CN216048330U - Electric shock prevention device with current limiting function and electric water heater using same - Google Patents
Electric shock prevention device with current limiting function and electric water heater using same Download PDFInfo
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- CN216048330U CN216048330U CN202122301590.XU CN202122301590U CN216048330U CN 216048330 U CN216048330 U CN 216048330U CN 202122301590 U CN202122301590 U CN 202122301590U CN 216048330 U CN216048330 U CN 216048330U
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Abstract
The utility model provides an electric shock prevention device with a current limiting function and an electric water heater using the same, wherein the electric shock prevention device comprises: a housing having an accommodating space; the accommodating space is provided with an upper opening and a lower opening, the upper opening is used for connecting a connecting port of the electric water heater, and the lower opening is used for connecting an external water source; the memory metal flow limiting valve is arranged in the accommodating space; the memory metal flow limiting valve is used for adjusting the flow according to the temperature; and the electric shock prevention water inlet pipe is connected with the water outlet of the memory metal flow limiting valve. The electric shock prevention device integrates the memory metal current limiting valve and the electric shock prevention water inlet pipe into a whole, the memory metal current limiting valve is embedded in the shell, an external water source and the electric shock prevention water inlet pipe are communicated by the memory metal current limiting valve, and the memory metal current limiting valve is connected with a connecting port of the electric water heater through the shell, so that the electric shock prevention device is convenient to produce, install and replace by a user.
Description
Technical Field
The utility model relates to the technical field of electric water heaters, in particular to an electric shock prevention device with a current limiting function and an electric water heater using the same.
Background
The hot water output rate is one index for evaluating the energy consumption of the electric water heater, and refers to the ratio of the actual hot water output quantity to the rated capacity under the rated condition. The output rate of hot water of the existing electric water heater is generally not high, the output rate of hot water is mainly in great relation with the water inflow rate of water flow, and if the water inflow rate is large, the output rate of hot water is low, and vice versa.
In order to solve the problem of hot water output rate, some electric water heaters are additionally provided with a memory metal flow limiting valve at a water inlet pipe, the memory metal flow limiting valve can automatically adjust water flow according to the temperature of inlet water, the water flow is increased when the temperature is high, and the water flow is reduced when the temperature is low. However, the memory metal flow limiting valve is troublesome to install at present, an electricity-proof wall is required to be installed on the water heater to ensure the electricity safety, and the electricity-proof wall and the memory alloy are required to be independently installed at the position of the whole machine, so that the installation position of the whole machine needs to be independently opened, the manufacturing difficulty is increased, and the installation process is complex.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to an electric shock protection device with current limiting function, which solves at least one of the above problems.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
an electric shock prevention device with a current limiting function, comprising:
a housing having an accommodating space; the accommodating space is provided with an upper opening and a lower opening, the upper opening is used for connecting a connecting port of the electric water heater, and the lower opening is used for connecting an external water source;
the memory metal flow limiting valve is arranged in the accommodating space; the memory metal flow limiting valve is used for adjusting the flow according to the temperature;
and the electric shock prevention water inlet pipe is connected with the water outlet of the memory metal flow limiting valve.
The electric shock prevention device integrates the memory metal current limiting valve and the electric shock prevention water inlet pipe into a whole, the memory metal current limiting valve is embedded in the shell, an external water source and the electric shock prevention water inlet pipe are communicated by the memory metal current limiting valve, and the memory metal current limiting valve is connected with a connecting port of the electric water heater through the shell, so that the electric shock prevention device is convenient to produce, install and replace by a user.
Further, the electric shock prevention device further comprises a connecting ring which is arranged in the upper opening;
the outer wall of the connecting ring is hermetically connected with the inner wall of the shell, and the inner wall of the connecting ring is provided with a connecting structure matched with a connecting port of the electric water heater.
Further, the memory metal flow limiting valve is provided with a valve body, a valve chamber, a fixed assembly, a valve core, a movable cover and a memory metal spring, wherein the fixed assembly, the valve core, the movable cover and the memory metal spring are arranged in the valve chamber;
the valve core is integrally in a hollow cylinder shape, the lower end of the valve core forms a water inlet of the memory metal flow limiting valve, and the side wall of the valve core is provided with a water through hole which is communicated with the valve chamber;
the movable cover is sleeved outside the valve core, and a gap between the movable cover and the fixed component is communicated with the valve chamber and the water outlet;
the memory metal spring is sleeved outside the valve core and is abutted against the movable cover.
Further, the memory metal flow limiting valve is provided with a water outlet pipe, and the water outlet is arranged on the water outlet pipe;
the inner wall of the water outlet pipe is provided with a first step with an upward end face, and the outer wall of the water outlet pipe is provided with a second step with an upward end face.
Further, the water inlet electricity-proof assembly comprises an inner pipe and an outer pipe, the outer pipe is sleeved outside the inner pipe, and a gap is formed between the inner pipe and the outer pipe;
the top end of the inner pipe is sealed, and a first water outlet hole is formed in the position, close to the top end, of the inner pipe;
and a second water outlet hole is formed in the outer pipe close to the bottom end.
Furthermore, the outer pipe is sleeved outside the water outlet pipe, and the inner pipe is inserted in the water outlet pipe.
The utility model also provides an electric water heater, which comprises the electric shock prevention device.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:
FIG. 1 is a schematic diagram of an electric shock protection device with current limiting capability according to the present invention;
FIG. 2 is a partial schematic view of the electric shock preventing device of the present invention at the position of the memory metal current limiting valve;
fig. 3 is a schematic diagram of an electric water heater of the present invention.
Wherein: 1. an electric shock prevention device with a current limiting function comprises a current limiting function, a water heater inner container, 11, a shell, 12, a memory metal current limiting valve, 13, an electric shock prevention water inlet pipe, 14, a connecting ring, 111, an upper opening, 112, a lower opening, 121, a valve body, 122, a fixing component, 123, a valve core, 124, a movable cover, 125, a memory metal spring, 126, a water outlet pipe, 127, a water outlet, 128, a water inlet, 1261, a first step, 1262, a second step, 131, an inner pipe, 132, an outer pipe, 133, a gap, 1311, a first water outlet, 1321, a second water outlet, 21 and a connecting port.
Detailed Description
The technical solution provided by the present invention is explained in more detail below with reference to fig. 1-3.
As shown in fig. 1, the electric shock preventing apparatus with a current limiting function of the present invention includes:
a housing 11 having an accommodating space; the accommodating space is provided with an upper opening 111 and a lower opening 112, the upper opening 111 is used for connecting a connecting port of the electric water heater, and the lower opening 112 is used for connecting an external water source;
a memory metal flow limiting valve 12 disposed in the accommodating space; the memory metal flow limiting valve 12 is used for adjusting the flow according to the temperature;
and the electric shock prevention water inlet pipe 13 is connected with the water outlet 127 of the memory metal flow limiting valve 12.
The electric shock prevention device integrates the memory metal current limiting valve 12 and the electric shock prevention water inlet pipe 13 into a whole, the memory metal current limiting valve 12 is embedded in the shell, an external water source and the electric shock prevention water inlet pipe 13 are communicated by the memory metal current limiting valve 12, and the shell is connected with a connector of an electric water heater, so that the electric water heater is convenient to produce, install and replace by a user.
Wherein the connection port of the electric water heater can be a water inlet of the electric water heater.
The electric shock protection device further comprises a connecting ring 14 which is arranged in the upper opening 111;
the outer wall of the connecting ring 14 is connected with the inner wall of the shell 11 in a sealing way, and the inner wall of the connecting ring 14 is provided with a connecting structure matched with a connecting port of an electric water heater. Specifically, the connection structure may be a threaded connection structure or a snap-in connection structure.
For different models of water heaters, the sizes and the connection structures of the connection ports may not be completely the same, and by arranging the connection ring 14, different connection rings 14 can be replaced for different models of water heaters in the production process without replacing the whole memory metal flow limiting valve 12.
In actual production, the memory metal flow limiting valve 12 and the connecting ring 14 are used as embedded parts and put into an injection mold for manufacturing the shell, so that the shell is obtained.
As shown in fig. 2, the memory metal flow restriction valve has a valve body 121, a valve chamber, and a fixed assembly 122, a valve core 123, a movable cover 124 and a memory metal spring 125 disposed in the valve chamber;
the valve core 123 is integrally hollow and cylindrical, the lower end of the valve core is provided with a water inlet 128 of the memory metal flow limiting valve, and the side wall of the valve core 123 is provided with a water through hole which is communicated with the valve chamber;
the movable cover 124 is sleeved outside the valve core 123, and a gap between the movable cover 124 and the fixed component 122 is communicated with the valve chamber and the water outlet 127;
the memory metal spring 125 is sleeved outside the valve core 123, and the memory metal spring 125 abuts against the movable cover 124.
The external water source enters the water inlet 128 of the memory metal flow limiting valve 12 from the lower opening 112 of the housing, flows through the valve core 123 and flows out from the water through hole on the side wall of the valve core 123 to the valve chamber, and finally flows out from the gap between the movable cover 124 and the fixed assembly 122 to the water outlet 127. When the temperature of the inlet water decreases, the elastic coefficient of the memory metal spring 125 increases, the memory metal spring 125 can make the movable cover 124 move upwards to be stabilized at a proper position, the gap between the movable cover 124 and the fixed component 122 is reduced, and the inlet water flow of the water heater is reduced. When the temperature rises, the elastic coefficient of the memory metal spring 125 is reduced, the memory metal spring 125 can make the movable cover 124 move downwards to be stabilized at a proper position, the gap between the movable cover 124 and the fixed assembly 122 is increased, and the water inlet flow of the water heater is increased. The memory metal flow limiting valve 12 can perform self-regulation at different water inlet temperatures, and plays a role in limiting flow.
The electric shock prevention water inlet pipe 13 comprises an inner pipe 131 and an outer pipe 132, the outer pipe 132 is sleeved outside the inner pipe 131, and a gap 133 is formed between the inner pipe 131 and the outer pipe 132;
the top end of the inner pipe 131 is sealed, and a first water outlet 1311 is formed in the position, close to the top end, of the inner pipe 131;
a second outlet hole 1321 is formed in the outer pipe 132 near the bottom end.
The water flow enters the inner pipe 131 from the bottom of the inner pipe 131, flows to the top, flows out from the first water outlet hole 1311 to the gap, flows to the bottom of the gap, and flows out of the outer pipe 132 through the second water outlet hole 1321. By prolonging the water flow path, the resistance of the water inflow is increased, and the electric shock prevention effect is achieved.
As shown in fig. 2, the memory metal flow limiting valve 12 has a water outlet pipe 126, and the water outlet 127 is arranged on the water outlet pipe 126;
the inner wall of the water outlet pipe 126 is provided with a first step 1261 with an upward end face, and the outer wall of the water outlet pipe is provided with a second step 1262 with an upward end face.
The outer pipe 132 of the electric shock prevention water inlet pipe 13 is sleeved outside the water outlet pipe 126, and the inner pipe 131 is inserted in the water outlet pipe 126. The bottom end surface of the outer tube 132 abuts against the second step 1262, and the bottom end surface of the inner tube 131 abuts against the first step 1261, thereby playing a role of falling prevention.
As shown in fig. 3, the present invention further provides an electric water heater, which includes the above-mentioned electric shock protection device 1 with current limiting function, and further includes a water heater liner 2. The water heater inner container 2 is provided with a connecting port 21, the shell 11 of the electric shock prevention device 1 with the current limiting function is connected with the connecting port 21, and the electric shock prevention water inlet pipe is inserted into the water heater inner container 2.
In the description of the present invention, it is to be understood that the terms "vertical", "horizontal", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the scope of the present invention.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the utility model and to simplify the description, and unless otherwise stated the above words are not intended to have a special meaning.
The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (7)
1. An electric shock prevention device with a current limiting function, comprising:
a housing having an accommodating space; the accommodating space is provided with an upper opening and a lower opening, the upper opening is used for connecting a connecting port of the electric water heater, and the lower opening is used for connecting an external water source;
the memory metal flow limiting valve is arranged in the accommodating space; the memory metal flow limiting valve is used for adjusting the flow according to the temperature;
and the electric shock prevention water inlet pipe is connected with the water outlet of the memory metal flow limiting valve.
2. The electric shock preventing device with the current limiting function according to claim 1, wherein:
the electric shock prevention device further comprises a connecting ring which is arranged in the upper opening;
the outer wall of the connecting ring is hermetically connected with the inner wall of the shell, and the inner wall of the connecting ring is provided with a connecting structure matched with a connecting port of the electric water heater.
3. The electric shock preventing device with the current limiting function according to claim 1, wherein:
the memory metal flow limiting valve is provided with a valve body, a valve chamber, a fixed component, a valve core, a movable cover and a memory metal spring, wherein the fixed component, the valve core, the movable cover and the memory metal spring are arranged in the valve chamber;
the valve core is integrally in a hollow cylinder shape, the lower end of the valve core forms a water inlet of the memory metal flow limiting valve, and the side wall of the valve core is provided with a water through hole which is communicated with the valve chamber;
the movable cover is sleeved outside the valve core, and a gap between the movable cover and the fixed component is communicated with the valve chamber and the water outlet;
the memory metal spring is sleeved outside the valve core and is abutted against the movable cover.
4. The electric shock preventing device with the current limiting function according to claim 2, wherein:
the memory metal flow limiting valve is provided with a water outlet pipe, and the water outlet is arranged on the water outlet pipe;
the inner wall of the water outlet pipe is provided with a first step with an upward end face, and the outer wall of the water outlet pipe is provided with a second step with an upward end face.
5. The electric shock preventing device with the current limiting function according to claim 4, wherein:
the electric shock prevention water inlet pipe comprises an inner pipe and an outer pipe, the outer pipe is sleeved on the outer side of the inner pipe, and a gap is formed between the inner pipe and the outer pipe;
the top end of the inner pipe is sealed, and a first water outlet hole is formed in the position, close to the top end, of the inner pipe;
and a second water outlet hole is formed in the outer pipe close to the bottom end.
6. The electric shock preventing device with the current limiting function according to claim 5, wherein:
the outer pipe is sleeved outside the water outlet pipe, and the inner pipe is inserted in the water outlet pipe.
7. An electric water heater comprising the electric shock preventing device of any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122301590.XU CN216048330U (en) | 2021-09-23 | 2021-09-23 | Electric shock prevention device with current limiting function and electric water heater using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122301590.XU CN216048330U (en) | 2021-09-23 | 2021-09-23 | Electric shock prevention device with current limiting function and electric water heater using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216048330U true CN216048330U (en) | 2022-03-15 |
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ID=80538430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122301590.XU Active CN216048330U (en) | 2021-09-23 | 2021-09-23 | Electric shock prevention device with current limiting function and electric water heater using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216048330U (en) |
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2021
- 2021-09-23 CN CN202122301590.XU patent/CN216048330U/en active Active
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