Ptc heater device and air conditioner

Abstract

The application belongs to the technical field of PTC heater for air conditioner, and discloses a PTC heater device and an air conditioner. The PTC heater device comprises two guide rails, a clamping groove structure and a heating assembly. The guide rails are fixed to first end plates and second end plates on the coil pipe. The clamping groove structure is fixed to the second end plate, and a notch is formed in the clamping groove structure. The heating assembly comprises a heating body and a mounting frame, and the heating body is arranged on the mounting frame. The mounting frame comprises a first end and a second end, and the second end is provided with a folded ear. When the heating assembly is installed, the mounting frame can be slid into the guide rail. The second end is pressed against the clamping groove structure to deform the clamping groove structure so that the clamping groove structure is inserted into the notch and clamped to the clamping groove structure, and the first end is fixed to the first end plate. The above PTC heater device is convenient to disassemble and assemble, simple to maintain and low in labor cost. The above air conditioner comprises the coil pipe and the above PTC heater device, and is simple to maintain and low in labor cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air-conditioning PTC heater, in particular to a PTC heater device and air conditioner. BACKGROUND

[0002] PTC (Positive Temperature Coefficient) means positive temperature coefficient, which refers to a semiconductor material or component with a large positive temperature coefficient. Usually, we refer to PTC as PTC thermistor, which is a typical semiconductor resistor with temperature sensitivity. When the temperature exceeds a certain temperature (Curie temperature), the resistance value of the PTC thermistor increases sharply with the increase of temperature. The PTC heater adopts PTCR thermistor element, which is composed of several single chips combined with corrugated aluminum strips through high-temperature adhesive bonding. It has the advantages of small thermal resistance and high heat exchange efficiency. Its biggest feature is safety. When the fan fails to rotate, the power of the PTC heater will automatically decrease sharply because it cannot be fully cooled. At this time, the surface temperature of the heater is maintained at around Curie temperature (usually 220℃), so that the "red" phenomenon of the surface of the electric heating tube heater does not occur, and the hidden danger of accidents is eliminated. Therefore, the PTC heater is widely used in the technical field of heat exchange equipment such as air conditioner.

[0003] However, in the prior art, when the PTC heater needs to be disassembled from the air conditioner and other machines, the operator is not convenient to disassemble and assemble the PTC heater due to the limited space of the machine, especially the fixed end inside the machine, which leads to the difficulty of maintenance of the PTC heater and increases the labor cost.

[0004] Therefore, it is urgent to provide a PTC heater device and air conditioner to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a PTC heater device which is convenient to disassemble and assemble, easy to maintain and low in labor cost.

[0006] To achieve this purpose, the present application adopts the following technical scheme:

[0007] A PTC heater device, comprising:

[0008] Two guide rails are arranged at intervals, and the two ends of each guide rail are fixedly connected to the first end plate and the second end plate at the two ends of the coil along the first direction;

[0009] A clamping groove structure is fixed to the second end plate, and a slot is formed in the clamping groove structure;

[0010] The heating assembly comprises a heating body and a mounting frame, the heating body is arranged on the mounting frame, the mounting frame comprises a first end and a second end along the first direction, the second end is outwardly provided with a folded lug, when the heating assembly is installed, the mounting frame can be slid into the guide rail along the first direction, the second end extrudes the clamping groove structure to deform the clamping groove structure to pass through the slot and be clamped in the clamping groove structure, and the first end is fixed to the first end plate.

[0011] As an optional technical scheme of the PTC heater device, the second end is provided with a plurality of folded lugs at intervals, and a plurality of corresponding slots are formed in the clamping groove structure.

[0012] As an optional technical scheme of the PTC heater device, the clamping groove structure comprises a web extending along the second direction and flanges located on both sides of the web, one side of the flange is connected with the second end plate, and the slot is located on the other side of the flange, when the heating assembly is installed, the folded lug extrudes the flange from the inside to the outside of the flange, so that the two flanges are away from each other, the folded lug passes through the slot and is clamped in the clamping groove structure.

[0013] As an optional technical scheme of the PTC heater device, the flange is parallel to the plane where the first direction and the second direction are located, and the angle between the folded lug and the plane where the first direction and the second direction are located is 35-45 degrees.

[0014] As an optional technical scheme of the PTC heater device, the second end is a beam structure with a Z-shaped cross section, the end faces of the leading end and the trailing end of the beam structure are parallel to the plane where the first direction and the second direction are located, and the folded lug is located at the trailing end of the beam structure.

[0015] As an optional technical scheme of the PTC heater device, a flange is arranged on the flange where the slot is located, and the flange abuts against the trailing end of the beam structure.

[0016] As an optional technical scheme of the PTC heater device, the angle between the flange and the adjacent flange is 45-50 degrees.

[0017] As an optional technical scheme of the PTC heater device, the flange is bolted with the second end plate, and an avoiding notch is arranged on the flange where the slot is located.

[0018] As an optional technical scheme of the PTC heater device, the avoiding notch is communicated with the slot.

[0019] Another object of the present application is to provide an air conditioner which is simple to maintain and low in labor cost.

[0020] To achieve the above object, the present application adopts the following technical solutions:

[0021] An air conditioner comprises a coil pipe and the PTC heater device.

[0022] The present application has the following advantages:

[0023] The PTC heater device comprises two guide rails, a clamping groove structure and a heating assembly. The guide rails are fixed to first and second end plates on the coil pipe. The clamping groove structure is fixed to the second end plate, and a notch is formed in the clamping groove structure. The heating assembly comprises a heating body and a mounting frame. The heating body is arranged on the mounting frame. The mounting frame comprises a first end and a second end. The second end is provided with a folded ear. When the heating assembly is installed, the mounting frame can be slid into the guide rail, and the installation is labor-saving. The second end is pressed against the clamping groove structure to deform the clamping groove structure, so that the notch is enlarged, the folded ear can be inserted into the notch and clamped in the clamping groove structure, and then the first end is fixed to the first end plate to complete the installation of the heating assembly. Compared with the prior art, the PTC heater device does not need the operator to reach into the machine to fix the inner end side during installation. The mounting frame can be clamped with the clamping groove structure only by pushing the mounting frame into the guide rail, and the installation is simple. When the heating assembly is disassembled, the first end is fixed to the first end plate, the mounting frame is pulled out along the slide rail, and the folded ear is disengaged from the notch, and then the mounting frame is pulled out along the slide rail to complete the disassembly of the heating assembly. Therefore, the PTC heater device is convenient to disassemble and maintain, and the labor cost is reduced.

[0024] The air conditioner comprises a coil pipe and the PTC heater device, and is simple to maintain and low in labor cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of the PTC heater device provided by the embodiment of the present application;

[0026] Figure 2 is an explosion diagram of the PTC heater device provided by the embodiment of the present application;

[0027] Figure 3 is a structural schematic diagram of the second end in the PTC heater device provided by the embodiment of the present application;

[0028] Figure 4 is a structural schematic diagram of the clamping groove structure in the PTC heater device provided by the embodiment of the present application.

[0029] In the drawings:

[0030] 100, rail; 200, clamping groove structure; 210, web; 220, flange; 230, flange; 201, notch; 202, avoiding gap; 300, heating assembly; 310, heating body; 320, mounting frame; 321, first end; 322, second end; 323, folded ear. DETAILED DESCRIPTION

[0031] The application will be further described below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are intended to be illustrative only and are not in any way limiting of the application. In addition, it should be understood that the drawings are not necessarily to scale and that, unless otherwise indicated, like components have the same reference numerals in different figures.

[0032] In the description of the application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical and oblique above of the first feature to the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical and oblique below of the first feature to the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0034] In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the application. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0035] The PTC heater device provided by the present embodiment is convenient to disassemble and assemble, easy to maintain and low in labor cost.

[0036] Specifically, as Figure 1 and Figure 2As shown, the PTC heater device includes two guide rails 100, a clamping groove structure 200, and a heating assembly 300. The two guide rails 100 are arranged at intervals, and each end of each guide rail 100 is fixedly connected to a first end plate and a second end plate at the two ends of the coil along a first direction (the A direction in the figure). The clamping groove structure 200 is fixed to the second end plate, and a slot 201 is formed in the clamping groove structure 200. The heating assembly 300 includes a heating body 310 and a mounting frame 320, and the heating body 310 is arranged on the mounting frame 320. The mounting frame 320 includes a first end 321 and a second end 322 along the first direction, and the second end 322 is outwardly provided with a folded ear 323. When the heating assembly 300 is installed, the mounting frame 320 can be slid into the guide rail 100 along the first direction, and the installation is labor-saving. The second end 322 extrudes the clamping groove structure 200 to deform the clamping groove structure 200 to pass through the slot 201 and be clamped in the clamping groove structure 200, and the first end 321 is fixed to the first end plate.

[0037] Based on the above design, when the heating assembly 300 is installed, the mounting frame 320 is first slid into the guide rail 100 along the first direction; when the second end 322 comes into contact with the clamping groove structure 200, especially when the folded ear 323 extrudes the clamping groove structure 200 to deform the clamping groove structure 200, the slot 201 becomes larger, so that the folded ear 323 can pass through the slot 201 and be clamped in the clamping groove structure 200, and then the first end 321 is fixed to the first end plate, thereby completing the installation of the heating assembly 300. Compared with the prior art, when the PTC heater device is installed, the operator does not need to put his hand into the machine to fix the inner end side, but only needs to push the mounting frame 320 into the guide rail 100 to realize the clamping connection of the mounting frame 320 and the clamping groove structure 200, so the installation is simple. When the heating assembly 300 is disassembled, only the fixing of the first end 321 and the first end plate needs to be released, the mounting frame 320 is pulled out along the guide rail, the folded ear 323 is separated from the slot 201, and then the mounting frame 320 is pulled out along the guide rail, thereby completing the disassembly of the heating assembly 300. Therefore, the PTC heater device is convenient to disassemble and maintain, thereby reducing labor costs.

[0038] It should be noted that the two guide rails 100 are provided with a baffle at one end close to the clamping groove structure 200 along the first direction, which limits the mounting frame 320.

[0039] In this embodiment, the mounting frame 320 is formed by a sheet metal.

[0040] In some embodiments, the second end 322 is provided with a plurality of folded ears 323 at intervals, a plurality of corresponding slots 201 are formed in the clamping groove structure 200, and the plurality of folded ears 323 can be clamped in the slots 201 one by one.

[0041] As Figures 1 to 4As shown, the clamping groove structure 200 includes a web 210 extending along the second direction (the B direction in the figure) and flanges 220 on both sides of the web 210, wherein the flange 220 on one side is connected with the second end plate, and the slot 201 is located on the flange 220 on the other side. When the heating assembly 300 is installed, the folded ear 323 is extruded from the inside of the flange 220 to the outside of the flange 220, so that the two flanges 220 are away from each other, the folded ear 323 passes through the slot 201 and is clamped in the clamping groove structure 200. The clamping groove structure 200 has high strength, and the folded ear 323 is extruded from the inside of the flange 220 to the outside of the flange 220, so that the opening of the two flanges 220 of the clamping groove structure 200 is enlarged, the folded ear 323 is clamped into the slot 201, and the connection strength is high.

[0042] In order to facilitate disassembly, the flange 220 is bolted with the second end 322 plate. And the flange 220 where the slot 201 is located is provided with a relief gap 202, so that the operator can disassemble the bolt from the relief gap 202.

[0043] In this embodiment, the relief gap 202 is communicated with the slot 201, which increases the relief space and also avoids that the opening area on the flange 220 is too large to affect the strength of the clamping groove structure 200.

[0044] In order to increase the clamping strength of the folded ear 323 and the clamping groove structure 200, the flange 220 is parallel to the plane where the first direction and the second direction are located, and the angle between the folded ear 323 and the plane where the first direction and the second direction are located is 35-45 degrees. Exemplarily, it can be 35 degrees, 37 degrees, 39 degrees, 41 degrees, 43 degrees or 45 degrees, etc. Here, it is not enumerated one by one, and the present application does not make specific limitation thereon.

[0045] Continuing as Figure 3 shown, the second end 322 is a beam structure with a Z-shaped cross section, the end faces of the leading end and the trailing end of the beam structure are parallel to the plane where the first direction and the second direction are located, and the folded ear 323 is located at the trailing end of the beam structure. The beam structure has high structural strength.

[0046] Further, in order to increase the structural strength of the slot 201 of the clamping groove structure 200, the flange 220 where the slot 201 is located is provided with a flange 230 extending thereon, and the flange 230 abuts against the trailing end of the beam structure.

[0047] Still further, in order to increase the connection strength of the folded ear 323 and the clamping groove structure 200, the angle between the flange 230 and the adjacent flange 220 is 45-50 degrees. Exemplarily, it can be 45 degrees, 46 degrees, 47 degrees, 48 degrees, 49 degrees or 50 degrees, etc. Here, it is not enumerated one by one, and the present application does not make specific limitation thereon.

[0048] The air conditioner provided by the embodiment comprises a coil pipe and the PTC heater device, and the PTC heater device is installed on the coil pipe. Since the PTC heater device is simple to disassemble and assemble, the air conditioner is simple to maintain and low in labor cost.

[0049] Obviously, the above embodiments of the present application are merely exemplary and are not intended to limit the embodiments of the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the claims of the present application.

Claims

1. A PTC heater device, characterized by, include: Two guide rails (100) are spaced apart, and both ends of each guide rail (100) are fixedly connected to the first end plate and the second end plate at both ends of the coil along the first direction. A slot structure (200) is fixed to the second end plate, and a slot (201) is provided on the slot structure (200); The heating assembly (300) includes a heating element (310) and a mounting frame (320). The heating element (310) is disposed on the mounting frame (320). The mounting frame (320) includes a first end (321) and a second end (322) along the first direction. The second end (322) is provided with an outwardly folded ear (323). When the heating assembly (300) is installed, the mounting frame (320) can slide into the guide rail (100) along the first direction. The second end (322) presses the slot structure (200) to deform the slot structure (200) so that it passes through the slot (201) and is locked in the slot structure (200). The first end (321) is fixed to the first end plate.

2. The PTC heater device according to claim 1, characterized in that, The second end (322) is provided with a plurality of the aforementioned folded ears (323) at intervals, and the slot structure (200) is provided with a plurality of corresponding slots (201).

3. The PTC heater device according to claim 1, characterized in that, The slot structure (200) includes a web (210) extending along a second direction and flanges (220) located on both sides of the web (210). One flange (220) is connected to the second end plate, and the slot (201) is located on the other flange (220). When the heating assembly (300) is installed, the folding ear (323) presses the flange (220) outward from the inside of the flange (220), so that the two flanges (220) are far apart from each other. The folding ear (323) passes through the slot (201) and is locked in the slot structure (200).

4. The PTC heater device according to claim 3, characterized in that, The flange (220) is parallel to the plane containing the first direction and the second direction, and the angle between the flap (323) and the plane containing the first direction and the second direction is 35 degrees to 45 degrees.

5. The PTC heater device according to claim 3, wherein The second end (322) is a beam structure with a Z-shaped cross-section. The end faces of the first and second ends of the beam structure are parallel to the planes containing the first and second directions. The folded lug (323) is located at the tail end of the beam structure.

6. The PTC heater device according to claim 5, characterized in that A flange (230) extends from the flange (220) where the slot (201) is located, and the flange (230) abuts against the tail end of the beam structure.

7. The PTC heater device according to claim 6, characterized in that The angle between the flange (230) and the adjacent flange (220) is 45-50 degrees.

8. The PTC heater device according to claim 3, characterized by The flange (220) is bolted to the second end plate, and the flange (220) where the slot (201) is located is provided with a clearance notch (202).

9. The PTC heater device according to claim 8, characterized in that The clearance notch (202) is connected to the slot (201).

10. An air conditioner characterized by comprising: It includes a coil and a PTC heater assembly as described in any one of claims 1-9, wherein the PTC heater assembly is mounted on the coil.

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