CN107726447B

CN107726447B - Air conditioner

Info

Publication number: CN107726447B
Application number: CN201710785870.8A
Authority: CN
Inventors: 陈英强; 朱芳勇; 陈志伟; 吴俊鸿; 彭光前; 李建建; 赵万东; 张兴钰; 向新贤
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2017-09-04
Filing date: 2017-09-04
Publication date: 2023-09-12
Anticipated expiration: 2037-09-04
Also published as: CN107726447A

Abstract

The invention provides an air conditioner, which comprises an indoor unit (101), an outdoor unit (102) and more than two evaporators, wherein the more than two evaporators are arranged inside the outdoor unit (102), and the outdoor unit (101) is connected with the indoor unit (101) through an air flow connecting pipeline so as to send air flow subjected to heat exchange of the evaporators into the indoor unit (101) for indoor heat exchange. Compared with the mode that the evaporator in the prior art is positioned in the indoor unit, the invention effectively transfers the evaporator from the indoor unit to the outdoor unit, avoids the leakage of the refrigerant in the room, solves the problem that the refrigerant of the air conditioner enters the room after being leaked, and greatly reduces the potential safety hazard caused by the leakage of the refrigerant; the occupied space of the evaporator in the indoor unit is effectively reduced, so that the indoor unit can be made smaller, the occupied space is reduced, and the indoor is more attractive.

Description

Air conditioner

Technical Field

The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioner.

Background

The domestic air conditioner in the existing market at present comprises an indoor unit and an outdoor unit, wherein the indoor unit is connected with the outdoor unit through a connecting pipe, and once refrigerant leaks, the problems of safety, environmental protection and health exist. In addition, because the existing evaporator of the air conditioner indoor unit is arranged indoors, the joints and welding spots are many, so that the risk of refrigerant leakage indoors is great, and the popularization and the use of flammable and explosive natural refrigerants such as R290 are not facilitated.

At present, the room is generally smaller, and the indoor unit occupies a larger space after being installed. The air conditioner inner unit comprises the evaporator and the fan component, on one hand, noise is difficult to improve, on the other hand, the evaporator and the fan component have a certain occupied area, so that the inner unit is thick, the shell is bulky, the indoor space is occupied, the indoor attractiveness is influenced, and meanwhile, the design of the appearance structure of the inner unit is restricted.

Under the background of the diversification of the housing types of newly built commodity at present, if an air conditioner needs an external pipeline, a series of problems such as long pipeline running, various elbow bends, high installation cost, large risk coefficient of high-altitude operation, large pipeline resistance and the like are caused frequently.

Because the air conditioner in the prior art is easy to have the risk of refrigerant leakage indoors, and the indoor unit has the technical problems of thicker volume, larger occupied space, influence on indoor attractiveness and the like, the invention designs a novel air conditioner.

Disclosure of Invention

Therefore, the invention aims to overcome the defect that the indoor refrigerant is easy to leak in the air conditioner in the prior art, thereby providing the air conditioner.

The invention provides an air conditioner which comprises an indoor unit, an outdoor unit and more than two evaporators, wherein the more than two evaporators are arranged in the outdoor unit, and the outdoor unit is connected with the indoor unit through an air flow connecting pipeline so as to send air flow subjected to heat exchange of the evaporators into the indoor unit for indoor heat exchange.

Preferably, the number of the evaporators is two, namely a first evaporator and a second evaporator, and a double-suction centrifugal fan is arranged between the first evaporator and the second evaporator, so that air flow passes through the two evaporators and then passes through the double-suction centrifugal fan to be sent to the indoor unit.

Preferably, the outdoor unit further comprises a compressor and a condenser arranged in the outdoor unit, wherein the upper and lower middle partition plates are transversely arranged in the outdoor unit, the inner cavity of the outdoor unit is divided into an upper computer and a lower computer which are not communicated with each other, the evaporator is arranged in the upper computer, and the condenser and the compressor are arranged in the lower computer.

Preferably, the upper computer comprises a left return air cavity, a right return air cavity and an air inlet cavity, the air inlet cavity is positioned between the left return air cavity and the right return air cavity, the left return air cavity and the air inlet cavity are separated by the first evaporator, the right return air cavity and the air inlet cavity are separated by the second evaporator, and the double-suction centrifugal fan is positioned in the air inlet cavity.

Preferably, the air flow connecting pipeline comprises a left air pipe, a middle air pipe and a right air pipe, the left air return cavity is communicated with the indoor unit through the left air pipe, the right air return cavity is communicated with the indoor unit through the right air pipe, and the air inlet cavity is communicated with the indoor unit through the middle air pipe.

Preferably, the outdoor unit is further provided with a left pipe orifice, a right pipe orifice and a middle pipe orifice, the left air pipe is connected with the left air return cavity through the left pipe orifice, the right air pipe is connected with the right air return cavity through the right pipe orifice, and the middle pipe is connected with the air inlet cavity through the middle pipe orifice.

Preferably, the left nozzle, the right nozzle and the middle nozzle are knock-out holes.

Preferably, a flow guiding middle partition board is further arranged in the upper computer, the left air return cavity is located between the flow guiding middle partition board and the first evaporator, the right air return cavity is located between the flow guiding middle partition board and the second evaporator, and the air inlet cavity is located between the first evaporator, the second evaporator and the flow guiding middle partition board.

Preferably, the outdoor unit comprises a shell, an upper computer pipeline cavity capable of accommodating an outdoor unit pipeline and an upper computer controller cavity for accommodating an outdoor unit controller are clamped between the flow guide middle partition plate and the shell, and the upper computer pipeline cavity and the upper computer controller cavity are separated by a third partition plate.

Preferably, the first evaporator and the second evaporator are both arranged transversely, and welding points of the first evaporator and the pipeline as well as the second evaporator and the pipeline are both positioned in the pipeline cavity of the outdoor unit of the upper computer.

Preferably, the first evaporator and the second evaporator are both plate-shaped heat exchangers.

The air conditioner provided by the invention has the following beneficial effects:

1. according to the air conditioner, more than two evaporators are arranged in the outdoor unit and are connected with the indoor unit through the connecting pipeline so as to exchange heat indoors, so that compared with the mode that the evaporators in the prior art are arranged in the indoor unit, the evaporators can be effectively transferred from the indoor unit to the outdoor unit, the leakage of refrigerants in the indoor unit is avoided, the problem that the air conditioner refrigerants enter the indoor unit after being leaked is solved, the potential safety hazard caused by the leakage of the refrigerants is greatly reduced, and a new way is provided for large-scale popularization and application of flammable and explosive natural refrigerants such as R290;

2. according to the air conditioner, the evaporator is arranged in the outdoor unit and is connected with the indoor unit through the connecting pipeline, so that the occupied space of the evaporator in the indoor unit is effectively reduced, and the heat exchange effect of the evaporator can be met (the air flow after heat exchange is conveyed into the indoor unit to achieve the effect of cooling or heating), so that the indoor unit can be made smaller, the occupied space of the indoor unit is effectively reduced, and the indoor unit is more attractive and elegant;

3. according to the air conditioner, the two evaporators are arranged on two sides, so that the heat exchange area of the evaporators is increased as much as possible under the premise of limiting the structure of the outdoor unit, and the air inlet area can be increased when the evaporators are arranged on the two sides; the evaporator is placed on two sides and is perpendicular to the air inlet, and wind resistance can be small. The double-suction centrifugal fan is arranged between the two evaporators, so that air can be fed from the two end faces of the centrifugal fan, the air inlet of the whole machine is large, and the air quantity is larger than that of a common fan at the same rotating speed, so that the heat exchange efficiency of the air conditioner is increased; the double-suction centrifugal fan has wider efficiency range, can be better suitable for a pipeline fan, can reduce the noise of the whole machine under the condition of the same power consumption of the whole machine, simultaneously adopts the double-suction centrifugal fan, and simultaneously returns air through the left air pipe 21 and the right air pipe 23 under the condition of a certain width of the whole machine, has shorter air channel distance and small air loss, and can maximize the fan efficiency;

4. according to the air conditioner, the air flow heat exchange space of the evaporator and the centrifugal fan can be effectively separated from other space by arranging the flow guide middle partition plate in the upper computer, and the other space is used for accommodating the outdoor unit pipeline, so that the problems that the air conditioner needs an external pipeline, the pipeline is overlong in running, the elbow and the bent pipe are numerous, the cost is overhigh, the pipeline resistance is high, dangerous operation is caused and the like are effectively avoided; and is convenient to process and maintain.

Drawings

Fig. 1 is a front perspective view of an outdoor unit of an air conditioner according to the present invention;

fig. 2 is a schematic view illustrating a front internal structure of an outdoor unit of the air conditioner according to the present invention;

fig. 3 is a top view of an outdoor unit of the air conditioner according to the present invention;

fig. 4 is a schematic front view showing a rear surface of an outdoor unit of the air conditioner according to the present invention;

fig. 5 is a schematic perspective view illustrating a rear surface of an outdoor unit of an air conditioner according to the present invention;

fig. 6 is a schematic diagram illustrating a top view of an indoor unit of an air conditioner according to the present invention;

fig. 7 is a schematic view showing a front structure of the air conditioner of the present invention mounted to a wall;

fig. 8 is a schematic top view of the air conditioner of the present invention mounted to a wall;

fig. 9 is a left-side view schematically showing the structure of the air conditioner of the present invention mounted to a wall;

fig. 10 is a schematic perspective view of a wall-mounted air conditioner of the present invention.

The reference numerals in the drawings are as follows:

1. an air conditioner; 101. an indoor unit; 102. an outdoor unit; 102a, an upper computer; 102b, a lower computer; 1a, a shell; 2. a panel; 3. a compressor; 4. axial flow fan blades; 5. a condenser; 6. an upper computer electrical box; 7. a top cover; 8. a flow guiding middle partition board; 9. an upper and a lower middle partition plates; 9a, small partition plates; 10. a lower computer pipeline; 11. a rear plate; 12. a right pipe orifice; 13. a middle pipe orifice; 14. a left pipe orifice; 15. a first evaporator; 16. a second evaporator; 17. double suction centrifugal fan; 18. a room; 19. welding points; 20. a wall; 21. a left air pipe; 22. a middle air pipe; 23. a right air pipe; 24. an air conditioner installation platform; 25. a large pipe connection port; 26. a small pipe connection port; a. a lower computer fan cavity; b. a lower computer compressor chamber; c. the upper computer pipeline cavity; d. a right return air cavity; e. a left return air cavity; f. an air inlet cavity; g. and a host computer controller cavity.

Detailed Description

Example 1

As shown in fig. 1 to 10, the present invention provides an air conditioner 1, which includes an indoor unit 101, an outdoor unit 102, and more than two evaporators, wherein the more than two evaporators are disposed inside the outdoor unit 102, and the outdoor unit 101 is connected with the indoor unit 101 through an air flow connection pipeline, so as to send the air flow after heat exchange of the evaporators into the indoor unit 101, and exchange heat in the room.

The two evaporators are arranged in the outdoor unit and are connected with the indoor unit through the air flow connecting pipeline so as to exchange heat indoors, so that compared with the mode that the evaporators in the prior art are arranged in the indoor unit, the evaporators can be effectively transferred from the indoor unit to the outdoor unit, the refrigerant leakage in the indoor is avoided, the problem that the refrigerant of the air conditioner enters the indoor after being leaked is solved, the potential safety hazard caused by the refrigerant leakage is greatly reduced, and a new way is provided for large-scale popularization and application of flammable and explosive natural refrigerants such as R290; the heat exchange area can be increased through the two evaporators, and the heat exchange effect is improved;

the evaporator is effectively transferred from the indoor unit to the outdoor unit, so that the occupied space of the evaporator in the indoor unit is effectively reduced, the heat exchange effect of the evaporator can be met (the refrigerant after heat exchange is conveyed into the indoor space in the outdoor unit so as to achieve the effect of cooling or heating), the thickness of the indoor unit is greatly reduced, the indoor space is saved, more possibilities are provided for the personalized design of the indoor unit, the indoor unit can be made smaller, the occupied space of the indoor unit is effectively reduced, and the indoor unit is more attractive and elegant;

preferably, the number of the evaporators is two, namely a first evaporator 15 and a second evaporator 16, and a double-suction centrifugal fan 17 is arranged between the first evaporator 15 and the second evaporator 16, so that air flow is sent to the indoor unit 101 through the two evaporators and then through the double-suction centrifugal fan 17.

By arranging two evaporators, the two evaporators are arranged on two sides, so that the heat exchange area of the evaporators is increased as much as possible under the premise of limiting the structure of the outdoor unit, and the air inlet area can be increased when the evaporators are arranged on two sides; the evaporator is placed on two sides and is perpendicular to the air inlet, and wind resistance can be small. The double-suction centrifugal fan is arranged between the two evaporators, so that air can be fed from the two end faces of the centrifugal fan, the air inlet of the whole machine is large, and the air quantity is larger than that of a common fan at the same rotating speed, so that the heat exchange efficiency of the air conditioner is increased; the double-suction centrifugal fan has wider efficiency range, can be better suitable for a pipeline fan, can reduce the noise of the whole machine under the condition of uniform power consumption of the whole machine, simultaneously adopts the double-suction centrifugal fan, and simultaneously returns air through the left air pipe 21 and the right air pipe 23 under the condition of a certain width of the whole machine, has shorter air channel distance and small air quantity loss, and can maximize the fan efficiency.

During the operation of the whole machine, the circulation of the whole system is that the double-suction centrifugal fan 17 sends air flow into the indoor unit 101 through the middle air pipe 22 and then into the room to realize the functions of refrigerating and heating, then the air flow is sent into the left air pipe 21 and the right air pipe 23 of the indoor unit 101 and then into the left air return cavity e and the right air return cavity d, further sent into the upper computer air inlet cavity f through the first evaporator 15 and the second evaporator 16, and then the double-suction centrifugal fan 17 carries out the next circulation on the air flow.

Preferably, the outdoor unit 102 includes a compressor 3, an axial flow fan 4, a condenser 5 and a throttling component disposed in the outdoor unit 102, an upper middle partition 9 and a lower middle partition 9 are disposed in the outdoor unit 102 along a transverse direction, an internal cavity of the outdoor unit 102 is partitioned into an upper computer 102a and a lower computer 102b which are not communicated with each other, the evaporator is disposed in the upper computer 102a, and the condenser 5, the compressor 3 and the throttling component are disposed in the lower computer 102 b. Through the structural style of adopting upper and lower middle baffle, can separate the inside cavity of off-premises station into two each other not intercommunications's cavity effectively to make the evaporimeter be located one of them cavity, compressor, condenser and throttling element are located another cavity, thereby make the heat transfer space of evaporimeter and the heat transfer space of condenser mutually noninterfere, guaranteed the effective independent heat transfer of evaporimeter, and with the refrigerant leading-in indoor after the heat transfer, make the heat transfer effect of evaporimeter receive the influence of compressor, condenser, throttling element etc. not, guarantee normal heat transfer effect, carry out heat exchange to indoor.

The upper and lower spacers 9 are arranged in a lateral direction such that the upper computer 102a is located at an upper portion of the outdoor unit 102 with respect to the lower computer 102b, and the lower computer 102b is located at a lower portion of the outdoor unit 102 with respect to the upper computer 102 a. The invention is a preferable setting form of the outdoor unit of the air conditioner, namely, the outdoor unit is divided into an upper cavity (upper computer) and a lower cavity (lower computer) by arranging an upper middle baffle plate and a lower middle baffle plate which are positioned in the middle of the upper and lower directions of the outdoor unit along the transverse direction, and the middle is separated by the upper middle baffle plate and the lower middle baffle plate; the lower cavity contains a condenser, an axial flow fan, a compressor, a throttling element, a controller, a pipeline, a partition plate and the like; the upper cavity contains an evaporator, a fairing, a baffle plate and the like; so that the upper cavity and the lower cavity can exchange heat independently without mutual influence.

Fig. 2 is an effect diagram of the panel 2 removed. The condenser 5 and the axial flow fan blade 4 are positioned in a lower computer fan cavity a, the compressor 3 and the lower computer pipeline 10 are positioned in a lower computer compressor cavity b, and after the welding connection between the lower computer pipeline 10 and the compressor 3 is completed, the air enters an upper computer pipeline cavity c through a large pipe connection port 25 and a small pipe connection port 26 in an upper partition plate 9 and then is connected with the first evaporator 15 and the second evaporator 16.

Example 2

This embodiment is a further improvement on the basis of embodiment 1, preferably, the upper computer 102a includes a left return air chamber e, a right return air chamber d, and an air intake chamber f, where the air intake chamber f is located between the left return air chamber e and the right return air chamber d, the left return air chamber e and the air intake chamber f are separated by the first evaporator 15, the right return air chamber d and the air intake chamber f are separated by the second evaporator 16, and the double suction centrifugal fan 17 is located in the air intake chamber f. The pipeline of the upper computer is divided into a right return air cavity d, an upper computer air inlet cavity f and a left return air cavity e by the first evaporator 15 and the second evaporator 16. The double-suction centrifugal fan 17 is positioned in the air inlet cavity f of the upper computer. The indoor air flow can be separated through the two evaporators to form two return air cavities, the air flow exchanges heat with the two evaporators respectively after passing through the return air cavities, and the suction in the middle of the air flow is generated through the action of the double-suction centrifugal fan, so that the air flow is continuously extracted from the indoor to exchange heat. Opposite the central orifice 13. And the flow guide middle partition board 8 divides the rest part of the upper computer into an upper computer pipeline cavity c and an upper computer controller cavity g. The upper computer pipeline cavity is mainly a pipeline placement space of the first evaporator 15 and the second evaporator 16, and the upper computer electrical box 6 is positioned in the upper computer controller cavity.

Preferably, the air flow connecting pipeline comprises a left air pipe 21, an intermediate air pipe 22 and a right air pipe 23, the left return air cavity e is communicated with the indoor unit 101 through the left air pipe 21, the right return air cavity d is communicated with the indoor unit 101 through the right air pipe 23, and the air inlet cavity f is communicated with the indoor unit 101 through the intermediate air pipe 22. The left return air cavity is communicated with the indoor unit through the left air pipe, air needing heat exchange is extracted from the indoor unit to perform the heat exchange effect with the first evaporator, the right return air cavity is communicated with the indoor unit through the right air pipe, air needing heat exchange is extracted from the indoor unit to perform the heat exchange effect with the second evaporator, the air inlet cavity is communicated with the indoor unit through the middle air pipe, air flow after heat exchange in the first evaporator and the second evaporator is blown into the indoor through the middle air pipe, and the heat exchange cycle of the air flow is completed.

Preferably, the outdoor unit 102 is further provided with a left nozzle 14, a right nozzle 12 and a middle nozzle 13, the left air pipe 21 is connected with the left air return cavity e through the left nozzle 14, the right air pipe 23 is connected with the right air return cavity d through the right nozzle 12, and the middle air pipe 22 is connected with the air inlet cavity f through the middle nozzle 13. The air flow in the air inlet cavity can enter the middle wind pipe.

Preferably, the left nozzle 14, the right nozzle 12 and the middle nozzle 13 are knock-out holes. Fig. 4 is a rear view of the integrated air conditioner 1. As can be seen from the figure, the rear plate 11 is provided with a right nozzle 12, a middle nozzle 13 and a left nozzle 14. The three pipe orifices adopt a knock-out hole structure, the structure can be knocked by using a tool, the middle structure can fall off after the knocking, and a schematic diagram after knocking is shown in fig. 5. Namely, the structure that the right pipe orifice 12, the middle pipe orifice 13 and the left pipe orifice 14 in the front and rear plates 11 are not installed and kept from knocking off not only prevents sundries from entering the integrated air conditioner 1, but also can ensure the appearance of the whole machine.

Fig. 7, 8, 9 and 10 are installation schematic views of the integrated air conditioner 1. The right, middle and left nozzles 12, 13, 14 in the rear plate 11 are knocked off while corresponding via holes are drilled in the wall 20 of the room 18 according to the positions of the right, middle and left nozzles 12, 13, 14 of the integrated air conditioner 1, ready to be installed. Then the integrated air conditioner 1 is fixed on an air conditioner mounting platform 24, the left air pipe 21 is in butt joint with the left pipe orifice 14, the middle air pipe 22 is in butt joint with the middle pipe orifice 13, the right air pipe 23 is in butt joint with the right pipe orifice 12, and the left air pipe 21, the middle air pipe 22 and the right air pipe 23 are required to enter the room through the through holes of the wall 20. Finally, the indoor unit 101 is fixed with the left air pipe 21, the middle air pipe 22 and the right air pipe 23, and the whole air conditioning system is installed.

Example 3

In this embodiment, a further improvement is made on the basis of embodiment 1 and/or 2, preferably, the upper computer 102a is further provided with a middle baffle 8 for guiding air, the left return air cavity e is located between the middle baffle 8 for guiding air and the first evaporator 15, that is, the middle baffle 8 for guiding air and the first evaporator 15 are sandwiched between the left return air cavity e, the right return air cavity d is located between the middle baffle 8 for guiding air and the second evaporator 16, that is, the right return air cavity d is sandwiched between the middle baffle 8 for guiding air and the second evaporator 16, and the air inlet cavity f is located between the first evaporator 15, the second evaporator 16 and the middle baffle 8 for guiding air, that is, the air inlet cavity f is sandwiched between the first evaporator 15, the second evaporator 16 and the middle baffle 8 for guiding air.

By arranging the flow guide middle partition plate in the upper computer, the air flow heat exchange space of the evaporator and the centrifugal fan can be effectively separated from other spaces, and the other spaces are used for accommodating the pipelines of the outdoor unit, so that the problems that the air conditioner needs an external pipeline, the pipeline is too long in running time, the elbow and the bent pipe are too many, the cost is too high, the pipeline resistance is large, dangerous operation and the like are effectively avoided; and is convenient to process and maintain.

And the upper computer pipeline cavity c and the lower computer compressor cavity b are all connected with the pipelines in the integrated air conditioner 1 through the large pipe connecting port 25 and the small pipe connecting port 26, so that the integrated air conditioner is convenient to process and maintain, meanwhile, a connecting pipe of a conventional air conditioner is not needed, and the reliability of the air conditioner is improved.

Preferably, the outdoor unit includes a casing 1a, an upper computer pipeline cavity c capable of accommodating an outdoor unit pipeline and an upper computer controller cavity g for accommodating an outdoor unit controller are sandwiched between the baffle plate 8 and the casing 1a, and the upper computer pipeline cavity c and the upper computer controller cavity g are separated by a small baffle plate 9 a. The flow guide middle partition board 8 divides the rest part of the upper computer into an upper computer pipeline cavity c and an upper computer controller cavity g. The upper computer pipeline cavity is mainly a pipeline placement space of the first evaporator 15 and the second evaporator 16, and the upper computer electrical box 6 is positioned in the upper computer controller cavity.

Preferably, the first evaporator 15 and the second evaporator 16 are both arranged laterally, and welding points between the first evaporator 15 and the second evaporator 16 and the pipeline are both located in the outdoor unit pipeline cavity c of the upper computer 102 a. As can be seen from fig. 2, 3 and 6, the upper computer pipeline cavity c is completely isolated from other cavities, and the welding position is also located in the upper computer pipeline cavity c, so that if the welding is unreliable, the refrigerant cannot enter the upper computer fan cavity f, the right return air cavity d and the left return air cavity e, and the problem that the air conditioner refrigerant enters the room after leaking can be solved.

Preferably, the first evaporator 15 and the second evaporator 16 are plate heat exchangers. The evaporator is in a preferred structural form, the welding position of the evaporator and the pipeline is still on the upper computer, the structure of the evaporator is a plate-shaped heat exchanger, the evaporator is divided into left and right parts by a flow guide middle partition plate 8 of the upper computer, the welding position of the evaporator and the pipeline is ensured to be in a pipeline cavity c of the upper computer, and meanwhile, the left second evaporator is vertically arranged and is convenient to weld. Compared with the structure that the welding part of the evaporator is arranged at the lower part of the outdoor unit, the structure has the advantages that the operation is difficult in the welding process, the wind resistance is large in the layout mode, and the wind loss in the pipeline is large, so that the operation is simple, the wind loss is small, and the wind resistance is small.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims

1. An air conditioner, characterized in that: the indoor unit comprises an indoor unit (101), an outdoor unit (102) and more than two evaporators, wherein the more than two evaporators are arranged inside the outdoor unit (102), and the outdoor unit (102) is connected with the indoor unit (101) through an air flow connecting pipeline so as to send air flow subjected to heat exchange of the evaporators into the indoor unit (101) and exchange of heat in a room; the two evaporators are respectively a first evaporator (15) and a second evaporator (16), and a double-suction centrifugal fan (17) is arranged between the first evaporator (15) and the second evaporator (16), so that air flow passes through the two evaporators firstly and then passes through the double-suction centrifugal fan (17) to be sent to the indoor unit (101); the outdoor unit (102) further comprises a compressor (3) and a condenser (5) which are arranged in the outdoor unit (102), wherein an upper middle partition board (9), a lower computer (102 a) and a lower computer (102 b) which are not communicated with each other are arranged in the outdoor unit (102) along the transverse direction, the evaporator is arranged in the upper computer (102 a), and the condenser (5) and the compressor (3) are arranged in the lower computer (102 b);

the upper computer (102 a) comprises a left return air cavity (e), a right return air cavity (d) and an air inlet cavity (f), wherein the air inlet cavity (f) is positioned between the left return air cavity (e) and the right return air cavity (d), the left return air cavity (e) and the air inlet cavity (f) are separated by the first evaporator (15), the right return air cavity (d) and the air inlet cavity (f) are separated by the second evaporator (16), and the double-suction centrifugal fan (17) is positioned in the air inlet cavity (f);

the upper computer (102 a) is also provided with a diversion middle partition board (8), the left return air cavity (e) is positioned between the diversion middle partition board (8) and the first evaporator (15), the right return air cavity (d) is positioned between the diversion middle partition board (8) and the second evaporator (16), and the air inlet cavity (f) is positioned between the first evaporator (15), the second evaporator (16) and the diversion middle partition board (8); the outdoor unit comprises a shell (1 a), an upper computer pipeline cavity (c) capable of containing an outdoor unit pipeline and an upper computer controller cavity (g) containing an outdoor unit controller are clamped between the flow guide middle partition plate (8) and the shell (1 a), and the upper computer pipeline cavity (c) and the upper computer controller cavity (g) are separated by a small partition plate (9 a); the first evaporator (61) and the second evaporator (62) are both transversely arranged, and welding points of the first evaporator (61) and the second evaporator (62) and the pipeline are both positioned in the pipeline cavity (c) of the upper computer (102 a).

2. An air conditioner according to claim 1, wherein: the air flow connecting pipeline comprises a left air pipe (21), an intermediate air pipe (22) and a right air pipe (23), wherein the left air return cavity (e) is communicated with the indoor unit (101) through the left air pipe (21), the right air return cavity (d) is communicated with the indoor unit (101) through the right air pipe (23), and the air inlet cavity (f) is communicated with the indoor unit (101) through the intermediate air pipe (22).

3. An air conditioner according to claim 2, wherein: the outdoor unit (102) is further provided with a left pipe orifice (14), a right pipe orifice (12) and a middle pipe orifice (13), the left air pipe (21) is connected with the left air return cavity (e) through the left pipe orifice (14), the right air pipe (23) is connected with the right air return cavity (d) through the right pipe orifice (12), and the middle pipe orifice (13) is connected with the air inlet cavity (f) through the middle pipe orifice (22).

4. An air conditioner according to claim 3, wherein: the left pipe orifice (14), the right pipe orifice (12) and the middle pipe orifice (13) are knock-out holes.

5. An air conditioner according to claim 1, wherein: the first evaporator (15) and the second evaporator (16) are plate-shaped heat exchangers.