CN107676921B

CN107676921B - Air conditioner and humidity control method and device thereof

Info

Publication number: CN107676921B
Application number: CN201710818925.0A
Authority: CN
Inventors: 赵方亮; 席战利; 刘军; 张博博; 陈蒙; 姚晓波
Original assignee: Midea Group Co Ltd; Guangdong Midea Refrigeration Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2017-09-12
Filing date: 2017-09-12
Publication date: 2020-02-04
Anticipated expiration: 2037-09-12
Also published as: CN107676921A

Abstract

The invention discloses an air conditioner and a humidity control method and device thereof, wherein the method comprises the following steps: in the process that the air conditioner operates in a refrigeration mode, if the current indoor environment humidity is not in a preset humidity range and a throttling element exists in the air conditioner, the current indoor and outdoor environment temperature is obtained, and the opening degree regulating quantity of the throttling element, the indoor rotating speed regulating quantity of an indoor fan and the outdoor rotating speed regulating quantity of an outdoor fan are obtained according to the current indoor and outdoor environment temperature and the current indoor environment humidity; and controlling the current running frequency of the compressor to be kept unchanged, and adjusting at least two of the throttling element, the indoor fan and the outdoor fan according to the opening degree adjustment quantity, the indoor rotating speed adjustment quantity and the outdoor rotating speed adjustment quantity so as to enable the current indoor environment humidity to be within a preset humidity range. The method can effectively improve the latent heat sensible heat ratio of the air conditioner during refrigeration, thereby improving the comfort of indoor air.

Description

Air conditioner and humidity control method and device thereof

Technical Field

The invention relates to the technical field of air conditioners, in particular to a humidity control method of an air conditioner, a humidity control device of the air conditioner and the air conditioner with the humidity control device.

Background

Humidity, cleanliness and temperature are three important indexes for measuring the comfort of a room, and among the three important indexes, the humidity is often ignored by the public, but in fact, the influence of the humidity on the health of a human body is very large.

In summer, indoor outdoor ambient temperature is higher, and often relative humidity is also great, opens the back of refrigeration mode when the user, because the surface temperature of evaporimeter is less than the dew point temperature of indoor air in the air conditioner, so the air conditioner can be separated out the moisture condensation in the indoor air at cryogenic in-process to lead to the relative humidity of indoor air to descend, and then make the indoor air appear dryly.

At present, in order to control room humidity, a user generally purchases a humidifier to increase indoor relative humidity, so that room comfort is improved, but due to the limitation of the structure and the humidifying principle of the humidifier, the humidifying effect and the humidifying cleanliness cannot meet higher requirements.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first object of the present invention is to provide a humidity control method for an air conditioner, which can adjust the latent heat sensible heat ratio of the air conditioner by adjusting the opening degree of a throttling element, the rotating speed of an indoor fan and the rotating speed of an outdoor fan, so as to control the relative humidity of the indoor air, thereby effectively improving the comfort of the indoor air.

A second object of the invention is to propose a computer-readable storage medium. A third object of the present invention is to provide a humidity control apparatus for an air conditioner. A fourth object of the present invention is to provide an air conditioner.

In order to achieve the above object, a humidity control method for an air conditioner according to an embodiment of a first aspect of the present invention includes: acquiring the current indoor environment humidity in the process of operating the air conditioner in a refrigeration mode; judging whether the current indoor environment humidity is within a preset humidity range; if the current indoor environment humidity is not in the preset humidity range, further judging whether a throttling element exists in the air conditioner or not; if the throttling element exists in the air conditioner, acquiring the current outdoor environment temperature and the current indoor environment temperature, and acquiring the opening degree regulating quantity of the throttling element, the indoor rotating speed regulating quantity of an indoor fan and the outdoor rotating speed regulating quantity of an outdoor fan according to the current outdoor environment temperature, the current indoor environment temperature and the current indoor environment humidity; and controlling the current running frequency of a compressor in the air conditioner to be kept unchanged, and adjusting at least two of the throttling element, the indoor fan and the outdoor fan according to the opening degree adjusting quantity, the indoor rotating speed adjusting quantity and the outdoor rotating speed adjusting quantity so as to enable the current indoor environment humidity to be within the preset humidity range.

According to the humidity control method of the air conditioner, in the process that the air conditioner operates in a refrigeration mode, if the current indoor environment humidity is not in the preset humidity range and a throttling element exists in the air conditioner, the current outdoor environment temperature and the current indoor environment temperature are obtained, the opening degree adjusting quantity of the throttling element, the indoor rotating speed adjusting quantity of an indoor fan and the outdoor rotating speed adjusting quantity of the outdoor fan are obtained according to the current outdoor environment temperature, the current indoor environment temperature and the current indoor environment humidity, then the current operating frequency of a compressor in the air conditioner is controlled to be kept unchanged, and at least two of the throttling element, the indoor fan and the outdoor fan are adjusted according to the opening degree adjusting quantity, the indoor rotating speed adjusting quantity and the outdoor rotating speed adjusting quantity, so that the current indoor environment humidity is in the preset humidity range. The method can adjust the latent heat sensible heat ratio of the air conditioner refrigeration by adjusting the opening of the throttling element, the rotating speed of the indoor fan and the rotating speed of the outdoor fan, further control the relative humidity of the indoor air and effectively improve the comfort of the indoor air.

According to an embodiment of the present invention, if the throttling element is not present in the air conditioner, a frequency adjustment amount of the compressor is acquired according to the current outdoor ambient temperature, the current indoor ambient temperature, and the current indoor ambient humidity, and at least two of the compressor, the indoor fan, and the outdoor fan are adjusted according to the frequency adjustment amount, the indoor rotational speed adjustment amount, and the outdoor rotational speed adjustment amount.

According to one embodiment of the invention, if the current indoor environment humidity is greater than the upper limit value of the preset humidity range, the current opening degree of the throttling element is adjusted to be smaller by the opening degree adjusting amount; and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, the current opening of the throttling element is increased by the opening adjusting amount.

Further, the opening degree adjustment amount satisfies the following formula:

wherein,

for the amount of adjustment of the opening degree,

for a first opening adjustment amount, the

And the current indoor environment humidity

In a functional relationship, a (T)_out,T_in) A (T) for the second opening degree adjustment_out,T_in) With the current outdoor ambient temperature T_outAnd the current indoor ambient temperature T_inIs in a functional relationship.

According to an embodiment of the present invention, the indoor rotation speed adjustment amount includes a first indoor rotation speed adjustment amount and a second indoor rotation speed adjustment amount, wherein if the current indoor ambient humidity is greater than an upper limit value of the preset humidity range, the current rotation speed of the indoor fan is adjusted to be smaller than the first indoor rotation speed adjustment amount; and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, increasing the current rotating speed of the indoor fan by the second indoor rotating speed adjusting amount.

Further, the first indoor rotational speed adjustment amount and the second indoor rotational speed adjustment amount are obtained by the following formulas:

wherein, Δ N_n1For said first indoor speed adjustment, Δ N_n2For the second indoor rotational speed adjustment amount,

the ratio is adjusted for the first indoor rotational speed,

for a second indoor rotational speed, said

And said

Respectively corresponding to the current indoor environment humidity

In a functional relationship, said

And said

All the values of (A) are in the range of 0-1, N_n0The rotating speed of the indoor fan is adjusted.

According to an embodiment of the present invention, the outdoor rotation speed adjustment amount includes a first outdoor rotation speed adjustment amount, wherein if the current indoor environment humidity is greater than an upper limit value of the preset humidity range, the current rotation speed of the outdoor fan is increased by the first outdoor rotation speed adjustment amount; and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, controlling the current rotating speed of the outdoor fan to be kept unchanged.

Further, the first outdoor rotational speed adjustment amount is obtained by the following formula:

wherein, Δ N_w1Is the first outdoor rotational speed adjustment amount,

for a first outdoor rotational speed, said

And the current indoor environment humidityIn a functional relationship, said

All the values of (A) are in the range of 0-1, N_w0The rotating speed of the outdoor fan is adjusted.

According to an embodiment of the present invention, if the current indoor ambient humidity is greater than the upper limit value of the preset humidity range, the current operating frequency of the compressor is increased by the frequency adjustment amount; and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, reducing the current running frequency of the compressor by the frequency regulating quantity.

Further, the frequency adjustment amount satisfies the following formula:

wherein,for the purpose of the amount of frequency adjustment,

for a first frequency adjustment amount, the

And the current indoor environment humidity

In a functional relationship, f (T)_out,T_in) For the second frequency adjustment amount, f (T)_out,T_in) With the current outdoor ambient temperature T_outAnd the current indoor ambient temperature T_inIs in a functional relationship.

To achieve the above object, a second embodiment of the present invention provides a computer-readable storage medium having instructions stored therein, wherein when the instructions are executed, the air conditioner performs the humidity control method.

According to the computer-readable storage medium provided by the embodiment of the invention, by executing the humidity control method, the latent heat sensible heat ratio of air conditioner refrigeration can be adjusted by adjusting the opening of the throttling element, the rotating speed of the indoor fan and the rotating speed of the outdoor fan, so that the relative humidity of indoor air is controlled, and the comfort of the indoor air is effectively improved.

In order to achieve the above object, a humidity control device of an air conditioner according to a third embodiment of the present invention includes: the first acquisition module is used for acquiring the current indoor environment humidity in the process that the air conditioner operates in a refrigeration mode; the judging module is used for judging whether the current indoor environment humidity is within a preset humidity range or not and further judging whether a throttling element exists in the air conditioner or not when the current indoor environment humidity is not within the preset humidity range; the second acquisition module is used for acquiring the current outdoor environment temperature and the current indoor environment temperature when the throttling element exists in the air conditioner, and acquiring the opening degree regulating quantity of the throttling element, the indoor rotating speed regulating quantity of the indoor fan and the outdoor rotating speed regulating quantity of the outdoor fan according to the current outdoor environment temperature, the current indoor environment temperature and the current indoor environment humidity; and the control module is connected with the second acquisition module and used for controlling the current operating frequency of a compressor in the air conditioner to be kept unchanged, and adjusting at least two of the throttling element, the indoor fan and the outdoor fan according to the opening degree adjusting quantity, the indoor rotating speed adjusting quantity and the outdoor rotating speed adjusting quantity so as to enable the current indoor environment humidity to be in the preset humidity range.

According to the humidity control device of the air conditioner, in the process that the air conditioner operates in the refrigeration mode, the current indoor environment humidity is obtained through the first obtaining module, whether the current indoor environment humidity is within the preset humidity range or not is judged through the judging module, and if not, whether a throttling element exists in the air conditioner is further judged. If yes, the current outdoor environment temperature and the current indoor environment temperature are obtained through the second obtaining module, and the opening degree regulating quantity of the throttling element, the indoor rotating speed regulating quantity of the indoor fan and the outdoor rotating speed regulating quantity of the outdoor fan are obtained according to the current outdoor environment temperature, the current indoor environment temperature and the current indoor environment humidity. And then, controlling the current running frequency of a compressor in the air conditioner to be kept unchanged through a control module, and adjusting at least two of the throttling element, the indoor fan and the outdoor fan according to the opening degree adjusting quantity, the indoor rotating speed adjusting quantity and the outdoor rotating speed adjusting quantity so as to enable the current indoor environment humidity to be within a preset humidity range. The device can adjust the latent heat sensible heat ratio of air conditioner refrigeration through adjusting the opening degree of the throttling element, the rotating speed of the indoor fan and the rotating speed of the outdoor fan, so that the relative humidity of indoor air is controlled, and the comfort of the indoor air is effectively improved.

According to an embodiment of the present invention, if the throttling element is not present in the air conditioner, the second obtaining module obtains a frequency adjustment amount of the compressor according to the current outdoor environment temperature, the current indoor environment temperature, and the current indoor environment humidity, and the control module adjusts at least two of the compressor, the indoor fan, and the outdoor fan according to the frequency adjustment amount, the indoor rotational speed adjustment amount, and the outdoor rotational speed adjustment amount.

According to one embodiment of the invention, if the current indoor environment humidity is greater than the upper limit value of the preset humidity range, the control module adjusts the current opening degree of the throttling element by the opening degree adjustment amount; and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, the control module increases the current opening of the throttling element by the opening adjustment amount.

Further, the opening degree adjustment amount satisfies the following formula:

wherein,

for the amount of adjustment of the opening degree,

for a first opening adjustment amount, the

And the current indoor environment humidity

According to an embodiment of the present invention, the indoor rotation speed adjustment amount includes a first indoor rotation speed adjustment amount and a second indoor rotation speed adjustment amount, wherein if the current indoor environment humidity is greater than an upper limit value of the preset humidity range, the control module adjusts the current rotation speed of the indoor fan by the first indoor rotation speed adjustment amount; and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, the control module increases the current rotating speed of the indoor fan by the second indoor rotating speed regulating quantity.

the ratio is adjusted for the first indoor rotational speed,

for a second indoor rotational speed, said

And said

Respectively corresponding to the current indoor environment humidity

In a functional relationship, said

And said

According to an embodiment of the present invention, the outdoor rotation speed adjustment amount includes a first outdoor rotation speed adjustment amount, wherein if the current indoor environment humidity is greater than an upper limit value of the preset humidity range, the control module increases the current rotation speed of the outdoor fan by the first outdoor rotation speed adjustment amount; and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, the control module controls the current rotating speed of the outdoor fan to be kept unchanged.

wherein, Δ N_w1Is the first outdoor rotational speed adjustment amount,

for a first outdoor rotational speed, said

And the current indoor environment humidity

In a functional relationship, said

According to an embodiment of the present invention, if the current indoor ambient humidity is greater than the upper limit value of the preset humidity range, the control module increases the current operating frequency of the compressor by the frequency adjustment amount; and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, the control module reduces the current running frequency of the compressor by the frequency regulating quantity.

Further, the frequency adjustment amount satisfies the following formula:

wherein,

for the purpose of the amount of frequency adjustment,

for a first frequency adjustment amount, the

And the current indoor environment humidity

In order to achieve the above object, a fourth aspect of the present invention provides an air conditioner, which includes the humidity control device.

According to the air conditioner provided by the embodiment of the invention, through the humidity control device, the latent heat sensible heat ratio of the refrigeration of the air conditioner can be adjusted by adjusting the opening of the throttling element, the rotating speed of the indoor fan and the rotating speed of the outdoor fan, so that the relative humidity of the indoor air is controlled, and the comfort of the indoor air is effectively improved.

Drawings

Fig. 1 is a flowchart of a humidity control method of an air conditioner according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an air conditioner according to an embodiment of the present invention;

fig. 3 is a flowchart of a humidity control method of an air conditioner according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a humidity control apparatus of an air conditioner according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A humidity control method of an air conditioner, a computer-readable storage medium, a humidity control apparatus of an air conditioner, and an air conditioner having the same according to embodiments of the present invention will be described with reference to the accompanying drawings.

Fig. 1 is a flowchart of a humidity control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 1, a humidity control method of an air conditioner according to an embodiment of the present invention may include the steps of:

and S1, acquiring the current indoor environment humidity during the operation of the air conditioner in the cooling mode.

Specifically, as shown in fig. 2, the air conditioner may include a compressor 1, a liquid storage tank 2, a four-way selector valve 3, an outdoor heat exchanger 4, an outdoor fan 5, a throttling element 6 (e.g., an electronic expansion valve/capillary tube), an indoor heat exchanger 7, and an indoor fan 8.

When the air conditioner operates in a refrigeration mode, high-temperature and high-pressure gaseous refrigerant from the compressor 1 flows to the outdoor heat exchanger 4 (also called a condenser in the refrigeration mode) through the four-way reversing valve 3, is changed into high-temperature and high-pressure liquid refrigerant after heat exchange by the outdoor heat exchanger 4, is changed into low-temperature and low-pressure liquid refrigerant after throttling by the throttling element 6, is changed into low-temperature and low-pressure gaseous refrigerant after heat exchange by the indoor heat exchanger 7 (also called an evaporator in the refrigeration mode), flows into the liquid storage tank 2, is subjected to gas-liquid separation by the liquid storage tank 2 and flows back to the compressor 1, and.

During the operation of the air conditioner in the cooling mode, the current indoor environment humidity can be obtained in real time through a humidity sensor (such as the humidity sensor 9 in fig. 2) arranged at the side of the indoor heat exchanger

And S2, judging whether the current indoor environment humidity is in a preset humidity range.

The preset humidity range is an optimum humidity range comfortable for a user, and may be set by the user through a remote controller or the like, and when the user does not set the humidity range, the preset humidity range may be a default humidity range in the air conditioner, or may be a humidity range corresponding to a target temperature set by the user (a temperature-humidity range correspondence table may be preset in the air conditioner to be obtained by table lookup).

And S3, if the current indoor environment humidity is not in the preset humidity range, further judging whether a throttling element exists in the air conditioner.

And S4, if the air conditioner has a throttling element, acquiring the current outdoor environment temperature and the current indoor environment temperature, and acquiring the opening degree regulating quantity of the throttling element, the indoor rotating speed regulating quantity of the indoor fan and the outdoor rotating speed regulating quantity of the outdoor fan according to the current outdoor environment temperature, the current indoor environment temperature and the current indoor environment humidity.

And S5, controlling the current operation frequency of the compressor in the air conditioner to be unchanged, and adjusting at least two of the throttling element, the indoor fan and the outdoor fan according to the opening degree adjustment quantity, the indoor rotating speed adjustment quantity and the outdoor rotating speed adjustment quantity so as to enable the current indoor environment humidity to be within a preset humidity range.

According to an embodiment of the present invention, if a throttling element is not present in the air conditioner, a frequency adjustment amount of the compressor is acquired according to a current outdoor ambient temperature, a current indoor ambient temperature, and a current indoor ambient humidity, and at least two of the compressor, the indoor fan, and the outdoor fan are adjusted according to the frequency adjustment amount, the indoor rotational speed adjustment amount, and the outdoor rotational speed adjustment amount.

In particular if the current indoor ambient humidityIf not, it indicates the current indoor environment humidity

Not meeting the requirement of user comfort, at the moment, the air conditioner is judged firstlyBecause some air conditioners are not provided with the throttling element 6 shown in fig. 2, in order to realize the universality of the control algorithm, the judgment is firstly carried out, and then the corresponding control strategy is executed according to the judgment result. For example, when a throttling element exists in the air conditioner, the opening degree of the throttling element, the rotating speed of an indoor fan and the rotating speed of an outdoor fan can be adjusted to adjust the latent heat sensible heat ratio (the relative proportion of the latent heat quantity and the sensible heat quantity) of air conditioner refrigeration, so that the relative humidity of indoor air is controlled, and the comfort requirement of a user is met; and when there is not throttling element in the air conditioner, the accessible is adjusted the operating frequency, indoor fan rotational speed and the outdoor fan rotational speed of compressor and is adjusted the refrigerated latent heat apparent heat ratio of air conditioner, and then the relative humidity of control room air satisfies user's travelling comfort demand.

For convenience of description, the adjustment of the opening degree of the throttling element, the rotation speed of the indoor fan, the rotation speed of the outdoor fan, and the operation frequency of the compressor will be specifically described below separately.

The opening degree adjustment process of the throttling element will be described in detail below.

In particular, when the current indoor ambient humidityWhen the temperature is not in the preset humidity range, the current outdoor environment temperature T can be obtained through the temperature sensor arranged on the side of the outdoor heat exchanger_outAnd acquiring the current indoor environment temperature T by a temperature sensor arranged at the side of the indoor heat exchanger_inThen according to the current outdoor ambient temperature T_outCurrent indoor ambient temperature T_inAnd the current indoor ambient humidity

Obtaining the opening degree regulating quantity of the throttling element

To adjust the amount according to the opening degree

The opening of the throttling element is adjusted.

According to one embodiment of the present invention, the opening degree adjustment amount satisfies the following formula (1):

wherein,

in order to adjust the opening degree, the opening degree is adjusted,is the first opening degree adjustment amount,

with the current indoor ambient humidity

In a functional relationship, a (T)_out,T_in) A (T) is a second opening degree adjustment amount_out,T_in) And the current outdoor environment temperature T_outAnd the current indoor ambient temperature T_inIs in a functional relationship.

Further, according to an embodiment of the present invention, the first opening degree adjustment amount may be obtained by the following formula (2):

the second opening degree adjustment amount is obtained by the following formula (3):

in particular, according to the current outdoor ambient temperature T_outCurrent indoor ambient temperature T_inAnd the current indoor ambient humidity

Obtaining the opening degree regulating quantity of the throttling element

According to the current indoor environment humidity

Obtaining a first opening degree regulating quantity

Simultaneously according to the current outdoor environment temperature T_outWith the current indoor ambient temperature T_inThe temperature difference therebetween obtains a second opening degree adjustment amount a (T)_out,T_in) Then, the two adjustment amounts are summed to obtain a final opening degree adjustment amount

Wherein the humidity is determined according to the current indoor environment

Obtaining a first opening degree regulating quantity

In this case, the ambient humidity in the room may be divided into a plurality of stages in advance, wherein each stage corresponds to one adjustment amount. Specifically, when the indoor environment humidity is divided into stages, the preset humidity range may be divided into one stage, and the corresponding adjustment amount is 0. For example, the indoor ambient humidity of 10% to 100% can be divided into three phases, wherein the first phase is

The corresponding adjustment amount is 5; the second stage is

The corresponding adjustment amount is 0; the third stage is

The corresponding adjustment amount is 10.

Further, when the preset humidity range is 45% -65%, the first stage is

The corresponding adjustment amount is 5; the second stage isThe corresponding adjustment amount is 0; the third stage is

The corresponding adjustment amount is 10, i.e. as shown in the above equation (2). In short, the higher the humidity is, the larger the adjustment amount is, the smaller the humidity is, the smaller the adjustment amount is, and the adjustment is not performed when the humidity is within the appropriate humidity range.

But according to the current outdoor ambient temperature T_outWith the current indoor ambient temperature T_inThe temperature difference therebetween obtains a second opening degree adjustment amount a (T)_out,T_in) In this case, the temperature difference between the outdoor ambient temperature and the indoor ambient temperature may be divided into a plurality of stages, where each stage corresponds to an adjustment amount. For example, the temperature difference may be divided into three phases, where the first phase is T_out-T_inThe corresponding regulating quantity is 0 at the temperature of less than or equal to 5 ℃; the second stage was 5 deg.C<T_out-T_inThe corresponding regulating quantity is 2 at the temperature of less than or equal to 10 ℃; the third stage is T_out-T_in>The corresponding adjustment amount is 5 at 10 c, as shown in the above equation (3). In short, the larger the temperature difference value is, the larger the adjustment amount is, and the smaller the temperature difference is, the smaller the adjustment amount is.

It should be noted that the above equations (2) and (3) are only exemplary, and the division of the specific stages and the setting of the adjustment amount may be set according to actual conditions.

The opening degree regulating quantity of the throttling element is obtained by the method

Then, the amount of adjustment is made according to the opening degree

The opening of the throttling element is adjusted. According to one embodiment of the invention, if the current indoor environment humidity is larger than the upper limit value of the preset humidity range, the current opening of the throttling element is adjusted to be smaller by the opening adjustment amount; and if the current indoor environment humidity is less than the lower limit value of the preset humidity range, the current opening of the throttling element is adjusted by an opening adjustment amount.

In particular if the current indoor ambient humidityGreater than the upper limit of the preset humidity range

The humidity in the room is higher, and then a high humidity control process is performed, that is, the opening degree of the throttling element is controlled to be smaller, and the adjusted opening degree of the throttling element

Wherein, a₀To adjust the opening of the front throttling element. Because the opening degree of the throttling element is reduced, the evaporation temperature of the indoor heat exchanger is reduced, and when the evaporation temperature is lower than the dew point temperature of indoor air, moisture in the air is condensed and separated out, so that the indoor humidity is reduced to reach the preset humidity range.

If the current indoor environment humidity

Less than the lower limit of the preset humidity range

The humidity in the room is low, and the low humidity control process is performed, that is, the opening degree of the throttling element is controlled to be increased, and the adjusted opening degree of the throttling element is controlled to be smaller

Because the opening degree of the throttling element is increased, the evaporation temperature of the indoor heat exchanger is increased, the latent heat ratio of the air conditioner is further improved, the occupation ratio of latent heat in refrigerating capacity is reduced, the reduction of dehumidification capacity is finally realized, and the indoor relative humidity is improved.

If the current indoor environment humidity

Greater than or equal to the lower limit value of the preset humidity range

And is less than or equal to the upper limit value of the preset humidity range

The opening of the restriction element is not adjusted, i.e. the opening a of the restriction element is controlled₀Remain unchanged.

Therefore, the latent heat sensible heat ratio of air conditioning refrigeration can be adjusted by adjusting the opening degree of the throttling element, so that the relative humidity of indoor air is controlled, and the comfort of the indoor air is effectively improved.

The rotation speed adjustment process of the indoor fan will be described in detail below.

According to one embodiment of the present invention, the indoor rotation speed adjustment amount includes a first indoor rotation speed adjustment amount and a second indoor rotation speed adjustment amount, wherein if the current indoor ambient humidity is greater than an upper limit value of a preset humidity range, the current rotation speed of the indoor fan is adjusted to be smaller than the first indoor rotation speed adjustment amount; and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, increasing the current rotating speed of the indoor fan by a second indoor rotating speed regulating quantity.

In particular if the current indoor ambient humidity

Greater than the upper limit of the preset humidity range

The current indoor humidity is higher, and at the moment, the evaporation temperature of the indoor heat exchanger can be reduced by reducing the rotating speed of the indoor fan, so that the evaporation temperature of the indoor heat exchanger is lower than the dew point temperature of the indoor air, and moisture in the air is condensed and separated out, so that the indoor humidity is reduced; if the current indoor environment humidityLess than the lower limit of the preset humidity range

The current indoor humidity is low, the evaporation temperature of the indoor heat exchanger can be increased by increasing the rotating speed of the indoor fan, sensible heat exchange is mainly conducted on the side of the indoor heat exchanger, the latent heat ratio of the air conditioner is further improved, the occupation ratio of latent heat in refrigerating capacity is reduced, and the reduction of the dehumidification capacity is finally achieved.

Wherein, when the rotating speed of the indoor fan is adjusted, the current indoor environment humidity can be adjusted

And acquiring a first indoor rotating speed regulating quantity when the rotating speed is reduced and a second indoor rotating speed regulating quantity when the rotating speed is increased.

According to an embodiment of the present invention, the first indoor rotational speed adjustment amount and the second indoor rotational speed adjustment amount may be obtained by the following formula (4):

wherein, Δ N_n1For a first indoor rotational speed adjustment, Δ N_n2Is the second indoor rotational speed adjustment amount,

the ratio is adjusted for the first indoor rotational speed,

is a second chamberThe internal rotation speed is adjusted in proportion,

and

respectively corresponding to the current indoor environment humidity

In a functional relationship with each other, the first and second,

and

all the values of (A) are in the range of 0-1, N_n0To adjust the rotation speed of the blower in the front chamber.

Further, according to an embodiment of the present invention, the first indoor rotation speed adjustment ratio may be obtained by the following formula (5):

the second indoor rotation speed adjustment ratio is obtained by the following equation (6):

in particular, according to the current indoor ambient humidity

Obtaining a first indoor rotating speed regulating quantity delta N_n1And a second indoor rotational speed adjustment amount DeltaN_n2In the method, the indoor environment humidity can be divided into a plurality of stages, wherein each stage corresponds to one regulation ratio. Specifically, when the indoor environment humidity is divided into stages, the preset humidity range may be divided into one stage, and the corresponding adjustment ratio is 0. For example, the indoor environment humidity of 0% -100% can be divided into four stages, wherein the first stage is

The corresponding adjustment ratio is 0; the second stage is

The corresponding adjustment ratio is 0.75; the third stage is

The corresponding adjustment ratio is 0; the fourth stage is

The corresponding adjustment ratio was 0.75. Wherein the first and second phases are used for the process of increasing the rotation speed, and the third and fourth phases are used for the process of decreasing the rotation speed.

Further, when the preset humidity range is 45% -65%, the first stage is

The corresponding adjustment ratio is 0; the second stage is

The corresponding control ratio is 0.75, and the first and second phases are used for the speed increase process, i.e. as indicated in the above equation (6); the third stage is

The corresponding adjustment coefficient is 0; the fourth stage is

The corresponding adjustment ratio is 0.75, as shown in the above equation (5). In short, the adjustment is not performed when the humidity is in the proper humidity range and the humidity is small, and the adjustment is performed when the humidity is large and small, and the adjustment ratio may be the same.

Obtaining the first indoor rotation speed regulation ratio

And a second indoor rotational speed adjustment ratioThen, the ratio is compared with the current rotating speed N of the indoor fan_n0(i.e., adjusting the rotational speed of the front indoor fan) to obtain a first indoor rotational speed adjustment amount deltan_n1And a second indoor rotational speed adjustment amount DeltaN_n2Then adjusting the amount of Δ N according to the first indoor rotation speed_n1And a second indoor rotational speed adjustment amount DeltaN_n2And adjusting the rotating speed of the indoor fan.

In particular, if the current indoor ambient humidity

Greater than the upper limit of the preset humidity range

The humidity in the room is higher, and then the high humidity control process is performed, that is, the rotation speed of the indoor fan is reduced and controlled, and the rotation speed of the indoor fan after adjustment is controlledBecause the rotational speed of indoor fan reduces for the evaporating temperature of indoor heat exchanger reduces, when evaporating temperature is less than the dew point temperature of indoor air, the moisture condensation in the air is appeared, thereby makes indoor humidity descend, in order to reach and predetermine the humidity range.

If the current indoor environment humidity

Less than the lower limit of the preset humidity range

The current indoor humidity is lower, and then the low humidity control process is started, namely, the rotating speed of the indoor fan is controlled to be increased, and the rotating speed of the indoor fan after adjustment is controlled

Because the rotating speed of the indoor fan is increased, the evaporation temperature of the indoor heat exchanger is increased, the side heat exchange of the indoor heat exchanger mainly adopts sensible heat exchange, the latent heat ratio of the air conditioner is further improved, the occupation ratio of latent heat in refrigerating capacity is reduced, and the reduction of dehumidification capacity is finally realized. In which the indoor relative humidity is increased because the indoor temperature is lowered without much change in the indoor absolute moisture content.

If the current indoor environment humidityGreater than or equal to the lower limit value of the preset humidity range

And is less than or equal to the upper limit value of the preset humidity range

The rotating speed of the indoor fan is not adjusted, namely the rotating speed N of the indoor fan is controlled_n0Remain unchanged.

Therefore, the latent heat sensible heat ratio of the air conditioner refrigeration can be adjusted by adjusting the rotating speed of the indoor fan, so that the relative humidity of the indoor air is controlled, and the comfort of the indoor air is effectively improved.

The rotation speed adjusting process of the outdoor fan will be described in detail below.

According to one embodiment of the present invention, the outdoor rotation speed adjustment amount includes a first outdoor rotation speed adjustment amount, wherein if the current indoor ambient humidity is greater than an upper limit value of a preset humidity range, the current rotation speed of the outdoor fan is adjusted by the first outdoor rotation speed adjustment amount; and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, controlling the current rotating speed of the outdoor fan to be kept unchanged.

In particular if the current indoor ambient humidity

Greater than the upper limit of the preset humidity rangeThe current indoor humidity is higher, and at the moment, the evaporation temperature of the indoor heat exchanger can be reduced by increasing the rotating speed of the outdoor fan, so that the evaporation temperature of the indoor heat exchanger is lower than the dew point temperature of indoor air, and moisture in the air is condensed and separated out, so that the indoor humidity is reduced; if the current indoor environment humidity

Less than the lower limit of the preset humidity range

The current indoor humidity is low, the evaporating temperature of the indoor heat exchanger can be increased by reducing the rotating speed of the outdoor fan, sensible heat exchange is mainly conducted on the side of the indoor heat exchanger, the latent heat ratio of the air conditioner is further improved, the occupation ratio of latent heat in refrigerating capacity is reduced, and the reduction of the dehumidification capacity is finally achieved.

Wherein, when the rotating speed of the outdoor fan is adjusted, the humidity of the current indoor environment can be adjusted

And acquiring a first outdoor rotating speed regulating quantity when the rotating speed is increased and a second outdoor rotating speed regulating quantity when the rotating speed is reduced.

According to an embodiment of the present invention, the first outdoor rotational speed adjustment amount may be obtained by the following formula (7):

wherein, Δ N_w1Is the first outdoor rotational speed adjustment amount,

the ratio is adjusted for the first outdoor rotational speed,

with the current indoor ambient humidity

In a functional relationship with each other, the first and second,

all the values of (A) are in the range of 0-1, N_w0The rotating speed of the front outdoor fan is adjusted.

Further, according to an embodiment of the present invention, the first outdoor rotational speed adjustment ratio may be obtained by the following equation (8):

according to an embodiment of the present invention, the second outdoor rotational speed adjustment amount may be obtained by the following equation (9):

wherein, Δ N_w2Is the second outdoor rotational speed adjustment amount,

the ratio is adjusted for the second outdoor rotational speed,

with the current indoor ambient humidityIn a functional relationship with each other, the first and second,

the value range of (1) is 0-1.

Further, according to an embodiment of the present invention, the second outdoor rotational speed adjustment ratio may be obtained by the following equation (10):

in particular, according to the current indoor ambient humidity

Obtaining a first outdoor rotating speed regulating quantity delta N_w1And a second outdoor rotational speed adjustment amount DeltaN_w2In the method, the indoor environment humidity can be divided into a plurality of stages, wherein each stage corresponds to one regulation ratio. Specifically, when the indoor environment humidity is divided into stages, the preset humidity range may be divided into one stage, and the corresponding adjustment ratio is 0. For example, the indoor ambient humidity of 0% to 100% can be divided into five stages, wherein the first stage is

The corresponding adjustment ratio is 0.5; the second stage is

The corresponding adjustment ratio is 0.3; the third stage is

The corresponding adjustment ratio is 0; the fourth stage is

The corresponding adjustment ratio is 0.15; the fifth stage is

The corresponding adjustment ratio is 0.3. The first stage and the second stage are used for the process of rotating speed reduction, and the third stage to the fifth stage are used for the process of rotating speed increase.

Further, when the preset humidity range is 45% -65%, the first stage is

The corresponding adjustment ratio is 0; the second stage is

The corresponding regulation ratio is 0.3 and the first and second phases are used for the speed reduction process, i.e. as indicated by the above equation (10); the third stage is

The corresponding adjustment coefficient is 0; the fourth stage is

The corresponding adjustment ratio is 0.15; the fifth stage is

The corresponding adjustment ratio is 0.3, i.e., as shown in the above equation (8). In short, no adjustment is made when the humidity is within the proper humidity range, and adjustment is made when the humidity is greater and lesser, and the adjustment ratio can be further differentiated.

Obtaining a first outdoor rotation speed regulation ratio

And a second outdoor rotation speed regulation ratio

Then, the ratio is compared with the current rotating speed N of the outdoor fan_w0(i.e., adjusting the rotation speed of the front outdoor fan) to obtain a first outdoor rotation speed adjustment amount deltaN_w1And a second outdoor rotational speed adjustment amount DeltaN_w2Then adjusting the quantity delta N according to the first outdoor rotating speed_w1And a second outdoor rotational speed adjustment amount DeltaN_w2And adjusting the rotating speed of the outdoor fan.

In particular, if the current indoor ambient humidity

Greater than the upper limit of the preset humidity rangeThe humidity in the room is higher, and then the high humidity control process is performed, that is, the outdoor fan is rotatedAnd (4) carrying out speed increasing control, and controlling the current running frequency of the compressor to be kept unchanged. Wherein the adjusted rotating speed of the outdoor fan

Because the rotational speed of outdoor fan risees for the evaporating temperature of indoor heat exchanger reduces, when evaporating temperature is less than the dew point temperature of indoor air, the moisture condensation in the air is appeared, thereby makes indoor humidity descend, in order to reach preset humidity range.

If the current indoor environment humidity

Less than the lower limit of the preset humidity rangeAnd then, the current indoor humidity is low, and the low humidity control process is started, namely, the rotating speed of the outdoor fan is reduced and controlled, and the current running frequency of the compressor is controlled to be kept unchanged. Wherein the adjusted rotating speed of the outdoor fan

Because the rotating speed of the outdoor fan is reduced, the evaporation temperature of the indoor heat exchanger is increased, the side heat exchange of the indoor heat exchanger mainly adopts sensible heat exchange, the latent heat ratio of the air conditioner is further improved, the occupation ratio of latent heat in refrigerating capacity is reduced, and the reduction of dehumidification capacity is finally realized. In which the indoor relative humidity is increased because the indoor temperature is lowered without much change in the indoor absolute moisture content.

If the current indoor environment humidity

Greater than or equal to the lower limit value of the preset humidity range

And is less than or equal to the upper limit value of the preset humidity rangeThe rotating speed N of the outdoor fan is controlled without adjusting the rotating speed of the outdoor fan_w0Remain unchanged.

Therefore, the latent heat sensible heat ratio of the air conditioner refrigeration can be adjusted by adjusting the rotating speed of the outdoor fan, so that the relative humidity of the indoor air is controlled, and the comfort of the indoor air is effectively improved.

The adjustment process of the operating frequency of the compressor will be described in detail below.

Obtaining the frequency adjustment of compressor in air conditioner

To adjust the amount according to the frequency

The operating frequency of the compressor is adjusted.

According to an embodiment of the present invention, the frequency adjustment amount satisfies the following formula (11):

wherein,

in order to adjust the amount of frequency,

in order to adjust the amount of the first frequency,

with the current indoor ambient humidity

In a functional relationship, f (T)_out,T_in) Is the second frequency adjustment, f (T)_out,T_in) And the current outdoor environment temperature T_outAnd the current indoor ambient temperature T_inIs in a functional relationship.

Further, according to an embodiment of the present invention, the first frequency adjustment amount may be obtained by the following formula (12):

the second frequency adjustment amount is obtained by the following equation (13):

Obtaining the frequency adjustment of compressor in air conditioner

According to the current indoor environment humidity

Obtaining a first frequency adjustment

Simultaneously according to the current outdoorAmbient temperature T_outWith the current indoor ambient temperature T_inThe temperature difference therebetween obtains a second frequency adjustment f (T)_out,T_in) Then the two adjustments are summed to obtain a final frequency adjustment

Wherein the humidity is determined according to the current indoor environment

Obtaining a first frequency adjustment

The corresponding regulating quantity is 5 Hz; the second stage is

The corresponding adjustment amount is 0; the third stage is

The corresponding adjustment amount is 10 Hz.

Further, when the preset humidity range is 45% -65%, the first stage is

The corresponding regulating quantity is 5 Hz; the second stage is

The corresponding adjustment amount is 0; the third stage is

The corresponding adjustment amount is 10Hz, i.e. as shown in the above equation (12). In short, the higher the humidity is, the larger the adjustment amount is, the smaller the humidity is, the smaller the adjustment amount is, and the adjustment is not performed when the humidity is within the appropriate humidity range.

But according to the current outdoor ambient temperature T_outWith the current indoor ambient temperature T_inThe temperature difference therebetween obtains a second frequency adjustment f (T)_out,T_in) In this case, the temperature difference between the outdoor ambient temperature and the indoor ambient temperature may be divided into a plurality of stages, where each stage corresponds to an adjustment amount. For example, the temperature difference may be divided into three phases, where the first phase is T_out-T_inThe corresponding regulating quantity is 0 at the temperature of less than or equal to 5 ℃; the second stage was 5 deg.C<T_out-T_inThe corresponding regulating quantity is 2Hz at the temperature of less than or equal to 10 ℃; the third stage is T_out-T_in>The adjustment amount is 5Hz at 10 ℃ as shown in the above equation (13). In short, the larger the temperature difference value is, the larger the adjustment amount is, and the smaller the temperature difference is, the smaller the adjustment amount is.

It should be noted that the above equations (12) and (13) are merely exemplary, and the division of the specific stages and the setting of the adjustment amount may be set according to actual conditions.

Obtaining the frequency adjustment quantity of the compressor by the methodThen, the amount is adjusted according to the frequency

The operating frequency of the compressor is adjusted. According to one embodiment of the present invention, if the current indoor environment humidity is greater than the upper limit value of the preset humidity range, the current operation frequency of the compressor is increased by a frequency adjustment amount; and if the current indoor environment humidity is less than the lower limit value of the preset humidity range, reducing the current running frequency of the compressor by the frequency regulating quantity.

In particular, asFruit current indoor environment humidityGreater than the upper limit of the preset humidity range

It means that the humidity in the room is higher, and then a high humidity control process is performed, i.e. the operation frequency of the compressor is controlled to be increased, for example, the operation frequency of the compressor after adjustment

Wherein f is₀To adjust the operating frequency of the front compressor. The running frequency of the compressor is increased, so that the evaporation temperature of the indoor heat exchanger is reduced, and when the evaporation temperature is lower than the dew point temperature of indoor air, moisture in the air is condensed and separated out, so that the indoor humidity is reduced to reach the preset humidity range.

If the current indoor environment humidity

Less than the lower limit of the preset humidity range

It means that the humidity in the room is low, and then the low humidity control process is performed, i.e. the operation frequency of the compressor is controlled to be reduced, for example, the adjusted operation frequency of the compressor

Because the running frequency of the compressor is reduced, the evaporation temperature of the indoor heat exchanger is increased, the latent heat ratio of the air conditioner is further improved, the occupation ratio of latent heat in refrigerating capacity is reduced, the reduction of dehumidification capacity is finally realized, and the indoor relative humidity is improved.

If the current indoor environment humidity

Greater than or equal to the preset humidity rangeLower limit value of

And is less than or equal to the upper limit value of the preset humidity range

The operating frequency of the compressor is not adjusted, i.e. the compressor is controlled to follow the current operating frequency f₀And continuing to operate.

Therefore, the latent heat sensible heat ratio of the air conditioner refrigeration can be adjusted by adjusting the running frequency of the compressor, so that the relative humidity of the indoor air is controlled, and the comfort of the indoor air is effectively improved.

As will be described in detail below, how to adjust at least two of the throttling element, the indoor fan and the outdoor fan to make the current indoor ambient humidity within the preset humidity range, and how to adjust at least two of the compressor, the indoor fan and the outdoor fan to make the current indoor ambient humidity within the preset humidity range are provided.

As an example, if the current indoor ambient humidity is present when a throttling element is present in the air conditioner

Greater than the upper limit of the preset humidity range

A high humidity control process is entered, i.e., the current operating frequency of the compressor is controlled to remain unchanged and the opening degree of the throttling element is adjusted to be small

And reducing the rotating speed of the indoor fan toOr controlling the current running frequency of the compressor to be kept unchanged and adjusting the opening of the throttling element to be smaller

And increasing the rotation speed of the outdoor fan to

Or, the current running frequency of the compressor is controlled to be kept unchanged, and the rotating speed of the indoor fan is reduced to

And increasing the rotation speed of the outdoor fan to

Or controlling the current running frequency of the compressor to be kept unchanged and adjusting the opening of the throttling element to be smaller

The rotating speed of the indoor fan is reduced to

And increasing the rotation speed of the outdoor fan to

If the current indoor environment humidity

Less than the lower limit of the preset humidity range

A low humidity control process is entered, i.e., the current operating frequency of the compressor is controlled to remain unchanged and the opening degree of the throttling element is adjusted to be increased to

And increasing the rotating speed of the indoor fan to

And meanwhile, the current rotating speed of the outdoor fan is controlled to be kept unchanged.

If the current indoor environment humidity

Greater than or equal to the lower limit value of the preset humidity range

And is less than or equal to the upper limit value of the preset humidity rangeThe opening degree of the throttling element, the rotation speed of the indoor fan, the rotation speed of the outdoor fan and the operating frequency of the compressor are not adjusted.

As another example, if the current indoor ambient humidity is present when the throttling element is not present in the air conditioner

Greater than the upper limit of the preset humidity range

A high humidity control process is entered, i.e., the operation frequency of the compressor is adjusted up to

And the rotating speed of the indoor fan is reduced toOr, the operating frequency of the compressor is adjusted up to

And the rotating speed of the outdoor fan is increased to

Or the rotating speed of the indoor fan is reduced to

And the rotating speed of the outdoor fan is increased to

Or, the operating frequency of the compressor is adjusted up to

And the rotating speed of the indoor fan is reduced to

And increasing the rotation speed of the outdoor fan to

If the current indoor environment humidityLess than the lower limit of the preset humidity range

A low humidity control process is entered, i.e., the operating frequency of the compressor is adjusted up toAnd the rotating speed of the indoor fan is increased to

If the current indoor environment humidity

Greater than or equal to the lower limit value of the preset humidity range

And is less than or equal to the upper limit value of the preset humidity range

The operating frequency of the compressor, the rotating speed of the indoor fan and the rotating speed of the outdoor fan are not adjustedAnd (6) adjusting.

As a specific example, as shown in fig. 3, the humidity control method of the air conditioner may include the steps of:

s101, acquiring the current indoor environment humidity

S102, judging the current indoor environment humidity

Whether the humidity is larger than the upper limit value of the preset humidity range

If yes, go to step S103; if not, step S106 is performed.

And S103, judging whether a throttling element exists in the air conditioner or not. If yes, go to step S104; if not, step S105 is performed.

S104, the operation frequency of the compressor is kept unchanged, the opening degree of the throttling element is reduced, the rotation speed of the indoor fan is reduced, and the rotation speed of the outdoor fan is increased, that is, the operation frequency f of the compressor is f₀Opening degree of the throttling elementRotation speed of indoor fan

Rotation speed of outdoor fan

S105, increasing the frequency of the compressor, reducing the rotating speed of the indoor fan and increasing the rotating speed of the outdoor fan, namely, the running frequency of the compressor

Rotation speed of indoor fan

Rotation speed of outdoor fan

S106, judging the current indoor environment humidity

Whether or not it is less than the lower limit value of the preset humidity rangeIf yes, go to step S107; if not, step S110 is executed.

S107, judging whether the air conditioner has a throttling element or not. If yes, go to step S108; if not, step S109 is performed.

S108, the operating frequency of the compressor is kept unchanged, the opening degree of the throttling element is adjusted to be larger, the rotating speed of the indoor fan is increased, and the rotating speed of the outdoor fan is kept unchanged, that is, the operating frequency f of the compressor is f₀Opening degree of the throttling elementRotation speed of indoor fan

Rotating speed N of outdoor fan_w＝N_w0。

S109, reducing the frequency of the compressor, increasing the rotating speed of the indoor fan and keeping the rotating speed of the outdoor fan unchanged, namely the running frequency of the compressorRotation speed of indoor fanRotating speed N of outdoor fan_w＝N_w0。

And S110, keeping the current state unchanged, namely keeping the running frequency of the compressor, the opening of the throttling element, the rotating speed of the indoor fan and the rotating speed of the outdoor fan unchanged.

To sum up, according to the humidity control method of the air conditioner in the embodiment of the present invention, when the current indoor environment humidity is not within the preset humidity range during the operation of the air conditioner in the cooling mode, if the air conditioner has a throttling element, the opening degree adjustment amount of the throttling element, the indoor rotation speed adjustment amount of the indoor fan, and the outdoor rotation speed adjustment amount of the outdoor fan are obtained according to the current outdoor environment temperature, the current indoor environment temperature, and the current indoor environment humidity, then the current operation frequency of the compressor in the air conditioner is controlled to be unchanged, and at least two of the throttling element, the indoor fan, and the outdoor fan are adjusted according to the opening degree adjustment amount, the indoor rotation speed adjustment amount, and the outdoor rotation speed adjustment amount, so as to make the current indoor environment humidity within the preset humidity range, thereby adjusting the latent heat display and heat ratio of the air conditioner cooling by adjusting the opening degree of the throttling element, the rotation speed of the indoor fan, and the rotation speed of the outdoor fan, thereby controlling the relative humidity of the indoor air and effectively improving the comfort of the indoor air; if no throttling element exists, the latent heat sensible heat ratio of the refrigeration of the air conditioner is adjusted by adjusting the running frequency of the compressor, the rotating speed of the indoor fan and the rotating speed of the outdoor fan, so that the relative humidity of the indoor air is controlled, and the comfort of the indoor air is effectively improved.

In addition, an embodiment of the present invention also provides a computer-readable storage medium having instructions stored therein, and when the instructions are executed, the air conditioner performs the humidity control method described above.

Fig. 4 is a schematic structural view of a humidity control apparatus of an air conditioner according to an embodiment of the present invention. As shown in fig. 4, the humidity control apparatus of an air conditioner according to an embodiment of the present invention may include: a first obtaining module 110, a judging module 120, a second obtaining module 130 and a control module 140.

The first obtaining module 110 is configured to obtain a current indoor environment humidity during a process in which the air conditioner operates in a cooling mode; the judging module 120 is configured to judge whether the current indoor environment humidity is within a preset humidity range, and further judge whether a throttling element exists in the air conditioner when the current indoor environment humidity is not within the preset humidity range; the second obtaining module 130 is configured to obtain a current outdoor environment temperature and a current indoor environment temperature when a throttling element exists in the air conditioner, and obtain an opening adjustment amount of the throttling element, an indoor rotation speed adjustment amount of the indoor fan, and an outdoor rotation speed adjustment amount of the outdoor fan according to the current outdoor environment temperature, the current indoor environment temperature, and the current indoor environment humidity; the control module 140 is connected to the second obtaining module 130, and the control module 140 is configured to control a current operating frequency of a compressor in the air conditioner to remain unchanged, and adjust at least two of the throttling element, the indoor fan, and the outdoor fan according to the opening adjustment amount, the indoor rotational speed adjustment amount, and the outdoor rotational speed adjustment amount, so that the current indoor environment humidity is within a preset humidity range.

According to an embodiment of the present invention, if there is no throttling element in the air conditioner, the second obtaining module 130 obtains a frequency adjustment amount of the compressor according to the current outdoor environment temperature, the current indoor environment temperature and the current indoor environment humidity, and the control module 140 adjusts at least two of the compressor, the indoor fan and the outdoor fan according to the frequency adjustment amount, the indoor rotational speed adjustment amount and the outdoor rotational speed adjustment amount.

According to an embodiment of the present invention, if the current indoor environment humidity is greater than the upper limit value of the preset humidity range, the control module 140 decreases the current opening of the throttling element by the opening adjustment amount; and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, the control module adjusts the current opening of the throttling element by an opening adjustment amount.

Further, the opening degree adjustment amount satisfies the following formula:

wherein,

in order to adjust the opening degree, the opening degree is adjusted,

is the first opening degree adjustment amount,

with the current indoor ambient humidity

According to an embodiment of the present invention, the indoor rotation speed adjustment amount includes a first indoor rotation speed adjustment amount and a second indoor rotation speed adjustment amount, wherein if the current indoor ambient humidity is greater than an upper limit value of a preset humidity range, the control module 140 decreases the current rotation speed of the indoor fan by the first indoor rotation speed adjustment amount; if the current indoor environment humidity is less than the lower limit value of the preset humidity range, the control module 140 increases the current rotation speed of the indoor fan by a second indoor rotation speed adjustment amount.

the ratio is adjusted for the first indoor rotational speed,

the ratio is adjusted for the second indoor rotational speed,

and

respectively corresponding to the current indoor environment humidity

In a functional relationship with each other, the first and second,

and

According to an embodiment of the present invention, the outdoor rotation speed adjustment amount includes a first outdoor rotation speed adjustment amount, wherein if the current indoor environment humidity is greater than an upper limit value of the preset humidity range, the control module 140 increases the current rotation speed of the outdoor fan by the first outdoor rotation speed adjustment amount; if the current indoor environment humidity is less than the lower limit value of the preset humidity range, the control module 140 controls the current rotating speed of the outdoor fan to be kept unchanged.

wherein, Δ N_w1Is the first outdoor rotational speed adjustment amount,

the ratio is adjusted for the first outdoor rotational speed,

with the current indoor ambient humidityIn a functional relationship with each other, the first and second,all the values of (A) are in the range of 0-1, N_w0The rotating speed of the front outdoor fan is adjusted.

According to an embodiment of the present invention, if the current indoor environment humidity is greater than the upper limit value of the preset humidity range, the control module 140 increases the current operating frequency of the compressor by the frequency adjustment amount; if the current indoor environment humidity is less than the lower limit value of the preset humidity range, the control module 140 decreases the current operating frequency of the compressor by the frequency adjustment amount.

Further, the frequency adjustment amount satisfies the following formula:

wherein,

in order to adjust the amount of frequency,

in order to adjust the amount of the first frequency,

with the current indoor ambient humidity

It should be noted that, for details not disclosed in the humidity control device of the air conditioner in the embodiment of the present invention, please refer to details disclosed in the humidity control method of the air conditioner in the embodiment of the present invention, and detailed descriptions thereof are omitted here.

In addition, the embodiment of the invention also provides an air conditioner, which comprises the humidity control device.

It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

In addition, in the description of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A humidity control method of an air conditioner is characterized by comprising the following steps:

acquiring the current indoor environment humidity in the process of operating the air conditioner in a refrigeration mode;

judging whether the current indoor environment humidity is within a preset humidity range;

if the current indoor environment humidity is not in the preset humidity range, further judging whether an electronic expansion valve exists in the air conditioner;

if the electronic expansion valve exists in the air conditioner, acquiring the current outdoor environment temperature and the current indoor environment temperature, and acquiring the opening regulating quantity of the electronic expansion valve, the indoor rotating speed regulating quantity of an indoor fan and the outdoor rotating speed regulating quantity of an outdoor fan according to the current outdoor environment temperature, the current indoor environment temperature and the current indoor environment humidity;

and controlling the current running frequency of a compressor in the air conditioner to be kept unchanged, and adjusting at least two of the electronic expansion valve, the indoor fan and the outdoor fan according to the opening degree adjustment quantity, the indoor rotating speed adjustment quantity and the outdoor rotating speed adjustment quantity so as to enable the current indoor environment humidity to be within the preset humidity range.

2. The humidity control method of an air conditioner according to claim 1, wherein if the electronic expansion valve is not present in the air conditioner, the current outdoor ambient temperature and the current indoor ambient temperature are acquired, and a frequency adjustment amount, the indoor rotational speed adjustment amount, and the outdoor rotational speed adjustment amount of the compressor are acquired based on the current outdoor ambient temperature, the current indoor ambient temperature, and at least two of the compressor, the indoor fan, and the outdoor fan are adjusted based on the frequency adjustment amount, the indoor rotational speed adjustment amount, and the outdoor rotational speed adjustment amount.

3. The humidity control method of an air conditioner according to claim 1, wherein,

if the current indoor environment humidity is larger than the upper limit value of the preset humidity range, the current opening degree of the electronic expansion valve is reduced by the opening degree adjustment amount;

and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, the current opening degree of the electronic expansion valve is increased by the opening degree adjusting amount.

4. The humidity control method of an air conditioner according to claim 3, wherein the opening degree adjustment amount satisfies the following formula:

wherein,

for the amount of adjustment of the opening degree,

for a first opening adjustment amount, the

And the current indoor environment humidity

5. The humidity control method of an air conditioner according to claim 1 or 2, wherein the indoor rotation speed adjustment amount includes a first indoor rotation speed adjustment amount and a second indoor rotation speed adjustment amount, wherein,

if the current indoor environment humidity is larger than the upper limit value of the preset humidity range, adjusting the current rotating speed of the indoor fan to be smaller than the first indoor rotating speed adjusting amount;

and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, increasing the current rotating speed of the indoor fan by the second indoor rotating speed adjusting amount.

6. The humidity control method of an air conditioner according to claim 5, wherein the first indoor rotational speed adjustment amount and the second indoor rotational speed adjustment amount are obtained by the following formulas:

the ratio is adjusted for the first indoor rotational speed,for a second indoor rotational speed, said

And said

Respectively corresponding to the current indoor environment humidity

In a functional relationship, said

And said

7. The humidity control method of an air conditioner according to claim 1 or 2, wherein the outdoor rotation speed adjustment amount includes a first outdoor rotation speed adjustment amount, wherein,

if the current indoor environment humidity is larger than the upper limit value of the preset humidity range, the current rotating speed of the outdoor fan is increased by the first outdoor rotating speed adjusting amount;

and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, controlling the current rotating speed of the outdoor fan to be kept unchanged.

8. The humidity control method of an air conditioner according to claim 7, wherein the first outdoor rotational speed adjustment amount is obtained by the following formula:

wherein, Δ N_w1Is the first outdoor rotational speed adjustment amount,

for a first outdoor rotational speed, said

And the current indoor environment humidity

In a functional relationship, said

9. The humidity control method of an air conditioner according to claim 2, wherein,

if the current indoor environment humidity is larger than the upper limit value of the preset humidity range, increasing the current running frequency of the compressor by the frequency adjustment amount;

and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, reducing the current running frequency of the compressor by the frequency regulating quantity.

10. The humidity control method of an air conditioner according to claim 9, wherein the frequency adjustment amount satisfies the following formula:

wherein,

for the purpose of the amount of frequency adjustment,for a first frequency adjustment amount, the

And the current indoor environment humidity

11. A computer-readable storage medium having instructions stored therein, which when executed, the air conditioner performs the humidity control method of any one of claims 1-10.

12. A humidity control apparatus of an air conditioner, comprising:

the first acquisition module is used for acquiring the current indoor environment humidity in the process that the air conditioner operates in a refrigeration mode;

the judging module is used for judging whether the current indoor environment humidity is within a preset humidity range or not and further judging whether an electronic expansion valve exists in the air conditioner or not when the current indoor environment humidity is not within the preset humidity range;

a second obtaining module, configured to obtain a current outdoor environment temperature and a current indoor environment temperature when the electronic expansion valve exists in the air conditioner, and obtain an opening adjustment amount of the electronic expansion valve, an indoor rotation speed adjustment amount of an indoor fan, and an outdoor rotation speed adjustment amount of an outdoor fan according to the current outdoor environment temperature, the current indoor environment temperature, and the current indoor environment humidity;

and the control module is connected with the second acquisition module and used for controlling the current operating frequency of a compressor in the air conditioner to be kept unchanged, and adjusting at least two of the electronic expansion valve, the indoor fan and the outdoor fan according to the opening degree adjustment quantity, the indoor rotating speed adjustment quantity and the outdoor rotating speed adjustment quantity so as to enable the current indoor environment humidity to be in the preset humidity range.

13. The humidity control apparatus of an air conditioner according to claim 12, wherein if the electronic expansion valve is not present in the air conditioner, the second obtaining module obtains the current outdoor ambient temperature and the current indoor ambient temperature, and obtains a frequency adjustment amount, the indoor rotational speed adjustment amount, and the outdoor rotational speed adjustment amount of the compressor based on the current outdoor ambient temperature, the current indoor ambient temperature, and the control module adjusts at least two of the compressor, the indoor fan, and the outdoor fan based on the frequency adjustment amount, the indoor rotational speed adjustment amount, and the outdoor rotational speed adjustment amount.

14. The humidity control apparatus of an air conditioner according to claim 12, wherein,

if the current indoor environment humidity is larger than the upper limit value of the preset humidity range, the control module adjusts the current opening of the electronic expansion valve to be smaller than the opening adjustment amount;

and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, the control module increases the current opening of the electronic expansion valve by the opening adjustment amount.

15. The humidity control apparatus of an air conditioner according to claim 14, wherein the opening degree adjustment amount satisfies the following formula:

wherein,for the amount of adjustment of the opening degree,

for a first opening adjustment amount, theAnd the current indoor environment humidity

16. The humidity control apparatus of an air conditioner according to claim 12 or 13, wherein the indoor rotation speed adjustment amount includes a first indoor rotation speed adjustment amount and a second indoor rotation speed adjustment amount, wherein,

if the current indoor environment humidity is larger than the upper limit value of the preset humidity range, the control module adjusts the current rotating speed of the indoor fan to be smaller than the first indoor rotating speed adjusting amount;

and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, the control module increases the current rotating speed of the indoor fan by the second indoor rotating speed regulating quantity.

17. The humidity control apparatus of an air conditioner according to claim 16, wherein the first indoor rotational speed adjustment amount and the second indoor rotational speed adjustment amount are obtained by the following formulas:

the ratio is adjusted for the first indoor rotational speed,

for a second indoor rotational speed, said

And saidRespectively corresponding to the current indoor environment humidity

In a functional relationship, said

And said

18. The humidity control apparatus of an air conditioner according to claim 12 or 13, wherein the outdoor rotation speed adjustment amount includes a first outdoor rotation speed adjustment amount, wherein,

if the current indoor environment humidity is larger than the upper limit value of the preset humidity range, the control module increases the current rotating speed of the outdoor fan by the first outdoor rotating speed adjusting amount;

and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, the control module controls the current rotating speed of the outdoor fan to be kept unchanged.

19. The humidity control apparatus of an air conditioner according to claim 18, wherein the first outdoor rotational speed adjustment amount is obtained by the following formula:

wherein, Δ N_w1Is the first outdoor rotational speed adjustment amount,

for a first outdoor rotational speed, said

And the current indoor environment humidity

In a functional relationship, said

Value range ofAll 0 to 1, N_w0The rotating speed of the outdoor fan is adjusted.

20. The humidity control apparatus of an air conditioner according to claim 13, wherein,

if the current indoor environment humidity is larger than the upper limit value of the preset humidity range, the control module increases the current running frequency of the compressor by the frequency adjustment amount;

and if the current indoor environment humidity is smaller than the lower limit value of the preset humidity range, the control module reduces the current running frequency of the compressor by the frequency regulating quantity.

21. The humidity control apparatus of an air conditioner according to claim 20, wherein the frequency adjustment amount satisfies the following formula:

wherein,

for the purpose of the amount of frequency adjustment,

for a first frequency adjustment amount, the

And the current indoor environment humidity

22. An air conditioner characterized by comprising a humidity control device as claimed in any one of claims 12 to 21.