CN113719918B - Air conditioner outdoor unit chassis, deicing method thereof and air conditioner - Google Patents
Air conditioner outdoor unit chassis, deicing method thereof and air conditioner Download PDFInfo
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- CN113719918B CN113719918B CN202110896861.2A CN202110896861A CN113719918B CN 113719918 B CN113719918 B CN 113719918B CN 202110896861 A CN202110896861 A CN 202110896861A CN 113719918 B CN113719918 B CN 113719918B
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- outdoor unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/60—Arrangement or mounting of the outdoor unit
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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
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/873—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling refrigerant heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/32—Supports for air-conditioning, air-humidification or ventilation units
Abstract
The application provides an air conditioner outdoor unit chassis, a deicing method thereof and an air conditioner, wherein the method comprises the following steps: acquiring the temperature corresponding to each temperature measuring area of the chassis of the air conditioner outdoor unit and the temperature of an external environment; calculating the temperature difference between the temperature corresponding to each temperature measuring area and the external environment temperature; determining a region to be deiced according to the temperature difference between the temperature corresponding to each temperature measuring region and the external environment temperature, wherein the region to be deiced comprises at least one temperature measuring region; and controlling a heating device corresponding to the area to be deiced to start so as to deice the chassis of the air conditioner outdoor unit. In this application, the base plate of the air conditioner outdoor unit is provided with a plurality of heating devices in one-to-one correspondence with a plurality of temperature measurement areas, the heating devices corresponding to the temperature measurement areas are started to remove ice, the integrity of the base plate for removing ice is ensured, the phenomenon that ice layers are accumulated in the areas outside the radiation range of a thermal field is avoided, meanwhile, the heating devices in the ice layer areas are flexibly started, all the heating devices on the base plate are not required to be fully opened, and the power consumed by the base plate of the air conditioner outdoor unit for removing ice is reduced.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to an air conditioner outdoor unit chassis and a deicing method and a deicing control system thereof.
Background
At present, the phenomenon of icing/snow accumulation of a chassis exists in an outdoor unit of an air conditioner in winter, and fan blades can be blocked to cause system faults when the phenomenon is serious. The phenomenon of icing/snow accumulation of the chassis is mainly caused by the following reasons:
1. after the ice and snow are melted, the ice and snow are condensed into an ice layer on the chassis part again, and the ice layer is gradually accumulated after standing for a long time.
2. When the outdoor unit operates, condensed water melted by the frost layer of the heat exchanger is re-solidified at a place of the chassis far away from the heat source to form a regional ice layer.
Aiming at the phenomenon of chassis icing/snow accumulation, if manual physical deicing is adopted, the air-conditioning structural part is easily damaged in the deicing process; if the electric heating belt installed on the chassis heats the chassis to forcibly deice the chassis, the ice layer far away from the heat source cannot be melted in a short time due to the problem of uneven temperature field, and even the ice layer is accumulated in the area outside the radiation range of the heat field, so that great potential safety hazard exists. Therefore, how to solve the problem of the accumulation of dead areas in the ice layer after the chassis is deiced becomes the direction of efforts of the technicians in the field.
Disclosure of Invention
The application provides an air conditioner outdoor unit chassis, a deicing method thereof and an air conditioner, and aims to solve the technical problem that an ice layer accumulation dead zone exists after the chassis is deiced.
In a first aspect, the present application provides a method for removing ice from a chassis of an outdoor unit of an air conditioner, the method including:
dividing a chassis of an air conditioner outdoor unit into a plurality of temperature measurement areas, and arranging a plurality of heating devices corresponding to each temperature measurement area on the chassis of the air conditioner outdoor unit;
acquiring the temperature corresponding to each temperature measuring area of the air conditioner outdoor unit chassis and the temperature of an external environment;
calculating the temperature difference between the temperature corresponding to each temperature measuring area and the external environment temperature;
determining a region to be deiced according to the temperature difference between the temperature corresponding to each temperature measuring region and the external environment temperature, wherein the region to be deiced comprises at least one temperature measuring region;
and controlling a heating device corresponding to the area to be deiced to start so as to deice the chassis of the air conditioner outdoor unit.
In some embodiments, the plurality of temperature measurement areas are arranged in a matrix, and the step of determining the area to be deiced according to the temperature difference between the temperature corresponding to each temperature measurement area and the external environment temperature includes:
inserting a plurality of temperature differences into a preset matrix to form a temperature difference matrix, wherein each temperature difference arrangement position in the temperature difference matrix corresponds to each temperature measurement area arrangement position on an air conditioner outdoor unit chassis one by one;
and determining an area to be deiced according to the temperature difference matrix.
In some embodiments, the step of determining the area to be deiced from the temperature difference matrix comprises:
calculating a temperature difference mean value of any adjacent temperature differences in the temperature difference matrix, wherein temperature measuring areas corresponding to any adjacent temperature differences are adjacent;
and taking the temperature difference mean value larger than or equal to a preset threshold value as a target temperature difference mean value, and determining the adjacent temperature measurement area corresponding to the target temperature difference mean value as an area to be deiced.
In some embodiments, the step of calculating the mean temperature difference value for any adjacent plurality of temperature differences in the temperature difference matrix comprises:
calculating a temperature difference average value of two adjacent temperature differences in the temperature difference matrix, which are positioned in the same row; or
And calculating the mean value of the temperature difference of two adjacent temperature differences in the same column in the temperature difference matrix.
In some embodiments, the step of determining the area to be deiced according to the temperature difference between the temperature corresponding to each temperature measuring area and the external environment temperature comprises:
and screening the temperature measurement area corresponding to the temperature difference larger than a preset threshold value as the area to be deiced.
In some embodiments, the deicing system further comprises a normally open heating device corresponding to a preset drainage area of the chassis of the air conditioner outdoor unit, and the method further comprises:
and controlling the normally-open heating device to start for continuous heat supply.
In some embodiments, after controlling the activation of the heating device corresponding to the area to be deiced, the method further comprises:
after a first preset time interval, acquiring the temperature of an area to be deiced;
and when the temperature difference and the average temperature of the area to be deiced meet preset conditions, closing the heating device corresponding to the area to be deiced.
In some embodiments, after turning off the heating device corresponding to the area to be deiced, the method further comprises:
acquiring the external environment temperature after a second preset time interval;
when the external environment temperature is lower than a first preset temperature, acquiring the temperature corresponding to each temperature measuring area of the air conditioner outdoor unit chassis and the external environment temperature;
calculating the temperature difference between the temperature corresponding to each temperature measuring area and the external environment temperature;
re-determining the areas to be deiced according to the temperature difference between the temperature corresponding to each temperature measuring area and the external environment temperature;
and controlling the heating device corresponding to the area to be deiced to start so as to deice the air conditioner outdoor unit chassis again.
In some embodiments, the method further comprises:
and when the external environment temperature is lower than the second preset temperature and the outdoor unit of the air conditioner is in the running state, controlling all the heating devices to start to perform auxiliary heating.
In a second aspect, the present application provides an air conditioner outdoor unit chassis, including:
the chassis body is provided with a plurality of temperature measuring areas;
the plurality of heating devices are arranged on the chassis body and correspond to the plurality of preset temperature measuring areas one by one; and
the temperature sensors are in one-to-one correspondence with the preset temperature measuring areas to detect the temperature of each temperature measuring area.
In some embodiments, the plurality of temperature measuring areas constitute a deicing area, the chassis body further has a drainage area adjacent to the deicing area, and the drainage area is provided with a normally-open heating device and a drainage outlet.
In a third aspect, the present application provides an air conditioner comprising:
the air conditioner outdoor unit chassis is provided with a plurality of heating devices which correspond to the temperature measuring areas one by one;
one or more a processor;
a memory; and
one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor according to the method for deicing the chassis of the air conditioner outdoor unit of the first aspect.
Set up in a plurality of heating device of a plurality of temperature measurement region one-to-one in air condensing units chassis in this application, it is regional to treat the deicing through the temperature determination that acquires a plurality of temperature measurement regions, and then the heating device that the control temperature measurement region corresponds starts the deicing, the integrality of chassis deicing has not only been guaranteed, avoid the phenomenon of the regional accumulation ice sheet outside the radiation range of thermal field, the regional heating device of start-up ice sheet of flexibility simultaneously, need not all heating device of full open chassis, the power that air condensing units chassis deicing consumed has been reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a chassis of an outdoor unit of an air conditioner provided in an embodiment of the present application;
fig. 2 is a schematic flow chart illustrating a method for deicing a chassis of an outdoor unit of an air conditioner according to an embodiment of the present application;
FIG. 3 is a schematic flow chart of a method for determining an area to be deiced according to a temperature difference matrix provided in an embodiment of the present application;
FIG. 4 is a diagram illustrating an example of calculating a mean temperature difference provided in the embodiments of the present application;
FIG. 5 is another exemplary graph of a calculated mean temperature difference value provided in an embodiment of the present application;
FIG. 6 is a diagram of another example of calculating a mean temperature difference value provided in the embodiments of the present application.
The device comprises a chassis body 10, a deicing area 11, a temperature measuring area 111, a heating device 112, a water discharging area 12, a normally open heating device 121, a water discharging opening 122 and a temperature sensor 20.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the invention. In the following description, details are set forth for the purpose of explanation. It will be apparent to one of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known structures and processes are not set forth in detail in order to avoid obscuring the description of the present invention with unnecessary detail. Thus, the present invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
The embodiments of the present application provide an air conditioner outdoor unit chassis, a deicing method thereof, and an air conditioner, which are described in detail below.
Before introducing the method for deicing the chassis of the outdoor unit of the air conditioner, first, an outdoor unit chassis of the air conditioner applied to the method for deicing the chassis of the outdoor unit of the air conditioner is introduced, referring to fig. 1, fig. 1 shows a schematic view of a structure of the chassis of the outdoor unit of the air conditioner provided by the embodiment of the application, and the chassis of the outdoor unit of the air conditioner includes:
a chassis body 10, the chassis body 10 having a plurality of temperature measurement regions 111;
the plurality of heating devices 112 are arranged on the chassis body 10, and the plurality of heating devices 112 correspond to the plurality of preset temperature measuring areas 111 one by one;
and a plurality of temperature sensors 20, the plurality of temperature sensors 20 corresponding to the plurality of preset temperature measuring regions 111 one by one to detect the temperature of each temperature measuring region 111.
According to the ice removing control method and device, the plurality of temperature measuring areas 111 and the heating devices 112 corresponding to the temperature measuring areas 111 are arranged on the base plate body 10 of the base plate of the air conditioner outdoor unit, the temperature obtained by measuring the temperature of the temperature sensor 20 of each temperature measuring area 111 can be independently used for performing ice removing control on each temperature measuring area 111, and therefore the phenomenon of ice removing dead zones caused by the fact that the ice layer far away from a heat source cannot be melted by a single heating device 112 is effectively avoided.
Specifically, the base plate body 10 serves as a base plate at the bottom of the outdoor unit, and provides mounting support for internal devices (such as a fan, a condenser, etc.) of the outdoor unit, and at the same time, collects water melted by the condenser and discharges the water. The chassis body 10 has a plurality of preset temperature measuring regions 111, and the preset temperature measuring regions 111 may be arranged adjacently or at intervals, for example, as shown in fig. 1, the preset temperature measuring regions 111 are arranged adjacently and fully spread over the deicing regions 11 on the chassis body 10, so that all the deicing regions 11 can measure the temperature. In some embodiments, the plurality of preset temperature measuring regions 111 may also be arranged according to a certain rule, for example, in a rectangular shape and in a matrix shape, so as to regularize the plurality of preset temperature measuring regions 111 and ensure the reasonability of the temperature measuring regions 111. It is understood that the size of the plurality of preset temperature regions can be set according to the measurement range of the temperature sensor 20, for example, the size of a single temperature region can be set to be 10cmX cm, and meanwhile, the plurality of preset temperature measurement regions 111 can also partially overlap, for example, the single temperature measurement region 111 and other adjacent temperature measurement regions 111 have an overlapping portion with a width of 2 cm.
In order to ensure that the temperature of each preset temperature measuring area 111 can be controlled, a heating device 112 is disposed in each temperature measuring area 111, wherein the heating device 112 may be a device that heats by an electric heating method, such as a coated electric heating wire, an electric heating belt, an electric heating pipe, and the like. In some embodiments of the present application, the heating devices 112 corresponding to each temperature measurement region 111 may also be electrically interconnected to facilitate proper arrangement of the electrical circuit of each heating device 112. It is understood that the electric heating device 112 may also be a device using other heating methods, such as heating by a heat exchange medium (e.g., high-temperature water), an electromagnetic heating device, and the like.
Correspondingly, in order to facilitate temperature measurement of each preset temperature measuring region 111, each preset temperature measuring region is provided with a temperature sensor 20, and the temperature sensor 20 may be, for example, a thermocouple temperature sensor 20, a thermistor sensor, or the like. Generally, the temperature sensor 20 is disposed at the center of each temperature measuring region 111, and it is understood that the temperature sensor 20 may be disposed at other positions of each temperature measuring region 111, such as at the edge of the temperature measuring region 111.
Further, in order to facilitate the drainage of the ice and snow on the chassis body 10 after melting, in some embodiments of the present application, the chassis body 10 is further provided with a drainage area 12, wherein the drainage area 12 is adjacent to the deicing area 11, the deicing area 11 is an area formed by a plurality of temperature measurement areas 111, and the drainage area 12 is provided with at least one drainage opening 122, so that the ice and snow on the deicing area 11 flows out from the drainage opening 122 of the drainage area 12 after melting. Specifically, the shape of the drain region 12 is similar to the shape of a condenser projected on the base pan body 10 in the air conditioner outdoor unit, so that water drops after ice and snow attached to the condenser melt during heating in winter can directly enter the drainage area 12 and be drained.
In some embodiments of the present application, in order to prevent water in the drainage area 12 from condensing into ice and blocking the drainage opening 122, the drainage area 12 is provided with a normally open heating device 121, and the normally open heating device 121 is kept in an open state after the outdoor unit enters the deicing mode, so as to ensure that the drainage area 12 drains water smoothly. It can be understood that the normally open heating device 121 can be connected to the corresponding heating device 112 on the temperature measuring region 111, so as to realize the overall unification and easy control of all the heating devices 112 on the chassis body 10.
With reference to fig. 2, fig. 2 is a schematic flow chart illustrating a method for deicing a chassis of an air conditioner outdoor unit according to an embodiment of the present application, where the method for deicing a chassis of an air conditioner outdoor unit includes:
step S201, dividing a chassis of an air conditioner outdoor unit into a plurality of temperature measuring areas 111, and arranging a plurality of heating devices 112 corresponding to each temperature measuring area 111 on the chassis of the air conditioner outdoor unit;
the plurality of temperature measurement areas 111 on the chassis of the outdoor unit of the air conditioner may be arranged adjacently or at intervals, for example, as shown in fig. 1, a plurality of preset temperature measurement areas 111 are adjacently paved on the deicing areas 11 on the chassis body 10, so that all the deicing areas 11 can perform temperature measurement. In some embodiments, the plurality of preset temperature measuring regions 111 may also be arranged according to a certain rule, for example, in a rectangular shape and in a matrix shape, so as to regularize the plurality of preset temperature measuring regions 111 and ensure the reasonability of the temperature measuring regions 111.
The heating device 112 disposed in each temperature measuring region 111 may be a film-coated electric heating wire, an electric heating belt, an electric heating pipe, or the like that performs heating by electric heating. In some embodiments of the present application, the heating devices 112 corresponding to each temperature measurement region 111 may also be electrically interconnected to facilitate proper arrangement of the electrical circuit of each heating device 112. It is understood that the heating device 112 may also be a device with other heating methods, such as a heat exchange medium (e.g., high-temperature water) heating device, an electromagnetic heating device, and the like.
Step S202, acquiring the temperature corresponding to each temperature measurement area 111 of the air conditioner outdoor unit chassis and the external environment temperature;
specifically, the temperature corresponding to each temperature measurement area 111 may be measured by the temperature sensor 20 of each temperature measurement area 111, and the temperature of the external environment may be measured by the temperature sensor 20 disposed on the outdoor unit of the air conditioner and directly contacting with the outside. However, the inventors have found that if the temperature measurement region 111 is covered with ice and snow, the temperature measured by the temperature measurement region 111 is lower than the external environment temperature, and the temperature difference is generally about 3 ℃.
Step S203, calculating the temperature difference between the temperature corresponding to each temperature measurement area 111 and the external environment temperature;
after the temperature corresponding to the temperature measurement area 111 and the external environment temperature are measured, the temperature difference between the temperature corresponding to each temperature measurement area 111 and the external environment temperature may be compared and the temperature difference may be calculated, so as to determine whether each temperature measurement area 111 is covered by ice and snow.
Step S204, determining areas to be deiced according to the temperature difference between the temperature corresponding to each temperature measurement area 111 and the external environment temperature, wherein the areas to be deiced comprise at least one temperature measurement area 111;
after the temperature difference between each temperature measurement area 111 and the external environment is obtained through calculation, the area to be deiced can be determined according to the temperature difference between the temperature corresponding to each temperature measurement area 111 and the external environment temperature. As an example, the temperature measuring region 111 corresponding to a temperature difference greater than a preset threshold (e.g., 3 ℃) may be screened as a region to be deiced, so that the temperature measuring region 111 covered by ice and snow is directly used as the region to be deiced, and the purpose of deicing the ice and snow covered region is achieved.
In some embodiments, the inventors have found that, since the ice and snow cover a thick central region, a large temperature difference is caused in the central region, and a small temperature difference is caused in the edge region, when the ice and snow cover the edge region, it is misjudged that the ice and snow cover the edge region, and the ice and snow do not detach, and in this case, the ice and snow cover region in the center is melted, and then easily condenses again in the edge region, and incomplete ice detachment occurs when ice detachment is selected regionally. In view of the above, the inventor further proposes another embodiment of determining the region to be deiced according to the temperature difference between the temperature corresponding to each temperature measurement region 111 and the external environment temperature, please refer to the following contents:
in another embodiment, the plurality of temperature measurement areas 111 are arranged in a matrix, and the step of determining the temperature difference between the temperature corresponding to each temperature measurement area 111 and the external environment temperature includes:
inserting a plurality of temperature differences into a preset matrix to form a temperature difference matrix, wherein each temperature difference arrangement position in the temperature difference matrix corresponds to each temperature measurement area 111 arrangement position on a chassis of the air conditioner outdoor unit one by one;
and determining an area to be deiced according to the temperature difference matrix.
In the above embodiment of determining the to-be-deiced area, since the plurality of temperature measurement areas 111 are arranged in a matrix, the temperature difference corresponding to each temperature measurement area 111 forms a temperature difference matrix corresponding to the temperature measurement area 111 matrix, and then the plurality of temperature measurement areas 111 are converted into temperature difference fields for digital processing, which is beneficial to determining the to-be-deiced area according to the temperature difference fields displayed by the temperature difference matrices.
As an example, the central area and the edge area of each ice and snow covered area may be determined according to the gradient of the temperature difference in the temperature difference matrix, so that the shape of each ice and snow covered area and the heating device 112 that should be turned on may be determined according to the temperature difference matrix, and the purpose of precisely deicing the center and the edge of each ice and snow covered area may be achieved.
As another example, referring to fig. 3, fig. 3 shows a schematic flowchart of a method for determining an area to be deiced according to a temperature difference matrix in an embodiment of the present application, where the step of determining the area to be deiced according to the temperature difference matrix includes:
step S301, calculating a temperature difference mean value of any adjacent temperature differences in a temperature difference matrix, wherein temperature measuring areas 111 corresponding to any adjacent temperature differences are adjacent;
specifically, the temperature difference mean value is an average value of temperature differences between the adjacent temperature measurement areas 111 and the external environment, since the ice and snow cover the central area thickly, the temperature difference corresponding to the central area is large, the temperature difference corresponding to the edge area is small, and the temperature difference mean value corresponding to the ice and snow cover area can be larger than a preset threshold, the shape of each ice and snow cover area and the heating device 112 to be turned on can also be determined by calculating the temperature difference mean value, so that the purpose of accurately deicing the center and the edge of each ice and snow cover area is achieved.
As an example, as shown in fig. 4, fig. 4 shows an example graph of calculating a mean temperature difference value in the embodiment of the present application, where the mean temperature difference value may be calculated by calculating a mean temperature difference value for two adjacent temperature differences in a temperature difference matrix, so as to determine an ice and snow covered area that is in a same row and adjacent to the temperature measuring area 111.
As another example, as shown in fig. 5, fig. 5 shows another exemplary diagram for calculating a mean temperature difference value in the embodiment of the present application, where the mean temperature difference value may be calculated by calculating a mean temperature difference value for two adjacent temperature differences in a temperature difference matrix, so as to determine an ice and snow covered area that is in a same column and adjacent to the temperature measuring area 111.
As another example, as shown in fig. 6, fig. 6 shows another example graph of calculating a mean temperature difference value in the embodiment of the present application, where the mean temperature difference value may be calculated by calculating a mean temperature difference value for four adjacent temperature differences in a temperature difference matrix, and then may determine the ice and snow covered areas adjacent to the rows and columns of the four temperature measurement areas 111.
It will be appreciated that the above-mentioned mean value of the calculated temperature difference may also be calculated by other numbers of adjacent temperature differences, for example, three, five, six or eight temperature differences adjacent to each other in rows and/or columns of the temperature difference matrix.
Step S302, taking a temperature difference mean value greater than or equal to a preset threshold as a target temperature difference mean value, and determining that the adjacent temperature measurement area 111 corresponding to the target temperature difference mean value is an area to be deiced.
After the temperature difference average value is obtained through calculation, if the temperature difference average value is greater than or equal to a preset threshold value (for example, 3 ℃), the temperature difference average value may be used as a target temperature difference average value reflecting an ice and snow covered area, and an adjacent temperature measurement area 111 corresponding to the target temperature difference average value is an area to be deiced. It can be understood that the number of the statistical adjacent temperature measurement areas 111 can be sequentially increased when the mean temperature difference value is calculated, so that the judgment can be performed on the ice and snow coverage areas with different sizes.
Step S205, controlling the heating device 112 corresponding to the region to be deiced to start to deice the air conditioner outdoor unit chassis.
After the area to be deiced is determined, the heating devices 112 corresponding to the area to be deiced can be controlled to be started to deice the chassis of the air conditioner outdoor unit, so that the purposes of deicing the chassis and eliminating deicing dead zones are achieved, the integrity of deicing the chassis is ensured, the phenomenon that ice layers are accumulated in the area outside the radiation range of a thermal field is avoided, meanwhile, the heating devices 112 in the ice layer area are flexibly started, all the heating devices 112 in the chassis are not required to be fully opened, and the power consumed by deicing the chassis of the air conditioner outdoor unit is reduced.
Further, in some embodiments of the present application, the deicing system further includes a normally open heating device 121 corresponding to a drainage area 12 preset on the chassis of the outdoor unit of the air conditioner, and in order to ensure that the drainage area 12 drains smoothly, the deicing method for the chassis of the outdoor unit of the air conditioner further includes controlling the normally open heating device 121 to start to continuously supply heat, so as to avoid the situation that the chassis of the outdoor unit of the air conditioner is blocked.
Further, in order to turn off the heating device 112 after the deicing is completed, after controlling the heating device 112 corresponding to the area to be deiced to be started, the method for deicing the chassis of the air conditioner outdoor unit further includes:
after a first preset time interval, acquiring the temperature of an area to be deiced;
and when the temperature difference and the average temperature of the area to be deiced meet the preset conditions, closing the heating device 112 corresponding to the area to be deiced.
The temperature of the area to be deiced is detected every first preset time (for example, 10 minutes), and the temperature difference and the average temperature of the area to be deiced meet preset conditions, for example, the temperature difference of the area to be deiced is less than 2 ℃, and the average temperature is greater than 5 ℃, so that it can be determined that the deicing process of the chassis of the outdoor unit of the air conditioner is completed, and the heating device 112 corresponding to the area to be deiced is turned off to save a power supply.
Further, in order to determine whether to perform deicing again, after the heating device 112 corresponding to the area to be deiced is turned off, the method for deicing the chassis of the air conditioning outdoor unit further includes:
acquiring the external environment temperature after a second preset time interval;
when the external environment temperature is lower than a first preset temperature, acquiring the temperature corresponding to each temperature measurement area 111 of the air conditioner outdoor unit chassis and the external environment temperature;
calculating the temperature difference between the temperature corresponding to each temperature measurement area 111 and the external environment temperature;
re-determining the area to be deiced according to the temperature difference between the temperature corresponding to each temperature measurement area 111 and the external environment temperature;
and controlling the heating device 112 corresponding to the area to be deiced to be started to deice the ice of the chassis of the air conditioner outdoor unit again.
By detecting whether the external environment temperature is lower than the first preset temperature (for example, -15 ℃) every second preset time (for example, 6 hours or 8 hours), whether the deicing mode needs to be started for deicing again can be judged, the deicing of the chassis of the air conditioner outdoor unit can be facilitated in time, and the influence of the icing of the chassis on the operation of the air conditioner outdoor unit when the air conditioner outdoor unit is started is avoided.
Further, in order to improve the heating effect of the air conditioner, the method for deicing the chassis of the outdoor unit of the air conditioner further comprises the following steps:
when the external environment temperature is lower than the second preset temperature and the outdoor unit of the air conditioner is in the running state, all the heating devices 112 are controlled to start to perform auxiliary heating.
By detecting that the ambient temperature is lower than the second preset temperature (for example, -15 ℃), and judging that the air conditioner outdoor unit is in the running state, the heating device 112 is started to assist in heating when the air conditioner outdoor unit heats, and the heating effect of the air conditioner is improved.
It should be noted that the above description of the method for deicing the chassis of the outdoor unit of the air conditioner is only for clearly explaining the verification process of the present application, and those skilled in the art can make equivalent modifications to the above method under the guidance of the present application, for example, after the temperature difference and the average temperature of all the temperature measurement areas 111 satisfy the preset conditions, for example, the temperature difference of all the temperature measurement areas 111 is less than 2 ℃, and the average temperature is greater than 6 ℃, it can be determined that the process for deicing the chassis of the outdoor unit of the air conditioner is completed, and then all the heating devices 112 are turned off.
In order to better implement the method for deicing the chassis of the outdoor unit of the air conditioner in the embodiment of the present application, in addition to the method for deicing the chassis of the outdoor unit of the air conditioner, the embodiment of the present application further provides an air conditioner, which includes:
the deicing method comprises the steps of providing an air conditioner outdoor unit chassis, providing one or more processors, providing a memory and providing one or more application programs, wherein the one or more application programs are stored in the memory and are configured to be executed by the processors to execute the deicing method for the air conditioner outdoor unit chassis according to any one of the embodiments.
The processor is a control center of the air conditioner, various interfaces and lines are used for connecting all parts of the whole air conditioner, and various functions of the device are executed through running or executing stored programs, so that the system is integrally controlled, and the deicing process of the chassis of the outdoor unit of the air conditioner is realized. Optionally, the processor may include one or more processing cores; the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, a Programmable logic Processor (PLC Processor), etc.
The memory may be used to store software programs and modules, and the processor may execute various functional applications and data processing by operating the software programs and modules stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data created according to the use of the logistics resource optimization system, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, the memory may also include a memory controller to provide the processor access to the memory.
The air conditioner outdoor unit chassis is used as a chassis body at the bottom of the air conditioner outdoor unit, provides mounting support for internal devices (such as a fan, a condenser and the like) of the air conditioner outdoor unit, can collect water melted by the condenser and discharge the water, is provided with a plurality of heating devices 112 corresponding to a plurality of temperature measurement areas 111 one by one, and further removes ice on the air conditioner outdoor unit chassis by receiving instructions of a processor.
It should be noted that the above description of the air conditioner is only for the sake of clarity of the verification process of the present application, and those skilled in the art can make equivalent modifications to the above air conditioner under the guidance of the present application, for example, the air conditioner may further include a display device to display the chassis temperature of the outdoor unit of the air conditioner, the deicing condition, etc.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, which are not described herein again.
Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing detailed disclosure is to be considered merely illustrative and not restrictive of the broad application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, though not expressly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.
Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, certain features, structures, or characteristics may be combined as suitable in one or more embodiments of the application.
It should be noted that in the foregoing description of embodiments of the present application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.
The above has described in detail the chassis of the outdoor unit of the air conditioner, the deicing method thereof, and the air conditioner provided in the embodiments of the present application, and the principle and the embodiments of the present invention are explained in detail by applying specific examples, and the description of the above embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (7)
1. A deicing method for a chassis of an air conditioner outdoor unit is characterized by comprising the following steps:
dividing a chassis of an air conditioner outdoor unit into a plurality of temperature measurement areas, and arranging a plurality of heating devices corresponding to each temperature measurement area on the chassis of the air conditioner outdoor unit respectively, wherein the temperature measurement areas are arranged in a matrix;
acquiring the temperature corresponding to each temperature measuring area of the air conditioner outdoor unit chassis and the temperature of an external environment;
calculating the temperature difference between the temperature corresponding to each temperature measuring area and the external environment temperature;
inserting a plurality of temperature differences into a preset matrix to form a temperature difference matrix, wherein each temperature difference arrangement position in the temperature difference matrix corresponds to each temperature measurement area arrangement position on the air conditioner outdoor unit chassis one by one;
calculating a temperature difference mean value of a plurality of temperature differences which are arbitrarily adjacent in the temperature difference matrix, wherein the temperature measuring areas corresponding to the arbitrarily adjacent temperature differences are adjacent;
taking the temperature difference mean value which is greater than or equal to a preset threshold value as a target temperature difference mean value, and determining the adjacent temperature measurement area corresponding to the target temperature difference mean value as an area to be deiced;
and controlling the heating device corresponding to the area to be deiced to start so as to deice the chassis of the air conditioner outdoor unit.
2. The method of claim 1, wherein the step of calculating a mean temperature difference value for any adjacent plurality of temperature differences in the temperature difference matrix comprises:
calculating the mean value of the temperature differences of two adjacent temperature differences in the temperature difference matrix in the same row; or alternatively
And calculating the mean value of the temperature differences of two adjacent temperature differences positioned in the same column in the temperature difference matrix.
3. Method according to any one of claims 1 to 2, characterized in that, after controlling the activation of the heating means corresponding to the area to be deiced, the method further comprises:
after a first preset time interval, acquiring the temperature of the area to be deiced;
and when the temperature difference and the average temperature of the area to be deiced meet preset conditions, closing the heating device corresponding to the area to be deiced.
4. The method according to claim 3, characterized in that, after switching off the heating means corresponding to the area to be deiced, the method further comprises:
acquiring the external environment temperature after a second preset time interval;
when the external environment temperature is lower than a first preset temperature, acquiring the temperature corresponding to each temperature measuring area of the air conditioner outdoor unit chassis and the external environment temperature;
calculating the temperature difference between the temperature corresponding to each temperature measuring area and the external environment temperature;
re-determining the areas to be deiced according to the temperature difference between the temperature corresponding to each temperature measurement area and the external environment temperature;
and controlling the heating device corresponding to the area to be deiced to start so as to deice the chassis of the air conditioner outdoor unit again.
5. An outdoor unit chassis of an air conditioner according to any one of claims 1 to 4, comprising:
a chassis body having a plurality of temperature measurement regions;
the heating devices are arranged on the chassis body and correspond to the preset temperature measuring areas one by one; and
the temperature sensors are in one-to-one correspondence with the preset temperature measuring areas to detect the temperature of each temperature measuring area so as to determine the temperature difference between the temperature corresponding to each temperature measuring area and the external environment temperature;
the temperature measurement areas are arranged in a matrix, and each temperature difference arrangement position in the temperature difference matrix corresponds to each temperature measurement area arrangement position one by one.
6. The outdoor unit chassis of claim 5, wherein the plurality of temperature measuring regions constitute a deicing region, and the chassis body further has a drain region adjacent to the deicing region, the drain region being provided with a normally open heating device and a drain opening.
7. An air conditioner, characterized in that the air conditioner comprises:
the air conditioner outdoor unit chassis is provided with a plurality of heating devices which correspond to a plurality of temperature measuring areas one by one;
one or more processors;
a memory; and
one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the method of any of claims 1 to 4 for deicing the chassis of an air conditioner outdoor unit.
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| CN202110896861.2A CN113719918B (en) | 2021-08-05 | 2021-08-05 | Air conditioner outdoor unit chassis, deicing method thereof and air conditioner |
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| CN202110896861.2A CN113719918B (en) | 2021-08-05 | 2021-08-05 | Air conditioner outdoor unit chassis, deicing method thereof and air conditioner |
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| US7922120B2 (en) * | 2006-11-15 | 2011-04-12 | Honeywell International Inc. | Wing ice protection heater element network |
| CN101749906A (en) * | 2008-12-22 | 2010-06-23 | 同方人工环境有限公司 | Defrosting control method applicable to air-cooling heat pump unit |
| CN105329445A (en) * | 2015-10-10 | 2016-02-17 | 中国商用飞机有限责任公司 | Fixed wing aircraft electric heating ice prevention/control method |
| CN107781121A (en) * | 2016-08-25 | 2018-03-09 | 北京金风科创风电设备有限公司 | Blade deicing control method and device and deicing system of wind driven generator |
| CN111457480A (en) * | 2020-04-20 | 2020-07-28 | 宁波奥克斯电气股份有限公司 | Chassis deicing control method and device, air conditioner and storage medium |
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