CN113669881B - Method and device for controlling fresh air machine and intelligent fresh air machine - Google Patents
Method and device for controlling fresh air machine and intelligent fresh air machine Download PDFInfo
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- CN113669881B CN113669881B CN202110982946.2A CN202110982946A CN113669881B CN 113669881 B CN113669881 B CN 113669881B CN 202110982946 A CN202110982946 A CN 202110982946A CN 113669881 B CN113669881 B CN 113669881B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The application relates to the technical field of intelligent household appliances and discloses a method for controlling a fresh air machine. The method for controlling fresh air comprises the following steps: obtaining an indoor pollution index and an outdoor pollution index; obtaining a first set rotating speed of an air inlet fan positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index and a second set rotating speed of an air exhaust fan negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index; the influence of the indoor pollution index on the first set rotating speed is greater than the influence of the outdoor pollution index on the first set rotating speed, and the influence of the indoor pollution index on the second set rotating speed is less than the influence of the outdoor pollution index on the second set rotating speed; controlling the air intake fan according to a first set rotating speed, and controlling the air exhaust fan according to a second set rotating speed. By adopting the method for controlling the fresh air machine, the energy consumption and the air exchange speed of the fresh air machine can be balanced. The application also discloses a new fan of device and intelligence for controlling new fan.
Description
Technical Field
The application relates to the technical field of intelligent household appliances, for example, to a method and a device for controlling a fresh air machine and the intelligent fresh air machine.
Background
At present, a fresh air machine has the function of exchanging indoor air and outdoor air, and adopts the design of an air inlet duct and an air exhaust duct, so that indoor air can be exhausted from the indoor to the outdoor through the air exhaust duct, outdoor air can enter the indoor through the air inlet duct, and the air entering the indoor is filtered and purified through the air inlet duct. Normally, the ratio of the inlet air to the exhaust air is fixed.
In order to reduce energy consumption, the air intake and exhaust proportion can be set to be that the air exhaust volume of indoor air is larger than the fresh air intake volume under the condition that the indoor air quality is poorer than the outdoor air quality, so that the indoor air pressure is in a micro-negative pressure state; under the condition that the outdoor air quality is worse than the indoor air quality, setting the air intake and exhaust proportion to be that the indoor air exhaust volume is smaller than the fresh air intake volume, so that the indoor air pressure is in a micro-positive pressure state; and after detecting the indoor air quality and the outdoor air quality, calculating an air quality difference value, wherein the absolute value of the difference value is in direct proportion to the difference value of the set air exhaust quantity and the set fresh air suction quantity.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the prior art can ensure positive pressure or negative pressure in a room, but has poor regulation capability on the ventilation speed of indoor air.
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 to be a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a method and a device for controlling a fresh air fan and an intelligent fresh air fan, and aims to solve the technical problem that the air change speed of indoor air is poor in adjusting capacity in the prior art.
In some embodiments, a method for controlling a fresh air machine includes: obtaining an indoor pollution index and an outdoor pollution index; obtaining a first set rotational speed of an intake fan positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index, and a second set rotational speed of an exhaust fan negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index; wherein the influence of the indoor pollution index on the first set rotating speed is greater than the influence of the outdoor pollution index on the first set rotating speed, and the influence of the indoor pollution index on the second set rotating speed is less than the influence of the outdoor pollution index on the second set rotating speed; and controlling the air inlet fan according to the first set rotating speed, and controlling the air exhaust fan according to the second set rotating speed.
Optionally, obtaining a first set rotation speed positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index, and a second set rotation speed negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index, includes: obtaining a first product of the indoor pollution index and a first coefficient and a second product of the outdoor pollution index and a second coefficient, and determining a first sum of the first product and the second product as the first set rotating speed, wherein the first coefficient is greater than the second coefficient; and obtaining a third product of the indoor pollution index and a third coefficient and a fourth product of the outdoor pollution index and a fourth coefficient, and determining the reciprocal of a second sum of the third product and the fourth product as the second set rotating speed, wherein the fourth coefficient is greater than the third coefficient.
Optionally, before obtaining the first set rotating speed and the second set rotating speed, the method for controlling the fresh air machine further comprises: obtaining a ratio of the first set rotation speed to the second set rotation speed, which is positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index.
Optionally, according to the first rotational speed control of setting for the air inlet fan, and according to the second rotational speed control of setting for the air exhaust fan, include: obtaining a current pressure difference value between a current indoor pressure and a current outdoor pressure under the condition that the indoor pollution index is less than or equal to a first set pollution index and the outdoor pollution index is less than or equal to a second set pollution index; and controlling the air inlet fan and the air exhaust fan according to a preset pressure difference value and the current pressure difference value so that the absolute value of the current pressure difference value reaches the preset pressure difference value.
Optionally, control the air intake fan and the air exhaust fan according to a preset pressure difference value and the current pressure difference value, include: when the current indoor pressure is higher than the current outdoor pressure and the absolute value of the current pressure difference is smaller than the preset pressure, increasing the rotating speed of the air inlet fan; if the absolute value of the current pressure difference does not reach the preset pressure difference within a first set time period, reducing the rotating speed of the exhaust fan; under the condition that the current indoor pressure is lower than the current outdoor pressure and the absolute value of the current pressure difference is lower than the preset pressure, the rotating speed of the exhaust fan is increased; and if the absolute value of the current pressure difference does not reach the preset pressure difference within a first set time, reducing the rotating speed of the air inlet fan.
Optionally, the determining that the current pressure difference value reaches the preset pressure difference value includes: under the condition of improving the absolute value of the current pressure difference, if the duration of the current pressure difference is greater than or equal to a second set duration, determining that the absolute value of the current pressure difference reaches the preset pressure difference;
and under the condition of reducing the absolute value of the current pressure difference, if the duration of the current pressure difference is less than or equal to the preset pressure difference and is greater than or equal to a second set duration, determining that the absolute value of the current pressure difference reaches the preset pressure difference.
Optionally, in case the indoor pollution index is smaller than a third set pollution index, obtaining a first set rotation speed positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index, and a second set rotation speed negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index;
and under the condition that the indoor pollution index is greater than or equal to a third set pollution index, determining the first set rotating speed as the maximum rotating speed of the air inlet fan, and determining the second set rotating speed as the maximum rotating speed of the air exhaust fan.
In some embodiments, an apparatus for controlling a fresh air machine includes a first obtaining module, a second obtaining module, and a control module, wherein the first obtaining module is configured to obtain an indoor pollution index and an outdoor pollution index; the second obtaining module is configured to obtain a first set rotation speed positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index, and a second set rotation speed negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index; the control module is configured to control the air intake fan according to the first set rotation speed and control the air exhaust fan according to the second set rotation speed.
The method and the device for controlling the fresh air machine and the intelligent fresh air machine provided by the embodiment of the disclosure can realize the following technical effects:
under the condition that both the indoor pollution index and the outdoor pollution index are low, the first set rotating speed of the air inlet fan is low, and the second set rotating speed of the air exhaust fan is high, so that negative pressure can be maintained indoors, outdoor air enters the indoors through room gaps, and energy consumption of a fresh air fan can be reduced; under the condition that both the indoor pollution index and the outdoor pollution index are high, the first set rotating speed of the air inlet fan is high, the second set rotating speed of the air exhaust fan is low, high positive pressure can be maintained indoors, on one hand, more purified air can enter indoors, on the other hand, air entering indoors from outdoors through room gaps can be reduced, and finally the indoor pollution index can be quickly reduced; under the conditions that the indoor pollution index is small and the outdoor pollution index is large, the influence of the indoor pollution index on the first set rotating speed is larger than the influence of the outdoor pollution index on the first set rotating speed, so that the first set rotating speed is small, the influence of the indoor pollution index on the second set rotating speed is smaller than the influence of the outdoor pollution index on the second set rotating speed, so that the second set rotating speed is small, the air exchange speed of the fresh air fan can be reduced, and the energy consumption of the fresh air fan is reduced; the indoor pollution index is large, the outdoor pollution index is small, the influence of the indoor pollution index on the first set rotating speed is larger than the influence of the outdoor pollution index on the first set rotating speed, so the first set rotating speed is larger, the influence of the indoor pollution index on the second set rotating speed is smaller than the influence of the outdoor pollution index on the second set rotating speed, so the second set rotating speed can be larger, the air exchange speed of the fresh air fan can be improved, and the speed of purifying indoor air is improved. Therefore, according to the technical scheme, the ventilation speed of the indoor air can be adjusted according to the indoor pollution index and the outdoor pollution index, so that the energy consumption and the ventilation speed of the fresh air fan are balanced.
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 in drawings corresponding to, and not limiting to, embodiments in which elements having the same reference number designation are identified as similar elements, and in which:
FIG. 1 is a schematic diagram of a method for controlling a fresh air machine provided by an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of an apparatus for controlling a fresh air machine according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of an apparatus for controlling a fresh air machine according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. 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 be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "include" 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 specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
Fig. 1 is a schematic diagram of a method for controlling a fresh air machine according to an embodiment of the present disclosure. The method for controlling fresh air can be executed by a controller of a fresh air machine, or can be executed by a controller of other household appliances with fresh air functions, such as a controller of a fresh air conditioner.
Referring to fig. 1, a method for controlling a fresh air machine includes:
s101, obtaining an indoor pollution index and an outdoor pollution index.
The pollution index here may be a carbon dioxide concentration, or may be a Fine Particulate Matter (PM 2.5) concentration. The indoor pollution index is of the same type as the outdoor pollution index: the outdoor pollution index is the outdoor carbon dioxide concentration under the condition that the indoor pollution index is the indoor carbon dioxide concentration; in the case where the indoor pollution index is the indoor PM2.5 concentration, the outdoor pollution index is the outdoor PM2.5 concentration.
The indoor pollution index can be detected by a corresponding sensor, such as a carbon dioxide concentration sensor or a PM2.5 concentration sensor, and the sensor can be arranged at any position in a room, or can be arranged at a return air inlet of a fresh air fan.
The outdoor pollution index may be obtained through a network, or may be obtained through detection of a corresponding sensor disposed at an air inlet (fresh air inlet) of the fresh air blower, such as a carbon dioxide concentration sensor or a PM2.5 concentration sensor.
The types of the pollution indexes listed in the embodiments of the present disclosure are only exemplary, and are not specifically limited, and those skilled in the art may select an appropriate type of the pollution index according to an actual application scenario.
S102, obtaining a first set rotating speed of an air inlet fan positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index, and a second set rotating speed of an air outlet fan negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index.
The influence of the indoor pollution index on the first set rotating speed is larger than the influence of the outdoor pollution index on the first set rotating speed, and the influence of the indoor pollution index on the second set rotating speed is smaller than the influence of the outdoor pollution index on the second set rotating speed.
The influence of the indoor pollution index on the first set rotating speed, which is greater than the influence of the outdoor pollution index on the first set rotating speed, means that: the increasing value of the first set rotating speed corresponding to the indoor pollution exponential increase unit concentration is larger than the increasing value of the first set rotating speed corresponding to the outdoor pollution exponential increase unit concentration. The influence of the indoor pollution index on the second set rotating speed, which is smaller than the influence of the outdoor pollution index on the second set rotating speed, means that: the indoor pollution index reduces the increasing value of the second set rotating speed corresponding to the unit concentration, and is larger than the increasing value of the second set rotating speed corresponding to the unit concentration reduced outdoor concentration.
Optionally, before obtaining the first set rotation speed and the second set rotation speed, the method for controlling the fresh air machine further includes: and obtaining the ratio of the first set rotating speed to the second set rotating speed which is positively correlated with the indoor pollution index and is positively correlated with the outdoor pollution index.
Under the condition that the ratio of the first set rotating speed to the second set rotating speed is greater than 1, the current indoor pressure is higher than the current outdoor pressure, and the larger the ratio of the first set rotating speed to the second set rotating speed is, the larger the difference value of the current pressure between the indoor pressure and the current outdoor pressure is; in the case that the ratio of the first set rotating speed to the second set rotating speed is greater than 1, the current indoor pressure is lower than the current outdoor pressure, and the smaller the ratio of the first set rotating speed to the second set rotating speed, the larger the difference between the current outdoor pressure and the current indoor pressure. That is, the larger the ratio of the first set rotation speed to the second set rotation speed, the easier it is to maintain a high pressure in the room; the smaller the ratio of the first set rotation speed to the second set rotation speed, the easier it is to maintain a low pressure in the room.
In some application scenes, the indoor pollution index is indoor PM2.5 concentration, the outdoor pollution index is outdoor PM2.5 concentration, and the indoor PM2.5 concentration is less than or equal to 35 mu g/m 3 And the outdoor PM2.5 concentration is less than or equal to 50 mu g/m 3 Determining the ratio of the first set rotation speed to the second set rotation speed to be 1:2; PM2.5 concentration in the room is more than 35 mu g/m 3 And 50 [ mu ] g/m or less 3 Outdoor PM2.5 concentration is more than 50 mu g/m 3 And less than or equal to 100 [ mu ] g/m 3 Determining the ratio of the first set rotation speed to the second set rotation speed to be 1:1; PM2.5 concentration in the room is more than 50 mu g/m 3 Outdoor PM2.5 concentration is more than 50 mu g/m 3 And less than or equal to 100 [ mu ] g/m 3 In the case of (2), determining that the ratio of the first set rotation speed to the second set rotation speed is 2:1; the PM2.5 concentration is more than 50 mu g/m < 3 > indoors and the PM2.5 concentration is more than 100 mu g/m < outdoors > 3 And less than or equal to 150 [ mu ] g/m 3 In the case of (1), is determinedThe ratio of the first set rotational speed to the second set rotational speed is 3:1.
further, the first set rotation speed positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index, and the second set rotation speed negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index may be obtained by: obtaining a first product of the indoor pollution index and a first coefficient and a second product of the outdoor pollution index and a second coefficient, and determining a first sum of the first product and the second product as a first set rotating speed; obtaining a third product of the indoor pollution index and a third coefficient and a fourth product of the outdoor pollution index and a fourth coefficient, and determining the reciprocal of a second sum of the third product and the fourth product as a second set rotating speed; wherein the first coefficient is greater than the second coefficient and the fourth coefficient is greater than the third coefficient.
Thus, the accurate first set rotating speed and the second set rotating speed can be obtained.
The specific values of the first coefficient, the second coefficient, the third coefficient and the fourth coefficient are all related to the types of the indoor pollution index and the outdoor pollution index, for example, the specific values of the first coefficient, the second coefficient, the third coefficient and the fourth coefficient are different in an application scenario in which the indoor pollution index is indoor carbon dioxide concentration and the outdoor pollution index is outdoor carbon dioxide concentration, and an application scenario in which the indoor pollution index is indoor PM2.5 concentration and the outdoor pollution index is outdoor PM2.5 concentration.
The larger the first coefficient or the smaller the second coefficient is, the more favorable the speed of purifying indoor air is, but the shorter the service life of a filter device in the fresh air fan is; the smaller the third coefficient or the larger the fourth coefficient, the better the life of the filter device of the new fan, but at the same time, the slower the speed of purifying the indoor air, so those skilled in the art can determine the appropriate first coefficient, second coefficient, third coefficient and fourth coefficient according to the requirements on the service life of the filter device in the new fan and the speed of purifying the indoor air.
In the case where the type of the pollution index is other than the carbon dioxide concentration and the PM2.5 concentration, a person skilled in the art may select the corresponding first coefficient, second coefficient, third coefficient, and fourth coefficient.
In addition, the second set rotation speed is determined to approach zero when the outdoor pollution index is greater than the maximum outdoor pollution index. Taking the outdoor pollution index as the outdoor PM2.5 concentration for example, in the case that the outdoor PM2.5 concentration is greater than the maximum set outdoor PM2.5 concentration, the second set rotating speed is determined to approach zero, and the maximum set outdoor PM2.5 concentration can be 90 [ mu ] g/m 3 、100μg/m 3 Or 110. Mu.g/m 3 Therefore, enough positive pressure in the room can be ensured, and the permeation of outdoor pollutants is reduced.
Optionally, in case the indoor pollution index is smaller than the third set pollution index, obtaining a first set rotation speed positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index, and a second set rotation speed negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index; and under the condition that the indoor pollution index is greater than or equal to a third set pollution index, determining the first set rotating speed as the maximum rotating speed of the air inlet fan, and determining the second set rotating speed as the maximum rotating speed of the air exhaust fan.
The third set pollution index here refers to a pollution index which is uncomfortable for the user or easily causes damage to the user's body, and is exemplified here by the PM2.5 concentration, for example, the third set pollution index may be 120 μ g/m 3 、125μg/m 3 Or 130. Mu.g/m 3 . Under the condition that indoor pollution index is greater than or equal to the third settlement pollution index, no matter outdoor pollution index height this moment, all need reduce indoor pollution index fast, the air intake fan moves with maximum rotational speed this moment, is convenient for send into a large amount of air that purify fast indoor, and the fan of airing exhaust moves with maximum rotational speed, is convenient for discharge the air that indoor pollution index is high fast outdoor, can reduce indoor pollution index fast like this.
S103, controlling the air inlet fan according to the first set rotating speed, and controlling the air exhaust fan according to the second set rotating speed.
For example, the rotation speed of the air inlet fan is adjusted to a first set rotation speed, and the rotation speed of the air outlet fan is adjusted to a second set rotation speed.
Under the condition that both the indoor pollution index and the outdoor pollution index are low, the first set rotating speed of the air inlet fan is low, and the second set rotating speed of the air exhaust fan is high, so that negative pressure can be maintained indoors, outdoor air enters the indoors through room gaps, and energy consumption of a fresh air fan can be reduced; under the condition that both the indoor pollution index and the outdoor pollution index are high, the first set rotating speed of the air inlet fan is high, the second set rotating speed of the air exhaust fan is low, high positive pressure can be maintained indoors, on one hand, more purified air can enter indoors, on the other hand, air entering indoors from outdoors through room gaps can be reduced, and finally the indoor pollution index can be quickly reduced; under the conditions that the indoor pollution index is small and the outdoor pollution index is large, the influence of the indoor pollution index on the first set rotating speed is larger than the influence of the outdoor pollution index on the first set rotating speed, so that the first set rotating speed is small, the influence of the indoor pollution index on the second set rotating speed is smaller than the influence of the outdoor pollution index on the second set rotating speed, so that the second set rotating speed is small, the air exchange speed of the fresh air fan can be reduced, and the energy consumption of the fresh air fan is reduced; the indoor pollution index is large, the outdoor pollution index is small, the influence of the indoor pollution index on the first set rotating speed is larger than the influence of the outdoor pollution index on the first set rotating speed, so the first set rotating speed is larger, the influence of the indoor pollution index on the second set rotating speed is smaller than the influence of the outdoor pollution index on the second set rotating speed, so the second set rotating speed can be larger, the air exchange speed of the fresh air fan can be improved, and the speed of purifying indoor air is improved. Therefore, according to the technical scheme, the ventilation speed of the indoor air can be adjusted according to the indoor pollution index and the outdoor pollution index, so that the energy consumption and the ventilation speed of the fresh air fan are balanced.
"higher", "lower", "larger" and "smaller" in the embodiments of the present disclosure are relative to other values of the present parameter, for example, one indoor pollution index is lower, meaning that there are also other indoor pollution indexes higher than the one indoor pollution index; one indoor pollution index is higher, which means that other indoor pollution indexes lower than the one indoor pollution index are also present; one first set rotation speed is larger, which means that other first set rotation speeds smaller than the one first set rotation speed exist; a first set rotational speed is lower, meaning that there are also other first set rotational speeds greater than the one first set rotational speed. Here, "higher", "lower", "larger" and "smaller" in the embodiments of the present disclosure are exemplarily described with higher and lower indoor pollution indexes and larger and smaller first set rotational speeds, and other parameters "higher", "lower", "larger" and "smaller" may be understood according to the exemplary description, and are not described in detail here.
Optionally, in case that the indoor pollution index is greater than a first set pollution index, or the outdoor pollution index is greater than a second set pollution index, obtaining a first set rotation speed of the air intake fan positively correlated to the indoor pollution index and positively correlated to the outdoor pollution index, and a second set rotation speed of the air exhaust fan negatively correlated to the indoor pollution index and negatively correlated to the outdoor pollution index, and controlling the air intake fan according to the first set rotation speed and controlling the air exhaust fan according to the second set rotation speed; and under the condition that the indoor pollution index is less than or equal to a first set pollution index and the outdoor pollution index is less than a second set pollution index, obtaining the current pressure difference value between the current indoor pressure and the current outdoor pressure, and controlling the air inlet fan and the air exhaust fan according to the preset pressure difference value and the current pressure difference value to enable the absolute value of the current pressure difference value to reach the preset pressure difference value.
Wherein the first set pollution index refers to a pollution index harmless to human body, and the second set pollution index refers to a pollution index harmless to human body, for example, the first set pollution index may be 10 μ g/m 3 、15μg/m 3 、20μg/m 3 、25μg/m 3 、30μg/m 3 Or 35. Mu.g/m 3 The second set contamination index may be 10 μ g/m 3 、15μg/m 3 、20μg/m 3 、25μg/m 3 、30μg/m 3 Or 35. Mu.g/m 3 。
Under the condition that the indoor pollution index is smaller than or equal to the first set pollution index and the outdoor pollution index is smaller than or equal to the second set pollution index, the air inlet fan and the air exhaust fan are strictly controlled to exchange air, so that the influence on health is not large, under the condition, a user is generally used for breathing outside air, or the air in a room is breathed, the outdoor negative pressure is continuously maintained at the moment, the use experience of the user is not facilitated, the current pressure difference value between the current indoor pressure and the current outdoor pressure is controlled at the moment, the user can directly breathe outdoor air or breathe filtered air, and the use experience of the user is favorably improved.
In some application scenarios, the preset pressure difference value may be determined as follows: obtaining a current season, for example, obtaining the current season through a network, or determining the current season by detecting an indoor and outdoor temperature difference, determining the current season as a spring and autumn season if the indoor and outdoor temperature difference is less than or equal to a set temperature, and determining the current season as a summer and winter season if the indoor and outdoor temperature difference is greater than the set temperature, wherein the set temperature may be 3 ℃, 5 ℃ or 7 ℃; obtaining a preset pressure difference value corresponding to the current season, for example, the preset pressure difference value corresponding to spring and autumn is-20 Pa, -30Pa or-40 Pa, the preset pressure difference value of-20 Pa means that the indoor pressure is 20Pa lower than the outdoor pressure, the preset pressure difference value of-30 Pa means that the indoor pressure is 30Pa lower than the outdoor pressure, and the preset pressure difference value of-40 Pa means that the indoor pressure is 40Pa lower than the outdoor pressure; the preset pressure difference value in summer and winter is 20Pa, 30Pa or 40Pa, so that on the basis of saving energy of the fresh air fan, a user can easily and directly breathe outdoor air in spring and autumn, and the user experience is improved because the respiratory tract easily passes through the filtered outdoor air in summer and winter.
According to predetermineeing pressure difference and current pressure difference control air intake fan and the fan of airing exhaust, can include: under the condition that the current indoor pressure is higher than the current outdoor pressure and the absolute value of the current pressure difference is smaller than the preset pressure, the rotating speed of the air inlet fan is increased, and if the absolute value of the current pressure difference does not reach the preset pressure difference within the first set time, the rotating speed of the air exhaust fan is reduced; and under the conditions that the current indoor pressure is lower than the current outdoor pressure and the absolute value of the current pressure difference is lower than the preset pressure, the rotating speed of the air exhaust fan is increased, and if the absolute value of the current pressure difference does not reach the preset pressure difference within the first set time, the rotating speed of the air inlet fan is reduced.
Therefore, the current pressure difference value can reach the preset pressure difference value quickly.
Optionally, the determining that the current pressure difference value reaches the preset pressure difference value includes: under the condition of improving the absolute value of the current pressure difference, if the duration of the current pressure difference is greater than or equal to a second set duration, determining that the absolute value of the current pressure difference reaches the preset pressure difference; and under the condition of reducing the absolute value of the current pressure difference, if the duration of the current pressure difference is less than or equal to the preset pressure difference and is greater than or equal to a second set duration, determining that the absolute value of the current pressure difference reaches the preset pressure difference. The second set time is shorter than the first set time, the power of the new fan is larger, and/or the volume of the room is smaller, the difference value between the first set time and the second set time is smaller.
This facilitates maintaining the current pressure difference at the preset pressure difference.
In addition, if the current pressure difference value still does not reach the preset pressure difference value within a third set time period after the rotating speed of the air exhaust fan is reduced or the rotating speed of the air inlet fan is reduced, the filter screen is prompted to be replaced. Make the new trend more intelligent. The third set time period here may be 5min, 6min, 7min, 8min, 9min or 10min.
Fig. 2 is a schematic diagram of an apparatus for controlling a fresh air machine according to an embodiment of the present disclosure. The device for controlling the fresh air machine is realized in a software mode, a hardware mode or a combination mode of the software mode and the hardware mode.
As shown in fig. 2, the device for controlling the fresh air machine includes a first obtaining module 21, a second obtaining module 22 and a control module 23;
the first obtaining module 21 is configured to obtain an indoor pollution index and an outdoor pollution index;
the second obtaining module 22 is configured to obtain a first set rotation speed positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index, and a second set rotation speed negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index; the influence of the indoor pollution index on the first set rotating speed is greater than the influence of the outdoor pollution index on the first set rotating speed, and the influence of the indoor pollution index on the second set rotating speed is less than the influence of the outdoor pollution index on the second set rotating speed;
the control module 23 is configured to control the intake fan according to a first set rotational speed and the exhaust fan according to a second set rotational speed.
Optionally, the second obtaining module comprises a first obtaining unit, a second obtaining unit and a control unit, wherein the first obtaining unit is configured to obtain a first product of the indoor pollution index and a first coefficient, and a second product of the outdoor pollution index and a second coefficient, and determine a first sum of the first product and the second product as the first set rotation speed, wherein the first coefficient is greater than the second coefficient; a second obtaining unit configured to obtain a third product of the indoor pollution index and a third coefficient, and a fourth product of the outdoor pollution index and a fourth coefficient; the determination unit is configured to determine an inverse of a second sum of a third product and a fourth product, which is larger than the third coefficient, as the second set rotation speed.
Optionally, the device for controlling a fresh air machine further comprises a third obtaining module configured to obtain a ratio of the first set rotation speed to the second set rotation speed, which is positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index, before obtaining the first set rotation speed and the second set rotation speed.
Optionally, the control module comprises a third obtaining unit configured to obtain a current pressure difference value between the current indoor pressure and the current outdoor pressure in a case where the indoor pollution index is less than or equal to the first set pollution index and the outdoor pollution index is less than or equal to the second set pollution index; the control unit is configured to control the air intake fan and the air exhaust fan according to the preset pressure difference value and the current pressure difference value so that the absolute value of the current pressure difference value reaches the preset pressure difference value.
Optionally, the control unit is specifically configured to:
under the condition that the current indoor pressure is higher than the current outdoor pressure and the absolute value of the current pressure difference is smaller than the preset pressure, the rotating speed of the air inlet fan is increased; if the absolute value of the current pressure difference does not reach the preset pressure difference within the first set time, reducing the rotating speed of the exhaust fan;
under the condition that the current indoor pressure is lower than the current outdoor pressure and the absolute value of the current pressure difference is lower than the preset pressure, the rotating speed of the exhaust fan is increased; and if the absolute value of the current pressure difference does not reach the preset pressure difference within the first set time, reducing the rotating speed of the air inlet fan.
Optionally, the determining that the current pressure difference value reaches the preset pressure difference value includes: under the condition of improving the absolute value of the current pressure difference, if the duration of the current pressure difference is greater than or equal to the preset pressure difference, determining that the absolute value of the current pressure difference reaches the preset pressure difference;
and under the condition of reducing the absolute value of the current pressure difference, if the duration of the current pressure difference is less than or equal to the preset pressure difference and is greater than or equal to a second set duration, determining that the absolute value of the current pressure difference reaches the preset pressure difference.
Optionally, the second obtaining module is specifically configured to: obtaining a first set rotation speed positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index and a second set rotation speed negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index under the condition that the indoor pollution index is smaller than a third set pollution index; and under the condition that the indoor pollution index is greater than or equal to the third set pollution index, determining the first set rotating speed as the maximum rotating speed of the air inlet fan, and determining the second set rotating speed as the maximum rotating speed of the air exhaust fan.
In some embodiments, an apparatus for controlling a fresh air machine includes a processor and a memory storing program instructions, the processor being configured to, when executing the program instructions, perform the method for controlling a fresh air machine provided by the foregoing embodiments.
Fig. 3 is a schematic diagram of an apparatus for controlling a fresh air machine according to an embodiment of the present disclosure. As shown in fig. 3, the apparatus for controlling a fresh air machine includes:
a processor (processor) 31 and a memory (memory) 32, and may further include a Communication Interface (Communication Interface) 33 and a bus 34. The processor 31, the communication interface 33, and the memory 32 may communicate with each other through the bus 34. The communication interface 33 may be used for information transfer. The processor 31 may invoke logic instructions in the memory 32 to perform the method for controlling a fresh air machine provided by the foregoing embodiments.
Furthermore, the logic instructions in the memory 32 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product.
The memory 32 is a computer readable storage medium, which can be used to store software programs, computer executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 31 executes the functional application and data processing by executing the software program, instructions and modules stored in the memory 32, that is, implements the method in the above-described method embodiment.
The memory 32 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 32 may include high speed random access memory and may also include non-volatile memory.
The embodiment of the disclosure provides an intelligent fresh air machine, which comprises the device for controlling the fresh air machine provided by the embodiment.
The embodiment of the disclosure provides a computer-readable storage medium, which stores computer-executable instructions configured to execute the method for controlling a fresh air machine provided by the foregoing embodiment.
The disclosed embodiments provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the method for controlling a fresh air fan provided by the aforementioned embodiments.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method in the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other media capable of storing program codes, and may also be a transient storage medium.
The above description and the drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify 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. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, 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 phrases "comprising a component of' 8230; \8230;" does not exclude the presence of additional identical elements in any process, method, or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would 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 may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses, and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit may be merely a division of a logical function, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. Units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart 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. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. A method for controlling a fresh air machine, comprising:
obtaining an indoor pollution index and an outdoor pollution index;
obtaining a first set rotational speed of an intake fan positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index, and a second set rotational speed of an exhaust fan negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index; wherein the influence of the indoor pollution index on the first set rotating speed is greater than the influence of the outdoor pollution index on the first set rotating speed, and the influence of the indoor pollution index on the second set rotating speed is less than the influence of the outdoor pollution index on the second set rotating speed; the effect of the indoor pollution index on the first set rotation speed being greater than the effect of the outdoor pollution index on the first set rotation speed means that: the increasing value of the first set rotating speed corresponding to the indoor pollution exponential increase unit concentration is greater than the increasing value of the first set rotating speed corresponding to the outdoor pollution exponential increase unit concentration; the influence of the indoor pollution index on the second set rotation speed being smaller than the influence of the outdoor pollution index on the second set rotation speed means that: the indoor pollution index reduces the increasing value of the second set rotating speed corresponding to the unit concentration, and is greater than the increasing value of the second set rotating speed corresponding to the unit concentration reduced outdoor concentration;
and controlling the air inlet fan according to the first set rotating speed, and controlling the air exhaust fan according to the second set rotating speed.
2. The method according to claim 1, wherein obtaining a first set rotation speed positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index, and a second set rotation speed negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index comprises:
obtaining a first product of the indoor pollution index and a first coefficient and a second product of the outdoor pollution index and a second coefficient, and determining a first sum of the first product and the second product as the first set rotating speed, wherein the first coefficient is greater than the second coefficient;
and obtaining a third product of the indoor pollution index and a third coefficient and a fourth product of the outdoor pollution index and a fourth coefficient, and determining the reciprocal of a second sum of the third product and the fourth product as the second set rotating speed, wherein the fourth coefficient is greater than the third coefficient.
3. The method of claim 1, before obtaining the first set rotational speed and the second set rotational speed, further comprising:
obtaining a ratio of the first set rotation speed to the second set rotation speed, which is positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index.
4. The method of any of claims 1 to 3, wherein controlling the intake air blower according to the first set rotational speed and controlling the exhaust air blower according to the second set rotational speed comprises:
obtaining a current pressure difference value between a current indoor pressure and a current outdoor pressure under the condition that the indoor pollution index is less than or equal to a first set pollution index and the outdoor pollution index is less than or equal to a second set pollution index; and controlling the air inlet fan and the air exhaust fan according to a preset pressure difference value and the current pressure difference value so that the absolute value of the current pressure difference value reaches the preset pressure difference value.
5. The method of claim 4, wherein controlling the intake air blower and the exhaust air blower based on a preset pressure differential value and the current pressure differential value comprises:
when the current indoor pressure is higher than the current outdoor pressure and the absolute value of the current pressure difference is smaller than the preset pressure, increasing the rotating speed of the air inlet fan; if the absolute value of the current pressure difference does not reach the preset pressure difference within a first set time period, reducing the rotating speed of the exhaust fan;
under the condition that the current indoor pressure is lower than the current outdoor pressure and the absolute value of the current pressure difference is lower than the preset pressure, the rotating speed of the exhaust fan is increased; and if the absolute value of the current pressure difference does not reach the preset pressure difference within a first set time period, reducing the rotating speed of the air inlet fan.
6. The method of claim 4, wherein the determination that the current pressure difference value reaches the preset pressure difference value comprises:
under the condition of improving the absolute value of the current pressure difference, if the duration of the current pressure difference is greater than or equal to a second set duration, determining that the absolute value of the current pressure difference reaches the preset pressure difference;
and under the condition of reducing the absolute value of the current pressure difference, if the duration of the current pressure difference is less than or equal to the preset pressure difference and is greater than or equal to a second set duration, determining that the absolute value of the current pressure difference reaches the preset pressure difference.
7. The method according to any one of claims 1 to 3,
obtaining a first set rotation speed positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index and a second set rotation speed negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index in a case where the indoor pollution index is smaller than a third set pollution index;
and under the condition that the indoor pollution index is greater than or equal to a third set pollution index, determining the first set rotating speed as the maximum rotating speed of the air inlet fan, and determining the second set rotating speed as the maximum rotating speed of the air exhaust fan.
8. A device for controlling a fresh air machine, comprising:
a first obtaining module configured to obtain an indoor pollution index and an outdoor pollution index;
a second obtaining module configured to obtain a first set rotation speed positively correlated with the indoor pollution index and positively correlated with the outdoor pollution index, and a second set rotation speed negatively correlated with the indoor pollution index and negatively correlated with the outdoor pollution index; wherein the influence of the indoor pollution index on the first set rotating speed is greater than the influence of the outdoor pollution index on the first set rotating speed, and the influence of the indoor pollution index on the second set rotating speed is less than the influence of the outdoor pollution index on the second set rotating speed; the effect of the indoor pollution index on the first set rotation speed being greater than the effect of the outdoor pollution index on the first set rotation speed means that: the increasing value of the first set rotating speed corresponding to the indoor pollution exponential increase unit concentration is greater than the increasing value of the first set rotating speed corresponding to the outdoor pollution exponential increase unit concentration; the influence of the indoor pollution index on the second set rotating speed, which is smaller than the influence of the outdoor pollution index on the second set rotating speed, means that: the indoor pollution index is reduced, and the increase value of the second set rotating speed corresponding to the unit concentration is larger than the increase value of the second set rotating speed corresponding to the unit concentration reduced outdoor;
a control module configured to control an intake fan according to the first set rotational speed and an exhaust fan according to the second set rotational speed.
9. An apparatus for controlling a fresh air machine comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for controlling a fresh air machine of any of claims 1 to 7 when executing the program instructions.
10. An intelligent ventilator comprising an apparatus for controlling a ventilator as claimed in claim 8 or 9.
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| CN202110982946.2A CN113669881B (en) | 2021-08-25 | 2021-08-25 | Method and device for controlling fresh air machine and intelligent fresh air machine |
| PCT/CN2022/091685 WO2023024574A1 (en) | 2021-08-25 | 2022-05-09 | Method and apparatus for controlling fresh air blower and smart fresh air blower |
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| CN202110982946.2A CN113669881B (en) | 2021-08-25 | 2021-08-25 | Method and device for controlling fresh air machine and intelligent fresh air machine |
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| CN113669881B (en) * | 2021-08-25 | 2022-11-18 | 海尔(深圳)研发有限责任公司 | Method and device for controlling fresh air machine and intelligent fresh air machine |
| CN114294782B (en) * | 2021-12-30 | 2022-12-20 | 珠海格力电器股份有限公司 | Fault detection method, device, air conditioning equipment and storage medium |
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| WO2018061147A1 (en) * | 2016-09-29 | 2018-04-05 | 三菱電機株式会社 | Ventilation system |
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