Air conditioner and fresh air module thereof

Abstract

The utility model provides an air conditioner and a fresh air module thereof, the fresh air module comprises a shell and a centrifugal fan, and the shell defines an air mixing cavity; an air outlet, a fresh air inlet and an indoor air inlet are formed in the wall surface of the air mixing cavity; the indoor air inlet is configured to communicate with an indoor area, and the fresh air inlet is configured to communicate with an outdoor area; the centrifugal fan is arranged in the air mixing cavity; the centrifugal fan and the fresh air inlet are coaxially arranged; the indoor air inlet is formed in the peripheral side of the fresh air inlet and corresponds to the centrifugal fan in the axial direction of the centrifugal fan; and the centrifugal fan is configured to promote the formation of airflow which enters from the fresh air inlet and / or the indoor air inlet and is blown out from the air outlet. The temperature difference between the air outlet temperature of the fresh air module and the indoor temperature is small, and the fresh air module has the advantage of being good in air outlet feeling.

Description

Technical Field

[0001] This utility model relates to the technical field of air conditioners, and in particular to an air conditioner and its fresh air module. Background Technology

[0002] Air conditioners in related technologies have a fresh air function, which filters and purifies outdoor air before blowing it directly into the room, thereby bringing fresh outdoor air into the room and improving the user experience. However, there is a certain temperature difference between the outdoor and indoor environments, especially in winter or summer when the temperature difference is large. When the air conditioner in related technologies blows fresh air into the indoor area, it not only makes the airflow feel poor, but also causes uneven indoor temperature, resulting in a poor user experience. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide an air conditioner and its fresh air module that overcome or at least partially solve the above problems.

[0004] One objective of this invention is to solve the problems of uneven indoor temperature and poor airflow when existing air conditioners introduce fresh air into the room.

[0005] Specifically, this utility model proposes a fresh air module.

[0006] The new air module of this utility model includes: a housing defining a mixing chamber; an air outlet, a fresh air inlet, and an indoor air inlet are provided on the wall of the mixing chamber; the indoor air inlet is configured to communicate with an indoor area, and the fresh air inlet is configured to communicate with an outdoor area; a centrifugal fan is disposed in the mixing chamber; the centrifugal fan is coaxially disposed with the fresh air inlet; the indoor air inlet is disposed on the outer periphery of the fresh air inlet and corresponds to the centrifugal fan in the axial direction; the centrifugal fan is configured to promote the formation of an airflow that enters through the fresh air inlet and / or the indoor air inlet and is blown out through the air outlet.

[0007] In some embodiments, the opening area of ​​the indoor air inlet is larger than the opening area of ​​the fresh air inlet; the ratio of the opening area of ​​the indoor air inlet to the opening area of ​​the fresh air inlet is 1.5-3.

[0008] In some embodiments, the fresh air module further includes a baffle plate, which is rotatably disposed at the indoor air inlet to close or open the indoor air inlet.

[0009] In some embodiments, the wind deflector includes a plate body and a rotating shaft, the rotating shaft being rotatably connected to the housing; the rotating shaft is connected to the middle portion of the plate body.

[0010] In some embodiments, the rotating shaft is arranged in a transverse direction; the air outlet is disposed on the top wall of the mixing chamber; the fresh air module further includes a driving device, which is mounted on the housing; the driving device is configured to drive the baffle plate to rotate, and is configured to drive the baffle plate to rotate to a position that guides the incoming air downward into the mixing chamber.

[0011] In some embodiments, the wind deflector has a limiting member at one end in the lateral direction; the limiting member is capable of contacting the housing, and when the limiting member contacts the housing, the wind deflector rotates to a position where its lower part is closer to the inner side of the mixing chamber than its upper part.

[0012] In some embodiments, the wind deflector is provided with a plurality of turbulence protrusions, which are spaced apart.

[0013] In some embodiments, the wind deflector is provided with one or more supporting ribs extending laterally; or, the wind deflector is provided with one or more supporting ribs extending vertically.

[0014] In some embodiments, a plurality of the turbulence protrusions are disposed on the support rib, and the plurality of turbulence protrusions are spaced apart along the extending direction of the support rib; the plurality of turbulence protrusions are integrally formed with the support rib.

[0015] The air conditioner of this utility model includes the fresh air module described in any of the above-mentioned claims.

[0016] The fresh air module of this embodiment has an air outlet, a fresh air inlet, and an indoor air inlet on the wall of its mixing chamber. A centrifugal fan is installed in the mixing chamber to draw in both outdoor and indoor air. The indoor air inlet corresponds to the centrifugal fan axially, allowing the fan to draw sufficient indoor air into the mixing chamber, ensuring uniform mixing of indoor and fresh air. This mixing of indoor and outdoor air within the mixing chamber before expelling it from the air outlet reduces the temperature difference between the airflow and the indoor temperature, resulting in a better airflow feel and solving the problem of uneven indoor temperature after the fresh air module delivers air, thus improving the user experience.

[0017] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0018] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0019] Figure 1 This is a schematic structural diagram of the fresh air module according to an embodiment of the present utility model;

[0020] Figure 2 This is a schematic cross-sectional structural diagram of the fresh air module according to an embodiment of the present utility model;

[0021] Figure 3 This is another schematic cross-sectional view of the fresh air module according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic structural diagram of the fresh air module according to an embodiment of the present utility model;

[0023] Figure 5 This is a schematic structural diagram of the windbreak plate according to an embodiment of the present utility model;

[0024] Figure 6 This is a schematic structural diagram of the windbreak plate according to an embodiment of the present utility model;

[0025] Figure 7 This is a schematic structural diagram of the fresh air module according to an embodiment of the present utility model;

[0026] Figure 8 This is a schematic structural diagram of the windbreak plate according to an embodiment of the present utility model;

[0027] Figure 9 This is a schematic structural diagram of an air conditioner according to an embodiment of the present utility model.

[0028] Figure label:

[0029] Fresh air module 100; housing 110; mixing chamber 120; air outlet 121; fresh air inlet 122; indoor air inlet 123; centrifugal fan 130; wind deflector 140; plate 141; rotating shaft 142; limiting component 143; turbulence protrusion 144; supporting rib 145; drive device 150; air conditioner 200. Detailed Implementation

[0030] The following reference Figures 1 to 9This invention describes an air conditioner and its fresh air module according to embodiments of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0031] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. 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.

[0034] The fresh air module 100 of this utility model is described below with reference to the accompanying drawings.

[0035] like Figures 1-4 As shown, the fresh air module 100 of this utility model embodiment includes a housing 110 and a centrifugal fan 130.

[0036] The housing 110 defines a mixing chamber 120, and the wall of the mixing chamber 120 is provided with an air outlet 121, a fresh air inlet 122 and an indoor air inlet 123.

[0037] The indoor air inlet 123 is configured to connect to the indoor area, that is, the indoor air inlet 123 can be directly connected to the indoor area; or, the indoor air inlet 123 can also be indirectly connected to the indoor area through the air intake structure, for example, the indoor air inlet 123 is indirectly connected to the indoor area through a duct.

[0038] The fresh air inlet 122 is configured to connect to the outdoor area, meaning that the fresh air inlet 122 can directly connect to the outdoor area through the wall. Alternatively, the fresh air inlet 122 can also indirectly connect to the outdoor area through an air intake structure, for example, through a fresh air duct installed in the wall.

[0039] A centrifugal fan 130 is disposed in the mixing chamber 120, between the fresh air inlet 122, the indoor air inlet 123, and the air outlet 121. The centrifugal fan 130 is coaxially arranged with the fresh air inlet 122. The indoor air inlet 123 is located on the outer periphery of the fresh air inlet 122 and corresponds to the centrifugal fan 130 in the axial direction. The coaxial arrangement of the fresh air inlet 122 and the centrifugal fan 130 allows the fresh air to be evenly distributed in the inlet area of ​​the centrifugal fan 130. The axial alignment of the indoor air inlet 123 with the centrifugal fan 130 allows the centrifugal fan 130 to draw sufficient indoor air into the mixing chamber 120 and evenly distribute it within the centrifugal fan 130, thus ensuring uniform mixing of the indoor air and the fresh air.

[0040] The centrifugal fan 130 is configured to induce an airflow that enters through the fresh air inlet 122 and / or the indoor air inlet 123 and exits through the air outlet 121. The fresh air inlet 122 and the indoor air inlet 123 can be opened simultaneously, and the fresh air inlet 122 can also be opened individually. When the fresh air inlet 122 and the indoor air inlet 123 are open simultaneously, the centrifugal fan 130 draws fresh outdoor air and indoor air into the mixing chamber 120 through the fresh air inlet 122 and the indoor air inlet 123, respectively; or, when the fresh air inlet 122 is opened individually, the centrifugal fan 130 draws fresh outdoor air into the mixing chamber 120 through the fresh air inlet 122.

[0041] When the centrifugal fan 130 is running, it can not only introduce a large volume of air into the mixing chamber 120, but also generate centrifugal force through the rotation of its impeller, causing the gas to enter the impeller axially from the centrifugal fan 130 and then flow radially along the impeller. Furthermore, the airflow follows the impeller's rotation and rotates around the rotation axis of the centrifugal fan 130 within the mixing chamber 120, thereby achieving a better mixing effect between the fresh air and the indoor air.

[0042] Specifically, both the fresh air inlet 122 and the indoor air inlet 123 are located on the side wall of the mixing chamber 120, and the air outlet 121 is located on the top wall of the mixing chamber 120. The fresh air inlet 122 and the indoor air inlet 123 are spaced apart in the vertical direction, for example... Figure 1 As shown, the fresh air inlet 122 is located below the indoor air inlet 123. When indoor air flows through the mixing chamber 120 to the air outlet 121, it mixes with the fresh air flowing above it, thus improving the mixing effect.

[0043] Compared with related technologies, the fresh air module 100 of this embodiment has an air outlet 121, a fresh air inlet 122, and an indoor air inlet 123 on the wall of the mixing chamber 120 of its housing 110. A centrifugal fan 130 is installed in the mixing chamber 120 to facilitate the entry of outdoor and indoor air. The indoor air inlet 123 corresponds to the centrifugal fan 130 axially, allowing the centrifugal fan 130 to draw sufficient indoor air into the mixing chamber 120, ensuring uniform mixing of indoor and fresh air. By mixing indoor and outdoor air in the mixing chamber 120 before blowing it out from the air outlet 121, the temperature difference between the airflow from the fresh air module 100 and the indoor temperature is reduced, resulting in a better airflow feel and solving the problem of uneven indoor temperature after the fresh air module 100 delivers air indoors, thus improving the user experience.

[0044] In some embodiments, such as Figure 1 As shown, the opening area of ​​the indoor air inlet 123 is larger than the opening area of ​​the fresh air inlet 122. That is to say, when the indoor air inlet 123 is fully open, the air intake of the indoor air inlet 123 is greater than the air intake of the fresh air inlet 122. As a result, after the fresh air in the mixing chamber 120 is mixed with the indoor air, the temperature of the mixed air is closer to the indoor temperature. Therefore, the airflow blown by the fresh air module 100 of this embodiment of the present invention has a better feel, and the indoor temperature can be more uniform after the fresh air module 100 delivers air to the room.

[0045] Optionally, the ratio of the opening area of ​​the indoor air inlet 123 to the opening area of ​​the fresh air inlet 122 is 1.5-3. Optionally, the ratio of the opening area of ​​the indoor air inlet 123 to the opening area of ​​the fresh air inlet 122 is 1.6-2.7. Optionally, the ratio of the opening area of ​​the indoor air inlet 123 to the opening area of ​​the fresh air inlet 122 is 1.9-2.2. This not only ensures that the air intake volume of the indoor air inlet 123 is greater than that of the fresh air inlet 122, resulting in a better airflow from the fresh air module 100, but also prevents insufficient fresh air from entering the mixing chamber 120, thereby ensuring high air quality in the airflow from the fresh air module 100.

[0046] The ratio of the opening area of ​​the indoor air inlet 123 to the opening area of ​​the fresh air inlet 122 is, but is not limited to, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.3, 2.5, 2.8 or 3.

[0047] In some embodiments, such as Figures 2-4 As shown, the fresh air module 100 of this embodiment further includes a baffle plate 140, which is rotatably disposed at the indoor air inlet 123 to allow the indoor air inlet 123 to be closed or opened. The rotation of the baffle plate 140 controls the closure or opening of the indoor air inlet 123, and the opening degree of the baffle plate 140 can also be adjusted to regulate the air intake volume of the indoor air inlet 123, thereby regulating the outlet air temperature of the fresh air module 100 in this embodiment to meet different user needs.

[0048] When the user activates the fresh air function, the fresh air module 100 in this embodiment can use a temperature sensor to detect the outdoor and indoor temperatures of the outdoor unit. When the temperature difference between the outdoor and indoor temperatures is less than or equal to a preset temperature difference value, the damper at the opening of the fresh air inlet 122 opens, and the baffle plate 140 closes the indoor air inlet 123, thus allowing only fresh air to enter the fresh air module 100. When the temperature difference between the outdoor and indoor temperatures is greater than the preset temperature difference value, the damper at the opening of the fresh air inlet 122 opens, and the baffle plate 140 opens to a certain degree, allowing both fresh air and indoor air to enter the fresh air module 100 simultaneously. This allows the fresh air and indoor air to mix in the mixing chamber 120, ensuring that the temperature difference between the air outlet 121 and the indoor temperature is small. The greater the temperature difference between the outdoor and indoor temperatures, the larger the opening angle of the baffle plate 140.

[0049] In some embodiments, such as Figures 1-5As shown, the rotating shaft 142 is arranged in the transverse direction, and the air outlet 121 is located on the top wall of the mixing chamber 120. The fresh air module 100 also includes a drive device 150, which is installed in the housing 110. The drive device 150 is configured to drive the baffle plate 140 to rotate, and is configured to at least drive the baffle plate 140 to a position that guides the incoming air downward into the mixing chamber 120. That is, when the user turns on the fresh air function, the drive device 150 can drive the baffle plate 140 to rotate to an angle that tilts towards the mixing chamber 120, with the inner end of the baffle plate 140 located below its outer end. As a result, when indoor air enters the mixing chamber 120 through the indoor air inlet 123, the indoor air is guided downward by the baffle plate 140, mixes with the fresh air, and then blows upward from the air outlet 121. This prolongs the mixing time between indoor air and fresh air, thus further improving the mixing effect and making the outlet air temperature of the fresh air module 100 in this embodiment more uniform, resulting in a better airflow feel.

[0050] Alternatively, the drive unit 150 may be an electric motor.

[0051] In some embodiments, such as Figures 5-8 As shown, the wind deflector 140 includes a plate body 141 and a rotating shaft 142, which is rotatably connected to the housing 110. The rotating shaft 142 is connected to the middle of the plate body 141. That is, the rotating shaft 142 divides the plate body 141 into an upper and a lower part, and the area of ​​the upper part of the plate body 141 is approximately the same as the area of ​​the lower part. Therefore, when the wind deflector 140 closes the indoor air inlet 123, the wind pressure on the upper and lower parts of the plate body 141 is approximately the same, thereby preventing the wind deflector 140 from tending to rotate around the rotating shaft 142. This not only improves the sealing effect of the wind deflector 140 but also reduces the load on the drive device 150. On the other hand, when the wind deflector 140 is open, a portion of it is located within the mixing chamber 120, thereby reducing the space occupied by the wind deflector 140 after it is opened and improving the user experience.

[0052] Furthermore, such as Figure 5 As shown, a limiting member 143 is provided on one end of the baffle plate 140 in the lateral direction. The limiting member 143 can contact the housing 110, and when the limiting member 143 contacts the housing 110, the baffle plate 140 rotates to a position where its lower part is closer to the inner side of the mixing chamber 120 than its upper part. Specifically, the limiting member 143 is provided on the outer surface of the baffle plate 140, and the limiting member 143 protrudes outward and extends downward. Thus, the rotation angle of the baffle plate 140 is limited by the limiting member 143, so that the indoor air is guided downward by the baffle plate 140, mixes with the fresh air, and is then blown upward from the air outlet 121. This prolongs the mixing time of indoor air and fresh air, and the structure is simple and easy to manufacture.

[0053] In other embodiments, the extending direction of the limiting member 143 is perpendicular to the extending direction of the baffle 140, so that when the limiting member 143 contacts the housing 110, the baffle 140 is in a horizontal state, so that the opening of the baffle 140 is at its maximum.

[0054] In some embodiments, such as Figure 8 As shown, the wind deflector 140 is provided with multiple turbulence protrusions 144, which are spaced apart. When the wind deflector 140 is open, indoor air passes through the multiple turbulence protrusions 144, making the indoor airflow more turbulent, thereby improving the mixing effect between the indoor air and the fresh air in the mixing chamber 120 after the indoor air enters the mixing chamber 120. Therefore, it further improves the temperature uniformity of the air outlet of the fresh air module 100 in this embodiment.

[0055] In some embodiments, such as Figure 7 As shown, the wind deflector 140 is provided with one or more supporting ribs 145 extending laterally. The wind deflector 140 is also provided with one or more supporting ribs 145 extending vertically. By providing at least one supporting rib 145 on the wind deflector 140, the structural strength of the wind deflector 140 is improved. Consequently, even when the wind deflector 140 is subjected to significant pressure, it will not deform, thus extending its service life and improving its sealing effect when the wind deflector 140 closes the indoor air inlet 123.

[0056] Furthermore, such as Figure 8 As shown, multiple turbulence protrusions 144 are disposed on the support rib 145, and the multiple turbulence protrusions 144 are spaced apart along the extending direction of the support rib 145. The multiple turbulence protrusions 144 and the support rib 145 are integrally formed. Thus, the multiple turbulence protrusions 144 and the support rib 145 are integrally formed and combined into one unit, which not only realizes the turbulence effect of the multiple turbulence protrusions 144 on the indoor airflow and the support rib 145 on the wind deflector 140, but also reduces the structural redundancy of the wind deflector 140.

[0057] like Figure 9 As shown, the air conditioner 200 of this utility model embodiment includes the fresh air module 100 of any of the above embodiments.

[0058] The air conditioner 200 of this embodiment has an air outlet 121, a fresh air inlet 122, and an indoor air inlet 123 on the wall of the mixing chamber 120 of the housing 110 of the fresh air module 100. A centrifugal fan 130 is installed in the mixing chamber 120 to facilitate the entry of outdoor and indoor air. The indoor air inlet 123 corresponds to the centrifugal fan 130 axially, allowing the centrifugal fan 130 to draw sufficient indoor air into the mixing chamber 120, ensuring uniform mixing of indoor and fresh air. By mixing indoor and outdoor air in the mixing chamber 120 before blowing it out from the air outlet 121, the temperature difference between the airflow from the fresh air module 100 and the indoor temperature is reduced, resulting in a better airflow and solving the problem of uneven indoor temperature after the fresh air module 100 delivers air into the room, thus improving the user experience.

[0059] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A fresh air module, characterized in that The new air module comprises: a housing defining a mixing chamber; the mixing chamber is provided with an air outlet, a fresh air inlet and an indoor air inlet on the wall surface of the mixing chamber; the indoor air inlet is configured to communicate with an indoor area, and the fresh air inlet is configured to communicate with an outdoor area; a centrifugal fan is arranged in the mixing chamber; the centrifugal fan is coaxially arranged with the fresh air inlet; the indoor air inlet is arranged on the outer peripheral side of the fresh air inlet and corresponds to the centrifugal fan in the axial direction of the centrifugal fan; the centrifugal fan is configured to facilitate the formation of an air flow entering from the fresh air inlet and / or the indoor air inlet and blown out of the air outlet.

2. The new air module according to claim 1, wherein: an opening area of the indoor air inlet is greater than an opening area of the fresh air inlet; a ratio of the opening area of the indoor air inlet to the opening area of the fresh air inlet is 1.5-3.

3. The fresh air module of claim 1, wherein, Further comprising: a wind baffle rotatably arranged at the indoor air inlet to close or open the indoor air inlet.

4. The new air module according to claim 3, wherein: the wind baffle comprises a baffle body and a rotating shaft, the rotating shaft is rotatably connected with the housing; and the rotating shaft is connected with the middle part of the baffle body.

5. The new air module according to claim 4, wherein: the rotating shaft is arranged in a transverse direction; and the air outlet is arranged on the top wall of the mixing chamber; the new air module further comprises a driving device mounted on the housing; the driving device is configured to drive the wind baffle to rotate and is configured to drive the wind baffle to rotate to at least a position at which the incoming air is guided to blow downward into the mixing chamber.

6. The new air module according to claim 4, wherein: the wind baffle is provided with a limiting piece on one end in the transverse direction; the limiting piece can contact the housing, and when the limiting piece contacts the housing, the wind baffle is rotated to a position at which the lower part is closer to the inner side of the mixing chamber than the upper part.

7. The new air module according to claim 3, wherein: the wind baffle is provided with a plurality of turbulence protrusions, and the plurality of turbulence protrusions are arranged at intervals.

8. The new air module according to claim 7, wherein: the wind baffle is provided with one or more support ribs extending in the transverse direction; or the wind baffle is provided with one or more support ribs extending in the vertical direction.

9. The new air module according to claim 8, wherein: the plurality of turbulence protrusions are arranged on the support ribs and are arranged at intervals along the extension direction of the support ribs; and the plurality of turbulence protrusions are integrally formed with the support ribs.

10. An air conditioner characterized by comprising: The new air module according to any one of claims 1-9.

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