Electric heater mounting assembly, electric heater, and air conditioner having the same

Abstract

The present application provides an electric heater mounting assembly, an electric heater, and an air conditioner equipped therewith. The mounting assembly includes a mounting structure having a drawer structure that can be movably mounted within an installation space to move the electric heater in and out of the installation space. The drawer structure includes a plate body that forms the bottom plate of the drawer structure. The edges of the plate body have folded edges that form the sides of the drawer. The electric heater mounting assembly of the present application saves installation space.

Description

Technical Field

[0001] The present application belongs to the technical field of air conditioning, and in particular relates to an electric heater mounting assembly, an electric heater, and an air conditioner having the same. Background Art

[0002] At present, the electric heaters used in air conditioners or other appliances using auxiliary electric heating are mostly composed of electric heating elements, brackets, temperature limiters, fuses, power cords, etc. However, the existing dozens of high-power electric heater structures require a large space and take up a lot of space.

[0003] Therefore, how to provide an electric heater installation assembly that saves installation space, an electric heater, and an air conditioner having the same has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present application is to provide an electric heater mounting assembly, an electric heater and an air conditioner having the same, so as to save installation space.

[0005] In order to solve the above problems, the present application provides an electric heater mounting assembly, comprising:

[0006] The installation structure has a drawer structure, which can be movably installed in the installation space to drive the electric heater in and out of the installation space; the drawer structure includes a plate body, which forms the bottom plate of the drawer structure; the edge of the plate body has a folded edge, which forms the side of the drawer.

[0007] Furthermore, the folding edge includes a first folding edge, a second folding edge and a third folding edge, the extension directions of the first folding edge and the second folding edge are parallel to each other, the extension direction of the third folding edge is perpendicular to the extension directions of the first folding edge and the second folding edge, and there is a gap between the third folding edge and the first folding edge; there is a gap between the third folding edge and the second folding edge.

[0008] Furthermore, the electric heater mounting assembly also includes a fixing structure, the electric heater is arranged on the fixing structure, and the fixing structure is connected to the mounting structure.

[0009] Furthermore, the fixing structure includes a fixing plate, which is provided with a mounting hole; the electric heater includes an electric heating tube, which is provided in the mounting hole.

[0010] Furthermore, the drawer structure includes a first drawer structure and a second drawer structure arranged on the fixed plate, the first drawer structure and the second drawer structure are arranged opposite to each other, and the electric heating tube is located between the first drawer and the second drawer.

[0011] Furthermore, the fixed structure also includes a fixed heat-conducting structure, which is simultaneously connected to the first drawer structure and the second drawer structure; the electric heating tube includes at least two groups of tube groups, the fixed heat-conducting structure is arranged between two adjacent groups of tube groups, and the fixed heat-conducting structure is simultaneously connected to the two adjacent groups of tube groups.

[0012] Furthermore, the electric heating tube includes a U-shaped tube; the number of the mounting holes is set to be multiple; the two ends of the U-shaped tube are arranged in a one-to-one correspondence in the mounting holes;

[0013] And / or, a heat dissipation structure is provided on the outer peripheral wall of the electric heating tube.

[0014] Furthermore, when a heat dissipation structure is provided on the outer peripheral wall of the electric heating tube, the heat dissipation structure is a heat dissipation fin;

[0015] and / or, when a heat dissipation structure is provided on the outer peripheral wall of the electric heating tube, the heat dissipation structure extends in a spiral shape around the outer peripheral wall of the electric heating tube;

[0016] And / or, when a heat dissipation structure is provided on the outer peripheral wall of the electric heating tube, the surface of the heat dissipation structure is uneven;

[0017] And / or, when a heat dissipation structure is provided on the outer peripheral wall of the electric heating tube, the heat dissipation structure is made of metal material.

[0018] Furthermore, when the electric heating tube includes a U-shaped tube, the U-shaped tube includes a first straight tube, a curved tube and a second straight tube connected in sequence, and the first straight tube and the second straight tube are arranged in parallel; the fixed structure also includes a fixed frame, which is arranged between the first straight tube and the second straight tube, and the fixed frame is connected to the first drawer and the second drawer at the same time; the fixed frame fixes the first straight tube; and the fixed heat-conducting structure fixes the second straight tube.

[0019] Furthermore, the electric heater also includes a fuse; the electric heater installation assembly also includes a box body, which has an outlet, the fuse is arranged inside the box body, the lead wire of the fuse is led out through the outlet, and a first sealing structure is provided between the lead wire and the outlet.

[0020] Furthermore, the electric heater mounting assembly also includes a second sealing structure, which is sealed and arranged at the crimping position between the lead wire of the electric heating tube and the electric heating tube.

[0021] According to another aspect of the present application, an electric heater is provided, including an electric heater mounting assembly, which is the above-mentioned electric heater mounting assembly.

[0022] According to another aspect of the present application, an air conditioner is provided, comprising an electric heater mounting assembly, wherein the electric heater mounting assembly is the above-mentioned electric heater mounting assembly.

[0023] The electric heater installation assembly, electric heater, and air conditioner provided by the present application use a drawer structure to install the electric heater in the installation space, which can effectively save installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of an electric heater installation assembly according to an embodiment of the present application;

[0025] Figure 2 This is a schematic structural diagram of an electric heater installation assembly according to an embodiment of the present application;

[0026] Figure 3 This is a schematic structural diagram of an electric heating tube according to an embodiment of the present application;

[0027] Figure 4 This is a schematic structural diagram of the box body according to an embodiment of the present application;

[0028] Figure 5 This is a schematic diagram of the structure of the lead wire and the electric heating tube of an embodiment of the present application;

[0029] Figure 6 This is a simulation diagram of an embodiment of the present application without adopting the fixed heat-conducting structure of the present application;

[0030] Figure 7 This is a simulation diagram of an embodiment of the present application using the fixed heat-conducting structure of the present application.

[0031] The reference numerals indicate:

[0032] 1. Drawer structure; 11. Plate body; 12. Folding edge; 2. Electric heating tube; 21. Heat dissipation structure; 31. Fixed plate; 32. Fixed heat-conducting structure; 33. Fixed frame; 34. Tube clamp; 4. Box body; 41. Wire outlet; 5. Lead wire of electric heating tube; 51. Second sealing structure. DETAILED DESCRIPTION

[0033] See also Figure 1-7As shown, an electric heater installation assembly includes a mounting structure, the mounting structure having a drawer structure 1, the drawer structure 1 can be movably installed in the installation space to drive the electric heater in and out of the installation space; the drawer structure 1 includes a plate body 11, the plate body 11 forms the bottom plate of the drawer structure 1; the edge of the plate body 11 has a folded edge 12, the folded edge 12 forms the side of the drawer, and the folded edge 12 cooperates with the internal structure of the installation space to slide in and out of the installation space, the structure is simple, saves installation space, and is easy to maintain. The drawer structure is used to drive the electric heater in and out of the installation space, the electric heater can be more centrally arranged on the drawer structure, and the folded edge 12 of the edge of the plate body 11 is used as the side of the drawer, the structure is simple and occupies little space, and the space of the mounting structure can be further reduced to save installation space; the installation space is a duct structure; in this application, the drawer structure 1 is used to install the electric heater in the installation space, which can effectively save installation space and solve the problem of high-power electric heaters taking up space; and the drawer structure 1 can drive the electric heater in and out of the installation space, which is convenient for maintenance.

[0034] The present application also discloses some embodiments. The present application also discloses some embodiments. The folding edge 12 includes a first folding edge 12, a second folding edge 12 and a third folding edge 12. The extension directions of the first folding edge 12 and the second folding edge 12 are parallel to each other, and the extension direction of the third folding edge 12 is perpendicular to the extension directions of the first folding edge 12 and the second folding edge 12, and there is a gap between the third folding edge 12 and the first folding edge 12; there is a gap between the third folding edge 12 and the second folding edge 12, that is, the electric heater is stuck in the air duct structure on the plate body 11 to achieve pushing and pulling, and the first folding edge 12 and the second folding edge 12 can cooperate with the internal structure of the installation space to slide out and into the installation space.

[0035] The present application also discloses some embodiments, in which the electric heater installation assembly further includes a fixed structure, on which the electric heater is arranged, and which is connected to the installation structure, so that the drawer structure 1 can drive the electric heater in and out of the installation space.

[0036] The present application also discloses some embodiments in which the fixing structure includes a fixing plate 31 with a mounting hole provided thereon; the electric heater includes an electric heating tube 2 disposed within the mounting hole. A rubber plug can be added to the through hole between the electric heating tube 2 and the fixing plate 31 to reduce friction.

[0037] The present application also discloses some embodiments, in which the drawer structure 1 includes a first drawer structure 1 and a second drawer structure 1 arranged on a fixed plate 31, the first drawer structure 1 and the second drawer structure 1 are arranged opposite to each other, and the electric heating tube 2 is located between the first drawer and the second drawer.

[0038] The present application also discloses some embodiments, in which the fixed structure further includes a fixed heat-conducting structure 32, which is connected to the first drawer structure 1 and the second drawer structure 1 at the same time; the electric heating tube 2 includes at least two tube groups, and the fixed heat-conducting structure 32 is arranged between two adjacent tube groups, and the fixed heat-conducting structure 32 is connected to the two adjacent tube groups at the same time. The fixed heat-conducting structure 32 not only enhances the stability of the electric heater, but also forms a thermal bridge when connecting the upper and lower heat sources. The electric heater is installed in the air duct. Since the wind has directionality, the heat dissipation capacity in the upper and lower air ducts is different. The thermal bridge can transfer the heat from the downstream to the upstream with better heat dissipation capacity, thereby improving the heat exchange capacity of the unit. This can be clearly seen through simulation under the conditions of the same air volume and the same heating capacity (see Figure 5 、 Figure 6 ), when the fixed heat-conducting structure 32 in the middle is used to form a heat bridge, the temperature on the surface of each electric heating tube 2 is more uniform and the temperature difference is about 50°C, while when there is no fixed heat-conducting structure 32, the temperature difference between the upper and lower parts is greater than 100°C. The heat bridge formed without this fixed heat-conducting structure 32 is not conducive to the heat transfer in the electric heater, nor is it conducive to the temperature control of the electric heater, and it will also cause the heating capacity of the unit to be insufficient. The presence of this heat bridge makes the heat in the electric heater balanced, so that the heat dissipation capacity of the electric heater is higher and the temperature control is more accurate; that is, the electric heater of the present application adopts group control, and the installation assembly of the present application can be installed with a double-layer electric heating element. The fixed heat-conducting structure 32 of the present application is set between the two groups of tubes to form a heat transfer bridge, which can make the heat dissipation effect of the electric heater better, and the temperature on the electric heater tube is relatively more uniform, which can solve the problem of insufficient heat capacity of the electric heater. In addition, the double-layer electric heating element combined with the drawer structure 1 of the present application can not only ensure the heating effect but also meet high seismic resistance. The double-layer electric heating element is set on the drawer element. While ensuring the heating effect and high seismic resistance, the installation space can also be reduced.

[0039] The present application also discloses some embodiments, in which the electric heating tube 2 includes a U-shaped tube; the number of mounting holes is set to multiple; and both ends of the U-shaped tube are arranged in a one-to-one correspondence in the mounting holes.

[0040] The present application also discloses some embodiments, in which a heat dissipation structure 21 is provided on the outer peripheral wall of the electric heating tube 2. The heat dissipation structure 21 can be made of metal or other heat-conducting materials, which can improve the heat transfer coefficient and increase the heat dissipation area.

[0041] The present application also discloses some embodiments. When a heat dissipation structure 21 is provided on the outer peripheral wall of the electric heating tube 2, the heat dissipation structure 21 is a heat dissipation fin; the heat dissipation fin can be a plurality of individual fins evenly or unevenly provided on the outer surface of the electric heating tube 2, or can be a strip-shaped fin extending on the outer surface of the electric heating tube 2, such as a linear extension or a curved extension. For example, the electric heating tube 2 of the present application can be a U-shaped electric heating tube 2 with metal fins.

[0042] This application also discloses certain embodiments in which a heat dissipation structure 21 is provided on the outer wall of the electric heating tube 2. The heat dissipation structure 21 extends spirally around the outer wall of the electric heating tube, further enhancing the heat dissipation effect. This spiral arrangement can increase the turbulence intensity of the wind field, increase the heat dissipation area of ​​the electric heater, and thus improve heat dissipation efficiency.

[0043] The present application also discloses some embodiments. When a heat dissipation structure 21 is provided on the outer peripheral wall of the electric heating tube 2, the heat dissipation structure 21 is made of metal material. Metal material has better thermal conductivity, and the raw materials are easy to obtain and cheap. The present application can design a U-shaped electric heating tube 2 with metal fins. The metal fins use corrugated metal sheets, which are spirally and evenly wound on the electric heating tube 2 (the spacing between the fins is 4.5 to 5.5 mm, and the fin height is 5 to 7 mm). The corrugated sheets can enhance convection and improve the heat transfer coefficient. The spiral arrangement can increase the turbulence intensity of the wind field, increase the heat dissipation area of ​​the electric heater, and thus increase the heat dissipation efficiency.

[0044] The present application also discloses some embodiments, in which when a heat dissipation structure 21 is provided on the outer peripheral wall of the electric heating tube 2, the surface of the heat dissipation structure 21 is uneven; for example, the heat dissipation structure 21 is a strip-shaped heat dissipation fin, and the surface of the heat dissipation fin is uneven, for example, wavy, and the strip-shaped heat dissipation fin extends in a spiral shape around the outer peripheral wall of the electric heating tube, which can increase the heat dissipation area and improve the heat dissipation effect.

[0045] The present application also discloses some embodiments. When the electric heating tube 2 includes a U-shaped tube, the U-shaped tube includes a first straight tube, a curved tube, and a second straight tube connected in sequence, and the first straight tube and the second straight tube are arranged in parallel; the fixed structure also includes a fixing frame 33, which is arranged between the first straight tube and the second straight tube, and the fixing frame 33 is connected to the first drawer and the second drawer at the same time; the fixing frame 33 fixes the first straight tube; and the fixed heat-conducting structure 32 fixes the second straight tube. That is, at least two groups of U-shaped tubes are arranged, each group of tubes includes at least two U-shaped tubes, and at least two groups of tubes are arranged in sequence in the first direction; at least two U-shaped tubes in each group of tubes are arranged in sequence in the second direction; when two groups of U-shaped tubes are arranged, at least two U-shaped tubes in each group of tubes are arranged side by side, and the two groups of tubes are two rows of U-shaped tubes. The installation assembly of the present application includes a component fixing plate 31, an electric heating element fixing frame 33, a plate body 11 and a pipe clamp 34, etc. The fixing frame 33 is set between the first straight tube and the second straight tube, and the first straight tube is fixed to the fixing frame 33 by the pipe clamp 34. The U-shaped tubes in the two groups of tubes at corresponding positions are simultaneously fixed to the fixed heat-conducting structure 32 by the pipe clamp 34. The electric heater installation assembly of the present application can be made larger or smaller according to different requirements for the length of the electric heating element, and can also be made into various forms according to different unit structures (such as three-layer, four-layer, etc.). It can also be made into various groups of electric heaters according to the heating capacity requirements of the unit.

[0046] The present application also discloses some embodiments, wherein the electric heater further includes a fuse; the electric heater mounting assembly further includes a box body 4 having a wire outlet 41. The fuse is disposed within the box body 4, and the lead wires of the fuse are led out through the wire outlet 41. A first sealing structure is provided between the lead wires and the wire outlet 41. The box body 4 is a thermostat box, and the fuse is fixed within the box body 4. The lead wires are led out through the two wire outlets 41 of the thermostat box. After the lead wires are led out, a sealant is applied to the wire outlets 41 to form a first sealing structure, thereby achieving a high seal against moisture and dust, and thus explosion-proofing. Compared with the existing technology, the fuse used in large air-conditioning units is fixed to the electric heater sheet metal by a bracket, and the fuse is welded to the bracket, and the spot welding points and the connecting screws are exposed to the outside; that is, a thermostat box is designed on the component fixing plate 31, fixed to the sheet metal with screws, the fuse is placed inside the thermostat box, and two leads are led out from the two wire outlet holes of the thermostat shell. In order to make the temperature detection more accurate, it is necessary to drill a hole in the sheet metal so that the fuse is closer to the heat source to avoid temperature differences caused by temperature sensing through the sheet metal. And after the wiring is led out, sealant is applied to ensure that it can be waterproof and dustproof. This application can solve the problem that existing electric heaters are not moisture-proof. It can solve the problem that existing electric heaters are prone to explosion when used under harsh conditions such as high dust.

[0047] The present application also discloses some embodiments, wherein the electric heater mounting assembly further comprises a second sealing structure 51, which is provided to seal the position where the lead wire 5 of the electric heating tube and the electric heating tube 2 are crimped. For example, a sealant is applied to the crimping position, or a silicone rubber seal with two ends tightened is used to crimp the lead wire to the electric heating element. After the lead wire of the electric heating element is crimped to the electric heating element, a silicone rubber seal is applied to the lead wire. The seal is completely wrapped from the through hole of the right frame to the lead wire crimping position, thereby ensuring that the crimping between the electric heating element and the lead wire is waterproof and dustproof. Compared with the prior art, the electric heating tube 2 outlet uses a round head connector directly on the electric heating tube 2, and the connector is exposed to the outside; the present application enables the electric heater to be safely used in water and in harsh environments such as high humidity and high dust, greatly improving the heat exchange performance of the electric heater, and greatly improving the safety and stability of use. At the same time, it can meet the needs of various working conditions and reduce the space requirement in the structure.

[0048] This application designs a drawer-type assembly that can fix a double-layer electric heating tube 2. It consists of a frame plate, a component mounting plate, an electric heating tube 2 fixing frame 33, a pipe clamp 34, etc. The U-shaped electric heating element is inserted into the through hole of the mounting plate, and then fixed to the electric heating element fixing plate 31 using the pipe clamp 34. The frames on both sides are fixed with screws. Finally, the components are installed. Rubber plugs can be added to the through holes of the electric heating tube 2 and the mounting plate to reduce friction. The frame plate uses a method of leaving a missing folded edge 12 to allow the electric heater to be stuck in the air duct structure and then pushed and pulled, making it easy to maintain.

[0049] The installation arrangement of the electric heating tubes 2 should be tilted at a 45° angle, and each electric heating tube 2 should be staggered to ensure that each electric heating tube 2 is not blocked by each other in the wind farm, which is convenient for installation and heat dissipation. Six electric heating tube 2 fixing brackets 33 are designed, and the upper and lower four are fixed on one side (three electric heating tubes 2 can be fixed at the same time). Two brackets are used for each tube, and the distance from the fixed position to the head end and the tail end is consistent; two brackets with double-sided fixation are used in the middle. Similarly, each tube is fixed twice, and the fixed position is in the two fixed positions on the outside. They are not blocked by each other, which is convenient for installation and heat dissipation. This design enhances the stability of the electric heating tubes 2 and can be used for units with relatively high impact and seismic requirements.

[0050] According to an embodiment of the present application, an electric heater is provided, including an electric heater mounting assembly, wherein the electric heater mounting assembly is the above-mentioned electric heater mounting assembly. After being treated to be moisture-proof and dust-proof, the electric heater mounting assembly of the present application can be used in locations with relatively harsh working conditions and high safety requirements, thereby improving the product safety factor, reducing after-sales failures, improving the heat transfer coefficient of the electric heater, and saving installation space.

[0051] According to an embodiment of the present application, an air conditioner is provided, comprising an electric heater mounting assembly, wherein the electric heater mounting assembly is the above-mentioned electric heater mounting assembly.

[0052] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0053] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application. The above are merely preferred embodiments of the present application. It should be noted that those skilled in the art may make various improvements and variations without departing from the technical principles of the present application, and such improvements and variations shall also be considered within the scope of protection of the present application.

Claims

1. An electric heater mounting assembly, characterized in that: include: The mounting structure comprises a drawer structure (1), wherein the drawer structure (1) can be movably mounted in the mounting space to drive the electric heater in and out of the mounting space; the drawer structure (1) comprises a plate body (11), wherein the plate body (11) forms the bottom plate of the drawer structure (1); the edge of the plate body (11) comprises a folded edge (12), wherein the folded edge (12) forms the side edge of the drawer; The electric heater mounting assembly further comprises a fixing structure, the electric heater is arranged on the fixing structure, and the fixing structure is connected to the mounting structure; the fixing structure comprises a fixing plate (31); The electric heater includes an electric heating tube (2), the drawer structure (1) includes a first drawer structure and a second drawer structure arranged on the fixed plate (31), the first drawer structure and the second drawer structure are arranged opposite to each other, and the electric heating tube (2) is located between the first drawer and the second drawer; The fixed structure also includes a fixed heat-conducting structure (32), and the fixed heat-conducting structure (32) is simultaneously connected to the first drawer structure and the second drawer structure; the electric heating tube (2) includes at least two groups of tube groups, the fixed heat-conducting structure (32) is arranged between two adjacent groups of the tube groups, and the fixed heat-conducting structure (32) is simultaneously connected to the two adjacent groups of the tube groups.

2. The electric heater mounting assembly according to claim 1, characterized in that: The folding edge (12) includes a first folding edge, a second folding edge and a third folding edge, the extension directions of the first folding edge and the second folding edge are parallel to each other, the extension direction of the third folding edge is perpendicular to the extension directions of the first folding edge and the second folding edge, and there is a gap between the third folding edge and the first folding edge; there is a gap between the third folding edge and the second folding edge.

3. The electric heater mounting assembly according to claim 1, characterized in that: The fixing plate (31) is provided with a mounting hole; the electric heating tube (2) is arranged in the mounting hole.

4. The electric heater mounting assembly according to claim 3, characterized in that: The electric heating tube (2) comprises a U-shaped tube; the number of the mounting holes is set to be multiple; the two ends of the U-shaped tube are arranged in the mounting holes in a one-to-one correspondence; And / or, a heat dissipation structure (21) is provided on the outer peripheral wall of the electric heating tube (2).

5. The electric heater mounting assembly according to claim 4, characterized in that: When a heat dissipation structure (21) is provided on the outer peripheral wall of the electric heating tube (2), the heat dissipation structure (21) is a heat dissipation fin; And / or, when a heat dissipation structure (21) is provided on the outer peripheral wall of the electric heating tube (2), the heat dissipation structure (21) extends in a spiral shape around the outer peripheral wall of the electric heating tube (2); And / or, when a heat dissipation structure (21) is provided on the outer peripheral wall of the electric heating tube (2), the surface of the heat dissipation structure (21) is uneven; And / or, when a heat dissipation structure (21) is provided on the outer peripheral wall of the electric heating tube (2), the heat dissipation structure (21) is made of metal material.

6. The electric heater mounting assembly according to claim 4, characterized in that: When the electric heating tube (2) includes a U-shaped tube, the U-shaped tube includes a first straight tube, a curved tube, and a second straight tube that are connected in sequence, and the first straight tube and the second straight tube are arranged in parallel; the fixed structure also includes a fixing frame (33), the fixing frame (33) is arranged between the first straight tube and the second straight tube, and the fixing frame (33) is connected to the first drawer and the second drawer at the same time; the fixing frame (33) fixes the first straight tube; and the fixed heat-conducting structure (32) fixes the second straight tube.

7. The electric heater mounting assembly according to claim 1, characterized in that: The electric heater further comprises a fuse; the electric heater mounting assembly further comprises a box body (4), the box body (4) having a wire outlet (41), the fuse being arranged inside the box body (4), a lead wire of the fuse being led out through the wire outlet (41), and a first sealing structure being arranged between the lead wire and the wire outlet (41).

8. The electric heater mounting assembly according to claim 3, characterized in that: The electric heater mounting assembly further comprises a second sealing structure (51), which is sealingly arranged at a crimping position between the lead-out wire (5) of the electric heating tube and the electric heating tube (2).

9. An electric heater, comprising an electric heater mounting assembly, characterized in that: The electric heater mounting assembly is the electric heater mounting assembly according to any one of claims 1 to 8.

10. An air conditioner comprising an electric heater mounting assembly, characterized in that: The electric heater mounting assembly is the electric heater mounting assembly according to any one of claims 1 to 8.

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