CN109764477B - Defrosting control method and device - Google Patents
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- 238000010257 thawing Methods 0.000 title claims abstract description 111
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- 238000005303 weighing Methods 0.000 claims description 12
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Abstract
The invention provides a defrosting control method and a defrosting control device, wherein the method comprises the following steps: detecting the weight of the heat exchanger; determining whether the detected weight of the heat exchanger reaches a preset weight condition; in a case where it is determined that the weight condition is reached, control enters a defrosting mode. The problems that the control process is too complicated and the control cost is too high in the existing defrosting control mode can be effectively solved through the defrosting control mode, and the technical effect of controlling the defrosting process at low cost and high efficiency is achieved.
Description
Technical Field
The invention relates to the technical field of equipment control, in particular to a defrosting control method and device.
Background
The frosting of the heat exchanger can cause the heat transfer efficiency of the heat exchanger to be reduced and the wind resistance to be increased, thereby influencing the operation efficiency of the unit. Therefore, a defrosting operation is required, and detection and control of defrosting are very important. At present, a defrosting thermal bulb is generally adopted in the industry to detect and control defrosting of a heat exchanger, but the problems of untimely defrosting, insufficient defrosting, wrong defrosting and the like can occur in the single detection control mode, the reliable operation of a unit is seriously influenced, the unit can be damaged even, and the comfort level of a user is also influenced.
Although some detection methods such as frost layer microscopic imaging and laser frost thickness measurement appear at present, the methods are complex to control and high in cost, and cannot be effectively popularized and used in a short time.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a defrosting control method and device, and aims to solve the problems that the existing defrosting control process is too complicated and the control cost is too high.
In one aspect, a defrosting control method is provided, including:
detecting the weight of the heat exchanger;
determining whether the detected weight of the heat exchanger reaches a preset weight condition;
in a case where it is determined that the weight condition is reached, control enters a defrosting mode.
In one embodiment, detecting the weight of the heat exchanger comprises:
and acquiring the weight of the heat exchanger through a weighing sensor at the bottom of the heat exchanger.
In one embodiment, determining whether the detected weight of the heat exchanger meets a preset weight condition includes:
acquiring the initial weight of the heat exchanger;
calculating a ratio of the detected weight of the heat exchanger to the initial weight;
determining whether the ratio is greater than a preset threshold;
in a case where it is determined that the preset threshold value is reached, it is determined that a preset weight condition is reached.
In one embodiment, the above method further comprises:
and under the condition that the ratio is determined to be larger than a preset threshold, controlling the operating frequency of the compressor according to the difference value between the ratio and the preset threshold, wherein different difference value intervals correspond to different operating frequencies.
In one embodiment, the above method further comprises;
and controlling the compressor to operate according to a preset operation frequency under the conditions that the ratio is determined to be not greater than the preset threshold value, greater than the first threshold value and the duration reaches a preset duration.
In one embodiment, in the case that it is determined that the preset threshold is reached, before it is determined that a preset weight condition is reached, the method further comprises:
determining whether a weight of the heat exchanger reaches a first threshold;
in a case where it is determined that the first threshold value is not reached, determining whether a fifth threshold value is reached;
setting a frosting weight validation flag to a validation state if it is determined that the fifth threshold is reached, wherein the first threshold is greater than the fifth threshold.
In one embodiment, after controlling to enter the defrosting mode, the method further comprises:
detecting the weight of the heat exchanger;
determining whether the detected weight of the heat exchanger does not reach a preset weight condition;
and exiting the defrosting mode under the condition that the preset weight condition is not met.
In one embodiment, determining whether the detected weight of the heat exchanger meets a preset weight condition includes:
determining whether the detected weight of the heat exchanger reaches a second threshold;
in a case where it is determined that the second threshold value is reached, it is determined that a preset weight condition is reached.
In one embodiment, after determining whether the detected weight of the heat exchanger reaches the second threshold, the method further comprises:
in an instance in which it is determined that the second threshold has not been reached, determining whether a weight of the heat exchanger reaches a third threshold;
and under the condition that the third threshold is reached and the duration time reaches the preset time, determining that the preset weight condition is reached, wherein the second threshold is greater than the third threshold.
In one embodiment, prior to determining whether the detected weight of the heat exchanger reaches a preset weight condition, the method further comprises:
determining whether the weight of the heat exchanger reaches a third threshold;
in a case where it is determined that the third threshold value is not reached, determining whether a fourth threshold value is reached;
setting a frosting weight validation flag to a validation state if it is determined that the fourth threshold is reached, wherein the third threshold is greater than the fourth threshold.
In another aspect, there is provided a defrosting control apparatus including:
the first detection module is used for detecting the weight of the heat exchanger;
the first determining module is used for determining whether the detected weight of the heat exchanger reaches a preset weight condition;
and the first control module is used for controlling to enter a defrosting mode under the condition that the weight condition is determined to be reached.
In still another aspect, there is provided an air conditioner including: the defrosting control device is provided.
In yet another aspect, a network device is provided, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the above method when executing the computer program.
In a further aspect, a non-transitory computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the above-mentioned method.
In one embodiment, whether the detected weight of the heat exchanger reaches a preset weight condition is determined by detecting the weight of the heat exchanger, and in the case that the weight condition is determined to be reached, the defrosting mode is controlled to be entered. The problems that the control process is too complicated and the control cost is too high in the existing defrosting control mode can be effectively solved through the defrosting control mode, and the technical effect of controlling the defrosting process at low cost and high efficiency is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a method flow diagram of a defrosting control method according to an embodiment of the invention;
FIG. 2 is another method flow diagram of a defrosting control method according to an embodiment of the invention;
fig. 3 is a block diagram of a defrosting 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 more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
The method comprises the steps of arranging a weighing sensor at the bottom of an outdoor heat exchanger, detecting the weight change of the outdoor heat exchanger in real time, intelligently controlling and adjusting the defrosting time of a unit and the defrosting operation time, and adjusting the frequency of a compressor to meet defrosting requirements under different conditions to avoid the problems of wrong defrosting, such as untimely defrosting, no defrosting with frost, no defrosting without frost and the like, so that the aims of timely defrosting, defrosting according to needs and improving defrosting efficiency are fulfilled, and the comfort level of a user is effectively improved while the safe and reliable operation of the unit is ensured.
Namely, the weight of the frost layer of the heat exchanger is detected in real time through the weighing sensor, so that the severity of frosting and the completeness of defrosting of the heat exchanger can be visually reflected, and the accuracy of frosting and defrosting detection is ensured. The defrosting control strategy takes the weight as a reference, and simultaneously adjusts the frequency of the compressor to meet defrosting requirements under different conditions, so that timely defrosting and defrosting as required of the unit are realized, and safe and reliable operation of the unit is effectively ensured. By means of the method, the defrosting entering time and the defrosting operation parameters can be intelligently controlled, so that unnecessary defrosting time is reduced, the comfort level and the satisfaction degree of a user are improved, and the complaint rate of the user is reduced.
Based on this, in this example, a defrosting control method is provided, as shown in fig. 1, which may include the steps of:
step 101: detecting the weight of the heat exchanger;
step 102: determining whether the detected weight of the heat exchanger reaches a preset weight condition;
step 103: in a case where it is determined that the weight condition is reached, control enters a defrosting mode.
In the above example, it is determined whether the detected weight of the heat exchanger reaches a preset weight condition by detecting the weight of the heat exchanger, and in the case where it is determined that the weight condition is reached, the control is performed to enter the defrosting mode. The problems that the control process is too complicated and the control cost is too high in the existing defrosting control mode can be effectively solved through the defrosting control mode, and the technical effect of controlling the defrosting process at low cost and high efficiency is achieved.
In order to realize efficient and low-cost weight detection, a weighing sensor can be arranged at the bottom of the heat exchanger, for example, the weighing sensor can be arranged at three points selected at the bottom of the heat exchanger, so that the measurement result is more accurate. Correspondingly, the weight of the heat exchanger is detected, and specifically, the weight of the heat exchanger can be obtained through a weighing sensor at the bottom of the heat exchanger.
When the method is implemented, whether the threshold is reached can be determined through the difference value, and whether the threshold is reached can also be determined through the ratio value. However, whichever method of determination is used, a reference comparison value, which is the weight of the heat exchanger in the absence of frost, is required as a reference. For example, determining whether the detected weight of the heat exchanger reaches a preset weight condition may include: acquiring the initial weight of the heat exchanger; calculating a ratio of the detected weight of the heat exchanger to the initial weight; determining whether the ratio is greater than a preset threshold; in a case where it is determined that the preset threshold value is reached, it is determined that a preset weight condition is reached.
Further, after calculating the ratio of the detected weight of the heat exchanger to the initial weight, the method may further include: in the event that it is determined that the ratio is not greater than the preset threshold, determining whether the ratio is greater than a first threshold; and under the condition that the duration time is determined to be greater than the first threshold value and reaches a preset duration time, determining that a preset weight condition is reached.
Based on the difference of the ratio, the compressor can be controlled to operate in different manners, for example, under the condition that the ratio is determined to be greater than a preset threshold, the operating frequency of the compressor is controlled according to the difference between the ratio and the preset threshold, wherein different difference intervals correspond to different operating frequencies; and controlling the compressor to operate according to a preset operation frequency under the conditions that the ratio is determined to be not greater than the preset threshold value, greater than the first threshold value and the duration reaches a preset duration.
Further, a frosting weight validation flag may be set, and in the case that it is determined that a preset threshold is reached, it may be determined whether the weight of the heat exchanger reaches a first threshold before it is determined that a preset weight condition is reached; in a case where it is determined that the first threshold value is not reached, determining whether a fifth threshold value is reached; setting a frosting weight validation flag to a validation state if it is determined that the fifth threshold is reached, wherein the first threshold is greater than the fifth threshold. That is, a relatively small threshold value is set, based on which it is possible to determine whether or not the frost weight enable flag is turned on.
In the implementation process, the judgment can be performed in a ratio mode or a non-ratio mode, for example, whether the detected weight of the heat exchanger reaches a second threshold value can be determined; determining that a preset weight condition is reached if it is determined that the second threshold is reached; in an instance in which it is determined that the second threshold has not been reached, determining whether a weight of the heat exchanger reaches a third threshold; and under the condition that the third threshold is reached and the duration time reaches the preset time, determining that the preset weight condition is reached, wherein the second threshold is greater than the third threshold.
The control of entering the defrosting mode is performed, the control of exiting the defrosting mode is performed, and after the control of entering the defrosting mode, the weight of the heat exchanger can be detected; determining whether the detected weight of the heat exchanger does not reach a preset weight condition; and exiting the defrosting mode under the condition that the weight condition is not met.
In order to make defrosting and defrosting quit more controllable, a frosting weight effective mark can be set, defrosting is controlled according to the frosting weight effective mark only when the frosting weight effective mark is effective, and if the frosting weight effective mark is not effective, the heating mode is always kept. Before determining whether the detected weight of the heat exchanger reaches a preset weight condition, determining whether the weight of the heat exchanger reaches a third threshold value; in a case where it is determined that the third threshold value is not reached, determining whether a fourth threshold value is reached; setting a frosting weight validation flag to a validation state if it is determined that the fourth threshold is reached, wherein the third threshold is greater than the fourth threshold.
For example: when defrosting entry control is performed, different judgment thresholds may be set, for example, a weight threshold (the threshold is a slightly larger threshold) may be set, and if it is determined that the weight threshold is reached, entry into a defrosting mode may be controlled, and a third threshold (the threshold is a slightly smaller threshold) may be set.
In practical implementation, the frequency of the compressor may be adjusted to meet defrosting requirements of different degrees, for example, after the defrosting mode is controlled to be entered under the condition that the weight threshold is determined to be reached, the operating frequency of the compressor may be controlled according to the difference between the detected weight of the heat exchanger of the outdoor unit and a preset weight threshold.
The above method is described below with reference to a specific example, however, it should be noted that the specific example is only for better describing the present application and is not to be construed as limiting the present application.
In the embodiment, a defrosting detection and intelligent control method is provided, a detection mode of a weighing sensor is adopted, the weight change of the heat exchanger during defrosting is detected in real time, and the frosting and defrosting degree is reflected through the weight change of the heat exchanger, so that the accuracy and reliability of frosting and defrosting detection are effectively ensured.
Specifically, three supporting points can be selected at the bottom of the outdoor unit heat exchanger, and a weighing sensor is arranged on each supporting point (three points form a stable supporting surface, and the weight change of the heat exchanger can be directly measured), so that the weight data of the outdoor heat exchanger can be detected and recorded in real time, and the frosting and defrosting processes on the surface of the heat exchanger can be judged according to the weight change of the heat exchanger.
As shown in fig. 2, in the initial stage of the startup heating operation, the unit is forced to defrost once, the four-way valve is reversed to be used as an action sign, when defrosting is finished (that is, the four-way valve is reversed to be switched to the heating mode), the weight Mo of the heat exchanger at this time is detected and recorded, and at this time, Mo is the initial weight set by the heat exchanger. As heating continues, frost begins to form on the surface of the outdoor heat exchanger (evaporator), and the weighing sensor detects the weight M of the outdoor heat exchanger in real time.
And the weighing sensor detects the weight M of the heat exchanger of the outdoor unit, when M/Mo is more than C, the frosting weight effective mark of the heat exchanger is controlled to be 1, otherwise, the frosting weight effective mark is 0, wherein C is a critical value for entering and exiting defrosting.
1) The frosting weight effective command is 0:
when the frosting weight effective command is 0, the unit continuously operates in the heating mode and does not enter the defrosting mode;
2) the frosting weight effective command is 1:
and entering defrosting control, and judging whether M/Mo is detected to be more than A or not when the frosting weight effective command is 1.
If M/Mo > A, then directly enter defrost mode, where the compressor operating frequency f may be controlled as in Table 1:
TABLE 1
| Frosting weight M/Mo | Effective compressor frequency f |
| (A，A1) | f*k2 |
| [A1，A2) | f*k3 |
| ＞A2 | f*k4 |
If M/Mo is not more than A, judging whether M/Mo is continuously detected to be more than B within the time T0;
if M/Mo is detected to be more than B in the continuous time T0, entering a defrosting mode, and controlling the running frequency f of the compressor to be f k 1;
if M/Mo is detected to be more than B within the time of non-continuous T0, the frosting degree of the surface of the heat exchanger is relatively low, defrosting is not needed, the unit keeps running in a heating mode, and the unit does not enter a defrosting mode.
When the defrosting mode is realized, the four-way valve can be used for reversing to serve as an action mark to indicate whether defrosting is quitted or not, after the heating mode is converted into the defrosting mode, the weighing sensor monitors the weight M of the heat exchanger of the outdoor unit in real time, when M/Mo is less than C, defrosting is quitted, and the four-way valve is switched to the heating mode.
Wherein A, B, C are all coefficients, and satisfy A > B > C > 100%; A. a1 and A2 are both coefficients, and satisfy A2 > A1 > A > 100%; k1, k2, k3 and k4 are all coefficients, and satisfy k4 > k3 > k2 > k1 > 100%. In the above example, a control method for detecting weight and judging frosting of a heat exchanger is provided, a weight defrosting control strategy is adopted, and meanwhile, the frequency of a compressor is adjusted to meet defrosting requirements of different degrees, so that the requirements of timely defrosting and defrosting as required of a unit are met, the defrosting efficiency is improved, and the system can be operated safely and reliably. And the defrosting entering time and the defrosting operation parameters are intelligently controlled, so that unnecessary defrosting time can be reduced, and the comfort level of the air conditioner of a user is effectively improved.
Based on the same inventive concept, the embodiment of the present invention further provides a defrosting control device, as described in the following embodiments. Because the principle of solving the problems of the defrosting control device is similar to that of the defrosting control method, the implementation of the defrosting control device can refer to the implementation of the defrosting control method, and repeated parts are not described again. As used hereinafter, the term "unit" or "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated. Fig. 3 is a block diagram of a defrosting control apparatus according to an embodiment of the present invention, and as shown in fig. 3, the defrosting control apparatus may include: the first detection module 301, the first determination module 302, and the first control module 303, the structure of which will be described below.
The first detection module 301 is used for detecting the weight of the heat exchanger;
a first determining module 302, configured to determine whether the detected weight of the heat exchanger reaches a preset weight condition;
a first control module 303 for controlling entry into a defrost mode if it is determined that the weight condition is reached.
In one embodiment, the first determining module 302 may be specifically configured to obtain an initial weight of the heat exchanger; calculating a ratio of the detected weight of the heat exchanger to the initial weight; determining whether the ratio is greater than a preset threshold; in a case where it is determined that the preset threshold value is reached, it is determined that a preset weight condition is reached.
In one embodiment, the first determining module 302 may be specifically configured to, after calculating the ratio of the detected weight of the heat exchanger to the initial weight, determine whether the ratio is greater than a first threshold value if it is determined that the ratio is not greater than the preset threshold value; and under the condition that the duration time is determined to be greater than the first threshold value and reaches a preset duration time, determining that a preset weight condition is reached.
In an embodiment, the first determining module 302 may further control the operating frequency of the compressor according to a difference between the ratio and a preset threshold when it is determined that the ratio is greater than the preset threshold, where different difference intervals correspond to different operating frequencies.
In one embodiment, the first determining module 302 may further control the compressor to operate according to a preset operating frequency when it is determined that the ratio is not greater than the preset threshold, is greater than the first threshold, and has a duration reaching a preset duration.
In one embodiment, the first determining module 302 may specifically determine whether the weight of the heat exchanger reaches a first threshold value before determining that a preset weight condition is reached in the case that it is determined that the preset threshold value is reached; in a case where it is determined that the first threshold value is not reached, determining whether a fifth threshold value is reached; setting a frosting weight validation flag to a validation state if it is determined that the fifth threshold is reached, wherein the first threshold is greater than the fifth threshold.
In one embodiment, the apparatus may further include: the second detection module is used for detecting the weight of the heat exchanger after the defrosting mode is controlled to be started; the second determining module is used for determining whether the detected weight of the heat exchanger does not reach a preset weight condition; and the second control module is used for exiting the defrosting mode under the condition that the preset weight condition is not met.
In one embodiment, the first determining module 302 may specifically determine whether the detected weight of the heat exchanger reaches a second threshold; in a case where it is determined that the second threshold value is reached, it is determined that a preset weight condition is reached.
In an embodiment, the first determining module 303 may specifically determine whether the weight of the heat exchanger reaches a third threshold value when it is determined that the second threshold value is not reached; and under the condition that the third threshold is reached and the duration time reaches the preset time, determining that the preset weight condition is reached, wherein the second threshold is greater than the third threshold.
In one embodiment, prior to determining whether the detected weight of the heat exchanger reaches a preset weight condition, it may be determined whether the weight of the heat exchanger reaches a third threshold; in a case where it is determined that the third threshold value is not reached, determining whether a fourth threshold value is reached; setting a frosting weight validation flag to a validation state if it is determined that the fourth threshold is reached, wherein the third threshold is greater than the fourth threshold.
In another embodiment, a software is provided, which is used to execute the technical solutions described in the above embodiments and preferred embodiments.
In another embodiment, a storage medium is provided, in which the software is stored, and the storage medium includes but is not limited to: optical disks, floppy disks, hard disks, erasable memory, etc.
From the above description, it can be seen that the embodiments of the present invention achieve the following technical effects: the method comprises the steps of determining whether the detected weight of the heat exchanger reaches a preset weight condition or not by detecting the weight of the heat exchanger, and controlling to enter a defrosting mode under the condition that the weight condition is determined to be reached. The problems that the control process is too complicated and the control cost is too high in the existing defrosting control mode can be effectively solved through the defrosting control mode, and the technical effect of controlling the defrosting process at low cost and high efficiency is achieved.
Although various specific embodiments are mentioned in the disclosure of the present application, the present application is not limited to the cases described in the industry standards or the examples, and the like, and some industry standards or the embodiments slightly modified based on the implementation described in the custom manner or the examples can also achieve the same, equivalent or similar, or the expected implementation effects after the modifications. Embodiments employing such modified or transformed data acquisition, processing, output, determination, etc., may still fall within the scope of alternative embodiments of the present application.
Although the present application provides method steps as described in an embodiment or flowchart, more or fewer steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. When an apparatus or client product in practice executes, it may execute sequentially or in parallel (e.g., in a parallel processor or multithreaded processing environment, or even in a distributed data processing environment) according to the embodiments or methods shown in the figures. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, 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 process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
The devices or modules and the like explained in the above embodiments may be specifically implemented by a computer chip or an entity, or implemented by a product with certain functions. For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the present application, the functions of each module may be implemented in one or more pieces of software and/or hardware, or a module that implements the same function may be implemented by a combination of a plurality of sub-modules, and the like. The above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and other divisions may be realized in practice, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Those skilled in the art will also appreciate that, in addition to implementing the controller as pure computer readable program code, the same functionality can be implemented by logically programming method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Such a controller may therefore be considered as a hardware component, and the means included therein for performing the various functions may also be considered as a structure within the hardware component. Or even means for performing the functions may be regarded as being both a software module for performing the method and a structure within a hardware component.
The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
From the above description of the embodiments, it is clear to those skilled in the art that the present application can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for enabling a computer device (which may be a personal computer, a mobile terminal, a server, or a network device) to execute the method according to the embodiments or some parts of the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
While the present application has been described by way of examples, those of ordinary skill in the art will appreciate that there are numerous variations and permutations of the present application that do not depart from the spirit of the present application and that the appended embodiments are intended to include such variations and permutations without departing from the present application.
Claims (13)
1. A defrosting control method is characterized by comprising the following steps:
detecting the weight of the heat exchanger;
determining whether the detected weight of the heat exchanger reaches a preset weight condition, wherein the method comprises the following steps: acquiring the initial weight of the heat exchanger; calculating a ratio of the detected weight of the heat exchanger to the initial weight; determining whether the ratio is greater than a preset threshold; determining that a preset weight condition is reached if it is determined that the preset threshold is reached, and determining whether the ratio is greater than a first threshold if it is determined that the ratio is not greater than the preset threshold;
determining that a preset weight condition is reached under the condition that the duration time is determined to be greater than the first threshold value and reaches a preset duration time;
in a case where it is determined that the weight condition is reached, control enters a defrosting mode.
2. The method of claim 1, wherein detecting the weight of the heat exchanger comprises:
and acquiring the weight of the heat exchanger through a weighing sensor at the bottom of the heat exchanger.
3. The method of claim 1, further comprising:
and under the condition that the ratio is determined to be larger than a preset threshold, controlling the operating frequency of the compressor according to the difference value between the ratio and the preset threshold, wherein different difference value intervals correspond to different operating frequencies.
4. The method of claim 1, further comprising;
and controlling the compressor to operate according to a preset operation frequency under the conditions that the ratio is determined to be not greater than the preset threshold value, greater than the first threshold value and the duration reaches a preset duration.
5. The method of claim 4, wherein in the event that the predetermined threshold is determined to be reached, prior to determining that a predetermined weight condition is reached, the method further comprises:
determining whether a weight of the heat exchanger reaches a first threshold;
in a case where it is determined that the first threshold value is not reached, determining whether a fifth threshold value is reached;
setting a frosting weight validation flag to a validation state if it is determined that the fifth threshold is reached, wherein the first threshold is greater than the fifth threshold.
6. The method of claim 1, wherein after controlling entry into defrost mode, the method further comprises:
detecting the weight of the heat exchanger;
determining whether the detected weight of the heat exchanger does not reach a preset weight condition;
and exiting the defrosting mode under the condition that the preset weight condition is not met.
7. The method of claim 1, wherein determining whether the detected weight of the heat exchanger meets a preset weight condition comprises:
determining whether the detected weight of the heat exchanger reaches a second threshold;
in a case where it is determined that the second threshold value is reached, it is determined that a preset weight condition is reached.
8. The method of claim 7, after determining whether the detected weight of the heat exchanger reaches a second threshold, further comprising:
in an instance in which it is determined that the second threshold has not been reached, determining whether a weight of the heat exchanger reaches a third threshold;
and under the condition that the third threshold is reached and the duration time reaches the preset time, determining that the preset weight condition is reached, wherein the second threshold is greater than the third threshold.
9. The method of claim 8, wherein prior to determining whether the detected weight of the heat exchanger meets a preset weight condition, the method further comprises:
determining whether the weight of the heat exchanger reaches a third threshold;
in a case where it is determined that the third threshold value is not reached, determining whether a fourth threshold value is reached;
setting a frosting weight validation flag to a validation state if it is determined that the fourth threshold is reached, wherein the third threshold is greater than the fourth threshold.
10. A defrosting control apparatus characterized by comprising:
the first detection module is used for detecting the weight of the heat exchanger;
the first determining module is configured to determine whether the detected weight of the heat exchanger reaches a preset weight condition, and specifically configured to: acquiring the initial weight of the heat exchanger; calculating a ratio of the detected weight of the heat exchanger to the initial weight; determining whether the ratio is greater than a preset threshold; determining that a preset weight condition is reached if it is determined that the preset threshold is reached; the first determination module is further used for determining whether the ratio is larger than a first threshold value or not under the condition that the ratio is determined not to be larger than the preset threshold value after the ratio of the detected weight of the heat exchanger to the initial weight is calculated; determining that a preset weight condition is reached under the condition that the duration time is determined to be greater than the first threshold value and reaches a preset duration time;
and the first control module is used for controlling to enter a defrosting mode under the condition that the weight condition is determined to be reached.
11. An air conditioner, comprising: the defrosting control unit of claim 10.
12. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any of claims 1 to 9 when executing the computer program.
13. A non-transitory computer readable storage medium, having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method of any of claims 1 to 9.
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| CN112013609B (en) * | 2019-05-28 | 2022-12-30 | 青岛海尔特种电冰柜有限公司 | Air-cooled unit with automatic defrosting function and display cabinet with same |
| CN114543268A (en) * | 2022-03-15 | 2022-05-27 | 海信（山东）空调有限公司 | Air conditioner and defrosting and descaling early warning control method thereof |
| CN115289767B (en) * | 2022-07-25 | 2024-03-19 | 珠海格力电器股份有限公司 | Defrosting control method and device and refrigerating unit |
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| JPH05322264A (en) * | 1992-05-21 | 1993-12-07 | Fujitsu General Ltd | Controlling method for defrosting in air conditioner |
| JP2010071495A (en) * | 2008-09-17 | 2010-04-02 | Hitachi Appliances Inc | Air conditioner |
| CN105588267B (en) * | 2015-05-29 | 2018-07-24 | 青岛海信日立空调系统有限公司 | A kind of defrosting control method and device that heat pump system frosting degree detects automatically |
| JP2017036879A (en) * | 2015-08-10 | 2017-02-16 | 株式会社富士通ゼネラル | Outdoor unit for air conditioner |
| CN106979642A (en) * | 2017-05-17 | 2017-07-25 | 广东美的制冷设备有限公司 | The control method of air-conditioner outdoor unit, air conditioner and air conditioner |
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