CN213020343U - Constant power PTC liquid heater - Google Patents
Constant power PTC liquid heater Download PDFInfo
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- CN213020343U CN213020343U CN202020529960.8U CN202020529960U CN213020343U CN 213020343 U CN213020343 U CN 213020343U CN 202020529960 U CN202020529960 U CN 202020529960U CN 213020343 U CN213020343 U CN 213020343U
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Abstract
A constant-power PTC liquid heater comprises a lower shell, an upper shell, a mounting plate, a water chamber, a PTC heating core body, a controller and a flat tube; the PTC heater is arranged in the lower shell, the upper shell is arranged on the lower shell and matched with the lower shell, a mounting plate is arranged at the top of the PTC heater, and the controller is arranged on the mounting plate; the PTC heater includes PTC heating core and two hydroeciums, flat pipe evenly install two between the hydroecium, the both ends of flat pipe respectively with correspond one side the hydroecium intercommunication install on the flat pipe PTC heating core, two the hydroecium communicates with inlet tube and outlet pipe respectively. The two groups of water temperature sensors monitor the temperature of the inlet and outlet liquid in real time, and the feedback sensitivity is obviously improved compared with a surface detection type temperature sensor. Can feed back to the control system in time to control and adjust, and improve the reaction efficiency and the accuracy of the system.
Description
Technical Field
The utility model relates to a heater field, concretely relates to constant power PTC liquid heater.
Background
When the existing PTC liquid heater works, the PTC liquid heater mainly utilizes the self characteristics of the PTC to adjust the heating power, heating parameters are not actively controlled, and the heating power is automatically adjusted along with external influence factors such as liquid temperature and flow change, voltage change, atmospheric pressure and the like. When the external factors are in an unstable state for a long time, the power parameter of the PTC heater is in an unstable state all the time.
The existing PTC liquid heaters generally use one or two surface-detecting temperature sensors, which are directly fixed to the surface of the water chamber by screws. Or a special structure is designed to be embedded near the water chamber, and the real-time temperature of the liquid is detected through heat conduction.
The defects of the prior art are as follows:
the difference exists between the actual test parameters and the design parameters due to the rated working condition error and the environmental change. The PTC heater has self-adaptive thermal balance characteristic and reaches a constant power state, so that the PTC resistor is mostly used as a constant power resistor in principle, but the constant power resistor has high requirements on the change of medium conditions and the change of the surrounding environment, otherwise, the power can be changed correspondingly. Not suitable for applications requiring constant power.
The surface detection type temperature sensor can detect the temperature of the internal liquid only by heat conduction of the water chamber shell, the real-time temperature measurement can be delayed, the real-time temperature measurement cannot be timely, accurately and effectively fed back to a heater control system, and the precision of the output liquid temperature of the PTC liquid heater is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's not enough, provide a constant power PTC liquid heater, concrete technical scheme is as follows:
a constant power PTC liquid heater is characterized in that: the PTC water heater comprises a lower shell (1), an upper shell (2), a mounting plate (3), a water chamber (4), a PTC heating core body (5), a controller (6) and a flat tube (13);
the PTC heater is arranged in the lower shell (1), the upper shell (2) is arranged on the lower shell (1), the upper shell (2) is matched with the lower shell (1), a mounting plate (3) is arranged at the top of the PTC heater, and the controller (6) is arranged on the mounting plate (3);
the PTC heater comprises a PTC heating core body (5) and two water chambers (4), the flat tubes (13) are uniformly arranged between the two water chambers (4), two ends of each flat tube (13) are respectively communicated with the corresponding water chamber (4), the PTC heating core body (5) is arranged on each flat tube (13), and the two water chambers (4) are respectively communicated with a water inlet pipe (11) and a water outlet pipe (12);
a fixed seat (7) is installed at the top of the water chamber (4), the water temperature sensor (8) is installed on the fixed seat (7), and a temperature sensing head of the water temperature sensor (8) penetrates through the top of the water chamber (4) and extends into the water chamber (4).
For better realization the utility model discloses, can further be: the bottom of the fixed seat (7) is provided with a mounting threaded hole (9), the water temperature sensor (8) is mounted in the mounting threaded hole (9), and the water temperature sensor (8) is matched with the mounting threaded hole (9).
Further: a sealing ring (10) is arranged between the water temperature sensor (8) and the fixed seat (7).
Further: the water inlet pipe (11) and the water outlet pipe (12) respectively extend out of two opposite side surfaces of the lower shell (1).
The utility model has the advantages that: firstly, two sets of water temperature sensors monitor the temperature of inlet and outlet liquid in real time, and the feedback sensitivity is obviously improved compared with a surface detection type temperature sensor. Can feed back to the control system in time to control and adjust, and improve the reaction efficiency and the accuracy of the system.
Secondly, on the basis of the existing PTC liquid heater, the performance of the temperature sensor is optimized, the surface detection type temperature sensor is improved to be a soaking contact type waterproof temperature sensor, and the timeliness and accuracy of real-time temperature monitoring are improved.
Drawings
FIG. 1 is a schematic view of the overall structure;
FIG. 2 is a view showing the installation of a water temperature sensor;
the figure shows that the lower shell 1, the upper shell 2, the mounting plate 3, the water chamber 4, the PTC heating core body 5, the controller 6, the fixed seat 7, the water temperature sensor 8, the mounting threaded hole 9, the sealing ring 10, the water inlet pipe 11, the water outlet pipe 12 and the flat pipe 13.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
As shown in fig. 1 and 2:
a constant power PTC liquid heater comprises a lower shell 1, an upper shell 2, a mounting plate 3, a water chamber 4, a PTC heating core body 5, a controller 6 and a flat tube 13;
the PTC heater is arranged in the lower shell 1, the upper shell 2 is arranged on the lower shell 1, the upper shell 2 is matched with the lower shell 1, a mounting plate 3 is arranged at the top of the PTC heater, and the controller 6 is arranged on the mounting plate 3;
PTC heater includes PTC heating core 5 and two hydroecium 4, flat pipe 13 evenly installed is two between the hydroecium 4, flat pipe 13 both ends respectively with correspond one side hydroecium 4 intercommunication install on flat pipe 13 PTC heating core 5, two hydroecium 4 communicates with inlet tube 11 and outlet pipe 12 respectively, inlet tube 11 with outlet pipe 12 stretches out the outside from casing 1 relative both sides face down respectively.
A fixed seat 7 is installed at the top of the water chamber 4, the water temperature sensor 8 is installed on the fixed seat 7, and a temperature sensing head of the water temperature sensor 8 penetrates through the top of the water chamber 4 and extends into the water chamber 4.
In this embodiment, the specific mounting structure of the water temperature sensor is that a mounting threaded hole 9 is opened at the bottom of the fixing seat 7, the water temperature sensor 8 is installed in the mounting threaded hole 9, and the water temperature sensor 8 is matched with the mounting threaded hole 9. A sealing ring 10 is arranged between the water temperature sensor 8 and the fixed seat 7.
Wherein, the water temperature sensor mounting structure does, and the fixing base is in the same place with the hydroecium welding, and on water temperature sensor and sealing washer installed the fixing base through the screw thread, the water temperature sensor design had special sealing washer mounting groove, screwed up the back sensor installation face and hug closely the fixing base installation face, and the sealing washer is weather resistance rubber, reaches the anti water pressure effect through design control sealing washer compression ratio.
Claims (4)
1. A constant power PTC liquid heater is characterized in that: the PTC water heater comprises a lower shell (1), an upper shell (2), a mounting plate (3), a water chamber (4), a PTC heating core body (5), a controller (6) and a flat tube (13);
the PTC heater is arranged in the lower shell (1), the upper shell (2) is arranged on the lower shell (1), the upper shell (2) is matched with the lower shell (1), a mounting plate (3) is arranged at the top of the PTC heater, and the controller (6) is arranged on the mounting plate (3);
the PTC heater comprises a PTC heating core body (5) and two water chambers (4), the flat tubes (13) are uniformly arranged between the two water chambers (4), two ends of each flat tube (13) are respectively communicated with the corresponding water chamber (4), the PTC heating core body (5) is arranged on each flat tube (13), and the two water chambers (4) are respectively communicated with a water inlet pipe (11) and a water outlet pipe (12);
a fixed seat (7) is installed at the top of the water chamber (4), a water temperature sensor (8) is installed on the fixed seat (7), and a temperature sensing head of the water temperature sensor (8) penetrates through the top of the water chamber (4) and extends into the water chamber (4).
2. A constant power PTC liquid heater according to claim 1, wherein: the bottom of the fixed seat (7) is provided with a mounting threaded hole (9), the water temperature sensor (8) is mounted in the mounting threaded hole (9), and the water temperature sensor (8) is matched with the mounting threaded hole (9).
3. A constant power PTC liquid heater according to claim 1, wherein: a sealing ring (10) is arranged between the water temperature sensor (8) and the fixed seat (7).
4. A constant power PTC liquid heater according to claim 1, wherein: the water inlet pipe (11) and the water outlet pipe (12) respectively extend out of two opposite side surfaces of the lower shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020529960.8U CN213020343U (en) | 2020-04-10 | 2020-04-10 | Constant power PTC liquid heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020529960.8U CN213020343U (en) | 2020-04-10 | 2020-04-10 | Constant power PTC liquid heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213020343U true CN213020343U (en) | 2021-04-20 |
Family
ID=75443780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020529960.8U Active CN213020343U (en) | 2020-04-10 | 2020-04-10 | Constant power PTC liquid heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213020343U (en) |
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2020
- 2020-04-10 CN CN202020529960.8U patent/CN213020343U/en active Active
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