Operation control method of air conditioner, air conditioner and operation control device

Abstract

The invention discloses an operation control method of an air conditioner, the air conditioner and an operation control device.The air conditioner comprises a heat exchanger and an air guide device, the air guide device is closer to an air inlet of the air conditioner than the heat exchanger, and the heat exchanger comprises a plurality of heat exchange flow paths; a first parameter representing the heat exchange uniformity of the heat exchanger is calculated; the smaller the first parameter is, the better the heat exchange uniformity of the heat exchanger is; and adjusting the air guide device according to the return air temperature to reduce the first parameter. The wind field of the heat exchanger can be adjusted according to the thermal field measurement parameters of the heat exchanger, so that the wind field and thermal field coupling effect of the heat exchanger is better, the heat exchange uniformity of the heat exchanger is improved, and the capacity and energy efficiency of the air conditioner are improved.

Description

Technical Field

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

[0002] The American ducted indoor unit is generally composed of fan module, electric auxiliary heating module, electric control module, evaporator coil and other functional modules. The internal space of the machine is compact and there are many forms of market installation scenarios. The existing evaporator coil forms include A type, M type, N type and other forms. The main water tray and auxiliary water tray are used to realize different installation scenarios. The fan module forms a wind field to realize evaporation or condensation of the heat exchanger and adjust the temperature and humidity of the air.

[0003] The existing American ducted air conditioner has a secondary water tray, so a part of the structure needs to be reserved for installation. As a result, the entire evaporator coil system is not installed in the center of the air duct of the whole machine, which leads to inconsistent air volume passing through each heat exchanger, resulting in uneven heat exchange and poor heat exchange effect. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide an operation control method of an air conditioner, an air conditioner and an operation control device, which can improve the heat exchange uniformity of the heat exchanger and enhance the capacity and energy efficiency of the air conditioner.

[0005] In a first aspect, an embodiment of the present invention provides an operation control method of an air conditioner, wherein the air conditioner comprises a heat exchanger and an air guide device, wherein the air guide device is closer to an air inlet of the air conditioner than the heat exchanger, and the heat exchanger comprises a plurality of heat exchange flow paths, and the method comprises:

[0006] Obtaining the return air temperature of all heat exchange flow paths of the heat exchanger, and calculating a first parameter characterizing the heat exchange uniformity of the heat exchanger; the smaller the first parameter is, the better the heat exchange uniformity of the heat exchanger is;

[0007] The air guiding device is adjusted according to the return air temperature to reduce the first parameter.

[0008] The operation control method of the air conditioner provided according to the embodiment of the present invention has at least the following beneficial effects: a first parameter characterizing the heat exchange uniformity is calculated according to the return air temperature of all heat exchange flow paths of the heat exchanger, wherein the smaller the first parameter is, the better the heat exchange uniformity of the heat exchanger is, that is, when the first parameter is larger, it indicates that the heat exchange uniformity of the heat exchanger is not good in the current state, and then the air guide device can be adjusted according to the return air temperature, that is, the wind field of the heat exchanger is adjusted according to the thermal field measurement parameters of the heat exchanger, so as to make the coupling effect of the wind field and the thermal field of the heat exchanger better, thereby improving the heat exchange uniformity of the heat exchanger and enhancing the capacity and energy efficiency of the air conditioner.

[0009] According to the operation control method provided by some embodiments of the invention, the heat exchanger includes a plurality of single plates, the single plates include a plurality of heat exchange flow paths, and the air guide device is adjusted according to the return air temperature, including:

[0010] When the first parameter is greater than a first preset value, calculating an average return air temperature of each of the single boards;

[0011] The air guiding device is adjusted according to the average return air temperature.

[0012] In this embodiment, a first parameter characterizing heat exchange uniformity is calculated based on the return air temperature of all heat exchange flow paths of the heat exchanger. When the first parameter is greater than a first preset value, that is, the heat exchange uniformity of the heat exchanger is not good in the current state, the average return air temperature of each single board is calculated, so that a single board with a larger or smaller average return air temperature can be determined, and the air guide device is adjusted, that is, the wind field of the heat exchanger is adjusted according to the thermal field measurement parameters of the heat exchanger, so as to make the coupling effect of the wind field and the thermal field of the heat exchanger better, thereby improving the heat exchange uniformity of the heat exchanger and enhancing the capacity and energy efficiency of the air conditioner.

[0013] According to the operation control method provided by some embodiments of the present invention, the adjusting the air guide device according to the average return air temperature includes:

[0014] Determining a single board having the largest average return air temperature from the plurality of single boards;

[0015] The air guide device is adjusted to reduce the air volume flowing through the single board with the largest average return air temperature.

[0016] According to the operation control method provided by some embodiments of the present invention, the adjusting the air guide device according to the average return air temperature includes:

[0017] Determine a single board having the smallest average return air temperature from the plurality of single boards;

[0018] The air guide device is adjusted to increase the air volume flowing through the single board with the smallest average return air temperature.

[0019] According to the operation control method provided by some embodiments of the present invention, the first parameter is the variance or standard deviation of the return air temperature of all heat exchange flow paths of the heat exchanger.

[0020] According to some embodiments of the present invention, the operation control method further includes:

[0021] When a preset trigger condition is met, reacquiring the return air temperature of all heat exchange flow paths of the heat exchanger and calculating the first parameter, and re-determining whether the first parameter is greater than a first preset value;

[0022] The preset trigger condition includes any one of the following:

[0023] After the air guide device is adjusted, timing begins, and the timing duration reaches a first preset duration;

[0024] The timing starts when the first parameter is less than the first preset value, and the timing duration reaches a second preset duration; the second preset duration is greater than the first preset duration;

[0025] The change value of the temperature set by the user is greater than the second preset value;

[0026] The measured change in ambient temperature is greater than a third preset value;

[0027] The measured change in ambient humidity is greater than a fourth preset value.

[0028] In a second aspect, an embodiment of the present invention provides an air conditioner, comprising: a heat exchanger, an air guide device and a controller, wherein the air guide device is used to adjust the air inlet angle of the heat exchanger, and the air guide device is arranged closer to the air inlet of the air conditioner than the heat exchanger; the controller is configured to: control the air guide device to adjust the air inlet angle according to the heat exchange uniformity of the heat exchanger.

[0029] The air conditioner provided according to the embodiment of the present invention has at least the following beneficial effects: the controller controls the air guide device to adjust the air inlet angle according to the heat exchange uniformity of the heat exchanger, that is, adjusts the wind field of the heat exchanger according to the thermal field measurement parameters of the heat exchanger, so as to make the wind field and thermal field of the heat exchanger better coupled, thereby improving the heat exchange uniformity of the heat exchanger and enhancing the capacity and energy efficiency of the air conditioner.

[0030] According to the air conditioner provided by some embodiments of the present invention, the heat exchanger includes a plurality of heat exchange flow paths, and the controller is further configured as follows:

[0031] Before controlling the air guide device to adjust the air inlet angle according to the heat exchange uniformity of the heat exchanger,

[0032] Obtaining the return air temperature of all heat exchange flow paths of the heat exchanger and calculating a first parameter;

[0033] The controlling the air guide device to adjust the air inlet angle according to the heat exchange uniformity of the heat exchanger comprises:

[0034] The air guiding device is adjusted according to the return air temperature to reduce the first parameter; wherein: the smaller the first parameter is, the better the heat exchange uniformity of the heat exchanger is.

[0035] According to the air conditioner provided by some embodiments of the present invention, the air guide device includes a guide plate arranged at the air inlet and a driving motor for driving the guide plate to rotate, and the rotating shaft of the driving motor is directly connected to the guide plate, or is connected to the guide plate through one of a rack, a chain, and a belt.

[0036] According to the air conditioner provided by some embodiments of the present invention, the adjusting of the air guide device includes: controlling the driving device to drive the guide plate to rotate a preset angle.

[0037] According to the air conditioner provided by some embodiments of the present invention, the guide plates include at least two, and the preset angle of rotation of each guide plate is different.

[0038] According to some embodiments of the present invention, the air conditioner is constructed by connecting at least two single plates in sequence and having a cross-section in one of an M-shape, an N-shape, an inverted N-shape or an inverted V-shape.

[0039] In a third aspect, an embodiment of the present invention provides an operation control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the operation control method of the air conditioner as described in the embodiment of the first aspect above.

[0040] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the air conditioner operation control method as described in the embodiment of the first aspect above.

[0041] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0043] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0044] Figure 1 is a side schematic diagram of an indoor unit of an air conditioner provided by an embodiment of the present invention;

[0045] Figure 2(a) is Figure 1 AA section view in;

[0046] Figure 2(b) is an enlarged view of point A in Figure 2(a);

[0047] Figure 3 yes Figure 1 BB section view in;

[0048] Figure 4 is a schematic diagram of a deflector plate of an air conditioner provided in an embodiment of the present invention;

[0049] Figure 5 is a flow chart of an operation control method of an air conditioner provided in Embodiment 1 of the present invention;

[0050] Figure 6 is a flow chart of an air conditioner operation control method provided by Embodiment 2 of the present invention;

[0051] Figure 7 is a flow chart of an air conditioner operation control method provided by Embodiment 3 of the present invention;

[0052] Figure 8 is a flow chart of an air conditioner operation control method provided by a fourth embodiment of the present invention;

[0053] Fig. 9 is a flow chart of an operation control method of an air conditioner provided in Embodiment 5 of the present invention;

[0054] Fig.10 It is a structural schematic diagram of the operation control device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0055] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0056] In the description of the embodiments of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, "above", "below", "within", etc. are understood to include the number itself, "at least one" means one or more, "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. If there is a description of "first", "second", etc., it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0057] It should be noted that the terms such as setting, installing, and connecting in the embodiments of the present invention should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the embodiments of the present invention in combination with the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or mutual communication; it can be directly connected or indirectly connected through an intermediate medium.

[0058] It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0059] The American ducted indoor unit is generally composed of fan module, electric auxiliary heating module, electric control module, evaporator coil and other functional modules. The internal space of the machine is compact and there are many forms of market installation scenarios. The existing evaporator coil forms include A type, M type, N type and other forms. The main water tray and auxiliary water tray are used to realize different installation scenarios. The fan module forms a wind field to realize evaporation or condensation of the heat exchanger and adjust the temperature and humidity of the air.

[0060] The existing American ducted air conditioner has a secondary water tray, so a part of the structure needs to be reserved for installation. As a result, the entire evaporator coil system is not installed in the center of the air duct of the whole machine, which leads to inconsistent air volume passing through each heat exchanger, resulting in uneven heat exchange and poor heat exchange effect.

[0061] Based on this, an embodiment of the present invention provides an operation control method of an air conditioner, an air conditioner and an operation control device, the air conditioner comprising a heat exchanger and an air guide device, the air guide device being closer to the air inlet of the air conditioner than the heat exchanger, and the heat exchanger comprising multiple heat exchange flow paths; a first parameter characterizing heat exchange uniformity is calculated according to the return air temperature of all heat exchange flow paths of the heat exchanger, wherein the smaller the first parameter is, the better the heat exchange uniformity of the heat exchanger, that is, when the first parameter is larger, it indicates that the heat exchange uniformity of the heat exchanger is not good in the current state, and then the air guide device can be adjusted according to the return air temperature, that is, the wind field of the heat exchanger can be adjusted according to the thermal field measurement parameters of the heat exchanger, so as to make the coupling effect of the wind field and the thermal field of the heat exchanger better, thereby improving the heat exchange uniformity of the heat exchanger and enhancing the capacity and energy efficiency of the air conditioner.

[0062] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0063] Reference Figures 1 to 4 , Figure 1 FIG. 2( a ) is a side view of an indoor unit 100 of an air conditioner provided in an embodiment of the present invention; ... Figure 1 FIG. 2( b ) is an enlarged view of point A in FIG. 2( a ); Figure 3 yes Figure 1 BB section view in; Figure 4 2( a ) is a schematic diagram of a guide plate of an air conditioner provided in an embodiment of the present invention. The indoor unit 100 of the air conditioner includes a heat exchanger 110 and an air guide device, the air guide device is closer to the air inlet of the air conditioner than the heat exchanger 110, the heat exchanger 110 includes a plurality of single plates 111, and the single plate 111 includes a plurality of heat exchange flow paths 200. For example, as shown in FIG. 2( a ), the heat exchanger 110 includes four single plates 111, which are connected in sequence and have an M-shaped cross section. It is understood that in some other embodiments, the heat exchanger 110 may also include three single plates 111, so that the cross section of the heat exchanger 110 is N-shaped or inverted N-shaped. For example, when the leftmost single plate 111 is omitted in the embodiment shown in FIG2(a), the cross section of the heat exchanger 110 is inverted N-shaped. When the rightmost single plate 111 is omitted in the embodiment shown in FIG2(a), the cross section of the heat exchanger 110 is N-shaped. In some other embodiments, the heat exchanger 110 may also include two single plates 111, so that the cross section of the heat exchanger 110 is inverted V-shaped. For example, when the two single plates 111 on the left or the two single plates 111 on the right are omitted in the embodiment shown in FIG2(a), the cross section of the heat exchanger 110 is inverted V-shaped. It is understood that the heat exchanger 110 may also include a larger number of single plates 111.

[0064] In addition, refer to Figure 3 As shown, each single board 111 is provided with 3 heat exchange paths 200, and the entire heat exchanger 110 is provided with 4 single boards 111, and a total of 12 heat exchange paths 200 are provided. The refrigerant delivery pipeline of the air conditioner delivers the refrigerant to the air inlet of each heat exchange path 200 of the heat exchanger 110 respectively. After the refrigerant flows through the heat exchange path 200 for heat exchange, it is gathered together from the air outlet of each heat exchange path 200 and delivered to the air intake of the compressor. Among them, a temperature sensor is provided at the air outlet of each heat exchange path 200 to measure the return air temperature of the heat exchange path 200.

[0065] As shown in FIG. 2( a ), the side where two adjacent single plates 111 are not connected together forms an air inlet. For example, the upper sides of the two single plates 111 on the left side are connected together, and the lower sides are separated from each other and not connected together, so an air inlet is formed between the lower sides of the two single plates 111. In some embodiments, the air guide device of the air conditioner includes a guide plate 121 disposed in the middle of the air inlet and a driving motor 122 for driving the guide plate 121 to rotate, for example, referring to FIG. Figure 3 As shown, it is understandable that the drive motor 122 can also be replaced by other forms of drive devices that can drive the guide plate to rotate. Figure 3In the embodiment shown, the rotating shaft of the driving motor 122 is directly connected to the guide plate 121; in some other embodiments, the rotating shaft of the driving motor 122 can also be indirectly connected to the guide plate 121, for example, connected to the guide plate through a rack, connected to the guide plate through a chain, or connected to the guide plate through a belt. It can be understood that the guide plate 121 provided in the middle of the air inlet can change the air intake volume entering the single plate 111. For example, when the left guide plate 121 shown in FIG2(b) is vertically downward, that is, when it is located at the position a1 in FIG2(b), the air intake volume of the two single plates 111 is the same; after the guide plate 121 rotates counterclockwise by a certain angle to reach the positions a2, a3, a4, and a5, the air intake of the corresponding single plate 111 on the right side will be reduced, thereby causing the air volume passing through the single plate 111 on the right side to decrease, and correspondingly causing the air volume passing through the single plate 111 on the left side to increase.

[0066] In addition, in addition to the guide plate structure shown in FIG. 2( b ), the air guide device of the air conditioner may also adopt other forms of air guide devices, such as a roller structure, a flying wing structure, etc.

[0067] It should be noted that the air conditioner provided in the above embodiment can execute the operation control method introduced in the following embodiments, that is, the operation control method introduced in the following embodiments of the present invention can be applied to the air conditioner introduced in the embodiment of the present invention.

[0068] Reference Figure 5 The first aspect of the present invention provides an operation control method of an air conditioner, the method includes but is not limited to steps S510 to S520:

[0069] Step S510: obtaining the return air temperature of all heat exchange paths 200 of the heat exchanger 110, and calculating a first parameter characterizing the heat exchange uniformity of the heat exchanger 110; the smaller the first parameter is, the better the heat exchange uniformity of the heat exchanger 110 is.

[0070] For example, Figure 3 The heat exchanger 11 shown has 12 heat exchange paths 200, so the return air temperatures of the 12 heat exchange paths 200 are collected and recorded as: T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12; then the average return air temperature μ of all heat exchange paths 200 of the heat exchanger 110 is calculated, and the calculation formula of the average return air temperature μ is: Where N is the total number of heat exchange paths 200. Figure 3In the embodiment shown, N=12. Then, a first parameter characterizing the heat exchange uniformity of the heat exchanger 110 is further calculated. The first parameter may be the variance of the return air temperature of all heat exchange paths 200 of the heat exchanger 110, or the standard deviation of the return air temperature of all heat exchange paths 200 of the heat exchanger 110. The calculation formula of the standard deviation of the return air temperature is: Accordingly, the calculation formula for the variance of the return air temperature is:

[0071] Step S520: adjusting the air guide device according to the return air temperature to reduce the first parameter.

[0072] For example, in the air conditioner shown in FIG2(a), the air guide device is adjusted, that is, the rotation angle of the guide plate 121 is adjusted, so as to adjust the air intake volume of each single plate 111. It is understandable that when adjusting the rotation angle of the guide plate 121, it can be adjusted by stepless regulation or by fixed angle step regulation.

[0073] According to the operation control method of the air conditioner provided by the embodiment of the present invention, a first parameter characterizing the heat exchange uniformity is calculated according to the return air temperature of all the heat exchange flow paths 200 of the heat exchanger 110, wherein the smaller the first parameter is, the better the heat exchange uniformity of the heat exchanger 110 is, that is, when the first parameter is larger, it indicates that the heat exchange uniformity of the heat exchanger 110 is not good in the current state, and then the air guide device can be adjusted according to the return air temperature, that is, the wind field of the heat exchanger 110 is adjusted according to the thermal field measurement parameters of the heat exchanger 110, so as to make the wind field and thermal field coupling effect of the heat exchanger 110 better, thereby improving the heat exchange uniformity of the heat exchanger 110 and enhancing the capacity and energy efficiency of the air conditioner.

[0074] Reference Figure 6 According to the operation control method provided by some embodiments of the present invention, the air guide device is adjusted according to the return air temperature in step S520 to reduce the first parameter, including but not limited to steps S610 to S620:

[0075] Step S610 : when the first parameter is greater than the first preset value, the average return air temperature of each board 111 is calculated.

[0076] It should be noted that the first preset value is the minimum standard deviation or minimum variance that the system expects to be able to control. The first preset value is set in the parameter table of the air conditioner and can be changed and adjusted. When the first parameter is greater than the first preset value, it means that the heat exchange uniformity of the heat exchanger 110 in the current state is not good enough. At this time, the average return air temperature of each single board 111 is calculated. Figure 3Taking the heat exchanger shown as an example, the average return air temperatures of the four boards 111 from left to right are μ1, μ2, μ3, and μ4, respectively, and μ1=(T1+T2+T3) / 3, μ2=(T4+T5+T6) / 3, μ3=(T7+T8+T9) / 3, and μ4=(T10+T11+T12) / 3. After calculating the average return air temperatures of the four boards 111, it is possible to know which board 111 has the largest or smallest return air temperature average, so that the air guide device can be adjusted according to the return air temperature average, and then the air volume passing through the board 111 can be adjusted.

[0077] Step S620: adjusting the air guide device according to the average return air temperature to reduce the first parameter.

[0078] For example, in the air conditioner shown in FIG2(a), the air guide device is adjusted, that is, the rotation angle of the guide plate 121 is adjusted, so as to adjust the air intake volume of each single plate 111. It is understandable that when adjusting the rotation angle of the guide plate 121, it can be adjusted by stepless regulation or by fixed angle step regulation.

[0079] In the operation control method of the air conditioner provided in the embodiment of the present invention, a first parameter characterizing the heat exchange uniformity is calculated based on the return air temperature of all the heat exchange flow paths 200 of the heat exchanger 110. When the first parameter is greater than the first preset value, that is, the heat exchange uniformity of the heat exchanger 110 is not good in the current state, then the average return air temperature of each single board 111 is calculated, so that the single board 111 with a larger or smaller return air temperature average value can be determined, so as to adjust the air guide device, that is, adjust the wind field of the heat exchanger 110 according to the thermal field measurement parameters of the heat exchanger 110, so as to make the wind field and thermal field coupling effect of the heat exchanger 110 better, thereby improving the heat exchange uniformity of the heat exchanger 110 and enhancing the capacity and energy efficiency of the air conditioner.

[0080] Reference Figure 7 According to the operation control method provided by some embodiments of the present invention, the air guide device is adjusted according to the average return air temperature in step S620, including but not limited to steps S710 to S720:

[0081] Step S710: determining the single board 111 having the largest average return air temperature from the multiple single boards 111;

[0082] Step S720: Adjust the air guide device to reduce the air volume flowing through the single board 111 with the largest average return air temperature.

[0083] In this embodiment, the single board 111 with the largest average return air temperature is determined, indicating that the heat exchange capacity of the single board 111 is stronger than that of other single boards 111. Therefore, the air guide device is adjusted to reduce the air volume flowing through the single board 111 with the largest average return air temperature, which is beneficial to reducing the average return air temperature of the single board 111, so that the average return air temperature of the single board 111 is closer to that of other single boards 111, thereby making the wind field and thermal field coupling effect of the heat exchanger 110 better, thereby improving the heat exchange uniformity of the heat exchanger 110 and enhancing the capacity and energy efficiency of the air conditioner.

[0084] Reference Figure 8 According to the operation control method provided by some embodiments of the present invention, the air guide device is adjusted according to the average return air temperature in step S620, including but not limited to steps S810 to S820:

[0085] Step S810: determining the single board 111 having the smallest average return air temperature from the multiple single boards 111;

[0086] Step S820: Adjust the air guide device to increase the air volume flowing through the single board 111 with the smallest average return air temperature.

[0087] In this embodiment, the single board 111 with the smallest average return air temperature is determined, indicating that the heat exchange capacity of the single board 111 is weaker than that of other single boards 111. Therefore, the air guide device is adjusted to increase the air volume flowing through the single board 111 with the largest average return air temperature, which is beneficial to increase the average return air temperature of the single board 111, so that the average return air temperature of the single board 111 is closer to that of other single boards 111, thereby making the wind field and thermal field coupling effect of the heat exchanger 110 better, thereby improving the heat exchange uniformity of the heat exchanger 110 and enhancing the capacity and energy efficiency of the air conditioner.

[0088] According to the operation control method provided by some embodiments of the present invention, the first parameter is the variance or standard deviation of the return air temperature of all the heat exchange paths 200 of the heat exchanger 110 .

[0089] It is understandable that the variance or standard deviation of the return air temperature can better characterize the heat exchange uniformity of the heat exchanger 110. By comparing it with the minimum standard deviation or minimum variance that the system expects to be able to control, it can accurately determine whether the wind field of the heat exchanger 110 needs to be adjusted.

[0090] According to some embodiments of the present invention, the operation control method further includes:

[0091] When the preset trigger condition is met, the return air temperature of all heat exchange paths 200 of the heat exchanger 110 is re-acquired and the first parameter is calculated, and whether the first parameter is greater than the first preset value is re-determined;

[0092] The preset trigger conditions include any of the following:

[0093] After the air guide device is adjusted, the timing starts, and the timing duration reaches a first preset duration;

[0094] The timing starts when the first parameter is less than the first preset value, and the timing duration reaches the second preset duration; the second preset duration is greater than the first preset duration;

[0095] The change value of the temperature set by the user is greater than the second preset value;

[0096] The measured change in ambient temperature is greater than a third preset value;

[0097] The measured change in ambient humidity is greater than a fourth preset value.

[0098] It is understandable that after the air guide device is adjusted, the heat exchange uniformity of the heat exchanger 110 will change, but it is not certain whether the variance or standard deviation of the return air temperature is less than the minimum standard deviation or minimum variance that the system expects to be able to control. Therefore, after an interval of a first preset time, it is necessary to re-acquire the return air temperature of all heat exchange flow paths 200 of the heat exchanger 110 and calculate the first parameter, and re-judge whether the first parameter is greater than the first preset value; in addition, although the first parameter is less than the first preset value in the current state, the heat exchange uniformity of the air conditioner cannot be maintained at a good level all the time. Therefore, after a longer interval of a second preset time, re-acquiring data and making judgments can help to promptly discover the deterioration of the heat exchange uniformity of the air conditioner; in addition, changes in the user-set temperature, ambient temperature or ambient humidity will cause changes in the operating conditions of the air conditioner, so it is also necessary to re-acquire data and make judgments.

[0099] Next, combine Fig. 9 , the operation control method of the air conditioner of the present invention is introduced and explained in detail in combination with a specific embodiment of the present invention.

[0100] During the operation of the air conditioner, the return air temperature of all heat exchange paths 200 of the heat exchanger 110 is obtained: T1, T2, ..., TN, N is the total number of heat exchange paths 200; then the standard deviation of the return air temperature of all heat exchange paths 200 is calculated Wherein μ is the average return air temperature of all heat exchange paths 200 of the heat exchanger 110, which is calculated using the following formula: Then determine whether the standard deviation Tσ is less than the minimum standard deviation that the expected system can control If the standard deviation Tσ is smaller than the minimum standard deviation φ that the expected system can control, it means that the heat exchange uniformity of the heat exchanger 110 is not good in the current state. Then, the average return air temperature of each single board 111 is calculated, and then the angle of the guide plate corresponding to the single board 111 with the largest average return air temperature is adjusted to reduce the air volume passing through the single board 111. After the first preset time t1, the return air temperature of all heat exchange flow paths 200 is detected again, and subsequent calculations and judgments are re-performed; if the standard deviation Tσ is larger than the minimum standard deviation φ that the expected system can control, then the heat exchange uniformity of the heat exchanger 110 is good in the current state and can meet the requirements. There is no need to adjust the wind field of the heat exchanger 110. However, after a longer second preset time t2 or after the operation of the air conditioner changes, it is also necessary to detect the return air temperature of all heat exchange flow paths 200 again, and to re-perform subsequent calculations and judgments.

[0101] In this embodiment, the return air temperature is collected according to Figure 8 The logic diagram shown can, through continuous iterative adjustment, eventually reduce the return air temperature deviation of each heat exchange flow path 200 of the heat exchanger, achieve uniform heat exchange, achieve the best heat exchange effect, and enhance the capacity and energy efficiency of the air conditioner.

[0102] Reference Figures 1 to 4 A second aspect of the present invention provides an air conditioner, including: a heat exchanger 110, an air guide device and a controller 300, the air guide device is used to adjust the air inlet angle of the heat exchanger 110, and the air guide device is arranged closer to the air inlet of the air conditioner than the heat exchanger 110; the controller 300 is configured to: control the air guide device to adjust the air inlet angle according to the heat exchange uniformity of the heat exchanger 110.

[0103] It should be noted that the controller 300 communicates with the indoor unit 100 of the air conditioner via wired or wireless communication. The controller 300 may be disposed inside the indoor unit 100 or outside the indoor unit 100.

[0104] According to the air conditioner provided by the embodiment of the present invention, the controller 300 controls the air guide device to adjust the air inlet angle according to the heat exchange uniformity of the heat exchanger 110, that is, adjusts the wind field of the heat exchanger 110 according to the thermal field measurement parameters of the heat exchanger 110, so as to make the wind field and thermal field coupling effect of the heat exchanger 110 better, thereby improving the heat exchange uniformity of the heat exchanger 110 and enhancing the capacity and energy efficiency of the air conditioner.

[0105] In the air conditioner provided in some embodiments of the invention, the heat exchanger 110 includes a plurality of heat exchange paths 200, and the controller 300 is further configured as follows:

[0106] Before controlling the air guide device to adjust the air inlet angle according to the heat exchange uniformity of the heat exchanger 110,

[0107] Obtaining the return air temperature of all heat exchange paths 200 of the heat exchanger 110 and calculating the first parameter;

[0108] According to the heat exchange uniformity of the heat exchanger 110, the air guide device is controlled to adjust the air inlet angle, including:

[0109] The air guiding device is adjusted according to the return air temperature to reduce the first parameter; wherein: the smaller the first parameter is, the better the heat exchange uniformity of the heat exchanger 110 is.

[0110] It is understandable that the first parameter may be the variance of the return air temperature of all the heat exchange flow paths 200 of the heat exchanger 110 , or may be the standard deviation of the return air temperature of all the heat exchange flow paths 200 of the heat exchanger 110 .

[0111] In this embodiment, a first parameter characterizing heat exchange uniformity is calculated based on the return air temperature of all heat exchange paths 200 of the heat exchanger 110, wherein the smaller the first parameter is, the better the heat exchange uniformity of the heat exchanger 110 is, that is, when the first parameter is larger, it indicates that the heat exchange uniformity of the heat exchanger 110 is not good in the current state, and then the air guide device can be adjusted according to the return air temperature, that is, the wind field of the heat exchanger 110 is adjusted according to the thermal field measurement parameters of the heat exchanger 110, so as to make the wind field and thermal field coupling effect of the heat exchanger 110 better, thereby improving the heat exchange uniformity of the heat exchanger 110 and enhancing the capacity and energy efficiency of the air conditioner.

[0112] Referring to Figure 2(a) and Figure 3 In the air conditioner provided in some embodiments of the invention, the air guide device includes a guide plate 121 arranged at the air inlet and a driving motor 122 for driving the guide plate 121 to rotate, and the rotating shaft of the driving motor 122 is directly connected to the guide plate 121, or is connected to the guide plate 121 through one of a rack, a chain, and a belt.

[0113] In this embodiment, when the wind field of the heat exchanger 110 needs to be adjusted, the drive motor 122 can be controlled to work, and the drive motor 122 drives the guide plate 121 to rotate, so that the guide plate 121 changes the air volume distribution flowing to the heat exchanger 110, thereby changing the wind field of the heat exchanger 110.

[0114] In the air conditioner provided by some embodiments of the present invention, adjusting the air guide device includes: controlling the driving device to drive the guide plate 121 to rotate to a preset angle.

[0115] In this embodiment, as shown in Figures 2(a) and 2(b), when the guide plate 121 on the left side is facing vertically downward, that is, when it is located at position a1 in Figure 2(b), the air intake of the two single plates 111 is the same; the guide plate 121 rotates counterclockwise by a preset angle, and the guide plate 121 reaches position a2, which will reduce the air inlet of the corresponding single plate 111 on the right side, thereby causing the air volume passing through the single plate 111 on the right side to decrease, and correspondingly increasing the air volume passing through the single plate 111 on the left side; the driving device is controlled again to drive the guide plate 121 to rotate by a preset angle, and the guide plate 121 reaches position a3, and so on. Each time the driving device drives the guide plate 121 to rotate by a preset angle, the guide plate 121 changes from one position to another.

[0116] In the air conditioner provided by some embodiments of the present invention, the guide plates 121 include at least two, and each guide plate 121 rotates at a different preset angle.

[0117] It is understandable that, as shown in FIG. 2( a) and FIG. 2( b), two guide plates 121 are provided, and the preset angle of each rotation of the left guide plate 121 and the preset angle of each rotation of the right guide plate 121 can be the same or different. In other heat exchangers with more single plates 111, more guide plates 121 can also be provided.

[0118] In the air conditioner provided by some embodiments of the present invention, the heat exchanger 110 is constructed by at least two single plates 111 connected in sequence and having a cross-section in one of an M-shape, an N-shape, an inverted N-shape or an inverted V-shape.

[0119] It can be understood that, as shown in FIG2(a), the heat exchanger 110 includes four single plates 111, which are connected in sequence and have an M-shaped cross section. In some other embodiments, the heat exchanger 110 may also include three single plates 111, so that the cross section of the heat exchanger 110 is N-shaped or inverted N-shaped. For example, when the leftmost single plate 111 is omitted in the embodiment shown in FIG2(a), the cross section of the heat exchanger 110 is inverted N-shaped. When the rightmost single plate 111 is omitted in the embodiment shown in FIG2(a), the cross section of the heat exchanger 110 is N-shaped; in some other embodiments, the heat exchanger 110 may also include two single plates 111, so that the cross section of the heat exchanger 110 is inverted V-shaped. For example, when the two single plates 111 on the left or the two single plates 111 on the right are omitted in the embodiment shown in FIG2(a), the cross section of the heat exchanger 110 is inverted V-shaped.

[0120] The technical solution of the present invention is described in more detail below using an embodiment of an air conditioner.

[0121] Reference Figures 1 to 4The air conditioner includes a heat exchanger 110, an air guide device and a controller 300. The air guide device is closer to the air inlet of the air conditioner than the heat exchanger 110. The heat exchanger 110 includes a plurality of single plates 111. The heat exchanger 110 is constructed to be connected in sequence by at least two single plates 111 and has a cross-section of one of an M-type, an N-type, an inverted N-type or an inverted V-type; each single plate 111 includes a plurality of heat exchange paths 200, and a temperature sensor is provided at the air outlet of each heat exchange path 200 to measure the return air temperature of the heat exchange path 200; the controller 300 is configured to execute an operation control method of the air conditioner, and the operation control method includes the following steps: obtaining the return air temperature of all the heat exchange paths 200 of the heat exchanger 110, and calculating a first parameter characterizing the heat exchange uniformity of the heat exchanger 110; wherein the first parameter is the variance or standard deviation of the return air temperature of all the heat exchange paths 200 of the heat exchanger 110, therefore, the smaller the first parameter, The better the heat exchange uniformity of the heat exchanger 110; then compare the first parameter with the first preset value; wherein the first preset value is the minimum standard deviation or minimum variance that the system expects to be able to control, and the first preset value is set in the parameter table of the air conditioner and can be changed and adjusted; when the first parameter is greater than the first preset value, it means that the heat exchange uniformity of the heat exchanger 110 in the current state is not good enough, and then the return air temperature average value of each single board 111 is calculated at this time, and the single board 111 with the largest return air temperature average value or the single board 111 with the smallest return air temperature average value is determined from multiple single boards 111; then adjust the air guide device to reduce the air volume flowing through the single board 111 with the largest return air temperature average value or increase the air volume flowing through the single board 111 with the smallest return air temperature average value, so as to reduce the first parameter characterizing the heat exchange uniformity of the heat exchanger 110, thereby improving the heat exchange uniformity of the heat exchanger 110 and enhancing the capacity and energy efficiency of the air conditioner.

[0122] The wind guide device includes a drive motor 122 disposed on the guide plate 121 and used to drive the guide plate 121 to rotate. The rotating shaft of the drive motor 122 is directly connected to the guide plate 121, or is connected to the guide plate 121 through a rack, a chain, or a belt. When the wind field of the heat exchanger 110 needs to be adjusted, the drive motor 122 can be controlled to work, and the drive motor 122 drives the guide plate 121 to rotate a preset angle, thereby changing the amount of air entering each single plate 111. In addition, when multiple guide plates 121 are provided, the preset angles at which each guide plate 121 rotates can be the same or different.

[0123] It should also be noted that after the air guide device is adjusted, the heat exchange uniformity of the heat exchanger 110 will change. After the first preset time interval, it is necessary to re-acquire the return air temperature of all heat exchange paths 200 of the heat exchanger 110 and calculate the first parameter, and re-judge whether the first parameter is greater than the first preset value. It should also be noted that when the result of a certain judgment is that the first parameter is less than the first preset value, there is no need to adjust the air guide device of the air conditioner, but the heat exchange uniformity of the air conditioner cannot be maintained for a long time. Therefore, after a longer second preset time interval, re-acquiring data and making judgments can help to timely discover the deterioration of the heat exchange uniformity of the air conditioner; in addition, changes in the user-set temperature, ambient temperature or ambient humidity will cause changes in the operating conditions of the air conditioner, so it is also necessary to re-acquire data and make judgments.

[0124] In the technical solution provided by the embodiment of the present invention, the return air temperature of all the heat exchange flow paths 200 of the heat exchanger 110 is collected and calculated to obtain the heat exchange uniformity of the heat exchanger 110, that is, the thermal field measurement parameters of the heat exchanger 110 are obtained, so as to control the air guide device and adjust the wind field of the heat exchanger 110 to make the wind field and thermal field coupling effect of the heat exchanger 110 better, thereby improving the heat exchange uniformity of the heat exchanger, improving the capacity and energy efficiency of the air conditioner, and also having the advantages of reliable structure, low cost, strong operability, etc., especially for American duct air conditioners, it is of great significance to improve the capacity and energy efficiency, and focus on solving the heat exchange unevenness of such products.

[0125] Reference Fig.10 The third aspect of the present invention provides an operation control device 1000, including a memory 1010, a processor 1020, and a computer program stored in the memory 1010 and executable on the processor 1020. The processor 1020 executes the program to implement the operation control method of the air conditioner according to the first aspect of the present invention, for example, Figure 5 Method steps S510 to S520, execution Figure 6 Steps S610 to S620 of the method, execution Figure 7 Steps S710 to S720 of the method and execution Figure 8 Method steps S810 to S820.

[0126] In addition, a fourth aspect of the present invention provides a computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the air conditioner operation control method of the first aspect of the present invention, such as executing Figure 5 Method steps S510 to S520, execution Figure 6 Steps S610 to S620 of the method, execution Figure 7 Steps S710 to S720 of the method and execution Figure 8 Method steps S810 to S820.

[0127] It will be appreciated by those skilled in the art that all or some of the steps and systems in the disclosed methods above may be implemented as software, firmware, hardware and appropriate combinations thereof. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium or a non-transitory medium and a communication medium or a temporary medium. As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules or other data. Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk DVD or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that may be used to store desired information and may be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0128] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An operation control method for an air conditioner, characterized in that: The air conditioner includes a heat exchanger and an air guide device, the air guide device is closer to the air inlet of the air conditioner than the heat exchanger, the heat exchanger includes a plurality of heat exchange flow paths, and the method includes: Obtaining the return air temperature of all heat exchange flow paths of the heat exchanger, and calculating a first parameter characterizing the heat exchange uniformity of the heat exchanger; the smaller the first parameter is, the better the heat exchange uniformity of the heat exchanger is; The air guiding device is adjusted according to the return air temperature to reduce the first parameter.

2. The operation control method according to claim 1, characterized in that: The heat exchanger includes a plurality of single plates, each of which includes a plurality of heat exchange paths, and the air guide device is adjusted according to the return air temperature, including: When the first parameter is greater than a first preset value, calculating an average return air temperature of each of the single boards; The air guiding device is adjusted according to the average return air temperature.

3. The operation control method according to claim 2, characterized in that: The adjusting the air guide device according to the average return air temperature comprises: Determining a single board having the largest average return air temperature from the plurality of single boards; The air guide device is adjusted to reduce the air volume flowing through the single board with the largest average return air temperature.

4. The operation control method according to claim 2, characterized in that: The adjusting the air guide device according to the average return air temperature comprises: Determine a single board having the smallest average return air temperature from the plurality of single boards; The air guide device is adjusted to increase the air volume flowing through the single board with the smallest average return air temperature.

5. The operation control method according to claim 1, characterized in that: The first parameter is the variance or standard deviation of the return air temperature of all heat exchange flow paths of the heat exchanger.

6. The operation control method according to claim 2, characterized in that: Also includes: When a preset trigger condition is met, reacquiring the return air temperature of all heat exchange flow paths of the heat exchanger and calculating the first parameter, and re-determining whether the first parameter is greater than a first preset value; The preset trigger condition includes any one of the following: After the air guide device is adjusted, timing begins, and the timing duration reaches a first preset duration; The timing starts when the first parameter is less than the first preset value, and the timing duration reaches a second preset duration; the second preset duration is greater than the first preset duration; The change value of the temperature set by the user is greater than the second preset value; The measured change in ambient temperature is greater than a third preset value; The measured change in ambient humidity is greater than a fourth preset value.

7. An air conditioner, characterized in that: include: Heat exchanger; An air guide device, used for adjusting the air inlet angle of the heat exchanger, wherein the air guide device is arranged closer to the air inlet of the air conditioner than the heat exchanger; The controller is configured as: The air guide device is controlled according to the heat exchange uniformity of the heat exchanger to adjust the air inlet angle.

8. The air conditioner according to claim 7, characterized in that: The heat exchanger includes a plurality of heat exchange paths, and the controller is further configured to: Before controlling the air guide device to adjust the air inlet angle according to the heat exchange uniformity of the heat exchanger, Obtaining the return air temperature of all heat exchange flow paths of the heat exchanger and calculating a first parameter; The controlling the air guide device to adjust the air inlet angle according to the heat exchange uniformity of the heat exchanger comprises: The air guiding device is adjusted according to the return air temperature to reduce the first parameter; wherein: the smaller the first parameter is, the better the heat exchange uniformity of the heat exchanger is.

9. The air conditioner according to claim 8, characterized in that: The air guide device includes a guide plate arranged at the air inlet and a driving motor for driving the guide plate to rotate. The rotating shaft of the driving motor is directly connected to the guide plate, or is connected to the guide plate through one of a rack, a chain, and a belt.

10. The air conditioner according to claim 8, characterized in that: The adjusting of the air guide device comprises: controlling the driving device to drive the guide plate to rotate a preset angle.

11. The air conditioner according to claim 10, characterized in that: The guide plates include at least two, and the preset angle at which each guide plate rotates is different.

12. The air conditioner according to claim 7, characterized in that: The heat exchanger is constructed by sequentially connecting at least two single plates and having a cross section in one of an M-shape, an N-shape, an inverted N-shape or an inverted V-shape.

13. An operation control device, characterized in that: The invention comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the operation control method of the air conditioner according to any one of claims 1 to 6.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer to execute the operation control method of the air conditioner according to any one of claims 1 to 6.

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