CN111089395A - Method for defrosting evaporator by changing flow, computer readable storage medium and air conditioner - Google Patents

Method for defrosting evaporator by changing flow, computer readable storage medium and air conditioner Download PDF

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Publication number
CN111089395A
CN111089395A CN201911224779.4A CN201911224779A CN111089395A CN 111089395 A CN111089395 A CN 111089395A CN 201911224779 A CN201911224779 A CN 201911224779A CN 111089395 A CN111089395 A CN 111089395A
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temperature
evaporator
defrosting
machine
outer ring
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CN201911224779.4A
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CN111089395B (en
Inventor
张立辉
熊硕
王宁
梁俊楚
朱柏明
张福强
梅浩
李�浩
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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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
    • F24F11/43—Defrosting; Preventing freezing of indoor units
    • 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
    • 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
    • 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
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Defrosting Systems (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention relates to a method for defrosting an evaporator by changing flow, which relates to the technical field of air conditioners.

Description

Method for defrosting evaporator by changing flow, computer readable storage medium and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method for defrosting an evaporator by changing flow, a computer readable storage medium and an air conditioner.
Background
At present, the condition that the evaporator freezes is mainly judged by sensing the temperature of the middle part of the evaporator and accordingly the condition of the evaporator freezes, and then the frost is removed by stopping the compressor and opening the inner side of the inner fan.
Patent CN107642924A proposes that in the low-temperature refrigeration mode, the temperature of the outer disc of the condenser is obtained, and when the temperature of the outer disc of the condenser is lower than the temperature threshold of the outer disc of the condenser, the refrigeration continuous operation time of the compressor is obtained, and the continuous operation time is greater than the set value of the refrigeration operation time of the compressor, and the control unit enters the defrosting mode, where the continuous operation time is the refrigeration continuous operation time of the compressor after the temperature of the outer disc of the condenser is lower than the set. The temperature of the outer plate of the condenser is not more than 25 ℃, and the refrigerating operation time of the compressor is not less than 10 minutes. The control of the way to enter defrost mode by the continuous operation time of the compressor is not straightforward and entering defrost mode is not sensitive enough.
The patent CN103471303A achieves the purpose of condensation and frost prevention by flow control, and the main method is to set three groups of refrigerant flow paths in the evaporator, where the number of the first temperature sensors is three, the first temperature sensors are respectively disposed on the three groups of refrigerant flow paths, the first temperature values T detected and outputted are three groups, and respectively correspond to the three groups of refrigerant flow paths, the second temperature sensor is disposed on the compressor and is used for detecting the temperature of the refrigerant entering the compressor and outputting the detected second temperature value T', and the control module is used for controlling the operation of the air conditioning system; the temperature control device is connected to the first temperature sensor, the second temperature sensor, the compressor and the throttling device respectively and used for receiving a first temperature value T and a second temperature value T' transmitted by the first temperature sensor and the second temperature sensor and adjusting the flow of a refrigerant entering the evaporator by using the flow device according to the temperature values. This approach requires the use of a large number of temperature sensors, and is not very controllable and less stable.
Disclosure of Invention
The invention aims to avoid the defects in the prior art and provides a method for defrosting an evaporator by changing flow, a computer readable storage medium and an air conditioner.
The purpose of the invention is realized by the following technical scheme:
on one hand, the method for defrosting the evaporator by changing the flow rate is characterized in that the condition of defrosting is judged by sensing the temperature of the outer ring by the temperature sensor, and when defrosting is required, the number of flow paths of the inner machine through which refrigerant flows is reduced on the premise of ensuring that the amount of the refrigerant flowing into the inner machine from the outer machine is not changed.
Preferably, the condition for judging that defrosting needs to be performed by sensing the temperature of the outer ring by the temperature sensor is specifically as follows: the temperature sensor is arranged on the outer machine side of the evaporator, the temperature sensor is used for sensing the outer ring temperature of the evaporator, and the outer ring temperature is used for judging whether defrosting needs to be carried out or not.
Preferably, the specifically determining whether defrosting needs to be performed by using the outer ring temperature is: outer ring temperature TOuter cover≤T1，The external ring temperature T of the frosting needs to be improvedOuter coverAnd > T1, no defrosting needs to be entered, and the T1 is the defrosting temperature set by the system.
Preferably, the method for reducing the number of the flow paths of the indoor unit through which the refrigerant flows on the premise of ensuring that the amount of the refrigerant flowing into the indoor unit from the outdoor unit is not changed specifically comprises the following steps: a control switch (preferably a two-way valve) for controlling whether the indoor unit flow path can be used for flowing the refrigerant is arranged on the indoor unit flow path needing to be reduced.
Preferably, the total machine operation time t1 after the number of the indoor machine flow paths through which the refrigerant flows is reduced is determined whether to increase the indoor machine flow paths through which the refrigerant flows again according to the actual temperature of the inner pipe of the evaporator.
Preferably, the determining whether to increase the flow path of the internal machine through which the refrigerant flows again according to the actual temperature of the inner pipe of the evaporator is specifically: judging the actual temperature T of the inner tube of the evaporatorInner partWhether the temperature is less than or equal to T2, if so, judging the actual temperature T of the inner tube of the evaporatorInner partIf T2 is less than or equal to the time T2, if yes, the flow path of the inner machine through which the refrigerant flows is increased again.
Preferably, the actual temperature T of the inner tube of the evaporator is determinedInner partAnd whether the temperature is less than or equal to T2, if not, continuously reducing the flow path of the internal machine through which the cooling medium flows, and normally defrosting the whole machine until the machine is shut down.
In another aspect, a system is provided that applies the above-described method for defrosting an evaporator by varying a flow rate.
Preferably, the system is an air conditioner, the air conditioner comprises an evaporator and a processor, and further comprises a temperature sensor for sensing the temperature of an outer ring and a temperature sensing bulb for sensing the actual temperature of an inner pipe of the evaporator, the temperature sensing bulb is arranged on an inner pipe flow path, a control switch for controlling whether the inner pipe flow path of the evaporator can be used for cooling medium to flow through is arranged on part of the inner pipe flow path of the evaporator, the temperature collected by the temperature sensor and the temperature sensing bulb is transmitted to the processor, and the processor controls the on or off of the control switch according to the temperature of the outer ring collected by the temperature sensor and the actual temperature of the inner pipe of the evaporator collected by the temperature sensing bulb.
In another aspect, a computer-readable storage medium is also provided for storing a computer program which, when called by a processor, performs the method described above.
The invention has the beneficial effects that: in the prior art, generally, the evaporating temperature and the exhaust temperature of a compressor are used as judgment bases, and the flow rate of a refrigerant in an evaporator of an internal machine is controlled by a throttling device of an external machine, the logic of the method seems to have no problem, but the flow rate needs to be increased to reduce the overheating degree of the evaporator in the actual operation process of low-temperature refrigeration, so that the temperature sensing bulb can carry out accurate temperature judgment, the flow rate is increased to reduce the overheating degree of the evaporator in the low-temperature refrigeration process, the overheating degree is increased in the same way as the throttling degree reduction process of the whole machine, and the defrosting problem of the whole machine is difficult to be ensured to be optimal. The invention relates to a method for defrosting an evaporator by changing flow, which judges the condition of defrosting by sensing the temperature of an outer ring by a temperature sensor, and achieves the aim of reducing the overheating degree by reducing the number of flow paths of an inner machine through which a refrigerant flows to reduce the interference of the refrigerant in the evaporator on the premise of ensuring that the refrigerant of an outer machine flows into the refrigerant of the inner machine, and the method is simple, direct, easy to realize and more reliable.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
Fig. 1 is a schematic view of the structure of an evaporator of the present invention having five inner tube flow paths.
FIG. 2 is a schematic of a method of varying flow to defrost an evaporator according to the present invention.
FIG. 3 is a schematic illustration of the position of the bulb of the evaporator of the present invention having five inner tube flow paths.
FIG. 4 is a flow chart of a method of defrosting an evaporator by varying the flow rate of the present invention.
The figure includes: two-way valve 1, evaporator 2, shunt 3.
Detailed Description
The invention is further described with reference to the following examples.
The invention relates to a method for defrosting an evaporator by changing flow, which judges the condition of defrosting by sensing the temperature of an outer ring by a temperature sensor, and reduces the number of flow paths of an inner machine through which a refrigerant flows on the premise of ensuring that the amount of the refrigerant flowing into the inner machine from an outer machine is not changed when the defrosting is required.
As a preferred embodiment, the condition for judging that defrosting needs to be entered by sensing the temperature of the outer ring by means of the temperature sensor is specifically as follows: and a temperature sensor is arranged on the outer machine side of the evaporator 2, the temperature sensor is used for sensing the outer ring temperature of the evaporator 2, and the outer ring temperature is used for judging whether defrosting needs to be carried out or not.
As a preferred embodiment, the determining whether defrosting needs to be entered by using the outer ring temperature specifically comprises: outer ring temperature TOuter coverT1, defrosting is needed, and the temperature T of the outer ringOuter coverT1, no entry into defrost is required, T1 is the system set defrost temperature, and as a preferred embodiment, T1 is 18 °.
As a preferred embodiment, the method for reducing the number of the flow paths of the internal machine through which the refrigerant flows on the premise of ensuring that the amount of the refrigerant flowing into the internal machine from the external machine is not changed specifically comprises: a control switch (preferably, a two-way valve 1) for controlling whether or not the indoor unit flow path through which refrigerant can flow is provided on the indoor unit flow path that needs to be reduced.
In a preferred embodiment, the total machine operating time t1 after the number of the indoor machine flow paths through which the refrigerant flows is reduced is t1, which is 5 minutes as a preferred embodiment, and whether to increase the indoor machine flow paths through which the refrigerant flows again is determined according to the actual temperature of the inner pipe of the evaporator 2.
As a preferred embodiment, the determination of whether to increase the flow path of the internal machine through which the refrigerant flows again according to the actual temperature of the inner pipe of the evaporator 2 is specifically as follows: judging the actual temperature T of the inner tube of the evaporator 2Inner partWhether T2 is less than or equal to, if so, judging the inner tube of the evaporator 2Actual temperature TInner partWhether the time T2 is exceeded or not at T2 is not more than, if yes, an internal machine flow path through which a refrigerant flows is increased again, wherein T2 is 0 degree, and T2 is preferably 5 minutes.
As a preferred embodiment, the actual temperature T of the inner tube of the evaporator 2 is judgedInner partAnd whether the temperature is less than or equal to T2, if not, continuously reducing the flow path of the internal machine through which the cooling medium flows, and normally defrosting the whole machine until the machine is shut down.
In another aspect, a system is provided for applying the above-described method for defrosting an evaporator 2 by varying the flow rate.
As a preferred embodiment, the system is an air conditioner, the air conditioner includes an evaporator 2 and a processor, and further includes a temperature sensor for sensing an outer ring temperature and a thermal bulb for sensing an actual temperature of an inner tube of the evaporator 2, the thermal bulb is disposed on an inner tube flow path, a control switch for controlling whether the inner tube flow path of the evaporator 2 can be used for flowing a cooling medium is disposed on a part of the inner tube flow path, the temperatures collected by the temperature sensor and the thermal bulb are transmitted to the processor, and the processor controls the on or off of the control switch according to the outer ring temperature collected by the temperature sensor and the actual temperature of the inner tube of the evaporator 2 collected by the thermal bulb.
In another aspect, a computer-readable storage medium is also provided for storing a computer program which, when called by a processor, performs the method described above.
Example 1.
A method for defrosting an evaporator 2 by changing a flow rate, which is applied to an air conditioner having an evaporator 2 of five inner pipe flow paths each including three bends, wherein an inlet pipe bend is located outside the evaporator 2, an outlet pipe bend is located inside the evaporator 2, and a bulb is preferably placed at the outlet pipe bend of the inner pipe flow path located at a middle position, as shown in fig. 3, and is advantageous in that: the inner pipes of the evaporator 2 at different positions are influenced by wind fields in different sizes, the accuracy of sensing the temperature of the inner pipes in other inner pipe flow paths is low, and the temperature sensing bulb is arranged at the position to sense the temperature of the inner pipes accurately.
As shown in fig. 1, two-way valves 1 are provided in two of the inner pipe flow paths, respectively.
As shown in fig. 2 and 4, the method includes the steps of:
s1: and judging whether the air conditioner is in a refrigeration mode, if so, entering the next step, and if not, normally opening the two-way valve 1.
S2: the temperature sensor arranged at the outer side of the evaporator 2 senses and reads the outer ring temperature T of the external environmentOuter coverI.e. the outdoor ambient temperature.
S3: judging the outer ring temperature T read by the temperature sensorOuter coverIf the temperature is less than or equal to 18 ℃, the next step is carried out, and if not, the two-way valve 1 is normally opened.
S4: at this time, the outer ring temperature TOuter coverThe temperature of the two-way valve 1 is less than or equal to 18 ℃, the state of the two-way valve 1 is closed, the flow path of the evaporator 2 with the two-way valve 1 is in a state of no refrigerant flowing, and other refrigerant flow paths are in a refrigerant interference state.
S5: the whole machine continues to run for 5min under the condition that the two-way valve 1 is closed.
S6: after running for 5min, the actual temperature T of the inner tube of the evaporator 2 is judgedInner partWhether or not it is less than or equal to 0 ℃. If yes, the next step is carried out, and if not, the two-way valve 1 is normally closed until shutdown.
S7: judging the actual temperature T of the inner tube of the evaporator 2Inner partIf the temperature is less than or equal to 0 ℃ and exceeds 5min, otherwise, the two-way valve 1 is in a normally closed state, and the whole machine normally defrosts and runs until the machine is shut down; if yes, the next step is carried out.
S8: due to the actual temperature T of the inner tube of the evaporator 2Inner partNot more than 0 ℃ and the time is more than 5mim, so the whole machine enters a defrosting state.
S9: after the system is defrosted for the first time, the two-way valve 1 is started, and S5 is repeated until the whole machine is stopped.
Normal air conditioner refrigeration prevents that evaporimeter 2 from freezing frost is mainly through sensing 2 middle part temperatures of evaporimeter and judging the evaporimeter 2 condition of freezing frost from this, then remove the frost through stopping the compressor and opening the fan inboard in, this kind of method uses general not problem under normal conditions, nevertheless under special circumstances, outdoor temperature crosses lowly, there is the refrigeration demand in step, lead to system pressure to cross lowly, evaporating pressure crosses lowly, lead to 2 local frostings of evaporimeter, 2 middle part temperatures of evaporimeter are overheated refrigerant temperature, the unable accurate judgement evaporimeter 2 condition of freezing frost.
The main core device of the present embodiment is composed of a temperature sensor and an evaporator 2 with a two-way valve 1. An evaporator 2 with a two-way valve 1 is shown in fig. 1. Wherein, a two-way valve 1 is added at the inlet position of the 1 st branch and the 2 nd branch respectively (the figure shows that 5 enters and 5 exits the evaporator 2.
When the outer ring temperature TOuter coverWhen the temperature is less than or equal to 18 ℃, namely the minimum operation refrigeration is carried out or the low-temperature refrigeration working condition is carried out, the two-way valves 1 of the evaporator 2 are controlled to be closed after the outdoor environment temperature is sensed through the temperature sensor, and the original 5-in 5-out evaporator 2 is changed into 3-in 3-out evaporator 2. At this time, no refrigerant flows through the first two paths, which is equivalent to that the refrigerant amount in the system is increased by a part compared with the normal condition, in this case, the system pressure can be increased, and the superheat degree of the remaining three-path evaporator 2 is also reduced due to the increase of the part of the refrigerant. At this time, the temperature bulb of the evaporator 2 senses the actual temperature T of the inner tubeInner partLower than the temperature before the two-way valve 1 is closed, and more precisely, when TInner partWhen the temperature is lower than 0 ℃, the system enters a defrosting mode after continuously running for 5 minutes. The frosting degree is much thinner than before, and the phenomenon of frosting failure can not occur.
When the outer ring temperature TOuter coverWhen the temperature is higher than 18 ℃, the temperature sensor senses the temperature of the outer ring and then controls the two-way valve 1 to be opened, and at the moment, the system recovers the 5-in and 5-out mode and enters a normal refrigeration mode.
Therefore, in the embodiment, the condition that defrosting needs to be performed is judged by sensing the temperature of the outer ring through the temperature sensor, and on the premise that the quantity of the refrigerant flowing into the inner machine from the outer machine is not changed, the refrigerant in the evaporator 2 is enabled to be in interference fit through reducing the number of the flow paths of the inner machine through which the refrigerant flows, so that the purpose of reducing the overheating degree is achieved.
Example 2.
This embodiment is different from embodiment 1 in that the evaporator 2 has three inner tube flow paths (i.e., 3 in and 3 out), a bulb is provided at the outlet pipe of the inner tube flow path located at the middle position, and the 3 in and 3 out is provided with a two-way valve 1 only at the inlet of the 1 st branch.
Example 3.
This embodiment is different from embodiment 1 in that the evaporator 2 has two inner tube flow paths (i.e., 2 in and 2 out), a bulb is provided on the inner tube of one of the inner tube flow paths, and the 2 in and 2 out is provided with a two-way valve 1 only at the inlet of the 1 st branch.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. A method of defrosting an evaporator by changing the flow rate, characterized by: the method is characterized in that the temperature of the outer ring is sensed by the temperature sensor to judge the condition of defrosting, and when defrosting is required, the number of the flow paths of the inner machine through which the refrigerant flows is reduced on the premise of ensuring that the amount of the refrigerant flowing into the inner machine from the outer machine is not changed.
2. A method of defrosting an evaporator by varying the flow rate as set forth in claim 1 wherein: the condition for judging that defrosting needs to be carried out by sensing the temperature of the outer ring by the temperature sensor is specifically as follows: the temperature sensor is arranged on the outer machine side of the evaporator, the temperature sensor is used for sensing the outer ring temperature of the evaporator, and the outer ring temperature is used for judging whether defrosting needs to be carried out or not.
3. A method of defrosting an evaporator by varying the flow rate as set forth in claim 2 wherein: the specific steps of judging whether defrosting needs to be carried out by utilizing the outer ring temperature are as follows: outer ring temperature TOuter coverLess than or equal to T1, if necessaryDefrosting, outer ring temperature TOuter coverAnd > T1, no defrosting needs to be entered, and the T1 is the defrosting temperature set by the system.
4. A method of defrosting an evaporator by varying the flow rate as set forth in claim 1 wherein: the method for reducing the number of the flow paths of the internal machine through which the refrigerant flows on the premise of ensuring that the amount of the refrigerant flowing into the internal machine from the external machine is not changed specifically comprises the following steps: and arranging a control switch for controlling whether the internal machine flow path can be used for flowing cooling media or not on the internal machine flow path needing to be reduced.
5. A method of defrosting an evaporator by varying the flow rate as set forth in claim 1 wherein: after the number of the indoor unit flow paths through which the refrigerant flows is reduced, the whole unit operation time t1 is determined whether to increase the indoor unit flow paths through which the refrigerant flows again according to the actual temperature of the inner pipe of the evaporator.
6. A method of defrosting an evaporator by varying the flow rate as set forth in claim 5 wherein: the specific steps of determining whether to increase the flow path of the internal machine for the refrigerant to flow through again according to the actual temperature of the inner pipe of the evaporator are as follows: judging the actual temperature T of the inner tube of the evaporatorInner partWhether the temperature is less than or equal to T2, if so, judging the actual temperature T of the inner tube of the evaporatorInner partIf T2 is less than or equal to the time T2, if yes, the flow path of the inner machine through which the refrigerant flows is increased again.
7. A method of defrosting an evaporator by varying the flow rate as set forth in claim 6 wherein: judging the actual temperature T of the inner tube of the evaporatorInner partAnd whether the temperature is less than or equal to T2, if not, continuously reducing the flow path of the internal machine through which the cooling medium flows, and normally defrosting the whole machine until the machine is shut down.
8. A system applying the method of defrosting an evaporator by varying the flow rate of any one of claims 1 to 7.
9. The system of claim 8, wherein: the system is an air conditioner, the air conditioner comprises an evaporator and a processor, and further comprises a temperature sensor used for sensing the temperature of an outer ring and a temperature sensing bulb used for sensing the actual temperature of an inner pipe of the evaporator, the temperature sensing bulb is arranged on an inner pipe flow path, a control switch used for controlling whether the inner pipe flow path of the evaporator can be used for cooling medium flowing or not is arranged on part of inner pipe flow paths of the evaporator, the temperature collected by the temperature sensor and the temperature sensing bulb is transmitted to the processor, and the processor controls the opening or closing of the control switch according to the temperature of the outer ring collected by the temperature sensor and the actual temperature of the inner pipe of the evaporator collected by the temperature sensing bulb.
10. A computer-readable storage medium storing a computer program, characterized in that: the computer program, when invoked by a processor, performs the method of any of claims 1 to 7.
CN201911224779.4A 2019-12-04 2019-12-04 Method for defrosting evaporator by changing flow, computer readable storage medium and air conditioner Active CN111089395B (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN112361533A (en) * 2020-10-12 2021-02-12 珠海格力电器股份有限公司 Defrosting method for air conditioner with upper air outlet and lower air outlet

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CN101256021A (en) * 2007-09-27 2008-09-03 宁波奥克斯空调有限公司 Control method for air conditioner capable of low-temperature refrigeration
CN101680696A (en) * 2007-06-12 2010-03-24 丹佛斯公司 A method for controlling a vapour compression system
CN103471303A (en) * 2013-09-29 2013-12-25 Tcl空调器(中山)有限公司 Air conditioner and anti-condensation method thereof
WO2014172268A2 (en) * 2013-04-15 2014-10-23 Parker-Hannifin Corporation Variable capacity evaporator

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Publication number Priority date Publication date Assignee Title
CN101680696A (en) * 2007-06-12 2010-03-24 丹佛斯公司 A method for controlling a vapour compression system
CN101256021A (en) * 2007-09-27 2008-09-03 宁波奥克斯空调有限公司 Control method for air conditioner capable of low-temperature refrigeration
WO2014172268A2 (en) * 2013-04-15 2014-10-23 Parker-Hannifin Corporation Variable capacity evaporator
CN103471303A (en) * 2013-09-29 2013-12-25 Tcl空调器(中山)有限公司 Air conditioner and anti-condensation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112361533A (en) * 2020-10-12 2021-02-12 珠海格力电器股份有限公司 Defrosting method for air conditioner with upper air outlet and lower air outlet
CN112361533B (en) * 2020-10-12 2022-04-22 珠海格力电器股份有限公司 Defrosting method for air conditioner with upper air outlet and lower air outlet

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