CN108168028B - Method for refrigerating and defrosting of mobile air conditioner, mobile air conditioner and storage medium - Google Patents
Method for refrigerating and defrosting of mobile air conditioner, mobile air conditioner and storage medium Download PDFInfo
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- CN108168028B CN108168028B CN201810009421.9A CN201810009421A CN108168028B CN 108168028 B CN108168028 B CN 108168028B CN 201810009421 A CN201810009421 A CN 201810009421A CN 108168028 B CN108168028 B CN 108168028B
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Abstract
The invention discloses a method for refrigerating and defrosting a mobile air conditioner, which comprises the following steps of detecting the temperature of an indoor heat exchanger when the mobile air conditioner is in a refrigerating mode; judging whether the temperature of the indoor heat exchanger is lower than a preset frosting temperature or not; and when the temperature of the indoor heat exchanger is lower than the frosting temperature, adjusting the operation parameters of the mobile air conditioner so as to increase the temperature of the indoor heat exchanger. The invention also discloses a mobile air conditioner and a storage medium. According to the technical scheme, whether the indoor heat exchanger has a frosting risk is determined by detecting the temperature of the indoor heat exchanger and judging whether the temperature of the indoor heat exchanger is lower than a preset frosting temperature, and when the indoor heat exchanger has the frosting risk, the running parameters of the mobile air conditioner are adjusted to improve the frosting condition of the indoor heat exchanger, so that the frosting condition of the indoor heat exchanger can be improved without stopping the running of a compressor, the heat exchange effect and the running reliability of a system are ensured, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method for refrigerating and defrosting a mobile air conditioner, the mobile air conditioner and a storage medium.
Background
The mobile air conditioner has the characteristics of no outdoor unit, convenience and low cost, and is widely applied to places such as offices, outdoor temporary command centers or open workshops. When the mobile air conditioner is used for conventional refrigeration and is required to operate under the minimum working condition, if the temperature of the evaporator is lower than zero, frost can be generated on the surface of the evaporator, so that the heat exchange of a system is influenced, and the operation reliability of the system is reduced.
In the prior art, when frost is generated on the surface of an evaporator, a conventional method is to enter an anti-freezing protection mode according to the frost formation condition of a mobile air conditioner, that is, when the temperature of the evaporator is lower than zero, a compressor is turned off to stop the operation of the compressor, and refrigeration is restarted until the frost on the surface of the evaporator is removed. The mode that the compressor is stopped to run to achieve the defrosting purpose is adopted, cold air output is stopped during defrosting, and the using effect of the whole machine and user experience are greatly influenced.
Disclosure of Invention
The invention mainly aims to provide a method for refrigerating and defrosting a mobile air conditioner, the mobile air conditioner and a storage medium, and aims to solve the problem that the use effect and the user experience of the whole mobile air conditioner are influenced because the conventional mobile air conditioner adopts a mode of stopping running a compressor to defrost.
In order to achieve the above object, the present invention provides a method for refrigerating and defrosting a mobile air conditioner, which comprises the following steps:
detecting the temperature of an indoor heat exchanger when the mobile air conditioner is in a refrigeration mode;
judging whether the temperature of the indoor heat exchanger is lower than a preset frosting temperature or not;
and when the temperature of the indoor heat exchanger is lower than the frosting temperature, adjusting the operation parameters of the mobile air conditioner to increase the temperature of the indoor heat exchanger.
Preferably, the method for refrigerating and defrosting of the mobile air conditioner further comprises the following steps:
detecting whether the mobile air conditioner operates under the minimum working condition;
and when the mobile air conditioner operates under the minimum working condition, executing the step of detecting the temperature of the indoor heat exchanger.
Preferably, the adjusting of the operation parameters of the mobile air conditioner includes:
and increasing the opening degree of an electronic expansion valve of the mobile air conditioner.
Preferably, after the step of increasing the opening degree of the electronic expansion valve of the mobile air conditioner, the method further includes:
after a first time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value or not;
and when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than the preset temperature difference threshold value, closing a water pumping motor of the mobile air conditioner.
Preferably, after the step of turning off the water pumping motor of the mobile air conditioner, the method further comprises:
after a second time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value or not;
and when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value, switching an outdoor fan of the mobile air conditioner to a low gear.
Preferably, after the step of switching the outdoor fan of the mobile air conditioner to the low gear, the method further comprises:
after a third time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value or not;
and when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value, switching an indoor fan of the mobile air conditioner to a high-speed gear.
Preferably, after the step of switching the indoor fan of the mobile air conditioner to a high gear, the method further comprises:
after a fourth time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference value or not;
and when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference value, stopping operating the compressor of the mobile air conditioner.
Preferably, the adjusting of the operation parameters of the mobile air conditioner includes:
closing a water pumping motor of the mobile air conditioner;
or, switching an outdoor fan of the mobile air conditioner to a low gear;
or switching the indoor fan of the mobile air conditioner to a high-speed gear.
In order to achieve the above object, the present invention further provides a mobile air conditioner, which includes a processor, a memory, and a computer program stored in the memory and being executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the method for refrigerating and defrosting of the mobile air conditioner as described above.
In addition, in order to achieve the above object, the present invention further provides a computer readable storage medium, wherein the storage medium stores a control program for mobile air-conditioning refrigeration defrosting, and the control program for mobile air-conditioning refrigeration defrosting, when executed by a processor, implements the steps of the method for mobile air-conditioning refrigeration defrosting as described above.
According to the method for refrigerating and defrosting of the mobile air conditioner, the mobile air conditioner and the storage medium provided by the embodiment of the invention, whether the temperature of the indoor heat exchanger is lower than the preset frosting temperature or not is judged, whether the indoor heat exchanger has the frosting risk or not is determined, and when the indoor heat exchanger has the frosting risk, the operation parameters of the mobile air conditioner are adjusted to improve the frosting condition of the indoor heat exchanger, so that the frosting condition of the indoor heat exchanger can be improved without stopping the operation of a compressor, the heat exchange effect of the mobile air conditioner and the operation reliability of a system are ensured, and meanwhile, the user experience is improved.
Drawings
Fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of the method for refrigerating and defrosting a mobile air conditioner according to the present invention;
FIG. 3 is a schematic flow chart of a method for refrigerating and defrosting a mobile air conditioner according to a second embodiment of the present invention;
FIG. 4 is a schematic flow chart of a method for refrigerating and defrosting a mobile air conditioner according to a third embodiment of the invention;
fig. 5 is a schematic flow chart of a method for refrigerating and defrosting a mobile air conditioner according to a fourth embodiment of the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: detecting the temperature of an indoor heat exchanger when the mobile air conditioner is in a refrigeration mode; judging whether the temperature of the indoor heat exchanger is lower than a preset frosting temperature or not; and when the temperature of the indoor heat exchanger is lower than the frosting temperature, adjusting the operation parameters of the mobile air conditioner to increase the temperature of the indoor heat exchanger.
In the prior art, when frost is generated on the surface of the evaporator, the conventional method is to enter an anti-freezing protection mode according to the frost formation condition of the mobile air conditioner, that is, when the temperature of the evaporator is lower than zero, the compressor is turned off, so that the compressor stops running, and refrigeration is restarted until the frost on the surface of the evaporator is removed. The mode that the compressor is stopped to run to achieve the defrosting purpose is adopted, cold air output is stopped during defrosting, and the using effect of the whole machine and user experience are greatly influenced.
The invention provides a solution, which is characterized in that whether the temperature of an indoor heat exchanger is lower than a preset frosting temperature or not is determined by detecting the temperature of the indoor heat exchanger, and when the indoor heat exchanger has the frosting risk, the running parameters of a mobile air conditioner are adjusted to improve the frosting condition of the indoor heat exchanger, so that the frosting condition of the indoor heat exchanger can be improved without stopping the running of a compressor, the heat exchange effect of the mobile air conditioner and the running reliability of a system are ensured, and the user experience is improved.
As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention can be a mobile air conditioner, a control device, an intelligent terminal, an intelligent controller and other electronic equipment, such as a mobile phone, an intelligent household appliance controller and other electronic equipment.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the terminal shown in fig. 1 does not constitute a limitation on the terminal structure, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. For example, the terminal structure may further include a sensor, a display module, an audio circuit, a WiFi module, a battery backup module, and the like, wherein the sensor includes a temperature sensor and the like, the temperature sensor is disposed on an indoor heat exchanger of the mobile air conditioner for detecting a temperature of the indoor heat exchanger, and the temperature sensor is electrically connected to the processor 1001.
As shown in fig. 1, the memory 1005, which is a storage medium, may include an operating system, a network communication module, a user interface module, and a control program for cooling and defrosting of the mobile air conditioner.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call the control program for cooling and defrosting of the mobile air conditioner stored in the memory 1005, and perform the following operations:
detecting the temperature of an indoor heat exchanger when the mobile air conditioner is in a refrigeration mode;
judging whether the temperature of the indoor heat exchanger is lower than a preset frosting temperature or not;
and when the temperature of the indoor heat exchanger is lower than the frosting temperature, adjusting the operation parameters of the mobile air conditioner to increase the temperature of the indoor heat exchanger.
Further, the processor 1001 may call the control program for cooling and defrosting of the mobile air conditioner stored in the memory 1005, and also perform the following operations:
detecting whether the mobile air conditioner operates under the minimum working condition;
and when the mobile air conditioner operates under the minimum working condition, executing the step of detecting the temperature of the indoor heat exchanger.
Further, the processor 1001 may call the control program for cooling and defrosting of the mobile air conditioner stored in the memory 1005, and also perform the following operations:
and increasing the opening degree of an electronic expansion valve of the mobile air conditioner.
Further, the processor 1001 may call the control program for cooling and defrosting of the mobile air conditioner stored in the memory 1005, and also perform the following operations:
after a first time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value or not;
and when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than the preset temperature difference threshold value, closing a water pumping motor of the mobile air conditioner.
Further, the processor 1001 may call the control program for cooling and defrosting of the mobile air conditioner stored in the memory 1005, and also perform the following operations:
after a second time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value or not;
and when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value, switching an outdoor fan of the mobile air conditioner to a low gear.
Further, the processor 1001 may call the control program for cooling and defrosting of the mobile air conditioner stored in the memory 1005, and also perform the following operations:
after a third time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value or not;
and when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value, switching an indoor fan of the mobile air conditioner to a high-speed gear.
Further, the processor 1001 may call the control program for cooling and defrosting of the mobile air conditioner stored in the memory 1005, and also perform the following operations:
after a fourth time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference value or not;
and when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference value, stopping operating the compressor of the mobile air conditioner.
Further, the processor 1001 may call the control program for cooling and defrosting of the mobile air conditioner stored in the memory 1005, and also perform the following operations:
closing a water pumping motor of the mobile air conditioner;
or, switching an outdoor fan of the mobile air conditioner to a low gear;
or switching the indoor fan of the mobile air conditioner to a high-speed gear.
Referring to fig. 2, fig. 2 is a first embodiment of a method for refrigerating and defrosting a mobile air conditioner according to the present invention.
In the embodiment of the invention, the mobile air conditioner comprises a compressor, an indoor heat exchanger, a throttling device and an outdoor heat exchanger which are sequentially connected to form a main circulation loop. The bottom of the outdoor heat exchanger is provided with a water receiving disc for receiving condensed water on the outer surface of the outdoor heat exchanger in the refrigeration process; the throttling device comprises an electronic expansion valve. The mobile air conditioner further comprises a water pumping motor, a water pumping wheel is arranged on a shaft of the water pumping motor and located in the water receiving tray, and the water pumping wheel is driven by the water pumping motor to enable condensed water in the water receiving tray to be splashed onto the outdoor heat exchanger, so that the temperature of the outdoor heat exchanger is reduced, and the heat exchange effect of the outdoor heat exchanger is improved.
The method for refrigerating and defrosting the mobile air conditioner comprises the following steps:
step S10, when the mobile air conditioner is in the cooling mode, the temperature of the indoor heat exchanger is detected;
when the mobile air conditioner is in a refrigeration mode, the indoor heat exchanger in the mobile air conditioner is an evaporator, and when the temperature of the evaporator is too low, frost can be generated on the surface of the evaporator, so that the reliability of heat exchange and operation of the system is influenced. A temperature sensor is arranged on an indoor heat exchanger of the mobile air conditioner to detect the temperature of the indoor heat exchanger.
The temperature sensor may be disposed at any position of the outer surface of the indoor heat exchanger, such as at a middle position of the indoor heat exchanger or an inlet end of the indoor heat exchanger or an outlet end of the indoor heat exchanger.
Step S20, judging whether the temperature of the indoor heat exchanger is lower than a preset frosting temperature;
the frosting temperature is the critical temperature of the frost generated on the surface of the indoor heat exchanger, when the temperature of the indoor heat exchanger is lower than the critical temperature, the frost is generated on the surface of the indoor heat exchanger, when the temperature of the indoor heat exchanger is higher than the critical temperature, the frost is not generated on the surface of the indoor heat exchanger, and the normal operation of the system can be ensured.
The frosting temperature can be preset differently according to different presets of each mobile air conditioner, and is specifically preset according to the critical temperature of each mobile air conditioner, which is easy to generate frost.
And step S30, when the temperature of the indoor heat exchanger is lower than the frosting temperature, adjusting the operation parameters of the mobile air conditioner to increase the temperature of the indoor heat exchanger.
In order to improve the frosting condition of the indoor heat exchanger, when the temperature of the indoor heat exchanger is detected to be lower than the frosting temperature, the temperature of the indoor heat exchanger is increased by adjusting the operation parameters of the mobile air conditioner, so that the temperature of the indoor heat exchanger is higher than the frosting temperature, and the frosting time is delayed or the frosting of the indoor heat exchanger is avoided.
The operation parameters of the mobile air conditioner comprise the operation frequency of the compressor, the opening degree of the electronic expansion valve, the working state of the water-fetching motor and the power of the fan. Specifically, the step of adjusting the operation parameters of the mobile air conditioner may include adjusting an opening degree of the electronic expansion valve, for example, increasing the opening degree of the electronic expansion valve, so that a system throttling is reduced, and an inlet end temperature of the indoor heat exchanger is reduced, so as to improve a frosting condition of the indoor heat exchanger. Or, the step of adjusting the operation parameters of the mobile air conditioner may further include turning off a water-pumping motor of the mobile air conditioner to stop heat dissipation of the outdoor heat exchanger, so that the heat exchange effect of the outdoor heat exchanger is poor, the temperature is increased, and heat exchange of the indoor heat exchanger is reduced, thereby improving the frosting condition. Or, the step of adjusting the operation parameters of the mobile air conditioner may further include switching an outdoor fan of the mobile air conditioner to a low gear, reducing air volume on the side of the outdoor heat exchanger, deteriorating heat exchange effect of the outdoor heat exchanger, and increasing temperature, resulting in reduction of heat exchange on the side of the indoor heat exchanger, so as to improve frosting. Or the step of adjusting the operation parameters of the mobile air conditioner can also comprise switching the outdoor fan to a high-speed gear, so that the air volume on the side of the indoor heat exchanger is increased, the temperature on the side of the outdoor heat exchanger is increased, and the frosting condition of the indoor heat exchanger is improved.
In this embodiment, through the frosting condition of the mode control indoor heat exchanger of adjustment electronic expansion valve aperture or opening and close the motor of fetching water or adjust the wind speed of indoor fan or outdoor fan, keep the continuity of complete machine operation, avoid constantly opening and stop the compressor and cause the cold and hot wind to be in turn and bring relatively poor experience effect for the user, promoted user experience, and the continuous operation of compressor has improved system reliability, reduces system and press loss.
In the embodiment of the invention, whether the indoor heat exchanger has a frosting risk is determined by detecting the temperature of the indoor heat exchanger and judging whether the temperature of the indoor heat exchanger is lower than the preset frosting temperature, and when the indoor heat exchanger has the frosting risk, the running parameters of the mobile air conditioner are adjusted to improve the frosting condition of the indoor heat exchanger, so that the frosting condition of the indoor heat exchanger can be improved without stopping the running of a compressor, the heat exchange effect of the mobile air conditioner and the running reliability of the system are ensured, and the user experience is improved.
Referring to fig. 3, fig. 3 is a second embodiment of the method for refrigerating and defrosting a mobile air conditioner, which is provided by the present invention, and based on the embodiment shown in fig. 2, the method for refrigerating and defrosting a mobile air conditioner further includes the following steps:
and step S50, detecting whether the mobile air conditioner operates under the minimum working condition, and executing the step of detecting the temperature of the indoor heat exchanger when the mobile air conditioner operates under the minimum working condition.
The method comprises the steps that when the mobile air conditioner runs and refrigerates under the minimum working condition, frost is most easily generated, so that in order to improve the accuracy of judging the generated frost and prevent the operation parameters of the mobile air conditioner from being started and adjusted under the condition that the frost is not easily generated, before the step of detecting the temperature of an indoor heat exchanger, whether the mobile air conditioner runs and refrigerates under the minimum working condition is judged first, and when the mobile air conditioner does not run and refrigerate under the minimum working condition any more, the indoor heat exchanger is judged to be not easy to frost.
The mode of detecting whether the mobile air conditioner operates under the minimum working condition can be determined by detecting the current operation condition of a compressor of the mobile air conditioner; or a working condition detection element is arranged in the mobile air conditioner, the working condition detection element detects the current running condition of the mobile air conditioner in real time, and when the condition that the mobile air conditioner runs under the minimum working condition is detected, a signal is sent to the controller, so that the controller can control the temperature sensor to detect the temperature of the indoor heat exchanger. It can be understood that the minimum working condition of the mobile air conditioner may also be detected in other manners, which are not described herein.
In this embodiment, when the mobile air conditioner operates and refrigerates under the minimum working condition, the temperature of the indoor heat exchanger is detected again, so that when the temperature of the indoor heat exchanger is lower than the frosting temperature, the operation parameters of the mobile air conditioner are adjusted, and thus, the accuracy of judging the frost generated by the mobile air conditioner can be improved.
Referring to fig. 4, fig. 4 is a third embodiment of a method for refrigerating and defrosting a mobile air conditioner provided by the present invention, and based on the embodiment shown in fig. 2 and/or the embodiment shown in fig. 3, when the temperature of the indoor heat exchanger is lower than the frosting temperature, the operation parameters of the mobile air conditioner are adjusted, and the specific adjusting step includes:
step S310, increasing the opening degree of an electronic expansion valve of the mobile air conditioner; if the opening degree of the electronic expansion valve is increased, the system throttling is reduced, and the temperature at the inlet end of the indoor heat exchanger is reduced, so that the frosting condition of the indoor heat exchanger is improved.
Step S320, after a first time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
and after a first time interval is preset, continuously detecting the temperature of the indoor heat exchanger to judge whether the current temperature of the indoor heat exchanger is easy to frost. Different time can be preset according to the compressor power of each indoor heat exchanger in the preset first time interval, and the preset first time interval is preferably 5 minutes, namely, after the opening degree of an electronic expansion valve of the mobile air conditioner is increased, the temperature of the indoor heat exchanger is detected after 5 minutes, and whether the temperature of the indoor heat exchanger is increased after five minutes of reducing throttling regulation is judged.
Step S330, judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value;
the preset temperature difference threshold is a difference value between a highest temperature at which frost is likely to be generated and a preset frost formation temperature, that is, the frost is likely to be generated when the temperature of the indoor heat exchanger is between the highest temperature and the frost formation temperature, and in the temperature range, the operation parameters of the mobile air conditioner are required to be adjusted. It is understood that, when the temperature of the indoor heat exchanger is within the temperature interval, the opening degree of the electronic expansion valve may be continuously increased, or the electronic expansion valve may be maintained at the current opening degree while step S340 is performed.
And step S340, when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than the preset temperature difference threshold value, closing a water-fetching motor of the mobile air conditioner.
And when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than the preset temperature difference threshold value, the temperature of the indoor heat exchanger is still in the temperature range in which frost is easy to generate, and the operation parameter adjustment needs to be continuously carried out.
It can be understood that, the mode of continuously adjusting the operation parameters of the mobile air conditioner may be a mode of continuously increasing the opening of the electronic expansion valve, but in order to prevent the opening of the electronic expansion valve from being continuously increased and affecting system throttling, it is preferable to adopt a mode of maintaining the current opening of the electronic expansion valve and simultaneously closing the water-fetching motor, and stop radiating the outdoor heat exchanger, so that the heat exchange effect of the outdoor heat exchanger is poor, the temperature is increased, and the heat exchange of the indoor heat exchanger is reduced, thereby improving the frosting condition.
And when the difference between the temperature of the indoor heat exchanger and the frosting temperature is greater than or equal to a preset temperature difference, restoring the electronic expansion valve to an initial opening degree, wherein the initial opening degree is the opening degree before the electronic expansion valve is increased in the step S310.
Step S350, after a second time interval is preset, the temperature of the indoor heat exchanger is continuously detected;
and after a second time interval is preset, continuously detecting the temperature of the indoor heat exchanger to judge whether the current temperature of the indoor heat exchanger is easy to frost. Different times can be preset according to the compressor power of each indoor heat exchanger in the preset second time interval, and the preset second time interval is preferably 5 minutes, namely after the water pumping motor of the mobile air conditioner is turned off, the temperature of the indoor heat exchanger is detected after 5 minutes, and whether the temperature of the indoor heat exchanger is increased after five minutes of adjustment is judged.
Step S360, judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value or not;
and step S370, when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value, switching an outdoor fan of the mobile air conditioner to a low gear.
Similarly, after the preset second time interval, when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than the preset temperature difference threshold value and the temperature of the current indoor heat exchanger is still in the temperature range easy to frost, the operation parameters of the mobile air conditioner are continuously adjusted. If the mode of increasing the opening of the electronic expansion valve is continuously adopted, or the outdoor fan is switched to a low speed gear, the air quantity of the outdoor heat exchanger side is reduced, the heat exchange effect of the outdoor heat exchanger is poor, the temperature is increased, the heat exchange of the indoor heat exchanger side is reduced, and therefore the frosting condition is improved.
When the difference value between the temperature of the indoor heat exchanger and the frosting temperature is larger than or equal to the preset temperature difference value, the indoor heat exchanger operates in a safe state, the electronic expansion valve can be restored to the initial opening degree at the moment, or the current opening degree of the electronic expansion valve is maintained, the water pumping motor is started to cool the outdoor heat exchanger, or the electronic expansion valve is restored to the initial opening degree, and the water pumping motor is started at the same time, so that the refrigeration efficiency of the system is improved.
Step S380, after a third time interval is preset, the temperature of the indoor heat exchanger is continuously detected;
and after a third time interval is preset, continuously detecting the temperature of the indoor heat exchanger to judge whether the current temperature of the indoor heat exchanger is easy to frost. Different times can be preset in the preset third time interval according to the compressor power of each indoor heat exchanger, the preset third time interval is preferably 5 minutes, namely after the outdoor fan is switched to the low gear, the temperature of the indoor heat exchanger is detected after 5 minutes, and whether the temperature of the indoor heat exchanger is increased after five minutes of adjustment is judged.
Step 390, judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value;
and S400, switching an indoor fan of the mobile air conditioner to a high-speed gear when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value.
Similarly, after a preset third time interval, when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value and the temperature of the current indoor heat exchanger is still in a temperature range easy to frost, continuously adjusting the operation parameters of the mobile air conditioner. If the opening degree of the electronic expansion valve is continuously increased or the indoor fan of the mobile air conditioner is switched to a high-speed gear, the air volume on the side of the indoor heat exchanger is increased, so that the temperature on the side of the outdoor heat exchanger is increased, and the frosting condition of the indoor heat exchanger is improved.
When the difference value between the temperature of the indoor heat exchanger and the frosting temperature is larger than or equal to a preset temperature difference value, the indoor heat exchanger operates in a safe state, the electronic expansion valve can be restored to an initial opening degree at the moment, the water pumping motor is kept in a closed state, and the outdoor fan is in a low speed gear; or the current opening degree of the electronic expansion valve is kept, the water pumping motor is started, and the outdoor fan is kept in a low speed gear; or when the electronic expansion valve is recovered to the initial opening degree, the water-fetching motor is started, and the outdoor fan is recovered to a high-speed gear, so that the refrigeration efficiency of the system is improved.
After a fourth time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference value or not;
when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is larger than or equal to the preset temperature difference value, the current temperature of the indoor heat exchanger is judged to be in a safe state to operate (not easy to frost), at the moment, the operation parameters of the mobile air conditioner can be restored to the initial position, namely, the electronic expansion valve is restored to the initial opening degree, the water-fetching motor is started, the outdoor fan is switched to the high-speed gear, and the indoor fan is switched to the low-speed gear.
It can be understood that, in the process of adjusting the operation parameters of the mobile air conditioner, the sequence of increasing the opening of the electronic expansion valve, closing the water-pumping motor, switching the outdoor fan to the low gear and switching the indoor fan to the high gear is not limited to the sequence, and the step of closing the water-pumping motor may be executed first, and then the step of increasing the opening of the electronic expansion valve may be executed; or the step of switching the outdoor fan to the low-speed gear is executed first, and then the step of increasing the opening of the electronic expansion valve is executed, etc., but this embodiment only exemplifies an embodiment of adjusting the operation parameters of the mobile air conditioner, and on the basis of this embodiment, only the schemes of randomly changing the sequence of increasing the opening of the electronic expansion valve, turning off the water-pumping motor, switching the outdoor fan to the low-speed gear, and switching the indoor fan to the high-speed gear are all the scope of protection of the embodiment of the present invention.
In this embodiment, through four kinds of modes of adjusting mobile air conditioner operating parameters such as increase electronic expansion valve opening, close the motor of fetching water, switch outdoor fan to low-speed shelves and switch indoor fan, adjust the temperature of indoor heat exchanger gradually to improve the frosting condition of indoor heat exchanger when low operating mode operation is refrigerated, and adjust mobile air conditioner operating parameters through adopting four kinds of regulation modes, guarantee mobile air conditioner refrigerating system normal operating in the at utmost, when preventing wherein only to adjust one of them operating parameter, it is great to refrigerating system influence.
In addition, in the process of adjusting the operation parameters of the mobile air conditioner, the adjustment is started from the adjustment mode with the minimum influence on the refrigeration system, if the electronic expansion valve is increased, when the temperature of the indoor heat exchanger is still in the temperature range easy to frost, the water-fetching motor is selected to be closed, the outdoor fan is switched to the low-speed gear, and the indoor fan is switched to the high-speed gear, so that the indoor refrigeration effect of the mobile air conditioner is in the optimal state, and the user experience is improved.
Referring to fig. 5, fig. 5 is a fourth embodiment of the method for refrigerating and defrosting a mobile air conditioner according to the present invention, and based on the embodiment shown in fig. 4, after the step of switching the indoor fan of the mobile air conditioner to the high-speed gear, the method further includes:
step S410, after a fourth time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
step S420, judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference value or not;
and step S430, stopping operating the compressor of the mobile air conditioner when the difference between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference.
After the operation parameters in the mobile air conditioner room are adjusted, if the temperature of the indoor heat exchanger is still at the temperature at which frosting is easy to occur, in order to protect the indoor heat exchanger and ensure the operation reliability of the mobile air conditioner, the operation of the compressor is stopped, refrigeration is stopped, and the compressor is restarted after frost on the outer surface of the indoor heat exchanger is dissolved.
The invention also provides a mobile air conditioner, which comprises a processor, a memory and a computer program stored on the memory and capable of running on the processor, wherein the computer program realizes the steps of the method for refrigerating and defrosting the mobile air conditioner as described above when being executed by the processor.
In addition, the invention also provides a computer readable storage medium, wherein the storage medium stores a control program for refrigerating and defrosting of the mobile air conditioner, and the control program for refrigerating and defrosting of the mobile air conditioner realizes the steps of the method for refrigerating and defrosting of the mobile air conditioner when being executed by a processor.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, a home robot, or a network device) to execute the method according to the embodiments of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The method for refrigerating and defrosting of the mobile air conditioner is characterized by comprising the following steps of:
detecting the temperature of an indoor heat exchanger when the mobile air conditioner is in a refrigeration mode;
judging whether the temperature of the indoor heat exchanger is lower than a preset frosting temperature or not;
when the temperature of the indoor heat exchanger is lower than the frosting temperature, increasing the opening degree of an electronic expansion valve of the mobile air conditioner, and continuously detecting the temperature of the indoor heat exchanger after a first time interval is preset;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value or not;
when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than the preset temperature difference threshold value, a water pumping motor of the mobile air conditioner is turned off to increase the temperature of the indoor heat exchanger;
or when the temperature of the indoor heat exchanger is lower than the frosting temperature, the water-fetching motor of the mobile air conditioner is turned off to increase the temperature of the indoor heat exchanger.
2. The method for mobile air conditioning refrigeration defrost of claim 1 further comprising:
detecting whether the mobile air conditioner operates under the minimum working condition;
and when the mobile air conditioner operates under the minimum working condition, executing the step of detecting the temperature of the indoor heat exchanger.
3. The method for refrigerating and defrosting a mobile air conditioner according to claim 1, wherein the step of turning off a water-pumping motor of the mobile air conditioner is followed by the steps of:
after a second time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value or not;
and when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value, switching an outdoor fan of the mobile air conditioner to a low gear.
4. The method for defrosting a mobile air conditioner refrigerant according to claim 3, wherein the step of switching the outdoor fan of the mobile air conditioner to a low gear is followed by further comprising:
after a third time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value or not;
and when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference threshold value, switching an indoor fan of the mobile air conditioner to a high-speed gear.
5. The method for refrigerating and defrosting a mobile air conditioner according to claim 4, wherein the step of switching the indoor fan of the mobile air conditioner to a high gear is followed by further comprising:
after a fourth time interval is preset, continuously detecting the temperature of the indoor heat exchanger;
judging whether the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference value or not;
and when the difference value between the temperature of the indoor heat exchanger and the frosting temperature is smaller than a preset temperature difference value, stopping operating the compressor of the mobile air conditioner.
6. A mobile air conditioner, characterized in that the mobile air conditioner comprises a processor, a memory, and a computer program stored on the memory and operable on the processor, wherein the computer program, when executed by the processor, implements the steps of the method for refrigerating and defrosting of the mobile air conditioner according to any one of claims 1 to 5.
7. A computer-readable storage medium, wherein the storage medium has a mobile air-conditioning refrigeration defrost control program stored thereon, and the mobile air-conditioning refrigeration defrost control program when executed by a processor implements the steps of the method of mobile air-conditioning refrigeration defrost according to any of claims 1-5.
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| CN201810009421.9A CN108168028B (en) | 2018-01-04 | 2018-01-04 | Method for refrigerating and defrosting of mobile air conditioner, mobile air conditioner and storage medium |
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| CN201810009421.9A CN108168028B (en) | 2018-01-04 | 2018-01-04 | Method for refrigerating and defrosting of mobile air conditioner, mobile air conditioner and storage medium |
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| CN108692425B (en) * | 2018-06-01 | 2020-11-27 | 青岛海尔空调器有限总公司 | Defrosting control method for air conditioner |
| CN110873435B (en) * | 2018-08-31 | 2021-12-28 | 青岛海尔空调电子有限公司 | Anti-frosting control method for indoor unit of air conditioner |
| CN109373514B (en) * | 2018-11-19 | 2021-07-23 | 青岛海尔空调电子有限公司 | Defrosting control method for outdoor unit of air conditioner |
| CN110173825A (en) * | 2019-05-31 | 2019-08-27 | 广东美的制冷设备有限公司 | Progress control method, control device, air conditioner and computer readable storage medium |
| CN110454913B (en) * | 2019-08-05 | 2021-09-21 | 广东美的制冷设备有限公司 | Control method and device of air conditioner and air conditioner |
| CN110608519B (en) * | 2019-09-26 | 2022-03-25 | 广东美的制冷设备有限公司 | Air conditioner control method and system and air conditioner |
| CN112577155B (en) * | 2019-09-27 | 2022-12-16 | 广东美的制冷设备有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
| CN110736234A (en) * | 2019-10-11 | 2020-01-31 | 青岛海尔空调器有限总公司 | Air conditioner control method and device and air conditioner |
| CN110686361A (en) * | 2019-10-15 | 2020-01-14 | 广东美的暖通设备有限公司 | Fresh air machine control method, fresh air machine and computer readable storage medium |
| CN114135986B (en) * | 2020-09-04 | 2023-06-30 | 广东美的制冷设备有限公司 | Air conditioner, control method thereof and computer readable storage medium |
| CN112524748B (en) * | 2020-12-09 | 2022-03-15 | 珠海格力电器股份有限公司 | Air conditioner operation control method, device, equipment and storage medium |
| CN112710067A (en) * | 2020-12-29 | 2021-04-27 | 宁波奥克斯电气股份有限公司 | Air conditioner control method and device, air conditioner and readable storage medium |
| CN114353277B (en) * | 2021-11-30 | 2023-04-21 | 珠海格力电器股份有限公司 | Anti-frosting control method and anti-frosting air conditioner |
| CN114322268B (en) * | 2022-01-04 | 2023-05-16 | 广东美的制冷设备有限公司 | Control method, controller, device and storage medium for air conditioning device |
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