Aluminum pipe welding type PTC heater
By forming multiple parallel channels in the profile body of the miniaturized PTC water heater, and connecting the aluminum pipe joints and bent pipes through welding, the problems of poor heating stability and low production efficiency are solved, and the liquid is fully heated and efficiently produced.
Patent Information
- Application Number
- CN202421760851.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-24
AI Technical Summary
The miniaturized PTC water heater has poor heating stability at maximum power, and has low production efficiency and yield. This is mainly due to the small diameter of aluminum pipes, high requirements for expansion and deformation sealing of inner walls, and the mechanical expansion pipe method is long and has low efficiency, resulting in poor overall power consistency.
A PTC heater with aluminum pipe welded type is designed to directly form multiple parallel channels in the profile body, and connect the inlet and outlet aluminum pipe joints and bent pipes with the channels through welding, so that the liquid is fully heated through the channel, ensuring the heating stability at the maximum power, and at the same time, replacing the mechanical expansion pipe process to improve production efficiency and yield.
Through the design of aluminum pipe welded PTC heater, the liquid is fully heated in the channel, the heating stability at maximum power is ensured, and the production efficiency and yield rate are improved, avoiding the problems of low efficiency and poor fitting of mechanical expansion pipe method.
Smart Images
Figure CN222837102U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a heater, in particular to an aluminum tube welding type PTC heater. Background Art
[0002] At present, when the number of PTC heating cores of a miniaturized PTC water heater is certain, the key to achieving its maximum power lies in heat conduction. The existing method is to apply thermal conductive glue to the outer wall of the aluminum tube and use equipment to deform the aluminum tube to fit tightly to the aluminum profile, so as to eliminate air and increase power. However, the diameter of the aluminum tube of a miniaturized PTC water heater is relatively small, generally with an inner diameter of 3-5mm. It is necessary to use hydraulic pressure to expand and deform the inner wall, which has high requirements for sealing tooling and is difficult to mass produce. The existing method is to use a mechanical expansion method to extend into the tube to squeeze and deform the tube, which is time-consuming and inefficient, and some areas cannot ensure complete fit with the profile, resulting in poor overall power consistency. Utility Model Content
[0003] The utility model aims to provide an aluminum tube welding type PTC heater, and the technical problem to be solved is to improve the production efficiency and yield rate of the product, while ensuring the heating stability of the product under maximum power.
[0004] To solve the above problems, the utility model adopts the following technical solutions: an aluminum tube welded PTC heater, comprising a profile body, a plurality of parallel channels are arranged on the profile body, the channels run through the opposite ends of the profile body, and also include an inlet aluminum tube joint with a pier head, an outlet aluminum tube joint and an elbow, one end of one of the channels in all the channels is used as a liquid inlet, and one end of one of the remaining channels except the channel is used as a liquid outlet, the inlet aluminum tube joint and the outlet aluminum tube joint are welded and fixed on the liquid inlet and the liquid outlet, respectively, and the elbow is welded and fixed to the ports of the remaining channels, so that after the liquid enters the channel from the inlet aluminum tube joint, it enters another channel under the action of the elbow until the liquid finally flows through all the channels and flows out from the outlet aluminum tube joint, a slot is provided on the profile body, the slot includes two heat conducting surfaces, each heat conducting surface is opposite to at least one channel, and a PTC heating core is arranged in the slot.
[0005] Furthermore, the diameters of the two ports of the channel are larger than the diameter of the channel to form a stepped surface, and the water inlet aluminum pipe joint, the water outlet aluminum pipe joint and the elbow are tightly connected to the ports.
[0006] Furthermore, the channel is opposite to the heat conducting surface.
[0007] Furthermore, the profile body is made of aluminum alloy material.
[0008] Furthermore, the bent pipe includes a bendable hose and connectors arranged at both ends of the hose.
[0009] Compared with the prior art, the utility model directly forms a channel in the profile body, and connects the water inlet aluminum pipe joint with a pier head, the water outlet aluminum pipe joint and the elbow with the channel by welding, so that the liquid enters the channel from the water inlet aluminum pipe joint and enters the remaining channel under the conversion of the elbow, and finally flows out from the water outlet aluminum pipe joint, so that the liquid entering the channel can be fully heated, and the heating stability of the product under the maximum power can be guaranteed. Since the expansion tube process is eliminated, the production efficiency and the yield rate of the product can also be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is an external schematic diagram of embodiment 1 of the utility model.
[0011] Figure 2 It is a schematic diagram of the decomposition of Example 1 of the utility model.
[0012] Figure 3 yes Figure 1 Cross-sectional view along CC direction.
[0013] Figure 4 It is an external schematic diagram of embodiment 2 of the utility model.
[0014] Figure 5 It is a schematic diagram of the decomposition of the second embodiment of the present utility model. DETAILED DESCRIPTION
[0015] The utility model is further described in detail below with reference to the accompanying drawings and embodiments.
[0016] Example 1
[0017] like Figures 1 to 3 As shown, the utility model discloses an aluminum tube welding type PTC heater, comprising a profile body 1, an aluminum water inlet pipe joint 3 with a pier head, an aluminum water outlet pipe joint 4 and an elbow 5. The profile body 1 is made of aluminum alloy material and can ensure the heat conduction effect. A plurality of parallel channels 2 are arranged on the profile body 1. Figures 1 to 3Taking the example shown in the figure, a detailed description is given. Four parallel channels 2 are provided on the profile body 1. A slot 6 is provided between the four channels 2. The slot 6 includes two heat-conducting surfaces 7. The channels 2 are symmetrically arranged in pairs, respectively opposite to the two heat-conducting surfaces 7 of the slot 6. The channels 2 are arranged along the length direction of the profile body 1. The channels 2 pass through the opposite ends of the profile body 1. One end of one of the channels 2 in all the channels 2 serves as a liquid inlet, and one end of one of the remaining channels 2 except the channel 2 serves as a liquid outlet. The water inlet aluminum pipe joint 3 and the water outlet aluminum pipe joint 4 are respectively welded and fixed on the liquid inlet and the liquid outlet, and the elbow 5 is respectively welded and fixed to the ports of the remaining channels 2, so that after the liquid enters the channel 2 from the water inlet aluminum pipe joint 3, it enters another channel 2 under the action of the elbow 5 until the liquid finally flows through all the channels 2 and flows out from the water outlet aluminum pipe joint 4. A PTC heating core is provided in the slot 6.
[0018] like Figure 2 As shown, the liquid inlet and the liquid outlet are respectively composed of two ports arranged diagonally in pairs on one end face of the profile body, and the remaining ports are used to connect the elbow 5. The remaining two ports on the end face are connected through the elbow 5. On the other end face of the profile body, the elbow 5 is respectively connected to the two ports arranged in pairs on the upper and lower sides.
[0019] like Figure 3 As shown, the diameters of the two ports of the channel 2 are larger than the diameter of the channel 2 to form a stepped surface, and the water inlet aluminum pipe joint 3, the water outlet aluminum pipe joint 4 and the elbow 5 are tightly connected to the ports.
[0020] In the utility model, the water inlet aluminum pipe joint 3, the water outlet aluminum pipe joint 4 and the elbow 5 are all made of aluminum pipes.
[0021] Example 2
[0022] like Figure 4 and Figure 5 As shown, the difference between Example 2 and Example 1 is that the elbow 5 located at one end of the water inlet aluminum pipe joint 3 and the water outlet aluminum pipe joint 4 adopts the following structure, the elbow 5 includes a bendable hose 8 and joints 9 arranged at both ends of the hose 8, the joint 9 has a pier head to achieve a sealed connection with the hose 8, and the joint 9 is welded and fixed to the port at this end.
[0023] The above structure has the following advantages: the aluminum tube is segmented and welded to the port on the profile, the aluminum tube with pier head is batch processed in advance using a mold, and the aluminum tube and the profile are fixed with a welding furnace, which greatly improves the process efficiency.
[0024] The welding of aluminum tubes and profiles replaces the mechanical expansion method, which solves the power factor affected by the failure to ensure full fit between the two and greatly improves the heating stability of the product at maximum power.
Claims
1. An aluminum tube welding type PTC heater, comprising a profile body (1), the profile body (1) is provided with a plurality of parallel channels (2), the channels (2) pass through opposite ends of the profile body (1), characterized in that: It also includes an aluminum water inlet pipe joint (3) with a pier head, an aluminum water outlet pipe joint (4) and a bend pipe (5), and one end of one of the channels (2) in all the channels (2) is used as a liquid inlet. One end of one of the remaining channels (2) other than the channel (2) serves as a liquid outlet, an inlet aluminum pipe joint (3) and an outlet aluminum pipe joint (4) are respectively welded and fixed to the inlet and outlet, and an elbow (5) is respectively welded and fixed to the ports of the remaining channels (2), so that after the liquid enters the channel (2) from the inlet aluminum pipe joint (3), it enters another channel (2) under the action of the elbow (5), until the liquid finally flows through all the channels (2) and then flows out from the outlet aluminum pipe joint (4). A slot (6) is provided on the profile body (1), and the slot (6) includes two heat conducting surfaces, each heat conducting surface is opposite to at least one channel (2), and a PTC heating core is provided in the slot (6).
2. The aluminum tube welding type PTC heater according to claim 1, characterized in that: The diameters of the two ports of the channel (2) are larger than the diameter of the channel (2) to form a stepped surface, and the water inlet aluminum pipe joint (3), the water outlet aluminum pipe joint (4) and the elbow (5) are tightly connected to the ports.
3. The aluminum tube welding type PTC heater according to claim 2, characterized in that: The channel (2) is opposite to the heat conducting surface.
4. The aluminum tube welding type PTC heater according to claim 3, characterized in that: The profile body (1) is made of aluminum alloy material.
5. The aluminum tube welding type PTC heater according to claim 1, characterized in that: The curved pipe (5) comprises a bendable hose (8) and joints (9) arranged at both ends of the hose (8).