CN102410701B - Compartment temperature control method of refrigerator - Google Patents
Compartment temperature control method of refrigerator Download PDFInfo
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- CN102410701B CN102410701B CN 201110335037 CN201110335037A CN102410701B CN 102410701 B CN102410701 B CN 102410701B CN 201110335037 CN201110335037 CN 201110335037 CN 201110335037 A CN201110335037 A CN 201110335037A CN 102410701 B CN102410701 B CN 102410701B
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Abstract
The invention provides a compartment temperature control method of a refrigerator. The compartment temperature control method comprises the following steps of: receiving a first temperature signal detected by a temperature sensor in a compartment of the refrigerator, and judging whether the first temperature signal is in a first temperature interval; if the first temperature signal is in the first temperature interval, judging that the temperature sensor is in a normal state, and controlling a compressor to be started or stopped in a preset way according to the first temperature signal; and if judging that the first temperature signal is not in the first temperature interval, judging that the temperature sensor has a fault, and controlling the compressor to be started and stopped according to a preset stop/start time rate. According to the embodiment of the invention, when the temperature sensor has the fault, the compressor can be controlled to be started and stopped normally so as to prevent the compartment temperature fluctuation from being overlarge, and compartment function failure is avoided.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, particularly a kind of room temperature degree control method of refrigerator.
Background technology
At present, automatically controlled refrigerator all is the temperature of gathering each chamber of refrigerator by temperature sensor, controls the startup-shutdown of compressor, thus the temperature of chamber between control.When if temperature sensor breaks down, freezer compressor will be started shooting always or be shut down always, and it is low or too high that the refrigerator room temperature is spent, thereby influenced the fresh-keeping and freezing function of refrigerator.And if compressor start shooting for a long time can influence life-span of compressor.
The startup-shutdown of freezer compressor is gathered the room temperature degree by temperature sensor and is controlled.As shown in Figure 1, the temperature of chamber was passed to single-chip microcomputer 120 ' then between temperature sensor 110 ' was gathered in real time, and single-chip microcomputer 120 ' makes a decision for the temperature that collects.During the temperature of chamber start point, compressor 130 ' is opened between temperature that temperature sensor 110 ' is gathered is greater than refrigerator; During the temperature of chamber break point, compressor 130 ' is shut down between temperature that temperature sensor 110 ' is gathered is less than refrigerator.
When running into temperature sensor 110 ' and break down, the temperature that temperature sensor 110 ' is gathered will become or be high or extremely low.When extreme temperatures that temperature sensor 110 ' collects, the temperature that temperature sensor 110 ' is gathered is just always greater than the turn-on temperature of compressor 130 ', thereby compressor 130 ' is being headed straight for, influence the life-span of refrigerator, and a chamber actual temperature will become very low, the icing phenomenon of refrigerating chamber may occur.When the temperature that collects when temperature sensor 110 ' is extremely low; the temperature that temperature sensor 110 ' is gathered is just always less than the shutdown temperature of compressor 130 '; compressor 130 ' is shut down always; cause the actual temperature of a chamber to raise gradually; until reaching room temperature, make the disabler such as fresh-keeping freezing grade of refrigerator.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least.
For this reason, the objective of the invention is to propose a kind of when temperature sensor breaks down, it is excessive to prevent room temperature degree fluctuation normally to control the compressor startup-shutdown, avoids the room temperature degree control method of a refrigerator of chamber disabler.
To achieve these goals, the embodiment of the invention has proposed a kind of room temperature degree control method of refrigerator, may further comprise the steps: receive come from be arranged on refrigerator between first temperature signal that detects of indoor temperature sensor, judge whether described first temperature signal is in first temperature range; Be positioned at described first temperature range if judge described first temperature signal, judge that then described temperature sensor is in normal condition, and start according to predetermined way or close according to described first temperature signal control compressor; And if judge that described first temperature signal not in described first temperature range, judges that then described temperature sensor breaks down, and control described compressor and start according to the predetermined time ratio of closing/starting and close.
Room temperature degree control method according to the refrigerator of the embodiment of the invention, judge by first indoor between temperature sensor the is collected temperature signal (Current Temperatures signal), whether not only can detect temperature sensor breaks down, can also be under the situation that temperature sensor breaks down, between can not correctly collecting during indoor Current Temperatures signal, be that the Current Temperatures signal may be very high or very low, can control compressor according to the predetermined time ratio of closing/starting operation, move another time period after namely controlling the every interval of compressor certain hour section.Thus, avoid a fluctuations in indoor temperature bigger, indoor temperature fluctuates in less relatively temperature range between making, the storage function of chamber is normal between having guaranteed.In addition, prevent that compressor is in off-mode or starting state always, that avoids on the one hand a chamber fresh-keeping freezingly waits disabler, avoids the compressor continuous firing to cause it to continue power consumption and shortening in service life on the other hand, effectively reduces the maintenance cost of refrigerator.
In addition, the room temperature degree control method of refrigerator according to the above embodiment of the present invention can also have following additional technical characterictic:
In one embodiment of the invention, described first temperature range comprises first ceiling temperature and first lower limit temperature, and described first ceiling temperature is positioned between [30 ℃, 50 ℃], and described first lower limit temperature is positioned between [50 ℃ ,-30 ℃].
In one embodiment of the invention, described first ceiling temperature is 50 ℃, and described first lower limit temperature is-50 ℃.
In one embodiment of the invention, when described first temperature signal is positioned at described first temperature range, judge whether described first temperature signal is in second temperature range, be lower than second lower limit temperature if judge described first temperature, the compressor of then controlling described refrigerator stops; Be higher than second ceiling temperature if judge described first temperature signal, then control the compressor start of described refrigerator; And if judge described first temperature signal between second lower limit temperature and second ceiling temperature, the compressor of then controlling described refrigerator keeps current state.
In one embodiment of the invention, second temperature range comprises second lower limit temperature and second ceiling temperature, and second ceiling temperature is positioned between [4 ℃, 6 ℃], and second lower limit temperature is positioned between [0 ℃, 2 ℃].
In one embodiment of the invention, when described first temperature signal be not in first temperature range and control that described compressor starts according to the predetermined time ratio of cutting out/starting and the process of closing in, if becoming, the detected first current temperature signal of temperature sensor is positioned at described first temperature range, judge that then the fault of described temperature sensor gets rid of, and convert to according to the detected first current temperature signal control of described temperature sensor compressor and start according to predetermined way or close.
The time ratio of described predetermined closing in one embodiment of the invention ,/start is 2: 3 proportionate relationship.
In one embodiment of the invention, in the time ratio of described predetermined closing/start, the time of at every turn closing is positioned between [15min, 25min].
In one embodiment of the invention, described temperature sensor sends to detected described the indoor first current temperature signal controller of described refrigerator, and by the controller of described refrigerator the described first current temperature signal and described first temperature range and described second temperature range are compared, and the compressor of controlling described refrigerator according to comparative result is carried out according to corresponding mode.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the room temperature degree control flow schematic diagram of refrigerator in the prior art; And
Fig. 2 is the control flow chart of room temperature degree control method of the refrigerator of one embodiment of the invention.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical or similar label is represented identical or similar elements or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center "; " vertically "; " laterally "; " on "; D score; " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", close the orientation of indications such as " outward " or position is based on orientation shown in the drawings or position relation, only be that the present invention for convenience of description and simplification are described, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance.
In description of the invention, need to prove that unless clear and definite regulation and restriction are arranged in addition, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be fixedly connected, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete implication in the present invention.
Below in conjunction with the room temperature degree control method of accompanying drawing 2 descriptions according to the refrigerator of the embodiment of the invention.
As shown in Figure 2, be the control flow chart of the room temperature degree control method of the refrigerator of one embodiment of the invention.The room temperature degree control method of the refrigerator of the embodiment of the invention may further comprise the steps:
Step S101, receive come from be arranged on refrigerator between first temperature signal that detects of indoor temperature sensor.In an example of the present invention, indoor temperature sensor indoor first temperature signal (Current Temperatures of a chamber) between detecting constantly between refrigerator, and the detected first current temperature signal is sent to the controller (single-chip microcomputer) of refrigerator.
Step S102 judges whether described first temperature signal is in first temperature range.
In one embodiment of the invention, controller (single-chip microcomputer) by refrigerator compares the described first current temperature signal and described first temperature range, first temperature range comprises two critical-temperatures, as long as first temperature signal and two critical-temperatures are compared, just can judge first temperature signal and whether be in first temperature range.
As in an example of the present invention, first temperature range comprises first ceiling temperature (critical-temperature) and first lower limit temperature (another critical-temperature), and described first ceiling temperature is positioned between [30 ℃, 50 ℃], described first lower limit temperature is positioned between [50 ℃ ,-30 ℃].Suppose that first ceiling temperature is 40 ℃, first lower limit temperature is-30 ℃, if judge first temperature signal less than first lower limit temperature-30 ℃ or judge that first temperature signal is 40 ℃ greater than first ceiling temperature, judge that then first temperature signal is not in first temperature range, otherwise, if first temperature signal is 40 ℃ greater than first lower limit temperature-30 ℃ and first temperature signal less than first ceiling temperature, then is judged to be first temperature signal and is in first temperature range.
Advantageously, first ceiling temperature is 50 ℃, and first lower limit temperature is-50 ℃.First ceiling temperature that occurs in following examples and first lower limit temperature are 50 ℃ with first ceiling temperature all, and first lower limit temperature is described as example for-50 ℃ situation.
Step S103 is positioned at described first temperature range if judge described first temperature signal, judges that then described temperature sensor is in normal condition, and starts according to predetermined way or close according to described first temperature signal control compressor.
Being controller ℃ compares first temperature signal and 50 ℃ of first ceiling temperatures and first lower limit temperature-50, the judged result of this step is that first temperature signal is higher than first lower limit temperature-50 ℃, and first temperature signal is lower than 50 ℃ of first ceiling temperatures, at this moment, controller judges that detected first temperature signal of temperature sensor is normal, indoor current actual temperature between being.
Do not break down in case judge temperature sensor, one embodiment of the present of invention will start according to predetermined way or close according to first temperature signal control compressor.Particularly, predetermined way may further comprise the steps:
1, controller will continue to judge whether first temperature signal is in second temperature range, understand easily, second temperature range is positioned at first temperature range, judge whether first temperature signal is in second temperature range, can obtain comparative result by first temperature letter is compared with second lower limit temperature of presetting and second ceiling temperature, similarly, second ceiling temperature should be higher than second lower limit temperature.
Also two critical-temperatures that second lower limit temperature and second ceiling temperature of above-described embodiment can be defined as second temperature range, that is to say that second temperature range has comprised two critical-temperatures, i.e. second lower limit temperature and second ceiling temperature, in an example of the present invention, second ceiling temperature can be arranged on [4 ℃, 6 ℃] between, second lower limit temperature is arranged between [0 ℃, 2 ℃].Like this, only need first temperature signal and second ceiling temperature and second lower limit temperature are compared, can judge first temperature signal easily and whether be in second temperature range.
In fact second ceiling temperature is the start point temperature of chamber between refrigerator, and second lower limit temperature is the break point temperature of refrigerator.Advantageously, second ceiling temperature is 5 ℃, and second lower limit temperature is 2 ℃.Second ceiling temperature in following examples and second lower limit temperature are 5 ℃ with second ceiling temperature all, and second lower limit temperature is that 2 ℃ situation is described.The process that first temperature signal and first temperature range compare in the method that first temperature signal and second temperature range are compared and above-described embodiment is similar, in order to reduce redundancy, does not do and gives unnecessary details.
If 2 judge that described first temperature signal is lower than described second lower limit temperature; the compressor of then controlling described refrigerator stops; if be the break point temperature that indoor Current Temperatures was lower than a chamber between controller was judged, will control compressor so and stop refrigeration to a chamber.
If 3 judge that described first temperature signal is higher than described second ceiling temperature, then controls the compressor start of described refrigerator.When the Current Temperatures of chamber was higher than the start point temperature of a chamber namely, controller control compressor freezed to a chamber.
If 4 judge described first temperature signal between described second lower limit temperature and described second ceiling temperature, the compressor of then controlling described refrigerator keeps current state.That is to say that if compressor cooling after a period of time, an indoor temperature then keeps at this moment compressor cooling from being higher than between the start point near start point temperature of temperature and the break point temperature.Otherwise an indoor Current Temperatures is increased between break point temperature and the start point temperature from being lower than the break point temperature, then keeps the compressor closed condition this moment.
In fact, above-mentioned steps is control compressor start and the method for closing under the temperature sensor situation about not breaking down, namely when temperature sensor does not break down, its control compressor start and the method for closing are not limited to this, the mode that also can adopt other control compressor starts in the existing method and close is carried out, and the present invention is to this not restriction.
Step S104 not in described first temperature range, judges then that described temperature sensor breaks down if judge described first temperature signal, and controls described compressor and start according to the predetermined time ratio of closing/starting and close.Namely first temperature signal is lower than first lower limit temperature-50 ℃ or first temperature signal is higher than 50 ℃ of first ceiling temperatures.First lower limit temperature and first ceiling temperature obtain through overtesting, the mode of the temperature of chamber is tested and is obtained between namely detecting by the temperature sensor that breaks down, certainly, for different temperature sensors, the detected room temperature degree of its gas when breaking down difference, therefore, can determine occurrence or the scope of first ceiling temperature and first lower limit temperature according to actual conditions.
Generally speaking, indoor temperature can not be lower than first lower limit temperature-50 ℃ or be higher than 50 ℃ of first ceiling temperatures between refrigerator, therefore, when temperature sensor collect between the temperature of chamber continue be lower than first lower limit temperature-50 ℃ or continue be higher than 50 ℃ of first ceiling temperatures time, break down for temperature sensor probably, indoor actual temperature between can not correctly collecting, at this moment, compressor is controlled according to the described mode of above-mentioned steps S103 if continue, then will cause compressor not start all the time or be in starting state always, because if temperature sensor collect between the chamber temperature for continue be higher than 50 ℃ of first ceiling temperatures time, because 50 ℃ of start point temperature that are higher than a chamber of first ceiling temperature, then the compressor of refrigerator will continue to start, cause actual temperature indoor between refrigerator continue to reduce, to such an extent as to drop to very low, indoor freezing between causing, refrigerator is caused the service life of loss and shortening compressor, and continue power consumption.On the contrary, if temperature sensor collect between the chamber temperature for continue be lower than first lower limit temperature-50 ℃ the time, compressor will not start all the time, causes the room temperature degree to continue rising and final identical with the place environment temperature, the afunction of the fresh-keeping refrigeration in chamber between making.
Therefore, as one embodiment of the present of invention, when temperature sensor breaks down, start according to the predetermined time ratio of closing/starting and close by the control compressor, so that compressor cycle ground starts and closes, the actual temperature of chamber fluctuates and reduces between assurance, can guarantee that namely compressor has enough cutting out the time of having a rest, avoid the compressor continuous firing to cause infringement, guarantee the interior fluctuation of temperature range of room temperature degree refrigerating fresh-keeping simultaneously again, avoid the fresh-keeping refrigerating function forfeiture in a chamber.
In one embodiment of the invention, the predetermined time ratio of closing/starting is 2: 3 proportionate relationship, and advantageously, the time of at every turn closing is positioned between [15min, 25min].That is to say, when temperature sensor breaks down, if the shut-in time in the time ratio of predefined closing/start is 20min, then according to 2: 3 proportionate relationship, the time that can obtain starting is 30min, starts 30 minutes after namely compressor whenever cuts out and stopped to freeze in 20 minutes and is freezed in a chamber.Thus, prevent that namely the fluctuation of room temperature degree is excessive, the refrigerating fresh-keeping function of chamber has been protected compressor again between assurance, has reduced the maintenance cost of refrigerator.
Advantageously, in the above-described embodiments, when the described compressor of control start according to the predetermined time ratio of closing/starting and the process of closing in, if becoming, the detected first current temperature signal of temperature sensor is positioned at described first temperature range, judge that then the fault of described temperature sensor gets rid of, and convert to according to the detected first current temperature signal control of described temperature sensor compressor and start according to predetermined way or close.That is to say that after temperature sensor breaks down, if fault is investigated, temperature sensor can correctly detect the temperature of a chamber, at this moment, controller will be controlled compressor and according to the mode of above-mentioned steps S103 compressor be controlled.
Room temperature degree control method according to the refrigerator of the embodiment of the invention, judge by first indoor between temperature sensor the is collected temperature signal (Current Temperatures signal), whether not only can detect temperature sensor breaks down, can also be under the situation that temperature sensor breaks down, between can not correctly collecting during indoor Current Temperatures signal, be that the Current Temperatures signal may be very high or very low, can control compressor according to the predetermined time ratio of closing/starting operation, move another time period after namely controlling the every interval of compressor certain hour section.Thus, avoid a fluctuations in indoor temperature bigger, indoor temperature fluctuates in less relatively temperature range between making, the storage function of chamber is normal between having guaranteed.In addition, prevent that compressor is in off-mode or starting state always, that avoids on the one hand a chamber fresh-keeping freezingly waits disabler, avoids the compressor continuous firing to cause it to continue power consumption and shortening in service life on the other hand, effectively reduces the maintenance cost of refrigerator.
In the description of this specification, concrete feature, structure, material or characteristics that the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example description are contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete feature, structure, material or the characteristics of description can be with the suitable manner combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiment under the situation that does not break away from principle of the present invention and aim, scope of the present invention is by claim and be equal to and limit.
Claims (8)
1. the room temperature degree control method of a refrigerator is characterized in that, may further comprise the steps:
Reception come from be arranged on refrigerator between first temperature signal that detects of indoor temperature sensor,
Judge whether described first temperature signal is in first temperature range;
Be positioned at described first temperature range if judge described first temperature signal, judge that then described temperature sensor is in normal condition, and start according to predetermined way or close according to described first temperature signal control compressor; And
Not in described first temperature range, judge then that described temperature sensor breaks down if judge described first temperature signal, and control described compressor and start according to the predetermined time ratio of closing/starting and close.
2. the room temperature degree control method of refrigerator according to claim 1 is characterized in that, described first temperature range comprises first ceiling temperature and first lower limit temperature, described first ceiling temperature is positioned at [30 ℃, 50 ℃] between, described first lower limit temperature is positioned between [50 ℃ ,-30 ℃].
3. the room temperature degree control method of refrigerator according to claim 2 is characterized in that, described first ceiling temperature is 50 ℃, and described first lower limit temperature is-50 ℃.
4. the room temperature degree control method of refrigerator according to claim 2 is characterized in that, when described first temperature signal is positioned at described first temperature range, judges whether described first temperature signal is in second temperature range,
Be lower than second lower limit temperature if judge described first temperature signal, the compressor of then controlling described refrigerator stops;
Be higher than second ceiling temperature if judge described first temperature signal, then control the compressor start of described refrigerator;
If judge described first temperature signal between second lower limit temperature and second ceiling temperature, the compressor of then controlling described refrigerator keeps current state,
Wherein, described second temperature range comprises second ceiling temperature and second lower limit temperature, and described second ceiling temperature is positioned between [4 ℃, 6 ℃], and described second lower limit temperature is positioned between [0 ℃, 2 ℃].
5. the room temperature degree control method of refrigerator according to claim 1, it is characterized in that, when described first temperature signal be not in first temperature range and control that described compressor starts according to the predetermined time ratio of cutting out/starting and the process of closing in, if becoming, the detected first current temperature signal of temperature sensor is positioned at described first temperature range, judge that then the fault of described temperature sensor gets rid of, and convert to according to the detected first current temperature signal control of described temperature sensor compressor and start according to predetermined way or close.
6. the room temperature degree control method of refrigerator according to claim 1 is characterized in that, the time ratio of described predetermined closing/start is the proportionate relationship of 2:3.
7. the room temperature degree control method of refrigerator according to claim 6 is characterized in that, in the time ratio of described predetermined closing/start, the time of at every turn closing is positioned between [15min, 25min].
8. the room temperature degree control method of refrigerator according to claim 4, it is characterized in that, described temperature sensor sends to detected described the indoor first current temperature signal controller of described refrigerator, and by the controller of described refrigerator the described first current temperature signal and described first temperature range and described second temperature range are compared, and the compressor of controlling described refrigerator according to comparative result is carried out according to corresponding mode.
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| CN 201110335037 CN102410701B (en) | 2011-10-28 | 2011-10-28 | Compartment temperature control method of refrigerator |
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| CN103353206A (en) * | 2013-07-26 | 2013-10-16 | 合肥美的电冰箱有限公司 | Refrigerator and fault detecting method and control method thereof |
| CN104089461A (en) * | 2014-07-18 | 2014-10-08 | 合肥美菱股份有限公司 | Refrigeration control method for electric control air cooling refrigerator fault |
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