阅读说明：本技术 一种免安装的电热水龙头 (Exempt from electric heat tap of installation ) 是由 黄生卫 于 2020-06-29 设计创作，主要内容包括：本发明公开了一种免安装的电热水龙头,包括壳体,壳体上设置有冷水进口、冷水出口和热水出口,冷水通道与热水通道的交叉处设置有调节流通方向的调节阀,热水通道包括两并列设置且底部开口的第一通道和第二通道,第二通道与冷水进口连通,第一通道与第二通道的顶部之间设置有流通孔,第一通道内设置有加热管,第一通道和第二通道的开口处之间转动设置有折弯密封盖,第一通道底部设置有弧形热敏双金属片,折弯密封盖上设置有限位框,弧形热敏双金属片穿设在限位框内。该种免安装的电热水龙头具有防烫伤保护结构,能够在水温过高时防止温度过高的水直接从热水出口喷出,并且反应迅速,有效防止烫伤。(The invention discloses an installation-free electric heating faucet which comprises a shell, wherein a cold water inlet, a cold water outlet and a hot water outlet are formed in the shell, an adjusting valve for adjusting the circulation direction is arranged at the intersection of a cold water channel and a hot water channel, the hot water channel comprises a first channel and a second channel which are arranged in parallel and are provided with openings at the bottoms, the second channel is communicated with the cold water inlet, a circulation hole is formed between the tops of the first channel and the second channel, a heating pipe is arranged in the first channel, a bent sealing cover is rotatably arranged between the openings of the first channel and the second channel, an arc-shaped thermosensitive bimetallic strip is arranged at the bottom of the first channel, a limiting frame is arranged on the bent sealing cover, and the arc-shaped thermosensitive bimetallic strip penetrates through the limiting frame. This kind of electric heat tap of exempting from to install has scald preventing protection architecture, can prevent when the temperature is too high that the high water of temperature is direct from the hot water export blowout to the reaction is rapid, effectively prevents the scald.)

1. The utility model provides an exempt from electric heat tap of installation, includes casing (1), be provided with cold water inlet (2), cold water outlet (3) and hot water outlet (4) on casing (1), be equipped with in casing (1) with cold water inlet (2) with cold water channel (5) of cold water outlet (3) intercommunication and with cold water inlet (2) with hot water channel (6) of hot water outlet (4) intercommunication, cold water channel (5) with the intersection of hot water channel (6) is provided with governing valve (7) of adjusting the circulation direction, its characterized in that: the hot water channel (6) comprises a first channel (61) and a second channel (62) which are arranged in parallel and have openings at the bottoms, the second channel (62) is communicated with the cold water inlet (2), a circulation hole (66) is formed between the tops of the first channel (61) and the second channel (62), a heating pipe (8) is arranged in the first channel (61), a bent sealing cover (9) is rotatably arranged between the openings of the first channel (61) and the second channel (62), an arc-shaped thermosensitive bimetallic strip (10) is arranged at the bottom of the first channel (61), a limiting frame (11) is arranged on the bent sealing cover (9), and the arc-shaped bimetallic strip (10) is arranged in the limiting frame (11) in a penetrating manner; when the temperature of water in the first channel (61) is too high, the arc-shaped thermosensitive bimetallic strip (10) suddenly jumps and deforms to push the limiting frame (11) upwards so that the bent sealing cover (9) blocks the opening of the first channel (61); when the water temperature in the first channel (61) is reduced, the arc-shaped thermosensitive bimetallic strip (10) jumps and deforms to push the limiting frame (11) downwards so that the bent sealing cover (9) blocks the opening of the second channel (62).

2. An electric hot water faucet free of installation as claimed in claim 1, wherein: the opening at the bottom of the second channel (62) is provided with a conical guide part (63), a vacuum area (64) is formed on the outer side of the conical guide part (63), and the side wall of the vacuum area (64) is provided with a liquid suction port (65) communicated with the first channel (61).

3. An electric hot water faucet free of installation as claimed in claim 1, wherein: an electric control cavity (12) is arranged in the shell (1), a circuit board (13) is arranged in the electric control cavity (12), a water pressure switch (14) is arranged in the first channel (61) or the second channel (62), and the water pressure switch (14) and the heating pipe (8) are connected with the circuit board (13).

4. An electric hot water faucet free of installation as claimed in claim 3, wherein: a temperature sensor (15) is arranged in the first channel (61) and close to the outlet side of the first channel (61), and the temperature sensor (15) is connected with the circuit board (13).

5. An electric hot water faucet free of installation as claimed in claim 3, wherein: the display panel (16) is arranged on the outer side of the shell (1), and the display panel (16) is connected with the circuit board (13).

6. An electric hot water faucet free of installation as claimed in claim 1, wherein: the limiting frame (11) comprises an upper limiting rod (111), a lower limiting rod (112) and a supporting rod (113), the supporting rod (113) is fixed on the bent sealing cover (9), the upper limiting rod (111) and the lower limiting rod (112) are fixed on the supporting rod (113), and the arc-shaped thermosensitive bimetallic strip (10) is arranged between the upper limiting rod (111) and the lower limiting rod (112) in a penetrating mode; when the temperature of water in the first channel (61) is too high, the sudden-jump deformation of the arc-shaped thermosensitive bimetallic strip (10) is upwards pushed in a protruding manner, the upper limiting rod (111) enables the bent sealing cover (9) to block the opening of the first channel (61), when the temperature of water in the first channel (61) is reduced, the sudden-jump deformation of the arc-shaped thermosensitive bimetallic strip (10) is downwards pushed in a protruding manner, the lower limiting rod (112) enables the bent sealing cover (9) to block the opening of the second channel (62).

7. An electric hot water faucet free of installation as claimed in claim 6, wherein: the length of the upper limiting rod (111) and the length of the lower limiting rod (112) are both larger than the width of the arc-shaped heat-sensitive bimetallic strip (10).

8. An electric hot water faucet free of installation as claimed in claim 1, wherein: and a first sealing piece (91) matched with the opening of the first channel (61) and a second sealing piece (92) matched with the opening of the second channel (62) are respectively arranged on two sides of the rotating shaft of the bent sealing cover (9).

Technical Field

The invention belongs to the technical field of electric heating faucets, and particularly relates to an installation-free electric heating faucet.

Background

Along with the gradual improvement of living standard of people, people's requirement to the living comfort is also higher and higher, and ordinary family is equipped with the water heater, and when the water heater was used, often need to put a large section cold water, could not accomplish instant heating. Therefore, an instant heating type electric heating faucet is available, and the instant heating type electric heating faucet is often used in a place where the total quantity of hot water demand is not high and the hot water needs to be discharged instantly and quickly. The common electric heating faucet is particularly suitable for being used in a kitchen, is provided with a faucet and is directly arranged on a water tank, and because the faucet without a heating function is almost arranged in the kitchen, the common electric heating faucet needs to replace the faucet without the heating function originally, so that the installation is troublesome, and the consumption cost is higher.

Therefore, the installation-free electric heating faucet is produced, the installation-free electric heating faucet can be directly sleeved on a faucet without a heating function and comprises a water inlet connected with the faucet, the water inlet is connected with a hot water outlet and a cold water outlet through a channel inside the water inlet, the pipeline is switched by a valve body, the water inlet is communicated with the cold water outlet when cold water is needed, the water inlet is communicated with the hot water outlet when hot water is needed, the water faucet is characterized in that elements such as a heating pipe, a water pressure switch and a temperature sensor are arranged in a hot water pipeline, an electric control cavity is further arranged on the water faucet, a circuit board is arranged in the electric control cavity, the heating pipe, the water pressure switch and the temperature sensor are all connected with the circuit board, the circuit board is connected with an adjusting button to control the power of the heating pipe, the circuit board is connected with a display panel to display the water temperature, the water pressure switch is communicated with a circuit when water enters the hot water pipeline, and the purpose of automatically switching on.

The temperature of the existing installation-free electric heating faucet is generally controlled by a temperature sensor, the temperature sensor is installed on the rear side of a heating pipe, when the temperature sensor senses that the temperature is too high, the heating pipe stops heating, water is not discharged, when cold water passes through the heating pipe and reaches the temperature sensor, the heating pipe heats a section of cold water early, so that even if the power is cut off immediately after the temperature is sensed to be too high, a section of water with too high temperature is flushed out from a hot water outlet, the residual temperature of the electric heating pipe can also continuously heat the hot water and the cold water later, even if a small amount of cold water on the rear side is mixed with hot water on the front side, the water temperature of the hot water outlet is still too high, and the situation of scalding is inevitably caused.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the installation-free electric heating faucet which has an anti-scald protection structure, can prevent water with overhigh temperature from being directly sprayed out from a hot water outlet when the water temperature is overhigh, has quick response and effectively prevents scald.

In order to solve the technical problem, the invention is solved by the following technical scheme: an installation-free electric heating faucet comprises a shell, wherein a cold water inlet, a cold water outlet and a hot water outlet are arranged on the shell, a cold water channel for communicating the cold water inlet with the cold water outlet and a hot water channel for communicating the cold water inlet with the hot water outlet are arranged in the shell, an adjusting valve for adjusting the circulation direction is arranged at the intersection of the cold water channel and the hot water channel, the hot water channel comprises a first channel and a second channel which are arranged in parallel and have openings at the bottoms, the second channel is communicated with the cold water inlet, a circulation hole is arranged between the tops of the first channel and the second channel, a heating pipe is arranged in the first channel, a bent sealing cover is rotatably arranged between the openings of the first channel and the second channel, and an arc-shaped thermal sensitive sheet is arranged at the bottom of the first channel, the bent sealing cover is provided with a limiting frame, and the arc-shaped thermosensitive bimetallic strip penetrates through the limiting frame; when the water temperature in the first channel is too high, the arc-shaped thermosensitive bimetallic strip jumps and deforms to push the limiting frame upwards so that the bent sealing cover blocks the opening of the first channel; when the water temperature in the first channel is reduced, the arc-shaped thermosensitive bimetallic strip jumps and deforms to push the limiting frame downwards, so that the bent sealing cover blocks the opening of the second channel. In the process of using hot water, cold water enters the second channel, then enters the first channel through the flow through hole, is heated by the heating pipe in the first channel, then flows out from the outlet of the first channel, and then flows out from the hot water outlet; when the water temperature is too high, namely the water temperature exceeds the sudden jump temperature of the arc-shaped heat-sensitive bimetallic strip, the sudden jump deformation of the arc-shaped heat-sensitive bimetallic strip pushes the limiting frame upwards to enable the bent sealing cover to block the opening of the first channel, at the moment, the opening of the second channel is opened, and cold water directly flows out through the opening of the second channel, in the flowing process, a part of hot water in the first channel can be taken away, the water with over high temperature in the first channel is prevented from directly flowing out, the purpose of preventing scald is achieved, after the opening of the second channel is opened for a period of time, when the temperature of the water outlet side of the first channel is lower than the kick temperature of the arc-shaped heat-sensitive bimetallic strip along with the gradual loss and temperature reduction of the water with the overhigh temperature in the first channel, the arc-shaped thermosensitive bimetallic strip suddenly jumps and deforms to downwards push the limiting frame to enable the bent sealing cover to block the opening of the second channel, and at the moment, the opening of the first channel continues to be opened for normal water outlet. Adopt complete physics's structure, realize the alternative switching of first passageway and second passageway through the deformation of arc heat-sensitive bimetallic strip, the reaction is rapid, has avoided the wiring problem and the delay problem of sensor and circuit, and scald preventing is effectual.

In the above technical scheme, preferably, a tapered guide portion is arranged at an opening at the bottom of the second channel, a vacuum region is formed outside the tapered guide portion, and a liquid suction port communicated with the first channel is arranged on a side wall of the vacuum region. Adopt this structure can form the vacuum area in toper guide part periphery when the opening part of second passageway goes out water, follow the hot water in the imbibition mouth suction first passageway, utilize the venturi effect to make the hot water in the first passageway with faster speed cooling to make directly can have certain promotion from the cold water temperature that the second passageway directly flows out.

In the above technical scheme, preferably, an electric control chamber is arranged in the housing, a circuit board is arranged in the electric control chamber, a water pressure switch is arranged in the first channel or the second channel, and the water pressure switch and the heating pipe are connected with the circuit board. The hydraulic switch is arranged, so that the electric heating faucet can automatically switch on a circuit when water enters the first channel or the second channel, and the power of the heating pipe is controlled by the circuit board.

In the above technical solution, preferably, a temperature sensor is disposed in the first channel near an outlet side of the first channel, and the temperature sensor is connected to the circuit board. The temperature sensor is connected with the circuit board, the circuit board can acquire the water temperature in the first channel, and the power of the heating pipe can be controlled through the controller on the circuit board.

In the above technical solution, preferably, a display panel is disposed outside the housing, and the display panel is connected to the circuit board. The display panel is used for displaying the water temperature in the first channel, so that a user can observe the water temperature conveniently.

In the above technical solution, specifically, the limiting frame includes an upper limiting rod, a lower limiting rod and a supporting rod, the supporting rod is fixed on the bent sealing cover, the upper limiting rod and the lower limiting rod are fixed on the supporting rod, and the arc-shaped thermosensitive bimetallic strip is inserted between the upper limiting rod and the lower limiting rod; when the water temperature in the first channel is too high, the arc-shaped thermosensitive bimetallic strip suddenly-jumping deformation upwards extrudes the upper limiting rod to enable the bent sealing cover to block the opening of the first channel, and when the water temperature in the first channel is reduced, the arc-shaped thermosensitive bimetallic strip suddenly-jumping deformation downwards extrudes the lower limiting rod to enable the bent sealing cover to block the opening of the second channel.

In the above technical scheme, preferably, the lengths of the upper limit rod and the lower limit rod are both greater than the width of the arc-shaped thermosensitive bimetallic strip. Because the sealing cover is bent to rotate in the process that the arc-shaped thermosensitive bimetallic strip pushes the upper limiting rod or the lower limiting rod, gaps need to be reserved in the width direction, and the support rod on the side face is prevented from interfering the arc-shaped thermosensitive bimetallic strip.

In the above technical solution, preferably, a first sealing element matched with the opening of the first channel and a second sealing element matched with the opening of the second channel are respectively arranged on the bent sealing cover at two sides of the rotating shaft. By adopting the structure, the sealing performance of the bent sealing cover matched with the opening of the first channel and the opening of the second channel is better.

Compared with the prior art, the invention has the following beneficial effects: in the process of using hot water, cold water enters the second channel, then enters the first channel through the flow through hole, is heated by the heating pipe in the first channel, then flows out from the outlet of the first channel, and then flows out from the hot water outlet; when the water temperature is too high, namely the water temperature exceeds the sudden jump temperature of the arc-shaped heat-sensitive bimetallic strip, the sudden jump deformation of the arc-shaped heat-sensitive bimetallic strip pushes the limiting frame upwards to enable the bent sealing cover to block the opening of the first channel, at the moment, the opening of the second channel is opened, and cold water directly flows out through the opening of the second channel, in the flowing process, a part of hot water in the first channel can be taken away, the water with over high temperature in the first channel is prevented from directly flowing out, the purpose of preventing scald is achieved, after the opening of the second channel is opened for a period of time, when the temperature of the water outlet side of the first channel is lower than the kick temperature of the arc-shaped heat-sensitive bimetallic strip along with the gradual loss and temperature reduction of the water with the overhigh temperature in the first channel, the arc-shaped thermosensitive bimetallic strip suddenly jumps and deforms to downwards push the limiting frame to enable the bent sealing cover to block the opening of the second channel, and at the moment, the opening of the first channel continues to be opened for normal water outlet. Adopt complete physics's structure, realize the alternative switching of first passageway and second passageway through the deformation of arc heat-sensitive bimetallic strip, the reaction is rapid, has avoided the wiring problem and the delay problem of sensor and circuit, and scald preventing is effectual.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural view of the embodiment of the invention when hot water is normally discharged.

FIG. 3 is a schematic structural diagram of water discharge when the temperature of the water in the first passage is too high according to the embodiment of the present invention.

Fig. 4 is a schematic structural view of a bent sealing cover according to an embodiment of the present invention.

Fig. 5 is a schematic structural view illustrating the engagement between the arc-shaped thermally sensitive bimetallic strip and the position-limiting frame in the low temperature state according to the embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 5, an electric heating faucet without installation comprises a housing 1, wherein a cold water inlet 2, a cold water outlet 3 and a hot water outlet 4 are arranged on the housing 1, a cold water channel 5 for communicating the cold water inlet 2 with the cold water outlet 3 and a hot water channel 6 for communicating the cold water inlet 2 with the hot water outlet 4 are arranged in the housing 1, and an adjusting valve 7 for adjusting the flowing direction is arranged at the intersection of the cold water channel 5 and the hot water channel 6. The regulating valve 7 can be any reversing valve in the prior art, and the complete structure of the regulating valve is not shown in the drawing. The hot water channel 6 comprises a first channel 61 and a second channel 62 which are arranged in parallel and have openings at the bottoms, the second channel 62 is communicated with the cold water inlet 2, a circulation hole 66 is arranged between the tops of the first channel 61 and the second channel 62, a heating pipe 8 is arranged in the first channel 61, a bent sealing cover 9 is rotatably arranged between the openings of the first channel 61 and the second channel 62, the middle part of the bent sealing cover 9 is hinged with the openings of the first channel 61 and the second channel 62, an arc-shaped thermal sensitive bimetallic strip 10 is arranged at the bottom of the first channel 61, two ends of the thermal sensitive bimetallic strip 10 are fixed on the side wall of the first channel 61, two limiting frames 11 are fixed on the bent sealing cover 9, and the arc-shaped thermal sensitive bimetallic strip 10 is arranged in the limiting frames 11 in a penetrating manner; when the temperature of water in the first channel 61 is too high, the arc-shaped thermosensitive bimetallic strip 10 suddenly jumps and deforms to push the limiting frame 11 upwards so that the bent sealing cover 9 blocks the opening of the first channel 61; when the water temperature in the first channel 61 is reduced, the arc-shaped thermosensitive bimetallic strip 10 jumps and deforms to push the limiting frame 11 downwards, so that the bent sealing cover 9 blocks the opening of the second channel 62.

In the process of using hot water, cold water enters the first channel 61 through the second channel 62 and the flow through hole 66, flows out from the outlet of the first channel 61 after being heated by the heating pipe 8 in the first channel 61, and then flows out from the hot water outlet 4; when the water temperature is too high, namely the water temperature exceeds the sudden jump temperature of the arc-shaped thermal sensitive bimetallic strip 10, the sudden jump deformation of the arc-shaped thermal sensitive bimetallic strip 10 pushes the limiting frame 11 upwards to enable the bent sealing cover 9 to block the opening of the first channel 61, at the moment, the opening of the second channel 62 is opened, cold water directly flows out through the opening of the second channel 62, in the flowing process, a part of hot water in the first channel 61 can be taken away, the water with the over-high temperature in the first channel 61 is prevented from directly flowing out, the purpose of preventing scald is achieved, after the opening of the second channel 62 is opened for a period of time, as the water with the excessive temperature in the first channel 61 is gradually lost and cooled, when the temperature of the water outlet side of the first channel 61 is lower than the kick temperature of the arc-shaped heat-sensitive bimetallic strip 10, the arc-shaped thermosensitive bimetallic strip 10 suddenly jumps and deforms to push the limiting frame 11 downwards, so that the bent sealing cover 9 blocks the opening of the second channel 62, and at the moment, the opening of the first channel 61 is continuously opened for normal water discharge. Adopt complete physics's structure, realize the alternative switching of first passageway 61 and second passageway 62 through the deformation of arc heat-sensitive bimetallic strip 10, the reaction is rapid, has avoided the wiring problem and the delay problem of sensor and circuit, and scald preventing is effectual.

The arc-shaped thermosensitive bimetallic strip 10 is formed by compounding two metal layers with different thermal expansion coefficients, when the temperature of the arc-shaped thermosensitive bimetallic strip 10 changes, the curvature of the arc-shaped thermosensitive bimetallic strip changes along with the change of the temperature, when the curvature of the arc-shaped thermosensitive bimetallic strip reaches 0, the arc-shaped thermosensitive bimetallic strip 10 can generate sudden jump, and the temperature when the sudden jump is generated is the sudden jump temperature. In this embodiment, the snap-through temperature is generally about 60 ℃, and of course, the arc-shaped thermal sensitive bimetallic strip 10 with different snap-through temperatures can be selected as required, when the snap-through temperature is lower than the snap-through temperature, the middle part of the arc-shaped thermal sensitive bimetallic strip 10 is concave downward, and when the snap-through temperature is higher than the snap-through temperature, the convex back middle part of the arc-shaped thermal sensitive bimetallic strip 10 is convex upward.

In this embodiment, the position-limiting frame 11 includes an upper position-limiting rod 111, a lower position-limiting rod 112 and a supporting rod 113, the supporting rod 113 is fixed on the bent sealing cover 9, the upper position-limiting rod 111 and the lower position-limiting rod 112 are fixed on the supporting rod 113, and the arc-shaped thermosensitive bimetal 10 is inserted between the upper position-limiting rod 111 and the lower position-limiting rod 112; when the temperature of water in the first channel 61 is too high, the arc-shaped thermal sensitive bimetallic strip 10 suddenly jumps and deforms to upwards bulge to push the upper limiting rod 111 so that the bent sealing cover 9 blocks the opening of the first channel 61, and when the temperature of water in the first channel 61 is reduced, the arc-shaped thermal sensitive bimetallic strip 10 suddenly jumps and deforms to downwards bulge to push the lower limiting rod 112 so that the bent sealing cover 9 blocks the opening of the second channel 62. Since the sealing cover 9 needs to be bent to rotate in the process that the arc-shaped thermal sensitive bimetal 10 pushes the upper limit rod 111 or the lower limit rod 112, in order to prevent the lateral support rod 113 from interfering with the arc-shaped thermal sensitive bimetal 10, some gaps need to be reserved in the width direction, and therefore, in the embodiment, the lengths of the upper limit rod 111 and the lower limit rod 112 are both greater than the width of the arc-shaped thermal sensitive bimetal 10.

A tapered guide part 63 is arranged at the opening at the bottom of the second channel 62, a vacuum area 64 is formed outside the tapered guide part 63, and a liquid suction port 65 communicated with the first channel 61 is arranged on the side wall of the vacuum area 64. When water is discharged from the opening of the second channel 62, a vacuum area 64 is formed on the periphery of the conical guide part 63, hot water in the first channel 61 is sucked out from the liquid suction port 65, the hot water in the first channel 61 is cooled at a higher speed by utilizing the venturi effect, and the temperature of cold water directly flowing out of the second channel 62 can be increased to a certain extent.

In order to improve the sealing performance of the bent sealing cover 9 in cooperation with the first sealing element 91 or the second channel 62, a first sealing element 91 matched with the opening of the first channel 61 and a second sealing element 92 matched with the opening of the second channel 62 are respectively arranged on the bent sealing cover 9 at two sides of the rotating shaft, wherein the first sealing element 91 is an annular elastic sealing ring, and the second sealing element 92 is a cylindrical elastic plug.

An electric control cavity 12 is arranged at the top of the first channel 61 and the second channel 62 in the shell 1, and a circuit board 13 is arranged in the electric control cavity 12. In order to automatically energize the hot water channel 6 when water flows through, a water pressure switch 14 is disposed in the first channel 61 or the second channel 62, the water pressure switch 14 is a pressure sensitive switch, in this embodiment, the water pressure switch 14 is disposed in the second channel 62, and the water pressure switch 14 and the heating pipe 8 are both connected to the circuit board 13. The temperature sensor 15 is arranged on the outlet side of the first channel 61 close to the first channel 61 in the first channel 61, the temperature sensor 15 is connected with the circuit board 13, the circuit board 13 is connected with the circuit board 13 through the temperature sensor 15, the circuit board 13 can obtain the water temperature in the first channel 61, the power of the heating pipe 8 can be controlled through the controller on the circuit board 13, the power of the heating pipe 8 is reduced at high temperature, and the power of the heating pipe 8 is improved at low temperature. In order to facilitate the observation and adjustment of the water temperature by the user, a display panel 16 is disposed outside the housing 1, the display panel 16 is connected to the circuit board 13, and in this embodiment, the display panel 16 is a touch screen.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.