CN104236249A - Refrigerator and control method for temperature of refrigerating chamber of refrigerator - Google Patents
Refrigerator and control method for temperature of refrigerating chamber of refrigerator Download PDFInfo
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- CN104236249A CN104236249A CN201410503771.2A CN201410503771A CN104236249A CN 104236249 A CN104236249 A CN 104236249A CN 201410503771 A CN201410503771 A CN 201410503771A CN 104236249 A CN104236249 A CN 104236249A
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Abstract
The invention discloses a refrigerator and a control method for the temperature of a refrigerating chamber of the refrigerator. The refrigerator comprises a compressor, a temperature sensor, a human-computer interaction device and a controller, wherein the temperature sensor is used for detecting the temperature in the refrigerating chamber; the human-computer interaction device is used for setting the set temperature of the refrigerating chamber by a user; the controller is used for receiving a temperature sensing signal and the set temperature of the refrigerating chamber, obtaining the current temperature of the refrigerating chamber according to the temperature sensing signal, comparing the current temperature of the refrigerating chamber with the set temperature of the refrigerating chamber and controlling the turn-on or turn-off of the compressor according to the comparison result; the temperature sensor is arranged in the refrigerating chamber to directly sense the temperature in the refrigerating chamber, so that the temperature sensor is accurate in temperature sensing; the controller controls the turn-on or turn-off of the compressor according to the current temperature of the refrigerating chamber, so that the temperature in the refrigerating chamber can be accurately controlled.
Description
Technical field
The present invention relates to household electrical appliance technical field, be specifically related to the control method of the temperature of a kind of refrigerator and refrigerating chamber thereof.
Background technology
The birth of single system refrigerator, offers convenience to the life of people.Mechanical single system refrigerator the earliest utilizes built-in temperature controller to control the startup and shutdown of compressor, and particularly, user, after plugging electricity, utilizes the built-in temperature control turn knob of refrigerator to arrange gear, just can realize compressor switch machine.But user in use can find, there is not cold, the excessively cold and freezing problem not reaching below-15 degree of refrigeration in mechanical single system refrigerator.Further, find after deliberation to cause the generation of the problems referred to above to be mainly: temperature controller temperature-sensitive head sticks bad.
Given this, industry utilizes refrigeration evaporation plate temperature sensor to control the system of single system freezer compressor switching on and shutting down, utilizes built-in temperature controller to control the startup and shutdown of compressor with the mechanical single system refrigerator replaced the earliest.The described system utilizing refrigeration evaporation plate temperature sensor to control the switching on and shutting down of single system freezer compressor have temperature-sensitive accurately, sensitivity advantages of higher; but simultaneously; the shortcoming of this system is also apparent: because refrigeration evaporation plate temperature-sensitive head sticks in the foaming layer in casing; cannot reprocess after refrigeration evaporation plate sensor degradation; casing is caused to scrap; refrigeration evaporation plate temperature-sensitive head is easily washed away by foamed material; cause temperature-sensitive mistake; and then cause compressor not shut down phenomenon, and make freezing excessively cold etc. problem.
Summary of the invention
Main purpose of the present invention is to solve in current refrigerator, and temperature sensor temperature-sensitive is inaccurate and cause the compressor switch machine that can not effectively control, so that the problem that the refrigerated storage temperature of refrigerator can not accurately be controlled.
For arriving above-mentioned technical purpose, the invention provides a kind of refrigerator, comprising:
Compressor;
Temperature sensor, is located in refrigerating chamber, in order to detect temperature in refrigerating chamber and output temperature sensing signal;
Human-computer interaction device, exports the design temperature of refrigerating chamber with the design temperature setting refrigerating chamber for user; And,
Controller, be electrically connected with described temperature sensor, described human-computer interaction device and described compressor, in order to receive the design temperature of described temperature sensing signal and described refrigerating chamber, and the Current Temperatures of refrigerating chamber is obtained according to described temperature sensing signal, and the design temperature of the Current Temperatures of described refrigerating chamber and described refrigerating chamber is compared, and compressor start or shutdown according to the output control compared.
Preferably, described controller is in order to when exceeding design temperature to the first threshold values of described refrigerating chamber when the Current Temperatures of described refrigerating chamber, control the start of described compressor, and when when design temperature to the second threshold values lower than described refrigerating chamber of the Current Temperatures of described refrigerating chamber, control the shutdown of described compressor.
Preferably, the unused time of described compressor is greater than 50% with the ratio of available machine time.
Preferably, the design temperature of described refrigerating chamber comprises 1 DEG C, 2 DEG C, 3 DEG C, 4 DEG C, 5 DEG C, 6 DEG C and 7 DEG C.
Preferably, described refrigerator also comprises testing circuit, one terminals of described testing circuit are connected with described temperature sensor, another terminals of described testing circuit are connected with described controller by dropping resistor, described controller obtains the resistance value of described temperature sensor according to the magnitude of voltage of described testing circuit, and determines the Current Temperatures of described refrigerating chamber according to the resistance value of described temperature sensor.
For arriving above-mentioned technical purpose, the present invention also provides a kind of control method of temperature of refrigerating chamber of refrigerator, comprises the following steps:
Human-computer interaction device exports the design temperature of refrigerating chamber;
Temperature in temperature sensor senses refrigerating chamber output temperature sensing signal;
Controller receives the design temperature of described temperature sensing signal and described refrigerating chamber, and the Current Temperatures of refrigerating chamber is obtained according to described temperature sensing signal, the design temperature of the temperature of described refrigerating chamber and described refrigerating chamber is compared, and controls start or the shutdown of compressor according to the result compared.
Preferably, the step of the described result according to the comparing start or shutdown that control compressor specifically comprises:
When the Current Temperatures of described refrigerating chamber exceeds design temperature to the first threshold values of described refrigerating chamber, described controller controls the start of described compressor; And,
When design temperature to the second threshold values lower than described refrigerating chamber of the Current Temperatures of described refrigerating chamber, described controller controls the shutdown of described compressor.
Preferably, the unused time of described compressor is greater than 50% with the ratio of available machine time.
Preferably, the design temperature of described refrigerating chamber comprises 1 DEG C, 2 DEG C, 3 DEG C, 4 DEG C, 5 DEG C, 6 DEG C and 7 DEG C.
Preferably, the described step obtaining the Current Temperatures of refrigerating chamber according to described temperature sensing signal specifically comprises:
Described controller judges the resistance value of described temperature sensor according to the magnitude of voltage of testing circuit, determines the Current Temperatures of described refrigerating chamber according to the resistance value of described temperature sensor.
The control method of the temperature of refrigerator provided by the invention and refrigerating chamber thereof, described refrigerator comprises compressor, temperature sensor, human-computer interaction device and controller, described temperature sensor is in order to detect temperature in refrigerating chamber and output temperature sensing signal, described human-computer interaction device is with the design temperature setting refrigerating chamber for user and export the design temperature of refrigerating chamber, described controller and described temperature sensor, described human-computer interaction device and described compressor are electrically connected, in order to receive the design temperature of described temperature sensing signal and described refrigerating chamber, and the Current Temperatures of refrigerating chamber is obtained according to described temperature sensing signal, and the design temperature of the Current Temperatures of described refrigerating chamber and described refrigerating chamber is compared, and compressor start or shutdown according to the output control compared, described temperature sensor is located in described refrigerating chamber, temperature in refrigerating chamber described in direct sensing, and make described temperature sensor temperature-sensitive accurate, and, described controller controls described compressor according to the Current Temperatures of refrigerating chamber and opens or cut out, thus the temperature that can control exactly in described refrigerating chamber.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of refrigerator provided by the invention;
The part frame schematic diagram that Fig. 2 is the control section of the refrigerator shown in Fig. 1;
Fig. 3 is the part frame schematic diagram of the control section of another embodiment of refrigerator provided by the invention;
Fig. 4 is the schematic flow sheet of an embodiment of the control method of the temperature of the refrigerating chamber of refrigerator provided by the invention;
The idiographic flow schematic diagram that Fig. 5 is the step S130 of the control method of the temperature of the refrigerating chamber of the refrigerator shown in Fig. 4.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Technical scheme of the present invention is further illustrated below in conjunction with Figure of description and specific embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1 is the structural representation of an embodiment of refrigerator provided by the invention, the part frame schematic diagram that Fig. 2 is the control section of the refrigerator shown in Fig. 1.
Refer to Fig. 1 to Fig. 2, described refrigerator 100 comprises compressor 1, temperature sensor 2, human-computer interaction device 3 and controller 4.
Described temperature sensor 2 is located in refrigerating chamber 101, in order to detect temperature in refrigerating chamber and output temperature sensing signal.Described human-computer interaction device 3, exports the design temperature of refrigerating chamber with the design temperature setting refrigerating chamber for user.Described controller 4 is electrically connected with described temperature sensor 2, described human-computer interaction device 3 and described compressor 1, in order to receive the design temperature of described temperature sensing signal and described refrigerating chamber, and the Current Temperatures of refrigerating chamber is obtained according to described temperature sensing signal, and compared by the design temperature of the Current Temperatures of described refrigerating chamber and described refrigerating chamber, and compressor 1 is started shooting or is shut down according to the output control compared.
In the present invention, because described temperature sensor 2 is located in described refrigerating chamber 101, temperature in refrigerating chamber 101 described in direct sensing, and make described temperature sensor 2 temperature-sensitive accurate, and, described controller 4 controls described compressor 1 according to the Current Temperatures of refrigerating chamber and opens or cut out, thus can control the temperature in described refrigerating chamber 101 exactly.
Particularly, described controller 4 is specifically in order to when exceeding design temperature to the first threshold values of described refrigerating chamber when the Current Temperatures of described refrigerating chamber, control described compressor 1 to start shooting, and when when design temperature to the second threshold values lower than described refrigerating chamber of the Current Temperatures of described refrigerating chamber, control described compressor 1 and shut down.In order to ensure the service life of described compressor 1, avoid described compressor 1 operating frequency very fast, the unused time of described compressor 1 is greater than 50% with the ratio of available machine time.
Explain for 1 DEG C with the first threshold values and the second threshold values: described controller 4 is a single-chip microcomputer, and described controller 4 is by the startup and shutdown of compressor described in Control 1, during larger than the design temperature of refrigerating chamber 1 DEG C of the Current Temperatures of the refrigerating chamber that described controller 4 obtains (1.5 DEG C can be fluctuated), described controller 4 controls described compressor 1 and starts shooting, described compressor 1 is lowered the temperature to described refrigerating chamber 101 after starting shooting, when the Current Temperatures of the refrigerating chamber that described controller 4 obtains is reduced to less than the design temperature of refrigerating chamber 1 DEG C, described controller 4 controls compressor 1 and cuts out.
Preferably, the design temperature of described refrigerating chamber comprises 1 DEG C, 2 DEG C, 3 DEG C, 4 DEG C, 5 DEG C, 6 DEG C and 7 DEG C, described human-computer interaction device 3 is previously provided with 1 DEG C, 2 DEG C, 3 DEG C, 4 DEG C, 5 DEG C, 6 DEG C and 7 DEG C, namely described human-computer interaction device 3 is previously provided with 7 gears for user's selection, described human-computer interaction device 3 can be touch control display and touch controlled key, and user sets the design temperature of different refrigerating chambers by pressing described touch controlled key.Obvious the design is not limited thereto, and can depend on actual need and arrange the gear of more or different parameters.
Further, with the design temperature of refrigerating chamber with 1 DEG C, and the first threshold values and the second threshold values are with 1 DEG C, for example illustrates: when the design temperature of refrigerating chamber is 1 DEG C, when the Current Temperatures of the refrigerating chamber that described controller 4 obtains is 2 DEG C, described controller 4 controls described compressor 1 and opens, and the available machine time controlling described compressor 1 is 163 seconds, by the cooling of 163 seconds of described compressor 1, the Current Temperatures of the refrigerating chamber that described controller 4 obtains reduces to 0 DEG C, afterwards, described controller 4 controls described compressor 1 and cuts out, and the unused time controlling described compressor 1 reaches 45 seconds, the Current Temperatures of the refrigerating chamber that described controller 4 is obtained returns 2 DEG C, described compressor 1 starts again, reciprocation cycle, complete the cooling of refrigerating chamber 101.
Fig. 3 is the part frame schematic diagram of the control section of another embodiment of refrigerator provided by the invention.
Refer to Fig. 3, described temperature sensor 2 is when different temperature, its resistance value is not identical yet, the embodiment that Fig. 3 provides and the embodiment difference that Fig. 1 to Fig. 2 provides are: described refrigerator 100 also comprises testing circuit 6, one terminals of described testing circuit 6 are connected with described temperature sensor 2, another terminals of described testing circuit 6 are connected with described controller 4 by dropping resistor 5, described controller 4 obtains the resistance value of described temperature sensor 2 according to the magnitude of voltage of described testing circuit 6, and the Current Temperatures of described refrigerating chamber is determined according to the resistance value of described temperature sensor 2.
Fig. 4 is the schematic flow sheet of an embodiment of the control method of the temperature of the refrigerating chamber of refrigerator provided by the invention.
Refer to Fig. 4, the present invention also provides a kind of control method of temperature of refrigerating chamber of refrigerator, comprises the following steps:
Step S110: human-computer interaction device 3 exports the design temperature of refrigerating chamber;
Step S120: temperature sensor 2 senses temperature in refrigerating chamber and output temperature sensing signal;
Step S130: controller 4 receives the design temperature of described temperature sensing signal and described refrigerating chamber, and the Current Temperatures of refrigerating chamber is obtained according to described temperature sensing signal, the design temperature of the temperature of described refrigerating chamber and described refrigerating chamber is compared, and controls start or the shutdown of compressor 1 according to the result compared.
In the present invention, described temperature sensor 2 is located in described refrigerating chamber 101, temperature in refrigerating chamber 101 described in direct sensing, and make described temperature sensor 2 temperature-sensitive accurate, and, described controller 4 controls described compressor 1 according to the Current Temperatures of refrigerating chamber and opens or cut out, thus can control the temperature in described refrigerating chamber 101 exactly.
The idiographic flow schematic diagram that Fig. 5 is the step S130 of the control method of the temperature of the refrigerating chamber of the refrigerator shown in Fig. 4.
Refer to Fig. 5, in the present embodiment, step S130 specifically comprises:
Step S131: controller 4 receives the design temperature of described temperature sensing signal and described refrigerating chamber, and the Current Temperatures obtaining refrigerating chamber according to described temperature sensing signal;
Step S132: the design temperature of the temperature of described refrigerating chamber and described refrigerating chamber is compared;
Step S133: when the Current Temperatures of described refrigerating chamber exceeds design temperature to the first threshold values of described refrigerating chamber, described controller 4 controls described compressor 1 and starts shooting; And,
Step S134: when design temperature to the second threshold values lower than described refrigerating chamber of the Current Temperatures of described refrigerating chamber, described controller 4 controls described compressor 1 and shuts down.
In the present embodiment, in order to ensure the service life of described compressor 1, avoid described compressor 1 operating frequency very fast, the unused time of described compressor 1 is greater than 50% with the ratio of available machine time.
Explain for 1 DEG C with the first threshold values and the second threshold values: described controller 4 is a single-chip microcomputer, and described controller 4 is by the startup and shutdown of compressor described in Control 1, during larger than refrigerating chamber design temperature 1 DEG C of the Current Temperatures of the refrigerating chamber that described controller 4 obtains (1.5 DEG C can be fluctuated), described controller 4 controls described compressor 1 and starts shooting, described compressor 1 is lowered the temperature to refrigerating chamber 101 after starting shooting, when the Current Temperatures of the refrigerating chamber that described controller 4 obtains is reduced to less than the design temperature of refrigerating chamber 1 DEG C, described controller 4 controls compressor 1 and cuts out.
In the present embodiment, the design temperature of described refrigerating chamber comprises 1 DEG C, 2 DEG C, 3 DEG C, 4 DEG C, 5 DEG C, 6 DEG C and 7 DEG C, described human-computer interaction device 3 is previously provided with 1 DEG C, 2 DEG C, 3 DEG C, 4 DEG C, 5 DEG C, 6 DEG C and 7 DEG C, namely described human-computer interaction device 3 is previously provided with 7 gears for user's selection, described human-computer interaction device 3 can be touch control display and touch controlled key, and user sets the design temperature of different refrigerating chambers by pressing described touch controlled key.Obvious the design is not limited thereto, and can depend on actual need and arrange the gear of more or different parameters.
Further, with the design temperature of refrigerating chamber with 1 DEG C, and the first threshold values and the second threshold values are with 1 DEG C, for example illustrates: when the design temperature of refrigerating chamber is 1 DEG C, when the Current Temperatures of the refrigerating chamber that described controller 4 obtains is 2 DEG C, described controller 4 controls described compressor 1 and opens, and the available machine time controlling described compressor 1 is 163 seconds, by the cooling of 163 seconds of described compressor 1, the Current Temperatures of the refrigerating chamber that described controller 4 obtains reduces to 0 DEG C, afterwards, described controller 4 controls described compressor 1 and cuts out, and the unused time controlling described compressor 1 reaches 45 seconds, the Current Temperatures of the refrigerating chamber that described controller 4 is obtained returns 2 DEG C, described compressor 1 starts again, reciprocation cycle, complete the cooling of refrigerating chamber 101.
Refer to Fig. 3 and Fig. 4, in the present embodiment, step S131 specifically comprises: described controller 4 judges the resistance value of described temperature sensor 2 according to the magnitude of voltage of testing circuit, determines the Current Temperatures of described refrigerating chamber according to the resistance value of described temperature sensor 2.
Step S131 concrete operations are as follows: described temperature sensor 2 is when different temperature, its resistance value is not identical yet, therefore, in the present embodiment, described refrigerator 100 also comprises testing circuit, one terminals of described testing circuit are connected with described temperature sensor 2, another terminals of described testing circuit are connected with described controller 4 by dropping resistor 5, described controller 4 obtains the resistance value of described temperature sensor 2 according to the magnitude of voltage of described testing circuit, and determines the Current Temperatures of described refrigerating chamber according to the resistance value of described temperature sensor 2.
These are only the preferred embodiments of the present invention; not thereby its scope of the claims is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; directly or indirectly be used in the technical field that other are relevant, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a refrigerator, is characterized in that, described refrigerator comprises:
Compressor;
Temperature sensor, is located in refrigerating chamber, in order to detect temperature in refrigerating chamber and output temperature sensing signal;
Human-computer interaction device, exports the design temperature of refrigerating chamber with the design temperature setting refrigerating chamber for user; And,
Controller, be electrically connected with described temperature sensor, described human-computer interaction device and described compressor, in order to receive the design temperature of described temperature sensing signal and described refrigerating chamber, and the Current Temperatures of refrigerating chamber is obtained according to described temperature sensing signal, and the design temperature of the Current Temperatures of described refrigerating chamber and described refrigerating chamber is compared, and compressor start or shutdown according to the output control compared.
2. refrigerator as claimed in claim 1, it is characterized in that, described controller is in order to when exceeding design temperature to the first threshold values of described refrigerating chamber when the Current Temperatures of described refrigerating chamber, control the start of described compressor, and when when design temperature to the second threshold values lower than described refrigerating chamber of the Current Temperatures of described refrigerating chamber, control the shutdown of described compressor.
3. refrigerator as claimed in claim 1, it is characterized in that, the unused time of described compressor is greater than 50% with the ratio of available machine time.
4. refrigerator as claimed in claim 1, it is characterized in that, the design temperature of described refrigerating chamber comprises 1 DEG C, 2 DEG C, 3 DEG C, 4 DEG C, 5 DEG C, 6 DEG C and 7 DEG C.
5. refrigerator as claimed in claim 1, it is characterized in that, described refrigerator also comprises testing circuit, one terminals of described testing circuit are connected with described temperature sensor, another terminals of described testing circuit are connected with described controller by dropping resistor, described controller obtains the resistance value of described temperature sensor according to the magnitude of voltage of described testing circuit, and determines the Current Temperatures of described refrigerating chamber according to the resistance value of described temperature sensor.
6. a control method for the temperature of the refrigerating chamber of refrigerator, is characterized in that, the control method of the temperature of the refrigerating chamber of described refrigerator comprises the following steps:
Human-computer interaction device exports the design temperature of refrigerating chamber;
Temperature in temperature sensor senses refrigerating chamber output temperature sensing signal;
Controller receives the design temperature of described temperature sensing signal and described refrigerating chamber, and the Current Temperatures of refrigerating chamber is obtained according to described temperature sensing signal, the design temperature of the temperature of described refrigerating chamber and described refrigerating chamber is compared, and controls start or the shutdown of compressor according to the result compared.
7. the control method of the temperature of the refrigerating chamber of refrigerator as claimed in claim 6, it is characterized in that, the step of start or shutdown that the described result according to comparing controls compressor specifically comprises:
When the Current Temperatures of described refrigerating chamber exceeds design temperature to the first threshold values of described refrigerating chamber, described controller controls the start of described compressor; And,
When design temperature to the second threshold values lower than described refrigerating chamber of the Current Temperatures of described refrigerating chamber, described controller controls the shutdown of described compressor.
8. the control method of the temperature of the refrigerating chamber of refrigerator as claimed in claim 6, it is characterized in that, the unused time of described compressor is greater than 50% with the ratio of available machine time.
9. the control method of the temperature of the refrigerating chamber of refrigerator as claimed in claim 6, it is characterized in that, the design temperature of described refrigerating chamber comprises 1 DEG C, 2 DEG C, 3 DEG C, 4 DEG C, 5 DEG C, 6 DEG C and 7 DEG C.
10. the control method of the temperature of the refrigerating chamber of refrigerator as claimed in claim 6, is characterized in that, the described step obtaining the Current Temperatures of refrigerating chamber according to described temperature sensing signal specifically comprises:
Described controller judges the resistance value of described temperature sensor according to the magnitude of voltage of testing circuit, determines the Current Temperatures of described refrigerating chamber according to the resistance value of described temperature sensor.
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| CN106969592A (en) * | 2017-03-08 | 2017-07-21 | 河南牧业经济学院 | A kind of supercooling control method of refrigerating plant |
| CN107725349A (en) * | 2017-09-18 | 2018-02-23 | 佛山市中格威电子有限公司 | A kind of compressor analog control system and its method of work |
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| CN110573813A (en) * | 2017-06-12 | 2019-12-13 | Lg电子株式会社 | Refrigerator and control method thereof |
| CN112361701A (en) * | 2020-11-10 | 2021-02-12 | 长虹美菱股份有限公司 | Method for detecting whether refrigerator is normally turned on or off |
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Application publication date: 20141224 |