Household central air conditioner

Abstract

The utility model relates to the technical field of air conditioners, and discloses a household central air conditioner which comprises an indoor unit, an outdoor unit, an indoor unit and an outdoor unit. The air duct shell is connected with an exhaust outlet of the indoor unit and defines a flow channel, the first end of the flow channel communicates with the exhaust outlet of the indoor unit, and the air duct shell is provided with a first air outlet and a second air outlet which communicate with the flow channel; the air outlet adjusting valve is rotatably arranged in the air channel shell and divides the flow channel into a first air outlet channel and a second air outlet channel, the first air outlet communicates with the first air outlet channel, the second air outlet communicates with the second air outlet channel, and the air outlet adjusting valve is used for adjusting airflow in the flow channel to flow out along the first air outlet and / or the second air outlet. The air outlet volume can be accurately controlled, the air volume loss can be effectively reduced, and then the energy efficiency ratio of the household central air conditioner is increased.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, for example, to a household central air conditioner. Background Art

[0002] At present, with the growth of social economy and the continuous improvement of people's living standards, people have higher and higher requirements for the comfort of living environment. Air conditioning has been widely popularized in residential, living and office environments. With the rapid development of the real estate industry, the per capita living area has increased significantly, and the demand for air conditioning in the residential field has also increased significantly. Traditional split air conditioners still occupy the main market share, and there are also some multi-split air conditioners, but they have exposed obvious shortcomings. Residential air conditioners are in urgent need of upgrading. Residential air conditioners should develop in the direction of comfort, integration, centralization, efficiency and beauty. Therefore, household central air conditioners are increasingly accepted by the public, and the proportion of installation is increasing year by year.

[0003] The related art discloses a variable air volume one-to-multi-family central air conditioner, which includes an outdoor unit, an indoor unit, and an air duct of a direct expansion air conditioning system, and is characterized in that the end of the air duct of each indoor unit is provided with 1 to 3 variable air volume terminal air induction devices. Two indoor units are used, and the end of the air duct of each indoor unit is provided with two variable air volume terminal air induction devices, and the terminal air induction devices are equipped with crossflow centrifugal fans, crossflow fans or axial flow fans and adjustable speed motors.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] In the related technology, the variable air volume one-to-many central air conditioner, the terminal air induced draft device adjusts the air volume by utilizing the start and stop and speed of the fan. When the fan stops, the air blown out of some indoor units can still be blown out from the terminal air induced draft device under the action of the indoor unit fan, which will cause inaccurate air volume control and energy waste, resulting in relatively low air conditioning energy consumption.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiments provide a household central air conditioner to solve the problem of relatively low energy consumption caused by inaccurate air volume control of household central air conditioners in the related art.

[0009] An embodiment of a first aspect of the present application provides a household central air conditioner, the household central air conditioner comprising: an indoor unit having an exhaust vent;

[0010] An air duct shell is connected to the exhaust port of the indoor unit and defines a flow channel, a first end of the flow channel is communicated with the exhaust port of the indoor unit, and the air duct shell is provided with a first air outlet and a second air outlet communicated with the flow channel;

[0011] The air outlet regulating valve is rotatably disposed in the air duct shell and divides the flow channel into a first air outlet duct and a second air outlet duct. The first air outlet is connected to the first air outlet duct, and the second air outlet is connected to the second air outlet duct. The air outlet regulating valve is used to adjust the airflow of the flow channel to flow out along the first air outlet and / or the second air outlet.

[0012] In some optional embodiments, the air outlet regulating valve includes:

[0013] A shell body is disposed in the air duct shell and extends along the air flow direction, and defines a first air outlet duct and a second air outlet duct together with the shell body;

[0014] The baffle is rotatably connected to the housing and is located at an end of the housing facing the indoor unit and is rotatable around the housing. The baffle can rotate between a first position, a second position and a third position.

[0015] Among them, when the baffle is in the first position, the baffle blocks the second air outlet duct so that the air of the indoor unit flows out from the first air outlet; when the baffle is in the second position, the baffle blocks the first air outlet duct so that the air from the indoor unit flows out from the second air outlet, and when the baffle is in the third position, the first air outlet duct and the second air outlet duct are both connected to the exhaust port, so that the air from the indoor unit flows out from the first air outlet and the second air outlet.

[0016] In some optional embodiments, when the baffle is in the first position or the second position, one end of the baffle away from the shell abuts against the inner wall of the air duct shell and the baffle is inclined along the air flow direction to guide the air flow to the first air outlet duct or the second air outlet duct.

[0017] In some optional embodiments, when the baffle is in the third position, the baffle extends along the air flow direction to evenly distribute the outgoing air flow.

[0018] In some optional embodiments, the air outlet regulating valve further includes: a motor, which is drivingly connected to the baffle plate and is used to drive the baffle plate to automatically switch between the first position, the second position and the third position.

[0019] In some optional embodiments, the household central air conditioner further includes: a human sensing detection device electrically connected to the air outlet regulating valve, and the human sensing detection device is configured to control the operation of the air outlet regulating valve according to the detection result of the human sensing detection device.

[0020] In some optional embodiments, the human sensing detection device includes:

[0021] Millimeter wave sensors, the number of which is multiple, and the number of which is the same as the sum of the first air outlet and the second air outlet and are arranged correspondingly; or,

[0022] There are multiple centimeter wave sensors, and the number of the centimeter wave sensors is the same as the sum of the first air outlet and the second air outlet and is arranged correspondingly.

[0023] In some optional embodiments, the household central air conditioner also includes: a secondary air supply mechanism, which is arranged in the air duct shell and located at the first air outlet or the second air outlet, and is used to drive the air in the first air outlet duct to flow out from the first air outlet or the air in the second air outlet duct to flow out from the second air outlet.

[0024] In some optional embodiments, the indoor unit is provided with a return air outlet, the first air outlet and the indoor unit are arranged in the same indoor space, and the indoor space where the first air outlet is located is connected to the indoor space where the second air outlet is located.

[0025] In some optional embodiments, the household central air conditioner further includes: a return air filter, which is covered at the return air outlet and is used to filter the air flowing through the return air outlet.

[0026] The household central air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0027] By providing an air outlet regulating valve and rotatably arranging the air outlet regulating valve in the air duct shell, the air outlet regulating valve can be rotated to a position where the first air outlet duct is blocked or the second air outlet duct is blocked, so that the first air outlet duct is disconnected from the exhaust port or the second air outlet duct is disconnected from the exhaust port, thereby preventing air from flowing out of the first air outlet or the second air outlet. The air outlet regulating valve can also be rotated to a position where both the first air outlet duct and the second air outlet duct are connected to the exhaust port, so that air is discharged from the first air outlet and the second air outlet at the same time. Compared with the adjustment method in the related art, this embodiment can accurately control the air volume, effectively reduce the air volume loss, and thus improve the energy efficiency ratio of the household central air conditioner.

[0028] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0030] Figure 1 is a structural schematic diagram of a household central air conditioner provided by an embodiment of the present disclosure;

[0031] Figure 2 It is a partial structural diagram of a household central air conditioner provided by an embodiment of the present disclosure;

[0032] Figure 3 is a structural schematic diagram of a baffle provided by an embodiment of the present disclosure in a third position;

[0033] Figure 4 is a structural schematic diagram of a baffle provided by an embodiment of the present disclosure in a second position;

[0034] Figure 5 It is a structural schematic diagram of a baffle in a first position provided by an embodiment of the present disclosure.

[0035] Reference numerals:

[0036] 10: Outdoor unit,

[0037] 20: Indoor unit, 21: Exhaust vent, 22: Return air vent,

[0038] 30: air duct shell, 31: first air duct, 32: first air outlet, 33: second air duct, 34: second air outlet,

[0039] 40: air outlet regulating valve, 41: housing, 42: baffle, 43: motor,

[0040] 50: secondary air supply mechanism, 60: air outlet grille, 70: return air filter, 80: return air duct. DETAILED DESCRIPTION

[0041] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0042] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate to describe the disclosed embodiments here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0043] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0044] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0045] Unless otherwise stated, the term "plurality" means two or more.

[0046] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0047] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0048] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0049] Combination Figures 1 to 5As shown, the arrow in the figure indicates the direction of air flow. The embodiment of the present disclosure provides a household central air conditioner, which includes: an indoor unit 20, an air duct shell 30 and an air outlet regulating valve 40. The indoor unit 20 is provided with an exhaust port 21. The air duct shell 30 is connected to the exhaust port 21 of the indoor unit 20 and defines a flow channel. The first end of the flow channel is communicated with the exhaust port 21 of the indoor unit 20. The air duct shell 30 is provided with a first air outlet 32 ​​and a second air outlet 34 communicated with the flow channel; the air outlet regulating valve 40 is rotatably arranged in the air duct shell 30, and divides the flow channel into a first air outlet duct 31 and a second air outlet duct 33. The first air outlet 32 ​​is communicated with the first air outlet duct 31, and the second air outlet 34 is communicated with the second air outlet duct 33. The air outlet regulating valve 40 is used to adjust the airflow of the flow channel to flow out along the first air outlet 32 ​​and / or the second air outlet 34.

[0050] According to the embodiment of the present disclosure, by providing the air duct shell 30 and connecting it to the exhaust port 21 of the indoor unit 20, the air flowing out of the exhaust port 21 of the indoor unit 20 can flow into the air duct shell 30, flow along the flow channel of the air duct shell 30, and flow out of the air duct shell 30 from the first air outlet 32 ​​and the second air outlet 34. By providing the air outlet regulating valve 40 and rotatably arranging the air outlet regulating valve 40 in the air duct shell 30, the air outlet regulating valve 40 can be rotated to a position to block the first air outlet duct 31 or the second air outlet duct 33, so that the first air outlet duct 31 is disconnected from the exhaust port 21 or the second air outlet duct 33 is disconnected from the exhaust port 21, thereby preventing the airflow from the first air outlet 32 ​​or the second air outlet 34. The air outlet regulating valve 40 can also be rotated to a position where both the first air outlet duct 31 and the second air outlet duct 33 are connected to the exhaust port 21, so that air is discharged simultaneously from the first air outlet 32 ​​and the second air outlet 34. Compared with the adjustment method in the related art, this embodiment can accurately control the air volume, effectively reduce the air volume loss, and thus improve the energy efficiency ratio of the household central air conditioner.

[0051] Combination Figure 1 As shown in, optionally, a household central air conditioner includes an outdoor unit 10, and the number of indoor units 20 is two, and the two indoor units 20 are connected to the outdoor unit 10. The air duct component includes an air duct shell 30 and an air outlet regulating valve 40. The number of air duct components is two, and the air duct components are arranged in a one-to-one correspondence with the indoor units 20 for distributing the air outlet of the indoor units 20. The first air outlet 32 ​​and the second air outlet 34 of the air duct shell 30 are respectively located in the two indoor spaces.

[0052] In this way, by providing an outdoor unit 10 and two indoor units 20, and connecting the two indoor units 20 to the outdoor unit 10, one outdoor unit 10 can drive two indoor units 20 at the same time. By providing an air duct assembly and connecting the air duct assembly to the indoor unit 20, the air exhausted by the indoor unit 20 can be exhausted from two air outlets along the air duct assembly, and one indoor unit 20 can be used to adjust the air environment of two indoor spaces at the same time. The household central air conditioner of this embodiment can use two indoor units 20 to achieve the function of one-to-four traditional household central air conditioners, which can reduce the cost and installation difficulty of household central air conditioners.

[0053] Optionally, the first air outlet 32 ​​and the second air outlet 34 are respectively located in two adjacent indoor spaces.

[0054] In this way, the installation space required for the air duct housing 30 can be reduced, thereby reducing the difficulty of installation.

[0055] Optionally, the air outlet regulating valve 40 includes: a shell 41 and a baffle 42, the shell 41 is arranged in the air duct shell 30 along the air flow direction; the baffle 42 is rotatably connected to the shell 41, and the baffle 42 is located at the end of the shell 41 facing the indoor unit 20 and can rotate around the shell 41, and the baffle 42 can rotate between a first position, a second position and a third position; wherein, when the baffle 42 is in the first position, the baffle 42 blocks the second air outlet duct 33 so that the air of the indoor unit 20 flows out from the first air outlet 32; when the baffle 42 is in the second position, the baffle 42 blocks the first air outlet duct 31 so that the air outlet of the indoor unit 20 flows out from the second air outlet 34, and when the baffle 42 is in the third position, the first air outlet duct 31 and the second air outlet duct 33 are both connected to the exhaust port 21, so that the air outlet of the indoor unit 20 flows out from the first air outlet 32 ​​and the second air outlet 34.

[0056] According to the embodiment of the present disclosure, by setting a shell 41 and extending the shell 41 along the air flow direction, the shell 41 can separate the flow channel into two parts, and the shell 41 and the inner side wall of the air duct shell 30 together enclose the first air outlet duct 31 and the second air outlet duct 33. When the baffle 42 is in the first position and the second position, the air can be concentrated to avoid the waste of air volume, so as to reduce the energy consumption of the household central air conditioner and improve the energy efficiency ratio. When the baffle 42 is in the third position, the connection area between the first air outlet duct 31 and the exhaust port 21 is equal to the connection area between the second air outlet duct 33 and the exhaust port 21, and the air can be evenly distributed. By rotating the baffle 42 between the three positions, the air outlet direction and air volume distribution of the indoor unit 20 can be flexibly adjusted, so that the user can adjust the air outlet according to actual needs.

[0057] Optionally, when the baffle 42 is in the first position or the second position, one end of the baffle 42 away from the shell 41 abuts against the inner wall of the air duct shell 30 and the baffle 42 is inclined along the air flow direction to guide the air to flow toward the first air outlet duct 31 or the second air outlet duct 33.

[0058] By using the embodiment of the present disclosure, when the baffle 42 is in the first position or the second position, the baffle 42 can not only block the second air outlet duct 33 or the first air outlet duct 31, but also guide the airflow to flow to the first air outlet duct 31 or the second air outlet duct 33, thereby reducing air flow resistance and improving air outlet efficiency.

[0059] Optionally, when the baffle 42 is in the third position, the baffle 42 extends along the air flow direction to evenly distribute the outgoing air flow.

[0060] By adopting the embodiment of the present disclosure, when the baffle 42 is in the third position, the baffle 42 extends along the air flow direction, so that the connection area between the first air outlet duct 31 and the exhaust port 21 on both sides of the baffle 42 can be equal to the connection area between the second air outlet duct 33 and the exhaust port 21, thereby achieving uniform distribution of air outlet and improving the uniformity of air outlet.

[0061] Optionally, the air outlet regulating valve 40 further includes: a motor 43, which is drivingly connected to the baffle 42 and is used to drive the baffle 42 to switch between the first position, the second position and the third position.

[0062] According to the embodiment of the present disclosure, by providing the motor 43 and driving the motor 43 to the baffle 42, the user does not need to manually adjust the baffle 42, and the user can easily change the position of the baffle 42 through a remote control or an intelligent control system, thereby improving the convenience of use. In addition, the motor 43 drive can provide more precise angle control and faster response speed, and can quickly drive the baffle 42 to stop accurately at the desired position, thereby avoiding errors that may be caused by manual adjustment.

[0063] Specifically, the motor 43 is a stepping motor.

[0064] Optionally, the motor 43 is disposed in the housing 41 .

[0065] In this way, the housing 41 can reduce the noise emitted by the motor 43, improve the user experience, and compared with the arrangement in which the motor 43 is arranged in the flow channel, it can prevent the motor 43 from obstructing the air flow in the flow channel.

[0066] Optionally, the household central air conditioner further includes: a human sensing detection device, which is electrically connected to the air outlet regulating valve 40, and the human sensing detection device is configured to control the operation of the air outlet regulating valve 40 according to the detection result of the human sensing detection device.

[0067] According to the embodiment of the present disclosure, by providing a human sensing detection device and electrically connecting the human sensing detection device to the air outlet regulating valve 40, the human sensing detection device can detect whether there is a user in the space where the human sensing detection device is located and the user's movement status, and the air outlet regulating valve 40 can receive the detection result of the human sensing detection device and adjust the air outlet of the flow channel according to the detection result of the human sensing detection device. Specifically, when the human sensing detection device detects that there is a user in the indoor space, the air outlet regulating valve 40 rotates to a corresponding position, so that the air of the indoor unit 20 is blown to the indoor space where the user is located. When the human sensing detection device detects that there is no user in the indoor space, the air outlet regulating valve 40 rotates to another position to prevent the air of the indoor unit 20 from blowing to the indoor space where the user is not located, thereby reducing energy consumption and improving energy efficiency.

[0068] Optionally, the baffle 42 also has a fourth position and a fifth position. When the baffle 42 is in the fourth position, the end of the baffle 42 away from the shell 41 is inclined toward the second air outlet duct 33, so that the first air outlet duct 31 and the second air outlet duct 33 are both connected to the exhaust port 21, and most of the air flowing out of the exhaust port 21 flows to the first air outlet duct 31; when the baffle 42 is in the fifth position, the end of the baffle 42 away from the shell 41 is inclined toward the first air outlet duct 31, so that the first air outlet duct 31 and the second air outlet duct 33 are both connected to the exhaust port 21, and most of the air flowing out of the exhaust port 21 flows to the second air outlet duct 33.

[0069] In this way, the baffle 42 can adjust the flow ratio of the air outlet 21 flowing to the first air outlet duct 31 and the second air outlet duct 33 respectively, so that most of the air flows to the first air outlet duct 31 or the second air outlet duct 33, and flows out from the first air outlet 32 ​​or the second air outlet 34, so as to quickly adjust the air environment of the indoor space where the first air outlet 32 ​​or the second air outlet 34 is located.

[0070] Specifically, when the human sensing detection device detects that the number of people in the indoor space where the first air outlet 32 ​​is located is greater than the number of people in the indoor space where the second air outlet 34 is located, the baffle can be controlled to rotate to the fourth position.

[0071] Optionally, the human sensing detection device includes: a millimeter wave sensor, and the number of the millimeter wave sensors is multiple, and the number of the millimeter wave sensors is the same as the number of the first air outlet 32 ​​and the second air outlet 34 and is correspondingly arranged.

[0072] By adopting the embodiment of the present disclosure, by setting up a millimeter wave sensor, compared with an infrared sensor, the millimeter wave sensor has the characteristics of high precision and can accurately detect the presence and movement of the human body. The number of millimeter wave sensors is the same as the number of the first air outlet 32 ​​and the second air outlet 34 and is set correspondingly, that is, multiple millimeter wave sensors are respectively arranged in the space where the first air outlet 32 ​​is located and the space where the second air outlet 34 is located. The multiple millimeter wave sensors can detect whether there is a user and the user's movement in the indoor space where each first air outlet 32 ​​and each second air outlet 34 are located, so that the indoor unit 20 can more accurately judge the position, movement and posture of the human body, so as to control the air outlet regulating valve 40.

[0073] Optionally, the human sensing detection device includes: a centimeter wave sensor, and the number of the centimeter wave sensors is multiple, and the number of the centimeter wave sensors is the same as the number of the first air outlets 32 and the second air outlets 34 and is correspondingly arranged.

[0074] According to the embodiment of the present disclosure, by setting a centimeter wave sensor, the centimeter wave sensor has a high measurement accuracy and can accurately detect the position, movement and posture of the human body. The number of centimeter wave sensors is the same as the number of the first air outlet 32 ​​and the second air outlet 34 and is set accordingly. The multiple centimeter wave sensors are respectively set in the space where the first air outlet 32 ​​is located and the space where the second air outlet 34 is located. The multiple centimeter wave sensors can detect whether there is a user and the user's movement in the indoor space where each first air outlet 32 ​​and each second air outlet 34 are located, so that the indoor unit 20 can more accurately determine the position, movement and posture of the human body, so as to control the air outlet regulating valve 40.

[0075] Optionally, the household central air conditioner also includes a temperature detection device, and the temperature sensor is used to detect the temperature of each indoor space. When the temperature detection device detects that the difference between the ambient temperature at the first air outlet 32 ​​and the preset temperature is greater than the difference between the ambient temperature at the second air outlet 34 and the preset temperature, the baffle 42 rotates to the fourth position.

[0076] In this way, the ambient temperature of the first air outlet 32 ​​can be quickly adjusted, and the time required for adjusting the temperature can be shortened.

[0077] Specifically, the temperature detection device is a temperature sensor, and there are multiple temperature sensors, which are the same as the number of millimeter wave sensors and are arranged correspondingly.

[0078] Optionally, the household central air conditioner also includes: a secondary air supply mechanism 50, which is arranged at the first air outlet 32 ​​or the second air outlet 34, and is used to drive the air in the first air outlet duct 31 to flow out from the first air outlet 32 ​​or the air in the second air outlet duct 33 to flow out from the second air outlet 34.

[0079] By adopting the embodiment of the present disclosure, by providing a secondary air supply mechanism 50 and arranging the secondary air supply mechanism 50 at the first air outlet 32 ​​or the second air outlet 34, the secondary air supply mechanism 50 can increase the power of air flow, and can avoid the situation where the air has a short air outlet distance due to a large power loss in the first air outlet duct 31 or the second air outlet duct 33. Secondly, by providing the secondary air supply mechanism 50, the air supply distance requirement can be met without increasing the fan speed of the indoor unit 20, and the wind speed of the first air outlet duct 31 or the second air outlet duct 33 can be reduced, thereby reducing the noise generated by the high-speed airflow.

[0080] Specifically, when the length of the first air outlet duct 31 is greater than or equal to a preset distance, a secondary air supply module is provided at the first air outlet 32 ​​.

[0081] Optionally, the preset distance may be 5 meters, 4.5 meters, or 5.5 meters. It is understandable that the value of the preset distance is not unique.

[0082] Optionally, the second air supply mechanism includes a motor and a cross-flow fan, and the motor is drivingly connected to the cross-flow fan to drive the cross-flow fan to rotate.

[0083] In this way, the motor-driven cross-flow fan can provide stronger airflow power, effectively increasing the air supply distance and coverage. In addition, the cross-flow fan usually has a lower noise level than traditional fans, which can improve the user experience.

[0084] Optionally, the secondary air supply mechanism 50 is detachably connected to the air duct shell 30 .

[0085] In this way, since the secondary air supply mechanism 50 is disposed at the first air outlet 32 ​​or the second air outlet 34 , when the secondary air supply mechanism 50 needs to be repaired or replaced, the user can remove or install the second air supply device from the first air outlet 32 ​​or the second air outlet 34 .

[0086] Optionally, the indoor unit 20 is provided with a return air outlet 22 , the first air outlet 32 ​​and the indoor unit 20 are provided in the same indoor space, and the indoor space where the first air outlet 32 ​​is located is connected to the indoor space where the second air outlet 34 is located.

[0087] By adopting the embodiment of the present disclosure, a return air outlet 22 is set in the indoor unit 20, and the indoor space where the first air outlet 32 ​​is located is connected to the indoor space where the second air outlet 34 is located. There is no need to set a return air outlet 22 in the space where the second air outlet 34 is located, which can effectively reduce the wind noise in the indoor space where the second air outlet 34 is located, thereby improving the user experience.

[0088] Optionally, the household central air conditioner further includes: an air outlet grille 60 , which is disposed to cover the first air outlet 32 ​​and the second air outlet 34 .

[0089] By adopting the embodiment of the present disclosure, by setting an air outlet grille 60 and covering the first air outlet 32 ​​and the second air outlet 34, the air outlet grille 60 can enhance the uniformity of the airflow and avoid excessive or insufficient wind speed in local areas. In addition, it can also reduce the noise generated by the rapid flow of air and improve the quietness of the household central air conditioner during operation. In addition, the air outlet grille 60 can prevent foreign matter such as dust and debris from entering the air duct shell 30, thereby preventing the components in the air duct shell 30 from being contaminated or damaged.

[0090] Optionally, the household central air conditioner further includes: a return air filter 70 , which is disposed on the return air outlet 22 to filter the air flowing through the return air outlet 22 .

[0091] By adopting the embodiment of the present disclosure, by setting up the return air filter 70, the return air filter 70 can effectively filter dust, bacteria and other particles in the air, improve the indoor air quality, and prevent the return air outlet 22 from flowing into the indoor unit 20, causing pollution inside the air conditioner and resulting in a decrease in energy efficiency.

[0092] Optionally, the return air filter 70 is detachably connected to the indoor unit 20 .

[0093] This makes it convenient for users to carry out daily cleaning and maintenance.

[0094] Optionally, the household central air conditioner further includes: a return air duct 80 , which is connected to the indoor unit 20 and covers the return air outlet 22 .

[0095] In this way, by setting the return air duct 80, the position of the return air outlet 22 can be changed, and the distance between the return air outlet 22 and the first air outlet 32 ​​can be adjusted to avoid the situation where part of the air blown out of the first air outlet 32 ​​directly flows back to the return air outlet 22, thereby improving the air circulation efficiency of the indoor space.

[0096] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A household central air conditioner, characterized in that: include: The indoor unit is provided with an exhaust vent; An air duct shell is connected to the exhaust port of the indoor unit and defines a flow channel, a first end of the flow channel is communicated with the exhaust port of the indoor unit, and the air duct shell is provided with a first air outlet and a second air outlet communicated with the flow channel; The air outlet regulating valve is rotatably disposed in the air duct shell and divides the flow channel into a first air outlet duct and a second air outlet duct. The first air outlet is connected to the first air outlet duct, and the second air outlet is connected to the second air outlet duct. The air outlet regulating valve is used to adjust the airflow of the flow channel to flow out along the first air outlet and / or the second air outlet.

2. The household central air conditioner according to claim 1, characterized in that: The air outlet regulating valve includes: A shell body is disposed in the air duct shell and extends along the air flow direction, and defines a first air outlet duct and a second air outlet duct together with the shell body; The baffle is rotatably connected to the housing and is located at an end of the housing facing the indoor unit and is rotatable around the housing. The baffle can rotate between a first position, a second position and a third position. Among them, when the baffle is in the first position, the baffle blocks the second air outlet duct so that the air of the indoor unit flows out from the first air outlet; when the baffle is in the second position, the baffle blocks the first air outlet duct so that the air from the indoor unit flows out from the second air outlet, and when the baffle is in the third position, the first air outlet duct and the second air outlet duct are both connected to the exhaust port, so that the air from the indoor unit flows out from the first air outlet and the second air outlet.

3. The household central air conditioner according to claim 2, characterized in that: When the baffle is in the first position or the second position, one end of the baffle away from the shell abuts against the inner wall of the air duct shell and the baffle is inclined along the air flow direction to guide the air to flow toward the first air outlet duct or the second air outlet duct.

4. The household central air conditioner according to claim 2, characterized in that: When the baffle is in the third position, the baffle extends along the air flow direction to evenly distribute the outgoing air flow.

5. The household central air conditioner according to claim 2, characterized in that: The air outlet regulating valve also includes: The motor is drivingly connected to the baffle plate and is used to drive the baffle plate to automatically switch between the first position, the second position and the third position.

6. The household central air conditioner according to claim 1, characterized in that: Also includes: The human sensing detection device is electrically connected to the air outlet regulating valve, and the human sensing detection device is configured to control the operation of the air outlet regulating valve according to the detection result of the human sensing detection device.

7. The household central air conditioner according to claim 6, characterized in that: The human detection device includes: Millimeter wave sensors, the number of which is multiple, and the number of which is the same as the sum of the first air outlet and the second air outlet and are arranged correspondingly; or, There are multiple centimeter wave sensors, and the number of the centimeter wave sensors is the same as the sum of the first air outlet and the second air outlet and is arranged correspondingly.

8. The household central air conditioner according to claim 1, characterized in that: Also includes: The secondary air supply mechanism is arranged in the air duct shell and located at the first air outlet or the second air outlet, and is used to drive the air in the first air outlet duct to flow out from the first air outlet or the air in the second air outlet duct to flow out from the second air outlet.

9. The household central air conditioner according to any one of claims 1 to 8, characterized in that: The indoor unit is provided with a return air outlet, the first air outlet and the indoor unit are arranged in the same indoor space, and the indoor space where the first air outlet is located is communicated with the indoor space where the second air outlet is located.

10. The household central air conditioner according to claim 9, characterized in that: Also includes: The return air filter is installed at the return air outlet and is used to filter the air flowing through the return air outlet.

Images