CN213020297U - Double-circulation stainless steel PTC liquid heater - Google Patents
Double-circulation stainless steel PTC liquid heater Download PDFInfo
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- CN213020297U CN213020297U CN202021139821.0U CN202021139821U CN213020297U CN 213020297 U CN213020297 U CN 213020297U CN 202021139821 U CN202021139821 U CN 202021139821U CN 213020297 U CN213020297 U CN 213020297U
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Abstract
The utility model discloses a double-circulation stainless steel PTC liquid heater, the structure of the liquid heater is middle heating, both sides business turn over water, adopt the water-electricity separation type PTC liquid heating, constitute inner circulation layer, middle heating layer, outer circulation layer by 3 concentric assembly stainless steel round pipes, the inner circulation layer both ends are equipped with inner circulation liquid import and export, the middle heating layer is between inner stainless steel round pipe outer wall and middle stainless steel round pipe inner wall, the surface is equipped with PTC potsherd and heater lead-out wire and links to each other and stretches out one side of middle stainless steel pipe, the outer circulation layer is between middle stainless steel round pipe outer wall and outer stainless steel round pipe inner wall, the top both sides are equipped with outer circulation import and export, the whole device design is ingenious, the middle layer is the outer wall of middle heating layer as well as the outer circulation layer inner wall, fully absorbs the heat of two heating surfaces, makes the heat totally absorbed, the heat loss is reduced to the maximum extent, the thermoelectric conversion efficiency is improved, and the surface temperature of the liquid heater is reduced.
Description
Technical Field
The utility model relates to a heating device technical field, concretely relates to dual cycle stainless steel PTC liquid heater.
Background
The liquid heater is a device for heating liquid, and can heat liquid such as water and heat transfer oil. In recent years, the PTC ceramic sheet heating technology has been developed rapidly in China, and many liquid heater products made of PTC ceramic sheets appear in the market, and the basic structure of these PTC liquid heaters is: the inside of the heating container is a water path, and the outer wall of the heating container is tightly matched with the PTC ceramic sheet.
The straight tube type PTC liquid heater is the most common PTC liquid heater, liquid flows through the hollow part in the middle of the inner wall of the PTC liquid heater, the outer wall of the heater is tightly matched with the PTC ceramic plate, and in the heating process, the heat of the heating surface of the PTC ceramic plate tightly attached to the outer wall of the heater is taken away by the liquid flowing fast, so that the real water-electricity separation is realized. The hollow part in the middle of the inner wall of the straight tube type PTC liquid heater is a cylinder which is a liquid circulation part.
However, in the prior art, although the straight tube type PTC liquid heater can achieve water-electricity separation, in the heating process, the liquid flowing rapidly only takes away the heat of the heating surface of the PTC ceramic plate clinging to the outer wall of the heater, the heat of the other heating surface of the PTC ceramic plate is dissipated into the air, the thermoelectric conversion is not fully utilized, and the ambient temperature around the PTC liquid heater is increased; and the liquid close to the inner wall of the straight tube type PTC liquid heater absorbs the heat of the PTC ceramic plate, while the liquid in the center of the cylinder obtains little heat. The PTC liquid heater generally adopts aluminum profiles, aluminum is not corrosion-resistant, the service life of the heater is influenced, and in addition, the aluminum profiles have larger thermal expansion coefficients and are easy to generate thermal deformation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two circulation stainless steel PTC liquid heater to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a dual-circulation stainless steel PTC liquid heater, the structure of the heater is middle heating, both sides enter and exit water, adopt the water-electricity separation type PTC liquid heating, the stainless steel round tube assembled concentrically by 3 pieces constitutes the inner circulation layer, the middle heating layer, the outer circulation layer, the middle heating layer is located between the inner circulation layer and the outer circulation layer, the inner circulation layer is inside the stainless steel round tube of the inner layer, both ends are equipped with the inlet and outlet of the inner circulation liquid, the middle heating layer is between the stainless steel round tube outer wall of the inner layer and the stainless steel round tube inner wall of the middle layer, the stainless steel round tube outer wall of the inner layer and both sides of the stainless steel round tube of the middle layer are sealed by the insulating and heat-insulating sealant, the outer surface of the stainless steel round tube of the middle layer is equipped with PTC, the PTC ceramic plate is used as the electric heating element, one side of the PTC ceramic plate is connected with the leading-out wire of the heater, outer stainless steel pipe and intermediate level stainless steel pipe form independent confined extrinsic cycle layer through the welding of both sides shrouding together, and the top both sides are equipped with extrinsic cycle and import and export, and simultaneously, outer stainless steel pipe is fixed into a whole through both sides shrouding and inlayer stainless steel pipe.
In the technical scheme, the heater is formed by sleeving three layers of 304 stainless steel round pipes with different inner diameters in a concentric mode.
As a further aspect of the present invention: the heater is formed by sleeving three layers of 304 stainless steel square pipes with different inner diameters in a concentric mode.
As a further aspect of the present invention: the inner circulation layer, the middle heating layer and the outer circulation layer are made of stainless steel, copper or aluminum profiles.
As a further aspect of the present invention: the internal circulation inlet and the external circulation outlet are respectively and independently arranged.
Compared with the prior art, the beneficial effects of the utility model are that: the device has reasonable design, good processing performance and high toughness; corrosion resistance and long service life; no deformation and less power attenuation; the middle heating layer is positioned between the inner circulation layer and the outer circulation layer, the heat of the two heating surfaces of the middle heating layer is fully utilized, the thermoelectric conversion efficiency is comprehensively improved, and the surface temperature of the heater is reduced.
Drawings
Fig. 1 is a front view of a dual cycle stainless steel PTC liquid heater.
Fig. 2 is a vertical cross-section of a dual cycle stainless steel PTC liquid heater.
Fig. 3 is a horizontal cross-sectional view of a dual cycle stainless steel PTC liquid heater.
Wherein: 1-inner layer stainless steel round pipe, 2-middle layer stainless steel round pipe, 3-outer layer stainless steel round pipe, 4-inner circulation liquid inlet and outlet, 5-outer circulation liquid inlet and outlet, 6-inner circulation liquid inlet and outlet screw thread, 7-outer circulation liquid inlet and outlet screw thread, 8-sealing plate, 9-middle heating layer, 10-inner circulation layer, 11-outer circulation layer and 12-heater outgoing line.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1-3, a dual cycle PTC liquid heater comprises an inner circulation layer 10, an intermediate heating layer 9, and an outer circulation layer 11, wherein the inner circulation layer 10 comprises an inner stainless steel round tube 1 and an inner circulation liquid inlet and outlet 4, the intermediate heating layer 9 comprises an outer wall of the inner stainless steel round tube 1, an inner wall of a middle stainless steel round tube 2, an insulating and heat-insulating sealant, a PTC ceramic piece, and a heater lead wire 12, the outer circulation layer 11 comprises an outer wall of the middle stainless steel round tube 2, an inner wall of an outer stainless steel round tube 3, an inlet and outlet 5 of the outer circulation liquid, and a sealing plate 8, the outer stainless steel round tube 3 and the middle stainless steel round tube 2 are welded together through the two sealing plates 8 to form the outer circulation layer 11, and the outer stainless steel round tube 3 is fixed with the inner stainless steel.
The utility model discloses a working method as follows:
starting the device, the circulating liquid is connected with the liquid main pipeline through the internal circulating liquid inlet and outlet threads 6 and the external circulating liquid inlet and outlet threads 7 to form a double-set liquid circulating system. Inner circulation layer 10 liquid circulation loop: the liquid flows through the inner circulation liquid inlet and outlet 4 of the inner circulation layer 10, the flowing liquid absorbs the heat emitted from the inner side of the intermediate heating layer 9, after the heating of the intermediate heating layer 9, the liquid in the inner circulation layer 10 finally joins the liquid flowing in the outer circulation liquid inlet and outlet 5 of the outer circulation layer 11 to the main pipeline through the inner circulation liquid inlet and outlet 4, and the liquid absorbs the heat uniformly. Outer circulation layer 11 liquid circulation loop: the liquid flows through the external circulation liquid inlet and outlet 5 to absorb the heat emitted from the outer side of the intermediate heating layer 9, so that the two heating surfaces of the intermediate heating layer 9 are fully utilized, the thermoelectric conversion efficiency is improved, and the ambient temperature is reduced.
The middle heating layer of the device is positioned between the inner circulation layer and the outer circulation layer, and the stainless steel round pipe of the middle layer is not only the outer wall of the middle heating layer, but also the inner wall of the outer circulation layer, so that the heat of the two heating surfaces of the middle heating layer can be fully absorbed, the heat emitted by the middle heating layer is fully absorbed, the heat loss is reduced to the maximum extent, the thermoelectric conversion efficiency is improved, and the surface temperature of the liquid heater is reduced; all the sectional materials of the device are 304 stainless steel, and the 304 stainless steel has good processing performance and high toughness and is more suitable for being used as a sectional material of a liquid heater than copper and aluminum; the 304 stainless steel has good corrosion resistance, and the liquid heater made of the 304 stainless steel is more corrosion resistant and has long service life; the 304 stainless steel can resist the high temperature of 800 ℃, and the liquid heater made of the 304 stainless steel has no deformation and less power attenuation.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (6)
1. A dual-circulation stainless steel PTC liquid heater is characterized in that the heater is structurally characterized in that water enters and exits from the middle and two sides, water and electricity separated PTC liquid heating is adopted, an inner circulation layer, a middle heating layer and an outer circulation layer are formed by 3 concentric stainless steel round pipes, the middle heating layer is positioned between the inner circulation layer and the outer circulation layer, the inner circulation layer is arranged in the inner stainless steel round pipe, the two ends of the inner circulation layer are provided with an inner circulation liquid inlet and an inner circulation liquid outlet, the middle heating layer is arranged between the outer wall of the inner stainless steel round pipe and the inner wall of the middle stainless steel round pipe, the outer wall of the inner stainless steel round pipe and the two sides of the middle stainless steel round pipe are sealed by insulating and heat-insulating sealant, the surface of the outer stainless steel round pipe of the middle layer is provided with a PTC ceramic plate serving as an electric heating element, one side of the PTC ceramic plate is connected with a leading-out wire of the heater and extends out, outer stainless steel pipe and intermediate level stainless steel pipe form independent confined extrinsic cycle layer through the welding of both sides shrouding together, and the top both sides are equipped with extrinsic cycle and import and export, and simultaneously, outer stainless steel pipe is fixed into a whole through both sides shrouding and inlayer stainless steel pipe.
2. A dual cycle stainless steel PTC liquid heater according to claim 1, wherein the heater is concentrically nested with three 304 stainless steel round tubes of different inside diameters.
3. A dual cycle stainless steel PTC liquid heater according to claim 1, wherein the inner circulation layer, intermediate heating layer and outer circulation layer are stainless steel, copper or aluminum profiles.
4. A dual cycle stainless steel PTC liquid heater according to claim 1, wherein the inner and outer circulation ports are each provided separately.
5. A dual cycle stainless steel PTC liquid heater according to claim 1, wherein the intermediate heating layer employs a PTC ceramic sheet as an electrical heating element.
6. A dual cycle stainless steel PTC liquid heater according to claim 1, wherein when the heater is in operation, the circulating liquid is connected to the main liquid line through the inner circulating liquid inlet/outlet and the outer circulating liquid inlet/outlet, respectively, to form a dual liquid circulating system,
inner circulation layer liquid circulation loop: liquid flows through the inner circulation liquid inlet and outlet of the inner circulation layer, the flowing liquid absorbs heat emitted from the inner side of the intermediate heating layer, after the heating of the intermediate heating layer, the liquid in the inner circulation layer finally converges with the liquid flowing in the outer circulation liquid inlet and outlet of the outer circulation layer to the main pipeline through the inner circulation liquid inlet and outlet, and the liquid uniformly absorbs the heat;
outer circulation layer liquid circulation loop: the liquid flows through the external circulation liquid inlet and outlet to absorb the heat emitted from the outer side of the intermediate heating layer, so that the two heating surfaces of the intermediate heating layer are fully utilized, the thermoelectric conversion efficiency is improved, and the ambient temperature is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021139821.0U CN213020297U (en) | 2020-06-18 | 2020-06-18 | Double-circulation stainless steel PTC liquid heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021139821.0U CN213020297U (en) | 2020-06-18 | 2020-06-18 | Double-circulation stainless steel PTC liquid heater |
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| Publication Number | Publication Date |
|---|---|
| CN213020297U true CN213020297U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021139821.0U Active CN213020297U (en) | 2020-06-18 | 2020-06-18 | Double-circulation stainless steel PTC liquid heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213020297U (en) |
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2020
- 2020-06-18 CN CN202021139821.0U patent/CN213020297U/en active Active
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Inventor after: Wang Fuqing Inventor before: Wang Fuqing |