CN113091314B - Warm air blower control method and device, warm air blower and storage medium - Google Patents

Warm air blower control method and device, warm air blower and storage medium Download PDF

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Publication number
CN113091314B
CN113091314B CN202110313718.6A CN202110313718A CN113091314B CN 113091314 B CN113091314 B CN 113091314B CN 202110313718 A CN202110313718 A CN 202110313718A CN 113091314 B CN113091314 B CN 113091314B
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temperature
air
air outlet
distance
rotating speed
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CN113091314A (en
Inventor
丁杰兵
杨万鹏
徐贝贝
孙强
杨光帅
龚博
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Priority to CN202110313718.6A priority Critical patent/CN113091314B/en
Publication of CN113091314A publication Critical patent/CN113091314A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D13/00—Electric heating systems
    • F24D13/02—Electric heating systems solely using resistance heating, e.g. underfloor heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1084—Arrangement or mounting of control or safety devices for air heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0411—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between for domestic or space-heating systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
    • F24H9/2071—Arrangement or mounting of control or safety devices for air heaters using electrical energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/08—Electric heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2250/00—Electrical heat generating means
    • F24H2250/04—Positive or negative temperature coefficients, e.g. PTC, NTC

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention relates to the technical field of warm air blowers, and provides a warm air blower control method and device, a warm air blower and a storage medium. The control method of the fan heater comprises the following steps: controlling to start all heaters and controlling the fan to run at the maximum rotating speed; acquiring indoor ambient temperature, air outlet temperature of an air outlet of a fan heater and distance between a human body and the air outlet; if the outlet air temperature is higher than the first set outlet air temperature, the difference value delta T between the indoor ambient temperature and the outlet air temperature and the first set outlet air temperature is obtainedC1The increase of (3) reduces the number of heaters turned on; after the number of the heaters is reduced, if the air outlet temperature is lower than a second set air outlet temperature, when the distance is smaller than a first preset distance, the rotating speed of the fan is reduced along with the reduction of the distance; the first set air outlet temperature is larger than or equal to the second set air outlet temperature. The control method saves energy and electricity, can prolong the service life of the heater, ensures stable air outlet temperature when the human body is close to the air outlet, and improves the user experience.

Description

Warm air blower control method and device, warm air blower and storage medium
Technical Field
The invention relates to the technical field of warm air blowers, in particular to a warm air blower control method and device, a warm air blower and a storage medium.
Background
The current electric heating control scheme of the warm air blower is generally to control the start and stop of electric heating based on a target temperature. When the indoor temperature is higher than the set target temperature, the switch-off is controlled, and when the indoor temperature is lower than the set target temperature, the switch-on is controlled to heat. This results in frequent and long-term high power operation of the heater, which not only consumes more energy, but also affects its normal heat dissipation and reduces its service life. In addition, the temperature fluctuation amplitude at the air outlet is large, and the user experience is influenced.
Disclosure of Invention
The invention provides a warm air blower control method and device, a warm air blower and a storage medium, which are used for solving the problems that the warm air blower control method in the prior art causes higher heater energy consumption, shorter service life and poor air supply experience at an air outlet.
The invention provides a control method of a warm air blower, wherein the warm air blower is internally provided with a fan and a plurality of PTC heaters, and the control method of the warm air blower comprises the following steps:
controlling to start all the heaters and controlling the fan to run at the maximum rotating speed;
acquiring indoor ambient temperature, air outlet temperature of an air outlet of the fan heater and distance between a human body and the air outlet;
if the outlet air temperature is higher than the first set outlet air temperatureThen, along with the indoor ambient temperature and the difference value delta T between the outlet air temperature and the first set outlet air temperatureC1Decreasing the number of on-times of the heater;
after the number of the heaters which are started is reduced, if the air outlet temperature is lower than a second set air outlet temperature, when the distance is smaller than a first preset distance, the rotating speed of the fan is reduced along with the reduction of the distance; wherein the first set outlet air temperature is more than or equal to the second set outlet air temperature.
According to the control method of the warm air blower provided by the invention, the difference value delta T between the indoor ambient temperature and the air outlet temperature and the first set air outlet temperatureC1The increasing of (2) reduces the number of the heaters, specifically comprising:
if the indoor environment temperature is less than the set indoor environment temperature, and delta TC1If the difference is less than the first preset difference, the number of the heaters to be turned on is reduced to n1；
If the indoor environment temperature is less than the set indoor environment temperature, and delta TC1Not less than a first preset difference, reducing the number of the heaters to n2；
Wherein the total number of the heaters is n, n2＜n1＜n，n≥3。
According to the control method of the fan heater provided by the invention, the reduction of the rotating speed of the fan along with the reduction of the distance specifically comprises the following steps:
if the distance is smaller than a second preset distance, reducing the rotating speed of the fan to a first rotating speed;
if the second preset distance is less than or equal to the distance and less than a third preset distance, reducing the rotating speed of the fan to a second rotating speed; wherein the first rotating speed is less than the second rotating speed, and the third preset distance is less than or equal to the first preset distance.
According to the control method of the fan heater provided by the invention, the reduction of the rotating speed of the fan along with the reduction of the distance comprises the following steps: with the decrease of the distance and the difference value delta T between the air outlet temperature and the second set air outlet temperatureC2The increase in the number of revolutions of the fan is reduced.
According to the control method of the fan heater provided by the invention, the difference value delta T between the air outlet temperature and the second set air outlet temperature along with the reduction of the distanceC2The increasing of (2) reducing the rotational speed of the fan specifically comprises:
when the distance is less than the second preset distance,
if Δ TC2If the difference value is less than the second preset difference value, reducing the rotating speed of the fan to a third rotating speed;
if Δ TC2If the difference value is larger than or equal to a second preset difference value, reducing the rotating speed of the fan to a fourth rotating speed;
when the second preset distance is less than or equal to the distance and less than the third preset distance,
if Δ TC2If the difference value is less than the second preset difference value, reducing the rotating speed of the fan to a fifth rotating speed;
if Δ TC2If the difference value is larger than or equal to a second preset difference value, reducing the rotating speed of the fan to a sixth rotating speed;
wherein the fourth rotating speed is greater than the third rotating speed and less than the sixth rotating speed and less than the fifth rotating speed, and the third preset distance is less than or equal to the first preset distance.
According to the control method of the fan heater provided by the invention, the method further comprises the following steps:
acquiring a relative angle between a human body and the air outlet;
according to the distance, the relative angle and the difference value delta T between the air outlet temperature and the second set air outlet temperatureC2And adjusting the air supply direction of the air outlet.
According to the control method of the warm air blower provided by the invention, the difference value delta T between the air outlet temperature and the second set air outlet temperature is obtained according to the distance, the relative angle and the air outlet temperatureC2Adjust the air supply direction of air outlet includes:
when the distance is less than the fourth preset distance,
if the third predetermined difference is less than Δ TC2If the difference value is less than the fourth preset difference value, the air outlet is adjusted according to the relative angle to supply air to the direction of the human body;
if Δ TC2No more than thatThree predetermined difference, or Δ TC2And if the difference value is larger than or equal to a fourth preset difference value, the air outlet is adjusted according to the relative angle to supply air in the direction avoiding the human body, wherein the third preset difference value is smaller than the fourth preset difference value, and the fourth preset distance is smaller than or equal to the first preset distance.
The present invention also provides a fan heater control device, comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring indoor ambient temperature, air outlet temperature of an air outlet of a warm air blower and distance between a human body and the air outlet;
the control module is used for controlling all the heaters to be started and controlling the fan to run at the maximum rotating speed; if the outlet air temperature is higher than a first set outlet air temperature, the difference value delta T between the indoor ambient temperature and the outlet air temperature and the first set outlet air temperature is obtainedC1The increase of (3) reduces the number of on-times of the heater; after the number of the heaters is reduced, if the air outlet temperature is lower than a second set air outlet temperature, when the distance is smaller than a first preset distance, the rotating speed of the fan is reduced along with the reduction of the distance; wherein the first set outlet air temperature is more than or equal to the second set outlet air temperature.
The invention also provides a warm air blower which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor executes the program to realize the steps of any one of the warm air blower control methods.
The present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of any one of the fan heater control methods described above.
According to the warm air blower control method, the warm air blower control device, the warm air blower and the storage medium, firstly, all heaters are started, the fan is enabled to run at the maximum rotating speed, the indoor environment temperature is quickly raised in a short time, then when the air outlet temperature is raised to a certain temperature interval, the heating capacity of the heating assembly is reduced by reducing the starting number of the heaters, energy and electricity are saved, the temperature rise of the air outlet can be slowed down, or the temperature of the air outlet can be reduced, and the problem that the service life of the heater is influenced due to the fact that the surface temperature of the heater is too high is avoided. After reducing the quantity of opening of heater, at the preset distance within range of air outlet, along with the reduction of human body and air outlet distance reduce the fan rotational speed, can avoid leading to the problem that the air outlet temperature is low excessively because of the reduction of the quantity of opening of heater, improved the air supply of air outlet department and experienced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a fan heater control method provided by the invention;
fig. 2 is a block diagram of a heater controller according to the present invention;
fig. 3 is a block diagram of a fan heater provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
The invention provides a control method of a warm air blower, which is applied to the warm air blower, wherein the warm air blower is internally provided with a fan and a plurality of PTC (Positive Temperature coefficient) heaters, and the fan is used for sending air heated by the PTC heaters out from an air outlet of the warm air blower. The heaters can work independently, and when the number of the heaters which are turned on is larger, the heating amount per unit time is larger. Fig. 1 is a schematic flow chart of a fan heater control method provided by the present invention, and the fan heater control method includes:
and S100, controlling to start all the heaters and controlling the fan to operate at the maximum rotating speed. For example, when the fan heater is turned on or the indoor ambient temperature is lower than a certain set temperature, all the heaters are turned on and the fan is operated at the maximum power.
S200, acquiring indoor environment temperature, air outlet temperature of an air outlet of the warm air blower and distance between a human body and the air outlet. The indoor ambient temperature sensor arranged at the air inlet of the warm air blower can detect the indoor ambient temperature, and the air outlet temperature sensor arranged at the air outlet of the warm air blower can detect the air outlet temperature. The distance between the human body and the air outlet can be detected by a distance sensor arranged at the air outlet of the fan heater.
S300, if the air outlet temperature is higher than a first set air outlet temperature, following the indoor ambient temperature and the difference value delta T between the air outlet temperature and the first set air outlet temperatureC1The increase in the number of on-times of the heater is reduced. Wherein the difference value DeltaTC1The output air temperature | -the first set output air temperature |.
S400, after the number of the heaters is reduced, if the outlet air temperature is lower than a second set outlet air temperature, when the distance is smaller than a first preset distance, reducing the rotating speed of the fan along with the reduction of the distance; wherein the first set outlet air temperature is more than or equal to the second set outlet air temperature.
Specifically, in the process of starting all the heaters and operating the fans at the maximum rotating speed, the indoor environment temperature can rise at a fast speed, along with the rise of the indoor environment temperature, the temperature of the surface of the heater rises, the air outlet temperature of the air outlet rises, and when the air outlet temperature rises to be higher than the first set air outlet temperature, the difference value delta T between the air outlet temperature and the first set air outlet temperature is calculatedC1. The temperature of the room is gradually increased and the difference value delta TC1In the increasing process, the number of the heaters to be turned on is properly reduced to slow down the temperature rise of the air outlet or reduce the temperature of the air outlet.
And then, if the air outlet temperature is reduced to be lower than the second set air outlet temperature and the distance between the human body and the air outlet is smaller than the first preset distance, adjusting the rotating speed of the fan according to the distance between the human body and the air outlet. Specifically, when the distance between the human body and the air outlet is within a first preset distance range, the closer the distance between the human body and the air outlet is, the lower the rotating speed of the fan is, so that the situation that the air outlet temperature of the air outlet is too low due to the fact that the fan still runs at a higher rotating speed after the number of the heaters is reduced is avoided, and the comfort of a user close to the air outlet is affected. And when the distance between the human body and the air outlet is greater than the first preset distance, the rotating speed of the fan is kept to be the highest rotating speed.
For example, the number of the heaters is 3, the target temperature is 26 ℃, the first set outlet air temperature is 40 ℃, the second set outlet air temperature is 30 ℃, and the first preset distance is 4 m. When 3 heaters are started to operate, if the indoor environment temperature reaches 20 ℃ and the air outlet temperature reaches 45 ℃, 1 heater is closed. If the indoor environment temperature reaches 23 ℃ and the air outlet temperature reaches 48 ℃, the 2 heaters are closed. After the number of the heaters is reduced, the air outlet temperature is reduced to be below 30 ℃, and the rotating speed of the fan is reduced along with the distance between a human body and the air outlet within the range of 4m from the air outlet; if the distance between the human body and the air outlet is more than 4m, the rotating speed of the fan is kept to be the highest rotating speed.
The control method of the warm air blower provided by the invention has the advantages that the indoor environment temperature is quickly increased in a short time by starting all the heaters and enabling the fan to operate at the maximum rotating speed, and then when the air outlet temperature is increased to a certain temperature range, the heating capacity of the heating assembly is reduced by reducing the starting number of the heaters, so that the energy and the power are saved, the temperature increase of the air outlet can be slowed down, or the temperature of the air outlet is reduced, and the service life of the heater is prevented from being influenced by overhigh surface temperature. In addition, after the number of the heaters which are started is reduced, in the preset distance range of the air outlet, the rotating speed of the fan is reduced along with the reduction of the distance between the human body and the air outlet, the problem that the temperature of the air outlet is too low due to the reduction of the number of the heaters which are started can be avoided, and the air supply experience of the air outlet is improved.
In the embodiment of the present invention, the difference Δ T between the indoor ambient temperature and the outlet air temperature in step S300 and the first set outlet air temperatureC1Reducing the heaterThe opening number specifically includes:
if the indoor environment temperature is less than the set indoor environment temperature, and delta TC1If the difference is less than the first preset difference, the number of the heaters to be turned on is reduced to n1；
If the indoor environment temperature is less than the set indoor environment temperature, and delta TC1Not less than the first preset difference, reducing the number of the heaters to n2；
If the indoor environment temperature is set to be less than or equal to the indoor environment temperature and less than the target temperature, reducing the starting number of the heaters to n2(ii) a Wherein the total number of the heaters is n, n2＜n 1＜n，n≥3。
If the indoor environment temperature is not lower than the target temperature, all heaters are turned off, and the fan is turned off at the same time.
Specifically, n is 3, n1＝2，n2The target temperature is 26 ℃, the indoor loop temperature is set to 22 ℃, the first set outlet air temperature is 40 ℃, and the first preset difference may be set to 5 ℃ for example. Under the state that 3 heaters are completely started, when the indoor environment temperature is less than 22 ℃, if the air outlet temperature is less than 40 ℃, keeping the starting number of the heaters to be 3; if the outlet air temperature is 44 ℃, namely delta TC1If the temperature is less than 5 ℃, the number of the heaters which are started is reduced to 2, namely 1 heater is closed; if the outlet air temperature is 48 ℃, namely delta TC1And if the temperature is higher than 5 ℃, the number of the heaters which are turned on is reduced to 1, namely 2 heaters are turned off.
Furthermore, a plurality of set indoor environment temperatures can be set, and the opening number of the heaters is controlled in more stages according to the indoor environment temperatures, so that the more accurate control of the air outlet temperature is achieved.
In the embodiment of the present invention, the reducing the rotation speed of the fan along with the decrease of the distance in step S400 specifically includes:
if the distance is smaller than a second preset distance, reducing the rotating speed of the fan to a first rotating speed;
and if the second preset distance is less than or equal to the distance and less than a third preset distance, reducing the rotating speed of the fan to a second rotating speed, wherein the first rotating speed is less than the second rotating speed, and the third preset distance is less than or equal to the first preset distance.
And if the distance is larger than or equal to a third preset distance, keeping the rotating speed of the fan at the highest rotating speed.
Specifically, after the number of the heaters which are turned on is reduced, if the temperature of the air outlet is reduced to be lower than the second set air outlet temperature, the rotating speed of the fan is reduced along with the reduction of the distance between the human body and the air outlet. For example, the second preset distance is 2m, the third preset distance is 4m, and when the distance between the human body and the air outlet is less than 2m, the rotating speed of the fan is reduced to the lowest-gear rotating speed; when the distance between the human body and the air outlet is 2-4 m, reducing the rotating speed of the fan to a middle rotating speed; when the distance between the human body and the air outlet is more than 4m, the rotating speed of the fan is kept to be the highest rotating speed.
Wherein, can set up more and predetermine the distance, carry out more levels according to the distance of human body and air outlet to the rotational speed of fan and adjust, reach the more accurate control to the air-out temperature.
Further, in this embodiment of the present invention, the reducing the rotation speed of the fan along with the decrease of the distance in step S400 includes:
s410, with the decrease of the distance and the difference value delta T between the air outlet temperature and the second set air outlet temperatureC2Decreases the rotational speed of the fan, wherein the difference Δ TC2The second set air-out temperature |.
Specifically, after the number of the heaters to be turned on is reduced, if the temperature of the air outlet is reduced to be lower than the second set air outlet temperature, the air outlet temperature is increased. The difference value delta T is obtained along with the reduction of the distance between the human body and the air outletC2The increase in the number of revolutions of the fan is reduced. For example, when the distance between the human body and the air outlet is smaller than the preset distance range and the difference value is Δ TC2When the difference value is larger than the preset difference value range, reducing the rotating speed of the fan to the lowest gear rotating speed; when the distance between the human body and the air outlet is within the preset distance range and the difference value delta TC2When the difference value is within the preset range, reducing the rotating speed of the fan to the middle-gear rotating speed; when the distance between the human body and the air outlet is larger than the preset distance range and the difference value is delta TC2And when the difference value is smaller than the preset difference value range, keeping the rotating speed of the fan at the highest gear rotating speed.
In the embodiment of the invention, step S410, the difference delta T between the outlet air temperature and the second set outlet air temperature along with the decrease of the distanceC2The increasing of (2) reducing the rotational speed of the fan specifically comprises:
when the distance is less than the second preset distance,
if Δ TC2If the difference value is less than the second preset difference value, reducing the rotating speed of the fan to a third rotating speed;
if Δ TC2If the difference value is larger than or equal to a second preset difference value, reducing the rotating speed of the fan to a fourth rotating speed;
when the second preset distance is less than or equal to the distance and less than the third preset distance,
if Δ TC2If the difference value is less than the second preset difference value, reducing the rotating speed of the fan to a fifth rotating speed;
if Δ TC2If the difference value is larger than or equal to a second preset difference value, reducing the rotating speed of the fan to a sixth rotating speed;
the fourth rotating speed is greater than the third rotating speed and less than the sixth rotating speed and less than the fifth rotating speed, and the third preset distance is less than or equal to the first preset distance.
And when the distance is larger than or equal to a third preset distance, keeping the rotating speed of the fan at the highest rotating speed.
For example, the second set distance is 2m, the third preset distance is 4m, the second set outlet air temperature is 30 ℃, and the second preset difference is 5 ℃. When the distance between the human body and the air outlet is less than 2m, if delta TC2If the temperature is higher than 5 ℃, namely the air outlet temperature is lower than 25 ℃, reducing the rotating speed of the fan to a first gear rotating speed; if Δ TC2If the temperature is more than 5 ℃, namely the air outlet temperature is more than or equal to 25 ℃ and less than 30 ℃, the rotating speed of the fan is reduced to the second rotating speed. When the distance between the human body and the air outlet is 2-4 m, if the air outlet temperature is less than 25 ℃, reducing the rotating speed of the fan to a third rotating speed; and if the air outlet temperature is more than or equal to 25 ℃ and less than 30 ℃, reducing the rotating speed of the fan to a fourth gear of rotating speed, wherein the first gear of rotating speed is less than the second gear of rotating speed and less than the third gear of rotating speed and less than the fourth gear of rotating speed.
The warm air blower control method provided by the embodiment of the invention further comprises the following steps:
and S500, acquiring a relative angle between the human body and the air outlet. The human body induction sensor can detect the position of a human body, and the relative angle between the human body and the air outlet is determined according to the coordinate positions of the human body and the air outlet.
S600, according to the distance, the relative angle and the difference value delta T between the air outlet temperature and the second set air outlet temperatureC2And adjusting the air supply direction of the air outlet.
Specifically, after reducing the quantity of opening of heater, when the distance of human body and air outlet is less than predetermineeing the distance, in order to guarantee certain heating capacity to not reduce the rotational speed of fan by a wide margin, but under the condition that suitably reduces the fan rotational speed, adjust the air supply angle according to the distance of human body and air outlet simultaneously, improve the air supply experience that the air outlet is closely.
In step S600, the difference value delta T between the air outlet temperature and the second set air outlet temperature is obtained according to the distance, the relative angle and the air outlet temperatureC2Adjust the air supply direction of air outlet specifically includes:
when the distance is less than the fourth preset distance,
if the third predetermined difference is less than Δ TC2If the difference value is less than the fourth preset difference value, the air outlet is adjusted according to the relative angle to supply air to the direction of the human body;
if Δ TC2Not more than a third predetermined difference, or Δ TC2And if the difference value is larger than or equal to a fourth preset difference value, the air outlet is adjusted according to the relative angle to supply air in the direction avoiding the human body, wherein the third preset difference value is smaller than the fourth preset difference value, and the fourth preset distance is smaller than or equal to the first preset distance.
And when the distance is larger than or equal to a fourth preset distance, controlling the air outlet to enter an automatic air sweeping mode or adjusting the air supply direction according to an air supply control instruction of a user.
For example, the fourth preset distance is 4m, the second preset outlet air temperature is 30 ℃, the third preset difference is 5 ℃, and the fourth preset difference is 10 ℃. When the distance between the human body and the air outlet is less than 4m, if the temperature is less than 5 ℃, delta TC2The temperature is lower than 10 ℃, namely the air outlet temperature is lower than 20 ℃ and lower than 25 ℃, and the air outlet is adjusted to supply air to the direction of the human body; if Δ TC2< 5 ℃ or. DELTA.TC2More than 10 ℃, namely the air outlet temperature is less than 20 ℃ orThe air outlet temperature is more than 25 ℃ and less than 30 ℃, the air outlet is adjusted to supply air in the direction avoiding the human body, and the discomfort of the body feeling caused by the direct blowing of cold or hot air to the user is avoided. When the distance between the human body and the air outlet is larger than 4m, the fan heater is controlled to automatically supply air or supply air according to the air supply control instruction of a user no matter the angle between the human body and the air outlet.
The present invention also provides a fan heater control device, as shown in fig. 2, which is a structural block diagram of the fan heater control device provided by the present invention, and the fan heater control device includes:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring indoor ambient temperature, air outlet temperature of an air outlet of a warm air blower and distance between a human body and the air outlet;
the control module is used for controlling all the heaters to be started and controlling the fan to operate at the maximum rotating speed; if the outlet air temperature is higher than a first set outlet air temperature, the difference value delta T between the indoor ambient temperature and the outlet air temperature and the first set outlet air temperature is obtainedC1The increase of (3) reduces the number of on-times of the heater; after the number of the heaters which are started is reduced, if the air outlet temperature is lower than a second set air outlet temperature, when the distance is smaller than a first preset distance, the rotating speed of the fan is reduced along with the reduction of the distance; wherein, the first set outlet air temperature is more than or equal to the second set outlet air temperature.
Further, the control module is further configured to: indoor ambient temperature < set indoor ambient temperature, and Δ TC1Decreasing the number of heaters turned on to n when < a first predetermined difference1；
Indoor environment temperature < set indoor environment temperature, and Δ TC1When the difference is larger than or equal to a first preset difference, reducing the starting number of the heater to n2(ii) a Wherein the total number of the heaters is n, n2＜n1＜n，n≥3；
Reducing the number of the heaters to n when the indoor ambient temperature is set to be less than or equal to the indoor ambient temperature and less than the target temperature2。
Specifically, the control module is configured to: when the distance is smaller than a second preset distance, reducing the rotating speed of the fan; when the second preset distance is less than or equal to the third preset distance, the rotating speed of the fan is reduced to a second rotating speed; wherein the first rotating speed is less than the second rotating speed, and the third preset distance is less than or equal to the first preset distance.
Further, the control module is further configured to: along with the distance and the difference value delta T between the air outlet temperature and the second set air outlet temperatureC2The reduction of (c) reduces the rotational speed of the fan.
Specifically, when the distance is less than the second preset distance, if Δ TC2If the difference value is less than the second preset difference value, reducing the rotating speed of the fan to a third rotating speed; if Δ TC2If the difference value is larger than or equal to a second preset difference value, reducing the rotating speed of the fan to a fourth rotating speed;
when the second preset distance is less than or equal to the distance and less than the third preset distance, if delta TC2If the difference value is less than the second preset difference value, reducing the rotating speed of the fan to a fifth rotating speed; if Δ TC2If the difference value is larger than or equal to a second preset difference value, reducing the rotating speed of the fan to a sixth rotating speed; wherein the fourth rotating speed is greater than the third rotating speed and less than the sixth rotating speed and less than the fifth rotating speed, and the third preset distance is less than or equal to the first preset distance.
Further, the acquisition module is also used for acquiring the relative angle between the human body and the air outlet. The control module is also used for setting the difference value delta T between the air outlet temperature and the second set air outlet temperature according to the distance, the relative angle and the air outlet temperatureC2And adjusting the air supply direction of the air outlet.
Specifically, when the distance is smaller than the fourth preset distance, if the third preset difference is smaller than Δ TC2If the difference value is less than the fourth preset difference value, the air outlet is adjusted according to the relative angle to supply air to the direction of the human body; if Δ TC2Not more than a third predetermined difference or delta TC2And if the relative angle is more than or equal to a fourth preset difference value, the air outlet is adjusted to supply air in the direction avoiding the human body according to the relative angle, wherein the third preset difference value is less than the fourth preset difference value, and the fourth preset distance is less than or equal to the first preset distance.
The present invention further provides a fan heater, as shown in fig. 3, which is a block diagram of the structure of the fan heater provided by the present invention, the fan heater may include: a processor (processor)310, a communication Interface (communication Interface)320, a memory (memory)330 and a communication bus 340, wherein the processor 310, the communication Interface 320 and the memory 330 communicate with each other via the communication bus 340. The processor 310 may call logic instructions in the memory 330 to execute a fan heater control method according to any of the above embodiments, the method including:
controlling to start all the heaters and controlling the fan to run at the maximum rotating speed;
acquiring indoor ambient temperature, air outlet temperature of an air outlet of the fan heater and distance between a human body and the air outlet;
if the outlet air temperature is higher than a first set outlet air temperature, the difference value delta T between the indoor ambient temperature and the outlet air temperature and the first set outlet air temperature is obtainedC1The increase of (3) reduces the number of on-times of the heater;
after the number of the heaters which are started is reduced, if the air outlet temperature is lower than a second set air outlet temperature, when the distance is smaller than a first preset distance, the rotating speed of the fan is reduced along with the reduction of the distance; wherein the first set outlet air temperature is more than or equal to the second set outlet air temperature.
In addition, the logic instructions in the memory 330 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform a method of controlling a fan heater according to any one of the above embodiments, the method comprising:
controlling to start all the heaters and controlling the fan to run at the maximum rotating speed;
acquiring indoor ambient temperature, air outlet temperature of an air outlet of the fan heater and distance between a human body and the air outlet;
if the outlet air temperature is higher than a first set outlet air temperature, the difference value delta T between the indoor ambient temperature and the outlet air temperature and the first set outlet air temperature is obtainedC1The increase of (3) reduces the number of on-times of the heater;
after the number of the heaters is reduced, if the air outlet temperature is lower than a second set air outlet temperature, when the distance is smaller than a first preset distance, the rotating speed of the fan is reduced along with the reduction of the distance; wherein the first set outlet air temperature is more than or equal to the second set outlet air temperature.
In yet another aspect, the present invention further provides a non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor is implemented to perform a fan heater control method according to any of the above embodiments, the method comprising:
controlling to start all the heaters and controlling the fan to run at the maximum rotating speed;
acquiring indoor ambient temperature, air outlet temperature of an air outlet of the fan heater and distance between a human body and the air outlet;
if the outlet air temperature is higher than a first set outlet air temperature, the difference value delta T between the indoor ambient temperature and the outlet air temperature and the first set outlet air temperature is obtainedC1Decreasing the number of on-times of the heater;
after the number of the heaters which are started is reduced, if the air outlet temperature is lower than a second set air outlet temperature, when the distance is smaller than a first preset distance, the rotating speed of the fan is reduced along with the reduction of the distance; wherein, the first set outlet air temperature is more than or equal to the second set outlet air temperature.
The above-described embodiments of the apparatus are merely illustrative, and the 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 modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention 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; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (9)

1. A control method of a warm air blower is characterized in that a fan and a plurality of PTC heaters are arranged in the warm air blower, and the control method of the warm air blower comprises the following steps:
controlling to start all the heaters and controlling the fan to run at the maximum rotating speed;
acquiring indoor ambient temperature, air outlet temperature of an air outlet of the fan heater and distance between a human body and the air outlet;
if the outlet air temperature is higher than a first set outlet air temperature, the difference value delta T between the outlet air temperature and the first set outlet air temperature is obtained along with the indoor ambient temperatureC1The increase of (3) reduces the number of on-times of the heater;
after the number of the heaters is reduced, if the air outlet temperature is lower than a second set air outlet temperature, when the distance is smaller than a first preset distance, the rotating speed of the fan is reduced along with the reduction of the distance; wherein the first set outlet air temperature is more than or equal to the second set outlet air temperature;
the difference value delta T between the indoor environment temperature and the air outlet temperature and the first set air outlet temperatureC1The increasing of (2) reduces the number of the heaters, specifically comprising:
if the indoor environment temperature is less than the set indoor environment temperature, and delta TC1If the difference is less than the first preset difference, the number of the heaters to be turned on is reduced to n1；
If the indoor environment temperature is less than the set indoor environment temperature, and delta TC1Not less than the first preset difference, reducing the number of the heaters to n2；
If the indoor environment temperature is set to be less than or equal to the indoor environment temperature and less than the target temperature, reducing the starting number of the heaters to n 2; the total number of the heaters is n, n2 is larger than n, n 1 is larger than n, and n is larger than or equal to 3;
and if the indoor environment temperature is more than or equal to the target temperature, all the heaters are turned off, and the fan is turned off at the same time.
2. The control method of the warm air blower according to claim 1, wherein the reducing the rotation speed of the fan along with the reduction of the distance specifically comprises:
if the distance is smaller than a second preset distance, reducing the rotating speed of the fan to a first rotating speed;
if the second preset distance is less than or equal to the distance and less than a third preset distance, reducing the rotating speed of the fan to a second rotating speed; wherein the first rotating speed is less than the second rotating speed, and the third preset distance is less than or equal to the first preset distance.
3. The control method of the warm air blower according to claim 1, wherein the reducing the rotation speed of the fan with the decrease of the distance comprises: with the decrease of the distance and the difference value delta T between the air outlet temperature and the second set air outlet temperatureC2The increase in the number of revolutions of the fan is reduced.
4. The control method according to claim 3, wherein the distance is decreased, and the difference Δ T between the outlet air temperature and the second set outlet air temperature is smaller than the second set outlet air temperatureC2The increasing and reducing the rotating speed of the fan specifically comprises:
when the distance is less than the second preset distance,
if Δ TC2If the difference value is less than the second preset difference value, reducing the rotating speed of the fan to a third rotating speed;
if Δ TC2If the difference value is larger than or equal to a second preset difference value, reducing the rotating speed of the fan to a fourth rotating speed;
when the second preset distance is less than or equal to the distance and less than the third preset distance,
if Δ TC2If the difference value is less than the second preset difference value, reducing the rotating speed of the fan to a fifth rotating speed;
if Δ TC2If the difference value is larger than or equal to a second preset difference value, reducing the rotating speed of the fan to a sixth rotating speed;
wherein the fourth rotating speed is greater than the third rotating speed and less than the sixth rotating speed and less than the fifth rotating speed, and the third preset distance is less than or equal to the first preset distance.
5. The control method of the warm air blower according to claim 1, further comprising:
acquiring a relative angle between a human body and the air outlet;
according to the distance, the relative angle and the difference value delta T between the air outlet temperature and the second set air outlet temperatureC2And adjusting the air supply direction of the air outlet.
6. The control method according to claim 5, wherein the difference Δ T between the air outlet temperature and the second set air outlet temperature is determined according to the distance, the relative angle and the air outlet temperatureC2Adjust the air supply direction of air outlet includes:
when the distance is less than the fourth preset distance,
if the third predetermined difference is less than Δ TC2If the difference value is less than the fourth preset difference value, the air outlet is adjusted according to the relative angle to supply air to the direction of the human body;
if Δ TC2Not more than a third predetermined difference, or Δ TC2If the difference value is larger than or equal to a fourth preset difference value, the air outlet is adjusted according to the relative angle to supply air in a direction avoiding the human body; wherein the third preset difference is smaller than the fourth preset difference, and the fourth preset distance is smaller than or equal to the first preset distance.
7. A control device of a warm air blower is characterized by comprising:
the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring indoor ambient temperature, air outlet temperature of an air outlet of a warm air blower and distance between a human body and the air outlet;
the control module is used for controlling all the heaters to be started and controlling the fan to run at the maximum rotating speed; if the outlet air temperature is higher than a first set outlet air temperature, the difference value delta T between the outlet air temperature and the first set outlet air temperature is obtained along with the indoor ambient temperatureC1The increase of (3) reduces the number of on-times of the heater; after the number of the heaters which are started is reduced, if the air outlet temperature is lower than a second set air outlet temperature, when the distance is smaller than a first preset distance, the rotating speed of the fan is reduced along with the reduction of the distance; wherein the first set outlet air temperature is more than or equal to the second set outlet air temperature;
the air outlet is heated along with the indoor environment temperatureThe difference value delta T between the temperature and the first set outlet air temperatureC1The increasing of (2) reduces the number of the heaters, specifically comprising:
if the indoor environment temperature is less than the set indoor environment temperature, and delta TC1< a first predetermined difference, then the number of the heaters turned on is reduced to n1；
If the indoor environment temperature is less than the set indoor environment temperature, and delta TC1Not less than the first preset difference, reducing the number of the heaters to n2；
If the indoor environment temperature is set to be less than or equal to the indoor environment temperature and less than the target temperature, reducing the starting number of the heaters to n 2; the total number of the heaters is n, n2 is more than n and less than n 1, and n is more than or equal to 3;
and if the indoor environment temperature is not lower than the target temperature, all heaters are turned off, and the fan is turned off at the same time.
8. A fan heater comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of a method for controlling a fan heater according to any one of claims 1 to 6.
9. A non-transitory computer-readable storage medium, on which a computer program is stored, wherein the computer program, when executed by a processor, implements the steps of a method for controlling a fan heater according to any one of claims 1 to 6.
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