Air conditioner indoor unit, air conditioner and control method thereof

Abstract

The application provides an air conditioner indoor unit, an air conditioner and a control method thereof, and relates to the technical field of air conditioners. The air conditioner indoor unit comprises: a shell provided with a containing space, the containing space being provided with an air inlet and an air outlet; a fan and an air duct, the air inlet end of the air duct being provided with the fan, the air outlet end of the air duct being in communication with the air outlet; a distance sensor arranged at the air inlet end of the air duct and used for detecting the distance between the fan and the air inlet end of the air duct; and an indoor heat exchanger, the indoor heat exchanger being provided with an electric heater, the electric heater being electrically connected with the distance sensor. The air conditioner indoor unit provided by the application sets the distance sensor at the air inlet end of the air duct, detects the distance between the fan and the air inlet end of the air duct by using the distance sensor, and electrically connects the distance sensor with the electric heater, so as to control the electric heater according to the detection result of the distance sensor, and avoid the abnormal sound caused by the deformation of the air duct when the temperature of the electric heater is relatively high and the air duct is deformed, thereby improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and in particular to an indoor air conditioner unit, an air conditioner, and a control method thereof. Background Technology

[0002] Air conditioners are now essential appliances for homes and offices, especially during the summer and winter seasons when they are used for extended periods. Air conditioners can cool in summer and heat in winter, regulating indoor temperature to provide a comfortable environment for users.

[0003] When an air conditioner is in heating mode, it often uses electric heating to assist in heating in order to achieve a better heating effect. This can raise the temperature of the indoor heat exchanger to about 60 degrees Celsius. At this temperature, the air duct is very prone to deformation, which can change the distance between the air duct and the fan, or even touch the fan, causing abnormal noise between the air duct and the fan, thus affecting the user experience. Summary of the Invention

[0004] This invention provides an indoor air conditioning unit, an air conditioner, and a control method thereof to solve the problem of abnormal noise between the air duct and the fan caused by heat deformation of the air duct, which affects the user experience.

[0005] This invention provides an indoor air conditioning unit, comprising:

[0006] The casing has a receiving space, and the receiving space has an air inlet and an air outlet;

[0007] A fan is disposed within the accommodating space;

[0008] An air duct is provided in the accommodating space, the air inlet end of the air duct is equipped with the fan, and the air outlet end of the air duct is connected to the air outlet.

[0009] A distance sensor is installed at the air inlet end of the air duct to detect the distance between the fan and the air inlet end of the air duct.

[0010] An indoor heat exchanger is disposed in the accommodating space. An electric heater is provided on the indoor heat exchanger. The electric heater is electrically connected to the distance sensor to control the electric heater according to the detection result of the distance sensor.

[0011] According to an embodiment of the present invention, the air inlet end of the air duct is divided into multiple detection areas, each detection area is provided with at least one distance sensor, each distance sensor is used to measure the distance between the corresponding detection area and the fan, and each distance sensor is electrically connected to the electric heater.

[0012] According to an embodiment of the present invention, an indoor air conditioning unit is provided with a first detection area and a second detection area at the air inlet end of the air duct; the first detection area is located on a first side of the fan, and the second detection area is located on a second side opposite to the first side of the fan;

[0013] The distance sensor includes a first distance sensor and a second distance sensor; the first distance sensor is disposed in the first detection area and is used to detect the distance between the first side of the fan and the first detection area; the second distance sensor is disposed in the second detection area and is used to detect the distance between the second side of the fan and the second detection area.

[0014] An air conditioner indoor unit according to an embodiment of the present invention further includes:

[0015] A fixing device is connected to the side of the air duct away from the fan. The side of the fixing device connected to the air duct is provided with a mounting position corresponding to the distance sensor. The distance sensor is set at the mounting position, and the detection end of the distance sensor passes through the air duct and is located between the fan and the air inlet end of the air duct.

[0016] An air conditioning indoor unit according to an embodiment of the present invention includes an air duct comprising:

[0017] A vortex housing and a vortex tongue are connected to each other. The vortex housing extends along one side of the fan, and the vortex tongue forms a flow channel on the vortex housing for the fan to blow air. The distance sensor is disposed on the vortex housing or the vortex tongue.

[0018] This invention also provides an air conditioner, including an outdoor unit and an indoor unit; the outdoor unit is connected to the indoor unit via a refrigerant pipeline.

[0019] This invention also provides a method for controlling an air conditioner, comprising:

[0020] Obtain the real-time distance between the fan and the air intake end of the duct;

[0021] Adjust the electric heater according to the real-time distance and the preset distance.

[0022] According to an embodiment of the present invention, the control method for an air conditioner includes the step of adjusting the electric heater based on a real-time distance and a preset distance, comprising:

[0023] Compare real-time distance with preset distance;

[0024] If the real-time distance is less than the preset distance, the electric heater will be turned off.

[0025] If the real-time distance is greater than or equal to the preset distance, the electric heater is controlled to maintain its current state and continue operating.

[0026] According to an embodiment of the present invention, in the control method of an air conditioner, if the air inlet end of the air duct is divided into multiple detection areas, and each detection area is provided with at least one distance sensor, then the step of adjusting the electric heater according to the real-time distance and the preset distance includes:

[0027] Compare the preset distance with the real-time distance between the fan and each of the detection areas;

[0028] If any of the real-time distances is less than a preset distance, the electric heater is turned off.

[0029] If all real-time distances are greater than or equal to the preset distance, the electric heater is controlled to maintain its current state and continue operating.

[0030] According to an embodiment of the present invention, a control method for an air conditioner is provided, wherein the air inlet end of the air duct is provided with a first detection area and a second detection area; the first detection area is located on a first side of the fan, and the second detection area is located on a second side opposite to the first side of the fan; then the step of adjusting the electric heater according to the real-time distance and the preset distance includes:

[0031] Compare the preset distance with the first real-time distance between the fan and the first detection area, and compare the preset distance with the second real-time distance between the fan and the second detection area;

[0032] If the first real-time distance or the second real-time distance is less than the preset distance, the electric heater is turned off.

[0033] If both the first real-time distance and the second real-time distance are greater than or equal to the preset distance, then the electric heater is controlled to maintain its current state and continue operating.

[0034] The air conditioner indoor unit, air conditioner and control method provided by the present invention, by setting a distance sensor at the air inlet end of the air duct, using the distance sensor to detect the distance between the fan and the air inlet end of the air duct, and electrically connecting the distance sensor and the electric heater, so as to control the electric heater according to the detection result of the distance sensor, so that when the temperature of the electric heater is high and causes the air duct to deform, the abnormal noise caused by the deformation of the air duct can be avoided by controlling the electric heater, thereby improving the user experience. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the internal structure of an air conditioner indoor unit according to an embodiment of the present invention;

[0037] Figure 2 This is a three-dimensional structural diagram of an air conditioner indoor unit provided in an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of an installation distance sensor for an indoor air conditioning unit according to an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of the internal structure of an air conditioner indoor unit according to another embodiment of the present invention;

[0040] Figure 5 This is a flowchart illustrating a control method for an air conditioner according to an embodiment of the present invention;

[0041] Figure 6 This is a flowchart illustrating a control method for an air conditioner according to another embodiment of the present invention;

[0042] Figure 7 This is a flowchart illustrating a control method for an air conditioner according to another embodiment of the present invention;

[0043] Figure 8 This is a schematic diagram of the control system of an air conditioner provided in an embodiment of the present invention;

[0044] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention;

[0045] Reference numerals: 1. Housing; 2. Fan; 3. Air duct; 31. Vortex housing; 32. Vortex tongue; 4. Distance sensor; 41. First distance sensor; 42. Second distance sensor; 5. Indoor heat exchanger; 6. Fixing device; 810. Acquisition module; 820. Adjustment module; 910. Processor; 920. Communication interface; 930. Memory; 940. Communication bus. Detailed Implementation

[0046] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0047] In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0050] This invention provides an indoor unit for an air conditioner, such as... Figures 1 to 3 As shown, the indoor unit of the air conditioner includes: a casing 1, a fan 2, an air duct 3, a distance sensor 4, and an indoor heat exchanger 5.

[0051] The housing 1 is the outer casing of the indoor unit of the air conditioner. The housing 1 has a receiving space with an air inlet and an air outlet. The number and position of the air inlet and outlet can be adjusted as needed. The fan 2 can be a cross-flow fan, and the fan 2 and the air duct 3 are located within the receiving space. The fan 2 is located at the air inlet end of the air duct 3, and the air outlet end of the air duct 3 is connected to the air outlet. During the rotation of the fan 2, outside air enters the receiving space through the air inlet, then passes through the fan 2 into the air inlet end of the air duct 3, and finally exits through the air outlet of the receiving space via the air outlet end of the air duct 3.

[0052] Distance sensor 4 is installed at the air inlet end of air duct 3. Distance sensor 4 is used to detect the distance between the fan 2 and the air inlet end of air duct 3, which is the vertical distance between the fan 2 and the air inlet end of air duct 3. Indoor heat exchanger 5 is installed in the accommodating space. When the air conditioner is heating, indoor heat exchanger 5 can act as a condenser; when the air conditioner is cooling, indoor heat exchanger 5 can act as an evaporator. Indoor heat exchanger 5 is equipped with an electric heater for heating during the air conditioner's heating process. The electric heater is electrically connected to distance sensor 4 to control the electric heater based on the detection result of distance sensor 4.

[0053] To achieve better heating performance, the indoor unit of this air conditioner uses an electric heater to heat the indoor heat exchanger 5. During the heating process, the distance sensor 4 acquires the real-time distance between the fan and the air inlet of the duct. Based on the real-time distance and a preset distance, the operating state of the electric heater is adjusted. Specifically, after acquiring the real-time distance, it is compared with the preset distance. If the real-time distance is less than the preset distance, it indicates that the deformation of the duct 3 is large, and the air blown by the fan 2 is likely to produce abnormal noise between the duct 3 and the fan 2. In this case, the electric heater is turned off or its power is reduced to reduce the deformation of the duct 3 due to heat. If the real-time distance is greater than or equal to the preset distance, it indicates that the deformation of the duct 3 is still small, and the air blown by the fan 2 will not cause abnormal noise. In this case, the electric heater is controlled to maintain its current operating state.

[0054] For example, if the preset distance is 3.0mm and the real-time distance is found to be 5.5mm, since the real-time distance is greater than the preset distance, the deformation of the air duct 3 is still small, and the air blown by the fan 2 will not cause abnormal noise. At this time, the electric heater is controlled to maintain its current state. If the real-time distance is found to be 2.9mm, since the real-time distance is less than the preset distance, the deformation of the air duct 3 is large, and the air blown by the fan 2 is very likely to cause abnormal noise between the air duct 3 and the fan 2. At this time, the electric heater is controlled to be turned off or its power is reduced to reduce the deformation of the air duct 3 due to heat.

[0055] The air conditioner indoor unit provided in this embodiment of the invention uses a distance sensor installed at the air inlet end of the air duct to detect the distance between the fan and the air inlet end of the air duct. The distance sensor is electrically connected to an electric heater to control the electric heater based on the detection result of the distance sensor. This allows the electric heater to be controlled to avoid abnormal noise caused by air duct deformation when the electric heater temperature is high. This improves the user experience.

[0056] In this embodiment, as Figures 1 to 3As shown, the air duct 3 includes an interconnected vortex housing 31 and a vortex tongue 32. The vortex housing 31 extends along one side of the fan 2, and the vortex tongue 32 forms a flow channel on the vortex housing 31 for the fan 2 to blow air. The distance sensor 4 can be selected to be installed on the vortex housing 31 or the vortex tongue 32 according to the actual situation.

[0057] Based on the above embodiments, such as Figures 1 to 3 As shown, the air inlet of the air duct 3 is divided into multiple detection areas. Since there are multiple detection areas (easily deformable areas) in the air duct 3, in order to avoid any abnormal noise from any of the detection areas, each detection area is equipped with at least one distance sensor 4. Each distance sensor 4 is used to measure the distance between the corresponding detection area and the fan 2, and each distance sensor 4 is electrically connected to the electric heater.

[0058] In this embodiment, during the heating of the heat exchanger 5 in the indoor chamber by the electric heater, each distance sensor 4 acquires the real-time distance between the fan 2 and the corresponding detection area. Based on multiple real-time distances and a preset distance, the operating state of the electric heater is adjusted. Specifically, the preset distance is compared with the real-time distance between the fan 2 and each detection area. If any real-time distance is less than the preset distance, it indicates that the deformation of the air duct 3 is large, and the air blown by the fan 2 is very likely to cause abnormal noise between the detection area and the fan 2. At this time, the electric heater is controlled to be turned off or its power is reduced to reduce the deformation of the air duct 3 due to heat. If all real-time distances are greater than or equal to the preset distance, it indicates that the current deformation of the air duct 3 is still small, and the air blown by the fan 2 will not cause abnormal noise. In this case, the electric heater is controlled to maintain its current operating state.

[0059] It should be noted that since the distance between fan 2 and each detection area is different, completely different preset distances can be set for different detection areas. The corresponding preset distances can be compared with the real-time distances to meet the actual installation requirements.

[0060] In one specific embodiment, such as Figure 4 As shown, the air inlet of the air duct 3 is provided with a first detection area and a second detection area. The first detection area is located on the first side of the fan 2, and the second detection area is located on the second side opposite to the first side of the fan 2. Two distance sensors 4 are provided, namely a first distance sensor 41 and a second distance sensor 42. The first distance sensor 41 is located in the first detection area and is used to detect the distance between the first side of the fan 2 and the first detection area. The second distance sensor 42 is located in the second detection area and is used to detect the distance between the second side of the fan 2 and the second detection area.

[0061] In this embodiment, the first detection area is set on the vortex housing 31, and the second detection area is set on the vortex tongue 32. That is, the first distance sensor 41 is set on the vortex housing 31 to measure the distance between the vortex housing 31 and the fan 2, and the second distance sensor 42 is set on the vortex tongue 32 to measure the distance between the vortex tongue 32 and the fan 2.

[0062] In this embodiment, during the heating of the heat exchanger 5 in the indoor chamber by the electric heater, the first distance sensor 41 detects the first real-time distance between the fan 2 and the first detection area, which is the distance between the volute 31 and the fan 2. The second distance sensor 42 detects the second real-time distance between the fan 2 and the second detection area, which is the distance between the volute tongue 32 and the fan 2. After obtaining the first and second real-time distances, a preset distance is compared with the first real-time distance between the fan 2 and the first detection area, and the preset distance is compared with the second real-time distance between the fan 2 and the second detection area. If the first or second real-time distance is less than the preset distance, it indicates that the deformation of the air duct 3 is large, and the air blown by the fan 2 is very likely to cause abnormal noise between the air duct 3 and the fan 2. At this time, the electric heater is controlled to be turned off or the power of the electric heater is reduced to reduce the deformation of the volute 31 and the volute tongue 32. If the first and second real-time distances are both greater than or equal to the preset distance, it indicates that the deformation of the air duct 3 is still small, and the air blown by the fan 2 will not cause abnormal noise on the volute 31 and the volute tongue 32. The electric heater is then controlled to maintain its current state of operation.

[0063] In one embodiment, such as Figures 1 to 3 As shown, the indoor unit of the air conditioner also includes a fixing device 6. To prevent the fixing device 6 from generating abnormal noise at the air duct 3, the fixing device 6 is connected to the side of the air duct 3 away from the fan 2. The side of the fixing device 6 connected to the air duct 3 is provided with a corresponding mounting position for the distance sensor 4. The distance sensor 4 is set at the mounting position, that is, the fixing device 6 is set on the outside of the air duct 3, the detection end of the distance sensor 4 passes through the air duct 3, and the detection end of the distance sensor 4 is set between the fan 2 and the air inlet end of the air duct 3.

[0064] In this embodiment, the fixing device 6 is detachably connected to the side of the air duct 3 away from the fan 2 by two screws, so that the air delivered by the fan 2 will not directly contact the fixing device 6, and the detection end of the distance sensor 4 is only placed between the fan 2 and the air inlet end of the air duct 3 to avoid the airflow passing through the distance sensor 4 and generating noise.

[0065] This invention also provides an air conditioner, which can be a wall-mounted air conditioner, a floor-standing air conditioner, or a ceiling-mounted air conditioner, etc. The air conditioner includes an outdoor unit and an indoor unit; the outdoor unit is connected to the indoor unit via refrigerant piping. Figures 1 to 3As shown, the indoor unit of the air conditioner includes: a casing 1, a fan 2, an air duct 3, a distance sensor 4, and an indoor heat exchanger 5.

[0066] The housing 1 is the outer shell of the indoor unit of the air conditioner. The housing 1 has a receiving space with an air inlet and an air outlet. The number and position of the air inlet and outlet can be adjusted as needed. The fan 2 can be a cross-flow fan. The fan 2 and the air duct 3 are located within the receiving space. The fan 2 is located at the air inlet end of the air duct 3, and the air outlet end of the air duct 3 is connected to the air outlet. During the rotation of the fan 2, outside air enters the receiving space through the air inlet, then passes through the fan 2 into the air inlet end of the air duct 3, and finally exits through the air outlet end of the receiving space. A distance sensor 4 is located at the air inlet end of the air duct 3. The distance sensor 4 is used to detect the distance between the fan 2 and the air inlet end of the air duct 3; this distance is the vertical distance between the fan 2 and the air inlet end of the air duct 3. The indoor heat exchanger 5 is installed in the accommodating space. When the air conditioner is heating, the indoor heat exchanger 5 can be used as a condenser. When the air conditioner is cooling, the indoor heat exchanger 5 can be used as an evaporator. The indoor heat exchanger 5 is equipped with an electric heater, which is used to heat the indoor heat exchanger 5 during the heating process of the air conditioner. The electric heater is electrically connected to the distance sensor 4 to control the electric heater according to the detection result of the distance sensor 4.

[0067] The air conditioner provided in this embodiment of the invention includes the aforementioned indoor unit. By setting a distance sensor at the air inlet end of the air duct, the distance sensor detects the distance between the fan and the air inlet end of the air duct. The distance sensor is electrically connected to an electric heater, and the electric heater is controlled according to the detection result of the distance sensor. This allows the electric heater to be controlled to avoid abnormal noise caused by the deformation of the air duct when the temperature of the electric heater is high. This improves the user experience.

[0068] To address the aforementioned problems, this invention provides a control method for an air conditioner, which can be referred to in the above description. Figures 1 to 4 Related embodiments are not described in detail here. Figure 5 As shown, the control method of this air conditioner includes the following steps:

[0069] Step S510: Obtain the real-time distance between the air inlet end of the fan and the air duct.

[0070] During the heating process of the air conditioner, the indoor heat exchanger 5 acts as a condenser, and the electric heater heats the indoor heat exchanger 5. During the heating process of the electric heater, the distance sensor 4 obtains the real-time distance between the fan and the air inlet of the air duct.

[0071] Step S520: Adjust the electric heater according to the real-time distance and the preset distance.

[0072] After obtaining the real-time distance, compare it with the preset distance. If the real-time distance is less than the preset distance, it indicates that the deformation of the air duct 3 is large, and the air blown by fan 2 is very likely to cause abnormal noise between the air duct 3 and fan 2. At this time, control to turn off the electric heater or reduce the power of the electric heater to reduce the deformation of the air duct 3 due to heat. If the real-time distance is greater than or equal to the preset distance, it indicates that the current deformation of the air duct 3 is still small, and the air blown by fan 2 will not cause abnormal noise. At this time, control the electric heater to maintain its current state of operation.

[0073] For example, if the preset distance is 3.0mm and the real-time distance is found to be 5.5mm, since the real-time distance is greater than the preset distance, the deformation of the air duct 3 is still small, and the air blown by the fan 2 will not cause abnormal noise. At this time, the electric heater is controlled to maintain its current state. If the real-time distance is found to be 2.9mm, since the real-time distance is less than the preset distance, the deformation of the air duct 3 is large, and the air blown by the fan 2 is very likely to cause abnormal noise between the air duct 3 and the fan 2. At this time, the electric heater is controlled to be turned off or its power is reduced to reduce the deformation of the air duct 3 due to heat.

[0074] The air conditioner control method provided in this embodiment of the invention uses a distance sensor installed at the air inlet end of the air duct to detect the distance between the fan and the air inlet end of the air duct. The distance sensor is electrically connected to an electric heater, and the electric heater is controlled according to the detection result of the distance sensor. This allows the electric heater to be controlled to avoid abnormal noise caused by the deformation of the air duct when the temperature of the electric heater is high. This improves the user experience.

[0075] If the air inlet of the air duct 3 is divided into multiple detection zones, and each detection zone is equipped with at least one distance sensor 4, then... Figure 6 As shown, step S520: adjusting the electric heater according to the real-time distance and the preset distance includes:

[0076] Step S610: Compare the preset distance with the real-time distance between the fan and each detection area.

[0077] During the heating process of the electric heater in the heat exchanger 5 inside the chamber, each distance sensor 4 acquires the real-time distance between the fan 2 and the corresponding detection area. Based on multiple real-time distances and a preset distance, the operating state of the electric heater is adjusted. The preset distance is compared with the real-time distance between the fan 2 and each detection area.

[0078] Step S620: If any of the real-time distances is less than the preset distance, then control the electric heater to be turned off.

[0079] If any of the real-time distances is less than the preset distance, it indicates that the deformation of the air duct 3 is large, and the air blown out by the fan 2 is very likely to make abnormal noise between the detection area and the fan 2. At this time, the electric heater is turned off or the power of the electric heater is reduced to reduce the deformation of the air duct 3 due to heat.

[0080] Step S630: If all real-time distances are greater than or equal to the preset distance, control the electric heater to maintain the current state and continue working.

[0081] If all real-time distances are greater than or equal to the preset distance, it means that the deformation of the current air duct 3 is still small, and the air blown out by the fan 2 will not cause abnormal noise. Then, the electric heater is controlled to maintain the current state and continue to work.

[0082] The air inlet of the air duct 3 is provided with a first detection area and a second detection area; the first detection area is located on the first side of the fan 2, and the second detection area is located on the second side opposite to the first side of the fan 2. Figure 7 As shown, step S520: adjusting the electric heater according to the real-time distance and the preset distance includes:

[0083] Step S710: Compare the preset distance with the first real-time distance between the fan and the first detection area, and compare the preset distance with the second real-time distance between the fan and the second detection area.

[0084] During the heating process of the electric heater in the heat exchanger 5 inside the chamber, the first distance sensor 41 detects the first real-time distance between the fan 2 and the first detection area, which is the distance between the volute 31 and the fan 2. The second distance sensor 42 detects the second real-time distance between the fan 2 and the second detection area, which is the distance between the volute tongue 32 and the fan 2. A preset distance is compared with the first real-time distance between the fan 2 and the first detection area, and then the preset distance is compared with the second real-time distance between the fan 2 and the second detection area.

[0085] Step S720: If the first real-time distance or the second real-time distance is less than the preset distance, then control the electric heater to be turned off.

[0086] If the first real-time distance or the second real-time distance is less than the preset distance, it indicates that the deformation of the air duct 3 is large. The air blown out by the fan 2 is very likely to make abnormal noise between the air duct 3 and the fan 2. At this time, the electric heater is turned off or the power of the electric heater is reduced to reduce the deformation of the vortex shell 31 and the vortex tongue 32.

[0087] Step S730: If both the first real-time distance and the second real-time distance are greater than or equal to the preset distance, then control the electric heater to maintain the current state and continue working.

[0088] If both the first real-time distance and the second real-time distance are greater than or equal to the preset distance, it indicates that the deformation of the current air duct 3 is still small, and the air blown out by the fan 2 will not cause abnormal noise on the vortex shell 31 and the vortex tongue 32. Then, the electric heater is controlled to maintain its current state and continue to work.

[0089] The control system of the air conditioner provided in the embodiments of the present invention is described below. The control system of the air conditioner described below can be referred to in correspondence with the control method described above.

[0090] like Figure 8 As shown, the control system of the air conditioner includes: an acquisition module 810 and an adjustment module 820.

[0091] The acquisition module 810 is used to acquire the real-time distance between the air inlet end of the fan and the air duct. The adjustment module 820 is used to adjust the electric heater according to the real-time distance and the preset distance.

[0092] Figure 9 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 9 As shown, the electronic device may include a processor 910, a communication interface 920, a memory 930, and a communication bus 940. The processor 910, communication interface 920, and memory 930 communicate with each other via the communication bus 940. The processor 910 can call logic instructions from the memory 930 to execute the air conditioner. This control method includes: acquiring the real-time distance between the fan and the air inlet of the duct; and adjusting the electric heater based on the real-time distance and a preset distance.

[0093] It should be noted that the electronic device in this embodiment can be a server, a PC, or other devices, as long as its structure includes the following: Figure 9 The processor 910, communication interface 920, memory 930, and communication bus 940 shown are interconnected via the communication bus 940. The processor 910 can call logical instructions stored in the memory 930 to execute the aforementioned method. This embodiment does not limit the specific implementation of the electronic device.

[0094] Furthermore, the logical instructions in the aforementioned memory 930 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0095] Furthermore, this invention discloses a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, and when the program instructions are executed by a computer, the computer can execute the air conditioner provided in the above-described method embodiments. The control method includes: obtaining the real-time distance between the fan and the air inlet end of the air duct; and adjusting the electric heater according to the real-time distance and a preset distance.

[0096] On the other hand, embodiments of the present invention also provide a non-transitory computer-readable storage medium storing a computer program thereon. When the computer program is executed by a processor, it is implemented to perform the air conditioner provided in the above embodiments. The control method includes: obtaining the real-time distance between the fan and the air inlet end of the air duct; and adjusting the electric heater according to the real-time distance and a preset distance.

[0097] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0098] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0100] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The casing has a receiving space, and the receiving space has an air inlet and an air outlet; A fan is disposed within the accommodating space; An air duct is provided in the accommodating space. The air inlet end of the air duct is equipped with the fan, and the air outlet end of the air duct is connected to the air outlet. The air duct includes: a volute and a volute tongue connected to each other. The volute extends along one side of the fan, and the volute tongue forms a flow channel on the volute for the fan to blow air. A distance sensor, disposed on the volute or the volute tongue, is used to detect the distance between the fan and the air inlet end of the air duct; the air inlet end of the air duct is provided with a first detection area and a second detection area, the first detection area being located on a first side of the fan, and the second detection area being located on a second side opposite to the first side of the fan; the distance sensor includes a first distance sensor and a second distance sensor; the first distance sensor is disposed in the first detection area and is used to detect the distance between the first side of the fan and the first detection area; the second distance sensor is disposed in the second detection area and is used to detect the distance between the second side of the fan and the second detection area; An indoor heat exchanger is installed in the accommodating space. An electric heater is mounted on the indoor heat exchanger and electrically connected to the distance sensor. The electric heater is controlled based on the detection result of the distance sensor. The distance sensor acquires the real-time distance between the fan and the air inlet of the duct, and compares the real-time distance with a preset distance. If the real-time distance is less than the preset distance, the electric heater is turned off. If the real-time distance is greater than or equal to the preset distance, the electric heater is kept in its current operating state. A fixing device is connected to the side of the air duct away from the fan. The side of the fixing device connected to the air duct has a mounting position. The distance sensor is set in the mounting position. The detection end of the distance sensor passes through the air duct and is located between the fan and the air inlet end of the air duct.

2. An air conditioner, characterized in that, include: The outdoor unit of the air conditioner and the indoor unit of the air conditioner as described in claim 1; The outdoor unit of the air conditioner is connected to the indoor unit of the air conditioner via a refrigerant pipeline.

3. A control method for an air conditioner as described in claim 2, characterized in that, include: Obtain the real-time distance between the fan and the air intake end of the duct; Adjust the electric heater according to the real-time distance and the preset distance.

4. The control method for an air conditioner according to claim 3, characterized in that, The step of adjusting the electric heater based on the real-time distance and the preset distance includes: Compare real-time distance with preset distance; If the real-time distance is less than the preset distance, the electric heater will be turned off. If the real-time distance is greater than or equal to the preset distance, the electric heater is controlled to maintain its current state and continue operating.

5. The control method for an air conditioner according to claim 3, characterized in that, If the air inlet of the air duct is divided into multiple detection zones, and each detection zone is equipped with at least one distance sensor, then the step of adjusting the electric heater according to the real-time distance and the preset distance includes: Compare the preset distance with the real-time distance between the fan and each of the detection areas; If any of the real-time distances is less than a preset distance, the electric heater is turned off. If all real-time distances are greater than or equal to the preset distance, the electric heater is controlled to maintain its current state and continue operating.

6. The control method for an air conditioner according to claim 3, characterized in that, The air inlet of the air duct is provided with a first detection area and a second detection area; the first detection area is located on a first side of the fan, and the second detection area is located on a second side opposite to the first side of the fan. The step of adjusting the electric heater according to the real-time distance and the preset distance includes: Compare the preset distance with the first real-time distance between the fan and the first detection area, and compare the preset distance with the second real-time distance between the fan and the second detection area; If the first real-time distance or the second real-time distance is less than the preset distance, the electric heater is turned off. If both the first real-time distance and the second real-time distance are greater than or equal to the preset distance, then the electric heater is controlled to maintain its current state and continue operating.

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