Integral air conditioner

Abstract

The present invention discloses an integrated air conditioner, comprising an inner unit casing and a centrifugal impeller. The inner unit casing is provided with an indoor air duct, an indoor air inlet, and an indoor air outlet. The indoor air inlet and the indoor air outlet are both connected to the air inlet and air outlet of the indoor air duct. The centrifugal impeller is disposed in the indoor air duct, with the air inlet side of the centrifugal impeller connected to the air inlet, and the air outlet side of the centrifugal impeller connected to the air outlet. The technical solution of the present invention can increase the air supply distance of the integrated air conditioner.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an integrated air conditioner. Background Art

[0002] Currently, split-type air conditioners, such as wall-mounted units, are commonly used for temperature control in prefabricated and container homes. However, these units are complex to install, and the walls of prefabricated and container homes don't provide adequate support, which can easily cause them to fall and even damage the walls. Mobile air conditioners are also available on the market. While they are easy to install, they only deliver air over short distances and are not suitable for long-distance air delivery. Summary of the Invention

[0003] The main purpose of the present invention is to provide an integrated air conditioner, aiming to increase the air supply distance.

[0004] To achieve the above-mentioned object, the present invention provides an integrated air conditioner, comprising:

[0005] an inner unit casing, wherein the inner unit casing is provided with an indoor air duct, an indoor air inlet, and an indoor air outlet, wherein the indoor air inlet and the indoor air outlet are both connected to the indoor air duct; and

[0006] A centrifugal wind wheel is arranged in the indoor air duct.

[0007] Optionally, the air inlet side of the centrifugal wind wheel is arranged toward the indoor air inlet.

[0008] Optionally, an indoor heat exchanger is provided between the indoor air inlet and the air inlet side of the centrifugal wind wheel.

[0009] Optionally, the front of the inner casing of the inner machine casing is taken as the front;

[0010] The axis of the centrifugal wind wheel extends in the front-to-back direction; or, the axis of the centrifugal wind wheel extends in the left-to-right direction.

[0011] Optionally, the indoor air inlet is arranged on the front side of the inner shell, with the front side of the inner shell of the inner machine casing as the front, and the indoor air inlet is staggered with the centrifugal wind wheel in the front-to-back direction.

[0012] Optionally, the integrated air conditioner includes two centrifugal wind wheels, and an indoor air outlet is provided on the front side of the inner casing of the inner machine casing corresponding to each centrifugal wind wheel.

[0013] Optionally, the two indoor air outlets are spaced apart in the up and down directions.

[0014] Optionally, the two centrifugal wind wheels are spaced apart in the up and down directions.

[0015] Optionally, there is one indoor air inlet, and the air inlet sides of the two centrifugal wind wheels are both connected to the indoor air inlet.

[0016] Optionally, the indoor air inlet is located between the two centrifugal wind wheels, and the two centrifugal wind wheels are spaced apart from the indoor air inlet in the upper and lower directions.

[0017] Optionally, the centrifugal wind wheel includes a hub, a first blade group and a second blade group, the axis of the hub extends in the left and right directions, the first blade group and the second blade group are arranged on two opposite sides of the hub in the axial direction, and are both arranged on the periphery of the hub, and the sides of the first blade group and the second blade group away from each other form an air inlet side respectively.

[0018] Optionally, the integrated air conditioner further includes an outer casing and a compressor, the outer casing is provided with an outdoor air duct, the outdoor air duct is connected to the outdoor space, the outer casing is connected to the inner casing, and the compressor is arranged in the inner casing.

[0019] The present invention utilizes a centrifugal impeller as the power source for the integrated air conditioner, increasing the air delivery distance of the integrated air conditioner, making it easier to use in spaces such as prefabricated homes and container houses. Furthermore, the centrifugal impeller operates smoothly, reducing noise. When used in prefabricated homes or container houses, it can also reduce vibrations in the integrated air conditioner, thereby minimizing noise generated by vibration and friction between the integrated air conditioner and the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 This is a structural diagram of an embodiment of an integrated air conditioner of the present invention;

[0022] Figure 2 for Figure 1 A cross-sectional diagram of an integral air conditioner;

[0023] Figure 3 It is a structural schematic diagram of another embodiment of the integrated air conditioner of the present invention;

[0024] Figure 4 for Figure 3 A cross-sectional diagram of an integral air conditioner;

[0025] Figure 5 It is a structural schematic diagram of another embodiment of the integrated air conditioner of the present invention;

[0026] Figure 6 for Figure 5 Schematic diagram of the internal structure of the integrated air conditioner;

[0027] Figure 7 This is a schematic structural diagram of an embodiment of an outdoor fan and an outdoor heat exchanger in an integrated air conditioner of the present invention;

[0028] Figure 8 Schematic diagram of the structure of another embodiment of the outdoor fan and outdoor heat exchanger in the integrated air conditioner of the present invention;

[0029] Figure 9 Schematic diagram of the structure of another embodiment of the outdoor fan and outdoor heat exchanger in the integrated air conditioner of the present invention;

[0030] Figure 10 Schematic diagram of the structure of an outdoor fan and an outdoor heat exchanger in another embodiment of the integrated air conditioner of the present invention;

[0031] Figure 11 This is a structural schematic diagram of another embodiment of the outdoor fan in the outer casing of the integrated air conditioner of the present invention.

[0032] Description of Figure Numbers:

[0033] Label name Label name 10 Inner machine casing 40 External casing 11 Indoor air duct 41 Outdoor air inlet 12 Indoor air inlet 42 Outdoor air outlet 13 Indoor air outlet 43 Back of the shell 14 Front of inner shell 44 Top surface of the shell 15 Inner shell side 45 Shell side 16 Back of inner shell 50 compressor 17 Air outlet duct 60 Outdoor heat exchanger 20 Centrifugal impeller 70 Isolation cover 30 Indoor heat exchanger 80 Outdoor fan

[0034] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] The present invention provides an integrated air conditioner, which can be used in a mobile house or a container house, and of course, can also be used in a commercial house.

[0039] In the embodiments of the present invention, please refer to Figure 1 and Figure 2 The integrated air conditioner includes an inner unit casing 10 and a centrifugal fan wheel 20. The inner unit casing 10 is provided with an indoor air duct 11, an indoor air inlet 12 and an indoor air outlet 13. The indoor air inlet 12 and the indoor air outlet 13 are both connected to the indoor air duct 11. The centrifugal fan wheel 20 is provided in the indoor air duct 11.

[0040] Typically, the inner unit housing 10 is located indoors, with both the indoor air inlet 12 and the indoor air outlet 13 communicating with the indoor space, thereby enabling heat exchange with the indoor air. The air inlet side of the centrifugal impeller 20 communicates with the indoor air inlet 12, while the air outlet side of the centrifugal impeller 20 communicates with the indoor air outlet 13. Of course, the installation location of the inner unit housing 10 is not limited herein; for example, the inner unit housing 10 can also be located outdoors, with both the indoor air inlet 12 and the indoor air outlet 13 communicating with the indoor space.

[0041] In the technical solution of the present invention, by using a centrifugal impeller 20 as the power source of the integrated air conditioner, the air delivery distance of the integrated air conditioner can be increased, making it easier to use in spaces such as prefabricated houses or container houses. Furthermore, the centrifugal impeller 20 operates smoothly and reduces noise. When used in a prefabricated house or container house, it can reduce vibration of the integrated air conditioner, thereby reducing noise generated by vibration and friction between the integrated air conditioner and the wall.

[0042] In one embodiment, the air inlet side of the centrifugal impeller 20 is positioned toward the indoor air inlet 12. Specifically, the indoor air inlet 12 is positioned on the inner housing 10 facing the air inlet side of the centrifugal impeller 20. This reduces the distance between the air inlet side of the centrifugal impeller 20 and the indoor air inlet 12, thereby shortening the air inlet path and the air duct between the indoor air inlet 12 and the indoor air outlet 13. Of course, in other embodiments, the indoor air inlet 12 and the air inlet side of the centrifugal impeller 20 may be spaced apart in the vertical direction.

[0043] Furthermore, in one embodiment, an indoor heat exchanger 30 is disposed between the indoor air inlet 12 and the air inlet side of the centrifugal impeller 20. Specifically, after indoor air enters the indoor air duct 11 from the indoor air inlet 12, it first undergoes heat exchange through the indoor heat exchanger 30. The heat-exchanged air then passes through the centrifugal impeller 20 and is discharged through the indoor air outlet 13. This ensures that all air entering the indoor air inlet 12 passes through the indoor heat exchanger 30, improving heat exchange efficiency. This also allows the heat-exchanged airflow to quickly enter the centrifugal impeller 20 and be discharged through the indoor air outlet 13, shortening the airflow path and reducing energy loss. Furthermore, this reduces wind resistance at the indoor air outlet 13, ensuring a higher air velocity and longer air delivery distance, while also reducing dust accumulation inside the indoor heat exchanger 30. Of course, in other embodiments, the indoor heat exchanger 30 can also be disposed between the indoor air outlet 13 and the air outlet side of the centrifugal impeller 20.

[0044] The inner housing has a front face 14, a rear face 16, and two side faces 15. The front face 14 faces the rear face 16, and the side faces 15 face each other. Each side face 15 is located between the front face 14 and the rear face 16. Typically, when a unitary air conditioner is in use, for example, when the unitary air conditioner is placed against a wall, the rear face 16 faces the wall. The following description uses the front face 14 as the front, the rear face 16 as the rear, and the side faces 15 as the left and right sides.

[0045] Please refer to Figure 3 and Figure 4 , or in combination with reference Figure 5 and Figure 6In one embodiment, the integrated air conditioner includes two centrifugal impellers 20, and an indoor air outlet 13 is provided on the front face 14 of the inner casing 10, corresponding to each centrifugal impeller 20. That is, the inner casing is provided with two indoor air outlets 13, one of which is connected to the outlet side of one centrifugal impeller 20, and the other is connected to the outlet side of the other centrifugal impeller 20. This allows each indoor air outlet 13 to independently supply air, increasing the number of outlet locations on the inner casing 10 and expanding the air supply range. For example, when the two indoor air outlets 13 are spaced apart in the vertical direction, the air supply range in the vertical direction can be expanded. Furthermore, when the two indoor air outlets 13 are spaced apart in the left-right direction, the air supply range in the left-right direction can be expanded. Of course, in other embodiments, only one indoor air outlet 13 may be provided, with the outlet sides of both centrifugal impellers 20 connected to the indoor air outlet 13.

[0046] In one embodiment, at least one indoor air outlet 13 is located on the front face 14 of the inner shell, that is, the indoor air outlet 13 is located on the front side of the unitary air conditioner. This facilitates directing the outlet airflow toward the front and left and right sides of the unitary air conditioner, thereby increasing the air supply range of the unitary air conditioner and reducing the possibility of the indoor air outlet 13 being blocked by indoor objects. Alternatively, both indoor air outlets 13 may be located on the front face 14 of the inner shell, or one indoor air outlet 13 may be located on the front face 14 of the inner shell and the other indoor air outlet 13 may be located on the side face 15 of the inner shell. Of course, in other embodiments, both indoor air outlets 13 may also be located on the side face 15 of the inner shell.

[0047] There are many locations for the indoor air inlet 12. For example, in one embodiment, at least one indoor air inlet 12 is provided on the inner shell front 14 of the inner machine casing 10. That is, when there is only one indoor air inlet 12, the indoor air inlet 12 is provided on the inner shell front 14. When there are two or more indoor air inlets 12, at least one indoor air inlet 12 is provided on the inner shell front 14. The indoor air inlet 12 is also provided on the front side of the integral air conditioner, which can reduce the possibility of the indoor air inlet 12 being blocked by indoor objects and ensure the air intake effect. Among them, both indoor air inlets 12 can be provided on the inner shell front 14; or one of the indoor air outlets 13 can be provided on the inner shell front 14, and the other indoor air outlet 13 can be provided on the inner shell side 15; or one of the indoor air outlets 13 can be provided on the inner shell front 14, and the other indoor air outlet 13 can be provided on the inner shell back 16.

[0048] In another embodiment, at least one indoor air inlet 12 is disposed on the inner casing side 15 of the inner unit casing 10. Specifically, when there is only one indoor air inlet 12, it is disposed on the inner casing side 15; when there are two or more indoor air inlets 12, at least one indoor air inlet 12 is disposed on the inner casing side 15. When the indoor air outlet 13 is disposed on the inner casing front 14, this arrangement allows the indoor air outlet 13 and the indoor air inlet 12 to be spaced farther apart and face different directions. This reduces the likelihood of airflow from the indoor air outlet 13 being directly drawn into the indoor air inlet 12, improves indoor air circulation, and ensures sufficient indoor air circulation and heat exchange. The two indoor air inlets 12 can be both provided on the inner shell side surface 15. In this case, an indoor air inlet 12 can be provided on each side surface of the inner unit casing 10, and the two indoor air ducts 11 can be connected to the two indoor air inlets 12 in a one-to-one correspondence. Alternatively, two indoor air inlets 12 can be provided on each inner shell side surface 15, with one indoor air inlet 12 on each of the two inner shell side surfaces 15 connected to one of the indoor air ducts 11, and the other indoor air inlet 12 on the two inner shell side surfaces 15 connected to the other indoor air duct 11. Alternatively, one indoor air outlet 13 can be provided on the inner shell side surface 15, and the other indoor air outlet 13 can be provided on the inner shell back surface 16.

[0049] In another embodiment, both indoor air inlets 12 may be disposed on the inner shell rear surface 16. When the indoor air outlet 13 is disposed on the inner shell front surface 14, the indoor air outlet 13 and the indoor air inlet 12 are spaced farther apart and face in different directions, thereby reducing the possibility of the airflow from the indoor air outlet 13 being directly drawn into the indoor air inlet 12. This also improves the indoor air circulation effect and enables sufficient indoor air circulation and heat exchange.

[0050] There are many ways to install the centrifugal impeller 20. For example, please refer to Figure 2 or Figure 4 In one embodiment, the axis of the centrifugal impeller 20 extends in the front-to-back direction. That is, the air inlet side of the centrifugal impeller 20 is arranged toward the front or rear side of the inner casing 10. This allows full utilization of the space inside the inner casing 10 in the left-right and up-down directions, making the radial dimension of the centrifugal impeller 20 larger, thereby increasing the air supply of the centrifugal impeller 20. At the same time, the axial dimension of the centrifugal impeller 20 is smaller, which can reduce the inner front-to-back dimension of the inner casing 10. In the embodiment in which the air inlet side of the centrifugal impeller 20 is arranged toward the indoor air inlet 12, that is, the indoor air inlet 12 can be arranged on the front side 14 or the back side 16 of the inner casing. In this embodiment, the indoor air outlet 13 is arranged on the front side 14 of the inner casing. Of course, in other embodiments, when the axis of the centrifugal impeller 20 extends in the front-to-back direction, the indoor air inlet 12 can also be arranged on the side surface 15 of the inner casing.

[0051] In addition, please refer to Figure 6 In another embodiment, the axis of the centrifugal impeller 20 extends in the left-right direction. That is, the air inlet side of the centrifugal impeller 20 is arranged toward the left or right side of the inner housing 10. It should be understood that the air inlet side of the centrifugal impeller 20 is located on one side of the axial direction, while the air outlet side of the centrifugal impeller 20 is located on the circumferential surface. Therefore, when arranged in this manner, the air outlet side of the centrifugal impeller 20 can be directed toward the outdoor air outlet 42 on the front face 14 of the inner housing. This allows the airflow from the air outlet side of the centrifugal impeller 20 to be directly discharged from the outdoor air outlet 42, thereby reducing the deflection of the airflow from the air outlet side of the centrifugal impeller 20. This reduces the excessive energy loss caused by the change in airflow direction between the air outlet side of the centrifugal impeller 20 and the indoor air outlet 13, thereby facilitating an increase in the air supply distance. In the embodiment where the air inlet side of the centrifugal impeller 20 is arranged toward the indoor air inlet 12, that is, the indoor air inlet 12 is provided on the side face 15 of the inner housing. Of course, in other embodiments, when the axis of the centrifugal impeller 20 extends in the left-right direction, the indoor air inlet 12 may also be provided on the front surface 14 or the back surface 16 of the inner shell.

[0052] Furthermore, unlike the embodiment in which the air inlet side of the centrifugal impeller 20 is disposed toward the indoor air inlet 12, in another embodiment, the indoor air inlet 12 is disposed on the inner casing front surface 14, and the indoor air inlet 12 and the centrifugal impeller 20 are offset in the front-to-back direction. That is, the orthographic projection of the centrifugal impeller 20 on the inner casing front surface 14 is spaced apart from the indoor air inlet 12. Thus, when the indoor heat exchanger 30 is disposed inside the indoor air inlet 12, the indoor heat exchanger 30 and the centrifugal impeller 20 are also offset in the front-to-back direction. This prevents the indoor heat exchanger 30 and the centrifugal impeller 20 from sharing the front-to-back space of the inner unit casing 10, thereby reducing the front-to-back size of the inner unit casing 10.

[0053] Please refer to Figure 3 or Figure 5In one embodiment, the two indoor air outlets 13 are spaced apart in the vertical direction. This arrangement allows for optimal selection of the indoor air outlet 13 for air discharge based on the heat exchange mode, achieving better air delivery and enhancing indoor heat exchange. For example, in heating mode, since the hot air flows upward after exiting the indoor air outlet 13, air can be delivered through the lower indoor air outlet 13, thereby directing the hot air downward as much as possible and improving indoor heat exchange. In cooling mode, since the cold air flows downward after exiting the indoor air outlet 13, air can be delivered through the upper indoor air outlet 13, thereby directing the cold air upward as much as possible and improving indoor heat exchange. Furthermore, both indoor air outlets 13 are located on the front face 14 of the inner shell, increasing the vertical air supply range while also expanding the horizontal air supply range. Of course, in other embodiments, the two indoor air outlets 13 may also be spaced apart in the horizontal direction. Alternatively, the two indoor air outlets 13 may be located on the two inner shell side faces 15.

[0054] Please refer to Figure 3 and Figure 4 In one embodiment, the two centrifugal wind wheels 20 are spaced apart in the vertical direction. The air inlet side of the upper centrifugal wind wheel 20 is connected to the upper indoor air outlet 13, and the air inlet side of the lower centrifugal wind wheel 20 is connected to the lower indoor air outlet 13. That is, the two centrifugal wind wheels 20 are arranged in the vertical direction, which can reduce the size of the inner machine casing 10 in the left-right direction and the front-back direction, thereby reducing the area occupied by the inner machine casing 10 in the room. Moreover, the indoor air outlet 13 at the upper end can be placed in a higher position, so that in the cooling mode, the cold air flow can be sent to a higher position in the room. Of course, in other embodiments, the two wind wheels can also be spaced apart in the left-right direction.

[0055] In one embodiment, a single indoor air inlet 12 is provided, and the air inlet sides of both centrifugal impellers 20 are connected to the indoor air inlet 12. That is, the air inlet sides of the two centrifugal impellers 20 share a single indoor air inlet 12. This arrangement reduces the number of indoor air inlets 12 on the inner housing 10, simplifies the structure of the inner housing 10, and reduces production costs. Furthermore, when the indoor heat exchanger 30 is disposed inside the indoor air inlet 12, the same indoor heat exchanger 30 can be shared, reducing the number of indoor heat exchangers 30. This simplifies the structure, reduces the number of assembly steps, and improves production efficiency. Of course, in other embodiments, a separate indoor air inlet 12 can be provided on the inner housing 10 corresponding to each centrifugal impeller 20.

[0056] Furthermore, in one embodiment, the indoor air inlet 12 is located between the two centrifugal impellers 20, and both centrifugal impellers 20 are vertically spaced apart from the indoor air inlet 12. That is, the indoor air inlet 12 and the two indoor air outlets 13 are both located on the inner casing front surface 14, and the two centrifugal impellers 20 are offset from the indoor air inlet 12 in the front-to-back direction. That is, the orthographic projections of the two centrifugal impellers 20 on the inner casing front surface 14 are located on either side of the indoor air inlet 12. In this manner, when an indoor heat exchanger 30 is located inside the indoor air inlet 12, the indoor heat exchanger 30 is vertically spaced apart from the two centrifugal impellers 20. This prevents the indoor heat exchanger 30 and the centrifugal impellers 20 from sharing the front-to-back space of the inner casing 10, thereby reducing the front-to-back dimensions of the inner casing 10. Of course, in other embodiments, the indoor air inlet 12 may be located to the left or right of the two centrifugal impellers 20. Alternatively, the indoor air inlet 12 may be located on the inner casing side surface 15.

[0057] In one embodiment, one of the indoor air outlets 13 is located on the upper side of the upper centrifugal wind wheel 20, and the other indoor air outlet 13 is located on the lower side of the lower centrifugal wind wheel 20. Specifically, the upper indoor air outlet 13 is provided on the upper side of the corresponding centrifugal wind wheel 20, and the lower indoor air outlet 13 is provided on the lower side of the corresponding centrifugal wind wheel 20. This is equivalent to two centrifugal wind wheels 20 being located between two indoor air outlets 13. This can make the distance between the two indoor air outlets 13 larger, thereby further increasing the air supply range. In the embodiment in which the indoor air inlet 12 is located between the two indoor air outlets 13, this can also reduce the possibility of the outlet air flow sent out from the indoor air outlet 13 being directly sucked into the indoor air inlet 12. Of course, in other embodiments, the two indoor air outlets 13 can also be provided between the two wind wheels in the up and down directions.

[0058] In one embodiment, an outlet duct 17 is formed between the centrifugal impeller 20 and the indoor air outlet 13. In the air outlet direction, the outlet duct 17 gradually tilts away from the other indoor air outlet 13. This allows the two indoor air outlets 13 to be spaced further apart, thereby further increasing the air supply range. For example, when the two indoor air outlets 13 are spaced apart in the vertical direction, that is, the upper outlet duct 17 extends diagonally upward and the lower outlet duct 17 extends diagonally downward, the airflow from the upper indoor air outlet 13 can be delivered to a higher position in the room, while the airflow from the lower indoor air outlet 13 can be better delivered to the bottom surface, thereby improving the air supply effect in cooling mode and heating mode. In an embodiment where the indoor air inlet 12 is located between the two indoor air outlets 13, this allows the outlet airflow to be delivered diagonally upward and diagonally downward, further reducing the possibility that the outlet airflow from the indoor air outlet 13 will be directly sucked into the indoor air inlet 12. Of course, in other embodiments, the extension direction of the air outlet duct 17 may also be perpendicular to the front surface 14 of the inner shell.

[0059] In one embodiment, the indoor air duct 11 includes two independent sub-air ducts, each of which is provided with a centrifugal fan wheel 20, and the inner machine casing 10 is provided with two indoor air inlets 12. One of the indoor air outlets 13 and the indoor air inlet 12 is connected to one of the sub-air ducts, and the other indoor air outlet 13 and the other indoor air inlet 12 are connected to the other sub-air duct. In this way, the two centrifugal fans 20 can be ensured to be independent of each other, thereby ensuring that the air intake airflows of the two centrifugal fans 20 are independent of each other in the inner machine casing 10, avoiding the situation where the negative pressure generated by one of the centrifugal fans 20 is too large, resulting in a reduction in the air intake airflow of the other centrifugal fan wheel 20. This makes it easy to independently adjust the air outlet speeds of the two centrifugal fans 20, so that air supply with different speeds and different air volumes can be achieved in two different areas at the same time, and multiple air outlet modes can be achieved to meet different air supply needs. Among them, the indoor air outlets 13 of the two sub-ducts can be both arranged on the front face 14 of the inner shell, or can be both arranged on the same inner shell side face 15, or the indoor air outlets 13 of the two sub-ducts can be arranged on two inner shell side faces 15, or the indoor air outlet 13 of one sub-duct can be arranged on the front face 14 of the inner shell, and the indoor air outlet 13 of the other sub-duct can be arranged on the inner shell side face 15.

[0060] In one embodiment, the centrifugal impeller 20 includes a hub, a first blade group, and a second blade group. The axis of the hub extends in a left-right direction. The first blade group and the second blade group are disposed on opposite axial sides of the hub and are both disposed on the circumference of the hub. The sides of the first blade group and the second blade group facing away from each other each form an air inlet side. That is, the axis of the centrifugal impeller 20 extends in a left-right direction, and air inlet sides are formed on opposite axial sides of the centrifugal impeller 20. This reduces excessive energy loss caused by changes in airflow direction between the outlet side of the centrifugal impeller 20 and the indoor air outlet 13, and also increases the air intake and outlet volumes of the centrifugal impeller 20. In this embodiment, the indoor air inlet 12 can be disposed on the front face 14 of the inner shell, or on the side face 15 of the inner shell. For example, an indoor air inlet 12 can be provided on each of the two inner shell side faces 15. In the embodiment where two centrifugal impellers 20 are provided, the indoor air inlet 12 on the inner shell side 15 is in the shape of an elongated strip extending in the vertical direction, so that the air inlet sides of the two centrifugal impellers 20 on the same side share one indoor air inlet 12 .

[0061] Please refer to Figure 1 and Figure 2In one embodiment, the packaged air conditioner further includes an outer casing 40 and a compressor 50. The outer casing 40 is provided with an outdoor air duct that communicates with the outdoor space. The outer casing 40 is connected to the inner casing 10, and the compressor 50 is disposed within the inner casing 10. The compressor 50 is connected to the indoor heat exchanger 30 via a refrigerant pipeline. It should be noted that the "inner casing 10" and "outer casing 40" in the embodiment of the present invention do not limit the installation locations of the inner casing 10 and the outer casing 40. The packaged air conditioner can be installed as a whole indoors, in which case both the inner casing 10 and the outer casing 40 are installed indoors. Alternatively, the inner casing 10 can be disposed indoors, while the outer casing 40 can be at least partially extended outdoors. In order to allow the external unit casing 40 to extend outdoors, an installation opening is usually set on the wall so that the external unit casing 40 can extend outdoors from the installation opening. In this case, the space between the inner surface of the wall and the outer surface of the wall (installation opening) can be regarded as outdoors, that is, the space within the inner surface of the wall can be regarded as indoors, and the space outside the inner surface of the wall can be regarded as outdoors.

[0062] Please refer to Figure 2 、 Figure 7 and Figure 8 Typically, the outer casing 40 is provided with an outdoor air outlet 42 and an outdoor air inlet 41. Both the outdoor air outlet 42 and the outdoor air inlet 41 are connected to the outdoor air duct and are connected to the outdoor space. The outdoor air outlet 42 and the outdoor air inlet 41 can be directly connected to the outdoors or connected to the outdoors through connecting pipes. For example, when the integral air conditioner is placed indoors as a whole (i.e., the outer casing 40 is placed indoors), the outdoor air outlet 42 can be connected to the outdoors through a connecting pipe, and the outdoor air inlet 41 can be connected to the outdoors through another connecting pipe. It is also possible to partially extend the outer casing 40 to the outdoors, so that the outdoor air outlet 42 and the outdoor air inlet 41 are exposed to the outdoors.

[0063] When installing the integrated air conditioner, the inner housing 10 and compressor 50 can be placed indoors, while the outer housing 40 is extended outdoors. By locating the compressor 50 within the inner housing 10, the overall weight of the outer housing 40 is reduced. This reduces the pressure exerted by the outer housing 40 on the support frame when the outer housing 40 is installed on a floor above the second floor of a building. For example, when the integrated air conditioner is used in a two-story or more portable cabin (container house), installing the outer housing 40 outdoors can reduce the pressure exerted on the support frame. Furthermore, when the outer housing 40 is connected to the inner housing 10, a support frame is not even required to support the outer housing 40, making it easier to use in portable cabins or container houses. Of course, in other embodiments, the compressor 50 can also be located within the outer housing 40.

[0064] In one embodiment, the compressor 50 is located below the centrifugal impeller 20, which lowers the center of gravity of the inner housing 10 and improves the stability of the inner housing 10 when placed. Of course, in other embodiments, the centrifugal impeller 20 and the compressor 50 can also be distributed in the left-right direction (front-back direction).

[0065] In one embodiment, the integrated air conditioner further includes an isolation cover 70, which is disposed within the inner unit housing 10 and covers the compressor 50. The isolation cover 70 thus separates the space containing the compressor 50 from the rest of the inner unit housing 10, thereby reducing the amount of heat and noise generated by the compressor 50 that radiates into the room. To enhance the heat insulation effect of the isolation cover 70, the isolation cover 70 is made of a heat-insulating material. To enhance the effectiveness of the isolation cover 70 in blocking compression noise, the isolation cover 70 is made of a sound-insulating material.

[0066] Typically, the integrated air conditioner further comprises an outdoor fan 80 and an outdoor heat exchanger 60, both of which are arranged in the outdoor air duct. The outdoor fan 80 may be a centrifugal fan (see Figure 11 ), axial flow fan (refer to Figure 7 ) or a cross-flow fan, etc., the compressor 50 is connected to the indoor heat exchanger 30 and the outdoor heat exchanger 60 through a refrigerant pipeline.

[0067] In one embodiment, the outdoor heat exchanger 60 is located on the air inlet side of the outdoor fan 80. Specifically, the outdoor heat exchanger 60 is located between the air inlet side of the outdoor fan 80 and the outdoor air inlet 41. When outdoor air enters through the outdoor air inlet 41, it first undergoes heat exchange in the outdoor heat exchanger 60 before passing through the outdoor fan 80 and the outdoor air outlet 42 to be discharged outdoors. This reduces dust accumulation inside the outdoor heat exchanger 60 and, during rainy days, reduces the possibility of water entering the external unit casing 40, thereby improving safety. With this arrangement, multiple outdoor air inlets 41 can be provided on the external unit casing 40, with each outdoor air inlet 41 being located inside an outdoor heat exchanger 60, thereby enhancing heat exchange efficiency.

[0068] Please refer to Figure 9 In one embodiment, the outdoor heat exchanger 60 is located on the outlet side of the outdoor fan 80. Specifically, the outdoor heat exchanger 60 is located between the air inlet of the outdoor fan 80 and the outdoor air outlet 42. When outdoor air enters through the outdoor air inlet 41, it first passes through the outdoor fan 80, then sequentially through the outdoor heat exchanger 60 and the outdoor air outlet 42 to be discharged outdoors. This ensures that, in cooling mode, the outdoor air passing through the outdoor fan 80 is unheated, facilitating heat dissipation from the outdoor fan 80.

[0069] Please refer to Figure 1 and Figure 2The outer casing 40 has a back surface 43, a top surface 44 and two side surfaces 45. The back surface 43 is the surface of the outer casing 40 facing away from the inner casing 10. There are many positions of the outdoor air inlet 41 and the outdoor air outlet 42. For example, please refer to Figure 8 or Figure 9 In one embodiment, the outdoor air outlet 42 is provided on the rear surface 43 of the housing, and the outdoor air inlet 41 is provided on the side surface 45 of the housing. By providing the outdoor air outlet 42 on the rear surface 43 of the housing, the outdoor air outlet 42 is away from the wall, which reduces the possibility of the air outlet being blocked and ensures the air outlet effect. The outdoor air inlet 41 can be provided on one side surface 45 of the housing, or one outdoor air inlet 41 can be provided on each of the two side surfaces 45 of the housing.

[0070] In addition, please refer to Figure 7 In one embodiment, the outdoor air outlet 42 is provided on one of the housing sides 45, and the outdoor air inlet 41 is provided on the housing back 43. This also reduces the possibility of the air outlet being blocked and ensures the air outlet effect. In this embodiment, another outdoor air inlet 41 can also be provided on the other housing side 45.

[0071] In addition, please refer to Figure 10 or Figure 11 In one embodiment, the outdoor air outlet 42 is provided on the top surface 44 of the shell, and the outdoor air inlet 41 is provided on the side surface 45 of the shell or the back surface 43 of the shell. In this way, the outdoor air inlet 41 can be provided on the back surface 43 of the shell and the two side surfaces 45 of the shell, and an outdoor heat exchanger 60 can be provided on the inner side of each outdoor air inlet 41, which can increase the heat exchange area.

[0072] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An integrated air conditioner, used in mobile houses or container houses, characterized in that: include: An inner unit casing, the inner unit casing being provided with an indoor air duct, an indoor air inlet and an indoor air outlet, the indoor air inlet and the indoor air outlet being both connected to the indoor air duct, the indoor air inlet being provided at a side surface of the inner casing of the inner unit casing, and the indoor air outlet being provided at a front surface of the inner casing of the inner unit casing; a centrifugal fan wheel, the centrifugal fan wheel being arranged in the indoor air duct, with the front of the inner shell of the inner machine casing as the front, and the axis of the centrifugal fan wheel extending in the left-right direction; An outer housing is provided with an outdoor air duct and an outdoor air outlet connected to the outdoor air duct, the outer housing is connected to the back of the inner housing of the inner housing, and at least partially extends out of the installation opening of the wall of the mobile house or container house, so that the outdoor air outlet is exposed to the outdoor space; a compressor, the compressor being disposed in the inner machine casing; and An outdoor fan and an outdoor heat exchanger, both of which are arranged in the outdoor air duct; The integrated air conditioner includes two centrifugal wind wheels, and the front side of the inner shell of the inner machine casing is provided with an indoor air outlet corresponding to each centrifugal wind wheel; the air inlet sides of the two centrifugal wind wheels are connected to the indoor air inlet, and the air inlet sides of the centrifugal wind wheels are arranged toward the indoor air inlet.

2. The integrated air conditioner according to claim 1, wherein: An indoor heat exchanger is provided between the indoor air inlet and the air inlet side of the centrifugal wind wheel.

3. The integrated air conditioner according to claim 1, wherein: The two indoor air outlets are spaced apart in the up and down directions.

4. The integrated air conditioner according to claim 3, wherein: The two centrifugal wind wheels are spaced apart in the vertical direction.

5. The integrated air conditioner according to claim 4, wherein: The indoor air inlet is located between the two centrifugal wind wheels, and the two centrifugal wind wheels are spaced apart from the indoor air inlet in the up and down directions.

6. The integrated air conditioner according to claim 1, wherein: The centrifugal wind wheel includes a hub, a first blade group and a second blade group. The axis of the hub extends in the left-right direction. The first blade group and the second blade group are arranged on two opposite sides of the hub in the axial direction and are both arranged on the periphery of the hub. The sides of the first blade group and the second blade group away from each other form an air inlet side respectively.

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