Control method and control device for air conditioner, air conditioner

Abstract

The application relates to the technical field of household appliances, and discloses a control method for an air conditioner, the air conditioner comprising: an air conditioner body comprising an air supply system for supplying air to a room; an air supply pipeline comprising an air inlet communicated with the air supply system and an air outlet communicated with the room; a gas flow rate sensor for acquiring an end wind speed V0 of the air supply pipeline; the control method comprising: controlling the air fan to supply air; acquiring the end wind speed V0 of the air supply pipeline; and controlling the rotating speed of the air fan according to preset conditions; wherein the preset conditions comprise the end wind speed V0. In this way, when the air conditioner is turned on, the air supply system can supply air to the room through the air supply pipeline. In this way, the air supply system can supply air more accurately, the energy-saving capability and the comfort of the air conditioner are further improved, and the use experience of a user is improved. Meanwhile, the application further discloses a control device for the air conditioner and the air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, for example to a control method and control device for an air conditioner, and an air conditioner. BACKGROUND

[0002] With the development of society, people's living standards gradually improve, and central air conditioners gradually enter ordinary families. The central air conditioner is generally a duct type. The duct type central air conditioner is installed in the ceiling, and is connected to the indoor through the air supply pipe to supply air to the indoor. However, the air supply pipe of the central air conditioner is generally more, and is generally installed in the wall. This results in that the air supply pipe of the central air conditioner is generally long. Therefore, when the traditional central air conditioner controls the fan by using the grading control, it cannot track the change of the end requirement in real time, the energy saving ability is limited, and the comfort is poor.

[0003] In the related art, to solve the above problem, the existing central air conditioner also sets a wind pressure sensor in the air supply pipe, and controls the fan speed according to the air supply pressure. In this way, the central air conditioner can judge the air volume required by the central air conditioning body according to the air pressure in the air supply pipe, and to a certain extent, the energy saving ability and the comfort are improved.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] In the related art, the existing central air conditioner that controls the fan speed by the air pressure in the air supply pipe generally obtains the static pressure value in the air supply pipe through the static pressure sensor, and controls the fan speed according to the static pressure value. Since the static pressure value cannot accurately reflect the change of the air volume, the existing central air conditioner cannot accurately control the wind speed, which leads to poor user experience.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] To have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important components or to delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a control method and control device for an air conditioner, and an air conditioner, which can detect the air flow rate at the end of the air supply pipe, and control the air supply wind speed of the air supply system according to the air flow rate at the end of the air supply pipe. In this way, the air supply system wind speed can be more accurately controlled, the energy saving ability and the comfort of the air conditioner are further improved, and the user experience is improved.

[0009] The embodiment of the present disclosure provides a control method for an air conditioner, the air conditioner comprising: an air conditioner body comprising an air supply system for supplying air to an indoor space; an air supply pipeline comprising an air inlet communicated with the air supply system and an air outlet communicated with the indoor space; a gas flow rate sensor for acquiring an end wind speed V0 of the air supply pipeline; the control method comprising: controlling the air fan to supply air; acquiring the end wind speed V0 of the air supply pipeline; controlling the rotation speed of the air fan according to a preset condition; wherein the preset condition comprises the end wind speed V0.

[0010] In some embodiments, the acquiring of the end wind speed V0 of the air supply pipeline comprises: periodically acquiring the end wind speed V0 of the air supply pipeline; and the control method further comprises: calculating a wind speed difference AV between a first end wind speed V1 of a current period and a second end wind speed V2 of a previous period after the periodic acquisition of the end wind speed V0 of the air supply pipeline; and wherein the preset condition further comprises the wind speed difference AV.

[0011] In some embodiments, the air conditioner further comprises: a first temperature sensor for acquiring an ambient temperature Tn; and a second temperature sensor for acquiring an air supply temperature T0; and the control method further comprises: acquiring the ambient temperature Tn and the air supply temperature T0 after the acquisition of the end wind speed V0 of the air supply pipeline; calculating an Archimedes number Ar according to the end wind speed V0, the ambient temperature Tn and the air supply temperature T0; and calculating an axial temperature difference ATx at a jet point X according to the Archimedes number Ar; and wherein the preset condition further comprises the axial temperature difference ATx.

[0012] The embodiment of the present disclosure further provides a control device for an air conditioner, comprising a processor and a memory storing program instructions, the processor being configured to execute the control method for the air conditioner described above when running the program instructions.

[0013] The embodiment of the present disclosure further provides an air conditioner, comprising: an air conditioner body, an air supply pipeline, a gas flow rate sensor and the control device for the air conditioner described above; the air conditioner body comprising an air supply system for supplying air to an indoor space; the air supply pipeline comprising an air inlet communicated with the air supply system and an air outlet communicated with the indoor space; the gas flow rate sensor being arranged on the air supply pipeline and being configured to acquire a wind speed at a corresponding position of the air supply pipeline; and wherein at least one gas flow rate sensor is arranged on a side of the air supply pipeline close to the air outlet to acquire an end wind speed V0 of the air supply pipeline.

[0014] In some embodiments, the air conditioner further comprises: a first temperature sensor and a second temperature sensor; the first temperature sensor being arranged on an end surface of the air supply pipeline facing the indoor space and being configured to acquire an ambient temperature Tn of the indoor space; and the second temperature sensor being arranged on a side of the air supply pipeline close to the air outlet and being configured to acquire an air supply temperature T0.

[0015] In some embodiments, the air supply pipeline comprises a plurality of air supply pipe sections, and each of the plurality of air supply pipe sections is provided with at least one gas flow rate sensor; and the control device is electrically connected to the plurality of gas flow rate sensors to obtain the air speed at the corresponding positions of the plurality of air supply pipe sections.

[0016] In some embodiments, the air supply pipeline is detachably connected to the air conditioner body, and the plurality of air supply pipe sections are detachably connected.

[0017] In some embodiments, the air supply pipeline is clamped to the air conditioner body, and the plurality of air supply pipe sections are clamped.

[0018] In some embodiments, the air supply pipeline is clamped to the air conditioner body, and the plurality of air supply pipe sections are clamped.

[0019] The control method and control device for the air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] The control method for the air conditioner provided by the embodiments of the present disclosure comprises: controlling the air supply system to supply air; obtaining the end air speed V0 of the air supply pipeline; and controlling the rotation speed of the air fan according to a preset condition, wherein the preset condition comprises the end air speed V0. In this way, when the air conditioner is turned on, the air supply system can supply air to the indoor environment through the air supply pipeline. At this time, the gas flow rate sensor can obtain the end air speed V0 of the position close to the air outlet of the air supply pipeline in real time, and control the rotation speed of the air fan in real time according to the end air speed V0, so as to adjust the air speed of the air outlet of the air supply pipeline. In this way, the air speed of the air supply system can be more accurately controlled, the energy-saving capability and comfort of the air conditioner are further improved, and the user experience is improved.

[0021] The foregoing general description and the following description are only exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are exemplarily illustrated by the corresponding drawings, which are not intended to limit the embodiments, and the elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute a proportional limit, and wherein:

[0023] Figure 1is a structural schematic diagram of an air conditioner provided by an embodiment of the present disclosure;

[0024] Figure 2 is a structural schematic diagram of an air conditioner provided by an embodiment of the present disclosure;

[0025] Figure 3 is a structural schematic diagram of an air conditioner provided by an embodiment of the present disclosure;

[0026] Figure 4 is a structural schematic diagram of an air conditioner provided by an embodiment of the present disclosure;

[0027] Figure 5 is a structural schematic diagram of an air conditioner provided by an embodiment of the present disclosure;

[0028] Figure 6 is a structural schematic diagram of an air conditioner provided by an embodiment of the present disclosure;

[0029] Figure 7 is a schematic diagram of a control method for an air conditioner provided by an embodiment of the present disclosure;

[0030] Figure 8 is a schematic diagram of a control method for an air conditioner provided by an embodiment of the present disclosure;

[0031] Figure 9 is a schematic diagram of a control method for an air conditioner provided by an embodiment of the present disclosure;

[0032] Figure 10 is a schematic diagram of a control device for an air conditioner provided by an embodiment of the present disclosure.

[0033] Reference signs:

[0034] 11: cabinet; 12: fan;

[0035] 20: air supply pipeline; 21: first air supply pipe section; 22: second air supply pipe section; 23: air supply port; 24: air door assembly;

[0036] 31: gas flow rate sensor; 32: air density sensor; 33: first temperature sensor; 34: second temperature sensor;

[0037] 40: warning device; 401: processor; 402: memory; 403: bus; 404: communication interface. DETAILED DESCRIPTION

[0038] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below, and the accompanying drawings are used for reference only and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0039] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0040] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0041] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0042] Unless otherwise specified, the term "a plurality of" means two or more.

[0043] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B represents: A or B.

[0044] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B, which means: A or B, or, A and B, the three relationships.

[0045] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0046] In the prior art, the air supply system of the central air conditioner is mainly controlled by grading or variable speed of the fan. The fan grading control cannot track the change of the end load demand in real time, so its energy saving ability is limited, and the comfort is poor. The controlled parameter of the fan variable speed control is the supply air static pressure at present, that is, the air static pressure of the corresponding position is obtained through the static pressure sensor arranged in the air supply pipeline, and the system overall demand air volume is judged according to the air static pressure.

[0047] However, the static pressure value and the air volume are not a simple prior relationship, but also related to the motor power and the fan efficiency. Therefore, selecting the supply air static pressure as the controlled parameter of the fan variable speed cannot achieve accurate control of the air speed and constant air volume control, which leads to poor user experience.

[0048] As shown in Figures 1 to 10 The present disclosure provides a control method and a control device for an air conditioner, and an air conditioner, which can detect the air flow rate at the end of the air supply pipeline and control the air supply speed of the air supply system according to the air flow rate at the end of the air supply pipeline. In this way, the air speed of the air supply system can be more accurately controlled, the energy saving ability and the comfort of the air conditioner are further improved, and the user experience is improved.

[0049] As shown in Figures 1 to 6 The present disclosure provides an air conditioner, which comprises: an air conditioner body, an air supply pipeline 20, a gas flow rate sensor 31 and a control device. The air conditioner body comprises an air supply system for supplying air to the indoor; the air supply pipeline 20 comprises an air inlet communicated with the air supply system and an air outlet communicated with the indoor; the gas flow rate sensor 31 is arranged in the air supply pipeline 20, and the gas flow rate sensor 31 is used to obtain the air flow rate at the corresponding position of the air supply pipeline 20; the control device is electrically connected with the air supply system and the gas flow rate sensor 31 respectively, and the control device can control the air supply speed of the air supply system according to the air flow rate at the corresponding position of the air supply pipeline 20; wherein, at least one gas flow rate sensor 31 is arranged on the side of the air supply pipeline 20 close to the air outlet.

[0050] Specifically, the aforementioned air conditioner is a central air conditioning system. The air conditioner body includes a casing 11 and an air supply system, with the air supply system housed within the casing 11. The casing 11 has openings and mounting structures corresponding to the air supply system. The first end of the air supply duct 20 is mounted to the mounting structure of the casing 11, and the air inlet at the first end of the air supply duct 20 is connected to the air supply system through the opening. The second end of the air supply duct 20 extends into the room, and the portion of the air supply duct 20 extending into the room has an air outlet, which is connected to the room, allowing the air supply system to supply air to the room through the air supply duct 20. A gas velocity sensor 31 is located on the side of the air supply duct 20 near the air outlet to acquire the gas velocity at the end of the air supply duct 20. A control device can be housed within the casing 11 to control the air supply speed of the air supply system.

[0051] When the air conditioner is on, the air supply system delivers air into the room through the air supply duct 20 to cool or heat the room. At this time, the gas velocity sensor 31 can acquire the actual wind speed at the end of the air supply duct 20 in real time and transmit the actual wind speed to the control device. After acquiring the actual wind speed, the control device can compare the actual wind speed at the end of the duct with the preset wind speed, and control the air supply speed of the air supply system based on the difference between the actual wind speed and the preset wind speed, thereby precisely controlling the wind speed blown into the room.

[0052] For example, if the actual wind speed is greater than the preset wind speed, the control device can control the air supply system to reduce the air supply speed, thereby reducing the actual wind speed blown into the room; or, if the actual wind speed is less than the preset wind speed, the control device can control the air supply system to increase the air supply speed, thereby increasing the actual wind speed blown into the room.

[0053] With this configuration, the air conditioner can control the air supply speed of the air supply system based on the actual wind speed at the end of the air supply duct 20, thereby accurately controlling the actual wind speed blown into the room and improving the user experience.

[0054] In practical applications, users typically choose a constant airflow when environmental conditions remain relatively stable. However, since static pressure cannot accurately reflect changes in airflow, existing air conditioners that use static pressure to control fan speed may experience significant fluctuations in the amount of air blown into the room. The air conditioner provided in this application can maintain a constant airflow by precisely controlling the actual fan speed blown into the room, further improving the user experience.

[0055] like Figures 1 to 3 As shown, in some embodiments, the air supply system includes a fan 12; the control device is used to obtain the rotational speed of the fan 12 and the wind speed at the corresponding position of the air supply duct 20; wherein, when the rotational speed of the fan 12 and the wind speed at the corresponding position of the air supply duct 20 meet preset conditions, the control device determines that the air supply duct 20 is blocked and controls the fan 12 to increase its rotational speed.

[0056] Specifically, the fan 12 is arranged in the casing 11, and an air outlet end of the fan 12 is communicated with an air inlet of the air supply pipeline 20, so that the fan 12 can supply air to the room through the air supply pipeline 20. The control device can control the rotating speed of the fan 12, thereby controlling the air supply speed of the air supply system.

[0057] The control device can obtain the rotating speed of the fan 12 and the air speed in the air supply pipeline 20 through the gas flow rate sensor 31. In the case that the rotating speed of the fan 12 remains unchanged, if the air speed in the air supply pipeline 20 decreases, it means that the resistance in the air supply pipeline 20 increases. At this time, the control device determines that the air supply pipeline 20 is blocked, and controls the fan 12 to increase the rotating speed to increase the air supply speed of the fan 12, thereby increasing the actual air speed blown to the room to ensure the effect of constant air speed.

[0058] In some embodiments, in the case that the rotating speed of the fan 12 and the air speed at the corresponding position of the air supply pipeline 20 satisfy the preset condition, the control device determines that the air supply pipeline 20 is blocked, including: in the case that the rotating speed of the fan 12 remains unchanged, if the control device determines that the air supply pipeline is blocked; wherein p is the initial air density, p' is the actual air density, V is the initial air speed, and V ′ is the actual air speed.

[0059] Specifically, the position corresponding to the gas flow rate sensor 31 in the air supply pipeline 20 is also provided with an air density sensor 32, and the air density sensor 32 is used to obtain the air density at the corresponding position. The control device is electrically connected with the air density sensor 32, so that the air density sensor 32 can transmit the air density information at the corresponding position to the control device. In this way, the accuracy of the air speed control of the air conditioner can be further improved.

[0060] In the case that the rotating speed of the fan 12 remains unchanged, the control device can obtain the actual air speed and the air density through the gas flow rate sensor 31 and the air density sensor 32 respectively, to determine the actual dynamic pressure. If the actual dynamic pressure is less than the initial dynamic pressure, at this time the control device determines that the air supply pipeline 20 is blocked.

[0061] As shown in Figures 1 to 3 some embodiments, the air supply pipeline 20 includes a plurality of air supply pipeline segments, and each of the plurality of air supply pipeline segments is provided with at least one gas flow rate sensor 31; wherein the control device is electrically connected with the plurality of gas flow rate sensors 31 respectively, to obtain the air speed at the corresponding position of the plurality of air supply pipeline segments respectively.

[0062] Specifically, when the overall length of the air supply duct 20 is relatively long, it can be divided into multiple air supply duct segments. Each of these segments is equipped with a gas flow rate sensor 31, and the control device is electrically connected to each of these gas flow rate sensors 31. In this way, the control device can acquire the airflow velocity of each of the multiple air supply duct segments to determine which segment is blocked.

[0063] like Figure 1 and Figure 2 As shown, in some practical applications, the air supply duct 20 includes a first air supply duct section 21 and a second air supply duct section 22, and both air supply duct sections are equipped with gas flow rate sensors 31. In this case, the control device can obtain the actual air speeds of the first air supply duct section 21 and the second air supply duct section 22 respectively. If, with the fan 12 speed remaining constant, the air speeds of both the first and second air supply duct sections 21 decrease, and the decrease in air speed in the second air supply duct section 22 is the same as that in the first air supply duct section 21, then the first air supply duct section 21 is blocked; if the air speed of the first air supply duct section 21 is normal, but the air speed of the second air supply duct section 22 decreases, then the second air supply duct section 22 is blocked; if the air speeds of both the first and second air supply duct sections 21 decrease, and the decrease in air speed in the second air supply duct section 22 is greater than that in the first air supply duct section 21, then both the first and second air supply duct sections 21 are blocked.

[0064] In some embodiments, the air supply duct 20 is detachably connected to the air conditioner body; and multiple air supply duct segments are detachably connected to each other.

[0065] Specifically, the air supply duct 20 is detachably connected to the air conditioner's casing 11. This allows the air supply duct 20 to be removed from the casing 11 if it becomes blocked, making it easier for users to replace or clean it. Similarly, if the air supply duct 20 comprises multiple air supply sections, these sections are detachably connected. This means that if some sections become blocked, the user only needs to disassemble and replace or clean the blocked section.

[0066] Optionally, a sealing structure is provided at the connection between the air supply duct 20 and the housing 11. If the air supply duct 20 comprises multiple air supply duct sections, a sealing structure is also provided at the connection between the multiple air supply duct sections.

[0067] In some embodiments, the air supply duct 20 is snapped into the air conditioner body; multiple air supply duct sections are snapped together.

[0068] Specifically, the casing 11 is provided with a clamping groove at a position corresponding to the air supply pipeline 20, and the air supply pipeline 20 is provided with a clamping protrusion at a position corresponding to the clamping groove, and the clamping protrusion can be clamped in the clamping groove to clamp the air supply pipeline 20 to the casing 11. Similarly, the adjacent air supply pipeline segments are provided with the clamping groove and the clamping protrusion correspondingly, and the user can clamp the clamping protrusion of an air supply pipeline segment in the clamping groove of the corresponding air supply pipeline segment to complete the installation of multiple clamping pipeline segments.

[0069] In actual application, after the air supply pipeline 20 is clamped to the casing 11, the air supply pipeline 20 can also be fastened to the casing 11 by a fastener such as a screw or a bolt.

[0070] As shown in FIG. 1, Figures 1 to 3 In some embodiments, the air conditioner further comprises a warning device. The warning device is electrically connected to the control device, and the control device triggers the warning device to remind the user of the blockage when the control device determines that the air supply pipeline 20 is blocked.

[0071] Specifically, the warning device can be a warning device that emits a sound signal or a light signal. The warning device is arranged on the casing 11 of the air conditioner or the indoor wall. After the control device determines that the air supply pipeline 20 is blocked, the control device can trigger the warning device. At this time, the warning device emits a sound signal or a light signal to remind the user that the air supply pipeline 20 is blocked.

[0072] Optionally, the air conditioner further comprises a display device, and the control device is electrically connected to the display device. In the case where the air supply pipeline 20 comprises multiple air supply pipeline segments, the display device can be used to display the position of the air supply pipeline segment that is blocked.

[0073] As shown in FIG. 1, Figure 3 In some embodiments, at least one gas flow rate sensor 31 is arranged at the air supply port 23 of the air supply pipeline 20; and the air conditioner further comprises a damper assembly 24. The damper assembly 24 is arranged at the air outlet and is used to control the unblocking and blocking of the air outlet; wherein the control device is electrically connected to the damper assembly 24; and in the case where the damper unblocks the air outlet, the control device can control the opening degree of the damper according to the air flow rate at the air supply port 23.

[0074] Specifically, the gas flow rate sensor 31 arranged at the air supply port 23 can obtain the air speed of the air supply port 23. In the case where the actual air speed of the air supply port 23 is greater than the preset air speed, the control device can control the damper assembly 24 to reduce the opening degree to reduce the air volume at the air supply port 23; and in the case where the actual air speed of the air supply port 23 is less than the preset air speed, the control device can control the damper assembly 24 to increase the opening degree to increase the air volume at the air supply port 23. In this way, the control mode of the air conditioner can be enriched.

[0075] As shown in FIG. 1, Figure 3As shown, in some embodiments, the air supply pipeline 20 is provided with a plurality of air supply openings 23, and the plurality of air supply openings 23 are respectively in communication with the indoor space; wherein each of the plurality of air supply openings 23 is provided with at least one gas flow rate sensor 31 and a damper assembly 24.

[0076] Specifically, the air supply pipeline 20 is provided with a plurality of air supply openings 23, and the distance between adjacent two air supply openings 23 is the same. In this way, when the air conditioner is turned on, the air supply system can supply air to the indoor space through the plurality of air supply openings 23, so as to increase the uniformity of the airflow flowing into the indoor space, and further improve the user experience. Meanwhile, the control device can also control the opening degree of the corresponding damper assembly 24 according to the air speed at the plurality of air supply openings 23, respectively.

[0077] It can be understood that, in the case that the air supply pipeline 20 is long and provided with a plurality of air supply openings 23, the air supply amount of the plurality of air supply openings 23 may be different due to the different distances between the plurality of air supply openings 23 and the air supply system. The air conditioner provided by the present application can control the air supply amount of the plurality of air supply openings 23, respectively, so as to ensure that the air supply amount of each air supply opening 23 is the same, and further improve the uniformity of the airflow flowing into the indoor space.

[0078] In some embodiments, the air supply opening 23 is provided with a filter screen structure.

[0079] Specifically, the filter screen structure is detachably installed at the air supply opening 23, and is used for filtering the air flowing into the indoor space.

[0080] In actual application, the control device can determine whether the air supply opening 23 is blocked according to the air speed at the air supply opening 23. If the air supply opening 23 is blocked, the control device can trigger the warning device to remind the user to replace the filter screen structure at the air supply opening 23.

[0081] As shown in Figure 5 and Figure 6 In some embodiments, the air conditioner further comprises a first temperature sensor 33 and a second temperature sensor 34. The first temperature sensor 33 is arranged at the end surface of the air supply pipeline facing the indoor space, and is used for acquiring the indoor ambient temperature Tn; the second temperature sensor 34 is arranged at the side of the air supply pipeline close to the air outlet, and is used for acquiring the air supply temperature T0.

[0082] Specifically, the first temperature sensor 33 is arranged at the end surface of the air supply pipeline facing the indoor space, so as to acquire the indoor temperature. The second temperature sensor 34 is arranged at the end of the air supply pipeline, so as to acquire the air supply temperature. In this way, the end air speed of the fan can be adjusted according to the indoor temperature and the air supply temperature.

[0083] As shown in Figure 7 The present disclosure further provides a control method for an air conditioner, which comprises:

[0084] S101, the control device controls the air blower to blow air.

[0085] S102, the control device controls the gas flow rate sensor to obtain the end air speed V0 of the air blowing pipeline.

[0086] S103, the control device controls the rotation speed of the air blower according to the preset adjustment.

[0087] The preset adjustment includes the end air speed V0, that is, the control device can control the rotation speed of the air blower according to the end air speed V0.

[0088] In this way, the control device can control the rotation speed of the air blower according to the actual end air speed V0 of the end of the air blowing pipeline 20, and further accurately control the actual air speed blown into the room, thereby improving the user experience.

[0089] As shown in Figure 8 The embodiment of the present disclosure further provides another control method for an air conditioner, which comprises the following steps:

[0090] S201, the control device controls the air blower to blow air.

[0091] S202, the control device controls the gas flow rate sensor to periodically obtain the end air speed V0 of the air blowing pipeline.

[0092] S203, the control device calculates the air speed difference AV of the first end air speed V1 of the current period and the second end air speed V2 of the previous period.

[0093] S204, the control device controls the air blower to blow air.

[0094] The preset adjustment further includes the air speed difference AV, that is, the control device controls the rotation speed of the air blower according to the air speed difference AV.

[0095] For example, in the case that the first end air speed V1 of the current period is greater than the second end air speed V2 of the previous period, that is, the air speed difference AV>0, the control device can control the air blowing system to reduce the air blowing speed, and further reduce the actual air speed blown into the room; or in the case that the first end air speed V1 of the current period is less than the second end air speed V2 of the previous period, that is, the air speed difference AV<0, the control device can control the air blowing system to increase the air blowing speed, and further increase the actual air speed blown into the room. In this way, a constant air blowing speed can be achieved, thereby improving the user experience.

[0096] As shown in Figure 9 The embodiment of the present disclosure further provides another control method for an air conditioner, which comprises the following steps:

[0097] S301, the control device controls the air blower to blow air.

[0098] S302, the control device controls the gas flow rate sensor to obtain the terminal air speed V0 of the air supply pipeline.

[0099] S303, the control device controls the first temperature sensor to obtain the ambient temperature Tn, and controls the second temperature sensor to obtain the air supply temperature T0.

[0100] S304, the control device calculates the Archimedes number Ar according to the terminal air speed V0, the ambient temperature Tn and the air supply temperature T0.

[0101] S305, the control device calculates the core temperature difference △Tx at the jet point X according to the Archimedes number Ar.

[0102] S306, the control device controls the air supply of the fan.

[0103] The preset adjustment further includes the core temperature difference △Tx, that is, the control device controls the fan speed according to the core temperature difference △Tx.

[0104] It can be understood that the Archimedes number Ar of the air conditioner is a parameter representing the dimensionless ratio of buoyancy and inertial force, which is mainly used to analyze the behavior characteristics of non-isothermal jet flow in the air conditioning system. The Archimedes number has important significance in the study of non-isothermal jet flow, especially in the air flow organization and thermal comfort evaluation of the air conditioning system.

[0105] Specifically, the calculation of the Archimedes number Ar includes: the control device calculates Wherein, g is the acceleration of gravity, Tn is the ambient temperature, and d0 is the diameter of the air supply port.

[0106] After calculating the Archimedes number Ar, it further includes: the control device calculates the jet length Wherein, x is the jet length. The position corresponding to the jet length x is the jet point X.

[0107] According to the Archimedes number Ar, the calculation of the core temperature difference △Tx at the jet point X includes: the control device calculates Wherein, B is the room width, H is the room height, N is the number of air supply ports, and a is the air supply port turbulence coefficient.

[0108] In the above embodiment, the core temperature difference △Tx refers to the value of the allowable fluctuation of the ambient temperature at the jet point X, which is generally less than or equal to 1℃. When the core temperature difference △Tx is greater than 1, the control device adjusts the speed of the fan to adjust the terminal air speed V0 of the air supply pipeline, and further adjusts the ambient temperature at the jet point X and the core temperature difference △Tx. In this way, the comfort of the air conditioner can be further improved.

[0109] For example, Figure 5 And Figure 6As shown, the air supply pipeline is arranged horizontally, and the air supply port is arranged on a vertical end surface of the air supply pipeline facing the indoor space. After calculating the jet length x, the control device further calculates wherein a is an included angle between the air supply direction of the air supply pipeline and the horizontal. In this way, the distance of the jet at the jet point X from the horizontal axis can be checked.

[0110] In the case that the jet at the jet point X deviates from the horizontal axis, the control device can control the rotating speed of the fan according to the distance of the jet at the jet point X from the horizontal axis, so as to reduce the distance of the jet at the jet point X from the horizontal axis.

[0111] As shown, Figure 10 The control device for the air conditioner according to the embodiments of the present disclosure further includes a processor 401 and a memory 402. Optionally, the device can further include a communication interface 404 and a bus 403. The processor 401, the communication interface 404 and the memory 402 can communicate with each other through the bus 403. The communication interface 404 can be used for information transmission. The processor 401 can invoke the logical instructions in the memory 402 to execute the control method for the air conditioner according to the above embodiments.

[0112] In addition, the logical instructions in the memory 402 described above can be implemented in the form of a software functional unit and sold or used as an independent product, which can be stored in a computer readable storage medium.

[0113] The memory 402 as a computer readable storage medium can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method according to the embodiments of the present disclosure. The processor 401 executes the function application and data processing by running the program instructions / modules stored in the memory 402, that is, implements the control method for the air conditioner according to the above embodiments.

[0114] The memory 402 can include a program storage area and a data storage area. The program storage area can store an operating system and at least one application required by a function; the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 402 can include a high-speed random access memory 402, and can also include a non-volatile memory 402.

[0115] The embodiments of the present disclosure further provide a computer readable storage medium, which stores program instructions. The above program instructions, when executed, cause a computer to execute the control method for the air conditioner described above.

[0116] The technical solutions of the embodiments of the present disclosure can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes one or more instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0117] The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments represent only the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A control method for an air conditioner, characterized by, The air conditioner comprises: an air conditioner body comprising an air supply system for supplying air to an indoor space; an air supply pipeline comprising an air inlet communicated with the air supply system and an air outlet communicated with the indoor space; a gas flow rate sensor for acquiring an end wind speed V0 of the air supply pipeline; a first temperature sensor for acquiring an ambient temperature Tn; and a second temperature sensor for acquiring a supply air temperature T0; The control method comprises: controlling the air supply of the air fan; acquiring the end wind speed V0 of the air supply pipeline; acquiring the ambient temperature Tn and the supply air temperature T0; calculating an Archimedes number Ar according to the end wind speed V0, the ambient temperature Tn and the supply air temperature T0; calculating an axial core temperature difference △Tx at a jet point X according to the Archimedes number Ar; controlling the air fan speed according to a preset condition; wherein the preset condition comprises the end wind speed V0 and the axial core temperature difference △Tx.

2. The control method according to claim 1, characterized by, The acquisition of the end wind speed V0 of the air supply pipeline comprises: periodically acquiring the end wind speed V0 of the air supply pipeline; The control method further comprises, after periodically acquiring the end wind speed V0 of the air supply pipeline: calculating a wind speed difference △V between a first end wind speed V1 of a current period and a second end wind speed V2 of a previous period; wherein the preset condition further comprises the wind speed difference △V.

3. A control device for an air conditioner comprising a processor and a memory having stored program instructions, characterized in that, The processor is configured to execute the control method for the air conditioner as claimed in any one of claims 1 to 2 when running the program instructions.

4. An air conditioner characterized by comprising: Comprise: an air conditioner body comprising an air supply system for supplying air to an indoor space; an air supply pipeline comprising an air inlet communicated with the air supply system and an air outlet communicated with the indoor space; a gas flow rate sensor arranged on the air supply pipeline, the gas flow rate sensor being configured to acquire the wind speed at a corresponding position of the air supply pipeline; and The control device for the air conditioner as claimed in claim 3; wherein at least one gas flow rate sensor is arranged on a side of the air supply pipeline close to the air outlet to acquire the end wind speed V0 of the air supply pipeline.

5. The air conditioner of claim 4, wherein Further comprise: a first temperature sensor arranged on an end surface of the air supply pipeline facing the indoor space, the first temperature sensor being configured to acquire the ambient temperature Tn of the indoor space; and a second temperature sensor arranged on a side of the air supply pipeline close to the air outlet, the second temperature sensor being configured to acquire the supply air temperature T0.

6. The air conditioner of claim 4, wherein the air supply pipeline comprises a plurality of air supply pipe sections, and each of the plurality of air supply pipe sections is provided with at least one gas flow rate sensor; wherein the control device is electrically connected to the plurality of gas flow rate sensors to acquire the wind speed at the corresponding positions of the plurality of air supply pipe sections, respectively.

7. The air conditioner of claim 6, wherein the air supply pipeline is detachably connected to the air conditioner body; and the plurality of air supply pipe sections are detachably connected.

8. The air conditioner of claim 7, wherein the air supply pipeline is clamped to the air conditioner body; and / or the plurality of air supply pipe sections are clamped. At least one gas flow rate sensor is arranged at the air supply opening of the air supply pipeline; the air conditioner further comprises:

9. The air conditioner according to any one of claims 4 to 8, characterized by a damper assembly arranged at the air outlet, the damper assembly being configured to control the opening and blocking of the air outlet; wherein the control device is electrically connected to the damper assembly; in the case that the damper opens the air outlet, the control device can control the opening degree of the damper according to the air flow rate at the air supply opening. ​

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