X-flow micro-channel evaporator
By using the cross-flow layer design of the X-process microchannel evaporator, the problem of uneven surface temperature of the microchannel evaporator is solved, achieving higher temperature uniformity and air conditioning comfort, and improving refrigerant flow efficiency.
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 current flow arrangement of microchannel evaporators results in poor surface temperature uniformity, making it difficult to meet the increasingly higher comfort requirements of passenger vehicles.
The X-flow microchannel evaporator design, through the cross-flow layer design of the upper and lower manifolds, forms a cross-temperature distribution at the inlet and outlet, reducing the temperature difference at different points on the evaporator surface and improving temperature uniformity.
It improves the uniformity of evaporator surface temperature, enhances the comfort of air conditioning, and improves the flow efficiency of refrigerant in the flat tube.
Smart Images
Figure CN223965646U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of evaporator technology, and more specifically, to an X-flow microchannel evaporator. Background Technology
[0002] As a core component of air conditioning systems, the evaporator is primarily used to convert liquid refrigerant into gaseous refrigerant, thereby absorbing heat from the surrounding environment to achieve cooling or heating effects. Microchannel evaporators, characterized by high heat exchange efficiency, small size, low charge volume, and low cost, are widely used in the passenger vehicle market and dominate the automotive air conditioning market. However, existing technologies have the following drawbacks:
[0003] 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, which makes it difficult to meet the increasingly higher comfort requirements of passenger vehicles. Utility Model Content
[0004] The purpose of this invention includes, for example, providing an X-flow microchannel evaporator that enables cross-distribution of high and low refrigerant temperatures between the inlet and outlet, reducing temperature differences at different points on the evaporator surface, improving the temperature uniformity of the evaporator surface, and enhancing air conditioning comfort.
[0005] The embodiments of this utility model can be implemented as follows:
[0006] In a first aspect, this utility model provides an X-process microchannel evaporator, comprising:
[0007] Upper manifold, lower manifold, inlet pipe, and outlet pipe;
[0008] The upper manifold is located above the lower manifold; the inlet pipe and the outlet pipe are respectively disposed at both ends of the upper manifold; both the upper and lower manifolds include a first channel and a second channel; the entire area of the first channel of the upper manifold is connected to the entire area of the first channel of the lower manifold through a first flat pipe assembly; the entire area of the second channel of the upper manifold is connected to the entire area of the second channel of the lower manifold through a second flat pipe assembly.
[0009] The first channel of the upper manifold includes an upper inner region; the second channel of the upper manifold includes an upper outer left region and an upper outer right region that are separated from each other.
[0010] The first channel of the lower manifold includes a lower inner left region and a lower inner right region that are separated from each other; the second channel of the lower manifold includes a lower outer left region and a lower outer right region that are separated from each other.
[0011] The lower outer right region can be connected to the lower inner left region through a flow channel; the lower outer left region can be connected to the lower inner right region through a middle channel;
[0012] Fluid enters from the inlet pipe into the upper outer left region, flows downward through the second flat tube assembly into the lower outer left region, and flows through the flow hole of the middle channel into the lower inner right region; then the fluid flows upward through the first flat tube assembly into the upper inner region; the fluid gathers at one end in the upper inner region and flows downward through the first flat tube assembly into the lower inner left region, then flows downward through the flow groove into the lower outer right region, then flows upward through the second flat tube assembly into the upper outer right region, and flows out through the outlet pipe.
[0013] In an optional embodiment, the first flat tube assembly and the second flat tube assembly are arranged in parallel.
[0014] In an optional embodiment, along the width direction of the X-flow 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 first channel of the upper manifold and the first channel of the lower manifold are both located at the other end.
[0015] In an optional embodiment, both the first flat tube assembly and the second flat tube assembly include a plurality of flat tubes arranged side by side, with fins disposed between adjacent flat tubes.
[0016] 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.
[0017] In the upper manifold, a partition is provided in the second channel to form an upper outer left region and an upper outer right region;
[0018] In the lower manifold, the first channel is provided with a partition in a sealed manner to form the lower inner left region and the lower inner right region, and the second channel is provided with a partition in a sealed manner to form the lower outer left region and the lower outer right region.
[0019] 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.
[0020] In an optional embodiment, both the upper and lower manifolds include a trough, a cover plate, a plug, a flow plate, and a convex plate; the cover plate is hermetically disposed on the top opening of the trough; along the length of the trough, the plugs are hermetically disposed on both ends of the trough; and the trough, cover plate, and plugs enclose a hermetically sealed manifold space; the convex plate is disposed on the bottom wall of the trough, and the top plate of the convex plate is hermetically connected to the cover plate through the flow plate; along the width of the trough, the trough has a first end and a second end opposite to each other;
[0021] The inner wall of the first end of the trough, the inner wall of the flow plate near the first end, the outer wall of the convex plate near the first end, and the bottom of the cover plate together form a sealed first channel.
[0022] The inner wall of the second end of the trough, the inner wall of the flow plate near the second end, the outer wall of the convex plate near the second end, and the bottom of the cover plate together form a sealed second channel.
[0023] The bottom of the convex plate and the bottom wall of the groove together form a sealed intermediate channel.
[0024] In an optional embodiment, a first flow hole communicating with the lower inner right region is provided on the middle channel of the lower manifold.
[0025] The middle channel is provided with a second flow hole that communicates with the lower outer left region.
[0026] In an optional embodiment, the cover plate is provided with a plurality of first mating holes at the position opposite to the first channel, and the first mating holes are engaged with a plurality of flat tubes of the first flat tube assembly.
[0027] The cover plate is provided with a plurality of second mating holes at the position opposite to the second channel, and the second mating holes are engaged with a plurality of flat tubes of the second flat tube assembly.
[0028] In an optional embodiment, a third flow hole communicating with the upper outer left region is provided on the middle channel of the upper manifold, and the inlet pipe is provided in the middle channel.
[0029] The beneficial effects of this utility model embodiment include, for example:
[0030] The X-flow microchannel evaporator of this design includes an upper manifold, a lower manifold, an inlet pipe, and an outlet pipe. The first channel of the upper manifold includes an upper inner region; the second channel includes two separate upper outer left and upper outer right regions. The first channel of the lower manifold includes two separate lower inner left and lower inner right regions; the second channel includes two separate lower outer left and lower outer right regions. The lower outer right region can communicate with the lower inner left region through a flow channel; the lower outer left region can communicate with the lower inner right region through a middle channel. This forms a flow path from the inlet pipe, upper outer left region, lower outer left region, lower inner right region, upper inner region, lower inner left region, lower outer right region, upper outer right region, and outlet pipe. This cross-flow layer design allows for a cross-distribution of high and low temperatures at the inlet and outlet, thereby reducing temperature differences at different points on the evaporator surface, improving the temperature uniformity of the evaporator surface, and enhancing air conditioning comfort. Attached Figure Description
[0031] 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.
[0032] Figure 1 This is a schematic diagram of the structure of the X-process microchannel evaporator according to an embodiment of the present invention;
[0033] Figure 2 This is a cross-sectional view of the upper manifold of the X-process microchannel evaporator according to an embodiment of the present invention;
[0034] Figure 3 This is a cross-sectional view of the lower manifold of the X-process microchannel evaporator according to an embodiment of the present invention;
[0035] Figure 4 This is a cross-sectional view of the lower manifold of the X-process microchannel evaporator according to an embodiment of the present invention.
[0036] Figure 5 This is a schematic diagram of the X-flow microchannel evaporator according to an embodiment of the present invention;
[0037] Figure 6 This is a schematic diagram of the manifold structure of the X-process microchannel evaporator according to an embodiment of the present invention;
[0038] Figure 7 This is a partial schematic diagram of the manifold of the X-process microchannel evaporator according to an embodiment of the present invention;
[0039] Figure 8This is a cross-sectional schematic diagram of the manifold of the X-process microchannel evaporator according to an embodiment of the present invention.
[0040] Icons: 10-X-process microchannel evaporator; 11-Upper manifold; 12-Lower manifold; 13-Inlet pipe; 14-Outlet pipe; 15-First flat tube assembly; 16-Second flat tube assembly; 17-First channel; 18-Second channel; 19-Middle channel; 110-Upper inner region; 121-Upper outer left region; 122-Upper outer right region; 211-Lower inner left region; 212-Lower inner right region; 221-Lower outer left region; 222-Lower outer right region; 200-Fin; 310-Tank; 320-Cover plate; 321-First mating hole; 322-Second mating hole; 330-Plug; 340-Flow plate; 341-Flow groove; 350-Protruding plate; 370-Baffle plate; 411-First flow hole; 412-Second flow hole; 413-Third flow hole. Detailed Implementation
[0041] 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.
[0042] 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.
[0043] 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.
[0044] 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.
[0045] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.
[0046] 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.
[0047] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This embodiment provides an X-process microchannel evaporator 10, comprising:
[0048] Upper manifold 11, lower manifold 12, inlet pipe 13, and outlet pipe 14;
[0049] The upper manifold 11 is located above the lower manifold 12; the inlet pipe 13 and the outlet pipe 14 are respectively located at both ends of the upper manifold 11; both the upper manifold 11 and the lower manifold 12 include a first channel 17 and a second channel 18; the entire area of the first channel 17 of the upper manifold 11 is connected to the entire area of the first channel 17 of the lower manifold 12 through the first flat pipe assembly 15; the entire area of the second channel 18 of the upper manifold 11 is connected to the entire area of the second channel 18 of the lower manifold 12 through the second flat pipe assembly 16.
[0050] The first channel 17 of the upper collector tube 11 includes an upper inner region 110; the second channel 18 of the upper collector tube 11 includes an upper outer left region 121 and an upper outer right region 122 that are separated from each other.
[0051] The first channel 17 of the lower manifold 12 includes a lower inner left region 211 and a lower inner right region 212 that are separated from each other; the second channel 18 of the lower manifold 12 includes a lower outer left region 221 and a lower outer right region 222 that are separated from each other.
[0052] The lower outer right region 222 can be connected to the lower inner left region 211 through the flow channel 341; the lower outer left region 221 can be connected to the lower inner right region 212 through the middle channel 19.
[0053] Fluid is input from inlet pipe 13 to upper outer left region 121, flows downward through second flat tube assembly 16 to lower outer left region 221, flows through the flow hole of middle channel 19 to lower inner right region 212; then the fluid flows upward through first flat tube assembly 15 to upper inner region 110; the fluid gathers at one end in upper inner region 110 and flows downward through first flat tube assembly 15 to lower inner left region 211, then flows through flow groove 341 to lower outer right region 222, then flows upward through second flat tube assembly 16 to upper outer right region 122, and flows out through outlet pipe 14.
[0054] The X-flow microchannel evaporator 10 of this scheme has an upper manifold 11 with a first channel 17 including an upper inner region 110; a second channel 18 including an upper outer left region 121 and an upper outer right region 122 separated from each other; a lower manifold 12 with a first channel 17 including a lower inner left region 211 and a lower inner right region 212 separated from each other; and a lower manifold 12 with a second channel 18 including a lower outer left region 221 and a lower outer right region 222 separated from each other. The lower outer right region 222 can communicate with the lower inner left region 211 through a flow channel 341; and the lower outer left region 221 can communicate with the lower inner right region 212 through an intermediate channel 19.
[0055] like Figure 5 As shown, this forms a flow path from inlet pipe 13, upper outer left region 121, lower outer left region 221, lower inner right region 212, upper inner region 110, lower inner left region 211, lower outer right region 222, upper outer right region 122, and outlet pipe 14. This cross-flow layer design allows for a cross-distribution of high and low temperatures at the inlet and outlet, thereby reducing temperature differences at different points on the evaporator surface, improving the temperature uniformity of the evaporator surface, and enhancing air conditioning comfort.
[0056] Please continue reading. Figures 1 to 8 To understand more structural details of the X-process microchannel evaporator 10. As can be seen from the figure, the upper manifold 11 and the lower manifold 12 are arranged opposite each other, and the inlet pipe 13 and the outlet pipe 14 are symmetrically arranged on both sides of the length of the upper manifold 11.
[0057] In an optional embodiment, the first flat tube assembly 15 and the second flat tube assembly 16 are arranged in parallel. This facilitates the assembly and maintenance of the flat tubes and also improves the flow efficiency of the refrigerant in the flat tubes.
[0058] In an optional embodiment, along the width direction of the X-flow microchannel evaporator 10, the first channel 17 of the upper manifold 11 and the first channel 17 of the lower manifold 12 are both located at one end, and the first channel 17 of the upper manifold 11 and the first channel 17 of the lower manifold 12 are both located at the other end. That is, the first channels 17 of the upper and lower manifolds are arranged facing each other, and the second channels 18 of the upper and lower manifolds are also arranged facing each other, which facilitates the efficient operation of the refrigerant in the flat tubes and provides working efficiency.
[0059] In an optional embodiment, both the first flat tube assembly 15 and the second flat tube assembly 16 include multiple flat tubes arranged side by side, with fins 200 disposed between adjacent flat tubes. Only the fins 200 on the outlet side are shown in the figure.
[0060] like Figure 2 , Figure 3 and Figure 4As shown, in an optional embodiment, the X-process microchannel evaporator 10 further includes a baffle 370; the baffle 370 is hermetically disposed in the longitudinal section direction of the first channel 17 to divide the first channel 17 into multiple regions; and / or the baffle 370 is hermetically disposed in the longitudinal section direction of the second channel 18 to divide the second channel 18 into multiple regions; in the upper manifold 11, a baffle 370 is hermetically disposed in the second channel 18 to form an upper outer left region 121 and an upper outer right region 122; in the lower manifold 12, a baffle 370 is hermetically disposed in the first channel 17 to form a lower inner left region 211 and a lower inner right region 212, and a baffle 370 is hermetically disposed in the second channel 18 to form a lower outer left region 221 and a lower outer right region 222. The baffle 370 can easily and efficiently divide the first / second channel of the manifold into preset regions.
[0061] In an optional embodiment, in the upper manifold 11 and / or the lower manifold 12, the first channel 17 and the second channel 18 are separated by a flow plate 340; a flow groove 341 is disposed on the flow plate 340. This facilitates the connection of different areas.
[0062] Please continue reading. Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 As can be seen from the figure, in the optional embodiment, both the upper manifold 11 and the lower manifold 12 include a tank 310, a cover plate 320, a plug 330, a flow plate 340, and a convex plate 350; the cover plate 320 is sealed on the top opening of the tank 310; along the length direction of the tank 310, the plug 330 is respectively sealed at both ends of the tank 310; and the tank 310, the cover plate 320, and the plug 330 enclose a sealed manifold space; the convex plate 350 is disposed on the bottom wall of the tank 310, and the top plate of the convex plate 350 is sealed to the cover plate 320 through the flow plate 340; along the width direction of the tank 310, the tank 310 has a first end and a second end opposite to each other.
[0063] The inner wall of the first end of the trough 310, the inner wall of the flow plate 340 near the first end, the outer wall of the protruding plate 350 near the first end, and the bottom of the cover plate 320 together form a sealed first channel 17.
[0064] The inner wall of the second end of the trough 310, the inner wall of the flow plate 340 near the second end, the outer wall of the convex plate 350 near the second end, and the bottom of the cover plate 320 together enclose and form a sealed second channel 18.
[0065] The bottom of the convex plate 350 and the bottom wall of the groove 310 together form a closed intermediate channel 19.
[0066] This innovative three-channel manifold assembly design features a three-channel manifold profile. Internally, the evaporator is divided into different areas by a partition 370. These areas are connected by flow channels 341 and flow holes, meeting the needs of complex process designs with different requirements. This improves the integration of complex processes and reduces the space occupied by the evaporator.
[0067] from Figure 7 As can be seen from the optional embodiment, the cover plate 320 is provided with a plurality of first mating holes 321 at the position directly opposite the first channel 17, and the first mating holes 321 are inserted into and mated with a plurality of flat tubes of the first flat tube assembly 15; the cover plate 320 is provided with a plurality of second mating holes 322 at the position directly opposite the second channel 18, and the second mating holes 322 are inserted into and mated with a plurality of flat tubes of the second flat tube assembly 16. The first mating holes 321 and the second mating holes 322 facilitate the assembly and maintenance of the flat tubes.
[0068] from Figure 3 , Figure 4 and Figure 8 It can also be seen that, in the optional implementation, in the lower manifold 12, the middle channel 19 is provided with a first flow hole 411 communicating with the lower inner right region 212; the middle channel 19 is provided with a second flow hole 412 communicating with the lower outer left region 221.
[0069] from Figure 2 It can also be seen that, in an optional embodiment, a third flow hole 413 communicating with the upper outer left region 121 is provided on the middle channel 19 of the upper manifold 11, and the inlet pipe 13 is provided in the middle channel 19. This allows the fluid in the inlet pipe 13 to be arranged along the length direction of the upper manifold 11.
[0070] In summary, this utility model embodiment provides an X-process microchannel evaporator 10, which has at least the following advantages:
[0071] 1. Innovative process design improves evaporator heat exchange efficiency, reduces evaporator surface temperature difference, improves evaporator temperature uniformity, and enhances overall vehicle comfort;
[0072] 2. The channel manifold enables more complex evaporator designs, improves evaporator integration, and reduces the overall volume of the evaporator.
[0073] 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. An X-flow 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) and the outlet pipe (14) are respectively disposed at both ends of the upper manifold (11); both the upper manifold (11) and the lower manifold (12) include a first channel (17) and a second channel (18); the entire area of the first channel (17) of the upper manifold (11) is connected to the entire area of the first channel (17) of the lower manifold (12) through a first flat pipe assembly (15); the entire area of the second channel (18) of the upper manifold (11) is connected to the entire area of the second channel (18) of the lower manifold (12) through a second flat pipe assembly (16); The first channel (17) of the upper manifold (11) includes an upper inner region (110); the second channel (18) of the upper manifold (11) includes an upper outer left region (121) and an upper outer right region (122) that are separated from each other. The first channel (17) of the lower manifold (12) includes a lower inner left region (211) and a lower inner right region (212) that are separated from each other; the second channel (18) of the lower manifold (12) includes a lower outer left region (221) and a lower outer right region (222) that are separated from each other. The lower outer right region (222) can be connected to the lower inner left region (211) through the flow channel (341); the lower outer left region (221) can be connected to the lower inner right region (212) through the middle channel (19); Fluid is input from the inlet pipe (13) to the upper outer left region (121), flows downward to the lower outer left region (221) through the second flat tube assembly (16), and flows to the lower inner right region (212) through the flow hole of the middle channel (19); The fluid then flows upward through the first flat tube assembly (15) to the upper inner region (110); the fluid gathers at one end in the upper inner region (110) and flows downward through the first flat tube assembly (15) to the lower inner left region (211), then flows through the flow channel (341) to the lower outer right region (222), then flows upward through the second flat tube assembly (16) to the upper outer right region (122), and flows out through the outlet pipe (14).
2. The X-process microchannel evaporator according to claim 1, characterized in that: The first flat tube assembly (15) and the second flat tube assembly (16) are arranged in parallel.
3. The X-process microchannel evaporator according to claim 1, characterized in that: Along the width direction of the X-flow microchannel evaporator, the first channel (17) of the upper manifold (11) and the first channel (17) of the lower manifold (12) are both located at one end, and the first channel (17) of the upper manifold (11) and the first channel (17) of the lower manifold (12) are both located at the other end.
4. The X-flow microchannel evaporator according to claim 1, characterized in that: Both the first flat tube assembly (15) and the second flat tube assembly (16) include multiple flat tubes arranged side by side, with fins (200) provided between adjacent flat tubes.
5. The X-flow microchannel evaporator according to claim 1, characterized in that: It also includes a partition (370); the partition (370) is hermetically disposed in the longitudinal section direction of the first channel (17) to divide the first channel (17) into multiple regions; and / or the partition (370) is hermetically disposed in the longitudinal section direction of the second channel (18) to divide the second channel (18) into multiple regions; In the upper manifold (11), a partition (370) is provided in the second channel (18) to form an upper outer left region (121) and an upper outer right region (122); In the lower manifold (12), the first channel (17) is provided with a partition (370) to form the lower inner left region (211) and the lower inner right region (212), and the second channel (18) is provided with a partition (370) to form the lower outer left region (221) and the lower outer right region (222).
6. The X-process microchannel evaporator according to claim 1, characterized in that: In the upper manifold (11) and / or the lower manifold (12), the first channel (17) and the second channel (18) are separated by a flow plate (340); the flow groove (341) is disposed on the flow plate (340).
7. The X-process microchannel evaporator according to claim 6, characterized in that: The upper manifold (11) or the lower manifold (12) both include a trough (310), a cover plate (320), a plug (330), a flow plate (340), and a protruding plate (350); the cover plate (320) is sealed on the top opening of the trough (310); along the length of the trough (310), the plug (330) is sealed on the trough (310) and the convex plate (350) is sealed on the trough (310). 10) at both ends; and the trough (310), cover plate (320), and plug (330) enclose to form a closed flow collection space; the convex plate (350) is disposed on the bottom wall of the trough (310), and the top plate of the convex plate (350) is sealed to the cover plate (320) through the flow plate (340); along the width direction of the trough (310), the trough (310) has a first end and a second end opposite to each other; The inner wall of the first end of the trough (310), the inner wall of the flow plate (340) near the first end, the outer wall of the convex plate (350) near the first end, and the bottom of the cover plate (320) together form a sealed first channel (17). The inner wall of the second end of the trough (310), the inner wall of the flow plate (340) near the second end, the outer wall of the convex plate (350) near the second end, and the bottom of the cover plate (320) together form a sealed second channel (18). The bottom of the convex plate (350) and the bottom wall of the groove (310) together form a closed intermediate channel (19).
8. The X-flow microchannel evaporator according to claim 7, characterized in that: In the lower manifold (12), the middle channel (19) is provided with a first flow hole (411) that communicates with the lower inner right region (212); The intermediate channel (19) is provided with a second flow hole (412) that communicates with the lower outer left region (221).
9. The X-process microchannel evaporator according to claim 7, characterized in that: The cover plate (320) is provided with a plurality of first mating holes (321) at the position opposite to the first channel (17), and the first mating holes (321) are inserted into and mated with a plurality of flat tubes of the first flat tube assembly (15). The cover plate (320) is provided with a plurality of second mating holes (322) at the position opposite to the second channel (18), and the second mating holes (322) are engaged with a plurality of flat tubes of the second flat tube assembly (16).
10. The X-flow microchannel evaporator according to claim 7, characterized in that: In the upper manifold (11), a third flow hole (413) communicating with the upper outer left region (121) is provided on the middle channel (19), and the inlet pipe (13) is provided in the middle channel (19).