Cabinet air conditioner

Abstract

The utility model discloses a cabinet type air conditioner, this cabinet type air conditioner includes: casing, heat exchanger, centrifugal fan, centrifugal fan sets up in the casing, and centrifugal fan is located the top of heat exchanger to send the wind after heat exchange with heat exchanger to the air outlet, centrifugal fan includes: air duct piece, and air duct piece is provided with air duct import and air duct export, and air duct import is connected with the air inlet, and air duct export is connected with the air outlet, drive motor, drive motor is located in the air duct piece, impeller, impeller sets up in the air duct piece, and impeller is connected with drive motor to send the wind of air duct import place to the air duct export under the driving of drive motor, wherein, the both sides of air duct piece along the axial direction of drive motor are provided with air duct import, and the impeller is multiple, and multiple impellers are connected respectively in the axial both ends of drive motor. Therefore, can reduce the resistance of air inlet, also can promote the air volume, thereby can realize the long -distance air supply of centrifugal fan.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a cabinet-type air conditioner. Background Technology

[0002] Household air conditioning units can be divided into two types based on their structure: unitary air conditioners and split air conditioners. Among them, the most commonly used type of split air conditioner is the cabinet air conditioner, which can avoid taking up space on the ceiling or wall.

[0003] The structural layout of household cabinet air conditioners generally cannot meet the needs of long-distance air delivery. However, there are many commercial applications of cabinet air conditioners in the market, including a small number of household applications, which require long-distance air delivery.

[0004] In existing technology, cabinet air conditioners can generally only provide air supply distance of no more than 15m. If the air supply distance is to be increased, the fan speed can only be increased, but the air volume cannot be increased. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a cabinet-type air conditioner that can reduce air intake resistance and increase air volume, thereby enabling long-distance air delivery by a centrifugal fan.

[0006] According to an embodiment of the present invention, a cabinet air conditioner includes: a casing having an air inlet and an air outlet, the air outlet being located above the air inlet; a heat exchanger disposed within the casing, positioned between and close to the air inlet, for exchanging heat with air entering from the air inlet; and a centrifugal fan disposed within the casing, positioned above the heat exchanger, for directing the air after heat exchange with the heat exchanger to the air outlet; the centrifugal fan includes: an air duct. The component includes an air duct with an inlet and an outlet, the inlet being connected to the air intake and the outlet being connected to the air outlet; a drive motor located within the air duct; and an impeller located within the air duct and connected to the drive motor to direct air from the inlet to the outlet under the drive of the motor. The air duct has inlets on both sides along the axial direction of the drive motor, and multiple impellers are connected to both ends of the drive motor's axial direction.

[0007] Therefore, the air duct components in this cabinet air conditioner are provided with air duct inlets on both sides along the axial direction of the drive motor, which can reduce the resistance of air intake and increase the air volume, thereby enabling the centrifugal fan to deliver air over long distances.

[0008] According to some embodiments of the present invention, the axial direction of the drive motor is the same as the width direction of the housing.

[0009] According to some embodiments of the present invention, the air duct component includes: a first sub-shell, wherein a first sub-inlet is provided on both sides along the axial direction of the drive motor, and the first sub-shell is provided with the air duct outlet; a second sub-shell, wherein the second sub-shell and the first sub-shell are disposed opposite to each other in the depth direction of the housing, and a second sub-inlet is provided on both sides along the axial direction of the drive motor, wherein the first sub-inlet and the second sub-inlet on the same side of the air duct component together form the air duct inlet.

[0010] According to some embodiments of the present invention, the lower part of the first sub-shell is disposed opposite to the second sub-shell, the upper part of the first sub-shell is constructed with an air outlet and a partition, the air outlet forms the air duct outlet, and the partition is disposed on the outer peripheral wall of the air outlet and located above the second sub-shell.

[0011] According to some embodiments of the present invention, the air duct component further includes: a motor bracket, the motor bracket being integrally formed in one of the first sub-shell and the second sub-shell, and the drive motor being mounted on the motor bracket.

[0012] According to some embodiments of the present invention, the first sub-shell is provided with a first pivot portion and a first snap-fit ​​portion, the first pivot portion and the first snap-fit ​​portion being located on opposite sides of the first sub-inlet; the second sub-shell is provided with a second pivot portion and a second snap-fit ​​portion, the second pivot portion and the second snap-fit ​​portion being located on opposite sides of the second sub-inlet, the first pivot portion and the second pivot portion being disposed opposite to each other, and the first snap-fit ​​portion and the second snap-fit ​​portion engaging in a snap-fit ​​cooperation.

[0013] According to some embodiments of the present invention, motor shafts are respectively provided at both ends of the drive motor, and each motor shaft is provided with at least one impeller.

[0014] According to some embodiments of the present invention, the housing includes: a main housing; the air outlet includes a top air outlet and a front air outlet, the top air outlet being disposed on the top wall of the main housing and the front air outlet being disposed on the front wall of the main housing; and a cover member, the cover member being detachably disposed on one of the top air outlet and the front air outlet, so that the other of the top air outlet and the front air outlet can dissipate air.

[0015] According to some embodiments of the present invention, the cabinet air conditioner further includes: an air outlet pipe, which is detachably disposed in the other of the top air outlet and the front air outlet.

[0016] According to some embodiments of the present invention, the air inlet is located at the lower part of the casing, and the heat exchanger is inclinedly arranged inside the casing.

[0017] Additional aspects and advantages of this 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. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural schematic diagram of a cabinet-type air conditioner according to an embodiment of the present utility model; Figure 2 yes Figure 1 A cross-sectional view along the AA direction; Figure 3 This is a side view of a cabinet air conditioner according to an embodiment of the present utility model; Figure 4 yes Figure 3 A cross-sectional view along the BB direction; Figure 5 This is a front view of a cabinet-type air conditioner according to an embodiment of the present utility model; Figure 6 yes Figure 5 A cross-sectional view along the CC direction; Figure 7 This is a schematic diagram of the structure of a centrifugal fan according to an embodiment of the present utility model; Figure 8 This is a structural schematic diagram of the air duct component according to an embodiment of the present utility model; Figure 9 This is a schematic diagram of the structure of the air duct component containing an impeller according to an embodiment of the present utility model; Figure 10 This is a schematic diagram of the structure of the first subshell containing a partition according to an embodiment of the present utility model; Figure 11 This is a schematic diagram of the internal structure of a centrifugal fan according to an embodiment of the present utility model; Figure 12 This is a structural schematic diagram of the air duct passing through the front air outlet according to an embodiment of the present utility model; Figure 13 This is a schematic diagram of the structure of the air duct passing through the top air outlet according to an embodiment of the present utility model.

[0019] Figure label: 100. Cabinet-type air conditioner; 1. Housing; 11. Air inlet; 12. Air outlet; 2. Heat exchanger; 3. Centrifugal fan; 31. Duct component; 311. Duct inlet; 312. Duct outlet; 313. First sub-casing; 3131. First sub-inlet; 3132. Air outlet; 3133. Partition; 3134. First pivot part; 3135. First snap-fit ​​part; 314. Second sub-shell; 3141. Second sub-inlet; 3142. Second pivot section; 3143. Second locking section; 4. Drive motor; 5. Impeller; 6. Motor bracket; 7. Main casing; 71. Top air outlet; 72. Front air outlet; 8. Cover; 9. Air outlet duct. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0021] The following is for reference. Figures 1-13 A cabinet-type air conditioner 100 according to an embodiment of the present utility model is described.

[0022] Reference Figures 1-5 As shown, the cabinet air conditioner 100 of this utility model embodiment includes: a casing 1, a heat exchanger 2, and a centrifugal fan 3. The casing 1 is provided with an air inlet 11 and an air outlet 12. The air inlet 11 facilitates the entry of air, and the air outlet 12 facilitates the exit of air. The air outlet 12 is located above the air inlet 11, so that air can enter from the air inlet 11 at the bottom of the casing 1 and then exit from the air outlet 12 at the top of the casing 1, thereby forming a bottom-up circulation loop.

[0023] Furthermore, the heat exchanger 2 is installed inside the casing 1, which provides an installation position for the heat exchanger 2. The heat exchanger 2 is located between the air inlet 11 and the air outlet 12, so that the air entering from the air inlet 11 can be heat exchanged through the heat exchanger 2 and then flow out from the air outlet 12, thereby avoiding the direct discharge of air without heat exchange.

[0024] Furthermore, the heat exchanger 2 is positioned close to the air inlet 11, which allows the heat exchanger 2 to exchange heat with the air entering from the air inlet 11 and also avoids the heat exchanger 2 from blocking the air outlet 12, thus making the air outlet smoother.

[0025] Furthermore, the centrifugal fan 3 is installed inside the casing 1 and is located above the heat exchanger 2. Since the volume of the heat exchanger 2 is larger than that of the centrifugal fan 3, placing the heat exchanger 2 below the centrifugal fan 3 can avoid the heat exchanger 2 blocking the air outlet of the centrifugal fan 3, thereby improving the air outlet efficiency of the centrifugal fan 3.

[0026] Furthermore, the centrifugal fan 3 is located above the heat exchanger 2, so the condensate produced by the heat exchanger 2 naturally flows downwards. Because the centrifugal fan 3 is located above the heat exchanger 2, it is positioned in a dry airflow zone. If the centrifugal fan 3 were located below the heat exchanger 2, the condensate would easily drip into the fan chamber of the centrifugal fan 3 due to gravity, causing the impeller 5 to corrode. This arrangement effectively protects the centrifugal fan 3.

[0027] Furthermore, the centrifugal fan 3 includes: a duct component 31, a drive motor 4, and an impeller 5. The duct component 31 is provided with a duct inlet 311 and a duct outlet 312. The duct inlet 311 is connected to the air inlet 11, so that the air entering from the air inlet 11 can enter the duct component 31 through the duct inlet 311. The duct outlet 312 is connected to the air outlet 12, so that the air flowing out of the duct outlet 312 can easily flow out of the air outlet 12.

[0028] Moreover, the drive motor 4 is located inside the air duct component 31, and the impeller 5 is also located inside the air duct component 31. In this way, the air duct component 31 can not only provide installation for the drive motor 4 and the impeller 5, but also protect the drive motor 4 and the impeller 5.

[0029] Furthermore, the impeller 5 is connected to the drive motor 4, so that the drive motor 4 can drive the impeller 5 to rotate, thereby sending the air at the air duct inlet 311 to the air duct outlet 312 under the drive of the drive motor 4, and also accelerating the air flow speed.

[0030] The air duct component 31 has air duct inlets 311 on both sides along the axial direction of the drive motor 4. By increasing the number of air duct inlets 311, the air intake area can be increased, the air intake resistance can be reduced, and the airflow field can be made more uniform, thereby improving the heat exchange efficiency.

[0031] Moreover, the air duct component 31 is provided with air duct inlets 311 on both sides, which can make the air duct component 31 form bidirectional air intake. Compared with single-sided air intake, under the same impeller 5 diameter, the air volume carrying capacity of the air duct component 31 with air intake on both sides can reach 1.5 to 1.8 times that of single-sided air intake. Thus, under the same conditions, the air volume and static pressure resistance are significantly improved, thereby enabling the centrifugal fan 3 to deliver air over long distances.

[0032] Furthermore, there are multiple impellers 5, each connected to one of the two axial ends of the drive motor 4. This allows the drive motor 4 to simultaneously drive multiple impellers 5, further increasing the airflow. If one impeller 5 fails, another impeller 5 can still maintain a portion of the airflow, thus improving the stability of the centrifugal fan 3.

[0033] Therefore, the air duct component 31 in the cabinet air conditioner 100 is provided with air duct inlets 311 on both sides along the axial direction of the drive motor 4, which can reduce the resistance of air intake and increase the air volume, thereby enabling the centrifugal fan 3 to deliver air over long distances.

[0034] According to some embodiments of the present invention, the axial direction of the drive motor 4 is the same as the width direction of the housing 1.

[0035] By arranging the drive motor 4 along the width direction of the housing 1 (i.e., the left-right direction of the housing 1), the space in the width direction of the housing 1 can be fully utilized, while reducing the space occupied by the drive motor 4 in the height direction of the housing 1, thereby reducing the height of the housing 1. Furthermore, the axial direction of the drive motor 4 is the same as the width direction of the housing 1, which enables the centrifugal fan 3 to draw air in the width direction of the housing 1, thus allowing the air drawn by the centrifugal fan 3 to cover the width direction of the housing 1.

[0036] According to some embodiments of this utility model, such as Figures 7-10 As shown, the air duct component 31 includes a first sub-shell 313 and a second sub-shell 314. The first sub-shell 313 has first sub-inlets 3131 on both sides along the axial direction of the drive motor 4. This allows air to enter through the first sub-inlets 3131 on both sides of the first sub-shell 313.

[0037] Furthermore, the first sub-shell 313 is provided with an air duct outlet 312, which facilitates the air entering the first sub-shell 313 to flow out through the air duct outlet 312. The second sub-shell 314 is arranged opposite to the first sub-shell 313 in the depth direction of the housing 1, which is the front-to-back direction of the housing 1. The second sub-shell 314 has a second sub-inlet 3141 on both sides along the axial direction of the drive motor 4. The arrangement of the second sub-inlet 3141 facilitates the entry of air through the second sub-inlet 3141 on both sides of the second sub-shell 314.

[0038] Furthermore, the first sub-inlet 3131 and the second sub-inlet 3141 on the same side of the duct component 31 together form the duct inlet 311. This improves the uniformity and stability of the incoming airflow, whereas a single large-area duct inlet 311 is prone to uneven airflow distribution due to edge effects. By splitting the duct inlet 311 into the first sub-inlet 3131 and the second sub-inlet 3141, the first sub-inlet 3131 and the second sub-inlet 3141 can be arranged opposite each other, which can guide the airflow into the impeller 5 more evenly and reduce local vortices.

[0039] According to some embodiments of this utility model, such as Figures 7-10As shown, the lower part of the first sub-shell 313 is disposed opposite to the second sub-shell 314. The upper part of the first sub-shell 313 is constructed with an air outlet 3132 and a partition 3133. The air outlet 3132 forms an air duct outlet 312. Thus, the air duct outlet 312 can facilitate the air entering from the air duct inlet 311 to flow out from the air duct outlet 312 after being accelerated by the impeller 5.

[0040] Furthermore, the baffle 3133 is disposed on the outer peripheral wall of the air outlet 3132, which facilitates the fixed connection between the baffle 3133 and the inner wall of the housing 1, thereby making the connection between the air duct component 31 and the housing 1 more stable and secure.

[0041] Moreover, the partition 3133 is located above the second sub-shell 314. The partition 3133 can separate the positive pressure zone and the negative pressure zone formed in the air duct inside the casing 1. This can ensure that the air duct inlet 311 of the air duct component 31 has sufficient negative pressure and the air duct outlet 312 of the air duct component 31 has sufficient positive pressure, thereby making the centrifugal fan 3 run more efficiently.

[0042] According to some embodiments of this utility model, such as Figures 4-10 As shown, the air duct component 31 also includes a motor bracket 6, which is integrally formed in one of the first sub-shell 313 and the second sub-shell 314, and the drive motor 4 is mounted on the motor bracket 6.

[0043] The motor bracket 6 is integrally formed in one of the first sub-shell 313 and the second sub-shell 314. In other words, the motor bracket 6 can be integrally formed with the first sub-shell 313. In this way, the motor bracket 6 and the first sub-shell 313 can become a single rigid body, thereby avoiding gaps and loosening in the connection between the motor bracket 6 and the first sub-shell 313. It can also effectively suppress the transmission of high-frequency vibrations during the operation of the drive motor 4 and reduce the risk of resonance.

[0044] Alternatively, the motor bracket 6 can be integrally formed with the second sub-shell 314. In this way, the motor bracket 6 and the second sub-shell 314 can become a single rigid body, thereby avoiding gaps and loosening in the connection between the motor bracket 6 and the second sub-shell 314, and effectively suppressing the transmission of high-frequency vibrations during the operation of the drive motor 4, reducing the risk of resonance.

[0045] Furthermore, the one-piece molded air duct component 31 has a volute structure, with the first sub-shell 313, partition plate 3133, and motor bracket 6 forming a single unit. This saves space in the width direction of the housing 1, thus achieving the requirement of large air volume in a small space. Additionally, the drive motor 4 is mounted on the motor bracket 6, providing a mounting position for the drive motor 4 and facilitating its secure installation.

[0046] Furthermore, the partition 3133 can also be fixedly connected to the drive motor 4. At the same time, the motor bracket 6 is fixedly connected to the drive motor 4. This allows the drive motor 4 to be fixed at 90 degrees in two vertical directions, thereby making the drive motor 4 more securely fixed.

[0047] According to some embodiments of this utility model, such as Figure 7 As shown, the first sub-shell 313 is provided with a first pivot portion 3134 and a first engaging portion 3135, which are located on opposite sides of the first sub-inlet 3131. The second sub-shell 314 is provided with a second pivot portion 3142 and a second engaging portion 3143, which are located on opposite sides of the second sub-inlet 3141. The first pivot portion 3134 and the second pivot portion 3142 are arranged opposite to each other, and the first engaging portion 3135 and the second engaging portion 3143 are engaged in a locking fit.

[0048] Specifically, the top of the first sub-shell 313 is provided with a first pivot part 3134, and correspondingly, the top of the second sub-shell 314 is provided with a second pivot part 3142. The first pivot part 3134 can be configured as a rotating hole, and the second pivot part 3142 can be configured as a rotating shaft. In this way, the second pivot part 3142 can rotate relative to the first pivot part 3134 through the first pivot part 3134, so that the second sub-shell 314 can rotate relative to the first sub-shell 313. This makes it easier to open the air duct component 31 and also facilitates the maintenance of the drive motor 4 inside the air duct component 31.

[0049] Furthermore, the bottom of the first sub-shell 313 is provided with a first snap-fit ​​portion 3135, and correspondingly, the bottom of the second sub-shell 314 is provided with a second snap-fit ​​portion 3143. The first snap-fit ​​portion 3135 can be configured as a buckle, and the second snap-fit ​​portion 3143 can be configured as a slot. In this way, the buckle and the slot engage with each other, thereby facilitating the installation and removal of the first snap-fit ​​portion 3135 and the second snap-fit ​​portion 3143.

[0050] According to some embodiments of the present invention, motor shafts are respectively provided at both ends of the drive motor 4, and each motor shaft is provided with at least one impeller 5.

[0051] The drive motor 4 has motor shafts at both ends of its axial direction, so that impellers 5 can be connected to both ends of the drive motor 4 simultaneously. In this way, the drive motor 4 can drive the impellers 5 at both ends of its axial direction to rotate synchronously, thereby avoiding the shaking of multiple impellers 5 during rotation.

[0052] Furthermore, each motor shaft is equipped with at least one impeller 5. That is to say, each motor shaft can be equipped with one impeller 5, or each motor shaft can be equipped with multiple impellers 5. Under the same drive motor 4 power, the total air volume is close to twice that of a single impeller 5. In this way, synchronous air supply on both sides of the air duct component 31 can be achieved, and the air volume and heat exchange efficiency can also be improved.

[0053] Furthermore, when impellers 5 are symmetrically arranged at both ends of the drive motor 4, the axial thrust generated by the impellers 5 is opposite in direction and similar in magnitude, and the resultant force is close to zero. This can make the load distribution more uniform. Compared with a single impeller 5, it can reduce vibration and noise, thereby extending its service life.

[0054] According to some embodiments of this utility model, such as Figures 1-13 As shown, the housing 1 includes a main housing 7 and a cover 8. The air outlet 12 includes a top air outlet 71 and a front air outlet 72. The top air outlet 71 is located on the top wall of the main housing 7. In this way, the centrifugal fan 3 can deliver the air after the heat exchanger 2 has completed heat exchange to the top air outlet 71, which can easily meet the customer's top air outlet needs.

[0055] Furthermore, the front air outlet 72 is located on the front wall of the main casing 7. In this way, the centrifugal fan 3 can deliver the air after the heat exchanger 2 has completed heat exchange to the front air outlet 72, thereby facilitating the fulfillment of the customer's front air outlet needs.

[0056] Furthermore, the cover 8 is detachably disposed on one of the top air outlet 71 and the front air outlet 72, thereby allowing air to exit from the other of the two outlets. That is, the cover 8 is detachably disposed on the top air outlet 71, or the cover 8 is detachably disposed on the front air outlet 72. When the cover 8 is removed from the front air outlet 72 to cover the top air outlet 71, air can exit from the front air outlet 72, thus meeting the customer's air outlet requirements for the front air outlet 72. When the cover 8 is removed from the top air outlet 71 to cover the front air outlet 72, air can exit from the top air outlet 71, thus meeting the customer's air outlet requirements for the top air outlet 72.

[0057] According to some embodiments of this utility model, such as Figure 12 and Figure 13 As shown, the cabinet air conditioner 100 also includes an air outlet duct 9, which is detachably disposed in one of the top air outlet 71 and the front air outlet 72.

[0058] The air outlet duct 9 is detachably installed at either the top air outlet 71 or the front air outlet 72. That is, the air outlet duct 9 is detachably installed at the top air outlet 71, facilitating its installation and removal at the top air outlet 71. Alternatively, the air outlet duct 9 is detachably installed at the front air outlet 72, facilitating its installation and removal at the front air outlet 72.

[0059] When the air outlet 9 is inserted into the top air outlet 71, due to the relatively long overall length of the air outlet 9, long-distance air delivery can be achieved through the top air outlet 71. When the air outlet 9 is inserted into the front air outlet 72, due to the relatively long overall length of the air outlet 9, long-distance air delivery can be achieved through the front air outlet 72.

[0060] Meanwhile, the drive motor 4 can effectively dissipate heat inside the air duct component 31. When long-distance air supply is required or air supply through the air duct 9 is required in certain locations, the air duct 9 can be connected to the top or front of the casing 1 to achieve long-distance air supply and meet the static pressure requirements of conventional air duct machines, satisfying different customer needs.

[0061] According to some embodiments of this utility model, such as Figure 2 As shown, the air inlet 11 is located at the lower part of the casing 1, and the heat exchanger 2 is inclined inside the casing 1.

[0062] The air inlet 11 is located at the lower part of the housing 1, which facilitates the entry of indoor air from the lower part of the housing 1. Moreover, the air inlet 11 and the air outlet 12 of the housing 1 are spaced apart to avoid interference between the air inlet 11 and the air outlet 12.

[0063] Furthermore, the heat exchanger 2 is inclined inside the casing 1, which can extend the length of the heat exchanger 2 and thus increase the heat exchange area of ​​the heat exchanger 2.

[0064] Furthermore, the heat exchanger 2 inside the cabinet air conditioner 100 is placed obliquely below the casing 1, which can avoid static pressure loss caused by the obstruction of the heat exchanger 2. The heat exchanger 2 is driven by a drive motor 4 to drive the centrifugal fan 3 with air intake on both sides. Two impellers 5 can be set inside the centrifugal fan 3 with air intake on both sides. The drive motor 4 is inside the air duct component 31, so that the width direction of the casing 1 is consistent with the existing conventional cabinet air conditioner. The drive motor 4 drives the impellers 5 to blow out air directly through the suction method, which can achieve the characteristic of high static pressure, thereby meeting the needs of long-distance air delivery.

[0065] Specifically, the suction design ensures uniform airflow and improves heat exchange efficiency. At the same time, the heat exchanger 2 is placed obliquely below the casing 1, which reduces the resistance of the heat exchanger 2 to the airflow. After passing through the heat exchanger 2, the airflow enters through the centrifugal fan 3 on both sides. The fan 3 uses a motor, two impellers 5 and a duct component, which reduces the size of the impeller 2 in the width direction of the casing 1 and meets the size requirements of 550mm-660mm for conventional vertical cabinet air conditioners.

[0066] Furthermore, the airflow can be drawn in from the front, sides and bottom frame of the bottom of the casing 1, and after entering the airflow, it passes through the obliquely arranged heat exchanger 2, and then is sent out by the centrifugal fans 3 that enter the airflow from both sides above the casing 1.

[0067] Furthermore, the cabinet air conditioner 100 includes an indoor unit and an outdoor unit, which are connected by pipes to transfer refrigerant. The indoor unit includes an indoor heat exchanger and an indoor fan. The outdoor unit includes a compressor, a four-way valve, an outdoor heat exchanger, an outdoor fan, and an expansion valve. The compressor, outdoor heat exchanger, expansion valve, and indoor heat exchanger, connected in sequence, form a refrigerant circuit. The refrigerant circulates in the refrigerant circuit and exchanges heat with the air through the outdoor and indoor heat exchangers to achieve the air conditioner's cooling or heating mode. The compressor is configured to compress the refrigerant, so that the low-pressure refrigerant is compressed into high-pressure refrigerant.

[0068] The outdoor heat exchanger is configured to exchange heat between outdoor air and refrigerant transported within it. For example, in the cooling mode of the cabinet air conditioner 100, the outdoor heat exchanger operates as a condenser, causing the refrigerant compressed by the compressor to dissipate heat to the outdoor air and condense. In the heating mode of the cabinet air conditioner 100, the outdoor heat exchanger operates as an evaporator, causing the depressurized refrigerant to absorb heat from the outdoor air and evaporate.

[0069] In some embodiments, the outdoor heat exchanger further includes fins to increase the contact area between the outdoor air and the refrigerant transported in the outdoor heat exchanger, thereby improving the heat exchange efficiency between the outdoor air and the refrigerant.

[0070] The outdoor fan is configured to draw outdoor air into the outdoor unit through the outdoor air inlet and expel the outdoor air, after it has been heated by the outdoor heat exchanger, through the outdoor air outlet. The outdoor fan provides power for the flow of outdoor air.

[0071] An expansion valve connects the outdoor and indoor heat exchangers. The opening degree of the expansion valve regulates the refrigerant pressure flowing through both heat exchangers, thereby regulating the refrigerant flow rate between them. The flow rate and pressure of the refrigerant flowing between the outdoor and indoor heat exchangers affect their heat exchange performance. The expansion valve can be an electronic valve, and its opening degree is adjustable to control the refrigerant flow rate and pressure.

[0072] The four-way valve is connected to the refrigerant circuit and is configured to switch the flow direction of the refrigerant in the refrigerant circuit so that the cabinet air conditioner 100 can perform cooling mode or heating mode.

[0073] The indoor heat exchanger is configured to exchange heat between indoor air and refrigerant transported within it. For example, in the cooling mode of the air conditioner, the indoor heat exchanger operates as an evaporator, causing the refrigerant, after dissipating heat from the outdoor heat exchanger, to absorb heat from the indoor air and evaporate. In the heating mode of the air conditioner, the indoor heat exchanger operates as a condenser, causing the refrigerant, after absorbing heat from the outdoor heat exchanger, to dissipate heat to the indoor air and condense.

[0074] In some embodiments, the indoor heat exchanger further includes fins to increase the contact area between indoor air and the refrigerant transported in the indoor heat exchanger, thereby improving the heat exchange efficiency between the indoor air and the refrigerant. An indoor fan is configured to draw indoor air into the indoor unit through the air inlet and to discharge the indoor air, after heat exchange with the indoor heat exchanger, through the air outlet of the indoor unit. The indoor fan provides power for the airflow.

[0075] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0076] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0077] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cabinet-type air conditioner, comprising: The housing has an air inlet and an air outlet, with the air outlet located above the air inlet; A heat exchanger is disposed inside the housing and located between the air inlet and the air outlet and close to the air inlet, so as to exchange heat with the air entering from the air inlet. A centrifugal fan is disposed inside the casing and located above the heat exchanger to deliver the air after heat exchange with the heat exchanger to the air outlet. Its features are, The centrifugal fan includes: The air duct component is provided with an air duct inlet and an air duct outlet, the air duct inlet is connected to the air inlet, and the air duct outlet is connected to the air outlet. A drive motor, which is located inside the air duct component; An impeller is disposed within the air duct component and is connected to the drive motor to deliver air from the air duct inlet to the air duct outlet under the drive of the drive motor. The air duct component has air duct inlets on both sides along the axial direction of the drive motor, and there are multiple impellers, which are respectively connected to both ends of the axial direction of the drive motor.

2. The cabinet-type air conditioner according to claim 1, characterized in that, The axial direction of the drive motor is the same as the width direction of the housing.

3. The cabinet-type air conditioner according to claim 1, characterized in that, The air duct component includes: The first sub-shell has a first sub-inlet on both sides along the axial direction of the drive motor, and the first sub-shell has the air duct outlet. The second sub-shell is disposed opposite to the first sub-shell in the depth direction of the housing. The second sub-shell has a second sub-inlet on both sides along the axial direction of the drive motor. The first sub-inlet and the second sub-inlet on the same side of the air duct component together form the air duct inlet.

4. The cabinet-type air conditioner according to claim 3, characterized in that, The lower part of the first sub-shell is disposed opposite to the second sub-shell. The upper part of the first sub-shell is constructed with an air outlet and a partition. The air outlet forms the air duct outlet. The partition is disposed on the outer peripheral wall of the air outlet and is located above the second sub-shell.

5. The cabinet-type air conditioner according to claim 3, characterized in that, The air duct component also includes: A motor bracket is integrally formed in one of the first sub-shell and the second sub-shell, and the drive motor is mounted on the motor bracket.

6. The cabinet-type air conditioner according to claim 3, characterized in that, The first sub-shell is provided with a first pivot portion and a first locking portion, which are located on opposite sides of the first sub-inlet; The second sub-shell is provided with a second pivot portion and a second locking portion. The second pivot portion and the second locking portion are located on opposite sides of the second sub-inlet. The first pivot portion and the second pivot portion are disposed opposite to each other, and the first locking portion and the second locking portion are engaged in a locking fit.

7. The cabinet-type air conditioner according to claim 1, characterized in that, The drive motor has motor shafts at both ends of its axial direction, and each motor shaft has at least one impeller.

8. The cabinet-type air conditioner according to claim 1, characterized in that, The housing includes: The main housing has an air outlet including a top air outlet and a front air outlet. The top air outlet is located on the top wall of the main housing, and the front air outlet is located on the front wall of the main housing. A cover, which is detachably disposed on one of the top air outlet and the front air outlet, so that the other of the top air outlet and the front air outlet can dissipate air.

9. The cabinet-type air conditioner according to claim 8, characterized in that, Also includes: An air outlet duct, which is detachably disposed in one of the top air outlet and the front air outlet.

10. The cabinet-type air conditioner according to claim 1, characterized in that, The air inlet is located at the lower part of the casing, and the heat exchanger is inclined inside the casing.

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