CN111237983A - Steam type heat storage defrosting system and method for air conditioner heat exchanger, air conditioner and storage medium - Google Patents
Steam type heat storage defrosting system and method for air conditioner heat exchanger, air conditioner and storage medium Download PDFInfo
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- CN111237983A CN111237983A CN202010050961.9A CN202010050961A CN111237983A CN 111237983 A CN111237983 A CN 111237983A CN 202010050961 A CN202010050961 A CN 202010050961A CN 111237983 A CN111237983 A CN 111237983A
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- 238000010257 thawing Methods 0.000 title claims abstract description 170
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005338 heat storage Methods 0.000 title claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 120
- 238000004378 air conditioning Methods 0.000 claims abstract description 43
- 238000005507 spraying Methods 0.000 claims abstract description 39
- 230000008018 melting Effects 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 13
- 238000009825 accumulation Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 229920006395 saturated elastomer Polymers 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 4
- 238000011010 flushing procedure Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
-
- 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a method, a device and a system for defrosting an air-conditioning heat exchanger by steam heat accumulation, wherein the method comprises the steps of collecting defrosting water to heat the defrosting water to obtain steam serving as a heat-conducting medium, spraying the steam on the surface of a frost layer, and flushing the frost layer by the steam, wherein a large amount of heat energy is released in the process to rapidly melt the frost layer on the air-conditioning heat exchanger, so that the technical problem of long defrosting time in the prior art is solved, and the technical effect of rapidly melting the frost layer on the air-conditioning heat exchanger under the condition of not influencing the temperature in a room is achieved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a steam type heat storage defrosting system and method for an air conditioner heat exchanger, an air conditioner and a storage medium.
Background
At present, when an air conditioner heats in winter, because the outdoor temperature is low, condensed water generated after heat exchange between air on the outdoor side and the low temperature is stopped on fins, because the wind resistance is increased by the condensed water on the fins, the heat exchange is worsened, the evaporation temperature is further reduced, and when the evaporation temperature is lower than 0 ℃, the condensed water gradually frosts, so that the periodic defrosting is needed in the heating process, and the comfort in the heating process is poor.
In the prior art, reverse defrosting or bypass defrosting is performed through a four-way valve, but because the frost layer has low heat conductivity coefficient and is unidirectional heat conduction, the defrosting time is long, and the use comfort is influenced. In recent years, defrosting by spraying hot water to a heat exchanger has occurred, but since air is dried in winter, a small amount of water is collected, and defrosting by spraying hot water to a heat exchanger requires a large amount of water, the amount of water collected in a short time cannot satisfy the defrosting requirement of the method, and a long-time collection prolongs the defrosting time.
Disclosure of Invention
The invention solves the problems that: how to reduce the defrosting time of the air conditioner heat exchanger.
In order to solve the above problems, the present invention provides a steam type heat storage defrosting system for an air conditioner heat exchanger, which is characterized by comprising: a collecting water pump, a temperature control container and an injection device;
the water collecting pump is used for collecting defrosting water generated by melting of a frost layer of the air-conditioning heat exchanger;
the temperature control container is connected with the water collecting pump and is used for converting the defrosting water into steam;
the spraying device is connected with the temperature control container and is used for spraying the steam to the surface of the frost layer of the air conditioner heat exchanger.
According to the invention, the collecting water pump is used for collecting defrosting water generated by melting of the frost layer of the air-conditioning heat exchanger, the defrosting water is heated by the temperature control container to generate steam, the steam is used as a carrier of heat energy, so that a large amount of heat energy can still be transferred under the condition of only a small amount of water, and the steam is sprayed out from the surface of the frost layer of the air-conditioning heat exchanger, so that defrosting operation is carried out, a large amount of heat energy is conveyed to the frost layer, the heat energy loss of the steam in the process of approaching the frost layer is reduced, the technical problem of overlong defrosting time of the air-conditioning heat exchanger in the prior art is solved, and the defrosting time of the air-conditioning heat.
Preferably, the air-conditioning heat exchanger steam type heat storage defrosting system further comprises a pipeline and a diaphragm pump;
the temperature control container is connected with the spraying device through the pipeline;
the diaphragm pump is mounted to the pipe for adjusting the pressure of the steam in the pipe.
The invention can adjust the steam pressure in the pipeline by arranging the pipeline connected with the temperature control container and the injection device and the diaphragm pump arranged in the pipeline, when the steam is injected to the surface of the frost layer of the air-conditioning heat exchanger at a certain pressure, the steam scours the frost layer to improve the defrosting efficiency, and can reduce the heat energy loss of the distance from the steam to the frost layer, improve the defrosting efficiency and further reduce the defrosting time.
Preferably, the air-conditioning heat exchanger steam type heat storage defrosting system further comprises a defrosting water collecting container;
the defrosting water collecting container is arranged below the air-conditioning heat exchanger and connected with the water collecting pump and used for receiving defrosting water generated by melting of a frost layer of the air-conditioning heat exchanger.
According to the invention, the defrosting water collecting container is arranged, so that the collecting efficiency of the defrosting water is improved, the collecting time of the defrosting water is reduced, and the defrosting time of the air-conditioning heat exchanger is reduced from the perspective of reducing the collecting time of the defrosting water.
The invention also provides a steam type heat storage defrosting method of an air conditioner heat exchanger, which is applied to the steam type heat storage defrosting system of the air conditioner heat exchanger, and the steam type heat storage defrosting method of the air conditioner heat exchanger comprises the following steps:
controlling a water collecting pump to be opened so as to convey the defrosting water of the air-conditioning heat exchanger into the temperature control container;
when a preset condition is met, controlling the temperature control container to heat the defrosting water to obtain steam;
and controlling the spraying device to spray the steam to the surface of the frost layer of the air-conditioning heat exchanger.
According to the invention, the operation of the collecting water pump is controlled, the defrosting water is conveyed into the temperature control container, and the defrosting water is used as a carrier of heat energy, however, as the defrosting water is collected slowly in the initial stage, when the defrosting water is only slightly collected, the defrosting water is heated to a steam state, the heat energy density conveyed by unit water volume is improved, and more heat energy is sprayed to the surface of a frost layer by the spraying device so as to reduce the defrosting time.
Preferably, the meeting of the preset condition includes:
when the air conditioner operates in a heating mode, acquiring the outdoor environment temperature;
when the environment temperature is lower than a preset environment temperature, acquiring the temperature of an outer disc;
when the temperature of the outer disc is greater than the preset temperature of the outer disc, acquiring the temperature change condition of the outer disc;
and determining that the temperature change condition of the outer disc in the preset time meets a preset threshold value.
The method comprises the steps of preliminarily judging whether the outdoor environment is frosted or not by setting the preset environment temperature, further judging whether the outdoor environment is frosted or possibly frosted under the condition that the frosting is possible or not by setting the preset outer disc temperature, and finally judging whether the outdoor environment is frosted or not by setting the preset time and obtaining the change condition of the outer disc temperature within the preset time to judge whether the outdoor environment is frosted or not under the condition that the frosting is possible.
Preferably, the air conditioner heat exchanger steam type heat storage defrosting method further includes: controlling the defrosting water collecting container to heat the container.
According to the defrosting method and the defrosting device, the defrosting water collecting container is heated, so that a frost layer in the defrosting water collecting container is melted, defrosting water is obtained, and after the defrosting water is continuously heated to generate steam, the steam brings heat energy to the air-conditioning heat exchanger above the defrosting water collecting container to heat the defrosting water due to the principle that hot air rises, so that the frost layer of the air-conditioning heat exchanger is melted, and the defrosting time of the air-conditioning heat exchanger is further shortened.
Preferably, the control injection device includes: when the steam is saturated steam, controlling a diaphragm pump to adjust the saturated steam in the pipeline to a first preset pressure; and when the steam is superheated steam, controlling the diaphragm pump to adjust the superheated steam in the pipeline to a second preset pressure, wherein the second preset pressure is greater than the first preset pressure.
According to the invention, the corresponding preset pressure is adjusted according to the type of the steam in the pipeline, so that the speed of the steam when the steam is sprayed by the spraying device is further improved, the washing effect on the frost layer is better, the heat energy loss of the steam before reaching the frost layer is reduced, and the defrosting time of the air-conditioning heat exchanger is reduced.
The third objective of the present invention is to provide a steam type heat storage defrosting device for an air conditioner heat exchanger, so as to reduce the defrosting time of the air conditioner heat exchanger.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides an air conditioner heat exchanger steam type heat accumulation defroster, air conditioner heat exchanger steam type heat accumulation defroster includes:
the collecting module is used for controlling a collecting water pump to be opened so as to convey the defrosting water of the air conditioner heat exchanger into the temperature control container;
the heating module is used for controlling the temperature control container to heat the defrosting water to obtain steam when a preset condition is met;
and the spraying module is used for controlling the spraying device to spray the steam to the surface of the frost layer of the air-conditioning heat exchanger.
A fourth object of the present invention is to provide another air conditioner to reduce the time for defrosting the heat exchanger of the air conditioner.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an air conditioner comprising a computer readable storage medium storing a computer program and a processor, wherein when the computer program is read and executed by the processor, the method for defrosting the heat exchanger by the vapor heat storage of the air conditioner is realized.
A fifth object of the present invention is to provide another storage medium, wherein the computer-readable storage medium stores a computer program, which when read and executed by a processor, implements the vapor thermal storage defrosting method of the air conditioner heat exchanger as described above.
Compared with the prior art, the air conditioner heat exchanger steam type heat storage defrosting device, the air conditioner and the storage medium have the same advantages as the air conditioner heat exchanger steam type heat storage defrosting method, and are not repeated herein.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of a steam type heat storage defrosting system of an air conditioner heat exchanger according to the present invention;
FIG. 2 is a schematic structural diagram of another embodiment of a method for defrosting a heat exchanger of an air conditioner by means of steam heat storage according to the present invention;
FIG. 3 is a schematic flow chart of another embodiment of a method for defrosting a heat exchanger of an air conditioner by means of steam heat storage according to the present invention;
FIG. 4 is a schematic flow chart illustrating a method for defrosting a heat exchanger of an air conditioner by means of steam heat storage according to another embodiment of the present invention;
fig. 5 is a schematic flow chart of another embodiment of the method for defrosting the air conditioner heat exchanger by using the steam type heat storage according to the invention.
Description of reference numerals:
1-collecting water pump, 2-temperature control container, 3-spraying device, 4-air-conditioning heat exchanger, 5-pipeline, 6-diaphragm pump and 7-defrosting water collecting container.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Furthermore, the following description, if any, of "first," "second," etc. is used for descriptive purposes only and not for purposes of indicating or implying relative importance or implicitly indicating the number of technical features indicated. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In order to solve the technical problem that the defrosting time of the air-conditioning heat exchanger is too long, the invention provides a steam type heat storage defrosting system and method for the air-conditioning heat exchanger, an air conditioner and a storage medium.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
With reference to fig. 1, an embodiment of the present invention provides a steam-type heat storage defrosting system for an air conditioner heat exchanger, including a water collecting pump 1, a temperature control container 2, and an injection device 3;
the collecting water pump 1 is used for collecting defrosting water generated by melting of a frost layer of the air-conditioning heat exchanger 4;
the temperature control container 2 is connected with the water collecting pump 1 and is used for converting the defrosting water into steam;
the spraying device 3 is connected with the temperature-controlled container 2 and is used for spraying the steam to the surface of the frost layer of the air-conditioning heat exchanger 4.
It is easily understood that collecting and heating the defrosting water all need certain time and only when collecting certain defrosting water, can begin to carry out subsequent defrosting operation, however when the heat exchanger temperature is lower, the defrosting water is collected difficultly, use steam to carry out the heat accumulation defrosting as the carrier of heat energy and compare and directly use water to carry out the heat accumulation defrosting, greatly reduced the demand of water, so when the defrosting water is collected difficultly, can reduce the total time of collecting and heating the defrosting water through the mode that increases heating time.
It should be noted that the defrosting water flowing naturally is easy to freeze in a low temperature environment, so that the speed of collecting the defrosting water is reduced, and the defrosting water is collected by the collecting water pump, so that the speed of collecting the defrosting water can be increased, and the defrosting time of the air-conditioning heat exchanger 4 is reduced.
It is worth emphasizing that, in this embodiment, the injection port of the injection device is usually away from the frost layer by a certain distance, so that the time from the steam to the frost layer can be reduced by releasing the steam in an injection manner, the influence of the steam on the environment is also avoided, the position where the steam arrives is more accurate and controllable, and the air is flushed away from the frost layer by injecting, which is beneficial to melting the frost layer, so as to further reduce the defrosting time of the air-conditioning heat exchanger 4.
It is easy to understand that the spraying device 3 can be disposed at any position of the air conditioner heat exchanger 4, when the spraying device 3 is located above the air conditioner heat exchanger 4, the water generated after the steam liquefaction can bring the heat energy to the part below the heat exchanger 4 by flowing, and when the spraying device 3 is disposed at the middle position of the air conditioner heat exchanger 4, in addition to melting the frost layer of the air conditioner heat exchanger 4 below the spraying device 3 by flowing, the hot steam can rise to melt the frost layer of the air conditioner heat exchanger 4 above the spraying device 3 by means of the rising of hot air, and when the spraying device 3 is disposed below the air conditioner heat exchanger 4, the frost layer of the air conditioner heat exchanger 4 above the spraying device 3 can be melted by the principle of the rising of hot air.
This embodiment is through using steam as the carrier of heat energy, the water yield that the defrosting needs has been reduced, the time of collecting defrosting water has been reduced, the time of collecting with heating defrosting water has been reduced simultaneously, release steam through the mode with spraying simultaneously, the purpose of having reached and having washed away the frost layer, the degree of accuracy and the controllable degree of the position that steam arrived have been improved, energy loss when the frost layer surface is arrived to steam has been reduced, the time that the defrosting needs has further been reduced, the technological effect of defrosting time that has reached and has reduced air conditioner heat exchanger, user experience has been improved.
Referring to fig. 2, the steam type heat storage defrosting system of the air conditioner heat exchanger further comprises a pipeline 5 and a diaphragm pump 6;
the temperature control container 2 is connected with the spraying device 3 through the pipeline 5;
the diaphragm pump 6 is installed in the pipe 5, and is used for adjusting the pressure of the steam in the pipe 5.
It is emphasized that the pipe 5 and the membrane pump 6 are capable of dynamically adjusting the air pressure in the pipe, the membrane pump 6 also serving to convey the steam into the pipe 5. The steam generated in the temperature control container is conveyed into the pipeline 5 by the diaphragm pump 6, and in order to prevent the steam from liquefying, the pressure in the pipeline needs to be adjusted to improve the spraying effect of the spraying device 3 as much as possible, so that the loss of heat energy before reaching the surface of the frost layer is reduced, the flushing effect of the steam on the frost layer is improved, and the defrosting time of the air-conditioning heat exchanger 4 is shortened.
Specifically, the air-conditioning heat exchanger steam type heat storage defrosting system further comprises a defrosting water collecting container 7;
the defrosting water collecting container 7 is arranged below the air-conditioning heat exchanger 4, is connected with the collecting water pump 1, and is used for receiving defrosting water generated by melting of a frost layer of the air-conditioning heat exchanger 4.
This embodiment has perfected technical scheme through increasing pipeline 5 and diaphragm pump 6, make steam can be transported by fast, and through the pressure in the 6 adjustment pipelines of diaphragm pump 5, further improve injection apparatus 3's injection effect, reduce the loss of heat energy before arriving the frost layer surface, and promote the washing effect of steam to the frost layer, and collect container 7 auxiliary heating air conditioner heat exchanger 4 and supplementary collection defrosting water through defrosting, reach the technological effect that reduces air conditioner heat exchanger's defrosting time with this.
The present application further proposes a method for defrosting a heat exchanger of an air conditioner by means of steam heat storage, which is applied to the system for defrosting a heat exchanger of an air conditioner by means of steam heat storage as described above, and includes:
s10, when a preset condition is met, controlling the collecting water pump 1 to be turned on so as to convey the defrosting water of the air conditioner heat exchanger 4 to the temperature control container 2;
it is easy to understand that, the collecting water pump 1 is connected with the temperature control container 4 through a pipeline, and when defrosting is started, because a frost layer does not start to melt, the defrosting water is little, and the collecting is not easy, so the collecting water pump 1 can collect the defrosting water for a long time.
S20, controlling the temperature control container 2 to heat the defrosting water to obtain steam;
it should be noted that, because the time for collecting the defrosting water is longer when the defrosting is started, when only a small amount of defrosting water is collected, more heat energy can be transported through a small amount of defrosting water by heating the defrosting water to steam, although the heating time is prolonged, the heating power can be improved by increasing the heating power, and even if the heating time is prolonged, under the condition of proper regulation and control, the total defrosting time can still be reduced due to the greatly reduced collecting time of the defrosting water.
And S30, controlling the spraying device 3 to spray the steam to the surface of the frost layer of the air conditioner heat exchanger 4.
It is worth emphasizing that the spraying device 3 is usually at a distance from the frost layer, and the steam is released by spraying, so that the time from the steam to the frost layer is reduced, the steam is prevented from being influenced by the environment, the position where the steam arrives is more accurate and controllable, the heat energy loss of the steam before the steam arrives at the frost layer is reduced, the steam released by spraying can also have a certain scouring effect on the frost layer, and the time for melting the frost layer is reduced.
This embodiment is through using steam as the carrier of heat energy, the water yield that the defrosting needs has been reduced, the time of collecting defrosting water has been reduced, release steam through the mode that uses to spray simultaneously, make steam erode the frost layer, and improved the accurate degree and the controllable degree of the position that steam reachd, the heat energy loss before steam reachd the frost layer has been reduced, the efficiency of melting on frost layer has been improved, the time that the defrosting needs has further been reduced, the technological effect of the defrosting time that reduces air conditioner heat exchanger has been reached, user experience has been improved.
Referring to fig. 4, the satisfying of the preset condition includes:
s11, when the air conditioner operates in a heating mode, acquiring the outdoor environment temperature;
it is easy to understand that, only in winter and when the air conditioner is in the heating mode, defrosting is needed, so the operation mode of the air conditioner is firstly determined, and when the air conditioner is operated in the heating mode, whether the heat exchanger 4 of the air conditioner is frosted needs to be detected, so the ambient temperature is detected at this time.
S12, when the environment temperature is lower than the preset environment temperature, acquiring the temperature of the outer disc;
it should be noted that, in this embodiment, the preset ambient temperature is 10 degrees celsius, and when the outdoor temperature is less than 10 degrees celsius, frosting may occur, but it still cannot be determined, and in order to reduce unnecessary defrosting time, the temperature of the external tray needs to be detected.
S13, when the temperature of the outer disc is higher than the preset temperature of the outer disc, acquiring the temperature change condition of the outer disc;
it is worth emphasizing that, in this embodiment, the preset outer tray temperature is 3 degrees celsius, when the outer tray temperature is less than 3 degrees celsius, the frosting will be defaulted, and when the outer tray temperature is greater than 3 degrees celsius, whether frosting is generated cannot be accurately judged through simply detecting the outer tray temperature, so that when the outer tray temperature is greater than 3 degrees celsius, the change condition of the outer tray temperature is detected.
And S14, determining that the temperature change condition of the outer disc in the preset time meets a preset threshold value.
It should be noted that, in this embodiment, the one-stage change of the outer disc temperature (f (outer disc temperature) — (second time outer disc temperature — first time outer disc temperature)/1) is used for 10 minutes, and the one-stage change is obtained as the preset threshold, and when the one-stage temperature changes are all less than 0, the heat exchanger is defaulted to frost, and the defrosting mode is entered.
Whether this embodiment has the detection mechanism of frost through perfecting air conditioner heat exchanger, has reduced the time that the air conditioner got into the mode of changing frost, also makes the frost layer melt the back simultaneously, and the air conditioner can withdraw from the mode of changing frost rapidly, has perfected technical scheme, has reduced the total length of air conditioner in the mode of changing frost for the air conditioner can be faster get into the mode of heating, has improved user experience.
The air conditioner heat exchanger steam type heat storage defrosting method further comprises the following steps:
the defrosting water collection container 7 is controlled to heat the container.
It is easy to understand that after the defrosting water collecting container 7 is controlled to heat the container, the frost layer in the defrosting water collecting container will melt, so that a part of defrosting water is collected, and through continuous heating, the part of defrosting water can become steam, because of the principle that hot air rises, the steam rises and contacts with the air-conditioning heat exchanger 4, so that the frost layer of the air-conditioning heat exchanger 4 melts, and the melted defrosting water is collected by the defrosting water collecting container 7 again and is conveyed to the temperature control container 2 through the water collecting pump 1.
Referring to fig. 5, the control injection device 3 includes:
when the steam is saturated steam, controlling the diaphragm pump 6 to adjust the saturated steam in the pipeline 5 to a first preset pressure;
it should be noted that, because the temperature of the saturated steam is lower than that of the superheated steam, the saturated steam is liquefied under the pressure of the intersection, when the steam is the saturated steam, only the first preset pressure is used to pressurize the steam in the pipeline 5, and certainly, after the saturated steam is pressurized, a part of the steam is liquefied, and a small amount of liquefied steam does not affect the implementation of the scheme, and as the steam is gradually released, the pressure is reduced, the liquefied steam is gradually gasified, and the same effect is achieved.
And when the steam is superheated steam, controlling the diaphragm pump 6 to adjust the superheated steam in the pipeline 5 to a second preset pressure, wherein the second preset pressure is greater than the first preset pressure.
It is worth emphasizing that the second preset pressure is greater than the first preset pressure, because superheated steam is higher than saturated steam in temperature and can be liquefied under higher pressure, when the pressure is higher, the flushing of a frost layer is more obvious, and the defrosting effect is better, so when the steam is superheated steam, the second preset pressure is used for pressurizing the steam in the pipeline 5.
According to the embodiment, the release pressure of the steam is flexibly adjusted according to the type of the steam, the defrosting effect of the steam during release is further improved, the technical scheme is perfected, the total defrosting time is further reduced, and the technical effect of reducing the defrosting time of the air-conditioning heat exchanger is achieved.
The invention also provides a steam type heat storage defrosting device of the air conditioner heat exchanger, which comprises
The collecting module is used for controlling the collecting water pump 1 to be opened so as to convey the defrosting water of the air conditioner heat exchanger 4 to the temperature control container 2;
the heating module is used for controlling the temperature control container 2 to heat the defrosting water to obtain steam when a preset condition is met;
and the spraying module is used for controlling the spraying device 3 to spray the steam to the surface of the frost layer of the air conditioner heat exchanger 4.
In this embodiment, the defrosting water is collected through the collection module, and the defrosting water is heated through the heating module to obtain steam, so that a large amount of heat energy can be still conveyed under the condition of less defrosting water, the time for collecting the defrosting water is reduced, the steam is sprayed to the surface of a frost layer through the spraying module, the defrosting speed is improved, the heat energy loss of the steam before reaching the surface of the frost layer is reduced, the defrosting time of the air-conditioning heat exchanger is shortened, and the technical effect of quickly melting the frost layer on the air-conditioning heat exchanger is achieved.
The invention also provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and when the computer program is read and executed by the processor, the steam type heat storage defrosting method of the air conditioner heat exchanger is realized.
The invention also provides a computer readable storage medium, which stores a computer program, and when the computer program is read and executed by a processor, the method for defrosting the air conditioner heat exchanger by the vapor heat storage is realized.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides an air conditioner heat exchanger steam type heat accumulation defrost system which characterized in that includes: a collecting water pump (1), a temperature control container (2) and a spraying device (3);
the collecting water pump (1) is used for collecting defrosting water generated by melting of a frost layer of the air-conditioning heat exchanger (4);
the temperature control container (2) is connected with the water collecting pump (1) and is used for converting the defrosting water into steam;
the spraying device (3) is connected with the temperature control container (2) and is used for spraying the steam to the surface of the frost layer of the air-conditioning heat exchanger (4).
2. The air conditioner heat exchanger steam heat storage defrosting system of claim 1, further comprising a pipeline (5) and a diaphragm pump (6);
the temperature control container (2) is connected with the spraying device (3) through the pipeline (5);
the diaphragm pump (6) is mounted to the pipe (5) for adjusting the pressure of the steam in the pipe (5).
3. The air conditioner heat exchanger steam heat storage defrosting system of claim 1 further comprising a defrosting water collecting vessel (7);
the defrosting water collecting container (7) is arranged below the air-conditioning heat exchanger (4) and connected with the collecting water pump (1) and is used for receiving defrosting water generated by melting of a frost layer of the air-conditioning heat exchanger (4).
4. A method for defrosting a heat exchanger of an air conditioner by means of steam heat storage, which is applied to the heat exchanger of the air conditioner according to any one of claims 1 to 3, and comprises the following steps:
when a preset condition is met, controlling the water collecting pump (1) to be opened so as to convey the defrosting water of the air conditioner heat exchanger (4) to the temperature control container (2);
controlling the temperature control container (2) to heat the defrosting water to obtain steam;
controlling the spraying device (3) to spray steam to the surface of the frost layer of the air-conditioning heat exchanger (4).
5. The air conditioner heat exchanger steam type heat storage defrosting method according to claim 4, wherein the meeting of the preset condition comprises:
when the air conditioner operates in a heating mode, acquiring the outdoor environment temperature;
when the environment temperature is lower than a preset environment temperature, acquiring the temperature of an outer disc;
when the temperature of the outer disc is greater than the preset temperature of the outer disc, acquiring the temperature change condition of the outer disc;
and determining that the temperature change condition of the outer disc in the preset time meets a preset threshold value.
6. The air conditioner heat exchanger steam type heat storage defrosting method according to claim 4, characterized by further comprising:
controlling the defrosting water collecting container (7) to heat the container.
7. The evaporative heat storage defrosting method of an air conditioner heat exchanger according to claim 4, wherein the controlling the injection device (3) comprises:
when the steam is saturated steam, controlling a diaphragm pump (6) to adjust the saturated steam in the pipeline (5) to a first preset pressure;
and when the steam is superheated steam, controlling the diaphragm pump (6) to adjust the superheated steam in the pipeline (5) to a second preset pressure, wherein the second preset pressure is greater than the first preset pressure.
8. The utility model provides an air conditioner heat exchanger steam type heat accumulation defroster which characterized in that, air conditioner heat exchanger steam type heat accumulation defroster includes:
the collecting module is used for controlling the collecting water pump (1) to be opened so as to convey the defrosting water of the air conditioner heat exchanger (4) to the temperature control container (2);
the heating module is used for controlling the temperature control container (2) to heat the defrosting water to obtain steam when a preset condition is met;
and the spraying module is used for controlling the spraying device (3) to spray the steam to the surface of the frost layer of the air-conditioning heat exchanger (4).
9. An air conditioner comprising a computer readable storage medium storing a computer program and a processor, wherein the computer program when read and executed by the processor implements the air conditioner heat exchanger evaporative heat storage defrosting method of any one of claims 4 to 7.
10. A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program which, when read and executed by a processor, implements the air conditioner heat exchanger evaporative heat storage defrosting method of any one of claims 4 to 7.
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| CN202010050961.9A CN111237983A (en) | 2020-01-17 | 2020-01-17 | Steam type heat storage defrosting system and method for air conditioner heat exchanger, air conditioner and storage medium |
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| CN202010050961.9A CN111237983A (en) | 2020-01-17 | 2020-01-17 | Steam type heat storage defrosting system and method for air conditioner heat exchanger, air conditioner and storage medium |
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