CN2564112Y - Portable dental X-ray apparatus - Google Patents
Portable dental X-ray apparatus Download PDFInfo
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- CN2564112Y CN2564112Y CN02215351.9U CN02215351U CN2564112Y CN 2564112 Y CN2564112 Y CN 2564112Y CN 02215351 U CN02215351 U CN 02215351U CN 2564112 Y CN2564112 Y CN 2564112Y
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- 238000005070 sampling Methods 0.000 claims abstract description 7
- 238000013519 translation Methods 0.000 claims description 9
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- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 210000003128 head Anatomy 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
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- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
The utility model aims at designing a portable X ray machine, which comprises a rectifier and filter circuit which can convert the input ac voltage to the dc voltage, an electronic switch which is connected with the rectifier and filter circuit and makes chopping to the dc voltage, an inverter circuit which is connected with the electronic switch and is used to invert the dc high voltage into high-frequency high-voltage ac voltage, a high-frequency rectifier circuit which is connected with inverter circuit and is used to convert the high-frequency high-voltage ac voltage into the dc high voltage, an alternate and direct voltage converter circuit which converts the input ac voltage into the dc voltage, filament circuit which is connected with the alternate and direct voltage converter circuit so that a bulb tube filament of an X ray tube can achieve working voltage, a sampling comparison circuit which is used to close, track and control automatically the output voltage. As novel technology and process are adopted, so that the conventional X ray machines are in various structures and shapes with small size, light weight, high efficiency, convenience, practicability and portability.
Description
(1) technical field
This utility model relates to a kind of X-ray production apparatus, can provide portable medical diagnosis dental X-ray machine easy to carry for user in particular to a kind of.
(2) background technology
It is portable that existing conventional dental X-ray machine product mostly is greatly, and X ray bulb head all adopts fabricated structure basically, is about to high-tension transformer and bulb and combines, and mode of operation is the Industrial Frequency Transformer boost type.
Power frequency AC makes output voltage be adjusted to a certain desirable value by autotransformer, boosts through transformator, wraps the generation high pressure in secondary wire and offers bulb.The transformer adopting hollow is by folded the forming of the blocks of group of cold rolling silicon steel sheet.Usually, the high-voltage line bag number of turn about 100,000 circles, line below Φ 0.1mm, adopt interlayer close around.
Adopting the performance indications of self-rectifying mode and the shortcoming of production technology is clearly:
(A) because the locus that the combination type head is installed is very tight, consider the High-Voltage Insulation factor, the processing requirements of the craft sanitary of each parts is higher in the head, and laminated transformer all operations by hand basically, the existence of impurity, hand perspiration, along with the flowability of transformer oil, very easily pollute other parts.Thereby, to the PROCESS FOR TREATMENT of bulb head, transformator oil handling and evacuation have relatively high expectations time and effort consuming.
(B) silicon steel sheet transformer device structure weight is heavier, after adding the weight combinations one of transformer oil, the weight of bulb head almost accounts for quite a few of complete machine weight, and this will realize that the motility of complete machine structure and the multifarious difficulty of pattern increase greatly at the frame for movement design aspect.
(C) delivery efficiency is low, and general X-ray production apparatus performance indications are by tube voltage (KV weighs with the peak value of output voltage), tube current (mA), three parameters compositions of time of exposure (S).Because little type is weight reduction, reduced volume adopts simple self-rectifying (utilizing the bulb self character) or all wave rectification usually.This rectifier system has only a ripple or two ripples that peak value output is arranged in a sine wave period of input power, and the overwhelming majority in the output is again soft rays, and is bigger to the injury of human body skin.
(D) simplified complete machine control again in the miniaturization process,, generally reached pressure stabilization function by the manual adjustments autotransformer for the fluctuation of electrical network.Owing to be adjusted open loop, can't automatic tracking and compensating, therefore, in actual use, tend to influence exposure parameter, reduce image quality.
(3) utility model content
The purpose of this utility model provides a kind of efficient height, light weight, portable dental X-ray machine that reliability is high.
For reaching above-mentioned purpose, portable dental X-ray machine of the present utility model comprises a control chamber and a main frame, wherein:
Described control chamber comprises that the alternating voltage with input is converted to the current rectifying and wave filtering circuit of DC voltage, is characterized in that described control chamber also comprises:
Electrical switch links to each other with described current rectifying and wave filtering circuit, in order to described DC voltage is carried out copped wave; Hand over straight translation circuit, link to each other, the alternating voltage of importing is converted to DC low-voltage with the alternating voltage of described input;
One sampling comparison circuit is parallel between described inverter circuit and described X-ray tube, feeds back to described inverter circuit after comparing by X-ray tube output voltage values and the magnitude of voltage that sets;
Described main frame comprises:
The X-radiation source window is arranged at the main frame head;
One light collecting barrel, the X-radiation source window that is fixedly arranged on described main frame head links to each other;
Inverter circuit links to each other with electrical switch in the described control chamber, in order to described DC voltage is reverse into the high-frequency and high-voltage alternating voltage;
High-frequency rectification circuit links to each other with described inverter circuit, is used for described high-frequency and high-voltage alternating voltage is converted to high direct voltage;
X-ray tube links to each other with described high-frequency rectification circuit, in order to receive described high direct voltage;
Heater chain links to each other with the straight translation circuit of described friendship, makes the bulb filament in the X-ray tube obtain running voltage.
For further specifying above-mentioned purpose of the present utility model, construction features and effect,, this utility model is described in detail below with reference to accompanying drawing.
(4) description of drawings
Fig. 1 is the electric theory diagram of the portable dental X-ray machine of this utility model.
Fig. 2 is the front view of the portable dental X-ray machine of this utility model.
Fig. 3 is the vertical view of the portable dental X-ray machine of this utility model.
Fig. 4 is the left view of the portable dental X-ray machine of this utility model.
Fig. 5 is the rearview of the portable dental X-ray machine of this utility model.
(5) specific embodiment
From Fig. 1, can see the electric theory diagram of X-ray production apparatus work.The alternating voltage AC of input is by the DC voltage U of current rectifying and wave filtering circuit 14 direct rectifications the becoming 300V of a control chamber (not shown)
1, by 15 couples of DC voltage U of electrical switch of the power device in the control chamber, drive circuit composition
1Carry out copped wave, and be reverse into high-frequency and high-voltage alternating voltage U by inverter circuit 16
2,, and then produce high direct voltage U again by a high-frequency rectification circuit 17
3(its voltage controlled is built in about 70KV) offers X-ray tube 18.Carry out high direct voltage U simultaneously to output
3Carry out voltage sampling, compare, reach the high direct voltage U of closed loop from motion tracking control output by sampling comparison circuit in control chamber 19 and the magnitude of voltage that sets
3, guarantee the stable of output voltage.In addition, by in control chamber and the straight translation circuit 23 of friendship that links to each other of alternating voltage AC input, milliampere regulating circuit 20 through a heater chain 21, the filament voltage value of regulating and controlling X-ray tube 18 makes the milliampere value of X-ray tube 18 reach desirable value and tend towards stability.Because the voltage and current value independent regulation of X-ray tube 18 is independent of each other, and has increased reliability and accuracy.Simultaneously, hand over straight translation circuit 23 also to control an electronics interval timer circuit 22, the assurance time of exposure is worked as required.
For helping the auditor better to understand portable dental X-ray machine of the present utility model, what Fig. 2 was extremely shown in Figure 5 is the structural representation of portable dental X-ray machine of the present utility model.It comprises a main frame 1 and a control chamber (because of control chamber is the chest of a cubic, its structure there is no characteristics, its accompanying drawing of Therefore, omited).
Main frame 1 head is established an X-radiation source window 12 (as shown in Figure 5), and the X-radiation source window 12 that has a light collecting barrel 7 (as shown in Figure 3) to be fixedly arranged on described main frame 1 head links to each other.Main frame 1 inside is provided with x-ray source assembly 11 and high-voltage line bag 6 (as shown in Figure 4).Not only be provided with a high-frequency rectification circuit 17 and a heater chain 21 in the x-ray source assembly 11, but also be provided with X-ray tube 18, it can produce X ray, and links to each other with described high-frequency rectification circuit 17; 6 transformer actions of high-voltage line bag are the part of inverter circuit 16, and with 17 matching effects of high-frequency rectification circuit of x-ray source assembly 11.
Described control chamber comprises: a current rectifying and wave filtering circuit 14 links to each other with the alternating voltage AC of input, with the DC voltage U of alternating voltage AC rectification becoming 300V
1The electrical switch of being made up of power device, drive circuit 15 is to DC voltage U
1Carry out copped wave; One sampling comparison circuit 19 is parallel to 18 of inverter circuit 16 and X-ray tubes, feeds back to inverter circuit 16 after comparing by X-ray tube 18 output voltage values and the magnitude of voltage that sets, and guarantees the stable of output voltage; And the straight translation circuit 23 of friendship, milliampere regulating circuit 20 and the heater chain 21 that link to each other with the alternating voltage AC of input, the filament voltage value of regulating and controlling X-ray tube 18 makes X-ray tube 18 reach desirable value and stable output; In addition, hand over straight translation circuit 23 also to control an electronics interval timer circuit 22, the assurance time of exposure is worked as required.
Main frame 1 surface also is provided with a control chamber gang socket 5 that is connected with control chamber.On main frame 1 outer surface, also be provided with SBR button 8, indication luminous tube 9, start button 10 (as shown in Figure 3), and time of exposure increase and decrease adjusting key 2,4 and three figure place sign indicating numbers demonstration luminous tube 3 (as shown in Figure 2).By handing over straight translation circuit 23 and electronics interval timer circuit 22, the assurance time of exposure is worked as required.
During use, press the SBR button 8 on the main frame 1 earlier, indication luminous tube 8 (band button) is bright to be green light, shows to enter SBR.This moment, three figure place sign indicating numbers showed that luminous tube 3 shows 0.01, and the initial value of expression time of exposure is 0.01 second, and the increasing-and-decreasing key 2,4 that can regulate time of exposure as required reaches the required exposure time.Hold main frame 1 then, light collecting barrel 7 is aimed at tooth affected part position, place a photographing dental film or photographic sensor (not shown) in the tooth patient oral cavity.The start button of pinning on the main frame 1 10 is not put, and indication luminous tube 9 is bright be amber light, and buzzer rings, and the exposure beginning at this moment, is passed through light collecting barrel 7 outside radiation X rays from X-radiation source window 12.Wait to reach the time of exposure that set just now, indication luminous tube 9 amber lights go out, and buzzer sound stops, and X-radiation finishes.
Design of the present utility model has following advantage:
(1) owing to adopts the high-frequency inversion mode, and components and parts are solidified basically, as: 11 high-voltage capacitance in the x-ray source assembly, high-frequency rectification diode etc., therefore the packing forms of 13 of bulbs can be according to watt level with high-voltage inverter, rectifying component, bulb 13 adopts whole oil immersed types or part oil immersed type, this measure can increase the form variation (common bulb header structure mostly is the cylinder bodily form) of bulb 13 header structures, as this machine is the photographing unit formula, the conversion installation site can be changed into the gamma camera formula, what is more important, reduce the technology processor in the manufacturing process, had practical value.
(2) adopted: AC (220V, 50Hz) → DC (300V) → this pattern of AC (high-frequency and high-voltage) → DC (70KV high pressure), output voltage and crest voltage all are DC voltage, have improved the x-ray dose of output greatly, have avoided the damage of soft rays to human body again.Thus, under identical exposure factor, can reduce shooting time, reduce patient's irradiation dose.
(3) be provided with sampling comparison circuit 20 and follow the tracks of the output high direct voltage,, can both fast automaticly adjust, image quality is greatly improved for the variation of load or the variation of electrical network.
(4) inverter in the inverter circuit adopts ferrite and amorphous magnetic core, can reduce iron loss on the one hand, and weight reduction greatly simultaneously reduces volume.
Certainly, those of ordinary skill in the art will be appreciated that, above embodiment only is used for illustrating, and can not be as to qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of this utility model claims variation, the modification of the above embodiment.
Claims (3)
1. a portable dental X-ray machine comprises a control chamber and a main frame, wherein:
Described control chamber comprises that the alternating voltage with input is converted to the current rectifying and wave filtering circuit of DC voltage, is characterized in that described control chamber also comprises:
Electrical switch links to each other with described current rectifying and wave filtering circuit, in order to described DC voltage is carried out copped wave; Hand over straight translation circuit, link to each other, the alternating voltage of importing is converted to DC low-voltage with the alternating voltage of described input;
One sampling comparison circuit is parallel between described inverter circuit and described X-ray tube, feeds back to described inverter circuit after comparing by X-ray tube output voltage values and the magnitude of voltage that sets;
Described main frame comprises:
The X-radiation source window is arranged at the main frame head;
One light collecting barrel, the X-radiation source window that is fixedly arranged on described main frame head links to each other;
Inverter circuit links to each other with electrical switch in the described control chamber, in order to described DC voltage is reverse into the high-frequency and high-voltage alternating voltage;
High-frequency rectification circuit links to each other with described inverter circuit, is used for described high-frequency and high-voltage alternating voltage is converted to high direct voltage;
X-ray tube links to each other with described high-frequency rectification circuit, in order to receive described high direct voltage;
Heater chain links to each other with the straight translation circuit of described friendship, makes the bulb filament in the X-ray tube obtain running voltage.
2. portable dental X-ray machine as claimed in claim 1 is characterized in that, also comprises one milliampere of regulating circuit in the described control chamber, links to each other with described heater chain, in order to control the milliampere value of voltage in the described heater chain.
3. portable dental X-ray machine as claimed in claim 1 is characterized in that, also comprises an electronics interval timer circuit in the described control chamber, and is in parallel with described heater chain, in order to the time of regulating and the control exposure is required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02215351.9U CN2564112Y (en) | 2002-01-25 | 2002-01-25 | Portable dental X-ray apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02215351.9U CN2564112Y (en) | 2002-01-25 | 2002-01-25 | Portable dental X-ray apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN2564112Y true CN2564112Y (en) | 2003-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02215351.9U Expired - Fee Related CN2564112Y (en) | 2002-01-25 | 2002-01-25 | Portable dental X-ray apparatus |
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| CN (1) | CN2564112Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237805A (en) * | 2010-04-22 | 2011-11-09 | 上海碧埃荻电子科技有限公司 | Portable medical high-frequency high-voltage generator of X-ray machine |
| CN105792494A (en) * | 2014-12-22 | 2016-07-20 | 上海西门子医疗器械有限公司 | Voltage control apparatus, ray tube apparatus and voltage control method |
| CN110613464A (en) * | 2019-09-02 | 2019-12-27 | 珠海市睿影科技有限公司 | Dental X-ray machine |
| CN116602702A (en) * | 2023-06-05 | 2023-08-18 | 珠海西格医疗设备有限公司 | Dental X-ray machine based on high-frequency direct-current constant-voltage control |
-
2002
- 2002-01-25 CN CN02215351.9U patent/CN2564112Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237805A (en) * | 2010-04-22 | 2011-11-09 | 上海碧埃荻电子科技有限公司 | Portable medical high-frequency high-voltage generator of X-ray machine |
| CN105792494A (en) * | 2014-12-22 | 2016-07-20 | 上海西门子医疗器械有限公司 | Voltage control apparatus, ray tube apparatus and voltage control method |
| CN105792494B (en) * | 2014-12-22 | 2018-03-23 | 上海西门子医疗器械有限公司 | Voltage-operated device, ray tube apparatus and voltage control method |
| CN110613464A (en) * | 2019-09-02 | 2019-12-27 | 珠海市睿影科技有限公司 | Dental X-ray machine |
| CN116602702A (en) * | 2023-06-05 | 2023-08-18 | 珠海西格医疗设备有限公司 | Dental X-ray machine based on high-frequency direct-current constant-voltage control |
| CN116602702B (en) * | 2023-06-05 | 2023-11-17 | 珠海西格医疗设备有限公司 | Dental X-ray machine based on high-frequency direct-current constant-voltage control |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |