Double-PTC (Positive Temperature Coefficient) water electric heater

Abstract

The utility model discloses a double PTC (Positive Temperature Coefficient) water electric heater, which structurally comprises a mounting shell, a base and a PTC heating device, and further comprises a connecting mechanism and a telescopic rod, the connecting mechanism comprises an outer lower connecting ring, an inner lower connecting ring, an inner upper connecting ring and an outer upper connecting ring, and the connecting mechanism is arranged between the mounting shell and the base. The outer lower connecting ring and the inner lower connecting ring are fixedly connected with the upper portion of the base, the inner upper connecting ring and the outer upper connecting ring are fixedly connected with the lower portion of the installation shell, sealing grooves are formed in the outer lower connecting ring and the inner upper connecting ring, and sealing strips are fixedly arranged on the inner lower connecting ring and the outer upper connecting ring. The outer upper connecting ring and the outer lower connecting ring are connected in an embedded mode, and the inner lower connecting ring and the inner upper connecting ring are connected in an embedded mode. The utility model belongs to the field of PTC (Positive Temperature Coefficient) heaters, and particularly relates to a double-PTC electric heater.

Description

Technical Field

[0001] The utility model belongs to the field of PTC heaters, and particularly relates to a double PTC water and electricity heater. Background Art

[0002] Heating devices are commonly used in energy storage power stations, solar power stations and other places that require long-term heating. In these places, heating devices with PTC heating elements are usually used for heating. The PTC heating element has the characteristic of constant-temperature heating. After being powered on, it heats up by itself and the resistance value increases to enter the jump region, so that the surface temperature of the PTC heating element will remain at a constant value, thereby heating the liquid to be heated inside the inner tube of the heating device at a constant temperature.

[0003] Most of the existing heating devices with PTC heating elements are sleeved with heat insulation materials on the outer shell. The heat insulation effect is relatively general, and it is inconvenient to disassemble and repair after sleeving the heat insulation materials. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is that the heat insulation effect of sleeving the heat insulation materials is general and it is inconvenient to disassemble and repair.

[0005] To solve the above problems, the following technical solutions are adopted in the utility model: The double PTC water and electricity heater proposed by the utility model includes an installation shell, a base and a PTC heating device, and also includes a connection mechanism and a telescopic rod. The connection mechanism includes an outer lower connection ring, an inner lower connection ring, an inner upper connection ring and an outer upper connection ring. The connection mechanism is arranged between the installation shell and the base. The outer lower connection ring and the inner lower connection ring are fixedly connected to the upper part of the base. The inner upper connection ring and the outer upper connection ring are fixedly connected to the lower part of the installation shell. Sealing grooves are formed on both the outer lower connection ring and the inner upper connection ring. Sealing strips are fixedly arranged on the inner lower connection ring and the outer upper connection ring. The outer upper connection ring and the outer lower connection ring are in a fitting connection. The inner lower connection ring and the inner upper connection ring are in a fitting connection.

[0006] Further, a vacuum pump is fixedly arranged on the upper part of the installation shell, and the lower part of the vacuum pump penetrates through the installation shell between the inner upper connection ring and the outer upper connection ring.

[0007] Further, there are two groups of PTC heating devices arranged inside the inner lower connection ring.

[0008] Further, the lower end of the telescopic rod is fixedly arranged between the outer lower connection ring and the inner lower connection ring, and the upper end of the telescopic rod is fixedly provided with a push plate, and the upper part of the push plate is in contact connection with the lower part of the inner side of the installation shell.

[0009] Further, a water inlet is formed on the upper part of the installation shell, and a drain outlet is formed on the lower part of the base.

[0010] Further, upper connecting blocks are fixedly provided on both the left and right sides of the lower part of the installation shell, lower connecting blocks are fixedly provided on both the left and right sides of the lower part of the base side, bolts are movably connected to the upper connecting blocks, the bolts sequentially penetrate through the upper connecting blocks and the lower connecting blocks, and the bolts are in threaded connection with the upper connecting blocks and the lower connecting blocks.

[0011] Further, the height of the inner lower connecting ring is greater than the height of the outer lower connecting ring, the outer diameter of the inner lower connecting ring is less than the inner diameter of the outer lower connecting ring, and the inner diameter of the outer upper connecting ring is greater than the outer diameter of the inner upper connecting ring.

[0012] The beneficial effects achieved by the present utility model with the above structure are as follows:

[0013] 1. For the dual PTC water and electricity heater proposed in this solution, by arranging a telescopic rod in the connecting mechanism, the installation shell can be quickly pushed up from the base, making disassembly and repair convenient.

[0014] 2. For the dual PTC water and electricity heater proposed in this solution, by arranging a connecting mechanism between the installation shell and the base to form a closed ring, a vacuum is formed under the operation of the vacuum pump, increasing the heat preservation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the first overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the second overall structural schematic diagram of the present utility model;

[0017] Figure 3 is the overall cross-sectional schematic diagram of the present utility model.

[0018] Wherein, 1. Installation shell, 101. Water inlet, 102. Upper connecting block, 2. Base, 201. Drainage port, 202. Lower connecting block, 3. Connecting mechanism, 301. Outer lower connecting ring, 302. Inner lower connecting ring, 303. Inner upper connecting ring, 304. Outer upper connecting ring, 4. Bolt, 5. Sealing strip, 6. Sealing groove, 7. Telescopic rod, 701. Push plate, 8. PTC heating device, 9. Vacuum pump.

[0019] The drawings are used to provide further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] As Figure 1 、 Figure 2 and Figure 3 shown, a dual PTC water heater proposed by the present invention includes an installation shell 1, a base 2, and a PTC heating device 8, and further includes a connection mechanism 3 and a telescopic rod 7. The connection mechanism 3 includes an outer lower connection ring 301, an inner lower connection ring 302, an inner upper connection ring 303, and an outer upper connection ring 304. The connection mechanism 3 is provided between the installation shell 1 and the base 2. The outer lower connection ring 301 and the inner lower connection ring 302 are fixedly connected to the upper part of the base 2, and the inner upper connection ring 303 and the outer upper connection ring 304 are fixedly connected to the lower part of the installation shell 1. Sealing grooves 6 are provided on both the outer lower connection ring 301 and the inner upper connection ring 303, and sealing strips 5 are fixedly provided on the inner lower connection ring 302 and the outer upper connection ring 304. The outer upper connection ring 304 and the outer lower connection ring 301 are in a fitting connection, and the inner lower connection ring 302 and the inner upper connection ring 303 are in a fitting connection.

[0022] As Figure 1 、 Figure 2 and Figure 3 shown, a vacuum pump 9 is fixedly provided on the upper part of the installation shell 1. The lower part of the vacuum pump 9 penetrates through the installation shell 1 between the inner upper connection ring 303 and the outer upper connection ring 304 to extract the air inside the connection mechanism 3 and improve the heat preservation effect.

[0023] There are two groups of the PTC heating devices 8, which are provided inside the inner lower connection ring 302. Compared with a group of PTC heating devices 8, the heating effect is better. The lower end of the telescopic rod 7 is fixedly provided between the outer lower connection ring 301 and the inner lower connection ring 302. The upper end of the telescopic rod 7 is fixedly provided with a push plate 701. The upper part of the push plate 701 abuts against the lower part of the inner side of the installation shell 1, and can push the installation shell 1 away from the base 2, facilitating the cleaning and repair of the PTC heating device 8.

[0024] As Figure 1 、 Figure 2 and Figure 3As shown, a water inlet 101 is provided at the upper part of the installation shell 1, and a drain outlet 201 is provided at the lower part of the base 2 for adding and discharging heated water. Upper connecting blocks 102 are fixedly provided on both the left and right sides of the lower part of the installation shell 1, and lower connecting blocks 202 are fixedly provided on both the left and right sides of the lower part of the side of the base 2. A bolt 4 is movably connected to the upper connecting block 102. The bolt 4 sequentially penetrates through the upper connecting block 102 and the lower connecting block 202, and the bolt 4 is in threaded connection with the upper connecting block 102 and the lower connecting block 202 for fixing the installation shell 1 and the base 2.

[0025] The height of the inner lower connecting ring 302 is greater than the height of the outer lower connecting ring 301, and the outer diameter of the inner lower connecting ring 302 is smaller than the inner diameter of the outer lower connecting ring 301. The inner diameter of the outer upper connecting ring 304 is greater than the outer diameter of the inner upper connecting ring 303.

[0026] During specific use, align the sealing strip 5 on the outer upper connecting ring 304 with the sealing groove 6 on the outer lower connecting ring 301, align the sealing groove 6 on the inner upper connecting ring 303 with the sealing strip 5 on the inner lower connecting ring 302, sleeved the base 2 on the upper part of the installation shell 1, and use the bolt 4 to sequentially screw through the upper connecting block 102 and the lower connecting block 202 to complete the connection and fixation of the installation shell 1 and the base 2, forming a closed annular space. Start the vacuum pump 9 to evacuate the annular space in the connecting mechanism 3, which can increase the heat preservation effect on the inner side of the inner lower connecting ring 302. When it is necessary to clean and repair the PTC heating device 8, unscrew the bolt 4 from the upper connecting block 102, extend the telescopic rod 7 to control the push plate 701 to push up the installation shell 1, which is convenient for removing the installation shell 1, and the disassembly and repair are convenient.

[0027] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and without departing from the gist of the creation of the present invention, and design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A dual PTC water heater, comprising an installation shell, a base and a PTC heating device, characterized in that, It further includes a connecting mechanism and a telescopic rod. The connecting mechanism includes an outer lower connecting ring, an inner lower connecting ring, an inner upper connecting ring and an outer upper connecting ring. The connecting mechanism is arranged between the mounting shell and the base. The outer lower connecting ring and the inner lower connecting ring are fixedly connected to the upper part of the base. The inner upper connecting ring and the outer upper connecting ring are fixedly connected to the lower part of the mounting shell. Sealing grooves are formed on both the outer lower connecting ring and the inner upper connecting ring. Sealing strips are fixedly arranged on the inner lower connecting ring and the outer upper connecting ring. The outer upper connecting ring and the outer lower connecting ring are in a fitting connection. The inner lower connecting ring and the inner upper connecting ring are in a fitting connection.

2. The dual PTC water heater according to claim 1, characterized in that: A vacuum pump is fixedly arranged on the upper part of the mounting shell. The lower part of the vacuum pump penetrates through the mounting shell between the inner upper connecting ring and the outer upper connecting ring.

3. The dual PTC water heater according to claim 2, wherein: There are two groups of PTC heating devices arranged inside the inner lower connecting ring.

4. The dual PTC water heater according to claim 3, characterized in that: The lower end of the telescopic rod is fixedly arranged between the outer lower connecting ring and the inner lower connecting ring. The upper end of the telescopic rod is fixedly provided with a push plate. The upper part of the push plate is in contact connection with the inner side of the lower part of the mounting shell.

5. The dual PTC water heater according to claim 4, characterized in that: A water inlet is formed on the upper part of the mounting shell. A drain outlet is formed on the lower part of the base.

6. The dual PTC water heater according to claim 5, wherein: Upper connecting blocks are fixedly arranged on both the left and right sides of the lower part of the mounting shell. Lower connecting blocks are fixedly arranged on both the left and right sides of the lower part of the base. Bolts are movably connected to the upper connecting blocks. The bolts sequentially penetrate through the upper connecting blocks and the lower connecting blocks. The bolts are in threaded connection with the upper connecting blocks and the lower connecting blocks.

7. A dual PTC hydroelectric heater according to any one of claims 1-6, characterized in that: The height of the inner lower connecting ring is greater than the height of the outer lower connecting ring. And the outer diameter of the inner lower connecting ring is smaller than the inner diameter of the outer lower connecting ring. The inner diameter of the outer upper connecting ring is greater than the outer diameter of the inner upper connecting ring.

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