CN110470001B - Control method for defrosting of air conditioner without stopping and air conditioner - Google Patents
Control method for defrosting of air conditioner without stopping and air conditioner Download PDFInfo
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- CN110470001B CN110470001B CN201910693884.6A CN201910693884A CN110470001B CN 110470001 B CN110470001 B CN 110470001B CN 201910693884 A CN201910693884 A CN 201910693884A CN 110470001 B CN110470001 B CN 110470001B
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- 238000010257 thawing Methods 0.000 title claims abstract description 200
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000010438 heat treatment Methods 0.000 claims abstract description 84
- 230000003213 activating effect Effects 0.000 claims abstract description 7
- 230000001186 cumulative effect Effects 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 7
- 101000572983 Rattus norvegicus POU domain, class 3, transcription factor 1 Proteins 0.000 description 24
- 101000640206 Tityus serrulatus Alpha-mammal toxin Ts2 Proteins 0.000 description 20
- 230000008569 process Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/31—Low ambient temperatures
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Human Computer Interaction (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, and discloses a control method for defrosting of an air conditioner without shutdown and the air conditioner, wherein the control method comprises the following steps: step S1, setting a first defrost temperature reference value, a second defrost temperature reference value, and a third defrost temperature reference value of the defrost temperature sensor, respectively; step S2, setting a first time reference value, a second time reference value, and a third time reference value for continuous cumulative operation of the outdoor unit, respectively; step S3, confirming that the preset temperature of the defrosting temperature sensor is set to the first defrosting temperature reference value within the range from the first time reference value to the second time reference value; and step S4, confirming that the actual temperature of the defrosting temperature sensor is less than the first defrosting temperature reference value within the range from the first time reference value to the second time reference value, and activating the heating member to heat and defrost the inner coil of the outdoor unit. The control method has the advantages that the operation mode of the air conditioner does not need to be switched, and defrosting can be carried out when the air conditioner is in a heating mode.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method for defrosting of an air conditioner without stopping and the air conditioner.
Background
At present, the air conditioner is at the in-process of heating, the cross valve is in the state of opening, outdoor heat exchanger is the evaporimeter, indoor heat exchanger is the condenser, because the temperature of evaporimeter is lower, and in addition outdoor ambient temperature is the operating mode under zero, therefore, the phenomenon that frosting can appear in vapor or liquid water around the existence outdoor heat exchanger, after frosting, if frosting seriously can not effectively defrost in time, will seriously influence the heat transfer performance of off-premises station, promptly, the unable normal heat transfer of off-premises station, finally lead to the heating ability decline of indoor set, thereby influence the effect of heating of air conditioner, the user can not experience in indoor hot-blastly, reduce user's experience.
In the existing defrosting control method, after frosting of the outdoor heat exchanger is judged, the air conditioner is switched from a current heating mode to a cooling mode, and a refrigerant flowing through the outdoor heat exchanger releases heat and defrosts.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a control method for defrosting of an air conditioner without stopping and the air conditioner, and the control method is used for solving the technical problems that the existing defrosting method of the air conditioner in the prior art is often to switch the air conditioner from a heating mode to a cooling mode during defrosting, so that a refrigerant flowing through an outdoor heat exchanger releases heat and defrosts, and at the moment, an indoor unit cannot heat and is equivalent to be in a stopping mode, so that the comfort level and the experience feeling of a user in a room can be reduced.
(II) technical scheme
In order to solve the above technical problems, according to a first aspect of the present invention, there is provided a control method for defrosting an air conditioner without stopping the air conditioner, the air conditioner including an indoor unit and an outdoor unit connected to the indoor unit, an inner coil and a heating member for heating the inner coil being respectively disposed inside the outdoor unit, and a defrosting temperature sensor being disposed on the inner coil, the method including: step S1, setting a first defrost temperature reference value, a second defrost temperature reference value, and a third defrost temperature reference value of the defrost temperature sensor, respectively; step S2, setting a first time reference value, a second time reference value, and a third time reference value for continuous cumulative operation of the outdoor unit, respectively; step S3, confirming that the preset temperature of the defrosting temperature sensor is set to a first defrosting temperature reference value within a range from a first time reference value to a second time reference value; step S4, confirming that the actual temperature of the defrosting temperature sensor is less than the first defrosting temperature reference value within the range from the first time reference value to the second time reference value, and activating the heating element to heat and defrost the inner coil of the outdoor unit.
Wherein the method further comprises: confirming that the preset temperature of the defrosting temperature sensor is set as the second defrosting temperature reference value within the range from the second time reference value to the third time reference value.
Wherein the method further comprises: setting the preset temperature of the defrost temperature sensor to a third defrost temperature reference value after confirming the third time reference value.
Wherein, after step S4, the method further comprises: and step S5, confirming that the actual temperature of the defrosting temperature sensor is less than the second defrosting temperature reference value within the range from the second time reference value to the third time reference value, and activating the heating member to heat and defrost the inner coil of the outdoor unit.
Wherein, after step S5, the method further comprises: and step S6, after confirming that the actual temperature of the defrosting temperature sensor is less than the third defrosting temperature reference value after the third time reference value, activating the heating component to heat and defrost the inner coil of the outdoor unit.
Wherein, after step S4, step S5, or step S6, the method further comprises: and confirming that the actual temperature of the defrosting temperature sensor is greater than the defrosting ending preset temperature, and stopping the work of the heating part, wherein the defrosting ending preset temperature is greater than the third defrosting temperature reference value.
Wherein, after step S4, step S5, or step S6, the method further comprises: and confirming that the actual defrosting accumulated running time of the defrosting temperature sensor is greater than the defrosting ending preset time, and stopping the heating component, wherein the defrosting ending preset time is greater than the third time reference value.
Wherein the method further comprises: and after the time that the actual temperature of the defrosting temperature sensor is smaller than the first defrosting temperature reference value, the second defrosting temperature reference value or the third defrosting temperature reference value is confirmed to be a first preset time, the heating component is started again.
Wherein the method further comprises: and when the heating component is started, the defrosting temperature sensor is subjected to temperature compensation.
Wherein the method further comprises: and after the defrosting temperature sensor is subjected to temperature compensation, after the actual temperature of the defrosting temperature sensor is confirmed to be less than the first defrosting temperature reference value, the second defrosting temperature reference value or the third defrosting temperature reference value for a second preset time, the air conditioner is switched from the current heating mode to the cooling mode, wherein the second preset time is greater than the first preset time.
According to the second aspect of the application, still provide an air conditioner, including indoor set and with the off-premises station that the indoor set is connected the inside of off-premises station is equipped with interior coil pipe respectively and is used for giving the heating element that interior coil pipe carries out the heating be equipped with defrosting temperature sensor on the interior coil pipe, the air conditioner still includes the treater, the treater is used for carrying out the aforesaid the control method that the air conditioner does not shut down the defrosting.
According to the third aspect of the present application, there is also provided a computer readable storage medium having a control program of an air conditioner stored thereon, the control program of the air conditioner, when executed by a processor, implementing the above-mentioned control method for defrosting without stopping the air conditioner.
(III) advantageous effects
Compared with the prior art, the control method for defrosting of the air conditioner without stopping the machine has the following advantages that:
when the air conditioner is in the heating mode, once the inner coil of the outdoor unit is frosted, in order to ensure that the outdoor unit can perform normal heat exchange, the inner coil of the outdoor unit needs to be defrosted, and in order to ensure that the air conditioner can perform defrosting while heating, the heating component needs to be started to heat and defrost the inner coil of the outdoor unit by confirming that the actual temperature Tcs of the defrosting temperature sensor is smaller than the first defrosting temperature reference value Tst1 in the range from the first time reference value Tst1 to the second time reference value Tst 2. Therefore, the control method for defrosting of the air conditioner without stopping the machine can achieve the purpose of better defrosting the inner coil of the outdoor unit on the one hand, and also effectively avoid reversing of the four-way valve and switching of the operation modes of the air conditioner, so that the air conditioner can still keep the original heating mode to continue to operate in the defrosting process, and therefore the indoor unit can still continuously blow hot air indoors, so that the experience of a user is effectively guaranteed, the reduction of the room temperature caused by indoor heat-free air is avoided, and the comfort level of the user is reduced.
Drawings
FIG. 1 is a flowchart illustrating the steps of a method for controlling an air conditioner to defrost without stopping the air conditioner according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a defrost logic of an air conditioner according to an embodiment of the present application.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The specific structure of the air conditioner mentioned in the control method for defrosting without stopping the air conditioner is as follows: the air conditioner includes an indoor unit (not shown) and an outdoor unit (not shown) connected to the indoor unit, an inner coil (not shown) and a heating member (not shown) for heating the inner coil are respectively disposed inside the outdoor unit, and a defrosting temperature sensor (not shown) is disposed on the inner coil. Wherein, when the phenomenon of frosting takes place for the interior coil pipe of off-premises station, for the normal heat transfer of ensureing the off-premises station, simultaneously, avoid the air conditioner to switch the operational mode, promptly, avoid the air conditioner to switch into the refrigeration mode by current mode of heating, then can be through add the heater block in the inside of off-premises station, through starting this heater block, alright transmit the heat with the interior coil pipe to the off-premises station to reach the purpose of defrosting for the interior coil pipe of off-premises station.
It should be noted that the defrosting temperature sensor is used for detecting the temperature of the inner coil of the outdoor unit in real time.
The defrosting temperature sensor is preferably disposed at an outlet of an inner coil of the outdoor unit, and the heating member is preferably disposed on or around the inner coil of the outdoor unit or at an air inlet of the outdoor unit.
As shown in fig. 1 and 2, it is schematically shown that the control method for defrosting the air conditioner without stopping the machine includes the following steps:
in step S1, the first, second, and third defrost temperature reference values Tst1, Tst2, and Tst3 of the defrost temperature sensor are set, respectively.
In step S2, the first time reference value tst1, the second time reference value tst2, and the third time reference value tst3 for the continuous cumulative operation of the outdoor unit are set, respectively.
In step S3, it is confirmed that the preset temperature of the defrosting temperature sensor is set to the first defrosting temperature reference value Tst1 within the range of the first time reference value Tst1 to the second time reference value Tst 2.
In step S4, it is confirmed that the actual temperature Tcs of the defrosting temperature sensor is less than the first defrosting temperature reference value Tst1 within the range from the first time reference value Tst1 to the second time reference value Tst2, and the heating member is activated to heat-defrost the inner coil of the outdoor unit. Specifically, when the air conditioner is in the heating mode, once the inner coil of the outdoor unit is frosted, in order to ensure that the outdoor unit can perform normal heat exchange, the inner coil of the outdoor unit needs to be defrosted, and in order to ensure that the air conditioner can perform defrosting while heating, the heating element needs to be activated to heat and defrost the inner coil of the outdoor unit by confirming that the actual temperature Tcs of the defrosting temperature sensor is less than the first defrosting temperature reference value Tst1 within the range from the first time reference value Tst1 to the second time reference value Tst 2. Therefore, the control method for defrosting of the air conditioner without stopping the machine can achieve the purpose of better defrosting the inner coil of the outdoor unit on the one hand, and also effectively avoid reversing of the four-way valve and switching of the operation modes of the air conditioner, so that the air conditioner can still keep the original heating mode to continue to operate in the defrosting process, and therefore the indoor unit can still continuously blow hot air indoors, so that the experience of a user is effectively guaranteed, the reduction of the room temperature caused by indoor heat-free air is avoided, and the comfort level of the user is reduced.
It should be noted that the first defrosting temperature reference Tst1 is smaller than the second defrosting temperature reference Tst2, and the second defrosting temperature reference Tst2 is smaller than the third defrosting temperature reference Tst 3.
The first time reference value tst1 is smaller than the second time reference value tst2 and the second time reference value tst2 is smaller than the third time reference value tst 3.
The time reference values and the specific temperature values and the specific time values of the temperature reference values may be defined according to actual defrosting conditions and specifications of actually used air conditioners, and are not specifically limited herein.
It should be noted that in the range from 0 to the first time reference tst1, the air conditioner does not need to be defrosted because the operation time of the air conditioner is short.
In a preferred embodiment of the present application, as shown in fig. 2, the method further comprises: it is confirmed that the preset temperature of the defrosting temperature sensor is set to the second defrosting temperature reference value Tst2 within the range of the second time reference value Tst2 to the third time reference value Tst 3. It should be noted that the present embodiment may be used as a basis for determining whether to defrost the outdoor unit when the continuously accumulated operation time is within the range from the second time reference value tst2 to the third time reference value tst 3.
In a preferred embodiment of the present application, as shown in fig. 2, the method further comprises: after confirming the third time reference value Tst3, the preset temperature of the defrosting temperature sensor is set to the third defrosting temperature reference value Tst 3. It should be noted that the present embodiment may be used as a basis for determining whether to defrost after the continuously accumulated operation time of the outdoor unit exceeds the third time reference Tst 3.
In a preferred embodiment of the present application, after step S4, the method further includes: in step S5, it is confirmed that the actual temperature Tcs of the defrosting temperature sensor is less than the second defrosting temperature reference value Tst2 within the range from the second time reference value Tst2 to the third time reference value Tst3, and the heating member is activated to heat-defrost the inner coil of the outdoor unit. Specifically, when it is confirmed that the actual temperature Tcs of the defrosting temperature sensor is less than the second defrosting temperature reference value Tst2 within the range from the second time reference value Tst2 to the third time reference value Tst3, the heating member needs to be activated, and heat is generated by the heating member and transferred to the inner coil of the outdoor unit, so that the purpose of heating and defrosting the inner coil of the outdoor unit can be achieved.
It should be noted that the step of "confirming that the actual temperature Tcs of the defrosting temperature sensor is less than the second defrosting temperature reference value Tst 2" in the range from the second time reference value Tst2 to the third time reference value Tst3 "mentioned in the step S5 may be used as a limiting condition for controlling the heating member to be activated, and if the above condition is satisfied, the heating member needs to be activated and heated, and if the above condition is not satisfied, the heating member is in a non-operation state.
In a preferred embodiment of the present application, after step S5, the method further includes: in step S6, after confirming that the actual temperature Tcs of the defrosting temperature sensor is less than the third defrosting temperature reference Tst3 after the third time reference Tst3, the heating member is activated to heat and defrost the inner coil of the outdoor unit. Specifically, after the third time reference value Tst3 is confirmed, if the actual temperature Tcs of the defrosting temperature sensor is smaller than the third defrosting temperature reference value Tst3, the heating element needs to be activated, and heat is generated by the heating element and transferred to the inner coil of the outdoor unit, so that the purpose of heating and defrosting the inner coil of the outdoor unit can be achieved.
The step of "confirming that the actual temperature Tcs of the defrosting temperature sensor is less than the third defrosting temperature reference value Tst3 after the third time reference value Tst 3" in step S6 may be used as a limiting condition for controlling the heating member to be activated, and if the above condition is satisfied, the heating member needs to be activated and heated, and if the above condition is not satisfied, the heating member is in a non-operating state.
In a preferred embodiment of the present application, after step S4, step S5, or step S6, the method further comprises: confirming that the actual temperature Tcs of the defrosting temperature sensor is greater than a defrosting end preset temperature Tref, and stopping the operation of the heating part, wherein the defrosting end preset temperature Tref is greater than the third defrosting temperature reference Tst 3. Specifically, by making the defrosting end preset temperature Tref greater than the third defrosting temperature reference value Tst3, at this time, if it is determined that the actual temperature Tcs of the defrosting temperature sensor is greater than the defrosting end preset temperature Tref, it indicates that the current temperature of the heating member is greater than the third defrosting temperature reference value Tst3, at this time, the heating member does not need to continue to be heated, and the current temperature of the heating member can already meet the condition of defrosting the inner coil of the outdoor unit.
In another preferred embodiment of the present application, the method further comprises: after confirming that the time during which the actual temperature Tcs of the defrosting temperature sensor is less than the first defrosting temperature reference value Tst1, the second defrosting temperature reference value Tst2 or the third defrosting temperature reference value Tst3 is continuously a first preset time1, the heating member is re-activated. In this way, by defrosting the inner coil of the outdoor unit after a period of time, repeated start and stop of the defrosting mode can be effectively avoided, and the mode of defrosting immediately when the actual temperature Tcs of the defrosting temperature sensor is just lower than the first defrosting temperature reference value Tst1, the second defrosting temperature reference value Tst2 or the third defrosting temperature reference value Tst3 is avoided. When the time that the actual temperature Tcs of the defrosting temperature sensor is less than the first defrosting temperature reference value Tst1, the second defrosting temperature reference value Tst2 or the third defrosting temperature reference value Tst3 is continuously set to the first preset time1, the heating component is started again, so that the defrosting can be effectively ensured to be smoothly carried out, the repeated defrosting is avoided, and the purpose of saving energy is achieved.
In one specific embodiment, the first preset time1 is preferably 30s (seconds).
In a preferred embodiment of the present application, the method further comprises: when the heating component is started, the temperature of the defrosting temperature sensor is compensated. Specifically, if it is confirmed that the actual temperature Tcs of the defrosting temperature sensor is still less than the corresponding first defrosting temperature reference value Tst1, the second defrosting temperature reference value Tst2 or the third defrosting temperature reference value Tst3 within the corresponding time period within the first preset time1, the defrosting temperature sensor may be temperature compensated by adding 2 ℃ (celsius) to the actual temperature Tcs of the current defrosting temperature sensor, so as to enable the actual temperature Tcs of the defrosting temperature sensor to be higher than the first defrosting temperature reference value Tst1, the second defrosting temperature reference value Tst2 or the third defrosting temperature reference value Tst3 within a short time as soon as possible, thereby avoiding that the actual temperature Tcs of the defrosting temperature sensor cannot be higher than the first defrosting temperature reference value Tst1, the second defrosting temperature reference value Tst2 or the third defrosting temperature reference value Tst3 all the time, and the four-way valve of the air conditioner is reversed, so that the air conditioner is switched from the current heating mode to the cooling mode to defrost. Further, the indoor unit is prevented from being incapable of blowing hot air, so that the experience of a user is reduced. Therefore, the defrosting temperature sensor is subjected to temperature compensation, so that the air conditioner can defrost without shutdown in normal weather, and meanwhile, the air conditioner is switched to a working mode to defrost in severe weather through the reversing of the four-way valve.
It is to be understood that "2" in "adding 2" to the current actual temperature Tcs of the defrosting temperature sensor "mentioned in the above embodiments is merely an example, and the compensation of the actual temperature Tcs of the defrosting temperature sensor may be determined according to actual conditions, and is not limited specifically herein.
It should be noted that the starting condition of the temperature compensation is to confirm that the time when the actual temperature Tcs of the defrosting temperature sensor is less than the first defrosting temperature reference Tst1, the second defrosting temperature reference Tst2 or the third defrosting temperature reference Tst3 is continuously the first preset time 1.
The end condition of the temperature compensation is that the defrosting is ended.
In another preferred embodiment of the present application, the method further comprises: after the defrosting temperature sensor is subjected to temperature compensation, and the time that the actual temperature Tcs of the defrosting temperature sensor is less than the first defrosting temperature reference value Tst1, the second defrosting temperature reference value Tst2 or the third defrosting temperature reference value Tst3 is continuously determined as a second preset time2, the air conditioner is switched from the current heating mode to the cooling mode, wherein the second preset time2 is greater than the first preset time 1. Specifically, when the air conditioner is in a heating mode and the inner coil of the outdoor unit needs to be defrosted, the heating element may be started and the defrosting temperature sensor may be temperature compensated at the same time, so that the actual temperature of the defrosting temperature sensor is still lower than the first defrosting temperature reference value Tst1, the second defrosting temperature reference value Tst2, or the third defrosting temperature reference value Tst3 within the first preset time1 to the second preset time2, that is, it indicates that the actual temperature of the heating element still does not reach an ideal state, the four-way valve of the air conditioner may be switched, and the current heating mode is switched to a cooling mode for defrosting.
It should be noted that the second preset time2 is preferably 2 minutes.
According to a second aspect of the present application, there is provided an air conditioner (not shown in the drawings), including an indoor unit and an outdoor unit connected to the indoor unit, an inner coil and a heating unit for heating the inner coil are respectively disposed inside the outdoor unit, a defrosting temperature sensor is disposed on the inner coil, and the air conditioner further includes a processor for executing the above-mentioned control method for defrosting the air conditioner without stopping the air conditioner.
Wherein, when the phenomenon of frosting takes place for the interior coil pipe of off-premises station, for the normal heat transfer of ensureing the off-premises station, simultaneously, avoid the air conditioner to switch the operational mode, promptly, avoid the air conditioner to switch into the refrigeration mode by current mode of heating, then can be through add the heater block in the inside of off-premises station, through starting this heater block, alright transmit the heat with the interior coil pipe to the off-premises station to reach the purpose of defrosting for the interior coil pipe of off-premises station.
It should be noted that the defrosting temperature sensor is used for detecting the temperature of the inner coil of the outdoor unit in real time.
The defrosting temperature sensor is preferably disposed at an outlet of an inner coil of the outdoor unit, and the heating member is preferably disposed on or around the inner coil of the outdoor unit or at an air inlet of the outdoor unit.
In a specific embodiment, the heating element may be a heating wire, a heating net, a heater, a heating plate, a heating block, or the like.
According to the third aspect of the present application, there is also provided a computer-readable storage medium having a control program of an air conditioner stored thereon, the control program of the air conditioner, when executed by a processor, implementing the above-mentioned control method for defrosting the air conditioner without stopping.
As described above, when the air conditioner is in the heating mode, once the inner coil of the outdoor unit is frosted, in order to ensure that the outdoor unit can perform normal heat exchange, the inner coil of the outdoor unit needs to be defrosted, and in order to ensure that the air conditioner can perform defrosting while heating, the heating element needs to be activated to heat and defrost the inner coil of the outdoor unit by confirming that the actual temperature Tcs of the defrosting temperature sensor is less than the first defrosting temperature reference Tst1 within the range from the first time reference Tst1 to the second time reference Tst 2. Therefore, the control method for defrosting of the air conditioner without stopping the machine can achieve the purpose of better defrosting the inner coil of the outdoor unit on the one hand, and also effectively avoid reversing of the four-way valve and switching of the operation modes of the air conditioner, so that the air conditioner can still keep the original heating mode to continue to operate in the defrosting process, and therefore the indoor unit can still continuously blow hot air indoors, so that the experience of a user is effectively guaranteed, the reduction of the room temperature caused by indoor heat-free air is avoided, and the comfort level of the user is reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A control method for defrosting of an air conditioner without stopping the machine is characterized by comprising an indoor unit and an outdoor unit connected with the indoor unit, wherein an inner coil pipe and a heating component used for heating the inner coil pipe are respectively arranged in the outdoor unit, and a defrosting temperature sensor is arranged on the inner coil pipe, and the control method comprises the following steps:
step S1, setting a first defrost temperature reference value, a second defrost temperature reference value, and a third defrost temperature reference value of the defrost temperature sensor, respectively;
step S2, setting a first time reference value, a second time reference value, and a third time reference value for continuous cumulative operation of the outdoor unit, respectively;
step S3, confirming that the preset temperature of the defrosting temperature sensor is set to a first defrosting temperature reference value within a range from a first time reference value to a second time reference value; confirming that the preset temperature of the defrosting temperature sensor is set as a second defrosting temperature reference value within the range from the second time reference value to a third time reference value; after confirming the third time reference value, setting the preset temperature of the defrosting temperature sensor as a third defrosting temperature reference value;
step S4, determining that the actual temperature of the defrosting temperature sensor is less than the first defrosting temperature reference value within a range from the first time reference value to the second time reference value, and activating the heating element to heat and defrost the inner coil of the outdoor unit;
step S5, determining that the actual temperature of the defrosting temperature sensor is less than the second defrosting temperature reference value within a range from the second time reference value to a third time reference value, and activating the heating element to heat and defrost the inner coil of the outdoor unit;
and step S6, after confirming that the actual temperature of the defrosting temperature sensor is less than the third defrosting temperature reference value after the third time reference value, activating the heating component to heat and defrost the inner coil of the outdoor unit.
2. The method of claim 1, wherein after step S4, step S5, or step S6, the method further comprises: and confirming that the actual temperature of the defrosting temperature sensor is greater than the defrosting ending preset temperature, and stopping the work of the heating part, wherein the defrosting ending preset temperature is greater than the third defrosting temperature reference value.
3. The method of claim 1, wherein after step S4, step S5, or step S6, the method further comprises: and confirming that the actual defrosting accumulated running time of the defrosting temperature sensor is greater than the defrosting ending preset time, and stopping the heating component, wherein the defrosting ending preset time is greater than the third time reference value.
4. The method of claim 3, further comprising: and after the time that the actual temperature of the defrosting temperature sensor is smaller than the first defrosting temperature reference value, the second defrosting temperature reference value or the third defrosting temperature reference value is confirmed to be a first preset time, the heating component is started again.
5. The method of claim 4, further comprising:
and when the heating component is started, the defrosting temperature sensor is subjected to temperature compensation.
6. The method of claim 5, further comprising: and after the defrosting temperature sensor is subjected to temperature compensation, after the actual temperature of the defrosting temperature sensor is confirmed to be less than the first defrosting temperature reference value, the second defrosting temperature reference value or the third defrosting temperature reference value for a second preset time, the air conditioner is switched from the current heating mode to the cooling mode, wherein the second preset time is greater than the first preset time.
7. An air conditioner, comprising an indoor unit and an outdoor unit connected to the indoor unit, wherein an inner coil and a heating member for heating the inner coil are respectively disposed in the outdoor unit, the inner coil is provided with a defrosting temperature sensor, and the air conditioner further comprises a processor for executing the control method of defrosting the air conditioner according to any one of claims 1 to 6 without stopping.
8. A computer-readable storage medium, wherein a control program of an air conditioner is stored on the computer-readable storage medium, and when the control program of the air conditioner is executed by a processor, the control method of defrosting the air conditioner without stopping according to any of the above claims 1 to 6 is implemented.
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| CN113357782B (en) * | 2021-06-07 | 2023-01-13 | 青岛海尔空调器有限总公司 | Air conditioner control method, device and equipment |
| CN114061032A (en) * | 2021-10-28 | 2022-02-18 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method and device and air conditioner |
| CN114061031A (en) * | 2021-10-28 | 2022-02-18 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method and device and air conditioner |
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