CN115950051A - Air conditioner defrosting structure and defrosting method thereof - Google Patents
Air conditioner defrosting structure and defrosting method thereof Download PDFInfo
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- CN115950051A CN115950051A CN202310099281.XA CN202310099281A CN115950051A CN 115950051 A CN115950051 A CN 115950051A CN 202310099281 A CN202310099281 A CN 202310099281A CN 115950051 A CN115950051 A CN 115950051A
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- 238000010257 thawing Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004378 air conditioning Methods 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 42
- 238000005192 partition Methods 0.000 claims description 41
- 239000003507 refrigerant Substances 0.000 abstract description 4
- 239000003570 air Substances 0.000 description 79
- 230000008569 process Effects 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The application discloses air conditioner defrosting structure and defrosting method, and air conditioner defrosting structure includes outer machine of air conditioner, baffle, outdoor evaporimeter, fan, compressor, feed liquor pipe, connecting pipe, first valve, drain pipe, second valve, first branch pipe, third valve, auxiliary evaporator, second branch pipe, fourth valve, air outlet, electric putter, guide plate, opening, electric heater and baffle. The problem that the defrosting effect is low is defrosted to the air conditioner has been solved in this application, through set up first branch pipe and second branch pipe in the outer machine of air conditioner inside, can realize the circulation of refrigerant in the outer machine inside of air conditioner when the needs defrosting, utilize electric heater to the air heating and carry to outdoor evaporimeter department, realize high-efficient defrosting function, but utilize angle regulation's guide plate to carry out air conveyance, can avoid hot air velocity too fast and influence the defrosting effect, can get rid of the air conditioning of auxiliary evaporator simultaneously, further improve the defrosting performance.
Description
Technical Field
The application relates to the technical field of application of cabinet air conditioners, in particular to an air conditioner defrosting structure and a defrosting method thereof.
Background
An air conditioner, i.e. an air conditioner, is a device for manually adjusting and controlling parameters such as temperature, humidity, cleanliness, flow rate and the like of ambient air in a building/structure, most of the air conditioners utilize a refrigerant to evaporate or condense under the action of a compressor, so that the evaporation or condensation of ambient air is caused, and the purpose of changing temperature and humidity is achieved.
When the air conditioner is used in cold weather, because the evaporator of the outdoor unit is in a low-temperature state, the problem of frosting and icing is often caused by low temperature, the medium is difficult to effectively gasify, the temperature conduction efficiency is reduced, and the indoor heating effect is influenced.
Disclosure of Invention
The embodiment provides an air conditioner defrosting structure and a defrosting method thereof, which are used for solving the technical problem of low defrosting efficiency in the prior art.
According to one aspect of the present application, there is provided an air conditioning defrosting structure installed inside an air conditioner outdoor unit;
the defrosting structure of the air conditioner comprises a partition plate, an outdoor evaporator, a first branch pipe and a second branch pipe, wherein the partition plate is fixedly installed inside an outer machine of the air conditioner, the partition plate is fixedly installed inside the outer machine of the air conditioner, the outdoor evaporator is fixedly installed inside the partition plate, the outdoor evaporator is respectively and fixedly connected with a liquid outlet pipe and a connecting pipe, the connecting pipe is fixedly connected with the liquid inlet pipe through a compressor, the first branch pipe is fixedly connected with the liquid outlet pipe, the first branch pipe is fixedly connected with the second branch pipe through an auxiliary evaporator, and the second branch pipe is fixedly connected with the liquid inlet pipe; the air conditioner comprises an air conditioner body, a baffle plate, an electric heater, an outdoor evaporator and an air conditioner, wherein the baffle plate is arranged on one side of the air conditioner body, the air conditioner outer unit is connected with the baffle plate through an electric push rod, the baffle plate is rotatably connected with the inner wall of the baffle plate, the electric heater is fixedly arranged inside the baffle plate and correspondingly arranged on one side of the outdoor evaporator, and the electric heater is located between the baffle plates.
Furthermore, an auxiliary evaporator is fixedly mounted at the top of the air conditioner external unit, the auxiliary evaporator is respectively communicated with the first branch pipe and the second branch pipe, and the first branch pipe and the second branch pipe are located between the air conditioner external unit and the partition plate.
Furthermore, an air outlet is formed in one side of the air conditioner external unit, a fan is fixedly mounted on the other side of the air conditioner external unit, the fan is arranged corresponding to the air outlet, and the fan is correspondingly arranged on one side of the partition plate.
Further, the baffle is square structure, the baffle communicates with the air outlet of circular structure, the height of baffle is less than the diameter of air outlet.
Furthermore, the air conditioner external unit is respectively in through connection with a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe and the liquid outlet pipe are both communicated with an indoor condenser of the air conditioner internal unit.
Furthermore, the junction of the liquid inlet pipe and the second branch pipe is respectively provided with a first valve and a fourth valve, the first valve is fixedly connected with the liquid inlet pipe, and the fourth valve is fixedly connected with the second branch pipe.
Furthermore, a second valve and a third valve are respectively arranged at the joint of the liquid outlet pipe and the first branch pipe, the second valve is fixedly connected with the liquid outlet pipe, and the third valve is fixedly connected with the first branch pipe.
Furthermore, openings are symmetrically arranged at the upper end and the lower end of the partition board, electric push rods which are obliquely arranged are arranged in the openings, the electric push rods are rotatably connected with an air conditioner external unit, and the telescopic ends of the electric push rods are rotatably connected with the guide plate.
Furthermore, the quantity of guide plate is two, two the guide plate symmetric distribution, just the guide plate corresponds the setting in opening one side.
According to another aspect of the present application, there is provided a defrosting method for defrosting by applying the above defrosting structure, the defrosting method including the steps of:
s100, starting an air conditioner external unit, wherein when the air conditioner heats, an outdoor evaporator in the air conditioner external unit evaporates to absorb heat, so that a medium is heated, is compressed by a compressor and then is conveyed to an indoor condenser through a liquid inlet pipe, the medium is condensed to release heat, the medium is liquefied and then is conveyed to the outdoor evaporator again through a liquid outlet pipe to circulate, at the moment, a first valve and a second valve are opened, and a third valve and a fourth valve are closed;
s200, defrosting after frosting, when the outdoor evaporator is low in temperature and frosted, reversely flowing through a medium, serving as an outer machine condenser, closing a first valve and a second valve, opening a third valve and a fourth valve, conveying the medium to an auxiliary evaporator through a second branch pipe, returning to the outdoor evaporator through the first branch pipe, evaporating and releasing heat of the outdoor evaporator to defrost the outdoor evaporator, and stopping the indoor machine at the stop state;
s300, efficient defrosting is carried out, wherein when defrosting is carried out through an outdoor evaporator, the outdoor evaporator is heated through an electric heater, and a fan continues to work to enable hot air to contact the outdoor evaporator to play an efficient defrosting function;
and S400, restarting, after defrosting is finished, shortening the guide plate through an electric push rod to enable the guide plate to be attached to the inner wall of the partition plate, sealing the opening, closing the second valve and the third valve after the first valve and the fourth valve are opened, and enabling the outdoor evaporator to continue to absorb heat to work, so that the condenser of the indoor unit releases heat to play a heating role.
Through the above-mentioned embodiment of this application, through set up first branch pipe and second branch pipe outside the machine inside at the air conditioner, can realize the circulation of refrigerant in the outer machine inside of air conditioner when needs change the frost, avoid the indoor set to participate in the circulation and lead to indoor temperature step-down problem, utilize electric heater to the air heating and carry to outdoor evaporimeter department simultaneously, realize high-efficient defrosting function, it influences the result of use to improve the efficiency of changing the frost in order to avoid air conditioner downtime overlength, but utilize angle regulation's guide plate to carry out air transportation simultaneously, can avoid hot air flow velocity too fast and influence the effect of changing the frost, can get rid of the air conditioning of auxiliary evaporator simultaneously, avoid influencing the effect of changing the frost of outdoor evaporimeter, can further improve the defrosting performance.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is an overall perspective view of one embodiment of the present application;
FIG. 2 is a schematic front view of an embodiment of the present application;
FIG. 3 is a schematic diagram of a side view of an interior of a baffle according to an embodiment of the present application;
FIG. 4 is a schematic top view of an embodiment of the present application;
FIG. 5 is a schematic illustration of a compressor in side view according to an embodiment of the present application;
FIG. 6 is a schematic illustration of an embodiment of the present application at a baffle elevation;
FIG. 7 is a schematic illustration of a separator according to an embodiment of the present application from a side view;
FIG. 8 is an external side view of an embodiment of the present application.
In the figure: 1. the air conditioner comprises an air conditioner outdoor unit, 2, a partition plate, 3, an outdoor evaporator, 4, a fan, 5, a compressor, 6, a liquid inlet pipe, 7, a connecting pipe, 8, a first valve, 9, a liquid outlet pipe, 10, a second valve, 11, a first branch pipe, 12, a third valve, 13, an auxiliary evaporator, 14, a second branch pipe, 15, a fourth valve, 16, an air outlet, 17, an electric push rod, 18, a guide plate, 19, an opening, 20, an electric heater, 21 and a baffle plate.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 8, an embodiment of the present application provides an air conditioning defrosting structure, which is installed inside an air conditioner external unit 1;
the defrosting structure of the air conditioner comprises a partition plate 2, an outdoor evaporator 3, a first branch pipe 11 and a second branch pipe 14, wherein the partition plate 2 is fixedly installed inside an air conditioner outdoor unit 1, the partition plate 2 is fixedly installed inside the outdoor evaporator 3, the outdoor evaporator 3 is respectively and fixedly connected with a liquid outlet pipe 9 and a connecting pipe 7, the connecting pipe 7 is fixedly connected with a liquid inlet pipe 6 through a compressor 5, the first branch pipe 11 is fixedly connected with the liquid outlet pipe 9, the first branch pipe 11 is fixedly connected with the second branch pipe 14 through an auxiliary evaporator 13, and the second branch pipe 14 is fixedly connected with the liquid inlet pipe 6; an opening 19 is formed in one side of the partition board 2, the air conditioner outdoor unit 1 is connected with the air guide plates 18 through an electric push rod 17, the air guide plates 18 are rotatably connected with the inner wall of the partition board 2, an electric heater 20 is fixedly mounted inside the partition board 2, the electric heater 20 is correspondingly arranged on one side of the outdoor evaporator 3, and the electric heater 20 is located between the two air guide plates 18.
An auxiliary evaporator 13 is fixedly mounted at the top of the air conditioner outdoor unit 1, the auxiliary evaporator 13 is respectively communicated with a first branch pipe 11 and a second branch pipe 14, and the first branch pipe 11 and the second branch pipe 14 are located between the air conditioner outdoor unit 1 and the partition plate 2.
An air outlet 16 is formed in one side of the air conditioner external unit 1, a fan 4 is fixedly mounted on the other side of the air conditioner external unit 1, the fan 4 is arranged corresponding to the air outlet 16, and the fan 4 is correspondingly arranged on one side of the partition plate 2.
The air-conditioner is characterized in that the partition boards 2 are of a square structure, the openings 19 of the partition boards 2 are communicated with the air outlet 16 of a round structure, the distance between the two partition boards 2 is smaller than the diameter of the air outlet 16, the height position of the partition board 2 below is higher than the height position of the lower contour of the air outlet 16, and the height position of the partition board 2 above is lower than the height position of the upper contour of the air outlet 16. .
The air conditioner outdoor unit 1 is respectively connected with the liquid inlet pipe 6 and the liquid outlet pipe 9 in a penetrating manner, and the liquid inlet pipe 6 and the liquid outlet pipe 9 are communicated with an indoor condenser of the air conditioner indoor unit.
The liquid inlet pipe 6 is provided with a first valve 8 and a fourth valve 15 at the joint of the second branch pipe 14, the first valve 8 is fixedly connected with the liquid inlet pipe 6, and the fourth valve 15 is fixedly connected with the second branch pipe 14.
The connection part of the liquid outlet pipe 9 and the first branch pipe 11 is respectively provided with a second valve 10 and a third valve 12, the second valve 10 is fixedly connected with the liquid outlet pipe 9, and the third valve 12 is fixedly connected with the first branch pipe 11.
The air conditioner is characterized in that openings 19 which are symmetrically distributed are formed in the upper end and the lower end of each partition plate 2, electric push rods 17 which are obliquely distributed are arranged in the openings 19, the electric push rods 17 can penetrate through the openings 19 and extend into the space between the two partition plates 2, the electric push rods 17 are rotatably connected with an air conditioner outer unit 1, and the telescopic ends of the electric push rods 17 are rotatably connected with a guide plate 18.
The number of the guide plates 18 is two, the two guide plates 18 are symmetrically distributed, and the guide plates 18 are correspondingly arranged on one side of the opening 19 and are positioned in the area space between the two partition plates 2.
The embodiment of the application also provides a defrosting method, the air conditioner defrosting structure is applied to defrosting, and the defrosting method comprises the following steps:
s100, starting an air conditioner external unit 1, wherein when the air conditioner heats, an outdoor evaporator 3 in the air conditioner external unit 1 evaporates and absorbs heat, so that a medium is heated and is compressed by a compressor 5 and then is conveyed to an indoor condenser through a liquid inlet pipe 6, the medium is condensed and releases heat at the moment, the medium is liquefied and then is conveyed to the outdoor evaporator 3 again through a liquid outlet pipe 9 for circulation, at the moment, a first valve 8 and a second valve 10 are opened, and a third valve 12 and a fourth valve 15 are closed;
s200, defrosting after frosting, when the outdoor evaporator 3 is frosted at a low temperature, the medium reversely flows, the outdoor evaporator 3 serves as an outdoor unit condenser, the first valve 8 and the second valve 10 are closed, the third valve 12 and the fourth valve 15 are opened, the medium is conveyed to the auxiliary evaporator 13 through the second branch pipe 14 and flows back to the outdoor evaporator 3 through the first branch pipe 11, the outdoor evaporator 3 evaporates and releases heat to defrost the outdoor evaporator 3, and the indoor unit is in a shutdown state;
s300, efficient defrosting is carried out, wherein when defrosting is carried out through the outdoor evaporator 3, the electric heater 20 is used for heating, the fan 4 continues to work to enable hot air to contact the outdoor evaporator 3 to play a role of efficient defrosting, meanwhile, the electric push rod 17 extends to push the guide plate 18 to be opened, part of air enters between the air conditioner external unit 1 and the partition plate 2 through the guide plate 18 and the opening 19, cold air of the auxiliary evaporator 13 is blown out, the defrosting effect is prevented from being influenced by the low temperature of the auxiliary evaporator 13, meanwhile, the other part of hot air is blown out from between the guide plates 18, and the defrosting effect is prevented from being influenced by the too high wind speed;
and S400, restarting, after defrosting is finished, shortening the electric push rod 17 to enable the guide plate 18 to be attached to the inner wall of the partition plate 2, sealing the opening 19 at the moment, opening the first valve 8 and the fourth valve 15, closing the second valve 10 and the third valve 12, and continuing heat absorption work of the outdoor evaporator 3 at the moment to enable the condenser of the indoor unit to release heat to play a heating role.
The air conditioner defrosting structure and the defrosting method provided by the embodiment of the application have the advantages that:
1. the problem of low defrosting effect of air conditioner defrosting is solved, and the first branch pipe and the second branch pipe are arranged in the air conditioner external unit, so that the circulation of a refrigerant in the air conditioner external unit can be realized when defrosting is needed, and the problem that the indoor temperature is lowered due to the fact that an indoor unit participates in circulation is avoided;
2. the air is heated by the electric heater and is conveyed to the outdoor evaporator, so that the efficient defrosting function is realized, and the defrosting efficiency is improved to avoid the influence on the use effect caused by overlong shutdown time of the air conditioner;
3. but utilize angle regulation's guide plate to carry out air conveyance, can avoid hot air velocity too fast and influence the defrosting effect, can get rid of the air conditioning of supplementary evaporimeter simultaneously, avoid influencing the defrosting effect of outdoor evaporimeter, can further improve the defrosting performance.
It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An air conditioner defrosting structure is characterized in that: the air conditioner defrosting structure is arranged inside an air conditioner external unit (1);
the defrosting structure of the air conditioner comprises a partition plate (2), an outdoor evaporator (3), a first branch pipe (11) and a second branch pipe (14), wherein the partition plate (2) is fixedly installed inside an air conditioner outdoor unit (1), the partition plate (2) is fixedly installed inside the outdoor evaporator (3), the outdoor evaporator (3) is fixedly connected with a liquid outlet pipe (9) and a connecting pipe (7) respectively, the connecting pipe (7) is fixedly connected with a liquid inlet pipe (6) through a compressor (5), the first branch pipe (11) is fixedly connected with the liquid outlet pipe (9), the first branch pipe (11) is fixedly connected with the second branch pipe (14) through an auxiliary evaporator (13), and the second branch pipe (14) is fixedly connected with the liquid inlet pipe (6); an opening (19) is formed in one side of the partition plate (2), the air conditioner outdoor unit (1) is connected with the guide plates (18) through an electric push rod (17), the guide plates (18) are rotatably connected with the inner wall of the partition plate (2), an electric heater (20) is fixedly mounted inside the partition plate (2), the electric heater (20) is correspondingly arranged on one side of the outdoor evaporator (3), and the electric heater (20) is located between the guide plates (18).
2. The air-conditioning defrosting structure according to claim 1, characterized in that: the top of the air conditioner external unit (1) is fixedly provided with an auxiliary evaporator (13), the auxiliary evaporator (13) is respectively communicated with a first branch pipe (11) and a second branch pipe (14), and the first branch pipe (11) and the second branch pipe (14) are located between the air conditioner external unit (1) and the partition plate (2).
3. The air-conditioning defrosting structure according to claim 1, characterized in that: an air outlet (16) is formed in one side of the air conditioner external unit (1), a fan (4) is fixedly mounted on the other side of the air conditioner external unit (1), the fan (4) corresponds to the air outlet (16), and the fan (4) corresponds to the partition plate (2).
4. The air-conditioning defrosting structure according to claim 1, characterized in that: the air outlet device is characterized in that the partition plate (2) is of a square structure, the partition plate (2) is communicated with the air outlet (16) of a round structure, and the height of the partition plate (2) is smaller than the diameter of the air outlet (16).
5. The air-conditioning defrosting structure according to claim 1, characterized in that: the air conditioner outdoor unit (1) is respectively in through connection with the liquid inlet pipe (6) and the liquid outlet pipe (9), and the liquid inlet pipe (6) and the liquid outlet pipe (9) are communicated with an indoor condenser of the air conditioner indoor unit.
6. The air-conditioning defrosting structure according to claim 1, characterized in that: the liquid inlet pipe (6) and the second branch pipe (14) are respectively provided with a first valve (8) and a fourth valve (15), the first valve (8) is fixedly connected with the liquid inlet pipe (6), and the fourth valve (15) is fixedly connected with the second branch pipe (14).
7. The air-conditioning defrosting structure according to claim 1, characterized in that: drain pipe (9) and first branch pipe (11) junction are equipped with second valve (10) and third valve (12) respectively, second valve (10) and drain pipe (9) fixed connection, just third valve (12) and first branch pipe (11) fixed connection.
8. The air-conditioning defrosting structure according to claim 1, characterized in that: openings (19) which are symmetrically distributed are formed in the upper end and the lower end of the partition plate (2), electric push rods (17) which are obliquely distributed are arranged inside the openings (19), the electric push rods (17) are rotatably connected with an air conditioner outdoor unit (1), and the telescopic ends of the electric push rods (17) are rotatably connected with the guide plate (18).
9. The air-conditioning defrosting structure according to claim 1, characterized in that: the number of the guide plates (18) is two, the two guide plates (18) are symmetrically distributed, and the guide plates (18) are correspondingly arranged on one side of the opening (19).
10. A defrosting method is characterized in that: applying the defrosting structure of any one of claims 1 to 9 for defrosting, the defrosting method comprising the steps of:
s100, starting an air conditioner external unit (1), wherein when the air conditioner heats, an outdoor evaporator (3) in the air conditioner external unit (1) evaporates and absorbs heat, so that a medium is heated and is conveyed to an indoor condenser through a liquid inlet pipe (6) after being compressed by a compressor (5), the medium condenses and releases heat, the medium is liquefied and is conveyed to the outdoor evaporator (3) again through a liquid outlet pipe (9) for circulation, at the moment, a first valve (8) and a second valve (10) are opened, and a third valve (12) and a fourth valve (15) are closed;
s200, defrosting is carried out after frosting, when the outdoor evaporator (3) is frosted at a low temperature, the medium reversely flows, the outdoor evaporator (3) serves as an outdoor condenser, the first valve (8) and the second valve (10) are closed, the third valve (12) and the fourth valve (15) are opened, the medium is conveyed to the auxiliary evaporator (13) through the second branch pipe (14) and flows back to the outdoor evaporator (3) through the first branch pipe (11), the outdoor evaporator (3) is gasified, evaporated and released heat to carry out defrosting treatment on the indoor unit of the outdoor evaporator (3), and the indoor unit is in a shutdown state;
s300, efficient defrosting is carried out, wherein when defrosting is carried out through the outdoor evaporator (3), the electric heater (20) is used for heating, the fan (4) continues to work to enable hot air to contact the outdoor evaporator (3) to play a role of efficient defrosting, meanwhile, the electric push rod (17) is used for extending to push the guide plate (18) to be opened, part of air enters the space between the air conditioner outdoor unit (1) and the partition plate (2) through the guide plate (18) and the opening (19), cold air of the auxiliary evaporator (13) is blown out, the effect of defrosting caused by the low temperature of the auxiliary evaporator (13) is avoided, meanwhile, the other part of hot air is blown out from the space between the guide plate (18), and the effect of defrosting caused by the too fast air speed is avoided;
s400, restarting is carried out, after defrosting is finished, the electric push rod (17) is shortened to enable the guide plate (18) to be attached to the inner wall of the partition plate (2), the opening (19) is sealed, the second valve (10) and the third valve (12) are closed after the first valve (8) and the fourth valve (15) are opened, the outdoor evaporator (3) continues to absorb heat, and the indoor unit condenser releases heat to play a heating role.
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| CN111256290A (en) * | 2020-01-20 | 2020-06-09 | 珠海格力电器股份有限公司 | Heat pump air conditioner |
| WO2022068281A1 (en) * | 2020-11-30 | 2022-04-07 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method therefor, and storage medium and control apparatus |
| CN114777214A (en) * | 2022-04-12 | 2022-07-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Heat pump air conditioning system and control method thereof |
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