CN110567087B

CN110567087B - Dehumidification method of air conditioner and air conditioner

Info

Publication number: CN110567087B
Application number: CN201910848994.5A
Authority: CN
Inventors: 王军; 李本卫
Original assignee: Hisense Shandong Air Conditioning Co Ltd
Current assignee: Hisense Air Conditioning Co Ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2021-04-30
Anticipated expiration: 2039-09-09
Also published as: CN110567087A

Abstract

The embodiment of the invention discloses a dehumidification method of an air conditioner and the air conditioner, relates to the technical field of air conditioners and solves the problems that the latent heat output by the air conditioner is low and the dehumidification capacity is poor in plum rain seasons in low-temperature and high-humidity areas. The specific scheme is as follows: after a dehumidification instruction is received, acquiring the outdoor temperature, the indoor temperature and the indoor relative humidity of the current period, determining the real-time dew point temperature according to the indoor temperature and the indoor relative humidity, determining the set dew point temperature according to the set temperature and the set relative humidity, determining the target rotating speed of the indoor motor according to the outdoor temperature, a first difference value and a second difference value, wherein the first difference value is the difference value between the indoor temperature and the set temperature, the second difference value is the difference value between the real-time dew point temperature and the set dew point temperature, and controlling the indoor motor to dehumidify according to the target rotating speed in the current period. The embodiment of the invention is used in the dehumidification process of the air conditioner.

Description

Dehumidification method of air conditioner and air conditioner

Technical Field

The embodiment of the invention relates to the technical field of air conditioners, in particular to a dehumidification method of an air conditioner and the air conditioner.

Background

Currently, the total refrigerating capacity of an air conditioner output during dehumidification is composed of sensible heat and latent heat. And the total load of the room at the time of dehumidification means the amount of sensible heat required to reduce the current indoor temperature to the set temperature and the amount of latent heat required to reduce the current indoor relative humidity to the set relative humidity.

In the prior art, the air conditioner can determine the rotating speed of an indoor motor in real time according to the difference value between the indoor temperature and the set temperature, so that the rotating speed of the motor is switched among a high gear, a medium gear and a low gear to dehumidify. However, in the rainy season in the medium and low temperature and high humidity areas, because the outdoor temperature in the high humidity area is not high, the sensible heat load of the room is small, the operation frequency of the compressor is low, the evaporation temperature is increased, the difference between the dew point temperature and the evaporation temperature is reduced, the latent heat output by the air conditioner is reduced, and the dehumidification capacity is poor at this moment. The refrigerating capacity output by the air conditioner can be generated, the indoor temperature can be only reduced to the set temperature, the indoor relative humidity is not reduced to the set relative humidity, and the user experience is poor. Therefore, how to improve the dehumidification capability in the plum rain season becomes a research topic of those skilled in the art.

Disclosure of Invention

The invention provides a dehumidification method of an air conditioner and the air conditioner, which solve the problems of low latent heat output by the air conditioner and poor dehumidification capability in plum rain seasons of medium-low temperature and high humidity areas.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, the present invention provides a dehumidification method of an air conditioner, which may include: after a dehumidification instruction is received, acquiring the outdoor temperature, the indoor temperature and the indoor relative humidity of the current period; determining real-time dew point temperature according to indoor temperature and indoor relative humidity, and determining set dew point temperature according to set temperature and set relative humidity; determining a target rotating speed of the indoor motor according to the outdoor temperature, the first difference value and the second difference value; the first difference is the difference between the indoor temperature and the set temperature, and the second difference is the difference between the real-time dew point temperature and the set dew point temperature; and the motor in the control room dehumidifies according to the target rotating speed in the current period.

With reference to the first aspect, in a possible implementation manner, determining a target rotation speed of an indoor motor according to an outdoor temperature, a first difference value, and a second difference value includes: if the outdoor temperature is greater than or equal to the first preset value and the first difference value is smaller than the second preset value, or the outdoor temperature is smaller than the first preset value, judging whether the second difference value is greater than a third preset value; if yes, when the rotating speed of the indoor motor in the previous period is determined to be less than or equal to the rotating speed corresponding to the lowest wind speed gear and greater than the lowest rotating speed, subtracting a rotating speed difference value from the rotating speed of the indoor motor in the previous period to obtain a target rotating speed, and when the rotating speed of the indoor motor in the previous period is determined to be greater than the rotating speed corresponding to the lowest wind speed gear, reducing the current wind speed gear by one gear, wherein the target rotating speed is the rotating speed corresponding to the current wind speed gear after the current wind speed gear is reduced by one gear; if not, the target rotating speed is the rotating speed of the indoor motor in the previous period.

With reference to the first aspect and the foregoing possible implementation manners, in another possible implementation manner, the method further includes: and if the outdoor temperature is greater than or equal to the first preset value and the first difference value is greater than or equal to the second preset value, the target rotating speed is the rotating speed of the indoor motor in the last period.

With reference to the first aspect and the possible implementations described above, in another possible implementation, the target rotation speed is greater than or equal to a minimum rotation speed at which the indoor motor can reliably operate, and is less than or equal to an upper limit value of the rotation speed during dehumidification.

In a second aspect, the present invention provides an air conditioner, which may include: the device comprises an acquisition unit, a determination unit and a control unit. And the acquisition unit is used for acquiring the outdoor temperature, the indoor temperature and the indoor relative humidity of the current period after receiving the dehumidification instruction. The determining unit is used for determining the real-time dew point temperature according to the indoor temperature and the indoor relative humidity and determining the set dew point temperature according to the set temperature and the set relative humidity; determining a target rotating speed of the indoor motor according to the outdoor temperature, the first difference value and the second difference value; the first difference is the difference between the indoor temperature and the set temperature, and the second difference is the difference between the real-time dew point temperature and the set dew point temperature. And the control unit is used for controlling the indoor motor to dehumidify in the current period according to the target rotating speed.

With reference to the second aspect, in a possible implementation manner, the determining unit is specifically configured to: if the outdoor temperature is greater than or equal to the first preset value and the first difference value is smaller than the second preset value, or the outdoor temperature is smaller than the first preset value, judging whether the second difference value is greater than a third preset value; if yes, when the rotating speed of the indoor motor in the previous period is determined to be less than or equal to the rotating speed corresponding to the lowest wind speed gear and greater than the lowest rotating speed, subtracting a rotating speed difference value from the rotating speed of the indoor motor in the previous period to obtain a target rotating speed, and when the rotating speed of the indoor motor in the previous period is determined to be greater than the rotating speed corresponding to the lowest wind speed gear, reducing the current wind speed gear by one gear, wherein the target rotating speed is the rotating speed corresponding to the current wind speed gear after the current wind speed gear is reduced by one gear; if not, the target rotating speed is the rotating speed of the indoor motor in the previous period.

With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the determining unit is further configured to: and if the outdoor temperature is greater than or equal to the first preset value and the first difference value is greater than or equal to the second preset value, the target rotating speed is the rotating speed of the indoor motor in the last period.

Specific implementation manners may refer to the first aspect or the possible implementation manners of the first aspect, and the behavioral function of the air conditioner in the dehumidification method of the air conditioner.

In a third aspect, an air conditioner is provided, including: at least one processor, a memory, a communication interface, and a communication bus. The processor is connected with the memory and the communication interface through a communication bus, the memory is used for storing computer execution instructions, and when the air conditioner runs, the processor executes the computer execution instructions stored in the memory, so that the air conditioner executes the dehumidification method of the air conditioner according to the first aspect or any one of the possible implementation manners of the first aspect.

In a fourth aspect, a computer storage medium is provided, on which computer executable instructions are stored, which, when run on an air conditioner, cause the air conditioner to perform a dehumidification method of the air conditioner as in the first aspect or any one of the possible implementations of the first aspect.

The dehumidification method of the air conditioner provided by the invention comprises the steps of obtaining the outdoor temperature, the indoor temperature and the indoor relative humidity of the current period after receiving a dehumidification instruction, determining the real-time dew point temperature according to the indoor temperature and the indoor relative humidity, determining the set dew point temperature according to the set temperature and the set relative humidity, determining the target rotating speed of an indoor motor according to the difference value of the outdoor temperature, the indoor temperature and the set temperature and the difference value of the real-time dew point temperature and the set dew point temperature, and controlling the indoor motor to dehumidify according to the target rotating speed in the current period. Therefore, compared with the prior art that the rotating speed of the indoor motor is adjusted according to the difference between the real-time dew point temperature and the set dew point temperature, the rotating speed of the indoor motor is adjusted according to the difference between the indoor temperature and the set temperature, and the dew point temperature is related to both the indoor temperature and the indoor relative humidity, so that when the rotating speed is determined according to the difference between the dew point temperature, the evaporating temperature is reduced, the latent heat component output by the air conditioner is improved, the sensible heat component is reduced, namely the dehumidifying capacity is improved, the reduction range of the indoor temperature is reduced, the indoor temperature and the indoor relative humidity can reach corresponding set values, and the user experience is improved.

Drawings

Fig. 1 is a schematic diagram illustrating an air conditioner according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a dehumidification method of an air conditioner according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the results of a prior art dehumidification method;

FIG. 4 is a graph showing the results of the dehumidification process of the present invention;

FIG. 5 is a schematic diagram of another air conditioner according to an embodiment of the present invention;

fig. 6 is a schematic composition diagram of another air conditioner according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic composition diagram of an air conditioner according to an embodiment of the present invention, and as shown in fig. 1, the air conditioner may include: at least one processor 11, a memory 12, a communication interface 13, and a communication bus 14.

The following describes the components of the air conditioner in detail with reference to fig. 1:

the processor 11 is a control center of the air conditioner, and may be a single processor or a collective term for a plurality of processing elements. For example, the processor 11 is a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present invention, such as: one or more Digital Signal Processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs).

In particular implementations, processor 11 may include one or more CPUs, such as CPU0 and CPU1 shown in FIG. 1, for example, as one embodiment. Also, as an example, the air conditioner may include a plurality of processors, such as the processor 11 and the processor 15 shown in fig. 1. Each of these processors may be a Single-core processor (Single-CPU) or a Multi-core processor (Multi-CPU). A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

The Memory 12 may be a Read-Only Memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical Disc storage, optical Disc storage (including Compact Disc, laser Disc, optical Disc, digital versatile Disc, blu-ray Disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory 12 may be self-contained and coupled to the processor 11 via a communication bus 14. The memory 12 may also be integrated with the processor 11.

In a specific implementation, the memory 12 is used for storing data in the present invention and software programs for executing the present invention. The processor 11 may perform various functions of the air conditioner by running or executing a software program stored in the memory 12 and calling data stored in the memory 12.

The communication interface 13 is any device such as a transceiver for communicating with other devices or communication Networks, such as a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), and the like. The communication interface 13 may include a receiving unit implementing a receiving function and a transmitting unit implementing a transmitting function.

The communication bus 14 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (enhanced Industry Standard Architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 1, but it is not intended that there be only one bus or one type of bus.

In order to solve the problems of low latent heat output by the air conditioner and poor dehumidification capacity in the plum rain season in medium-low temperature and high humidity areas, an embodiment of the present invention provides a dehumidification method of an air conditioner, as shown in fig. 2, the method may include:

201. and after the dehumidification instruction is received, acquiring the outdoor temperature, the indoor temperature and the indoor relative humidity of the current period.

The air conditioner may periodically adjust the rotation speed of the indoor motor to perform dehumidification after receiving a dehumidification command from a user, and a cycle is taken as an example to be described herein. The air conditioner may first acquire an outdoor temperature, an indoor temperature, and an indoor relative humidity in a current period. The outdoor temperature can be obtained through an outdoor environment temperature sensor, the indoor temperature can be obtained through an indoor environment temperature sensor on the indoor unit, and the indoor relative humidity can be obtained through a relative humidity sensor on the indoor unit.

It should be noted that the triggering instruction of the dehumidification method of the air conditioner may be a dehumidification instruction, and may also be an automatic wind speed instruction in the refrigeration mode selected by the user.

202. And determining the real-time dew point temperature according to the indoor temperature and the indoor relative humidity, and determining the set dew point temperature according to the set temperature and the set relative humidity.

After the air conditioner acquires the indoor temperature and the indoor relative humidity of the current period, the air conditioner can search the corresponding relation table of the indoor temperature, the indoor relative humidity and the dew point temperature, determine the real-time dew point temperature corresponding to the acquired indoor temperature and the acquired indoor relative humidity, and determine the set dew point temperature corresponding to the set temperature and the set relative humidity. The set relative humidity may be preset by a user through a remote controller, an air conditioner display screen, or an application of an intelligent terminal, and the range of the settable relative humidity is a relative humidity range that is comfortable for the user, such as 30% to 70%. When the user does not set, the set relative humidity may be a default value preset in the air conditioner, and the default value may be any value in the range of 30% -70%, such as 60%.

In a possible implementation manner, since the indoor temperature is an integer and the indoor relative humidity is an integer multiple of a certain value in the correspondence table of the indoor temperature, the indoor relative humidity and the dew point temperature, the air conditioner needs to process the indoor temperature which is not an integer and the indoor relative humidity which cannot be evenly divided by a certain value before determining the dew point temperature. Specifically, the non-integer indoor temperature may be added with a preset value and then rounded, and the indoor relative humidity that cannot be divisible by a certain value may be added with a corresponding preset value and then taken as an integral multiple of the certain value.

Illustratively, table 1 is a table of correspondence between indoor temperature, indoor relative humidity and dew point temperature, and as shown in table 1, the first row is indoor temperature in units of ° c, the first column is indoor relative humidity in units of%, the middle value is dew point temperature in units of ° c, and indoor relative humidity can be evenly divided by 5. It is assumed that the indoor temperature of the current period is 28.6 ℃, the indoor relative humidity is 78.3%, the preset value corresponding to the indoor temperature is 0.5 ℃, and the preset value corresponding to the indoor relative humidity is 2.5%. Then 28.6 c plus 0.5 c was rounded to 29 c, 78.3% plus 2.5% was rounded to 80% which is an integral multiple of 5, and finally the real-time dew point temperature corresponding to 29 c and 80% was found to be 26 c from table 1.

TABLE 1

	22	23	24	25	26	27	28	29	30
										40	9	10	11	12	13	14	15	16	17
45	10	11	12	13	14	15	16	17	18
										50	12	13	14	15	16	17	18	19	20
55	13	14	15	16	17	18	19	20	21
										60	14	15	16	17	18	19	20	21	22
65	15	16	17	18	19	20	21	22	23
										70	17	18	19	20	21	22	23	24	25
75	18	19	20	21	22	23	24	25	26
										80	19	20	21	22	23	24	25	26	27

203. And determining the target rotating speed of the indoor motor according to the outdoor temperature, the first difference value and the second difference value.

After determining the real-time dew point temperature and the set dew point temperature of the current period, the air conditioner may determine the target rotation speed of the indoor motor according to the outdoor temperature obtained in step 201, the first difference value, and the second difference value. The first difference is the difference between the indoor temperature and the set temperature, and the second difference is the difference between the real-time dew point temperature and the set dew point temperature. Specifically, the method comprises the following steps:

and if the outdoor temperature is greater than or equal to the first preset value and the first difference value is greater than or equal to the second preset value, the target rotating speed of the current period is the same as the rotating speed of the indoor motor in the previous period.

And if the outdoor temperature is greater than or equal to the first preset value and the first difference value is smaller than the second preset value, determining the target rotating speed by judging whether the second difference value is greater than a third preset value. If the second difference is larger than a third preset value, when the rotating speed of the indoor motor in the previous period is determined to be smaller than or equal to the rotating speed corresponding to the lowest wind speed gear and larger than the lowest rotating speed, subtracting the rotating speed difference from the rotating speed of the indoor motor in the previous period to obtain a target rotating speed, and when the rotating speed of the indoor motor in the previous period is determined to be larger than the rotating speed corresponding to the lowest wind speed gear, reducing the current wind speed gear by one gear, wherein the target rotating speed is the rotating speed corresponding to the current wind speed gear after the current wind speed gear is reduced by one gear; and if the second difference is smaller than or equal to a third preset value, the target rotating speed is the same as the rotating speed of the indoor motor in the previous period.

If the outdoor temperature is less than the first preset value, the method for determining the target rotation speed is the same as the method for determining the target rotation speed when the outdoor temperature is greater than or equal to the first preset value and the first difference is less than the second preset value, and details are not repeated herein.

It should be noted that, in the embodiment of the present invention, the target rotation speed is greater than or equal to the minimum rotation speed at which the indoor motor reliably operates, and is less than or equal to the rotation speed upper limit value during dehumidification. When the air conditioner comprises a plurality of rotating speed gears, such as high wind gear, medium wind gear and low wind gear, the upper limit value of the rotating speed can be the rotating speed corresponding to the high wind gear during dehumidification, and the lowest rotating speed is far lower than the rotating speed corresponding to the low wind gear during dehumidification. And the first preset value, the second preset value, the third preset value and the rotating speed difference value are all preset in the air conditioner. In addition, in the embodiment of the present invention, the rotation speed of the indoor motor in the first period may be a preset rotation speed value, for example, the preset rotation speed value may be a rotation speed corresponding to a high gear, or a rotation speed corresponding to a medium gear.

For example, based on the example in step 202, it is assumed that the set temperature is 26 ℃, the set relative humidity is 50%, the first preset value is 24 ℃, the second preset value is 2 ℃, the third preset value is 0 ℃, the rotation speed difference is 10 revolutions, the minimum rotation speed for reliable operation of the indoor motor is 100 revolutions, and the wind speed gears of the air conditioner include high wind, medium wind and low wind gears. As can be seen from Table 1, the set dew point temperatures corresponding to 26 ℃ and 50% were 16 ℃. Assuming that the preset rotation speed value is 1000 rotations of the rotation speed corresponding to the high wind gear, the indoor motor operates according to 1000 rotations in the first period. After 5 minutes of operation, assuming a second cycle with an outdoor temperature of 30 ℃, an indoor temperature of 28.5 ℃ and an indoor relative humidity of 78%, table 1 indicates that 29 ℃ and 80% correspond to a real-time dew point temperature of 26 ℃. Since the outdoor temperature is 30 ℃, which is greater than the first preset value of 24 ℃, and the first difference of 28.5-26 ℃ is 2.5 ℃, which is greater than the second preset value of 2 ℃, the rotation speed of the motor in the chamber in the second period is the same as the rotation speed in the first period, and is 1000 revolutions. After the indoor motor is operated for 5 minutes according to 1000 revolutions, if the outdoor temperature of the third period is 30 ℃, the indoor temperature is 27.4 ℃ and the indoor relative humidity is 73%, the real-time dew point temperature corresponding to 27 ℃ and 75% is 23 ℃ according to the table 1. Since the outdoor temperature is 30 ℃, which is greater than the first preset value of 24 ℃, the first difference value of 27.4-26 ℃ is 1.4 ℃, which is less than the second preset value of 2 ℃, and the second difference value of 23-16 ℃ is 7 ℃, which is greater than the third preset value of 0 ℃, the high wind gear is shifted down by one gear in the third period to the wind stroke gear, and at this time, the rotating speed of the indoor motor is 900 rotations corresponding to the wind stroke gear. And after the indoor motor runs for 5 minutes according to 900 revolutions, the air conditioner can obtain new outdoor temperature, the real-time dew point temperature is determined again, if the second difference is still greater than 0 ℃, the wind speed gear is adjusted from the middle wind gear to the low wind gear, and the rotating speed of the indoor motor is 800 revolutions corresponding to the low wind gear. And after the indoor motor runs for 5 minutes according to 800 revolutions, if the second difference value is still greater than 0 ℃, controlling the rotation speed of the indoor motor to be reduced by 10 revolutions until the minimum rotation speed is reduced to 100 revolutions.

For another example, based on the example in step 202, it is assumed that the set temperature is 26 ℃, the set relative humidity is 50%, the first preset value is 24 ℃, the second preset value is 2 ℃, the third preset value is 0 ℃, the rotation speed difference is 10 revolutions, the minimum rotation speed for reliable operation of the indoor motor is 100 revolutions, and the wind speed gears of the air conditioner include high wind, medium wind and low wind gears. As can be seen from Table 1, the set dew point temperatures corresponding to 26 ℃ and 50% were 16 ℃. Assuming that the preset rotation speed value is 800 revolutions corresponding to the low wind gear, the indoor motor operates according to 800 revolutions in the first period. After 5 minutes of operation, assuming that the outdoor temperature for the second cycle is 22 ℃, the indoor temperature is 26.4 ℃ and the indoor relative humidity is 73%, table look-up 1 shows that the real-time dew point temperature for 26 ℃ and 75% is 22 ℃. Since the outdoor temperature is 22 ℃, which is less than the first preset value of 24 ℃, and the second difference value of 22 ℃ -16 ℃ is 6 ℃, which is greater than the third preset value of 0 ℃, the rotating speed of the indoor motor in the second period is equal to the rotating speed of the first period minus the rotating speed difference value of 10 revolutions, which is 790 revolutions. And after the indoor motor runs for 5 minutes according to 790 revolutions, the air conditioner can acquire a new outdoor temperature and re-determine the real-time dew point temperature, and if the second difference is still greater than 0 ℃, the rotating speed is continuously controlled to be reduced by 10 revolutions until the rotating speed is reduced to the minimum rotating speed of 100 revolutions.

Further, in the embodiment of the present invention, the air conditioner may periodically adjust the operating frequency of the compressor in addition to periodically adjusting the rotation speed of the indoor motor, so as to perform dehumidification. Specifically, the current cycle is taken as an example for explanation: if the outdoor temperature of the current period is greater than or equal to the first preset value, the operation frequency can be determined according to the first difference value and changes along with the change of the first difference value; and if the outdoor temperature of the current period is less than the first preset value, the running frequency is a preset frequency value.

204. And the motor in the control room dehumidifies according to the target rotating speed in the current period.

To facilitate understanding by those skilled in the art, embodiments of the present invention are described herein in terms of a method for dehumidifying air conditioners in city a in a medium-low temperature, high humidity region. In a room with a certain fixed area in city A, under the condition that the temperature is set to be 27 ℃ and the relative humidity is set to be 50%, counting the sensible heat load required for reducing the indoor temperature to be 27 ℃ and the latent heat load required for reducing the indoor relative humidity to be 50% every day in the period of 5-9 months, and comparing the results of the dehumidification method in the prior art and the dehumidification method in the invention.

Fig. 3 is a graph showing the results of the dehumidification method according to the prior art, and as shown in fig. 3, the abscissa represents sensible heat, the ordinate represents latent heat, and black dots represent load point distribution for 5-9 months. As can be seen from fig. 3, the dense dark spots indicate that the room has a large latent heat load, i.e., dehumidification demand. And the coverage area of the irregular graph in fig. 3 shows the area enclosed by the sensible heat and the latent heat output when the air conditioner in the room continuously adjusts the rotating speed of the indoor motor to dehumidify according to the change of the difference value between the indoor temperature and the set temperature. Assuming that the air conditioner includes four stages of strong wind, high wind, medium wind, and low wind, the rotation speed is switched between the four stages. As can be seen from fig. 3, the sensible heat output from the air conditioner has a large component, and the latent heat output has a small air volume, resulting in less overlapping of the irregular pattern coverage area and the black spot distribution area. The overlapped portion indicates the cooling capacity of the air conditioner output, and can reduce the indoor temperature and the indoor relative humidity to the corresponding set values. The non-overlapped part indicates that the refrigerating capacity output by the air conditioner can only reduce one of the indoor temperature and the indoor relative humidity to the corresponding set value. At this time, if the refrigerating capacity of the air conditioner is controlled to the set temperature only, and the indoor relative humidity is not reduced to the set relative humidity, the room is still in a high humidity state, the air is humid, and the user feels uncomfortable; if the air conditioner continues to lower the indoor relative humidity to the set relative humidity, the indoor temperature will be lower than the set temperature, and the user feels cooler. For example, assuming that the sensible heat load required for a room is 1500W and the latent heat load required is 800W, if the sensible heat component output from the air conditioner is 1500W and the latent heat component is 800W, both the indoor temperature and the indoor relative humidity can be controlled to the set values. For another example, assuming that the sensible heat load required for a room is 800W and the latent heat load required is 600W, if the sensible heat component output by the air conditioner is 800W and the latent heat component is 200W, the indoor temperature can only be controlled to 27 ℃, and the indoor relative humidity is reduced by less than 50%; if the sensible heat component and the latent heat component output by the air conditioner are 600W and 1400W, the indoor relative humidity can be controlled to 50% only, and the indoor temperature can be lower than 27 ℃. Therefore, when the dehumidification method in the prior art is adopted, the dehumidification capacity is poor.

Fig. 4 is a schematic view showing the result of the dehumidification method according to the present invention, and as shown in fig. 4, the black spot distribution area is the same as that of fig. 3. However, after the rotational speed gear of the air conditioner is increased by 3 breeze gears, and the air conditioner in the room is dehumidified by the method of the above steps 201 to 204, it can be seen from comparing fig. 4 with fig. 3 that the sensible heat component output by the air conditioner is reduced, the latent heat component is increased, and the overlapping portion of the irregular pattern coverage area and the black spot distribution area is increased. That is, the dehumidification method of the present invention can improve the dehumidification capability.

The scheme provided by the embodiment of the invention is mainly introduced from the perspective of an air conditioner. It is understood that the air conditioner includes hardware structures and/or software modules corresponding to the respective functions in order to implement the above-described functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, in conjunction with the exemplary algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The embodiment of the present invention may perform the division of the functional modules for the air conditioner according to the method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

In the case of dividing each function module according to each function, fig. 5 shows another possible composition diagram of the air conditioner related to the above embodiment, as shown in fig. 5, the air conditioner may include: an acquisition unit 31, a determination unit 32 and a control unit 33.

Wherein, the obtaining unit 31 is configured to support the air conditioner to perform step 201 in the dehumidification method of the air conditioner shown in fig. 2.

And a determination unit 32 for supporting the air conditioner to perform

steps

202 and 203 of the dehumidification method of the air conditioner shown in fig. 2.

The control unit 33 is configured to support the air conditioner to perform step 204 in the dehumidification method of the air conditioner shown in fig. 2.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

The air conditioner provided by the embodiment of the invention is used for executing the dehumidification method of the air conditioner, so that the same effect as the dehumidification method of the air conditioner can be achieved.

In the case of an integrated unit, fig. 6 shows another possible schematic composition of the air conditioner according to the above-described embodiment. As shown in fig. 6, the air conditioner includes: a processing module 41, a communication module 42 and a storage module 43.

Wherein the processing module 41 is used for controlling and managing the action of the air conditioner, for example, the processing module 41 is used for supporting the air conditioner to execute step 201, step 202, step 203, step 204 in fig. 2, and/or other processes for the technology described herein. The communication module 42 is used to support the communication between the air conditioner and other network entities. And a storage module 43 for storing program codes and data of the air conditioner.

The processing module 41 may be the processor in fig. 1. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module 42 may be the communication interface of fig. 1. The storage module 43 may be the memory of fig. 1.

Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may be essentially or partially contributed to by the prior art, or all or part of the technical solution may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions within the technical scope of the present invention are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A dehumidification method of an air conditioner, the method comprising:

after a dehumidification instruction is received, acquiring the outdoor temperature, the indoor temperature and the indoor relative humidity of the current period;

determining real-time dew point temperature according to the indoor temperature and the indoor relative humidity, and determining set dew point temperature according to set temperature and set relative humidity;

determining a target rotating speed of the indoor motor according to the outdoor temperature, the first difference value and the second difference value; wherein the first difference is a difference between the indoor temperature and the set temperature, and the second difference is a difference between the real-time dew point temperature and the set dew point temperature;

controlling the indoor motor to dehumidify in the current period according to the target rotating speed;

the determining the target rotating speed of the indoor motor according to the outdoor temperature, the first difference and the second difference comprises:

if the outdoor temperature is greater than or equal to a first preset value and the first difference value is smaller than a second preset value, or the outdoor temperature is smaller than the first preset value, judging whether the second difference value is larger than a third preset value;

if yes, when the rotating speed of the indoor motor in the previous period is determined to be less than or equal to the rotating speed corresponding to the lowest wind speed gear and greater than the lowest rotating speed, subtracting a rotating speed difference value from the rotating speed of the indoor motor in the previous period to obtain a target rotating speed, and when the rotating speed of the indoor motor in the previous period is determined to be greater than the rotating speed corresponding to the lowest wind speed gear, turning down the current wind speed gear by one gear, wherein the target rotating speed is the rotating speed corresponding to the current wind speed gear after turning down by one gear;

if not, the target rotating speed is the rotating speed of the indoor motor in the previous period.

2. The dehumidifying method of an air conditioner according to claim 1, wherein the method further comprises:

and if the outdoor temperature is greater than or equal to the first preset value and the first difference value is greater than or equal to the second preset value, the target rotating speed is the rotating speed of the indoor motor in the last period.

3. The dehumidifying method of an air conditioner according to any one of claims 1-2, wherein the target rotation speed is greater than or equal to a minimum rotation speed at which the indoor motor can be reliably operated, and is less than or equal to an upper limit value of the rotation speed at the time of dehumidification.

4. An air conditioner, characterized in that the air conditioner comprises: the device comprises an acquisition unit, a determination unit and a control unit;

the acquiring unit is used for acquiring the outdoor temperature, the indoor temperature and the indoor relative humidity of the current period after receiving the dehumidifying instruction;

the determining unit is used for determining the real-time dew point temperature according to the indoor temperature and the indoor relative humidity and determining the set dew point temperature according to the set temperature and the set relative humidity; determining a target rotating speed of the indoor motor according to the outdoor temperature, the first difference value and the second difference value; wherein the first difference is a difference between the indoor temperature and the set temperature, and the second difference is a difference between the real-time dew point temperature and the set dew point temperature;

the control unit is used for controlling the indoor motor to dehumidify in the current period according to the target rotating speed;

the determining unit is specifically configured to:

5. The air conditioner according to claim 4, wherein the determination unit is further configured to:

6. An air conditioner, characterized in that the air conditioner comprises: a processor, a memory, a communication interface, and a communication bus;

the processor is connected with the memory and the communication interface through the communication bus, the memory is used for storing computer execution instructions, and when the air conditioner is operated, the processor executes the computer execution instructions stored by the memory so as to enable the air conditioner to execute the dehumidification method of the air conditioner according to any one of claims 1 to 3.

7. A computer storage medium, characterized in that the computer storage medium comprises computer-executable instructions that, when run on an air conditioner, cause the air conditioner to perform a dehumidification method of the air conditioner as recited in any one of claims 1 to 3.