
Table 2 λ m is with variation of temperature
t℃ T（K） λm（μm）
0 273 10.62
10 283 10.24
20 293 9.89
50 323 8.97
100 373 7.77
150 423 6.85
200 473 6.13
250 523 5.54
300 573 5.06
350 623 4.65
400 673 4.31
450 723 4.01
500 773 3.75
550 823 3.52
600 873 3.32
650 923 3.14
700 973 2.83
750 1023 2.83
800 1073 2.70
850 1123 2.58
900 1173 2.47
950 1223 2.37
1000 1273 2.28
Table 3 total radiation power P is with variation of temperature
t（℃） T（K） P（W）
47 320 14
97 370 24
197 470 63
297 570 136
397 670 260
497 770 453
597 870 738
697 970 1140
727 1000 1288
777 1050 1566
827 1100 1886
Table 3 calculating data shows, metal alloy compositions for all-wave emissivity values moderate (ε 〉=0.5), choose the swept area (diameter is the disk of 24cm) of suitable size, under not too high temperature (about 700 ℃), just can obtain above kilowatt total radiation power.
For the metal alloy emitter is energized into proper temperature rapidly, can in the metal alloy body, excite the method for revolving the ripple eddy current by the radiating electromagnetic field of the higher-order of oscillation.As everybody knows, in many cases, metal alloy compositions revolves the ripple eddy current because of inside produces and generates heat, and is a kind of deleterious phenomenon (as the used iron core of transformator, should as far as possible reduce this eddy-current heating loss).And in the present invention, exactly can utilize electromagnetic field to revolve the ripple eddy current, thereby obtain required broad-frequency high-power heat wave radiation at metal alloy body internal motivation.Ferrimagnet is easy to generate a kind of material of eddy current just.The temperature of metal alloy emitter just depends on the intensity of excitation electromagnetic field, and the intensity of excitation electromagnetic field depends on the intensity of the high-frequency electrical vibration that produces radiation field and the time of actual excitation metal alloy emitter.Therefore, by the intensity and the actuation duration of the control higher-order of oscillation, just can directly control the temperature of metal alloy emitter, thereby also just control radiating peak wavelength and intensity.Meanwhile, surface temperature and this variation of temperature of demonstration directly perceived by detecting the metal alloy emitter have also just shown dynamic spectrum (the relative variation of radiation peak wavelength).
The above analysis, can select all-wave emissivity values higher (ε 〉=0.6), the ferromagnetic material of fusing point higher (〉=1000 ℃) is as emitter, be coupling in that its internal excitation is revolved the ripple eddy current and heating rapidly by electromagnetic field of high frequency induction, and, realize the purpose of automatic frequency sweep thus by controlling higher-order of oscillation current's intensity and changing the emitter temperature action time.
The metal alloy compositions that can satisfy above-mentioned requirements is a lot, as the top nickel-chrome alloy steel of having mentioned, strong oxidation steel, coarse oxidation steel, coarse plane steel etc.
Below in conjunction with accompanying drawing 2～5, further set forth the principle of the automatic frequency sweep that the present invention proposes and the technical scheme of employing.
Fig. 2 is the functional-block diagram of automatic sweep-frequency type thermal wave physiotherapy appliance.
Fig. 3 is heat wave transmitter unit in the automatic sweep-frequency type thermal wave physiotherapy appliance, Digital Clock Control device and the unitary electrical schematic diagram of spectrum display.
Fig. 4 is the shape assumption diagram of an embodiment of automatic sweep-frequency type thermal wave physiotherapy appliance.
Figure is the schematic diagram of the elevating mechanism of the hydraulic control among Fig. 4.
Identical in the accompanying drawings parts come labelling with identical label.
As can be seen from Figure 2, the Digital Clock Control device comprises electronic digital clock (15) and control corresponding operated key (14).The Digital Clock Control device can adopt integrated digital clock circuit (as MM5402, MM5406, MM5371 etc.) assembling, also has to comprise digital clock and display can be for selecting for use at interior integrated circuit modules (as MA1002B, MA1010A, C, E, G etc.).No matter which kind of physical circuit form of employing, this installs the requirement of described Digital Clock Control device and possesses following basic function: (a) real-time clocking capability; (b) timing function (being equivalent to alarm clock function) in any moment in 24 hours; (c) maximum preset time is 59 minutes the function of countdowning (being equivalent to silent clocking capability); (d) timing Presentation Function; (e) Presentation Function of countdowning; (f) time correction function.These basic functions can be selected by control corresponding operated key (14).
The heat wave transmitter unit be this device core partly, infra-red radiation dish (6) that it is made by mode of operation selector (1) gate generator (2), gate high frequency generator (3), high frequency power amplifier (4), metal alloy compositions (as nichrome) and temperature sensor (7) formation.Selecting the working method of heat wave transmitter unit by mode of operation selector (1) is timing mode (promptly reach and preset Auto Power On constantly), or the mode of countdowning (promptly starting shooting the shutdown voluntarily that finishes of countdowning immediately) in case preset the section of countdowning.This dual mode is the same in essence, and different is that for the timing working mode, by presetting Auto Power On constantly, shutdown then need be carried out a manual operation again; For the working method of countdowning, shutdown is to realize automatically.Gate generator (2) is the standard square-wave pulse generator that is made of ic timer.If its cycle is T, output pulse width is that tw, pulse resting stage are ts, so, tw+ts=T, tw can regulate, but tw≤T/2.The output square-wave pulse of gate generator (2) is as the control impuls of gate high frequency generator (3).Therefore, only in control impuls width tw action time, gate high frequency generator (3) just can produce sinewave output, and its frequency of oscillation is chosen in 20～50KHz scope.The final stage of high frequency power amplifier (4) is made of VDMOS power tube or ambipolar high frequency power transistor.The sine wave of gate high frequency generator (3) output is amplified to enough level (the peak pulse electric current surpasses 10A) through high frequency power amplifier (4).Load inductance (5) the double as electromagnetic field inducing coupling coil of high frequency power amplifier (4) for improving coupling efficiency, follows infra-red radiation dish (6) closely and installs.Therefore, the high frequency electric of high frequency power amplifier (4) output will be by electromagnetic field couples, at infra-red radiation dish (6) underexcitation faradic current-revolve the ripple eddy current, the temperature of infra-red radiation dish is risen rapidly.Radiation dish temperature rate-of-rise and the maximum temperature that can reach, except that depending on the material behavior of radiation dish own, the width that will directly depend on the output square-wave pulse of gate generator (2), this width tw is bigger, effective ON time of gate high frequency generator (3) is also longer, the average exciting current that high frequency power amplifier (4) provides is also stronger, and infra-red radiation dish (6) also can reach higher temperature sooner, and vice versa.So the output square-wave pulse width tw of adjustment doors pulse generator (2) in fact is exactly to regulate the radiating peak value ripple of heat wave emitter to go into the adjustment of λ m(wave band).Obviously, in the output square-wave pulse width tw of gate generator (2), the temperature of infra-red radiation dish (6) progressively rises and reaches a certain stationary value (this process changes to short-wave band from long-wave band corresponding to the radiation peak wavelength).In the resting stage ts of the output square-wave pulse of gate generator (2), gate high frequency generator (3) will quit work, thereby also no-output electric current of high frequency power amplifier (4).Corresponding, the temperature of infra-red radiation dish will descend gradually (this process changes to long-wave band from short-wave band corresponding to the radiation peak wavelength).So in the one-period time T of gate generator (2), with take place infra-red radiation from the long-wave band to the short-wave band, twice frequency sweep from the short-wave band to the long-wave band again.Along with the cyclically-varying of gate generator (2) output square wave, infra-red radiation dish (6) is the circulation frequency sweep, thereby constantly produces the infrared ray heat wave of peak wavelength and Strength Changes.It is important to emphasize under arbitrary temperature, except that the peak wavelength radiation, radiation is all arranged in its both sides.Under higher temperature (〉=400 ℃), non-peak of radiation still has considerable intensity especially, so radiation dish (6) generation is full-wave band infrared radiation.
Temperature sensor (7) is 20～1 by operating temperature range, 000 ℃ platinum critesistor constitutes, surface temperature with its record infra-red radiation dish (6) changes, and variations in temperature is transformed to voltage signal (in fact this signal is exactly that the relative level of radiation peak wavelength changes), after peak wavelength level detection amplifier (8) amplifies, send into ten section ten level led (LED) display (13).Clock generator (9), trigger gate (10), decade computer (11) and decoder (12) constitute the standard scan generator.
Fig. 3 is the circuit theory diagrams of an embodiment formant of automatic sweep-frequency type thermal wave physiotherapy appliance.IC1 series electron digital clock modular circuit (MA1010A contains 4 light-emitting diode displays).K1～K6 is the control operation key, be followed successively by regularly select, regularly show, during fast school, slowly during the school, demonstrations of countdowning, second demonstration.IC2 is the double input end nor gate.The pin one of IC1 and 2 joins with the timing output 7 of IC1 and the outfan 9 of countdowning respectively.Transistor T 1 and integrated timer IC3(555 type) the formation gate generator.When selected timing mode or when countdowning mode, 3 ends of IC2 all are output low levels, thereby T1 ends, and 4 ends of IC3 are high level, and this moment is from the positive square-wave pulse of 3 ends output of IC3.This square-wave pulse width tw depends on R1 and C1, and can regulate (wave band adjustment) by potentiometer R1 continuously.Transistor T 2, T3 and unijunction transistor (UJT) T4 constitutes the gate high frequency generator.T2 and T3 form electrical switch, only during the 3 ends output positive pulse of IC3 (tw), and just conducting of T2 and T3, so connection T4+the 15V supply access, the sine-wave oscillation frequency that T4 produces depends on L1, C2 and R2, is limited in 20～50KHz scope, and can regulates by R2.In the resting stage ts of IC3 output square-wave pulse, the electrical switch cut-out T4 that T2 and T3 form+the 15V power path, thereby the T4 failure of oscillation.So T4 only in gate generator is exported positive square-wave pulse width time tw, just has sine-wave oscillation output.In other words, IC3 output square-wave pulse width has determined the length of T4 sine wave output string fully.Transistor T 5 and T6 form the prestage of high frequency power amplifier, and their are sent to by T7(VMOSMTM6N60 after the sine wave of T4 output is amplified again) the high frequency power amplifier final stage that constitutes.T7 is the high-frequency high-power pipe, and its load is an inductance L 2, and the pulse current of this pipe switch surpasses 10A.Be that the transient peak voltage prevent to cause because of inductance damages device, require T7 breakdown voltage must (Vds of T7 〉=600V), R3 be a current-limiting resistance times over power supply voltage.Must point out emphatically, L2 is not only the load of T7, also provides the inductive coupler coils of infra-red radiation dish electromagnetic excitation.For improving this coupling efficiency, the installation site of L2 must follow closely after the infra-red radiation dish.Critesistor Rt(CW1 type) temperature range is 20～1000 ℃, and it is transformed into change in voltage with the variations in temperature of infra-red radiation dish, is sent to the integrated operational amplifier IC4 of Gain Adjustable (passing through R4) then.Because in fact the variations in temperature of infra-red radiation dish has reflected the radiation peak wavelength change, so in fact IC4 is exactly the detecting amplifier that radiation peak wavelength level changes relatively.The output voltage of IC4 is sent to the left end (anode tap of LED) of ten sections ten grades of light-emitting diode displays.By with LED parallel resistor (from left to right, the resistance value incremental classification), LED is listed as voltage-sensitive (J. Ma Kusi electronic circuit complete works of Vo1.3., 1985).Standard scan generator by clock generator (IC5 555 types), trigger gate (IC6 7400), decade computer (IC7 7490) and decoder (IC8 7441) formation, export ten road gate pulses, successively to scanning, so the relative variation of peak wavelength level shows with " optical wand " form by each row LED pressure sensitive stripline runs.The scan rate that shows can be regulated (1～20 row/second) with R5, shows as not needing, and K7 can be placed the off position.
Below in conjunction with Fig. 3, further set forth the operation principle of above-mentioned sweep generator.IC8(7441 among Fig. 3) is 4～10 line decoders (10 select 1).Its input (3,6,7,4) is 4 binary-coded decimal inputs.As everyone knows, 4 binary-coded decimal correspondences 16 kinds of states, promptly decimal number 0～15.We are needed only to be 0～9, and remaining (promptly 10～15) is invalid input.Corresponding invalid input state, all outfans (0～9) IC8(7441), promptly the cathode terminal of LED row is all high level, so all not conductings of any string LED (not working).When any string LED is selected (corresponding to BCD input 0～9), corresponding therewith IC8(7441) a certain outfan (end in 0～9) then be low level, so the LED possibility conducting illuminated light in should row.With LED parallel resistor resistance, increase progressively step by step from left to right as mentioned above, so the dividing potential drop on each LED also increases progressively from left to right step by step.Along with the variation of input (LED row anode taps) voltage, LED will conducting be luminous one by one from right-to-left, and input voltage is higher, and the luminous LED number of conducting also the more.So in fact the number of the luminous LED number of conducting in each row has reflected the height (being the height of radiation peak wavelength level) of input voltage.
Along with IC8(7441) the 10 row LED that join of input (C, D) the continuous variation of state is with IC8(7441 for A, B) outfan (0～9) selected (being scanned) successively.IC7(7490) be decade computer, produce the needed BCD control impuls of decoder (IC87441) by it.IC4 is the clock generator that standard time base circuit 555 types constitute, owing to produce the required count pulse of decade computer IC7.The frequency of this count pulse high more (cycle is short more) is finished the time of 0～9 row LED whole run-downs also shortly more, and in other words, the reading scan rate can be adjusted by the frequency of oscillation (or cycle of oscillation) of adjusting IC5.By this simple scanning method, the variation of input voltage is also shown on time shaft.
Fig. 4 is the shape assumption diagram of the embodiment of physical therapy device that proposes of the present invention.It is assembled in the most of circuit (not containing high frequency power amplifier load inductance, infra-red radiation dish and temperature sensor) in Fig. 2 and the described Digital Clock Control device of Fig. 3, spectrum display unit and the heat wave transmitter unit in the control chamber (32).High frequency power amplifier load inductance (5), infra-red radiation dish (6) and temperature sensor (7) are installed in the metal skirt (emitter guard shield) (26).This guard shield prevents that in addition the electromagnetic field of high frequency is to external leakage and the function that makes the infrared thermal wave directed radiation except that playing general protection inner member.(34) and (35) be respectively big transverse arm and little transverse arm, control chamber (32) places the two ends of transverse arm respectively with the infra-red radiation dish (6) of band guard shield.(23), (24), (25) are the indication lamppost, (27) be emitter guard shield locking handwheel, (28) are little transverse arm locking handwheel, and (29) are big transverse arm locking handwheel, (30) be lifting support locking handwheel, (33) are lifting support (being equivalent to piston).
Now referring to Fig. 5, the elevating mechanism of hydraulic control comprises: direction switch (K8 and K9), motor (16), hydraulic pump (17), check-valves (18), electromagnetic valve (19), coil (20), fuel tank (21), piston cylinder (22) and lifting support (being equivalent to piston) (33).Wherein direction switch K8 and K9 are installed on the panel of control chamber (32), and remainder is installed in the pedestal (31) that links to each other with piston cylinder (22).
Electromagnetic valve (19) is a two position three-way valve, and whether its duty has electric current to pass through decision (promptly by K8 and K9 control) by coil (20) fully.When pressing K switch 8 (at this moment, K9 disconnects, electromagnetic valve (19) is cut off to the path of fuel tank), hydraulic pump (17) is by the oil suction from fuel tank (21) of motor (16) driven rotary, from the pressure oil of hydraulic pump (17) flow through end can valve (18) and electromagnetic valve (19) enter the bottom of piston cylinder (22), promote lifting support (33) rising.When pressing K switch 9 (K8 then disconnects), the loop of coil (20) is connected, so electromagnetic valve (19) is opened to the path of fuel tank, piston cylinder (22) inner fluid flows back in the fuel tank (21) through electromagnetic valve (19), and lifting support (33) descends.Because of check-valves (18) is a check valve, fluid can not flow backwards through it.The elevating mechanism of this hydraulic control, can realize easily the infra-red radiation dish the step-less adjustment of vertical direction position and work balance, simple to operate, be convenient to realize automatization.
Put it briefly, the physical therapy device that the present invention proposes has following characteristics:
The radiated wave spectral limit wide (comprise near, in, far infrared band)
2. subrane or full infrared band automatic frequency sweep; Dynamic spectrum intuitively shows
Electromagnetic field inducing coupling excitation, thermal response time short (≤5s)
4. the big (〉=450cm of irradiated area2); Radiant power is big (maximum above 1,000W)
5. adopt the metal alloy emitter, do not have a hierarchy, as not adding coating, not only technology is simple and the life-span grow (〉=15,000h), and the radiation of fundamentally stopping harmful substance.
6. many kinds of timing modes, hydraulic control lifting easily are automated and load information.
Must point out emphatically, the present invention not only provides a kind of multiple functional and higher physical therapy device of automaticity, and its scope of application can also expand scientific research and other industrial or agricultural departments (such as research optical device characteristic, breeding, sterilization, baking, heating etc.) to.
Claims (6)
1, a kind of automatic sweep-frequency type thermal wave physiotherapy appliance, it comprises the elevating mechanism of heat wave emitter, sweep generator, Digital Clock Control device, spectrum display and hydraulic control, it is characterized in that also comprising infra-red radiation dish (6), temperature sensor (7) and the mode of operation selector (1) made by ferrimagnet.
2, thermal wave physiotherapy appliance according to claim 1 is characterized in that above-mentioned infra-red radiation dish (6) has discoid overall structure.
3, thermal wave physiotherapy appliance according to claim 1 is characterized in that above-mentioned infra-red radiation dish (6) is made of ferromagnetic materials such as nickel-chrome alloy steel or coarse plane steel.
4, thermal wave physiotherapy appliance according to claim 1 is characterized in that above-mentioned infra-red radiation dish (6) is installed in the metal skirt.
5, thermal wave physiotherapy appliance according to claim 1 is characterized in that above-mentioned mode of operation selector (1) is made of the dual input nor gate.
6, thermal wave physiotherapy appliance according to claim 1 is characterized in that said temperature pick off (7) is made of the platinum critesistor of operating temperature up to 1,000 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92110901 CN1026173C (en) | 1992-09-24 | 1992-09-24 | Automatic frequency sweep type thermal wave physiotherapy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92110901 CN1026173C (en) | 1992-09-24 | 1992-09-24 | Automatic frequency sweep type thermal wave physiotherapy device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1073369A CN1073369A (en) | 1993-06-23 |
| CN1026173C true CN1026173C (en) | 1994-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92110901 Expired - Fee Related CN1026173C (en) | 1992-09-24 | 1992-09-24 | Automatic frequency sweep type thermal wave physiotherapy device |
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| Country | Link |
|---|---|
| CN (1) | CN1026173C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9739661B2 (en) * | 2015-06-30 | 2017-08-22 | Agilent Technologies, Inc. | Infrared imaging system with automatic referencing |
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1992
- 1992-09-24 CN CN 92110901 patent/CN1026173C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1073369A (en) | 1993-06-23 |
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