CN1189713C - Refrigerating system - Google Patents
Refrigerating system Download PDFInfo
- Publication number
- CN1189713C CN1189713C CNB021005370A CN02100537A CN1189713C CN 1189713 C CN1189713 C CN 1189713C CN B021005370 A CNB021005370 A CN B021005370A CN 02100537 A CN02100537 A CN 02100537A CN 1189713 C CN1189713 C CN 1189713C
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- temperature
- refrigerating chamber
- control part
- heater
- refrigerating
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Abstract
The present invention relates to a refrigerating system which regulates the supply of cold air according to the change of ambient temperature. The present invention is provided with an ambient temperature perception sensor and a refrigerating chamber temperature perception sensor. The temperature detected by the ambient temperature perception sensor is lower than the setting temperature, the refrigerating chamber temperature is risen by the driving of a heater. When the refrigerating chamber temperature is risen by the heater, the temperature detected by the refrigerating chamber temperature perception sensor and the setting refrigerating chamber temperature are used as foundation, and a compressor is driven to generate cold air. The refrigerating chamber temperature is used as the foundation to control the refrigerating system, the refrigerating chamber temperature can be maintained more than setting temperature when the ambient temperature is below 0 DEG C, and therefore, the present invention can supply proper cold air to a freezing chamber and a refrigerating chamber. The present invention can prevent the excessive cooling of the refrigerating chamber and the temperature rise of the freezing chamber under the condition of ambient temperature influence, maintain the freshness of food, can be stored for a long time, and enhance the dependability of products.
Description
Technical field
What the present invention relates to is a kind of refrigerating system of regulating the cold air supply according to the variation of environment temperature.
Background technology
General refrigerating system is the system according to the supply of refrigerating chamber temperature inside state control cold air.Shown in Figure 1, refrigerating chamber 1 one sides are provided with temperature sensor 5, are the supply of basis control cold air according to temperature sensor 5 detected temperatures, and temperature sensor 5 detected temperatures are imported to control part.Control part, when the temperature that judgement detects from temperature sensor is higher than refrigerating chamber design temperature, drive compression machine 7 and fan 13, driving by compressor produces high-temperature high-pressure medium, carry out producing cold air after the heat exchange with air around evaporimeter 11, cold air is supplied to refrigerating chamber and refrigerating chamber 3 by cold air supply stream 9.To the cold air of refrigerating chamber 1 supply by being arranged on the outlet 17 between cold air supply stream 9 and the refrigerating chamber, to the cold air of refrigerating chamber 3 supplies by being located at the outlet 15 between cold air supply stream 9 and the refrigerating chamber.When lower than the design temperature of refrigerating chamber inside, judgement can be to indoor supply cold air from temperature sensor 5 detected temperature.Control part stops the driving of compressor and evaporimeter.Existing refrigerating system, the running by the decision of the design temperature in the refrigerating chamber compressor when temperature is low around, can produces and can not obtain normal cold air supply in the refrigerating chamber.
There is following shortcoming in above-mentioned existing refrigerating system: the refrigerating chamber design temperature is than refrigerating chamber design temperature height, according to refrigerating chamber design temperature decision compressor operation refrigerating system, when environment temperature is lower than the design temperature of refrigerating chamber, keep long compressor halted state.At this moment, must keep the refrigerating chamber lower, temperature be risen, cause the food of keeping in refrigerating chamber destroyed because compressor stops to drive than temperature of refrigerating chamber; Be down to zero at ambient temperature when following, temperature of refrigerating chamber also drops to subzero, causes keeping destroyed at the food of refrigerating chamber inside.As a result, existing refrigerating system is down to zero following at ambient temperature, makes refrigerating chamber by sub-cooled, and freezer temperature rises, and the function of refrigerating system can not normally be carried out.
Summary of the invention
The objective of the invention is to avoid weak point of the prior art, can refrigerating chamber and freezer temperature be adjusted in the refrigerating system product that adds state most according to environment temperature and provide a kind of.
Can take following technical scheme to realize purpose.
A kind of refrigerating system comprises: ambient temp sensor, refrigerator temperature sensor; It is characterized in that: the ambient temp sensor that the perception external temperature is set in a side of the external box of microvave of refrigerating system; Be transferred to the converter section of ambient temperature signal from the detected signal of ambient temp sensor; Reception is from the control part of converter section output discernible signal; Driven compressor portion by control part control drive compression machine; Drive the fan drive division of fan by control part control; Drive the heater-driven portion of heater by control part control; Control part by judge from the temperature of ambient temperature signal converter section output environment temperature subzero and compressor last duration of runs under state a period of time before, control part is to heater-driven portion output drive signal, heater generation heat.
Aforesaid refrigerating system wherein also comprises and driven fan of compressor while.
Aforesaid refrigerating system, wherein heater is arranged on the refrigerating chamber lower end.
Aforesaid refrigerating system is before wherein control part judges whether compressor is two hours the last duration of runs.
The relative prior art of the technical program has following advantage and effect:
Is control refrigerating system in basis with the temperature of refrigerating chamber, around the temperature subzero also can make refrigerating chamber temperature maintenance more than design temperature, can regulate the cold air that is fit to refrigerating chamber and refrigerating chamber supply; Can prevent under the temperature effect that around refrigerating chamber sub-cooled and freezer temperature from rising, keep food freshness and long-time keeping, improve the reliability of product.
Description of drawings
Fig. 1 is existing refrigerating system structural representation;
Fig. 2 is a refrigerating system structural representation of the present invention;
Fig. 3 is a refrigerating system control structure schematic diagram of the present invention;
Fig. 4 carries out control procedure figure to refrigerating system when reducing environment temperature among the present invention.
The specific embodiment
In conjunction with the accompanying drawings, embodiment is described in further detail the content of the technical program.
As shown in the figure, this refrigerating system upside is provided with refrigerating chamber 103, and refrigerating chamber 103 downsides are provided with refrigerating chamber 101.Refrigerating chamber 101 1 sides are provided with refrigerator temperature sensor 105, and its effect is to be that the cold air supply is carried out on the basis with the temperature of refrigerating chamber that detects.Refrigerating chamber 101 downsides are provided with Machine Room 119, are provided with in the Machine Room 119 to comprise compressor 107 mechanical devices such as grade; Form certain space between refrigerating chamber 101 and the Machine Room 119, be provided with heater 129 in the space.Refrigerating chamber 101 and refrigerating chamber 103 back are provided with cold air supply stream 109.Cold air supply stream 109 is connected on the evaporimeter 111 of refrigerating chamber 103 back, is provided with fan 113 near the evaporimeter 111, and the cold air that the driving of fan 113 can make evaporimeter 111 produce is supplied to cold air supply stream 109.Cold air supply stream 109 is finished by outlet 117 and 115 to the cold air supply of refrigerating chamber 101 and refrigerating chamber 103.External box of microvave 131 1 sides are provided with the ambient temp sensor 127 of perception external temperature.The 121st, refrigerating-chamber door, the 123rd, the door of refrigerating chamber.
Refrigerating system is by being located at the temperature sensor control cold air supply of refrigerating chamber 101 1 sides.Be passed to ambient temperature signal converter section 152 from ambient temp sensor 127 detected signals, ambient temperature signal converter section 152 converts signal to the control part discernible signal.
The signal that refrigerator temperature sensor 105 detects is passed to temperature of refrigerating chamber signal conversion part 154, and temperature of refrigerating chamber signal conversion part 154 converts signal to control part can identification signal.
The output signal of ambient temperature signal converter section 152 and temperature of refrigerating chamber signal conversion part 154 is input to control part 150, and control part serves as the driving of basis control compressor 107 with the environment temperature and the temperature of refrigerating chamber of input, controlled refrigeration gas supply.
Driven compressor portion 156 is by control part control drive compression machine 107, and the fan drive division drives fan 113 by control part control, and heater-driven portion 160 drives heater 129 by control part control.
Operation process to refrigerating system describes.Identical with prior art, this refrigerating system is to be located at the supply that temperature sensor 105 detected temperature on the refrigerating chamber 101 are basis control cold air.Under the refrigerating system normal operation, environment temperature is above zero the time, the detected temperatures of temperature sensor is input to temperature of refrigerating chamber signal conversion part 154, after the temperature of refrigerating chamber signal conversion part converts signal to the control part discernible signal, is input to control part.Temperature by temperature of refrigerating chamber signal conversion part input is when design temperature is high in the refrigerating chamber, and control part 150 judges that indoor temperatures rise, to driven compressor portion 156 output drive signals.Driven compressor portion receives and drives signal rear drive compressor, is fanned drive division 158 control fans 113 and is driven, and the cold air that evaporimeter 111 produces is supplied to refrigerating chamber and refrigerating chamber by cold air supply stream.When the signal by temperature of refrigerating chamber signal conversion part input is lower than refrigerating chamber inner setting temperature, control part judge hang down than indoor design temperature after, stop the driving of compressor and fan.Do not carry out the cold air supply in these cases.Detect ambient temperature signal after 152 conversions of temperature signal converter section around when the subzero from ambient temp sensor 127, by control part identification environment temperature low after, judge that a control based on temperature of refrigerating chamber can not form normal refrigerating system and drive, so carry out temperature of refrigerating chamber selectivity rising control.
Control part is by judging environment temperature in subzero from the temperature of ambient temperature signal converter section output, judge then the 107 last durations of runs of compressor whether be before two hours of present time, the 200th stage.In these cases, by judging environment temperature at sub-zero state, whether the temperature of refrigerating chamber has continued two hours subzero states.In the 200th stage, environment temperature drops to the subzero compressor when not driving more than two hours, and control part is to heater-driven portion 160 output drive signals.Portion powers up to heater by heater-driven, makes heater produce heat; The heat that heater produces can make temperature rising, the 210th stage that is positioned at the refrigerating chamber on the heater.
In the 210th stage, when temperature of refrigerating chamber rose to a certain degree, control part stopped the heater-driven signal to the output of heater-driven portion, exports drive compression machine signal simultaneously.After driven compressor portion and the driving of fan drive division, compressor and fan row are driven.Afterwards, the cold air that evaporimeter is produced is supplied to refrigerating chamber and refrigerating chamber, keeps suitable frozen state and freezing state, the 220th stage.
To the 210th stage, in order to promote the heater heat production time of temperature of refrigerating chamber, according to till the uniform temperature of certain hour that reaches setting or setting to its control.In other words, be, when temperature is low around, can force to promote temperature of refrigerating chamber, can carry out the running of cold air supply compressor according to the feature of this refrigerating system of the temperature of refrigerating chamber control cold air supply.
Claims (4)
1, a kind of refrigerating system comprises: ambient temp sensor, refrigerator temperature sensor; It is characterized in that: the ambient temp sensor that the perception external temperature is set in a side of the external box of microvave of refrigerating system; Be transferred to the converter section of ambient temperature signal from the detected signal of ambient temp sensor; Reception is from the control part of converter section output discernible signal; Driven compressor portion by control part control drive compression machine; Drive the fan drive division of fan by control part control; Drive the heater-driven portion of heater by control part control;
Control part by judge from the temperature of ambient temperature signal converter section output environment temperature subzero and compressor last duration of runs under state a period of time before, control part is to heater-driven portion output drive signal, heater generation heat.
2, refrigerating system according to claim 1 is characterized in that: also comprise and driven fan of compressor while.
3, according to the described refrigerating system of claim 2, it is characterized in that: heater is arranged on the refrigerating chamber lower end.
4, refrigerating system according to claim 1 is characterized in that: before control part judges whether compressor is two hours the last duration of runs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021005370A CN1189713C (en) | 2002-01-31 | 2002-01-31 | Refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021005370A CN1189713C (en) | 2002-01-31 | 2002-01-31 | Refrigerating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1435628A CN1435628A (en) | 2003-08-13 |
| CN1189713C true CN1189713C (en) | 2005-02-16 |
Family
ID=27627133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021005370A Expired - Fee Related CN1189713C (en) | 2002-01-31 | 2002-01-31 | Refrigerating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1189713C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1766476B (en) * | 2004-10-27 | 2010-04-28 | 泰州乐金电子冷机有限公司 | Low temperature compensating method for refrigerator |
| ITTO20050361A1 (en) * | 2005-05-27 | 2006-11-28 | Itw Ind Components Srl | DEVICE AND METHOD OF CHECKING THE INTERNAL TEMPERATURE OF A REFRIGERATED CELL IN A COMBINED REFRIGERATOR-FREEZER |
| CN102706069B (en) * | 2012-06-14 | 2014-12-10 | 海信容声（扬州）冰箱有限公司 | Refrigerator and control method for temperature-changing chamber of refrigerator |
| CN104061752A (en) * | 2014-04-25 | 2014-09-24 | 合肥华凌股份有限公司 | Control system of refrigerator and refrigerator |
| CN103940195B (en) * | 2014-04-25 | 2016-08-24 | 合肥华凌股份有限公司 | The control method of refrigerator and refrigerator |
| CN103940196B (en) * | 2014-04-25 | 2017-01-11 | 合肥华凌股份有限公司 | Method for controlling refrigerator and refrigerator |
| CN106352647B (en) * | 2016-08-30 | 2019-02-12 | 合肥美的电冰箱有限公司 | Temprature control method and temperature control equipment and refrigerator |
-
2002
- 2002-01-31 CN CNB021005370A patent/CN1189713C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1435628A (en) | 2003-08-13 |
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