CN209541188U - A kind of device for preventing electrical shock of electric water heater and electric heater - Google Patents
A kind of device for preventing electrical shock of electric water heater and electric heater Download PDFInfo
- Publication number
- CN209541188U CN209541188U CN201920248431.8U CN201920248431U CN209541188U CN 209541188 U CN209541188 U CN 209541188U CN 201920248431 U CN201920248431 U CN 201920248431U CN 209541188 U CN209541188 U CN 209541188U
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- water
- switch
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- outer tube
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 230000035939 shock Effects 0.000 title claims abstract description 24
- 239000000498 cooling water Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000005389 magnetism Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 230000008595 infiltration Effects 0.000 abstract description 3
- 238000001764 infiltration Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model embodiment discloses a kind of device for preventing electrical shock of electric water heater and electric heater, the anti-electric shock apparatus includes power-supply control unit and switch block, power-supply control unit includes 3-phase plug, AC-DC converter, normally closed relay, control loop and three-phase socket, switch block includes control switch and switch control component, control switch is arranged in control loop, the water mixing valve of switch control component connection electric heater, when water mixing valve is opened, control switch is closed by switch control component, when water mixing valve is closed, control switch is disconnected by switch control component, electric heater is powered off when realization water, automatic control purpose of the idle to electric water heater heating, ensure that electric heater using safe, it is energy-efficient, even if the operating mode ensure that the splashing infiltration or leakage for minimum probability occur When water causes control switch short circuit, it can also realize and electric heater is automatically powered off, effectively ensure user's personal safety.
Description
Technical field
The utility model embodiment is related to field of home appliance technology, and in particular to a kind of device for preventing electrical shock of electric water heater and
Electric heater.
Background technique
In recent years, the sales volume of China's electric heater continues to increase rapidly speed, electric heater using safe concerning hundreds of millions
The life security of family and happy problem.Many water heater products do not have anti-electricity wall and earth leakage circuit-breaker skill currently on the market
Art, even if there is such technology, with the increase of service life, safety coefficient can also reduce year by year, for users, judge its peace
Full performance is extremely difficult, once failure, it will to artificial at fatal risk.And emerging water power isolation technology, although significantly
The safety coefficient of water heater is improved, but its energy consumption is also substantially improved therewith.In addition, by professional, construction quality and dimension
The restriction in period is protected, the validity of the ground line of domestic, electric water heater is difficult to ensure, keeps the leakage of many electric heaters conformal with empty
If there are some potential safety problemss.
Utility model content
For this purpose, the utility model embodiment provides a kind of device for preventing electrical shock of electric water heater and electric heater, it is existing to solve
Some electric heater protection against electric shocks and the problem that leakage protection effect is poor, safety is poor, energy consumption is high.
To achieve the goals above, the utility model embodiment provides the following technical solutions:
In the utility model embodiment in a first aspect, propose a kind of device for preventing electrical shock of electric water heater, the protection against electric shock
Device includes power-supply control unit and switch block, and the power-supply control unit includes 3-phase plug, AC-DC converter, normally closed
Relay, control loop and three-phase socket, the 3-phase plug connect three-phase alternating current source, the ground terminal electricity of the 3-phase plug
Connect three-phase socket ground terminal, the zero line and zero line side of the 3-phase plug be electrically connected AC-DC converter and it is normally closed after
The input terminal of electric appliance, the zero line and zero line side of the output end electrical connection three-phase socket of the normally closed relay, the AC-DC become
The direct current output positive and negative anodes of parallel operation connect the positive and negative anodes of normally closed relay by control loop, and the three-phase socket is for connecting electricity
The attaching plug of water heater, the switch block include control switch and switch control component, and the control switch setting is being controlled
On circuit processed, the water mixing valve of the switch control component connection electric heater passes through switch control component when water mixing valve is opened
It is closed control switch, when water mixing valve is closed, disconnects control switch by switch control component.
Preferably, the control switch includes two groups of binding posts, the binding post fixing piece and binding post that connect with binding post
The contact button that is oppositely arranged, the button anchor connecting with contact button and it is connected to binding post fixing piece and button is fixed
First back-moving spring between part, the switch block further include outer tube, and one end of outer tube is arranged in the control switch, described
The outer tube other end is connected to water inlet pipe, and the switch control component is arranged in outer tube bore, and the switch control component includes closing
Head, second back-moving spring, locating part, third reset spring and pilot head, the head that closes are arranged in water inlet pipe exit,
Head is closed in second back-moving spring one end connection and other end connection locating part, the locating part are fixed on the end of outer tube,
The outside of locating part is arranged in the button anchor, and through-hole, the third reseting spring sleeve are provided among the locating part
Be located at the inside of second back-moving spring and one end connect with head is closed, in the through-hole that the other end extends among locating part with lead
Pressure head connects, the pilot head and button anchor abutting contact, is provided on the outer tube for being connected to electric heater cold water
The branch pipe of pipe is provided with the water collection chamber being connected to branch pipe on the outer tube tube body, and the outside for closing head is arranged in the water collection chamber
And multiple permeable holes by being arranged on outer tube wall are connected to outer tube bore.
Preferably, the control switch is normally closed type magnetic switch, and it is attached that the normally closed type magnetic switch is fixed on water mixing valve
At close water pipe, the switch control component is permanent magnet, and the permanent magnet is arranged on water mixing valve valve body.
Preferably, be provided with high resiliency gasket between the button anchor and locating part, the pilot head with it is high-elastic
Property gasket abutting contact.
Preferably, the outer tube end has been connected through a screw thread fastening nut, between the fastening nut and outer tube end
It is formed with cavity, the control switch is arranged in the cavity between fastening nut and outer tube end, and the two of the control loop
Root conducting wire is connect by the opening on fastening nut across with two groups of binding posts.
Preferably, sealing ring is provided between the outer tube end and locating part.
Preferably, status indicator lamp is provided in the connection line of the normally closed relay and three-phase socket.
In the second aspect of the utility model embodiment, a kind of electric heater is proposed, the electric heater includes as above
Any device for preventing electrical shock of electric water heater.
Preferably, the electric heater further includes that electric heater main body, hot-water line, cold water pipe, water mixing valve and power supply are inserted
Head, cooling water inlet and hot water outlet are provided in the electric heater main body, and the cold water pipe is connected to cooling water inlet, the hot water
Pipe is connected to hot water outlet, and the junction of cold water pipe and hot-water line is arranged in the water mixing valve, and the attaching plug connection three-phase is inserted
Seat.
The utility model embodiment has the advantages that
A kind of device for preventing electrical shock of electric water heater that the utility model embodiment proposes, including power-supply control unit and switching group
Part, power-supply control unit include 3-phase plug, AC-DC converter, normally closed relay, control loop and three-phase socket, switch
Component includes control switch and switch control component, and three-phase alternating current is converted into safe DC low-voltage by AC-DC converter
And normally closed relay is controlled by control loop, control switch is set in control loop, and the folding of control switch utilizes electric hot water
Device water mixing valve carries out automatically controlling when opening and closing by switch control component, is powered off when realization water to electric heater, idle is to electricity
The automatic control purpose of water heater heating, can effectively ensure electric heater using safe, energy-efficient, which guarantees
Even if there is the splashing infiltration of minimum probability or when leak causes control switch short circuit, can also realize to electric heater carry out from
Dynamic circuit breaker electricity, effectively ensures user's personal safety.
Detailed description of the invention
It, below will be to reality in order to illustrate more clearly of the embodiments of the present invention or technical solution in the prior art
It applies mode or attached drawing needed to be used in the description of the prior art is briefly described.It should be evident that attached in being described below
Figure is only exemplary, for those of ordinary skill in the art, without creative efforts, can be with
It is extended according to the attached drawing of offer and obtains other implementation attached drawings.
Structure depicted in this specification, ratio, size etc., only to cooperate the revealed content of specification, for
Those skilled in the art understands and reads, and is not intended to limit the utility model enforceable qualifications, therefore does not have technology
On essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the utility model institute energy
Under the effect of generation and the purpose that can reach, it should all still fall in the revealed technology contents of the utility model and obtain the model that can cover
In enclosing.
Fig. 1 is a kind of structural schematic diagram for device for preventing electrical shock of electric water heater that the utility model embodiment 1 provides；
Fig. 2 is a kind of structural representation for device for preventing electrical shock of electric water heater switch block that the utility model embodiment 1 provides
Figure；
Fig. 3 is a kind of structure for device for preventing electrical shock of electric water heater switch control component that the utility model embodiment 1 provides
Schematic diagram.
Fig. 4 is a kind of structural schematic diagram for device for preventing electrical shock of electric water heater that the utility model embodiment 2 provides.
In figure: power-supply control unit 1, water inlet pipe 3, electric heater main body 4, cold water pipe 5, hot-water line 6, mixes switch block 2
Water valve 7, attaching plug 8,3-phase plug 11, AC-DC converter 12, normally closed relay 13, control loop 14, three-phase socket 15,
Status indicator lamp 16, control switch 21, outer tube 22, switch control component 23, binding post 211, binding post fixing piece 212, contact
It is button 213, button anchor 214, first back-moving spring 215, high resiliency gasket 216, branch pipe 221, water collection chamber 222, permeable
Head 231, second back-moving spring 232, locating part 233, third reset spring, sealing ring 225, are closed at fastening nut 224 in hole 223
234, pilot head 235.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily, it is clear that described embodiment is
The utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the utility model protection
Range.
Embodiment 1
As shown in Figure 1, a kind of device for preventing electrical shock of electric water heater that the present embodiment proposes, including power-supply control unit 1 and open
Close component 2.
Power-supply control unit 1 include 3-phase plug 11, AC-DC converter 12, normally closed relay 13, control loop 14 and
Three-phase socket 15.3-phase plug 11 connects three-phase alternating current source, the ground wire of the ground terminal electrical connection three-phase socket 15 of 3-phase plug 11
End, the zero line and zero line side of 3-phase plug 11 are electrically connected the input terminal of AC-DC converter 12 and normally closed relay 13, normally closed
The zero line and zero line side of the output end electrical connection three-phase socket 15 of relay 13, the direct current output of AC-DC converter 12 are positive and negative
Pole connects the positive and negative anodes of normally closed relay 13 by control loop 14, in the connection line of normally closed relay 13 and three-phase socket 15
It is provided with status indicator lamp 16, is used to indicate the safe condition of equipment.
AC-DC converter 12 in the present embodiment uses AC-DC 24V converter, and three-phase alternating current is converted into low-pressure direct
Flow 24V power supply, control normally closed relay 13 using safe voltage, correspondingly, normally closed relay 13 using DC 24V it is normally closed after
Electric appliance 13, normally closed relay 13 are internally provided with normally closed and normally open contact, the current switching that the folding of contact passes through electromagnetic coil
It is controlled, the normally closed relay 13 in the present embodiment is defaulted as normally-closed contact, connects normally-closed contact by wiring, coil does not lead to
When electric, normally-closed contact closure, coil is powered, and normally-closed contact disconnects.
As shown in Fig. 2, switch block 2 includes control switch 21, outer tube 22 and switch control component 23.Control switch 21
It is arranged in control loop 14, the binding post fixing piece that control switch 21 includes two groups of binding posts 211, connect with binding post 211
212, the contact button 213 being oppositely arranged with binding post 211, the button anchor 214 and connection that are connect with contact button 213
First back-moving spring 215 between binding post fixing piece 212 and button anchor 214.
One end of outer tube 22 is arranged in control switch 21, and 22 other end of outer tube is connected to water inlet pipe 3, as shown in figure 3, switch control
Component 23 processed is arranged in 22 inner cavity of outer tube, and switch control component 23 includes closing head 231, second back-moving spring 232, locating part
233, third reset spring 234 and pilot head 235 close head 231 and are arranged in 3 exit of water inlet pipe, second back-moving spring 232
Head 231 is closed in one end connection and other end connection locating part 233, locating part 233 are fixed on the end of outer tube 22,22 end of outer tube
It is provided with sealing ring 225 between locating part 233, button anchor 214 is arranged in the outside of locating part 233, in locating part 233
Between be provided with through-hole, third reset spring 234 is set in the inside of second back-moving spring 232 and one end and closes the company of head 231
It connects, is connect in the through-hole that the other end extends among locating part 233 with pilot head 235, button anchor 214 and locating part 233
Between be provided with high resiliency gasket 216, pilot head 235 and 216 abutting contact of high resiliency gasket.
It is provided with the branch pipe 221 for being connected to electric heater cold water pipe 5 on outer tube 22, is provided with and props up on 22 tube body of outer tube
The water collection chamber 222 that pipe 221 is connected to, water collection chamber 222 are arranged in the outside for closing head 231 and by being arranged on 22 inner wall of outer tube
Multiple permeable holes 223 are connected to 22 inner cavity of outer tube.
22 end of outer tube has been connected through a screw thread fastening nut 224, and fastening nut 224 and outer tube are formed between 22 end
Cavity, control switch 21 are arranged in the cavity between 22 end of fastening nut 224 and outer tube, two conducting wires of control loop 14
It is connect by the opening on fastening nut 224 across with two groups of binding posts 211.
The device for preventing electrical shock of electric water heater of the present embodiment, by the attaching plug 8 of electric heater and three-phase socket 15 when use
Grafting is powered, and when unused water, normally closed relay 13 is defaulted as normally closed, and electric heater remains powered on state, works as electric heater
After water mixing valve 7 is opened, 3 side of water inlet pipe and 221 side of branch pipe generate pressure difference, and the cold water in water inlet pipe 3, which is pushed open, closes head 231, by
Permeable hole 223 enters in water collection chamber 222 and flows into electric heater through branch pipe 221, while closing head 231 and driving third reset spring
234 and pilot head 235 it is mobile and force in high resiliency gasket 216, push contact button 213 and button anchor 214
So that contact button 213 is connected to binding post 211, control switch 21 is closed, and control loop 14 forms access, normally closed relay 13
Electromagnetic coil be powered, normally-closed contact disconnect, electric heater power-off；When electric water mixing valve of water heater 7 close after, 3 side of water inlet pipe with
221 lateral pressure difference of branch pipe disappears, and under the action of second back-moving spring 232, closes 231 return of head closing water inlet, third is multiple
Position spring 234 and 235 return of pilot head, under the action of first back-moving spring 215, contact button 213 and button anchor
214 returns, control switch 21 disconnect, and control loop 14 forms open circuit, the electromagnetic coil power-off of normally closed relay 13, normally-closed contact
Closure, electric heater is once again powered up, electric heater power-off when the variation in water pressure realization water generated when being opened and closed by water mixing valve 7,
The automatic control purpose of idle electric water heater heating.
By the way that with electric heater power supply is cut off when water, idle heats electric heater, can effectively ensure electric heater
Using safe, it is energy-efficient；By status indicator lamp can directly observation device safe condition；It is controlled using safe voltage
The on-off of circuit, non-contact electric hidden danger；Even if the operating mode ensure that the splashing infiltration for minimum probability occur or leak cause
When control switch short circuit, it can also realize and electric heater is automatically powered off, effectively ensure user's personal safety.
Embodiment 2
As shown in figure 4, a kind of device for preventing electrical shock of electric water heater that the present embodiment proposes, including power-supply control unit 1 and open
Close component 2.
Power-supply control unit 1 include 3-phase plug 11, AC-DC converter 12, normally closed relay 13, control loop 14 and
Three-phase socket 15.3-phase plug 11 connects three-phase alternating current source, the ground wire of the ground terminal electrical connection three-phase socket 15 of 3-phase plug 11
End, the zero line and zero line side of 3-phase plug 11 are electrically connected the input terminal of AC-DC converter 12 and normally closed relay 13, normally closed
The zero line and zero line side of the output end electrical connection three-phase socket 15 of relay 13, the direct current output of AC-DC converter 12 are positive and negative
Pole connects the positive and negative anodes of normally closed relay 13 by control loop 14, in the connection line of normally closed relay 13 and three-phase socket 15
It is provided with status indicator lamp 16, is used to indicate the safe condition of equipment.
Switch block 2 includes control switch 21 and switch control component 23, and control switch 21 is arranged in control loop 14,
In the present embodiment, control switch 21 uses DC 24V normally closed type magnetic switch, and normally closed type magnetic switch default connects normally closed touching
Point, when be magnetic substance close to when, normally closed type magnetic switch disconnect.Normally closed type magnetic switch is fixed on the water near water mixing valve 7
At pipe, switch control component 23 uses permanent magnet, and permanent magnet is arranged on 7 valve body of water mixing valve.
The device for preventing electrical shock of electric water heater of the present embodiment, by the attaching plug 8 of electric heater and three-phase socket 15 when use
Grafting is powered, and when unused water, normally closed relay 13 is defaulted as normally closed, and electric heater remains powered on state, when water mixing valve 7 is closed
When closing, permanent magnet is disconnected close to normally closed type magnetic switch, normally closed type magnetic switch, and control loop 14 forms open circuit, normally closed relay
The electromagnetic coil of device 13 powers off, and normally-closed contact closure, electric heater is powered；When water mixing valve 7 is opened, drive permanent magnet separate,
Normally closed type magnetic switch resets closure, and control loop 14 forms access, and the electromagnetic coil of normally closed relay 13 is powered, normally-closed contact
Disconnect, electric heater power-off, be achieved in when water electric heater power-off, idle electric water heater heating automatic control purpose.
Embodiment 3
With reference to Fig. 1 and Fig. 4, the present embodiment proposes a kind of electric heater, which includes such as embodiment 1 or implement
Any device for preventing electrical shock of electric water heater in example 2, which further includes electric heater main body 4, cold water pipe 5, hot water
Pipe 6, water mixing valve 7 and attaching plug 8, electric heater main body 4 are internally provided with thermal resistance, and attaching plug 8 connects three-phase socket
15, the shell of the ground terminal connection electric heater main body 4 of attaching plug 8, the zero line and zero line side electric-connection thermal of attaching plug 8
Resistance realizes thermal resistance heating, is provided with cooling water inlet and hot water outlet in electric heater main body 4, cold water pipe 5 be connected to cold water into
Mouthful, hot-water line 6 is connected to hot water outlet, and water mixing valve 7 is arranged in the junction of cold water pipe 5 Yu hot-water line 6, passes through anti-electric shock apparatus
Setting, to electric heater power-off, idle to the automatic control purpose of electric water heater heating when may be implemented with water.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (9)
1. a kind of device for preventing electrical shock of electric water heater, which is characterized in that the anti-electric shock apparatus includes power-supply control unit and switch
Component, the power-supply control unit include that 3-phase plug, AC-DC converter, normally closed relay, control loop and three-phase are inserted
Seat, the 3-phase plug connect three-phase alternating current source, and the ground terminal of the ground terminal electrical connection three-phase socket of the 3-phase plug is described
The zero line and zero line side of 3-phase plug are electrically connected the input terminal of AC-DC converter and normally closed relay, the normally closed relay
The zero line and zero line side of the output end electrical connection three-phase socket of device, the direct current output positive and negative anodes of the AC-DC converter pass through
Control loop connects the positive and negative anodes of normally closed relay, and the three-phase socket is used to connect the attaching plug of electric heater, described to open
Closing component includes control switch and switch control component, and the control switch is arranged in control loop, the switch control group
Part connects the water mixing valve of electric heater, when water mixing valve is opened, is closed control switch by switch control component, works as water mixing valve
When closing, disconnect control switch by switch control component.
2. a kind of device for preventing electrical shock of electric water heater according to claim 1, which is characterized in that the control switch includes two
Group binding post, the contact button being oppositely arranged with binding post, is connect with contact button the binding post fixing piece connecting with binding post
Button anchor and the first back-moving spring that is connected between binding post fixing piece and button anchor, the switch block
It further include outer tube, one end of outer tube is arranged in the control switch, and the outer tube other end is connected to water inlet pipe, the switch control
Component is arranged in outer tube bore, and the switch control component includes closing head, second back-moving spring, locating part, third to reset
Spring and pilot head, it is described to close head setting in water inlet pipe exit, second back-moving spring one end connection close head and
The other end connects locating part, and the locating part is fixed on the end of outer tube, and the outside of locating part is arranged in the button anchor,
Be provided with through-hole among the locating part, the third reset spring be set in the inside of second back-moving spring and one end with close
Head connection, the through-hole that the other end extends among locating part is interior to be connect with pilot head, and the pilot head is supported with button anchor
By contact, it is provided with the branch pipe for being connected to electric heater cold water pipe on the outer tube, is provided with and props up on the outer tube tube body
The outside for closing head and multiple permeable holes by being arranged on outer tube wall are arranged in the water collection chamber of pipe connection, the water collection chamber
It is connected to outer tube bore.
3. a kind of device for preventing electrical shock of electric water heater according to claim 1, which is characterized in that the control switch is normally closed
Formula magnetic switch, the normally closed type magnetic switch are fixed at the water pipe near water mixing valve, and the switch control component is permanent magnetism
Iron, the permanent magnet are arranged on water mixing valve valve body.
4. a kind of device for preventing electrical shock of electric water heater according to claim 2, which is characterized in that the button anchor and limit
High resiliency gasket, the pilot head and high resiliency gasket abutting contact are provided between the part of position.
5. a kind of device for preventing electrical shock of electric water heater according to claim 2, which is characterized in that the outer tube end passes through spiral shell
Line is connected with fastening nut, and cavity is formed between the fastening nut and outer tube end, and the control switch setting is fastening
In cavity between nut and outer tube end, two conducting wires of the control loop by the opening on fastening nut across with two groups
Binding post connection.
6. a kind of device for preventing electrical shock of electric water heater according to claim 2, which is characterized in that the outer tube end and limit
Sealing ring is provided between part.
7. a kind of device for preventing electrical shock of electric water heater according to claim 1, which is characterized in that the normally closed relay and three
Status indicator lamp is provided in the connection line of phase socket.
8. a kind of electric heater, which is characterized in that the electric heater includes the electric hot water as described in any in claim 1-7
Device anti-electric shock apparatus.
9. a kind of electric heater according to claim 8, which is characterized in that the electric heater further includes electric heater master
Body, hot-water line, cold water pipe, water mixing valve and attaching plug are provided with cooling water inlet in the electric heater main body and hot water go out
Mouthful, the cold water pipe is connected to cooling water inlet, and the hot-water line is connected to hot water outlet, and the water mixing valve is arranged in cold water pipe and hot water
The junction of pipe, the attaching plug connect three-phase socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920248431.8U CN209541188U (en) | 2019-02-27 | 2019-02-27 | A kind of device for preventing electrical shock of electric water heater and electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920248431.8U CN209541188U (en) | 2019-02-27 | 2019-02-27 | A kind of device for preventing electrical shock of electric water heater and electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209541188U true CN209541188U (en) | 2019-10-25 |
Family
ID=68274310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920248431.8U Expired - Fee Related CN209541188U (en) | 2019-02-27 | 2019-02-27 | A kind of device for preventing electrical shock of electric water heater and electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209541188U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306807A (en) * | 2020-04-13 | 2020-06-19 | 林智勇 | Use method of electric shock prevention device of electric water heater |
| CN111306808A (en) * | 2020-04-13 | 2020-06-19 | 林智勇 | Use method of electric shock prevention device of intelligent electric water heater |
-
2019
- 2019-02-27 CN CN201920248431.8U patent/CN209541188U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111306807A (en) * | 2020-04-13 | 2020-06-19 | 林智勇 | Use method of electric shock prevention device of electric water heater |
| CN111306808A (en) * | 2020-04-13 | 2020-06-19 | 林智勇 | Use method of electric shock prevention device of intelligent electric water heater |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 |