CN114383267A - Ice melting control method for air conditioner external fan and air conditioner - Google Patents
Ice melting control method for air conditioner external fan and air conditioner Download PDFInfo
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- 238000002844 melting Methods 0.000 title claims abstract description 41
- 230000008018 melting Effects 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 69
- 238000005485 electric heating Methods 0.000 claims abstract description 50
- 238000001514 detection method Methods 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 230000009194 climbing Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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
- F24F11/88—Electrical aspects, e.g. circuits
-
- 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
- F24F2110/12—Temperature of the outside air
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to an ice melting control method for an air conditioner external fan. The method comprises the following steps: the ice melting control is carried out by combining the ambient temperature of the outer fan, the wind speed of the outer fan and the auxiliary heating of the electric heating module. The scheme that this application provided compares traditional maintainer and gets on the roof and use hot water to handle or spill ice-melt agent, and this scheme is safer and high-efficient.
Description
Technical Field
The application relates to the technical field of refrigeration equipment, in particular to an ice melting control method for an air conditioner external fan and an air conditioner.
Background
The new energy passenger car is generally parked outdoors, after snowing or when the air temperature is low, the outdoor fan is often frozen by snow or ice blocks, the air conditioner outer fan cannot work normally, the heating effect of the air conditioner is directly poor, and even more, the condition that the air conditioner cannot be abnormally stopped under low-voltage protection can be caused.
In cold winter, the air conditioner does not work or has poor effect, thereby greatly reducing the comfort of customers and causing customer complaints. The traditional treatment scheme is generally a scheme of using hot water for treatment or spreading ice melting agent on the roof of a vehicle by maintenance personnel, but the method involves the maintenance personnel climbing the roof, so that the efficiency is low and a great risk exists. Or the electric heating fan and the oil-fired boiler are adopted for heating, but the scheme has high power and energy consumption and general heating effect.
Therefore, aiming at the condition that the air conditioner cannot normally heat due to the fact that the air conditioner outer fan is covered by ice and snow or ice blocks are frozen and the air conditioner outer fan cannot normally operate, the ice melting control method for the air conditioner outer fan is provided, and ice and snow of the air conditioner outer fan can be safely and efficiently melted, so that the air conditioner can normally heat.
Disclosure of Invention
In order to solve the problems in the related art, the application provides the ice melting control method for the air conditioner external fan, and the ice melting control method can safely and efficiently melt ice and snow on the air conditioner external fan so that the air conditioner can normally heat.
The application provides an ice melting control method for an air conditioner external fan in a first aspect, which comprises the following steps:
step S1, air conditioner operation heating mode, detecting outdoor environment temperature TwAnd determining the detected outdoor ambient temperature TwWhether the temperature is smaller than the outdoor temperature threshold T1 or not, if yes, executing a step S2; if not, the air conditioner heats according to a preset mode;
s2, starting an outer fan of the air conditioner according to a preset air speed B, detecting the air speed of the outer fan by a velocimeter, and if the air speed of the outer fan is detected to be more than or equal to an air speed threshold value C1; the air conditioner heats according to the preset mode; if not, the external fan stops running, and step S3 is executed; the velocimeter is arranged in the air duct of the air outlet of the outer fan;
s3, the air conditioner starts the electric heating module to heat, the electric heating module is arranged on an outer fan grid, the outer fan is started according to a preset air speed B, the velocimeter continuously detects the air speed of the outer fan, and if the air speed of the outer fan is detected to be larger than or equal to C1; the electric heating module stops heating, and the air conditioner heats according to the preset mode; if not, the electric heating module continues to heat until the wind speed detected by the detector is more than or equal to C1.
In one embodiment, the step S1 is to operate the air conditioner in the heating mode, and detect the outdoor ambient temperature TwAnd determining the detected outdoor ambient temperature TwWhether the temperature is smaller than the outdoor temperature threshold T1 or not, if yes, executing a step S2; if not, the air conditioner heats according to a preset mode, and the heating comprises the following steps:
the air conditioner of the step S1 operates the heating mode according to the preset mode, and detects the outdoor environment temperature T1 continuously for a first time period T1wAnd determining the continuously detected outdoor ambient temperature TwWhether the temperature is smaller than the outdoor temperature threshold T1 or not, if yes, executing a step S2; if not, the air conditioner heats according to the preset mode;
the first time length t1 ranges from 1s to 30 s.
In an embodiment, the external fan of the air conditioner in the step S2 is started according to a preset wind speed B, and the velocimeter detects the wind speed of the external fan, and if the wind speed of the external fan is detected to be greater than or equal to a wind speed threshold C1; the air conditioner heats according to the preset mode; if not, the external fan stops operating, and the step S3 includes:
after the second time period t2, starting the air conditioner external fan according to a preset air speed B, detecting the air speed of the external fan by using a velocimeter, and if the air speed of the external fan is detected to be more than or equal to C1; the air conditioner heats according to the preset mode; if not, the external fan stops running, and step S3 is executed;
the value range of the second time length t2 is 1 s-30 s.
The air conditioner of the step S2 is started up according to a preset air speed B, a velocimeter detects the air speed of the outer fan, and if the air speed of the outer fan is detected to be more than or equal to an air speed threshold value C1; the air conditioner heats according to the preset mode; if not, the external fan stops operating, and the step S3 includes:
s2, starting an outer fan of the air conditioner according to a preset air speed B, detecting the air speed of the outer fan by a velocimeter after a third time period t3, and if the detected air speed of the outer fan is larger than or equal to an air speed threshold value C1; the air conditioner heats according to the preset mode; if not, the external fan stops running, and step S3 is executed;
the third time period t3 ranges from 1s to 30 s.
In one embodiment, in step S3, the air conditioner starts the electric heating module to heat, the external fan starts at a preset wind speed B, and the continuously detecting the wind speed of the external fan by the tachometer includes:
the air conditioner in the step S3 starts the electric heating module to heat after the fourth time length t4, the outer fan is started according to the preset air speed B after the fifth time length t5, and the speedometer continuously detects the air speed of the outer fan;
the value range of the fourth time period t4 is 1 s-30 s, and the value range of the fifth time period t5 is 1 s-30 s.
In one embodiment, the value of the outdoor temperature threshold T1 ranges from 0 ℃ to 0.5 ℃.
In one embodiment, the wind speed threshold C1 is in a range of 3 meters per second to 3.5 meters per second.
In an embodiment, the number of the tachymeters is N, N is an integer greater than or equal to 1, and when N is greater than 1, the wind speed of the outer fan is an average wind speed of wind speeds measured by the N tachymeters at the same time.
In one embodiment, the step S1 is to operate the air conditioner in a heating mode according to a preset mode, and detect the outdoor ambient temperature TwAnd determining the detected outdoor ambient temperature TwWhether the temperature is smaller than the outdoor temperature threshold T1 or not, if yes, executing a step S2; if not, the air conditioner comprises the following steps before heating according to the preset mode:
the air conditioner is started, the air conditioner executes an operation mode after receiving a starting instruction, if the operation mode is a non-heating mode, the air conditioner is normally started according to preset parameters of the non-heating mode after the sixth time period t6 seconds, and if the operation mode is a heating mode, the method goes to step S1.
The second aspect of the application provides an air conditioner, which comprises an air conditioner external fan, a temperature detection device, an electric heating module, a velocimeter and a control device;
the temperature detection device is used for detecting the ambient temperature of the air conditioner external fan;
the electric heating module is used for heating the air conditioner external fan;
the velometer is used for detecting the wind speed of the air conditioner external fan;
the control device is respectively connected with the temperature detection device, the velometer and the electric heating module; the control device controls the electric heating module to heat and controls the air conditioner external fan to operate.
The technical scheme provided by the application can comprise the following beneficial effects:
according to the scheme, the outdoor temperature and the outdoor temperature threshold value T1 are detected to judge the environment temperature of the outer fan, when the environment temperature is larger than the outdoor temperature threshold value, it is indicated that the outer fan of the air conditioner is not frozen by snow or ice blocks, and the air conditioner can heat according to a preset mode.
When the wind speed is less than or equal to the preset wind speed C1, the outer fan is not frozen by the accumulated snow or the ice blocks (the rotation of the fan blades is blocked because the outer fan is frozen by the accumulated snow or the ice blocks, and the wind speed is slow), and the air conditioner can heat according to the preset mode.
And when the wind speed is lower than the preset wind speed C1, the accumulated snow on the outer fan is thicker, the electric heating module is required to heat and melt ice at the moment, after the electric heating module is started to heat, the wind speed of the outer fan is continuously detected until the wind speed is detected to be higher than or equal to the preset wind speed C1, the electric heating module stops heating, and the air conditioner can heat according to a preset mode.
According to the ice melting method for the air conditioner external fan, the icing and ice melting conditions are judged according to the ambient temperature of the external fan and the wind speed of the external fan, and the ice melting is controlled through the heating of the electric heating module, so that the air conditioner can be normally heated according to a preset mode.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
Fig. 1 is a schematic flow chart of an ice melting control method for an air conditioner external fan according to an embodiment of the present application;
fig. 2 is another schematic flow chart of the ice melting control method for the air conditioner external fan according to the embodiment of the application.
Detailed Description
Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. 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 specifically limited otherwise.
Example one
The new energy passenger car is generally parked outdoors, after snowing or when the air temperature is low, the outdoor fan is often frozen by snow or ice blocks, the air conditioner outer fan cannot work normally, the heating effect of the air conditioner is directly poor, and even more, the condition that the air conditioner cannot be abnormally stopped under low-voltage protection can be caused.
In cold winter, the air conditioner does not work or has poor effect, thereby greatly reducing the comfort of customers and causing customer complaints. The traditional treatment scheme is generally a scheme of using hot water for treatment or spreading ice melting agent on the roof of a vehicle by maintenance personnel, but the method involves the maintenance personnel climbing the roof, so that the efficiency is low and a great risk exists. Or the electric heating fan and the oil-fired boiler are adopted for heating, but the scheme has high power and energy consumption and general heating effect.
Therefore, aiming at the condition that the air conditioner cannot normally heat due to the fact that the air conditioner outer fan is covered by ice and snow or ice blocks are frozen and the air conditioner outer fan cannot normally operate, the ice melting control method for the air conditioner outer fan is provided, and ice and snow of the air conditioner outer fan can be safely and efficiently melted, so that the air conditioner can normally heat.
The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of an ice melting control method for an air conditioner external fan according to an embodiment of the present application.
With reference to figure 1 of the drawings,
the ice melting control method for the air conditioner external fan comprises a velocimeter arranged in an air duct of an air outlet of the external fan and an electric heating module arranged on a grid of the external fan.
The velocimeter is arranged in an air duct of the air outlet of the outer fan and used for detecting the air speed of the air outlet.
The application does not limit the specific number of the velocimeters, the number of the velocimeters can be an integer larger than or equal to 1, and from the objectivity and cost of measured data, 2 velocimeters are exemplarily adopted in the embodiment of the application. When the tachymeter is a plurality of, the anemometer detects that the wind speed of outer fan adopts average wind speed, and the average wind speed of this application refers to the average wind speed of the wind speed that a plurality of tachymeters detected at the same moment.
This application also does not make the restriction to the model of tachymeter, can adopt according to actual conditions in practical application, and the data that the tachymeter of this application embodiment surveyed can be transmitted to the air conditioner, and air conditioner controlling means calculates the wind speed that obtains the air outlet to the data that the tachymeter fed back.
The electric heating module sets up on outer fan grid for heat the ice-melt to outer fan, this application does not restrict the type of electric heating module, and the exemplary adoption of this application embodiment includes heating element's heating tape.
The ice melting control method comprises the following steps:
step S1, air conditioner operation heating mode, detecting outdoor environment temperature TwAnd determining the detected outdoor ambient temperature TwWhether the temperature is smaller than the outdoor temperature threshold T1 or not, if yes, the step S2 is executed; if not, the air conditioner heats according to a preset mode;
in this step, the air conditioner starts to perform the heating mode when it is started, and detects the outdoor ambient temperature TwNamely the outdoor environment temperature of the outer fan, and the detected outdoor environment temperature TwAnd comparing the outdoor temperature with an outdoor temperature threshold T1. The outdoor temperature threshold is a temperature threshold set in advance by the ice melting control method of the air conditioner external fan, and the temperature threshold is determined according to whether the ambient temperature is overSetting by ice and snow accumulation. By the outdoor ambient temperature TwWhether the temperature is higher than the set temperature threshold value T1 or not can be judged whether the outer fan is covered by snow or ice.
Outdoor ambient temperature TwIf the temperature is greater than or equal to the set temperature threshold T1, it is indicated that the ambient temperature where the outer fan is located is high, and the outer fan is not covered by snow or ice blocks, the air conditioner can directly heat according to a preset mode.
When the outdoor environment temperature TwWhen the temperature is smaller than the set temperature threshold value T1, the ambient temperature where the outer fan is located is low and lower than the temperature of the frozen snow, and at the moment, the outer fan is covered by the snow or ice blocks, so that the judgment and control of the next step are needed, and the air conditioner cannot directly heat according to the preset mode.
S2, starting an outer fan of the air conditioner according to a preset air speed B, detecting the air speed of the outer fan by a velocimeter, and if the detected air speed of the outer fan is larger than or equal to an air speed threshold value C1; the air conditioner heats according to a preset mode; if not, the external fan stops starting, and the step S3 is entered;
in this step, an external fan of the air conditioner is started at a preset wind speed B, and the wind speed of the external fan is detected. The preset wind speed B is not limited by the application and can be selected according to the type of the external fan, and for example, the selection range of the wind speed B can be the wind speed reached by the fan when the fan runs according to 60% to 65% of the maximum rated rotating speed.
The wind speed threshold C1 is not particularly limited in this application and may be set according to practical applications, and the wind speed threshold of 3 meters per second is exemplarily adopted in the embodiment of the present application.
In this step, the air conditioner external fan is started according to a preset air speed B, the air speed of the external fan is tested at this time, the air speed of the external fan is greater than or equal to a wind speed threshold C1, which indicates that the external fan is not covered by snow or ice, and because the external fan is covered by snow or ice, a certain resistance is generated to the rotation of the fan blades, which causes the wind speed to decrease, therefore, when the air speed of the external fan is greater than or equal to the wind speed threshold C1, the air conditioner heats according to a preset mode, and when the air speed of the external fan is less than the wind speed threshold C1, the external fan stops rotating, and needs to be judged and controlled next step, and the air conditioner cannot directly heat according to the preset mode.
Step S3, the air conditioner starts the electric heating module to heat, after a fifth time period t5, the outer fan is started according to a preset air speed B, the velocimeter continuously detects the air speed of the outer fan, and if the air speed of the outer fan is detected to be larger than or equal to C1; the electric heating module stops heating, and the air conditioner heats according to a preset mode; if not, the electric heating module continues to heat until the wind speed detected by the detector is larger than or equal to C1, and the air conditioner heats according to a preset mode.
When the wind speed of the outer fan is detected to be smaller than the wind speed threshold value C1 in the previous step, it is indicated that the outer fan is covered by accumulated snow or ice blocks, and certain resistance is generated to the rotation of the fan blades, so that the wind speed of the outer fan is slow, and external force is needed to melt ice at the moment. This application then heats the mode to the external fan through starting electrical heating module, heats along with the external fan of electrical heating module, heats time t5 back outer fan according to predetermineeing wind speed B restart during the fifth, and the tachymeter carries out the wind speed of continuous real-time detection outer fan simultaneously, and when detecting the wind speed more than or equal to wind speed threshold value C1 of outer fan, the electrical heating module stop heating, and the air conditioner heats according to the mode of predetermineeing.
The beneficial effects of the embodiment of the application are as follows: according to the scheme, the outdoor temperature and the outdoor temperature threshold value T1 are detected to judge the environment temperature of the outer fan, when the environment temperature is larger than the outdoor temperature threshold value, it is indicated that the outer fan of the air conditioner is not frozen by snow or ice blocks, and the air conditioner can heat according to a preset mode.
When the wind speed is less than or equal to the preset wind speed C1, the outer fan is not frozen by the accumulated snow or the ice blocks (the rotation of the fan blades is blocked because the outer fan is frozen by the accumulated snow or the ice blocks, and the wind speed is slow), and the air conditioner can heat according to the preset mode.
And when the wind speed is lower than the preset wind speed C1, the accumulated snow on the outer fan is thicker, the electric heating module is required to heat and melt ice at the moment, after the electric heating module is started to heat, the wind speed of the outer fan is continuously detected until the wind speed is detected to be higher than or equal to the preset wind speed C1, the electric heating module stops heating, and the air conditioner can heat according to a preset mode.
According to the ice melting method for the air conditioner external fan, the icing and ice melting conditions are judged according to the ambient temperature of the external fan and the wind speed of the external fan, and the ice melting is controlled through the heating of the electric heating module, so that the air conditioner can be normally heated according to a preset mode.
Example two
The ice melting control method of the air conditioner external fan in the embodiment of the application is further described in the embodiment aiming at the effect that the air conditioner can normally heat according to a preset mode by combining the ambient temperature of the external fan, the wind speed of the external fan and the auxiliary heating of the electric heating module to control the ice melting.
Fig. 2 is another schematic flow chart of an ice melting control method for an air conditioner external fan according to an embodiment of the present application, and refer to fig. 2.
Step S1 of the embodiment of the present application is specifically to operate the air conditioner in the heating mode according to the preset mode, and detect the outdoor ambient temperature T at the continuous first time period T1wAnd determining the continuously detected outdoor ambient temperature TwWhether the temperature is smaller than the outdoor temperature threshold T1 or not, if yes, the step S2 is executed; if not, the air conditioner heats according to a preset mode, and the value range of the first time t1 is 1 s-30 s.
The embodiment of the application adopts the mode that after the air conditioner operates in the heating mode according to the preset mode, the outdoor environment temperature T is detected continuously for the first time period T1w. The outdoor environment temperature detected in the continuous first time period t1 can represent the outdoor environment where the outer fan is located, but not the instant environment temperature of the outer fan, and because the instant environment temperature has a certain error, the accuracy of temperature data is ensured by detecting the outdoor environment temperature in the continuous first time period t 1.
In this step, the continuously detected outdoor ambient temperature T is judgedwWhether the temperature is smaller than an outdoor temperature threshold value T1 or not, if so, entering the next step; if not, the air conditioner heats according to a preset mode.
The value range of T1 is 0-0.5 ℃. The embodiment of the application exemplarily adopts 0 degree centigrade.
Step S2 of the embodiment of the application specifically includes that after a second time period t2, an external fan of the air conditioner is started according to a preset wind speed B, after a third time period t3, a velocimeter detects the wind speed of the external fan, and if the detected wind speed of the external fan is greater than or equal to a wind speed threshold C1; the air conditioner heats according to a preset mode; if not, the external fan stops starting, the next step is carried out, and the value range of the third time length t3 is 1 s-30 s.
According to the embodiment of the application, after the second time period t2, the outer fan is started according to the preset wind speed B, and after the third time period t3, the velocimeter detects the wind speed of the outer fan. The reason that the air speed of the outer fan is tested after the outer fan of the air conditioner is started for the third time period t3 according to the preset air speed B is emphasized in the embodiment of the application is that the outer fan can stably rotate after the third time period t3, and the velocimeter can detect the stable air speed at the moment. The third duration t3 ranges from 1s to 30 s.
The wind speed threshold C1 is set according to the type of the fan and the starting gear of the fan, and the specific value is not limited in the present application, and is exemplarily 3 m/s to 3.5 m/s.
Step S3 of the embodiment of the application specifically includes that the air conditioner starts the electric heating module to heat after a fourth time period t4, the outer fan starts according to a preset air speed B after a fifth time period t5, the velocimeter continuously detects the air speed of the outer fan, and if the air speed of the outer fan is detected to be greater than or equal to C1; the electric heating module stops heating, and the air conditioner heats according to the preset mode; if not, the electric heating module continues to heat until the wind speed detected by the detector is greater than or equal to C1, the air conditioner heats according to the preset mode, the value range of the fourth time period t4 is 1 s-30 s, and the value range of the fifth time period t5 is 1 s-30 s.
The embodiment of the application starts the electrical heating module heating after the air conditioner is at long t4 in the fourth time, the outer fan of long t5 back starts according to presetting wind speed B after the fifth time, the outer fan just starts according to presetting wind speed B after the long t5 of electrical heating module heating time, the purpose is after heating a period, treat that outer fan outer snow or ice-cube melt the back and just start outer fan, avoid starting the outer fan from the electrical heating module initial heating promptly, extravagant energy consumption and outer fan damage performance itself because of the overweight compulsory rotation of outside snow, the life of outer fan of direct influence.
The beneficial effects of the embodiment of the application are as follows: the air speed of the outer fan is tested after the outer fan of the air conditioner is started for the third time t3 according to the preset air speed B, the velocimeter can detect the stable air speed at the moment, the ice melting control accuracy of the outer fan of the air conditioner is improved, the outer fan is started according to the preset air speed B after the electrical heating module heats for the fifth time t5, and the service life of the outer fan is prevented from being influenced by the waste of energy consumption.
EXAMPLE III
The embodiment mentioned above refers to a method for controlling ice melting of an air conditioner external fan in a heating mode, and as is well known, an air conditioner has a cooling mode function besides the heating mode.
Step S1, the air conditioner operates the heating mode according to the preset mode and detects the outdoor environment temperature TwAnd determining the detected outdoor ambient temperature TwWhether the temperature is smaller than an outdoor temperature threshold value T1 or not, if so, entering the next step; if not, the method also comprises the steps before the air conditioner heats according to the preset mode;
and (3) starting the air conditioner, executing an operation mode after the air conditioner receives a starting instruction, executing normal starting of the air conditioner after a sixth time period t6 seconds if the operation mode is a non-heating mode, and entering the next step if the operation mode is the heating mode.
The air conditioner continuously detects the outdoor ambient temperature T for a first time period T1wDetermining the continuously detected outdoor ambient temperature TwWhether the temperature is smaller than an outdoor temperature threshold value T1 or not, if so, entering the next step; if not, the air conditioner heats according to a preset mode. The value range of the first time length t1 is 1 s-30 s; the value range of T1 is 0-0.5 ℃.
After the second time period t2, starting an outer fan of the air conditioner according to a preset air speed B, detecting the air speed of the outer fan by a velocimeter after the third time period t3, and if the detected air speed of the outer fan is larger than or equal to an air speed threshold C1; the air conditioner heats according to a preset mode; if not, the external fan stops starting, and the next step is carried out. The value range of the third time length t3 is 1 s-30 s; the value range of the wind speed threshold value C1 is 3 meters per second to 3.5 meters per second; the selected range of B may be the wind speed achieved by the fan operating at 60% to 65% of the maximum rated speed.
Starting the electric heating module to heat after a fourth time length t4, starting the outer fan according to a preset air speed B after a fifth time length t5, continuously detecting the air speed of the outer fan by using a velocimeter, and if the air speed of the outer fan is detected to be more than or equal to C1; the electric heating module stops heating, and the air conditioner heats according to the preset mode; if not, the electric heating module continues to heat until the wind speed detected by the detector is greater than or equal to C1, the air conditioner heats according to the preset mode, the value range of the fourth time period t4 is 1 s-30 s, and the value range of the fifth time period t5 is 1 s-30 s.
The beneficial effects of the embodiment of the application are as follows: according to the ice melting method for the air conditioner external fan, the ice melting control is carried out by combining the ambient temperature of the external fan, the wind speed of the external fan and the auxiliary heating of the electric heating module, so that the effect that the air conditioner can be normally heated according to a preset mode is achieved, and compared with the scheme that traditional maintenance personnel use hot water to treat the vehicle roof or scatter an ice melting agent, the scheme is safer and more efficient.
Example four
Corresponding to the embodiment of the application function implementation method, the application also provides an air conditioner and a corresponding embodiment.
The air conditioner comprises an air conditioner external fan, a temperature detection device, an electric heating module, a velocimeter and a control device;
the temperature detection device is used for detecting the ambient temperature of the external fan of the air conditioner; the temperature detection device can be arranged at the position of an air conditioner external fan in a temperature sensor mode, the temperature sensor feeds the detected temperature back to the control device of the air conditioner, and the control device controls the air conditioner according to the temperature information fed back by the temperature detection device.
The electric heating module is used for heating an air conditioner external fan; the electric heating module is arranged on the air conditioner outer fan, when snow or ice exists in the air conditioner outer fan, the air conditioner outer fan is heated through the electric heating module, and therefore the snow on the air conditioner outer fan is melted, and the operation of a heating mode is not affected.
The velocimeter is used for detecting the wind speed of an external fan of the air conditioner; the tachymeter quantity of this application does not restrict, and the tachymeter sets up in the air outlet of fan outside the air conditioner.
The control device is respectively connected with the temperature detection device, the velocimeter and the electric heating module, and the control device controls the electrification and the outage of the electric heating module according to the detected ambient temperature and the wind speed collected by the velocimeter.
The control device controls the running condition of the outer fan according to the detected ambient temperature and the wind speed collected by the velocimeter.
The beneficial effects of the embodiment of the application are as follows: the air conditioner of this application embodiment includes the outer fan of air conditioner, temperature-detecting device, the electrical heating module, tachymeter and controlling means, controlling means and temperature-detecting device, tachymeter and electrical heating module link to each other respectively and are used for according to the circular telegram and the outage condition of the wind speed control electrical heating module that detected ambient temperature and tachymeter gathered and then control the outer fan ice-melt of air conditioner, make this air conditioner can normal operating heating mode.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. An ice melting control method for an air conditioner external fan is characterized by comprising the following steps:
the method comprises the following steps:
step S1, air conditioner operation heating mode, detecting outdoor environment temperature TwAnd determining the detected outdoor ambient temperature TwWhether the temperature is smaller than the outdoor temperature threshold T1 or not, if yes, executing a step S2; if not, the air conditioner heats according to a preset mode;
s2, starting an outer fan of the air conditioner according to a preset air speed B, detecting the air speed of the outer fan by a velocimeter, and if the air speed of the outer fan is detected to be more than or equal to an air speed threshold value C1; the air conditioner heats according to the preset mode; if not, the external fan stops running, and step S3 is executed; the velocimeter is arranged in the air duct of the air outlet of the outer fan;
s3, the air conditioner starts the electric heating module to heat, the electric heating module is arranged on an outer fan grid, the outer fan is started according to a preset air speed B, the velocimeter continuously detects the air speed of the outer fan, and if the air speed of the outer fan is detected to be larger than or equal to C1; the electric heating module stops heating, and the air conditioner heats according to the preset mode; if not, the electric heating module continues to heat until the wind speed detected by the detector is more than or equal to C1.
2. The ice melting control method for the air conditioner external fan according to claim 1, characterized by comprising the following steps:
step S1, the air conditioner operates in a heating mode, and the outdoor environment temperature T is detectedwAnd determining the detected outdoor ambient temperature TwWhether the temperature is smaller than the outdoor temperature threshold T1 or not, if yes, executing a step S2; if not, the air conditioner heats according to a preset mode, and the heating comprises the following steps:
the air conditioner of the step S1 operates the heating mode according to the preset mode, and detects the outdoor environment temperature T1 continuously for a first time period T1wAnd determining the continuously detected outdoor ambient temperature TwWhether the temperature is smaller than the outdoor temperature threshold T1 or not, if yes, executing a step S2; if not, the air conditioner heats according to the preset mode;
the first time length t1 ranges from 1s to 30 s.
3. The ice melting control method for the air conditioner external fan according to claim 1, characterized by comprising the following steps:
the air conditioner of the step S2 is started up according to a preset air speed B, a velocimeter detects the air speed of the outer fan, and if the air speed of the outer fan is detected to be more than or equal to an air speed threshold value C1; the air conditioner heats according to the preset mode; if not, the external fan stops operating, and the step S3 includes:
after the second time period t2, starting the air conditioner external fan according to a preset air speed B, detecting the air speed of the external fan by using a velocimeter, and if the air speed of the external fan is detected to be more than or equal to C1; the air conditioner heats according to the preset mode; if not, the external fan stops running, and step S3 is executed;
the value range of the second time length t2 is 1 s-30 s.
4. The ice melting control method for the air conditioner external fan according to claim 1, characterized by comprising the following steps:
the air conditioner of the step S2 is started up according to a preset air speed B, a velocimeter detects the air speed of the outer fan, and if the air speed of the outer fan is detected to be more than or equal to an air speed threshold value C1; the air conditioner heats according to the preset mode; if not, the external fan stops operating, and the step S3 includes:
s2, starting an outer fan of the air conditioner according to a preset air speed B, detecting the air speed of the outer fan by a velocimeter after a third time period t3, and if the detected air speed of the outer fan is larger than or equal to an air speed threshold value C1; the air conditioner heats according to the preset mode; if not, the external fan stops running, and step S3 is executed;
the third time period t3 ranges from 1s to 30 s.
5. The ice melting control method for the air conditioner external fan according to claim 1, characterized by comprising the following steps:
step S3 the air conditioner starts the electrical heating module heating, outer fan is according to presetting wind speed B and starts, the tachymeter detects in succession outer fan' S wind speed includes:
the air conditioner in the step S3 starts the electric heating module to heat after the fourth time length t4, the outer fan is started according to the preset air speed B after the fifth time length t5, and the speedometer continuously detects the air speed of the outer fan;
the value range of the fourth time period t4 is 1 s-30 s, and the value range of the fifth time period t5 is 1 s-30 s.
6. The ice melting control method for the air conditioner external fan according to claim 1, characterized by comprising the following steps:
the value range of the outdoor temperature threshold T1 is 0-0.5 ℃.
7. The ice melting control method for the air conditioner external fan according to claim 1, characterized by comprising the following steps:
the wind speed threshold value C1 ranges from 3 meters per second to 3.5 meters per second.
8. The ice melting control method for the air conditioner external fan according to claim 1, characterized by comprising the following steps:
the number of the velocimeters is N, N is an integer larger than or equal to 1, and when N is larger than 1, the wind speed of the outer fan is the average wind speed of the wind speeds measured by the N velocimeters at the same time.
9. The ice melting control method for the air conditioner external fan according to claim 1, characterized by comprising the following steps:
and S1, operating the air conditioner in a heating mode according to a preset mode, and detecting the outdoor environment temperature TwAnd determining the detected outdoor ambient temperature TwWhether the temperature is smaller than the outdoor temperature threshold T1 or not, if yes, executing a step S2; if not, the air conditioner comprises the following steps before heating according to the preset mode:
the air conditioner is started, the air conditioner executes an operation mode after receiving a starting instruction, if the operation mode is a non-heating mode, the air conditioner is normally started according to preset parameters of the non-heating mode after the sixth time period t6 seconds, and if the operation mode is a heating mode, the method goes to step S1.
10. An air conditioner, comprising:
the air conditioner comprises an air conditioner external fan, a temperature detection device, an electric heating module, a velocimeter and a control device;
the temperature detection device is used for detecting the ambient temperature of the air conditioner external fan;
the electric heating module is used for heating the air conditioner external fan;
the velometer is used for detecting the wind speed of the air conditioner external fan;
the control device is respectively connected with the temperature detection device, the velometer and the electric heating module; the control device controls the electric heating module to heat and controls the air conditioner external fan to operate.
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