WV flow micro-channel evaporator
The evaporator designed with the WV process allows the fluid to circulate multiple times between the upper and lower manifolds, solving the problems of large temperature difference and process complexity in the evaporator. This results in more efficient heat exchange and temperature uniformity, improving the comfort of passenger vehicles and simplifying the process design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-03-03
AI Technical Summary
The existing evaporator flow arrangement results in a large temperature difference on the evaporator surface, which makes it difficult to meet the comfort requirements of passenger vehicles. The traditional double D-tube design is complex and difficult to implement other forms of flow design.
The WV flow design is adopted, which sets the upper and lower manifolds as multiple zones. The fluid runs back and forth between the upper and lower manifolds, and through multiple circulations, the heat exchange efficiency is improved and the temperature difference is reduced.
It improves the temperature uniformity of the evaporator and the overall vehicle comfort, simplifies the process design, and reduces manufacturing costs and overall vehicle energy consumption.
Smart Images
Figure CN223965645U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of evaporators, and more specifically, to a WV process microchannel evaporator. Background Technique
[0002] As one of the core components of an air-conditioning system, an evaporator is mainly used to convert liquid refrigerant into gaseous refrigerant, thereby absorbing heat from the surrounding environment to achieve the effect of refrigeration or heating; due to the characteristics of high heat transfer efficiency, small volume, less refrigerant charge, and low cost of a microchannel evaporator, it has been widely used in the passenger vehicle market and occupies a dominant position in the automotive air-conditioning market.
[0003] However, the main flow of the existing evaporator is arranged in a shape like the Chinese character 'ji', flowing through the microchannel flat tubes in sequence. Theoretically, the temperature of the evaporator gradually increases from the inlet to the outlet. This traditional flow leads to a large temperature difference on the surface of the evaporator; furthermore, it results in poor temperature uniformity of the air passing through the surface of the evaporator, making it difficult to meet the increasingly high comfort requirements of passenger vehicles (such as a lower temperature difference at the automotive air-conditioning outlet and precise temperature control in each area of the vehicle interior). Summary of the Utility Model
[0004] The purpose of the present utility model includes, for example, providing a WV process microchannel evaporator, which can adopt a new flow design. By setting the upper and lower header pipes as multi-regions, it provides for the fluid to run back and forth between the upper and lower header pipes, improving the heat transfer efficiency of the evaporator, reducing the temperature difference on the surface of the evaporator, improving the temperature uniformity of the evaporator, and enhancing the comfort of the whole vehicle.
[0005] The embodiments of the present utility model can be implemented as follows:
[0006] In a first aspect, the present utility model provides a WV process microchannel evaporator, including:
[0007] An upper header pipe, a lower header pipe, an inlet pipe, and an outlet pipe;
[0008] The upper header pipe is located above the lower header pipe; the inlet pipe is arranged on the upper header pipe, and the outlet pipe is arranged on the lower header pipe;
[0009] Both the upper header pipe and the lower header pipe include a first channel and a second channel; all regions of the first channel of the upper header pipe are connected to all regions of the first channel of the lower header pipe through a first flat tube assembly; all regions of the second channel of the upper header pipe are connected to all regions of the second channel of the lower header pipe through a second flat tube assembly;
[0010] In the upper header pipe, the firstchannel includes a first region, a second region, and a third region that are separated from each other, and the second channel includes a left upper outer region and a right upper outer region that are separated from each other;
[0011] In the lower manifold, the first channel includes a lower left inner region and a lower right inner region that are separated from each other, and the second channel includes a lower outer region;
[0012] When fluid flows from the inlet pipe to the first region, the fluid flows downward from the first region through the first flat tube assembly to the lower left inner region and the lower right inner region respectively; wherein the fluid in the lower left inner region flows upward through the first flat tube assembly to the second region, then flows through a partial flow channel to the upper left outer region, then flows downward through the second flat tube assembly to the lower outer region; and finally exits from the lower outer region; wherein the fluid in the lower right inner region flows upward through the first flat tube assembly to the third region, then flows through other flow channels to the upper right outer region, then flows downward through the second flat tube assembly to the lower outer region, and finally exits from the lower outer region through the outlet pipe;
[0013] Alternatively, when fluid is diverted from the inlet pipe to the second region and the third region; a portion of the fluid flows downward from the second region through the first flat tube assembly to the lower left inner region, then upward through the first flat tube assembly to the first region, then through some flow channels to the upper left outer region, then downward through the second flat tube assembly to the lower outer region, and finally discharged from the lower outer region; another portion of the fluid flows downward from the third region through the first flat tube assembly to the lower right inner region, then upward through the first flat tube assembly to the first region, then through other flow channels to the upper right outer region, then downward through the second flat tube assembly to the lower outer region, and finally discharged from the lower outer region through the outlet pipe.
[0014] In an optional embodiment, the first flat tube assembly and the second flat tube assembly are arranged in parallel.
[0015] In an optional implementation, along the width direction of the WV process microchannel evaporator, the first channel of the upper manifold and the first channel of the lower manifold are both located at one end, and the second channel of the upper manifold and the second channel of the lower manifold are both located at the other end.
[0016] In an optional implementation, the inlet pipe and the outlet pipe are located on the same side along the length of the WV process microchannel evaporator.
[0017] In an optional embodiment, a partition is further included; the partition is hermetically disposed in the longitudinal section direction of the first channel to divide the first channel into multiple regions; and / or the partition is hermetically disposed in the longitudinal section direction of the second channel to divide the second channel into multiple regions.
[0018] In the upper manifold, two partitions are sealed in the first channel to form the first region, the second region and the third region, and one partition is sealed in the second channel to form the upper left outer region and the upper right outer region;
[0019] In the lower manifold, the first channel is provided with a partition in a sealed manner to form the lower left inner region and the lower right inner region.
[0020] In an optional embodiment, the outlet pipe is disposed in the second channel of the lower manifold so that fluid is discharged from one side of the lower outer region;
[0021] Alternatively, a baffle may be provided in the second channel of the lower manifold to divide the lower outer region into a sealed left row region and a right row region; the left row region and the right row region are respectively connected to the outlet pipe.
[0022] In an optional embodiment, the first region is further provided with an intermediate partition to divide the first region into a first fluid space and a second fluid space that are sealed to each other.
[0023] The intermediate partition is configured to allow the first fluid space to communicate with the upper left outer region through some flow channels, and to allow the second fluid space to communicate with the upper right outer region through other flow channels.
[0024] In an optional embodiment, in the upper manifold and / or the lower manifold, the first channel and the second channel are separated by a flow plate; the flow groove is disposed on the flow plate.
[0025] In an optional embodiment, both the upper manifold and the lower manifold include a groove, a cover plate, a plug, a flow plate, and a protruding plate.
[0026] The cover plate is sealed on the top opening of the trough; along the length of the trough, the plugs are respectively sealed at both ends of the trough; and the trough, the cover plate, and the plugs enclose a sealed flow collection space.
[0027] The protruding plate is disposed on the bottom wall of the tank, and the top plate of the protruding plate is sealed to the cover plate through the flow plate, and the flow plate extends along the length of the tank to the end caps.
[0028] Along the width direction of the groove, the groove has a first end and a second end opposite to each other;
[0029] The inner wall of the first end of the trough, the inner wall of the flow plate near the first end, the top wall of the convex plate near the first end, and the bottom of the cover plate together form a sealed first channel.
[0030] The inner wall of the second end of the trough, the inner wall of the flow plate near the second end, the top wall of the convex plate near the second end, and the bottom of the cover plate together form a sealed second channel.
[0031] The bottom wall of the convex plate and the bottom wall of the groove together form a sealed third channel.
[0032] In an optional embodiment, the inlet pipe is disposed on the third channel of the upper manifold, and the protruding plate is provided with a through hole to connect the third channel and the first channel;
[0033] When the through hole is directly facing the first region, the fluid is allowed to flow from the inlet pipe into the first region;
[0034] When the through hole is directly opposite the second region and the third region, the fluid flows from the inlet pipe to the second region and the third region, respectively.
[0035] The beneficial effects of this utility model embodiment include, for example:
[0036] The WV process microchannel evaporator of this scheme includes an upper manifold, a lower manifold, an inlet pipe, and an outlet pipe. In the upper manifold, the first channel includes a first region, a second region, and a third region that are separated from each other, and the second channel includes a left upper outer region and a right upper outer region that are separated from each other. In the lower manifold, the first channel includes a left lower inner region and a right lower inner region that are separated from each other, and the second channel includes a lower outer region. During operation, the second region can connect with the upper left outer region through a partial flow channel, and the third region can connect with the upper right outer region through other flow channels. This creates fluid paths from the inlet pipe, through the first region, the lower left inner region, the second region, the upper left outer region, the lower outer region, and the outlet pipe; or the first region can connect with the upper left outer region through a partial flow channel, and the first region can connect with the upper right outer region through other flow channels. This again creates fluid paths from the inlet pipe, through the second region, the lower left inner region, the first region, the upper left outer region, the lower outer region, and the outlet pipe; or the second region can connect with the third region, the lower right inner region, the first region, the upper right outer region, the lower outer region, and the outlet pipe. This allows the fluid to circulate multiple times between the upper and lower manifolds, thereby improving the evaporator's heat exchange efficiency, reducing the evaporator surface temperature difference, improving evaporator temperature uniformity, and enhancing overall vehicle comfort. Attached Figure Description
[0037] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0038] Figure 1 This is a schematic diagram of the structure of the WV process microchannel evaporator according to Embodiment 1 of this utility model;
[0039] Figure 2 This is a partial cross-sectional view of the WV process microchannel evaporator according to Embodiment 1 of this utility model;
[0040] Figure 3 This is a partial cross-sectional view from another perspective of the WV process microchannel evaporator of Embodiment 1 of this utility model.
[0041] Figure 4 This is a schematic diagram of the WV process microchannel evaporator according to Embodiment 1 of this utility model;
[0042] Figure 5 This is a schematic diagram of another embodiment of the WV process microchannel evaporator of Embodiment 1 of this utility model.
[0043] Figure 6 This is a schematic diagram of the manifold structure of the WV process microchannel evaporator according to Embodiment 1 of this utility model;
[0044] Figure 7 This is a partial schematic diagram of the manifold of the WV process microchannel evaporator according to Embodiment 1 of this utility model;
[0045] Figure 8 This is a schematic diagram of the WV process microchannel evaporator according to Embodiment 2 of this utility model;
[0046] Figure 9 This is a schematic diagram of another embodiment of the WV process microchannel evaporator of Embodiment 2 of this utility model;
[0047] Figure 10 This is a schematic diagram of the WV process microchannel evaporator according to Embodiment 3 of this utility model.
[0048] Icons: 10-WV process microchannel evaporator; 11-Upper manifold; 12-Lower manifold; 13-Inlet pipe; 14-Outlet pipe; 15-First channel; 16-Second channel; 17-Third channel; 18-First flat tube assembly; 19-Second flat tube assembly; 111-First region; 112-Second region; 113-Third region; 121-Upper left outer region; 122-Upper right outer region; 210-Lower left inner region; 220-Lower right inner region; 222-Lower outer region; 410-Tank body; 420-Cover plate; 430-Plug; 440-Flow plate; 441-Flow groove; 450-Protruding plate; 451-Through hole; 460-Baffle plate. Detailed Implementation
[0049] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0050] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0051] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0052] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0053] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0054] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.
[0055] The existing evaporators mainly have the following technical problems:
[0056] Currently, the main flow path of the evaporator is arranged in a figure-eight pattern, with the air flowing sequentially through the microchannel flat tube. Theoretically, the evaporator temperature gradually increases from the inlet to the outlet. The traditional process results in a large temperature difference on the evaporator surface, leading to poor uniformity of air temperature passing through the evaporator surface. This makes it difficult to meet the increasingly high comfort requirements of passenger cars (such as lower temperature difference at the car air conditioning outlet and precise temperature control in different areas of the car).
[0057] Traditional double D-type tubes (folded, profile manifolds) are only dual-channel in form. Designing evaporators with other process types is more difficult, the structure is more complex, and it is not conducive to manufacturing and vehicle layout.
[0058] To improve the above-mentioned technical problems, a WV process microchannel evaporator 10 is provided in the following embodiment.
[0059] Example 1
[0060] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides a WV process microchannel evaporator 10, including an upper manifold 11, a lower manifold 12, an inlet pipe 13, and an outlet pipe 14;
[0061] The upper manifold 11 is located above the lower manifold 12; the inlet pipe 13 is located in the upper manifold 11, and the outlet pipe 14 is located in the lower manifold 12.
[0062] Both the upper manifold 11 and the lower manifold 12 include a first channel 15 and a second channel 16; the entire area of the first channel 15 of the upper manifold 11 is connected to the entire area of the first channel 15 of the lower manifold 12 through the first flat tube assembly 18; the entire area of the second channel 16 of the upper manifold 11 is connected to the entire area of the second channel 16 of the lower manifold 12 through the second flat tube assembly 19.
[0063] In the upper collector tube 11, the first channel 15 includes a first region 111, a second region 112 and a third region 113 that are separated from each other, and the second channel 16 includes a left upper outer region 121 and a right upper outer region 122 that are separated from each other.
[0064] In the lower manifold 12, the first channel 15 includes a lower left inner region 210 and a lower right inner region 220 that are separated from each other, and the second channel 16 includes a lower outer region 222.
[0065] When the fluid flows from the inlet pipe 13 to the first region 111, the fluid flows downward from the first region 111 through the first flat pipe assembly 18 to the lower left inner region 210 and the lower right inner region 220 respectively; the fluid in the lower left inner region 210 flows upward through the first flat pipe assembly 18 to the second region 112, then flows through part of the flow channel 441 to the upper left outer region 121, then flows downward through the second flat pipe assembly 19 to the lower outer region 222; and finally exits from the lower outer region 222; the fluid in the lower right inner region 220 flows upward through the first flat pipe assembly 18 to the third region 113, then flows through other flow channels 441 to the upper right outer region 122, then flows downward through the second flat pipe assembly 19 to the lower outer region 222, and finally exits from the lower outer region 222 through the outlet pipe 14.
[0066] Furthermore, such as Figure 4 As shown, the WV process microchannel evaporator 10 of this scheme includes an upper manifold 11, a lower manifold 12, an inlet pipe 13, and an outlet pipe 14. In the upper manifold 11, the first channel 15 includes a first region 111, a second region 112, and a third region 113 that are separated from each other, and the second channel 16 includes a left upper outer region 121 and a right upper outer region 122 that are separated from each other; in the lower manifold 12, the first channel 15 includes a left lower inner region 210 and a right lower inner region 220 that are separated from each other, and the second channel 16 includes a lower outer region 222.
[0067] During operation, the second region 112 can be connected to the upper left outer region 121 through a partial flow channel 441, and the third region 113 can be connected to the upper right outer region 122 through other flow channels 441; thus forming a fluid path from the inlet pipe 13, the first region 111, the lower left inner region 210, the second region 112, the upper left outer region 121, the lower outer region 222, and the outlet pipe 14; and from the inlet pipe 13, the first region 111, the lower right inner region 220, the third region 113, the upper right outer region 122, the lower outer region 222, and the outlet pipe 14. This forms a single-inlet, single-outlet process.
[0068] The process of this solution adopts a WV type with a double-layer structure of the evaporator, which allows the refrigerant to be alternately distributed in the area between the inlet pipe 13 and the outlet pipe 14. This allows the fluid to circulate multiple times between the upper manifold 11 and the lower manifold 12, thereby improving the heat exchange efficiency of the evaporator, reducing the temperature difference on the evaporator surface, improving the temperature uniformity of the evaporator, and improving the overall vehicle comfort.
[0069] Please continue reading. Figures 1 to 7 To understand the specific structure of the WV process microchannel evaporator 10. Optionally, in this embodiment, both the first flat tube assembly 18 and the second flat tube assembly 19 include multiple flat tubes arranged side by side. The lower manifold 12 is located directly below the upper manifold 11.
[0070] As shown in the figure, in the optional embodiment, the first flat tube assembly 18 and the second flat tube assembly 19 are arranged in parallel. This ensures smooth flat tube arrangement, reduces the fluid path within the flat tubes, and reduces manufacturing costs. It is easy to understand that in other embodiments, the first flat tube assembly 18 and the second flat tube assembly 19 may also have an included angle; this is merely an example and not a limitation.
[0071] Furthermore, in an optional embodiment, along the width direction of the WV process microchannel evaporator 10, the first channel 15 of the upper manifold 11 and the first channel 15 of the lower manifold 12 are both located at one end, and the second channel 16 of the upper manifold 11 and the second channel 16 of the lower manifold 12 are both located at the other end. This simplifies the assembly and maintenance of the evaporator. That is, the first channels 15 and second channels 16 of the upper and lower manifolds 12 are arranged facing each other. It is easy to understand that in other embodiments, the first channels 15 and second channels 16 of the upper and lower manifolds 12 can also be staggered, etc. This is just an example and is not limited.
[0072] In an optional implementation, the inlet pipe 13 and the outlet pipe 14 are located on the same side along the length of the WV process microchannel evaporator 10. This side orientation helps to reduce the space occupied by the inlet and outlet pipes. It is easy to understand that in other embodiments, the inlet pipe 13 and the outlet pipe 14 are also provided on opposite sides; this is merely an example and not a limitation.
[0073] In an optional embodiment, in the upper manifold 11 and / or the lower manifold 12, the first channel 15 and the second channel 16 are separated by a flow plate 440; a flow groove 441 is disposed on the flow plate 440.
[0074] Optional, such as Figure 2 , Figure 3 and Figure 4 In an optional embodiment, the WV process microchannel evaporator 10 further includes a partition 460; the partition 460 is hermetically disposed in the longitudinal section direction of the first channel 15 to divide the first channel 15 into multiple regions; and / or the partition 460 is hermetically disposed in the longitudinal section direction of the second channel 16 to divide the second channel 16 into multiple regions; in the upper manifold 11, two partitions 460 are hermetically disposed in the first channel 15 to form a first region 111, a second region 112 and a third region 113, and one partition 460 is hermetically disposed in the second channel 16 to form an upper left outer region 121 and an upper right outer region 122; in the lower manifold 12, one partition 460 is hermetically disposed in the first channel 15 to form a lower left inner region 210 and a lower right inner region 220.
[0075] Furthermore, in an optional embodiment, the outlet pipe 14 is disposed in the second channel 16 of the lower manifold 12 so that fluid is discharged from one side of the lower outer region 222.
[0076] like Figure 5 As shown, in other optional embodiments, a baffle 460 is further provided in the second channel 16 of the lower manifold 12, so that the lower outer region 222 is divided into a sealed left row region and a right row region by the baffle 460; the left row region and the right row region are respectively connected to the outlet pipe 14. Thus forming a single-inlet, double-outlet process.
[0077] Please continue reading. Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 As can be seen from the figure, in the optional embodiment, both the upper manifold 11 and the lower manifold 12 include a groove 410, a cover plate 420, a plug 430, a flow plate 440 and a protruding plate 450.
[0078] The cover plate 420 is sealed on the top opening of the tank 410; along the length of the tank 410, the plug 430 is sealed at both ends of the tank 410; and the tank 410, the cover plate 420, and the plug 430 enclose a sealed flow collection space.
[0079] The protruding plate 450 is disposed on the bottom wall of the tank 410. The top plate of the protruding plate 450 is sealed to the cover plate 420 through the flow plate 440, and the flow plate 440 extends along the length of the tank 410 to the end caps 430.
[0080] Along the width direction of the tank 410, the tank 410 has a first end and a second end that are opposite to each other;
[0081] The inner wall of the first end of the tank 410, the inner wall of the flow plate 440 near the first end, the top wall of the protruding plate 450 near the first end, and the bottom of the cover plate 420 together enclose and form a sealed first channel 15.
[0082] The inner wall of the second end of the trough 410, the inner wall of the flow plate 440 near the second end, the top wall of the convex plate 450 near the second end, and the bottom of the cover plate 420 together enclose to form a sealed second channel 16.
[0083] The bottom wall of the convex plate 450 and the bottom wall of the tank 410 together form a sealed third channel 17. This three-channel manifold assembly design, with the manifold profile having three channels, divides the evaporator into different areas through the partition plate 460 groove. The different areas are connected by the flow groove 441 and the through hole 451, which can meet the complex process design of different needs, improve the integration of complex processes, and reduce the space occupied by the evaporator.
[0084] In an optional embodiment, the inlet pipe 13 is disposed on the third channel 17 of the upper manifold 11, and the protrusion 450 is provided with a through hole 451 to connect the third channel 17 and the first channel 15; when the through hole 451 is facing the first region 111, the fluid flows from the inlet pipe 13 to the first region 111.
[0085] Example 2
[0086] like Figure 8 As shown, this embodiment is largely the same as the first embodiment, except that the fluid in this embodiment is diverted from the inlet pipe 13 to the second region 112 and the third region 113.
[0087] Furthermore, when the fluid is diverted from the inlet pipe 13 to the second region 112 and the third region 113, a portion of the fluid flows downward from the second region 112 through the first flat tube assembly 18 to the lower left inner region 210, then upward through the first flat tube assembly 18 to the first region 111, then through some flow channels 441 to the upper left outer region 121, then downward through the second flat tube assembly 19 to the lower outer region 222, and finally discharged from the lower outer region 222; another portion of the fluid flows downward from the third region 113 through the first flat tube assembly 18 to the lower right inner region 220, then upward through the first flat tube assembly 18 to the first region 111, then through other flow channels 441 to the upper right outer region 122, then downward through the second flat tube assembly 19 to the lower outer region 222, and finally discharged from the lower outer region 222 through the outlet pipe 14.
[0088] That is, the first region 111 can be connected to the upper left outer region 121 through a partial flow channel 441, and the first region 111 can be connected to the upper right outer region 122 through other flow channels 441; thus forming a fluid path from the inlet pipe 13, the second region 112, the lower left inner region 210, the first region 111, the upper left outer region 121, the lower outer region 222, and the outlet pipe 14, and from the inlet pipe 13, the third region 113, the lower right inner region 220, the first region 111, the upper right outer region 122, the lower outer region 222, and the outlet pipe 14. This forms a two-inlet, one-outlet process.
[0089] Optionally, the inlet pipe 13 is disposed on the third channel 17 of the upper manifold 11, and the protruding plate 450 is provided with a through hole 451 to connect the third channel 17 and the first channel 15. When the through hole 451 is directly opposite the second region 112 and the third region 113 respectively, the fluid flows from the inlet pipe 13 to the second region 112 and the third region 113 respectively.
[0090] like Figure 9Optionally, a baffle 460 is also provided in the second channel 16 of the lower manifold 12, so that the lower outer region 222 is divided into a sealed left row region and a right row region by the baffle 460; the left row region and the right row region are respectively connected to the outlet pipe 14. Thus, a two-inlet and two-outlet process is formed.
[0091] Example 3
[0092] like Figure 10 As shown, this embodiment is largely the same as the second embodiment. The difference is that the first area 111 of this embodiment is also provided with a partition 460, and the lower manifold 12 is connected to the outlet pipe 14 for the left and right rows respectively, thus forming a two-in-two-out process.
[0093] In an optional embodiment, the first region 111 is further provided with a middle partition to divide the first region 111 into a first fluid space and a second fluid space that are sealed to each other; the middle partition is configured to allow the first fluid space to communicate with the upper left outer region 121 through some flow channels 441, and to allow the second fluid space to communicate with the upper right outer region 122 through other flow channels 441.
[0094] In summary, this utility model embodiment provides a WV process microchannel evaporator 10, which has at least the following advantages:
[0095] 1. Innovative process design improves evaporator heat exchange efficiency, reduces evaporator surface temperature difference, improves evaporator temperature uniformity, and enhances overall vehicle comfort.
[0096] 2. The temperature of the left and right temperature zones can be directly controlled through the evaporator (currently, dual-temperature zones are controlled by a single evaporator temperature combined with an external heat source and a partition damper, which is difficult to control and has low precision); improve the precision of temperature zone control; reduce the energy consumption of the whole vehicle; and improve comfort.
[0097] 3. The three-channel manifold enables more complex evaporator designs, improves evaporator integration, and reduces the overall volume of the evaporator.
[0098] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A WV process microchannel evaporator, characterized in that, include: Upper manifold (11), lower manifold (12), inlet pipe (13), and outlet pipe (14); The upper manifold (11) is located above the lower manifold (12); the inlet pipe (13) is disposed on the upper manifold (11), and the outlet pipe (14) is disposed on the lower manifold (12); Both the upper manifold (11) and the lower manifold (12) include a first channel (15) and a second channel (16); the entire area of the first channel (15) of the upper manifold (11) is connected to the entire area of the first channel (15) of the lower manifold (12) through a first flat tube assembly (18); the entire area of the second channel (16) of the upper manifold (11) is connected to the entire area of the second channel (16) of the lower manifold (12) through a second flat tube assembly (19); In the upper collector tube (11), the first channel (15) includes a first region (111), a second region (112) and a third region (113) that are separated from each other, and the second channel (16) includes a left upper outer region (121) and a right upper outer region (122) that are separated from each other. In the lower manifold (12), the first channel (15) includes a lower left inner region (210) and a lower right inner region (220) that are separated from each other, and the second channel (16) includes a lower outer region (222); When fluid flows from the inlet pipe (13) to the first region (111), the fluid flows downward from the first region (111) through the first flat tube assembly (18) to the lower left inner region (210) and the lower right inner region (220) respectively; wherein the fluid in the lower left inner region (210) flows upward through the first flat tube assembly (18) to the second region (112), then flows through a partial flow channel (441) to the upper left outer region (121), then flows downward through the second flat tube assembly (19) to the lower outer region (222); and finally is discharged from the lower outer region (222); The fluid in the lower right inner region (220) flows upward through the first flat tube assembly (18) to the third region (113), then flows through other flow channels (441) to the upper right outer region (122), then flows downward through the second flat tube assembly (19) to the lower outer region (222), and finally is discharged from the lower outer region (222) through the outlet pipe (14). Or when fluid is diverted from the inlet pipe (13) to the second region (112) and the third region (113); a portion of the fluid flows downward from the second region (112) through the first flat tube assembly (18) to the lower left inner region (210), then upward through the first flat tube assembly (18) to the first region (111), then through some flow channels (441) to the upper left outer region (121), then downward through the second flat tube assembly (19) to the lower outer region (222), and finally from... The lower outer region (222) is discharged; another part of the fluid flows downward from the third region (113) through the first flat tube assembly (18) to the lower right inner region (220), then upward through the first flat tube assembly (18) to the first region (111), then through other flow channels (441) to the upper right outer region (122), then downward through the second flat tube assembly (19) to the lower outer region (222), and finally discharged from the lower outer region (222) through the outlet pipe (14).
2. The WV process microchannel evaporator according to claim 1, characterized in that: The first flat tube assembly (18) and the second flat tube assembly (19) are arranged in parallel.
3. The WV process microchannel evaporator according to claim 1, characterized in that: Along the width direction of the WV process microchannel evaporator, the first channel (15) of the upper manifold (11) and the first channel (15) of the lower manifold (12) are both located at one end, and the second channel (16) of the upper manifold (11) and the second channel (16) of the lower manifold (12) are both located at the other end.
4. The WV process microchannel evaporator according to claim 1, characterized in that: Along the length of the WV process microchannel evaporator, the inlet pipe (13) and the outlet pipe (14) are located on the same side.
5. The WV process microchannel evaporator according to claim 1, characterized in that: It also includes a partition (460); the partition (460) is hermetically disposed in the longitudinal section direction of the first channel (15) to divide the first channel (15) into multiple regions; and / or the partition (460) is hermetically disposed in the longitudinal section direction of the second channel (16) to divide the second channel (16) into multiple regions; In the upper manifold (11), two partitions (460) are sealed in the first channel (15) to form the first region (111), the second region (112) and the third region (113), and one partition (460) is sealed in the second channel (16) to form the upper left outer region (121) and the upper right outer region (122); In the lower manifold (12), the first channel (15) is provided with a partition (460) in a closed manner to form the lower left inner region (210) and the lower right inner region (220).
6. The WV process microchannel evaporator according to claim 5, characterized in that: The outlet pipe (14) is disposed in the second channel (16) of the lower manifold (12) so that fluid is discharged from one side of the lower outer region (222); Alternatively, a partition (460) may be provided in the second channel (16) of the lower manifold (12) so that the lower outer region (222) is divided into a sealed left row region and a right row region by the partition (460); the left row region and the right row region are respectively connected to the outlet pipe (14).
7. The WV process microchannel evaporator according to claim 5, characterized in that: The first region (111) is further provided with a middle partition (460) to divide the first region (111) into a first fluid space and a second fluid space that are sealed to each other; The intermediate partition (460) is configured to allow the first fluid space to communicate with the upper left outer region (121) through some flow channels (441), and to allow the second fluid space to communicate with the upper right outer region (122) through other flow channels (441).
8. The WV process microchannel evaporator according to claim 1, characterized in that: In the upper manifold (11) and / or the lower manifold (12), the first channel (15) and the second channel (16) are separated by a flow plate (440); the flow groove (441) is disposed on the flow plate (440).
9. The WV process microchannel evaporator according to claim 8, characterized in that: The upper manifold (11) or the lower manifold (12) both include a trough (410), a cover plate (420), a plug (430), a flow plate (440), and a protruding plate (450); The cover plate (420) is sealed on the top opening of the trough (410); along the length of the trough (410), the plug (430) is sealed at both ends of the trough (410); and the trough (410), the cover plate (420), and the plug (430) enclose a sealed flow collection space. The protruding plate (450) is disposed on the bottom wall of the groove (410), and the top plate of the protruding plate (450) is sealed to the cover plate (420) through the flow plate (440), and the flow plate (440) extends along the length of the groove (410) to the end caps (430). Along the width direction of the groove (410), the groove (410) has a first end and a second end opposite to each other; The inner wall of the first end of the trough (410), the inner wall of the flow plate (440) near the first end, the top wall of the convex plate (450) near the first end, and the bottom of the cover plate (420) together form a sealed first channel (15). The inner wall of the second end of the trough (410), the inner wall of the flow plate (440) near the second end, the top wall of the convex plate (450) near the second end, and the bottom of the cover plate (420) together form a sealed second channel (16). The bottom wall of the convex plate (450) and the bottom wall of the groove (410) together form a closed third channel (17).
10. The WV process microchannel evaporator according to claim 9, characterized in that: The inlet pipe (13) is disposed on the third channel (17) of the upper collector pipe (11), and the protruding plate (450) is provided with a through hole (451) to connect the third channel (17) and the first channel (15); When the through hole (451) is facing the first region (111), the fluid flows from the inlet pipe (13) to the first region (111); When the through hole (451) is directly opposite the second region (112) and the third region (113) respectively, the fluid flows from the inlet pipe (13) to the second region (112) and the third region (113) respectively.