CN2200163Y - Computer real-time controlling vessel refrigeration machine air distributor - Google Patents
Computer real-time controlling vessel refrigeration machine air distributor Download PDFInfo
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- CN2200163Y CN2200163Y CN 94216702 CN94216702U CN2200163Y CN 2200163 Y CN2200163 Y CN 2200163Y CN 94216702 CN94216702 CN 94216702 CN 94216702 U CN94216702 U CN 94216702U CN 2200163 Y CN2200163 Y CN 2200163Y
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Abstract
The utility model discloses a computer real-time controlling vessel refrigeration machine air distributor which is composed of a stabilized voltage power supply circuit, a control circuit, and a high voltage circuit. The computer real-time controlling vessel refrigeration machine air distributor mainly adopts a stabilized voltage power supply integrated package to provide constant voltage with +12V and +5V, and model numbers are L7821CV and 7805CV. The computer real-time controlling vessel refrigeration machine air distributor adopts four-2 input and gates to realize a logical and function, and the model number is 74LS08. The computer real-time controlling vessel refrigeration machine air distributor adopts an inverter to realize a logical not function. The utility model adopts six groups of reversed phase drivers 7406 for open-collector output, the model number is 7416, six inverters 04 series, 05 series, etc. The utility model realizes the stepless regulation for the frequency of a pressure wave of a vessel refrigeration machine. The duty ratio and the phase difference of the pressure wave can be smartly adjusted. The utility model lays the foundation for an experiment for the vessel refrigeration machine to obtain an ideal limit temperature and a refrigerating capacity.
Description
The utility model relates to the air distributing device of refrigeration machine, especially relates to microcomputer and controls the vascular refrigerator air distributing device in real time.
Vascular refrigerator is movement-less part at low temperatures, can develop to miniaturization, height reliability direction, has broad application prospects.But our used vascular refrigerator was connected by rotary valve with compressor in the past, and vascular refrigerator is subjected to the restriction of press tolerance and pressure ratio very big.Propose recently vascular refrigerator and be connected with magnetic valve with compressor, valve mechanism is then depended in its pressure supply, and refrigerating capacity is not subjected to the restriction of press capacity, even can many press parallel connections, for the increase refrigerating capacity has been created condition.Especially four valve vascular refrigerators, in the vascular hot junction not replace mobile piston with the valve mechanism of air reservoir, the correct phase of gas displacer is improved by four valve systems in the vascular, by correct by-pass valve control switch time, can obtain the highest refrigerating capacity, realize thermodynamic cycle near G-M refrigeration machine indicator card.
The purpose of this utility model provides a kind of microcomputer and controls the vascular refrigerator air distributing device in real time.
Be illustrated below in conjunction with accompanying drawing.
Fig. 1 is that microcomputer is controlled vascular refrigerator air distributing device circuit theory diagrams in real time;
Fig. 2 is the control program block diagram that microcomputer is controlled the vascular refrigerator air distributing device in real time.
Computer real-time controlling vessel refrigeration machine air distributor, by voltage-stabilized power supply 1, control circuit 2 and high-tension circuit 3 three parts form. Wherein voltage-stabilized power supply circuit is: voltage-stabilized power supply integrated package V 13. pin, capacitor C1Positive pole, light emitting diode D11Anodal continuous, V12. pin, capacitor C1Negative pole, resistance R11One end links to each other and ground connection, resistance R11The other end and light emitting diode D11Negative pole links to each other, voltage-stabilized power supply integrated package V 23. pin, capacitor C2Positive pole, light emitting diode D12Positive pole link to each other V22. pin, capacitor C2Negative pole, resistance R12One end, capacitor C3Negative pole, silicon stack B is anodal to link to each other and ground connection resistance R12The other end and light emitting diode D12Negative pole links to each other, V1，V
21. pin, capacitor C3Positive pole, silicon stack B negative pole links to each other, and the low-voltage coil that silicon stack exchanges end and transformer T joins, and the high-tension coil of transformer T meets attaching plug P3 Voltage-stabilized power supply integrated package V wherein1And V2Provide+12V and+constant voltage of 5V, model is L7812CV and 7805CV or MC7812T, AN7812 and MC7805T. Adopt dielectric capacitance C1、C
2、C
3Voltage stabilizing, its value are 470 μ/25V. Its value of silicon stack B is 50V/1A, transformer T, and it is worth not 15V/5W.
Control circuit is: in the voltage-stabilized power supply circuit, and voltage-stabilized power supply integrated package V 13. pin respectively with 4 resistance R1One end links to each other, resistance R1The other end connect respectively the positive pole (1. pin) of the solid-state relay S in the high-tension circuit, the negative pole of solid-state relay S (2. pin) respectively with 4 phase inverter U22., 4., 6., 8. pin links to each other, 25 needle printer interface P1{。##.##1},
、
, pin ground connection, P12., 3., 4., 5. pin respectively with four-2 the input with the door U11., 4., 9.,
Pin links to each other, P1 
Pin and the master switch K of system one end, U12., 5., 10.,
Pin, 4 resistance R1The other end links to each other, resistance R1Other end ground connection, U 1③、⑥、⑧、
Pin is respectively with U21., 3., 5., 9. link to each other, and connecting resistance R respectively2An end, resistance R2The other end and light emitting diode anodally link to each other light emitting diode minus earth, V in another termination voltage-stabilized power supply circuit of K switch 23. pin. Wherein adopt four-2 inputs and door U1Realize that logical AND function model is 74LS08, also can adopt 08 series (7408,74H08,74S08), 09 series (7409,74S09,74L09). Adopt phase inverter U2Realize the logic NOT function, we are with six groups of rp-drives 7406 of open collector output, and other model is such as 7416, hex inverter 04 series (7404,74H04,74S04,74LS04), hex inverter (OC) 05 series (7405,74H05,74S05,74LS05), hex inverter (schmidt trigger), 14 series (7414,74LS14) also can use, perhaps connect high level with another pin of NAND gate, have 00,01,03,132 series; Nor gate, another pin connects low level, 02,28,33 series. Be connected on U1On four 1K resistance R1Play balanced action, respectively sending and receiving optical diode D1The 1K resistance R2Play the current-limiting protection effect, connect+resistance R of 50 Ω of 12V power supply3Play current-limiting protection solid-state relay S.
High-tension circuit is: the resistance R of control circuit
3The other end and solid-state relay S positive pole (1. pin), U
22., 4., 6., 8. pin connects the negative pole (2. pin) of S respectively, S 4. pin links to each other with fuse one end, fuse other end combination hub P
21. pin connects high voltage source after the 3. pin of S is continuous, and P 2. pin connects high voltage source after linking to each other.Adopt solid-state relay, its value also can adopt TWH8741 switch integrated package for 220V/2A realizes the adhesive of low tension signal triggering high-tension electricity magnetic switch, can eliminate time-delay substantially.
The computer-controlled program of this device is as follows:
Program begins, and is provided with to interrupt constantly promptly at first call function getvect () save routine entry address, calls setvect () function again and deposits the interrupt service routine address in interrupt vector table.Call inir_scr () function and carry out the screen initialization, call init_8253 () function and carry out 8253 initialization, call the clear LPT of clear_LPT1 () function, call init_count () function the timer initialization, call keytouch () and read hot key instruction, F
1Bring into operation, wait for the hot key instruction; Change as operating condition, judgement is increment or depreciation, and whether increment arrives the upper limit, does not continue increment, is then not continue, and waits for the hot key instruction; Whether depreciation arrives lower limit, does not continue depreciation, is then not continue, and waits for the hot key instruction; F
2Stop operation, the recovery system setting is promptly called resume_8253 () function and is recovered 8253, calls setvct () function and deposits the program entry address in interrupt vector table, calls the clear LPT of clear_LPT1 () function, call clear_scr () function cls, EP (end of program).
The experimental provision of real time computer control vascular refrigerator intake and exhaust, realized the step-less adjustment of vascular refrigerator pressure wave frequencies, and can adjust the duty phase difference of pressure wave when neatly, limiting temperature and the system cool amount desirable for the experiment acquisition of vascular refrigerator lay the foundation.The air distributing device that adopts real time computer control is owing to hardware configuration such as interface circuit must not change substantially, only need to adjust control program, simple and easy to do, cost is also much lower relatively, be expected commercialization, and can be applied in the valve actuating mechanism of other Cryo Refrigerator such as G-M, Salvay etc., transplantability is good, has certain popularization value.
The control circuit that we design is controlled in order to the distribution that realizes two valves or four valve vascular refrigerators as shown in the figure.Be characterized in that control circuit is simple, and have stronger antijamming capability.Control circuit links to each other with microcomputer LPT LPT1.Magnetic valve is controlled with solid-state relay SSR1～SSR4.Solid-state relay has good electrical isolation performance and response speed fast (less than 10ms), there is no electric spark and disturbs.The keying of valve is definite by the microcomputer internal clocking, and is very accurate, and indicates the duty of each valve with light emitting diode.
Along with popularizing of computer, be aided with reliable control circuit, believe that the microcomputer LPT controls the vascular refrigerator valve actuating mechanism in real time and will become a kind of simple mode.
Claims (1)
1, a kind of microcomputer is controlled the vascular refrigerator air distributing device in real time, it is characterized in that it by voltage-stabilized power supply circuit [1], control circuit [2], and high-tension circuit [3] is formed, and wherein voltage-stabilized power supply circuit is: voltage-stabilized power supply integrated package V
13. pin, capacitor C
1Positive pole, light emitting diode D
11Anodal continuous, V
12. pin, capacitor C
1Negative pole, resistance R
11One end links to each other and ground connection, resistance R
11The other end and light emitting diode D
11Negative pole links to each other, voltage-stabilized power supply integrated package V
23. pin, capacitor C
2Positive pole, light emitting diode D
12Positive pole link to each other V
22. pin, electric capacity V
2Negative pole, resistance R
12One end, capacitor C
3Negative pole, silicon stack B is anodal to link to each other and ground connection resistance R
12The other end and light emitting diode D
12Negative pole links to each other, V
1, V
21. pin, capacitor C
3Positive pole, silicon stack B negative pole links to each other, and the low coil that silicon stack exchanges end and transformer T joins, and the high-tension coil of transformer T meets attaching plug P
a
Control circuit is: in the voltage-stabilized power supply circuit, and voltage-stabilized power supply integrated package V
13. pin respectively with 4 resistance R
1One end links to each other, resistance R
1The other end connect the positive pole (1. pin) of the solid-state relay S in the high-tension circuit respectively, the negative pole of solid-state relay S (2. pin) respectively with 4 phase inverter U
22., 4., 6., 8. pin links to each other, 25 needle printer interface P
1 
, pin ground connection, P
12., 3., 4., 5. pin respectively with four-2 the input with the door U
11., 4., 9.,
Pin links to each other,
Pin and the master switch K of system one end, U
12., 5., 10.,
Pin, 4 resistance R
1The other end links to each other, resistance R
1Other end ground connection, U
13., 6., 8.,
Pin is respectively with U
21., 3., 5., 9. pin links to each other, connecting resistance R and respectively
2An end, resistance R
2The other end and light emitting diode anodally link to each other light emitting diode minus earth, V in the K switch one termination voltage-stabilized power supply circuit
23. pin;
High-tension circuit is: the resistance R of control circuit
3The other end and solid-state relay S positive pole (1. pin), U
22., 4., 6., 8. pin connects the negative pole (2. pin) of S respectively, S 4. pin links to each other with fuse one end, fuse other end combination hub P
21. pin connects high voltage source after the 3. pin of S is continuous, and P 2. pin connects high voltage source after linking to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94216702 CN2200163Y (en) | 1994-07-12 | 1994-07-12 | Computer real-time controlling vessel refrigeration machine air distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94216702 CN2200163Y (en) | 1994-07-12 | 1994-07-12 | Computer real-time controlling vessel refrigeration machine air distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2200163Y true CN2200163Y (en) | 1995-06-07 |
Family
ID=33832327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94216702 Expired - Fee Related CN2200163Y (en) | 1994-07-12 | 1994-07-12 | Computer real-time controlling vessel refrigeration machine air distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2200163Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439819C (en) * | 2002-08-20 | 2008-12-03 | 住友重机械工业株式会社 | Cryogenic refrigerator |
-
1994
- 1994-07-12 CN CN 94216702 patent/CN2200163Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439819C (en) * | 2002-08-20 | 2008-12-03 | 住友重机械工业株式会社 | Cryogenic refrigerator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |