CN110594992A - Air conditioner preheating control method and device and air conditioner - Google Patents
Air conditioner preheating control method and device and air conditioner Download PDFInfo
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- CN110594992A CN110594992A CN201910815495.6A CN201910815495A CN110594992A CN 110594992 A CN110594992 A CN 110594992A CN 201910815495 A CN201910815495 A CN 201910815495A CN 110594992 A CN110594992 A CN 110594992A
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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
- 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside 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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Chemical & Material Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, and discloses an air conditioner preheating control method, an air conditioner preheating control device and an air conditioner, wherein the air conditioner preheating control method comprises the following steps: controlling the air conditioner to enter a preheating mode according to the starting instruction; controlling a compressor, an expansion valve and an outdoor fan of the air conditioner to operate, and preheating an indoor heat exchanger; monitoring the temperature of an outer coil of the outdoor heat exchanger, the temperature of an outdoor environment and the temperature of an inner coil of the indoor heat exchanger in real time; and under the condition that the temperature of the inner coil is lower than the preset temperature, when the temperature of the outer coil is higher than or equal to the outdoor environment temperature, controlling the outdoor fan to stop running. According to the air conditioner preheating control method and device and the air conditioner, the indoor heat exchanger is preheated through the operation of the compressor, the expansion valve and the outdoor fan, so that when the air conditioner is started, the indoor fan can directly blow out hot air, and user experience is improved; the outdoor fan is controlled to stop running, so that the outward heat dissipation capacity of the air conditioning system can be reduced, and the energy-saving effect is achieved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner preheating control method and device and an air conditioner.
Background
In winter, because the indoor temperature is low, when the air conditioner is just started to heat, the temperature of the coil pipe of the indoor heat exchanger is low, and the blown air is similar to the indoor temperature, the condition that the air conditioner blows cold air is caused, and the heating effect cannot be satisfied by a user. Although the design of preventing the delay of cold wind or judging the temperature of the inner disc to blow air exists in the market, the time for waiting for using the heating effect of the air conditioner in the heating mode can be greatly prolonged.
In the prior art, the chinese patent publication No. 201593848 discloses an air conditioner with a heating device, which is composed of an air conditioner and a heating body assembly, wherein the heating body assembly is installed at an air inlet side or an air outlet side of an interior part of the air conditioner. When the air conditioner heats at low temperature, the heating body works, so that the heating effect of the air conditioner is enhanced.
The heating body is added when the air conditioner heats in the prior art, so that the heating effect of the air conditioner can be enhanced, the air conditioner cannot be preheated, the heating mode cannot be started, hot air can be directly blown out, and the user experience is poor.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide an air conditioner preheating control method and device and an air conditioner, which are used for solving or partially solving the problems that the existing air conditioner can not directly blow out hot air in a heating mode and the user experience is poor.
(II) technical scheme
In order to solve the above technical problem, a first aspect of the present invention provides a preheating control method for an air conditioner, including: controlling the air conditioner to enter a preheating mode according to the starting instruction; controlling a compressor, an expansion valve and an outdoor fan of the air conditioner to operate, and preheating an indoor heat exchanger; monitoring the temperature of an outer coil of the outdoor heat exchanger, the temperature of an outdoor environment and the temperature of an inner coil of the indoor heat exchanger in real time; and under the condition that the temperature of the inner coil is less than the preset temperature, when the temperature of the outer coil is more than or equal to the outdoor environment temperature, controlling the outdoor fan to stop running.
On the basis of the above scheme, according to the starting instruction, before controlling the air conditioner to enter the preheating operation mode, the method further comprises the following steps: and judging whether the air conditioner meets the preheating starting condition or not.
On the basis of the above scheme, the preheating starting condition specifically includes: the air conditioner is allowed to start a preheating mode; the outdoor environment temperature is lower than the preset outdoor temperature, and the indoor environment temperature is lower than the preset indoor temperature; and at least one of the normal operation of each component of the internal machine and the external machine of the air conditioner.
On the basis of the above scheme, the start instruction specifically includes: starting a preheating mode immediately; or starting a preheating mode at a preset time; or starting the preheating mode at a preset time before the set starting time of the air conditioner.
On the basis of the scheme, the operation of the compressor, the expansion valve and the outdoor fan of the air conditioner is controlled, and the preheating of the indoor heat exchanger specifically comprises the following steps: and controlling and adjusting the specific operation of the preheating mode according to the temperature of the inner coil and the variation trend of the temperature.
On the basis of the scheme, the specific operation of the preheating mode is controlled and adjusted according to the temperature of the inner coil and the variation trend thereof, and the specific operation comprises the following specific steps: when the temperature of the inner coil is lower than a first preset temperature and is in an ascending trend, controlling the air conditioner to operate in a first preheating mode; when the temperature of the inner coil is greater than or equal to a first preset temperature and is in an ascending trend, controlling the air conditioner to operate in a second preheating mode; when the temperature of the inner coil is greater than or equal to a second preset temperature and is in a descending trend, controlling the air conditioner to operate in a third preheating mode; and when the temperature of the inner coil is lower than a second preset temperature and is in a descending trend, controlling the air conditioner to operate in a fourth preheating mode.
On the basis of the scheme, the first preset temperature is greater than or equal to the second preset temperature; under the condition that interior coil pipe temperature is less than preset temperature, when outer coil pipe temperature more than or equal to outdoor ambient temperature, control outdoor fan stop operation specifically includes: when the air conditioner operates in a first preheating mode or a fourth preheating mode, controlling an outdoor fan to stop operating when the temperature of the outer coil pipe is greater than or equal to the outdoor environment temperature; otherwise, controlling the outdoor fan to operate according to the preset rotating speed of the outdoor fan.
On the basis of the above scheme, the preheating control method further comprises: monitoring the fault of the air conditioner, and controlling the air conditioner to stop running in a preheating mode when the fault of the air conditioner is monitored; or when the air conditioner receives a starting instruction or an instruction of stopping running the preheating mode, stopping running the preheating mode; alternatively, when the air conditioner is operated in the preheating mode for a set time, the preheating mode is stopped.
In a second aspect of the present invention, there is provided a preheating control device for an air conditioner, comprising: the preheating starting module is used for controlling the air conditioner to enter a preheating mode according to a starting instruction; the preheating control module is used for controlling the operation of a compressor, an expansion valve and an outdoor fan of the air conditioner and preheating the indoor heat exchanger; the monitoring module is used for monitoring the temperature of an outer coil of the outdoor heat exchanger, the temperature of an outdoor environment and the temperature of an inner coil of the indoor heat exchanger in real time; and the outdoor fan control module is used for controlling the outdoor fan to stop running when the temperature of the inner coil is less than or equal to the preset temperature and the temperature of the outer coil is more than or equal to the outdoor environment temperature.
In a third aspect of the present invention, an air conditioner is provided, which comprises the preheating control device of the air conditioner; the monitoring module comprises temperature sensors respectively arranged at the positions of an indoor coil, an outdoor coil and an inner coil of the air conditioner.
(III) advantageous effects
According to the air conditioner preheating control method and device and the air conditioner, the high-temperature medium is generated to flow through the indoor heat exchanger through the operation of the compressor, the expansion valve and the outdoor fan, so that the indoor heat exchanger is preheated, the inner coil pipe of the indoor heat exchanger reaches a certain temperature before the air conditioner is started, and therefore when the air conditioner is started, the indoor fan can directly blow out hot air, the heating speed of the air conditioner can be improved, the effect of heating after the air conditioner is started is achieved, and the user experience is improved; under the condition that the temperature of the inner coil pipe is lower than the preset temperature, when the temperature of the outer coil pipe is higher than or equal to the outdoor environment temperature, the outdoor fan is controlled to stop running, the outward heat dissipation capacity of the air conditioning system can be reduced, and therefore the energy-saving effect is achieved.
Drawings
FIG. 1 is a schematic diagram of a main flow of a preheating control method for an air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic overall flow chart of a preheating control method for an air conditioner according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating division between preheat mode partitions according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An embodiment of the present invention provides an air conditioner preheating control method, and with reference to fig. 1, the method includes: controlling the air conditioner to enter a preheating mode according to the starting instruction; controlling a compressor, an expansion valve and an outdoor fan of the air conditioner to operate, and preheating an indoor heat exchanger; monitoring the temperature of an outer coil of the outdoor heat exchanger, the temperature of an outdoor environment and the temperature of an inner coil of the indoor heat exchanger in real time; and under the condition that the temperature of the inner coil is lower than the preset temperature, when the temperature of the outer coil is higher than or equal to the outdoor environment temperature, controlling the outdoor fan to stop running.
Firstly, the air conditioner enters a preheating mode when needed according to a starting instruction. The preheating mode is mainly characterized in that a high-temperature medium is generated to flow through the indoor heat exchanger through the operation of the compressor, the expansion valve and the outdoor fan, and then the indoor heat exchanger is preheated, so that the inner coil pipe of the indoor heat exchanger reaches a certain temperature before the air conditioner is started, the indoor fan can directly blow hot air when the air conditioner is started, the heating speed of the air conditioner can be improved, the effect of heating when the air conditioner is started is achieved, and the user experience is improved.
Furthermore, in the process that the air conditioner runs in the preheating mode, the running of the outdoor fan is controlled and adjusted according to the specific state of the temperature of the inner coil and the comparison between the temperature of the outer coil of the outdoor heat exchanger and the outdoor environment temperature. And before the temperature of the inner coil of the indoor unit reaches the preset temperature and when the temperature of the outer coil is more than or equal to the outdoor environment temperature, controlling the outdoor fan to stop running. At this time, if the outdoor fan runs, the heat at the external coil pipe can be dissipated to the outside, resulting in heat loss; the outdoor fan is controlled to stop running, so that the outward heat dissipation capacity of the air conditioning system can be reduced, and the energy-saving effect is achieved.
Before the temperature of the inner coil reaches the preset temperature, when the temperature of the outer coil is lower than the outdoor environment temperature; or when the temperature of the inner coil pipe is higher than the preset temperature; and controlling the outdoor fan to operate according to the preset rotating speed of the outdoor fan.
Further, the preheating mode is performed before the air conditioner enters the heating mode. When the air conditioner runs in a preheating mode, the indoor unit of the air conditioner does not run, and the standby indicator lamp is always kept in a closed state; the indoor fan and the air deflector are in a stop operation state; so as to avoid disturbing the indoor environment and reduce the user experience. The four-way valve keeps an opening state; and in order to ensure that the expansion valve has stable superheat degree and ensure that the air conditioning system stably runs, the expansion valve is always regulated according to a normal regulation mode.
On the basis of the above embodiment, further, before controlling the air conditioner to enter the preheating operation mode according to the start instruction, the method further includes: and judging whether the air conditioner meets the preheating starting condition or not. Before the air conditioner is controlled to enter the preheating mode, a judgment process is added, and more selection spaces can be provided for a user.
On the basis of the above embodiment, further, the warm-up start condition specifically includes: the air conditioner is allowed to start a preheating mode; whether the air conditioner is allowed to start the preheating mode or not is detected, and when the air conditioner is allowed to start the preheating mode, the air conditioner can start the preheating mode.
The permission judging step of the air conditioner is added, so that a user can judge whether the preheating mode function needs to be started according to actual needs, and the permission judging step is added for part of customers to save part of electric energy and not to wait for the preheating time after starting up, so that the user has more independent selection rights.
The warm-up start condition may further include: the outdoor environment temperature is lower than the preset outdoor temperature, and the indoor environment temperature is lower than the preset indoor temperature; and the judgment of the outdoor environment temperature and the indoor environment temperature is increased, so that the air conditioner is more intelligent. Specifically, only when the outdoor ambient temperature and the indoor ambient temperature are both lower than a set value, the preheating operation mode is started, and the condition that the preheating mode is started in a mess under the condition that cold air cannot be blown is avoided. The preset outdoor temperature may be 17 c, although other values are possible, such as 14 c, etc., and correspondingly, the indoor preset temperature may be 22 c, although other values are possible, such as 20 c, etc.
The warm-up start condition may further include: all parts of the internal machine and the external machine of the air conditioner operate normally. Namely, the indoor unit and the outdoor unit of the air conditioner can be started, operated and closed normally, and the problem of abnormal shutdown is avoided. Including the normal operation of the various sensors used to detect temperature. That is, it is detected whether the sensor is out of order before the preheating mode is started, and the air conditioner may enter the preheating mode when the sensor is out of order. Whether hardware has faults is detected firstly, and the condition that the preheating operation mode is frequently started or is always started due to hardware faults is avoided.
Whether the air conditioner can enter the preheating mode or not can be judged from any one of the three aspects, the condition that the air conditioner can enter the preheating mode can be simultaneously used from two of the three aspects, and the condition that the air conditioner can enter the preheating mode can be simultaneously used from the three aspects.
On the basis of the foregoing embodiment, further, the start instruction specifically includes: starting a preheating mode immediately; or starting a preheating mode at a preset time; or starting the preheating mode at a preset time before the set starting time of the air conditioner.
The air conditioner can be controlled to enter a preheating mode by receiving a preheating command started by a user. Similar to the judgment of increasing the right of the air conditioner, the preheating of the air conditioner is realized by actively starting a preheating instruction by a user, so that the user can have more choices.
In another possible implementation, the air conditioner may be further controlled to enter the preheating mode when a preset time for starting the preheating command is reached. The user can also directly set the time of presetting the starting preheating instruction according to actual needs, and after the starting time is reached, the air conditioner is controlled to start the preheating mode, so that the user has more independent control functions and is more humanized.
The user can also set the starting time of the air conditioner and set the preset time before the air conditioner is started to start the preheating mode.
On the basis of the above embodiment, further, controlling the operation of the compressor, the expansion valve and the outdoor fan of the air conditioner, and preheating the indoor heat exchanger specifically includes: and controlling and adjusting the specific operation of the preheating mode according to the temperature of the inner coil and the variation trend of the temperature.
The inner coil pipe is the pipeline of the evaporator of the indoor unit in the air conditioner. By acquiring the temperature of the coil, basic conditions are provided for selecting a preheating operation mode. The mode of acquiring the temperature of the coil pipe is various, for example, the temperature sensor on the coil pipe is used for directly acquiring the temperature of the coil pipe, or the temperature sensor at the air outlet is used for indirectly acquiring the temperature of the coil pipe, of course, in order to improve the accuracy of the acquisition, the real-time pressure of a refrigerant when entering and exiting the coil pipe can be detected, the mode of indirectly calculating the temperature of the coil pipe through a differential pressure value and the like.
During the preheating process, the designer hopes that the temperature of the coil is maintained at a stable temperature, but in the actual situation, the temperature of the coil fluctuates, or the temperature of the coil rises, or the temperature of the coil falls, the numerical value and the variation trend of the temperature of the coil need to be preferentially judged, so that the reference is provided for the subsequent selection of the preheating operation mode. The mode of judging the temperature of the coil pipe can be that the temperature sensor sends the temperature of the coil pipe to a control unit of the air conditioner, the air conditioner judges the specific numerical value and the variation trend of the temperature of the coil pipe according to a plurality of groups of fed back data, the judging process is more conventional operation, and the detailed expansion is not carried out any more.
When learning the concrete numerical value and the trend of change of interior coil pipe temperature, just can predetermine different procedures according to the condition of difference to rapid heating up when needs heat up, in time stop the intensification when the temperature is too high, avoid it to fall to low excessively including coil pipe temperature decline in-process, thereby when reducing the energy waste, reduced the fluctuation range of interior coil pipe temperature, promote user experience.
On the basis of the above embodiment, further referring to fig. 2, the controlling and adjusting the specific operation of the preheating mode according to the temperature of the inner coil and the variation trend thereof specifically includes: and when the temperature of the inner coil is lower than a first preset temperature and is in an ascending trend, controlling the air conditioner to operate in a first preheating mode. As shown in fig. 3, this stage is an ascending stage, and when the temperature of the coil is lower than the first preset temperature, the preheating temperature needs to be increased to be higher than the first preset temperature as soon as possible to ensure that the air conditioner does not blow cold air, and at this time, the air conditioner is controlled to start the first preheating mode to accelerate the temperature rise. The adjusting parameters of the first preheating mode at least comprise the opening degree of the expansion valve, the frequency of the compressor and the rotating speed of the outdoor fan.
As an example, the first preset temperature of the present invention may be 40 ℃, at which the air conditioner does not blow cold air initially; the tuning parameters for the first preheat mode may be: the compressor frequency is the conventional preheating frequency (e.g. 32Hz), the expansion valve opening is the conventional preheating opening (e.g. 130B, B stands for number of steps, the expansion valve is usually 480B), and the outdoor fan speed is the conventional preheating speed (e.g. 300 rpm).
It should be noted that the first preset temperature, the conventional preheating frequency of the compressor, the conventional preheating opening degree of the expansion valve, and the conventional preheating rotating speed of the outdoor fan are not fixed and can be adjusted according to factors such as the type of the air conditioner. In addition, for each parameter of the opening degree of the expansion valve, the frequency of the compressor and the rotating speed of the outdoor fan, the larger value, the conventional value and the smaller value can be adjusted according to specific application scenes. The principle of the invention lies in that the same parameter is used for different modes, and the protection scope of the invention should not be limited to the numerical value of each parameter.
And when the temperature of the inner coil pipe is greater than or equal to a first preset temperature and is in an ascending trend, controlling the air conditioner to operate in a second preheating mode. As shown in fig. 3, this stage is still the rising stage, but the temperature of the inner coil is already higher than the first preset temperature, and at this time, cold air cannot be blown, and only the temperature of the inner coil needs to be maintained within a reasonable interval, and at this time, the air conditioner is controlled to start the second preheating mode, and the temperature rising speed is reduced until the temperature cannot be raised any more. Similar to the first preheating mode, the adjusting parameters of the second preheating operation mode of the present invention at least include the opening degree of the expansion valve, the frequency of the compressor and the rotating speed of the outdoor fan.
As an example, the adjusting parameter of the second warm-up operation mode of the present invention may be: the compressor frequency is a small preheating frequency (for example, 20Hz), the expansion valve opening is a large preheating opening (for example, 480B, full opening), and the outdoor fan rotation speed is a large preheating rotation speed (for example, 600 rpm).
It should be noted that the above-mentioned smaller preheating frequency of the compressor, the larger preheating opening degree of the expansion valve and the larger preheating rotation speed of the outdoor fan are not fixed and can be adjusted according to factors such as the type of the air conditioner. In addition, for each parameter of the opening degree of the expansion valve, the frequency of the compressor and the rotating speed of the outdoor fan, the larger value, the conventional value and the smaller value can be adjusted according to specific application scenes. The principle of the invention lies in that the same parameter is used for different modes, and the protection scope of the invention should not be limited to the numerical value of each parameter.
When the temperature of the inner coil is greater than or equal to a second preset temperature and is in a descending trend, controlling the air conditioner to operate in a third preheating mode; as shown in fig. 3, the temperature does not continue to rise at this stage, and the trend of change enters the descending stage, but at this time, since the maximum temperature is taken as the starting point, as long as the maximum temperature is not lower than the second set temperature, there is no risk of blowing cold air, and at this time, the air conditioner is controlled to start the third preheating mode, so long as the temperature of the inner coil is maintained as much as possible, and the descending speed is slowed down. Similar to the first and second preheating modes, the adjustment parameters of the third preheating mode of the present invention include at least the expansion valve opening degree, the compressor frequency, and the outdoor fan rotation speed.
As an example, the second preset temperature of the present invention may be 38 ℃; the adjustment parameters of the third preheating mode may be: the compressor frequency is a small preheating frequency (for example, 22Hz), the expansion valve opening is a large preheating opening (for example, 470B), and the outdoor fan speed is a large preheating speed (for example, 580 rpm).
It should be noted that the above-mentioned smaller preheating frequency of the compressor, the larger preheating opening degree of the expansion valve and the larger preheating rotation speed of the outdoor fan are not fixed and can be adjusted according to factors such as the type of the air conditioner. In addition, for each parameter of the opening degree of the expansion valve, the frequency of the compressor and the rotating speed of the outdoor fan, the larger value, the conventional value and the smaller value can be adjusted according to specific application scenes. The principle of the invention lies in that the same parameter is used for different modes, and the protection scope of the invention should not be limited to the numerical value of each parameter.
And when the temperature of the inner coil is lower than the second preset temperature and is in a descending trend, controlling the air conditioner to operate in a fourth preheating mode. As shown in fig. 3, this stage is still in the decreasing stage, the third preheating mode cannot maintain the temperature of the inner coil above the second preset temperature, and then the temperature is decreased continuously, which may cause the occurrence of cold air blowing. Similar to the first, second and third preheating modes, the adjustment parameters of the fourth preheating mode of the present invention include at least the expansion valve opening degree, the compressor frequency and the outdoor fan rotation speed.
As an example, the adjustment parameters of the fourth preheating mode of the present invention may be: the compressor frequency is a conventional preheating frequency (e.g., 30Hz), the expansion valve opening is a conventional preheating opening (e.g., 133B), and the outdoor fan speed is a conventional preheating speed (e.g., 310 rpm).
It should be noted that the conventional preheating frequency of the compressor, the conventional preheating opening degree of the expansion valve, and the conventional preheating rotating speed of the outdoor fan are not fixed and can be adjusted according to factors such as the type of the air conditioner. In addition, for each parameter of the opening degree of the expansion valve, the frequency of the compressor and the rotating speed of the outdoor fan, the larger value, the conventional value and the smaller value can be adjusted according to specific application scenes. The principle of the invention lies in that the same parameter is used for different modes, and the protection scope of the invention should not be limited to the numerical value of each parameter.
Through the division of above-mentioned four stages, make the air conditioner can select preheating mode more accurately according to the actual temperature and the trend of change of interior coil pipe temperature, when reducing the energy waste, reduce the fluctuation range of interior coil pipe temperature.
On the basis of the above embodiment, further, the controlling and adjusting the specific operation of the preheating mode according to the temperature of the inner coil and the variation trend thereof further comprises: the first preset temperature is greater than or equal to the second preset temperature. The first preset temperature and the second preset temperature are both temperatures at which the air conditioner cannot blow cold air.
The temperature of the inner coil pipe can be different between the rising stage and the falling stage, and the set temperature for changing the preheating operation mode can be different, for example, a first preset temperature set in the rising stage is higher than a second preset temperature set in the falling stage, so as to prevent the frequency of the press from increasing and decreasing frequently, the frequency of the outer fan from switching frequently and the like, which is equivalent to a return difference temperature.
By controlling at least one of the operating frequency of the compressor, the opening degree of the expansion valve and the rotating speed of the outdoor fan, the temperature of the inner disc is stabilized at about a first preset temperature, the shutdown caused by overhigh temperature of the inner disc is avoided, and the effect caused by overlow temperature of the inner disc is avoided.
In addition, the first preheating mode and the fourth preheating mode both require rapid temperature rise, and the second preheating operation mode and the third preheating operation mode both require temperature maintenance, so in order to reduce frequent changes in the compressor frequency, the opening degree of the expansion valve, and the rotation speed of the outdoor fan, it is of course possible to set the parameters of the first preheating mode and the fourth preheating mode to be the same, and/or the second preheating operation mode and the third preheating operation mode may be the same.
Further, under the condition that the temperature of the inner coil is less than the preset temperature, when the temperature of the outer coil is more than or equal to the outdoor environment temperature, controlling the outdoor fan to stop running specifically comprises: when the air conditioner operates in the first preheating mode or the fourth preheating mode and the temperature of the external coil pipe is greater than or equal to the outdoor environment temperature, controlling the outdoor fan to stop operating; otherwise, controlling the outdoor fan to operate according to the preset rotating speed of the outdoor fan.
When the temperature of the external coil pipe is lower than the outdoor environment temperature, the air conditioner runs in the first preheating mode or the fourth preheating mode; or the air conditioner operates in a second preheating mode or a third preheating mode; and controlling the outdoor fan to operate according to the preset rotating speed of the outdoor fan.
On the basis of the above embodiment, further, the preheating control method further includes: monitoring the fault of the air conditioner, and controlling the air conditioner to stop running in a preheating mode when the fault of the air conditioner is monitored; or when the air conditioner receives a starting instruction or an instruction of stopping running the preheating mode, stopping running the preheating mode; alternatively, when the air conditioner is operated in the preheating mode for a set time, the preheating mode is stopped.
When a component of the air conditioner, such as a sensor for detecting temperature, is in fault, the operation of the preheating mode can be stopped, and misoperation is avoided. The user can manually pause the preheating mode, and the condition that the user cannot stop and energy is wasted when the air conditioner is operated by mistake is avoided. When the preheating operation mode is operated all the time, and the user does not start the air conditioner all the time, the arrival time of the user may be very late, and if the preheating operation mode is started all the time, the energy waste is also caused, so that a preset time is set, for example, 30 minutes, or certainly, an hour and the like, and the situation that the user starts the air conditioner later than the preset time or the preheating operation mode is started all the time and the electric energy is wasted due to the fact that the user does not return all the night can be avoided.
In particular, the opening degree of the expansion valve, the frequency of the compressor and the wind speed of the outdoor fan can be determined according to the side environment temperature of the outdoor unit, and more appropriate adjustment can be made for the outdoor environment, so that the temperature control of the inner coil pipe is more accurate, for example, for the first preheating mode and the second preheating mode, when the outdoor environment temperature is less than-5 ℃, the conventional preheating frequency can be 32Hz, the conventional preheating opening degree can be 130B, the conventional outer fan rotating speed can be 300rpm, the smaller preheating frequency can be 20Hz, the larger preheating opening degree can be 470B, and the larger preheating outer fan rotating speed can be 550 rpm; when the outdoor environment temperature is more than or equal to 8 ℃ and more than or equal to-5 ℃, the conventional preheating frequency can be 23Hz, the conventional preheating opening can be 135B, the rotating speed of the conventional external fan can be 320B, the smaller preheating frequency can be 17Hz, the larger preheating opening can be 475B, and the larger preheating rotating speed can be 570 rpm; when the outdoor environment temperature is more than or equal to 8 ℃, the conventional preheating frequency can be 15Hz, the conventional preheating opening can be 140B, the conventional outer fan rotating speed can be 340B, the smaller preheating frequency can be 13Hz, the larger preheating opening can be 480B, and the larger preheating rotating speed can be 600 rpm. The principle of the invention lies in that the parameters can be adaptively adjusted under the protection of different outdoor environment conditions, and the protection range of the invention is not limited to the value of each parameter.
In addition, when the preheating mode is changed, the opening degree of the expansion valve, the frequency of the compressor and the wind speed of the outdoor fan can be adjusted to the target values at the same time, so that the adjustment speed is faster. In addition, it is obvious that the division of the preheating control interval may be more than four kinds listed in the present invention, or six kinds, eight kinds, etc., and the rising stage and the falling stage may be divided into more intervals by increasing more preset values similar to the first preset temperature and the second preset temperature, thereby realizing more precise control.
On the basis of the foregoing embodiment, further, an air conditioner warm-up control device adopting the air conditioner warm-up control method described in the foregoing embodiment includes: the preheating starting module is used for controlling the air conditioner to enter a preheating mode according to a starting instruction; the preheating control module is used for controlling the operation of a compressor, an expansion valve and an outdoor fan of the air conditioner and preheating the indoor heat exchanger; the monitoring module is used for monitoring the temperature of an outer coil of the outdoor heat exchanger, the temperature of an outdoor environment and the temperature of an inner coil of the indoor heat exchanger in real time; and the outdoor fan control module is used for controlling the outdoor fan to stop running when the temperature of the outer coil pipe is more than or equal to the outdoor environment temperature under the condition that the temperature of the inner coil pipe is less than the preset temperature.
Further, an air conditioner preheating control device further includes: and the judging module is used for judging whether the air conditioner meets the preheating starting condition or not before controlling the air conditioner to enter the preheating operation mode according to the starting instruction. The monitoring module can also be used for monitoring the temperature of an inner coil of the indoor heat exchanger and the indoor temperature in real time. The preheat control module specifically includes a first preheat control module, a second preheat control module, a third preheat control module, and a fourth preheat control module.
On the basis of the above embodiment, further, an air conditioner includes the air conditioner preheating control device described in the above embodiment; the monitoring module comprises temperature sensors respectively arranged at the positions of an indoor coil, an outdoor coil and an inner coil of the air conditioner.
On the basis of the above embodiments, further, the present embodiment provides a preheating control method for an air conditioner, which is based on a complete air conditioner refrigerant system, a temperature sensor, and the like. The preheating control method is characterized in that before a user heats and starts up, a refrigerant system is operated in advance to heat an inner disc; the control method is not limited to the selection and setting of parameters of relevant temperature, valve opening, fan rotating speed and component action; the preheating mode interval division related parameter setting includes, but is not limited to, the above parameter setting, the preheating mode interval division is not limited to, but four intervals, and other heat storage frequencies, valve opening degrees, and rotation speeds can be set by increasing temperature points. The preheating control method is not limited to common air conditioning facilities such as a cabinet air conditioner, an on-hook air conditioner, a multi-split air conditioner, a hot air blower and the like. Aiming at accelerating the heating and blowing time; the temperature of the first hot air outlet is improved.
The preheating control method specifically comprises the following steps: when the indoor and outdoor temperature reaches the preheating requirement and a user does not start the machine for heating, the press is started in advance for a period of time (for example, 20-30min or longer) to store heat of a low-frequency (for example, 30Hz or even lower) refrigerant system (referring to the actions of all components of the heating refrigerant system, but before the preheating process starts to start the user, an indoor machine guide plate does not act, a panel does not display, an indoor fan does not act, and only an outdoor machine compressor, an outdoor fan, an expansion valve and a four-way valve perform necessary actions). The air conditioning system is complete (the indoor unit and the outdoor unit are complete and can normally refrigerate and heat), and is in a power-on and power-off state.
The preheat entry conditions include the requirements: a user allows the pre-heating heat storage function to be started; the environment temperature of the outdoor machine side space is lower than a certain temperature (for example, less than or equal to 17 ℃), and the environment temperature of the indoor machine side space is lower than a certain temperature (for example, less than or equal to 20 ℃); the internal machine and the external machine have no fault.
Preheating mode starting mode: a user manually starts a preheating key (comprising remote controller starting and mobile phone APP starting); the user sets the timing starting (for example, the preheating function is started at 10:00am-11:00 am); the user sets the startup time point to be started 30min (setting) before (for example, the user sets 11:00am startup, the preheating program is started at 10:30am for heat storage, the heat storage is closed at the right time for 30min (setting), or the user directly stores heat and transfers to heating startup after startup).
Before the air conditioner is started for heating, the temperature T of the inner disc of the indoor heat exchanger is increasedpWhen preheating function is carried out, the temperature T of the coil pipe of the outdoor heat exchangereAnd outdoor environment temperature TaoThe change is specifically as follows: first Te-TaoNot more than 0 ℃ for a certain time t1Rear Te-TaoIs greater than 0 ℃. Such as Te-TaoWhen the temperature is higher than 0 ℃, the outdoor fan is turned on, the heat is radiated outwards, and the energy is wasted. Therefore, when the inner disk temperature TpBefore reaching a set value, e.g. Te-TaoWhen the temperature is higher than 0 ℃, if the outdoor fan stops rotating, the outward heat dissipation capacity of the system can be reduced, so that the energy-saving effect is achieved, the outward heat dissipation capacity during heat storage is reduced, the energy is saved, and the temperature reaching time of the inner disc during heat storage is shortened.
When the air conditioner operates in the first or fourth preheating mode, if the temperature of the outdoor coil is more than or equal to the outdoor ambient temperature, the outdoor fan stops rotating (0 rpm); and if the temperature of the outdoor coil pipe is less than the outdoor environment temperature, the outdoor fan operates according to the set wind speed.
Preheat mode exit conditions: detecting faults of the internal machine and the external machine, wherein faults exist; starting up a user to enter other functions; the user has no other operation and reaches the accumulated running time (for example, 30min, which can be set); the user manually closes the heat storage function before heating; the user refuses to start the heat storage function before heating.
When preheating is changed into heating and other functions: and (4) quitting the preheating, directly changing the compressor, the electronic expansion valve and the four-way valve to the target action, and opening and closing the valve as fast as possible.
In summary, the invention can match different preheating operation modes according to the difference of the outer ring temperature, the difference of the inner coil temperature and the difference of the inner coil temperature variation trend, so as to make more reasonable parameter formulation, thereby more accurately controlling the coil temperature, ensuring that the inner coil temperature is more stable and the temperature jump range is smaller under the condition of not repeatedly starting and stopping the compressor, thereby reducing the energy waste and avoiding the unstable blowing temperature. Four preheating modes are used, intervals can be subdivided, and the temperature of the coil pipe can be controlled more accurately on the premise of not wasting energy. Meanwhile, the user has more control options, and energy waste caused by part of special conditions can be avoided. Likewise, the waste of energy in some special cases can be solved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A preheating control method of an air conditioner is characterized by comprising the following steps:
controlling the air conditioner to enter a preheating mode according to the starting instruction;
controlling a compressor, an expansion valve and an outdoor fan of the air conditioner to operate, and preheating an indoor heat exchanger;
monitoring the temperature of an outer coil of the outdoor heat exchanger, the temperature of an outdoor environment and the temperature of an inner coil of the indoor heat exchanger in real time;
and under the condition that the temperature of the inner coil is less than the preset temperature, when the temperature of the outer coil is more than or equal to the outdoor environment temperature, controlling the outdoor fan to stop running.
2. The air conditioner preheating control method according to claim 1, wherein before controlling the air conditioner to enter the preheating operation mode according to the start instruction, the method further comprises:
and judging whether the air conditioner meets the preheating starting condition or not.
3. The air conditioner preheating control method according to claim 2, wherein the preheating start condition specifically includes:
the air conditioner is allowed to start a preheating mode;
the outdoor environment temperature is lower than the preset outdoor temperature, and the indoor environment temperature is lower than the preset indoor temperature;
and at least one of the normal operation of each component of the internal machine and the external machine of the air conditioner.
4. The air conditioner preheating control method according to claim 1, wherein the start instruction specifically includes:
starting a preheating mode immediately;
or starting a preheating mode at a preset time;
or starting the preheating mode at a preset time before the set starting time of the air conditioner.
5. The air conditioner preheating control method according to any one of claims 1 to 4, wherein the operation of a compressor, an expansion valve and an outdoor fan of the air conditioner is controlled, and the preheating of the indoor heat exchanger specifically comprises:
and controlling and adjusting the specific operation of the preheating mode according to the temperature of the inner coil and the variation trend of the temperature.
6. The preheating control method of claim 5, wherein the controlling and adjusting the specific operation of the preheating mode according to the temperature of the inner coil and the variation trend thereof specifically comprises:
when the temperature of the inner coil is lower than a first preset temperature and is in an ascending trend, controlling the air conditioner to operate in a first preheating mode;
when the temperature of the inner coil is greater than or equal to a first preset temperature and is in an ascending trend, controlling the air conditioner to operate in a second preheating mode;
when the temperature of the inner coil is greater than or equal to a second preset temperature and is in a descending trend, controlling the air conditioner to operate in a third preheating mode;
and when the temperature of the inner coil is lower than a second preset temperature and is in a descending trend, controlling the air conditioner to operate in a fourth preheating mode.
7. The air conditioner warm-up control method according to claim 6, wherein the first preset temperature is equal to or greater than the second preset temperature;
under the condition that interior coil pipe temperature is less than preset temperature, when outer coil pipe temperature more than or equal to outdoor ambient temperature, control outdoor fan stop operation specifically includes: when the air conditioner operates in a first preheating mode or a fourth preheating mode, controlling an outdoor fan to stop operating when the temperature of the outer coil pipe is greater than or equal to the outdoor environment temperature; otherwise, controlling the outdoor fan to operate according to the preset rotating speed of the outdoor fan.
8. The air conditioner warm-up control method as claimed in claim 1, wherein the warm-up control method further comprises:
monitoring the fault of the air conditioner, and controlling the air conditioner to stop running in a preheating mode when the fault of the air conditioner is monitored;
or when the air conditioner receives a starting instruction or an instruction of stopping running the preheating mode, stopping running the preheating mode;
alternatively, when the air conditioner is operated in the preheating mode for a set time, the preheating mode is stopped.
9. An air conditioner preheating control device, comprising:
the preheating starting module is used for controlling the air conditioner to enter a preheating mode according to a starting instruction;
the preheating control module is used for controlling the operation of a compressor, an expansion valve and an outdoor fan of the air conditioner and preheating the indoor heat exchanger;
the monitoring module is used for monitoring the temperature of an outer coil of the outdoor heat exchanger, the temperature of an outdoor environment and the temperature of an inner coil of the indoor heat exchanger in real time;
and the outdoor fan control module is used for controlling the outdoor fan to stop running when the temperature of the inner coil is less than or equal to the preset temperature and the temperature of the outer coil is more than or equal to the outdoor environment temperature.
10. An air conditioner characterized by comprising the air conditioner warm-up control apparatus of claim 9 above; the monitoring module comprises temperature sensors respectively arranged at the positions of an indoor coil, an outdoor coil and an inner coil of the air conditioner.
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| CN201910815495.6A CN110594992A (en) | 2019-08-30 | 2019-08-30 | Air conditioner preheating control method and device and air conditioner |
| PCT/CN2020/111720 WO2021037138A1 (en) | 2019-08-30 | 2020-08-27 | Air conditioner preheating control method and device, and air conditioner |
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| CN111426018A (en) * | 2020-05-22 | 2020-07-17 | 海尔优家智能科技（北京）有限公司 | Air conditioning equipment control method and device, air conditioning equipment and storage medium |
| CN111780372A (en) * | 2020-07-09 | 2020-10-16 | 青岛海尔空调器有限总公司 | Control method of one-driving-multiple air conditioner |
| WO2021037138A1 (en) * | 2019-08-30 | 2021-03-04 | 青岛海尔空调器有限总公司 | Air conditioner preheating control method and device, and air conditioner |
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