CN113587263A - Heat dissipation device for driver of outdoor unit of air conditioner and control method - Google Patents
Heat dissipation device for driver of outdoor unit of air conditioner and control method Download PDFInfo
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- CN113587263A CN113587263A CN202110713131.4A CN202110713131A CN113587263A CN 113587263 A CN113587263 A CN 113587263A CN 202110713131 A CN202110713131 A CN 202110713131A CN 113587263 A CN113587263 A CN 113587263A
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 192
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000010586 diagram Methods 0.000 description 8
- 230000005494 condensation Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/18—Heat exchangers specially adapted for separate outdoor units characterised by their shape
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/24—Cooling of electric components
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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
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
Abstract
The invention discloses a heat dissipation device and a control method for a driver of an air conditioner outdoor unit, wherein the device comprises an electric control box, a heat radiator, a driving mechanism, a temperature sensor of a heat dissipation plate of the driver, a temperature sensor in an electric appliance box, a humidity sensor in the electric appliance box and a controller, wherein the controller is configured to: acquiring the air dew point temperature in the electrical box based on the temperature in the electrical box and the humidity in the electrical box; and determining the rotation target angle of the radiating fin based on the temperature of the radiating plate of the driver and the air dew point temperature, so that the high-efficiency heat dissipation of the driver of the outdoor unit of the air conditioner is realized, the alarm shutdown of the driver during high temperature and heavy load is avoided, and the comfort level of a user is improved.
Description
Technical Field
The present disclosure relates to the field of air conditioner control, and more particularly, to a heat dissipation device for a driver of an outdoor unit of an air conditioner and a control method thereof.
Background
In the outdoor unit of the inverter air conditioner, the heat dissipation of a driver is an important technology related to the stable and safe operation of the inverter air conditioner. Under the condition of low-temperature heating, cold air blown out from a heat exchanger of the air conditioner outdoor unit is lower than the temperature of an outdoor environment, the cold air flows through the radiating fins of the driver to cool the driver, but if the load is smaller at the moment, the heat generated by the driver is less, the temperature of the driver is lower than the temperature in the electric control box, condensation is generated, and risks such as short circuit or burnout are caused. If the heat is prevented from being taken too much by reducing the heat sink of the drive, the drive will alarm to shut down due to excessive temperatures under high temperature and high load conditions.
In order to solve the problem, in the prior art, the heat dissipation fins are basically designed to be small, so that the electric components in the driver and the electric control box are not condensed under the low-temperature heating condition. However, the driver generates a large amount of heat under the condition of high temperature and heavy load, the heat cannot be dissipated in time due to the fact that the radiating fins are small, the temperature is too high, in order to prevent the machine from being stopped, the heat generated by driving can be reduced in a mode of reducing the working frequency of the compressor, the capacity of a part of the machine can be lost, and user experience is poor.
Therefore, how to realize the high-efficiency heat dissipation of the driver of the air conditioner outdoor unit and avoid the alarm shutdown of the driver when the driver is in high temperature and heavy load on the premise of not reducing the working capacity of the air conditioner is a technical problem to be solved at present.
Disclosure of Invention
The invention provides a heat radiating device of a driver of an air conditioner outdoor unit, which is used for solving the technical problem that the driver can be alarmed and shut down at high temperature and heavy load when the driver is prevented from being condensed by reducing the heat radiating fins of the driver in the prior art, and comprises the following components:
the electric control box is internally provided with a driver;
the radiator is arranged in the electric control box and used for radiating the heat of the driver;
the heat sink includes:
a heat dissipation plate;
the plurality of radiating fins are movably connected to the radiating plate;
and the driving mechanism is in driving connection with the radiating fins and is used for driving the radiating fins to rotate.
In some embodiments, the drive mechanism comprises:
a stepping motor;
one end of the crank shaft is connected with the stepping motor to drive the crank shaft to rotate,
the end part of the connecting rod is connected to the other end of the crankshaft, is connected with the radiating fins and is used for driving the radiating fins to rotate;
a driving plate for controlling rotation of the stepping motor;
in some embodiments, further comprising:
the driver radiating plate temperature sensor is used for detecting the temperature of the driver radiating plate;
the temperature sensor in the electrical box is used for detecting the temperature in the electrical box;
the humidity sensor in the electrical appliance box is used for detecting the humidity in the electrical appliance box;
a controller configured to:
acquiring the air dew point temperature in the electrical box based on the temperature in the electrical box and the humidity in the electrical box;
and determining the rotation target angle of the radiating fin based on the temperature of the driver radiating plate and the air dew point temperature.
In some embodiments, the controller is configured to:
when the temperature of the driver heat dissipation plate is less than or equal to the air dew point temperature, closing the heat dissipation fins;
when the temperature of the driver heat dissipation plate is greater than the air dew point temperature, a rotation target angle of the heat dissipation fin is determined based on the temperature of the driver heat dissipation plate.
In some embodiments, the controller is configured to:
when the temperature of the driver heat dissipation plate is greater than or equal to a first preset temperature, opening the heat dissipation fins;
and when the temperature of the driver heat dissipation plate is lower than a first preset temperature, determining the rotation target angle of the heat dissipation fin based on the temperature of the driver heat dissipation plate and the temperature in the electric box.
In some embodiments, the determining the target rotation angle of the heat dissipation fin based on the temperature of the heat dissipation plate of the driver and the temperature in the electrical box is specifically determined according to the following formula:
A＝P*ΔT(n)+D(ΔT(n)－ΔT(n-1))；
wherein, a is a rotation target angle of the heat dissipation fin, Δ T (n) is a difference between the temperature of the driver heat dissipation plate at the current moment and the temperature in the electrical box, Δ T (n-1) is a difference between the temperature of the driver heat dissipation plate at the previous moment and the temperature in the electrical box, P is a preset proportionality constant, and D is a preset differential constant.
In some embodiments, the controller is configured to:
when the rotating target angle is smaller than or equal to a first preset angle, closing the radiating fins;
when the rotating target angle is larger than a first preset angle and smaller than a second preset angle, adjusting the radiating fins to the rotating target angle;
and when the rotating target angle is larger than or equal to the second preset angle, the radiating fins are opened.
Correspondingly, the invention also provides a heat dissipation control method for the driver of the outdoor unit of the air conditioner, which is characterized in that the method is applied to the heat dissipation device of the driver of the outdoor unit of the air conditioner, which comprises the following steps:
acquiring the air dew point temperature in the electrical box based on the temperature in the electrical box and the humidity in the electrical box, wherein the temperature in the electrical box is acquired through a temperature sensor in the electrical box, and the humidity in the electrical box is acquired through a humidity sensor in the electrical box;
and determining the rotation target angle of the radiating fin based on the temperature of the driver radiating plate and the air dew point temperature, wherein the temperature of the driver radiating plate is acquired through the driver radiating plate temperature sensor.
In some embodiments, the target rotation angle of the heat dissipation fin is determined based on the temperature of the heat dissipation plate of the driver and the air dew point temperature, specifically:
when the temperature of the driver heat dissipation plate is less than or equal to the air dew point temperature, closing the heat dissipation fins;
when the temperature of the driver heat dissipation plate is greater than the air dew point temperature, a rotation target angle of the heat dissipation fin is determined based on the temperature of the driver heat dissipation plate.
In some embodiments, when the temperature of the driver heat dissipation plate is greater than the air dew point temperature, the target rotation angle of the heat dissipation fin is determined based on the temperature of the driver heat dissipation plate, specifically:
when the temperature of the driver heat dissipation plate is greater than or equal to a first preset temperature, opening the heat dissipation fins;
and when the temperature of the driver heat dissipation plate is lower than a first preset temperature, determining the rotation target angle of the heat dissipation fin based on the temperature of the driver heat dissipation plate and the temperature in the electric box.
Compared with the prior art, the method has the following beneficial effects:
the invention discloses a heat dissipation device and a control method for a driver of an air conditioner outdoor unit, wherein the device comprises an electric control box, a heat radiator, a driving mechanism, a temperature sensor of a heat dissipation plate of the driver, a temperature sensor in an electric appliance box, a humidity sensor in the electric appliance box and a controller, wherein the controller is configured to: acquiring the air dew point temperature in the electrical box based on the temperature in the electrical box and the humidity in the electrical box; and determining the rotation target angle of the radiating fin based on the temperature of the radiating plate of the driver and the air dew point temperature, so that the high-efficiency heat dissipation of the driver of the outdoor unit of the air conditioner is realized, the alarm shutdown of the driver during high temperature and heavy load is avoided, and the comfort level of a user is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a heat dissipation device of an outdoor unit driver of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a driver heat dissipation plate of a heat dissipation device of an outdoor unit driver of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a crankshaft of a heat dissipation device of an outdoor unit driver of an air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a connecting rod of a heat dissipation device of an outdoor unit driver of an air conditioner according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a heat dissipating fin of a heat dissipating device of an outdoor unit driver of an air conditioner according to an embodiment of the present invention;
fig. 6 is a schematic view illustrating an effect of a target rotation angle of a heat dissipation fin according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating a method for controlling heat dissipation of a driver of an outdoor unit of an air conditioner according to an embodiment of the present invention.
Description of the reference numerals
1. The device comprises a heat dissipation plate, 2, heat dissipation fins, 3, a connecting rod, 4, a crank, 5, a stepping motor, 6, a motor fixing support, 7, a driving plate, 8, a driver heat dissipation plate temperature sensor, 9, a temperature sensor in an electrical appliance box, 10, a humidity sensor in the electrical appliance box, 11 and a controller.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
To further describe the aspects of the present application, in an example of the present application, the heat sink device for an outdoor unit driver of an air conditioner includes:
the electric control box is internally provided with a driver;
the radiator is arranged in the electric control box and used for radiating the heat of the driver;
the heat sink includes:
a heat dissipation plate;
the plurality of radiating fins are movably connected with the radiating plate;
and the driving mechanism is in driving connection with the radiating fins and is used for driving the radiating fins to rotate.
In the embodiment of the present application, as described in the background art, the heat dissipation of the driver is an important technology related to the stable and safe operation of the inverter air conditioner. Under the condition of low-temperature heating, cold air blown out from a heat exchanger of the air conditioner outdoor unit is lower than the temperature of an outdoor environment, the cold air flows through the radiating fins of the driver to cool the driver, but if the load is smaller at the moment, the heat generated by the driver is less, the temperature of the driver is lower than the temperature in the electric control box, condensation is generated, and risks such as short circuit or burnout are caused. If prevent through reducing the fin of driver that the heat is taken away when too much, the driver can be because the high temperature is too high and the warning is shut down under the high temperature heavy load condition, prior art reduces the heat that the drive produced through the mode that reduces compressor operating frequency, but can influence the operating capacity of air conditioner like this, so this scheme provides an air condensing units driver heat abstractor, under the prerequisite that does not reduce the operating capacity of air conditioner, realizes the high-efficient heat dissipation of air condensing units driver and avoids driver warning when high temperature heavy load and shut down, the structure of device is as shown in figure 1.
Fig. 1 is a schematic structural diagram of a heat dissipation device of an outdoor unit driver of an air conditioner in the present embodiment, where the heat dissipation device specifically includes an electronic control box, a heat sink, a driver heat dissipation plate temperature sensor, an electrical box internal humidity sensor, and a controller. The driver is arranged in the electric control box, the radiator is arranged in the electric control box and used for radiating the driver, the radiator comprises a radiating plate, a plurality of radiating fins and a driving mechanism, the radiating fins are movably connected to the radiating plate, the radiating fins can rotate along the surface of the radiating plate of the driver, and therefore the area of the radiating fins exposed in a wind field and the distance between the radiating fins are controlled. The driving mechanism drives and is connected with the radiating fins and is used for driving the radiating fins to rotate. The rotation target angle of the radiating fin can be finally determined by arranging the temperature sensor and the humidity sensor. As shown in fig. 6, which is a schematic view illustrating an effect of a target angle of rotation of a heat dissipating fin provided in this embodiment, it can be known that the larger an angle of opening the heat dissipating fin is, the larger an area exposed in a wind field is, the larger a distance between the heat dissipating fins is, the better a heat dissipating effect is, and the greater a risk of condensation is; on the contrary, the smaller the opening angle of the radiating fins is, the smaller the area exposed in the wind field is, the smaller the distance between the radiating fins is, the poorer the radiating effect is, and the smaller the risk of condensation is. Fig. 2 is a schematic structural diagram of the heat dissipation plate of the driver, and fig. 5 is a schematic structural diagram of the heat dissipation fin.
To control the target angle of rotation of the cooling fin, in some embodiments, the drive mechanism includes:
a stepping motor;
one end of the crank shaft is connected with the stepping motor to drive the crank shaft to rotate,
the end part of the connecting rod is connected to the other end of the crankshaft, is connected with the radiating fins and is used for driving the radiating fins to rotate;
a driving plate for controlling rotation of the stepping motor;
in this embodiment, fig. 3 is a schematic structural diagram of a crankshaft, and fig. 4 is a schematic structural diagram of the connecting rod. One end of the crankshaft is connected with a stepping motor for driving the crankshaft to rotate; the end part of the connecting rod is connected with the other end of the crankshaft and is connected with the radiating fin for driving the radiating fin to rotate; the drive plate is used to control the rotation of the stepper motor. That is to say, step motor can drive after starting the bent axle is rotatory, and then the bent axle pulls the connecting rod and removes, and the removal of connecting rod can drive radiating fin and rotate along driver radiating plate surface to the area that radiating fin exposes in the wind field and the distance between the radiating fin are controlled.
In order to achieve precise control of the target angle of rotation of the heat dissipation fin, in some embodiments, the method further includes:
the driver radiating plate temperature sensor is used for detecting the temperature of the driver radiating plate;
the temperature sensor in the electrical box is used for detecting the temperature in the electrical box;
the humidity sensor in the electrical appliance box is used for detecting the humidity in the electrical appliance box;
a controller configured to:
acquiring the air dew point temperature in the electrical box based on the temperature in the electrical box and the humidity in the electrical box;
and determining the rotation target angle of the radiating fin based on the temperature of the driver radiating plate and the air dew point temperature.
In this embodiment, a driver heat dissipation plate temperature sensor is provided for detecting the temperature of the driver heat dissipation plate; the temperature sensor in the electrical box is used for detecting the temperature in the electrical box; the humidity sensor in the electrical appliance box is used for detecting the humidity in the electrical appliance box; gather temperature and humidity information through a plurality of sensors, and then the controller basis temperature in the electrical apparatus box reaches air dew point temperature in the electrical apparatus box is acquireed to humidity in the electrical apparatus box, and concrete acquisition mode is for looking for the mode of looking up the table, through gathering temperature in the electrical apparatus box reaches humidity in the electrical apparatus box looks for corresponding air dew point temperature in predetermineeing the data table, based on the temperature of driver heating panel reaches air dew point temperature confirms radiating fin's rotation target angle, the controller sends signal to actuating mechanism promptly, controls radiating fin rotation target angle.
To achieve precise control of the opening angle of the heat sink fins, in some embodiments, the controller is configured to:
when the temperature of the driver heat dissipation plate is less than or equal to the air dew point temperature, closing the heat dissipation fins;
when the temperature of the driver heat dissipation plate is greater than the air dew point temperature, the rotation target angle of the heat dissipation fins is adjusted based on the temperature of the driver heat dissipation plate.
In this embodiment, after the air dew point temperature is obtained, the temperature of the driver heat dissipation plate is compared with the air dew point temperature, when the temperature of the driver heat dissipation plate is less than or equal to the air dew point temperature, it is indicated that the driver has a condensation risk, the heat dissipation fins are closed, that is, the opening angle of the heat dissipation fins is 0 °, so that heat dissipation is reduced, and when the temperature of the driver heat dissipation plate is greater than the air dew point temperature, the rotation target angle of the heat dissipation fins needs to be further adjusted according to the temperature of the driver heat dissipation plate.
To adjust a target angle of rotation of the heat dissipating fins according to a temperature of the driver heat dissipating plate, in some embodiments, the controller is configured to:
when the temperature of the driver heat dissipation plate is greater than or equal to a first preset temperature, opening the heat dissipation fins;
and when the temperature of the driver heat dissipation plate is lower than a first preset temperature, determining the rotation target angle of the heat dissipation fin based on the temperature of the driver heat dissipation plate and the temperature in the electric box.
In this embodiment, a first preset temperature is a maximum temperature that an electric device in an electric appliance box can bear, when the temperature of a driver heat dissipation plate is greater than or equal to 60 degrees, it is described that the temperature in the electric appliance box is too high, if the temperature continuously rises, the service life of the electric device in the electric appliance box is influenced, so that the heat dissipation fins need to be completely opened to 90 degrees, and the heat is guaranteed to be dissipated as quickly as possible, if the temperature of the driver heat dissipation plate is less than 60 degrees, the rotation target angle of the heat dissipation fins needs to be determined based on the temperature of the driver heat dissipation plate and the temperature in the electric appliance box.
In order to accurately obtain the target rotation angle, in a preferred embodiment of the present application, the target rotation angle of the heat dissipation fin determined based on the temperature of the heat dissipation plate of the driver and the temperature in the electrical box is specifically determined according to the following formula:
A＝P*ΔT(n)+D(ΔT(n)－ΔT(n-1))；
wherein, a is a rotation target angle of the heat dissipation fin, Δ T (n) is a difference between the temperature of the driver heat dissipation plate at the current moment and the temperature in the electrical box, Δ T (n-1) is a difference between the temperature of the driver heat dissipation plate at the previous moment and the temperature in the electrical box, P is a preset proportionality constant, and D is a preset differential constant.
Delta T (n) is the difference value between the temperature of the heat dissipation plate and the temperature of the air in the electric appliance box, the larger delta T (n) is, the higher the temperature of the heat dissipation plate of the driver is, the larger the opening angle of the heat dissipation fins is, the heat dissipation is carried out as soon as possible, otherwise, the smaller the opening angle of the heat dissipation fins is, the lower the temperature of the heat dissipation plate of the driver is, and the smaller the opening angle of the heat dissipation fins is, so that the heat dissipation is reduced.
The delta T (n) and the delta T (n-1) are used for reflecting the change trend of the delta T (n), the larger the positive value of the delta T (n) and the delta T (n-1) is, the higher the temperature rise speed of the heat dissipation plate of the driver is, the larger the opening angle of the heat dissipation fins is, the heat dissipation is carried out as soon as possible, otherwise, the smaller the negative value is, the temperature fall of the heat dissipation plate of the driver is too fast, the smaller the opening angle of the heat dissipation fins is, and the heat dissipation is reduced.
To achieve a heat dissipation effect, in some embodiments, the controller is configured to:
when the rotating target angle is smaller than or equal to a first preset angle, closing the radiating fins;
when the rotating target angle is larger than a first preset angle and smaller than a second preset angle, adjusting the radiating fins to the rotating target angle;
and when the rotating target angle is larger than or equal to the second preset angle, the radiating fins are opened.
In this embodiment, a rotation target angle is obtained through final calculation, in the present scheme, a first preset angle is 0 °, that is, an angle when the heat dissipation fins are completely closed, and a second preset angle is 90 °, that is, a maximum opening angle of the heat dissipation fins, specifically, as shown in fig. 6, when the rotation target angle is less than or equal to 0 °, the heat dissipation fins are controlled to be opened by 0 °, that is, the heat dissipation fins are completely closed; when the rotating target angle is larger than 0 ℃ and smaller than 90 degrees, the angle of the radiating fin is adjusted to the rotating target angle obtained through calculation, and when the target angle is larger than or equal to 90 degrees, the radiating fin is completely opened to open the radiating fin by 90 degrees.
The invention discloses a heat dissipation device for a driver of an air conditioner outdoor unit, which comprises an electric control box, a heat radiator, a driving mechanism, a driver heat dissipation plate temperature sensor, an electric appliance box inner humidity sensor and a controller, wherein the controller is configured to: acquiring the air dew point temperature in the electrical box based on the temperature in the electrical box and the humidity in the electrical box; and determining the rotation target angle of the radiating fin based on the temperature of the radiating plate of the driver and the air dew point temperature, so that the high-efficiency heat dissipation of the driver of the outdoor unit of the air conditioner is realized, the alarm shutdown of the driver during high temperature and heavy load is avoided, and the comfort level of a user is improved.
In order to further illustrate the technical idea of the present invention, the present invention further provides a heat dissipation control method for a driver of an outdoor unit of an air conditioner, the method is applied to a heat dissipation device of a driver of an outdoor unit of an air conditioner, the heat dissipation device comprises a heat dissipation fin, a temperature sensor of a heat dissipation plate of the driver, a temperature sensor of an electrical box, a humidity sensor of the electrical box, and a controller, and as shown in fig. 7, the method comprises the following specific steps:
s101, based on the temperature in the electrical apparatus box reaches humidity in the electrical apparatus box acquires the air dew point temperature in the electrical apparatus box, temperature in the electrical apparatus box is acquireed through temperature sensor in the electrical apparatus box, humidity in the electrical apparatus box is through humidity sensor acquires in the electrical apparatus box.
In the step, the scheme is provided with a driver radiating plate temperature sensor for detecting the temperature of a driver radiating plate; the temperature sensor in the electrical box is used for detecting the temperature in the electrical box; the humidity sensor in the electrical appliance box is used for detecting the humidity in the electrical appliance box; gather temperature and humidity information through a plurality of sensors, and then the controller basis temperature in the electrical apparatus box reaches air dew point temperature in the electrical apparatus box is acquireed to humidity in the electrical apparatus box, and specific acquisition mode is for looking for the mode of looking for, through gathering temperature in the electrical apparatus box reaches humidity in the electrical apparatus box looks for corresponding air dew point temperature in predetermineeing the data table.
S102, determining a rotation target angle of the radiating fin based on the temperature of the driver radiating plate and the air dew point temperature, wherein the temperature of the driver radiating plate is acquired by the driver radiating plate temperature sensor.
In this step, the temperature of the driver heat dissipation plate is obtained through the driver heat dissipation plate temperature sensor, and the rotation target angle of the heat dissipation fins is determined according to the temperature of the driver heat dissipation plate and the air dew point temperature.
In order to realize the accurate control of the opening angle of the radiating fin, the rotating target angle of the radiating fin is determined based on the temperature of the driver radiating plate and the air dew point temperature, and the method specifically comprises the following steps:
when the temperature of the driver heat dissipation plate is less than or equal to the air dew point temperature, closing the heat dissipation fins;
when the temperature of the driver heat dissipation plate is greater than the air dew point temperature, a rotation target angle of the heat dissipation fin is determined based on the temperature of the driver heat dissipation plate.
In this embodiment, after the air dew point temperature is obtained, the temperature of the driver heat dissipation plate is compared with the air dew point temperature, when the temperature of the driver heat dissipation plate is less than or equal to the air dew point temperature, it is indicated that the driver has a condensation risk, the heat dissipation fins are closed, that is, the opening angle of the heat dissipation fins is 0 °, so that heat dissipation is reduced, and when the temperature of the driver heat dissipation plate is greater than the air dew point temperature, the rotation target angle of the heat dissipation fins needs to be further adjusted according to the temperature of the driver heat dissipation plate.
In order to adjust the target rotation angle of the heat dissipation fins according to the temperature of the driver heat dissipation plate, when the temperature of the driver heat dissipation plate is greater than the air dew point temperature, the target rotation angle of the heat dissipation fins is determined based on the temperature of the driver heat dissipation plate, specifically:
when the temperature of the driver heat dissipation plate is greater than or equal to a first preset temperature, opening the heat dissipation fins;
and when the temperature of the driver heat dissipation plate is lower than a first preset temperature, determining the rotation target angle of the heat dissipation fin based on the temperature of the driver heat dissipation plate and the temperature in the electric box.
In this embodiment, a first preset temperature is a maximum temperature that an electric device in an electric appliance box can bear, and in this scheme, the first preset temperature is 60 °, when the temperature of the driver heat dissipation plate is greater than or equal to 60 °, it is described that the temperature in the electric appliance box is too high, if the temperature continuously rises, the service life of the electric device in the electric appliance box is affected, so that the heat dissipation fins need to be completely opened to 90 °, and the heat is guaranteed to be dissipated as quickly as possible, and if the temperature of the driver heat dissipation plate is less than 60 °, the rotation target angle of the heat dissipation fins needs to be determined based on the temperature of the driver heat dissipation plate and the temperature in the electric appliance box.
In order to better achieve the heat dissipation effect, when the temperature of the driver heat dissipation plate is less than a first preset temperature, the rotation target angle of the heat dissipation fin is determined based on the temperature of the driver heat dissipation plate and the temperature in the electric appliance box, and the method specifically comprises the following steps:
when the rotating target angle is smaller than or equal to a first preset angle, closing the radiating fins;
when the rotating target angle is larger than a first preset angle and smaller than a second preset angle, adjusting the radiating fins to the rotating target angle;
and when the rotating target angle is larger than or equal to the second preset angle, the radiating fins are opened.
In this embodiment, a rotation target angle is obtained through final calculation, and when the rotation target angle is less than or equal to 0 °, the heat dissipation fins are controlled to be opened by 0 °, that is, the heat dissipation fins are completely closed; when the rotating target angle is larger than 0 ℃ and smaller than 90 degrees, the angle of the radiating fin is adjusted to the rotating target angle obtained through calculation, and when the target angle is larger than or equal to 90 degrees, the radiating fin is completely opened to open the radiating fin by 90 degrees.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A heat dissipating device for a driver of an outdoor unit of an air conditioner, comprising:
the electric control box is internally provided with a driver;
the radiator is arranged in the electric control box and used for radiating the heat of the driver;
the heat sink includes:
a heat dissipation plate;
the plurality of radiating fins are movably connected to the radiating plate;
and the driving mechanism is in driving connection with the radiating fins and is used for driving the radiating fins to rotate.
2. The heat dissipating apparatus of an outdoor unit driver of an air conditioner of claim 1, wherein the driving means comprises:
a stepping motor;
one end of the crank shaft is connected with the stepping motor to drive the crank shaft to rotate,
the end part of the connecting rod is connected to the other end of the crankshaft, is connected with the radiating fins and is used for driving the radiating fins to rotate;
a driving plate for controlling rotation of the stepping motor;
3. the heat dissipating apparatus of an outdoor unit driver of an air conditioner of claim 1, further comprising:
the driver radiating plate temperature sensor is used for detecting the temperature of the driver radiating plate;
the temperature sensor in the electrical box is used for detecting the temperature in the electrical box;
the humidity sensor in the electrical appliance box is used for detecting the humidity in the electrical appliance box;
a controller configured to:
acquiring the air dew point temperature in the electrical box based on the temperature in the electrical box and the humidity in the electrical box;
and determining the rotation target angle of the radiating fin based on the temperature of the driver radiating plate and the air dew point temperature.
4. The outdoor unit driver radiator of claim 3, wherein said controller is configured to:
when the temperature of the driver heat dissipation plate is less than or equal to the air dew point temperature, closing the heat dissipation fins;
when the temperature of the driver heat dissipation plate is greater than the air dew point temperature, a rotation target angle of the heat dissipation fin is determined based on the temperature of the driver heat dissipation plate.
5. The outdoor unit driver radiator of claim 4, wherein said controller is configured to:
when the temperature of the driver heat dissipation plate is greater than or equal to a first preset temperature, opening the heat dissipation fins;
and when the temperature of the driver heat dissipation plate is lower than a first preset temperature, determining the rotation target angle of the heat dissipation fin based on the temperature of the driver heat dissipation plate and the temperature in the electric box.
6. The heat dissipating device of an outdoor unit driver of an air conditioner of claim 5, wherein the determination of the target rotation angle of the heat dissipating fin based on the temperature of the heat dissipating plate of the driver and the temperature of the inside of the electric box is determined according to the following formula:
A＝P*ΔT(n)+D(ΔT(n)－ΔT(n-1))；
wherein, a is a rotation target angle of the heat dissipation fin, Δ T (n) is a difference between the temperature of the driver heat dissipation plate at the current moment and the temperature in the electrical box, Δ T (n-1) is a difference between the temperature of the driver heat dissipation plate at the previous moment and the temperature in the electrical box, P is a preset proportionality constant, and D is a preset differential constant.
7. The outdoor unit driver radiator of claim 5, wherein said controller is configured to:
when the rotating target angle is smaller than or equal to a first preset angle, closing the radiating fins;
when the rotating target angle is larger than a first preset angle and smaller than a second preset angle, adjusting the radiating fins to the rotating target angle;
and when the rotating target angle is larger than or equal to the second preset angle, the radiating fins are opened.
8. A heat dissipation control method for a driver of an air conditioner outdoor unit is applied to heat dissipation devices of the driver of the air conditioner outdoor unit, which comprise heat dissipation fins, a temperature sensor of a heat dissipation plate of the driver, a temperature sensor in an electric box, a humidity sensor in the electric box and a controller, and comprises the following steps:
acquiring the air dew point temperature in the electrical box based on the temperature in the electrical box and the humidity in the electrical box, wherein the temperature in the electrical box is acquired through a temperature sensor in the electrical box, and the humidity in the electrical box is acquired through a humidity sensor in the electrical box;
and determining the rotation target angle of the radiating fin based on the temperature of the driver radiating plate and the air dew point temperature, wherein the temperature of the driver radiating plate is acquired through the driver radiating plate temperature sensor.
9. The control method according to claim 8, wherein the target angle of rotation of the heat dissipation fin is determined based on the temperature of the driver heat dissipation plate and the air dew point temperature, specifically:
when the temperature of the driver heat dissipation plate is less than or equal to the air dew point temperature, closing the heat dissipation fins;
when the temperature of the driver heat dissipation plate is greater than the air dew point temperature, a rotation target angle of the heat dissipation fin is determined based on the temperature of the driver heat dissipation plate.
10. The control method according to claim 9, wherein when the temperature of the driver heat dissipation plate is greater than the air dew point temperature, the target angle of rotation of the heat dissipation fins is adjusted based on the temperature of the driver heat dissipation plate, specifically:
when the temperature of the driver heat dissipation plate is greater than or equal to a first preset temperature, opening the heat dissipation fins;
and when the temperature of the driver heat dissipation plate is lower than a first preset temperature, determining the rotation target angle of the heat dissipation fin based on the temperature of the driver heat dissipation plate and the temperature in the electric box.
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