A method for controlling an air conditioner

Abstract

The present invention relates to a control method for an air conditioner, the air conditioner comprising a housing arranged indoors and a fan arranged in the housing. The control method for the air conditioner comprises: detecting the dust concentration in the indoor air. When the dust concentration is greater than or equal to a first preset value, the fan is controlled to reverse so that the indoor air enters the housing through an air outlet on the housing. The control method for the air conditioner of the present invention controls the fan to reverse when the dust concentration is greater than or equal to a first preset value, and the indoor air carries the dust and enters the interior of the housing through the air outlet on the housing under the guidance of the fan. In the process of the air flowing through the evaporator, the dust is adsorbed or blocked by the evaporator. After the indoor air passes through the evaporator, it passes through a filter. The dust that is not adsorbed or blocked by the evaporator is blocked by the filter and remains on the side of the filter facing the fan, thereby removing the dust from the indoor air.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a control method of an air conditioner. Background Art

[0002] With the large-scale application of air conditioners, many new functions have been added to meet the personalized needs of users, such as fresh air or indoor air filtration, etc. However, when cleaning the room or when the dust concentration in the room is high, if the dust cannot be effectively removed, it will affect human health. Currently, no air conditioner has tried to remove dust from indoor air. Summary of the invention

[0003] In view of the above problems, the present invention is proposed to provide a method for controlling an air conditioner that overcomes the above problems or at least partially solves the above problems, and can solve the problem of indoor air dust removal, thereby protecting the health of users.

[0004] Specifically, the present invention provides a control method for an air conditioner, the air conditioner comprising a housing arranged indoors and a fan arranged in the housing; a filter is arranged at an air inlet on the housing, and an evaporator is arranged between the filter and the fan; the control method comprises:

[0005] Detect the dust concentration in the indoor air;

[0006] When the dust concentration is greater than or equal to a first preset value, the fan is controlled to reverse so that the indoor air enters the shell through the air outlet on the shell.

[0007] Optionally, the air conditioner control method further includes:

[0008] Detecting whether the amount of dust on the side of the filter facing the fan reaches a second preset value;

[0009] When the dust volume reaches a second preset value, a filter cleaning signal is sent.

[0010] Optionally, the air conditioner control method further includes:

[0011] After the fan stops reversing, the dust on the evaporator is cleaned, and / or the dust on the side of the filter facing the fan is cleaned, and / or the dust on both sides of the filter is cleaned.

[0012] Optionally, cleaning the dust on the evaporator includes:

[0013] The evaporator is cooled to generate condensed water on the evaporator; or, the evaporator is first cooled to generate frost on the evaporator, and then the evaporator is heated to melt the frost on the evaporator;

[0014] Cleaning the dust on the evaporator also includes: closing the air outlet; and causing the fan to rotate forward and / or reverse according to a preset rule.

[0015] Optionally, the control method of the air conditioner further includes: when the dust concentration is greater than or equal to a first preset value, controlling the fan to rotate in the reverse direction while causing the evaporator to cool so as to generate condensed water on the evaporator.

[0016] Optionally, cleaning dust on the side of the filter screen facing the fan, and / or cleaning dust on both sides of the filter screen, comprises:

[0017] The evaporator is made to perform refrigeration, and the cold energy on the evaporator is transferred to the filter, so that the filter produces condensed water; or,

[0018] The evaporator is made to cool, and the cold energy on the evaporator is transferred to the filter to frost the filter, and then the evaporator is made to heat, and the heat on the evaporator is transferred to the filter to melt the frost on the filter.

[0019] Optionally, the filter screen is a metal filter screen, and a water receiving tray is provided at the lower side of the metal filter screen;

[0020] The fan is reversed to transfer cold and heat, and / or the metal filter and the evaporator are thermally connected via a heat conduction device.

[0021] Optionally, the air conditioner further comprises an independent heat exchanger thermally connected to the filter screen, and / or a refrigerant channel is provided in the filter screen;

[0022] Cleaning dust on the side of the filter screen facing the fan, and / or cleaning dust on both sides of the filter screen, including:

[0023] The independent heat exchanger or the refrigerant channel is made to cool, and the cold energy in the independent heat exchanger or the refrigerant channel is transferred to the filter net, so that the filter net generates condensed water; or,

[0024] The independent heat exchanger or the refrigerant channel is cooled, and the cold in the independent heat exchanger or the refrigerant channel is transferred to the filter to frost the filter, and then the evaporator is heated, and the heat in the independent heat exchanger or the refrigerant channel is transferred to the filter to melt the frost on the filter.

[0025] Optionally, when the dust concentration is greater than or equal to a first preset value, and before controlling the fan to reverse, the method further includes:

[0026] Detect whether the amount of dust on the side of the filter away from the fan reaches a third preset value; if yes, clean the dust on the side of the filter away from the fan; or,

[0027] The dust on the side of the filter screen facing away from the fan is directly cleaned.

[0028] Optionally, the air conditioner control method further includes:

[0029] Detect whether the amount of dust on the side of the filter facing away from the fan reaches a fourth preset value; if yes, clean the dust on the side of the filter facing away from the fan.

[0030] The present invention provides a control method for an air conditioner. When the dust concentration is greater than or equal to a first preset value, the fan is controlled to reverse. The indoor air carries the dust and enters the interior of the housing through the air outlet on the housing under the guidance of the fan. In the process of the air flowing through the evaporator, the air velocity close to the inner surface of the evaporator is reduced, so that the dust is adsorbed or blocked by the evaporator, thereby achieving the effect of removing dust from the indoor air. After the indoor air passes through the evaporator, it passes through the filter. The dust that is not adsorbed or blocked by the evaporator is blocked by the filter and remains on the side of the filter facing the fan, thereby further enhancing the effect of removing dust from the air.

[0031] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0033] Figure 1 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention;

[0034] Figure 2 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention;

[0035] Figure 3 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention;

[0036] Figure 4 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, and examples of embodiments of the present invention are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] The present invention provides a control method for an air conditioner. Figure 1 FIG. 1 is a flow chart of a method for controlling an air conditioner according to an embodiment of the present invention. Figure 1 And refer to Figures 2 to 4 The air conditioner of the embodiment of the present invention comprises a housing arranged indoors, the housing has an air inlet and an air outlet, a fan is arranged in the housing, a filter is arranged at the air inlet of the housing, an evaporator is arranged between the filter and the fan, and a dust concentration detection device is also arranged on the housing. The control method of the air conditioner comprises:

[0039] Detect the dust concentration in the indoor air.

[0040] When the dust concentration is greater than or equal to a first preset value, the fan is controlled to rotate in the reverse direction so that the indoor air enters the shell through the air outlet on the shell.

[0041] The dust concentration detection device detects the dust concentration in the indoor air in real time. When the dust concentration is greater than or equal to a first preset value, the fan is controlled to reverse. The indoor air carries the dust and enters the interior of the housing through the air outlet on the housing under the guidance of the fan. In the process of air flowing through the evaporator, the air flow rate close to the inner surface of the evaporator will be reduced, so that the dust will be adsorbed or blocked by the evaporator, thereby achieving the effect of removing dust from the indoor air. After the indoor air passes through the evaporator, it passes through the filter. The dust that is not adsorbed or blocked by the evaporator will be blocked by the filter and remain on the side of the filter facing the fan, thereby further enhancing the effect of removing dust from the air.

[0042] Furthermore, the fan is controlled to rotate in the reverse direction while the evaporator is cooled to generate condensed water on the evaporator. At this time, the surface of the evaporator has moisture, and when dust passes through the inside of the evaporator with the air, it is more likely to be adsorbed or blocked by the evaporator and remain in the evaporator, thereby further enhancing the effect of removing dust in the air.

[0043] In some embodiments of the present invention, Figure 3 As shown, the control method of the air conditioner also includes:

[0044] Before the fan stops rotating in reverse, or after the fan stops rotating in reverse and before rotating forward again, it is detected whether the amount of dust on the side of the filter facing the fan reaches a second preset value.

[0045] When the dust volume reaches a second preset value, a filter cleaning signal is sent out to remind the user to clean the filter manually or automatically after the fan stops reversing.

[0046] Before the fan stops reversing, or after the fan stops reversing and before it rotates forward again, detect whether the amount of dust on the side of the filter facing the fan reaches a second preset value, where the second preset value can be different values ​​according to different filter detection methods. For example, the filter detection method is that the air inlet side of the filter (i.e., the side of the filter facing away from the fan) is provided with an air volume detection device, and when the air volume detected by the air volume detection device is less than the second preset value, it is confirmed that the filter is blocked, and at this time, the second preset value is the preset air volume. Alternatively, the filter detection method is that a light transmission device is provided at the filter, and when the light transmission device detects that the light transmission area of ​​the filter is less than the second preset value, it is confirmed that the filter is blocked, and at this time, the second preset value is the preset light transmission area. When the amount of dust reaches the second preset value, a filter cleaning signal is issued to remind the user to manually clean it after the fan stops reversing, or automatically clean it, so as to prevent the dust from being redirected into the indoor space after the fan rotates forward. The third preset value and the fourth preset value mentioned in the following description are similar to the second preset value.

[0047] In other embodiments of the present invention, Figure 2 As shown, the control method of the air conditioner also includes:

[0048] After the fan stops reversing, the dust on the evaporator is cleaned, and / or the dust on the side of the filter facing the fan is cleaned, and / or the dust on both sides of the filter is cleaned. There is no need to detect the state of the filter. Each time the air conditioner removes dust from the air, the evaporator and / or the side of the filter facing the fan and / or the two sides of the filter are directly cleaned manually or automatically to prevent the dust on the evaporator and / or the dust on the side of the filter facing the fan and / or the dust on the two sides of the filter from being redirected into the indoor space after the fan rotates forward, so as to ensure the air removal effect of the air conditioner next time and the normal operation of the evaporator and the filter when the air conditioner performs normal heat exchange.

[0049] Further, the dust on the evaporator is cleaned including:

[0050] The evaporator is cooled to generate condensed water on the evaporator. A water receiving tray is provided under the evaporator. As the condensed water flows downward, the dust on the surface of the evaporator is also washed down and finally enters the water receiving tray. Alternatively, the evaporator is cooled first to frost the evaporator, and then the evaporator is heated to melt the frost on the evaporator. Condensed water is also generated during the defrosting process. As the condensed water flows downward, the dust on the surface of the evaporator is also washed down and finally enters the water receiving tray.

[0051] Cleaning the dust on the evaporator also includes: closing the air outlet and making the fan rotate forward and / or reverse according to a preset rule. When the fan rotates forward and / or reverse according to a preset rule, the air flow can be accelerated to make the evaporator frost as soon as possible. Closing the air outlet is to prevent the dust in the shell from entering the indoor space when the fan rotates. The preset rule here means that the fan rotates at the minimum speed for 10 minutes and then stops.

[0052] Further, cleaning the dust on the side of the filter facing the fan, and / or cleaning the dust on both sides of the filter, includes:

[0053] The evaporator is cooled, and the cold energy on the evaporator is transferred to the filter, so that condensed water is generated on the filter. Alternatively, the evaporator is cooled, and the cold energy on the evaporator is transferred to the filter, so that the filter is frosted, and then the evaporator is heated, and the heat on the evaporator is transferred to the filter, so that the frost on the filter melts. Of course, the above cleaning method can also be used to clean the dust on the side of the filter away from the fan.

[0054] In some embodiments of the present invention, the air conditioner is equipped with a control protection program to prevent the evaporator and the filter from freezing.

[0055] In some embodiments of the present invention, the filter screen is a metal filter screen, and a water receiving tray is arranged at the lower side of the metal filter screen. The water receiving tray can be a water receiving tray arranged separately at the lower side of the metal filter screen, or a water receiving tray shared with the evaporator. The air conditioner transfers the cooling and heat of the evaporator to the metal filter screen by reversing the fan, and / or the metal filter screen and the evaporator are thermally connected by a heat conducting device, and the heat conducting device here can be a heat pipe.

[0056] In some embodiments of the present invention, the air conditioner further includes an independent heat exchanger thermally connected to the filter, and / or a refrigerant channel is provided in the filter.

[0057] Cleaning the dust on the side of the filter facing the fan, and / or cleaning the dust on both sides of the filter, including:

[0058] The independent heat exchanger or the refrigerant channel is cooled, and the cold energy on the independent heat exchanger or the refrigerant channel is transferred to the filter net, so that the filter net produces condensed water. Or,

[0059] The independent heat exchanger or refrigerant channel is cooled, and the cold in the independent heat exchanger or refrigerant channel is transferred to the filter to frost the filter, and then the evaporator is heated, and the heat in the independent heat exchanger or refrigerant channel is transferred to the filter to melt the frost on the filter. Of course, the above method can also be used to clean the dust on the side of the filter away from the fan.

[0060] In some embodiments of the present invention, Figure 4 As shown, when the dust concentration is greater than or equal to the first preset value, and before controlling the fan to rotate in the reverse direction, the control method of the air conditioner further includes:

[0061] Detect whether the amount of dust on the side of the filter away from the fan reaches a third preset value. If yes, clean the dust on the side of the filter away from the fan. Alternatively, directly clean the dust on the side of the filter away from the fan. This can prevent the dust on the side of the filter away from the fan from being blown into the room when the fan reverses.

[0062] In some embodiments of the present invention, the control method of the air conditioner further includes: detecting whether the amount of dust on the side of the filter away from the fan reaches a fourth preset value, where the fourth preset value is greater than the third preset value. If yes, the dust on the side of the filter away from the fan is cleaned. The filter is detected, and when the amount of dust on the side of the filter away from the fan reaches the fourth preset value, the air conditioner either issues an alarm and the user manually cleans it, or issues an alarm and the user chooses to remotely control the fan to reverse to blow the dust away from the filter, or automatically reverses the fan to clean the dust. The above control method enables the air conditioner to clean the filter in time when it is working normally. It should be noted that when the fan reverses, the control method for cleaning the filter based on the fourth preset value is not executed. If the indoor dust concentration is greater than or equal to the first preset value and the amount of dust on the side of the filter away from the fan also reaches the fourth preset value, only the fan is reversed, and the control method for cleaning the filter based on the fourth preset value is not executed.

[0063] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A control method for an air conditioner, the air conditioner comprising a housing arranged indoors and a fan arranged in the housing; a filter is arranged at an air inlet on the housing, and an evaporator is arranged between the filter and the fan; characterized in that: The control method comprises: Detect the dust concentration in the indoor air; When the dust concentration is greater than or equal to a first preset value, the fan is controlled to rotate in reverse, so that the indoor air enters the housing through the air outlet on the housing; The control method of the air conditioner also includes: After the fan stops reversing, cleaning the dust on the evaporator, and / or cleaning the dust on the side of the filter facing the fan, and / or cleaning the dust on both sides of the filter; When the dust concentration is greater than or equal to a first preset value, and before controlling the fan to reverse, the method further includes: Detect whether the amount of dust on the side of the filter away from the fan reaches a third preset value; if yes, clean the dust on the side of the filter away from the fan; or, The dust on the side of the filter screen facing away from the fan is directly cleaned.

2. The air conditioner control method according to claim 1, characterized in that: The control method of the air conditioner also includes: Detecting whether the amount of dust on the side of the filter facing the fan reaches a second preset value; When the dust amount reaches a second preset value, the filter cleaning signal is sent out.

3. The air conditioner control method according to claim 1, characterized in that: Cleaning the dust on the evaporator includes: The evaporator is cooled to generate condensed water on the evaporator; or, the evaporator is first cooled to generate frost on the evaporator, and then the evaporator is heated to melt the frost on the evaporator; Cleaning the dust on the evaporator also includes: closing the air outlet; and causing the fan to rotate forward and / or reverse according to a preset rule.

4. The air conditioner control method according to claim 1, characterized in that: Also includes: When the dust concentration is greater than or equal to a first preset value, the fan is controlled to rotate in the reverse direction while the evaporator is cooled to generate condensed water on the evaporator.

5. The air conditioner control method according to claim 1, characterized in that: Cleaning dust on the side of the filter screen facing the fan, and / or cleaning dust on both sides of the filter screen, including: The evaporator is made to perform refrigeration, and the cold energy on the evaporator is transferred to the filter, so that the filter produces condensed water; or, The evaporator is made to cool, and the cold energy on the evaporator is transferred to the filter to frost the filter, and then the evaporator is made to heat, and the heat on the evaporator is transferred to the filter to melt the frost on the filter.

6. The air conditioner control method according to claim 5, characterized in that: The filter screen is a metal filter screen, and a water receiving tray is arranged at the lower side of the metal filter screen; The fan is reversed to transfer cold and heat, and / or the metal filter and the evaporator are thermally connected via a heat conduction device.

7. The air conditioner control method according to claim 1, characterized in that: The air conditioner further comprises an independent heat exchanger thermally connected to the filter screen, and / or a refrigerant channel is provided in the filter screen; Cleaning dust on the side of the filter screen facing the fan, and / or cleaning dust on both sides of the filter screen, including: The independent heat exchanger or the refrigerant channel is made to cool, and the cold energy in the independent heat exchanger or the refrigerant channel is transferred to the filter net, so that the filter net generates condensed water; or, The independent heat exchanger or the refrigerant channel is cooled, and the cold in the independent heat exchanger or the refrigerant channel is transferred to the filter to frost the filter, and then the evaporator is heated, and the heat in the independent heat exchanger or the refrigerant channel is transferred to the filter to melt the frost on the filter.

8. The air conditioner control method according to claim 1, characterized in that: Also includes: Detecting whether the amount of dust on the side of the filter facing away from the fan reaches a fourth preset value; Yes, clean the dust on the side of the filter screen facing away from the fan.

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