Single-core sealing process and multi-core combined sealing process

Abstract

The invention relates to the technical field of heating ventilation air conditioners, in particular to a single-core sealing process and a multi-core combined sealing process. According to the single-core sealing process, the tops of the heat exchange plates are subjected to hot melting sealing, the windward side ends and the leeward side ends of the wet channels formed by the adjacent heat exchange plates are provided with the sealing strips, and the sealing strips and the end faces of the wet channels are sealed; and finally, the sealing strips between the combined heat exchange plates are sealed with the frame, so that the indirect evaporation core body can be ensured to have good sealing performance, meanwhile, the strength of the indirect evaporation core body can be effectively improved due to even the sealing strips, the performance can be more stable, air mixing and water leakage do not occur in a dry channel and a wet channel, and the service life of the indirect evaporation core body is prolonged. And the evaporation efficiency can be improved. The invention further provides a multi-core combined sealing process, the multiple indirect evaporation cores can be effectively sealed, and therefore it is ensured that the evaporation efficiency of the indirect evaporation cores can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of heating, ventilation and air conditioning, and in particular to a single-core sealing process and a multi-core combined sealing process. Background Art

[0002] At present, most of the indirect evaporation core materials available on the market use non-metallic material cores, and the dry and wet channels use horizontal and vertical polymer material skeleton stacking.

[0003] Due to the limitation of mold size, a single-piece frame needs to be placed by splicing two horizontal or vertical frames, leaving gaps at the joints, and there are gaps between the horizontal and vertical directions, which will cause wind cross-flow and water leakage in the dry and wet channels, and will also lead to a significant reduction in evaporation efficiency. Summary of the invention

[0004] (I) The present invention provides a single core sealing process and a multi-core combined sealing process, which alleviate the technical problem of wind cross-talk and water leakage in the core dry and wet channels in the prior art, thereby reducing the evaporation efficiency.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a single core sealing process for sealing an indirect evaporation core, wherein the indirect evaporation core comprises a heat exchange plate, a sealing strip and a frame, and comprises the following steps:

[0007] Step 1, the heat exchange plate has microchannels and forms a dry channel, and the top of the heat exchange plate is hot-melt sealed;

[0008] Step 2, adjacent heat exchange plates form a wet channel, the windward end and the leeward end of the wet channel are both provided with the sealing strip, and the sealing strip is sealed with the end surface of the wet channel;

[0009] Step 3: sealing the sealing strips and the frame between the assembled heat exchange plates.

[0010] Furthermore, in step 1, the top of the heat exchange plate is melted together at its edges by heat fusion to form a sealed edge.

[0011] Furthermore, the edge sealing is triangular.

[0012] Furthermore, in step 2, the distance between the sealing strip and the end surface of the heat exchange plate is 5-12 mm.

[0013] Furthermore, a filling groove is formed between the side wall of the sealing strip and the end surface of the heat exchange plate, and hot melt adhesive is used to fill the filling groove to complete the sealing.

[0014] Furthermore, in step 3, an accommodating cavity is formed between the frame and the heat exchange plate along the direction of the dry channel, and the dry channel in the accommodating cavity is blocked by a blocking member.

[0015] Furthermore, a plurality of glue holes are provided on the frame, the glue holes are connected to the accommodating cavity, and the glue holes are used to inject glue into the accommodating cavity.

[0016] An embodiment of the present invention also provides a multi-core combined sealing process for sealing multiple indirect evaporation cores, including the above-mentioned single-core sealing process, wherein the multiple indirect evaporation cores are arranged side by side after sealing, and the two opposite end faces are circumferentially affixed with double-sided butyl tape, and the indirect evaporation core is provided with a fixing plate at the top end of the indirect evaporation core on which the double-sided butyl tape is affixed, and the two adjacent fixing plates are fixed by bolts.

[0017] Furthermore, structural adhesive is used to seal between the bolts and the connecting plate.

[0018] Furthermore, a water receiving tray is provided below the connector on the lower water surface side of the wet channel of the sealed indirect evaporation core, the water receiving tray is connected to a water tank, and a water receiving tank is provided on the spraying surface of the indirect evaporation core.

[0019] Beneficial effects of the present invention:

[0020] The present invention provides a single-core sealing process, which performs hot-melt sealing on the top of the heat exchange plate and provides sealing strips on the windward side and the leeward side of the wet channel formed by adjacent heat exchange plates, seals the sealing strips and the end faces of the wet channel, and finally seals the sealing strips and the frame between the assembled heat exchange plates, thereby ensuring that the indirect evaporation core has good sealing performance. At the same time, due to the sealing strips, its strength can be effectively improved, the performance can be more stable, and wind and water leakage will not occur in the dry and wet channels, thereby improving the evaporation efficiency.

[0021] The present invention also provides a multi-core combined sealing process, which can effectively seal multiple indirect evaporation cores, thereby ensuring that the evaporation efficiency thereof can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1A structural diagram of an indirect evaporation core body of a single core body sealing process and a multi-core body combined sealing process provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of heat exchange plate edge sealing of a single core sealing process and a multi-core combined sealing process provided by an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of wet channel sealing of a single core sealing process and a multi-core combined sealing process provided by an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of a filling slot for a single core sealing process and a multi-core combined sealing process provided by an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of plugging and gluing of a single-core sealing process and a multi-core combined sealing process provided by an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of a heat exchange plate and frame pasting area of ​​a single-core sealing process and a multi-core combined sealing process provided by an embodiment of the present invention;

[0029] Figure 7 A schematic diagram of the arrangement of multiple indirect evaporation cores in a single core sealing process and a multi-core combined sealing process provided by an embodiment of the present invention;

[0030] Figure 8 A schematic diagram of gluing adjacent indirect evaporation cores in a single core sealing process and a multi-core combined sealing process provided by an embodiment of the present invention;

[0031] Fig. 9 A schematic diagram of a connector for a single-core sealing process and a multi-core combined sealing process provided by an embodiment of the present invention;

[0032] Fig.10 A schematic diagram of a water receiving tray for a single core sealing process and a multi-core combined sealing process provided by an embodiment of the present invention;

[0033] Fig.11 A schematic diagram of a water receiving box for a single-core sealing process and a multi-core combined sealing process provided in an embodiment of the present invention.

[0034] icon:

[0035] 100-indirect evaporation core; 101-heat exchange plate; 102-sealing strip; 103-frame; 104-microchannel; 105-edge sealing; 106-filling slot; 107-accommodating chamber; 108-water tray; 109-water tank; 110-water tank; 111-joining seam; 112-pasting area; 113-single-sided butyl tape;

[0036] 200-blocking piece;

[0037] 300-glue hole;

[0038] 400-Double-sided butyl tape;

[0039] 500-Fixed plate. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "upper", "lower", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the inside of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0043] like Figures 1 to 6As shown, the present invention provides a single core sealing process for sealing an indirect evaporation core 100, wherein the indirect evaporation core 100 includes a heat exchange plate 101, a sealing strip 102 and a frame 103, and includes the following steps: Step 1, the heat exchange plate 101 is provided with a microchannel 104, and a dry channel is formed, and the top of the heat exchange plate 101 is hot-melt sealed; Step 2, adjacent heat exchange plates 101 form a wet channel, and the windward end and the leeward end of the wet channel are both provided with a sealing strip 102, and the sealing strip 102 is sealed with the end surface of the wet channel; Step 3, the sealing strip 102 and the frame 103 between the combined heat exchange plates 101 are sealed.

[0044] In this embodiment, the single core sealing process is carried out by hot-melt sealing the top of the heat exchange plate 101 and providing sealing strips 102 at the windward end and the leeward end of the wet channel formed by adjacent heat exchange plates 101, and sealing between the sealing strip 102 and the end surface of the wet channel, and finally the sealing strip 102 and the frame 103 between the combined heat exchange plates 101 are sealed, thereby ensuring that the indirect evaporation core 100 can have good sealing performance. At the same time, since the sealing strip 102 can effectively improve its strength, the performance can be more stable, and the dry and wet channels will not have cross-wind and water leakage, thereby improving the evaporation efficiency.

[0045] According to an embodiment provided by the present invention, Figure 1 and Figure 2 As shown, in step 1, the top of the heat exchange plate 101 is melted together at its edges by heat fusion to form a sealed edge 105 .

[0046] In this embodiment, the dry channel is composed of a whole heat exchange plate 101 provided with a microchannel 104. Special equipment is used to seal the top of the heat exchange plate 101 using hot melt technology, so that the edges of the heat exchange plate 101 are hot-melted together and firmly welded to ensure that it has good sealing properties and will not crack during use, thereby avoiding the problem of insufficient sealing due to the use of colloid.

[0047] Among them, the hot melt technology and equipment used in this embodiment are all existing technologies, so they will not be described in detail here.

[0048] According to an embodiment provided by the present invention, Figure 1 and Figure 2 As shown, the edge seal 105 is triangular in shape.

[0049] In this embodiment, the edge seal 105 is triangular in shape, that is, the side section of the entire edge seal 105 is triangular and is firmly welded. The triangular edge seal 105 can not only reduce wind resistance, but also have good water conductivity, which can effectively improve the stability of the indirect evaporation core 100.

[0050] Optionally, the side cross-section of the edge seal 105 includes but is not limited to a triangle, which does not deviate from the design concept of the present invention and should fall within the protection scope of the present invention.

[0051] According to an embodiment provided by the present invention, Figure 1 and Figure 3 As shown, in step 2, the distance between the sealing strip 102 and the end surface of the heat exchange plate 101 is 5-12 mm.

[0052] In this embodiment, two sealing strips 102 are placed between each two adjacent heat exchange plates 101 along the wet channel direction, and sealing strips 102 are provided at the windward end and the leeward end of the wet channel, wherein the distance between the sealing strip 102 and the end surface of the heat exchange plate 101 is in the range of 5-12 mm.

[0053] Among them, preferably, the thickness range of the sealing strip 102 is set within 2-12 mm, and the distance between the sealing strip 102 and the end face of the heat exchange plate 101 is set to 10 mm, so as to ensure that the sealed indirect evaporation core 100 has sufficient internal strength to prevent deformation and cracks, and prevent wind leakage in the dry and wet channels and water leakage in the wet channels.

[0054] According to an embodiment provided by the present invention, Figure 1 and Figure 4 As shown, a filling groove 106 is formed between the side wall of the sealing strip 102 and the end surface of the heat exchange plate 101, and hot melt adhesive is used to fill the filling groove 106 to complete the sealing.

[0055] In this embodiment, a filling groove 106 is formed between the side wall of the sealing strip 102 and the end surface of the heat exchange plate 101, and hot melt adhesive is used to fill the entire sealing groove. Since hot melt adhesive is resistant to high and low temperatures and has good strength, the overall strength and sealing of the indirect evaporation core 100 can be ensured after sealing with hot melt adhesive.

[0056] According to an embodiment provided by the present invention, Figure 1 and Figure 5 As shown, in step 3, along the direction of the dry channel, an accommodating cavity 107 is formed between the frame 103 and the heat exchange plate 101, and the dry channel in the accommodating cavity 107 is blocked using a blocking member 200.

[0057] In this embodiment, an accommodating cavity 107 is reserved between the frame 103 and the heat exchange plate 101 along the dry channel direction, and the dry channel in the accommodating cavity 107 is blocked by a blocking member 200 to prevent air leakage.

[0058] Preferably, since the heat exchange plate 101 is made of polymer material and the frame 103 is made of galvanized sheet material, ordinary glue is difficult to bond, so hot melt glue plus butyl glue must be used for sealing.

[0059] like Figure 5 As shown, the heat exchange plate 101 and the frame 103 may have tolerances during production, and each contact surface may have a joint 111. The joints 111 are filled with hot melt adhesive. Figure 6 As shown, single-sided butyl tape 113 is pasted on the end surfaces of the indirect evaporation core 100 and the joints 111 between the heat exchange plate 101 and the frame 103 to form a pasting area 112 to ensure that no water or air leakage occurs at the joints 111.

[0060] According to an embodiment provided by the present invention, Figure 1 and Figure 5 As shown, a plurality of glue holes 300 are provided on the frame 103 , and the glue holes 300 are connected to the accommodating cavity 107 . The glue holes 300 are used to inject glue into the accommodating cavity 107 .

[0061] In this embodiment, a plurality of glue holes 300 are provided on the frame 103, and each glue hole 300 is directly connected to the accommodating cavity 107. Hot melt glue is injected into the accommodating cavity 107 through the glue hole 300 until the hot melt glue overflows the glue hole 300, thereby ensuring the sealing effect, so as to effectively improve the evaporation efficiency of the indirect evaporation core 100.

[0062] like Figures 7 to 11 As shown, the present invention also provides a multi-core combined sealing process for sealing multiple indirect evaporation cores 100, including the above-mentioned single-core sealing process, multiple indirect evaporation cores 100 are arranged side by side after sealing, and two opposite end faces are circumferentially affixed with double-sided butyl tape 400, and the indirect evaporation core 100 is provided with a fixing plate 500 at the top end of the double-sided butyl tape 400, and two adjacent fixing plates 500 are fixed by bolts.

[0063] In this embodiment, a plurality of indirect evaporation cores 100 sealed by the above-mentioned single-core sealing process are arranged side by side, and fixing plates 500 are respectively installed on the end faces of two opposite indirect evaporation cores 100, and double-sided butyl tape 400 is affixed to the end faces along the circumference, and adjacent fixing plates 500 are locked and fixed by bolts.

[0064] Among them, optionally, screws, rivets or other fixing parts can also be used to fix the fixing plate 500, and the purpose thereof does not deviate from the design concept of the present invention and should fall within the protection scope of the present invention.

[0065] In order to better seal within the unit, the width of a single core does not exceed 600 mm, which is convenient for assembling the core.

[0066] According to an embodiment provided by the present invention, Figure 8 and Fig. 9 As shown, structural adhesive is used to seal between the bolts and the connecting plate.

[0067] In this embodiment, after two adjacent indirect evaporation cores 100 are locked and fixed with bolts, structural adhesive is used to fully seal the space between the bolts and the connecting plates to ensure that no gaps are left. At the same time, single-sided butyl tape 113 is used to seal the gaps between the connecting plates on the water-spraying surface of the indirect evaporation core 100.

[0068] According to an embodiment provided by the present invention, Fig.10 and Fig.11 As shown, a water receiving tray 108 is provided below the connector on the water surface side of the wet channel of the sealed indirect evaporation core 100 , and the water receiving tray 108 is connected to a water tank 109 . A water receiving tank 110 is provided on the spraying surface of the indirect evaporation core 100 .

[0069] In this embodiment, if Fig.10 As shown, a water receiving tray 108 is installed under the frame 103 on the water surface side of the wet channel of the indirect evaporation core 100, and a water tank 109 is welded on one side of the water receiving tray 108 to prevent dripping water from falling into the unit. Fig.11 As shown, a water receiving box 110 is installed on the spraying surface of the indirect evaporation core 100 to collect the sprayed water and prevent water from leaking from the secondary surface.

[0070] Among them, preferably, double-sided butyl tape 400 is required to be affixed to the places where the water receiving box 110 contacts the frame 103, and structural adhesive is applied to fill the gap. After the structural adhesive solidifies, a layer of single-sided butyl tape 113 is affixed to ensure that no water leaks out and the evaporation efficiency of the indirect evaporation core 100 is ensured.

[0071] In the drawings of the present invention, it should be noted that the arrows in the drawings are airflow directions or water-facing directions, that is, dry channel airflow directions and wet channel airflow directions.

[0072] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A single core sealing process, used for sealing an indirect evaporation core (100), wherein the indirect evaporation core (100) comprises a heat exchange plate (101), a sealing strip (102) and a frame (103), characterized in that: The steps include: Step 1, the heat exchange plate (101) is provided with a microchannel (104) and forms a dry channel, and the top of the heat exchange plate (101) is hot-melt sealed; Step 2, adjacent heat exchange plates (101) form a wet channel, the windward end and the leeward end of the wet channel are both provided with the sealing strip (102), and the sealing strip (102) is sealed with the end surface of the wet channel; Step 3: sealing the sealing strip (102) and the frame (103) between the combined heat exchange plates (101).

2. The single core sealing process according to claim 1, characterized in that: In the step 1, the top of the heat exchange plate (101) is melted together at its edges by heat fusion to form a sealed edge (105).

3. The single core sealing process according to claim 2, characterized in that: The edge sealing (105) is triangular in shape.

4. The single core sealing process according to claim 1, characterized in that: In the step 2, the distance between the sealing strip (102) and the end surface of the heat exchange plate (101) is 5-12 mm.

5. The single core sealing process according to claim 4, characterized in that: A filling groove (106) is formed between the side wall of the sealing strip (102) and the end surface of the heat exchange plate (101), and hot melt adhesive is used to fill the filling groove (106) to complete the sealing.

6. The single core sealing process according to claim 1, characterized in that: In the step 3, along the direction of the dry channel, an accommodating cavity (107) is formed between the frame (103) and the heat exchange plate (101), and the dry channel located in the accommodating cavity (107) is blocked using a blocking piece (200).

7. The single core sealing process according to claim 6, characterized in that: A plurality of glue holes (300) are provided on the frame (103), the glue holes (300) are in communication with the accommodating cavity (107), and the glue holes (300) are used to inject glue into the accommodating cavity (107).

8. A multi-core combined sealing process, used for sealing a plurality of indirect evaporation cores (100), characterized in that: The invention comprises the single core sealing process as described in any one of claims 1 to 7, wherein a plurality of the indirect evaporation cores (100) are arranged side by side after being sealed, and two opposite end surfaces are circumferentially affixed with double-sided butyl tape (400), and a fixing plate (500) is provided at the top end of the indirect evaporation core (100) on which the double-sided butyl tape (400) is affixed, and two adjacent fixing plates (500) are fixed by bolts.

9. A multi-core combined sealing process according to claim 8, characterized in that: The bolts and the connecting plate are sealed with structural adhesive.

10. A multi-core combined sealing process according to claim 8, characterized in that: A water receiving tray (108) is provided below the connecting piece on the lower water surface side of the wet channel of the sealed indirect evaporation core (100), the water receiving tray (108) is connected to a water tank (109), and a water receiving tank (110) is provided on the spraying surface of the indirect evaporation core (100).

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