Refrigerator and compressor control method thereof

Abstract

The application provides a refrigerator and a compressor control method thereof, the compressor control method comprising: acquiring an operating parameter of the compressor; judging whether the compressor is in a low-speed high-load mode according to the operating parameter of the compressor; if the compressor is in the low-speed high-load mode, acquiring a set rotating speed of the compressor; judging whether the set rotating speed is greater than a first rotating speed; if the result of the judgment is yes, controlling the compressor to operate at the set rotating speed. The application has the advantage that the actual rotating speed of the compressor is reasonably adjusted, so that the working noise of the compressor is reduced, the operating loss of the compressor is reduced, and the service life of the compressor is prolonged.

Description

Technical Field

[0001] This invention relates to the field of refrigeration and freezing equipment, and in particular to a refrigerator and a method for controlling its compressor. Background Technology

[0002] As a core component of a refrigerator, the reliability of its safe operation directly affects the overall performance of the refrigerator. Therefore, to ensure the stable and safe operation of the compressor, its operating status needs to be monitored and protected in real time.

[0003] In existing refrigerators, when a lot of food is stored in the storage compartment, the compressor is under a heavy load. If the main control board sets a low speed, the compressor will be in a low-speed, high-load mode for a long time. In this mode, the compressor is noisy and wears out, which greatly shortens the compressor's lifespan. Therefore, this issue needs to be improved. Summary of the Invention

[0004] One objective of the first aspect of this invention is to provide a compressor control method for a refrigerator, which can reduce the operating noise of the compressor, reduce the operating losses of the compressor, and extend the service life of the compressor.

[0005] A further objective of the first aspect of the present invention is to provide speed-up protection for the compressor when it begins to enter a low-speed, high-load mode.

[0006] The second aspect of the present invention is to provide a refrigerator.

[0007] In particular, according to a first aspect of the present invention, the present invention provides a compressor control method for a refrigerator, comprising:

[0008] Obtain the compressor's operating parameters;

[0009] Determine whether the compressor is in low-speed, high-load mode based on its operating parameters;

[0010] If the compressor is in low-speed, high-load mode, obtain the compressor's set speed;

[0011] Determine if the set speed is greater than the first speed;

[0012] If the judgment result is yes, control the compressor to run at the set speed.

[0013] Optionally, the operating parameters include the compressor's actual speed and actual power. The steps for determining whether the compressor is in a low-speed, high-load mode based on these operating parameters include:

[0014] Determine whether the actual speed of the compressor is less than the first speed and whether the actual power of the compressor is greater than the first power;

[0015] If the judgment result is yes, then the compressor is determined to be in low-speed, high-load mode.

[0016] Optionally, the first rotational speed is 1400 r / min to 1600 r / min;

[0017] The first power is 50W to 60W.

[0018] Optionally, after determining whether the set speed is greater than the first speed, the method further includes:

[0019] If the set speed is less than or equal to the first speed, determine whether the actual power of the compressor is less than the second power, where the second power is less than the first power;

[0020] If the judgment result is yes, control the compressor to run at the set speed;

[0021] If the judgment result is negative, control the compressor to run at the first speed.

[0022] Optionally, the difference between the first power and the second power is greater than or equal to 5W.

[0023] Optionally, after determining whether the compressor is in a low-speed, high-load mode based on the compressor's operating parameters, the method further includes:

[0024] If the compressor is not in low-speed high-load mode, determine whether the actual speed and the set speed of the compressor are both less than the second speed, wherein the second speed is less than the first speed;

[0025] If the judgment result is yes, obtain the actual power of the compressor;

[0026] Determine whether the compressor's actual power is greater than the first power;

[0027] If the judgment result is yes, control the compressor to run at the first speed.

[0028] Optionally, the difference between the first speed and the second speed is greater than or equal to 50 r / min.

[0029] Optionally, after determining whether the actual power of the compressor is greater than the first power, the method further includes:

[0030] If the actual power of the compressor is less than or equal to the first power, control the compressor to run at the set speed.

[0031] Optionally, after determining whether both the actual speed and the set speed of the compressor are less than the second speed, the method further includes:

[0032] If the compressor's set speed and / or actual speed is greater than the second speed, control the compressor to run at the set speed.

[0033] According to a second aspect of the present invention, a refrigerator is provided, comprising:

[0034] Compressor; and

[0035] The controller includes a memory and a processor, wherein the memory stores a machine-executable program, which, when executed by the processor, is used for any of the control methods described above.

[0036] The refrigerator compressor control method of the present invention first acquires the compressor's operating parameters, then determines whether the compressor is in a low-speed, high-load mode based on the operating parameters, and if the compressor is in a low-speed, high-load mode, acquires the compressor's set speed, then determines whether the set speed is greater than a first speed. If the set speed is greater than the first speed, the compressor is controlled to operate at the set speed. Since the compressor suffers from high noise and severe wear in the low-speed, high-load mode, controlling the compressor to operate at the set speed when the set speed is greater than the first speed can remove the compressor from the low-speed, high-load mode, thereby reducing compressor operating noise, extending compressor lifespan, and effectively protecting the compressor.

[0037] Furthermore, in the compressor control method of the refrigerator of the present invention, when the compressor is not in low-speed high-load mode, it is determined whether both the actual speed and the set speed of the compressor are less than a second speed. If the determination result is yes, it is then determined whether the actual power of the compressor is greater than a first power. If the actual power is greater than the first power, the compressor is controlled to run at the first speed. That is, when the compressor is not in low-speed high-load mode, the actual speed and actual power of the compressor are monitored so that when the compressor meets the operating conditions of low-speed high-load mode, the compressor is controlled to run at the first speed, thereby timely protecting the compressor from low-speed acceleration.

[0038] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0040] Figure 1 This is a schematic diagram of a refrigerator compressor control method according to an embodiment of the present invention;

[0041] Figure 2 This is a flowchart of a refrigerator compressor control method according to an embodiment of the present invention;

[0042] Figure 3 This is a structural block diagram of a refrigerator according to an embodiment of the present invention. Detailed Implementation

[0043] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0044] This invention first provides a method for controlling the compressor 100 of a refrigerator 10. Figure 1 This is a schematic diagram of a compressor 100 control method for a refrigerator 10 according to an embodiment of the present invention, with reference to... Figure 1 The compressor 100 control method includes at least the following steps S102 to S110.

[0045] Step S102: Obtain the operating parameters of compressor 100.

[0046] Step S104: Determine whether the compressor 100 is in low-speed, high-load mode based on the operating parameters of the compressor 100.

[0047] Step S106: If the compressor 100 is in low-speed high-load mode, obtain the set speed of the compressor 100.

[0048] Step S108: Determine whether the set speed is greater than the first speed.

[0049] Step S110: If the judgment result is yes, control the compressor 100 to run at the set speed.

[0050] The compressor 100 control method of the refrigerator 10 of this invention first acquires the operating parameters of the compressor 100, then determines whether the compressor 100 is in a low-speed, high-load mode based on the operating parameters. If the compressor 100 is in a low-speed, high-load mode, the set speed of the compressor 100 is acquired, and then it is determined whether the set speed is greater than a first speed. If the set speed is greater than the first speed, the compressor 100 is controlled to operate at the set speed. Since the compressor 100 experiences high noise and severe wear in the low-speed, high-load mode, controlling the compressor 100 to operate at the set speed when the set speed is greater than the first speed can remove the compressor 100 from the low-speed, high-load mode, thereby reducing the operating noise of the compressor 100, extending its service life, and effectively protecting the compressor 100.

[0051] The operating parameters of compressor 100 include the actual speed and actual power of compressor 100. The steps to determine whether compressor 100 is in low-speed, high-load mode based on its operating parameters can be as follows: determine whether the actual speed of compressor 100 is less than a first speed and whether the actual power of compressor 100 is greater than a first power. When the actual speed of compressor 100 is less than the first speed and the actual power is less than the first power, it can be determined that compressor 100 is in low-speed, high-load mode, that is, compressor 100 is operating in low-speed, high-load mode.

[0052] In this embodiment, the first rotational speed can be 1400 r / min to 1600 r / min, for example, 1500 r / min, and the first power can be 50 W to 60 W, for example, 60 W. For a household refrigerator 10, the actual rotational speed of the compressor 100 is typically around 1300 r / min to 1400 r / min, and the actual power is typically around 30 W to 40 W. Therefore, by controlling the first rotational speed and the first power within the above ranges, this embodiment can effectively determine whether the compressor 100 is in a low-speed, high-load mode.

[0053] Furthermore, after determining whether the set speed is greater than the first speed, if the set speed is less than or equal to the first speed, it can be further determined whether the actual power of the compressor 100 is less than the second power, where the second power is less than the first power. If the determination result is yes, the compressor 100 can be controlled to operate at the set speed; if the determination result is no, the compressor 100 can be controlled to operate at the first speed. That is, when the actual power of the compressor 100 is less than the second power, the set speed is relatively low, and the compressor 100 can be controlled to operate at the set speed. When the actual power of the compressor 100 is between the first and second power, the first speed is relatively high, and the compressor 100 can be controlled to operate at the first speed. Thus, by controlling the actual speed of the compressor 100 according to its actual power, the compressor 100 can be ensured to operate well, avoiding problems such as a small engine pulling a large load.

[0054] In this embodiment, the difference between the first power and the second power can be greater than or equal to 5W. If the difference between the first power and the second power is small, the compressor 100 may use the set speed as the actual speed at times and the first speed as the actual speed at other times. The compressor 100 is prone to damage due to frequent changes in the actual speed.

[0055] After determining whether the compressor 100 is in a low-speed, high-load mode based on its operating parameters, if the compressor 100 is not in this mode, it can be further determined whether both the actual speed and the set speed of the compressor 100 are less than a second speed, where the second speed is less than the first speed. If the determination result is yes, the actual power of the compressor 100 is obtained, and then it is determined whether the actual power of the compressor 100 is greater than the first power. If the actual power is greater than the first power, the compressor 100 can be controlled to operate at the first speed. That is, when the compressor 100 is not in a low-speed, high-load mode, the actual speed and actual power of the compressor 100 are monitored so that when the operating conditions of the compressor 100 meet the low-speed, high-load mode, the compressor 100 can be controlled to operate at the first speed, thereby providing low-speed acceleration protection for the compressor 100.

[0056] In this embodiment, the difference between the first speed and the second speed can be greater than or equal to 50 r / min. The difference between the first speed and the second speed should be large enough to prevent the compressor 100 from frequently switching between low-speed high-load mode and non-low-speed high-load mode, thus avoiding malfunctions in the operation of the compressor 100.

[0057] Furthermore, after determining whether the actual power of the compressor 100 is greater than the first power, if the actual power of the compressor 100 is less than or equal to the first power, the compressor 100 can be controlled to operate at the set speed. That is, when both the actual speed and actual power of the compressor 100 are relatively low, it is only necessary to control the compressor 100 to operate at the normal set speed.

[0058] After determining whether both the actual speed and the set speed of the compressor 100 are less than the second speed, if the set speed and / or the actual speed of the compressor 100 are greater than the second speed, the compressor 100 is controlled to operate at the set speed. That is, if the compressor 100 is already operating at high speed and / or is about to operate at high speed, then it is only necessary to control the compressor 100 to operate at the normal set speed.

[0059] Figure 2 This is a flowchart of a compressor 100 control method for a refrigerator 10 according to an embodiment of the present invention, with reference to... Figure 2 The compressor 100 control method includes at least the following steps S202 to S222.

[0060] Step S202: Obtain the operating parameters of the compressor 100; the operating parameters may include the actual speed and actual power of the compressor 100.

[0061] Step S204: Determine whether the compressor 100 is in low-speed, high-load mode based on the operating parameters of the compressor 100. If yes, proceed to step S206; otherwise, proceed to step S216.

[0062] In this step, if the actual speed of compressor 100 is less than the first speed and the actual power is greater than the first power, then it is indicated that compressor 100 is currently in a low-speed, high-load mode. The first speed can be 1500 r / min and the first power can be 60 W.

[0063] Step S206: Obtain the set speed of compressor 100.

[0064] Step S208: Determine whether the set speed is greater than the first speed. If yes, proceed to step S210; otherwise, proceed to step S212.

[0065] Step S210: Control the compressor 100 to run at the set speed.

[0066] Step S212: Determine whether the actual power of compressor 100 is less than the second power. If yes, proceed to step S210; otherwise, proceed to step S214.

[0067] In this step, the second power is less than the first power; for example, the second power can be 55W.

[0068] Step S214: Control the compressor 100 to run at the first speed.

[0069] Step S216: Determine whether the actual speed and the set speed of the compressor 100 are both less than the second speed. If yes, proceed to step S218; otherwise, proceed to step S222.

[0070] In this step, the second rotational speed is less than the first rotational speed; for example, the second rotational speed can be 1450 rpm.

[0071] Step S218: Determine whether the actual power of compressor 100 is greater than the first power. If yes, proceed to step S220; otherwise, proceed to step S222.

[0072] Step S220: Control the compressor 100 to run at the first speed.

[0073] Step S222: Control the compressor 100 to run at the set speed.

[0074] The present invention also provides a refrigerator 10, Figure 3 This is a structural block diagram of a refrigerator 10 according to an embodiment of the present invention, with reference to... Figure 3 The refrigerator 10 may include a compressor 100 and a controller 200. The controller 200 is signal-connected to the compressor 100 and is used to control the start-stop state and actual speed of the compressor 100. The controller 200 may further be signal-connected to the main control device of the refrigerator 10 and is used to provide the operating status of the compressor 100 to the main control device and receive control commands from the main control device.

[0075] Specifically, the controller 200 includes at least a memory 220 and a processor 210. The memory 220 stores a machine-executable program 221, which is executed by the processor 210 to implement the compressor 100 control method of the refrigerator 10 in this embodiment.

[0076] According to any one or a combination of the above optional embodiments, the embodiments of the present invention can achieve the following beneficial effects:

[0077] The compressor 100 control method of the refrigerator 10 of the present invention first acquires the operating parameters of the compressor 100, then determines whether the compressor 100 is in a low-speed, high-load mode based on the operating parameters, and when the compressor 100 is in the low-speed, high-load mode, acquires the set speed of the compressor 100, and then determines whether the set speed is greater than a first speed. If the set speed is greater than the first speed, the compressor 100 is controlled to operate at the set speed. Since the compressor 100 has problems of high noise and severe wear and tear in the low-speed, high-load mode, when the set speed of the compressor 100 is greater than the first speed, controlling the compressor 100 to operate at the set speed can remove the compressor 100 from the low-speed, high-load mode, thereby reducing the operating noise of the compressor 100, extending the service life of the compressor 100, and effectively protecting the compressor 100.

[0078] Furthermore, in the compressor 100 control method of the refrigerator 10 of the present invention, when the compressor 100 is not in a low-speed high-load mode, it is determined whether both the actual speed and the set speed of the compressor 100 are less than a second speed. If the determination result is yes, it is then determined whether the actual power of the compressor 100 is greater than a first power. If the actual power is greater than the first power, the compressor 100 is controlled to operate at the first speed. That is, when the compressor 100 is not in a low-speed high-load mode, the actual speed and actual power of the compressor 100 are monitored so that when the compressor 100 meets the operating conditions of the low-speed high-load mode, the compressor 100 is controlled to operate at the first speed, thereby timely protecting the compressor 100 from low-speed acceleration.

[0079] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. A method for controlling the compressor of a refrigerator, comprising: Obtain the operating parameters of the compressor; Determine whether the compressor is in a low-speed, high-load mode based on its operating parameters; If the compressor is in the low-speed, high-load mode, obtain the set speed of the compressor; Determine whether the set rotational speed is greater than the first rotational speed; If the judgment result is yes, control the compressor to run at the set speed.

2. The compressor control method according to claim 1, wherein, The operating parameters include the actual speed and actual power of the compressor. The steps for determining whether the compressor is in a low-speed, high-load mode based on the operating parameters include: Determine whether the actual speed of the compressor is less than the first speed and whether the actual power of the compressor is greater than the first power; If the judgment result is yes, then the compressor is determined to be in the low-speed high-load mode.

3. The compressor control method according to claim 2, wherein, The first rotational speed is 1400 r / min to 1600 r / min; The first power is 50W to 60W.

4. The compressor control method according to claim 2, wherein, After determining whether the set rotational speed is greater than the first rotational speed, the method further includes: If the set speed is less than or equal to the first speed, determine whether the actual power of the compressor is less than the second power, wherein the second power is less than the first power; If the determination result is yes, control the compressor to run at the set speed; If the judgment result is negative, control the compressor to run at the first speed.

5. The compressor control method according to claim 4, wherein, The difference between the first power and the second power is greater than or equal to 5W.

6. The compressor control method according to claim 2, wherein, After determining whether the compressor is in a low-speed, high-load mode based on its operating parameters, the method further includes: If the compressor is not in low-speed high-load mode, determine whether the actual speed and the set speed of the compressor are both less than the second speed, wherein the second speed is less than the first speed; If the determination result is yes, obtain the actual power of the compressor; Determine whether the actual power of the compressor is greater than the first power; If the determination result is yes, control the compressor to run at the first speed.

7. The compressor control method according to claim 6, wherein, The difference between the first rotational speed and the second rotational speed is greater than or equal to 50 r / min.

8. The compressor control method according to claim 6, wherein, After determining whether the actual power of the compressor is greater than the first power, the method further includes: If the actual power of the compressor is less than or equal to the first power, the compressor is controlled to operate at the set speed.

9. The compressor control method according to claim 6, wherein, After determining whether both the actual speed and the set speed of the compressor are less than the second speed, the method further includes: If the set speed and / or actual speed of the compressor is greater than the second speed, the compressor is controlled to operate at the set speed.

10. A refrigerator, comprising: compressor; as well as A controller, comprising a memory and a processor, wherein the memory stores a machine-executable program, which, when executed by the processor, is used to implement the compressor control method of any one of claims 1-9.

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