CN217635903U

CN217635903U - Air conditioner

Info

Publication number: CN217635903U
Application number: CN202221883650.1U
Authority: CN
Inventors: 郭博渊; 陈超
Original assignee: Hisense Air Conditioning Co Ltd
Current assignee: Hisense Air Conditioning Co Ltd
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-10-21
Anticipated expiration: 2032-07-21

Abstract

An air conditioner includes: the box body comprises a bottom plate, a top plate and a side plate, wherein the bottom plate and the top plate are arranged oppositely, the side plate is arranged between the bottom plate and the top plate, a first cavity and a second cavity are defined in the box body, the first cavity and the second cavity are isolated from each other through a partition plate, and a first air inlet and a first air outlet which correspond to the first cavity and are communicated with the outside and a second air inlet and a second air outlet which correspond to the second cavity and are communicated with the inside are defined on the box body; the second heat exchanger and the second fan are arranged in the second chamber; the first heat exchanger is arranged in the first cavity; the supporting piece is arranged in the first cavity and is fixedly connected to the bottom plate; first fan locates in the first cavity and sets firmly on support piece, and first fan has locates first air outlet department and towards the first fan air outlet of first air outlet and locates the first fan air intake of first fan lateral part.

Description

Air conditioner

Technical Field

The application belongs to the field of air conditioners and relates to an air conditioner.

Background

According to market research, most of the existing mainstream air-conditioning plants have no indoor and outdoor integrated ceiling air conditioner, and the indoor refrigeration and heating requirements are met by adopting the tail ends of split ceiling machines or multi-split air conditioners. The split air conditioner needs to be provided with an outdoor unit, so that the split air conditioner is high in installation cost and dangerous to high-rise users.

Chinese application CN 111023288a provides an integrated air conditioner (as shown in fig. 1), in which the air conditioner case includes an indoor case and an outdoor case assembled as a whole, a water receiving tray is disposed in the indoor case to separate the internal space of the indoor case into an evaporation chamber and an electric control chamber, and the outdoor case is disposed on one side of the electric control chamber and a thermal insulation partition is disposed between the outdoor case and the electric control chamber. The integrated air conditioner is mainly an assembly of an indoor cabinet and an outdoor cabinet, and the whole structure of the integrated air conditioner is not different from that of a conventional air conditioner.

SUMMERY OF THE UTILITY MODEL

The utility model discloses there is the technical problem that the expense is high and the installation has certain risk to foretell high-rise installation split type air conditioner, provides an air conditioner.

In order to achieve the above object, the utility model discloses a technical scheme be:

an air conditioner comprising:

the box body comprises a bottom plate, a top plate and a side plate, wherein the bottom plate and the top plate are arranged oppositely, the side plate is arranged between the bottom plate and the top plate, a first cavity and a second cavity are defined in the box body, the first cavity and the second cavity are isolated from each other through a partition plate, a first air inlet and a first air outlet which correspond to the first cavity and are communicated with the outside, and a second air inlet and a second air outlet which correspond to the second cavity and are communicated with the inside are defined on the box body;

the second heat exchanger is arranged in the second cavity to exchange heat with air in the second cavity;

the second fan is arranged in the second chamber;

the first heat exchanger is arranged in the first cavity to exchange heat with air in the first cavity;

the supporting piece is arranged in the first cavity and fixedly connected to the bottom plate;

the first fan is arranged in the first cavity and fixedly arranged on the support piece, and the first fan is provided with a first fan air outlet arranged at the first air outlet and facing the first air outlet and a first fan air inlet arranged at the side part of the first fan.

The air conditioner concentrates indoor and outdoor units of the air conditioner in one box body, the outdoor unit is omitted, the whole air conditioner is convenient to install, the air conditioner can run after being electrified, a connecting pipeline and the outdoor unit do not need to be connected, and installation cost and installation risk are reduced. The first fan is supported by the support piece, so that the stability and the fixing reliability of the first fan are remarkably improved.

In some embodiments of the present application, a distance from the first fan to a bottom plate of the box body is L1, and a distance from the first fan to a top plate of the box body is L2; when the first fan is single-head air inlet, L1: L2= 1:5-1:7; when the first fan is double-head air inlet, the ratio of L1: L2= 1.2-1:3. The air quantity is adjusted by adjusting the height of the first fan, so that the efficiency of the fan can be effectively improved, and the installation convenience of the first fan is improved.

In some embodiments of the present application, the support member is selected from a bracket or a support leg of the motor; the bracket of the motor is a box structure positioned below the first fan; the supporting legs are positioned below the first fan and comprise at least two strip-shaped structures which are independent of each other; the latter is, in comparison, more variable and adaptable.

In some embodiments of the present application, the outlet of the first fan is connected to the corresponding side plate in a sealing manner through a sealing gasket, so that the sealing performance of the air outlet can be effectively guaranteed.

In some embodiments of the present application, the outlet of the first fan is connected to the corresponding side plate through a fastening member, so that the stability and firmness of the air outlet can be effectively guaranteed.

In some embodiments of this application, the department of meeting of the export of first fan and the curb plate that corresponds is equipped with the reinforcing muscle, can effectively ensure the stability and the fastness of air outlet.

In some embodiments of this application, the air conditioner still includes the humidification module, set up in second air intake department, and be located the box is outside, the humidification module is used for carrying out humidity monitoring to the air to and be used for flowing through the air of second air intake carries out the humidification, the warp air after the humidification module humidification passes through the second air outlet is discharged. Through the setting of humidification module, can increase the humidification function of air conditioner, be suitable for dry weather and use for user experience degree risees.

In some embodiments of the present application, the humidification module includes a wet film, a humidification frame, and an electromagnetic valve, the humidification frame is installed at the second air inlet, the wet film is located in the humidification frame, the humidification frame is connected with the electromagnetic valve through a water inlet pipeline, and when the electromagnetic valve is opened, tap water flows through the water inlet pipeline through the electromagnetic valve, enters the humidification frame, and is adsorbed on the wet film.

In some embodiments of this application, the humidification module still includes humidity transducer, humidity transducer install in second air intake department is used for the monitoring air humidity of second air intake department.

In some embodiments of the present application, the side plate provided with the first air inlet is opposite to the side plate provided with the second air outlet, and the side plate provided with the first air outlet is opposite to the side plate provided with the second air inlet; through rationally evenly arranging each air intake and air outlet for the utilization ratio of box is higher.

In some embodiments of the present application, the first heat exchanger is disposed corresponding to the first air inlet, and the second heat exchanger is disposed corresponding to the second air inlet; through the reasonable position that sets up each heat exchanger and corresponding air intake, can be so that the heat transfer effect is better.

In some embodiments of the present application, an electric heating device is disposed on a side of the second heat exchanger away from the second air inlet, and is used for heating air flowing through the second air inlet. And the electric heating equipment is added with the heating function of the air conditioner, so that the multi-party requirements of users can be met.

Drawings

FIG. 1 is a prior art air conditioner;

FIG. 2 is a perspective view of an air conditioner according to an embodiment;

FIG. 3 is a plan view of an embodiment of an air conditioner;

FIG. 4 is a diagram illustrating a cooling mode of an air conditioner according to an embodiment;

FIG. 5 is a heating mode diagram of an air conditioner according to an embodiment;

FIG. 6 is a first fan arrangement diagram of an air conditioner according to an embodiment;

FIG. 7 is an enlarged view of FIG. 6;

FIG. 8 is a first fan arrangement diagram of an air conditioner according to an embodiment;

FIG. 9 is an enlarged view of FIG. 8;

FIG. 10 is a highly schematic view of a first fan;

numbering in the figures: 11 boxes, 111 box bottom plates, 112 box top plates, 12 first chambers, 13 second chambers, 14 partition plates, 15 first air inlets, 16 first heat exchangers, 17 compressors, 18 first fans, 19 first air outlets, 20 second air inlets, 21 second heat exchangers, 22 electric heating equipment, 23 second fans, 24 second air outlets, 25 electric control equipment, 26 supporting legs, 27 wet films, 28 humidifying frames, 29 electromagnetic valves and 30 humidity sensors.

Detailed Description

The technical solutions of the present application are explained in detail below with reference to specific embodiments, however, it should be understood that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present application, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or as implying that the number of indicated technical features is indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present application, it is to be understood that the terms "upper," "lower," "bottom," "inner," and the like are used in the orientation or positional relationship indicated in fig. 2, which is only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be taken as limiting the present application.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser (corresponding to the first heat exchanger in the present embodiment), an expansion valve, and an evaporator (corresponding to the second heat exchanger in the present embodiment). The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a low-temperature and low-pressure state and discharges the refrigerant gas in a high-temperature and high-pressure state. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve, and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The conventional air conditioner also includes: an outdoor unit, mainly referring to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger; and an indoor unit mainly including an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit. The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

Unlike the air conditioner of the prior art, as shown in fig. 2 and 3, wherein fig. 2 is a perspective view of the air conditioner of the present embodiment, and fig. 3 is a plan view of the air conditioner of the present embodiment, the air conditioner of the present application includes a cabinet 11 having a first chamber 12 and a second chamber 13 adjacent to the first chamber 12, and the first chamber 12 and the second chamber 13 may be isolated from each other by a partition 14.

The first chamber 12 is provided with a first air inlet 15, a first heat exchanger 16, a compressor 17, a first fan 18 and a first air outlet 19, respectively. The first air inlet 15 and the first air outlet 19 are disposed on different side plates of the box 11, and an outlet of the first fan 18 is located at the first air outlet 19. The first air inlet 15 and the first air outlet 19 are connected to the outside of the room, for example, may be connected to the outside of the room through a connection duct to suck and discharge an air flow from the outside of the room to the outside of the room.

The second chamber 13 is provided with a second air inlet 20, a second heat exchanger 21, an electric heating device 22, a second fan 23 and a second air outlet 24. The second air inlet 20 and the second air outlet 24 are disposed on different side plates of the box 11, and an outlet of the second fan 23 is located at the second air outlet 24. The electric heating device 22 is located near the second heat exchanger and on a side of the second heat exchanger 21 away from the second air inlet 20, and is used for heating the air flowing through the second air inlet 20.

The partition plate 14 can better realize the sealing isolation of the first chamber 12 and the second chamber 13, thereby preventing wind from mixing between the two chambers; so that the first fan 18 serves the air intake and exhaust purposes in the first chamber 12 and the second fan 23 serves the air intake and exhaust purposes in the second chamber 13.

The box 11 is substantially rectangular parallelepiped and has four side plates, and the first air inlet 15, the first air outlet 19, the second air inlet 20 and the second air outlet 24 may be respectively located on the four side plates of the rectangular parallelepiped. Specifically, as shown in fig. 2, the first air inlet 15, the first air outlet 19, the second air outlet 24 and the second air inlet 20 may be respectively arranged along the four side plates in the clockwise direction; so that the first air inlet 15 is opposite to the second air outlet 20, and the first air outlet 19 is opposite to the second air inlet 20; through the separate arrangement of each air inlet and each air outlet, the arrangement of the box body 11 is more reasonable, and better and more sufficient application is achieved.

The tank 11 also includes an expansion valve (not shown) and an electronic control device 25. The expansion valve can be arranged in the first chamber 12 or the second chamber 13, and the compressor 17, the first heat exchanger 16, the expansion valve and the second heat exchanger 21 are sequentially circulated to form a refrigeration system.

The electronic control device 25 may be arranged in the first chamber 12 or in the second chamber 13, for example in fig. 2 and 3, in the first chamber 12 in the vicinity of the first fan 18.

The electronic control device 25 is a conventional electronic control device, and is used for controlling the operations of the electrical components in the box 11, such as the operation of the compressor 17, the opening and closing of the expansion valve, the start and stop of each fan, and the like.

When the air conditioner is in the cooling mode, as shown in fig. 4; the air flow from the first air inlet 15 on the left side enters the first chamber 12, exchanges heat at the first heat exchanger 16, and then is discharged from the first air outlet 19 out of the first chamber 12 through the first fan 18. The airflow from the second air inlet 20 on the right side enters the second chamber 13, exchanges heat at the second heat exchanger 21, and is discharged out of the second chamber 13 through the second air outlet 24 via the second fan 23.

When the air conditioner is in the heating mode, as shown in fig. 5, the air conditioner performs heating by the electric heating device. The second fan 23 is started, the airflow from the second air inlet 20 on the right side enters the second chamber 13, and after being heated by the electric heating device 22, the airflow is discharged out of the second chamber 13 through the second air outlet 24 via the second fan 23. In the heating mode, the relevant devices in the first chamber 12 do not need to operate, and the heating effect is achieved mainly by heating the air through the electric heating device 22.

The refrigeration mode and the heating mode of the air conditioner in the embodiment can be freely selected and switched according to the requirements of users, and the experience degree of the users is greatly improved. Compared with an independent refrigeration mode air conditioner, the air conditioner provided by the embodiment has a wider adaptable range.

In addition, the air conditioner according to the present embodiment may be an integrated air conditioner of a ceiling. Two relatively independent chambers are formed by providing a housing 11 having a first chamber 12 and a second chamber 13, and separating the first chamber 12 from the second chamber 13 using the partition 14. Corresponding devices such as a first heat exchanger 16, a first fan 18 and the like are designed in the first chamber 12; corresponding devices such as a second heat exchanger 21 and a second fan 23 are designed in the second chamber 13, so that respective functions of the chambers are realized. The indoor and outdoor units of the air conditioner are integrated in one box body 11, and the air conditioner can operate after being electrified without connecting pipelines and installing the outdoor unit. Through the integrated design of the indoor unit and the outdoor unit of the air conditioner, the outdoor unit is omitted, the whole machine is convenient to install, the danger of high-altitude operation is avoided, and the operability is stronger.

As shown in fig. 6 and 7, wherein fig. 6 is a layout view of the first fan 18 of the air conditioner, and fig. 7 is an enlarged view of fig. 6; it should be noted that other parts are omitted in the drawings to more clearly illustrate the manner of fixing the first fan 18; in one embodiment, the first fan 18 is fixedly installed with a motor bracket of the first fan, and then fixedly installed on the bottom plate 111 of the box 11. The outlet of the first fan 18 is hermetically connected with the corresponding side plate through a sealing gasket. Through setting up first fan 18 is at the fixed mode of bottom plate 111 to and the sealing connection of the curb plate that corresponds, can be so that first fan 18's stability and sealing performance are better.

As shown in fig. 8 and 9, wherein fig. 8 is a layout view of another mode of the first fan 18 of the air conditioner, and fig. 9 is an enlarged view of fig. 8; it is noted that other components are omitted in the drawings for clarity of illustration of the manner of securing the first fan 18; as an alternative embodiment, support legs 26 are provided between the first fan 18 and the bottom plate 111 of the housing 11 for supporting the first fan 18 on the bottom plate. The outlet of the first fan 18 is fixedly connected with the corresponding side plate through a fastener, for example, a bolt or the like may be adopted; through setting up first fan 18 adopts on bottom plate 111 the supporting leg 26 is fixed to and adopt the fastener to carry out fixed connection between the curb plate that corresponds, can make first fan 18 with the bottom plate, and with the connection between the corresponding curb plate fastening more reliable. Further, a reinforcing rib is arranged at the joint of the outlet of the first fan 18 and the side plate to prevent the side plate from deforming.

Although sealing between the outlet of the first fan 18 and the side plate is achieved by a gasket, and the first fan 18 is also securely fixed in this solution, there are two problems with this embodiment: for one, because there is no fixation between the outlet of the first fan 18 and the side plate, when the wind pressure is too large, a gap may be generated between the first fan 18 and the side plate, thereby generating air leakage and noise; as a second problem, the first fan 18 needs to be fixed to the motor bracket in advance, which is cumbersome to assemble and inconvenient to install. By adopting a subsequent alternative mode, namely by arranging the supporting legs and the reinforcing ribs, the two problems can be at least solved on the premise of ensuring the installation reliability.

As an embodiment of the present application, as shown in fig. 10, the distance of the first fan 18 from the bottom and top plates is shown. When the first fan 18 is determined, the sum of the distance L1 from the first fan 18 to the bottom plate 111 of the box and the distance L2 from the first fan 18 to the top plate 112 of the box is determined. When L1 is too small, L2 is too large, or L1 is too large, L2 is too small, the air quantity of the first fan 18 is reduced in different degrees. In the embodiment, when the first fan 18 is used for single-head air intake, the air volume of the whole machine is the highest when L1: L2= 1:5-1:7 is selected; for example, there can be 1. When the first fan 18 is double-head air inlet, the air volume of the whole fan is the highest when L1: L2= 1; for example, there may be 1. It should be noted that the specific proportional values mentioned above are only examples, and other values in the relevant interval may be selected according to the actual operating condition. According to the characteristics of the first fan 18, the fan efficiency can be effectively improved by adjusting the relation between the L1 and the L2, so that the air volume of the whole fan is improved.

The first fan 18 is fixed by adopting a supporting leg 26, and the supporting leg 26 can be a strip-shaped structure; by selecting the support leg 26 to be a height-adjustable structure, or by replacing a support leg 26 of a different height, it is possible to make the proportional relationship adjustment of L1 and L2 possible by adjusting the height of the support leg 26. It should be noted that, although the figure shows only two support legs 26, the number of the support legs 26 may be selected according to actual requirements, for example, one support leg with sufficient strength may be used, or a larger number of support legs may be used. Through the design of the supporting leg 26 of the first fan, the operating efficiency of the first fan is obviously improved, and meanwhile, the installation convenience of the first fan is improved.

As a further embodiment, a humidifying module is disposed outside the box 11 and located at the second air inlet 20, and the humidifying module includes a wet film 27, a humidifying frame 28, an electromagnetic valve 29 and a humidity sensor 30. The humidification module is used for monitoring the humidity of the air and humidifying the air flowing through the second air inlet 20, and the air humidified by the humidification module is discharged through the second air outlet 24.

The wet film 27 is located in the humidifying frame 28, and the humidifying frame 28 is installed at the second air inlet 20 and located at the bottom of the second air inlet 20, as shown in fig. 2. The humidifying frame 28 is provided with a plurality of exhaust passages, so that the wind area of the wet film 27 can be increased to the maximum extent, and the indoor humidifying quantity requirement can be met. One end of the humidifying frame 28 is also provided with a circular hole as a water inlet for discharging tap water. The bottom of the humidifying frame can contain water, so that the adsorption of the wet film 27 is met to the maximum extent, and the humidifying quantity of the humidifying module is effectively improved.

The electromagnetic valve 29 is arranged on the side plate and is connected with a water inlet of the humidifying frame 28 through a water inlet pipeline, and tap water is introduced into the humidifying frame 28 through the electromagnetic valve controlled by an electromagnetic valve switch and is discharged into the humidifying frame 28 through the water inlet pipeline.

The humidity sensor 30 is installed at the second air inlet 20, and is used for monitoring the indoor air humidity at the second air inlet 20 in real time. When the humidity is too low, the electromagnetic valve 29 is opened, tap water flows through the water inlet pipeline through the electromagnetic valve 29, the drained tap water enters the humidification frame 28, is adsorbed on the wet film 27 through siphoning, and finally, water vapor is drained into a room under the action of the second fan 23, so that the air is humidified.

Set up humidity transducer and can real-time supervision indoor humidity, open the humidification module when humidity is low excessively. Because of indoor drying in winter, the humidification module can effectively slow down indoor humidity not enough, improves indoor travelling comfort. Through the setting of humidification module and relevant wet membrane 27, humidification frame 28, solenoid valve 29 and humidity transducer 30, can increase the humidification function of air conditioner, improve user's experience, reinforcing user's comfort level.

The embodiments described above are merely preferred embodiments of the present application, and are not intended to limit the scope of the present application, and various modifications and improvements made to the technical solutions of the present application by those skilled in the art without departing from the spirit of the present application should fall within the protection scope defined by the claims of the present application.

Claims

1. An air conditioner, comprising:

the box body comprises a bottom plate, a top plate and a side plate, wherein the bottom plate and the top plate are arranged oppositely, the side plate is arranged between the bottom plate and the top plate, a first cavity and a second cavity are defined in the box body, the first cavity and the second cavity are mutually isolated through a partition plate, a first air inlet and a first air outlet which correspond to the first cavity and are communicated with the outdoor space, and a second air inlet and a second air outlet which correspond to the second cavity and are communicated with the indoor space are defined on the box body;

the second fan is arranged in the second chamber;

2. The air conditioner according to claim 1, wherein the first fan is spaced from a bottom plate of the cabinet by a distance L1 and from a top plate of the cabinet by a distance L2; when the first fan is single-head air inlet, L1: L2= 1:5-1:7; when the first fan is double-head air inlet, L1: L2= 1.2-1:3.

3. The air conditioner according to claim 1 or 2, wherein the supporter is one selected from the group consisting of: a bracket and a support leg of the motor; the bracket of the motor is a box structure positioned below the first fan; the supporting leg is located the below of first fan, includes two at least mutually independent bar structures.

4. The air conditioner according to claim 1 or 2, wherein the outlet of the first fan is hermetically connected with the corresponding side plate through a gasket; or the outlet of the first fan is connected with the corresponding side plate through a fastening piece; the joint of the outlet of the first fan and the corresponding side plate is provided with a reinforcing rib.

5. The air conditioner as claimed in claim 1 or 2, further comprising a humidifying module for humidity monitoring and humidifying the air, wherein the humidifying module is disposed at the second air inlet and outside the cabinet to humidify the air passing through the second air inlet, and the air humidified by the humidifying module is discharged through the second air outlet.

6. The air conditioner as claimed in claim 5, wherein the humidifying module comprises a wet film, a humidifying frame and an electromagnetic valve, the humidifying frame is installed at the second air inlet, the wet film is located in the humidifying frame, the humidifying frame is connected with the electromagnetic valve through a water inlet pipeline, and when the electromagnetic valve is opened, tap water flows through the water inlet pipeline through the electromagnetic valve, enters the humidifying frame and is adsorbed on the wet film.

7. The air conditioner as claimed in claim 6, wherein the humidifying module further comprises a humidity sensor installed at the second air inlet, the humidity sensor being used for monitoring the air humidity at the second air inlet.

8. The air conditioner according to claim 1 or 2, wherein the side plate provided with the first air inlet is opposite to the side plate provided with the second air outlet, and the side plate provided with the first air outlet is opposite to the side plate provided with the second air inlet.

9. The air conditioner according to claim 1 or 2, wherein the first heat exchanger is disposed corresponding to the first air inlet, and the second heat exchanger is disposed corresponding to the second air inlet; the second fan is provided with a second fan air outlet which is arranged at the second air outlet and faces the second air outlet, and a second fan air inlet which is arranged at the side part of the second fan; and the air inlet of the second fan is close to the second heat exchanger.

10. The air conditioner according to claim 1 or 2, wherein an electric heating device is disposed on a side of the second heat exchanger away from the second air inlet, and the electric heating device is configured to heat air flowing through the second air inlet.