CN117760012A - Auxiliary heating device, air conditioner and control method of air conditioner - Google Patents

Abstract

The invention discloses an auxiliary heating device, an air conditioner and a control method thereof, wherein the auxiliary heating device comprises: a support frame, a fan assembly, and a heating assembly; the fan assembly comprises a fan and a bracket, wherein the fan is arranged on the bracket, and the bracket is arranged on the support frame along the vertical direction of the support frame; the heating assembly comprises a plurality of heating plates, wherein the heating plates are arranged in the supporting frame along the vertical direction of the supporting frame and are connected with the supporting frame through rotating shafts, and the heating plates are distributed along the horizontal direction of the supporting frame; when the heating plates horizontally rotate to be parallel to the supporting frame, a plurality of the heating plates are jointly formed with a blocking surface for closing the supporting frame. The evaporator is blocked by the blocking surface, even if the evaporator is refrigerating, the fan assembly does not need to stop, the fan assembly can send out the heat released by the heating plate to form hot air, and the hot air can be simultaneously sent out when the defrosting mode is realized.

Description

Auxiliary heating device, air conditioner and control method of air conditioner

Technical Field

The invention relates to the technical field of air conditioners, in particular to an auxiliary heating device, an air conditioner and a control method thereof.

Background

At present, an air conditioner becomes one of necessary household appliances when people pursue high-quality life, one of the intelligent modes of the air conditioner is a defrosting mode, when the indoor unit of the air conditioner is in a heating mode, the outdoor environment humidity is high, frost is formed on the heat exchanger of the outdoor unit of the air conditioner, and if the frost reaches a warning value, the defrosting mode is performed when the heat exchanger of the outdoor unit is heated, the evaporator of the indoor unit is used for refrigerating, and a fan system of the indoor unit is required to be stopped, so that cold air is prevented from being blown out. The indoor environment of the process is only heated by the electric heater, no hot air is sent out, the environment temperature is fast to drop, and the comfort is affected. And after the defrosting mode is finished, more time and electricity are needed for adjusting and improving the indoor environment temperature.

Disclosure of Invention

The embodiment of the invention provides an auxiliary heating device, an air conditioner and a control method thereof, and aims to solve the problem that hot air cannot be blown out due to the fact that an evaporator is required to be stopped when in a defrosting mode of the existing air conditioner.

In a first aspect, an embodiment of the present invention provides an auxiliary thermal device, including:

a support frame;

the fan assembly comprises a fan and a bracket, wherein the fan is arranged on the bracket, and the bracket is arranged on the support frame along the vertical direction of the support frame;

the heating assembly comprises a plurality of heating plates, wherein the heating plates are arranged in the supporting frame along the vertical direction of the supporting frame and are connected with the supporting frame through rotating shafts, and the heating plates are distributed along the horizontal direction of the supporting frame;

when the heating plates horizontally rotate to be parallel to the supporting frame, a plurality of the heating plates are jointly formed with a blocking surface for closing the supporting frame.

In the auxiliary heating device provided by the embodiment of the invention, the positions, corresponding to the brackets, in the supporting frames are kept away, and the heating plates are distributed on two sides of the brackets.

In the auxiliary heating device provided by the embodiment of the invention, the heating assembly further comprises a connecting rod and a driving piece, wherein the connecting rod is connected with the heating plates, and the driving piece is used for driving one of the heating plates to rotate so as to drive the heating plates to horizontally rotate through the connecting rod.

In the auxiliary heating device provided by the embodiment of the invention, on the cross section of the heating plate, the head and the tail are formed at two ends of the heating plate, and the head gradually narrows towards the tail.

In the auxiliary heating device provided by the embodiment of the invention, when the heating plate horizontally rotates to be vertical to the supporting frame, the tail parts of the heating plates distributed on the left side of the bracket are deflected to the right, and the tail parts of the heating plates distributed on the right side of the bracket are deflected to the left.

In the auxiliary heating device provided by the embodiment of the invention, the deflection angle of the tail part of the heating plate far away from the bracket is larger than the deflection angle of the tail part of the heating plate close to the bracket.

In the auxiliary heating device provided by the embodiment of the invention, the heating assembly comprises: the middle heating plate group is arranged in the middle of the supporting frame, the third heating plate group and the fourth heating plate group are symmetrically distributed on the left side and the right side of the middle heating plate group, and deflection angles of the heating plates of the third heating plate group and the fourth heating plate group are beta; the second heating plate group and the fifth heating plate group are symmetrically distributed relative to the middle heating plate group, the second heating plate group is arranged on the left side of the third heating plate group, the fifth heating plate group is arranged on the right side of the fourth heating plate group, and deflection angles of the heating plates of the second heating plate group and the fifth heating plate group are alpha; wherein α is greater than β.

In a second aspect, an embodiment of the present invention further provides an air conditioner, including: the auxiliary heating device comprises a shell, an auxiliary heating device and an evaporator, wherein the auxiliary heating device is the auxiliary heating device, the auxiliary heating device is arranged in the shell, and the evaporator is arranged on one side of the supporting frame, which is opposite to the fan assembly.

In the air conditioner provided by the embodiment of the invention, the shell comprises a front panel positioned at the front side of the fan assembly, the front panel is provided with an upper air port and a lower air port, the fan assembly comprises a first fan and a second fan, the first fan is arranged on the bracket corresponding to the upper air port, and the second fan is arranged on the bracket corresponding to the lower air port.

In a third aspect, an embodiment of the present invention provides a control method for an air conditioner, which is applied to the air conditioner, where the method includes:

if the air conditioner is detected to enter a defrosting mode, controlling the heating plate to rotate so as to enable the heating plate to close the supporting frame;

one of the first fan and the second fan is controlled to stop, and the other fan is controlled to be started.

The embodiment of the invention provides an auxiliary heating device, an air conditioner and a control method thereof, wherein the auxiliary heating device comprises: the air conditioner comprises a supporting frame, a fan assembly and a heating assembly, wherein the fan assembly is arranged on the supporting frame, the heating assembly comprises a plurality of heating plates, the heating plates are vertically arranged in the supporting frame, the plurality of heating plates are distributed along the horizontal direction of the supporting frame, the heating plates are connected with a rotating shaft of the supporting frame, the heating plates can horizontally rotate relative to the supporting frame, when the air conditioner enters a defrosting mode, the heating plates horizontally rotate to be parallel to the supporting frame, a blocking surface is formed by the plurality of heating plates together so as to block an evaporator, even if the evaporator is refrigerating, the fan assembly does not need to stop, the fan assembly can send out heat released by the heating plates to form hot air, so that the hot air can be simultaneously sent in the defrosting mode, the indoor temperature is prevented from suddenly falling, electricity is saved, and the comfort is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded schematic view of an air conditioner according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an opened state of an auxiliary heating device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a heating plate of an auxiliary heating device according to an embodiment of the present invention;

FIG. 4 is a schematic view of a closed state of an auxiliary heating device according to an embodiment of the present invention;

FIG. 5 is an exploded view of an auxiliary heating apparatus according to an embodiment of the present invention in an open state;

fig. 6 is an enlarged view of a portion a of fig. 5;

FIG. 7 is a schematic diagram of an opened state of an auxiliary heating device according to an embodiment of the present invention;

fig. 8 is an enlarged view of a portion B of fig. 7;

FIG. 9 is an exploded view of a closed state of an auxiliary thermal device according to an embodiment of the present invention;

fig. 10 is an enlarged view of a portion C of fig. 9;

FIG. 11 is a schematic front view of a conventional air conditioner;

fig. 12 is a perspective view of a conventional air conditioner;

FIG. 13 is a schematic diagram of a cross section of a heating plate of an auxiliary thermal device provided by an embodiment of the present invention;

FIG. 14 is another schematic illustration of a cross section of a heating plate of an auxiliary thermal device provided by an embodiment of the present invention;

fig. 15 is a schematic view of an air conditioner according to an embodiment of the present invention;

fig. 16 is a schematic front view of an air conditioner according to an embodiment of the present invention;

FIG. 17 is a schematic diagram of an airflow direction of an air conditioner according to an embodiment of the present invention;

fig. 18 is a flowchart illustrating steps of a control method of an air conditioner according to an embodiment of the present invention;

fig. 19 is a schematic logic diagram of a control method of an air conditioner according to an embodiment of the present invention;

description of the drawings:

100. an auxiliary heating device; 10. a support frame; 20. a fan assembly; 21. a bracket; 22. a first fan; 23. a second fan; 30. a heating assembly; 31. a heating plate; 311. an upper rotating shaft; 312. a lower rotating shaft; 313. closing the shaft; 31a, a head; 31b, tail; 301. driving the heating plate; 302. a second heating plate group; 303. a third heating plate group; 304. a fourth heating plate group; 305. a fifth heating plate group; 306. a middle heating plate group; 32. a connecting rod; 321. a tooth mouth; 33. a driving member; 200. a housing; 210. a front panel; 211. an upper air port; 212. a lower tuyere; 220. a rear panel; 230. a left side plate; 240. a right side plate; 250. a chassis; 300. an evaporator; 400. an electrical box.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

As used in this specification and the appended claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".

Referring to fig. 1-17, an embodiment of the present invention provides an auxiliary thermal device 100, comprising: a support frame 10, a fan assembly 20, and a heating assembly 30; the fan assembly 20 comprises a fan and a bracket 21, wherein the fan is arranged on the bracket 21, and the bracket 21 is arranged on the support frame 10 along the vertical direction of the support frame 10; the heating assembly 30 comprises a plurality of heating plates 31, wherein the heating plates 31 are arranged in the supporting frame 10 along the vertical direction of the supporting frame 10 and are connected with the supporting frame 10 in a rotating shaft manner, and the plurality of heating plates 31 are distributed along the horizontal direction of the supporting frame 10; wherein, when the heating plate 31 is horizontally rotated to be parallel to the support frame 10, a plurality of the heating plates 31 are formed together with a blocking surface closing the support frame 10.

Referring to fig. 1 and 2, in particular, the support frame 10 is generally rectangular, the blower assembly 20 is mounted on the front side of the support frame 10, and the evaporator 300 is mounted on the rear side of the support frame 10. The fan comprises a fan blade and a motor, the fan blade is arranged on an output shaft of the motor and driven to rotate by the motor, the motor is arranged on a bracket 21, the bracket 21 is arranged on the supporting frame 10, namely the fan is arranged on the supporting frame 10 through the bracket 21. Referring to fig. 3, the heating plate 31 is in a long bar shape, the width of the heating plate 31 is 30mm, oil filled in the inside of the heating plate 31 is filled with oil, upper rotating shafts 311 and lower rotating shafts 312 are provided at both ends of the heating plate 31, shaft holes are provided at both upper and lower sides of the support frame 10, and the upper rotating shafts 311 and the lower rotating shafts 312 are respectively connected to the shaft holes of both upper and lower sides of the support frame 10, so that the heating plate 31 can horizontally rotate relative to the support frame 10.

The longitudinal direction of the heating plates 31 is aligned with the longitudinal direction of the support frame 10, and the plurality of heating plates 31 are spaced apart along the short side direction of the support frame 10. The number of the heating plates 31 is directly arranged to be consistent with the air outlet direction of the fins of the evaporator 300, so that the air quantity can be increased, and the temperature rise of a fan motor can be improved. With continued reference to fig. 2, when the heating plates 31 are perpendicular to the support frame 10, there is a gap between adjacent heating plates 31, and the evaporator 300 located at the rear side of the support frame 10 can flow out the heat exchanged air to the front side of the support frame 10 through the gap, and then send out the air flow by the blower. Referring to fig. 4, when the air conditioner is defrosting, the evaporator 300 is cooled, the heating plates 31 are horizontally rotated, and when the heating plates 31 are parallel to the support frame 10, there is no gap between adjacent heating plates 31, thus closing the entire support frame 10, a plurality of heating plates 31 together form a blocking surface, and the closing blocks the evaporator 300, thereby blocking the outflow of cold air heat-exchanged by the evaporator 300. Thus, the blower fan at the front side of the support frame 10 can be kept running without stopping, and the heat released by the heating plate 31 is sent out by the blower fan, so that hot air is discharged during defrosting.

Through this embodiment, the evaporator 300 is blocked by using the horizontal rotation of the heating plate 31 to close the supporting frame 10 to form a blocking surface, so that hot air can be simultaneously supplied in a defrosting mode, the indoor temperature is prevented from suddenly dropping, electricity is saved, and the comfort is improved.

Referring to fig. 5-10, in an embodiment, the heating assembly 30 further includes a connecting rod 32 and a driving member 33, the connecting rod 32 is connected to the plurality of heating plates 31, and the driving member 33 is used for driving one of the heating plates 31 to rotate so as to drive the plurality of heating plates 31 to horizontally rotate through the connecting rod 32. Specifically, the connecting rods 32 are disposed at the lower ends of the heating plates 31, the connecting rods 32 are transversely disposed in the supporting frame 10, a plurality of teeth 321 are disposed on the connecting rods 32 at intervals, the lower ends of the heating plates 31 are provided with sealing shafts 313, and the sealing shafts 313 of each heating plate 31 are correspondingly embedded with the teeth 321 on the connecting rods 32 one by one, so that the connecting rods 32 and the heating plates 31 form linkage. The driving member 33 is a motor, and an output shaft of the motor is a flat shaft. The heating plate 31 positioned at the outermost side of the supporting frame 10 is a driving heating plate 301, and a flat hole is arranged at the lower end of the driving heating plate 301 and is matched with the flat shaft. The outermost driving heating plate 301 is driven to rotate by a motor, and the driving heating plate 301 is connected to the other heating plates 31 by the connecting rod 32, so that the other heating plates 31 are driven to rotate together. Therefore, the structure that one driving piece 33 drives a plurality of heating plates 31 to synchronously rotate is realized, the structure is simple, and the cost is low.

The existing air conditioner indoor unit is an axial flow fan system, the evaporator 300 is in a flat plate type, the electric heater is transversely fixed on the evaporator 300, the motor and the fan blades are assembled in front of the evaporator 300 and the electric heater, and when a heating mode is carried out, the evaporator 300 and the electric heater release heat, and as the motor is close to the electric heater and the evaporator 300, the temperature of the motor is affected to rise. In order to ensure the service life of the motor and avoid the overload damage of the temperature of the motor, the rotating speed of the motor cannot be regulated to be extremely high, thereby affecting certain air quantity and heat exchange capacity.

Specifically, referring to fig. 11 and 12, an electric heater, a motor and fan blades are assembled on the indoor unit, the electric heater contains an electric heating element, when the electric heater is electrified, heat is emitted, the electric heater is horizontally placed at the front end of the evaporator 300, the placement can block a certain surface of the evaporator 300, and when heat exchange is performed, the heat exchange efficiency and the air quantity are affected by the block, so that the performance is reduced. In the figure, when the motor and the fan blades on the motor support 21 are arranged at the front end of the electric heater, and the air conditioner heating mode or the electric heating auxiliary heating mode, the evaporator 300 or the electric heater emits heat, and as the heat is close to the motor, heat radiation is transmitted to the motor, the temperature of the motor is increased, the service life of the motor is influenced and even the motor is burnt out after overload, so that the situation that the rotating speed of the motor is reduced is avoided, and the air quantity and the performance are sacrificed.

In order to solve the problem of overload temperature rise of the motor of the fan, in one embodiment, the support frame 10 is kept away from the space corresponding to the support 21, and a plurality of heating plates 31 are distributed on two sides of the support 21. Specifically, with continued reference to fig. 1, during assembly, the evaporator 300 is located at the rear side of the support frame 10, the heating plate 31 radiates heat by adopting the electric oil-filled radiator principle, the heating plate 31 is in a sheet-shaped vertical form, is placed on the surface of the evaporator 300, is distributed at two ends, and is positioned at the middle of the support 21 near the fan assembly 20, and the heating plate 31 is not placed, so that the heat radiation is transmitted to the motor during the heating mode, and the overload of the temperature rise of the motor is caused. That is, the bracket 21 of the fan assembly 20 is located in the middle of the supporting frame 10, the heating plate 31 is not placed in the middle of the supporting frame 10, that is, a clearance is formed in the middle position, and the heating plates 31 are respectively arranged on the left side and the right side, so that no heat radiation is generated due to the fact that the heating plate 31 is not arranged in the middle, the heat radiation is not transmitted to the motor of the fan, the temperature rise of the motor is avoided, the service life of the motor is prolonged, and the air quantity can be increased.

Referring to fig. 13, in an embodiment, in a cross section of the heating plate 31, both ends of the heating plate 31 are formed with a head portion 31a and a tail portion 31b, and the head portion 31a is gradually narrowed toward the tail portion 31 b. Specifically, the cross section of the heating plate 31 has a rounded head 31a and a rounded tail 31b, which is shaped like a tear drop, and has a small wind resistance coefficient, which allows smooth passage of air flow, avoids air turbulence, and contributes to an improvement in the air volume by reducing the number of baffles of the evaporator 300. The bevel angle is preferably 9 deg. from the vertical, although it will be appreciated that other angles are possible.

With continued reference to fig. 13, in one embodiment, when the heating plate 31 is horizontally rotated to be perpendicular to the support frame 10, the tail portions 31b of the heating plates 31 distributed on the left side of the supporter 21 are deflected rightward, and the tail portions 31b of the heating plates 31 distributed on the right side of the supporter 21 are deflected leftward. Specifically, when the heating plates 31 horizontally rotate to be vertical to the supporting frame 10, a gap for heat exchange gas to flow out is provided between the adjacent heating plates 31, in order to improve the flow rate of the gas and assist the ventilation, the tail 31b of the heating plate 31 is deflected towards the middle fan, the tail end of the heating plate 31 has a sickle-like feature, the wind direction is changed, the gas flow is concentrated to the fan, and is carried out by the fan, so that the heat exchange efficiency is improved maximally. Specifically, the tail 31b of the heating plate 31 located at the left side of the fan is deflected to the right, and the tail 31b of the heating plate 31 located at the right side of the fan is deflected to the left, so that the wind direction of the air outlet at the right and left sides is changed, the air outlet direction faces the fan, the air flow is accelerated, and the heat exchange efficiency is improved.

With continued reference to fig. 13, in this embodiment, the deflection angle of the tail 31b of the heating plate 31 away from the bracket 21 is greater than the deflection angle of the tail 31b of the heating plate 31 near the bracket 21. Specifically, since the distance between each heating plate 31 and the middle fan is different, the tail 31b of the heating plate 31 farther from the middle fan requires a larger deflection angle to change the direction of the air-out toward the fan. Therefore, in this embodiment, the smaller the deflection angle of the tail portion 31b of the heating plate 31 closer to the middle fan, the larger the deflection angle of the tail portion 31b of the heating plate 31 farther from the middle fan, so as to ensure that the air outlet direction of the air channel between the heating plates 31 at each position is concentrated to the fan, thereby realizing accurate air outlet and further improving the heat exchange efficiency.

Referring to fig. 14, in a specific embodiment, the heating assembly 30 includes: a second heating plate group 302, a third heating plate group 303, a fourth heating plate group 304, a fifth heating plate group 305 and an intermediate heating plate group 306, wherein the intermediate heating plate group 306 is arranged in the middle of the supporting frame 10, the third heating plate group 303 and the fourth heating plate group 304 are symmetrically distributed on the left side and the right side of the intermediate heating plate group 306, and the deflection angles of the heating plates 31 of the third heating plate group 303 and the fourth heating plate group 304 are beta; the second heating plate group 302 and the fifth heating plate group 305 are symmetrically distributed relative to the middle heating plate group 306, the second heating plate group 302 is arranged at the left side of the third heating plate group 303, the fifth heating plate group 305 is arranged at the right side of the fourth heating plate group 304, and the deflection angle of the heating plates 31 of the second heating plate group 302 and the fifth heating plate group 305 is alpha; wherein α is greater than β. Specifically, the number of heating plates 31 is plural, and the number of heating plates 31 of the present embodiment is 13, wherein, in terms of going from left to right, the first heating plate 31 is the driving heating plate 301, the second and third heating plates 31 constitute the second heating plate group 302, the fourth and fifth heating plates 31 constitute the third heating plate group 303, the sixth, seventh, eighth and ninth heating plates 31 constitute the intermediate heating plate group 306, the tenth and eleventh heating plates 31 constitute the fourth heating plate group 304, and the twelfth and thirteenth heating plates 31 constitute the fifth heating plate group 305. It will be understood that the number of heating plates 31 may be other values, and each heating plate 31 group may be composed of other numbers of heating plates 31, and those skilled in the art will set the number according to actual needs. The third heating plate group 303 and the fourth heating plate group 304 are symmetrically distributed, and the number of heating plates 31 of the third heating plate group 303 is the same as the number of heating plates 31 of the fourth heating plate group 304. The second heating plate group 302 and the fifth heating plate group 305 are also symmetrically distributed. The number of heating plates 31 of the second heating plate group 302 is the same as the number of heating plates 31 of the fifth heating plate 31. The third heating plate group 303 and the fourth heating plate group 304 are located on the left and right sides of the middle heating plate group 306, and the second heating plate group 302 and the fifth heating plate group 305 are located on the outermost left and right sides. The deflection angle of the heating plate 31 is an included angle formed between a tangent line of the outer side edge of the head portion 31a and a tangent line of the outer side edge of the tail portion 31 b. The deflection angle of the heating plates 31 in the third heating plate group 303 and the fourth heating plate group 304 is beta, preferably beta is 6 deg., although it will be appreciated that other angles are possible. The deflection angle of the heating plates 31 of the second heating plate group 302 and the fifth heating plate group 305 is alpha, preferably alpha is 8 deg., although it will be appreciated that other angles are possible. Where α is required to be greater than β, because the two bilaterally symmetrical second and fifth heater plate sets 302 and 305 are further outward, a greater deflection angle is required to ensure that the air-out direction is toward the fan. Through the structural arrangement of this embodiment, realize the air-out efficiency of maximize.

Referring to fig. 1 and 15, an embodiment of the present invention further provides an air conditioner, including: the auxiliary heating device 100 is the auxiliary heating device 100 in the embodiment, the auxiliary heating device 100 is installed in the housing 200, and the evaporator 300 is installed on the side of the support frame 10 facing away from the fan assembly 20. The heat assist device 100 is described in detail in the above embodiments, and is not described herein for brevity.

In the present embodiment, the support frame 10 is transversely disposed in the housing 200 to divide the housing 200 into a front end cavity in which the fan assembly 20 is located and a rear end cavity in which the evaporator 300 is located. When the air conditioner is defrosted, the rear end cavity is the refrigeration cavity, the front end cavity is the heating cavity, and the heating plate 31 rotates closed supporting frame 10 for the front end cavity is isolated with the rear end cavity, and the cold air of rear end cavity can't enter into in the front end cavity, and the heat that the heating plate 31 in the front end cavity radiated can form hot-blast the sending through fan assembly 20.

Referring to fig. 16 and 17, in an embodiment, the housing 200 includes a front panel 210 disposed at a front side of the blower assembly 20, the front panel 210 is provided with an upper air port 211 and a lower air port 212, the blower assembly 20 includes a first blower 22 and a second blower 23, the first blower 22 is mounted on the support 21 corresponding to the upper air port 211, and the second blower 23 is mounted on the support 21 corresponding to the lower air port 212. Specifically, the casing 200 includes a front panel 210, a rear panel 220, a left side plate 230, a right side plate 240, and a chassis 250, and the casing 200 is further provided therein with an electrical box 400, and the front panel 210 is provided with an upper air port 211 and a lower air port 212, and the upper air port 211 and the lower air port 212 are disposed at an upper-lower interval. The fan assembly 20 has two fans, a first fan 22 and a second fan 23, respectively, and the first fan 22 and the second fan 23 are installed on the bracket 21 at an upper and lower interval. The first fan 22 faces the upper air port 211, the second fan 23 faces the lower air port 212, that is, the first fan 22 is an upper fan, and the second fan 23 is a lower fan. During defrosting mode, the heating plate 31 seals the evaporator 300 to form a refrigerating cavity at the rear end and a heating cavity at the front end, the heating cavity at the front end performs heat exchange by using the heating plate 31, the upper fan is closed in the air return process, the lower fan is started, indoor air enters through the upper air port 211 and is blown out from the lower air port 212 to form air circulation, hot air is sent out, the indoor temperature suddenly drops, the fan is not stopped, and the user comfort experience is improved. The indoor temperature is reduced little, and after the defrosting mode is restarted, high-power heating is not needed, so that electricity saving is realized.

Referring to fig. 18, an embodiment of the present invention further provides a control method of an air conditioner, which is applied to the air conditioner of the above embodiment, and the method includes the steps of: S1-S2.

S1, if the air conditioner is detected to enter a defrosting mode, controlling a heating plate to rotate so that the heating plate closes a supporting frame;

s2, controlling one of the first fan and the second fan to stop, and controlling the other fan to start.

In this embodiment, the air conditioner continuously detects the operation mode, when the operation mode of air conditioner is defrosting mode, at first control the hot plate and rotate, the hot plate seals the evaporimeter, the refrigerating chamber of formation rear end and the heating chamber of front end, the heating chamber of front end utilizes the hot plate to carry out the heat exchange, the return air in-process closes the fan, start down the fan, indoor air gets into through last wind gap, blow out from the wind gap, form the circulation of air, send out hot-blast, indoor temperature suddenly drops has been avoided, the fan is not stopped, user's travelling comfort experience has been improved. The indoor temperature is reduced little, and after the defrosting mode is restarted, high-power heating is not needed, so that electricity saving is realized. It will be understood, of course, that in other embodiments, the lower blower may be turned off and the upper blower may be turned on.

Referring to fig. 19, in order to further explain the control method of the air conditioner of the present embodiment, the following description will be made by the operation of the air conditioner in the defrosting mode.

When the air conditioner is detected to enter a defrosting mode, firstly, a motor of the heating assembly controls and drives the heating plates to rotate, and all the heating plates are driven by the connecting rods to horizontally rotate to close the supporting frame, so that the evaporator is separated; then, the upper fan is controlled to stop, and the lower fan keeps running, specifically, the motor of the upper fan, namely the upper motor, is controlled to stop running, and the motor of the lower fan, namely the lower motor, is controlled to continue running; then entering a defrosting mode, starting defrosting, heating and defrosting by a heat exchanger of the outdoor unit, refrigerating by an evaporator of the indoor unit, and continuously sending hot air to the indoor by the air conditioner due to the separation of the evaporator in the defrosting process, so that the indoor temperature is reduced; and finally, defrosting is finished, a motor of the heating assembly controls and drives the heating plates to rotate, all the heating plates are driven by the connecting rods to horizontally rotate to open the supporting frame, the operation of the upper fan is recovered, and the defrosting mode is finished.

While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims (10)

1. An auxiliary thermal device, comprising:

a support frame;

the fan assembly comprises a fan and a bracket, wherein the fan is arranged on the bracket, and the bracket is arranged on the support frame along the vertical direction of the support frame;

the heating assembly comprises a plurality of heating plates, wherein the heating plates are arranged in the supporting frame along the vertical direction of the supporting frame and are connected with the supporting frame through rotating shafts, and the heating plates are distributed along the horizontal direction of the supporting frame;

when the heating plates horizontally rotate to be parallel to the supporting frame, a plurality of the heating plates are jointly formed with a blocking surface for closing the supporting frame.

2. The auxiliary heating apparatus according to claim 1, wherein the support frame is kept free from air at a position corresponding to the bracket, and a plurality of the heating plates are distributed on both sides of the bracket.

3. The auxiliary heating apparatus as defined in claim 1, wherein said heating assembly further comprises a link connected to a plurality of said heating plates and a driving member for driving one of said heating plates to rotate so as to horizontally rotate a plurality of said heating plates via said link.

4. A secondary heating apparatus as claimed in any one of claims 1 to 3, wherein, in cross section of the heating plate, there are formed a head portion and a tail portion at both ends of the heating plate, the head portion tapering towards the tail portion.

5. The auxiliary heating apparatus according to claim 4, wherein the tail portions of the heating plates distributed on the left side of the supporter are deflected rightward and the tail portions of the heating plates distributed on the right side of the supporter are deflected leftward when the heating plates are horizontally rotated to be perpendicular to the supporting frame.

6. The auxiliary thermal device of claim 5 wherein the deflection angle of the tail of the heating plate away from the support is greater than the deflection angle of the tail of the heating plate closer to the support.

7. The auxiliary thermal device of claim 6 wherein the heating assembly comprises: the middle heating plate group is arranged in the middle of the supporting frame, the third heating plate group and the fourth heating plate group are symmetrically distributed on the left side and the right side of the middle heating plate group, and deflection angles of the heating plates of the third heating plate group and the fourth heating plate group are beta; the second heating plate group and the fifth heating plate group are symmetrically distributed relative to the middle heating plate group, the second heating plate group is arranged on the left side of the third heating plate group, the fifth heating plate group is arranged on the right side of the fourth heating plate group, and deflection angles of the heating plates of the second heating plate group and the fifth heating plate group are alpha; wherein α is greater than β.

8. An air conditioner, comprising: a housing and an auxiliary thermal device as claimed in any one of claims 1 to 7 mounted in the housing and an evaporator mounted on the side of the support frame facing away from the fan assembly.

9. The air conditioner of claim 8, wherein the housing includes a front panel positioned at a front side of the fan assembly, the front panel having an upper air port and a lower air port, the fan assembly including a first fan and a second fan, the first fan being mounted on the bracket corresponding to the upper air port, the second fan being mounted on the bracket corresponding to the lower air port.

10. A control method of an air conditioner, applied to the air conditioner of claim 9, the method comprising:

if the air conditioner is detected to enter a defrosting mode, controlling the heating plate to rotate so as to enable the heating plate to close the supporting frame;

one of the first fan and the second fan is controlled to stop, and the other fan is controlled to be started.