CN114543170B

CN114543170B - Method and device for preventing cold air of air conditioner and air conditioner

Info

Publication number: CN114543170B
Application number: CN202210048360.3A
Authority: CN
Inventors: 周星宇; 矫立涛; 刘帅; 尹义金
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-01-17
Filing date: 2022-01-17
Publication date: 2024-05-24
Anticipated expiration: 2042-01-17
Also published as: CN114543170A

Abstract

The application relates to the technical field of intelligent household appliances, and discloses a method for preventing cold air of an air conditioner, wherein an air outlet of an indoor unit of the air conditioner is provided with an electric heating part, the electric heating part is provided with a plurality of heating sections which can be independently controlled, and different heating sections correspond to different preset areas of the air outlet; the method comprises the following steps: under the condition that the air conditioner starts to operate in a heating mode, acquiring parameters of the air conditioner; determining a heating strategy of each heating section according to the parameters of the air conditioner; and controlling each heating section to execute a corresponding heating strategy. Like this, the electrical heating portion promotes the air-out temperature of the different regions of air outlet simultaneously, can make air-out temperature rise rapidly to it is suitable to have guaranteed the air-conditioner air-out temperature. And moreover, the plurality of heating sections heat the corresponding preset areas simultaneously, so that the overall air outlet temperature of the air outlet is balanced, and the problem of overhigh local air outlet temperature is solved. And the experience of the user is improved. The application also discloses a cold air prevention device for the air conditioner and the air conditioner.

Description

Method and device for preventing cold air of air conditioner and air conditioner

Technical Field

The application relates to the technical field of intelligent household appliances, in particular to a method and a device for preventing cold air of an air conditioner and the air conditioner.

Background

When the air conditioner is started to heat the mode in winter, the temperature of the inner coil needs to be raised. Before the inner coil pipe does not reach a certain temperature, the air conditioner blows cold air. In order to reduce uncomfortable feeling caused by cold air blowing of the air conditioner, a heating structure such as an electric heating pipe is arranged on the air conditioner, so that the air outlet temperature is increased.

The existing control method for auxiliary electric heating of the air conditioner comprises the following steps: acquiring indoor environment temperature, set working temperature of an air conditioner and outdoor environment temperature; calculating a difference between the indoor ambient temperature and the set operating temperature; acquiring an opening power corresponding list, wherein the corresponding list is provided with a difference value and a corresponding relation between outdoor environment temperature and opening power; matching the matched starting power from the corresponding list according to the difference value and the outdoor environment temperature; taking the matched starting power as the starting power of the auxiliary electric heating; the auxiliary electric heating is switched on according to the determined switching power.

In the control method, the air outlet temperature is increased by controlling the starting power of auxiliary electric heating. However, the auxiliary electric heating has limited power and cannot rapidly raise the air outlet temperature. Moreover, if the maximum power is used, the temperature around the auxiliary electric heating can be rapidly increased, but the temperature increase at other positions is not obvious, so that the problem of uneven air outlet temperature can be caused, and the experience of a user is affected.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a method and a device for preventing cold air of an air conditioner and the air conditioner, so as to ensure the temperature and the temperature uniformity of air outlet when the air conditioner operates in a heating mode initially.

In some embodiments, the air outlet of the indoor unit of the air conditioner is provided with an electric heating part, the electric heating part is provided with a plurality of heating sections capable of being controlled independently, and different heating sections correspond to different preset areas of the air outlet; the method comprises the following steps: acquiring parameters of the air conditioner under the condition that the air conditioner starts to operate in a heating mode; determining a heating strategy of each heating section according to the parameters of the air conditioner; and controlling each heating section to execute a corresponding heating strategy.

In some embodiments, the apparatus comprises: a processor and a memory storing program instructions, the processor being configured to perform the aforementioned method for air conditioning against cold air when the program instructions are executed.

In some embodiments, the air conditioner includes: the indoor unit is provided with an air outlet; the electric heating part is arranged at the air outlet; the air outlet is provided with different preset areas, the electric heating part is provided with a plurality of heating sections which can be controlled independently, and the different heating sections correspond to the different preset areas; and, the aforesaid is used for the cold wind prevention device of air conditioner.

The method and the device for preventing cold air of the air conditioner and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

When the air conditioner just starts to operate the heating mode, the heating strategy of each heating section is determined based on the parameters of the air conditioner. The heating strategy of each heating section is adaptively matched with the air conditioning state. Therefore, the proper heating strategy is matched for each preset area of the air outlet, and the air outlet temperature of different preset areas is properly improved. The electric heating part can raise the air outlet temperature of different areas of the air outlet simultaneously, so that the air outlet temperature can be raised rapidly, and the air outlet temperature of the air conditioner is ensured to be proper. And moreover, the plurality of heating sections heat the corresponding preset areas simultaneously, so that the overall air outlet temperature of the air outlet is balanced, and the problem of overhigh local air outlet temperature is solved. And the experience of the user is improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic diagram of a method for air conditioning cold air protection provided by an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a heating strategy for determining each heating section according to parameters of an air conditioner in a method for preventing cold air in the air conditioner according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of determining a target heating section according to parameters of an air conditioner in a method for preventing cold air of the air conditioner according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of another method for air conditioning cold air protection in accordance with an embodiment of the present disclosure;

FIG. 5 is a schematic view of an apparatus for air conditioning cold air protection provided in an embodiment of the present disclosure;

fig. 6 is a schematic view of another apparatus for air conditioning cold air prevention provided by an embodiment of the present disclosure.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The term "plurality" means two or more, unless otherwise indicated.

The term "corresponding" may refer to an association or binding relationship, and B corresponds to B and refers to an association or binding relationship between B and B.

The embodiment of the disclosure provides an air conditioner. The indoor unit of the air conditioner is provided with an air outlet. The air outlet is provided with an electric heating part, and the air outlet of the air outlet can be heated, so that the temperature of the air outlet is increased. The electric heating part is provided with a plurality of heating sections. The switch and heating power of each heating section can be independently controlled. Correspondingly, the air outlet is also divided into a plurality of different preset areas, and each preset area corresponds to each heating section one by one. By controlling a certain (or some) heating section(s) independently, the temperature of the corresponding preheating area can be controlled, so that the air outlet temperature of the corresponding preset area is raised independently.

As shown in fig. 1, an embodiment of the present disclosure provides a method for preventing cold air of an air conditioner, including:

S101, in the case where the air conditioner starts to operate the heating mode, the air conditioner acquires its parameters.

S102, the air conditioner determines the heating strategy of each heating section according to the parameters.

S103, the air conditioner controls each heating section to execute a corresponding heating strategy.

The user can send instructions to the air conditioner to run the heating mode through the air conditioner remote control or the mobile APP (ApplicBtion, application). After receiving the instruction, the air conditioner starts to operate the heating mode. When the air conditioner just begins to operate in the heating mode, the temperature of the inner coil has not yet risen to a suitable temperature. At this time, the air conditioner blows out cool air. Thus, the parameters of the air conditioner are acquired at this time. The parameters of the air conditioner may be structural parameters of the air conditioner or operation parameters of the air conditioner. The structural parameters of the air conditioner can be pre-stored in a processor of the air conditioner before the air conditioner leaves a factory, and can be called when the air conditioner needs to be used. The operating parameters of the air conditioner may be obtained by corresponding sensors provided in the air conditioner. After the parameters of the air conditioner are obtained, the heating strategy of each heating section is determined according to the parameters of the air conditioner. Based on the structural parameters and the operating parameters of the air conditioner, the individual heating sections are matched to an appropriate heating strategy. And then controlling each heating section to execute a corresponding heating strategy, so as to heat the air outlet of the air outlet.

In the embodiment of the disclosure, when the air conditioner just starts to operate the heating mode, the heating strategy of each heating section is determined based on the parameters of the air conditioner. The heating strategy of each heating section is adaptively matched with the air conditioning state. Therefore, the proper heating strategy is matched for each preset area of the air outlet, and the air outlet temperature of different preset areas is properly improved. The electric heating part can raise the air outlet temperature of different areas of the air outlet simultaneously, so that the air outlet temperature can be raised rapidly, and the air outlet temperature of the air conditioner is ensured to be proper. And moreover, the plurality of heating sections heat the corresponding preset areas simultaneously, so that the overall air outlet temperature of the air outlet is balanced, and the problem of overhigh local air outlet temperature is solved. And the experience of the user is improved.

Optionally, as shown in connection with fig. 2, the air conditioner determines a heating strategy of each heating section according to parameters thereof, including:

S201, the air conditioner determines a target heating section according to parameters of the air conditioner.

S202, the air conditioner determines the power gear of the target heating section according to the parameters of the air conditioner.

The air outlet temperature when the air conditioner just starts to operate the heating mode is different from the air outlet temperature after a period of operation. When the temperature of the air outlet changes, the heating strategy of each heating section also needs to be adaptively changed. Therefore, the temperature of the air outlet is more suitable and energy is not wasted. Therefore, in determining the heating strategy of the heating section, on the one hand, the target heating section is determined according to the parameters of the air conditioner. The heating section for which the heating power needs to be adjusted is determined as the target heating section. Conversely, the heating section for which the heating power does not need to be adjusted is not the target heating section. On the other hand, after the target heating section is determined, the power gear of the target heating section is determined according to the parameters of the air conditioner. Therefore, the power of the target heating section is adjusted, so that the air outlet temperature of the corresponding preset area is more suitable. While the power of the non-target heating section may remain unchanged. Therefore, based on the parameters of the air conditioner, the heating section needing to adjust the heating power and the power gear to be adjusted are determined, and the temperature of the air outlet can be more suitable.

Optionally, S201, the air conditioner determines a target heating section according to parameters thereof, including:

And under the condition that the operation time length is smaller than the time length threshold value, the air conditioner determines that each heating section is a target heating section.

And under the condition that the operation duration is greater than or equal to the duration threshold, the air conditioner determines the heating sections corresponding to the preset areas from top to bottom as target heating sections controlled in sequence.

Here, the parameters of the air conditioner include: the operating time of the heating mode. Optionally, the processor of the air conditioner has a timing function. And when the air conditioner starts to operate the heating mode, starting timing, so that the operation time of the heating mode is obtained in real time. If the temperature sensor is not arranged in the preset area, whether the temperature of the preset area is increased or not can be judged by utilizing the operation time length of the heating mode. Generally, the longer the heating mode operation period, the higher the temperature rise. When the air conditioner operates in a heating mode, hot air is blown out from the air outlet. High temperature air is liable to move upward. So the temperature difference of the air outlet is mainly embodied in the up-down direction. And the temperature difference in the left-right direction is not obvious. Therefore, when the air outlet is divided into areas, the air outlet is divided into a plurality of preset areas from top to bottom, and the preset areas are denoted as A1 and A2 … An. Therefore, the parameters of the air conditioner herein further include: the upper and lower relative positions of each preset area. Because each preset area is divided from top to bottom in turn, each heating section corresponding to each preset area one by one is correspondingly arranged from top to bottom in turn. The heating sections from top to bottom are designated as B1, B2 … Bn in sequence. A time duration threshold tn of the customized heat mode operation time duration is set. the larger tn is, the longer the operation time of the heating mode is, and the larger the temperature of the air outlet is increased. And acquiring the running time t of the heating mode in real time. When t < tn, the heating mode is not operated for a long time. At this time, the air outlet temperature is low. In order to raise the temperature of the air outlet as soon as possible, the heating power of all the heating sections needs to be adjusted. All heating zones are determined to be target heating zones. When t is more than or equal to tn, the heating mode is operated for a longer time. At this time, the temperature of the air outlet is greatly improved. Since the air with high temperature is easy to move upwards, the temperature above the air outlet area is higher. The temperature of each preset area is reduced from top to bottom. The air outlet temperature of the uppermost preset area A1 can reach the proper temperature at first. Therefore, the power of the heating section B1 corresponding to the preset area A1 needs to be adjusted first. The other heating sections are controlled and adjusted in sequence. That is, the heating sections B1, B2 … Bn are target heating sections which are controlled and adjusted in sequence. First, B1 is a target heating section. And B2 is a target heating section after the power gear of B1 is adjusted. Similarly, when the power gear of Bn-1 is adjusted, bn is the target heating section.

Therefore, the target heating section is determined based on the operation time of the heating mode and the characteristic that high-temperature air is easy to move upwards, so that the target heating section is determined more accurately. The heating section which is necessary to be adjusted is determined as a target heating section, so that the power gear of the target heating section is adjusted later. Thereby the air-out temperature of the air conditioner is more suitable.

Optionally, S202, the air conditioner determines a power gear of the target heating section according to the parameter thereof, including:

and under the condition that the operation duration is smaller than the duration threshold value, the air conditioner determines that the power gear of the target heating section is the highest gear.

And under the condition that the operation duration is greater than or equal to the duration threshold value, the air conditioner determines the power gear of the target heating section controlled first.

And the air conditioner determines the power gear of the next target heating section according to the power gear of the current target heating section.

As previously described, when t < tn, the heating mode does not run for a long time. At this time, the air outlet temperature is low. Thus, each heating section was determined to be the target heating section. In order to rapidly raise the temperature of the air outlet, the power gear of the target heating section (all the heating sections) is determined to be the highest gear. When t is more than or equal to tn, the heating mode is operated for a longer time. At this time, the temperature of the air outlet is greatly improved. However, since the upper temperature is too high, the power shift of the target heating section B1 to be controlled first is determined. And for the power gear of B2-Bn, determining the power gear of the next target heating section according to the power gear of the current target heating section. That is, after the power adjustment of B1 is completed, B2 is the next target heating segment, and then the power gear of B2 is determined according to the power gear after the adjustment of B1. And similarly, after the power adjustment of Bn-1 is completed, bn is the next target heating section, and the power gear of Bn is determined according to the power gear adjusted by Bn-1.

Therefore, under the condition that the operation time length is smaller than the time length threshold value, the power gear of the heating section is determined to be the highest gear, and accordingly the air outlet temperature of the air conditioner is rapidly increased. So as to reduce the uncomfortable feeling of the cold air to the user. And under the condition that the operation time length is greater than or equal to the time length threshold value, sequentially determining the power gear of each target heating section according to the control sequence of the heating sections. Therefore, the heating power of the heating section is properly adjusted, so that the air outlet temperature of the air conditioner is more proper.

Optionally, the air outlet temperature is already greatly improved under the condition that the operation time length is greater than or equal to the time length threshold value (t is more than or equal to tn). And because the uppermost temperature is higher, the air conditioner determines that the power gear of the target heating section B1 controlled first gradually decreases until the power gear is reduced to the lowest gear. And under the condition that the power gear of the B1 is reduced to the lowest, determining that the power gear of the next target heating section B2 is gradually reduced until the power gear of the B2 is reduced to the lowest. And by analogy, under the condition that the power gear of Bn-1 is reduced to the lowest, determining that the power gear of the next target heating section Bn is gradually reduced until the power gear of Bn is reduced to the lowest. Like this, after heating mode operation is longer, air-out temperature obtains great promotion, based on the characteristic that hot air easily floats, from last to the heat power gear decline of each heating section of lower sectional control for the temperature in each preset region can both reach suitable temperature, thereby makes the air-out temperature of air conditioner more suitable.

Optionally, under the condition that the power of the lowest heating section Bn is reduced to the lowest power gear, the temperatures of all preset areas of the air outlet reach the proper temperatures. At this time, all the heating sections are determined to be closed, and the heating of the air outlet is stopped.

Optionally, as shown in connection with fig. 3, the air conditioner determines a target heating section according to parameters thereof, including:

S301, the air conditioner determines a target area according to the air outlet temperature of each preset area.

S302, the air conditioner determines a heating section corresponding to the target area as a target heating section.

Each preset area is provided with a temperature sensor. The temperature sensor can acquire the air outlet temperature of the corresponding preset area in real time. The air conditioning parameters here include: the temperature of the air outlet detected by different temperature sensors.

And determining a target area according to the air outlet temperature T of each preset area detected by each temperature sensor. And determining the heating section corresponding to the target area as a target heating section. So that the power gear of the target heating section can be adjusted later. Optionally, the processor of the air conditioner stores the association relation between the air outlet temperature and the power gear in advance. The association relation comprises the corresponding relation between the air outlet temperature of one or more target heating sections and the power gear. The association is shown in table 1:

Air-out temperature T (DEG C)	Power gear
		T＜T1	First gear position
T1≤T＜T2	Second gear
		T2≤T＜T3	Third gear position
T3≤T	Without any means for

TABLE 1

In table 1, in the power shift, the power shift is sequentially from high to low: first gear, second gear and third gear. Optionally, the first gear is the highest gear; the second gear is a middle gear; the third gear is the lowest gear. When T is smaller than T1, the temperature of the air outlet is too low, and the heating section is required to heat by the highest power gear. When T1 is less than or equal to T2, the outlet air temperature is increased, and the power gear of the heating section can be reduced to the second gear. When T2 is less than or equal to T3, the temperature of the air outlet is obviously improved, and the heating section is heated by the lowest power gear at the moment, so that the requirement of the temperature of the air outlet can be met. When T3 is less than or equal to T, the temperature of the air outlet reaches the proper temperature. At the moment, the heating section is not required to be used for lifting the temperature of the air outlet, and the heating section is determined to be closed. The power shift of each heating segment can be adjusted with the logic shown in table 1. Therefore, based on the temperature of each preset area, the corresponding heating sections are independently controlled, so that the air outlet temperature of each preset area can reach a proper temperature. The air outlet temperature of the air conditioner is more uniform. It should be noted that, in table 1, the specific division of the air outlet temperature and the power gear may be adjusted according to actual needs, and the disclosure does not limit the specific division.

Optionally, as shown in conjunction with fig. 4, another method for air conditioning cold air protection is provided in an embodiment of the present disclosure, including:

s401, in the case where the air conditioner starts to operate the heating mode, the air conditioner acquires its parameters.

S402, the air conditioner determines the heating strategy of each heating section according to the parameters.

S403, the air conditioner determines one or more operation strategies of the air deflector, the compressor and the fan according to the heating strategies of each heating section.

S404, the air conditioner controls each heating section to execute a corresponding heating strategy, and controls one or more of the air deflector, the compressor and the fan to execute a corresponding operation strategy.

While determining the heating strategy of the heating section, the operating strategy of one or more of the air deflector, compressor, fan may also be determined. Thereby controlling the operation of the air deflector, the compressor and the fan. The heating section is linked with the air deflector, the compressor and the fan. The air outlet temperature of the air conditioner is cooperatively increased, and the uncomfortable feeling of the air conditioner caused by blowing cold air to a user when the air conditioner just runs in a heating mode is reduced.

Optionally, S403, the air conditioner determines an operation strategy of the air deflector, the compressor and the blower according to the heating strategies of each heating section, including:

Under the condition that the power gear of each heating section is the highest gear, the air conditioner determines that the opening angle of the air deflector, the frequency of the compressor and the rotating speed of the fan are all minimum.

Under the condition that the power gear of the heating section is determined to be reduced, the air conditioner determines the opening angle of the air deflector, the frequency of the compressor and the rotating speed of the fan according to the ratio of the number of the heating sections, the power gear of which is reduced to the lowest gear, to the total number of the heating sections.

The power gear of each heating section is used as a determining basis for the opening angle of the air deflector, the frequency of the compressor and the rotating speed of the fan. When t < tn, the heating mode is not operated for a long time. At this time, the air outlet temperature is low. It is thus determined that the power level of all the heating sections is the highest level. At this time, the opening angle of the air guide plate is determined to be the minimum angle (the minimum angle is the minimum angle when the air guide plate is opened, excluding 0 °). When the air deflector is opened at the minimum angle, the air output can be reduced, and the air output direction avoids the user. The frequency of the compressor is determined to be the minimum frequency. And under the condition of lower air outlet temperature, the frequency of the compressor is enabled to be the minimum value, and the indoor heat exchange speed of low-temperature air outlet is reduced. The rotating speed of the fan is determined to be the minimum rotating speed, so that the air quantity of the air outlet of the air conditioner is minimum, and the indoor heat exchange speed of low-temperature air outlet can be reduced. Thus, the uncomfortable feeling of the air conditioner blowing cold air to the user can be reduced.

When the heating mode is operated for a sufficient time or the temperature of the air outlet reaches a certain temperature, the power gear of the corresponding heating section is determined to be reduced. At this time, the number N of heating stages of the lowest power shift stage is determined. The total number of the heating sections is M. And calculating the ratio N/M between the number of the heating sections of the lowest power gear and the total number of the heating sections. And determining the opening angle of the air deflector, the frequency of the compressor and the rotating speed of the fan according to the N/M. Optionally, the processor of the air conditioner stores the association relation of the ratio, the angle, the frequency and the rotating speed in advance. The association relation comprises the correspondence relation between one or more specific values N/M and the opening angle of the air deflector, the frequency of the compressor and the rotating speed of the fan. The association is shown in table 2:

N/M	Opening angle of air deflector	Compressor frequency	Fan speed
				N/M＜X1	First angle of	First frequency	First rotation speed
X1≤N/M＜X2	Second angle	Second frequency	Second rotation speed
				X2≤N/M＜X3	Third angle	Third frequency	Third rotation speed
X3≤N/M	Fourth angle	Fourth frequency	Fourth rotation speed

TABLE 2

In table 2, determination of the opening angle of the air deflector: the angles are from small to large in sequence: the first angle, the second angle, the third angle, the fourth angle. With the increase of the ratio N/M, the temperature of the air outlet is higher, and the feeling of the user on cold air is less obvious. Therefore, the opening angle of the air deflector is also increased. As the opening angle of the air deflector is larger, the air output of the air conditioner is larger.

Determination of compressor frequency: the frequencies are from small to large in sequence: the first frequency, the second frequency and the third frequency, and the fourth frequency is smaller than the third frequency. When N/M is less than X3, the temperature of the air outlet is higher and higher along with the increase of N/M. The compressor frequency is bigger and bigger, and the heat exchange speed in the room is higher and bigger. The higher the air outlet temperature is, the higher the indoor heat exchange speed is, and the feeling of blowing cold air to a user is less likely to be caused. When X3 is less than or equal to N/M, the temperature of the air outlet reaches the proper temperature, and the frequency of the compressor is determined to gradually decrease from the third frequency to the fourth frequency. The fourth frequency is a desired outdoor ambient temperature frequency.

Determining the rotating speed of a fan: the rotation speed is from small to large in sequence: the first rotating speed, the second rotating speed, the third rotating speed and the fourth rotating speed. With the increase of the ratio N/M, the temperature of the air outlet is higher. Therefore, the fan rotation speed is determined to be higher and higher, so that the air outlet speed of the air conditioner is improved. Since the outlet air temperature is increased, the increase of the wind speed does not make the user feel cool air.

According to the logic, the opening angle of the air deflector, the frequency of the compressor and the rotating speed of the fan can be independently controlled, and a plurality of air deflectors can be simultaneously controlled. The air outlet temperature sensor is suitable for the condition that the air outlet is provided with the temperature sensor, and is also suitable for the condition that the air outlet is not provided with the temperature sensor.

It should be noted that, in table 2, the specific division of the comparison value N/M, the opening angle of the air deflector, the frequency of the compressor and the rotation speed of the fan may be adjusted according to actual needs, and the disclosure does not limit the present disclosure.

Optionally, the air conditioner determines an operation strategy of the fan, including:

The air conditioner determines the number and positions of fans.

Under the condition that the number of the fans is multiple and the positions are different, the air conditioner determines the operation strategy of the fans according to the positions and the heating strategy of the fans.

In the processor of the air conditioner, the structural parameters of the air conditioner, in particular the number and the positions of fans, are prestored. And under the condition that the number of the fans is one, determining the rotating speed of the fans according to the logic. And under the condition that the number of the fans is a plurality of and the positions are different, determining the operation strategy of each fan according to the positions of the fans and the heating strategy. Each fan is operated at the lowest rotational speed at the very beginning.

Optionally, if the air outlet of the air conditioner is not provided with a temperature sensor, the air conditioner determines the operation strategy of the fan according to the position of the fan and the power gear of the heating section. The processor of the air conditioner is pre-stored with the association relation of the heating section, the power gear, the fan and the fan rotating speed. The association relationship comprises the correspondence relationship among one or more heating sections, power gears, fans and fan speeds. The association relationship is as follows

Table 3 shows:

TABLE 3 Table 3

In Table 3, m.gtoreq.n.times.2/3. Based on the logic for adjusting the power gear of the heating section according to the operation time length of the heating mode, when the power gears of the heating sections B1-Bm are all reduced to the lowest gear, the preset areas corresponding to most of the heating sections reach the proper temperature. It is determined that the rotational speed of the first fan increases and the rotational speed of the second fan is maintained at the minimum rotational speed. I.e. only one fan is controlled to increase in rotational speed, the rotational speed of the other fan still being kept at a minimum rotational speed. Thereby reducing the uncomfortable feeling of the air conditioner blowing cold air to the user. When the power gear of the heating sections Bm+1-Bn is reduced to the lowest gear, the fact that all preset areas reach proper temperatures is indicated, and the air outlet temperature of the air conditioner is greatly improved. Increasing the rotational speed of the second fan does not cause the user to feel cold. It is determined that the rotational speed of the first fan is continuously increased at this time, and it is determined that the rotational speed of the second fan is increased. Until the rotational speeds of the first fan and the second fan are increased to the highest rotational speed. It should be noted that, the association relationship among the heating section, the power gear, the fan and the fan rotation speed can be set according to the actual needs, and the present disclosure does not limit the present disclosure.

Optionally, if the air outlet of the air conditioner is provided with a temperature sensor, the air conditioner determines an operation strategy of the fan according to the air outlet temperature of each preset area. The processor of the air conditioner is pre-stored with the association relation of the preset area, the air outlet temperature, the fan and the fan rotating speed. The association relation comprises the correspondence relation among one or more preset areas, the air outlet temperature, the fan and the fan rotating speed. The association is shown in table 4:

TABLE 4 Table 4

In Table 4, m.gtoreq.n.times.2/3. As shown in the foregoing, when the air outlet temperatures of the preset areas A1 to Am are all T3 and T, it is determined that the rotation speed of the first fan is increased, and the rotation speed of the second fan is kept to be the lowest rotation speed. I.e. only one fan is controlled to increase in rotational speed, the rotational speed of the other fan still being kept at a minimum rotational speed. Thereby reducing the uncomfortable feeling of the air conditioner blowing cold air to the user. When the air outlet temperatures of the preset areas Am+1-An are not more than T3 (at the moment, the air outlet temperatures of the preset areas A1-Am are not more than T3), the rotating speed of the second fan is increased, and the user cannot feel cold. It is determined that the rotational speed of the first fan is continuously increased at this time, and it is determined that the rotational speed of the second fan is increased. Until the rotational speeds of the first fan and the second fan are increased to the highest rotational speed. It should be noted that, the association relationship among the preset area, the air outlet temperature, the fan and the fan rotation speed can be set according to the actual needs, and the present disclosure does not limit the present disclosure.

When the indoor unit has a plurality of fans, the fans are generally respectively an upper fan and a lower fan. The upper fan is a long through-flow fan. The lower fan is a short cross flow fan. For the whole air outlet, the preset areas A1-Am are middle-upper preset areas, and the preset areas Am+1-An are lower preset areas. When the air outlet temperatures of the middle and upper setting areas A1-Am are all T3-T, the rotation speed of the upper fan is determined to be increased, and the rotation speed of the lower fan is determined to be unchanged. When the air outlet temperatures of the lower preset areas Am+1-An are all T3 less than or equal to T (at the moment, the air outlet temperatures of the upper middle-upper preset areas A1-Am are also T3 less than or equal to T), the rotation speed of the upper fan is determined to be continuously increased, and the rotation speed of the lower fan is determined to be increased.

The implementation of the present embodiment will be specifically described below by way of example:

The air outlet of the air conditioner is divided into an upper area, a middle area and a lower area. The heating sections corresponding to the three areas one by one are respectively an upper heating section, a middle heating section and a lower heating section. Take m=n×2/3.

In the first case, the air outlet is not provided with a temperature sensor, and the fan is one:

When the heating operation time t is less than tn, the power gears of the three heating sections are all the highest gears, the opening angle of the air deflector is the minimum angle, the compressor operates at the minimum frequency, and the fan operates at the minimum rotation speed;

when the heating operation time t is more than or equal to tn, controlling the power gear of the upper heating section to be reduced (N/M is less than 1/3), wherein the opening angle of the air deflector is a first angle, the compressor operates at a first frequency, and the fan operates at a first rotational speed;

When the power gear of the upper heating section is reduced to the lowest gear (N/M is less than or equal to 1/3 and less than 2/3), controlling the power gear of the middle heating section to be reduced, enabling the opening angle of the air deflector to be a second angle, enabling the compressor to operate at a second frequency, and enabling the fan to operate at a second rotating speed;

When the power gear of the middle heating section is reduced to the lowest gear (N/M is less than or equal to 2/3 and less than 1), the power gear of the lower heating section is controlled to be reduced, the opening angle of the air deflector is a third angle, the compressor operates at a third frequency, and the fan operates at a third rotating speed;

When the power gear of the lower heating section is reduced to the lowest gear (N/M is less than or equal to 1), the three heating sections are controlled to be closed, the opening angle of the air deflector is a fourth angle, the compressor operates at a fourth frequency, and the fan operates at a fourth rotating speed.

In the second case, the air outlet is not provided with a temperature sensor, and the number of fans is two, namely an upper fan and a lower fan:

When the heating operation time t is less than t1, the power gears of the three heating sections are all the highest gears, the opening angle of the air deflector is the smallest angle, the compressor operates at the smallest frequency, the rotating speed of the upper fan is gradually increased, and the rotating speed of the lower fan is kept to be the lowest;

When the heating operation time t is more than or equal to t1, controlling the power gear of the upper heating section to be reduced (N/M is less than 1/3), wherein the opening angle of the air deflector is a first angle, the compressor operates at a first frequency, and the fan operates at a first rotational speed;

When the power gear of the upper heating section is reduced to the lowest gear (N/M is less than or equal to 1/3 and less than 2/3), controlling the power gear of the middle heating section to be reduced, enabling the opening angle of the air deflector to be a second angle, enabling the compressor to run at a second frequency, enabling the rotating speed of the upper fan to be gradually increased, and enabling the lower fan to keep the lowest rotating speed;

when the power gear of the middle heating section is reduced to the lowest gear (N/M is less than or equal to 2/3 and less than 1), the power gear of the lower heating section is controlled to be reduced, the opening angle of the air deflector is a third angle, the compressor operates at a third frequency, the rotating speed of the upper fan is gradually increased, and the lower fan keeps the lowest rotating speed;

When the power gear of the lower heating section is reduced to the lowest gear (1 is less than or equal to N/M), the three heating sections are controlled to be closed, the opening angle of the air deflector is a fourth angle, the compressor operates at a fourth frequency, the rotating speed of the upper fan is gradually increased, and the rotating speed of the lower fan is gradually increased.

In the third case, each area is provided with a temperature sensor, and the fan is one:

The control of the power gears of the three heating sections is as follows: when T < T1, the first gear (highest gear); when T1 is less than or equal to T2, the gear is a second gear; when T2 is less than or equal to T3, the gear is a third gear (lowest gear); when T3 is less than or equal to T, the heating section is closed;

When the power gear of all heating sections is not reduced (N/M is less than 1/3), controlling the opening angle of the air deflector to be a first angle, operating the compressor at a first frequency, and operating the fan at a first rotational speed;

When the power gear of the upper heating section is reduced (N/M is more than or equal to 1/3 and less than 2/3), the opening angle of the air deflector is controlled to be a second angle, the compressor operates at a second frequency, and the fan operates at a second rotating speed;

when the power gear of the upper heating section and the middle heating section is reduced (N/M is less than or equal to 2/3 and less than 1), controlling the opening angle of the air deflector to be a third angle, operating the compressor at a third frequency, and operating the fan at a third rotating speed;

When the power gear of all heating sections is reduced (N/M is less than or equal to 1), the opening angle of the air deflector is controlled to be a fourth angle, the compressor operates at a fourth frequency, and the fan operates at a fourth rotating speed.

And in the fourth case, each area is provided with a temperature sensor, and the number of fans is two, namely an upper fan and a lower fan:

When the power gear of all heating sections is not reduced (N/M is less than 1/3), controlling the opening angle of the air deflector to be a first angle, and operating the compressor at a first frequency;

when the power gear of the upper heating section is reduced (N/M is more than or equal to 1/3 and less than 2/3), controlling the opening angle of the air deflector to be a second angle, and operating the compressor at a second frequency;

when the power gear of the upper heating section and the middle heating section is reduced (N/M is less than or equal to 2/3 and less than 1), controlling the opening angle of the air deflector to be a third angle, and operating the compressor at a third frequency;

When the power gear of all heating sections is reduced (N/M is less than or equal to 1), controlling the opening angle of the air deflector to be a fourth angle, and operating the compressor at a fourth frequency;

The initial rotating speeds of the first fan and the second fan are the lowest rotating speeds;

when the air outlet temperature of the upper area and the middle area is greater than or equal to T3, controlling the rotation speed of the first fan to be increased, and keeping the rotation speed of the second fan to be the lowest;

when the air outlet temperature of all the areas is greater than or equal to T3, the rotating speed of the first fan is controlled to be continuously increased, and the rotating speed of the second fan is controlled to be increased.

Referring to fig. 5, an embodiment of the present disclosure provides an apparatus for preventing cold air of an air conditioner, including: an acquisition module 51, a determination module 52 and a control module 53. The acquisition module 51 is configured to acquire parameters of the air conditioner in the case where the air conditioner starts to operate the heating mode. The determination module 52 is configured to determine a heating strategy for each heating segment based on parameters of the air conditioner. The control module 53 is configured to control each heating segment to perform a corresponding heating strategy.

By adopting the device for preventing cold air of the air conditioner, when the air conditioner just starts to operate the heating mode, the heating strategy of each heating section is determined based on the parameters of the air conditioner. The heating strategy of each heating section is adaptively matched with the air conditioning state. Therefore, the proper heating strategy is matched for each preset area of the air outlet, and the air outlet temperature of different preset areas is properly improved. The electric heating part can raise the air outlet temperature of different areas of the air outlet simultaneously, so that the air outlet temperature can be raised rapidly, and the air outlet temperature of the air conditioner is ensured to be proper. And moreover, the plurality of heating sections heat the corresponding preset areas simultaneously, so that the overall air outlet temperature of the air outlet is balanced, and the problem of overhigh local air outlet temperature is solved. And the experience of the user is improved.

As shown in connection with fig. 6, an embodiment of the present disclosure provides an apparatus for air conditioning against cold air, including a processor (processor) 60 and a memory (memory) 61. Optionally, the apparatus may also include a communication interface (CommunicBtion InterfBce) 62 and a bus 63. The processor 60, the communication interface 62, and the memory 61 may communicate with each other via the bus 63. The communication interface 62 may be used for information transfer. The processor 60 may invoke logic instructions in the memory 61 to perform the method for air conditioning cold air protection of the above-described embodiments.

Further, the logic instructions in the memory 61 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product.

The memory 61 is a computer readable storage medium that may be used to store a software program, a computer executable program, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 60 performs functional applications as well as data processing by running program instructions/modules stored in the memory 61, i.e. implements the method for air conditioning cold air protection in the above-described embodiments.

The memory 61 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functions; the storage data area may store data created according to the use of the terminal device, etc. Further, the memory 61 may include a high-speed random access memory, and may also include a nonvolatile memory.

The embodiment of the disclosure provides a product air conditioner, which comprises the device for preventing cold air of the air conditioner.

The embodiment of the disclosure provides a storage medium storing computer executable instructions configured to perform the above method for air conditioning cold air prevention.

The storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," "the," and "the" (the) are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this disclosure is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, when used in the present disclosure, the terms "comprises," "comprising," and/or variations thereof, mean that the recited features, integers, steps, operations, elements, and/or components are present, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus that includes the element. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.

Those of skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims

1. The method for preventing cold air of the air conditioner is characterized in that an air outlet of an indoor unit of the air conditioner is provided with an electric heating part, the electric heating part is provided with a plurality of heating sections which are sequentially arranged from top to bottom and can be independently controlled, and different heating sections correspond to different preset areas of the air outlet; the method comprises the following steps:

acquiring parameters of the air conditioner under the condition that the air conditioner starts to operate in a heating mode;

Determining a heating strategy of each heating section according to the parameters of the air conditioner;

Determining one or more operation strategies of an air deflector, a compressor and a fan according to the heating strategy of each heating section;

controlling each heating section to execute a corresponding heating strategy, and controlling one or more of an air deflector, a compressor and a fan to execute a corresponding operation strategy so as to enable the air outlet temperature of each area to reach a proper temperature, and further enabling the overall air outlet temperature of an air outlet of the air conditioner to be balanced;

Wherein, the operation strategy of one or more of the air deflector, the compressor and the fan is determined, and the method comprises the following steps:

Under the condition that the power gear of the heating section is reduced and the number of fans is one, calculating the ratio of the number of the heating sections with the lowest power gear to the total number of the heating sections;

determining one or more of an air deflector opening angle, a compressor frequency and a fan rotating speed according to the ratio;

the larger the ratio is, the larger the opening angle of the air deflector and/or the rotating speed of the fan is.

2. The method of claim 1, wherein determining a heating strategy for each heating segment based on parameters of the air conditioner comprises:

determining a target heating section according to the parameters of the air conditioner;

and determining the power gear of the target heating section according to the parameters of the air conditioner.

3. The method of claim 2, wherein the parameters of the air conditioner include: the operation time of the heating mode and the upper and lower relative positions of each preset area; the determining the target heating section according to the parameters of the air conditioner comprises the following steps:

Under the condition that the operation time length is smaller than the time length threshold value, determining that each heating section is a target heating section;

and under the condition that the operation duration is greater than or equal to the duration threshold, determining the heating section corresponding to the preset area from top to bottom as a target heating section controlled in sequence.

4. A method according to claim 3, wherein the parameters of the air conditioner include: the operation time of the heating mode; the determining the power gear of the target heating section according to the parameters of the air conditioner comprises the following steps:

Under the condition that the operation time length is smaller than the time length threshold value, determining that the power gear of the target heating section is the highest gear;

Determining the power gear of a target heating section controlled first under the condition that the operation time length is greater than or equal to a time length threshold value;

And determining the power gear of the next target heating section according to the power gear of the current target heating section.

5. The method according to claim 2, wherein each preset area is provided with a temperature sensor, respectively; the parameters of the air conditioner include: the air outlet temperature of each preset area; the determining the target heating section according to the parameters of the air conditioner comprises the following steps:

Determining a target area according to the air outlet temperature of each preset area;

and determining the heating section corresponding to the target area as a target heating section.

6. The method of claim 5, wherein determining the power level of the target heating segment based on the parameters of the air conditioner comprises:

and determining the power gear corresponding to the current air outlet temperature of the target heating section according to the association relation between the air outlet temperature and the power gear.

7. The method of claim 1, wherein determining an operational strategy of a blower further comprises:

determining the number and positions of fans;

And under the condition that the number of the fans is a plurality of and the positions are different, determining the operation strategy of the fans according to the positions and the heating strategy of the fans.

8. The method of claim 7, wherein the blower comprises: a first fan positioned above and a second fan positioned below; determining an operation strategy of the fan according to the position and the heating strategy of the fan, wherein the operation strategy comprises the following steps:

When the power gears of the heating sections B1 to Bm are all reduced to the lowest gear, determining that the rotating speed of the first fan is increased, and keeping the rotating speed of the second fan to be the lowest rotating speed; when the power gears of the heating sections Bm+1 to Bn are all reduced to the lowest gear, determining that the rotating speed of the first fan is increased, and the rotating speed of the second fan is increased; or alternatively

When the air outlet temperatures of the preset areas A1 to Am are T3 and less than or equal to T, determining that the rotation speed of the first fan is increased, and keeping the rotation speed of the second fan to be the lowest rotation speed; when the air outlet temperatures of the preset areas Am+1 to An are T3 and less than or equal to T, determining that the rotation speed of the first fan is increased and the rotation speed of the second fan is increased;

Wherein n is the total number of heating sections/preset areas, and m is more than or equal to n 2/3; t3 is a third temperature threshold, and T is the air outlet temperature.

9. An apparatus for air conditioning cold air protection comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for air conditioning cold air protection of any one of claims 1 to 8 when the program instructions are run.

10. An air conditioner, comprising:

The indoor unit is provided with an air outlet;

The electric heating part is arranged at the air outlet; wherein,

The air outlet is provided with different preset areas, the electric heating part is provided with a plurality of heating sections which can be controlled independently, and the different heating sections correspond to the different preset areas; and, a step of, in the first embodiment,

The apparatus for air conditioning cold air prevention according to claim 9.