CN209857242U - Outdoor machine of air conditioner - Google Patents

Abstract

The utility model discloses an air condensing units, include: casing, median septum, outdoor heat exchanger, outdoor fan, compressor and heating element. The middle partition board is arranged in the machine shell to divide the interior of the machine shell into a fan chamber and a mechanical chamber. The outdoor heat exchanger and the outdoor fan are arranged in the fan chamber. The compressor is arranged in the mechanical chamber. Heating element connects on the median septum, and heating element includes refrigerant heat transfer spare and heating member, and the refrigerant heat transfer spare links to each other with the gas vent of compressor, and the heating member is arranged in heating the refrigerant in the refrigerant heat transfer spare. The utility model discloses air condensing units, through set up heating element on the median septum, median septum intensity height is difficult for rocking, and the installation is easy. In winter, the heating element heats the refrigerant heat exchange element, and the refrigerant heat exchange element preheats the refrigerant flowing through and then leads the refrigerant into the indoor unit of the air conditioner, so that the time for starting the indoor unit of the air conditioner to heat can be shortened.

Description

Outdoor machine of air conditioner

Technical Field

The utility model belongs to the technical field of the air conditioner, specifically an air condensing units.

Background

The outdoor unit of the air conditioner mainly comprises a heat exchanger, a fan, a compressor, an electric control component, a liquid storage tank and other components. When in winter, the outdoor unit is located outdoors where the temperature is low, and thus the temperature of each component in the outdoor unit is low. When the air conditioner needs to be started, the heat exchange circulation efficiency is low due to the low temperature of each heat exchange circulation component or the low temperature of the refrigerant. In the prior art, in order to increase the heating cycle efficiency of the air conditioner in winter, a heating assembly is usually disposed in the air conditioner outdoor unit to additionally heat the air conditioner outdoor unit. However, these heating elements have a problem that they are difficult to assemble and disassemble, or they are liable to cause a large noise problem when the heating elements are operated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an air condensing units, air condensing units heat transfer cycle efficiency is high winter, and the assembly is easy, and the noise is little.

According to the utility model discloses air condensing units, include: a housing; the middle partition plate is arranged in the shell to divide the interior of the shell into a fan chamber and a mechanical chamber; the outdoor heat exchanger is arranged in the fan chamber; the outdoor fan is arranged in the fan chamber; the compressor is arranged in the mechanical chamber; the heating assembly is connected to the middle partition plate and comprises a refrigerant heat exchange piece and a heating piece, the refrigerant heat exchange piece is connected with an exhaust port of the compressor, and the heating piece is used for heating a refrigerant in the refrigerant heat exchange piece.

According to the utility model discloses air condensing units, through set up heating element on the median septum, median septum intensity height is difficult for rocking, and the installation is easy. When the heating assembly works, the refrigerant discharged from the exhaust port of the compressor is heated, so that the heat exchange cycle is smoothly operated, the outdoor unit of the air conditioner can still keep high-efficiency operation when the outdoor temperature is low in winter, and the heating cycle of the air conditioner can be reliably operated in winter. When the heating element heats the refrigerant heat exchange element in winter, the refrigerant heat exchange element preheats the refrigerant flowing through and then the refrigerant is introduced into the indoor unit of the air conditioner, so that the time for starting the indoor unit of the air conditioner to heat can be shortened.

According to the utility model discloses an air condensing units, some orientation of median septum is equipped with one side protrusion of heating element is in order to form the convex closure, the heating element is connected on the convex closure.

Optionally, the height of the convex hull protruding the surface of the middle partition plate is 2-30 mm.

Optionally, an orthographic projection of the heating assembly on the middle partition plate at least partially coincides with an orthographic projection of the convex hull on the middle partition plate.

According to the utility model discloses an air condensing units, the top of convex closure is formed with first draw-in groove, be formed with on the refrigerant heat transfer piece with first draw-in groove complex is fixed hook in advance.

Advantageously, a plurality of noise reduction holes are distributed on the convex bag.

Optionally, a plurality of ribs are provided around the surface of the convex hull of the noise reduction hole.

According to the utility model discloses an air condensing units, heating element still includes fixed cover, fixed cover dustcoat is in the refrigerant heat transfer spare with on the heating member.

Optionally, the fixed cover is provided with a hook, and the convex hull is provided with a second slot matched with the hook.

According to the utility model discloses an air condensing units, the heating member with be equipped with the heat transfer plate between the refrigerant heat transfer spare.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view (hiding part of the casing) of an outdoor unit of an air conditioner according to an embodiment of the present invention.

Fig. 2 is a schematic diagram illustrating a positional relationship between a heating element and a middle partition plate of an outdoor unit of an air conditioner according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a convex hull on the middle partition board in an embodiment of the present invention.

Fig. 4 is a schematic view of a longitudinal section structure of a convex hull on a middle partition plate according to an embodiment of the present invention.

Fig. 5 is a schematic perspective view of a convex hull on the middle partition board according to an embodiment of the present invention.

Fig. 6 is a schematic view of the overall structure of the heating assembly according to an embodiment of the present invention.

Fig. 7 is an exploded view of a heating assembly according to an embodiment of the present invention.

Fig. 8 is a side view of a refrigerant heat exchanging element according to an embodiment of the present invention.

Fig. 9 is a side view of a retaining cap in accordance with an embodiment of the present invention.

Reference numerals:

an outdoor unit of an air conditioner 100;

a housing 1; a fan chamber 11; a machine room 12; a mesh enclosure 13; a front panel 14;

a middle partition plate 2;

an outdoor heat exchanger 3;

a compressor 4;

a heating assembly 5;

a fixed cover 51; a hook 511; a heating member 52; the heat transfer plate 53; a refrigerant heat exchanger 54; a pre-fixing hook 541; a first thermal insulator 55; a second thermal shield 56;

a convex hull 6;

a first card slot 623;

a reinforcing rib 63;

the noise reduction holes 64;

a second card slot 65;

an electronic control unit 7.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "length", "upper", "lower", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The outdoor unit 100 of the present invention will be described.

According to the present invention, an outdoor unit 100 of an air conditioner, as shown in fig. 1, includes: the air conditioner comprises a shell 1, a middle partition plate 2, an outdoor heat exchanger 3, an outdoor fan, a compressor 4 and a heating assembly 5.

As shown in fig. 1 and 2, a partition wall 2 is provided in the casing 1 to divide the inside of the casing 1 into a fan compartment 11 and a machine compartment 12. The fan chamber 11 is mainly used for installing an outdoor fan and an outdoor heat exchanger 3; the machine room 12 is mainly used for mounting the compressor 4 and the like. The middle separation plate 2 has a certain strength, which is common to the outdoor unit 100, and the shape and size of the middle separation plate 2 are not limited, and can be adjusted according to the installation space of the outdoor unit 100 and the installation parts required in the chamber. Heating cycle components and heating principles of air conditioners such as the outdoor heat exchanger 3, the compressor 4, the indoor heat exchanger, the throttling element and the like belong to the prior art well known in the field, and are not described herein.

As shown in fig. 1 and 2, the heating unit 5 is attached to the middle separator 2.

As shown in fig. 6 and 7, the heating assembly 5 includes a refrigerant heat exchanging element 54 and a heating element 52, the refrigerant heat exchanging element 54 is connected to an exhaust port of the compressor 4, and the heating element 52 is used for heating the refrigerant in the refrigerant heat exchanging element 54.

According to the above structure, the utility model discloses air condensing units 100, median septum 2 itself has certain intensity, and 2 intensity height of median septum are difficult for rocking, through set up heating element 5 on median septum 2, install easily and heating element 5 installation back is difficult for droing, consequently heating element 5 can be stable install on median septum 2.

The heating member 52 disposed in the heating assembly 5 heats the refrigerant heat exchanging member 54, so that the refrigerant discharged from the compressor 4 is quickly preheated in the pipe passing through the refrigerant heat exchanging member 54, thereby allowing the heat exchanging cycle to smoothly operate. When the heating element 52 heats the refrigerant heat exchange element 54 in winter, the refrigerant heat exchange element 54 preheats the refrigerant flowing through and then is introduced into the indoor unit of the air conditioner, so that the time for starting the indoor unit of the air conditioner for heating can be shortened, and the user experience is improved.

In addition, when the air conditioner outdoor unit 100 needs to operate the defrosting mode, the channel of the refrigerant heat exchanger 54 of the heating unit 5 may be connected between the compressor 4 and the outdoor heat exchanger 3, so that the temperature of the refrigerant discharged from the compressor may be higher, and the defrosting effect of the air conditioner outdoor unit 100 may be better.

Compare and not set up heating element 5 among the prior art, promoted heating cycle efficiency on the one hand, on the other hand median septum 2 is more reliable with heating element 5's connection, and air condensing units 100 is difficult for producing the noise heating element 5 when the operation, and heating element 5 is convenient for from the dismouting on the median septum 2.

It should be noted that the heating assembly 5 of the present invention can be directly connected to the middle partition board 2 (the middle partition board 2 is used as a reinforcing structure), or indirectly connected to the middle partition board 2 through other components.

In some embodiments, the heating assembly 5 is indirectly connected to the middle partition 2 through a support plate, and the support plate is connected to the middle partition 2. In this scheme, backup pad centering baffle 2 has carried out local enhancement, and when heating element 5 through connect in the backup pad on reconnection to the median septum 2, can form more stable connection, prevent that median septum intensity is not enough and appear rocking or abnormal sound after making heating element 5 installs, and the setting of double-deck board has increased the rigidity of 5 junctions of heating element, effectively avoids the outside vibration of heating element.

In other embodiments, as shown in fig. 3 and 4, a portion of the middle partition 2 protrudes toward the side where the heating block 5 is provided to form a convex hull 6, and the heating block 5 is attached to the convex hull 6. It should be noted here that the heating unit 5 may be disposed in the fan chamber 11 or in the machine chamber 12, and correspondingly, the middle partition board 2 may protrude toward the machine chamber to form the convex hull 6, and the middle partition board 2 may also protrude toward the fan chamber 11 to form the convex hull 6. The convex hull 6 is integrally formed with the median septum 2, which increases the local strength of the median septum 2 and also provides an effective connection point and installation space for the heating assembly 5.

Optionally, as shown in fig. 4, the height h of the convex hull 6 protruding out of the surface of the middle partition board 2 is 2-30 mm. Within the range, the convex hull 6 can ensure the sufficient local reinforcing effect of the centering partition plate 2, and sufficient installation space is provided for the installation of the heating assembly 5, so that the heating assembly 5 can be conveniently installed.

Optionally, the convex hull 6 substantially forms a rectangle or polygon.

Advantageously, the orthographic projection of the heating assembly 5 on the median septum 2 at least partially coincides with the orthographic projection of the convex hull 6 on the median septum 2. That is to say, at least a part of heating element 5 overlaps with the projection of convex hull 6 on median septum 2, and at least a part of heating element 5 is connected on convex hull 6, makes heating element 5 connect more stably on convex hull 6, and the region of installation heating element 5 has higher intensity and rigidity, and heating element 5 is difficult for rocking after the installation, reduces the abnormal sound.

In some embodiments of the present invention, as shown in fig. 3 and 5, a first engaging groove 623 is formed at the top of the convex hull 6, and as shown in fig. 8, a pre-fixing hook 541 matched with the first engaging groove 623 is formed on the cooling medium heat exchanging element 54. When the heating component 5 is assembled on the convex hull 6, the pre-fixing hook 541 can be hung in the first clamping groove 623 along the hook direction for pre-fixing, and then subsequent assembly and fixing are performed, so that the heating component 5 and the convex hull 6 are conveniently and quickly connected.

Optionally, as shown in fig. 5, the first clamping groove 623 is rectangular, the first clamping groove 623 is disposed on a convex edge of the top of the convex hull 6, the hook direction of the pre-fixing hook 541 is set downward, and the pre-fixing hook 541 is only hung on the first clamping groove 623 to form pre-fixing.

Optionally, as shown in fig. 8, a pre-fixing hook 541 is formed on a side of the refrigerant heat exchanging element 54 facing the convex hull 6, and after the pre-fixing hook 541 is matched with the first clamping groove 623, a pre-fixing is formed between the refrigerant heat exchanging element 54 and the convex hull 6.

In some embodiments of the present invention, as shown in fig. 3 and 5, a plurality of noise reduction holes 64 are disposed on the convex hull 6. The noise reduction hole 64 is formed through the convex hull 6, and the noise reduction hole 64 communicates between the fan room 11 on one side of the middle partition plate 2 and the machine room 12 on the other side, so when noise in the fan room 11 or the machine room 12 is transmitted thereto, part of sound waves interfere with each other to reduce the transmission of the noise. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

Optionally, the noise reduction holes 64 are kidney-shaped holes, rectangular holes, and elliptical holes, and the noise reduction holes 64 are uniformly distributed in the middle area of the convex hull 6.

In some embodiments of the present invention, as shown in fig. 3 and 5, a plurality of ribs 63 are provided on the surface of the convex hull 6 surrounding the noise reduction holes 64. The reinforcing ribs 63 increase the strength of the convex hull 6 itself, and prevent the heating unit 5 from being vibrated to be partially cracked when the outdoor unit 100 of the air conditioner is operated after the heating unit 5 is coupled to the convex hull 6.

Optionally, the plurality of ribs 63 are arranged so that the extending direction thereof coincides with the longitudinal direction of the convex hull 6, so as to increase the strength of the entire convex hull 6 as much as possible.

Optionally, at least two of the reinforcing ribs 63 are arranged in parallel, a plurality of noise reduction holes 64 are formed between the two reinforcing ribs 63 arranged in parallel, and the extending direction of the noise reduction holes 64 is consistent with the extending direction of the reinforcing ribs 63. With the structure, the convex hull 6 is not insufficient in local strength due to the arrangement of the noise reduction holes 64, namely, the convex hull 6 not only ensures the strength and rigidity of the convex hull, but also ensures the sound insulation and noise reduction effects.

In some embodiments of the present invention, as shown in fig. 6, 7 and 9, the heating assembly 5 further includes a fixing cover 51, as shown in fig. 7, the fixing cover 51 covers the refrigerant heat exchanging element 54 and the heating element 52. The fixing cover 51 protects the internal heating structure and the heat transfer structure, and allows the components in the heating assembly 5 to be formed as an assembly, facilitating assembly. The retaining cap 51 is located on the outermost side of the heater module 5 and may also improve the integrity of the heater module 5.

Optionally, as shown in fig. 9, a hook 511 is disposed on the fixed cover 51, and referring to fig. 5, a second slot 65 is disposed on the convex hull 6 and is matched with the hook 511. Thus, when the hook 511 is locked in the second locking slot 65, the fixing cover 51 and the convex hull 6 are pre-fixed, so as to facilitate assembly. In the description of the present invention, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.

Optionally, as shown in fig. 5, the second engaging groove 65 is formed as a trapezoidal groove, the engaging hook 511 is formed as a trapezoidal engaging hook, the second engaging groove 65 and the engaging hook 511 are arranged in pairs, the second engaging groove 65 is arranged on the same side of the convex hull 6, and the engaging hook 511 is arranged on the same side of the fixing cover 51, so that after all the engaging hooks 511 and the second engaging grooves 65 are arranged in a one-to-one correspondence and form a fit, the pre-fixing is completed, and the other side of the fixing cover 51 and the convex hull 6 are further fixed by a fixing member (screw), and finally, a stable connection is formed therebetween. That is, the heating element 5 is integrally fixed to the convex hull 6.

In some embodiments of the present invention, as shown in fig. 7, a heat transfer plate 53 is disposed between the heating element 52 and the cooling medium heat exchanging element 54. The heat transfer plate 53 absorbs the heat transferred by the heating element 52 and transfers the heat to the refrigerant heat exchange element 54, thereby avoiding the situation of burnthrough caused by heat concentration, effectively protecting the damage of parts generated when the refrigerant heat exchange element 54 is directly heated by the heating element 52, and simultaneously effectively solving the problem of incompatible heat form transfer, so that the refrigerant heat exchange element 54 can be used in a wider range of materials, in addition, the heat transfer plate 53 indirectly transfers the heat of the heating element 52 to the refrigerant heat exchange element 54, and the spatial layout among the heating element 52, the refrigerant heat exchange element 54 and the heat transfer plate 53 can be adjusted according to the requirement.

For example, in some examples, the heating element 52 and the heat transfer plate 53 are spaced apart from each other, the heat transfer plate 53 and the cooling medium heat exchanging element 54 are attached to each other, and a projection area of the heat transfer plate 53 on the cooling medium heat exchanging element 54 can be set according to needs. The installation space is saved, and meanwhile, enough heat required by the refrigerant heating in the refrigerant heat exchange part 54 is ensured.

Optionally, the projection area of the heat transfer plate 53 on the cooling medium heat exchange member 54 is larger than half of the area of the cooling medium heat exchange member 54, so as to effectively ensure that the heat absorbed by the heat transfer plate 53 is transferred to the cooling medium heat exchange member 54.

In some examples, the heat transfer plate 53 is a steel plate. Of course, the heat transfer plate 53 may be made of other materials with good heat conductivity, such as a metal plate with good heat conductivity.

In some embodiments of the present invention, as shown in fig. 7, a first heat insulation member 55 is disposed between the heat transfer plate 53 and the heating member 52, and a second heat insulation member 56 is disposed between the refrigerant heat exchange member 54 and the convex hull 6. The arrangement of the first heat insulation member 55 can form a proper distance between the heat transfer plate 53 and the heating member 52, so as to ensure that the heat of the heating member 52 is efficiently absorbed and transferred by the heat transfer plate 53, and meanwhile, the arrangement of the first heat insulation member 55 effectively ensures that the heat on the heat transfer plate 53 is not lost to one side of the heating member 52, so that the heat is transferred to one side of the refrigerant heat exchange member 54 as far as possible. The second heat insulation part 56 is arranged to make the heat absorbed by the refrigerant heat exchange part 54 run off to one side of the convex hull 6 as little as possible, thereby ensuring that the refrigerant in the refrigerant heat exchange part 54 is heated quickly and improving the heat exchange efficiency.

Optionally, the first and second thermal insulation members 55 and 56 are both a high temperature resistant material and a thermal insulation material.

In some embodiments of the present invention, as shown in fig. 7, the heating element 52 is a heating wire coil, and the heating wire coil generates electromagnetism to heat the heating plate 53 after being electrified. In other embodiments, the heating member 52 is an electric heating member or a PTC heating member, which is not particularly limited herein.

In some embodiments of the present invention, as shown in fig. 7 and 8, the cooling medium heat exchanger 54 includes a micro-channel heat exchanger. The microchannel heat exchanger is provided with a plurality of fine heat exchange tubes and end collecting pipes, and can quickly exchange heat of flowing refrigerants. The specific structural form and heat exchange principle of the microchannel heat exchanger are not described in detail herein.

In order to better understand the solution of the embodiment of the present invention, the structure of the outdoor unit 100 of the air conditioner in one embodiment of the present invention is described below.

As shown in fig. 1, an outdoor unit 100 of an air conditioner includes a casing 1, a middle partition 2, an outdoor heat exchanger 3, an outdoor fan, a compressor 4, and a heating unit 5.

Wherein a mounting cavity is formed in the machine shell 1, and a middle partition plate 2 is arranged in the mounting cavity and divides the mounting cavity into a left fan room 11 and a right mechanical room 12. The front side of the installation cavity is provided with a front panel 14, an air outlet is formed on the front panel 14 corresponding to the fan room 11, and a mesh enclosure 13 is covered on the air outlet. An outdoor fan and an outdoor heat exchanger 3 are arranged in the fan chamber 11, and an air inlet is formed at the rear side of the outdoor heat exchanger 3. The lower part of the mechanical chamber 12 is provided with a compressor 4, the upper part is provided with an electric control component 7, and the electric control component 7 controls the opening and closing of electric components such as an outdoor fan, the compressor and the like.

As shown in fig. 2 and 3, a substantially rectangular convex hull 6 is formed in a protruding manner on the side of the middle partition plate 2 facing the machine room 12 (the convex hull 6 is integrally formed with the middle partition plate 2). The height h of the convex hull 6 protruding from the surface of the middle partition board 2 is 2-30 mm (as shown in fig. 4). As shown in fig. 3 and 5, a first locking groove 623 is formed at the top of the convex hull 6. A plurality of noise reduction holes 64 are uniformly distributed in the middle of the convex hull 6, and the extension direction of the noise reduction holes 64 is consistent with the length direction of the convex hull 6. Reinforcing ribs 63 are formed on both sides of the noise-reduction hole 64 so as to be aligned with the longitudinal direction of the convex hull 6. One side of the convex hull 6 is provided with a pair of second trapezoidal clamping grooves 65, and the other side of the convex hull 6 is provided with a light hole.

As shown in fig. 2, the heating assembly 5 is mounted on the convex hull 6. As shown in fig. 6 and 7, the heating assembly 5 includes, from right to left, a fixed cover 51, a heating member 52, a first heat insulating member 55, a heat transfer plate 53, a refrigerant heat exchanging member 54, and a second heat insulating member 56. As shown in fig. 9, the fixing cover 51 is provided with a pair of hooks 511, and the pair of hooks 511 is matched with the second slot 65 to form a pre-fixing structure. As shown in fig. 8, the cooling medium heat exchanging element 54 includes a micro-channel heat exchanger, and a pre-fixing hook 541 is disposed on the cooling medium heat exchanging element 54 to cooperate with the first engaging groove 623 to form a pre-fixing. The heat transfer plate 53 and the refrigerant heat exchanging element 54 are tightly fixed by welding or soldering, the first heat insulating element 55 and the second heat insulating element 56 are respectively provided with a bolt through hole, and when the refrigerant heat exchanging element 54 is mounted on the convex hull 6 of the middle partition plate 2, a bolt can pass through the through hole of the second heat insulating element 56. The heating element 52 is fixed by bolts through lugs and bosses provided on the fixing cover 51, and the first heat insulating member 55 is provided on the fixing cover 51 and pressed against the heat transfer plate 53. The interval between the heat transfer plate 53 and the heating member 52 is 1 to 20 mm. Finally, the heating element 5 is completely mounted on the middle partition 2 by covering the convex hull 6 with the fixing cover 51 and the heating member 52 and the like mounted therein.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically 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 invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the terms "embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An outdoor unit of an air conditioner, comprising:

a housing;

the middle partition plate is arranged in the shell to divide the interior of the shell into a fan chamber and a mechanical chamber;

the outdoor heat exchanger is arranged in the fan chamber;

the outdoor fan is arranged in the fan chamber;

the compressor is arranged in the mechanical chamber;

the heating assembly is connected to the middle partition plate and comprises a refrigerant heat exchange piece and a heating piece, the refrigerant heat exchange piece is connected with an exhaust port of the compressor, and the heating piece is used for heating a refrigerant in the refrigerant heat exchange piece.

2. The outdoor unit of claim 1, wherein a portion of the middle partition protrudes toward a side where the heating unit is provided to form a convex hull to which the heating unit is coupled.

3. The outdoor unit of claim 2, wherein the height of the convex hull protruding from the surface of the middle partition plate is 2-30 mm.

4. The outdoor unit of claim 2, wherein an orthographic projection of the heating unit on the middle partition plate is at least partially overlapped with an orthographic projection of the convex hull on the middle partition plate.

5. The outdoor unit of claim 2, wherein a first engaging groove is formed at a top of the convex hull, and a pre-fixing hook engaged with the first engaging groove is formed at the refrigerant heat exchange member.

6. The outdoor unit of claim 2, wherein a plurality of noise reduction holes are formed in the convex protrusions.

7. The outdoor unit of claim 6, wherein a plurality of ribs are formed on the surface of the convex hull surrounding the noise reduction holes.

8. The outdoor unit of claim 2, wherein the heating unit further comprises a fixing cover covering the refrigerant heat-exchanging member and the heating member.

9. The outdoor unit of claim 8, wherein the fixing cover has a hook, and the convex hull has a second engaging groove for engaging with the hook.

10. The outdoor unit of claim 1, wherein a heat transfer plate is disposed between the heating member and the refrigerant heat exchanging member.