Air handling unit and vehicle
By designing an integrated air intake housing and air mixing housing, combined with internal circulation dampers, external circulation dampers, and compensation dampers, the high cost problem of dual-layer flow mixed air HVAC was solved, achieving energy saving and reduced production costs.
Patent Information
- Application Number
- CN202520166966.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing dual-layer flow mixed-air HVAC technology requires complex manufacturing processes and high production costs, which cannot effectively reduce the production cost of vehicle HVAC systems.
Design an air conditioning unit with an air inlet shell and a mixing shell connected as one unit. It is equipped with an internal circulation damper, an external circulation damper, and a normally open compensation damper to achieve mixing of internal and external circulating air. The waste heat of the internal circulating air is used to heat the external circulating air, thereby reducing heating consumption.
While achieving air mixing, it reduces production costs, has significant energy-saving effects, and avoids the need for double-layer impellers and independent air conditioning chambers.
Smart Images
Figure CN223778141U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive air conditioning technology, and in particular to an air conditioning unit and vehicle. Background Technology
[0002] The Heating, Ventilation and Air Conditioning (HVAC) system is a crucial component of a vehicle, responsible for controlling the interior temperature, air circulation, and air quality. Most vehicle HVAC systems have two types of air circulation: internal and external. Internal circulation uses the warmer air from inside the vehicle for overall heating, while external circulation uses the cooler outside air for defogging and defrosting. Using either internal or external circulation alone has limitations. Internal circulation alone lacks fresh air, while external circulation alone increases the power consumption of the vehicle's heating system. Therefore, it is necessary to properly mix the internal and external air within the HVAC unit.
[0003] In the prior art, dual-layer flow mixed air HVAC is used to mix internal and external circulation. The dual-layer flow HVAC separates the vehicle's internal and external circulation into independent air conditioning chambers through a partition. The internal air and external atmosphere are introduced into the two chambers simultaneously through the air inlet through a double-layer impeller, and the internal and external circulation gases are mixed in the subsequent compartment.
[0004] However, dual-layer flow mixed air HVAC requires the use of partitions to separate independent air conditioning chambers and double-layer impellers, which requires more complex manufacturing processes and calibration operations, resulting in higher production costs. Utility Model Content
[0005] In view of this, the present invention provides an air conditioning unit and vehicle that achieves the air mixing function while reducing production costs.
[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:
[0007] This utility model provides an air conditioning unit, which includes an air inlet shell and an air mixing shell. The air inlet shell and the air mixing shell are respectively integrated cavity structures and are connected to each other. The air conditioning unit has multiple air dampers that are connected to the cavity structures. The air mixing shell has an exhaust port.
[0008] The damper includes an internal circulation damper, an external circulation damper, and a compensation damper; the internal circulation damper is located at the top of the air inlet housing, and the external circulation damper is located on the side of the air inlet housing; the compensation damper is located at the top of the air mixing housing, and the compensation damper is normally open.
[0009] Internal circulating air enters the mixing chamber through the internal circulating damper via the air inlet housing. Internal circulating air also enters the mixing chamber through the compensation damper. External circulating air enters the mixing chamber through the external circulating damper via the air inlet housing. The internal circulating air and the external circulating air are mixed in the mixing chamber and discharged through the exhaust port.
[0010] Optionally, the internal circulation damper is provided with a first rotating shaft and a first baffle, the first baffle rotating around the first rotating shaft, so that the internal circulation damper has two states: open and closed; the external circulation damper is provided with a second rotating shaft and a second baffle, the second baffle rotating around the second rotating shaft, so that the external circulation damper has two states: open and closed.
[0011] Optionally, the compensation damper and the external circulation damper are staggered.
[0012] Optionally, the outer side of the internal circulation damper is provided with a first grid structure, which is composed of multiple parallel and spaced-apart straight grid bars and multiple parallel and spaced-apart arc grid bars intersecting perpendicularly.
[0013] Optionally, the bottom of both the air inlet housing and the air mixing housing is provided with a first reinforcing rib, which is composed of multiple parallel and spaced longitudinal ribs and multiple parallel and spaced transverse ribs intersecting perpendicularly.
[0014] Optionally, the edge of the air inlet of the external circulation damper is provided with an outward folded edge, and multiple reinforcing grooves are spaced apart on the folded edge, the reinforcing grooves being distributed in a grid pattern.
[0015] Optionally, the folded edge is covered with sponge; the air inlet of the external circulation damper is provided with a second grid structure.
[0016] Optionally, a second reinforcing rib is provided along the inner wall edge of the air inlet of the compensating damper; a spare mounting hole is provided at the relative position of the air inlet of the compensating damper, and the spare mounting hole is used to install a spare baffle.
[0017] Optionally, the exhaust port is connected to a blower.
[0018] This utility model also provides a vehicle including the air conditioning unit described in any of the preceding claims.
[0019] The air conditioning unit of this invention has an internal circulation damper and an external circulation damper on the air inlet shell to introduce internal and external circulating air, respectively. Simultaneously, a normally open compensation damper is provided on the air inlet shell to continuously introduce internal circulating air into the air conditioning unit. The external and internal circulating air mix in a mixing shell connected to the air inlet shell, achieving a mixing effect. The compensation damper continuously introduces higher-temperature internal circulating air into the air conditioning unit, utilizing the waste heat of the internal circulating air to heat the mixed gas, reducing subsequent heating consumption and achieving energy-saving effects. Compared to the dual-layer flow mixing HVAC in related technologies, the air inlet shell and mixing shell in this invention are integrated, eliminating the need for separate air conditioning unit chambers for internal and external circulating air, and also eliminating the requirement for a dual-impeller blower, resulting in lower production costs. Attached Figure Description
[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:
[0021] Figure 1 This is a structural schematic diagram of an air conditioning unit according to an embodiment of the present utility model;
[0022] Figure 2 This is a schematic diagram of the airflow path of an air conditioning unit with its damper fully open, according to an embodiment of this utility model.
[0023] Figure 3 This is a top view of the structure of an air conditioning unit according to an embodiment of this utility model;
[0024] Figure 4 This is a side view of the structure of an air conditioning unit according to an embodiment of this utility model.
[0025] Explanation of reference numerals in the attached figures:
[0026] 10-Air inlet housing, 20-Air mixing housing, 30-First reinforcing rib, 11-Internal circulation damper, 111-First rotating shaft, 112-First baffle, 113-First grid, 1131-Straight grid bar, 1132-Arc grid bar, 12-External circulation damper, 121-Second rotating shaft, 123-Folded edge, 1231-Reinforcing groove, 21-Compensating damper, 22-Connecting mechanism, 211-Second reinforcing rib, 212-Spare mounting hole. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.
[0028] The terms "first," "second," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, the first object can be one or more.
[0029] It should be understood that the phrase "some embodiments" throughout the specification means that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of the present invention. Therefore, "some embodiments" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.
[0030] The following detailed description of an air conditioning unit and vehicle provided by this utility model is provided through specific embodiments.
[0031] Figure 1 A schematic diagram of the air conditioning unit in an embodiment of this utility model is shown. (Refer to...) Figure 1 The present invention provides an air conditioning unit comprising an air inlet housing 10 and an air mixing housing 20, wherein the air inlet housing 10 and the air mixing housing 20 are integrally connected cavity structures; the air inlet housing 10 and the air mixing housing 20 are connected; the air conditioning unit has multiple air dampers that are connected to the cavity structures; and the air mixing housing 20 has an exhaust port. Figure 1 (Not shown in the image); the dampers include an internal circulation damper 11, an external circulation damper 12, and a compensation damper 21; the internal circulation damper 11 is located at the top of the air inlet housing 10, and the external circulation damper 12 is located on the side of the air inlet housing 10; the compensation damper 21 is located at the top of the mixing housing 20, and the compensation damper 21 is normally open; internal circulation air enters the mixing housing 20 through the internal circulation damper 11 via the air inlet housing 10, and internal circulation air also enters the mixing housing 20 through the compensation damper 21; external circulation air enters the mixing housing 20 through the external circulation damper 12 via the air inlet housing 10, and the internal and external circulation air mix in the mixing housing 20 and then exit through the exhaust port ( Figure 1 (Not shown in the image) is discharged.
[0032] The air conditioning unit is part of a vehicle's HVAC system, primarily responsible for introducing air into the HVAC system. In an HVAC system with internal and external air circulation, the introduced air includes internal and external air. Internal air circulates mainly inside the vehicle, while external air is introduced from the atmosphere. When driving in cold conditions, the internal air has a higher temperature and can be used for interior heating, while the external air is lower in temperature and is heated before being sent to the vehicle's windows for defrosting and defogging. Running external air circulation alone requires more energy to heat the external air, while running internal air circulation alone lacks fresh external air. The introduction of fresh air affects the occupants of the vehicle. To address this, a system can be built that mixes internal and external circulating air, using the waste heat of the internal circulating air to heat the external circulating air, and using the external circulating air to introduce fresh air into the internal circulating system. Existing dual-layer flow mixed-air HVAC systems can achieve mixed operation of internal and external circulation, but they separate the air conditioning unit with fixed partitions, creating separate duct chambers for internal and external circulation, and require a double-layer impeller to introduce the internal and external circulating air. The independent duct chambers and double-layer impellers result in higher production costs for dual-layer flow mixed-air HVAC systems. Therefore, this invention provides an air conditioning unit that achieves mixed air operation while maintaining lower production costs.
[0033] In this embodiment, the air conditioning unit mainly includes an air inlet housing 10 and a mixing housing 20. The air inlet housing 10 and the mixing housing 20 are both integral cavity structures. The air inlet housing 10 and the mixing housing 20 are connected, that is, the corresponding cavity structures of the air inlet housing 10 and the mixing housing 20 are connected as one unit, and there are no components in the integral cavity structure that further divide the internal space into independent spaces. Multiple air dampers are provided on the air conditioning unit. These air dampers are connected to the cavity structure and are used to introduce air into the air conditioning unit. One end of the cavity structure of the mixing housing 20 is connected to the air inlet housing 10, and the other end of the cavity structure of the mixing housing 20 is provided with an exhaust port.
[0034] Reference Figure 2This diagram illustrates the airflow path of an air conditioning unit with its dampers fully open, according to an embodiment of the present invention. Among the multiple dampers in the air conditioning unit, an internal circulation damper 11 and an external circulation damper 12 are disposed on the air inlet housing 10, respectively for introducing internal circulating air X1 and external circulating air Y. The internal circulation damper 11 is located at the top of the air inlet housing 10, with its opening facing the top surface of the air conditioning unit and slightly tilted to the side. The external circulation damper 12 is located on the side of the air inlet housing 10, with its opening facing the side of the control panel. Both the internal and external circulation dampers can be opened and closed. When the dampers are open, the internal and external circulating air can enter the cavity of the air inlet housing 10 through their respective air inlets. Inside, the air enters the mixing housing 20 through the connection between the air inlet housing 10 and the mixing housing 20 for mixing. The cavity structure of the mixing housing 20 provides space for mixing the internal and external circulating air. The present invention has a compensation damper 21 on the top of the mixing housing 20 to introduce the internal circulating air X2. That is to say, the internal circulating air can be introduced into the air conditioning unit through the internal circulating damper 11 and the compensation damper 21 respectively. Unlike the internal circulating damper 11, the compensation damper 12 is normally open and can continuously introduce the internal circulating air X2 into the air conditioning unit. After the internal circulating air X1, X2 and the external circulating air Y are mixed in the mixing housing 20, the mixed gas Z is discharged from the exhaust port.
[0035] By setting a normally open compensating damper, and cooperating with an internal circulation damper and an external circulation damper that can be controlled to open and close, the entire air conditioning unit can have multiple air intake modes, as shown in Table 1, which illustrates the air intake modes of the air conditioning unit described in this embodiment of the invention under different states:
[0036] state External circulation damper Internal circulation damper Compensation damper Intake mode 1 open close Normally open Mixed wind 2 open open Normally open Mixed wind 3 close close Normally open Internal circulation air intake 4 close open Normally open Internal circulation air intake
[0037] Table 1
[0038] As shown in Table 1, all intake modes include internal air recirculation. Through the setting of the compensating damper, this embodiment of the invention ensures that internal recirculation can continue during vehicle HVAC operation, thus guaranteeing air circulation inside the vehicle. In addition, as shown in states 1 and 2 of Table 1, as long as the external recirculation damper is open, the entire air conditioning unit can achieve a mixing effect, injecting fresh air into the internal recirculation. When the external recirculation air temperature is lower than the internal recirculation air temperature, the internal recirculation air continuously entering the air conditioning unit from the compensating damper will also heat the air conditioning unit, causing the internal and external recirculation gases to heat up during the mixing process. The mixed gas entering the subsequent external recirculation from the air conditioning unit is preheated, thus utilizing the waste heat of the internal recirculation air, reducing the energy consumption of subsequent heating components, and achieving energy saving.
[0039] Furthermore, the air conditioning unit provided in this invention uses plastic material to reduce production costs. Of course, this invention is not limited to this; in other embodiments, the air conditioning unit can also be made of alloy.
[0040] The air conditioning unit of this invention has an internal circulation damper and an external circulation damper on the air inlet shell to introduce internal and external circulating air, respectively. At the same time, a normally open compensation damper is opened on the air inlet shell to continuously introduce internal circulating air into the air conditioning unit. The external and internal circulating air mix with each other in a mixing shell connected to the air inlet shell to achieve a mixing effect. The compensation damper continuously introduces the air conditioning unit with higher temperature internal circulating air, and uses the waste heat of the internal circulating air to heat the mixed gas, reducing subsequent heating consumption and achieving energy saving. Compared with the dual-layer flow mixing HVAC in related technologies, the air inlet shell and the mixing shell in this invention are connected as one unit, eliminating the need for separate pipe chambers for internal and external circulating air, and eliminating the requirement for a double impeller for the blower, resulting in lower production costs.
[0041] Optional, refer to Figure 3 The diagram shows a top view of the air conditioning unit in an embodiment of the present invention. The internal circulation damper 11 is provided with a first rotating shaft 111 and a first baffle 112. The first baffle 112 rotates 111 around the first rotating shaft, so that the internal circulation damper 11 has two states: open and closed. Further reference... Figure 1 The external circulation damper 12 is provided with a second rotating shaft 121 and a second baffle 122. The second baffle 122 rotates around the second rotating shaft 121, so that the external circulation damper 12 has two states: open and closed.
[0042] In the embodiment shown in this utility model, the opening and closing of the damper is achieved by rotating baffles. Specifically, a first rotating shaft 111 is set in the middle of the inner circulation damper 11, parallel to the edge of the air inlet of the inner circulation damper 11, and first baffles 112 are set on both sides of the first rotating shaft 111. The rotation of the first rotating shaft 111 is controlled by a motor, which in turn drives the rotation of the first baffles 112. When the first baffles 112 rotate to completely block the air inlet of the inner circulation damper 11, the inner circulation damper 11 is closed. In other cases, the first baffles 112 cannot completely block the air inlet of the inner circulation damper 11, and the inner circulation damper 11 is in the open state. The motor can control the rotation of the first rotating shaft 111 to adjust the angle between the first baffles 112 and the air inlet of the inner circulation damper 11, thereby controlling the flow rate and flow of the inner circulation air through the air inlet of the inner circulation damper, adjusting the proportion of inner circulation air entering the mixing shell, and achieving the effect of adjusting the mixing effect. For the external circulation damper, the same method as the internal circulation damper described in this section is used to achieve opening and closing. Similarly, the proportion of external circulation air entering the mixing chamber can be adjusted, which will not be elaborated here.
[0043] Optionally, the compensation damper 21 and the external circulation damper 12 are set to be staggered.
[0044] Reference Figure 1 In this embodiment of the invention, the opening of the external circulation damper 12 faces the side of the air conditioning unit, while the opening of the compensation damper 21 faces the top surface of the air conditioning unit. The compensation damper 21 is located on the mixing housing 20. Further referring to… Figure 3 and Figure 4 ,in, Figure 4 The diagram shows a side view of the air conditioning unit in an embodiment of the present invention, in which the compensating damper 21 and the external circulation damper 12 are staggered by a distance in both the top and side views. By staggering the compensating damper 21 and the external circulation damper 12, the internal circulation gas continuously entering the air conditioning unit from the normally open compensating damper 21 is prevented from directly escaping from the external circulation damper 12 when the external circulation damper 12 is open, thus affecting the operation of the air conditioning unit.
[0045] Optional, refer to Figure 1 The outer side of the internal circulation damper 11 is provided with a first grid structure 113, which is composed of multiple parallel and spaced straight grid bars 1131 and multiple parallel and spaced arc grid bars 1132 intersecting perpendicularly.
[0046] The outer side of the internal circulation damper 11 is provided with a first grid structure 113; (refer to...) Figure 1 and Figure 3 The first grid structure 113 is composed of multiple parallel and spaced-apart straight grid bars 1131 and multiple parallel and spaced-apart arc-shaped grid bars 1132 intersecting perpendicularly. This arrangement ensures that the first grid structure 113 completely covers the internal circulation damper 11, preventing debris from entering the air conditioning unit through the internal circulation damper 11. (Refer to...) Figure 3 The perpendicularly intersecting straight grid bars 1131 and curved grid bars 1132 are connected to the edge of the air inlet of the internal circulation damper 11, providing a certain degree of support to the edge of the internal circulation damper 11. This prevents the air inlet of the internal circulation damper 11 from deforming due to changes in air pressure inside and outside the air conditioning unit, thus affecting the opening and closing effect of the internal circulation damper 11.
[0047] Optional, refer to Figure 1 Both the air inlet housing 10 and the air mixing housing 20 are provided with a first reinforcing rib 30 at their bottom, as further referenced. Figure 4 The first reinforcing rib 30 is composed of multiple parallel and spaced longitudinal ribs and multiple parallel and spaced transverse ribs that intersect perpendicularly.
[0048] The mutually perpendicular reinforcing ribs form a mesh-like first reinforcing rib 30, which is set at the bottom of the air inlet housing 10 and the bottom of the air mixing housing 20. This is used to distribute the load of the entire air conditioning unit applied to the bottom of the air conditioning unit, increase the strength of the air inlet housing 10 and the air mixing housing 20, and prevent deformation or damage to the bottom of the air conditioning unit.
[0049] Optional, refer to Figure 4 The edge of the air inlet of the external circulation damper 12 is provided with a folded edge 123, and multiple reinforcing grooves 1231 are spaced apart on the folded edge 123, which are distributed in a grid pattern.
[0050] The air inlet edge of the external circulation damper 12 is provided with a folded edge 123 to fit the front external circulation air collection device; multiple reinforcing grooves 1231 are opened at intervals on the folded edge 123, and the reinforcing grooves 1231 are distributed in a grid pattern to distribute the load of the fitted front device on the folded edge 123, increase the strength of the folded edge 123, and avoid deformation or damage to the folded edge.
[0051] Optionally, the folded edge 123 is covered with sponge; the air inlet of the external circulation damper 11 is provided with a second grid structure.
[0052] First, fold the edge 123 to fit the sponge ( Figure 1 , Figure 3 , Figure 4 (None are shown), and then the sponge is attached to the front external circulation air collection device. The sponge absorbs the vibrations occurring at the edge 123 and further reduces the gap between the folded edge 123 and the front external circulation air collection device, enhancing the fit between the two and preventing air leakage. At the same time, to prevent debris from entering the air conditioning unit through the external circulation damper 11 and to prevent deformation of the air inlet of the external circulation air outlet 11, a second grid can also be set at the air inlet position of the external circulation damper 11. Figure 1 , Figure 3 , Figure 4 (None of which are shown) The structure of the second grid can be formed by multiple parallel and spaced straight grid bars and multiple parallel and spaced arc grid bars intersecting perpendicularly. It should be noted that the setting of the second grid should not affect the fit between the folded edge 123 and the front external air collection device.
[0053] Optional, refer to Figure 1 A second reinforcing rib 211 is provided along the inner wall edge of the air inlet of the compensating damper 21; a spare mounting hole 212 is provided at the relative position of the air inlet of the compensating damper 21, and the spare mounting hole 212 is used to install a spare baffle.
[0054] A second reinforcing rib 211 is provided along the inner wall of the air inlet of the compensating damper 21. The second reinforcing rib 211 is close to the edge of the air inlet of the compensating damper 21, which disperses the load on the edge of the air inlet of the compensating damper 21, making it less likely for the air inlet of the compensating damper 21 to deform inward, and avoiding the impact of the change in the shape of the air inlet of the compensating damper 21 on the internal circulation. In addition, this embodiment of the present invention also provides a spare mounting hole 212 at the relative position of the air inlet of the compensating damper 21. When it is necessary to completely close the internal circulation or control the air intake of the compensating damper during external circulation debugging, a spare partition can be installed on the spare mounting hole 212 to completely or partially block the air inlet of the compensating damper 21 as needed, and adjust the flow rate and volume of the internal circulation air entering the air conditioning unit from the compensating damper 21.
[0055] Optionally, the exhaust vent can be connected to a blower.
[0056] The mixed internal and external circulating gases need to be fed into subsequent internal or external circulation as needed. Therefore, the exhaust port is connected to the blower's inlet, and the blower sends the mixed gas into the required circulation. It is worth noting that the shape and area of the exhaust port described in this invention can be equivalent to the cross-sectional shape and area of the cavity structure of the mixing housing. (Refer to...) Figure 1 The air conditioning unit is connected to subsequent equipment via the connecting mechanism 22 on the mixing housing 20.
[0057] This utility model embodiment also provides a vehicle including the air conditioning unit described in any of the foregoing embodiments.
[0058] In this embodiment, the vehicle includes, but is not limited to, fuel vehicles, pure electric vehicles, and hybrid vehicles. The vehicle includes an air conditioning unit as described in any of the preceding embodiments. The air conditioning unit can achieve a mixed air circulation effect between the internal and external circulation, injecting fresh air into the internal circulation to improve the riding comfort of passengers and the driving experience of the driver. It also uses the waste heat of the internal circulation to heat the external circulation air, reducing the vehicle's energy consumption and achieving energy saving. In addition, the interconnected cavity structure inside the air conditioning unit does not require additional partition components, which facilitates processing and manufacturing and reduces production costs.
[0059] This utility model discloses an air conditioning unit with an internal circulation damper and an external circulation damper on the air inlet housing to introduce internal and external circulating air, respectively. A normally open compensating damper is also provided on the air inlet housing to continuously supply internal circulating air to the unit. The external and internal circulating air mix within a mixing housing connected to the air inlet housing, achieving a mixing effect. The compensating damper continuously supplies the unit with warmer internal circulating air, utilizing the waste heat of the internal circulating air to heat the mixed gas, reducing subsequent heating consumption and achieving energy-saving effects. Furthermore, the opening and closing of the internal and external circulation dampers is achieved by rotation. The baffle design enables controllable adjustment of the proportion of air entering the air conditioning unit; staggered compensation dampers and external circulation dampers prevent air leakage; grids are installed on the outside of the internal and external circulation dampers to block debris and prevent deformation; reinforcing ribs and grooves are provided to distribute the load in corresponding parts and increase the strength of corresponding positions; compared with the dual-layer flow mixed air HVAC in related technologies, the air inlet shell and the air mixing shell in this utility model are connected as one piece, eliminating the need for separate air conditioning unit chambers for internal and external circulation air, and eliminating the requirement for a double impeller for the blower, which facilitates processing and manufacturing and reduces production costs.
[0060] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.
[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An air conditioning unit, characterized in that, The air conditioning unit includes an air inlet shell and an air mixing shell, which are both interconnected cavity structures. The air inlet shell and the air mixing shell are connected to each other. The air conditioning unit has multiple air dampers, which are connected to the cavity structures. The air mixing shell has an exhaust port. The damper includes an internal circulation damper, an external circulation damper, and a compensation damper; the internal circulation damper is located at the top of the air inlet housing, and the external circulation damper is located on the side of the air inlet housing; the compensation damper is located at the top of the air mixing housing, and the compensation damper is normally open. Internal circulating air enters the mixing housing through the internal circulating damper and the air inlet housing. The internal circulating air also enters the mixing housing through the compensation damper. External circulating air enters the mixing housing through the external circulating damper and the air inlet housing. The internal circulating air and the external circulating air are mixed in the mixing housing and discharged through the exhaust port.
2. The air conditioning unit according to claim 1, characterized in that, The internal circulation damper is provided with a first rotating shaft and a first baffle. The first baffle rotates around the first rotating shaft, so that the internal circulation damper has two states: open and closed. The external circulation damper is provided with a second rotating shaft and a second baffle. The second baffle rotates around the second rotating shaft, so that the external circulation damper has two states: open and closed.
3. The air conditioning unit according to claim 1, characterized in that, The compensation damper and the external circulation damper are staggered.
4. The air conditioning unit according to claim 1, characterized in that, The outer side of the internal circulation damper is provided with a first grid structure, which is composed of multiple parallel and spaced straight grid bars and multiple parallel and spaced arc grid bars intersecting perpendicularly.
5. The air conditioning unit according to claim 1, characterized in that, Both the air inlet housing and the air mixing housing have a first reinforcing rib on their outer walls. The first reinforcing rib is composed of multiple parallel and spaced longitudinal ribs and multiple parallel and spaced transverse ribs that intersect perpendicularly.
6. The air conditioning unit according to claim 1, characterized in that, The edge of the air inlet of the external circulation damper is provided with an outward folded edge, and multiple reinforcing grooves are spaced apart on the folded edge, the reinforcing grooves being distributed in a grid pattern.
7. The air conditioning unit according to claim 6, characterized in that, The folded edge is covered with sponge; the air inlet of the external circulation damper is provided with a second grid structure.
8. The air conditioning unit according to claim 1, characterized in that, A second reinforcing rib is provided along the inner wall edge of the air inlet of the compensating damper; a spare mounting hole is provided at the opposite position of the air inlet of the compensating damper, and the spare mounting hole is used to install a spare baffle.
9. The air conditioning unit according to claim 1, characterized in that, The exhaust vent is connected to a blower.
10. A vehicle, characterized in that, Includes the air conditioning unit as described in any one of claims 1 to 9.