Side air outlet window type air conditioner

Abstract

The utility model provides a side air outlet window type air conditioner which comprises an air conditioner shell, an indoor side space and an outdoor side space are arranged in the air conditioner shell, a first fan used for driving indoor side airflow to flow through an indoor side heat exchanger is arranged in the indoor side space, and a second fan is arranged in the outdoor side space. The first fan comprises a centrifugal volute and centrifugal fan blades located in the centrifugal volute, the first motor is used for independently driving the centrifugal fan blades to rotate, the second motor is used for independently driving the second fan to rotate, and by taking the using direction of the side air outlet window type air conditioner as a reference, the axial projection of the rotating shaft of the first fan is larger than the axial projection of the rotating shaft of the second fan. A side air outlet is formed in the area, located on the left side or the right side of the indoor heat exchanger, of the air conditioner shell. According to the utility model, the rotating shaft for driving the first fan and the indoor heat exchanger can be centered left and right, so that the heat exchange efficiency of the indoor heat exchanger is ensured to be at a higher level.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning technology, specifically relating to a side-discharge air conditioner. Background Technology

[0002] Traditional side-discharge window air conditioner ( Figure 18 The chassis is equipped with an evaporator, condenser, and rear partition. The motor is mounted on the rear partition, with centrifugal and axial fan blades at both ends. When the unit is turned on and starts in cooling / heating mode, the compressor and motor start working. The motor simultaneously drives the indoor centrifugal fan blades and the outdoor axial fan blades. At this time, the indoor and outdoor fan blades rotate at the same speed. Since the indoor centrifugal fan blades and outdoor axial fan blades of traditional side-discharge air conditioners share the same motor shaft, when the outdoor axial fan blades are relatively centered with the condenser (outdoor heat exchanger), the relative position of the indoor centrifugal fan blades and the evaporator (indoor heat exchanger) is off-center. That is, the indoor centrifugal fan blades and the indoor heat exchanger are not centered. This results in a smaller air intake in the off-center area far from the center of the indoor heat exchanger, reducing the heat exchange efficiency of the indoor heat exchanger. In other words, the heat exchange efficiency of the indoor heat exchanger is not maximized, which is not conducive to the development of high-efficiency models. Utility Model Content

[0003] Therefore, this utility model provides a side-discharge window type air conditioner, which can overcome the technical problem in the related technology that the indoor side centrifugal fan blades and the indoor side heat exchanger are not aligned, resulting in a smaller air intake area in the off-center area far from the center of the indoor side heat exchanger, which reduces the heat exchange efficiency of the indoor side heat exchanger. In other words, the heat exchange efficiency of the indoor side heat exchanger is not maximized, which is not conducive to the development of high-efficiency models.

[0004] To address the aforementioned issues, this utility model provides a side-discharge window-type air conditioner, comprising an air conditioner housing. The air conditioner housing contains an indoor space and an outdoor space. A first fan is installed in the indoor space to drive indoor airflow through an indoor heat exchanger. A second fan is installed in the outdoor space. The first fan includes a centrifugal volute and centrifugal blades within the volute, as well as a first motor and a second motor. The first motor independently drives the centrifugal blades to rotate, and the second motor independently drives the second fan to rotate. Taking the orientation of the side-discharge window-type air conditioner as a reference, the axial projection along the rotation axis of the first fan coincides with the midpoint of the left and right widths of the indoor heat exchanger. A side air outlet is formed on the area to the left or right of the indoor heat exchanger from the air conditioner housing.

[0005] In some embodiments, the centrifugal volute has a volute wall near the second fan, the volute wall dividing the interior space of the air conditioner housing into an indoor space and an outdoor space.

[0006] In some embodiments, the first motor is mounted on the side of the volute wall located in the outdoor space.

[0007] In some embodiments, a first mounting hole for assembling the first motor is formed on the wall of the volute, and a first waterproof cover is provided around the opening of the first mounting hole in the outdoor space. The first motor is equipped with a motor drive motherboard.

[0008] In some embodiments, the air conditioner housing includes a chassis at its bottom, a first bracket is provided on the chassis corresponding to the outdoor space, the first bracket has a mounting groove for assembling the first motor, a downwardly bent waterproof plate is formed at the top of the first bracket, the waterproof plate is located on the side of the first bracket closer to the second fan, and the first motor is equipped with a motor drive main board, the motor drive main board is located on the side of the waterproof plate away from the second fan.

[0009] In some embodiments, the air conditioner housing includes a chassis at its bottom, and a second bracket and an outdoor heat exchanger are provided on the chassis corresponding to the outdoor space. The second bracket has a second mounting hole for assembling the second motor, and a fin fastening clamp is formed at the top of the second bracket. The outdoor heat exchanger is bent and includes at least two rows of heat exchange fins arranged inside and outside. The fin fastening clamp can clamp the top of the outdoor heat exchanger on the windward and leeward sides to ensure that the gap between each row of heat exchange fins in the outdoor heat exchanger is maintained at a target value.

[0010] In some embodiments, the fin fastening clip includes a first fin that mates with the windward side and a second fin that mates with the leeward side, the first fin and the second fin being arranged parallel and spaced apart, and the free ends of the first fin and the second fin forming a flared structure; and / or, a screw boss that is detachably connected to the air conditioner housing is formed on the top end face of the second bracket.

[0011] In some embodiments, the second bracket is further provided with a ventilation hole in the upper region of the second mounting hole, and the height of the free ends of the first and second pieces is higher than the top inner wall of the ventilation hole.

[0012] In some embodiments, a photovoltaic control component for use with a photovoltaic power generation array is also assembled on the outer wall of the air conditioner housing. The photovoltaic control component includes a photovoltaic main control board, and the heat sink of the photovoltaic main control board is located in the outdoor space.

[0013] In some embodiments, the photovoltaic control component is assembled on the top side wall of the air conditioner housing, and a second waterproof cover is also assembled on the top side wall. The second waterproof cover covers the outside of the photovoltaic control component. A through hole is formed on the top side wall, and the radiator extends into the outdoor space through the through hole.

[0014] The side-discharge window type air conditioner provided by this utility model has the following beneficial effects:

[0015] This invention improves upon the existing technology of coaxial drive for indoor and outdoor fans in side-discharge window-type air conditioners by replacing it with independent drive for indoor and outdoor fans. This eliminates the constraint of the placement of the first fan (located in the indoor space) on the second fan (located in the outdoor space), ensuring that the rotation axis of the first fan is aligned with the indoor heat exchanger. This guarantees a high level of heat exchange efficiency for the indoor heat exchanger, which is beneficial for the development of high-efficiency models. Furthermore, since the first and second fans are independently driven by their respective motors, their rotation speeds can be optimally matched to the heat exchange efficiency of the corresponding indoor and outdoor heat exchangers, resulting in superior overall performance. Moreover, various combinations of different fan speeds can achieve even better energy efficiency and noise reduction, facilitating the implementation of AI functions in the air conditioner, enhancing product competitiveness, eliminating the problem of excessive noise in side-discharge window-type air conditioners caused by mismatched indoor and outdoor fan speeds, and improving user comfort. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a side-discharge air conditioner according to one embodiment of the present invention. Some parts such as the air conditioner casing are omitted in the figure to show the layout of the internal components.

[0018] Figure 2 yes Figure 1 A three-dimensional structural diagram (appearance) of a center-side air outlet type air conditioner.

[0019] Figure 3 yes Figure 2 A three-dimensional structural diagram of the air conditioner casing of a side-vent air conditioner, with some parts omitted.

[0020] Figure 4 yes Figure 1 Rear view of a side-discharge air conditioner (part of the indoor heat exchanger is omitted).

[0021] Figure 5 yes Figure 1 A three-dimensional structural diagram of the first support in the middle;

[0022] Figure 6 yes Figure 1 A three-dimensional structural diagram of the second support in the image from a single perspective;

[0023] Figure 7 yes Figure 1 A three-dimensional structural diagram of the second support in the image from another perspective;

[0024] Figure 8 yes Figure 1 A schematic diagram showing the state of the second bracket after it is assembled with the top of the outdoor heat exchanger.

[0025] Figure 9 This is a partial structural schematic diagram of a side-discharge air conditioner according to another embodiment of the present invention. The first motor shown in the figure is assembled on a centrifugal volute.

[0026] Figure 10 This is a partial structural schematic diagram of a side-discharge air conditioner in another embodiment of the present invention.

[0027] Figure 11 yes Figure 10 A schematic diagram of the side-discharge window type air conditioner without the waterproof cover;

[0028] Figure 12 yes Figure 10 A schematic diagram of a portion of the air conditioner casing in a side-discharge window type air conditioner;

[0029] Figure 13 yes Figure 10 A three-dimensional structural diagram of the waterproof cover of a side-discharge air conditioner.

[0030] Figure 14 yes Figure 10 A three-dimensional structural diagram of a side-discharge air conditioner from another perspective (excluding components such as the outdoor side air outlet panel).

[0031] Figure 15This is a performance comparison of traditional side-discharge window air conditioners at different outdoor fan speeds (i.e., the fan corresponding to the second fan of this utility model);

[0032] Figure 16 This is a performance comparison of traditional side-discharge window air conditioners at different internal fan speeds (i.e., the fan corresponding to the first fan of this utility model);

[0033] Figure 17 This is a schematic diagram of a specific control logic for the control method of the side-discharge window type air conditioner of this utility model;

[0034] Figure 18 This is a schematic diagram of the internal structure of a side-discharge air conditioner in related technologies.

[0035] The attached figures are labeled as follows:

[0036] 10. Side air outlet; 11. First fan; 111. Centrifugal volute; 112. Centrifugal fan blade; 12. First motor; 13. Indoor heat exchanger; 21. Second fan; 22. Second motor; 23. Outdoor heat exchanger; 3. First waterproof cover; 4. Chassis; 41. First bracket; 411. Waterproof plate; 42. Second bracket; 421. Second mounting hole; 422. Fin fastening clamp; 4221. First fin; 4222. Second fin; 423. Screw boss; 424. Ventilation hole; 51. Photovoltaic main control board; 511. Radiator; 52. Second waterproof cover; 521. Second wiring hole; 53. PFC inductor; 6. Air conditioner casing; 61. First wiring hole; 611. Wiring ring; 62. Through hole; 71. Compressor; 72. Air conditioner electrical box. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0038] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0039] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90° or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0040] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0041] See Figure 1 and Figure 17As shown, according to an embodiment of the present invention, a side-discharge window-type air conditioner is provided, including an air conditioner housing 6. The air conditioner housing 6 has an indoor side space (not labeled in the figure) and an outdoor side space (not labeled in the figure). The indoor side space is provided with a first fan 11 for driving indoor airflow through an indoor heat exchanger 13, and the outdoor side space is provided with a second fan 21 (axial flow fan) for driving indoor airflow through an outdoor heat exchanger 23. The first fan 11 includes a centrifugal volute 111 and centrifugal fan blades 112 located within the centrifugal volute 111. The side-discharge window... The window air conditioner also includes a first motor 12 and a second motor 22. The first motor 12 is used to independently drive the centrifugal fan blade 112 to rotate, and the second motor 22 is used to independently drive the second fan 21 to rotate. Taking the usage orientation of the side-discharge window air conditioner as a reference, the axial projection along the rotation axis of the first fan 11 coincides with the midpoint of the left and right width of the indoor heat exchanger 13. The air conditioner casing 6 forms a side air outlet 10 on the left or right side of the indoor heat exchanger 13, that is, the window air conditioner is a left-side air outlet or a right-side air outlet.

[0042] In this technical solution, the coaxial drive of the indoor and outdoor fans in the existing side-discharge window-type air conditioner is improved to the independent drive of the indoor and outdoor fans in this invention. This eliminates the constraint on the arrangement of the first fan 11 in the indoor space, which is located by the second fan 21 in the outdoor space. This ensures that the rotation axis driving the first fan 11 is aligned horizontally with the indoor heat exchanger 13 (understandably, the second fan 21 is also aligned horizontally with the outdoor heat exchanger 23), thus guaranteeing a high heat exchange efficiency for the indoor heat exchanger. This is beneficial for the development of high-efficiency models. Furthermore, because the first fan 11 in this invention... The first fan 11 and the second fan 21 are independently driven to rotate by the first motor 12 and the second motor 22, respectively. The two can be matched with the optimal rotation speed according to the heat exchange efficiency of the indoor heat exchanger 13 and the outdoor heat exchanger 23 arranged accordingly, so that the overall performance of the unit is in a better state. It is also understood that by matching the first fan 11 and the second fan 21 with various different speeds, a system configuration with better energy efficiency and lower noise can be achieved. This is conducive to realizing the layout of AI functions of the air conditioner, improving product competitiveness, eliminating the problem of excessive noise in side-discharge window air conditioners caused by mismatch between indoor and outdoor speeds, and improving user comfort.

[0043] When the air conditioner is running in air supply mode, only the first fan 11 on the indoor side can be controlled to operate, while the second fan 21 on the outdoor side does not need to operate. Of course, the compressor also does not need to be started.

[0044] In some embodiments, the centrifugal volute 111 has a volute wall near the second fan 21, the volute wall dividing the interior space of the air conditioner housing 6 into the indoor space and the outdoor space.

[0045] In this technical solution, the window air conditioner no longer needs to be equipped with a partition to separate the indoor and outdoor spaces. That is, the volute wall of the centrifugal volute 111 in this utility model not only forms a centrifugal air duct, but also serves as a partition between the indoor and outdoor spaces of the window air conditioner, which is conducive to improving the compact design of the air conditioner.

[0046] In one specific embodiment, see [link to specific implementation details]. Figure 9 As shown, the first motor 12 is assembled on the side of the volute wall located in the outdoor space.

[0047] In this technical solution, the first motor 12 is directly assembled onto the centrifugal volute 111, which can further simplify the structural design of the air conditioner.

[0048] In some embodiments, a first mounting hole (not shown in the figure) for assembling the first motor 12 is formed on the wall of the volute. A first waterproof cover 3 is provided around the opening of the first mounting hole in the outdoor space. The first motor 12 is equipped with a motor drive motherboard (not shown in the figure, not shown in the figure).

[0049] In this technical solution, by covering the outer periphery of the first mounting hole with a first waterproof cover 3, effective protection can be provided for the motor drive mainboard configured on the first motor 12. It should be noted that using a first motor 12 with a motor drive mainboard allows the window air conditioner of this invention to undergo fewer modifications compared to existing air conditioners, reducing product manufacturing costs.

[0050] The air conditioner housing 6 includes a chassis 4 at its bottom; see another specific embodiment for details. Figure 1 As shown, a first bracket 41 is provided on the chassis 4 corresponding to the outdoor space, such as... Figure 5 As shown, the first bracket 41 has a mounting groove (not shown or labeled in the figure) for assembling the first motor 12. A downwardly bent waterproof plate 411 is formed at the top of the first bracket 41 (with reference to the specific installation orientation of the first bracket 41). The waterproof plate 411 is located on the side of the first bracket 41 closest to the second fan 21. The first motor 12 is equipped with a motor drive mainboard, which is located on the side of the waterproof plate 411 furthest from the second fan 21. In a preferred embodiment, the waterproof plate 411 and the first bracket 41 are integrally formed.

[0051] In this technical solution, the first motor 12 is assembled on the first bracket 41 located on the chassis 4, and the waterproof plate 411 on the first bracket 41 can effectively protect the motor drive motherboard configured on the first motor 12.

[0052] In some embodiments, a second bracket 42 and an outdoor heat exchanger 23 are provided on the chassis 4 corresponding to the outdoor space. It is understood that the indoor heat exchanger 13 and the aforementioned first fan 11 are also assembled on the aforementioned chassis 4. The second bracket 42 has a second mounting hole 421 for assembling the second motor 22. A fin fastening clip 422 is formed at the top of the second bracket 42. The outdoor heat exchanger 23 is bent (specifically, U-shaped or L-shaped) and includes at least two rows of heat exchange fins arranged inside and outside. The fin fastening clip 422 can clamp the top of the outdoor heat exchanger 23 on the windward and leeward sides to ensure that the gap between each row of heat exchange fins in the outdoor heat exchanger 23 is kept at the target value.

[0053] In this technical solution, while the second bracket 42 provides reliable support for the second motor 22, a fin fastening clamp 422 is also set at the top of the second bracket 42 to limit the inner and outer sides (i.e., the windward side and the leeward side) of the outdoor heat exchanger 23. This ensures that the gap between the inner and outer rows of heat exchange fins of the outdoor heat exchanger 23 is at the target value after bending, thereby preventing the phenomenon of excessive wind resistance and low heat exchange efficiency caused by the bending and forming of multiple rows (two or more rows) of heat exchange fins being squeezed and deformed in the prior art.

[0054] Specifically, in multi-row (including two-row) bent heat exchangers, the heat exchange fins of both the inner and outer rows will arch and deform during bending. This deformation increases the frontal area, leading to increased wind resistance, as shown in the following formula:

[0055]

[0056] Where Fd is wind resistance, N; Cd is the drag coefficient, which depends on the shape and surface roughness of the object; ρ is the air density, kg / m³, which is approximately 1.225 kg / m³ under standard atmospheric pressure; A is the windward area, i.e., the projected area of ​​the object facing the direction of the wind, m²; v is the velocity of the object relative to the air, m / s.

[0057] Based on the above wind resistance formula, it can be seen that when the windward area A increases, the wind resistance Fd will increase. Furthermore, according to the wind resistance power formula... It can be seen that when the wind resistance Fd increases, the overall power P will increase, and the increased power will lead to a decrease in the overall energy efficiency, which is not conducive to the promotion and deployment of AI energy-saving mode.

[0058] See further Figure 7 As shown, in some embodiments, the fin fastening clamp 422 includes a first plate 4221 that mates with the windward side and a second plate 4222 that mates with the leeward side. The first plate 4221 and the second plate 4222 are arranged parallel to each other and spaced apart. The free ends of the first plate 4221 and the second plate 4222 form a flared structure to facilitate the smooth alignment and clamping of the top end of the outdoor heat exchanger 23 by the fin fastening clamp 422.

[0059] In a preferred embodiment, a screw boss 423 is formed on the top end face of the second bracket 42, which is detachably connected to the air conditioner housing 6, so as to avoid large vibration amplitude of the second motor 22 at high speed, which would affect the reliability of the whole machine or cause abnormalities such as vibration.

[0060] In some embodiments, the second bracket 42 is further provided with a ventilation hole 424 located in the upper region of the second mounting hole 421. The height of the free ends of the first piece 4221 and the second piece 4222 is higher than the top inner wall of the ventilation hole 424, so that the first piece 4221 and the second piece 4222 are outside the flow area of ​​the ventilation hole 424, thereby preventing the first piece 4221 and the second piece 4222 from unduly reducing the flow area.

[0061] See details Figures 10 to 14 As shown, in some embodiments, a photovoltaic control component (not shown in the figure) for use with a photovoltaic power generation array (not shown in the figure, not indexed) is also assembled on the outer wall of the air conditioner casing 6, so as to be able to use the electricity generated by the photovoltaic to power the entire air conditioner. The photovoltaic control component includes a photovoltaic main control board 51, and the heat sink 511 of the photovoltaic main control board 51 is located in the outdoor space, such as Figure 13 As shown. The photovoltaic control components also include a PFC inductor 53, which can convert the collected DC power into AC power. The converted AC power is then transmitted through connecting lines to the aforementioned photovoltaic main control board 51, compressor 71, first motor 12, second motor 22, etc., to meet the cooling or heating operation of the whole system.

[0062] In this technical solution, the heat sink 511 of the photovoltaic main control board 51 is located in the outdoor space, and the second fan 21 can be used to achieve efficient cooling of the photovoltaic main control board 51 without the need to set up a separate cooling airflow drive structure, making the structure of the air conditioner more compact.

[0063] In some embodiments, the photovoltaic control component is assembled on the top side wall of the air conditioner housing 6, and a second waterproof cover 52 is also assembled on the top side wall. The second waterproof cover 52 covers the outside of the photovoltaic control component. A through hole 62 is formed on the top side wall, and the radiator 511 extends into the outdoor space through the through hole 62.

[0064] In this technical solution, a through hole 62 is provided on the top side wall of the air conditioner casing 6 to form a passage area for the radiator 511. At the same time, a second waterproof cover 52 is provided outside the photovoltaic control component to effectively protect the photovoltaic control component, which can prevent external water, dust and other substances from entering the air conditioner through the through hole 62. It is understood that the aforementioned second waterproof cover 52 will cause poor cooling of the photovoltaic main control board 51. However, since the radiator 511 in this utility model is located in the outdoor space, the aforementioned drawbacks can be effectively overcome.

[0065] See also Figure 1 As shown, the air conditioner also includes a compressor 71, which is arranged in the outdoor space corresponding to the windward side (i.e., the air inlet side) of the outdoor heat exchanger 23, while the second fan 21 is arranged on the leeward side (i.e., the air outlet side) of the outdoor heat exchanger 23. When the second fan 21 rotates, it drives the airflow in the outdoor space into the outdoor space, and part of the airflow exchanges heat with the compressor 71 to cool it, so that the second fan 21 can cool the outdoor heat exchanger 23 and the compressor 71 at the same time, and the structure is further simplified.

[0066] See also Figure 12 and Figure 13 As shown, multiple first cable routing holes 61 for passing cables are provided on the top side wall of the air conditioner casing 6, and second cable routing holes 521 for passing cables are constructed on the second waterproof cover 52. To prevent wear on the cables by the hole walls, corresponding cable routing rubber rings 611 are provided on the hole walls of both the first cable routing holes 61 and the second cable routing holes 521. Specifically, three first cable routing holes 61 are provided, for high-voltage wires, low-voltage wires, and photovoltaic main board connection wires, respectively. The main purpose of separating the high-voltage and low-voltage wires is to solve the anti-interference problem and meet the EMC requirements of the importing country. The function of the photovoltaic main board connection wire is that when the power of the photovoltaic power generation array cannot meet the needs of the whole machine (such as at night or in cloudy weather), the power required for the operation of the whole machine is provided by the mains power grid to ensure that the whole machine meets the needs of cooling or heating.

[0067] When a traditional side-discharge window-type air conditioner starts in cooling mode (COOL), the compressor starts, and the motor starts, simultaneously driving the axial fan and centrifugal fan. Taking the measured data of a side-discharge window-type air conditioner exported to a certain country as an example, the condenser (i.e., the aforementioned outdoor heat exchanger 23) has the best heat exchange efficiency when the outdoor axial fan speed is 900 r / min. Figure 15 The evaporator (i.e., the aforementioned indoor heat exchanger 13) achieves its optimal heat exchange efficiency when the indoor centrifugal fan speed is 750 r / min. Figure 16 Traditional window air conditioners, with their single motors, cannot meet the demands of two different speeds, thus failing to achieve optimal system performance. However, when the window air conditioner system of this invention is activated in COOL mode, the outdoor motor (i.e., the aforementioned second motor 22) can be set to 900 r / min and the indoor motor (i.e., the aforementioned first motor 12) can be set to 750 r / min, at which point the system's energy efficiency reaches its optimal state.

[0068]

[0069] BTU / h is in British thermal units per hour (BTU / h), representing the cooling capacity that the air conditioner can provide; Cd is in watts (W), representing the electricity required for the air conditioner to operate.

[0070] Based on the above energy efficiency ratio under constant operating conditions, the efficiency formula EER = cooling capacity (BTU / h) / input power (W), the power formula P = F⋅v, and the derivation of Newton's second law F = m⋅a, we can obtain EER = cooling capacity (BTU / h) / (m⋅a)⋅v. When the speed v decreases, the energy efficiency ratio EER will increase, thus improving the overall energy efficiency of the machine.

[0071] This utility model also provides a control method for the aforementioned side-discharge window type air conditioner, see details below. Figure 17 For example, the steps include the following:

[0072] Obtain the air conditioner's operating mode command, and control the operation of the first fan 11, the second fan 21, and the compressor 71 according to the obtained operating mode command.

[0073] Specifically, when the operating mode command is the air supply mode (FAN), the first fan 11 (i.e., Figure 17 The centrifugal fan blades in the middle are running, while the second fan 21 (that is, the centrifugal fan blades in the middle) is .... Figure 17 The axial fan blades and compressor 71 are not operating;

[0074] When the operating mode command is cooling mode (COOL), the first fan 11 is controlled to run first. After the speed of the first fan 11 is not lower than the first preset value (e.g., 700 r / min), the second fan 21 is controlled to run. At the same time, when the speed of the second fan 21 is not lower than the second preset value (e.g., 700 r / min) and is higher than the speed of the first fan 11, the compressor 71 is controlled to start running to ensure that the cooling energy efficiency is at a high level. It should be noted that when the cooling mode is selected, the first fan 11 on the indoor side is controlled to run first. On the one hand, this can improve the operating response of the air conditioner and prevent users from having the illusion that the air conditioner is malfunctioning. On the other hand, its rotation can be used to drive the airflow in the room to achieve natural convection cooling and extend the service life of the air conditioner.

[0075] When the operating mode command is heating mode (HEAT), the second fan 21 is controlled to run first. When its speed is not lower than the third preset value (e.g., 800 r / min), the compressor 71 is controlled to run. When the speed of the first fan 11 is lower than the fourth preset value (e.g., 500 r / min), the compressor 71 is controlled to stop running to prevent the compressor 71 from being damaged.

[0076] It should be noted that in the control method of this utility model, the fan corresponding to the heat exchanger that acts as the evaporator in the corresponding operating mode is controlled to operate before the compressor 71 starts running, which can prevent the occurrence of frost due to low temperature when the compressor 71 is running.

[0077] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0078] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A side-discharge window type air conditioner, characterized in that, The air conditioner includes an air conditioner housing (6), which has an indoor space and an outdoor space. The indoor space is provided with a first fan (11) for driving indoor airflow through an indoor heat exchanger (13), and the outdoor space is provided with a second fan (21). The first fan (11) includes a centrifugal volute (111) and a centrifugal fan blade (112) inside the centrifugal volute (111). It also includes a first motor (12) and a second motor (22). The first motor (12) is used to independently drive the centrifugal fan blade (112) to rotate, and the second motor (22) is used to independently drive the second fan (21) to rotate. With the usage orientation of the side-outlet air conditioner as a reference, the axial projection along the rotation axis of the first fan (11) coincides with the midpoint of the left and right width of the indoor heat exchanger (13). The air conditioner housing (6) has a side air outlet (10) formed on the left or right side of the indoor heat exchanger (13).

2. The side-discharge window type air conditioner according to claim 1, characterized in that, The centrifugal volute (111) has a volute wall near the second fan (21), which divides the internal space of the air conditioner housing (6) into the indoor space and the outdoor space.

3. The side-discharge window type air conditioner according to claim 2, characterized in that, The first motor (12) is assembled on the side of the volute wall located in the outdoor space.

4. The side-discharge window type air conditioner according to claim 3, characterized in that, A first mounting hole for assembling the first motor (12) is formed on the wall of the volute. A first waterproof cover (3) is provided around the opening of the first mounting hole in the outdoor space. The first motor (12) is equipped with a motor drive motherboard.

5. The side-discharge window type air conditioner according to claim 2, characterized in that, The air conditioner housing (6) includes a chassis (4) at its bottom. A first bracket (41) is provided on the chassis (4) corresponding to the outdoor space. An mounting groove for assembling the first motor (12) is formed on the first bracket (41). A downwardly bent waterproof plate (411) is formed at the top of the first bracket (41). The waterproof plate (411) is located on the side of the first bracket (41) close to the second fan (21). The first motor (12) is equipped with a motor drive main board. The motor drive main board is located on the side of the waterproof plate (411) away from the second fan (21).

6. The sidewall-venting air conditioner of claim 1, wherein The air conditioner housing (6) includes a chassis (4) at its bottom. A second bracket (42) and an outdoor heat exchanger (23) are provided on the chassis (4) corresponding to the outdoor space. A second mounting hole (421) for assembling the second motor (22) is formed on the second bracket (42). A fin fastening clip (422) is formed at the top of the second bracket (42). The outdoor heat exchanger (23) is bent and includes at least two rows of heat exchange fins arranged inside and outside. The fin fastening clip (422) can clamp the top of the outdoor heat exchanger (23) on the windward side and the leeward side to ensure that the gap between each row of heat exchange fins in the outdoor heat exchanger (23) is kept at the target value.

7. The side-discharge window type air conditioner according to claim 6, characterized in that, The fin fastening clip (422) includes a first piece (4221) that cooperates with the windward side and a second piece (4222) that cooperates with the leeward side. The first piece (4221) and the second piece (4222) are arranged parallel and spaced apart, and the free ends of the first piece (4221) and the second piece (4222) form a flared structure; and / or, a screw boss (423) that can be detachably connected to the air conditioner housing (6) is formed on the top end face of the second bracket (42).

8. The side-discharge window type air conditioner according to claim 7, characterized in that, The second bracket (42) also has a ventilation hole (424) in the upper region of the second mounting hole (421), and the height of the free ends of the first piece (4221) and the second piece (4222) is higher than the top inner wall of the ventilation hole (424).

9. The side-discharge window type air conditioner according to claim 1, characterized in that, The outer wall of the air conditioner housing (6) is also equipped with a photovoltaic control component for use with the photovoltaic power generation array. The photovoltaic control component includes a photovoltaic main control board (51), and the radiator (511) of the photovoltaic main control board (51) is located in the outdoor space.

10. The side-discharge window type air conditioner according to claim 9, characterized in that, The photovoltaic control component is assembled on the top side wall of the air conditioner housing (6), and a second waterproof cover (52) is also assembled on the top side wall. The second waterproof cover (52) covers the outside of the photovoltaic control component. A through hole (62) is formed on the top side wall, and the radiator (511) extends into the outdoor space through the through hole (62).

Images