Double-layer flow air inlet vehicle-mounted air conditioner

Abstract

The invention discloses a double-layer-flow air inlet vehicle-mounted air conditioner in the technical field of automobile air conditioners. The double-layer-flow air inlet vehicle-mounted air conditioner comprises a double-channel air inlet assembly, an air blowing assembly and an air conditioner body which communicate in sequence. The air conditioner body comprises a shell, an air outlet formed in the shell, an evaporator and a heater, the evaporator and the heater are arranged in the shell, a front air inlet cavity and a rear air inlet cavity which are located on the downstream of the evaporator are formed in the shell, and an air door assembly is arranged in the shell; the front air inlet cavity and the rear air inlet cavity each comprise a first cavity and a second cavity, the heater is provided with an air guide part, hot air and cold air blown to the defrosting area are separated through the arranged air guide parts, it is guaranteed that the temperature of the hot air cannot be lowered, the defrosting speed under the low-temperature working condition is guaranteed, energy consumption is reduced, and the defrosting efficiency is improved. And the cold air is mixed with the hot air after being divided by the division blocks in the air guide piece in proportion, so that the mixed air temperature is consistent, the temperatures of the left side and the right side of the front row are consistent, and the driving comfort is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive air conditioners, and specifically to a vehicle-mounted air conditioner with double-layer air inlet. Background Art

[0002] With the development of the automotive industry and the improvement of people's requirements for driving comfort, the vehicle-mounted air conditioning system, as a key component to improve the in-vehicle environmental quality, has become increasingly important. However, there are still some deficiencies in the actual application of traditional vehicle-mounted air conditioning systems. In particular, it is difficult for existing vehicle-mounted air conditioning systems to achieve precise control and uniform distribution of the in-vehicle temperature. Most of them adopt single temperature zone or simple zoning control, making it difficult to achieve independent and precise adjustment of multiple areas in the vehicle, resulting in frequent local overcooling or overheating phenomena, affecting comfort. Moreover, hot air and cold air are easily mixed, leading to a decrease in the defrosting temperature and a decline in the defrosting efficiency under low-temperature conditions, increasing energy consumption. Summary of the Invention

[0003] The purpose of the present invention is to provide a vehicle-mounted air conditioner with double-layer air inlet to solve the problem that existing vehicle-mounted air conditioning systems are difficult to achieve precise control and uniform distribution of the in-vehicle temperature as mentioned in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A vehicle-mounted air conditioner with double-layer air inlet, comprising: a double-channel air inlet component, a blower component, and an air conditioner main body that are connected in sequence;

[0005] The air conditioner main body includes a housing, an air outlet provided on the housing, and an evaporator and a heater provided inside the housing. An upstream air intake cavity and a downstream air intake cavity are provided inside the housing, and a damper assembly for adjusting the opening sizes of the upstream air intake cavity and the downstream air intake cavity is provided inside the housing;

[0006] Both the upstream air intake cavity and the downstream air intake cavity include a first cavity and a second cavity, and the heater is used to heat the gas discharged from the second cavity;

[0007] A wind guiding member is provided on the heater. The wind guiding member is used to mix the cold air discharged from the upstream air intake cavity and a part of the hot air generated by the heater processing the cold air in the upstream air intake cavity in proportion. The wind guiding member is also used to separate the remaining hot air generated by the heater processing the cold air in the upstream air intake cavity from the cold air discharged from the upstream air intake cavity and introduce it into the defrosting area.

[0008] Preferably, the air outlet includes a defrosting air outlet, side blowing surface air outlets, middle blowing surface air outlets, front blowing foot air outlets, rear blowing foot air outlets, and rear blowing surface air outlets. Dampers and driving devices for driving the dampers to rotate are provided inside the defrosting air outlet, side blowing surface air outlets, middle blowing surface air outlets, front blowing foot air outlets, rear blowing foot air outlets, and rear blowing surface air outlets.

[0009] Preferably, the air damper assembly includes a thin air damper slidably disposed within the housing and a driving member for driving the thin air damper to move.

[0010] Preferably, the air guiding member includes a mounting housing, a hot air inlet, a cold air inlet, and an exhaust port provided on the mounting housing. A dividing block is provided within the cold air inlet, and two guiding plates are provided on the dividing block. The two guiding plates are used for dividing the hot air inlet and the cold air inlet.

[0011] Preferably, the mounting housing is snap-fitted onto the heater.

[0012] Preferably, the dual-channel air intake assembly includes a first housing, an inner circulation air inlet and an outer circulation air inlet respectively provided on both sides of the first housing, and a filter element provided within the first housing;

[0013] Wherein, a liquid baffle is provided at the bottom of the inner cavity of the outer circulation air inlet.

[0014] Preferably, the air blowing assembly includes a second housing, an impeller assembly provided within the second housing, and two partition plates provided within the second housing. The two partition plates are used for dividing the inner cavity of the second housing into three cavities distributed from top to bottom. An air flow channel for communicating with the cavity is provided on the side wall of the second housing;

[0015] Wherein, the second housing is installed at the bottom of the first housing.

[0016] Preferably, the end of the air flow channel away from the second housing is inclined downward.

[0017] Preferably, the end of the air flow channel communicates with the housing, and a plurality of drain holes are provided at the bottom of the housing. The drain holes are communicated with a drain pipe.

[0018] Preferably, a baffle is provided at the bottom of the inner cavity of the housing, and the cross-section of the baffle is concave.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: The hot air blown towards the defrosting area is separated from the cold air by the provided air guiding member, ensuring that the temperature of the hot air does not drop, ensuring the defrosting rate under low-temperature conditions, reducing energy consumption, and the dividing block in the air guiding member divides the cold air proportionally and mixes it with the hot air, making the temperature of the mixed gas consistent, ensuring the same temperature on the left and right sides in the front row, and improving the riding comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the vehicle-mounted air conditioner of the present invention;

[0021] Figure 2 is a schematic connection structure diagram of the dual-channel air intake assembly and the air blowing assembly of the present invention;

[0022] Figure 3 Schematic cross-sectional structure diagram of the outer shell of the present invention;

[0023] Figure 4 Schematic connection structure diagram of the outer shell and the air damper assembly of the present invention;

[0024] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at location A in the present invention;

[0025] Figure 6 Schematic connection structure diagram of the heater and the air guiding member of the present invention;

[0026] Figure 7 Schematic structure diagram of the air guiding member of the present invention;

[0027] Figure 8 Schematic connection structure diagram of the partition block and the guiding plate of the present invention;

[0028] Figure 9 Schematic cross-sectional view of the connection between the first outer shell and the second housing of the present invention;

[0029] Figure 10 Schematic connection structure diagram of the second housing and the air flow channel of the present invention.

[0030] In the figure: 1. Dual-channel air intake assembly; 101. First housing; 102. Inner circulation air intake; 103. Outer circulation air intake; 104. Filter element; 105. Liquid baffle; 2. Blower assembly; 201. Second housing; 202. Impeller assembly; 203. Partition board; 204. Air flow channel; 3. Outer shell; 301. Defrosting air outlet; 302. Side blowing surface air outlet; 303. Middle blowing surface air outlet; 304. Front blowing foot air outlet; 305. Rear blowing foot air outlet; 306. Rear blowing surface air outlet; 4. Drain pipe; 5. Evaporator; 6. Heater; 7. Baffle; 8. Drain hole; 9. Front air intake cavity; 10. Rear air intake cavity; 1001. First cavity; 1002. Second cavity; 11. Thin air damper; 12. Driving member; 13. Air guiding member; 131. Installation housing; 132. Hot air inlet; 133. Cold air inlet; 134. Exhaust port; 135. Partition block; 136. Guiding plate; 14. Air damper. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1

[0033] Please refer to Figure 1 and Figure 2 , a vehicle-mounted air conditioner with double-layer inflow air intake, comprising: a dual-channel air intake assembly 1, a blower assembly 2 and an air conditioner main body. The dual-channel air intake assembly 1 is located above the blower assembly 2, and the air conditioner main body is located on the side of the dual-channel air intake assembly 1 and the blower assembly 2.

[0034] Please refer to Figure 1 , Figure 2 and Figure 9 , the dual-channel air intake assembly 1 includes a first housing 101, an inner circulation air inlet 102, an outer circulation air inlet 103 respectively arranged on both sides of the first housing 101, and a filter element 104 arranged in the inner cavity of the first housing 101. The filter element 104 is used to filter the air passing through the inner circulation air inlet 102 and the outer circulation air inlet 103, and the filter element 104 can also remove part of the moisture contained in the air;

[0035] It should be noted that a liquid baffle 105 is arranged at the bottom of the inner cavity of the outer circulation air inlet 103, and the liquid baffle 105 is in a stepped shape; during the process of outer circulation air intake, the liquid baffle 105 can block the moisture contained in the air, such as rainwater, and reduce the moisture contained in the air entering the air conditioner; a valve and a motor for driving the valve to rotate are installed inside the first housing 101, and by controlling the rotation of the valve, the opening and closing of the inner circulation air inlet 102 and the outer circulation air inlet 103 are changed.

[0036] Please refer to Figure 1 , Figure 2 , Figure 9 and Figure 10 , the blower assembly 2 includes a second housing 201, an impeller assembly 202 (the impeller assembly 202 includes an impeller and a driving motor for driving the impeller to rotate) and two partition plates 203; the second housing 201 is installed at the bottom of the first housing 101, the impeller assembly 202 is installed at the bottom of the inner cavity of the second housing 201, the two partition plates 203 are installed in the inner cavity of the second housing 201 from top to bottom in sequence, openings are formed in the centers of the two partition plates 203 for the impeller assembly 202 to pass through the two partition plates 203, and the two partition plates 203 are used to divide the inner cavity of the second housing 201 into three cavities from top to bottom in sequence. An air flow channel 204 is arranged on the side wall of the second housing 201, and there are two layers of the air flow channel 204, and the two air flow channels 204 are respectively communicated with the middle and upper cavities; a water outlet hole is formed inside the lowermost cavity, and the water outlet hole is communicated with the lower air flow channel 204.

[0037] It should be noted that when there is more moisture in the air and water droplets enter the interior of the second housing 201, due to the centrifugal force generated by the rotation of the impeller assembly 202, part of the water will be thrown above the two partitions 203 and flow into the interior of the air flow channel 204, and the water at the bottom of the inner cavity of the second housing 201 will also enter the interior of the air flow channel 204 through the water outlet holes.

[0038] Please refer to Figure 1 、 Figure 2 and Figure 6 , the air conditioner main body includes a housing 3, an air outlet provided on the housing 3, and an evaporator 5 and a heater 6 provided inside the housing 3; the air outlet includes a defrost air outlet 301, a side blowing surface air outlet 302, a middle blowing surface air outlet 303, a front blowing foot air outlet 304, a rear blowing foot air outlet 305 and a rear blowing surface air outlet 306. Dampers 14 are rotatably provided inside the defrost air outlet 301, the side blowing surface air outlet 302, the middle blowing surface air outlet 303, the front blowing foot air outlet 304, the rear blowing foot air outlet 305 and the rear blowing surface air outlet 306. A driving device, such as a motor, is installed on the housing 3. The number of motors is the same as and corresponds one-to-one to the number of dampers 14, and is used to drive the dampers 14 to rotate to control the opening and closing or the opening size of the air outlet. Moreover, each damper 14 is controlled by a driving device, so that each air outlet works independently without mutual influence; the housing 3 is communicated with the end of the air flow channel 204, and a plurality of drain holes 8 are opened at the bottom of the housing 3 (for the rib plates provided at the bottom of the housing 3, the plurality of drain holes 8 are distributed on both sides of the rib plates to prevent the water accumulated at the bottom of the inner cavity of the housing 3 from being unable to drain due to the blockage of the rib plates), and a drain pipe 4 is installed on the housing 3, and the drain pipe 4 is communicated with the drain holes 8.

[0039] Please refer to Figure 4 and Figure 5 , a front air intake cavity 9 and a rear air intake cavity 10 are provided in the inner cavity of the housing 3. The front air intake cavity 9 corresponds to the air outlets in the front row of the vehicle, and the rear air intake cavity 10 corresponds to the air outlets in the rear row of the vehicle. The front air intake cavity 9 and the rear air intake cavity 10 are both composed of a first cavity 1001 and a second cavity 1002. The front air intake cavity 9 and the rear air intake cavity 10 are located downstream of the evaporator 5. The air processed by the evaporator 5 enters the front air intake cavity 9 and the rear air intake cavity 10. The heater 6 is located at the rear side of the second cavity 1002 and is used to heat the gas discharged from the second cavity 1002; as Figure 4 shown, the two upper air intake cavities and the two outer lower air intake cavities are both front air intake cavities 9. The air passing through the lower front air intake cavity 9 will be redirected into the inner cavity of the upper front air intake cavity 9 through the guidance of the deflector inside the housing 3. The two middle lower air intake cavities are rear air intake cavities 10;

[0040] Among them, it should be noted that the first cavity 1001 of the lower air inlet cavity is located below the second cavity 1002, and the first cavity 1001 of the upper air inlet cavity is located above the second cavity 1002;

[0041] Please refer to Figure 4 and Figure 5 , a damper assembly is provided inside the housing 3, and the number of damper assemblies is the same as that of the front air inlet cavity 9 and the rear air inlet cavity 10; the damper assembly includes a thin damper 11 and a driving member 12. The thin damper 11 is slidably installed in the inner cavity of the housing 3. The driving member 12 includes a motor, a rotating shaft provided on the output shaft of the motor, and a gear provided on the rotating shaft. A rack is installed on the surface of the thin damper 11, and the rack meshes with the gear. When the motor drives the rotating shaft and the gear to rotate, the thin damper 11 will slide inside the housing 3 to adjust the opening sizes of the front air inlet cavity 9 and the rear air inlet cavity 10;

[0042] Please refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 , a wind guiding member 13 is provided on the top of the heater 6. The wind guiding member 13 includes an installation housing 131, a hot air inlet 132, a cold air inlet 133, an exhaust port 134, a dividing block 135, and a guiding plate 136; the installation housing 131 includes an arc-shaped plate and two side baffles symmetrically installed on the side walls of the arc-shaped plate. A cross plate is installed on the side walls of the two side baffles. A flow channel is formed between the two side baffles. The lower opening of the flow channel is the hot air inlet 132, and the upper opening of the flow channel is the exhaust port 134. An opening is formed on the side wall of the cross plate, and this opening is the cold air inlet 133. The cold air inlet 133 is communicated with the flow channel. The cold air inlet 133 corresponds to the first cavity 1001 of the front air inlet cavity 9 above. The hot air inlet 132 is located behind the heater 6 and is used to receive the air processed by the heater 6 from the second cavity 1002 of the front air inlet cavity 9 above. The dividing block 135 is installed in the middle of the inner cavity of the cold air inlet 133, dividing the cold air inlet 133 into two parts. Two guiding plates 136 are installed on the side of the dividing block 135 facing the arc-shaped plate, dividing the flow channel into three parts. Due to the blockage of the dividing block 135, the air passing through the first cavity 1001 cannot enter the middle area of the flow channel; a part of the cold air in the front air inlet cavity 9 enters the inside of the cold air inlet 133 through the first cavity 1001 and is divided by the dividing block 135 and then enters the left and right flow channels respectively. The remaining cold air in the front air inlet cavity 9 enters the core of the heater 6 through the second cavity 1002, is heated, and then passes through the hot air inlet 132 and is divided into three parts by the two guiding plates 136 and enters the three flow channels respectively. The hot air and cold air in the left and right flow channels are mixed and blown towards the two front driver seats, while the hot air in the middle flow channel enters the defrosting area alone for defrosting (when the defrosting mode is turned on).

[0043] It should be noted that since the temperature on the side of the core of the heater 6 close to the water inlet area is higher than that on the side far from the water inlet area, after the air is heated by passing through the core of the heater 6, the temperatures on the left and right sides of the air are inconsistent. Because the position of the partition block 135 determines the amount of cold air entering the left and right flow channels, therefore, by setting the partition block 135, more cold air can enter the side with a higher temperature, and less cold air can enter the side with a lower temperature, so that the temperatures of the cold air and hot air on both sides after mixing are the same, thus ensuring that there is no temperature difference on both sides of the front row.

[0044] Working principle: The impeller assembly 202 works to make the air enter the inner cavity of the first housing 101 through the inner circulation air inlet 102 or the outer circulation air inlet 103. After being filtered by the filter element 104, the air enters the inner cavity of the second housing 201 and enters the interior of the outer housing 3 through the air flow channel 204. The evaporator 5 works to cool the entering air. The cooled air enters the front air inlet chamber 9 and the rear air inlet chamber 10. Part of the cold air passes through the first cavity 1001, and the remaining part of the cold air passes through the second cavity 1002 and is heated by the heater 6 to become hot air. The two are discharged to various places through the air outlet; the above situation is when both the first cavity 1001 and the second cavity 1002 are open. If the driving member 12 controls the thin plate air damper 11 to close the first cavity 1001, the air only enters the interior of the second cavity 1002. If the driving member 12 controls the thin plate air damper 11 to close the second cavity 1002, the air only enters the interior of the first cavity 1001. The movement of the thin plate air damper 11 is used to control the ratio of cold and hot air generated.

[0045] In this embodiment, as a further optimized solution, please refer to Figure 6 、 Figure 7 and Figure 8 , the mounting housing 131 is clamped on the top wall of the core of the heater 6, facilitating the installation of the air guiding member 13.

[0046] In this embodiment, as a further optimized solution, please refer to Figure 10 , the end of the air flow channel 204 far from the second housing 201 is inclined downward, facilitating the accumulated water inside the second housing 201 to flow into the interior of the outer housing 3 through the air flow channel 204, and facilitating the discharge of the water inside the blower assembly 2.

[0047] In this embodiment, as a further optimized solution, please refer to Figure 3 , a baffle 7 is provided at the bottom of the inner cavity of the outer housing 3. The cross-section of the baffle 7 is concave. The baffle 7 is used to block the accumulated water inside the outer housing 3 from flowing towards the air outlet, preventing the water inside the outer housing 3 from being discharged into the vehicle through the air outlet when the vehicle tilts during uphill and downhill.

[0048] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted air conditioner with double-layer inflow air, characterized in that: Comprising: A double-channel air inlet assembly (1), a blower assembly (2), and an air conditioner main body that are connected in sequence; The air conditioner main body includes a housing (3), an air outlet provided on the housing (3), and an evaporator (5) and a heater (6) provided inside the housing (3). An upstream air inlet chamber (9) and a downstream air inlet chamber (10) are provided inside the housing (3) downstream of the evaporator (5). A damper assembly for adjusting the opening sizes of the upstream air inlet chamber (9) and the downstream air inlet chamber (10) is provided inside the housing (3); Both the upstream air inlet chamber (9) and the downstream air inlet chamber (10) include a first chamber (1001) and a second chamber (1002). The heater (6) is used to heat the gas discharged from the second chamber (1002); A wind guiding member (13) is provided on the heater (6). The wind guiding member (13) is used to mix the cold air discharged from the upstream air inlet chamber (9) and a part of the hot air generated by the heater (6) processing the cold air in the upstream air inlet chamber (9) in proportion. The wind guiding member (13) is also used to separate the remaining hot air generated by the heater (6) processing the cold air in the upstream air inlet chamber (9) from the cold air discharged from the upstream air inlet chamber (9) and introduce it into the defrosting area.

2. The on-vehicle air conditioner with double-layer incoming air flow according to claim 1, wherein: The air outlet includes a defrosting air outlet (301), a side blowing air outlet (302), a middle blowing air outlet (303), a front foot blowing air outlet (304), a rear foot blowing air outlet (305), and a rear blowing air outlet (306). Dampers (14) and driving devices for driving the dampers (14) to rotate are provided in each of the defrosting air outlet (301), the side blowing air outlet (302), the middle blowing air outlet (303), the front foot blowing air outlet (304), the rear foot blowing air outlet (305), and the rear blowing air outlet (306).

3. The on-vehicle air conditioner with double-layer inflow air according to claim 1, characterized in that: The damper assembly includes a thin plate damper (11) slidably provided inside the housing (3) and a driving member (12) for driving the thin plate damper (11) to move.

4. The on-vehicle air conditioner with double-layer inflow air according to claim 1, characterized in that: The wind guiding member (13) includes a mounting housing (131), a hot air inlet (132), a cold air inlet (133), and an exhaust port (134) provided on the mounting housing (131). A dividing block (135) is provided inside the cold air inlet (133). Two guiding plates (136) are provided on the dividing block (135). The two guiding plates (136) are used to divide the hot air inlet (132) and the cold air inlet (133).

5. The on-vehicle air conditioner with double-layer incoming air flow according to claim 4, characterized in that: The mounting housing (131) is snap-fitted on the heater (6).

6. The on-vehicle air conditioner with double-layer inflow air according to claim 1, wherein: The double-channel air inlet assembly (1) includes a first housing (101), an internal circulation air inlet (102) and an external circulation air inlet (103) respectively provided on both sides of the first housing (101), and a filter element (104) provided inside the first housing (101); Wherein, a liquid blocking plate (105) is provided at the bottom of the inner cavity of the external circulation air inlet (103).

7. The on-vehicle air conditioner with double-layer incoming air flow according to claim 6, characterized in that: The air blowing assembly (2) includes a second housing (201), an impeller assembly (202) disposed within the second housing (201), and two partition plates (203) disposed within the second housing (201). The two partition plates (203) are configured to divide the inner cavity of the second housing (201) into three cavities distributed from top to bottom. An air flow channel (204) for communicating with the cavities is provided on the side wall of the second housing (201). Among them, the second housing (201) is installed at the bottom of the first housing (101).

8. The on-vehicle air conditioner with double-layer inflow air according to claim 7, characterized in that: One end of the air flow channel (204) away from the second housing (201) is inclined downwardly.

9. The on-vehicle air conditioner with double-layer incoming air flow according to claim 7, characterized in that: The end of the air flow channel (204) communicates with the outer housing (3). A plurality of drain holes (8) are provided at the bottom of the outer housing (3), and the drain holes (8) are communicated with a drain pipe (4).

10. The on-vehicle air conditioner with double-layer incoming air flow according to claim 1, characterized in that: A baffle (7) is provided at the bottom of the inner cavity of the outer housing (3), and the cross section of the baffle (7) is concave.

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