CN108151245B - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN108151245B CN108151245B CN201711124331.6A CN201711124331A CN108151245B CN 108151245 B CN108151245 B CN 108151245B CN 201711124331 A CN201711124331 A CN 201711124331A CN 108151245 B CN108151245 B CN 108151245B
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000004378 air conditioning Methods 0.000 claims abstract description 48
- 238000005057 refrigeration Methods 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000007791 dehumidification Methods 0.000 claims abstract description 20
- 238000007664 blowing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 10
- 238000005485 electric heating Methods 0.000 description 7
- 238000000576 coating method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 231100000614 poison Toxicity 0.000 description 3
- 239000003440 toxic substance Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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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
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
- F24F2013/225—Means for preventing condensation or evacuating condensate for evacuating condensate by evaporating the condensate in the cooling medium, e.g. in air flow from the condenser
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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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention relates to an air conditioner and a control method thereof for preventing a surface of an electric heater of the air conditioner from being corroded, the control method comprising: and when the first preset condition, the second preset condition or the third preset condition is met, the electric heater is started to evaporate the condensed water on the surface of the electric heater through the heat generated by the electric heater until the time for starting the electric heater reaches a second preset time. The first preset condition is that the accumulated time of the compressor of the air conditioning device running at a frequency higher than or equal to a first preset frequency reaches a first preset time in a refrigeration or dehumidification mode; the second preset condition is that the air conditioner needs to be shut down temporarily when the indoor environment temperature reaches the preset temperature or needs to be shut down normally when receiving a shutdown signal for indicating the air conditioner to stop running in a refrigeration or dehumidification mode; the third preset condition is that the air conditioner needs to be switched into a heating mode, and the compressor stops running. Therefore, the surface of the electric heater of the air conditioner can be prevented from being corroded, and the air conditioner is safe, healthy, environment-friendly and low in cost.
Description
Technical Field
The invention relates to a common electric appliance, in particular to an air conditioning device and a control method thereof.
Background
The air conditioner can generate a large amount of condensed water in the evaporator in the refrigeration process, and the electric heating of the air conditioner is arranged in the evaporator. When the air conditioner is used in summer, condensed water adheres to the electric heating surface, and if the condensed water on the electric heating surface is not treated in time, the electric heating surface is corroded after long-term use, so that white powder, such as Al, is generated2O3. When the indoor fan of air conditioner worked, there was white powder to blow out from the wind channel, influenced user's use and experienced.
Some surfaces of electric heating use teflon (polytetrafluoroethylene) coatings, which can prevent the surfaces of electric heating from being corroded, but can cause environmental pollution in the process of manufacturing and processing the teflon coatings. Meanwhile, when the electric heating is in an abnormal working state (such as dry burning), the surface temperature is too high, the Teflon coating can begin to decompose and deteriorate, toxic substances are generated, the health of a user is harmed, and the cost of the product can be increased by adopting the Teflon coating.
Disclosure of Invention
It is an object of a first aspect of the present invention to overcome at least one of the drawbacks of the prior art and to provide a safe, healthy, environmentally friendly and cost-effective control method for preventing corrosion of the surface of an electric heater of an air conditioning unit.
It is a further object of the first aspect of the invention to ensure a comfortable experience for the user while removing condensation from the surface of the electric heater.
It is another further object of the first aspect of the present invention to control the outlet air temperature while removing condensate from the surface of the electric heater.
It is an object of a second aspect of the present invention to provide an air conditioning apparatus.
According to a first aspect of the present invention, there is provided a control method of an air conditioner for preventing a surface of an electric heater of the air conditioner from being corroded, the control method comprising:
when a first preset condition, a second preset condition or a third preset condition is met, the electric heater is started to evaporate condensed water on the surface of the electric heater through heat generated by the electric heater until the time for starting the electric heater reaches a second preset time; wherein
The first preset condition is that the accumulated time of the compressor of the air conditioning device running at a frequency higher than or equal to a first preset frequency reaches a first preset time in a refrigeration or dehumidification mode; the second preset condition is that the air conditioner needs to be shut down temporarily when the indoor environment temperature reaches the preset temperature or needs to be shut down when receiving a shutdown signal for indicating the air conditioner to stop running in a refrigeration or dehumidification mode; the third preset condition is that the air conditioner needs to be switched to a heating mode, and the compressor stops running.
Optionally, after the first preset condition or the second preset condition is met and the electric heater is turned on, the control method further includes:
judging whether the running frequency of the compressor is less than or equal to a third preset frequency or not;
if so, adjusting an air deflector of the air conditioning device to an upward air supply state; if not, keeping the state of the air deflector unchanged; wherein
The third preset frequency is greater than the first preset frequency.
Optionally, after the air deflector is adjusted to the upward air supply state, the control method further includes:
judging whether the running frequency of the compressor is less than a second preset frequency or not;
if so, setting the running frequency of the compressor to be a second preset frequency; if not, keeping the running frequency of the compressor unchanged; wherein
The first preset frequency, the second preset frequency and the third preset frequency are sequentially increased.
Optionally, a condition judgment flag is preset in the air conditioning device, and the condition judgment flag is set to 0 before the electric heater is turned on; and is
When the first preset condition is met, the condition judges that the state of the identification bit is unchanged; and when the second preset condition is met, setting the condition judgment identification bit to be 1.
Optionally, after the time that the electric heater is turned on reaches a second preset time period, the control method further includes:
turning off the electric heater;
judging whether the condition judgment identification bit is 0 or not;
if so, resetting both the time for starting the electric heater and the accumulated time for operating the compressor at the frequency higher than or equal to a first preset frequency, adjusting the air deflector to the state before starting the electric heater, and adjusting the frequency of the compressor to the operating frequency before starting the electric heater;
if not, setting the condition judgment identification bit to be 0, resetting the time for starting the electric heater, and executing the operation of temporary shutdown or normal shutdown.
Optionally, after the third preset condition is met and the electric heater is turned on, the control method further includes:
and adjusting the air deflector of the air conditioning device to an upward air supply state, and reducing the rotating speed of an indoor fan of the air conditioning device.
Optionally, after the time that the electric heater is turned on reaches a second preset time period, the control method further includes:
turning off the electric heater and resetting the time for turning on the electric heater;
and when the time for stopping the operation of the compressor reaches a third preset time, switching to the heating mode for operation.
Optionally, in the cooling or dehumidifying mode, when the air conditioner is shut down due to a fault, the electric heater is turned off, and the compressor is temporarily stored for a cumulative time period which is higher than or equal to a first preset frequency and is not cleared.
Optionally, the second preset frequency is set to make the outlet air temperature of the air conditioning device equal to the indoor temperature when the compressor operates at the second preset frequency after the electric heater is turned on; and is
The third preset frequency is set to enable the air outlet temperature of the air conditioning device to be equal to the air outlet temperature of the air conditioning device in the refrigeration mode when the compressor runs at the third preset frequency after the electric heater is started.
According to a second aspect of the present invention, there is also provided an air conditioning apparatus comprising an evaporator and an electric heater provided inside the evaporator, wherein
The electric heater is configured to be controlled to be started when a first preset condition, a second preset condition or a third preset condition is met, so that condensed water on the surface of the electric heater is evaporated by heat generated by the electric heater until the starting time of the electric heater reaches a second preset time period; wherein
The first preset condition is that the accumulated time of the compressor of the air conditioning device running at a frequency higher than or equal to a first preset frequency reaches a first preset time in a refrigeration or dehumidification mode; the second preset condition is that the air conditioner needs to be shut down temporarily when the indoor environment temperature reaches the preset temperature or needs to be shut down when receiving a shutdown signal for indicating the air conditioner to stop running in a refrigeration or dehumidification mode; the third preset condition is that the air conditioner needs to be switched to a heating mode, and the compressor stops running.
According to the air conditioner and the control method thereof, the electric heater is started in the refrigeration or dehumidification process, before normal shutdown or shutdown and before the compressor is switched to the heating mode for shutdown protection, and the condensed water on the surface of the electric heater can be evaporated by using the heat generated by the electric heater, so that the condensed water on the surface of the electric heater can be timely, effectively and quickly removed, the surface of the electric heater is prevented from being corroded to generate white powder, the air flow sent by the air conditioner is purified, and the use experience of a user is improved. Meanwhile, the surface of the electric heater does not need to be provided with any anticorrosive coating, so that the cost is saved, and no pollution or toxic substances are generated in the manufacturing process and the using process of the air conditioning device, thereby being safe, healthy and environment-friendly.
Further, in the process of refrigeration or dehumidification and before normal shutdown or shutdown, the air conditioning device can continuously supply air to the indoor while removing condensed water on the surface of the electric heater of the air conditioning device, and when the operating frequency of the compressor is low (for example, less than or equal to a third preset frequency), the air supply temperature felt by a user is high.
Further, during the cooling or dehumidifying process and before the normal shutdown or shutdown, if the operating frequency of the compressor is too low (e.g., less than the second preset frequency), the supply air temperature may be lower than the indoor temperature, which may seriously affect the user experience. At the moment, the running frequency of the compressor is forcibly set to be the second preset frequency, so that the air supply temperature of the air conditioning device is effectively controlled, and the influence of overhigh air supply temperature on the refrigeration experience of a user is avoided.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic flowchart of an air conditioner control method according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of an air conditioner control method according to a further embodiment of the present invention;
fig. 3 is a schematic structural block diagram of an air conditioner according to an embodiment of the present invention.
Detailed Description
In order not to affect the cooling experience for the user, the electric heater is typically not turned on in the cooling or dehumidification mode. Under the guidance of conventional thinking, those skilled in the art can avoid the corrosion of the surface of the electric heater by taking the structure or material of the electric heater as a starting point.
The invention breaks through the restriction of the traditional thought, and provides a novel control method of an air conditioner, which is used for preventing the surface of an electric heater of the air conditioner from being corroded. Fig. 1 is a schematic flowchart of an air conditioner control method according to an embodiment of the present invention. Referring to fig. 1, the control method includes: and when the first preset condition, the second preset condition or the third preset condition is met, the electric heater is started to evaporate the condensed water on the surface of the electric heater through the heat generated by the electric heater until the starting time of the electric heater reaches a second preset time. Specifically, the second preset time period is set such that after the time when the electric heater is turned on reaches the second preset time period, almost all the condensed water on the surface of the electric heater is evaporated, that is, the condensed water on the surface of the electric heater is completely removed. The specific value of the second preset time period mainly depends on the power of the electric heater, the arrangement mode of the electric heater in the evaporator, the type selection of the evaporator and the like.
Further, the first preset condition is that the accumulated time period that the compressor of the air conditioning device operates at the frequency higher than or equal to the first preset frequency reaches the first preset time period in the refrigeration or dehumidification mode. The second preset condition is that the air conditioner needs to be shut down temporarily when the indoor ambient temperature reaches the preset temperature or needs to be shut down normally when receiving a shutdown signal for instructing the air conditioner to stop running in the cooling or dehumidifying mode (at this time, the air conditioner has not been shut down or shut down, that is, the compressor has not been shut down yet). The third preset condition is that the air conditioner needs to be switched into a heating mode, and the compressor stops running. That is, in the process of compressor shutdown protection during refrigeration or dehumidification, before normal shutdown or shutdown and before switching to the heating mode, the electric heater is started, and the condensed water on the surface of the electric heater can be evaporated by using the heat generated by the electric heater, so that the condensed water on the surface of the electric heater can be effectively and quickly removed in time, the surface of the electric heater is prevented from being corroded to generate white powder, the air flow sent out by the air conditioning device is purified, and the use experience of a user is improved. Meanwhile, the surface of the electric heater does not need to be provided with any anticorrosive coating, so that the cost is saved, and no pollution or toxic substances are generated in the manufacturing process and the using process of the air conditioning device, thereby being safe, healthy and environment-friendly.
In particular, in the cooling or dehumidification mode, not all operating conditions produce a sufficient amount of condensed water that can corrode the surface of the electric heater. When the operating frequency of the compressor is low, for example, below the first preset frequency, the condensed water on the surface of the electric heater is very little and is easily evaporated naturally. When the compressor runs at a frequency higher than the first preset frequency, the condensed water on the surface of the electric heater is obviously increased, and when the time accumulation of the compressor running at the frequency higher than or equal to the first preset frequency reaches a first preset time period, the condensed water on the surface of the electric heater is accumulated to a certain amount and needs to be removed.
Fig. 2 is a schematic flowchart of an air conditioner control method according to a further embodiment of the present invention. In some embodiments of the present invention, after the first preset condition or the second preset condition is satisfied and the electric heater is turned on, the control method of the present invention further includes:
judging whether the running frequency of the compressor is less than or equal to a third preset frequency, namely whether the running frequency of the compressor is between the first preset frequency and the third preset frequency;
if so, adjusting an air deflector of the air conditioning device to an upward air supply state; if not, keeping the state of the air guide plate unchanged; wherein
The third predetermined frequency is greater than the first predetermined frequency.
In the refrigeration or dehumidification process and before the normal shutdown or shutdown, the air conditioner can continuously supply air to the indoor while removing the condensed water on the surface of the electric heater of the air conditioner, and when the operating frequency of the compressor is low (for example, less than or equal to a third preset frequency), the air supply temperature felt by a user body is higher.
In order to better satisfy the refrigeration experience effect of the user, the third preset frequency may be set to make the outlet air temperature of the air conditioning device equal to or close to the outlet air temperature of the air conditioning device in the refrigeration mode when the compressor operates at the third preset frequency after the electric heater is turned on. Correspondingly, when the compressor runs at a frequency higher than the third preset frequency after the electric heater is turned on, the outlet air temperature of the air conditioning device is lower and at least lower than the outlet air temperature of the air conditioning device in the cooling mode. After the electric heater is started, when the compressor runs at a frequency lower than a third preset frequency, the air outlet temperature of the air conditioning device is higher than the air outlet temperature of the air conditioning device in the refrigeration mode.
That is to say, when the outlet air temperature of the air conditioner is equal to, close to or lower than the outlet air temperature of the air conditioner in the cooling mode, the difference of the outlet air temperature sensed by the user before and after the electric heater is turned on is not obvious, so that the cooling experience of the user is not affected by turning on the electric heater, and at the moment, the position of the air deflector can be kept unchanged. When the air outlet temperature of the air conditioner is higher than the air outlet temperature of the air conditioner in the refrigeration mode, the air outlet temperature sensed by a user before and after the electric heater is started is obviously different, and in order to avoid the direct perception of the difference by the user, the position of the air deflector is adjusted to the healthy upward blowing position, so that the obvious influence on the refrigeration experience of the user caused by the starting of the electric heater is avoided.
In some embodiments of the present invention, after the air deflector is adjusted to the upward blowing state, the control method of the present invention further includes:
judging whether the running frequency of the compressor is smaller than a second preset frequency, namely whether the running frequency of the compressor is between the first preset frequency and the second preset frequency;
if so (namely the running frequency of the compressor is between the first preset frequency and the second preset frequency), setting the running frequency of the compressor as the second preset frequency; if not (namely the running frequency of the compressor is between the second preset frequency and the third preset frequency), keeping the running frequency of the compressor unchanged; wherein
The first preset frequency, the second preset frequency and the third preset frequency are increased in sequence.
During the refrigeration or dehumidification process and before the normal shutdown or shutdown, if the operating frequency of the compressor is too low (e.g., less than the second preset frequency), the supply air temperature is lower than the indoor temperature, which seriously affects the refrigeration experience of the user. At the moment, the running frequency of the compressor is forcibly set to be the second preset frequency, so that the air supply temperature of the air conditioning device is effectively controlled, and the influence of overhigh air supply temperature on the refrigeration experience of a user is avoided.
In order to better satisfy the refrigeration experience effect of the user, the second preset frequency may be set to make the outlet air temperature of the air conditioning device equal to the indoor temperature when the compressor operates at the second preset frequency after the electric heater is turned on. Accordingly, when the compressor operates at a frequency higher than the second preset frequency after the electric heater is turned on, the outlet air temperature of the air conditioning device is lower than the indoor temperature. And after the electric heater is started, when the compressor runs at a frequency lower than a second preset frequency, the air outlet temperature of the air conditioning device is higher than the indoor temperature.
After the electric heater is started, when the compressor runs at a second preset frequency or a frequency higher than the second preset frequency, although the air outlet temperature felt by a user body is still high, the experience effect of refrigeration cannot be achieved, the air outlet temperature of the air conditioning device is not higher than the indoor temperature after all, and the experience requirements of the user can be met by adjusting the air guide plate. If the compressor runs at a frequency lower than the second preset frequency after the electric heater is started, the air outlet temperature of the air conditioning device is higher than the indoor temperature, the heating effect is achieved, and the refrigerating experience of a user can be seriously influenced. At this time, the present invention forcibly sets the operation frequency of the compressor to the second preset frequency, thereby effectively controlling the blowing air temperature of the air conditioner.
In some embodiments of the present invention, since the compressor is in the operating state under the first preset condition and the second preset condition, the control methods in the further embodiments of the present invention are consistent, that is, the operating frequency of the compressor and the state of the air guide plate are both controlled to control the outlet air temperature, so that the user obtains the best cooling experience effect. In order to distinguish whether the electric heater is started in response to the first preset condition or the second preset condition, a condition judgment identification bit is also preset in the air conditioning device. Before the electric heater is turned on, the condition judgment flag is set to 0. When the first preset condition is met, the condition judges that the state of the identification bit is unchanged, namely is still 0; and when the second preset condition is met, setting the condition judgment identification bit to be 1.
Further, when the time for turning on the electric heater reaches a second preset time period, the control method of the invention further comprises:
turning off the electric heater;
judging whether the identification bit is 0 or not according to the judgment condition;
if so (indicating that the starting of the electric heater is in response to a first preset condition), clearing the starting time of the electric heater and the accumulated running time of the compressor running at a frequency higher than or equal to a first preset frequency, adjusting the air deflector to a state before the electric heater is started, and adjusting the frequency of the compressor to a running frequency before the electric heater is started;
if not (the starting of the electric heater is responded to the second preset condition), setting the condition judgment identification bit to be 0, clearing the starting time of the electric heater, and executing the operation of temporary shutdown or normal shutdown.
In some embodiments of the present invention, after the third preset condition is satisfied and the electric heater is turned on, the control method of the present invention further includes:
the air guide plate of the air conditioner is adjusted to an upward air supply state, and the rotating speed of an indoor fan of the air conditioner is reduced.
Under a third preset condition, the compressor is in a shutdown protection state, at the moment, air flow does not exchange heat, and in order to avoid influence on use experience of a user, the air deflector is adjusted to a healthy upward blowing position, the rotating speed of the indoor fan is reduced, air is sent at a low speed, and the situation that the user directly feels change of air outlet temperature can be avoided.
Further, when the time for turning on the electric heater reaches a second preset time period, the control method of the invention further comprises:
turning off the electric heater, and resetting the time for turning on the electric heater;
and when the time for stopping the operation of the compressor reaches a third preset time, switching to the heating mode for operation.
The third preset duration is the duration for which compressor shutdown protection is to last. In some embodiments, the third predetermined duration may be any length of time value ranging from 2 to 4 min. For example, the third preset time period may be 2min, 3min, or 4 min.
In some embodiments of the present invention, in the cooling or dehumidifying mode, when the air conditioner is stopped due to a fault, the electric heater is turned off, and the compressor is temporarily stored for non-zero at an accumulated time period higher than or equal to a first preset frequency. When the fault is cleared and the air conditioner is recovered, the compressor continues to accumulate for a cumulative time period which is higher than or equal to the first preset frequency.
The invention also provides an air conditioning device. Fig. 3 is a schematic structural block diagram of an air conditioner according to an embodiment of the present invention. The air conditioner 1 of the present invention includes an evaporator 10 and an electric heater 20 provided inside the evaporator 10. The electric heater 20 is configured to be controlled to be turned on when the first preset condition, the second preset condition or the third preset condition is met, so as to evaporate the condensed water on the surface of the electric heater 20 by the heat generated by the electric heater 20 until the time when the electric heater 20 is turned on reaches the second preset time period.
The first preset condition is that the accumulated time of the compressor of the air conditioning device running at the frequency higher than or equal to the first preset frequency reaches a first preset time in the refrigeration or dehumidification mode. The second preset condition is that the air conditioner needs to be shut down temporarily when the indoor ambient temperature reaches the preset temperature or needs to be shut down normally when receiving a shutdown signal for instructing the air conditioner to stop running in the cooling or dehumidifying mode (at this time, the air conditioner has not been shut down or shut down, that is, the compressor has not been shut down yet). The third preset condition is that the air conditioner needs to be switched into a heating mode, and the compressor stops running.
Further, the air conditioner 1 further includes a compressor and an air guide plate. The air deflector is arranged at the air outlet of the indoor unit of the air conditioner 1 to adjust the air outlet direction of the air outlet. The air deflector is configured to be controlled to be adjusted to an upward air supply state when the operating frequency of the compressor is greater than or equal to a first preset frequency and less than or equal to a third preset frequency, and to be controlled to keep the state unchanged when the operating frequency of the compressor is greater than the third preset frequency, wherein the third preset frequency is greater than the first preset frequency.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (7)
1. A control method of an air conditioner for preventing a surface of an electric heater of the air conditioner from being corroded, characterized by comprising:
when a first preset condition or a second preset condition is met, starting the electric heater to evaporate condensed water on the surface of the electric heater through heat generated by the electric heater until the time for starting the electric heater reaches a second preset time; wherein
The first preset condition is that the accumulated time of the compressor of the air conditioning device running at a frequency higher than or equal to a first preset frequency reaches a first preset time in a refrigeration or dehumidification mode; the second preset condition is that the air conditioner needs to be shut down temporarily when the indoor environment temperature reaches the preset temperature or needs to be shut down when receiving a shutdown signal for indicating the air conditioner to stop running in a refrigeration or dehumidification mode;
when the first preset condition or the second preset condition is met and the electric heater is turned on, the control method further comprises:
judging whether the running frequency of the compressor is less than or equal to a third preset frequency or not;
if so, adjusting an air deflector of the air conditioning device to an upward air supply state; if not, keeping the state of the air deflector unchanged; wherein
The third preset frequency is greater than the first preset frequency; the first preset frequency is selected to be that after the time that the compressor operates at the frequency higher than or equal to the first preset frequency is accumulated for the first preset time, the condensed water on the surface of the electric heater is accumulated to a certain amount; the third preset frequency is set to enable the air outlet temperature of the air conditioning device to be equal to or close to the air outlet temperature of the air conditioning device before the electric heater is started in the refrigeration mode when the compressor runs at the third preset frequency after the electric heater is started.
2. The control method according to claim 1, wherein after the air deflector is adjusted to the upward blowing state, the control method further comprises:
judging whether the running frequency of the compressor is less than a second preset frequency or not;
if so, setting the running frequency of the compressor to be a second preset frequency; if not, keeping the running frequency of the compressor unchanged; wherein
The first preset frequency, the second preset frequency and the third preset frequency are sequentially increased.
3. The control method according to claim 2,
a condition judgment identification bit is preset in the air conditioning device, and is set to be 0 before the electric heater is started; and is
When the first preset condition is met, the condition judges that the state of the identification bit is unchanged; and when the second preset condition is met, setting the condition judgment identification bit to be 1.
4. The control method according to claim 3, wherein when the time for which the electric heater is turned on reaches a second preset time period, the control method further comprises:
turning off the electric heater;
judging whether the condition judgment identification bit is 0 or not;
if so, resetting both the time for starting the electric heater and the accumulated time for operating the compressor at the frequency higher than or equal to a first preset frequency, adjusting the air deflector to the state before starting the electric heater, and adjusting the frequency of the compressor to the operating frequency before starting the electric heater;
if not, setting the condition judgment identification bit to be 0, resetting the time for starting the electric heater, and executing the operation of temporary shutdown or normal shutdown.
5. The control method according to claim 4,
in the refrigeration or dehumidification mode, when the air conditioner stops due to a fault, the electric heater is closed, and the compressor operates at a frequency higher than or equal to a first preset frequency for an accumulated time period and is temporarily stored without zero clearing.
6. The control method according to claim 2,
the second preset frequency is set to make the outlet air temperature of the air conditioning device equal to the indoor temperature when the compressor operates at the second preset frequency after the electric heater is turned on.
7. An air conditioning device comprises an evaporator and an electric heater arranged in the evaporator, and is characterized in that,
the electric heater is configured to be controlled to be started when a first preset condition or a second preset condition is met so as to evaporate condensed water on the surface of the electric heater through heat generated by the electric heater until the time for starting the electric heater reaches a second preset time; wherein
The first preset condition is that the accumulated time of the compressor of the air conditioning device running at a frequency higher than or equal to a first preset frequency reaches a first preset time in a refrigeration or dehumidification mode; the second preset condition is that the air conditioner needs to be shut down temporarily when the indoor environment temperature reaches the preset temperature or needs to be shut down when receiving a shutdown signal for indicating the air conditioner to stop running in a refrigeration or dehumidification mode;
when the first preset condition or the second preset condition is met, and the electric heater is started, and when the operating frequency of the compressor is less than or equal to a third preset frequency, the air deflector of the air conditioning device is adjusted to an upward air supply state; when the operating frequency of the compressor is greater than a third preset frequency, keeping the state of the air deflector unchanged; wherein
The third preset frequency is greater than the first preset frequency; the first preset frequency is selected to be that after the time that the compressor operates at the frequency higher than or equal to the first preset frequency is accumulated for the first preset time, the condensed water on the surface of the electric heater is accumulated to a certain amount; the third preset frequency is set to enable the air outlet temperature of the air conditioning device to be equal to or close to the air outlet temperature of the air conditioning device before the electric heater is started in the refrigeration mode when the compressor runs at the third preset frequency after the electric heater is started.
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| CN201711124331.6A CN108151245B (en) | 2017-11-14 | 2017-11-14 | Air conditioner and control method thereof |
| PCT/CN2018/115094 WO2019096102A1 (en) | 2017-11-14 | 2018-11-12 | Air conditioning device and control method thereof |
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| CN108151245B (en) * | 2017-11-14 | 2020-02-04 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN109373539B (en) * | 2018-11-07 | 2020-01-31 | 珠海格力电器股份有限公司 | Air conditioner and control method and device thereof |
| CN110118418A (en) * | 2019-04-24 | 2019-08-13 | 宁波奥克斯电气股份有限公司 | A kind of auxiliary heat of air conditioner electric removes condensation control method and air conditioner |
| CN110986250A (en) * | 2019-11-12 | 2020-04-10 | 青岛海尔空调器有限总公司 | Drying and mildew-proof control method and device for air conditioner and air conditioner |
| CN111578552A (en) * | 2020-05-22 | 2020-08-25 | 广东美的制冷设备有限公司 | Air conditioning system, air conditioner and control method of air conditioning system |
| CN113251636A (en) * | 2021-05-10 | 2021-08-13 | 青岛海尔空调器有限总公司 | Air conditioner control method and device, electronic equipment and air conditioner |
| CN114294796B (en) * | 2022-01-04 | 2023-07-04 | 广东美的制冷设备有限公司 | Drip removal control method of air conditioner, controller, air conditioner and storage medium |
| CN114543310A (en) * | 2022-01-29 | 2022-05-27 | 青岛海尔空调器有限总公司 | Control method and control device for air conditioner, air conditioner and storage medium |
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