CN2121003U - Computor temp.-control and protecting apparatus for refrigerator - Google Patents
Computor temp.-control and protecting apparatus for refrigerator Download PDFInfo
- Publication number
- CN2121003U CN2121003U CN 92204918 CN92204918U CN2121003U CN 2121003 U CN2121003 U CN 2121003U CN 92204918 CN92204918 CN 92204918 CN 92204918 U CN92204918 U CN 92204918U CN 2121003 U CN2121003 U CN 2121003U
- Authority
- CN
- China
- Prior art keywords
- circuit
- temperature
- control
- chip microcomputer
- scm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000001012 protector Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000008014 freezing Effects 0.000 abstract description 2
- 238000007710 freezing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 230000002498 deadly effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Control Of Temperature (AREA)
Abstract
The utility model relates to a computer temperature-control and protecting apparatus with various functions for refrigerators. The RESET port of an SCM is added with an oscillator. The waveshape generated by the oscillator passes through a differential circuit or a monostable circuit and is input into the SCM to make the SCM in the intermittent working state all the time to avoid the interference that the computer does not work by the intense magnetic field and the voltage fluctuation, simultaneously detect the over voltage and under voltage of the alternating current and proceed the timed guard when powerdown and secondary start-up. The utility model implements the two-way temperature control, which can optionally set the freezing temperature and the cold room temperature to achieve the optimum effect of saving power.
Description
The utility model relates to the device of a kind of refrigerator computer temperature control and outage, start delay protection, overvoltage/undervoltage protection.
The control of the temperature of refrigerator develops by mechanical temperature-control, electronic temperature control and to computer temperature control.The mechanical temperature-control precision is low, heavy, and lack time-delay and cross, under-voltage protection function.It is adjustable that electronic temperature control has the temperature control scope, and advantages such as delay protection, but poor anti jamming capability very easily produce misoperation.Computer temperature control is the another leap on the electronic temperature control basis, and it can make work place of refrigerator do optimum Working.But the deadly defect of " deadlock " can take place when the main element in the Computer Thermostat---single-chip microcomputer is subjected to the voltage pulsation and the interference of electromagnetic field, hindered the development of Computer Thermostat.
The purpose of this utility model is to provide a kind of antijamming capability strong, can set freezing arbitrarily and temperature of refrigerating chamber and have outage time-delay, crosses, the Computer Thermostat of under-voltage protection.
The utility model adopts single-chip microcomputer to make master element, and its peripheral circuit comprises temperature measurement circuit, anti-jamming circuit, executive circuit, holding circuit, display circuit and power circuit.Described anti-jamming circuit is to connect an oscillator at the RESET of single-chip microcomputer mouth, is serially connected with a differential circuit or monostable circuit between oscillator and interface microcontroller.After the oscillator signal of oscillator output passes through differential circuit or monostable circuit, obtain pulse reset signal in the RESET porch of single-chip microcomputer, the reset cycle of reset signal only is a few tens of milliseconds.In case when computer because of disturbing " deadlock " took place, this reset signal can make computer recover operate as normal in moment.Because in a reset cycle, program has repeated for several times, and the power-on reset signal of this and computer has tangible difference.According to different reset signals, determine different working methods, therefore can not influence other each functions.The periodicity reset enable signal single-chip microcomputer that utilizes oscillator to produce is in the discontinuous operation state, has overcome the interference and the misoperation that make single-chip microcomputer " deadlock " because of high-intensity magnetic field or voltage pulsation effectively.Described holding circuit is made up of voltage detecting circuit, and voltage detecting circuit comprises transformer, commutation diode, resistance.Behind the output of the transformer resistance in parallel, an end ground connection, an end is imported the analog-to-digital conversion mouth AN of single-chip microcomputer behind diode 2CP
2Civil power obtains a given mensuration waveform at the C point after step-down, halfwave rectifier.This circuit is set two effects are arranged: one, the instantaneous voltage value of test AC power, be used for calculating virtual value, judge whether to exceed the range of nominal tension of compressor with this, reach the protection purpose by reporting to the police and stopping to start compressor.Two, AC power is carried out zero passage test, and according to the suction of relay, put delay time and realize that " zero " point of relay inhales, puts, prevent the arc erosion of contact, with the service life of prolongation relay and refrigerator.Described temperature measurement circuit is made up of temperature sensor and amplifier.The A/D converter that temperature sensor and voltage detecting are converted into behind the signal of telecommunication by one-chip computer inside carries out data acquisition, after comparing with the temperature that is provided with then, sends instruction by computer, flows to executive circuit.The utility model is provided with two groups of temperature sensors and amplifier, is respectively applied for sensing refrigerating chamber and refrigerated storage temperature.Its circuit respectively with the AN of single-chip microcomputer
0, AN
1Mouth connects.Described executive circuit is made up of power tube and relay fourth, and the relay fourth is the contactor of compressor electric motor.Described display circuit comprises 7 sections charactrons and light emitting diode.The utility model adopts 27 sections charactrons to the demonstration of automaticallying switch of two-way temperature, demonstrates the temperature value of refrigerating chamber and refrigerating chamber respectively.Each room temperature all has light emitting diode separately to indicate.Realize that with 4 seven segment digital tubes and crystal oscillator clock shows in addition.
The utlity model has following advantage:
1, can be under any electrical interference situation operate as normal.
2, can carry out standard mode, the setting of power saving mode is to obtain power savings preferably.
3, outage time-delay and start delay protection function and cross, owe the overprotection function are arranged.
4, can carry out the setting respectively of refrigerating chamber and temperature of refrigerating chamber.
In case 5 temperature sensors are malfunctioning, temperature controller also automatically enters the most rational working method, promptly has the function of intelligent temperature control.
The utility model accompanying drawing drawing is described as follows.
Fig. 1 is embodiment of the present utility model.
Fig. 2 is the oscillogram of 3 of A among Fig. 1, B, C.
That Fig. 3 provides is monostable circuit figure.
Among the figure
1 is oscillator, and 2,3 is temperature sensor, and 4 is power supply, and 5 is monostable pipe;
C
1400P，C
227P；
D
1～D
32CP
R
110K, R
24K7, R
3, R
5Feedback resistance, R
4, R
620K, R
7, R
810K, R
9-R
15100 Ω;
IC
1MC6805R2，IC
2、IC
3μA741
Q
1、Q
23DG6。
Claims (2)
1, a kind of refrigerator computer temperature control and protector; by single-chip microcomputer and temperature measurement circuit; executive circuit; holding circuit; composition such as display circuit and power circuit; it is characterized in that: be connected with an oscillator at the RESET of single-chip microcomputer mouth, and on this circuit, also be serially connected with a differential circuit or monostable circuit.
2, refrigerator computer temperature control as claimed in claim 1 and protector; it is characterized in that: described holding circuit is that the analog-to-digital conversion mouth at single-chip microcomputer is connected to voltage detecting circuit; it comprises transformer; diode and resistance, the output of transformer connect the analog-to-digital conversion mouth of single-chip microcomputer after the diode halfwave rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92204918 CN2121003U (en) | 1992-03-18 | 1992-03-18 | Computor temp.-control and protecting apparatus for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92204918 CN2121003U (en) | 1992-03-18 | 1992-03-18 | Computor temp.-control and protecting apparatus for refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2121003U true CN2121003U (en) | 1992-11-04 |
Family
ID=4951211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92204918 Granted CN2121003U (en) | 1992-03-18 | 1992-03-18 | Computor temp.-control and protecting apparatus for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2121003U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780812A (en) * | 2019-01-04 | 2019-05-21 | 青岛海尔股份有限公司 | The treating method and apparatus of the running state data of refrigerator |
-
1992
- 1992-03-18 CN CN 92204918 patent/CN2121003U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780812A (en) * | 2019-01-04 | 2019-05-21 | 青岛海尔股份有限公司 | The treating method and apparatus of the running state data of refrigerator |
| CN109780812B (en) * | 2019-01-04 | 2022-10-28 | 海尔智家股份有限公司 | Method and device for processing running state data of refrigerator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: YU LIHUI TO: ZHEJIANG HUARI GROUP CO.,LTD. |
|
| CP03 | Change of name, title or address |
Address after: 310016 Hangzhou Road, Zhejiang, Hangzhou 69-8 Patentee after: Huari Group Co., Zhejiang Address before: 310007 No. 7, Lane West, Zhao Qing, Hangzhou, Zhejiang, Xihu District Patentee before: Yu Lihui |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |