air conditioner

Abstract

This utility model discloses an air conditioner, belonging to the field of air conditioners. The air conditioner includes a main body, which comprises a casing, an indoor heat exchanger, a heat exchange fan, a fresh air volute, and a first air damper. The first air damper is located at the first air outlet of the casing and is used to control the opening and closing of the fresh air outlet. The air conditioner also includes a drive motor, a first gear, a first rack, and a limiting member, with the first air damper connected to the limiting member. The fresh air volute has a mounting groove, and the limiting member slides within the mounting groove. One of the limiting members and the inner wall of the mounting groove has an elastic arm that presses against the other. This air conditioner utilizes the elastic force generated when the elastic arm is pressed to apply a preload to the limiting member. This preload is transmitted to the first rack, preventing it from shifting during reversal. This solves the problem of shaking and jamming when the first air damper opens and closes.

Description

Technical Field

[0001] This application belongs to the field of air conditioner technology. Background Technology

[0002] If users feel that the indoor air is stale and stuffy after running the air conditioner for a long time, the usual solution is to open the windows for ventilation, which is rather troublesome to do manually.

[0003] Related technologies have led to the development of air conditioners that integrate both heat exchange and fresh air modules. The fresh air module draws in fresh air from the outside and vents it into the room to ventilate, thus improving the air conditioner's functionality. Some fresh air modules also include an air outlet damper, using a rack and pinion mechanism for transmission. However, this rack and pinion movement can cause vibration and jamming, a phenomenon easily noticeable to users and affecting the user experience. Utility Model Content

[0004] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes an air conditioner that can reduce the shaking and jamming phenomenon of the fresh air outlet damper.

[0005] An air conditioner according to an embodiment of the present disclosure includes a main body.

[0006] The main body includes: a housing, the interior of which forms a cavity, and a heat exchange inlet and a heat exchange outlet formed on the housing; a base disposed within the cavity, on which a volute air duct is formed; a heat exchange fan disposed within the volute air duct, for drawing indoor air into the volute air duct through the heat exchange inlet and blowing air from the volute air duct into the room through the heat exchange outlet when rotating; and a first motor disposed within the cavity and located at one end of the heat exchange fan along its length, for driving the heat exchange fan to rotate.

[0007] The air conditioner also includes: a fresh air volute, wherein a fresh air duct is formed inside the fresh air volute, and a fresh air inlet and a fresh air outlet are formed on the fresh air volute; a fresh air fan, wherein the fresh air fan is installed inside the fresh air volute; a drive motor, wherein the drive motor is installed in the fresh air volute; a first gear, wherein the first gear is connected to the drive motor; and a first rack, wherein the first rack meshes with the first gear.

[0008] The air volute is provided with an installation groove, and the air conditioner also includes a limiting member that slides in the installation groove. The limiting member is connected to the first rack, and one end of the installation groove is a slot.

[0009] The housing is provided with a first air outlet corresponding to the slot and the fresh air outlet. The air conditioner also includes a first air damper movably installed at the first air outlet, and the first air damper is connected to the limiting member.

[0010] One of the limiting members and the inner wall of the mounting groove is provided with an elastic arm, which presses against the other.

[0011] The air conditioner of this application is equipped with a first gear and a first rack, which convert the rotational power of the drive motor into linear motion, allowing the first damper to open and close linearly. This arrangement facilitates the formation of an annular air outlet between the first damper and the unit casing when the first damper is open. The obstruction by the first damper makes the exhaust air gentler, preventing discomfort caused by direct fresh airflow. It also increases the fresh air delivery range, allowing for faster and more even distribution of fresh air indoors.

[0012] The first damper is set to a linear motion mode. The movement path required for the first damper to open and close can be set to be relatively short. In this way, the opening of the first damper will not affect the exhaust, but will take up less space and will not be too abrupt.

[0013] By utilizing the cooperation between the limiting component and the mounting groove, the stability of the first damper is improved, and the shaking of the first damper during exhaust is reduced.

[0014] One of the limiting components and the inner wall of the mounting groove is equipped with an elastic arm, which presses against the other. The elastic force generated when the elastic arm is pressed applies a preload to the limiting component. This preload is transmitted to the first rack, preventing it from shifting during reversal. This solves the vibration and jamming problems that occur when the first damper opens and closes.

[0015] The flexible arm has a simple structure and is easy to assemble, which can appropriately reduce costs.

[0016] In some embodiments, the resilient arm is formed on the limiting member, and the resilient arm includes:

[0017] A first arm, one end of which is connected to the limiting member;

[0018] A first pressure block is connected to the other end of the first arm. The first pressure block presses against the inner wall of the mounting groove to cause the first arm to bend and deform.

[0019] Optionally, there are two elastic arms, which are located on opposite sides of the limiting member.

[0020] Specifically, the elastic arm is integrally formed on the limiting member.

[0021] Optionally, the side of the limiting member is formed with a first clearance notch, the first arm is arranged along the extension direction of the mounting groove, and the first arm is connected to the side of the first clearance notch.

[0022] In some embodiments, the resilient arm is formed on the inner wall of the mounting groove, and the resilient arm includes:

[0023] The second arm, one end of which is connected to the side of the mounting groove;

[0024] The second pressure block is connected to the other end of the second arm. The second pressure block presses against the limiting member to cause the second arm to bend and deform.

[0025] Specifically, the inner wall of the mounting groove is provided with a second clearance notch, and one end of the second arm is connected to one side of the second clearance notch;

[0026] The second pressure block is spaced apart from the other side of the second clearance notch.

[0027] Optionally, the second arm is provided with a thinning groove, which is located at the connection point of the second arm to the second pressure block and is arranged along the length direction of the second pressure block;

[0028] The second arm has at least one weight-reducing hole, which is arranged along the thickness direction of the second arm.

[0029] In some embodiments, at least one support rib is provided on the inner wall of the mounting groove, and the support rib extends along the length direction of the mounting groove;

[0030] The supporting rib abuts against the limiting member.

[0031] In some embodiments, the air conditioner further includes: a second gear connected to the drive motor; a second rack meshing with the second gear; wherein the air conditioner further includes a second damper movably mounted on the fresh air inlet, the second damper being connected to the second rack.

[0032] 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

[0033] 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:

[0034] Figure 1 This is an overall view of the air conditioner provided in the embodiments of this application;

[0035] Figure 2 This is an internal structural diagram of the air conditioner provided in the embodiments of this application;

[0036] Figure 3 This is a partial view of the internal structure of the air conditioner provided in the embodiment of this application;

[0037] Figure 4 This is an assembly diagram of the first volute and the fresh air fan provided in an embodiment of this application;

[0038] Figure 5 This is a perspective view of the second volute provided in an embodiment of this application;

[0039] Figure 6 This is a structural diagram of the second volute and the damper drive chain inside, provided in an embodiment of this application;

[0040] Figure 7 This is a structural diagram of the volute half and the damper drive chain on it provided in the embodiments of this application;

[0041] Figure 8 This is a structural diagram of the damper drive chain provided in an embodiment of this application;

[0042] Figure 9 This is an assembly schematic diagram of the second volute and the limiting member provided in an embodiment of this application;

[0043] Figure 10 This is a side view of the limiting member provided in the embodiments of this application;

[0044] Figure 11 This is an assembly diagram of the second volute and limiting member provided in another embodiment of this application.

[0045] Figure label:

[0046] Air conditioner 10000, main unit 1000;

[0047] Casing 1, accommodating cavity S1, heat exchange air inlet 11, heat exchange air outlet 12, first air outlet 13, second air outlet 14;

[0048] Fresh air volute 2, fresh air inlet 21, fresh air outlet 22, first volute 23, second volute 24, volute half 241, axial ventilation port 2413, fan cover 242, volute cavity V1, fresh air cavity V2, mounting groove 25, groove opening 251, second clearance notch 252, support rib 253, cavity V4;

[0049] Drive motor 3, second rack 412, first rack 421, limiting member 422, first clearance notch 4221, second gear 431, first gear 432, elastic arm 44, first arm 441, first pressure block 442, second arm 443, thinning groove 4431, weight reduction hole 4432, second pressure block 444;

[0050] Heat exchange fan 51, first motor 52, indoor heat exchanger 53, first damper 61, second damper 62, base 7, volute air duct S2, fresh air fan 8. Detailed Implementation

[0051] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0052] This application describes the structure of an air conditioner 10000.

[0053] Before proceeding, let's introduce the structure of common air conditioners. Common air conditioners include split-type air conditioners, which consist of an indoor unit and an outdoor unit. The indoor and outdoor units are connected by pipes to transfer refrigerant. The indoor unit includes an indoor heat exchanger 53 and a heat exchange fan.

[0054] The outdoor unit includes a compressor, an outdoor heat exchanger, an outdoor fan, and a throttling device. The compressor, outdoor heat exchanger, throttling device, and indoor heat exchanger 53 connected in sequence form a refrigerant circuit. The refrigerant circulates in the refrigerant circuit and exchanges heat with the air through the outdoor heat exchanger and indoor heat exchanger 53 respectively, so as to realize the cooling mode or heating mode of the air conditioner.

[0055] The compressor is configured to compress the refrigerant so that the low-pressure refrigerant is compressed to form a high-pressure refrigerant.

[0056] 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 air conditioner, 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 air conditioner, the outdoor heat exchanger operates as an evaporator, causing the depressurized refrigerant to absorb heat from the outdoor air and evaporate.

[0057] The outdoor fan is configured to draw in outside air into the outdoor unit and expel the outdoor air, which has been heated by the outdoor heat exchanger, to the outside. The outdoor fan provides power for the flow of outdoor air.

[0058] A throttling device is connected between the outdoor heat exchanger and the indoor heat exchanger 53. The throttling device regulates the refrigerant pressure flowing through the outdoor and indoor heat exchangers 53, thereby regulating the refrigerant flow rate between them. The flow rate and pressure of the refrigerant flowing between the outdoor and indoor heat exchangers 53 affect their heat exchange performance. The throttling device can be a throttling tube, an electronic valve, etc. When the throttling device is an electronic valve, its opening is adjustable to regulate the refrigerant flow rate and pressure.

[0059] Some designs also include a four-way valve in the air conditioner. 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 air conditioner can switch between cooling mode and heating mode.

[0060] The indoor heat exchanger 53 is configured to exchange heat between indoor air and the refrigerant transported in the indoor heat exchanger 53.

[0061] The heat exchange fan is configured to draw indoor air into the indoor unit and deliver the indoor air, after heat exchange with the indoor heat exchanger 53, to the room. The heat exchange fan provides power for the flow of indoor air.

[0062] Air conditioners also include a control unit, which is mainly used to control the compressor's operating frequency and the opening degree of the throttling device. Some control units can also control the speed of the outdoor fan and the heat exchange fan. The control unit is connected to the compressor, throttling device, outdoor fan, and heat exchange fan via data cables to transmit communication information.

[0063] The control device includes a processor, which may include a central processing unit (CPU), a microprocessor, or an application-specific integrated circuit (ASIC), and may be configured to perform the corresponding operations described in the control device when the processor executes a program stored in a non-transitory computer-readable medium coupled to the control device.

[0064] Non-transitory computer-readable storage media may include magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), smart cards, or flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or keyboard drive).

[0065] The air conditioner 10000 proposed in this application can be an indoor unit. For example, it can be a wall-mounted unit, which is usually installed on a wall.

[0066] The following is for reference. Figures 1-11 This application describes an air conditioner 10000 according to an embodiment of the present application.

[0067] According to the embodiment of this application, the air conditioner 10000, such as Figure 1 As shown, it includes: main body 1000.

[0068] like Figure 1 and Figure 2 As shown, the main body 1000 includes a housing 1. An accommodating cavity S1 is formed inside the housing 1, and a heat exchange air inlet 11 and a heat exchange air outlet 12 are formed on the housing 1. The housing 1 serves a protective function and constitutes the overall external structure of the air conditioner 10000.

[0069] Typically, the casing 1 is a long, rectangular shell, for example, the length of casing 1 is set horizontally, that is, casing 1 is installed on the wall horizontally. In actual products, in order to drain condensate, in some embodiments, casing 1 is installed on the wall horizontally, and at a small angle to the horizontal plane.

[0070] Reference Figure 3 The main body 1000 also includes an indoor heat exchanger 53, which is disposed within the accommodating cavity S1. As described above, the indoor heat exchanger 53 is a loop in the refrigerant circuit, through which refrigerant flows to cool or heat the air flowing from the surface of the indoor heat exchanger 53.

[0071] In the air conditioner 10000, the indoor heat exchanger 53 is typically arranged to extend along the length of the casing 1. For example, the indoor heat exchanger 53 is a two-fold or three-fold heat exchanger, and each fold of the indoor heat exchanger 53 is a plate-like structure extending along the length.

[0072] The main body 1000 also includes a base 7, which is disposed within the accommodating cavity S1. The base 7 is an internal mounting support structure of the main body 1000, and the indoor heat exchanger 53 can be mounted on the base 7. In this embodiment, a volute air duct S2 is formed on the base 7. After the indoor air enters the casing 1, it is guided by the volute air duct S2 to ensure that the resistance encountered by the indoor air when flowing through the indoor heat exchanger 53 is small.

[0073] The main body 1000 also includes a heat exchange fan 51, which is installed in the volute air duct S2.

[0074] In this application, the heat exchange fan 51 can be a cross-flow fan, which has low noise and large air volume. Furthermore, the air velocity of the cross-flow fan is more evenly distributed along its axial direction, which helps to increase the air delivery distance and range. Moreover, using a cross-flow fan, and arranging it along the length of the main body 1000, facilitates the flow of the driven airflow through the entire indoor heat exchanger 53, ensuring a balanced heat exchange efficiency across all components of the indoor heat exchanger 53.

[0075] It should be noted that when describing the internal structure of the air conditioner 10000 components, the terms "axial", "radial", and "circumferential" are all based on the axial, radial, and circumferential directions of the motor. For example, the direction parallel to the extension direction of the output shaft of the first motor 52 is the axial direction, the direction perpendicular to the extension direction of the output shaft is the radial direction, and the direction around the output shaft is the circumferential direction.

[0076] Reference Figure 3 The main body 1000 also includes a first motor 52, which is disposed within the accommodating cavity S1. The first motor 52 is used to drive the heat exchange fan 51 to rotate, so that the air inside the air conditioner exchanges heat with the indoor space.

[0077] like Figure 1 As shown, the casing 1 is provided with a heat exchange outlet 12 and a heat exchange inlet 11. When the heat exchange fan 51 is running, it draws indoor air into the casing 1 through the heat exchange inlet 11. After heat exchange with the indoor heat exchanger 53, the heat-exchanged air is sent to the room through the volute air duct S2 from the heat exchange outlet 12, thereby achieving the regulation of the indoor ambient temperature.

[0078] The indoor heat exchanger 53 can be used as an evaporator to provide cooling airflow to the indoor space through the heat exchange outlet 12, or the indoor heat exchanger 53 can be used as a condenser to provide heating airflow to the indoor space through the heat exchange outlet 12.

[0079] In this application, the heat exchange air inlet 11 is located above the heat exchange air outlet 12 in the height direction of the main body 1000, which facilitates air intake from above and air exhaust from below. In this application, the height direction of the main body 1000 is the vertical direction.

[0080] In this application, the heat exchange fan 51 is located on the side of the indoor heat exchanger 53 away from the heat exchange air inlet 11. It can be understood that the heat exchange fan 51 is a power drive component that drives the indoor air to exchange heat with the indoor heat exchanger 53 by rotation, and it is also a power drive component for air supply.

[0081] By placing the heat exchange fan 51 on the side of the indoor heat exchanger 53 away from the heat exchange inlet 11, the aerodynamic force generated when the heat exchange fan 51 rotates can be evenly distributed. Part of it is distributed to the air inlet side, so that the air drawn in can overcome the wind resistance generated by the indoor heat exchanger 53 when it flows into the volute air duct S2. The other part is distributed to the air outlet side, so that the air after heat exchange can be transported a longer distance when it is blown out from the heat exchange outlet 12.

[0082] In this application, refer to Figure 3The first motor 52 is located at one end along the length of the main body 1000. This facilitates the installation and maintenance of the first motor 52, and the main body 1000 as a whole does not need to become excessively tall or thick due to the placement of the first motor 52. Here, the height direction of the main body 1000 is consistent with the vertical direction, and the thickness direction of the main body 1000 is consistent with the front-to-back direction.

[0083] In this application, the air conditioner 1000 also includes a fresh air module. For example... Figures 4-6 As shown, the fresh air module includes a fresh air volute 2 and a fresh air fan 8. A fresh air duct is formed inside the fresh air volute 2, and a fresh air inlet 21 and a fresh air outlet 22 are formed on the fresh air volute 2. The fresh air fan 8 is installed inside the fresh air volute 2.

[0084] The fresh air fan 8 is installed inside the fresh air duct and drives airflow to be drawn in from the fresh air inlet 21 and exhausted into the room through the fresh air outlet 22. The operation of the fresh air fan 8 provides the power for the flow of fresh air. Thus, by setting up a fresh air duct and cooperating with the fresh air fan 8, when the indoor air is relatively polluted or the air quality is average, the fresh air fan 8 can drive relatively fresh outdoor air into the indoor environment to improve the indoor airflow environment.

[0085] Optionally, the fresh air fan 8 is a centrifugal fan with axial air intake and radial air outlet, and the fresh air fan 8 is located on the side of the heat exchange fan 51 away from the first motor 52.

[0086] Centrifugal fans are characterized by their compact structure, large air volume, and low noise. Furthermore, the fan noise decreases significantly as the speed decreases. Therefore, a smaller centrifugal fan can be selected for the fresh air fan 8 to meet the high air volume requirements. The low vibration and noise of centrifugal fans make them less likely to resonate with the indoor heat exchanger 53, effectively controlling the overall vibration and noise of the air conditioner 10000.

[0087] Specifically, the fresh air module can be equipped with an independent second motor, which is connected to the fresh air fan 8 to drive the fresh air fan 8 to rotate. Alternatively, the fresh air module can omit the independent second motor, and the fresh air fan 8 can be connected to the heat exchange fan 51 via a connecting shaft, with the first motor 52 synchronously driving both fans to rotate.

[0088] In this application, as Figures 6-8 , Figure 8 As shown, the air conditioner 10000 also includes: a drive motor 3, a first gear 432, and a first rack 421. The drive motor 3 is mounted on the fresh air volute 2, the first gear 432 is connected to the drive motor 3, and the first rack 421 meshes with the first gear 432.

[0089] The fresh air volute 2 is provided with an installation groove 25. The air conditioner 10000 also includes a limiting member 422 that slides in the installation groove 25. The limiting member 422 is connected to the first rack 421. One end of the installation groove 25 is a slot 251.

[0090] The housing 1 is provided with a first air outlet 13 with a corresponding slot 251 and a fresh air outlet 22. The air conditioner 10000 also includes a first air damper 61 that is movably installed on the first air outlet 13. The first air damper 61 is connected to a limiting member 422.

[0091] In this application, at least one fresh air outlet 22 is formed on the fresh air volute 2, and the at least one fresh air outlet 22 discharges air from the housing 1. For this purpose, a first air vent 13 is provided on the housing 1 so that the at least one fresh air outlet 22 can directly discharge fresh air into the room.

[0092] In some embodiments, the fresh air volute 2 has two fresh air outlets 22, both of which emit air from the casing 1. The casing 1 has a first air vent 13 and a second air vent 14. The first air vent 13 is positioned opposite one of the fresh air outlets 22, and the second air vent 14 is positioned opposite the other. The first air vent 13 and the second air vent 14 are located on different sides of the casing 1 to allow for a wider range of fresh air output, facilitating faster diffusion of fresh air throughout the indoor space. Optionally, the first air vent 13 is located on the front of the casing 1, resulting in less obstruction of the emitted fresh air, faster airflow, and quicker delivery to areas with people. Optionally, the first air vent 13 is located at the bottom of the casing 1, allowing the fresh air to exit downwards and quickly distribute along the floor to the entire indoor space.

[0093] Optionally, the heat exchange air inlet 11 is located at the top of the casing 1, i.e., in an area not visible to the user. Concealing the heat exchange air inlet 11 improves the aesthetics. Optionally, the second air outlet 14 is located at the top of the casing 1. This way, when the air conditioner 10000 is cooling, the fresh air absorbs the cooling energy from the indoor heat exchanger 53, lowering the temperature of the incoming fresh air and reducing the direct blowing of hot outdoor air into the room. When the air conditioner 10000 is heating, the fresh air absorbs the heat from the indoor heat exchanger 53, raising the temperature of the incoming fresh air and reducing the direct blowing of cold outdoor air into the room.

[0094] In this application, the first air vent 13 is visible because it is located on the front or bottom of the casing 1. A first air damper 61, which can be opened and closed, is provided at the first air vent 13 to cover it, maintaining the integrity of the visible area of ​​the casing 1 and improving aesthetics. Optionally, the second air vent 14, located at the top, does not have a damper, making it an invisible area and saving costs.

[0095] To control the opening and closing of the first damper 61, this application provides a power transmission chain: a drive motor 3, a first gear 432, a first rack 421, a limiter 422, and the first damper 61. The first damper 61 is opened when the fresh air module is running, and closed when the fresh air module stops running.

[0096] The first gear 432 and the first rack 421 are configured to convert the rotational power of the drive motor 3 into linear motion, allowing the first damper 61 to open and close linearly. This configuration facilitates the formation of an annular air outlet between the first damper 61 and the housing 1 when the first damper 61 is open. In other words, the exhaust air from the first air outlet 13 blows directly onto the first damper 61, where it is blocked and dispersed in all directions. The obstruction by the first damper 61 makes the exhaust air gentler, preventing discomfort caused by direct fresh airflow. It also increases the fresh air delivery range, facilitating faster and more even distribution of fresh air within the room.

[0097] Here, the fresh air volute 2 is provided with an installation groove 25, and the limiting member 422 is slidably engaged in the installation groove 25. The limiting member 422 moves linearly, thereby driving the first air damper 61 to move linearly. The movement path of the limiting member 422 can be a straight line or a curve. The shape of the centerline of the installation groove 25 is consistent with the movement path of the limiting member 422.

[0098] The first damper 61 is set to a linear motion mode. The movement path required for the first damper 61 to open and close can be set to be short. In this way, when the first damper 61 is opened, it will not affect the exhaust, but it will occupy less space and will not be too abrupt when it opens.

[0099] Since the first damper 61 bears a certain wind pressure when the fresh air module is running, in this application, an installation groove 25 is set on the fresh air volute 2, and the limiting member 422 is slidably engaged in the installation groove 25. The first damper 61 is installed on the limiting member 422. By utilizing the cooperation between the limiting member 422 and the installation groove 25, the stability of the first damper 61 is improved and the shaking of the first damper 61 during exhaust is reduced.

[0100] Understandably, during the opening and closing of the first damper 61, the drive motor 3 rotates in the opposite direction, causing the first gear 432 and the first rack 421 to mesh in opposite directions. The meshing clearance between the teeth results in a certain amount of movement margin for the first rack 421 during each reversal. This meshing clearance causes uneven friction throughout the transmission chain, resulting in a certain amount of axial movement in the first rack 421 each time it reverses direction. This axial movement of the first rack 421 is transmitted to the first damper 61, and the user can clearly observe the shaking and jamming phenomenon of the first damper 61.

[0101] The common solution to the problem of rack misalignment is to connect a torsion spring to the rack, using the spring force to apply a preload to the rack. This way, the rack is preloaded in both directions of movement, making it less prone to misalignment during reversal. However, the installation and assembly of the torsion spring is relatively complex and costly.

[0102] To solve this problem, such as Figures 9-11 As shown, in the inner wall of the limiting member 422 and the mounting groove 25, one of them is provided with an elastic arm 44, which presses against the other. The elastic force generated when the elastic arm 44 is pressed applies a preload to the limiting member 422. This preload is transmitted to the first rack 421, making it less prone to shifting when the first rack 421 reverses direction. This solves the shaking and jamming problems that occur when the first damper 61 opens and closes.

[0103] The flexible arm 44 has a simple structure and is easy to assemble, which can appropriately reduce costs.

[0104] In some embodiments, such as Figure 9 and Figure 10 As shown, an elastic arm 44 is formed on the limiting member 422. The elastic arm 44 includes a first arm 441 and a first pressure block 442. One end of the first arm 441 is connected to the limiting member 422, and the first pressure block 442 is connected to the other end of the first arm 441. The first pressure block 442 presses against the inner wall of the mounting groove 25 to cause the first arm 441 to bend and deform.

[0105] By utilizing the length of the first arm 441, the elastic arm 44 is easily bent and deformed after being compressed, generating a large elastic force. This results in minimal friction on the limiting member 422, while still providing an elastic preload. The first pressure block 442 ensures a certain contact area between the elastic arm 44 and the limiting member 422, preventing damage due to excessive stress at the contact point.

[0106] Optionally, there are two elastic arms 44, located on opposite sides of the limiting member 422.

[0107] Specifically, the elastic arm 44 is integrally formed on the limiting member 422. This eliminates the need for connection and fixation between the elastic arm 44 and the limiting member 422, saving this installation step. Furthermore, the elastic arm 44 will not loosen or fall off, preventing the possibility of the elastic arm 44 jamming the limiting member 422.

[0108] Of course, the elastic arm 44 in this application can also be machined separately and then fixed to the limiting member 422 by screws or the like.

[0109] Optionally, such as Figure 10As shown, a first clearance notch 4221 is formed on the side of the limiting member 422, and the first arm 441 is arranged along the extension direction of the mounting groove 25. The first arm 441 is connected to the side of the first clearance notch 4221. The setting of the first clearance notch 4221 allows the elastic arm 44 to bend into the first clearance notch 4221 when it is compressed, thus ensuring the elastic movement space of the elastic arm 44. Moreover, with this space guaranteed, the elastic arm 44 can also be protected by the limiting member 422. If the limiting member 422 is bumped during independent transportation when not assembled, it is not easy to hit the elastic arm 44, reducing the risk of its breakage.

[0110] Specifically, such as Figure 9 As shown, elastic arms 44 are provided on both sides of the limiting member 422, so that the elastic force applied on both sides can be balanced, reducing the large friction between the limiting member 422 and the inner wall of the mounting groove 25 after being squeezed by the elastic force.

[0111] In other embodiments, such as Figure 11 As shown, the elastic arm 44 is formed on the inner wall of the mounting groove 25. The elastic arm 44 includes a second arm 443 and a second pressure block 444. One end of the second arm 443 is connected to the side of the mounting groove 25, and the second pressure block 444 is connected to the other end of the second arm 443. The second pressure block 444 presses against the limiting member 422 to cause the second arm 443 to bend and deform.

[0112] By utilizing the length of the second arm 443, the elastic arm 44 is made easy to bend and deform under compression, generating a large elastic force. This results in minimal friction on the limiting member 422, while still providing an elastic preload. The second pressure block 442 ensures a certain contact area between the elastic arm 44 and the limiting member 422, preventing damage due to excessive stress at the contact point.

[0113] Specifically, the inner wall of the mounting groove 25 is provided with a second clearance notch 252, and one end of the second arm 443 is connected to one side of the second clearance notch 252. The second pressure block 444 is spaced apart from the other side of the second clearance notch 252. The second clearance notch 252 allows the elastic arm 44 to bend into the second clearance notch 252 when compressed, thus ensuring the elastic movement space of the elastic arm 44. In the event of an impact, the risk of breakage is reduced.

[0114] Specifically, one end of the second arm 443 is integrally formed on the inner wall of the mounting groove 25, so that the elastic arm 44 does not need to be connected and fixed to the inner wall of the mounting groove 25, saving this installation step. Moreover, the elastic arm 44 will not loosen or fall off, avoiding the possibility of the elastic arm 44 getting stuck on the limiting member 422.

[0115] Optionally, such as Figure 11As shown, the second arm 443 is provided with a thinning groove 4431, which is located at the connection point between the second arm 443 and the second pressure block 444. The thinning groove 4431 is arranged along the length of the second pressure block 444. This arrangement makes the second arm 443 thinner at the connection point with the second pressure block 444, so that when the second pressure block 444 is compressed, the thinner part of the second arm 443 is easier to bend, making the movement of the second pressure block 444 more sensitive.

[0116] In some specific embodiments, the second pressure block 444 is arranged along the extension direction of the mounting groove 25, and the thinning groove 4431 is arranged along the extension direction of the mounting groove 25 and extends through the entire second arm 443.

[0117] Further optional, such as Figure 11 As shown, the second arm 443 is provided with at least one weight-reducing hole 4432, which is arranged along the thickness direction of the second arm 443. This not only reduces the weight but also makes the second arm 443 easier to bend, thereby improving the sensitivity of the elastic arm 44.

[0118] In some embodiments, such as Figure 9 and Figure 11 As shown, at least one support rib 253 is provided on the inner wall of the mounting groove 25. The support rib 253 extends along the length of the mounting groove 25 and abuts against the limiting member 422.

[0119] In other words, the supporting rib 253 supports the limiting member 422, allowing the limiting member 422 to slide along the length of the mounting groove 25. The function of the supporting rib 253 is to support and limit the limiting member 422 while reducing the contact area between the inner wall of the mounting groove 25 and the limiting member 422, reducing friction, and making the movement of the limiting member 422 smoother when driven by the first rack 421.

[0120] In some embodiments, such as Figures 6-8 As shown, the air conditioner 10000 also includes a second gear 431 and a second rack 412. The second gear 431 is connected to the drive motor 3, and the second rack 412 meshes with the second gear 431.

[0121] The air conditioner 10000 also includes a second damper 62 movably installed at the fresh air inlet 21, and the second damper 62 is connected to the second rack 412. That is, when the fresh air module is running, the second damper 62 can open the fresh air inlet 21, and when the fresh air module stops running, the second damper 62 can close the fresh air inlet 21.

[0122] In related technologies, the dampers at the fresh air inlet 21 and the fresh air outlet 22 each use a motor to drive them, which is costly. In some solutions, to reduce the number of motors, both dampers are eliminated, resulting in poor sealing.

[0123] In this application, a drive motor 3 can be used to drive the first damper 61 and the second damper 62 to move synchronously, simultaneously opening the fresh air inlet 21 and the fresh air outlet 22, or simultaneously closing the fresh air inlet 21 and the fresh air outlet 22. This can reduce costs, and the simultaneous opening or closing of the fresh air inlet 21 and the fresh air outlet 22 can reduce noise such as howling and muffled sounds.

[0124] In some embodiments, the first gear 432 and the second gear 431 are the same gear, or they may be two gears arranged coaxially.

[0125] In some embodiments, such as Figure 2 As shown, the fresh air volute 2 includes a first volute 23 and a second volute 24, with the first volute 23 located on the side of the second volute 24 facing the heat exchange fan 51.

[0126] The second volute 24 includes a volute half 241 and a fan cover 242. The volute half 241 is located between the first volute 23 and the fan cover 242. A volute cavity V1 is formed between the first volute 23 and the volute half 241, and the fresh air fan 8 is located within the volute cavity V1. Figure 4 As shown, the first volute 23 and the volute half 241 enclose two fresh air outlets 22.

[0127] A fresh air cavity V2 is formed between the fan cover 242 and the volute half 241, and a fresh air inlet 21 is formed on the fan cover 242 and the volute half 241. Specifically, the volute half 241 has an axial ventilation port 2413 at the center in the radial direction, and the axial air inlet end of the fresh air fan 8 is arranged facing the axial ventilation port 2413.

[0128] With this configuration, a fresh air cavity V2 is formed at the air inlet of the fresh air fan 8. This fresh air cavity V2 can cover the axial air inlet of the fresh air fan 8. The fresh air cavity V2 can accommodate air, allowing air to enter the fresh air fan 8 axially from the fresh air cavity V2, thereby improving the air intake efficiency of the fresh air fan 8 and reducing air intake loss.

[0129] If condensation occurs in the fresh air cavity V2, the condensation is more likely to remain in the fresh air cavity V2 and is less likely to enter the volute cavity V011 and be blown into the room, thus avoiding the situation where the fresh air module blows water.

[0130] In some embodiments, the air conditioner 10000 may include: a purification component, as shown in the reference. Figure 9The purification component is located within the fresh air duct, thus purifying the fresh air blown into the room and improving the cleanliness of the indoor air. Specifically, the purification component is installed inside the fresh air chamber V2, meaning it is located at the axial air intake end of the fresh air fan 8. The rotation of the fresh air fan 8 allows outdoor air to enter the fresh air volute 2 from the fresh air inlet 21, and also allows the outdoor air entering the fresh air volute 2 to pass through the purification component before entering the room from the fresh air outlet 22.

[0131] This allows the fresh airflow to pass almost vertically over the purification unit, further reducing fresh air intake consumption and increasing fresh air volume. Furthermore, when the indoor heat exchanger 2 is in cooling mode, causing condensation in the fresh air, the condensation remains on the purification unit as the air flows through it, further preventing water from being blown out of the fresh air module.

[0132] Furthermore, the purification component is connected to the second volute 24, which facilitates the assembly of the purification component and prevents it from interfering with the fresh air fan 8.

[0133] In some embodiments, such as Figure 7 As shown, the drive motor 3 is mounted on the second volute 24, for example, it can be mounted on the fan cover 242 or the volute half 241. Specifically, the fan cover 242 and the volute half 241 enclose a cavity V4, and the drive motor 3, the first gear 432 and the first rack 421, the second gear 431 and the second rack 412 are located within the cavity V4. Figure 7 As shown, the fan cover 242 and the volute half 241 surround the mounting groove 25, and the cavity V4 is connected to one end of the mounting groove 25 so that the first rack 421 can be connected to the limiting member 422.

[0134] This integrates the damper drive mechanism onto the second volute 24, and the fan cover 242 and the volute half 241 are detachably connected, facilitating assembly and maintenance.

[0135] In this specification, the terms "embodiment," "example," 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. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0136] 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. An air conditioner (10000), comprising: Body (1000), said body (1000) includes: The housing (1) has an accommodating cavity (S1) inside, and a heat exchange air inlet (11) and a heat exchange air outlet (12) are formed on the housing (1). A base (7) is disposed in the accommodating cavity (S1), and a volute air duct (S2) is formed thereon; A heat exchange fan (51) is installed in the volute duct (S2) so that when it rotates, it draws indoor air into the volute duct (S2) through the heat exchange inlet (11) and blows the air in the volute duct (S2) out of the heat exchange outlet (12) into the room. The first motor (52) is disposed in the accommodating cavity (S1) and located at one end of the heat exchange fan (51) along its length, and is used to drive the heat exchange fan (51) to rotate. Its characteristic is that it further includes: Fresh air volute (2), a fresh air duct is formed inside the fresh air volute (2), and a fresh air inlet (21) and a fresh air outlet (22) are formed on the fresh air volute (2); Fresh air fan (8), the fresh air fan (8) is installed inside the fresh air volute (2); A drive motor (3) is mounted on the fresh air volute (2); The first gear (432) is connected to the drive motor (3); The first rack (421) meshes with the first gear (432); in, The fresh air volute (2) is provided with an installation groove (25), and the air conditioner (10000) also includes a limiting member (422) that is slidably fitted in the installation groove (25). The limiting member (422) is connected to the first rack (421), and one end of the installation groove (25) is a slot (251). The housing (1) is provided with a first air outlet (13) corresponding to the slot (251) and the fresh air outlet (22). The air conditioner (10000) also includes a first damper (61) movably installed on the first air outlet (13). The first damper (61) is connected to the limiting member (422). One of the limiting member (422) and the inner wall of the mounting groove (25) is provided with an elastic arm (44) and is pressed against the other.

2. The air conditioner (10000) according to claim 1, characterized in that, The elastic arm (44) is formed on the limiting member (422), and the elastic arm (44) includes: A first arm (441), one end of which is connected to the limiting member (422); The first pressure block (442) is connected to the other end of the first arm (441). The first pressure block (442) presses against the inner wall of the mounting groove (25) to cause the first arm (441) to bend and deform.

3. The air conditioner (10000) according to claim 2, characterized in that, The elastic arms (44) are two in number and are located on opposite sides of the limiting member (422).

4. The air conditioner (10000) according to claim 2, characterized in that, The elastic arm (44) is integrally formed on the limiting member (422).

5. The air conditioner (10000) according to claim 2, characterized in that, The limiting member (422) has a first clearance notch (4221) formed on its side, and the first arm (441) is arranged along the extension direction of the mounting groove (25). The first arm (441) is connected to the side of the first clearance notch (4221).

6. The air conditioner (10000) according to claim 1, characterized in that, The elastic arm (44) is formed on the inner wall of the mounting groove (25), and the elastic arm (44) includes: The second arm (443) has one end connected to the side of the mounting groove (25); The second pressure block (444) is connected to the other end of the second arm (443). The second pressure block (444) presses against the limiting member (422) to cause the second arm (443) to bend and deform.

7. The air conditioner (10000) according to claim 6, characterized in that, The inner wall of the mounting groove (25) is provided with a second clearance notch (252), and one end of the second arm (443) is connected to one side of the second clearance notch (252); The second pressure block (444) is spaced apart from the other side of the second clearance notch (252).

8. The air conditioner (10000) according to claim 6, characterized in that, The second arm (443) is provided with a thinning groove (4431), which is located at the connection between the second arm (443) and the second pressure block (444), and the thinning groove (4431) is arranged along the length direction of the second pressure block (444); The second arm (443) is provided with at least one weight reduction hole (4432), which is arranged along the thickness direction of the second arm (443).

9. The air conditioner (10000) according to any one of claims 1-8, characterized in that, At least one support rib (253) is provided on the inner wall of the mounting groove (25), and the support rib (253) extends along the length direction of the mounting groove (25); The supporting rib (253) abuts against the limiting member (422).

10. The air conditioner (10000) according to any one of claims 1-8, characterized in that, Also includes: The second gear (431) is connected to the drive motor (3); The second rack (412) meshes with the second gear (431); in, The air conditioner (10000) also includes a second damper (62) movably installed on the fresh air inlet (21), the second damper (62) being connected to the second rack (412).

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