CN100383483C - Refrigerator and control method thereof - Google Patents
Refrigerator and control method thereof Download PDFInfo
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- CN100383483C CN100383483C CNB2005100635250A CN200510063525A CN100383483C CN 100383483 C CN100383483 C CN 100383483C CN B2005100635250 A CNB2005100635250 A CN B2005100635250A CN 200510063525 A CN200510063525 A CN 200510063525A CN 100383483 C CN100383483 C CN 100383483C
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Abstract
The present invention relates to a refrigerator which at least comprises a compressor, a condenser, an evaporator for a refrigerating chamber, an evaporator for a freezing chamber, an electromagnetic valve, a connection pipeline connected with the electromagnetic valve, and a control device used for controlling the compressor, the condenser, the evaporator for the refrigerating chamber, the evaporator for the freezing chamber, the electromagnetic valve and the connection pipeline connected with the electromagnetic valve, wherein the electromagnetic valve carries out switching between the evaporator for the refrigerating chamber and the evaporator for the freezing chamber to enable refrigerant to flow through the evaporator for the refrigerating chamber or not. The refrigerator also comprises a temperature detector which is connected with the control device, is used for detecting the temperature of the evaporator for the refrigerating chamber or the refrigerating chamber, and sends the detected temperature to the control device. When the detected temperature is higher than the preset temperature, the control device can send a switching signal to the electromagnetic valve; when the detected temperature is not higher than preset temperature, the control device sends switching signals to the electromagnetic valve continuously or at a preset time interval. The electromagnetic valve is in a right operating state according to the control signals under the control of the control device, and the supercooling failure or no refrigeration failure can be prevented from occurring. The present invention also relates to a control method for the refrigerator.
Description
Technical field
The present invention relates to a kind of refrigerator and control method thereof, more particularly, the present invention relates to a kind of refrigerator and control method thereof that has refrigerating chamber and refrigerating chamber.
Background technology
In the prior art, two-door or two-door above refrigerator generally includes refrigerating chamber and refrigerating chamber.The temperature of refrigerating chamber and refrigerating chamber comparatively speaking, the temperature of refrigerating chamber is higher, be applicable to short-term storage, and the temperature of refrigerating chamber is lower, is suitable for the storage of long period.
Have the direct-cooled of refrigerating chamber and refrigerating chamber or a direct cooling refrigerator comprises compressor at least, condenser, magnetic valve, refrigerator evaporator, freezer evaporator, magnetic valve and the connecting line that is connected these parts also comprise control device, and these parts are controlled.Magnetic valve can switch between refrigerator evaporator and freezer evaporator, flow back to after making refrigerant flow through refrigerator evaporator and freezer evaporator, perhaps do not flow through refrigerator evaporator and flow back to after directly flowing through freezer evaporator, thereby make the refrigerating chamber refrigeration or do not freeze.
Fig. 2 illustrates the working condition of the refrigerator of the band refrigeration of prior art and refrigerating chamber.As shown in Figure 2, duty at refrigerator, detector detects the temperature of refrigerating chamber, and the temperature that detects passed to control device, control device compares detected temperatures and design temperature, and when detected temperatures was higher than high design temperature, the state of temperature of determining refrigerating chamber was for high, when detected temperatures was lower than low design temperature, the state of temperature of determining refrigerating chamber was low.Check the state of the temperature of the refrigerating chamber of determining last time just of the storage of memory in the control device then, to judge whether and to send switching signal to magnetic valve.At this specification, switching signal is exactly control device switches to refrigerator evaporator or a control signal from freezer evaporator to the control magnetic valve of magnetic valve transmission.If the state of temperature of the state of temperature of refrigerating chamber and control device storage at this moment is inequality, control device sends switching signal to magnetic valve, and the state of temperature that stores in the update control apparatus, and magnetic valve switches according to the switching signal of control device.For example, suppose that state of temperature that control device determines refrigerating chamber according to detected temperatures is for high, and the state of temperature of storage is low, control device is updated to height with the state of temperature of storage, and sends switching signal to magnetic valve, and magnetic valve switches to refrigerator evaporator according to the switching signal that control device sends from freezer evaporator, in the case, refrigerant flows through refrigerator evaporator and freezer evaporator, refrigerator evaporator work, refrigerating chamber refrigeration.Suppose that control device determines that according to detected temperatures the state of temperature of refrigerating chamber is low, and the state of temperature of storage is high, control device is updated to the state of temperature of storage low, and to magnetic valve transmission switching signal, magnetic valve switches to freezer evaporator according to the switching signal that control device sends from refrigerator evaporator, and in the case, refrigerant does not flow through refrigerator evaporator, refrigerator evaporator is not worked, and refrigerating chamber does not freeze.If the state of temperature of refrigerating chamber is identical with the state of temperature of control device storage, control device does not send switching signal to magnetic valve, and magnetic valve does not switch, and remains on original switching state.
But there is the interference in many external worlds in actual use, disturbs or extraneous radiation interference as power supply, or the like.These interference may cause the misoperation of magnetic valve, and as not sending at control device under the situation of switching signal, magnetic valve switches because of being subjected to external interference.For example, after magnetic valve switches to refrigerator evaporator according to the switching signal of control device, if the state of temperature of refrigerating chamber still is high, control device does not send switching signal, and magnetic valve should not switch, but misoperation may take place owing to be interfered in magnetic valve, get back to freezer evaporator and switch, refrigerant does not flow through refrigerator evaporator as a result, and refrigerator evaporator does not freeze, in fact refrigerating chamber is in the state that does not freeze, and the state of temperature of refrigerating chamber still is high.In the case, according to prior art, control device does not send switching signal, magnetic valve should switch to refrigerator evaporator and reality switches to freezer evaporator, and refrigerant does not flow through refrigerator evaporator, and in fact refrigerator evaporator does not freeze, like this, the temperature of refrigerating chamber is more and more higher.Again for example, after magnetic valve switches to freezer evaporator according to the switching signal of control device, if the state of temperature of refrigerating chamber still is low, control device does not send switching signal, and magnetic valve should not switch, if but misoperation takes place in magnetic valve owing to being interfered, switch to refrigerator evaporator, refrigerant flows through refrigerator evaporator, and in fact refrigerating chamber is in refrigerating state, the temperature of refrigerating chamber will be more and more lower, or the like.That is to say, misoperation takes place owing to being subjected to external interference in magnetic valve, the actual switching state of magnetic valve and its switching state that should be in are inconsistent, magnetic valve is not in correct switching state according to the switching signal of control device, refrigerator evaporator should freeze but not freeze, or should not freeze but freeze, cause refrigerating chamber phenomenon too high or too low for temperature to occur, the work of refrigerator occurs unusual.
Therefore, need a kind of refrigerator that also can operate as normal under external interference, it can correct the misoperation of magnetic valve, guarantees that magnetic valve handles correct duty, gets rid of the adverse effect of external interference to refrigerator, avoids occurring refrigerating chamber and crosses cold or overheated fault etc.
Summary of the invention
An object of the present invention is to provide a kind of refrigerator, it can guarantee the correct switching state of magnetic valve processing, gets rid of to disturb to make the refrigerator operate as normal, avoids occurring refrigerating chamber and crosses cold or overheated phenomenon.
One object of the present invention is to provide a kind of control method of refrigerator, this method can in time be corrected the misoperation of magnetic valve, guarantee that magnetic valve is in correct operating position,, avoid occurring refrigerating chamber and cross cold or overheated fault even make the refrigerator also can operate as normal under external interference.
The invention provides a kind of refrigerator, described refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and the connecting line that between them, connects, and the control device that above-mentioned parts are controlled, wherein, described magnetic valve switches between described refrigerator evaporator and described freezer evaporator, flow back to after making refrigerant flow through described refrigerator evaporator and described freezer evaporator, perhaps do not flow through described refrigerator evaporator and flow back to after directly flowing through described freezer evaporator, it is characterized in that: described control device sends switching signal to described magnetic valve continuously or with the time interval of setting.
The invention provides a kind of refrigerator, described refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and the connecting line that between them, connects, and the control device that above-mentioned parts are controlled, wherein, described magnetic valve switches between described refrigerator evaporator and described freezer evaporator, flow back to after making refrigerant flow through described refrigerator evaporator and described freezer evaporator, perhaps do not flow through described refrigerator evaporator and flow back to after directly flowing through described freezer evaporator, described refrigerator also comprises Temperature Detector, be used to detect the temperature of described refrigerator evaporator or refrigerating chamber, described Temperature Detector links to each other with control device, detected temperatures is sent to described control device, it is characterized in that: when described detected temperatures is crossed the design temperature scope, described control device sends switching signal to described magnetic valve, and do not cross in described detected temperatures under the situation of described design temperature scope, described control device sends switching signal to described magnetic valve continuously or with the time interval of setting.
Refrigerator of the present invention is not crossed in described detected temperatures under the situation of described design temperature scope, and described control device sends the switching signal identical with last time to described magnetic valve.
Refrigerator of the present invention is not crossed in described detected temperatures under the situation of described design temperature scope, and described control device sends switching signal with the time interval of setting to described magnetic valve, and described switching signal is an initializing signal.
Refrigerator of the present invention, do not cross in described detected temperatures under the situation of described design temperature scope, described control device with time interval of setting before described magnetic valve sends switching signal, described control device judges whether described magnetic valve occurs unusually, when described magnetic valve occurs when unusual, described control device sends switching signal to described magnetic valve.
The present invention also provides a kind of refrigerator, described refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and the connecting line that between them, connects, and the control device that above-mentioned parts are controlled, wherein, described magnetic valve switches between described refrigerator evaporator and described freezer evaporator, flow back to after making refrigerant flow through described refrigerator evaporator and described freezer evaporator, perhaps do not flow through described refrigerator evaporator and flow back to after directly flowing through described freezer evaporator, described refrigerator also comprises Temperature Detector, be used to detect the temperature of described refrigerator evaporator or refrigerating chamber, described Temperature Detector links to each other with described control device, detected temperatures is sent to described control device, it is characterized in that: described control device is determined the state of temperature of described refrigerator evaporator or refrigerating chamber according to described detected temperatures, when changing, the state of temperature of described refrigerator evaporator or refrigerating chamber sends switching signal to described magnetic valve, under the situation that the state of temperature of described refrigerator evaporator or refrigerating chamber does not change, send switching signal to described magnetic valve continuously or with the time interval of setting.
In refrigerator of the present invention, described refrigerator comprises audio frequency and/or video alarm device, link to each other with described control device, described control device comprises counter, write down the number of times that described control device sends same control signal always, when this number of times reached pre-determined number, described control device sent fault-signal, and described warning is reported to the police.
The present invention also provides a kind of control method of refrigerator, described refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and the connecting line that between them, connects, and the control device that above-mentioned parts are controlled, wherein, described magnetic valve switches between described refrigerator evaporator and described freezer evaporator, flow back to after making refrigerant flow through described refrigerator evaporator and described freezer evaporator, perhaps do not flow through described refrigerator evaporator and flow back to after directly flowing through described freezer evaporator, it is characterized in that: described control method comprises that described control device continuously or send the step of switching signal to described magnetic valve with the time interval of setting.
The present invention also provides a kind of control method of refrigerator, described refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and the connecting line that between them, connects, and the control device that above-mentioned parts are controlled, wherein, described magnetic valve switches between described refrigerator evaporator and described freezer evaporator, flow back to after making refrigerant flow through described refrigerator evaporator and described freezer evaporator, perhaps do not flow through described refrigerator evaporator and flow back to after directly flowing through described freezer evaporator, described refrigerator also comprises the Temperature Detector that links to each other with described control device, described method comprises step: described Temperature Detector detects the temperature of refrigerator evaporator or refrigerating chamber, and detected temperatures is sent to described control device; With when described detected temperatures is crossed the design temperature scope, described control device sends switching signal to described magnetic valve, do not cross in described detected temperatures under the situation of described design temperature scope, described control device sends switching signal to described magnetic valve continuously or with the time interval of setting.
In control method of refrigerator of the present invention, described method comprises step: do not cross in described detected temperatures under the situation of described design temperature scope, described control device sends the switching signal identical with last time to described magnetic valve.
At refrigerator of the present invention, described method comprises step: do not cross in described detected temperatures under the situation of described design temperature scope, described control device sends switching signal with the time interval of setting to described magnetic valve, and described switching signal is an initializing signal.
In control method of refrigerator of the present invention, it is characterized in that, described method comprises step, do not cross in described detected temperatures under the situation of described design temperature scope, described control device with time interval of setting before described magnetic valve sends switching signal, described control device judges whether described magnetic valve occurs unusually, and when described magnetic valve occurs when unusual, described control device sends switching signal to described magnetic valve.
The present invention also provides a kind of control method of refrigerator, described refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and the connecting line that between them, connects, and the control device that above-mentioned parts are controlled, wherein, described magnetic valve switches between described refrigerator evaporator and described freezer evaporator, flow back to after making refrigerant flow through described refrigerator evaporator and described freezer evaporator, perhaps do not flow through described refrigerator evaporator and flow back to after directly flowing through described freezer evaporator, described refrigerator also comprises the Temperature Detector that links to each other with described control device, described method comprises step: described Temperature Detector detects the temperature of described refrigerator evaporator or refrigerating chamber, and detected temperatures is sent to described control device; Described control device determines that according to described detected temperatures the state of temperature of refrigerating chamber still is low for height; When changing with state of temperature when described refrigerator evaporator or refrigerating chamber, described control device sends switching signal to described magnetic valve, under the situation that the state of temperature of described refrigerator evaporator or refrigerating chamber beginning does not change, described control device sends switching signal to described magnetic valve continuously or with the time interval of setting.
In the control method of the present invention, refrigerator comprises audio frequency and/or video alarm device, and described method further comprises step: by the counter that described control device comprises, write down the transmission number of times that described control device sends same control signal all the time; With when this number of times reaches pre-determined number, described control device sends fault-signal, and described warning device is reported to the police.
Compared with prior art, refrigerator of the present invention and control method thereof can in time be corrected the misoperation of magnetic valve, guarantee the correct switching state of magnetic valve processing, even make the refrigerator also can operate as normal under external interference, it is unusual that thereby the work that prevents refrigerator occurs, and avoids occurring refrigerating chamber and cross cold or overheated phenomenon.
Description of drawings
Fig. 1 illustrates the schematic diagram of the refrigerator that has refrigerating chamber and refrigerating chamber;
Fig. 2 illustrates the working condition of the refrigerator of prior art;
Fig. 3 is the schematic diagram of the working condition of refrigerator according to an embodiment of the invention;
Fig. 4 is the schematic diagram of refrigerator work situation in accordance with another embodiment of the present invention;
Fig. 5 is the schematic diagram of refrigerator work situation in accordance with another embodiment of the present invention;
Fig. 6 is the schematic diagram of refrigerator work situation in accordance with another embodiment of the present invention;
Fig. 7 is the schematic diagram of refrigerator work situation in accordance with another embodiment of the present invention;
Fig. 8 is the schematic diagram of the working condition of refrigerator according to an embodiment of the invention;
Fig. 9 illustrates the schematic diagram of control method of the present invention according to an embodiment of the invention.
The specific embodiment
Fig. 1 illustrates the schematic diagram of the refrigerator that has refrigerating chamber and refrigerating chamber.In the present invention, refrigerator comprises compressor 1 at least, condenser 2, magnetic valve 3, refrigerator evaporator 4, freezer evaporator 5, expansion gear 7 and the connecting line 6 that is connected these parts.Refrigerator also can comprise control device 100, and above-mentioned parts are controlled.Control device 100 sends switching signal to magnetic valve 3 serially or by the time interval of setting.
In refrigerator of the present invention, control device 100 sends switching signal to magnetic valve 3 serially or by the time interval of setting, magnetic valve can switch between refrigerator evaporator and freezer evaporator 5 according to the switching signal that control device 100 sends, flow back to after making refrigerant flow through refrigerator evaporator 4 and freezer evaporator 5, perhaps do not flow through described refrigerator evaporator 4 and flow back to after directly flowing through freezer evaporator 5.For example, switch at magnetic valve 3 under the situation of refrigerator evaporator, refrigerant by magnetic valve 3 and expansion gear 7, flows through refrigerator evaporator 4 and freezer evaporator 5 from compressor 1, gets back to compressor 1 then, shown in the arrow A among Fig. 1.In the case, because refrigerant flows through refrigerator evaporator, refrigerator evaporator refrigeration, refrigerating chamber refrigeration.Again for example, switch at magnetic valve 3 under the situation of freezer evaporator 5, refrigerant is from compressor 1, by magnetic valve 3 and expansion gear 8, do not flow through refrigerator evaporator 4, but get back to compressor 1 after flowing directly to freezer evaporator 5, shown in the arrow B among Fig. 1.In the case, because refrigerant does not flow through refrigerator evaporator 4, refrigerator evaporator 4 does not freeze, and refrigerating chamber does not freeze.
Referring now to Fig. 3, Fig. 3 illustrates according to one embodiment of present invention, and in refrigerator of the present invention, control device 100 sends switching signal by the time interval of setting to magnetic valve 3.As shown in Figure 3, after refrigerator was started working, control device 100 sent switching signal to magnetic valve, makes correct switching state under magnetic valve 3 places, and then, control device 100 sends switching signal to magnetic valve 3 once more through the time interval of setting.So move in circles, guarantee that magnetic valve is in correct switching state.In the present embodiment, control device 100 is pressed setting-up time and is sent switching signal to magnetic valve 3 at interval, and the switching signal that magnetic valve 3 is sent according to control device 100 is carried out corresponding action and is in correct switching state.Certainly, control device 100 also sends switching signal to magnetic valve 3 serially, gets rid of magnetic valve 3 at any time because of the contingent misoperation of external interference, makes magnetic valve 3 be in correct switching state.
In the present invention, because control device 100 sends switching signal to magnetic valve 3 continuously or by the time interval of setting, make magnetic valve 3 receive that control device 100 sends switching signal at any time or in the time interval of setting, and carry out corresponding action according to switching signal and be in correct switching state, correct magnetic valve because of the contingent misoperation that is interfered, guarantee that magnetic valve 3 is in correct switching state, and then prevent that refrigerator work is unusual.
Continuation is with reference to Fig. 1, and refrigerator of the present invention also can comprise checkout gear 200.Checkout gear 200 links to each other with control device 100, is used to detect the temperature of refrigerator evaporator 4 or refrigerating chamber, and sends the temperature that detects to control device 100.When design temperature is crossed in the detected temperatures variation, control device 100 sends switching signal to magnetic valve 3, do not cross under the situation of design temperature and change in detected temperatures, control device 100 sends switching signals to magnetic valve 3 continuously or with the time interval of setting.So move in circles, thereby guarantee that magnetic valve 3 is in correct switching state.
Temperature-detecting device 200 can be continuously or the compartment of terrain temperature of refrigerator evaporator 4 or refrigerating chamber is detected, can comprise that as checkout gear 200 TEMP that is arranged on refrigerator evaporator 4 or refrigerating chamber carries out temperature detection, preferred continuous detecting temperature.Detected temperatures changes, and can be to be time dependent curve.In this manual, detected temperatures is crossed design temperature, is meant that detected temperatures changes under the low design temperature on high design temperature, or changes on the high design temperature under low design temperature.In other words, design temperature can be used as a temperature range, and detected temperatures is crossed this temperature range from high to low or from low to high and meaned that all detected temperatures crosses this temperature range in the process that changes, promptly cross design temperature.
In the present invention, checkout gear 200 detected temperatures send to control device 100 with detected temperatures, and control device 100 judges whether detected temperatures crosses design temperature, as can be preferably temperature by detected temperatures and setting compare and judge, or the like.When detected temperatures is crossed design temperature, if changing from high to low, detected temperatures crosses design temperature, control device 100 sends switching signal to magnetic valve 3, magnetic valve 3 switches to freezer evaporator according to switching signal from refrigerator evaporator under the control of control device 100, make refrigerant not flow through refrigerator evaporator, refrigerating chamber does not freeze; If changing from low to high, detected temperatures crosses design temperature, control device 100 sends switching signal to magnetic valve 3, magnetic valve 3 switches to refrigerator evaporator according to switching signal from freezer evaporator under the control of control device 100, make refrigerant flow through refrigerator evaporator, the refrigerating chamber refrigeration.And do not cross in detected temperatures under the situation of design temperature, change though that is to say detected temperatures, in variation, do not cross design temperature, on design temperature, change always as detected temperatures, or under design temperature, change, do not cross design temperature. alwaysIn the case, control device 100 sends switching signals to magnetic valve 3 serially or with the time interval of setting, switching state to magnetic valve 3 is controlled, and makes magnetic valve 3 be in correct switching state according to switching signal under the control of control device 100, guarantees the operate as normal of refrigerator.
Fig. 4 is illustrated in detected temperatures and does not cross under the situation of design temperature, and control device 100 sends the working condition of switching signal to magnetic valve 3 with the time interval of setting.As shown in Figure 4, cross in detected temperatures under the situation of design temperature, control device 100 sends switching signal to magnetic valve 3, and magnetic valve 3 switches.Do not cross in detected temperatures under the situation of design temperature, control device 100 judges that detected temperatures do not cross the time of design temperature and whether reach the time interval of setting, if do not reach the time interval of setting, control device 100 does not send switching signal to magnetic valve 3, if reach the time interval of setting, control device 100 sends switching signal to magnetic valve 3, and magnetic valve 3 is in correct switching state according to switching signal under the control of control device.In other words, do not cross in detected temperatures under the situation of design temperature, control device 100 sends switching signal by the time interval of setting to magnetic valve 3, and the control magnetic valve is in correct switching state, as shown in Figure 4.
For example, do not cross under the situation of design temperature in variation on the design temperature in detected temperatures, control device 100 sends switching signals with the time interval of setting to magnetic valve 3 always, and control magnetic valve 3 keeps switching to the state of refrigerator evaporator 4.If misoperation takes place because of external interference in magnetic valve 3 therebetween, switch to freezer evaporator 5, promptly, the actual switching state switching state correct of magnetic valve with it, or its switching state that should be in does not conform to, this moment, in fact refrigerator evaporator did not freeze, and the temperature of refrigerating chamber can not reduce crosses design temperature.But arrival along with the next time interval, control device 100 sends switching signal in the next time interval to magnetic valve 3, this switching signal is the switching signal that switches to refrigerator evaporator 4, make magnetic valve 3 under the control of control device 100, switch to refrigerator evaporator 4 according to signal, promptly switch and get back to misoperation original switching state before, thereby guarantee that magnetic valve 3 is in correct switching state, vice versa.Based on similar reason, send switching signal to magnetic valve 3 continuously by control device 100, more can in time correct magnetic valve 3 because of the misoperation that interference produces, guarantee that it is in correct switching state all the time.Thus, by control device 100 continuously or the switching signal that sends to magnetic valve 3 by the time interval of setting, just can make magnetic valve 3 under the control of control device 100, switch accordingly according to switching signal, in time correct the misoperation that magnetic valve may take place because of interference, guarantee that magnetic valve is in correct switching state, the refrigerator operate as normal is avoided occurring temperature of refrigerating chamber and is crossed low or too high phenomenon.
In refrigerator of the present invention, control device 100 can be a pulse signal to the switching signal that magnetic valve 3 sends, preferably positive and negative pulse signal.For example, optional positive pulse signal control magnetic valve 3 switches to refrigerator evaporator 4, make it to be in the switching state that switches to refrigerator evaporator 4, undersuing control magnetic valve 3 switches to freezer evaporator 5, make it to be in the switching state that switches to freezer evaporator 5, vice versa, or the like.
In detected temperatures on the design temperature or under situation about changing on the design temperature, magnetic valve 3 should be in the switching state that switches to refrigerator evaporator, this moment, refrigerant flow through refrigerator evaporator 4, make refrigerator evaporator 4 refrigeration, refrigerating chamber refrigeration, thereby the temperature of reduction refrigerator evaporator 4 or refrigerating chamber.In detected temperatures under the design temperature or under situation about changing under the design temperature, magnetic valve 3 should be in the switching state that switches to freezer evaporator 5, refrigerant does not flow through refrigerator evaporator 4, and returns compressor 1 after directly flowing through freezer evaporator 5, and refrigerator evaporator 4 does not freeze.In other words, in detected temperatures under situation about changing on the design temperature, control device 100 is the switching signal that switches to refrigerator evaporator 4 to the switching signal that magnetic valve 3 sends, and magnetic valve 3 is in the switching state that switches to refrigerator evaporator 4 according to this switching signal corresponding actions under the control of control device 100.In detected temperatures under situation about changing under the design temperature, control device 100 sends the switching signal that switches to freezer evaporator 5 to magnetic valve, and magnetic valve 3 is in the switching state that switches to freezer evaporator 5 according to this switching signal corresponding actions under the control of control device 100.At this specification, the switching state that magnetic valve is correct, be meant the switching signal magnetic valve that sends according to control device the switching state that should be in, also can be described as switching state corresponding with switching signal or that conform to.Should be in the switching state that switches to refrigerator evaporator 4 as magnetic valve under the switching signal that switches to refrigerator evaporator 4, magnetic valve should be in the switching state that switches to freezer evaporator 5 under the switching signal that switches to freezer evaporator 5, or the like.
At refrigerator of the present invention, when the temperature of detected refrigerator evaporator 4 or refrigerating chamber be in all the time on the design temperature or under do not cross design temperature, be temperature all the time on the design temperature or under change and do not cross under the situation of design temperature, control device 100 sends switching signal continuously or by the time interval of setting to magnetic valve 3, make magnetic valve 3 according to the switching signal corresponding actions that is sent, be in and the corresponding correct switching state of this switching signal.For example, after magnetic valve 3 was received switching signal, if the switching state of magnetic valve conforms to switching signal, magnetic valve 3 maintained the original state, if do not conform to, magnetic valve 3 switches, and switches to the state that conforms to switching signal.Like this, send switching signal to magnetic valve 3 continuously or by the time interval of setting, just can correct the misoperation that magnetic valve 3 takes place owing to being interfered, make refrigerator be continued normally to work by control device 100.
In refrigerator of the present invention, to cross in detected temperatures under the situation of design temperature, control device 100 sends switching signal to magnetic valve 3.Detected temperatures always on the design temperature or under do not cross design temperature, promptly always on the design temperature or under change and do not cross under the situation of design temperature, control device 100 ceaselessly sends switching signals to magnetic valve 3 continuously or with the time interval of setting, be that control device 100 just sends a switching signal to magnetic valve 3 continuously or every a period of time, to guarantee that magnetic valve 3 is in and the corresponding state of control signal, thereby can in time correct magnetic valve 3 contingent misoperations, get rid of and disturb, make system's operate as normal.
Fig. 5 illustrates the schematic diagram of refrigerator work situation according to an embodiment of the invention.As shown in Figure 5, in the present embodiment, when the temperature of detected refrigerator evaporator 4 or refrigerating chamber be in all the time on the design temperature or under, cross in the absence of design temperature, control device 100 is (not shown) or send the switching signal identical with last time to magnetic valve 3 by the time interval of setting continuously.At present embodiment, not cross in detected temperatures under the situation of design temperature, control device 100 sends switching signal to magnetic valve 3 continuously or by the time interval of setting, and the switching signal that is sent is the identical switching signal of switching signal that sent with last time.For example, when detected temperatures is not crossed under the situation of design temperature in variation on the design temperature always, control device 100 sends the switching signal that switches to refrigerator evaporator 4 to magnetic valve 3 continuously or by the time interval of setting, and magnetic valve 3 should be in the switching state that switches to refrigerator evaporator 4.During this period, if magnetic valve 3 switches to freezer evaporator 5 because of disturbing the generation misoperation, because refrigerator evaporator does not freeze, detected temperatures is not crossed design temperature also on design temperature, control device 100 will be still the switching signal that switches to refrigerator evaporator 4 to the switching signal that magnetic valve sends continuously or in the next time interval, the identical switching signal of switching signal that promptly is and was sent last time, magnetic valve 3 switches to refrigerator evaporator 4 according to this switching signal under the control of control device 100, make refrigerant flow through refrigerator evaporator 4, the refrigerating chamber refrigeration, thus avoid refrigerating chamber the too high phenomenon of temperature to occur.And if detected temperatures is always on design temperature, control device 100 is still the switching signal that switches to refrigerator evaporator 4 to the switching signal that magnetic valve 3 is sent, if misoperation does not take place in magnetic valve 3 because of being interfered, still be under the correct switching state that switches to refrigerator evaporator 4, magnetic valve 3 sends under the switching signal that switches to refrigerator evaporator 4 at control device 100, be failure to actuate, keep its correct switching state.Detected temperatures is not crossed under the situation of design temperature changing under the design temperature always, and situation and above-mentioned similar no longer illustrates at this.So move in circles, thereby guarantee that magnetic valve 3 is in correct duty.
According to another embodiment of the present invention (not shown), in refrigerator of the present invention, when the temperature of detected refrigerator evaporator 4 or refrigerating chamber be in all the time on the design temperature or under, cross in the absence of design temperature, control device 100 sends switching signal by the time interval of setting to magnetic valve 3, and this switching signal is an initializing signal.In addition, other parts of present embodiment are similar to the embodiment of Fig. 4, specifically can be with reference to the explanation to Fig. 4.In the present embodiment, do not cross in detected temperatures under the situation of design temperature, control device 100 judges that detected temperatures never crosses the time of design temperature and whether reach setting-up time at interval, when the time that detected temperatures is never crossed design temperature reaches the time interval of setting, control device 100 sends initializing signal to magnetic valve 3, switching state to magnetic valve 3 carries out initialization, make magnetic valve 3 be in initial switching state, continue detected temperatures then, perhaps under the situation that does not reach the setting-up time interval, continue detected temperatures.So move in circles,, guarantee that magnetic valve 3 is in correct duty, makes refrigerator work normal constantly to get rid of extraneous interference.In the present embodiment, the time interval of preferred settings is longer, is preferably greater than the time interval of the setting in embodiment illustrated in fig. 4.
In the present invention, the initialization of magnetic valve 3 states is meant the original position that magnetic valve was provided with in the refrigerator when refrigerator dispatched from the factory, it can be set to be in the switching state that switches to refrigerator evaporator 4, also can be set to be in the switching state that switches to freezer evaporator 5.The init state of supposing magnetic valve 3 is the switching state that switches to refrigerator evaporator 4, is being in the initializing signal of receiving control device 100 under this switching state as magnetic valve 3, and magnetic valve 3 these signals of response keep former switching state; If magnetic valve 3 is being in the initializing signal of receiving control device 100 under the switching state that switches to freezer evaporator 5, then magnetic valve 3 these signals of response switch to refrigerator evaporator 4, are in the switching state that switches to refrigerator evaporator 4.
Fig. 6 illustrates the schematic diagram of refrigerator work situation in accordance with another embodiment of the present invention.As shown in Figure 6, do not cross in detected temperatures under the situation of design temperature, control device 100 with time interval of setting before magnetic valve 3 sends switching signals, control device 100 judges whether the work of magnetic valve 3 or refrigerator occurs unusually earlier, work as magnetic valve 3 or refrigerator occurs unusually, and control device 100 sends switching signals to magnetic valve 3.Otherwise just magnetic valve 3 or refrigerator do not occur under the unusual situation, and control device 100 does not send switching signal to magnetic valve 3.Then, checkout gear detected temperatures.So move in circles, guarantee that magnetic valve 3 is in correct switching position.In the present embodiment, do not cross in detected temperatures under the situation of design temperature, control device 100 sends switching signal with the time interval of setting to magnetic valve 3, but reaching setting-up time at interval, before sending switching signal to magnetic valve, control device 100 will judge whether magnetic valve 3 occurs unusually, be that control device 100 judges earlier that detected temperatures do not cross the time of design temperature and whether reach the time interval of setting, if reach, judge again whether magnetic valve 3 or refrigerator occur unusually, occur unusually as magnetic valve 3 or refrigerator, control device 100 just sends switching signals to magnetic valve 3, otherwise does not send switching signal.Then, get back to detected temperatures.Whether magnetic valve 3 or refrigerator occur unusually, and whether variations in temperature that can be by contrasting detected refrigerator evaporator 4 or refrigerating chamber conforms to correct variation and carry out.Be under the refrigerating state as working as refrigerator evaporator 4 or refrigerating chamber, temperature should be changed to low by height, if it is working properly to detect the identical with it explanation of variations in temperature direction, on the contrary the explanation operation irregularity, or the like.Obviously, also can take other method well known by persons skilled in the art.
Fig. 7 illustrates an alternative embodiment of the invention.As shown in Figure 7, in the present embodiment, control device 100 is determined the state of temperature of refrigerator evaporator or refrigerating chamber according to detected temperatures, when changing, the state of temperature of refrigerator evaporator or refrigerating chamber sends switching signal to described magnetic valve, all the time be under the same state of temperature situation at refrigerator evaporator or refrigerating chamber, send switching signal to described magnetic valve continuously or with the time interval of setting, in addition, the other parts of present embodiment and the embodiment of Fig. 4 are similar.
In the present embodiment, the state of temperature of refrigerator evaporator or refrigerating chamber can have " height ", " low " two states.After control device receives detected temperatures, compare with the temperature of high and low setting, if detected temperatures than the high temperature height of setting, control device is just judged the state of temperature of refrigerator evaporator or refrigerating chamber for high, otherwise is low.Under the state of temperature of refrigerator evaporator or refrigerating chamber was high situation, magnetic valve should switch to refrigerator evaporator, makes refrigerant flow through refrigerator evaporator, the refrigerating chamber refrigeration; Under the state of temperature of refrigerator evaporator or refrigerating chamber was low situation, magnetic valve should switch to freezer evaporator, makes refrigerant not flow through refrigerator evaporator, and refrigerating chamber does not freeze.Obviously, when the temperature that detected temperatures equals to set, state of temperature can be made as height or for low, the state of temperature of control device decidable refrigerator evaporator or refrigerating chamber be high or is low.
In the present embodiment, control device sends switching signal to magnetic valve when state of temperature changes, all the time be in same state of temperature at refrigerator evaporator or refrigerating chamber, or magnetic valve is under the situation of same switching state all the time, control device sends switching signal to magnetic valve continuously or with the time interval of setting, that is to say, control device is in same state of temperature continuously or at refrigerator evaporator or refrigerating chamber all the time, or magnetic valve time of being in same switching state all the time reach under the situation in the time interval of setting, send switching signal to magnetic valve.So move in circles, correct the misoperation that magnetic valve 3 may cause because of external interference, guarantee that magnetic valve 3 is in correct duty.Among the present invention, it is to be as the criterion with the state that magnetic valve should be in that magnetic valve is in same state all the time.
In the present invention, control device 100 can comprise a tape deck (not shown), the refrigerator evaporator that recording control apparatus 100 is determined or the state of temperature of refrigerating chamber.When the state of temperature of refrigerator evaporator of determining or refrigerating chamber was inconsistent with recording status, control device 100 was updated to definite state of temperature with record, and to magnetic valve transmission switching signal, magnetic valve switches according to switching signal.When state of temperature is consistent with recording status, control device 100 sends switching signal to magnetic valve 3 continuously, perhaps control device 100 is judged the consistent time that remains, just the state of temperature of refrigerator evaporator or refrigerating chamber remains the time interval whether constant time reaches setting, if reach, control device 100 sends switching signal to magnetic valve 3, otherwise does not send.Then, get back to temperature detection, detect the temperature of refrigerator evaporator or refrigerating chamber, so move in circles, guarantee that magnetic valve 3 is in correct switching state.More than be to judge by the state of temperature of tape deck and record thereof whether the state of temperature of refrigerator evaporator or refrigerating chamber changes, certainly also can adopt other method known to those skilled in the art to realize.
In another embodiment of the present invention, as shown in Figure 8.In refrigerator of the present invention, also can on the basis of more above-mentioned embodiment, increase warning device, other parts can be similar with these embodiment.In the present embodiment, refrigerator also can comprise the warning device (not shown), and it can be an audio frequency, as buzzer, can be video also, as display, or the like.Warning device links to each other with control device 100, is subjected to the control of its control device 100.As previously mentioned, do not cross when detected temperatures under the situation of design temperature, control device sends switching signal to magnetic valve.In the case, when the number of times of the switching signal that is sent when control device 100 reaches a setting value, for example, send under the situation of identical switching signal for magnetic valve 3 all the time at control device 100, when the transmission number of times that sends identical switching signal reached set point number, warning device was reported to the police.Control device can comprise counter, is used for the number of times that recording control apparatus sends identical switching signal all the time.In actual use, refrigerator may break down owing to other reason, as refrigerating chamber the door may not shut or the like.In the case, according to present embodiment, refrigerator of the present invention can be reminded the user by the warning of warning device, and the user can in time be fixed a breakdown.
The present invention also provides a kind of control method of refrigerator.Refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and connecting line that connects between them and control device that above-mentioned parts are controlled.Magnetic valve switches between refrigerator evaporator and freezer evaporator, flows back to after making refrigerant flow through refrigerator evaporator and freezer evaporator, does not perhaps flow through refrigerator evaporator and flows back to after directly flowing through freezer evaporator.Control method of the present invention comprises that control device continuously or send the step of switching signal to magnetic valve with the time interval of setting.In this way, control method of the present invention can in time be corrected magnetic valve because of the contingent misoperation of interference, guarantees that magnetic valve is in correct switching state.
At an embodiment of control method of the present invention, refrigerator also comprises the Temperature Detector that links to each other with control device except that above-mentioned parts.In the present embodiment, Temperature Detector detects the temperature of refrigerator evaporator or refrigerating chamber, and detected temperatures is sent to control device.Cross under the situation of design temperature when detected temperatures changes, control device sends switching signal to magnetic valve.Do not cross in detected temperatures under the situation of this design temperature, promptly detected temperatures on the design temperature or under change but never cross under the situation of design temperature, control device sends switching signal to magnetic valve continuously or with the time interval of setting.Magnetic valve carries out corresponding action according to the switching signal that is sent under the control of control device, thereby is in correct switching state, corrects magnetic valve thus because of disturbing contingent misoperation, makes refrigerator work normal.
Fig. 9 is the schematic diagram of control method according to an embodiment of the invention, is illustrated in detected temperatures and does not cross under the situation of design temperature, and control device sends the method for switching signal to magnetic valve with the time interval of setting.As shown in Figure 9, in control method of the present invention, in step 101, temperature-detecting device detects the temperature of refrigerator evaporator or refrigerating chamber.In step 102, control device judges whether the temperature of refrigerator evaporator or refrigerating chamber crosses design temperature.As cross design temperature, in step 103, control device sends switching signal to magnetic valve, magnetic valve is under the control of control device, switch according to the switching signal that sends, switch to freezer evaporator from refrigerator evaporator, or switch to refrigerator evaporator from freezer evaporator.If the temperature of refrigerator evaporator or refrigerating chamber is not crossed design temperature, promptly the temperature of refrigerator evaporator or refrigerating chamber on the design temperature or under change and do not cross under the situation of design temperature, enter step 104.In step 104, judge that detected temperatures do not cross the time of design temperature and whether reach the time interval of setting, promptly detected temperatures on the design temperature or under change but whether time of never crossing the temperature of setting continues to reach the time interval of setting.If for "No" turns back to step 101, carry out next one circulation.If be "Yes", in step 105, control device transmits control signal to magnetic valve, and magnetic valve is in correct switching state (step 106) according to this switching signal under the control of control device.Then, turn back to step 101, carry out next one circulation.Move in circles, thereby guarantee that magnetic valve is in correct duty, get rid of external interference, make refrigerator work normal.
According to another embodiment of the invention, in control method of the present invention, do not cross in detected temperatures under the situation of design temperature, control device sends the switching signal identical with last time to magnetic valve.In the present embodiment, do not cross in detected temperatures under the situation of design temperature, control device sends switching signal to magnetic valve continuously or with the time interval of setting, and this switching signal is the identical switching signal of switching signal that sent with last time.Other parts are similar to aforementioned control method.
According to another embodiment of the invention, in control method of the present invention, do not cross in detected temperatures under the situation of design temperature, control device sends switching signal with the time interval of setting to magnetic valve, and this switching signal is an initializing signal.Magnetic valve is initialised according to this switching signal under the control of control device, is in original state.Then, turn back to the temperature detection step, carry out next one circulation.The aforementioned control method of other parts is similar.
According in an alternative embodiment of the invention, control method of the present invention, do not cross in detected temperatures under the situation of design temperature, control device with time interval of setting before described magnetic valve sends switching signal, control device judges whether magnetic valve or refrigerator occur unusually, if control device sends switching signal to magnetic valve, otherwise control device does not send switching signal.In the present embodiment, do not cross in detected temperatures under the situation of design temperature, control device was judged earlier in the time that detected temperatures is not crossed design temperature, promptly judge detected temperatures on the design temperature or under change the time do not cross design temperature all the time and whether reach the time interval of setting, if be "No", turn back to the temperature detection step, if be "Yes", control device judges further whether magnetic valve or refrigerator go out unusually, if it is unusual, control device just sends switching signal to magnetic valve, otherwise does not send.Then, turn back to the temperature detection step, carry out next one circulation.Like this, can under magnetic valve or the normal situation of refrigerator work, reduce the number of times that sends switching signal, energy savings.Simultaneously, can also correct magnetic valve, make magnetic valve be in correct switching state because of disturbing contingent misoperation.
The present invention also provides a kind of control method of refrigerator.In this control method, temperature-detecting device detects the temperature of refrigerator evaporator or refrigerating chamber, and the temperature that detects is sent to control device.Control device determines that according to the temperature that detects the state of temperature of refrigerator evaporator or refrigerating chamber is a height or low, and judges further whether the state of temperature of refrigerator evaporator or refrigerating chamber variation has taken place.When the state of temperature of refrigerator evaporator or refrigerating chamber changes, control device sends switching signal to magnetic valve, magnetic valve switches according to switching signal, as switching to freezer evaporator from refrigerator evaporator, or switches to refrigerator evaporator from freezer evaporator.Under the situation that state of temperature does not change, control device judges whether time that state of temperature does not change reaches the time of setting, judge that just refrigerator evaporator or refrigerating chamber are in same state of temperature all the time, or whether magnetic valve time of being in same duty all the time reaches the time of setting, if reach setting-up time, control device sends switching signal to magnetic valve, does not send switching signal if reach the time-controlling arrangement of setting.Then, get back to the temperature detection step.So move in circles, guarantee that magnetic valve is in correct switching state.In addition, under the situation that state of temperature does not change, control device also sends switching signal to magnetic valve serially, corrects the misoperation of magnetic valve at any time.In other words, under the situation that state of temperature does not change, promptly refrigerator evaporator or refrigerating chamber are under the situation of same state of temperature all the time, and control device sends switching signal to magnetic valve serially or by the time interval of setting.
In the present embodiment, send under the situation of switching signal at control device to magnetic valve with the time interval of setting, be with the difference of control method shown in Figure 9, after step 101, control device judges that according to detected temperatures the state of temperature of refrigerator evaporator or refrigerating chamber is a height or low, then, whether the state of temperature of judging refrigerator evaporator or refrigerating chamber changes.For example, by the state of temperature of present refrigerator evaporator or refrigerating chamber is compared with the state of temperature of last time, judge whether the state of temperature of refrigerator evaporator or refrigerating chamber changes.When state of temperature changes, enter step 103, control device sends switching signal to magnetic valve, and magnetic valve switches.Under the situation that state of temperature does not change, enter step 104, control device judges whether time that state of temperature does not change reach the time of setting, judges promptly whether time that refrigerator evaporator or refrigerating chamber remain same state of temperature reaches the time interval of setting.If for "Yes" to step 105, if turn back to step 101 for "No".Certainly, under situation about not changing when state of temperature, control device also sends switching signal to magnetic valve serially.So move in circles, guarantee that magnetic valve is in correct switching state.
In control method of the present invention, refrigerator can comprise warning devices such as audio alarm and/or video alarm, when system because of external interference outside reason when breaking down, this warning device can be reported to the police under the control of control device.In control method of the present invention, control device can comprise counter, is used for recording control apparatus to send the number of times of same control signal always.All the time send under the situation of same control signal the transmission number of times of these control signals of counter records at control device.When the number of times that is write down reached pre-determined number, control device sent fault-signal, and warning device is reported to the police, and reminded custom system to break down.
Though, more than by embodiment refrigerating circulation system of the present invention and control method thereof are illustrated.But, will be understood that those skilled in the art can change the present invention or improve under the situation that does not depart from connotation of the present invention and scope.These changes and improvements all should fall within the scope of the present invention.
Claims (12)
1. refrigerator, described refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and the connecting line that between them, connects, and the control device that above-mentioned parts are controlled, wherein, described magnetic valve switches between described refrigerator evaporator and described freezer evaporator, flow back to after making refrigerant flow through described refrigerator evaporator and described freezer evaporator, perhaps do not flow through described refrigerator evaporator and flow back to after directly flowing through described freezer evaporator, it is characterized in that: described control device sends switching signal to described magnetic valve continuously or with the time interval of setting.
2. refrigerator, described refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and the connecting line that between them, connects, and the control device that above-mentioned parts are controlled, wherein, described magnetic valve switches between described refrigerator evaporator and described freezer evaporator, flow back to after making refrigerant flow through described refrigerator evaporator and described freezer evaporator, perhaps do not flow through described refrigerator evaporator and flow back to after directly flowing through described freezer evaporator, described refrigerator also comprises Temperature Detector, be used to detect the temperature of described refrigerator evaporator or refrigerating chamber, described Temperature Detector links to each other with control device, detected temperatures is sent to described control device, it is characterized in that: when described detected temperatures is crossed the design temperature scope, described control device sends switching signal to described magnetic valve, and do not cross in described detected temperatures under the situation of described design temperature scope, described control device sends switching signal to described magnetic valve continuously or with the time interval of setting.
3. refrigerator as claimed in claim 2 is characterized in that, does not cross in described detected temperatures under the situation of described design temperature scope, and described control device sends the switching signal identical with last time to described magnetic valve.
4. refrigerator as claimed in claim 2, it is characterized in that, do not cross in described detected temperatures under the situation of described design temperature scope, described control device sends switching signal with the time interval of setting to described magnetic valve, and described switching signal is an initializing signal.
5. as claim 3 or 4 described refrigerators, wherein, do not cross in described detected temperatures under the situation of described design temperature scope, described control device with time interval of setting before described magnetic valve sends switching signal, described control device judges whether described magnetic valve occurs unusually, when described magnetic valve occurs when unusual, described control device sends switching signal to described magnetic valve.
6. refrigerator, described refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and the connecting line that between them, connects, and the control device that above-mentioned parts are controlled, wherein, described magnetic valve switches between described refrigerator evaporator and described freezer evaporator, flow back to after making refrigerant flow through described refrigerator evaporator and described freezer evaporator, perhaps do not flow through described refrigerator evaporator and flow back to after directly flowing through described freezer evaporator, described refrigerator also comprises Temperature Detector, be used to detect the temperature of described refrigerator evaporator or refrigerating chamber, described Temperature Detector links to each other with described control device, detected temperatures is sent to described control device, it is characterized in that: described control device is determined the state of temperature of described refrigerator evaporator or refrigerating chamber according to described detected temperatures, when changing, the state of temperature of described refrigerator evaporator or refrigerating chamber sends switching signal to described magnetic valve, under the situation that the state of temperature of described refrigerator evaporator or refrigerating chamber does not change, send switching signal to described magnetic valve continuously or with the time interval of setting.
7. control method of refrigerator, described refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and the connecting line that between them, connects, and the control device that above-mentioned parts are controlled, wherein, described magnetic valve switches between described refrigerator evaporator and described freezer evaporator, flow back to after making refrigerant flow through described refrigerator evaporator and described freezer evaporator, perhaps do not flow through described refrigerator evaporator and flow back to after directly flowing through described freezer evaporator, it is characterized in that: described control method comprises that described control device continuously or send the step of switching signal to described magnetic valve with the time interval of setting.
8. control method of refrigerator, described refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and the connecting line that between them, connects, and the control device that above-mentioned parts are controlled, wherein, described magnetic valve switches between described refrigerator evaporator and described freezer evaporator, flow back to after making refrigerant flow through described refrigerator evaporator and described freezer evaporator, perhaps do not flow through described refrigerator evaporator and flow back to after directly flowing through described freezer evaporator, described refrigerator also comprises the Temperature Detector that links to each other with described control device, and described method comprises step:
Described Temperature Detector detects the temperature of refrigerator evaporator or refrigerating chamber, and detected temperatures is sent to described control device; With
When described detected temperatures is crossed the design temperature scope, described control device sends switching signal to described magnetic valve, do not cross in described detected temperatures under the situation of described design temperature scope, described control device sends switching signal to described magnetic valve continuously or with the time interval of setting.
9. control method as claimed in claim 7 is characterized in that, described method comprises step: do not cross in described detected temperatures under the situation of described design temperature scope, described control device sends the switching signal identical with last time to described magnetic valve.
10. control method as claimed in claim 7, described method comprises step: do not cross in described detected temperatures under the situation of described design temperature scope, described control device sends switching signal with the time interval of setting to described magnetic valve, and described switching signal is an initializing signal.
11. as claim 9 or 10 described control methods, it is characterized in that, described method comprises step: do not cross in described detected temperatures under the situation of described design temperature scope, described control device with time interval of setting before described magnetic valve sends switching signal, described control device judges whether described magnetic valve occurs unusually, when described magnetic valve occurs when unusual, described control device sends switching signal to described magnetic valve.
12. control method of refrigerator, described refrigerator comprises compressor at least, condenser, refrigerator evaporator, freezer evaporator, magnetic valve, and the connecting line that between them, connects, and the control device that above-mentioned parts are controlled, wherein, described magnetic valve switches between described refrigerator evaporator and described freezer evaporator, flow back to after making refrigerant flow through described refrigerator evaporator and described freezer evaporator, perhaps do not flow through described refrigerator evaporator and flow back to after directly flowing through described freezer evaporator, described refrigerator also comprises the Temperature Detector that links to each other with described control device, and described method comprises step:
Described Temperature Detector detects the temperature of described refrigerator evaporator or refrigerating chamber, and detected temperatures is sent to described control device;
Described control device determines that the state of temperature of refrigerating chamber still is low for height;
When the state of temperature of described refrigerator evaporator or refrigerating chamber changes, described control device sends switching signal to described magnetic valve, under the situation that the state of temperature of described refrigerator evaporator or refrigerating chamber does not change, described control device sends switching signal to described magnetic valve continuously or with the time interval of setting.
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| CN103471341A (en) * | 2013-09-24 | 2013-12-25 | 合肥美菱股份有限公司 | Refrigerator chamber supercooling fault detection system and detection method |
| CN104329831B (en) * | 2014-11-21 | 2017-02-22 | 珠海格力电器股份有限公司 | Alarm control method and device and electronic equipment |
| CN105784134A (en) * | 2016-03-24 | 2016-07-20 | 苏州路之遥科技股份有限公司 | Wireless temperature measuring device communication method |
| CN107062787B (en) * | 2016-12-28 | 2019-08-13 | 广东格兰仕集团有限公司 | Anti- circuit and its control method are welded based on automatically controlled correction program motor-driven valve pipeline |
| CN107328156B (en) * | 2017-07-10 | 2019-07-02 | 美的集团股份有限公司 | Judgment method, server and the computer readable storage medium of breakdown of refrigerator |
| CN109764601A (en) * | 2018-12-18 | 2019-05-17 | 合肥美的电冰箱有限公司 | Refrigerator and its control method |
| CN112432394A (en) * | 2020-11-26 | 2021-03-02 | 珠海格力电器股份有限公司 | Control and abnormality detection method and device for electric switching valve and refrigeration equipment |
| CN115200289B (en) * | 2022-06-22 | 2024-07-30 | 海信（山东）冰箱有限公司 | Refrigerator and electromagnetic valve control method |
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| US4726160A (en) * | 1982-07-19 | 1988-02-23 | Tokyo Shibaura Denki Kabushiki Kaisha | Temperature control apparatus for electric refrigerator |
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