CN113566465A - Defrosting structure and air conditioner - Google Patents
Defrosting structure and air conditioner Download PDFInfo
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- CN113566465A CN113566465A CN202110734326.7A CN202110734326A CN113566465A CN 113566465 A CN113566465 A CN 113566465A CN 202110734326 A CN202110734326 A CN 202110734326A CN 113566465 A CN113566465 A CN 113566465A
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- 238000010257 thawing Methods 0.000 title claims abstract description 113
- 238000010438 heat treatment Methods 0.000 abstract description 20
- 230000000694 effects Effects 0.000 abstract description 10
- 238000005336 cracking Methods 0.000 abstract 1
- 239000003570 air Substances 0.000 description 171
- 238000007664 blowing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located 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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
- F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- 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
- F24F13/30—Arrangement or mounting of heat-exchangers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a defrosting structure and an air conditioner. Wherein, defrosting structure includes: the fan is provided with an air inlet and an air outlet, and the air inlet is positioned indoors; and one end of the air supply pipe is connected with the air outlet, and the other end of the air supply pipe is provided with an air supply outlet which faces the heat exchanger coil of the outdoor unit. According to the defrosting structure provided by the invention, indoor air is sucked by the fan and blown to the heat exchanger coil of the outdoor unit by the air supply pipe, so that defrosting of the heat exchanger coil of the outdoor unit can be realized, frost cracking of the pipeline is avoided, the power consumption is saved, the operation efficiency of the air conditioner is improved, the air conditioner can continuously heat in winter, defrosting operation is performed without reversing, the defrosting effect of the defrosting structure can be enhanced under the heating effect in the air conditioner, the user experience is improved, and the indoor hot air is directly used for defrosting, so that the power consumption can be saved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a defrosting structure and an air conditioner.
Background
With the development of society, the living standard of people is continuously improved, the air conditioner becomes the electrical equipment essential in daily life of people, and the air conditioner can meet the requirements of people on the surrounding environment by adjusting and controlling the parameters of temperature, humidity, flow rate and the like of the ambient air in a building or a structure.
At present, when an air conditioner heats in winter, a condenser of an outdoor unit absorbs heat, and thus after the air conditioner operates for a period of time, the condenser of the outdoor unit generates a frosting phenomenon, a pipeline is possibly frozen, power consumption is increased, and operating efficiency of the air conditioner is reduced. Thus, in the prior art, in order to defrost the condenser of the outdoor unit, the indoor unit and the outdoor unit of the air conditioner need to be reversed to perform the defrosting operation.
However, when the air conditioner performs defrosting, the air conditioner cannot continuously heat, so that the indoor heating effect is poor and the user experience is not good.
Disclosure of Invention
The invention provides a defrosting structure and an air conditioner, which are used for solving the defects that the air conditioner cannot continuously heat when the air conditioner defrosts in the prior art, so that the indoor heating effect is poor and the user experience is poor, and realizing the improvement of the user experience.
The present invention provides a defrosting structure, including:
the fan is provided with an air inlet and an air outlet, and the air inlet is positioned indoors;
and one end of the air supply pipe is connected with the air outlet, and the other end of the air supply pipe is provided with an air supply outlet which faces the heat exchanger coil of the outdoor unit.
According to the defrosting structure provided by the invention, the fan comprises a shell, an impeller and a motor, a cavity is formed in the shell, the air inlet is formed in the side wall of one side of the shell, the motor is fixed on the side wall of the other side of the shell, the impeller is arranged in the cavity and is opposite to the air inlet, and an output shaft of the motor is fixedly connected with the center of the impeller.
According to the defrosting structure provided by the invention, the side edge of the fan is provided with the air outlet connecting section, the end part of the air outlet connecting section, which is far away from the fan, is provided with the air outlet, and the air outlet connecting section is detachably connected with one end of the air supply pipe.
According to the defrosting structure provided by the invention, the outer side wall of the end part of the air outlet connecting section is provided with the clamping column, one end of the air supply pipe is provided with the connector, the side wall of the connector is provided with the clamping groove, the end part of the air outlet connecting section is inserted into the connector, and the clamping column is embedded into the clamping groove, so that the air outlet connecting section is detachably connected with one end of the air supply pipe.
The invention also provides an air conditioner, which comprises an indoor unit, an outdoor unit and the defrosting structure;
the fan is connected with the indoor unit, the other end of the air supply pipe extends into the outdoor unit, and the air supply opening faces the heat exchanger coil of the outdoor unit.
According to the air conditioner provided by the invention, the indoor unit comprises a shell and a framework, the shell is arranged outside the framework in a surrounding mode, the shell is provided with an air inlet hole, the fan is arranged in the shell and is fixed on the framework, and an air inlet of the fan is arranged opposite to the air inlet hole.
According to the air conditioner provided by the invention, the side wall of the fan is provided with the air outlet connecting section, the end part of the air outlet connecting section, which is far away from the fan, is provided with the air outlet, and the air outlet connecting section extends out of the shell.
According to the air conditioner provided by the invention, the indoor unit is a hanging type machine body, the shell is provided with a side hole for a drain pipe to pass through, the side hole and the air inlet hole are positioned on the same side wall of the shell, and the end part of the air outlet connecting section extends out of the side hole.
According to the air conditioner provided by the invention, the side edge of the fan is provided with the plurality of anti-resonance parts, the framework is provided with the plurality of shell cover plates, the plurality of shell cover plates correspond to the plurality of anti-resonance parts one by one, and the shell cover plates are supported on the anti-resonance parts in a propping manner.
According to the air conditioner provided by the invention, the air inlet hole is provided with the filter screen, and the filter screen and the shell are integrally formed.
According to the defrosting structure and the air conditioner, the indoor air is sucked by the fan and blown to the heat exchanger coil of the outdoor unit by the air supply pipe, so that the defrosting of the heat exchanger coil of the outdoor unit can be realized, the frost crack of the pipeline is avoided, the power consumption is saved, the operation efficiency of the air conditioner is improved, the air conditioner can continuously heat in winter, the defrosting operation is performed without reversing, and the defrosting effect of the defrosting structure can be enhanced under the internal heating effect of the air conditioner. Compared with the defrosting structure which needs reversing operation of the indoor unit and the outdoor unit in the prior art, the defrosting structure provided by the application improves user experience, directly uses indoor hot air to defrost, and can save power consumption.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is one of the schematic structural views of the defrosting structure provided by the present invention;
FIG. 2 is a schematic view of the air inlet direction and the air outlet direction of the defrosting structure provided by the present invention;
FIG. 3 is a second schematic view of the defrosting structure according to the present invention;
FIG. 4 is a schematic structural diagram of an air conditioner provided by the present invention;
reference numerals:
11: a fan; 11 a: an air inlet; 11 b: an air outlet;
111: a housing; 112: an impeller; 113: an air outlet connecting section;
114: clamping the column; 115: a fixed section; 116: an anti-resonance member;
117: a housing cover plate; 20: an indoor unit; 20 a: an air inlet hole;
20 b: side holes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The defrosting structure and the air conditioner of the present invention will be described with reference to fig. 1 to 4.
Referring to fig. 1 to fig. 3, the defrosting structure includes:
the air blower 11 is provided with an air inlet 11a and an air outlet 11b, and the air inlet 11a is positioned indoors;
and one end of the air supply pipe is connected with the air outlet 11b, and the other end of the air supply pipe is provided with an air supply outlet which faces the heat exchanger coil of the outdoor unit.
The blower 11 provided herein sucks air through the air inlet 11a and discharges the air through the air outlet 11b to realize air supply. In winter, the indoor temperature is higher than the outdoor temperature, the air inlet 11a of the fan 11 is arranged indoors, air with higher indoor temperature can be sucked in and sent to a heat exchanger coil of the outdoor unit through the blast pipe, and defrosting is achieved.
The air supply pipe is used as an air supply pipeline, preferably a heat insulation pipe, because a heat exchanger coil of the outdoor unit is frosted from the bottom to the top at first, in order to defrost the heat exchanger coil of the outdoor unit, in an embodiment, an air supply opening of the air supply pipe can be arranged at the bottom of the heat exchanger coil of the outdoor unit, so that hot air is blown upwards to the heat exchanger coil, defrosting is realized, furthermore, the end part of the air supply pipe is arranged in a closed mode, a plurality of air supply openings are formed in the air supply pipe, and the air supply pipe is arranged along the length direction of the heat exchanger coil of the outdoor unit, so that uniform defrosting of all positions of the heat exchanger coil of the outdoor unit is realized, and defrosting effect is improved. Of course, in other embodiments, the arrangement of the blower pipe is not limited to the above description and is not repeated.
In this embodiment, the air in the room is sucked by the fan 11, and the air in the room is blown to the heat exchanger coil of the outdoor unit by the air supply pipe, so that the defrosting of the heat exchanger coil of the outdoor unit can be realized, the frost crack of the pipeline is avoided, the power consumption is reduced, the operation efficiency of the air conditioner is improved, the air conditioner can continuously heat in winter, the defrosting operation is performed without reversing, and the defrosting effect of the defrosting structure can be enhanced under the heating effect in the air conditioner. Compared with the defrosting structure which needs the indoor unit 20 and the outdoor unit to run in a reversing mode in the prior art, the defrosting structure provided by the application improves user experience, directly uses indoor hot air to defrost, and can save power consumption.
Referring to fig. 1 to fig. 3, in an embodiment of the present invention, the fan 11 is a centrifugal fan 11, that is, the fan 11 includes a casing 111, an impeller 112 and a motor, the casing 111 has a cavity therein, a side wall of one side of the casing 111 has the air inlet 11a, the motor is fixed to a side wall of the other side of the casing 111, the impeller 112 is disposed in the cavity and is opposite to the air inlet 11a, and an output shaft of the motor is fixedly connected to a center of the impeller 112.
The motor drives the impeller 112 to rotate, so that air can be sucked from the air inlet 11a and thrown out to the periphery, and air supply is realized.
And, at impeller 112 pivoted in-process, in order to avoid casing 111 to take place resonance, be equipped with anti-resonance piece 116 at one side of casing 111, anti-resonance piece 116 includes screw post, shock pad and set screw, and the side of casing 111 is located to the screw post, and the bottom of screw post has the boss, and the shock pad covers the screw post periphery to fix the shock pad through screw and gasket, realize anti-resonance. In this embodiment, the housing 111 is composed of two half shells, and each half shell is provided with an anti-resonance component 116, so as to improve the stability of the operation of the fan 11.
Referring to fig. 1 to fig. 3, in addition, in an embodiment of the present invention, an air outlet connecting section 113 is disposed at a side of the fan 11, an end of the air outlet connecting section 113 away from the fan 11 is provided with the air outlet 11b, and the air outlet connecting section 113 is detachably connected to one end of the air supply pipe.
On the basis of the structure of the centrifugal fan 11, the air outlet connecting section 113 is disposed at the side of the casing 111, and the air thrown out by the fan 11 is discharged only through the air outlet connecting section 113 to realize air supply.
Specifically, in an embodiment, the lateral wall of 113 tip of air-out linkage segments has card post 114, the one end of blast pipe has the connector, the lateral wall of connector has the inlay card groove, 113 tip of air-out linkage segments peg graft in the connector, card post 114 embedding in the inlay card groove, realize air-out linkage segments 113 with the one end releasable connection of blast pipe.
Like this, can realize quick dismouting, it is further that above-mentioned inlay card groove includes vertical section and the horizontal end that is linked together, and air-out linkage segment 113 is when being connected with the one end of blast pipe, and card post 114 stretches into the bottom of vertical section, arranges horizontal end in through the rotation to the realization is fixed. In this embodiment, the number of the locking posts 114 and the locking slots is two, and the locking posts and the locking slots are in one-to-one correspondence, so that the detachable connection is more stable.
In addition, in order to ensure sealing, a sealing ring is arranged at the bottom of the connector, and after the air outlet connecting section 113 is inserted into the connector, the end part of the air outlet connecting section 113 abuts against the sealing ring to avoid air leakage.
Referring to fig. 4, in addition, the present invention also provides an air conditioner, including an indoor unit 20, an outdoor unit and the defrosting structure;
the fan 11 is connected to the indoor unit 20, the other end of the air supply pipe extends into the outdoor unit, and the air supply opening faces the heat exchanger coil of the outdoor unit.
The fan 11 is directly arranged on the indoor unit 20, so that the indoor unit is integrated with an air conditioner and is convenient to use, and the fan 11 can be independently started for defrosting or simultaneously started with the air conditioner for defrosting as required.
Specifically, in this embodiment, the indoor unit 20 includes a casing and a framework, the casing is surrounded outside the framework, the casing has an air inlet hole 20a, the fan 11 is disposed in the casing and fixed to the framework, and the air inlet 11a of the fan 11 is disposed opposite to the air inlet hole 20 a.
Thus, the fan 11 is fixed on the framework of the indoor unit 20, the integrity of the air conditioner is increased, the structure is more integrated, and the appearance of the air conditioner is not affected. Air can be sucked through the air inlet holes 20a on the shell, so that air supply and defrosting are realized. In order to fix the indoor unit 20, on the basis of the foregoing structure, two fixing sections 115 extend from the side of the casing 111 of the fan 11, and the two fixing sections 115 are arranged in a central symmetry manner and are respectively fixed on two sides of the framework by screws, thereby realizing the fixation of the fan 11.
Of course, in other embodiments, the fan 11 may also be disposed outside the indoor unit 20, which is not described herein.
In addition, on the basis that the fan 11 is arranged in the casing, an air outlet connecting section 113 is arranged on the side wall of the fan 11, the end part of the air outlet connecting section 113 far away from the fan 11 is provided with the air outlet 11b, and the air outlet connecting section 113 extends out of the casing.
The air outlet connecting section 113 is extended out of the casing to facilitate installation of the air conditioner, so that the structural installation of the air conditioner is more convenient.
Specifically, the indoor unit 20 is a hanging type body, the casing has a side hole 20b for the drainage pipe to pass through, the side hole 20b and the air inlet hole 20a are located on the same side wall of the casing, and the end of the air outlet connecting section 113 extends out of the side hole 20 b.
The side hole 20b allows a drain pipe to pass through, so that the end of the air outlet connecting section 113 extends out of the side hole 20b, and the connected blast pipe can also pass through the position, thereby facilitating installation. Specifically, the air supply pipe can be extended out in parallel with the drain pipe when being installed and then extended into the outdoor unit.
Referring to fig. 1 to 4, in addition, in an embodiment of the present invention, a plurality of anti-resonance elements 116 are disposed on a side of the fan 11, a plurality of housing cover plates 117 are disposed on the frame, the plurality of housing cover plates 117 correspond to the plurality of anti-resonance elements 116 one to one, and the housing cover plates 117 are supported by the anti-resonance elements 116.
On the basis of the structure of the anti-resonance part 116, one side of the housing cover plate 117 is semi-arc-shaped, and the semi-arc-shaped side wall of the housing cover plate 117 is supported against the anti-resonance part 116, so that the stability of the fan 11 mounted on the framework can be further improved.
In addition, the air inlet hole 20a is provided with a filter screen, and the filter screen and the shell are integrally formed.
Can be to the air prefilter of entering through this filter screen to improve the defrosting effect, avoid fan 11 to block up.
Of course, in other embodiments, a filter screen may be directly disposed at the air inlet 11a, which is not described in detail.
In combination with the above embodiments, the present invention provides a method for preventing frosting, including:
acquiring outdoor temperature;
the outdoor temperature is the outdoor ambient temperature, which is different from the temperature of the coil of the heat exchanger of the outdoor unit, but when the outdoor temperature is lower, it indicates that the temperature of the coil of the heat exchanger is also lower.
When the outdoor temperature is not higher than a first set temperature, acquiring the temperature of a coil pipe of a heat exchanger of the outdoor unit;
in order to more accurately know whether the heat exchanger coil is frosted or not, when the outdoor temperature is low, the temperature of the heat exchanger coil needs to be further acquired, and preferably, the first set temperature is 7 ℃.
And when the outdoor temperature is higher than the first set temperature, the defrosting structure is not started. At this time, the temperature of the coil of the heat exchanger does not need to be acquired, and the coil of the outdoor unit does not frost at this time, so that the defrosting structure does not need to be opened.
Whether a defrosting structure is started or not is confirmed according to the temperature of the heat exchanger coil; the defrosting structure is used for blowing air to defrost a coil pipe of a heat exchanger of the outdoor unit.
Therefore, whether the defrosting structure is started or not is determined according to the temperature of the heat exchanger coil, so that the frosting of the heat exchanger coil is prevented in advance, the frost crack of the pipeline is avoided, the power consumption is saved, the operation efficiency of the air conditioner is improved, the air conditioner can continuously heat in winter, and the defrosting operation is performed without reversing. Compared with the defrosting method which needs reversing operation of the indoor unit 20 and the outdoor unit in the prior art, the method for preventing frosting improves user experience.
In an embodiment of the present invention, the step of determining whether to start a defrosting structure according to the temperature of the heat exchanger coil, where the defrosting structure is used to blow air to defrost the heat exchanger coil of the outdoor unit, includes:
when the temperature of the coil of the heat exchanger is higher than the second set temperature and lasts for a first set time, the defrosting structure is not started;
and when the temperature of the coil pipe of the heat exchanger is not higher than the second set temperature and lasts for the first set time, starting the defrosting structure.
Therefore, the defrosting structure can be timely opened to prevent the coil pipe of the outdoor unit heat exchanger from frosting in advance, preferably, the second set temperature is 0.5 ℃, and the first set time is 2 min.
Further, the step of starting the defrosting structure when the temperature of the coil of the heat exchanger is not higher than the second set temperature and lasts for the first set time includes:
when the temperature of the coil pipe of the heat exchanger is between 0 ℃ and a second set temperature and lasts for a first set time, starting the defrosting structure to enable the fan 11 of the defrosting structure to run at a medium speed;
and when the temperature of the coil of the heat exchanger is lower than 0 ℃ and lasts for a first set time, starting the defrosting structure, and enabling the fan 11 of the defrosting structure to run at a high speed.
According to the difference of the temperature of the heat exchanger coil, the defrosting structure is changed into different blowing states, and the defrosting efficiency is improved.
And, the step of turning on the defrosting structure and operating the fan 11 of the defrosting structure at a high speed, and then:
and after a second set time, acquiring the temperature of the heat exchanger coil, and if the temperature of the heat exchanger coil is not increased, starting a heating function, wherein the fan 11 of the defrosting structure runs at a high speed and blows out hot air.
Therefore, if the temperature of the coil pipe of the heat exchanger is not increased for a long time, frosting still can be caused, at the moment, the heating function is started, the air blowing temperature is increased, and then the defrosting efficiency is improved, and preferably, the second set time is 2 min. In this embodiment, a heating function is turned on for the air conditioner to raise the indoor temperature, and the indoor air is sucked in through the defrosting structure and blown out to defrost by hot air.
In example 1, the above frosting prevention method comprises:
acquiring outdoor temperature;
when the outdoor temperature is not higher than the first set temperature and the heating function of the air conditioner is started, acquiring the temperature of a coil pipe of a heat exchanger of the outdoor unit after the heating function lasts for a third set time;
whether a defrosting structure is started or not is confirmed according to the temperature of the heat exchanger coil; the defrosting structure is used for blowing air to defrost a coil pipe of a heat exchanger of the outdoor unit.
When the air conditioner has started the heating function, after lasting the third settlement time, the compressor steady operation, the temperature of heat exchanger coil pipe can reduce, need confirm whether to open defrosting structure according to this temperature this moment to prevent frosting.
And after the step of confirming whether to start the defrosting structure according to the temperature of the heat exchanger coil:
when the defrosting structure is started and the indoor environment temperature reaches a set temperature, adjusting the air supply state of the defrosting structure according to the temperature of the heat exchanger coil;
and when the defrosting structure is not started and the indoor environment temperature reaches the set temperature, whether the defrosting structure is started or not is confirmed according to the temperature of the heat exchanger coil.
Specifically, after the defrosting structure is started, when the indoor environment temperature reaches a set temperature, the air supply state of the defrosting structure needs to be adjusted, that is, when the temperature of the coil of the heat exchanger is higher than the second set temperature and lasts for a first set time, the defrosting structure is closed; when the temperature of the coil pipe of the heat exchanger is between 0 ℃ and a second set temperature and lasts for a first set time, enabling the fan 11 of the defrosting structure to run at a medium speed; and when the temperature of the coil of the heat exchanger is lower than 0 ℃ and lasts for a first set time, enabling the fan 11 of the defrosting structure to run at a high speed.
When the defrosting structure is not started, and the indoor environment temperature reaches the set temperature, when the temperature of the coil pipe of the heat exchanger is higher than the second set temperature and lasts for the first set time, the defrosting structure is not started; when the temperature of the coil pipe of the heat exchanger is between 0 ℃ and a second set temperature and lasts for a first set time, starting the defrosting structure to enable the fan 11 of the defrosting structure to run at a medium speed; and when the temperature of the coil of the heat exchanger is lower than 0 ℃ and lasts for a first set time, starting the defrosting structure, and enabling the fan 11 of the defrosting structure to run at a high speed.
In an embodiment, the defrosting structure can electrically heat air to realize a heating function to blow out hot air for defrosting, after a second set time, the temperature of the coil of the heat exchanger is obtained, if the temperature of the coil of the heat exchanger is not increased, the heating function of the electric heating is started, and the fan 11 of the defrosting structure operates at a high speed and blows out hot air. In the embodiment of the present invention, the defrosting structure is used to suck indoor air and blow the air to the heat exchanger coil of the outdoor unit, so that the defrosting structure does not need a heating function when the heating function is turned on.
In example 2, the above frosting prevention method comprises:
acquiring outdoor temperature;
when the outdoor temperature is not higher than a first set temperature and the heating function of the air conditioner is not started, acquiring the temperature of a coil pipe of a heat exchanger of the outdoor unit;
whether a defrosting structure is started or not is confirmed according to the temperature of the heat exchanger coil; the defrosting structure is used for blowing air to defrost a coil pipe of a heat exchanger of the outdoor unit.
When the air conditioner does not start the heating function, whether to start the defrosting structure is determined directly according to the temperature of the coil pipe of the heat exchanger so as to prevent frosting.
In this way, in the step of determining whether to start the defrosting structure according to the temperature of the heat exchanger coil, when the temperature of the heat exchanger coil is higher than the second set temperature and lasts for a first set time, the defrosting structure is not started; when the temperature of the coil pipe of the heat exchanger is between 0 ℃ and a second set temperature and lasts for a first set time, starting the defrosting structure to enable the fan 11 of the defrosting structure to run at a medium speed; when the temperature of the heat exchanger coil is lower than 0 ℃ and lasts for a first set time, the defrosting structure is started, the fan 11 of the defrosting structure is enabled to run at a high speed, the temperature of the heat exchanger coil is obtained after a second set time, if the temperature of the heat exchanger coil is not increased, the heating function is started, and the fan 11 of the defrosting structure runs at a high speed and blows out hot air.
In one embodiment, the defrosting structure can electrically heat air to realize a heating function so as to blow hot air for defrosting. In the embodiment of the invention, the defrosting structure is used for sucking indoor air and blowing the air to the coil pipe of the heat exchanger of the outdoor unit, so that the heating function of the air conditioner can be started, and defrosting is realized by directly sucking indoor hot air and blowing hot air.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A defrosting structure characterized by comprising:
the fan is provided with an air inlet and an air outlet, and the air inlet is positioned indoors;
and one end of the air supply pipe is connected with the air outlet, and the other end of the air supply pipe is provided with an air supply outlet which faces the heat exchanger coil of the outdoor unit.
2. The defrosting structure of claim 1 wherein the blower includes a housing, an impeller, and a motor, the housing has a cavity therein, the side wall of one side of the housing has the air inlet, the motor is fixed to the side wall of the other side of the housing, the impeller is disposed in the cavity and is opposite to the air inlet, and an output shaft of the motor is fixedly connected to a center of the impeller.
3. The defrosting structure according to claim 1 or 2, wherein an air outlet connecting section is provided at a side of the fan, the end of the air outlet connecting section, which is away from the fan, is provided with the air outlet, and the air outlet connecting section is detachably connected to one end of the air supply pipe.
4. The defrosting structure according to claim 3, wherein a clamping column is arranged on the outer side wall of the end of the air outlet connecting section, a connector is arranged at one end of the air supply pipe, a clamping groove is arranged on the side wall of the connector, the end of the air outlet connecting section is inserted into the connector, and the clamping column is embedded into the clamping groove, so that the air outlet connecting section is detachably connected with one end of the air supply pipe.
5. An air conditioner comprising an indoor unit, an outdoor unit, and the defrosting structure according to any one of claims 1 to 4;
the fan is connected with the indoor unit, the other end of the air supply pipe extends into the outdoor unit, and the air supply opening faces the heat exchanger coil of the outdoor unit.
6. The air conditioner of claim 5, wherein the indoor unit includes a casing and a frame, the casing is disposed around the frame, the casing has an air inlet, the fan is disposed inside the casing and fixed to the frame, and the air inlet of the fan is disposed opposite to the air inlet.
7. The air conditioner according to claim 6, wherein an air outlet connecting section is provided on a side wall of the fan, the end of the air outlet connecting section, which is far away from the fan, is provided with the air outlet, and the air outlet connecting section extends out of the housing.
8. The air conditioner according to claim 7, wherein the indoor unit is a hanging unit, the casing has a side hole for passing a drain pipe therethrough, the side hole and the inlet hole are located on the same side wall of the casing, and an end of the outlet connecting section extends out of the side hole.
9. The air conditioner according to claim 6, wherein a plurality of anti-resonance members are provided on a side of the fan, a plurality of housing cover plates are provided on the frame, the plurality of housing cover plates correspond to the plurality of anti-resonance members one to one, and the housing cover plates are supported by the anti-resonance members.
10. The air conditioner according to claim 6, wherein said air inlet hole is provided with a filter net, and said filter net is integrally formed with said housing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110734326.7A CN113566465A (en) | 2021-06-30 | 2021-06-30 | Defrosting structure and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110734326.7A CN113566465A (en) | 2021-06-30 | 2021-06-30 | Defrosting structure and air conditioner |
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| CN113566465A true CN113566465A (en) | 2021-10-29 |
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| CN202110734326.7A Pending CN113566465A (en) | 2021-06-30 | 2021-06-30 | Defrosting structure and air conditioner |
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