CN208253932U - Electric water heater - Google Patents
Electric water heater Download PDFInfo
- Publication number
- CN208253932U CN208253932U CN201820295054.9U CN201820295054U CN208253932U CN 208253932 U CN208253932 U CN 208253932U CN 201820295054 U CN201820295054 U CN 201820295054U CN 208253932 U CN208253932 U CN 208253932U
- Authority
- CN
- China
- Prior art keywords
- electric heater
- liner
- leakage protective
- earth leakage
- protective resistance
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 230000001681 protective effect Effects 0.000 claims description 56
- 238000009413 insulation Methods 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 13
- 238000004321 preservation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 230000006837 decompression Effects 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 2
- 210000000232 gallbladder Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Control Of Resistance Heating (AREA)
- Resistance Heating (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The utility model relates to an electric water heater field discloses an electric water heater, including inner bag, heat preservation, electric heater and inlet outlet, all the concatenation has earth leakage protection resistance in inner bag and/or electric heater's the ground connection circuit. When the water heater leaks electricity and the grounding wire has a virtual connection problem, the leakage protection resistor reduces the leakage voltage in the grounding circuit of the electric water heater to be below the safe voltage and then is grounded through the grounding wire of the power cord, so that the voltage transmitted to other household appliances is smaller than the safe voltage, and the influence of the electric water heater on the other household appliances due to the leakage electricity is weakened; when other household appliances leak electricity, even if the grounding wire has a virtual connection problem, the leakage voltage conducted to the electric water heater by other household appliances through the grounding wire is divided by the leakage protection resistor, so that the leakage voltage conducted to the electric water heater is reduced to be below the safe voltage, the electric water heater is effectively protected from the leakage of other household appliances, and the personal safety of users is further ensured.
Description
Technical field
The utility model relates to field of water heaters more particularly to a kind of electric heaters.
Background technique
Electric heater is household electrical appliance, including liner, electric heater, wraps up the insulating layer and shell of the liner.In order to
Ensure user's personal safety, electric heater needs to carry out earth leakage protective.
Electric heater realizes the earth leakage protective to Inlet and outlet water by anti-electric wall construction in the prior art, particular by certain
The isolation water column of length forms the biggish water resistance of resistance value and electrical leakage voltage is down to safe voltage using electric resistance partial pressure principle
Below.
Meanwhile to prevent liner and electric heater electrical leakage from the water in liner being caused to charge, liner and electricity add in the prior art
Hot device is to realize earth leakage protective by ground connection.
The earth lead of each household electrical appliance in Most users residence is to interconnect at present, electrical leakage problems occurs in electric heater
When, once earth lead is not grounded really and forms virtual connection, other household electrical appliance can be made to charge by earth lead；?
When other household electrical appliance leak electricity, also electric heater can be made electrical leakage problems also occur by earth lead, above-mentioned two situations are all
User be will affect using electric heater, and exist to the personal safety of user and threaten.
Utility model content
The purpose of this utility model is to provide a kind of electric heaters, to solve electric heater or the electric leakage of other household electrical appliance
When, it influences the use of electric heater and there are problems that threatening to the personal safety of user.
For this purpose, the utility model uses following technical scheme:
A kind of electric heater, including liner, insulating layer, electric heater and intake-outlet, which is characterized in that the liner
And/or earth leakage protective resistance is serially connected in the ground path of electric heater.
Further, it is connect after the liner and/or electric heater concatenation earth leakage protective resistance by the ground line of power supply line
Ground.
Preferably, the earth leakage protective resistance is set between the insulating layer and the liner.
Further, by flanged joint in the liner, the flange connects the electric heater equipped with electric heater
Ground terminal, the electric heater ground terminal is through the earth leakage protective resistance eutral grounding；Pipe fitting is welded on the liner, the pipe connects
Head is connected with insulation screw head by female insert, and the female insert is electrically connected with liner ground terminal, the liner ground terminal warp
The earth leakage protective resistance eutral grounding.
Preferably, the liner ground terminal concatenates the first earth leakage protective resistance, electric heater ground terminal concatenation second
It is grounded after earth leakage protective resistance.
Preferably, it is connect after the liner ground terminal and the electric heater ground terminal are in parallel through the earth leakage protective resistance
Ground.
Further, the intake-outlet front end is respectively connected with an insulation water pipe, the isolation water in the insulation water pipe
Column can make the voltage of conduction be down to safe voltage or less.
Further, the insulation water pipe is placed in the liner, and it is embedding that the other end sequentially passes through the liner, the internal thread
Part is simultaneously connected in the insulation screw head.
Preferably, the resistance value of the earth leakage protective resistance (10) is 100K Ω -150K Ω.
The utility model has the beneficial effects that the utility model uses electric resistance partial pressure principle, there is electric leakage in electric heater and ask
Topic and earth lead is when there is virtual connection problem, the electrical leakage voltage in the ground path of electric heater is reduced to by earth leakage protective resistance
It is grounded again by the earth lead of power supply line after below safe voltage, so that conduction to the voltage on other household electrical appliance is less than
Safe voltage weakens the influence that electric heater leaks electricity to other household electrical appliance, while ensure that the personal safety of user.If other
When household electrical appliance leak electricity, even if virtual connection problem occurs in earth lead, the grounded conducting wire of other household electrical appliance is conducted to electric heating
The electrical leakage voltage of hydrophone, it will by earth leakage protective electric resistance partial pressure, so that the electrical leakage voltage of conduction to electric heater is down to safe electricity
Pressure is not hereinafter, be effectively protected electric heater is influenced by the electric leakage of other household electrical appliance, and then has ensured the person peace of user
Entirely.
Detailed description of the invention
Fig. 1 is earth leakage protective resistance and electric heater described in the utility model embodiment one, liner, between earth lead
Attachment structure schematic diagram；
Fig. 2 is the structural schematic diagram of electric heater described in the utility model；
Fig. 3 is the location diagram of the utility model female insert Yu liner ground terminal；
Fig. 4 is the connection relationship diagram of earth leakage protective resistance described in the utility model embodiment one；
Fig. 5 is the connection relationship diagram of earth leakage protective resistance described in the utility model embodiment two；
Fig. 6 is the connection relationship diagram of earth leakage protective resistance described in the utility model embodiment three；
Fig. 7 is the connection relationship diagram of earth leakage protective resistance described in the utility model embodiment four.
In figure:
1, liner；2, electric heater ground terminal；3, electric heater；4, flange；5, water stream channel；6, insulate screw head；7, interior
Silk inserts；8, liner ground terminal；9, water pipe；
10, earth leakage protective resistance；101, the first earth leakage protective resistance；102, the second earth leakage protective resistance；
20, earth lead；
30, power supply line；301, earth lead；
40, insulating layer.
Specific embodiment
Further illustrate the technical solution of the utility model below with reference to the accompanying drawings and specific embodiments.
Embodiment one
As shown in Figures 1 to 4, a kind of electric heater, including liner 1, electric heater 3, power supply line 30 are present embodiments provided,
It is serially connected with earth leakage protective resistance 10 in the ground path of the liner 1 and electric heater 3, and is electrically connected to the power supply line 30
Earth lead 301.
The present embodiment realizes the principle for using electric resistance partial pressure, by connecing for electric heater by setting earth leakage protective resistance 10
Electrical leakage voltage in ground route is reduced to after safe voltage or less and is grounded again by the earth lead 301 of power supply line 30, in electricity
When electrical leakage problems occurs in water heater, even if virtual connection problem occurs in earth lead 301, by being serially connected with liner 1, on electric heater 3
Earth leakage protective resistance 10 be depressured, the resistance value of earth leakage protective resistance (10) is 100K Ω -150K Ω so that conduction to its
Voltage on his household electrical appliance is less than safe voltage, weakens the influence that electric heater leaks electricity to other household electrical appliance, and protect
The personal safety of user.
If other household electrical appliance leak electricity, even if virtual connection problem occurs in earth lead 301, other household electrical appliance are passed
It is directed at the electrical leakage voltage of electric heater, it will divided by earth leakage protective resistance 10, so that electrical leakage voltage of the conduction to electric heater
Safe voltage is down to hereinafter, be effectively protected electric heater is not influenced by the electric leakage of other household electrical appliance, and then has ensured use
The personal safety at family.
As shown in Figure 1, the electric heater further includes wrapping up insulating layer liner 1 setting and be made of insulating material
40, the earth leakage protective resistance 10 is set between the insulating layer 40 and the liner 1.By the way that earth leakage protective resistance 10 is set to
It between liner 1 and insulating layer 40, and is grounded again after the decompression of earth leakage protective resistance 10, so that electric heater electric leakage occurs and asks
When topic, it can guarantee that the shell of electric heater is uncharged or shell institute is with voltage and be less than safe voltage, will not threaten
To the personal safety of user.
As depicted in figs. 1 and 2, electric heater 3 is connected to liner 1 by flange 4, which is connected with electric heater and connects
Ground terminal 2, the electric heater ground terminal 2 of electric heater 3 are electrically connected to the earth lead of power supply line 30 through earth leakage protective resistance 10
301, it can be realized when the electric heater 3 leaks electricity, decompression carried out to its electrical leakage voltage and by the near safe voltage of electrical leakage voltage
Hereinafter, realizing the leakage protection to electric heater 3, while it can be avoided other household electrical appliance and having height because of electric heater electric leakage
In the voltage of safe voltage value, while it can be avoided electric heater and being had because of the electric leakage of other household electrical appliance and being higher than safe voltage value
Voltage, ensured the personal safety of user.
As shown in figures 1 and 3, pipe fitting is welded on the liner 1, the pipe fitting is connected with by female insert 7
Insulate screw head, and the female insert 7 is electrically connected with liner ground terminal 8, and the liner ground terminal 8 is through the earth leakage protective resistance
10 are electrically connected to the earth lead 301.The connection for realizing pipe fitting between the screw head that insulate by female insert 7, and can
Guarantee the sealing effect at the two link position.In the present embodiment, there are two pipe fitting is set, respectively water heater intake-outlet,
Each pipe fitting is respectively connected with one end and protrudes into liner 1 and be equipped with the water pipe 9 of water stream channel 5, formed in the water stream channel 5 every
The voltage of conduction can be made to be down to safe voltage or less from water column.The water pipe 9 refers to water inlet pipe and the water outlet of electric heater
Pipe, the decompression principle that water column is isolated is anti-electricity wall principle in the prior art, is divided by the way that water column is isolated, so that from interior
The voltage of the water institute band flowed out in gallbladder 1 is lower than safe voltage, will not the personal safety of user impact.
One end of the liner ground terminal 8 is electrically connected with the female insert 7 for being connected to one of them pipe fitting
It connects, and the other end passes through the corresponding insulation screw head and is connected to the earth leakage protective resistance 10, and earth leakage protective resistance 10
It is electrically connected to earth lead 301, and then realizes that liner ground terminal 8 is electrically connected to earth lead 301 through earth leakage protective resistance 10, most
The earth leakage protective to liner 1 is realized eventually.
As shown in figure 4, in this implementation, through the leakage after the liner ground terminal 8 and 2 parallel connection of electric heater ground terminal
Electric protection resistance 10 is electrically connected to the earth lead 301, that is, the earth leakage protective electricity being serially connected in the ground path of electric heater 3
Resistance 10 and the earth leakage protective resistance 10 being serially connected in the ground path of liner 1 refer to same earth leakage protective resistance 10.
Embodiment two
The difference between this embodiment and the first embodiment lies in as shown in figure 5, being serially connected in the ground path of electric heater 3
What earth leakage protective resistance 10 and the earth leakage protective resistance 10 being serially connected in the ground path of liner 1 referred to is not same resistance, specifically
, the earth leakage protective resistance 10 being serially connected in the ground path of liner 1 is the first earth leakage protective resistance 101, is serially connected with electric heating
Earth leakage protective resistance 10 in the ground path of device 3 is the second earth leakage protective resistance 102.
The ground connection is connected to after the first earth leakage protective resistance 101 and 102 parallel connection of the second earth leakage protective resistance
Conducting wire 301.
Further, also can be as shown in Figure 6 to 7, possible embodiment three and example IV is set forth, it only will be interior
Earth leakage protective resistance (10) are serially connected in the ground path of gallbladder；Or only will be serially connected in the ground path of electric heater electric leakage protect
It protects resistance (10).
Obviously, the above embodiments of the present invention is used for the purpose of clearly illustrating examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention.For those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways.There is no need and unable to give all embodiments
Exhaustion.Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc., should be included in
Within the protection scope of the utility model claims.
Claims (9)
1. a kind of electric heater, including liner (1), insulating layer (40), electric heater (3) and intake-outlet, which is characterized in that institute
It states and is serially connected with earth leakage protective resistance (10) in the ground path of liner (1) and/or electric heater (3).
2. electric heater according to claim 1, which is characterized in that the liner (1) and/or electric heater (3) concatenation
It is grounded after earth leakage protective resistance by the ground line (301) of power supply line (30).
3. according to claim 1 or 2 any electric heaters, which is characterized in that the earth leakage protective resistance (10) sets
Between the insulating layer (40) and the liner (1).
4. according to claim 1 or 2 any electric heaters, which is characterized in that the electric heater (3) passes through flange
(4) it is connected to the liner (1), the flange (4) is equipped with electric heater ground terminal (2), the electric heater ground terminal (2)
It is grounded through the earth leakage protective resistance (10)；It is welded with pipe fitting on the liner (1), the pipe fitting passes through female insert
(7) it is connected with insulation screw head, the female insert (7) is electrically connected with liner ground terminal (8), and the liner ground terminal (8) is through institute
State earth leakage protective resistance (10) ground connection.
5. electric heater according to claim 4, which is characterized in that first electric leakage of liner ground terminal (8) concatenation is protected
Shield resistance (101), the electric heater ground terminal (2) concatenate the second earth leakage protective resistance (102) and are grounded afterwards.
6. electric heater according to claim 4, which is characterized in that the liner ground terminal (8) and the electric heater
It is grounded after ground terminal (2) is in parallel through the earth leakage protective resistance (10).
7. any electric heater according to claim 5 or 6, which is characterized in that the intake-outlet front end is all connected with
There is an insulation water pipe, the isolation water column in the insulation water pipe can make the voltage of conduction be down to safe voltage or less.
8. electric heater according to claim 7, which is characterized in that the insulation water pipe is placed in the liner (1), separately
One end sequentially passes through the liner (1), the female insert (7) and is connected in the insulation screw head.
9. electric heater according to claim 7, which is characterized in that the resistance value of the earth leakage protective resistance (10) is 100K
Ω-150KΩ。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820295054.9U CN208253932U (en) | 2018-03-02 | 2018-03-02 | Electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820295054.9U CN208253932U (en) | 2018-03-02 | 2018-03-02 | Electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208253932U true CN208253932U (en) | 2018-12-18 |
Family
ID=64607734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820295054.9U Active CN208253932U (en) | 2018-03-02 | 2018-03-02 | Electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208253932U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028556A (en) * | 2018-03-02 | 2018-12-18 | 青岛经济技术开发区海尔热水器有限公司 | Electric water heater |
-
2018
- 2018-03-02 CN CN201820295054.9U patent/CN208253932U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028556A (en) * | 2018-03-02 | 2018-12-18 | 青岛经济技术开发区海尔热水器有限公司 | Electric water heater |
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