CN115717808A - Condensation fan control method and device and refrigerator - Google Patents
Condensation fan control method and device and refrigerator Download PDFInfo
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- CN115717808A CN115717808A CN202211490483.9A CN202211490483A CN115717808A CN 115717808 A CN115717808 A CN 115717808A CN 202211490483 A CN202211490483 A CN 202211490483A CN 115717808 A CN115717808 A CN 115717808A
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Abstract
The invention discloses a method and a device for controlling a condensing fan and a refrigerator. Wherein, the method comprises the following steps: after the refrigerator is started, monitoring the temperature difference between the preset refrigerator body temperature and the actual refrigerator body temperature; determining the range of the rotating speed of the fan according to the condensation temperature under the condition that the temperature difference is less than or equal to a preset temperature threshold value; and further determining the fan rotating speed value within the determined fan rotating speed range according to the temperature of the mechanical chamber. According to the invention, a temperature detection point is added in the mechanical chamber, the air volume range which can meet the current system state is judged according to the box body temperature and the condensation temperature, and then the specific rotating speed value is determined according to the mechanical chamber temperature, so that the minimum power consumption of the condensation fan under the condition of ensuring the system stability is achieved, the temperature of the mechanical chamber is controlled, and the temperature change in the box body is not influenced. The cost is saved, the temperature of the mechanical chamber is controlled more accurately, the service life of the unit is guaranteed not to be affected by abnormal high temperature, and the system stability is improved.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a method and a device for controlling a condensing fan and a refrigerator.
Background
The low-temperature refrigerator has an integrated structure comprising a refrigerator body and a mechanical chamber, wherein the mechanical chamber is used as a main distribution space of each motor and each electric device and is always at a higher temperature when the refrigerator runs. However, high temperatures for extended periods of time are not a good operating environment for the electrical devices.
To the high temperature heat dissipation scheme of the mechanical chamber of low temperature refrigerator, at present the market mostly through setting up radiator fan to cool down compressor and drive plate, but the cooling effect is limited and accurate inadequately, and refrigerator unit life-span can receive the influence of unusual high temperature, and unit normal operating receives the influence.
Aiming at the problem that the high-temperature heat dissipation scheme of the mechanical chamber of the refrigerator in the prior art is not accurate enough, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a method and a device for controlling a condensing fan and a refrigerator, and aims to solve the problem that a high-temperature heat dissipation scheme of a mechanical chamber of the refrigerator in the prior art is not accurate enough.
In order to solve the technical problem, the invention provides a method for controlling a condensing fan, wherein the method comprises the following steps: after the refrigerator is started, monitoring the temperature difference between the preset refrigerator body temperature and the actual refrigerator body temperature; determining the range of the rotating speed of the fan according to the condensation temperature under the condition that the temperature difference is less than or equal to a preset temperature threshold value; and further determining the fan rotating speed value within the determined fan rotating speed range according to the temperature of the mechanical chamber.
Further, after monitoring the temperature difference between the preset tank temperature and the actual tank temperature, the method further comprises: and if the temperature difference is greater than a preset temperature threshold value, controlling the rotating speed of the fan to operate at full frequency until the temperature difference is less than or equal to the preset temperature threshold value.
Further, according to the condensation temperature, determining the range of the rotating speed of the fan comprises the following steps: determining a temperature interval in which the condensation temperature is located; determining a corresponding fan rotating speed range according to the temperature interval; wherein the higher the condensation temperature is, the larger the fan rotation speed is.
Further, further determining a fan speed value within the determined fan speed range according to the machine room temperature, comprising: if the temperature of the mechanical chamber is in a first temperature interval, determining the fan rotating speed value as the minimum value in the determined fan rotating speed range; if the temperature of the mechanical chamber is in a second temperature interval, determining the fan rotating speed value as a middle value in the determined fan rotating speed range; and if the temperature of the mechanical chamber is in a third temperature interval, determining the fan rotating speed value as the maximum value in the determined fan rotating speed range.
Further, before determining the fan rotation speed range according to the condensation temperature, the method further comprises the following steps: the condensing temperature is detected according to a temperature sensor at an outlet of a condenser of the refrigerator.
Further, before further determining a fan speed value within the determined fan speed range according to the machine room temperature, the method further comprises: detecting the temperature of a mechanical chamber of a refrigerator according to a temperature sensor in the mechanical chamber; wherein the temperature sensor is disposed at an intermediate bottom plate of a compressor and a driving plate within the machine room.
The invention also provides a condensation fan control device, wherein the device comprises: the temperature monitoring module is used for monitoring the temperature difference between the preset box body temperature and the actual box body temperature after the refrigerator is started; the first processing module is used for determining the range of the rotating speed of the fan according to the condensation temperature after the temperature difference is less than or equal to a preset temperature threshold value; and the second processing module is used for further determining a fan rotating speed value within the determined fan rotating speed range according to the temperature of the mechanical chamber.
Further, the first processing module is specifically configured to determine a temperature interval in which the condensation temperature is located; determining a corresponding fan rotating speed range according to the temperature interval; wherein the higher the condensation temperature is, the larger the fan rotation speed is.
Further, the second processing module is specifically configured to determine that the fan rotation speed value is a minimum value in the determined fan rotation speed range if the machine room temperature is in a first temperature interval; if the temperature of the mechanical chamber is in a second temperature interval, determining the fan rotating speed value as a middle value in the determined fan rotating speed range; and if the temperature of the mechanical chamber is in a third temperature interval, determining the fan rotating speed value as the maximum value in the determined fan rotating speed range.
The invention also provides a refrigerator, which comprises a refrigerator body and a mechanical chamber, wherein the condensation fan control device further comprises: and a temperature sensor disposed at an intermediate bottom plate of the compressor and the driving plate within the machine room.
The invention also provides a computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the method as described above.
By applying the technical scheme of the invention, temperature detection points are added in the mechanical chamber, the air volume range which can meet the current system state is judged according to the box body temperature and the condensation temperature, and then the specific rotating speed value is determined according to the mechanical chamber temperature, so that the minimum power consumption of the condensation fan under the condition of ensuring the system stability is achieved, the temperature of the mechanical chamber of the refrigerator is controlled, and the temperature change in the box body is not influenced. Compare in the setting of the removable dissipation hot-blast fan of traditional heat dissipation scheme, practiced thrift the cost to realized the more accurate control to the machinery room temperature, guaranteed that the life-span of unit can not receive the influence of unusual high temperature, improved system stability.
Drawings
FIG. 1 is a schematic view of a machine room configuration according to an embodiment of the present invention;
fig. 2 is a schematic view of a heat dissipation scheme of a low temperature refrigerator according to an embodiment of the present invention;
FIG. 3 is a flow chart of a condensing fan control method according to an embodiment of the invention;
FIG. 4 is a flowchart of a heat dissipation control scheme of a low temperature refrigerator according to an embodiment of the present invention;
fig. 5 is a block diagram of a condensation fan control apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another like element in a commodity or device comprising the element.
Alternative embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Example 1
The embodiment of the invention provides a method and a device for controlling a condensing fan and a refrigerator, and aims to solve the problem that in the prior art, a high-temperature heat dissipation scheme of a mechanical chamber of the refrigerator is not accurate enough. The refrigerator may be a low-temperature refrigerator, a household refrigerator, a commercial refrigerator, or the like.
In the embodiment, a mechanical chamber temperature detection point is established on the basis of the structures such as a temperature sensor at the outlet of the original condenser of the low-temperature refrigerator, a temperature sensor in the refrigerator body and the like. As shown in the schematic structural diagram of the machine room shown in fig. 1, the machine room at least comprises a condensing fan, a compressor and a driving plate. A machine room temperature sensor may be provided at the drive plate heat sink and the intermediate bottom plate of the compressor for monitoring a higher temperature of the machine room due to heating of the motor. Assuming that there are two compressors (compressor 1 and compressor 2) and two driving plates (driving plate 1 and driving plate 2), the temperature sensor may be disposed at the central point of the above four components.
Example 2
Fig. 2 is a schematic diagram of a heat dissipation scheme of a low-temperature refrigerator according to an embodiment of the present invention, and as shown in fig. 2, a controller may obtain at least four temperature values related to the operation of a refrigerator set: the box temperature T1, the mechanical chamber temperature T2 and the condensation temperature T3 obtained through sensor detection, and the preset box temperature T4, wherein T4 can be set through manual input according to needs. The condensing temperature is the temperature at the outlet of the condenser, the box body temperature is the temperature in the low-temperature box body, and the mechanical chamber temperature is the temperature after the whole mechanical chamber is heated and lifted by the motor. The controller can realize the control of the rotating speed of the fan according to the four temperature values. As described in detail below.
Fig. 3 is a flowchart of a condensing fan control method according to an embodiment of the present invention, as shown in fig. 3, the method includes the steps of:
step S301, after the refrigerator is started, monitoring the temperature difference between the preset refrigerator body temperature and the actual refrigerator body temperature; the temperature difference = preset tank temperature-actual tank temperature;
step S302, under the condition that the temperature difference is less than or equal to a preset temperature threshold value, determining the range of the rotating speed of the fan according to the condensation temperature; before that, the condensation temperature can be detected according to a temperature sensor at the outlet of the condenser of the refrigerator; the condensing fan is arranged in the condenser;
step S303, further determining a fan rotating speed value within the determined fan rotating speed range according to the temperature of the mechanical chamber; heretofore, the machine room temperature may be detected based on a temperature sensor in the machine room of the refrigerator; wherein the temperature sensor is disposed at the compressor and the intermediate base plate of the driving plate in the machine room.
The refrigerator set is mainly divided into two stages during operation, namely a temperature-raising stage and a startup and shutdown stage. When the temperature-pulling stage begins, the difference between the actual box temperature and the preset box temperature is too large, the temperature of the mechanical chamber is close to the ambient temperature, the box temperature is used as a main index at the moment, and the full-frequency operation of the fan is controlled, namely, if the temperature difference is greater than a preset temperature threshold value, the full-frequency operation of the rotating speed of the fan is controlled until the temperature difference is less than or equal to the preset temperature threshold value. In the full-frequency operation process of the fan, along with the gradual reduction of the box body temperature, the temperature difference between the preset box body temperature and the actual box body temperature is smaller and smaller, and after T4-T1 is smaller than or equal to 5 ℃ (the preset temperature threshold), the start-up and shutdown stage is started. The starting and stopping stage is the stopping state of the compressor, the compressor is started to operate after the temperature changes due to actions such as opening and closing a door, and the like, and the compressor is stopped continuously after the temperature of the box body meets the requirement.
In the startup and shutdown stage, the dependence of the box body temperature on the condensing fan is reduced, and the mechanical chamber temperature and the condensing temperature are used as main detection indexes. Determining a temperature interval of the condensation temperature; determining a corresponding fan rotating speed range according to the temperature interval; the fan speed range is set in the fan speed range, and the fan speed range is set in the fan speed range according to the fan speed range. Based on this, can confirm the comparatively suitable rotational speed scope of fan according to present condensation temperature. The minimum power consumption of the condensing fan under the condition of ensuring the system stability is achieved as much as possible.
After the fan rotating speed range is determined, further determining a fan rotating speed value in the determined fan rotating speed range according to the temperature of the mechanical chamber, specifically: if the temperature of the mechanical chamber is in the first temperature interval, determining the fan rotating speed value as the minimum value in the determined fan rotating speed range; if the temperature of the mechanical chamber is in the second temperature interval, determining the rotating speed value of the fan as the middle value in the determined rotating speed range of the fan; and if the temperature of the mechanical chamber is in the third temperature interval, determining the fan rotating speed value as the maximum value in the determined fan rotating speed range. Based on this, this embodiment judges the amount of wind scope that can satisfy current system state according to box temperature and condensation temperature, later according to the mechanical chamber temperature confirm specific rotational speed numerical value to reaching the minimum consumption of condensation fan under the assurance system stability condition, guaranteeing that the temperature change in the box is not influenced when controlling the temperature of refrigerator mechanical chamber. Compare in the setting of the removable dissipation hot-blast fan of traditional heat dissipation scheme, practiced thrift the cost to realized the more accurate control to the machinery room temperature, guaranteed that the life-span of unit can not receive the influence of unusual high temperature, improved system stability.
Example 3
In this embodiment, a frequency conversion fan with a fan rotation speed range of 0-1400rpm is taken as an example to describe the application in detail. Fig. 4 is a flowchart of a heat dissipation control scheme of a low-temperature refrigerator according to an embodiment of the present invention, as shown in fig. 4, the flowchart includes:
step S401, the unit is started.
Step S402, detecting the box body temperature T1, calculating the temperature difference between the preset box body temperature T4 and T1, judging that T4-T1 is less than or equal to 5 ℃, if so, executing step S404, and otherwise, executing step S403.
And step S403, the fan runs at full frequency.
In step S404, the condensation temperature T3 is detected, and the temperature range of the condensation temperature T3 is determined. If T3 is less than 30 ℃, the rotating speed range of the fan is 500-800rpm.
And S405, if the temperature T3 is more than or equal to 30 ℃ and less than 40 ℃, the rotating speed range of the fan is 800-1100rpm.
And S406, if the T3 is more than or equal to 40 ℃, the rotating speed range of the fan is 1100-1400rpm.
In step S407, the machine room temperature T2 is detected, and the temperature interval of T2 is determined. If T2 is less than or equal to 40 ℃, the rotating speed of the fan is the minimum value in the rotating speed range of the fan.
And step S408, if T2 is more than or equal to 40 ℃ and less than 50 ℃, the rotating speed of the fan is the middle value in the rotating speed range of the fan.
And step S409, if T2 is more than or equal to 50 ℃, the rotating speed of the fan is the maximum value in the rotating speed range of the fan.
In step S410, the process ends.
In the embodiment, when the operating state of the fan is judged according to the temperature of the mechanical chamber, when the temperature of the mechanical chamber is below 40 ℃, the rotating speed of the fan may be at the minimum rotating speed in the range of the rotating speed of the fan, when the temperature of the mechanical chamber is between 40 ℃ and 50 ℃, the rotating speed of the fan may be at the middle rotating speed in the range of the rotating speed of the fan, and when the temperature of the mechanical chamber is greater than 50 ℃, the rotating speed of the fan may be at the maximum rotating speed in the range of the rotating speed of the fan. The rotating speed range meets the temperature requirement of the low-temperature box, and simultaneously, the specific numerical value is determined according to the temperature of the mechanical chamber, and the high rotating speed is not required blindly, so that the control method also achieves the energy-saving effect.
Example 4
Corresponding to the flow chart of the control method of the condensing fan introduced in fig. 3, the present embodiment provides a control device of the condensing fan, such as the structural block diagram of the control device of the condensing fan shown in fig. 5, and the device includes:
the temperature monitoring module 10 is used for monitoring the temperature difference between the preset box body temperature and the actual box body temperature after the refrigerator is started;
the first processing module 20 is configured to determine a fan rotation speed range according to the condensation temperature when the temperature difference is less than or equal to a preset temperature threshold;
and the second processing module 30 is used for further determining a fan rotating speed value within the determined fan rotating speed range according to the temperature of the mechanical chamber.
This embodiment is reaching the minimum consumption of condensation fan under the assurance system stabilization circumstances, guarantees that the temperature change is not influenced in the box when controlling the temperature of refrigerator machine room.
The first processing module 20 is specifically configured to determine a temperature interval where the condensation temperature is located; determining a corresponding fan rotating speed range according to the temperature interval; wherein, the higher the condensation temperature, the higher the fan rotating speed. Based on this, can confirm the comparatively suitable rotational speed scope of fan according to current condensing temperature. The minimum power consumption of the condensing fan under the condition of ensuring the system stability is achieved as much as possible.
The second processing module 30 is specifically configured to determine that the fan rotation speed value is a minimum value in the determined fan rotation speed range if the temperature of the machine chamber is in the first temperature interval; if the temperature of the mechanical chamber is in the second temperature interval, determining the rotating speed value of the fan as the middle value in the determined rotating speed range of the fan; and if the temperature of the mechanical chamber is in the third temperature interval, determining the fan rotating speed value as the maximum value in the determined fan rotating speed range. Based on this, this embodiment judges the amount of wind scope that can satisfy current system state according to box temperature and condensation temperature, later according to the mechanical chamber temperature confirm specific rotational speed numerical value to reaching the minimum consumption of condensation fan under the assurance system stability condition, guaranteeing that the temperature change in the box is not influenced when controlling the temperature of refrigerator mechanical chamber.
The embodiment also provides a refrigerator, which comprises a box body and a mechanical chamber, wherein the condensation fan control device further comprises: and a temperature sensor disposed at the compressor and the intermediate base plate of the driving plate in the machine room. The embodiment adds a temperature detection point in the mechanical chamber of the refrigerator, judges the air volume range capable of meeting the current system state according to the temperature of the refrigerator body and the condensation temperature, and then determines a specific rotating speed value according to the temperature of the mechanical chamber, so that the minimum power consumption of a condensation fan under the condition of ensuring the stability of the system is achieved, and the change of the temperature in the refrigerator body is not influenced when the temperature of the mechanical chamber of the refrigerator is controlled. Compare in the setting of the removable dissipation hot-blast fan of traditional heat dissipation scheme, practiced thrift the cost to realized the more accurate control to the machinery room temperature, guaranteed that the life-span of unit can not receive the influence of unusual high temperature, improved system stability.
Example 5
The embodiment of the present invention provides software for implementing the technical solutions described in the above embodiments and preferred embodiments.
An embodiment of the present invention provides a non-volatile computer storage medium, where a computer-executable instruction is stored in the computer storage medium, and the computer-executable instruction may execute a condensation fan control method in any of the above method embodiments.
The storage medium stores the software, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memories, etc.
The product can execute the method provided by the embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A method for controlling a condensing fan is characterized by comprising the following steps:
after the refrigerator is started, monitoring the temperature difference between the preset refrigerator body temperature and the actual refrigerator body temperature;
determining the range of the rotating speed of the fan according to the condensation temperature under the condition that the temperature difference is less than or equal to a preset temperature threshold value;
and further determining the fan rotating speed value within the determined fan rotating speed range according to the temperature of the mechanical chamber.
2. The method of claim 1, wherein after monitoring the temperature differential between the preset tank temperature and the actual tank temperature, the method further comprises:
and if the temperature difference is greater than a preset temperature threshold value, controlling the rotating speed of the fan to operate at full frequency until the temperature difference is less than or equal to the preset temperature threshold value.
3. The method of claim 1, wherein determining a fan speed range from the condensing temperature comprises:
determining a temperature interval in which the condensation temperature is located;
determining a corresponding fan rotating speed range according to the temperature interval; wherein the higher the condensation temperature is, the larger the fan rotation speed is.
4. The method of claim 1, wherein further determining a fan speed value within the determined fan speed range based on the machine compartment temperature comprises:
if the temperature of the mechanical chamber is in a first temperature interval, determining the fan rotating speed value as the minimum value in the determined fan rotating speed range;
if the temperature of the mechanical chamber is in a second temperature interval, determining the fan rotating speed value as a middle value in the determined fan rotating speed range;
and if the temperature of the mechanical chamber is in a third temperature interval, determining the fan rotating speed value as the maximum value in the determined fan rotating speed range.
5. The method of any of claims 1-4, wherein prior to determining the fan speed range from the condensing temperature, the method further comprises:
the condensing temperature is detected according to a temperature sensor at an outlet of a condenser of the refrigerator.
6. The method of any of claims 1-4, further comprising, prior to further determining a fan speed value within the determined fan speed range based on the machine compartment temperature:
detecting a temperature of a machine chamber of a refrigerator according to a temperature sensor in the machine chamber; wherein the temperature sensor is disposed at an intermediate bottom plate of the compressor and the driving plate within the machine room.
7. A condensing fan control apparatus, characterized in that the apparatus comprises:
the temperature monitoring module is used for monitoring the temperature difference between the preset box body temperature and the actual box body temperature after the refrigerator is started;
the first processing module is used for determining the range of the rotating speed of the fan according to the condensation temperature under the condition that the temperature difference is less than or equal to a preset temperature threshold value;
and the second processing module is used for further determining a fan rotating speed value within the determined fan rotating speed range according to the temperature of the mechanical chamber.
8. The apparatus of claim 7,
the first processing module is specifically configured to determine a temperature interval in which the condensation temperature is located; determining a corresponding fan rotating speed range according to the temperature interval; wherein the higher the condensation temperature is, the larger the fan rotation speed is.
9. The apparatus of claim 1,
the second processing module is specifically configured to determine that the fan speed value is a minimum value in the determined fan speed range if the temperature of the mechanical chamber is within a first temperature interval; if the temperature of the mechanical chamber is in a second temperature interval, determining the fan rotating speed value as a middle value in the determined fan rotating speed range; and if the temperature of the mechanical chamber is in a third temperature interval, determining the fan rotating speed value as the maximum value in the determined fan rotating speed range.
10. A refrigerator comprising a cabinet and a machine room, the condensing fan controlling apparatus of any one of claims 7 to 9, further comprising:
and a temperature sensor disposed at an intermediate bottom plate of the compressor and the driving plate within the machine room.
11. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the method according to any one of claims 1 to 6.
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| CN202211490483.9A CN115717808A (en) | 2022-11-25 | 2022-11-25 | Condensation fan control method and device and refrigerator |
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| CN202211490483.9A CN115717808A (en) | 2022-11-25 | 2022-11-25 | Condensation fan control method and device and refrigerator |
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