CN87211585U - Electronic temperature controller with displaying plate - Google Patents
Electronic temperature controller with displaying plate Download PDFInfo
- Publication number
- CN87211585U CN87211585U CN 87211585 CN87211585U CN87211585U CN 87211585 U CN87211585 U CN 87211585U CN 87211585 CN87211585 CN 87211585 CN 87211585 U CN87211585 U CN 87211585U CN 87211585 U CN87211585 U CN 87211585U
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- CN
- China
- Prior art keywords
- circuit
- temperature
- control device
- temperature control
- defrost
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- 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.)
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- Devices That Are Associated With Refrigeration Equipment (AREA)
- Defrosting Systems (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The utility model which discloses an electronic temperature controller with a displaying plate is used in the temperature control, the temperature display and the function indication of an electric refrigerator, a refrigerator, the air conditioning equipment and the equipment requiring the temperature control. The utility model has the advantages of compact structure, high reliability, high precision and good manufacturability, with convenient assembly and disassembly, and the power consumption is smaller than 3 tiles.
Description
The utility model relates to the electronic temperature control device of being made up of electronic circuit, switching device and temp probe, and especially a kind of electronic temperature control device with display floater is used for refrigerator, refrigerator-freezer, air-conditioning and other needs the equipment temperature control of temperature control, temperature display and function indication.
Existing electronic temperature control device, nothing show the function that the controlled plant internal temperature changes in real time, and practicality and reliability are not put in order entirely, lacked to no decoration, function.
In view of the problems referred to above that prior art exists, task of the present utility model provides a kind of function of the create an aesthetic feeling appearance that the controlled plant internal temperature changes that can show in real time and puts in order the electronic temperature control device of complete energy-saving band display floater.
It is to adopt temp probe to be arranged on suitable position in the temperature control device, and be connected with simple electronic circuit, giving of voltage comparator put the threshold voltage signal and compared in output voltage signal by temp probe continuous measurement variations in temperature and the electronic circuit, control and the switching device Push And Release that compressor is in series reach the cold control purpose of control.This comparison signal is delivered to the display circuit that is connected with display simultaneously, is shown the variation of controlled plant internal temperature on the controlled plant panel in real time by light emitting diode, and what temperature was low more, light emitting diode is bright is many more, otherwise few more.
Be provided with adjustable potentiometer on the display floater right side, can not open the controlled plant door regulates its internal temperature, in addition, also be provided with compressor start-stop indicator lamp, defrost indicator lamp, manual---defrost start button, manual defrost stop button (or auto-stopper).
Electronic control circuit is divided into three parts:
First comprises that is provided with the temperature control circuit that element such as potentiometer is formed by four voltage comparator integrated circuits, temp probe and temperature, and a bistable that is made of four NAND gate circuits triggers integrated circuit, a compressor start-stop execution control circuit of being made up of the transistor AND gate relay.
Manual defrost circuit and time delay circuit that second portion is made up of four comparator circuits, four NAND gate circuits, temp probe and press button device etc.
Freezer temperature five utmost point display circuits that third part is made up of semiconductor assembly, light emitting diode and potentiometer etc.
The utility model structure mainly comprises a master control borad, a manual control panel, a display floater and relevant winding thread.Five core sockets on the master control borad connect with the 220V50HZ AC power by interconnection, also connect with compressor, two core sockets on the master control borad connect with temp probe by interconnection with three core sockets, 10 core sockets on the master control borad connect with manual control panel (four-core socket) and display floater (7 core socket) respectively by interconnection, wherein have one to be the common ground line.
According to the electronic temperature control device of the utility model design, except that above-mentioned advantage, also have temperature control accurately, compact conformation, power consumption low (less than 3 watts) and the advantage being convenient to produce in batches.
The utility model technical indicator: power supply is for exchanging 50HZ, power consumption≤3W
Temperature-control range
Refrigerating chamber: the defrost rest point is+5 ℃ ± 0.8 ℃
Refrigerating chamber: making war is+8 ℃ ± 0.8 ℃; Rest point is 1 ℃ ± 0.8 ℃, middle stepless temperature regulating, and the visual user of control range producer will suitably adjust.
The defrost time delays is greater than 5 minutes, less than 12 minutes.
Temperature shows: five utmost points show, temperature range :-12 ℃----24 ℃
The control compressor horsepower is 100W---250W.
Control defrost power is 100W---250W.
The supply voltage adaptive capacity is 187---242V, 50HZ.
Environment temperature: 10 ℃-45 ℃, temperature characterisitic changes 1.6 ℃.
Relative temperature is not more than 90%.
Vibration resistance: amplitude 3mm, frequency 22HZ.
Below an embodiment of the present utility model will be described in detail particularly.
Fig. 1 is the block diagram of electronic temperature control device that is used for the band display floater of two warm two-door electric freezers.(1) is that control circuit, (3) are that compressor, (5) are automatic time delay circuit and manual (or automatically) defrost halt circuit for Pyatyi temperature display circuit, (7) for defrost begins circuit (8) for temperature control circuit, (6) for relay circuit, (4) for thermistor temp probe, (2) among the figure.
Fig. 2 is the circuit diagram of Fig. 1.
Fig. 3 is two temperature double-door refrigerator profiles that Fig. 2 circuit electronic temperature control device is housed.(9) are that master control borad, (10) and (11) are respectively thermistor temp probe RD and RS, (12) are display floater among the figure.
Fig. 4 is that the A of Fig. 3 refrigerator section plate display floater (12) is to schematic diagram.(13) are that compressor start-stop indicator lamp, (14) are the Pyatyi temperature indicator that 10 light emitting diodes are formed among the figure, (15) be that defrost indicator lamp, (16) are for defrost begins microswitch, (17) stop microswitch for defrost and (18) are temperature adjustment half adjustable potentiometer.
From Fig. 1 to Fig. 4, be realized that design and implementation of the present utility model.
Circuit (Fig. 2) mainly is divided into three parts: first comprises one by assembly U
1339 4 voltage comparator circuits, thermistor probe RS, temperature are provided with potentiometer W
1With W
2Deng the temperature-control circuit that element is formed, one by assembly U
2The bistable trigger circuit that 4,011 four NAND gate circuits constitute and one are by a transistor BG
2With a relay J
2The compressor start-stop of forming is carried out control circuit.
Second portion comprises by assembly U
1339 4 voltage comparator circuits, U
2Manual defrost circuit and comparison delay circuit that 4,011 four NAND gate circuits, thermistor temp probe RD, press button (begin, stop) etc. are formed.
Third part is by assembly U
31405, ten red light emitting diodes, adjustable potentiometer W
3Deng the freezer temperature display circuit of forming.
In the temperature control circuit of first, U
1339 4 voltage comparators, 1,6,7 pin are the lowest temperature comparator, and 6 pin are by R
1, R
2, R
3With W
2A lower limit temperature comparative level is provided, works as W
2Accent just reflects different lower limit temperatures when diverse location.U
12,4,5 pin of 339 4 voltage comparators are the temperature upper limit comparator, and 5 pin are by half variable potentiometer W
1A ceiling temperature comparative level is provided.With W
1Being transferred to correct position starts shooting a little as compressor.
U
1 Voltage comparator 4 pin link to each other with 7 pin, are connected to by temp probe RS and resistance R
6The temperature of refrigerating chamber switching levels sample circuit of forming.By U
1Voltage comparator 8,9,14 pin, temp probe RD and resistance R
7Form freezer temperature switching levels sample circuit.
The concrete control procedure of temperature is as follows:
When the refrigeration indoor temperature rises, just cause thermistor temp probe RS resistance to descend, VA voltage increases, when VA greater than temperature upper limit U
1During comparator 5 pin voltages, U then
1To be OV and 1 pin be+7V to comparator 2 pin.At this moment, NAND gate U
24011 3 pin are high potential, cause BG
2The pipe conducting, relay J
2Adhesive makes compressor starts work, and green indicating lamp is bright, refrigeration beginning, when temperature of refrigerating chamber descends, the RS resistance just increases, VA voltage descends, as VA greater than lowest temperature comparator 6 pin voltages less than temperature upper limit U
1During comparator 5 pin voltages, NAND gate U then
24011 3 pin still are in high potential state, at this moment, and BG
2Continue conducting, relay J
2Keep attracting state, compressor works on, and it is bright that green indicating lamp continues, and continues refrigeration, and the refrigeration indoor temperature continues to descend, and causes the RS resistance to increase again, and voltage VA continues decline, when voltage VA less than lowest temperature U
1During 6 pin voltages of comparator, 1 pin voltage is low level OV, and 2 pin voltages are high level.This moment NAND gate U
24001 3 pin voltages are low level OV, cause BG2 to end, and relay J 2 disconnects, and compressor quits work, and green indicating lamp goes out, and refrigeration stops.At this moment, the bottom out again of temperature of refrigerating chamber temperature repeats said process automatically.
Manual defrost circuit working process in the second portion, synthermal control circuit similar just lacked a lowest temperature comparator, so do not given unnecessary details.
Wherein time delay circuit is by U
1 Voltage comparator 10,11,13 pin, with timing resistor R
8, capacitor C
1Deng composition.When pressing " defrost start button ", red led is bright, U
2Four NAND gates, 11 pin are in high voltage, cause J
1Adhesive, defrost begins.This moment, high level voltage passed through R
6Resistance is to capacitor C
1Charging has only the U of working as
1When voltage comparator 10 pin voltages were higher than 11 pin voltages, 13 pin just were level OV.At this moment, press " defrost stop button ", J
1Discharge, cause defrost to stop.Above-mentioned this section charging interval is defrost time delays (being about 7 minutes), can prevent defrost during this period of time, even frequent start-stop also can guarantee not frequent operation of compressor, thereby compressor is shielded.Its delay time can be adjusted on demand.
Third part, promptly the freezer temperature display circuit is characterized in that indicator lamp is just bright entirely when certain threshold voltage of input; When certain value high voltage of input, indicator lamp just goes out entirely.And when refrigerating chamber thermistor temp probe RS output voltage signal changed with its indoor temperature change generated in case, voltage VA met above-mentioned requirements with the variation that temperature takes place.So, as long as suitably adjust first adjustable potentiometer of display floater (Fig. 4) W
3(among Fig. 4 18) and input resistance R
4, feedback resistance R
5, just can satisfy when temperature is low, lamp is all bright; When temperature was high, lamp went out and to keep one group of lamp bright.
Only described the temperature of refrigerating chamber procedure for displaying above, because freezer temperature is relative with temperature of refrigerating chamber, promptly refrigerating chamber is 1 ℃～8 ℃, and refrigerating chamber is-10 ℃～-24 ℃, has shown that temperature of refrigerating chamber has also just shown freezer temperature indirectly.Can certainly directly show freezer temperature, go up as long as the display circuit input is received refrigerating chamber thermistor temp probe RD.
As can be seen from Figure 3, display floater (12) is housed on the refrigerator front panel, is equipped with on the rear board thermistor temp probe RD(10 is housed respectively on master control borad (9), refrigerating chamber a and the refrigerating chamber b squab panel) and RS(11).
Claims (6)
1, by electronic circuit, the electronic temperature control device that switching device and temp probe are formed, especially a kind of electronic temperature control device with display floater, it is characterized in that having in the circuit four voltage comparator integrated circuits, bistable triggers integrated circuit, compare delay circuit, five utmost point temperature display circuits, the thermistor temp probe, light emitting diode, compressor start-stop indicator lamp, defrost start-stop indicator lamp, contact switch, comprise a master control borad on the structure, a manual control panel and a display floater, five core sockets on the master control borad connect with the 220V50HZ AC power by interconnection, also connect with compressor, two core sockets on the master control borad connect with temp probe by interconnection with three core sockets, 10 core sockets on the master control borad connect with manual control panel (four-core socket) and display floater (7 core socket) respectively by interconnection, wherein have one to be the common ground line.
2, according to the electronic temperature control device of claim 1 regulation, it is characterized in that temperature is provided with potentiometer W in the circuit
2Be 10K Ω.
3, according to the electronic temperature control device of claim 1 regulation, it is characterized in that having in the circuit half adjustable potentiometer W
1With W
3With adjustable R
1, R
2, R
3, R
4, and R
5
4, according to the electronic temperature control device of claim 1 regulation, it is characterized in that adopting relay J
1With J
2Be contact switch in the circuit.
5, the electronic temperature control device of stipulating according to claim 1, it is characterized in that display floater (12) is contained on the refrigerator panel, master control borad (9) is contained on the refrigerator rear board, and thermistor temp probe RD(10 is housed respectively on the rear wall in refrigerating chamber a and refrigerating chamber b) and RS(11).
6, the electronic temperature control device of stipulating according to claim 1, five utmost point displays (14) of it is characterized in that a compressor start-stop indicator lamp (13) is arranged on the display floater (12), one being made up of 10 light emitting diodes, a defrost indicator lamp (15), defrost begin microswitch (16), a defrost stops a microswitch (17) and a temperature adjustment variable potentiometer (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87211585 CN87211585U (en) | 1987-08-08 | 1987-08-08 | Electronic temperature controller with displaying plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87211585 CN87211585U (en) | 1987-08-08 | 1987-08-08 | Electronic temperature controller with displaying plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87211585U true CN87211585U (en) | 1988-12-07 |
Family
ID=4826367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87211585 Withdrawn CN87211585U (en) | 1987-08-08 | 1987-08-08 | Electronic temperature controller with displaying plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87211585U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627691A (en) * | 2016-02-01 | 2016-06-01 | 安徽省万爱电器科技有限公司 | Assembly technique of small single-door refrigerator |
-
1987
- 1987-08-08 CN CN 87211585 patent/CN87211585U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627691A (en) * | 2016-02-01 | 2016-06-01 | 安徽省万爱电器科技有限公司 | Assembly technique of small single-door refrigerator |
| CN105627691B (en) * | 2016-02-01 | 2018-02-13 | 安徽省万爱电器科技有限公司 | A kind of packaging technology of small-sized simple gate 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 | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| 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 |