CN2557894Y - Sequence starting protector with ice-making refrigerator for bar table - Google Patents
Sequence starting protector with ice-making refrigerator for bar table Download PDFInfo
- Publication number
- CN2557894Y CN2557894Y CN 02267622 CN02267622U CN2557894Y CN 2557894 Y CN2557894 Y CN 2557894Y CN 02267622 CN02267622 CN 02267622 CN 02267622 U CN02267622 U CN 02267622U CN 2557894 Y CN2557894 Y CN 2557894Y
- Authority
- CN
- China
- Prior art keywords
- air door
- bar desk
- heating wire
- logic control
- ice machine
- 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.)
- Expired - Lifetime
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- Devices That Are Associated With Refrigeration Equipment (AREA)
- Defrosting Systems (AREA)
Abstract
Disclosed is a sequentially starting protector for the refrigerator which has a bar counter ice maker, belonging to the field of refrigeration equipment. The utility model comprises a refrigeration compressor, a fan, a motor starting control unit of an air door, a bar counter electrically heated wire, an air door electrically heated wire, a control unit of a defrosting electrically heated wire and a defrosting temperature sensor. The utility model is characterized in that a logic control unit is arranged; the defrosting temperature sensor is connected with A/D input end of the logic control unit; and the I/O ports of the logic control unit are respectively connected with the refrigeration compressor, the fan, the motor starting control unit of the air door, the bar counter electrically heated wire, the air door electrically heated wire and the control unit of the defrosting electrically heated wire. Controlled by the logic control unit, the starting time of plural AC inductive loads is staggered. Thus, the maximum starting currents of the plural AC inductive loads are avoided being stacked, and the maximum working needed capacity of the power supply device of the whole refrigerator is reduced. The utility model can be widely used as the load starting controlling and protecting device of various multifunctional refrigerators of large capacity with multi-load.
Description
Technical field
The utility model belongs to art of refrigeration units, relates in particular to a kind of control device that is used for compression refrigeration equipment.
Background technology
The control scheme that start-control device adopted of refrigerator is started all interchange power loads of refrigerator, as circuits such as compressor, fan electromotor, defrosting device and illuminations simultaneously for after power supply send electricity at present.But increase along with refrigerator functions and capacity, the AC inductive load that refrigerator is installed is more and more, the refrigerator that for example has ice machine, its main power load comprise ice machine motor, refrigeration compressor motor, fan electromotor, send ice motor, trash ice motor, trash ice to select magnetic valve, entering water electromagnetic valve, go out to ice magnetic valve, defrosting electrothermal wire etc.These AC inductive loads are if send the electricity starting simultaneously, total first starting current is big (starting current of AC load is 5～7 times of its normal running current), power requirement to refrigerator has bigger capacity, after if power supply satisfies the maximum startup capacity of all AC loads, the capacity of refrigerator power supply has bigger affluence amount again when above-mentioned load normally moves, and causes the waste of equipment, material, manufacturing cost; The 2nd, starting can cause interference each other in the time of above-mentioned AC load, causes the job insecurity of its electronic-controlled installation.
Chinese patent publication number CN 1237696, the open date is on December 08th, 1999, name is called in the application for a patent for invention of " cooling unit controller " and discloses a kind of cooling unit controller, and its control circuit uses condenser fan motor, the evaporator fan motor of d.c. motor as cooling unit.Power circuit at condenser fan motor is provided with clipping circuit, when the starting of condenser fan motor, the voltage that puts on condenser fan motor is risen.But it can't solve total big problem of starting current under the AC load while starting condition.
The utility model content
Goal of the invention of the present utility model provides a kind of sequence starting protector of band bar desk ice machine refrigerator of total starting current that can reduce AC load effectively.
The technical solution of the utility model is: a kind of sequence starting protector with bar desk ice machine refrigerator is provided; comprise refrigeration compressor; fan; the electric motor starting control module of air door; the bar desk heating wire; the air door heating wire; defrosting electrothermal wire's control module and defrost temperature sensor; it is characterized in that: logic control element is set; the defrost temperature sensor is connected with the A/D input of logic control element, the I/O port of logic control element respectively with refrigeration compressor; fan; the electric motor starting control module of air door; the bar desk heating wire; the air door heating wire; defrosting electrothermal wire's control module connects.
The I/O port of wherein said logic control element is connected through the electric motor starting control module of over-drive unit and refrigeration compressor, fan, air door, bar desk heating wire, air door heating wire, defrosting electrothermal wire's control module respectively.Its described defrost temperature sensor is a thermistor; Described logic control element is a single chip circuit; Described driver element is the reverse output driver circuit of Darlington; The electric motor starting control module of described refrigeration compressor, fan, air door and bar desk heating wire, air door heating wire, defrosting electrothermal wire's control module is electronic switch or relay circuit.
Its described defrost temperature sensor comprises thermistor Rx, resistance R 1, R2 and capacitor C 1, wherein an end of resistance R 1 is connected with power supply Vdd, its other end is connected with an end of resistance R 2 and through resistance R x ground connection, and the other end of resistance R 2 is connected with the A/D port of logic control element IC1 and through capacitor C 1 ground connection; Described logic control element comprises IC 1, and wherein the other end of the resistance R 2 in the A/D port of IC1 and the defrost temperature sensor is connected, its each I/O port respectively with the corresponding connection of each input of driver element IC2; Described driver element comprises IC 2, what wherein each input of IC 2 was corresponding respectively is connected with the I/O port of logic control element IC1, and its output passes through electric motor starting control relay control coil, bar desk heating wire, the air door heating wire of refrigeration compressor, fan, air door respectively, defrosting electrothermal wire's control relay control coil is connected with power Vcc; Described relay circuit comprises relay, and wherein an end of relay control coil and IC 2 each corresponding outputs connect, and its other end is connected with power Vcc; The contact of relay major loop is serially connected with between the load motor coil joint of power supply V and correspondence.
Compared with the prior art, the utility model has the advantages that:
1. the control by logic control element, according to pre-set opening, stop in proper order, start successively and disconnect each power load, staggered the start-up time of a plurality of AC inductive loads, thereby avoided the superposition phenomenon of the maximum starting current of a plurality of AC loads, reduced the maximum functional demand capacity of whole refrigerator supply unit.
2. reduced capacity requirement, reduced material consumption, saved manufacturing cost, helped alleviating user's financial burden supply line, internal electric source.
3. reduced interference, helped the long-term stability operation of The whole control system inner electronic control circuit.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is the line map of an embodiment.
The specific embodiment
Among Fig. 1, the defrost temperature sensor is connected with the input of logic control element, and the I/O port of logic control element is connected with the electric motor starting control module of refrigeration compressor, fan, air door, bar desk heating wire, air door heating wire, defrosting electrothermal wire's control module respectively through over-drive unit.
The defrost temperature sensor is set is used to detect the interior temperature of refrigerator, the temperature that records when the defrost temperature sensor by the judgement and the execution of logic controller internal program, is at first connected compressor electric motor during greater than default definite value, connect the top gear of fan electromotor at interval behind the certain hour again, fan electromotor is run up, then, connect the power supply of air door heating wire, again behind the certain interval of time, damper motor gets electric startup, and is last, connects the power supply of bar desk heating wire.
The temperature that records when the defrost temperature sensor is during less than default definite value, judgement and execution by the logic controller internal program, at first connect defrosting electrothermal wire's power supply, behind the energising certain hour, disconnect defrosting electrothermal wire's power supply, connect the power supply of bar desk heating wire, after the bar desk heating wire reaches default definite value conduction time, disconnect its power supply, the power supply of connecting the air door heating wire heats defrost to air door, behind the certain hour interval, disconnect the power supply of air door heating wire, start the refrigeration compressor motor refrigeration, behind the machine operation certain hour to be compressed, connect fan electromotor, last, connect damper motor.
Startup by above-mentioned load, stop the reasonable setting and the layout of order, make that logic control element can be according to the actual condition and the needs of refrigerator, rationally arrange with stagger each exchange inductive load start-up time, start blanking time and boot sequence, reduce total equipment starting current most possibly.
The purpose that driver element is set is in order to improve the on-load capacity of logic control circuit (single chip circuit) output contact, that is usually said the carrying out to single-chip microcomputer output contact capacity (capacity) expansion.
Among Fig. 2, thermistor Rx, resistance R 1, R2 and capacitor C 1 constitute the temperature detection sensor circuit, wherein an end of resistance R 1 is connected with power supply Vdd, its other end is connected with an end of resistance R 2 and through resistance R x ground connection, the other end of resistance R 2 is connected with the A/D port of single-chip microcomputer IC1 and through capacitor C 1 ground connection, each T/O port I/O-i (i=1,2,3,4 of single-chip microcomputer IC1 ..., down together.) respectively with the corresponding connection of each input INi of the reverse output driver circuit IC2 of Darlington, its output O-i is connected with power Vcc through the control coil J4～J6 of the starting control relay J1～J3 of refrigeration compressor, fan electromotor, damper motor, bar desk heating wire, air door heating wire, defrosting electrothermal wire's control relay respectively, and the contact J1k～J6k of relay J 1～J6 major loop is serially connected with between power supply V and the corresponding load motor coil CH1～CH6.
Thermistor Rx is the signal of telecommunication with the temperature inversion in the refrigerator, and the A/D port by single-chip microcomputer IC1 inputs among the IC1, compares with default setting value; Single-chip microcomputer is judged, is selected according to result relatively, determines the starting sequencing of each AC load and switches on the duration of runs; By its corresponding I/O-i port output control signal, by driver element go to control corresponding motor or heating wire starting, stop and the switching electricity, thereby reach effective reduction AC load total starting current, reduce the purpose of power supply aggregate demand capacity.
Power Vcc is 12V, Vdd is 5V, IC 1 can be selected the singlechip chip of models such as PIC16C74B, MK8974A or MC68HC908J for use, IC2 can adopt the reverse output driver chip of ULN2000 series Darlington of ALLEGRO company, as the product of models such as ULN2001, ULN2003 or ULN2004.
Other part circuits are prior art, are not narrating at this.
The utility model can be widely used as various big capacity, load starting multi-functional, the refrigerator of loading is controlled and protective device more.
Claims (10)
1. sequence starting protector with bar desk ice machine refrigerator; comprise electric motor starting control module, bar desk heating wire, the air door heating wire of refrigeration compressor, fan, air door, defrosting electrothermal wire's control module and defrost temperature sensor; it is characterized in that: logic control element is set; the defrost temperature sensor is connected with the A/D input of logic control element, and the I/O port of logic control element is connected with the electric motor starting control module of refrigeration compressor, fan, air door, bar desk heating wire, air door heating wire, defrosting electrothermal wire's control module respectively.
2. according to the sequence starting protector of the described band of claim 1 bar desk ice machine refrigerator, the I/O port that it is characterized in that described logic control element is connected through the electric motor starting control module of over-drive unit and refrigeration compressor, fan, air door, bar desk heating wire, air door heating wire, defrosting electrothermal wire's control module respectively.
3. according to the sequence starting protector of the described band of claim 1 bar desk ice machine refrigerator, it is characterized in that described defrost temperature sensor is a thermistor.
4. according to the sequence starting protector of the described band of claim 1 bar desk ice machine refrigerator, it is characterized in that described logic control element is a single chip circuit.
5. according to the sequence starting protector of the described band of claim 1 bar desk ice machine refrigerator, it is characterized in that described driver element is the reverse output driver circuit of Darlington.
6. according to the sequence starting protector of the described band of claim 1 bar desk ice machine refrigerator, it is characterized in that the electric motor starting control module of described refrigeration compressor, fan, air door and bar desk heating wire, air door heating wire, defrosting electrothermal wire's control module is electronic switch or relay circuit.
7. according to the sequence starting protector of claim 1 or 3 described band bar desk ice machine refrigerators; it is characterized in that described defrost temperature sensor comprises thermistor Rx, resistance R 1, R2 and capacitor C 1; wherein an end of resistance R 1 is connected with power supply Vdd; its other end is connected with an end of resistance R 2 and through resistance R x ground connection, and the other end of resistance R 2 is connected with the A/D port of logic control element IC1 and through capacitor C 1 ground connection.
8. according to the sequence starting protector of claim 1 or 4 described band bar desk ice machine refrigerators; it is characterized in that described logic control element comprises IC 1; wherein the other end of the resistance R 2 in the A/D port of IC1 and the defrost temperature sensor is connected, its each I/O port respectively with the corresponding connection of each input of driver element IC2.
9. according to the sequence starting protector of claim 1 or 5 described band bar desk ice machine refrigerators; it is characterized in that described driver element comprises IC 2; what wherein each input of IC 2 was corresponding respectively is connected with the I/O port of logic control element IC1, and its output passes through electric motor starting control relay control coil, bar desk heating wire, the air door heating wire of refrigeration compressor, fan, air door respectively, defrosting electrothermal wire's control relay control coil is connected with power Vcc.
10. according to the sequence starting protector of claim 1 or 6 described band bar desk ice machine refrigerators, it is characterized in that described relay circuit comprises relay, wherein an end of relay control coil and IC 2 each corresponding outputs connect, and its other end is connected with power Vcc; The contact of relay major loop is serially connected with between the load motor coil joint of power supply V and correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267622 CN2557894Y (en) | 2002-06-14 | 2002-06-14 | Sequence starting protector with ice-making refrigerator for bar table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02267622 CN2557894Y (en) | 2002-06-14 | 2002-06-14 | Sequence starting protector with ice-making refrigerator for bar table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2557894Y true CN2557894Y (en) | 2003-06-25 |
Family
ID=33733184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02267622 Expired - Lifetime CN2557894Y (en) | 2002-06-14 | 2002-06-14 | Sequence starting protector with ice-making refrigerator for bar table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2557894Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101065626B (en) * | 2005-01-31 | 2010-06-16 | 海尔集团公司 | Working method of wind direct freezing combination multiple temperature control refrigerator equipped with ice making machine |
| CN105465023A (en) * | 2015-11-16 | 2016-04-06 | 珠海格力电器股份有限公司 | Control method and device of multi-fan system |
| CN110173807A (en) * | 2019-05-10 | 2019-08-27 | 广东美的制冷设备有限公司 | Control method, device and the multi-online air-conditioning system of multi-online air-conditioning system |
| WO2020142915A1 (en) * | 2019-01-09 | 2020-07-16 | 合肥美的电冰箱有限公司 | Refrigerator and control method, device and system therefor |
-
2002
- 2002-06-14 CN CN 02267622 patent/CN2557894Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101065626B (en) * | 2005-01-31 | 2010-06-16 | 海尔集团公司 | Working method of wind direct freezing combination multiple temperature control refrigerator equipped with ice making machine |
| CN105465023A (en) * | 2015-11-16 | 2016-04-06 | 珠海格力电器股份有限公司 | Control method and device of multi-fan system |
| CN105465023B (en) * | 2015-11-16 | 2017-12-19 | 珠海格力电器股份有限公司 | The control method and device of multi fan system |
| WO2020142915A1 (en) * | 2019-01-09 | 2020-07-16 | 合肥美的电冰箱有限公司 | Refrigerator and control method, device and system therefor |
| CN110173807A (en) * | 2019-05-10 | 2019-08-27 | 广东美的制冷设备有限公司 | Control method, device and the multi-online air-conditioning system of multi-online air-conditioning system |
| CN110173807B (en) * | 2019-05-10 | 2021-04-20 | 广东美的制冷设备有限公司 | Control method and device of multi-split air conditioning system and multi-split air conditioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20120614 Granted publication date: 20030625 |