CN211451363U - Safety electric water heater - Google Patents
Safety electric water heater Download PDFInfo
- Publication number
- CN211451363U CN211451363U CN201921519668.1U CN201921519668U CN211451363U CN 211451363 U CN211451363 U CN 211451363U CN 201921519668 U CN201921519668 U CN 201921519668U CN 211451363 U CN211451363 U CN 211451363U
- Authority
- CN
- China
- Prior art keywords
- water heater
- electric water
- temperature limiter
- rectifier
- mcu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model provides a safe type electric water heater, including power cord, rectifier, temperature limiter, heating member and MCU, the input of rectifier is connected to the power cord, the output of rectifier is established ties the temperature limiter, the heating member is connected to the output of temperature limiter, the temperature limiter with MCU electric connection, be provided with the earth leakage protection plug on the power cord, form first safety protection through the earth leakage protection plug to protection through the temperature limiter can be under the overtemperature environment direct open circuit form the second and protect, protect electric water heater through the multilayer protection, form safe type electric water heater, safe and reliable.
Description
Technical Field
The utility model belongs to the technical field of electric water heater and specifically relates to a safe type electric water heater.
Background
The existing electric water heater generally protects the electric water heater and temperature control through a shock-proof wall, the shock-proof wall is a water resistance attenuation isolation method, the self resistance of water (the resistivity of tap water is higher than 1300 omega cm at 15 ℃ as specified by national standard) is utilized, the pipe diameter and the distance are determined through selecting the material (insulating material) of a water through pipe in the electric water heater to form the ' shock-proof wall ', the ' shock-proof wall has requirements on the water through pipe of the electric water heater, a heating body is connected with alternating current, certain potential safety hazard exists, an MCU controls the work of a heating pipe by detecting the temperature of water in an inner container through temperature control, heating is stopped after the inner container is over-heated, a circuit cannot be cut off, and certain potential hazard exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcomings in the prior art, providing a safe electric water heater, aiming at solving the safety problem of electric water heater.
In order to achieve the above purpose, the utility model adopts the following scheme:
the utility model provides a safe type electric water heater, includes power cord, rectifier, temperature limiter, heating member and MCU, the input of rectifier is connected to the power cord, the output of rectifier is established ties the temperature limiter, the heating member is connected to the output of temperature limiter, the temperature limiter with MCU electric connection, be provided with the earth leakage protection plug on the power cord, form first safety protection through the earth leakage protection plug to protection through the temperature limiter can be directly the disconnection circuit form the second protection under the overtemperature environment, protects electric water heater through multilayer protection, forms safe type electric water heater, safe and reliable.
In one or more embodiments, the temperature limiter is a manual reset temperature limiter, and a reset button is arranged on the temperature limiter.
In one or more embodiments, the temperature limiter is further provided with a temperature detection device, the temperature detection device is connected with an input end of the MCU, and the MCU is connected with an input end of the temperature limiter.
In one or more embodiments, the heating device is further provided with a driving module, an output end of the driving module is connected with the heating body in series, and a control end of the driving module is connected with the MCU.
In one or more embodiments, the heating body is an electric heating tube.
In one or more embodiments, the rectifier is provided with heat sinks for dissipating heat from the rectifier, thereby preventing the rectifier from overheating, improving the life of the rectifier, and reducing after-sales maintenance.
In one or more embodiments, a heat dissipation fan is further disposed to dissipate heat of the rectifier.
In one or more embodiments, the fireproof door is further provided with an inner container and an outer shell, a foaming layer is arranged between the inner container and the outer shell, and fireproof cotton is further arranged on the foaming layer.
In one or more embodiments, the MCU is disposed on a circuit board, which is glued for waterproof insulation.
Has the advantages that: the utility model provides a safe type electric water heater forms first safety protection through the earth leakage protection plug to protection through the temperature limiter can directly break off circuit formation second way protection under the overtemperature environment, protects electric water heater through multilayer protection, forms safe type electric water heater, safe and reliable.
Drawings
Fig. 1 is a schematic diagram of a circuit structure of a safety electric water heater according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a safety electric water heater according to an embodiment of the present invention.
Detailed Description
The application scheme is further described below with reference to the accompanying drawings:
example (b):
referring to the attached drawings 1-2, the safety electric water heater comprises a power line 1, a rectifier 2, a temperature limiter 3, a heating body 4 and an MCU 5, wherein the power line 1 is connected with the input end of the rectifier 2, the output end of the rectifier 2 is connected with the temperature limiter 3 in series, the output end of the temperature limiter 3 is connected with the heating body 4, the temperature limiter 3 is electrically connected with the MCU 5, and a leakage protection plug 7 is arranged on the power line 2.
Preferably, four pins P1, P2, P3 and P4 are arranged on the temperature limiter 3, the P1, the P2 and the P3 are input ends, the P4 is an output end, two outputs of the rectifier 2 are connected with the P1 and the P2 of the temperature limiter 3, the MCU 5 is connected with the P3, and the output end P4 is connected with the heating element 4.
Further, the temperature limiter 3 is a manual reset temperature limiter with the model number of KSD 302250V-16A 93 ℃, a reset button is arranged on the temperature limiter 3, and the manual reset temperature limiter is directly applied to the prior art and is not shown in the figure.
Further, the temperature control device is also provided with a temperature detection device 6, wherein the temperature detection device 6 is connected with the input end of the MCU 5, and the MCU 5 is connected with the input end of the temperature limiter 3.
Furthermore, the heating device is also provided with a driving module, the output end of the driving module is connected with the heating body 4 in series, and the control end of the driving module is connected with the MCU 5.
Further, the heating body 4 is an electric heating tube.
Further, a heat sink 21 for dissipating heat from the rectifier 2 is provided on the rectifier 2 to prevent the rectifier 2 from being overheated, to improve the life of the rectifier, and to reduce after-sales repair, and the heat sink 21 is a direct application of the conventional structure, and is not shown here.
Further, a heat radiation fan 22 for radiating heat of the rectifier 2 is provided.
Furthermore, the fireproof door is also provided with an inner container 9 and an outer shell 8, a foaming layer 81 is arranged between the inner container 9 and the outer shell 8, and fireproof cotton is further arranged on the foaming layer 81.
Further, the MCU is arranged on the circuit board, and the circuit board is filled with glue to be waterproof and insulated.
The above preferred embodiments should be considered as examples of the embodiments of the present application, and technical deductions, substitutions, improvements and the like similar to, similar to or based on the embodiments of the present application should be considered as the protection scope of the present patent.
Claims (9)
1. The safety electric water heater is characterized by comprising a power line, a rectifier, a temperature limiter, a heating body and an MCU (microprogrammed control unit), wherein the power line is connected with the input end of the rectifier, the output end of the rectifier is connected with the temperature limiter in series, the output end of the temperature limiter is connected with the heating body, the temperature limiter is electrically connected with the MCU, and a leakage protection plug is arranged on the power line.
2. The safety electric water heater according to claim 1, wherein the temperature limiter is a manual reset temperature limiter, and a reset button is arranged on the temperature limiter.
3. The safety type electric water heater according to claim 1, further comprising a temperature detection device, wherein the temperature detection device is connected to an input end of the MCU, and the MCU is connected to an input end of the temperature limiter.
4. The safety type electric water heater according to claim 1, further comprising a driving module, wherein the output end of the driving module is connected in series with the heating body, and the control end of the driving module is connected to the MCU.
5. The safety electric water heater according to claim 1, wherein the heating body is an electric heating tube.
6. The safety electric water heater according to claim 1, wherein a heat sink is provided on the rectifier for dissipating heat from the rectifier.
7. The safety electric water heater according to claim 6, further comprising a heat dissipating fan for dissipating heat from the rectifier.
8. The safety type electric water heater according to claim 1, further comprising an inner container and an outer shell, wherein a foaming layer is disposed between the inner container and the outer shell, and the foaming layer is further provided with fireproof cotton.
9. The safety electric water heater according to claim 1, wherein the MCU is disposed on a circuit board, and the circuit board is glued for waterproof insulation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019213975370 | 2019-08-27 | ||
| CN201921397537 | 2019-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211451363U true CN211451363U (en) | 2020-09-08 |
Family
ID=72315542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921519668.1U Expired - Fee Related CN211451363U (en) | 2019-08-27 | 2019-09-12 | Safety electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211451363U (en) |
-
2019
- 2019-09-12 CN CN201921519668.1U patent/CN211451363U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2493486A (en) | Small sink and PTC heater for heating liquid therein | |
| CN206713090U (en) | A kind of anticreep encapsulation Electric radiant Heating Film having a safety feature | |
| CN211451363U (en) | Safety electric water heater | |
| CN104053257A (en) | PTC heating rod and manufacturing method thereof | |
| CN102158995B (en) | Low-temperature radiation electric heating mulching film and making method thereof | |
| CN204157085U (en) | A kind of snow melt heating cable | |
| CN104033953A (en) | Low-voltage heating floor heating device and control method | |
| CN205336568U (en) | Novel shielding formula electromagnetic heating device | |
| CN2469363Y (en) | Safety electrical heater | |
| CN203251447U (en) | Mica plate with electric heating wire | |
| CN211204452U (en) | Heater with anti-creeping function | |
| CN206946978U (en) | A kind of household power cable and cable tube integrated apparatus | |
| CN204157083U (en) | Lead heating cable for a kind of moistureproof pair | |
| CN204130319U (en) | A kind of high voltage isolation transformer | |
| CN103776082A (en) | PTC (Positive Temperature Coefficient) electric heating floor film and manufacturing method thereof | |
| CN208029112U (en) | A kind of heated by electrothermal film vacuum envelope | |
| CN205065900U (en) | Carbon fiber heating cable's safe connected system | |
| CN206620061U (en) | A kind of common DC bus servo drive system | |
| CN205279220U (en) | Warm up hot rail of carbon | |
| CN210579262U (en) | Graphene heating membrane assembly | |
| CN202077207U (en) | Double-insulated heating element for water heater | |
| CN205959669U (en) | A cable for warm up electricly | |
| CN207720438U (en) | A kind of high temperature electric-heating belt | |
| CN218267898U (en) | Solar pipeline freeze-proof device | |
| CN107013781A (en) | A kind of hot-water line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200908 Termination date: 20210912 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |