CN212455619U

CN212455619U - Anti-scalding faucet

Info

Publication number: CN212455619U
Application number: CN202021135171.2U
Authority: CN
Inventors: 谭卫亮; 周林; 唐辉; 陈章球
Original assignee: Xiamen Panshixin Technology Co ltd
Current assignee: Xiamen Panshixin Technology Co ltd
Priority date: 2019-11-25
Filing date: 2020-06-18
Publication date: 2021-02-02
Anticipated expiration: 2030-06-18

Abstract

The utility model discloses an anti-scald tap, which comprises a shell and a mandrel; the housing extends in a first direction; a first water inlet channel for feeding cold water is formed between the outer wall of the mandrel and the inner wall of the shell, and a second water inlet channel for feeding hot water and a water mixing cavity communicated with the second water inlet channel are also formed in the core shaft; the mixing chamber is configured to be disposed proximate to a cold water inlet; the first water inlet channel and the second water inlet channel extend along a first direction, and in the first direction, the extension length of the first water inlet channel is not less than that of the second water inlet channel. The utility model discloses a tap not only has prevents scalding the function, and when cold environment used, can not make the user experience better user experience because of touching the low temperature that the shell was experienced to be difficult to bear.

Description

Anti-scalding faucet

Technical Field

The utility model relates to a shower faucet technical field, concretely relates to prevent scalding tap.

Background

Traditional shower faucet often is formed by the casting of copper spare, and its inside direct forming has hot water runner and cold water runner, because the coefficient of heat conductivity of copper is high, the user is often scalded because the casing of touching the tap carelessly at the shower in-process, and shower experience is not good.

Documents such as CN205001598U and CN204176028U in the prior art all disclose shower faucets capable of realizing an anti-scald function. Specifically, the water heater comprises a copper outer shell and a plastic inner core, wherein a cold water flow passage is formed between the plastic inner core and the copper outer shell, and a hot water flow passage is formed inside the plastic inner core. After water is supplied, the cold water flow channel is coated on the plastic inner core, namely outside the hot water flow channel, so that a better cooling effect can be achieved on the copper shell of the faucet, and the scald-proof function is achieved.

However, in order to simplify the flow passage and pursue a better anti-scald effect, the thermostatic valve core is arranged at one end of the hot water inlet, so that hot water is directly introduced into the thermostatic valve core, and the hot water flow passage is very short. Therefore, when the faucet is used in winter in some cold regions, the cold water temperature is very low, and the user easily feels uncomfortable due to careless touch of the cold faucet shell, and the user experience in the case is also poor.

Therefore, although the anti-scald faucet in the prior art can play the anti-scald effect, the structure of the anti-scald faucet still needs to be improved to improve the user experience.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned defect or problem that exist among the background art, provide a prevent scalding tap.

In order to achieve the above object, the utility model provides a scald-proof faucet, it includes:

the shell extends along a first direction and is provided with a first inlet and a second inlet which are respectively communicated with a cold water source and a hot water source;

the core shaft is arranged in the shell so as to form a first water inlet channel communicated with the first inlet between the outer wall of the core shaft and the inner wall of the shell; the outer wall of the water mixing chamber is provided with a first water passing port and a second water passing port, and the interior of the water mixing chamber is also provided with a second water inlet channel and a water mixing cavity communicated with the second water inlet channel; the first water inlet channel is communicated with the water mixing cavity through a first water passing hole; the second water passing hole is matched with the second inlet in a sealing way and communicated with the second water inlet channel;

wherein the water mixing cavity is configured to be arranged close to the first water passing hole; the first water inlet channel and the second water inlet channel extend along a first direction, and in the first direction, the extension length of the first water inlet channel is not less than that of the second water inlet channel.

In one embodiment: the outer wall of the mandrel is provided with a flow guide rib which is arranged corresponding to the first inlet and used for guiding cold water introduced from the first inlet to the second water passing port.

In one embodiment: the water inlet joint is matched with the first inlet and the second inlet in a sealing mode.

In one embodiment: and a sealing ring is arranged between the inner wall of the shell and the outer wall of the mandrel and corresponds to the position of the second water passing opening, so that the second water passing opening is in sealing fit with the second inlet.

In one embodiment: the first inlet and the first water passing hole are arranged on the same side, and the second inlet and the second water passing hole are arranged on the same side.

In one embodiment: the water mixing cavity extends along the first direction, a thermostatic valve core is arranged in the water mixing cavity, and an overflowing gap is formed between the outer wall of the thermostatic valve core and the inner wall of the water mixing cavity;

a sealing ring is arranged between a cold water inlet and a hot water inlet of the thermostatic valve core, and the cold water inlet and the hot water inlet are respectively communicated with the first water inlet channel and the second water inlet channel through the overflowing gap.

In one embodiment: the core shaft is also internally provided with a mixed water channel, a switching cavity, a first water outlet channel and a second water outlet channel;

the switching cavity is positioned at one end of the mandrel opposite to the water mixing cavity, and a switching valve core is arranged in the switching cavity;

one end of the mixed water channel is communicated with the outlet of the thermostatic valve core, and the other end of the mixed water channel is communicated with the water inlet of the switching valve core; the switching valve core is provided with two water outlets which are respectively communicated with the first water outlet channel and the second water outlet channel in a sealing way;

the mixing water channel, the first water outlet channel and the second water outlet channel extend along the first direction and are coated in the second water inlet channel.

In one embodiment: the water outlet device also comprises a first water outlet joint and a second water outlet joint, wherein the first water outlet joint and the second water outlet joint respectively penetrate through the shell from two opposite sides of the shell and are in sealing fit with the first water outlet channel and the second water outlet channel.

In one embodiment: the thermostatic valve core and the switching valve core are both rotary valve cores;

the faucet also comprises two operating handles which are respectively connected with the operating rods of the thermostatic valve core and the switching valve core in a rotation stopping way.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) in the anti-scald tap provided by the embodiment of the utility model, the first water inlet channel is arranged between the shell and the mandrel, the second water inlet channel is arranged inside the mandrel, and cold water directly contacts with the shell when flowing through the first water inlet channel, so that the hot water in the second water inlet channel can be prevented from directly transferring heat to the shell, and the anti-scald effect is achieved;

(2) the anti-scald faucet provided by the embodiment of the utility model arranges the first water inlet channel and the second water inlet channel to extend along the first direction, and arranges the water mixing cavity to be close to the first water passing opening, namely to be far away from the second water passing opening;

after entering the second water inlet channel from the second water outlet, hot water can reach the water mixing cavity only by penetrating through the length of the whole mandrel in the axial direction (namely the length direction of the mandrel), and the first water outlet through which cold water needs to pass is closer to the water mixing cavity, but the extension length of the first water inlet channel in the first direction is not smaller than that of the second water inlet channel, so that the first water inlet channel is filled with the cold water firstly, a return loop is formed in the first water inlet channel, and then the cold water enters the water mixing cavity through the first water outlet;

therefore, in the first direction, the cold water and the hot water in the first water inlet channel and the second water inlet channel basically have staggered and opposite flow directions, and the cold water and the hot water in the second water inlet channel transfer heat through the outer wall of the mandrel, so that the cold water in the first water inlet channel is heated to a certain temperature by the hot water in the second water inlet channel;

the cold water and the hot water can be premixed in advance, and the cold water in the first water inlet channel can be prevented from being too cold, so that the surface temperature of the copper shell can not be too low in winter or in a cold environment, a user can not feel intolerable low temperature even if the user accidentally touches the shell, and the user experience is improved on the basis of the prior art;

(3) the utility model discloses prevent scalding tap, spindle outer wall still are equipped with the water conservancy diversion rib, and it corresponds the setting with first entry to roughly prolong the length direction of dabber and extend, thereby will be by the hot water side of the mouth of a river is crossed to the cold water direction second that first entry was introduced, make cold water in the first inlet channel can wrap up the hot water in the second inlet channel more fast evenly, and the pre-mixing of the two is more even, has the better effect of preventing scalding.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a perspective view of a faucet according to embodiment 1 of the present invention;

fig. 2 is an exploded view of a faucet according to embodiment 1 of the present invention;

FIG. 3 is a cross-sectional view of the faucet of embodiment 1 of the present invention with the operating handle hidden;

FIG. 4 is another cross-sectional view of the faucet of embodiment 1 of the present invention with the operating handle hidden;

FIG. 5 is a cross-sectional view of the housing of the faucet of embodiment 1 of the present invention;

fig. 6 is a perspective view of the spindle of the faucet of embodiment 1 of the present invention;

fig. 7 is a rear view of the spindle of the faucet of embodiment 1 of the present invention;

fig. 8 is a cross-sectional view of the spindle of the faucet of embodiment 1 of the present invention;

FIG. 9 is another cross-sectional view of the spindle of the faucet of embodiment 1 of the present invention;

fig. 10 is a left side view of the spindle of the faucet of embodiment 1 of the present invention;

fig. 11 is a perspective view of the thermostatic cartridge of the faucet of embodiment 1 of the present invention;

fig. 12 is a perspective view of the spindle of the faucet of embodiment 2 of the present invention;

fig. 13 is a top view of a faucet of embodiment 2 of the present invention;

fig. 14 is a cross-sectional view of section a-a in fig. 13.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are preferred embodiments of the invention and should not be considered as excluding other embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.

In the claims, the specification and the drawings, unless otherwise expressly limited, to the extent that directional terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" and the like are used, the positional or orientational relationships illustrated in the drawings are based on the positional and orientational relationships illustrated in the drawings and are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention in any way.

Example 1

Referring to fig. 1 to 11, embodiment 1 of the present invention provides an anti-scald faucet 1, which includes: a housing 10, a spindle 20, a thermostatic cartridge 30 and a switching cartridge 40. In this embodiment, the housing 10 is made of copper, and the core shaft 20 is made of plastic.

The housing 10 extends in a first direction and is provided with a first inlet 11 and a second inlet 12 for communicating a cold water source and a hot water source, respectively. In this embodiment, the housing and the mandrel are both substantially cylindrical barrels, and the first direction is an extending direction of a geometric axis of the housing and the mandrel.

The core shaft 20 is installed in the housing 10 to form a first water inlet channel 21 communicating with the first inlet 11 between the outer wall thereof and the inner wall of the housing. The outer wall of the mandrel 20 is provided with a first water passing port 23 and a second water passing port 24 which penetrate through the mandrel, and the inner part of the mandrel is also provided with a second water inlet channel 22 and a water mixing cavity 25 communicated with the second water inlet channel.

The first water inlet channel 21 is communicated with the water mixing cavity 25 through a first water passing opening 23, and the second water passing opening 24 is in sealing fit with the second inlet 12 and communicated with the second water inlet channel 22. In this embodiment, a sealing ring is disposed between the inner wall of the housing 10 and the outer wall of the mandrel 20 at a position corresponding to the second water passing opening 23, so that the second water passing opening 23 is sealed and isolated from the first water inlet channel 21, and is in sealing fit with the second inlet 12.

Therefore, cold water of the cold water source sequentially enters the water mixing cavity through the first inlet 11, the first water inlet channel 21 and the first water inlet 23, hot water of the hot water source sequentially enters the water mixing cavity through the second inlet 12, the second water inlet channel 24 and the second water inlet channel 22, and cold water and hot water cannot flow into the water mixing cavity 25. Just because first inlet channel 21 locates between shell 10 and dabber 20, inside second inlet channel 22 located dabber 20, cold water flows through first inlet channel 21 when with shell 10 direct contact, therefore it can prevent that the hot water in the second inlet channel 22 from directly conducting heat to shell 10 to play and prevent scalding the effect.

Further, the utility model discloses a solve prior art's defect, still have following configuration to first inlet channel 21, second inlet channel 22 and muddy water chamber 25: the mixing chamber 25 is configured to be disposed close to the first water passing opening 23; the first water inlet channel 21 and the second water inlet channel 22 both extend along a first direction, and in the first direction, the extension length of the first water inlet channel 22 is not less than that of the second water inlet channel 22.

Since the first water inlet channel 21 and the second water inlet channel 22 are required to respectively introduce cold water and hot water into the water mixing cavity 25, the first water inlet channel 21 and the second water inlet channel 22 are configured to extend along the first direction, and the water mixing cavity 25 is disposed close to the first water passing opening 23, that is, away from the second water passing opening 24, so that after the hot water enters the second water inlet channel 22 from the second water passing opening 24, the hot water needs to pass through the entire mandrel 20 in the axial direction (i.e., the length direction thereof) to reach the water mixing cavity 25, and although the first water passing opening 23 through which the cold water needs to pass is closer to the water mixing cavity 25, since the extension length of the first water inlet channel 21 along the first direction is not less than that of the second water inlet channel 22, the cold water fills the first water inlet channel 21 first, forms a return loop in the first water inlet channel, and then enters the water mixing cavity 25 through the first water passing opening 23.

Therefore, in the first direction, the hot and cold water in the first and

second water inlets

21 and 22 have substantially opposite directions, and the heat transfer between the hot and cold water in the first water inlet 21 and the second water inlet 22 occurs through the outer wall of the mandrel 20, so that the cold water in the first water inlet 21 is heated to a certain temperature by the hot water in the second water inlet 22. This not only makes cold, hot water can premix in advance, can also make the cold water in the first inlet channel 21 be unlikely to too cold to under winter or cold environment, can not make the temperature on copper shell 10 surface too low, even if the user touches the shell carelessly, can not feel intolerable low temperature yet, thereby solve among the prior art user experience difference under this condition defect.

In this embodiment, in order to simplify the flow channel design in the mandrel 20 and reduce the production difficulty, the first inlet 11 is disposed on the same side as the first water gap 23, and the second inlet 12 is disposed on the same side as the second water gap 24.

In a specific structure, the thermostatic valve core 30 is a side-in bottom-out thermostatic valve core, and the cold and hot water inlets thereof are positioned on the side surface of the outer wall thereof. The water mixing cavity 25 also extends along the first direction, so that the thermostatic valve core is transversely arranged in the water mixing cavity 25, and an overflowing gap is formed between the outer wall of the thermostatic valve core and the inner wall of the water mixing cavity. A sealing ring is arranged between cold and hot water inlets of the thermostatic valve core 30, and the cold and hot water inlets are respectively communicated with the first water inlet channel 21 and the second water inlet channel 22 through the overflowing gap, so that the cold and hot water can not flow in the water mixing cavity 25 until entering the thermostatic valve core 30, and the stability of the water outlet temperature is ensured. And, through setting up this thermostatic cartridge for shower faucet 1 has the effect of constant temperature and limit for the temperature, further prevents to go out the water scald.

Further, a mixing water channel 26, a switching cavity 27, a first water outlet channel 28A and a second water outlet channel 28B are further disposed in the core shaft 20. The switching chamber 27 is located at an end of the spindle 20 opposite to the water mixing chamber 25, and the switching valve core 40 is installed therein. The switching valve core 40 is in a side-in bottom-out water-passing mode, and has two water outlets which are respectively in sealing communication with the first water outlet channel 28A and the second water outlet channel 28B. The first water outlet channel 28A and the second water outlet channel 28B are used for water outlet and lower water outlet of a shower faucet respectively.

In a specific water path, one end of the mixing water channel 26 is communicated with the outlet of the thermostatic valve element 30 through a third water passing port 251 located in the water mixing chamber 25, and the other end is communicated with the water inlet of the switching valve element 40, so that the mixed water after mixing is introduced into the water inlet of the switching valve element 40 located in the switching chamber 27 through the mixing water channel 26.

In this embodiment, the mixing channel 26, the first outlet channel 28A and the second outlet channel 28B all extend along the first direction and are covered in the second inlet channel 22. Thus, the water mixing cavity 25 and the switching cavity 27 are respectively formed at two ends in the core shaft 20, the second water inlet channel 22 is formed outside the middle section, and the mixing water channel 26, the first water outlet channel 28A and the second water outlet channel 28B which extend in parallel with the second water inlet channel 22 are formed inside the middle section, so that the flow channel design in the core shaft 20 is optimized, and the core shaft 20 is compact in structure.

In this embodiment, the thermostatic valve core 30 and the switching valve core 40 are both rotary valve cores, so the faucet 1 further includes two operating handles 50, which are respectively connected to the operating levers of the thermostatic valve core 30 and the switching valve core 40 in a rotation-stopping manner for user operation.

It should be noted that the thermostatic cartridge 30 and the switching cartridge 40 adopted in the present embodiment are both prior art, and the present invention does not further describe the internal structure and principle thereof.

In addition, the faucet 1 of the present embodiment further includes a cold water inlet joint 61, a hot water inlet joint 62, a first water outlet joint 71, and a second water outlet joint 72. The cold water inlet joint 61 and the hot water inlet joint 62 are respectively in sealing fit with the first inlet 11 and the second inlet 12, and the first water outlet joint 71 and the second water outlet joint 72 respectively penetrate through the shell from two opposite ends of the shell 10 and are in sealing fit with the first water outlet channel 28A and the second water outlet channel 28B.

Example 2

Referring to fig. 12-14, there is shown an anti-scald faucet 1 according to embodiment 2 of the present invention. Embodiment 2 differs from embodiment 1 only in that the mandrel 20 also has the following configuration.

The outer wall of the mandrel 20 is also provided with a diversion rib 29 which is arranged corresponding to the first inlet 11 on the shell and extends along the length direction of the mandrel 20 approximately, so that cold water introduced from the first inlet 11 is guided to the hot water side of the second water passing port 24, and hot water in the second water passing port 22 can be quickly and uniformly wrapped by the cold water in the first water inlet channel 21, and the premixing of the cold water and the hot water is more uniform, so that a better anti-scalding effect is achieved.

The description of the above specification and examples is intended to illustrate the scope of the invention, but should not be construed as limiting the scope of the invention. Modifications, equivalents and other improvements which may be made to the embodiments of the invention or to some of the technical features thereof by a person of ordinary skill in the art through logical analysis, reasoning or limited experimentation in light of the above teachings of the invention or the above embodiments are intended to be included within the scope of the invention.

Claims

1. An anti-scald faucet, comprising:

2. The anti-scald faucet of claim 1, wherein: the outer wall of the mandrel is provided with a flow guide rib which is arranged corresponding to the first inlet and used for guiding cold water introduced from the first inlet to the second water passing port.

3. An anti-scald faucet as defined in any one of claims 1 or 2, wherein: the water inlet joint is matched with the first inlet and the second inlet in a sealing mode.

4. An anti-scald faucet as defined in any one of claims 1 or 2, wherein: and a sealing ring is arranged between the inner wall of the shell and the outer wall of the mandrel and corresponds to the position of the second water passing opening, so that the second water passing opening is in sealing fit with the second inlet.

5. An anti-scald faucet as defined in any one of claims 1 or 2, wherein: the first inlet and the first water passing hole are arranged on the same side, and the second inlet and the second water passing hole are arranged on the same side.

6. An anti-scald faucet as defined in any one of claims 1 or 2, wherein: the water mixing cavity extends along the first direction, a thermostatic valve core is arranged in the water mixing cavity, and an overflowing gap is formed between the outer wall of the thermostatic valve core and the inner wall of the water mixing cavity;

7. The anti-scald faucet of claim 6, wherein: the core shaft is also internally provided with a mixed water channel, a switching cavity, a first water outlet channel and a second water outlet channel;

8. The anti-scald faucet of claim 7, wherein: the water outlet device also comprises a first water outlet joint and a second water outlet joint, wherein the first water outlet joint and the second water outlet joint respectively penetrate through the shell from two opposite sides of the shell and are in sealing fit with the first water outlet channel and the second water outlet channel.

9. The anti-scald faucet of claim 7, wherein: the thermostatic valve core and the switching valve core are both rotary valve cores; the faucet also comprises two operating handles which are respectively connected with the operating rods of the thermostatic valve core and the switching valve core in a rotation stopping way.