CN113983635A

CN113983635A - Dehumidification method of air conditioner and air conditioner

Info

Publication number: CN113983635A
Application number: CN202111165984.5A
Authority: CN
Inventors: 翟振坤; 连彩云; 廖敏; 梁之琦; 熊绍森; 徐耿彬
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-01-28

Abstract

The invention belongs to the technical field of air conditioners, and particularly relates to a dehumidification method of an air conditioner and the air conditioner, wherein the air conditioner comprises a plurality of dehumidification modes; judging whether the air conditioner meets a first preset condition or not; when the first preset condition is judged to be met, the air conditioner is enabled to enter a first dehumidification mode; judging whether the air conditioner meets a second preset condition or not in the first dehumidification mode, and if so, exiting the first dehumidification mode and entering the second dehumidification mode; judging whether the air conditioner meets a third preset condition or not in the second dehumidification mode, and if so, exiting the second dehumidification mode and entering the third dehumidification mode; and after the air conditioner enters a third dehumidification mode, correcting the frequency of the compressor according to the frequency of the compressor required by the normal refrigeration mode. The air conditioner dehumidification method and the air conditioner can improve the dehumidification efficiency and ensure the dehumidification effect in the refrigeration and dehumidification process.

Description

Dehumidification method of air conditioner and air conditioner

Technical Field

The invention belongs to the field of air conditioners, and particularly relates to a dehumidification method of an air conditioner and the air conditioner.

Background

When an existing air conditioner dehumidifies, a refrigeration mode is often adopted, the frequency of a compressor in the refrigeration mode is usually controlled according to the difference value between the room temperature and the set temperature, especially, under the condition that the room humidity is high, when the indoor environment temperature is close to the set temperature, the frequency of the compressor is low, the temperature of an evaporator is high, the dehumidification efficiency is reduced, and the dehumidification effect is influenced.

The present invention has been made in view of this situation.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an air conditioner dehumidification method and an air conditioner which can improve the dehumidification efficiency and ensure the dehumidification effect in the refrigeration and dehumidification process.

To solve the above technical problems, a first object of the present invention is to provide a dehumidifying method of an air conditioner, the dehumidifying method comprising,

receiving a dehumidification instruction;

judging the current outdoor environment temperature T_{Outer ring}User-set temperature T_{Setting up}Temperature T of indoor environment_{Inner ring}Whether the temperature difference and the relative humidity RH of the indoor environment meet a first preset condition or not; when the first preset condition is judged to be met, the air conditioner is enabled to enter a first dehumidification mode;

after the air conditioner enters a first dehumidification mode, according to the real-time evaporator temperature T_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}Until the current indoor ambient temperature T_{Inner ring}With a user-set temperature T_{Setting up}The difference between the first dehumidification mode and the second dehumidification mode and the relative humidity RH of the current indoor environment meet a second preset conditionFormula (I);

after the air conditioner enters a second dehumidification mode, according to the real-time outdoor environment temperature T_{Outer ring}Indoor ambient temperature T_{Inner ring}With a user-set temperature T_{Setting up}The difference between the two corrects the frequency of the compressor until the relative humidity RH of the current indoor environment and the indoor environment temperature T_{Outer ring}With a user-set temperature T_{Setting up}When the difference value meets a third preset condition, the second dehumidification mode is exited and the third dehumidification mode is entered;

and after the air conditioner enters a third dehumidification mode, correcting the frequency of the compressor according to the frequency of the compressor required by the normal refrigeration mode.

Further optionally, the determining the current outdoor environment temperature T_{Outer ring}User-set temperature T_{Setting up}Temperature T of indoor environment_{Inner ring}Whether the temperature difference and the relative humidity RH of the indoor environment meet a first preset condition or not; when the first preset condition is judged to be met, the air conditioner is enabled to enter a first dehumidification mode, which comprises

Entering a first dehumidification mode when the following conditions are simultaneously satisfied:

current indoor ambient temperature T_{Inner ring}And a user-set temperature T_{Setting up}The temperature difference Δ T satisfies: delta T is less than or equal to a first set temperature difference;

current outdoor ambient temperature T_{Outer ring}Not more than a first set temperature;

the current indoor relative humidity RH is greater than or equal to a first set humidity.

Further optionally, after the air conditioner enters the first dehumidification mode, the air conditioner operates according to the real-time evaporator temperature T_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}Controlling the compressor frequency by a difference comprising:

according to the current indoor environment temperature T_{Inner ring}And the current indoor relative humidity RH to determine the target evaporator temperature T_{Target inner tube}；

Comparing the current evaporator real-time temperature T_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}According to the comparison result, the running frequency of the compressor is adjusted to ensure that the evaporator is in real timeTemperature T_{Real-time inner tube}Within the optimal temperature difference range.

Further optionally, the current indoor environment temperature T is used as the basis_{Inner ring}And the current indoor relative humidity RH to determine the target evaporator temperature T_{Target inner tube}Comprises that

Determining the current indoor environment temperature T according to the first preset corresponding relation between the indoor environment temperature, the indoor relative humidity and the target temperature of the evaporator_{Inner ring}A first temperature range in the first preset corresponding relationship and a relative humidity range in the first preset corresponding relationship of the current indoor relative humidity RH;

determining an evaporator target temperature corresponding to both the first temperature range and the humidity range, the evaporator target temperature being a current indoor ambient temperature T_{Inner ring}And the target evaporator temperature T corresponding to the current indoor relative humidity RH in the first preset corresponding relation_{Target inner tube}。

Further optionally, in the first preset correspondence, the target evaporator temperature is related to the dew point temperature of air.

Further optionally, in the first preset corresponding relationship, a first temperature range in which a plurality of temperature values sequentially increase and a humidity range in which a plurality of relative humidity values sequentially increase are included;

sequentially decreasing the target temperature of the evaporator corresponding to the first temperature range in which the temperature values are sequentially increased;

and the target temperatures of the evaporators corresponding to the humidity ranges with the relative humidity values increasing sequentially decrease sequentially.

Further optionally, the comparing current evaporator real-time temperature T_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}According to the comparison result, the running frequency of the compressor is adjusted to ensure that the evaporator has real-time temperature T_{Real-time inner tube}Within an optimum temperature difference range, including

Obtaining the current evaporator real-time temperature T_{Real-time inner tube}Comparing the current evaporator real-time temperature T_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}The size of (d);

when the following conditions are satisfied: t is_{Real-time inner tube}＜T_{Target inner tube}-a setpoint controlling the compressor to slow down until the compressor frequency drops to a minimum frequency;

when the following conditions are satisfied: t is_{Target inner tube}-a set value ≦ T_{Real-time inner tube}≤T_{Target inner tube}+ setpoint, evaporator real time temperature T_{Real-time inner tube}Maintaining the current compressor frequency within the optimal temperature difference range;

when the following conditions are satisfied: t is_{Real-time inner tube}＞T_{Target inner tube}And + set value, controlling the frequency of the compressor to be increased until the frequency of the compressor is increased to the maximum frequency.

Further optionally, the current indoor ambient temperature T_{Inner ring}With a user-set temperature T_{Setting up}The difference between the first and second humidity levels and the relative humidity RH of the current indoor environment satisfy a second predetermined condition, and the first dehumidification mode is exited to enter a second dehumidification mode, which includes

In the first dehumidification mode, when the following conditions are simultaneously met, the first dehumidification mode is exited, and the second dehumidification mode is entered:

current indoor ambient temperature T_{Inner ring}And a user-set temperature T_{Setting up}The temperature difference Δ T satisfies: delta T is less than or equal to a second set temperature difference, and the second set temperature difference is less than or equal to 0 and less than or equal to the first set temperature difference;

the current indoor relative humidity RH is less than or equal to a second set humidity, and the second set humidity is less than the first set humidity.

Further optionally, after the air conditioner enters the second dehumidification mode, the air conditioner operates according to the real-time outdoor environment temperature T_{Outer ring}Indoor ambient temperature T_{Inner ring}With a user-set temperature T_{Setting up}The difference between corrects for compressor frequency, including:

according to the current indoor environment temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}To determine a first correction value Δ F1 for the compressor;

compressor operating frequency F in first dehumidification mode_{Dehumidification mode 1}On the basis ofCorrecting the running frequency F of the compressor to meet the condition that F is equal to F_{Dehumidification mode 1}-ΔF1；

And controlling the compressor to operate according to the corrected frequency.

Further optionally, the current indoor environment temperature T is used as the basis_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}To determine a first correction value for the compressor, Δ F1, comprising

According to the current indoor environment temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}Determining the current indoor ambient temperature T according to the second preset corresponding relation with the first correction value_{Inner ring}And a user-set temperature T_{Setting up}Is in a first temperature difference range of the second preset corresponding relation and the current outdoor environment temperature T_{Outer ring}A second temperature range in the second preset corresponding relation;

determining a first correction value corresponding to the first temperature difference range and the second temperature range at the same time, wherein the first correction value is the current indoor environment temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), current outdoor ambient temperature T_{Outer ring}The first correction value Δ F1 corresponding to the second predetermined correspondence relationship.

Further optionally, the second preset corresponding relationship includes a first temperature difference range in which a plurality of temperature difference values sequentially increase and a second temperature range in which a plurality of temperature values sequentially increase;

the first correction values corresponding to the first temperature difference ranges in which the temperature difference values are sequentially increased are sequentially decreased;

and the first correction values corresponding to the temperature ranges in which the second temperature values are sequentially increased are sequentially decreased.

Further optionally, the relative humidity RH and the indoor environment temperature T of the current indoor environment_{Outer ring}With a user-set temperature T_{Setting up}When the difference value meets a third preset condition, the second dehumidification mode is exited to enter a third dehumidification mode, which comprises

In the second dehumidification mode, when the following conditions are simultaneously met, the second dehumidification mode is exited, and the third dehumidification mode is entered:

current indoor ambient temperature T_{Inner ring}And a user-set temperature T_{Setting up}The temperature difference Δ T satisfies: delta T is less than or equal to a third set temperature difference, and the third set temperature difference is less than 0 and less than or equal to a second set temperature difference;

the current indoor relative humidity RH is less than or equal to a third set humidity, and the third set humidity is less than the second set humidity.

Further optionally, after the air conditioner enters the third dehumidification mode, correcting the frequency of the compressor according to the frequency of the compressor required by the normal refrigeration mode, including

According to the current indoor environment temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}To determine a second compressor correction value Δ F2;

compressor operating frequency F in normal cooling mode_{Normal refrigeration}On the basis of the frequency of the compressor, the operation frequency F of the compressor is corrected, and F is satisfied_{Normal refrigeration}-ΔF2；

And controlling the compressor to operate according to the corrected frequency.

Further optionally, the current indoor environment temperature T is used as the basis_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}To determine a second correction value for the compressor, Δ F2, comprising

According to the current indoor environment temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}Determining the current indoor ambient temperature T according to the third preset corresponding relation with the second correction value_{Inner ring}And a user-set temperature T_{Setting up}Is in a second temperature difference range of the third preset corresponding relation and the current outdoor environment temperature T_{Outer ring}A third temperature range in the third preset correspondence;

determining a second correction value corresponding to the second temperature difference range and the third temperature range at the same time, wherein the second correction value is the current indoor environment temperature T_{Inner ring}And user equipmentConstant temperature T_{Setting up}Temperature difference of (1), current outdoor ambient temperature T_{Outer ring}And a second correction value Δ F2 corresponding to the third predetermined correspondence relationship.

Further optionally, the third preset corresponding relationship includes a second temperature difference range in which the temperature difference values sequentially increase and a third temperature range in which the temperature values sequentially increase;

a plurality of temperature difference values are sequentially increased, and second positive values corresponding to second temperature difference ranges are sequentially decreased;

and the second correction values corresponding to the third temperature ranges in which the temperature values are sequentially increased are sequentially decreased.

A second object of the invention proposes a control device comprising one or more processors and a non-transitory computer-readable storage medium storing program instructions which, when executed by the one or more processors, are adapted to implement the method according to any of the preceding claims.

A third object of the invention proposes a non-transitory computer-readable storage medium having stored thereon program instructions for implementing the method according to any one of the above when the program instructions are executed by one or more processors.

A fourth object of the present invention is to provide an air conditioner, which employs the method of any one of the above, or includes the above control device, or has the above non-transitory computer-readable storage medium.

After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:

according to the invention, through setting three different dehumidification modes, when the outdoor environment parameters sequentially reach the set conditions of the three dehumidification modes, the air conditioner is controlled to sequentially execute the three dehumidification modes, so that the dehumidification efficiency is improved and the dehumidification effect is ensured on the premise of ensuring the comfort of indoor temperature.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1: is a control logic diagram of an embodiment of the present invention;

FIG. 2: is a control flow diagram of a specific implementation of an embodiment of the present invention.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

When an existing air conditioner dehumidifies, a refrigeration mode is often adopted, the frequency of a compressor in the refrigeration mode is usually controlled according to the difference value between the room temperature and the set temperature, especially, under the condition that the room humidity is high, when the indoor environment temperature is close to the set temperature, the frequency of the compressor is low, the temperature of an evaporator is high, the dehumidification efficiency is reduced, and the dehumidification effect is influenced. In order to solve the problem of low dehumidification efficiency caused by the temperature rise of the evaporator in the refrigeration and dehumidification process, the present embodiment provides a dehumidification method of an air conditioner, where the air conditioner of the present embodiment includes a plurality of dehumidification modes, as shown in a control flow chart shown in fig. 1, and the dehumidification method includes the following steps:

s1, receiving a dehumidification instruction;

s2, judging the current outdoor environment temperature T_{Outer ring}User-set temperature T_{Setting up}Temperature T of indoor environment_{Inner ring}Whether the temperature difference and the relative humidity RH of the indoor environment meet a first preset condition or not; when the first preset condition is judged to be met, the air conditioner is enabled to enter a first dehumidification mode;

s3, after the air conditioner enters the first dehumidification mode, according to the real-time evaporator temperature T_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}Until the current indoor ambient temperature T_{Inner ring}With a user-set temperature T_{Setting up}The difference between the first and second humidity values and the relative humidity RH of the current indoor environment meet a second preset condition, and the first dehumidification mode is exited to enter a second dehumidification mode;

s4, after the air conditioner enters the second dehumidification mode, according to the real-time outdoor environment temperature T_{Outer ring}Indoor ambient temperature T_{Inner ring}With a user-set temperature T_{Setting up}The difference between the two corrects the frequency of the compressor until the relative humidity RH of the current indoor environment and the indoor environment temperature T_{Outer ring}With a user-set temperature T_{Setting up}When the difference value meets a third preset condition, the second dehumidification mode is exited and the third dehumidification mode is entered;

and S5, after the air conditioner enters the third dehumidification mode, correcting the frequency of the compressor according to the frequency of the compressor required by the normal refrigeration mode.

This embodiment is through setting up three kinds of different dehumidification modes, and when outdoor environmental parameter reached the settlement condition of three kinds of dehumidification modes, the control air conditioner carried out three kinds of dehumidification modes in proper order, through the control in proper order of first dehumidification mode, second dehumidification mode, third dehumidification mode for the system can steadily adjust, can promote dehumidification efficiency on the one hand, and on the other hand can maintain the load in room, guarantees the refrigeration effect in room.

Further optionally, as shown in the control flow chart of fig. 2, the determining the current outdoor environment temperature T_{Outer ring}User-set temperature T_{Setting up}Temperature T of indoor environment_{Inner ring}Whether the temperature difference and the relative humidity RH of the indoor environment meet a first preset condition or not; when the first preset condition is judged to be met, the air conditioner is enabled to enter a first dehumidification mode, including,

current indoor ambient temperature T_{Inner ring}And a user-set temperature T_{Setting up}The temperature difference Δ T satisfies: delta T is less than or equal to a first set temperature difference; the value range of the first set temperature difference is optionally 3-5 ℃;

current outdoor ambient temperature T_{Outer ring}Not more than a first set temperature; the first set temperature is 30-50 ℃ optionally;

the current indoor relative humidity RH is greater than or equal to a first set humidity, and the first set humidity is 60% optionally.

And when any one of the three conditions is not met, the first dehumidification mode is not entered, and the refrigeration mode is continuously operated.

The embodiment passes through the temperature difference delta T and the outdoor environment temperature T_{Outer ring}The dehumidification method has the advantages that the size of the room load is shown, the room humidity condition is shown by the indoor relative humidity, the first dehumidification mode is only started under the conditions that the room load is large and the humidity is high, and the dehumidification effect of high temperature and high humidity is guaranteed.

Further alternatively, as shown in the control flow chart of fig. 2, after the air conditioner enters the first dehumidification mode, the air conditioner operates according to the real-time evaporator temperature T_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}Controlling the compressor frequency by a difference comprising:

Comparing the current evaporator real-time temperature T_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}According to the comparison result, the running frequency of the compressor is adjusted to ensure that the evaporator has real-time temperature T_{Real-time inner tube}Within an optimal temperature range.

Target evaporator temperature T in the present embodiment_{Target inner tube}With the current indoor ambient temperature T_{Inner ring}And the current indoor relative humidity. In order to ensure the dehumidification effect, the higher the indoor environment is, the higher the indoor relative humidity is, and the corresponding evaporator target T is_{Target inner tube}The lower the temperature. At the target evaporator temperature T_{Target inner tube}After the determination, according to the real-time temperature T of the evaporator_{Real-time inner tube}To adjust the running frequency of the compressor to make the evaporator real-time temperature T_{Real-time inner tube}To reach the target temperature T of the evaporator_{Target inner tube}。

Further optionally, according to the current indoor ambient temperature T_{Inner ring}And the current indoor relative humidity RH to determine the target evaporator temperature T_{Target inner tube}Comprises that

Determining the current indoor environment temperature T according to the first preset corresponding relation between the indoor environment temperature, the indoor relative humidity and the target temperature of the evaporator_{Inner ring}A first temperature range in the first preset corresponding relation and a relative humidity range in the first preset corresponding relation of the current indoor relative humidity RH;

determining a target evaporator temperature corresponding to the first temperature range and the relative humidity range, wherein the target evaporator temperature is the current indoor environment temperature T_{Inner ring}The target evaporator temperature T corresponding to the current indoor relative humidity RH in the first preset corresponding relationship_{Target inner tube}。

In some embodiments, the first predetermined corresponding relationship is a corresponding relationship shown in table one, and the first predetermined corresponding relationship is stored in a controller of the air conditioner and is obtained according to the obtained current indoor environment temperature T_{Inner ring}And is relatively wet in the roomThe degree RH obtains the corresponding target evaporator temperature by means of table lookup.

Table one: first predetermined corresponding relation

Further optionally, in the first predetermined correspondence, the target evaporator temperature is related to the dew point temperature of the air, because the moisture in the air is likely to be separated only when the temperature of the evaporator is below the dew point temperature. Air dew point temperature T_{Dew point}Can be calculated according to the current indoor environment temperature and the relative humidity, and the air dew point temperature T_{Dew point}The calculation methods of (a) are well known to those skilled in the art and are not described in detail herein.

Further optionally, in the first preset corresponding relationship, a first temperature range in which the temperature values sequentially increase and a humidity range in which the relative humidity values sequentially increase are included;

In Table I, a1 < a2 < a3, the higher the inner loop temperature, the higher the evaporator target temperature T_{Target inner tube}The lower the temperature, the better the dehumidification effect. X1 < X2, the higher the relative humidity, the higher the target evaporator temperature T_{Target inner tube}The lower the temperature, the better the dehumidification effect. Determining the target evaporator temperature T from the above table_{Target inner tube}And the dehumidification requirements of different indoor environment temperatures and relative humidity can be met.

Further alternatively, as shown in the control flow chart of fig. 2, the current evaporator real-time temperature T is compared_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}According to the comparison result, the running frequency of the compressor is adjusted to ensure that the evaporator has real-time temperature T_{Real-time inner tube}Within an optimum temperature range, including

Obtaining current evaporator performanceTime temperature T_{Real-time inner tube}Comparing the current evaporator real-time temperature T_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}The size of (d);

In this embodiment, the real-time inner tube temperature T is measured_{Real-time inner tube}And T_{Of target inner tube}Comparing the sizes of the two pipes when the temperature T of the inner pipe is measured_{Real-time inner tube}Lower, i.e. less than T_{Target inner tube}-a set value requiring a decrease in compressor frequency to raise the evaporator temperature, the rate of temperature rise being increased by decreasing the compressor frequency to a minimum frequency. When the temperature T of the inner tube_{Real-time inner tube}Higher, i.e. greater than T_{Target inner tube}+ set point, the evaporator temperature is decreased by increasing the compressor frequency, and the rate of temperature decrease is increased by increasing the compressor frequency to the maximum frequency. The set value can be adjusted according to actual conditions, and the set value can be selected to be 0-1 ℃. When the temperature T of the inner tube_{Real-time inner tube}At an optimum temperature range, i.e. T_{Target inner tube}-a set value ≦ T_{Real-time inner tube}≤T_{Target inner tube}+ set value, in this temperature range and humidity range obtain the best cooling effect and dehumidification effect.

Further optionally, as shown in the control flow chart of fig. 2, the current indoor ambient temperature T_{Inner ring}With a user-set temperature T_{Setting up}The difference between the first and second humidity levels and the relative humidity RH of the current indoor environment satisfy a second predetermined condition, and the first dehumidification mode is exited to enter a second dehumidification mode, which includes

And when any one of the two conditions is not met, the second dehumidification mode is not entered, and the first dehumidification mode is continuously operated.

In this embodiment, because in the cooling dehumidification process, the difference in temperature Δ T between the room temperature and the set temperature is smaller and smaller, and the humidity is also lower and smaller, the purpose of setting up the second dehumidification mode is because the indoor ambient temperature can reduce in the dehumidification process, when being close to the set temperature, through correcting the frequency downwards, reduces the output of cold volume, and the range of avoiding indoor ambient temperature to reduce is great. In the cooling and dehumidifying process, because the temperature difference delta T between the room temperature and the set temperature is smaller and smaller, the humidity is lower and lower, the second dehumidifying mode is entered after the two conditions are met, the frequency is reduced on the basis of the first dehumidifying mode, the output of cold energy is reduced, and the condition that the comfort of a user is influenced by overlarge temperature change in the dehumidifying process is avoided.

Further optionally, as shown in the control flowchart of fig. 2, after the air conditioner enters the second dehumidification mode, the real-time outdoor environment temperature T is determined_{Outer ring}Indoor ambient temperature T_{Inner ring}With a user-set temperature T_{Setting up}The difference between corrects for compressor frequency, including:

compressor operating frequency F in first dehumidification mode_{Dehumidification mode 1}On the basis of the frequency of the compressor, the operation frequency F of the compressor is corrected, and F is satisfied_{Dehumidification mode 1}-ΔF1；

And controlling the compressor to operate according to the corrected frequency.

First correction value Δ F1 and current indoor ambient temperature T in this embodiment_{Inner ring}And a user-set temperature T_{Setting up}And the outdoor ambient temperature T_{Outer ring}It is related. The larger the temperature difference is, the smaller the first correction value Δ F1 is, and in order to ensure the indoor environment temperature, the larger the temperature difference is, the smaller the first correction value Δ F1 is, the smaller the frequency reduction amplitude is, and the smaller the evaporator temperature rise amplitude is; the higher the outdoor environment temperature is, the smaller the value of the first correction value delta F1 is, and the smaller the amplitude of frequency reduction is, so that the indoor environment temperature is ensured

Further optionally, according to the current indoor ambient temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}To determine a first correction value for the compressor, Δ F1, comprising

According to the current indoor environment temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}Determining the current indoor ambient temperature T according to the second preset corresponding relation with the first correction value_{Inner ring}And a user-set temperature T_{Setting up}The temperature difference of (a) is in a first temperature difference range in a second preset corresponding relation, and the current outdoor environment temperature T_{Outer ring}A second temperature range in a second preset corresponding relationship;

determining a first correction value corresponding to the first temperature difference range and the second temperature range, wherein the first correction value is the current indoor environment temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), current outdoor ambient temperature T_{Outer ring}The first correction value Δ F1 corresponding to the second predetermined correspondence relationship.

In some embodiments, the second preset corresponding relationship is a corresponding relationship shown in table two, and the second preset corresponding relationship is stored in a controller of the air conditioner and is obtained according to the obtained current indoor environment temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}And obtaining the corresponding target evaporator temperature in a table look-up mode.

Table two: second predetermined corresponding relationship

Further optionally, the second preset corresponding relationship includes a first temperature difference range in which the temperature difference values sequentially increase and a second temperature range in which the temperature values sequentially increase;

and the first correction values corresponding to the temperature ranges in which the plurality of second temperature values sequentially increase progressively are sequentially decreased progressively.

In table two, Y3 is greater than Y2 is greater than Y1, the higher the outdoor environment temperature is, the smaller the value of Δ F1 is, the smaller the frequency reduction amplitude is, the smaller the evaporator temperature rise amplitude is, and the better indoor temperature reduction effect is ensured under the condition of higher outdoor environment temperature; b1 is more than b2, the larger the temperature difference is, the smaller the value of delta F1 is, the smaller the frequency reduction amplitude is, the smaller the temperature rise amplitude of the evaporator is, and the indoor environment temperature is ensured.

Further optionally, as shown in the control flow chart of fig. 2, the relative humidity RH and the indoor ambient temperature T of the current indoor environment_{Outer ring}With a user-set temperature T_{Setting up}When the difference value meets a third preset condition, the second dehumidification mode is exited to enter a third dehumidification mode, which comprises

And when any one of the two conditions is not met, the third dehumidification mode is not entered, and the second dehumidification mode is continuously operated.

The third dehumidification mode is set in this embodiment to correct the frequency of the compressor downwards according to the frequency of the normal refrigeration mode when the indoor environment temperature is close to the set temperature and the humidity is low to achieve the dehumidification effect, so as to maintain the load of the room and ensure the current room state. And the third dehumidification mode is only entered when the two conditions meet the requirements, so that the comfort of the environment is maintained.

Further optionally, as shown in the control flow chart of fig. 2, after the air conditioner enters the third dehumidification mode, the frequency of the compressor is corrected according to the frequency of the compressor required by the normal refrigeration mode, including

compressor operating frequency F in normal cooling mode_{Normal refrigeration}On the basis of the frequency of the compressor, the operation frequency F of the compressor is corrected, and F is satisfied_{Normal refrigeration}- Δ F2; power F in cooling mode_{Normal refrigeration}The power value in the air conditioner refrigeration mode memorized before is taken as a default value or directly.

And controlling the compressor to operate according to the corrected frequency.

In this embodiment, when the indoor environment temperature is close to the set temperature, the frequency of the normal refrigeration operation of the compressor is not suitable for the current room load, which may cause the excessive dehumidification of the room humidity due to further reduction, so that the frequency of the compressor needs to be corrected downward at the frequency of the normal refrigeration mode to maintain the load of the room, and ensure the current room state. Second correction value Δ F2 and indoor ambient temperature T in this embodiment_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}In relation to the above, the larger the temperature difference is, the smaller the second correction value Δ F2 is, the smaller the frequency reduction amplitude is, and the smaller the evaporator temperature rise amplitude is, so as to ensure the temperature control effect. The higher the outdoor environment temperature is, the smaller the second correction value delta F2 value is, the smaller the frequency reduction amplitude is, and the smaller the evaporator temperature rise amplitude is, so that the better temperature control effect in the room is ensured under the condition of higher outdoor temperature.

Further optionally, according to the current indoor ambient temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}To determine a second correction value for the compressor, Δ F2, comprising

According to the current indoor environment temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}Determining the current indoor ambient temperature T according to the third preset corresponding relation with the second correction value_{Inner ring}And a user-set temperature T_{Setting up}The second temperature difference range of the temperature difference in the third preset corresponding relation and the current outdoor environment temperature T_{Outer ring}A third temperature range in a third preset correspondence;

determining a second correction value corresponding to the second temperature difference range and the third temperature range, wherein the second correction value is the current indoor environment temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), current outdoor ambient temperature T_{Outer ring}And a second correction value Δ F2 corresponding to the third predetermined correspondence relationship.

In some embodiments, the third preset corresponding relationship is a corresponding relationship shown in table three, and the third preset corresponding relationship is stored in a controller of the air conditioner and is obtained according to the obtained current indoor environment temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}And obtaining the corresponding target evaporator temperature in a table look-up mode.

Table three: third predetermined corresponding relationship

second positive values corresponding to second temperature difference ranges with the plurality of temperature difference values increasing sequentially decrease sequentially;

and the second correction value corresponding to the third temperature range in which the temperature values are sequentially increased is sequentially decreased.

In the third table, K3 is more than K2 is more than K1, the higher the outdoor temperature is, the smaller the value of delta F2 is, the smaller the amplitude of frequency reduction is, the smaller the amplitude of temperature rise of the evaporator is, and the better temperature control effect is ensured indoors under the condition of higher outdoor temperature; c1 is more than c2, the larger the temperature difference is, the smaller the value of delta F2 is, the smaller the frequency reduction amplitude is, the smaller the temperature rise amplitude of the evaporator is, and the temperature control effect is ensured.

Embodiments also provide a control apparatus comprising one or more processors and a non-transitory computer-readable storage medium storing program instructions, the one or more processors being configured to implement a method according to any one of the preceding claims when the program instructions are executed by the one or more processors.

The present embodiments also propose a non-transitory computer-readable storage medium having stored thereon program instructions which, when executed by one or more processors, are used to implement a method according to any of the above.

The present embodiment also proposes an air conditioner that employs the method of any one of the above, or includes the above control device, or has the above non-transitory computer-readable storage medium.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A dehumidification method of an air conditioner is characterized by comprising the following steps,

receiving a dehumidification instruction;

after the air conditioner enters a first dehumidification mode, according to the real-time evaporator temperature T_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}Until the current indoor ambient temperature T_{Inner ring}With a user-set temperature T_{Setting up}The difference between the first and second humidity values and the relative humidity RH of the current indoor environment meet a second preset condition, and the first dehumidification mode is exited to enter a second dehumidification mode;

2. The dehumidifying method as claimed in claim 1, wherein the determining of the current outdoor ambient temperature T_{Outer ring}User-set temperature T_{Setting up}Temperature T of indoor environment_{Inner ring}Whether the temperature difference and the relative humidity RH of the indoor environment meet a first preset condition or not; when the first preset condition is judged to be met, the air conditioner is enabled to enter a first dehumidification mode, which comprises

3. The dehumidification method of claim 2, wherein the air conditioner enters the first dehumidification mode and then performs the first dehumidification mode according to a real-time evaporator temperature T_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}Controlling the compressor frequency by a difference comprising:

Comparing the current evaporator real-time temperature T_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}According to the comparison result, the running frequency of the compressor is adjusted to ensure that the evaporator has real-time temperature T_{Real-time inner tube}Within the optimal temperature difference range.

4. The dehumidifying method of claim 3, wherein the current indoor ambient temperature T is used as the basis_{Inner ring}And the current indoor relative humidity RH to determine the target evaporator temperature T_{Target inner tube}Comprises that

5. The dehumidifying method of claim 4, wherein in the first predetermined correspondence, the target evaporator temperature is related to an air dew point temperature.

6. The dehumidifying method of claim 5, wherein the first predetermined correspondence relationship includes a first temperature range in which a plurality of temperature values sequentially increase and a humidity range in which a plurality of relative humidity values sequentially increase;

7. The dehumidifying method of any one of claims 3 to 6 wherein the comparison of the current evaporator real-time temperature T is performed_{Real-time inner tube}With target evaporator temperature T_{Target inner tube}According to the comparison result, the running frequency of the compressor is adjusted to ensure that the evaporator has real-time temperature T_{Real-time inner tube}Within an optimum temperature difference range, including

when the following conditions are satisfied: t is_{Real-time inner tube}＞T_{Target inner tube}+ set value, controlling the compressor to raise frequency untilUntil the compressor frequency rises to a maximum frequency.

8. The dehumidifying method of claim 1, wherein the current indoor ambient temperature T is set to be lower than the current indoor ambient temperature T_{Inner ring}With a user-set temperature T_{Setting up}The difference between the first and second humidity levels and the relative humidity RH of the current indoor environment satisfy a second predetermined condition, and the first dehumidification mode is exited to enter a second dehumidification mode, which includes

9. The dehumidifying method of claim 8 wherein the air conditioner enters the second dehumidifying mode according to a real-time outdoor ambient temperature T_{Outer ring}Indoor ambient temperature T_{Inner ring}With a user-set temperature T_{Setting up}The difference between corrects for compressor frequency, including:

And controlling the compressor to operate according to the corrected frequency.

10. The dehumidifying method of claim 9, wherein the current indoor ambient temperature T is used as the basis of the current indoor ambient temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}To determine a first correction value for the compressor, Δ F1, comprising

11. The dehumidification method of an air conditioner according to claim 10, wherein the second preset correspondence includes a first temperature difference range in which a plurality of temperature difference values sequentially increase and a second temperature range in which a plurality of temperature values sequentially increase;

12. The dehumidifying method of claim 1, wherein the relative humidity RH and the indoor ambient temperature T of the current indoor environment are set to_{Outer ring}With a user-set temperature T_{Setting up}When the difference value meets a third preset condition, the second dehumidification mode is exited to enter a third dehumidification mode, which comprises

13. The method of claim 12, wherein the step of modifying the compressor frequency according to the compressor frequency required in the normal cooling mode after the air conditioner enters the third dehumidification mode comprises

And controlling the compressor to operate according to the corrected frequency.

14. The dehumidifying method of claim 13, wherein the current indoor ambient temperature T is used as the basis of the current indoor ambient temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), outdoor ambient temperature T_{Outer ring}To determine a second correction value for the compressor, Δ F2, comprising

determining that the temperature difference corresponds to both the second temperature difference range and the first temperature difference rangeA second correction value of the three temperature ranges, wherein the second correction value is the current indoor environment temperature T_{Inner ring}And a user-set temperature T_{Setting up}Temperature difference of (1), current outdoor ambient temperature T_{Outer ring}And a second correction value Δ F2 corresponding to the third predetermined correspondence relationship.

15. The dehumidifying method of claim 14, wherein the third predetermined correspondence relationship comprises a second temperature difference range in which a plurality of temperature difference values sequentially increase and a third temperature range in which a plurality of temperature values sequentially increase;

16. A control apparatus comprising one or more processors and a non-transitory computer-readable storage medium storing program instructions which, when executed by the one or more processors, are operable to implement the method of any one of claims 1-15.

17. A non-transitory computer-readable storage medium having stored thereon program instructions which, when executed by one or more processors, are to implement the method of any one of claims 1-15.

18. An air conditioner, characterized in that it employs the method of any one of claims 1-15, or comprises the control device of claim 16, or has a non-transitory computer-readable storage medium according to claim 17.